Rotor assembly for a wind turbine comprising a pair of cables
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-007/02
F03D-001/06
출원번호
US-0787499
(2014-05-23)
등록번호
US-10087914
(2018-10-02)
우선권정보
BE-2013/0364 (2013-05-24)
국제출원번호
PCT/EP2014/060604
(2014-05-23)
국제공개번호
WO2014/187933
(2014-11-27)
발명자
/ 주소
Leijnen, Peter
출원인 / 주소
JOVAL NV
대리인 / 주소
Workman Nydegger
인용정보
피인용 횟수 :
0인용 특허 :
2
초록▼
A rotor assembly for a wind turbine is provided. The rotor assembly includes a central hub with a central rotation axis, and a plurality of vanes. Each of the vanes is attached to the central hub, and each of the vanes includes in part a cable system which cooperates with each respective vane and th
A rotor assembly for a wind turbine is provided. The rotor assembly includes a central hub with a central rotation axis, and a plurality of vanes. Each of the vanes is attached to the central hub, and each of the vanes includes in part a cable system which cooperates with each respective vane and the central hub. The cable system includes a pair of cables. Both of the cables are aligned with the longitudinal axis of the respective vane, viewed along the central rotation axis. And both of the cables are on either side of a plane covered by the longitudinal axis of the respective vane. The plurality of vanes are only structurally interconnected via the central hub, and the cable system of each of the vanes has only one single pair of cables.
대표청구항▼
1. A rotor assembly for a wind turbine, the rotor assembly comprising: a central hub with a central rotation axis; anda plurality of vanes, each vane of said plurality of vanes attached to the central hub by its central end, and each extending from the central end up to its radial end along a longit
1. A rotor assembly for a wind turbine, the rotor assembly comprising: a central hub with a central rotation axis; anda plurality of vanes, each vane of said plurality of vanes attached to the central hub by its central end, and each extending from the central end up to its radial end along a longitudinal axis substantially radially with respect to the central rotation axis, and each vane of said plurality of vanes also including an intermediate point situated between the central end and the radial end;a central vane part which extends from the central end to the intermediate point;a radial vane part which is attached to the central vane part and extends from the intermediate point to the radial end, only the radial vane part comprising a wing having a shape which is suitable to be driven by the wind; anda cable system which cooperates with the central hub, the cable system comprising only a single pair of cables per each vane of said plurality of vanes, the pair of cables each being attached between respective vane attachment points at a location between the central end and the radial end and hub attachment points at the location of the central hub, each of the pair of cables being fitted in such a manner that:both of said cables are aligned with the longitudinal axis of the respective vane, viewed along the central rotation axis; andsaid cables being on opposing sides of a plane covered by the longitudinal axis of the respective vane,wherein the plurality of vanes are only structurally interconnected via the central hub, andwherein each of the central vane parts comprises a tube extending along the longitudinal axis of the respective vane; and each of the radial vane parts comprises a tube extending along the longitudinal axis of the respective vane, the tube of the radial vane part being adapted to be fitted to the tube of the central vane part,wherein for each vane of said plurality of vanes, the wing is rotatably attached to the tube of the radial vane part,wherein the wing, comprises an internal cavity extending along the longitudinal axis of the respective van into which the tube of the radial vane part can be introduced,wherein the respective attachment points are at an intermediate attachment location in between the intermediate point and the radial end, andwherein: the respective vane attachment points are located on the tube of the radial vane part; andthe wing comprises, for each of the cables of each vane of said plurality of vanes, an opening through which the cable system extends to the intermediate attachment location, the opening being dimensioned such that it allows for a predetermined range of rotation of the wing around the longitudinal axis. 2. The rotor assembly according to claim 1, wherein the rotor assembly does not comprise any further elements forming a direct structural connection between two of said plurality of vanes at a location other than said central end. 3. The rotor assembly according to claim 1, wherein, for each vane, a distance from the longitudinal axis of the vane to the respective vane attachment points is smaller than a distance from the longitudinal axis of the vane to the hub attachment points. 4. The rotor assembly according to claim 1, wherein for each vane of said plurality of vanes, the tube of the radial vane part is fitted to the tube of the central vane part at a location of the intermediate point. 5. The rotor assembly according to claim 1, wherein the cable system of each vane of said plurality of vanes comprises at least one vane attachment connector configured to: attach at least one of the cables to the tube of the radial vane part; andto interact with the opening such that an actual range of rotation of the wing is limited to the predetermined range of rotation of the wing around the longitudinal axis. 6. The rotor assembly according to claim 1, wherein both cables are attached at vane attachment points at the location of the intermediate point. 7. The rotor assembly according to claim 1, wherein the central vane part has a length in the range of 20% to 200% of the length of the radial vane part. 8. A method of manufacturing a rotor assembly according to claim 1, the method comprising: producing the wing as a twisted extruded profile including twisting the wing about the longitudinal axis of the wing such that said twisted extruded profile has a degree of twist per meter of length of the wing in the range of 0.5° to 5°; andmanufacturing the twisted extruded profile by means of an extrusion process using a twisted extrusion die channel with a predetermined degree of twist per meter of length of a die channel along the longitudinal axis of the wing in the range of 1° to 5°. 9. A rotor for a wind turbine, the rotor assembly comprising: a central hub with a central rotation axis; anda plurality of vanes, each vane of said plurality of vanes attached to the central hub by a central end of each, and each extending from the central end up to a radial end along a longitudinal axis substantially radially with respect to the central rotation axis, and each vane of said plurality of vanes also including an intermediate point situated between the central end and the radial end;a central vane part which extends from the central end to the intermediate point;a radial vane part which is attached to the central vane part and extends from the intermediate point to the radial end, only the radial vane part comprising a wing having a shape which is suitable to be driven by the wind; anda cable system which cooperates with the central hub, the cable system comprising only a single pair of cables per each vane of said plurality of vanes, the pair of cables each being attached between respective vane attachment points at a location of the central hub, each of the pair of cables being fitted in such a manner that:both of said cables are aligned with the longitudinal axis of the respective vane, viewed along the central rotation axis; andsaid cables being on opposing sides of a plane covered by the longitudinal axis of the respective vane,wherein the plurality of vanes are only structurally interconnected via the central hub, andwherein each of the central vane parts comprises a tube extending along the longitudinal axis of the respective vane; and each of the radial vane parts comprises a tube extending along the longitudinal axis of the respective vane, the tube of the radial vane part being adapted to be fitted to the tube of the central vane part, andwherein both cables are attached at vane attachment points at the location of the intermediate point, wherein the vane attachment points are located on one of the tubes at a location which is not covered by the wing. 10. A rotor assembly for a wind turbine, the rotor assembly comprising: a central hub with a central rotation axis; anda plurality of vanes, each vane of said plurality of vanes attached to the central hub by a central end, and each extending from the central end up to a radial end along a longitudinal axis substantially radially with respect to the central rotation axis, and each vane of said plurality of vanes including an intermediate point situated between the central end and the radial end;a central vane part which extends from the central end to the intermediate point;a radial vane part which is attached to the central vane part and extends from the intermediate point to the radial end, only the radial vane part comprising a wing having a shape which is suitable to be driven by the wind; anda cable system which cooperates the central hub, the cable system comprising only a single pair of cables per each vane of said plurality of vanes, the pair of cables each being attached between respective vane attachment points at a location between the central end and the radial end and hub attachment points at the location of the central hub, each of the pair of cables being fitted in such a manner that:both of said cables are aligned with the longitudinal axis of the respective vane, viewed along the central rotation axis; andsaid cables being on opposing sides of a plane covered by the longitudinal axis of the respective vane,wherein the plurality of vanes are only structurally interconnected via the central hub, and the cable system of each of said vanes has only one single pair of cableswherein both cables are attached at vane attachment points at an intermediate attachment location in between the intermediate point and the radial end, andwherein: the vane attachment points are located on the tube of the radial vane part; andthe wing comprises, for each of the cables of each vane of said plurality of vanes, an opening through which the cable system extends to the intermediate attachment location, the opening being dimensioned such that it allows for a predetermined range of rotation of the wing around the longitudinal axis. 11. The rotor assembly according to claim 10, wherein the rotor assembly does not comprise any further elements forming a direct structural connection between two of said plurality of vanes at a location other than said central end. 12. The rotor assembly according to claim 10, wherein, for each vane, a distance from the longitudinal axis of the vane to the respective vane attachment points is smaller than a distance from the longitudinal axis of the vane to the hub attachment points. 13. The rotor assembly according to claim 10, wherein each of the central vane parts comprises a tube extending along the longitudinal axis of the respective vane; and each of the radial vane parts comprises a tube extending along the longitudinal axis of the respective vane, the tube of the radial vane part being adapted to be fitted to the tube of the central vane part. 14. The rotor assembly according to claim 10, wherein for each vane of said plurality of vanes, the tube of the radial vane part is fitted to the tube of the central vane part at a location of the intermediate point. 15. The rotor assembly according to claim 13, wherein for each vane of said plurality of vanes, the wing is rotatably attached to the tube of the radial vane part. 16. The rotor assembly according to claim 15, wherein the wing, comprises an internal cavity, extending along the longitudinal axis of the vane, into which the tube of the radial vane part can be introduced, such that said wing is rotatably attached to the tube of the radial vane part. 17. The rotor assembly according to claim 10, wherein the cable system each vane of said plurality of vanes comprises at least one vane attachment connector configured to: attach at least one of the cables to the tube of the radial vane part; andto interact with the opening such that an actual range of rotation of the wings is limited to the predetermined range of rotation of the wing around the longitudinal axis. 18. The rotor assembly according to claim 10, wherein both cables are attached at vane attachment points at the location of the intermediate point. 19. The rotor assembly according to claim 10, wherein the central vane part has a length in the range of 20% to 200% of the length of the radial vane part.
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이 특허에 인용된 특허 (2)
Ducker William L. (Lubbock TX), Adjustable vane windmills.
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