Patent application number | Description | Published |
20110133483 | WIND POWER GENERATOR - Provided is a wind power generator equipped with a circulating passage including a downward passage through which air in a nacelle flows downward from the nacelle through a tower and an upward passage through which the air that has flowed downward flows upward through the tower into the nacelle; and a heat exchanger part configured to exchange heat between the air and outside air at an intermediate portion of the circulating passage, wherein the upward passage is thermally insulated. | 06-09-2011 |
20110163545 | WIND TURBINE FOR WIND POWER GENERATION - A wind turbine for wind power generation accommodated a heat-generating device therein is always properly cooled by accurately detecting clogging of a filter. A wind turbine accommodates a heat-generating device and includes a column disposed in an upright position on a foundation, a nacelle disposed on a top end of the column, and a rotor head supported by the nacelle so as to be rotatable about a substantially horizontal axis, and the wind turbine includes an intake which is provided in an outer surface of the wind turbine and through which outside air is taken into the wind turbine to cool the heat-generating device; an exhaust which is provided in the outer surface of the wind turbine and through which air inside the wind turbine is discharged outside the wind turbine; an impurity-removing mechanism disposed in a flow path of air from the intake to the exhaust to remove impurities contained in the outside air; and a control unit for determining the condition of the impurity-removing mechanism by comparing, as a parameter serving as a criterion for determining the condition of the impurity-removing mechanism, latest data obtained while a wind speed outside the wind turbine is substantially stable with reference value data input in advance and serving as a reference. | 07-07-2011 |
20110272949 | WIND TURBINE GENERATOR - Provided is a wind turbine generator in which the intake air temperature of an air-cooled heat exchanger disposed in a nacelle is decreased to allow efficient heat exchange. A wind turbine generator that generates electric power in such a manner that a rotor head that rotates when receiving wind power drives a generator installed inside a nacelle, the nacelle being installed at the upper end of a tower that is vertically erected on a foundation, and the wind turbine generator including a closed-circuit lubricating-oil circulation system in which lubricating oil circulates through devices installed inside the nacelle, wherein an air-cooled heat exchanger installed in the lubricating-oil circulation system to cool the lubricating oil by heat exchange with air is provided in a region separate from nacelle air. | 11-10-2011 |
20110298218 | WIND GENERATOR - The present invention provides a wind generator which effectively utilizes an opening of a door opening and a shell plate, and in which an outside air-circulation flow path for introducing outside air into a cooling heat exchanger in a tower is formed. In the wind generator, a cooling medium that cools a heating element disposed in the tower circulates through a cooling heat exchanger, and heat is absorbed by exchanging heat with outside air, an outside air-circulation flow path of a closed space having an outside-air inflow opening and an outside-air discharge opening that are in communication with a door opening of a shell plate is formed in an interior space in the tower, and the cooling heat exchanger is disposed in the outside air-circulation flow path. | 12-08-2011 |
20120025541 | WIND TURBINE GENERATING APPARATUS - A wind turbine generating apparatus includes a rotor head that rotates upon receiving outside wind on a wind turbine blade, a generator that generates electricity, and a nacelle interior air passage through which outside air flows isolatedly from an interior space of the nacelle. | 02-02-2012 |
20120032448 | WIND TURBINE GENERATOR - The present invention provides a wind turbine generator, in which a rotor head that rotates by receiving external wind with turbine blades generates power by driving a generator installed inside a nacelle and in which the nacelle is installed at a top end of a tower, wherein an introducing vent that takes the external wind into an internal space in the wind turbine generator is provided at a portion of an outer circumference surface of the tower or the nacelle that receives positive pressure due to the external wind; and an exhaust vent that externally exhausts cooling air in the internal space is provided at a portion of the outer circumference surface of the tower or the nacelle that receives the negative pressure due to the external wind. | 02-09-2012 |
20120074711 | WIND TURBINE GENERATING APPARATUS - In a wind turbine generating apparatus, a heat generating device is provided inside the rotor head and has a hermetically-sealed structure from outside. A rotor head cooling air passage is formed through the periphery of the heat generating device to the inside of a wind turbine blade. A cooling air introduction portion through which cooling air flows and an air outlet from which the cooling air is discharged are provided in the rotor head cooling air passage to thereby form the air outlet in the wind turbine blade. | 03-29-2012 |
20120124984 | POWER GENERATING APPARATUS OF RENEWABLE ENERGY TYPE - A power generating apparatus includes a rotating shaft, a hydraulic pump driven by the rotating shaft, a hydraulic motor driven by operating oil supplied from the hydraulic pump; and a generator coupled to the hydraulic motor. The apparatus further includes an oil line connected to the hydraulic pump and the hydraulic motor for circulating the operating oil between the hydraulic pump and the hydraulic motor, an oil cooler connected to the oil line for cooling the operating oil by heat exchange with a cooling medium, a cooling-medium line supplying the cooling medium to the oil cooler; a bypass line diverging from at least one of the oil line and the cooling-medium line and merging into at least one of the oil line and the cooling-medium line to bypass the oil cooler; and a flow regulating valve in at least one of the oil line and the cooling-medium line. | 05-24-2012 |
20120134818 | WIND TURBINE GENERATOR - A wind turbine generator includes: a rotor hub configured to be provided inside a rotor head and contain apparatuses; a hatch configured to be provided in a front of the rotor hub; and a heat exchanger configured to be provided in an opening of the hatch. The heat exchanger includes: a partition portion configured to be put on the opening, and heat exchanging members configured to be provided so as to penetrate the partition portion, a side of one end being located inside the rotor hub and a side of the other end being located outside the rotor hub. | 05-31-2012 |
20120134846 | WIND TURBINE GENERATOR - Provided is a wind turbine generator that prevents an increase of weight of a wind turbine blade and a reduction in ventilation efficiency and that realizes good ventilation cooling of a rotor head with a simple structure. The wind turbine generator includes: a hollow interior space formed in a wind turbine blade; an exhaust path provided through a wind-turbine-blade forming member at a tip end of the wind turbine blade or in a vicinity of the tip end, so as to allow the interior space to communicate with an outside of the wind turbine blade; and an opening that allows the interior space to communicate with a rotor head main body. Ventilation cooling inside the rotor head main body is performed by using a pressure difference between the tip end of the wind turbine blade and the rotor head main body, produced by a rotation of the wind turbine blade. | 05-31-2012 |
20120148407 | WIND TURBINE GENERATOR - A wind turbine generator includes a tower, at least one blade, a hub supporting the blade, a nacelle supported by the tower and having a duct part with an intake port and an exhaust port, and a heat exchanger provided in the duct part and cooling a cooling medium for a heat-producing component inside the tower or nacelle. The wall of the nacelle has a double wall structure constituted of an inner wall and an outer wall in an area where the duct part is provided. The inner wall forms a bottom surface of the duct part and has a curved portion which curves inward toward a center line of the nacelle with increasing distance from the hub. The duct part increases in cross-section from a side of the intake port to a side of the exhaust port at least in an area where the curved portion is formed. | 06-14-2012 |
20120255291 | Power generating apparatus of renewable energy type - A power generating apparatus of renewable energy includes a tower, a nacelle provided at the tower, a main shaft housed in the nacelle and rotating with a blade, a hydraulic pump housed in the nacelle and connected to the main shaft, a hydraulic motor driven by operating oil supplied from the hydraulic pump, a generator connected to the hydraulic motor, and a piping between the hydraulic pump and the hydraulic motor. The hydraulic motor is housed in at least one of the nacelle and the end part of the tower, the generator is housed in at least one of the nacelle and the end part of the tower, and at least one of the hydraulic motor and the generator is arranged in a space excluding an area between the main shaft and the hydraulic pump; and a rear end wall surface of a wall of the nacelle. | 10-11-2012 |
20120256425 | WIND POWER GENERATING APPARATUS - A wind power generating apparatus provided with heat exhausting measures for an in-rotor-head device is provided. In a wind power generating apparatus in which a rotor head that rotates upon receiving wind power on a wind turbine blade drives a generator that is installed inside a nacelle and thereby generates electric power, the nacelle is installed on an upper end portion of a tower that is erected on a foundation, and a hub control panel is installed inside the rotor head, a ventilating fan that forms a flow inside and outside of an enclosure of the hub control panel is provided in the enclosure. | 10-11-2012 |
20120257970 | POWER GENERATING APPARATUS OF RENEWABLE ENERGY TYPE - A power generating apparatus of renewable energy type includes a tower, a nacelle which is supported rotatably by a tip portion of the tower; a main shaft rotatable with a blade; a hydraulic pump which is housed in the nacelle and is driven by rotation of the main shaft; a hydraulic motor which is driven by operating oil supplied from the hydraulic pump; a generator which is coupled to the hydraulic motor; an operating-oil line which is provided between the hydraulic pump and the hydraulic motor and through which the operating oil circulates; a cooling-medium line through which cooling medium for cooling the operating oil circulates via an intermediate heat exchanger; and a main heat exchanger which cools the cooling medium by heat exchange with cool water source around a base portion of the tower, and one of the operating-oil line. | 10-11-2012 |
20120299307 | WIND TURBINE GENERATOR - With a simple and low-cost structure, it is possible to introduce a sufficient amount of external wind while suppressing power consumption, and thereby, inside a nacelle and a tower are satisfactorily cooled. A wind turbine generator, in which a rotor head generates power by driving a generator installed inside a nacelle and in which the nacelle is installed at a top end of a tower, wherein an introducing vent that takes the external wind into an internal space in the wind turbine generator is provided at a portion of an outer circumference surface of the tower or the nacelle that receives positive pressure due to the external wind; and an exhaust vent that externally exhausts cooling air in the internal space is provided at a portion of an outer circumference surface of the tower or the nacelle that receives the negative pressure due to the external wind. | 11-29-2012 |