IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0294065
(2011-11-10)
|
등록번호 |
US-8601804
(2013-12-10)
|
발명자
/ 주소 |
- Akashi, Yu
- Matsuo, Takeshi
- Sato, Shinsuke
- Kameda, Takuro
|
출원인 / 주소 |
- Mitsubishi Heavy Industries, Ltd.
|
대리인 / 주소 |
Kanesaka Berner & Partners, LLP
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
7 |
초록
▼
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 pum
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.
대표청구항
▼
1. A power generating apparatus of renewable energy type which generates power from a renewable energy source, comprising: a rotating shaft which is driven by the renewable energy source;a hydraulic pump which is driven by the rotating shaft;a hydraulic motor which is driven by operating oil supplie
1. A power generating apparatus of renewable energy type which generates power from a renewable energy source, comprising: a rotating shaft which is driven by the renewable energy source;a hydraulic pump which is driven by the rotating 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 oil line which is connected to the hydraulic pump and the hydraulic motor and which circulates the operating oil between the hydraulic pump and the hydraulic motor;an oil cooler which is connected to the oil line and which cools the operating oil by heat exchange with a cooling medium;a cooling-medium line which supplies the cooling medium to the oil cooler;a bypass line which diverges from at least one of the oil line and the cooling-medium line and merges into said at least one of the oil line and the cooling-medium line to bypass the oil cooler; anda flow regulating valve which is provided in said at least one of the oil line and the cooling-medium line that is arranged between a diverging point and a merging point of the bypass line and which regulates a flow rate of at least one of the operating oil and the cooling medium flowing into the oil cooler. 2. The power generating apparatus of the renewable energy type according to claim 1, further comprising: a heat exchanger which is provided in the cooling-medium line and which cools the cooling medium by an ambient fluid which exists around the power generating apparatus of the renewable energy type,wherein a heat exchange amount between the cooling medium and the ambient fluid in the heat exchanger is adjusted by regulating the flow rate of at least one of the operating oil and the cooling medium. 3. The power generating apparatus of the renewable energy type according to claim 1, further comprising: a generator cooler which is provided in the cooling-medium line and which cools the generator,wherein the cooling medium is used to cool the oil cooler and the generator cooler. 4. The power generating apparatus of the renewable energy type according to claim 1, further comprising: an operating-oil extraction line which is provided to extract a portion of the operation oil from the oil line and supply the extracted portion of the operating oil to a sliding part of at least one of the hydraulic pump and the hydraulic motor as lubricating oil; anda lubricating-oil cooling device which is provided in the operating-oil extraction line and which cools the extracted portion of the operating oil,wherein the lubricating-oil cooling device cools the lubricating oil to be supplied to the sliding part to keep a temperature of the lubricating oil lower than a temperature of the operating oil at an inlet of the hydraulic pump. 5. The power generating apparatus of the renewable energy type according to claim 1, further comprising: a controller which controls a flow rate of at least one of the operating oil and the cooling-medium flowing into the oil cooler by adjusting an opening degree of the flow regulating valve to adjust a temperature of the operating oil at a prescribed position of the oil line to a set temperature. 6. The power generating apparatus of the renewable energy type according to claim 1, further comprising: a tower/nacelle cooler which is provided in at least one of (i) a nacelle which houses the hydraulic pump and the hydraulic motor and (ii) a tower which supports the nacelle so as to cool air in said at least one of the nacelle and the tower,wherein the cooling medium is supplied to the tower/nacelle cooler. 7. The power generating apparatus of the renewable energy type according to claim 1, further comprising: at least one of a generator cooler and a tower/nacelle cooler which is connected in series or in parallel to the cooling-medium line, said generator cooler cooling the generator, said tower/nacelle cooler cooling one of a tower and a nacelle that house at least the hydraulic pump and the hydraulic motor,wherein the cooling medium is water to which antifreeze fluid is added and the oil cooler and said at least one of the generator cooler and the tower/nacelle cooler are cooled by the cooling medium. 8. The power generating apparatus of the renewable energy type according to claim 1, further comprising: an air blowing device which is provided in the cooling-medium line,wherein the cooling medium is air and the cooling medium is introduced to the oil cooler by the air blowing device. 9. The power generating apparatus of the renewable energy type according to claim 2, wherein the power generating apparatus of the renewable energy type is a wind turbine generator comprising a tower and a nacelle which is supported by the tower and which houses at least the hydraulic pump,wherein the power generating apparatus of the renewable energy type comprises: a transformer room which is provided in the tower or on an outer periphery of the tower and in which a transformer is provided; anda transformer-room cooler which is connected in series or in parallel to the cooling-medium line and which cools the air in the transformer room by the cooling medium that is cooled by the heat exchanger and supplied to the transformer room via the cooling-medium line, andwherein the cooling medium is water to which antifreeze is added. 10. The power generating apparatus of the renewable energy type according to claim 2, wherein the power generating apparatus of the renewable energy type is a wind turbine generator comprising a tower and a nacelle which is supported by the tower and which houses at least the hydraulic pump, andwherein the ambient fluid is air. 11. The power generating apparatus of the renewable energy type according to claim 10, wherein the heat exchanger is arranged on an upper part of the tower or in the nacelle. 12. The power generating apparatus of the renewable energy type according to claim 2, wherein the power generating apparatus of the renewable energy type is an offshore wind turbine generator which is installed offshore and which comprises a tower and a nacelle supported by the tower and which houses at least the hydraulic pump, andwherein the ambient fluid is seawater. 13. The power generating apparatus of the renewable energy type according to claim 12, wherein the heat exchanger and a transformer room in which a transformer is provided are arranged on a lower part of the tower, andwherein the cooling-medium line extends to the lower part of the tower. 14. The power generating apparatus of the renewable energy type according to claim 9, wherein at least one of the tower and the nacelle is hermetically closed from ambient air. 15. The power generating apparatus of the renewable energy type according to claim 9, wherein one of the tower and the nacelle has an intake port and an exhaust port to air-cool air in said one of the tower and the nacelle, andwherein a filter is provided in the intake port and the exhaust port to block a corrosive substance contained in the ambient air. 16. The power generating apparatus of the renewable energy type according to claim 15, wherein at least one fan is provided in one of the tower and the nacelle,wherein a shutter being capable of opening and closing freely is provided in the intake port and the exhaust port,wherein, when a temperature inside one of the tower and the nacelle is higher than a prescribed temperature, the shutter opens to ventilate the air in said one of the tower and the nacelle in a ventilation mode, andwherein, when the temperature inside one of the tower and the nacelle is not higher than the prescribed temperature, the shutter closes to circulate the air in said one of the tower and the nacelle in a circulation mode.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.