Wind turbine rotor blade with porous window and controllable cover member
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-007/04
F03D-003/06
출원번호
US-0961813
(2010-12-07)
등록번호
US-8128364
(2012-03-06)
발명자
/ 주소
Pesetsky, David Samuel
출원인 / 주소
General Electric Company
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
3인용 특허 :
6
초록▼
A wind turbine blade includes a porous window defined in the suction side of the blade. The porous window is permeable to airflow from within an internal cavity of the blade through the suction side. A deployable cover member is configured with the porous window and is variably positionable from a f
A wind turbine blade includes a porous window defined in the suction side of the blade. The porous window is permeable to airflow from within an internal cavity of the blade through the suction side. A deployable cover member is configured with the porous window and is variably positionable from a fully closed position wherein airflow through the porous window is blocked, to a fully open position wherein airflow is established through an entirety of the porous window. An actuating mechanism is disposed within the internal cavity of the blade and is configured with the cover member to move the cover member between the fully closed and fully open positions in response to a control signal.
대표청구항▼
1. A wind turbine blade, comprising: a pressure side, and a suction side, said pressure side and said suction side joined at a leading edge and a trailing edge and defining an internal cavity of said blade;a porous window defined in said suction side, said porous window comprising a plurality of ope
1. A wind turbine blade, comprising: a pressure side, and a suction side, said pressure side and said suction side joined at a leading edge and a trailing edge and defining an internal cavity of said blade;a porous window defined in said suction side, said porous window comprising a plurality of openings that render said porous window permeable to airflow from within said internal cavity through said suction side;a deployable cover member configured with said porous window, said cover member variably positionable from a fully closed position wherein said plurality of openings are blocked to a fully open position wherein airflow is established through an entirety of said plurality of opening within said porous window;said deployable cover member configured for movement between said fully closed and said fully open positions in a plane that extends across said porous window essentially coextensive with said suction side; andan actuating mechanism disposed within said internal cavity and configured with said cover member to move said cover member between said fully closed and fully open positions in response to a control signal. 2. The wind turbine blade as in claim 1, wherein said actuating mechanism is an active device that moves said cover member in response to an active control signal. 3. The wind turbine blade as in claim 2, wherein said actuating mechanism is in communication with a controller, said controller generating said control signals to variably position said cover member as a function of a varying condition of said blade. 4. The wind turbine blade as in claim 1, wherein said actuating mechanism is a passive device configured with said cover member to bias said cover member to either of said fully closed or fully open positions and allow movement of said cover member to the opposite position at a defined setpoint condition experienced by said blade. 5. The wind turbine blade as in claim 1, wherein said actuating mechanism comprises a spring-biased core member around which said cover member wraps as said cover member moves from said fully closed position to said fully open position. 6. The wind turbine blade as in claim 5, further comprising a driven roller that pulls said cover member from said core to said fully closed position, and an attachment member that connects said cover member to said driven roller. 7. The wind turbine blade as in claim 6, wherein said attachment member comprises a plurality of strip members spaced apart along said cover member. 8. The wind turbine blade as in claim 6, wherein said attachment member comprises a porous web material that is coextensive with said cover member and has an airflow porosity so as not to inhibit airflow through said porous window in the open position of said cover member. 9. The wind turbine blade as in claim 1, wherein said actuating mechanism comprises a reversibly driven roller that engages and alternately moves said cover member between said fully open and fully closed positions. 10. The wind turbine blade as in claim 9, wherein said cover member comprises a looped member having alternating permeable and non-permeable sections. 11. The wind turbine blade as in claim 1, further comprising at least one inlet air passage in airflow communication with said porous window, said inlet air passage further comprising an actuatable cover plate that moves from a closed position wherein said inlet air passage is blocked to an open position wherein said inlet air passage is unblocked to allow airflow through said porous window. 12. The wind turbine blade as in claim 11, further comprising an actuator configured with said cover plate, said actuator moving said cover plate between said open and closed positions in response to a control signal. 13. The wind turbine blade as in claim 12, further comprising an active actuating mechanism configured with said cover member to move said cover member between said fully closed and fully open positions in response to a control signal, said actuating mechanism and said cover plate actuator in communication with a controller that generates said control signals to variably position said cover member and said cover plate as a function of a varying condition of said blade. 14. A wind turbine blade, comprising: a pressure side, and a suction side, said pressure side and said suction side joined at a leading edge and a trailing edge and defining an internal cavity of said blade;a porous window defined in said suction side, said porous window permeable to airflow from within said internal cavity through said suction side;a deployable cover member configured with said porous window, said cover member variably positionable from a fully closed position wherein airflow through said porous window is blocked to a fully open position wherein airflow is established through an entirety of said porous window;an actuating mechanism disposed within said internal cavity and configured with said cover member to move said cover member between said fully closed and fully open positions in response to a control signal;said actuating mechanism comprising an active device that moves said cover member in response to an active control signal, said actuating mechanism in communication with a controller, said controller generating said control signals to variably position said cover member as a function of a varying condition of said blade; andfurther comprising a plurality of said porous windows and respective said cover members, said controller in communication with each of said plurality of cover members, wherein said cover members are independently positionable to generate varying coverage between different said porous windows. 15. A wind turbine, comprising: a plurality of wind turbine blades, each of said blades further comprising a pressure side, and a suction side, said pressure side and said suction side joined at a leading edge and a trailing edge and defining an internal cavity of said blade;a porous window defined in said suction side, said porous window permeable to airflow therethrough;a deployable cover member configured with said porous window, said cover member variably positionable from a fully closed position wherein airflow through said porous window is blocked to a fully open position wherein airflow is established through an entirety of said porous window;said deployable cover member configured for movement between said fully closed and said fully open positions in a plane across said porous window that is essentially coextensive with said suction side; andan actuating mechanism disposed within said internal cavity and configured with said cover member to move said cover member between said fully closed and fully open positions in response to a control signal. 16. The wind turbine as in claim 15, wherein said actuating mechanism of said wind turbine blades is an active device that moves said cover member in response to an active control signal, said actuating mechanisms in communication with a respective said controller that generates said control signals, said controllers in communication with a central wind turbine controller to variably position and coordinate movement of said cover members as a function of a varying condition of said blade. 17. The wind turbine as in claim 16, wherein said central wind turbine controller is in communication with at least one condition sensor, wherein said central wind turbine controller generates control signals to said respective blade controllers as a function of a condition sensed by said condition sensor.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.