Patent application number | Description | Published |
20090317254 | PITCH ACTUATOR FOR WIND TURBINE GENERATOR, AND WIND TURBINE GENERATOR - Provided are a pitch actuator for a wind turbine generator and a wind turbine generator that can be prevented from losing their reliability. Provided are a cylinder ( | 12-24-2009 |
20100011575 | METHOD OF REPLACING WIND TURBINE EQUIPMENT - A method of replacing wind turbine equipment, which can reduce the cost for replacing large equipment disposed in a nacelle, is provided. The method is characterized by including a winch-hoisting step for winching up to a nacelle a reciprocating winch that is used for replacing the wind turbine equipment disposed in the nacelle mounted atop a tower and a balance supporting the wind turbine equipment with an ordinarily-installed winch provided on a girder that moves in the nacelle; a wire-hoisting step for hoisting a wire that is used for the replacement of the wind turbine equipment to the nacelle from a drum disposed on the ground; a winch-replacing step for detaching the ordinarily-installed winch from the girder and attaching the winch for replacement to the girder; and a wire-arranging step for arranging the hoisted wire on the reciprocating winch and a movable pulley provided between the balance and the girder. | 01-21-2010 |
20100028152 | Wind-turbine rotor-blade hoisting apparatus, method for attaching wind-turbine rotor blade, and method for constructing wind power generator - The present invention provides a wind-turbine rotor-blade hoisting apparatus that enables attachment and removal of wind-turbine rotor blades without using a plurality of heavy machines and that enables attachment and removal of wind-turbine rotor blades on a site having a complex land shape with little flat land, a method for attaching a wind-turbine rotor blade, and a method for constructing a wind power generator. The present invention is characterized in that it includes a sheave ( | 02-04-2010 |
20100032960 | WIND TURBINE GENERATOR - A wind turbine generator that can eliminate the penetration of rainwater and prevent the occurrence of failure is provided. The wind turbine generator includes: a plurality of wind-turbine rotor blades for receiving wind power; a rotor head to which the plurality of wind-turbine rotor blades are attached, the rotor head being rotated and driven by the wind power received by the plurality of wind-turbine rotor blades; a head capsule for covering the rotor head; a blade-side disc portion that extends from each wind-turbine rotor blade radially outward of the wind-turbine rotor blade and is inclined toward the head capsule; a cylindrical portion that is disposed substantially coaxial with each wind-turbine rotor blade and extends from the head capsule toward the tip of the wind-turbine rotor blade; a capsule-side disc portion extending radially outward from each cylindrical portion; and a bent portion that extends radially outward from the outer circumferential edge of each capsule-side disc portion and is inclined toward the tip of the wind-turbine rotor blade. | 02-11-2010 |
20100032961 | WIND TURBINE GENERATOR - A wind turbine generator that allows for size and weight reduction of a nacelle bedplate and that enables easier maintainability, such as device replaceability, is provided. In a wind turbine generator that generates electricity by driving a generator connected, via a drive train, to a rotor head that has wind-turbine rotor blade attached thereto and rotates together therewith, at least a part of the drive train that transmits torque from the rotor head to the generator is disposed on a front side of the rotor head opposite a nacelle. | 02-11-2010 |
20100034658 | WIND TURBINE GENERATOR AND METHOD FOR CONSTRUCTING WIND TURBINE GENERATOR - Provided are a wind turbine generator and a method for constructing a wind turbine generator that allow for alleviation of construction costs, particularly for large wind turbine generators, and alleviation of limitations on construction due to weather. Provided are a rotor head that has a plurality of wind turbine rotor blades and that is rotated by wind power received by the plurality of wind turbine rotor blades, a front segment disposed on top of a tower and constituting a nacelle to which the rotor head is attached, a rear segment attached to the front segment and constituting the nacelle, a front frame disposed in the front segment and positioned between the rotor head and the tower so as to support a load on the rotor head, a rear frame disposed in the rear segment and attached to the front frame, a front cover covering the periphery of the front segment, and a rear cover covering the periphery of the rear segment. | 02-11-2010 |
20100043227 | METHOD FOR ATTACHING ROTOR OF WIND TURBINE GENERATOR AND METHOD FOR CONSTRUCTING WIND TURBINE GENERATOR - A method for attaching a rotor of a wind turbine generator and a method for constructing a wind turbine generator are provided, with which the rotor blades can be prevented from breaking and with which the construction costs can be reduced. The present invention includes: an assembly step (S | 02-25-2010 |
20100058673 | TUBULAR-MEMBER FLANGE COUPLING - The production process is shortened and the manufacturing costs are reduced. The present invention is a tubular-member flange coupling ( | 03-11-2010 |
20100276932 | PITCH DRIVE DEVICE OF WIND TURBINE GENERATOR AND WIND TURBINE GENERATOR - A pitch drive device of a wind turbine generator and a wind turbine generator that have simple and inexpensive structures and that are capable of preventing a decrease in the reliability of the pitch drive device are provided. There is provided a cylinder ( | 11-04-2010 |
20100308594 | BEARING STRUCTURE AND WIND TURBINE GENERATOR - A bearing structure that reduces the relative sliding speed of a sealing ring and a contact surface and suppresses relative deformation due to a temperature difference of inner and outer rings is provided. A rolling member is disposed inside a space formed between an outer ring and an inner ring, the outer ring or the inner ring rotating relatively via the rolling element, wherein a sliding section of the surface of the rolling member and the inner surface of the space is lubricated with a lubricant supplied into the space, and a sealing ring attached to a supporter supporting the rolling element seals an opening of the space at an end section in the axial direction. | 12-09-2010 |
20100316499 | ROTOR HEAD OF WIND POWER GENERATOR AND WIND POWER GENERATOR - A pitch drive device of a wind power generator capable of preventing the loss of reliability of the pitch drive device with a simple structure and a wind power generator are provided. A rotor head of a wind power generator in which a plurality of wind turbine blades are radially attached around a rotation axis is formed by joining a plurality of separately formed front rotor head and rear rotor head, and joint portions of the front rotor head and the rear rotor head are formed in a plane intersecting the rotation axis. | 12-16-2010 |
20110006537 | SPEED-VARYING DEVICE AND WIND TURBINE GENERATOR SYSTEM - A transmission unit ( | 01-13-2011 |
20110012360 | WIND TURBINE GENERATOR AND METHOD FOR CONSTRUCTING THE SAME - A wind turbine generator is provided that allows the use of a general-purpose crane for construction through a reduction in the weight of a nacelle. This wind turbine generator includes a yaw system that includes a yaw drive unit, a yaw slew ring, and a yaw brake and that slews the nacelle, mounted on top of a tower, depending on wind direction. This yaw system is disposed on the tower top side. | 01-20-2011 |
20110020136 | BLADE PITCH-ANGLE CONTROL APPARATUS AND WIND TURBINE GENERATOR - A blade pitch-angle control apparatus is provided which can reduce the number of machining processes required for manufacturing a hub and which improves the maintainability due to a reduction in weight of each of hydraulic cylinders. The blade pitch-angle control apparatus, which is used in a wind turbine generator having a plurality of blades and which individually operates the pitch angle of each of the blades, uses the two hydraulic cylinders to operate each of the blades. | 01-27-2011 |
20110031755 | WIND TURBINE GENERATOR - A wind-driven generator whose yaw system ( | 02-10-2011 |
20110047899 | FLANGE JOINT FOR STRUCTURAL MEMBER - A flange joint for structural members is provided, wherein by avoiding stress concentration at a welded portion, the cross-sectional size can be determined based on the base material strength, and a structure can be reduced in weight and size. In a flange joint for structural members, structural members are connected to each other in a state where an end face, for example, of an H-shaped steel beam is connected to a structural-member-connecting face of an end plate by welding and a non-connection face of the end plate is coupled to another structural member. The structural-member-connecting face of the end plate, to which the end face of the H-shaped steel beam is connected, is provided with recessed grooves along the shape of the welded portion of the end face. | 03-03-2011 |
20110095537 | WIND TURBINE GENERATOR - A wind turbine generator is provided in which a gear having a large diameter is not required in a yaw drive device ( | 04-28-2011 |
20110119889 | CONSTRUCTION METHOD AND CONSTRUCTION APPARATUS FOR OFFSHORE WIND TURBINE GENERATOR - Provided is a construction apparatus for safe and smooth construction of a floating offshore wind turbine generator in deep sea. The construction apparatus for constructing the offshore wind turbine generator with a crane ship includes a guide member attached to the crane ship in a work position perpendicular thereto such that a bottom end of the guide member is disposed under the sea and at least one pair of arm units that include grippers capable of holding and releasing a tower member divided into a plurality of segments in an axial direction and that slide along the guide member. | 05-26-2011 |
20110166796 | METHOD FOR INSPECTING BOLTS - A testing method for the bolt to be used under the conditions of excessive wind force by which bolts made of Cr—Mo steel can be separated into a group of bolts usable in cold areas and a group of bolts unusable in cold areas without conducting Charpy impact test involving complicated operation, specifically, a testing method for determining whether bolts made of heat-treated Cr—Mo steel are usable or unusable in cold areas, wherein the determination is conducted on the basis of both J parameter calculated by formula: J=(Si %+Mn %) (P %+Sn %) 104 (wherein P %, Si %, Mn % and Sn % are contents (mass %) of phosphorus (P), silicon (Si), manganese (Mn) and tin (Sn) respectively as disclosed in the inspection certificate of the Cr—Mo steel) and bolt diameter. | 07-07-2011 |
20110187104 | PITCH DRIVE APPARATUS OF WIND GENERATOR AND WIND GENERATOR - The invention provides a pitch drive apparatus of a wind generator and the wind generator capable of, with a simple structure, preventing reliability of the pitch drive apparatus from being deteriorated. The wind generator includes a wind turbine rotor blade having a blade root mounted so as to be turnable around an axis center O with respect to a rotor head, and a pitch drive apparatus for turning and driving the wind turbine rotor blade around the axis center O to change a pitch angle thereof. The pitch drive apparatus has an electric cylinder functioning as a linear actuator. | 08-04-2011 |
20120025525 | PITCH DRIVE APPARATUS OF WIND GENERATOR AND WIND GENERATOR - The present invention provides a pitch drive apparatus of a wind generator and the wind generator constituted not to affect a main shaft or a gear box, and capable of preventing reliability from being deteriorated. The pitch drive apparatus includes a wind turbine blade ( | 02-02-2012 |