IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0363166
(2012-01-31)
|
등록번호 |
US-8684682
(2014-04-01)
|
우선권정보 |
WO-PCT/JP2011/058647 (2011-04-05); WO-PCT/JP2011/068284 (2011-08-10) |
발명자
/ 주소 |
- Akashi, Yu
- Matsuo, Takeshi
- Sato, Shinsuke
- Kameda, Takuro
- Morii, Yoshiyuki
- Hamano, Fumio
|
출원인 / 주소 |
- Mitsubishi Heavy Industries, Ltd.
|
대리인 / 주소 |
Kanesaka Berner & Partners, LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
10 |
초록
▼
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 d
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.
대표청구항
▼
1. A power generating apparatus of renewable energy type which generates power from renewable energy, comprising: a tower;a nacelle which is supported rotatably by a tip portion of the tower;a main shaft which is housed in the nacelle and rotates with a blade;a hydraulic pump which is housed in the
1. A power generating apparatus of renewable energy type which generates power from renewable energy, comprising: a tower;a nacelle which is supported rotatably by a tip portion of the tower;a main shaft which is housed in the nacelle and rotates 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; anda main heat exchanger which cools the cooling medium by heat exchange with cool water source which is at least one of sea water, lake water, river water or groundwater around a base portion of the tower,wherein at least one of the operating-oil line or the cooling-medium line comprises: a first piping which is supported on a nacelle side;a second piping which is supported on a tower side; anda connection part which connects the first piping and the second piping so that the first piping and the second piping are relatively rotatable. 2. The power generating apparatus of renewable energy type according to claim 1, wherein the hydraulic motor is provided between the tip portion and the base portion of the tower,wherein the operating-oil line extends between the hydraulic pump arranged in the nacelle and the hydraulic motor arranged in the tower,wherein the operating-oil line comprises the first piping, the second piping and the connection part, andwherein the first piping is connected to the hydraulic pump and the second piping is connected to the hydraulic motor. 3. The power generating apparatus of the renewable energy type according to claim 1, wherein the hydraulic motor is supported on the nacelle side and the intermediate heat exchanger is supported on the tower side,wherein the operating-oil line includes an operating-oil circulation line through which the operating oil circulates between the hydraulic pump and the hydraulic motor, and an operating-oil branch line which branches from a low-pressure side of the operating-oil circulation line and through which the operating line returns to the operating-oil circulation line via the intermediate heat exchanger,wherein the operating-oil branch line comprises the first piping, the second piping and the connection part, andwherein the first piping is connected to the operating-oil circulation line and the second piping is connected to the intermediate heat exchanger. 4. The power generating apparatus of renewable energy type according to claim 1, wherein the hydraulic motor and the generator are arranged in the nacelle and the intermediate cooler is supported on the nacelle side,wherein the cooling-medium line comprises the first piping, the second piping and the connection part, andwherein the first piping is connected to an intermediate heat exchanger side and the second piping is connected to a main heat exchanger side. 5. The power generating apparatus of renewable energy type according to claim 1, comprising: at least one first flow path in which fluid flows from the nacelle side to the tower side;at least one second flow path in which fluid flows from the tower side to the nacelle side;a tubular member in which the at least one first flow and the at least one second flow path are formed;a first jacket which is provided around the tubular member and which includes a circular flow path which communicates with the first piping through a first communication opening; anda second jacket which is provided around the tubular member and which includes a circular flow path which communicates with the second piping through a second communication opening,wherein the first jacket and the second jacket are fixed to the tubular member via a bearing to be freely rotatable relative to the tubular member. 6. The power generating apparatus of renewable energy type according to claim 5, wherein, the tubular member has a cable-housing piping on an inner side of the first and second flow paths, the cable-housing piping housing a cable extending from the nacelle side to the tower side. 7. The power generating apparatus of renewable energy type according to claim 1, further comprising: a water supply source which supplies water to the cooling-medium line; anda pump which circulates cooling-medium in the cooling-medium line, the cooling-medium being formed by adding antifreeze to the water. 8. The power generating apparatus of renewable energy type according to claim 7, wherein the water supply source is a cooling-medium tank which stores the cooling medium, andwherein the cooling-medium tank is arranged in an upper part of the tower and opens to a space inside the tower. 9. The power generating apparatus of renewable energy type according to claim 7, wherein the water supply source is a cooling-medium tank which stores the cooling medium, andwherein the cooling-medium tank is arranged in an upper part of the tower and is sealed off from a space inside the tower. 10. The power generating apparatus of renewable energy type according to claim 1, further comprising: a casing which houses the main heat exchanger and has an inlet for the cool water source; anda filter which is provided at the inlet for the cool water source of the casing to prevent foreign objects contained in the cool water source from entering the casing. 11. The power generating apparatus of renewable energy type according to claim 1, wherein the main heat exchanger is arranged on a base on which the tower is installed. 12. The power generating apparatus of renewable energy type according to claim 11, further comprising: a flow-rate regulating structure which is provided around a heat exchanger tube of the main heat exchanger to regulate a flow rate of the cool water source,wherein a distance between the flow-rate regulating structure and the heat exchanger tube has an upper limit which is set based on a distance at which a set heat transfer coefficient is achieved in the heat exchanger tube, and a lower limit which is set based on a distance at which foreign objects adhered to the heat exchanger tube is detached. 13. The power generating apparatus of renewable energy type according to claim 11, further comprising: a spray nozzle which sprays the cool water source to a surface of a heat exchanger tube of the main heat exchanger. 14. The power generating apparatus of renewable energy type according to claim 11, wherein the main heat exchanger or the intermediate heat exchanger is a multitube heat exchanger having a plurality of heat exchanger tubes. 15. The power generating apparatus of renewable energy type according to claim 1, wherein the power generating apparatus of renewable energy type is a wind turbine generator,wherein the tower extends upward in a vertical direction from the base portion toward the tip portion, andwherein the main shaft rotates upon receiving wind on the blade. 16. The power generating apparatus of renewable energy type according to claim 1, further comprising: a generator cooler which is housed in the nacelle and which cools the generator by air drawn in from a periphery of the nacelle. 17. A power generating apparatus of renewable energy type which generates power from renewable energy, comprising: a tower;a nacelle which is supported rotatably at a tip portion of the tower;a main shaft which is housed in the nacelle and rotates 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 housed in the nacelle and which is driven by operating oil supplied from the hydraulic pump;a generator which is coupled to the hydraulic motor;an operating-oil circulation line which is provided inside the nacelle and between the hydraulic pump and the hydraulic motor, and through which the operating oil circulates;an operating-oil branch line which branches from the operating-oil circulation line and extends between a base portion of the tower and the inside of the nacelle; anda main heat exchanger which cools the operating oil by heat exchange with cool water source which is at least one of sea water, lake water, river water or groundwater around a base portion of the tower;wherein the operating-oil branch line comprises:a first piping which is supported on a nacelle side;a second piping which is supported on a tower side; anda connection part which connects the first piping and the second piping so that the first piping and the second piping are relatively rotatable. 18. A power generating apparatus of renewable energy type which generates power from renewable energy, comprising: a tower;a nacelle which is supported rotatably at a tip portion of the tower;a main shaft which is housed in the nacelle and rotates 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 circulation line which is provided between the hydraulic pump and the hydraulic motor and through which the operating oil circulates; anda main heat exchanger which cools the operating oil by heat exchange with a cool water source which is at least one of sea water, lake water, river water or groundwater around a base portion of the tower; andan operating-oil branch line which branches from the operating-oil circulation line,wherein at least one of the operating oil circulation line or the operating-oil branch line comprises: a first piping which is supported on a nacelle side;a second piping which is supported on a tower side; anda connection part which connects the first piping and the second piping so that the first piping and the second piping are relatively rotatable, andwherein the power generating apparatus of renewable energy type further comprises a generator cooler which is housed in the nacelle and which cools the generator by air drawn in from a periphery of the nacelle.
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