Entries |
Document | Title | Date |
20080196481 | Deriving Information About Leaks in Pipes - A method and system for deriving fluid leak information are described. A plurality of sealing elements are introduced into the pipeline at a location upstream of the leak, and at least some of the sealing elements are drawn towards the leak to cause a sealing event which reduces fluid seepage. A pressure change caused by the sealing event is detected, and associated time data is used to derive information about the leak. In one embodiment, leak location information is derived. In an alternative embodiment, pressure transient information is used to derive leak size information. | 08-21-2008 |
20080209985 | METER REGISTER - A meter register includes a register body having a rotatable drive shaft coupled thereto. A drive gear is attached to the drive shaft and at least one follower gear is rotatably attached to the register body and coupled with the drive gear. An antenna is provided that includes a first electrically conductive sheet, a second electrically conductive sheet, and an axially extending leg electrically connected to the first electrically conductive sheet and the second electrically conductive sheet. A first electrically conductive sheet is spaced an axial distance away from the second electrically conductive sheet wherein at least a portion of the register body is sandwiched between the first electrically conductive sheet and the second electrically conductive sheet. The meter register can be attached to a meter body and, further, an auxiliary antenna can be attached to the meter register. Also disclosed is a method of operation of a utility measuring system that incorporates the above-described meter register. | 09-04-2008 |
20080216560 | Leak detecting apparatus - Apparatus and method for use in testing the fluid tightness of closed vessels or fluid systems, such as found in the pressurized cooling system of an internal combustion engine and the fluid transmission of an automobile. The apparatus is configured to detect and/or quantify fluid leakage from a fluid system that is under pressure, when in use, such as through imperfections in the housing or sealing structure of the fluid system whereby to warn the provider of such fluid system that a leakage condition exists. | 09-11-2008 |
20080229807 | Method and System for Detecting a Leakage in a Pipeline or Similar Conduit - The invention concerns a method and a system for detecting a leakage in a pipeline ( | 09-25-2008 |
20080302172 | SYSTEM AND METHOD FOR UTILITY METERING AND LEAK DETECTION - The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is indicated if usage does not drop to zero, at least for a period of time, during a given time interval (e.g., during a 24-hour period). The severity of the leak is indicated by the minimum amount of usage during the given time period. In one embodiment, the leak detection system is provided in connection with an Automatic Meter Reading (AMR) system. | 12-11-2008 |
20090013765 | GAS LEAK DETECTION APPARATUS AND METHOD - According to the present invention, mistaken detection of a gas leak can be prevented even when using an appliance which has been newly installed in a dwelling receiving a gas supply, and whereby a gas leak can be detected rapidly, efficiently and accurately. The characteristics extraction means | 01-15-2009 |
20090038377 | OIL MIGRATION SYSTEM - An apparatus and a system is provided that may be utilized to determine oil migration and oil displacement from a pre-oiled air filter. The present invention may also be utilized to determine if oil is displaced from the air filter onto a portion of the apparatus for visualization to a user. The present invention utilizes a demonstration apparatus having a system for forcing air through the oil subjected air filter thereby attempting to force displacement of the oil from the air filter. The apparatus utilizes a blowing means whereby the oil infused air filter is subject to higher than normal air flow and whereby the apparatus has a deflection portion whereby if oil is displaced from the air filter, it is deflected onto the deflection portion where it would be physically viewable to an observer present in the vicinity of the apparatus. | 02-12-2009 |
20090064764 | Anomaly judgment device - There is provided an anomaly judgment device that is capable of detecting an abnormal state of a system highly accurately and obtaining an accurate result. The anomaly judgment device comprises a plurality of anomaly judgment means for judging an anomaly of the system and, in cases where it is judged by the plurality of anomaly judgment means that there is an anomaly, judgment means judges that a system anomaly exists. Hence, even in the event of a localized abnormal state judgment by one anomaly judgment means or failure, a final judgment is not made based on that anomaly alone, and at least one other anomaly judgment is made, whereby erroneous judgments can be eliminated and a highly accurate anomaly judgment is possible. | 03-12-2009 |
20090090171 | Method for Verifying the Tightness of a Tank Bleeding System without Using a Pressure Sensor - In a method for verifying the tightness of a tank bleeding system with a tank bleeding valve, a stop valve for air-tightly closing the tank bleeding system relative to an atmosphere prevailing outside the motor vehicle, and a bistable pressure switch whose switched condition indicates whether a predefined switching pressure is exceeded or not reached in the tank bleeding system, in order to be able to determine the tightness of the tank bleeding system without using a pressure sensor, the following steps are carried out: waiting until the vehicle speed drops below a certain threshold; opening the tank bleeding valve; closing the tank bleeding valve when a negative pressure has been attained which lies below the switching pressure; measuring the duration from the time an initial pressure lies below the switching pressure until the moment the switching pressure is exceeded again; and assessing the tightness is assessed based on the measured duration. | 04-09-2009 |
20090126465 | LEAK DETECTION SYSTEM FOR A DISHWASHER AND ASSOCIATED METHOD - A leak detection system for a dishwasher is provided, such a leak detection system comprises a catch pan having a bottom portion and adapted to collect a leaking fluid therein. The leak detection system further comprises a leak detection device mounted above the bottom portion of the catch pan. The leak detection device includes a body portion with adjacent and spaced apart first and second contacts extending therefrom toward the bottom portion of the catch pan. One of the first and second contacts extends further toward the bottom portion than the other of the first and second contacts, so as to space the other of the first and second contacts from the bottom portion of the catch pan. An associated method is also provided. | 05-21-2009 |
20090158818 | Method of Discovering Leakage in a Heat Exchanger - A method of discovering leakage in a heat exchanger, wherein the method is carried into effect on an intact heat exchanger which, together with surrounding conduits, is filled with water. The heat exchanger preferably has requisite pressure indicators mounted between each section, as well as requisite shut-off valves. The method comprises applying in each section of the heat exchanger an excess pressure on one side which is enclosed there, while the other side is at normal pressure. The pressure is enclosed during a period of time and is monitored during this period of time. | 06-25-2009 |
20090235723 | SENSOR LINE FOR MONITORING FOR AND LOCATING LEAKS AND METHOD FOR ITS PRODUCTION - A sensor line for monitoring for and locating leaks in an installation, in which chlorine escapes to the area surrounding the installation if there is a leak. The sensor line contains a carrier pipe. The wall of the carrier pipe has openings which are closed by at least one layer which is permeable for chlorine and contains a halogen-containing siloxane rubber. | 09-24-2009 |
20090255326 | ANODE LEAK TEST IMPLEMENTATION - A system and method is provided for detecting an anode leak of an anode stream in a fuel cell stack. The system comprises a controller that stores at least one first predetermined control value that corresponds to a first pre-selected pressure level. The controller generates at least one first operational control value. The controller controls a pressure regulator device to adjust the pressure of the anode stream to reach the first pre-selected pressure level with the at least one first operational control value. The controller compares the at least one first operational control value to the at least one first predetermined control value. The controller determines the presence of an anode leak in the anode stream based on the comparison of the at least one first operational control value to the at least one first predetermined control value. | 10-15-2009 |
20090277248 | METHOD TO DETERMINE GAS LEAKAGE FROM UNDERGROUND PIPELINES - Method to determine the point of the gas leak from the buried pipeline located in the ditch under the soil, providing positioning at least one fiber-distributed temperature transmitter in the soil over the pipeline; the fiber-distributed temperature transmitter's readings allow to determine the leak point presence and location; the method is characterized by the fact that the fiber-distributed temperature transmitter is located above the pipeline surface; in the ground, between the pipeline and the transmitter or over the transmitter a shield is mounted which deflects the gas flow (in case of leakage) in the upper central part of the ditch adjacent to the transmitter and preventing the gas flow to the ditch peripheral areas located far away from the transmitter; the temperature is measured continuously and by the temperature drop the gas leak and its location is determined. | 11-12-2009 |
20090301173 | Device for detecting water leaks - A device for detecting water leaks, which comprises an inlet and an outlet and can be installed along a main duct; the main duct can be crossed by a flow of liquid. The detection device comprises at least one bypass flowmeter, in order to measure the flow rate along at least one bypass duct arranged in parallel to the main duct. Along the main duct there are flow control elements, for diverting the flow toward the bypass duct; the flow control elements can be deactivated automatically when a predefined value of difference in pressure between the inlet and the outlet is exceeded. | 12-10-2009 |
20090308140 | PIPELINE LEAK DETECTION SYSTEM - A pipeline leak detection system, includes, in combination, a pipeline; pressure sensors positioned at regular spaced intervals along the pipeline to monitor pressure within the pipeline; and a monitoring station receiving data from the pressure sensors. The monitoring station establishes a normal pressure profile of relative pressures recorded by the pressure sensors along the pipeline in the absence of a leak and issues an alarm should one of the pressure sensors provide data which is uncharacteristic of the normal pressure profile, indicating a leak in the vicinity of the one pressure sensor. | 12-17-2009 |
20100005860 | DEVICE FOR CONVEYING A SUBSTANCE PROVIDED WITH AN OPTICAL LEAK DETECTOR - A device for conveying a substance that comprises: a first duct for containing the substance; an optical fiber connected to the first duct and extending along the duct, the optical fiber including several detection members spaced along its length, each detection member having a separate reflection spectrum that varies with the presence of the substance to be detected; a control device including a light source capable of emitting a light in the reflection spectrum of each detection member, a light receiver capable of detecting the light amplitude in the detection spectrum of each detection member, and an analysis module capable of determining the presence of a leak of the substance based on the light amplitude provided by the light receiver. | 01-14-2010 |
20100037681 | PIPE PRESSURE TESTING METHOD AND APPARATUS - A pipeline pressure testing assembly has a fitting defining a flow path and having a port on a wall of the fitting into which a pressure testing device is removably inserted along a central axis of the port for pressure testing. The port is circular, larger than the interior diameter of the pipeline and located at or above the tube forming the flow path through the fitting. The fitting has a recess encircling at least part of the flow path and opening to the port to receive the testing and sealing devices. The recess is formed by two opposing walls inclined relative to the central axis of the recess. The recess walls at the top of the flow path by the port are spaced apart a distance as large as the pipe diameter for cleanout and inspection. A tubular valve stem screws into the testing device and has a rotary valve blocking flow through the tubular valve stem. Flow through the fitting is blocked with the rotary valve closed and the tubular valve stem in a first position. Flow through the testing device is allowed with the rotary valve closed and the tubular valve stem in an open position. With the rotary valve open, flow through the tubular valve stem is permitted when the tubular valve stem is in either the first or second position to provide multiple drain and fill options. | 02-18-2010 |
20100043535 | LEAK TESTER FOR A CARRIER FOR PRINTHEAD INTEGRATED CIRCUITRY - Provided is a leak tester for a carrier for printhead integrated circuits. The carrier has at least one fluid inlet in fluid communication with a plurality of fluid outlets via discrete fluid paths. The tester includes a support assembly that includes at least one receptacle shaped and configured to receive at least one respective carrier, and a pressurized fluid supply arranged on the support assembly and configured to supply pressurized fluid to the fluid inlets, the pressurized fluid supply incorporating a sealing mechanism configured to engage the fluid inlets in a sealing manner. The tester also includes a pressure measurement arrangement operatively arranged with respect to the pressurized fluid supply to measure pressure applied at the fluid inlets, and a controller operatively connected to the pressure measurement arrangement and pressurized fluid supply, the controller being configured to control the fluid supply to charge the carrier with pressurized fluid until a predetermined pressure is reached, and to monitor the pressure for a predetermined period of time. | 02-25-2010 |
20100043536 | CRADLE ASSEMBLY FOR A PRESSURE DECAY LEAK TESTER - A cradle assembly for a pressure decay leak tester is provided. The assembly operatively receives a printhead integrated circuit carrier having a plurality of printing fluid paths defined therein, respective fluid inlets in fluid communication with respective fluid paths and a locating formation to facilitate correct location of the carrier on the tester. The assembly includes at least one complementary locating formation for engaging the locating formation of the carrier, and at least one fluid outlet for charging the carrier with fluid via a respective fluid inlet of the carrier. Also included is a clamping device for clamping the carrier to the fluid outlet, so that the integrity of the fluid paths is observable via pressure decay testing, and a control system operatively connected to the clamping device for controlling operation of the clamping device. | 02-25-2010 |
20100064776 | METHOD AND DEVICE FOR DETECTING AND/OR QUANTIFYING WATER LEAKS - The invention relates to a method for detecting and/or quantifying water leaks in a water pipe, and to a device for realizing said method. The method of the invention comprises measuring the water flow rate in the pipe in at least two different locations, i.e., one downstream and one upstream relative to the suspected leak, the water flow rate being measured by injecting a tracing agent that modifies the water conductivity instantaneously at an upstream location and a downstream location relative to the suspected leak location, continuously measuring the water conductivity downstream from said locations and, from the conductivity values, calculating the water flow rates upstream and downstream relative to the suspected leak location in the pipe. The method of the invention can be used for quantifying a leak flow rate that can even be a very small one. | 03-18-2010 |
20100089127 | Passive Leak Detection Devices and Systems for Detecting Gas Leaks - A passive leak detection device may include a pressure switch, a check valve and a balance valve. The pressure switch may include an electric input lead, an electric output lead, a balance chamber and an inlet chamber. A pressure differential between the balance chamber and the inlet chamber may be operable to couple the electric input lead to the electric output lead. The inlet chamber may be fluidly coupled to a fluid port. The balance chamber may be fluidly coupled to the fluid port with a check valve disposed there between. The balance chamber may be fluidly coupled to a balance valve. When the balance valve is closed and fluid is flowing out of the fluid port, the pressure differential from the inlet chamber to the balance chamber is operable to couple the electric output lead to the electric input lead thereby indicating of a leak. | 04-15-2010 |
20100089128 | APPARATUS FOR LEAKAGE TESTING AND/OR PRESSURE TESTING OF A PORTION OF A PIPE AND ALSO A METHOD FOR USE OF SAME - The present invention relates to an apparatus ( | 04-15-2010 |
20100095744 | LEAK DETECTOR - A leak detector for use with a piping system, where the leak detector includes a housing configured to be attached to a conduit and a valve configured and arranged for axial movement with respect to the housing. Additionally, there is a magnet attached to the valve for movement therewith. Embodiments of the invention also preferably include a magnetically-actuated switch positioned within the leak detector along an axial flow path of a fluid such that axial movement of the magnet triggers the switch, which indicates fluid flow through the leak detector. In certain embodiments, there is also a leak passageway that permits a relatively small amount of fluid to pass to an outlet side of the valve even when a diaphragm is in seating contact with the valve if fluid pressure on the outlet side of the valve is slightly lower than fluid pressure on an inlet side of the valve. | 04-22-2010 |
20100126250 | METHOD AND APPARATUS FOR DETECTING A LEAK IN A DOUBLE PIPE - In a method for detecting a leak in a double pipe, a medium located in an intermediate chamber between the interior and exterior pipe is moved toward a first end of the pipe, whereupon the medium flows in from the second end. On the first end the medium is examined for any leakage of a characteristic material, upon the detection of which a leakage signal is generated and a location of the leakage is calculated based on the transport time of the characteristic material from the leakage to the first end and on the mass flow of the medium. A corresponding device contains a conveyor unit for moving the medium through the intermediate chamber. A material sensor is disposed at the first end for examining the medium for the characteristic material. A control and analysis unit is provided for generating a leakage signal and calculating the location of the leakage. | 05-27-2010 |
20100162797 | METHODS AND SYSTEMS FOR VALVE LEAK SIMULATION - A method for simulating a compressor valve leak is described. The method includes inducing a flow of gas past a compressor valve that is coupled to a bypass block, wherein the bypass block defines a first passageway and a second passageway therein, and wherein the bypass block is also coupled to a bypass valve that is in flow communication with the second passageway. The method also includes measuring a first temperature and a second temperature. The first temperature is the temperature of the gas flowing through the first passageway of the bypass block and the second temperature is the temperature of gas flowing within the second passageway. The method also includes adjusting the bypass valve to divert a portion of the gas flowing through the second passageway to create temperature conditions substantially similar to conditions that are created due to a compressor valve leak. | 07-01-2010 |
20100175460 | DEVICE, SYSTEM, AND METHOD FOR DETECTING AND LOCATING MALFUNCTIONS IN A HYDRAULIC STRUCTURE, AND A HYDRAULIC STRUCTURE WITH SAID DEVICE - The invention relates to a device ( | 07-15-2010 |
20100175461 | METHOD AND SYSTEM FOR MONITORING GAS LEAKS BY AMPLIFICATION OF FLOW - A method to amplify the pressure effects of very small flows, or very small leaks, in contained fluid systems, and the effects of small leaks in fluid systems that have small flows such as would occur in a combustible gas system with lighted pilot lights or a contained water system with a drip watering system, while not affecting the normal operation of such fluid systems, and without interfering with the function of such small flows. | 07-15-2010 |
20100206052 | CONTROL METHOD AND DEVICE OF FILLED WATER VOLUME IN FLUID SPACE - There are provided a control method and a device of a filled water volume in a fluid space through which the fluid space can be filled with water while preventing a pipe in the fluid space from making contact with the filling water by controlling the filled water by controlling the filled water volume. | 08-19-2010 |
20100269570 | DUAL STRIPPER RUBBER CARTRIDGE WITH LEAK DETECTION - A method to detect leaks in a rotating control device includes positioning a leak detection device in communication with a chamber located between an upper sealing element and a lower sealing element of the rotating control device, and signaling with the leak detection device when a pressure of the chamber exceeds a selected critical pressure. | 10-28-2010 |
20100281953 | LINE LEAK DETECTOR AND METHOD OF USING SAME - An apparatus for detecting a leak in a conduit line includes a housing in fluid communication with the line, a valve including a valve seat and a valve element movable relative to the seat between opened and closed positions, a bypass line around the valve, a flow detector coupled to the bypass line for detecting fluid flow therethrough, and a first mechanism configured to urge the valve element toward the closed position. The apparatus may further include a second mechanism separate from the first mechanism for maintaining the valve element in the closed position until a threshold pressure drop is reached. The first mechanism may operate on the principle of buoyancy and the second mechanism may operate on the principle of magnetism. | 11-11-2010 |
20100281954 | TEST APPARATUS AND METHOD FOR SAFETY VALVE - An apparatus and method for testing the performance of a safety valve. The apparatus includes an accumulator including at least one electric heater for heating a predetermined amount of water in the accumulator, and storing steam produced by the electric heater, a test vessel storing the steam supplied from the accumulator, and providing steam at a test pressure to a safety valve, the steam being supplied after controlling flow rate and pressure, a condensing tank storing demineralized water to be supplied to the accumulator, and condensing and collecting the steam discharged from the safety valve, and a water-supply pump supplying the water stored in the condensing tank to the accumulator. | 11-11-2010 |
20100288018 | FUEL SYSTEM FOR A COMBUSTION ENGINE HAVING LOCAL LEAKAGE DETECTION - The application relates to a connector ( | 11-18-2010 |
20100288019 | METHOD AND APPARATUS FOR DETECTING A LEAK IN A FUEL DELIVERY SYSTEM - A leak detection system is provided for detecting a leak in a fuel line. A controller determines the presence of a leak in the fuel line based on an analysis of data obtained from individual leak tests performed on the fuel line, the individual leak tests may span one or more fuel delivery events. | 11-18-2010 |
20110005303 | FLUID CONVEYING TUBE AND FLUID LEAKAGE DETECTING SYSTEM - Provided are a fluid conveying tube and a fluid leakage detecting system which can convey a cryogenic fluid such as LNG and which can quickly and reliably detect leakage of the fluid within the tube and the position of the leakage. An optical fiber | 01-13-2011 |
20110072888 | METHOD FOR LEAK DETECTION IN DOSING SYSTEM - A method for detecting a leak in a dosing manifold system having a manifold body, first valve assembly, and a device capable of preventing fluid flow. The method including the steps of transporting a fluid into a control fluid circuit, trapping the fluid in the circuit with the first valve assembly and the device capable of preventing fluid flow, blocking the fluid outside the control fluid circuit, relieving pressure outside of the circuit via the first valve assembly, measuring pressure inside the circuit, and comparing the pressures with selected baseline values. | 03-31-2011 |
20110083492 | Leakage Detection Device - A leakage detection device includes a housing having a front hole at the front side for guiding in air and an exhaust hole at the rear side for exhaust of air, a sensor mounted in the housing in air communication with the front hole for detecting the presence of a coolant in the intake flow of air, and a fan assembly mounted in the housing for drawing outside air to flow through the front hole, the sensor and the exhaust hole, and a cable connectable to a digital coolant pressure gauge for transmitting power supply from the digital coolant pressure gauge to the fan assembly and the sensor and for transmitting an output signal from the sensor to the digital coolant pressure gauge for indication. | 04-14-2011 |
20110100096 | Method and System for Fluid Valve Leak Detection - A method detection of leakage through at least one first valve includes admitting an amount of fluid into a first control volume in operable communication with the at least one first valve, thereby pressurizing the first control volume. The first control volume is isolated and a rate of change of pressure in a second control volume in operable communication with the at least one first valve is measured. A system for detecting leakage across at least one first valve includes a first control volume receptive of an amount of fluid and a second control volume in flow communication with the first control volume. At least one first valve is located between the first control volume and the second control volume, and a rate of change in pressure in the second control volume indicates a rate of leakage through the at least one first valve. | 05-05-2011 |
20110132074 | Apparatus and Method for Testing Lengths of Pipe - An apparatus for pressure testing a pipe includes a frame supporting a mandrel, the mandrel being adapted for positioning within the pipe, and two sealing devices connected to the mandrel and adapted to seal opposite ends of the pipe to create an annular space between the mandrel, the pipe, and the sealing devices. The integrity of the pipe is tested by pressurizing the annular space and monitoring such pressure. | 06-09-2011 |
20110247398 | AIR VENT COVER FOR USE IN TESTING AIR LEAKAGE OF AN AIR DUCT SYSTEM - The present invention discloses an air vent cover for use in testing air leakage of an air duct system. The air vent cover includes a cover portion shaped to define a hollow cavity for enclosing an air vent. The air vent has a grill adjacent to a surface surrounding the air vent, and the grill has one or more louvers. The air vent cover includes a flexible connector extendable from the cover portion through the hollow cavity to the air vent. The flexible connector is removeably attachable to at least one of the louvers on the grill of the air vent. The flexible connector adjusts to secure an edge of the cover portion against a region of the surface surrounding the air vent, thereby creating a seal for inhibiting air flow through the air vent. | 10-13-2011 |
20110308300 | SEAL LEAKAGE AND SEAL OIL CONTAMINATION DETECTION IN GENERATOR - In an embodiment, a system includes: a casing for surrounding at least a portion of a rotor, and enclosing a volume of a cooling gas thereabout, the casing including a plurality of static seals; an end housing at each end of the casing, each end housing including a seal system through which the rotor extends, wherein a portion of cooling gas escapes from the casing to at least one seal area; and a source of cooling gas fluidly coupled to the casing by a cooling gas regulator. The system may further include: a scavenging system coupled to each end housing for removing a gas mixture therefrom including a portion of escaping cooling gas; a sensor for determining a purity of the cooling gas in the casing; and a static seal leak detector that generates an alarm indicative of a leak in at least one of the plurality of static seals. | 12-22-2011 |
20120067109 | METHOD AND APPARATUS FOR CONTINUOUSLY MONITORING INTERSTITIAL REGIONS IN GASOLINE STORAGE FACILITIES AND PIPELINES - An underground storage system includes a primary containment unit and a secondary containment unit. The underground storage system further includes a leak detection system which is fluidly connected to the secondary containment system, and which is adapted to detect fluid leaks in the primary containment system and the secondary containment system. | 03-22-2012 |
20120103070 | Leakage Detector For Compressors - A compressor leakage detector includes a water tank, an elevator platform, a control panel, and a pressure testing unit. The elevator platform is disposed in the water tank to rise and drop vertically. The operating panel of the control panel has a human-machine interface, indicators, and pressure gauges. The pressure testing unit in the control panel uses an intake pipe to connect to several branch pipes that in turn connect to the compressors in the water tank. Each of the branch pipes connects in series to at least one intake EM valve and at least one exhaust EM valve. A pressure sensor is interposed between the intake EM valve and the corresponding compressor. | 05-03-2012 |
20120118046 | EVAPORATION LEAK CHECK SYSTEM - A pump characteristics expression of a pump is developed based on a closed-state pressure detected when the pump is driven while a space between a pump passage and a first passage is closed, an open-time pressure detected immediately after the space is opened while the pump is operated, and a flow rate characteristics expression of the pump passage. A reference pressure is determined by an intersection point between the pump characteristics expression of the pump and a flow rate characteristics expression of an orifice having a predetermined passage area. A leak check portion determines whether a leak of fuel evaporation generated from a fuel tank is within an allowable range by comparing the reference pressure and a pressure detected when the pump is operated for a predetermined period while the space is opened. | 05-17-2012 |
20120118047 | IEC 61158-2 ELECTRICAL CIRCUIT WITH WATER DETECTION MEANS COMPRISING A PHYSICAL LAYER ATTRIBUTE MODIFIER - An electrical circuit confirming to the IEC 61158-2 standard comprising a power supply, a device as a load thereof, and monitoring means adapted to monitor one or more physical layer attributes of the electrical circuit, in which the device comprises an enclosure, device function electronics disposed therein and two terminals connecting said device function electronics to said electrical circuit, in which water detection means is disposed inside said enclosure, and comprises water detection probes and a physical layer attribute modifier mounted across said electrical circuit in parallel with said device function electronics, and in which when said water detection probes detect water said physical layer attribute modifier makes a modification to a physical layer attribute of the electrical circuit, which modification is detectable by said monitoring means. | 05-17-2012 |
20120144898 | FLOW SENTINEL - A flow sentinel for improved remote monitoring and control of the flow in a water line serving a residential or commercial structure comprises: (1) a watertight case having a first side and a second side oppositely placed; (2) a water inlet positioned in the first side of the watertight case; (3) a water outlet positioned in the second side of the watertight case; (4) a water flow meter in operable contact with the water inlet and the water outlet; (5) at least one means for display and/or remote transmission of the flow rate of the water; (6) an alarm; (7) means for shutting off the flow in a water line; and (8) means for powering the water flow meter. | 06-14-2012 |
20120160013 | LINE LEAK DETECTOR AND METHOD OF USING SAME - An apparatus for detecting a leak in a conduit line includes a housing in fluid communication with the line, a valve including a valve seat and a valve element movable relative to the seat between opened and closed positions, a bypass line around the valve, a flow detector coupled to the bypass line for detecting fluid flow therethrough, and a mechanism configured to urge the valve element toward the closed position and to maintain the valve element in the closed position until a threshold pressure drop is reached. The mechanism may operate on the principle of magnetism. | 06-28-2012 |
20120167669 | LEAK DETECTION SYSTEM - A hose leakage detection system includes a ring configured to be disposed within a hose. The ring has a lateral slot formed in an outer surface, defining a first slot wall and a second slot wall. A sensor is disposed on one of the first slot wall and the second slot wall and a power source is electrically connected to the leakage detection system. | 07-05-2012 |
20120167670 | SYSTEM AND METHOD FOR AIR CONTAINMENT ZONE AIR LEAKAGE DETECTION - A system for measuring hot or cold aisle containment air leakage in a data center includes a plurality of equipment enclosures arranged in a first row and a second row, a plurality of panels cooperatively arranged with the plurality of equipment enclosures to form an air containment region, and a conduit mounted within the air containment region and sealed at each end, the conduit having an orifice and a plurality of openings distributed at substantially uniform intervals along a length of the conduit. | 07-05-2012 |
20120186333 | EVAPORATION SYSTEM LEAK DIAGNOSTIC APPARATUS - An evaporation system leak diagnostic apparatus that purges fuel vapor from a fuel tank into an intake system of an internal combustion engine via a canister, includes: a first closed system leak diagnostic unit that executes a leak diagnostic on a first closed system based on a tank internal pressure detected by a tank internal pressure detecting device while the first closed system is formed with a first closed system forming device; and a second closed system leak diagnostic unit that introduces pressure in the first closed system into a second closed system by forming a second closed system with a second closed system forming device, and executes a leak diagnostic on the second closed system based on the tank internal pressure detected by the tank internal pressure detecting device, after the leak diagnostic by the first closed system leak diagnostic unit. | 07-26-2012 |
20120204624 | DUAL SUBMARINE LEAK DETECTION SYSTEM - The dual submarine leak detection system provides for controllable in-pipe leak detection. The dual submarine leak detection system includes first and second submarines joined to one another by a tether. Each of the submarines includes a housing and at least one leak detector mounted thereon. A communication transceiver is mounted in the housing for remotely communicating the leak condition and a location of the leak condition, as well as receiving control and communication signals. Each submarine further includes at least one selectively retractable leg mounted on the housing and selectively extending therefrom, and a motor mounted within the housing for driving a propeller to propel the submarine through a fluid-filled pipe. A control system further allows for controllable or programmable steering of the submarine through the fluid-filled pipe and any pipe joints associated therewith. | 08-16-2012 |
20120216600 | SELF-MONITORING FLOW MEASURING ARRANGEMENT AND METHOD FOR ITS OPERATION - self-monitoring flow measuring arrangement includes a pipeline system flowed through by a medium, a control device installed in the pipeline system on the inlet-side, which varies a flow rate of the total medium flowing into the pipeline system according to a predetermined time-dependent periodic change profile; at least one flow measuring device installed in the pipeline system, which is located at a measuring location, which is located behind the control device in the flow direction, and through which the entire medium flowing through the pipeline system flows, and which measures the flow rate (Q | 08-30-2012 |
20120240663 | METHOD FOR LEAK-TESTING HAND-HELD PISTON STROKE PIPETTES AND ASSOCIATED LEAK-TESTING APPARATUS - A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus ( | 09-27-2012 |
20120255342 | DEVICE FOR CONTROLLING LEAKS AND METHOD FOR OPERATING THE SAME - A leak detection system includes a water delivery device having a flow chamber, closing valve member and at least one contact seat for receiving a portion of the closing valve member. A first contact is located on the closing valve member and a second contact is located on the contact seat, where the first and second contacts are coupled to a leak detection circuitry. A water flow detection element is located within the flow chamber, where the leak detection circuitry is configured to be in an inactive mode when the first and second contacts are apart and where the leak detection circuit is set to active when the first and second contacts are in contact with one another, when the closing valve member and contact seat are in a closed arrangement. | 10-11-2012 |
20120255343 | LEAK DETECTION SYSTEM - The system includes structure for supporting at least one tube within a pipe. The tube has one end disposed close to, or in contact with, a wall of the pipe. A sensor is disposed within the at least one tube to detect a pressure gradient or fluid movement within the tube. Such pressure gradient or fluid movement indicates a leak in the pipe adjacent to the tube location. In a preferred embodiment, the structure is a ring sized to fit within the pipe and the ring supports a plurality of tubes. In another aspect, the tube includes a restriction to prevent flow and pressure is measured on each side of the restriction. | 10-11-2012 |
20120255344 | PIPE PRESSURE TESTING METHOD AND APPARATUS - A sealing device is provided for use with a fitting. The fitting has circular port and a flow path with a longitudinal axis. A circular port encircles a portion of the flow path opposite the port with the sealing device inserted into the port. The sealing device has a circular top with two opposing surfaces depending therefrom but inclined so the surfaces are closer at the top. A continuous sidewall joins the periphery of the two surfaces. The opposing surfaces are inclined and spaced apart further at the top than at an end opposite the top. A cylindrical hole through the opposing surfaces encircles the flow path during use. | 10-11-2012 |
20120272722 | IN-PIPE LEAK DETECTION BASED ON PRESSURE GRADIENT - Leak detection system. The system includes a structure sized to fit within a pipe for supporting at least one sensing element near an inside wall of the pipe, whereby a pressure gradient at a leak in the pipe will cause the sensing element to respond. Structure is provided for detecting movement or deformation of the sensing element, the movement or deformation indicating the presence of a leak. In a preferred embodiment, the structure includes two spaced-apart rings for supporting the at least one sensing element. The sensing element is a diaphragm in a preferred embodiment. In this embodiment, the sensing element is supported for movement with respect to the ring structure which includes sensing circuitry for detecting the movement to indicate a leak. Other embodiments employ different sensing elements that respond to pressure gradients near leaks. | 11-01-2012 |
20120324985 | FLUID LEAK DETECTION SYSTEM - A fluid leak detection system is provided, and includes a fluid conduit, a fluid-cooled device having an inlet and an outlet, an inlet flow meter, an outlet flow meter, and a controller. The inlet flow meter is fluidly connected to the fluid conduit. The inlet flow meter monitors the inlet of the fluid-cooled device for an inlet temperature and an inlet flow rate. The inlet flow meter has an inlet flow meter drift versus process fluid temperature curve. The outlet flow meter is fluidly connected to the fluid conduit. The outlet flow meter monitors the outlet of the fluid-cooled device for an outlet temperature and an outlet flow rate. The outlet flow meter has an outlet flow meter drift versus process fluid temperature curve. The controller is in communication with the inlet flow meter and the outlet flow meter. | 12-27-2012 |
20130000388 | MULTILAYER STRUCTURE HAVING A MICROFLUIDIC CHANNEL AND A SYSTEM FOR DETECTING LEAKAGE FROM THE MICROFLUIDIC CHANNEL, AND METHOD OF DETECTING LEAKAGE IN A MICROFLUIDIC DEVICE - A multilayer structure includes: a microfluidic circuit, delimited at least in part by a first sealing structure; a fluid-tight chamber delimited in part by a second sealing structure and in part by the first sealing structure, which is arranged in the fluid-tight chamber and is configured to provide a signal indicative of a leakage between the microfluidic circuit and the fluid-tight chamber. | 01-03-2013 |
20130008233 | WATER LEAKAGE CHECKING APPARATUS - A water leakage checking apparatus includes: a plurality of attachment portions for attaching an endoscope; a water leakage sensing portion that communicates with the plurality of attachment portions and simultaneously carries out a plurality of items of a water leakage check menu; and an endoscope information reading portion that reads endoscope information from the endoscope. Also, the water leakage checking apparatus includes: a control portion that determines an item of the water leakage check menu based on the read endoscope information, assigns the determined item of the water leakage check menu to one of the plurality of attachment portions, and outputs attachment portion identifying information for identifying the assigned one of the attachment portions; and a notifying portion that notifies the attachment portion identifying information outputted from the control portion. | 01-10-2013 |
20130031960 | SEAL GAS MONITORING AND CONTROL SYSTEM - A monitoring and control system for a seal gas supply system for a non-contacting gas seal. The supply includes several gas conditioning elements or units. The monitoring and control system includes an evanescent wave sensor to sense the presence of liquid in the seal gas. Multiple sensors to sense the temperature and pressure of the treated seal gas are disposed at the outlet of the conditioning elements. A programmable logic device is provided with information regarding the phase of the gas at various pressures and temperatures and compares the sensed data to the baseline data. Recognition of liquid concentrate results in an output signal. | 02-07-2013 |
20130036796 | ENCLOSURE FOR LEAK DETECTOR - A leak detection structure for attachment to a fire hydrant includes an enclosure, the enclosure defining a cavity internal to the enclosure and a leak detection subassembly located in the cavity, the leak detection subassembly including at least one leak detection sensor and at least one circuit. | 02-14-2013 |
20130067994 | SYSTEMS AND METHODS FOR DIAGNOSING AN ENGINE - Presently disclosed are methods and systems for diagnosing a coolant leak of an engine. A method may include diagnosing a coolant leak of an engine based on identified fill signatures of a measured engine coolant pressure. A vehicle system is also disclosed, including an engine, a coolant system operatively connected to the engine, a coolant pressure sensor configured to measure engine coolant pressure during operation of the engine, and a controller, including instructions configured to create a coolant pressure profile corresponding to a given engine speed, and diagnose a condition of the engine based on the coolant pressure profile. | 03-21-2013 |
20130081449 | MONITORING STATE OF FLUID TRANSPORT PIPE - A method, apparatus, and system for monitoring the state of a fluid transport pipe. In one embodiment, there is provided a method of monitoring the state of a fluid transport pipe, the method including: causing a monitor to move along with a fluid inside the fluid transport pipe, the monitor including an elastic gas container and being configured to adjust the volume of the elastic gas container based on ambient pressure of the elastic gas container; and measuring and recording, by the monitor, one or more types of environmental data inside the fluid transport pipe for determining the state of the fluid transport pipe. In other embodiments, there are further provided an apparatus and system for monitoring a state of a fluid transport pipe. | 04-04-2013 |
20130098143 | FUEL VAPOR LEAK DETECTING DEVICE AND FUEL VAPOR LEAK DETECTING METHOD USING THE SAME - A fuel vapor leak detecting device includes a pump, a housing having a pump passage connected to the pump, a switching valve, a pressure detector, and a control device detecting a shutoff pressure that corresponds to an interior pressure of the pump passage detected by the pressure detector when the pump is actuated while the switching valve is closed. The control device controls the switching valve to be opened at least once and to be closed at least once when the shutoff pressure is out of a specified range. The control device detects a fuel vapor leak when the shutoff pressure is in the specified range. | 04-25-2013 |
20130145825 | METHOD FOR LEAK-TESTING AND DEVICE FOR CARRYING OUT THE METHOD - A method for leak-testing a fuel supply system has been provided, wherein the fuel supply system comprises a fuel tank, a fuel injection valve, fuel lines between the fuel tank and the fuel valve, and a control valve controlled by a diaphragm, and wherein the diaphragm bounds a control chamber on one side, the method comprising: acting upon the portion of the fuel supply system upstream of the control valve with a predetermined pressure level, acting upon the side of the diaphragm facing away from the control chamber with a counterforce, wherein the counterforce is equal or greater to the predetermined pressure level. A device for leak-testing a fuel system according to the above method, wherein the device comprises a test pressure unit with at least one test pressure line, wherein said test pressure line is connectable to the fuel supply system. | 06-13-2013 |
20130152672 | HIGH PRESSURE AND TEMPERATURE VALVE - The present disclosure is directed to systems and methods which provide a seal-less high temperature and pressure valve for use in many applications. | 06-20-2013 |
20130174649 | FLUID LEAK DETECTION SYSTEM - A fluid leak detection system is provided, and includes a fluid conduit, a fluid-cooled device having an inlet and an outlet, an inlet flow meter, an outlet flow meter, and a controller. The inlet flow meter and inlet flow meters are fluidly connected to the fluid conduit. The inlet flow meter monitors the inlet of the fluid-cooled device for an inlet temperature and an inlet flow rate. The inlet and outlet flow meters each have flow meter drift versus process fluid temperature curves as well as drift versus ambient temperature curves, wherein the curves for the inlet flow meter differ from the outlet flow meter. The outlet flow meter monitors the outlet of the fluid-cooled device for an outlet temperature and an outlet flow rate. The controller is in communication with the inlet flow meter and the outlet flow meter. | 07-11-2013 |
20130174650 | METHOD FOR DETECTING LEAKS, SYSTEM AND MEDICAL TREATING DEVICE - The present invention relates to a method for detecting leakages in a system for conducting a medical fluid upstream a shut-off device of the system as well as systems related thereto. More specifically, the method is used with systems having a section conducting the medical fluid, the section being arranged upstream the shut-off device, which is configured to interrupt or reduce an escaping or outflow of the fluid out of the section into an area downstream the shut-off device. The system for use with the present method further has at least one conveying device for conveying the fluid through the section. The present invention further relates to a digital storage medium, a computer program product and a computer program for performing the method for detecting leakages. | 07-11-2013 |
20130180317 | ON BOARD SEAT LEAKAGE DETECTION SYSTEM - Equipment and methodology are provided for performing seat leakage detection on a valve assembly including at least two valves to be tested, wherein, while both of the valve assembly valves remain closed, at least a first shut off valve of a plurality of shut off valves is closed to enable flow of fluid through manifold passages of a plurality of manifold passages to test the first valve of the valve assembly valves and, subsequently, at least another shut off valve of the plurality of shut off valves is closed to enable flow of fluid through manifold passage of the plurality of manifold passages to test the second valve of the valve assembly valves. | 07-18-2013 |
20130199273 | MONITORING FLUID FLOW IN A CONDUIT - According to the present invention, there is provided a method of monitoring a fluid in a fluid carrying conduit comprising the steps of: monitoring a fluid characteristic at a first point and second point along the conduit substantially continuously, determining first and second quantities, being related to a differential with respect to time of the value of the fluid characteristic at the first and second points respectively, combining the first and second quantities to produce a two dimensional intensity function of time and a position variable and analysing the magnitude of the intensity function to derive information relating to the fluid. The intensity function may represent a substantially continuous probability function, wherein its absolute value is related to the probability of a leak or theft having occurred in the conduit. Furthermore, a method of determining the presence and location of leaks in, or thefts from, the conduit by determining whether or not the magnitude of the intensity function satisfies pre-determined criteria is disclosed. A method of determining the speed of pressure waves propagating through a fluid flowing in a fluid carrying conduit by analysing the two dimensional intensity function is also disclosed. An apparatus suitable for performing all of the above mentioned methods is also claimed. | 08-08-2013 |
20130239662 | SYSTEM AND METHOD FOR AUTOMATED INTEGRITY TESTING - A testing system and method for performing integrity testing in a gas piping system include using a motorized pump to pressurize the piping system. A pressure sensor is used for measuring the pressure in the piping system, and an input device receives inputs from an operator related to a test to be performed. An output device is provided for communicating information to the operator. A control system includes at least one controller and is configured to: control the pump to pressurize the piping system to a predetermined pressure, receive inputs from the pressure sensor, and output data related to the pressure of the piping system. | 09-19-2013 |
20130247651 | VALVE-CELL VACUUM DEPOSITION APPARATUS INCLUDING A LEAK DETECTION DEVICE AND METHOD FOR DETECTING A LEAK IN A VACUUM DEPOSITION APPARATUS - The leak detection device is adapted to test the tightness of an inner tank ( | 09-26-2013 |
20130255360 | PLATING METHOD AND PLATING APPARATUS - A plating method includes holding a substrate with a substrate holder while bringing a sealing member into pressure contact with a peripheral portion of the substrate to form an enclosed internal space in the substrate holder; performing a first-stage leakage test of the substrate holder by producing a vacuum in the internal space and checking whether pressure in the internal space reaches a predetermined vacuum pressure within a certain period of time; and if the substrate holder has passed the first-stage leakage test, performing a second-stage leakage test of the substrate holder by closing off the internal space after producing the vacuum therein and checking whether a change in the pressure in the internal space reaches a predetermined value within a certain period of time. | 10-03-2013 |
20130276517 | GAS LEAK DETECTOR - A gas-leak detector includes a suction pump that sucks sample gas and reference gas, two gas detection sensors, and a cell block having a cell therein. The cell receives the gasses and has two suction-gas introduction channels and a single gas discharge channel opening thereinto. The gas-leak detector detects a gas leak on the basis of outputs from the sensors. The introduction channels and the discharge channel open into the cell at a first one of opposing surfaces of the cell, the opening of the discharge channel being arranged between the openings of the two introduction channels. The sensors are on the same plane as a second one of the opposing surfaces and are arranged between the opening of the discharge channel and the openings of the introduction channels. The suction pump is arranged on the cell block and communicates with the opening of the discharge channel. | 10-24-2013 |
20130283891 | METHODS AND APPARATUS FOR LEAK DETECTION IN BLOOD PROCESSING SYSTEMS - A flow reversing device for performing blood treatment can include a flow reversing actuator. The flow reversing actuator can receive and engage a disposable tubing set with multiple branches that form forward and reverse blood flow paths respectively when blood the flow reversing actuator is selectively changed between forward and reverse configurations. The shape of the tubing can be such that during forward operation, dead regions of non-flowing blood are defined. The flow reversing actuator can have a controller configured to operate generally in forward mode. At first times, the controller can cause the flow reversing actuator to clear the dead regions. At second times, the controller can cause the flow reversing actuator to test for leaks by reversing the flow of blood for a period of time sufficient to cause air to be drawn into the tubing set and conveyed to an air sensor. | 10-31-2013 |
20130298643 | EVAPORATIVE EMISSIONS LEAK TESTER AND LEAK TEST METHOD - A tester and method for testing for a leak in an evaporative-emissions system of a motor vehicle comprise a/an power supply, computer, display communicating with the computer, analog-to-digital board communicating with the power supply and computer, pressure sensor communicating with the hoard, housing into which the power supply, board, and sensor are integrated, stationary enclosure, and test connection including a hose to the enclosure. A fuel-vapor pressure-rise rate is recorded with an engine of a motor vehicle turned “off.” A value is recorded that directly correlates with an out-gassing affect created by a volume, blend, and temperature of fuel. A “purge” cycle occurs at idling of the vehicle within a short period of time. The engine applies a vacuum to a fuel-delivery system of the vehicle. Vacuum decay is recorded. A leak rate is determined by off-setting the recorded fuel-vapor pressure-rise rate with the recorded vacuum decay. | 11-14-2013 |
20130333447 | LEAKAGE DETECTION - A leak detector includes a fabric having a conductor. The fabric has an electric property between the conductor and a reference. The electric property has a first value in response to the fabric being in a non-wetted state with regard to a working fluid and the electrical property has a second value different than the first value in response to the fabric being in a wetted state with regard to the working fluid. | 12-19-2013 |
20140000348 | LOCATION OF A LEAK IN A PIPE | 01-02-2014 |
20140013827 | SYSTEM AND METHOD FOR AIR CONTAINMENT ZONE AIR LEAKAGE DETECTION - A system for measuring hot or cold aisle containment air leakage in a data center includes a plurality of equipment enclosures arranged in a first row and a second row, a plurality of panels cooperatively arranged with the plurality of equipment enclosures to form an air containment region, and a conduit mounted within the air containment region and sealed at each end, the conduit having an orifice and a plurality of openings distributed at substantially uniform intervals along a length of the conduit. | 01-16-2014 |
20140020450 | PIPELINE LEAK DETECTOR - The pipeline leak detector travels through a pipeline passively due to the flow of liquid through the pipeline. The device includes leading and trailing rings shaped to produce hydrodynamic resistance in order for the device to be carried through the pipeline. Wheels are provided about each ring. At least one wheel has an odometer to measure distance traveled through the pipe. The rings are joined by a plurality of axially oriented connecting rods. A plurality of sensing elements extend between the rings. Each sensing element has a thin laminate of a piezoelectric film sandwiched between two electrically conductive layers, and an electrically insulating coating on the outside of each conductive layer. One of the rings, e.g., the trailing ring, includes microelectronic circuitry for data acquisition and storage, e.g., estimates of the magnitude of any leakage encountered, the location of the leakage based upon the odometer travel, etc. | 01-23-2014 |
20140033802 | FUEL SYSTEM DIAGNOSTICS - An emissions control system is provided that comprises a fuel tank, a hydrocarbon filter element, and a three-way valve coupled between the hydrocarbon filter element and the atmosphere. The three-way valve is comprised of three ports, a purge port, a reference port, and a sealed port, and enables identification of degradation of the emissions control system. The arrangement of the ports on the valve enables a simplified testing method that reduces background errors caused by transitioning between various operating positions. | 02-06-2014 |
20140053636 | EVALUATION OF LEAK TESTING INSTRUMENTS - A method of determining the accuracy and repeatability of leak testing instrumentation comprises the following steps: providing a two chamber vessel having an access port and a flow controlling reference orifice associated with each chamber and a third reference orifice communicating between the two chambers, providing a leak testing device and connecting such leak testing device first to one of such ports, pressurizing the associated chamber and, with the associated orifice open, observing and recording the pressure measured by the leak testing device under test as a function of time. The second test repeats this activity with the other chamber and the other orifice. A third test is undertaken with the third orifice open. One of the chambers is smaller and incorporates a smaller orifice and the other chamber is larger and incorporates a larger orifice thus achieving leak testing under different conditions. | 02-27-2014 |
20140102179 | TURBINE LEAK DETECTION SYSTEM - Various embodiments include a leak detection system for a turbine compartment. In some embodiments, the leak detection system includes: a tracer fluid system fluidly connected with the turbine compartment, the tracer fluid system configured to provide an optically detectable fluid to a fluid supply of the turbine compartment; an optical detection system operably connected to the turbine compartment, the optical detection system configured to detect the presence of the optically detectable fluid in at least one location of the turbine compartment; and a control system operably connected to the tracer fluid system and the optical detection system, the control system configured to obtain data about the presence of the optically detectable fluid in the at least one location, and provide an indicator indicating a potential leak location based upon the data about the presence of the optically detectable fluid in the at least one location. | 04-17-2014 |
20140109654 | Method and Apparatus for Assessing the Consumption of a Medium in a Supply System - Method and a device for assessing the consumption of a medium in a supply distribution system using at least one consumption meter, in which the consumption flow values ({dot over (V)}) of the medium consumed are determined based on the consumption values measured over time (V | 04-24-2014 |
20140150531 | SELECTIVELY SEALABLE PIPE STUB - A pipe stub is provided that includes an elongated cylindrical portion that is selectively sealed on one end. For example, the cylindrical portion may be selectively sealed with a removable diaphragm. In operation, after the pipe stub is interconnected to a plumbing system and a leak test is completed, the plumber severs show otherwise circumvents the diaphragm to open the pipe stub, which can be used to receive additional plumbing components. | 06-05-2014 |
20140150532 | VALVE LEAK DETECTING METHOD AND COMBUSTION EQUIPMENT - A valve leak detecting method includes a pressure setting step before closing valves individually to set a pressure in a pipe, a first threshold value evaluating step for closing the valves after the pressure has been set to no less than the threshold value, and evaluating whether the pressure, after a specific time interval has elapsed, is at least threshold value, a second valve normalcy evaluating step for evaluating that one of the valves is operating properly or faultily if the pressure is at least or less than the threshold value, respectively, a second threshold value evaluating step for closing the valves and evaluating whether the pressure is less than the threshold value after a specific time interval has elapsed, and a first valve normalcy evaluating step for evaluating whether the valve is operating properly or faultily depending on the pressure being less or no less than the threshold value. | 06-05-2014 |
20140174158 | METHOD FOR CHECKING THE LEAKPROOFNESS OF SAFETY VALVES - Method for checking the leakproffness of safety valves. Method for testing the leadkproofness of two controllable valves (V | 06-26-2014 |
20140182360 | EVAPORATED FUEL PROCESSING DEVICE AND METHOD FOR DIAGNOSING EVAPORATED FUEL PROCESSING DEVICE - A evaporated fuel processing device includes a seal valve that seals off the fuel tank from the atmosphere, a canister, a changeover valve that allows or inhibits communication of the canister with the atmosphere, the canister internal pressure sensor, a controller that sends an open/close command to the seal valve and the changeover valve, a diagnosis unit that performs leak diagnosis of an evaporated fuel sealing system, and a negative pressure pump that generates pressure in the evaporated fuel sealing system. The diagnosis unit performs leak diagnosis of the entirety of the evaporated fuel sealing system before performing leak diagnosis of a canister side section. The diagnosis unit performs function diagnosis of the seal valve with the seal valve closed and the changeover valve at a shut-off position based on whether the detection value of the tank internal pressure sensor varies beyond a predetermined range of the generated pressure. | 07-03-2014 |
20140283582 | Method And Apparatus For Determining The Thermal Status Of Fuel In A Line Leak Detection System - A method of determining the thermal status of fuel in a fuel distribution system ( | 09-25-2014 |
20140290342 | PRESSURE DETECTING DEVICE AND METHOD - A method and apparatus detects gas or liquid leaks in a building. The device may include a pressure gauge attached to liquid or gas piping in the building. The pressure gauge may detect fluctuations of pressure and may send signals of fluctuations to an indicator. Once the indicator receives the fluctuation, the indicator may be activated. | 10-02-2014 |
20140290343 | METHOD AND SYSTEM FOR DETECTING A LEAK IN A PIPELINE - System and method for detecting a leak in a pipeline with a sensing cable including an optical fiber sensor array aligned with a heating element. At least one heat pulse is propagated through the heating element along at least a portion of the sensing cable to affect an exchange of thermal energy between the heating element and fluid exposed to the sensing cable. A temperature profile of the sensing cable corresponding to the heat pulse at each of a plurality of sensor locations on the optical fiber sensor array is measured over time. A leak in a pipeline is detected by determining one or more properties of the fluid exposed to the sensing cable at each of the plurality of sensor locations based on the temperature profile corresponding thereto. | 10-02-2014 |
20140345366 | PIPELINE LEAK DETECTOR - The pipeline leak detector is a mobile device having one or more pressure sensor arrays for travel within a fluid pipeline for leak detection in the pipe wall. The sensor array(s) is positioned close to the internal surface of the pipe wall, and rotates circumferentially about the surface of the pipe wall as the device travels through the pipe. The sensor array(s) thus describes a helical path along the pipe wall, covering the entire internal surface of the pipe wall with a minimal number of sensors. The device is supported by three wheels bearing against the internal surface of the pipe wall. A drive wheel provides motive power for the device. A driven wheel rotates as it travels along the pipe wall and communicates rotationally with the sensor array(s) to drive its rotation. The third wheel is an idler to stabilize the axial orientation of the device within the pipe. | 11-27-2014 |
20140345367 | PIPELINE LEAK DETECTOR - The pipeline leak detector is a mobile device having a pressure sensor array for travel within a fluid pipeline for leak detection in the pipe wall. The sensor array is positioned close to the internal surface of the pipe wall and rotates circumferentially about the surface of the pipe wall as the device travels through the pipe, thus describing a helical path along the pipe wall to cover the entire internal surface of the pipe wall with a minimal number of sensors. The sensors comprise tubes with conical mouths, and flexible members and strain gauges within the tubes. Pressure changes due to leaks cause the flexible members to move, with the strain gauges sending signals to a central processor to indicate a leak. The device is supported by a drive wheel, a driven wheel, and an idler wheel bearing against the internal surface of the pipe and evenly circumferentially spaced. | 11-27-2014 |
20150013436 | Diagnostic System For Bulk Well Material Handling Plants - Diagnostic system for bulk well material handling plants that includes multiple fluid flow pathways to transport well materials. The bulk well material handling system includes multiple connections, each connected to a fluid flow pathway. The system also includes a control system connected to the multiple connections and adapted to automatically operate one or more connections of the multiple connections to a fluid flow pathway to analyze a pneumatic integrity of the fluid flow pathway in the bulk material handling system. | 01-15-2015 |
20150013437 | DEVICE AND METHOD FOR DIAGNOSING EVAPORATED FUEL PROCESSING DEVICE - An evaporated fuel processing apparatus includes a valve between a canister and a fuel tank, and maintains the fuel tank in hermetic state by closing the valve while a vehicle is stationary, and adsorbs evaporated fuel by the canister by opening the valve during fuel filling, wherein the evaporated fuel occurs in the fuel tank. A diagnostic apparatus includes: a pump connected to a canister-side region with respect to the valve, and configured to pressurize a system of the canister and the fuel tank; and a pressure sensor for sensing an internal pressure of the system. The diagnostic apparatus starts pressurization by the pump with the valve closed; brings the system into a pressurized state by opening the valve with a delay after the start of pressurization; and performs a leakage diagnosis based on a change in the internal pressure of the system from the pressurized state. | 01-15-2015 |
20150052980 | GAS TURBINE FUEL NOZZLE LEAK DETECTION PRESSURE TEST TOOL AND METHOD FOR LEAK DETECTION - Internally shielded fuel passage orifices in nozzle rocket swirler airfoils are sealed with the pressure test tool. Pinch clamps on the test tool are introduced into the fuel nozzle rocket swirler. The clamps are tightened over the airfoil orifices to plug or otherwise seal them and their fuel passages within the nozzle assembly. The nozzle assembly fuel passages are subsequently pressurized. Pressure is monitored to determine whether the nozzle is properly sealed (i.e., no pressure decay) or whether it has a leak-causing structural defect. Pressure drop in the tested component during the test cycle is indicative of a leak, in the nozzle's fuel passages, caused for example by a structural defect in the component. The test system may also be utilized in conjunction with individual rocket swirlers that are not incorporated within a complete fuel nozzle assembly. | 02-26-2015 |
20150068286 | LEAK DETECTION SYSTEM - A hose leakage detection system includes a ring configured to be disposed within a hose. The ring has a lateral slot formed in an outer surface, defining a first slot wall and a second slot wall. A sensor is disposed on one of the first slot wall and the second slot wall and a power source is electrically connected to the leakage detection system. | 03-12-2015 |
20150068287 | Gas Monitoring Device, System and Methods - A gas monitoring system for continuously detecting leakage of at least one gas and being operable in an extreme climate condition, the system involving a processor; at least one emergency shutdown valve responsive to a set of instructions from the processor; and a user interface in communication with the processor. The system further involves a weather-proof enclosure for housing system components. The weather-proof enclosure is adapted to operate at a temperature range of ambient temperature to a below-freezing temperature, wherein the at least one emergency shutdown valve comprises at least one latch valve. | 03-12-2015 |
20150082868 | INFRASTRUCTURE MONITORING DEVICES, SYSTEMS, AND METHODS - A leak detection assembly includes a leak detection sensor mountable on a surface of a component of a water infrastructure system; and a communications device mountable on the component, the leak detection sensor connected to the communications device, the communications device including an antenna, wherein the communications device is a component of an infrastructure monitoring system. A leak detection system includes a component of a water infrastructure system; a leak detection sensor mounted on a surface of the component; and a communications device positioned in proximity to the component and connected to the leak detection sensor, the communications device including an antenna, wherein the communications device is a component of an infrastructure monitoring system | 03-26-2015 |
20150090006 | COMBINATION PRESSURE- AND VACUUM-BASED EVAP LEAK DETECTION METHOD - A method and system for conducting leak detection in an evaporative emission control system. The method performs a pressure-based leak test at selected intervals. The pressure-based test includes pressurizing the system, using a pump. Then, the system monitors pressure for a selected period. If system pressure falls below a threshold value during the selected period, the system identifies an initial leak. Upon identifying the initial leak, the system substitutes a vacuum-based leak test at each selected interval. The vacuum-based test includes evacuating the system, using the pump. The system then monitors system pressure for a selected period. If system pressure rises above a threshold value during the selected period, then the system identifies a subsequent leak. Upon receiving notification that the initial leak has been repaired, the system returns to pressure-based leak testing. Where a single pump is used, that pump is configured both for system pressurization and evacuation. | 04-02-2015 |
20150143877 | LEAK DETECTION METHOD OF REDUCING AGENT PUMPING SYSTEM - A leak detection method of a reducing agent pumping system including a reducing agent tank, an injector, a line formed through the reducing agent tank and the injector, and a pumping module disposed in the line may include pumping a reducing agent to the injector with a pump of the pumping module and detecting a pressure thererof, operating the pump at a predetermined load or less and stopping an operation of the injector, when it is determined that a detected pressure is between a first set value and a second set value, operating a heater for heating the reducing agent in the pumping module for a predetermined time, and determining that leak occurred in the line between the pumping module and the injector, when it is determined a temperature of the reducing agent in the pumping module is lower than a predetermined value. | 05-28-2015 |
20150362398 | Sheet Metal Processing Machines Having a Chip Suctioning Device and Methods for Detecting a Malfunction in the Chip Suctioning Device - Sheet metal processing machines having a chip suctioning device and a control device are provided. The chip suctioning device has a chip space connected to a die orifice of a punching die for collecting chips, wherein the chip space is provided with a chip flap and a extraction line, and the extraction line comprises at least one sieve, a vacuum generator, e.g., an extraction fan, connected to the extraction line for generating a vacuum in the chip suction device, and a vacuum sensor, connected to the extraction line between the downstream last sieve and the vacuum generator, being configured to supply signals to the control device. | 12-17-2015 |
20160003704 | DETECTING WHEEL RIM CRACKS - A crack in a wheel rim is detected by placing a composition including a liquid carrier, such as water, and a fluorescent dye, into an interior space formed between a tire and a rim. After an interval, the exterior surface of the wheel rim is inspected using a UV light source, which causes visible light to be emitted from the fluorescent dye. The light emissions indicate the presence of dye which has seeped from the interior space, through a crack in the material of the rim, to an exterior of the rim. A conditioner or sealant can be combined with the fluorescent dye to provide other benefits. | 01-07-2016 |
20160025588 | SYSTEMS AND METHODS FOR EVAPORATIVE EMISSIONS TESTING - A method for a vehicle, comprising: following a vehicle-off event, waking a powertrain control module based on a comparison of an ambient temperature and a bulk fuel temperature; and then initiating an evaporative emissions system leak test. In this way, the evaporative emission leak test may be initiated without waking the powertrain control module arbitrarily. By waking the powertrain control module and initiating the test based on ambient and bulk fuel temperatures the execution rate of the leak test can be increased. | 01-28-2016 |
20160025589 | EVAPORATIVE EMISSIONS TESTING BASED ON HISTORICAL AND FORECAST WEATHER DATA - A method for a vehicle, comprising: initiating an engine-off natural vacuum test based on an ambient temperature change potential over a testing duration. The ambient temperature change potential may be based on historic weather data and further based on forecast weather data. In this way, the engine-off natural vacuum test may be executed only when conditions favor an in-tank temperature change significant enough to cause a threshold change in fuel tank pressure, thus reducing the number of aborted tests and increasing the test's overall performance metrics. | 01-28-2016 |
20160032872 | ENGINE-OFF NATURAL VACUUM TESTING FOR VARIABLE DISPLACEMENT ENGINE VEHICLES - A method, comprising: adjusting an evaporative emissions leak test parameter based on a ratio of cylinder run time of a deactivatable cylinder of an engine, to vehicle run time; and indicating degradation based on the adjusted parameter. The adjusted parameter may thus more accurately reflect the state of a vehicle configured to run with one or more cylinders deactivated. In this way, the evaporative emissions leak test may realize improved robustness and performance metrics, thus reducing warranty costs associated with poor test metrics. | 02-04-2016 |
20160040630 | ROUTE AND TRAFFIC INFORMATION-BASED EVAP SYSTEM LEAK TEST INITIATION - Systems and methods for performing evaporative emissions leak detection in a vehicle are provided. In one embodiment, a method comprises initiating a leak test via an electronic controller in a vehicle responsive to selected route conditions. In this way, a leak test may run without premature termination, therefore saving resources. | 02-11-2016 |
20160041062 | LEAK INDICATOR - The present invention concerns a liquid leakage detection apparatus. The apparatus includes a sample cavity, a housing with an opening and a housing contact face, an indicator body with an indicator body contact face, and a expansion element cavity between said housing contact face and said indicator body contact face. A liquid sensitive, expandable element is located in the expansion element cavity and a liquid path extends between the liquid collecting portion and the expansion element cavity. | 02-11-2016 |
20160061155 | FUEL VAPOR LEAKAGE DETECTION DEVICE AND METHOD FOR CONTROLLING THE SAME - A filter element is accommodated in a filter case. A housing is affixed to the filter case. A partition plate is located between the filter case and the housing. A switching valve is equipped in the housing. The switching valve includes a solenoid actuator, a valve, and a valve seat member. A vibration transmission member is located on one side in a driving direction of the valve relative to the valve seat member. The vibration transmission member is in contact with the switching valve at one end and is in contact with the partition plate at the other end. The vibration transmission member transmits oscillation, which is caused when the valve is seated on the valve seat, to the filter element through the partition plate. | 03-03-2016 |
20160061685 | GAS INTERNAL COMBUSTION ENGINE GAS LEAK CHECKING DEVICE AND METHOD FOR SAME - An object of the present invention is to provide a gas leakage checking device and a method for the same, for checking fuel-gas leakage of safety shutoff valves simply and securely by measuring a pressure in a fuel supply pipe. The gas-leakage checking device | 03-03-2016 |
20160069771 | SYSTEM AND METHODS FOR FUEL SYSTEM LEAK DETECTION - A method for a fuel system comprises indicating a leak in the fuel system based on a pressure change rate distribution during a first condition including a sealed fuel system and a pressure change rate within a threshold of zero. By indicating a leak based on a pressure change rate distribution rather than through simple thresholding, an engine-off natural vacuum test may be performed in a greater range of conditions. In this way, the execution rate of the test may be increased while maintaining or improving the leak detection rate and reducing the misclassification rate. | 03-10-2016 |
20160084728 | TURBINE LEAK DETECTION SYSTEM - Various embodiments include a leak detection system for a turbine compartment. In some embodiments, the leak detection system includes: a tracer fluid system fluidly connected with the turbine compartment, the tracer fluid system configured to provide an optically detectable fluid to a fluid supply of the turbine compartment; an optical detection system operably connected to the turbine compartment, the optical detection system configured to detect the presence of the optically detectable fluid in at least one location of the turbine compartment; and a control system operably connected to the tracer fluid system and the optical detection system, the control system configured to obtain data about the presence of the optically detectable fluid in the at least one location, and provide an indicator indicating a potential leak location based upon the data about the presence of the optically detectable fluid in the at least one location. | 03-24-2016 |
20160096135 | DOOR ASSEMBLY WITH SCANNING MECHANISM, AND CONTAINMENT SYSTEM WITH SAME - An access door that includes a scanning mechanism for a containment system, a containment system having the same, and a method for leak testing a filter installed in the containment system are described herein. In one embodiment, a containment system is disclosed that includes a housing having a downstream test section access port selectively sealed by a downstream test section access door. A displacement assembly is coupled to the downstream test section access door and is operable to move a plurality of probes disposed in the housing relative to the test section access door. | 04-07-2016 |
20160097694 | DETERMINING CYLINDER HEALTH IN A RECIPROCATING PISTON ENGINE - Computer-implemented methods, computer program products, and computer systems are described for determining cylinder health characteristic in a reciprocating piston engine of the type including a piston-cylinder assembly and a crankshaft. The piston-cylinder assembly includes a cylinder and a piston configured to translate within the cylinder as the crankshaft rotates. In one embodiment, the computer-implemented method includes rotating the crankshaft in a first direction, while generating a first data set comprising a first plurality of piston position measurements and corresponding pressure indicator measurements. The crankshaft is further rotated in a second opposing direction, while a second data set is generated comprising a second plurality of piston position measurements and corresponding pressure indicator measurements. A symmetric aspect between the first and second data sets is then identified and utilized to determining a cylinder health characteristic for the piston-cylinder assembly. | 04-07-2016 |
20160097697 | Leak Detecting Apparatus and Leak Detecting Method - Provided is a leak detecting apparatus for an ink flow channel in a recording apparatus configured to supply ink from an ink supply unit via the ink flow channel to an ink discharge unit, and cause the ink to be discharged from the ink discharge unit for recording, the leak detecting apparatus including: a pressurized gas delivery unit that is connectable to the ink supply unit and delivers pressurized gas; and a pressure detecting unit provided in the pressurized gas delivery unit. The pressure variation in the ink flow channel filled with pressurized gas in association with delivery of the pressurized gas from the pressurized gas delivery unit to the ink flow channel via the ink supply unit in a pressurized manner is capable of being detected by the pressure detecting unit. | 04-07-2016 |
20160138996 | SYSTEM AND METHOD FOR DETECTING LEAKAGE IN A GAS PIPELINE - Disclosed is a leakage detection system ( | 05-19-2016 |
20160153862 | Apparatus and Method of Sensing Liquid Leakage for Lithography Apparatus | 06-02-2016 |
20160160635 | MEASUREMENT DEVICE - A system and a method for investigating and quantifying leakage rate of a fluid in an annulus are provided. An objective of the present invention is to provide an improved system and method for investigating and quantifying leakage rate of a fluid in an annulus. The present invention attains the above-described objective by the use of a throttle valve for setting a constant cross section opening while operating in choked flow and registering mass flow and change in pressure. | 06-09-2016 |
20160161358 | VALIDATION TECHNIQUES FOR FLUID DELIVERY SYSTEMS - A fluid delivery system may include a container that houses a medical fluid, a fluid pressurizing unit, and a fluid transfer set that transfers the medical fluid from the container to the fluid pressurizing unit. To validate the integrity and sterility of the fluid delivery system, the system may undergo testing protocols to evaluate the susceptibility of the system to pathogenic ingress, chemical degradation, and/or fluid cross-contamination between patient fluid delivery procedures. The testing protocols may help ensure that delivery system components used during multiple different fluid delivery procedures perform as well as if the components were replaced after each fluid delivery procedure. | 06-09-2016 |
20160168976 | SYSTEM FOR DETECTING LEAKAGE IN A PUMP USED IN HYDRAULIC FRACTURING | 06-16-2016 |
20160169767 | LEAK DETECTION SYSTEM | 06-16-2016 |
20160186695 | SYSTEMS AND METHODS FOR ENGINE-OFF NATURAL VACUUM LEAK TESTING - A method is provided, comprising terminating a pressure rise portion of an engine-off natural vacuum test based on an initial rate of change of a fuel system pressure upon sealing a fuel system; and initiating a vacuum portion of the engine-off natural vacuum test responsive to suspending the pressure rise portion. The initial rate of change may indicate a likelihood of the pressure rise portion reaching a pressure rise threshold. In this way, the vacuum portion of the test may be initiated earlier, increasing the likelihood of a conclusive result being obtained during a test time limit. | 06-30-2016 |
20160187221 | METHOD FOR DETECTING A BURST HOSE IN A HYDRAULIC SYSTEM - A system and method for detecting a leak in a hose of a hydraulic system having a control valve assembly with first and second work ports in fluid communication with an actuator is disclosed. In one aspect, the method includes estimating a first hydraulic fluid flow rate for fluid flowing from the control valve assembly first work port to the actuator. Another step may be estimating a second hydraulic fluid flow rate for fluid flowing from the actuator to the control valve assembly second work port. In one step, a proportional flow rate difference is calculated between the first and second hydraulic fluid flow rates. Subsequently, a flow error value can be calculated by subtracting the flow rate difference from a predetermined margin value. Where the flow error value integrated over time exceeds a total flow error threshold value, a hydraulic fluid leak signal can be generated. | 06-30-2016 |
20160377503 | PIPE ASSEMBLY - Disclosed herein is a pipe assembly containing a pipe, an insulating jacket coupled to the pipe via an attachment base; and a tracer wire within the insulating jacket. The width of the attachment base is greater than width of the insulating jacket. Also disclosed herein are methods of locating a pipe concealed below a ground surface, and detecting the presence and the position of a leak in a pipe concealed below a ground surface. | 12-29-2016 |
20170234759 | Compliant Leak Detection System | 08-17-2017 |
20180024022 | METHOD FOR CHECKING A CONNECTION STATE BETWEEN A BLOOD TREATMENT APPARATUS AND A BLOOD TUBING SET, AND APPARATUSES | 01-25-2018 |
20180024023 | LIQUID SENSOR | 01-25-2018 |
20220136922 | RADIO FREQUENCY WIRELESS SENSING DEVICE - The present application provides an apparatus comprising a radio frequency identification (RFID) sensor comprising: an antenna configured to receive an interrogation signal from a reader and to transmit a response signal to the reader; at least one integrated circuit (IC) connected to the antenna; and at least one sensing element. The apparatus further comprises a channel for directing transmission of signals between the antenna and the reader, wherein the RFID sensor is attached or directly adjacent to a first end of the channel. The sensing element is responsive to a change induced by its environment to switch from a conductive state to a non-conductive state, or from a non-conductive state to a conductive state. The present application further provides a method for monitoring the integrity or the change in environment of a buried structure using the RFID sensor-containing apparatus. | 05-05-2022 |