Dazhong
Dazhong Liu, Shenzhen CN
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20120149373 | REDIRECTING MOBILE SERVICES IN MULTIPLE OVERLAPPED WIRELESS NETWORKS - Techniques, apparatuses, and systems for redirecting mobile services include generating a message with a redirection indication and transmitting the message to one or more mobile stations. A redirection indication can include an identifier for a wireless network operator and access information for a network associated with the wireless network operator. | 06-14-2012 |
Dazhong Ma, Shenyang City CN
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20130054204 | AUTOMATIC THREE-PHASE UNBALANCED LOAD COMPENSATION EXPERIMENTAL DEVICE AND ITS CONTROL METHOD - Disclosed are an automatic three-phase unbalanced load compensation experimental device and its control method. The experimental device comprises an automatic compensation device, a load simulation part, and detection, display and control parts. The automatic compensation device comprises power capacitors and intelligent grouping compound switches; the detection, display and control part comprises current transformers, molded case circuit breakers, a three-phase digital display ammeter, a three-phase electric power monitoring instrument, a protocol conversion module, 485 buses, Ethernet cables and an upper computer; the load simulation part comprises phase A, B and C loads which are in star connection and are same in component and circuit connection, an analog output module and a relay output module. Power monitoring instrument and digital ammeter are connected to the grid by circuit breaker and current transformer. The automatic compensation device and load simulation part are connected to the grid in parallel. | 02-28-2013 |
20130076130 | TRANSFORMER CONTROL DEVICE AND METHOD BASED ON THREE-DIMENSIONAL ZONE DIAGRAM POLICY - Disclosed is a transformer control device and method based on a three-dimensional zone diagram policy. The method includes: setting transformers, including a transformer A and a transformer B; collecting three-phase voltage data and three-phase current data in a power system; rectifying the collected three-phase voltage data and the three-phase current data; transferring the data to the latches in a time-transfer method; transferring the data to an A/D converter of a processor to convert analog signals to digital signals; constructing a three-dimensional zone diagram in the processor; determining transformer operating conditions according to positions of points formed by voltage, reactive power factor and substation load; and adjusting the transformers. This invention adopts a simple, easy and clear three-parameter control policy including voltage, power factors and substation loads, so as to simplify analysis of transformer operating conditions, realize optimal substation operation, reduce transformer loss, and increase economic benefits. | 03-28-2013 |
Dazhong Shen, Neutraubling DE
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20120249277 | TAP CHANGER WITH A POLARITY SWITCH FOR A VARIABLE TRANSFORMER - The invention relates to a step switch provided with a pre-selector and a polarity circuit, a separate polarisation resistance being respectively provided at the beginning and the end of the stepped winding. Optionally, the two polarisation resistances can be connected continuously or via separate polarity switches. | 10-04-2012 |
Dazhong Wang, Beijing CN
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20120269314 | HIGH-TEMPERATURE GAS-COOLED REACTOR STEAM GENERATING SYSTEM AND METHOD - A high-temperature gas-cooled reactor steam generating system comprises a plurality of nuclear steam supply systems, a high-pressure cylinder ( | 10-25-2012 |
Dazhong Wu, Shanghai CN
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20120112520 | BURST-PROOF SAFETY TYRE OF VEHICLE - The present invention relates to an explosion-proof security tyre for vehicles. The tyre includes an outer tyre, a split rim, a L-shaped sealing ring, a combined support loop and a valve core. The combined support loop includes a plurality layers of support rings they are sleeved by layer on layer and fixed with the rim. The size of the tyre can increased by the combined support loop so as to furthest shorten the distance between the inner wall of the outer tyre and the outer wall of the combined support loop at a normal pressure of tyre. At the moment that the tyre is burst, the combined support loop can support the outer tyre quickly and effectively, and control the change of acting radius of the tyre in a minimum range so as to ensure the basic performance of the tyre and to prevent accidents caused by sudden control loss of running direction and avoid potential security risks. Moreover, the split rim is benefit for mounting the combined support loop by layering, and is easy to be assembled and disassembled so that the tyre can be maintained and replaced by normal tools. | 05-10-2012 |