Hub and bearing system and a turbine comprising the hub and bearing system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-003/06
F03D-001/06
F03D-080/70
출원번호
US-0781675
(2013-05-07)
등록번호
US-9938959
(2018-04-10)
우선권정보
WO-PCT/EP2013/057048 (2013-04-03)
국제출원번호
PCT/EP2013/059494
(2013-05-07)
국제공개번호
WO2014/161607
(2014-10-09)
발명자
/ 주소
Verhulst, Laurens
Welling, Koos
Van Pommeren, Jascha
출원인 / 주소
AKTIEBOLAGET SKF
대리인 / 주소
Peckjian, Bryan
인용정보
피인용 횟수 :
0인용 특허 :
3
초록▼
A bearing system supports a plurality of turbine blades; each blade being rotatable about a pitch axis relative to a bearing system hub. The hub, comprising a plurality of static frames having a conical structure including two or more legs with openings therebetween, is connected to a main shaft of
A bearing system supports a plurality of turbine blades; each blade being rotatable about a pitch axis relative to a bearing system hub. The hub, comprising a plurality of static frames having a conical structure including two or more legs with openings therebetween, is connected to a main shaft of the turbine. Dynamic frames include a conical structure and two or more legs with openings therebetween. Legs of the static frame pass through openings between the legs of the corresponding dynamic frame, and legs of the dynamic frame pass through openings between legs of the corresponding static frame. Each dynamic frame is connected to one of the blades and is rotationally mounted to the corresponding static frame by a first bearing unit and a second bearing unit, distally arranged along the pitch axis from the first bearing unit. A central hub portion interconnects first shaft sections of the static frames.
대표청구항▼
1. A bearing system adapted to support a plurality of blades of a turbine, such that each blade is rotatable about a pitch axis relative to a hub of the bearing system, wherein: the hub is configured for being connected to a main shaft of the turbine and comprises a plurality of static frames which
1. A bearing system adapted to support a plurality of blades of a turbine, such that each blade is rotatable about a pitch axis relative to a hub of the bearing system, wherein: the hub is configured for being connected to a main shaft of the turbine and comprises a plurality of static frames which include a conical structure and have two or more legs with openings in between, the static frames being configured for cooperating with corresponding dynamic frames, which comprise a conical structure and have two or more legs with openings in between, whereby the legs of the static frame pass through openings between the legs of the corresponding dynamic frame, and the legs of the dynamic frame pass through openings between the legs of the corresponding static frame;each dynamic frame is configured for being connected to one of the blades, each dynamic frame is rotationally mounted to the corresponding static frame by a first bearing unit and a second bearing unit arranged at a distance along the pitch axis from the first bearing unit,each static frame further comprises a first shaft section having a first ring of the first bearing unit mounted thereto and a second shaft section having a first ring of the second bearing unit mounted thereto;the hub further comprises a central portion which interconnects the first shaft sections of the static frames. 2. The bearing system according to claim 1, wherein the central portion extends along an axis of the main shaft and interconnects a front axial side and a rear axial side of the hub. 3. The bearing system according to claim 1, configured in accordance with at least one of: wherein the static frame is conically shaped towards at least one of the first bearing unit and the second bearing unit, andwherein the dynamic frame is conically shaped towards at least one of the first bearing unit and the second bearing unit. 4. The bearing system according to claim 1, wherein the legs of the static frame and the legs of the dynamic frame pass through the respective openings therebetween at a widest diameter of the static frame and the dynamic frame. 5. The bearing system according to claim 4, wherein the static frames and the dynamic frames each have three legs and the dimensions of the static frame legs and the openings therebetween and the dimensions of the dynamic frame legs and the openings therebetween are configured to enable a rotating of the dynamic frame relative to the static frame over an angle of at least 90 degrees. 6. The bearing system according to claim 1, wherein at least one of: (a) an inner-diameter of the first bearing unit and(b) an inner-diameter of the second bearing unitis less than half a diameter of a root of the blade. 7. The bearing system according to claim 1, wherein at least one of the first bearing unit and the second bearing unit comprise self-aligning bearing units. 8. The bearing system according to claim 1, wherein the second ring of the first bearing unit is the inner ring of the first bearing unit, and wherein the second ring of the second bearing unit is the inner ring of the second bearing unit. 9. The bearing system according to claim 1, wherein at least one of the first bearing unit and the second bearing unit comprise plain bearings. 10. The bearing system according to claim 1, wherein at least one of the first bearing unit and the second bearing unit comprise a radial bearing and an axial bearing. 11. The bearing system according to claim 1, the bearing system further comprising at least one pitch-drive motor, wherein the at least one pitch-drive motor is configured for adjusting the pitch of the plurality of blades. 12. The bearing system according to claim 11, wherein the at least one pitch-drive motor is configured for rotating the dynamic frame via one of: a gear-ring, a belt drive or a hydraulic actuator. 13. The bearing system according to claim 1, wherein the dynamic frames are integrated into the blades. 14. The bearing system according to claim 1, the bearing system further comprising a fixation element configured for securing a position of at least one of the dynamic frames relative to the static frame for enabling a replacement of at least one of the first bearing unit and the second bearing unit. 15. The bearing system according to claim 1, the bearing system further comprising three static frames being configured to cooperate with corresponding dynamic frames. 16. A turbine comprising: a generator having a main shaft for rotating the generator anda bearing system, the bearing system adapted to support a plurality of blades of a turbine, such that each blade is rotatable about a pitch axis relative to a hub of the bearing system, wherein:the hub is configured for being connected to a main shaft of the turbine and comprises a plurality of static frames which include a conical structure and have two or more legs with openings in between, the static frames being configured for cooperating with corresponding dynamic frames, which comprise a conical structure and have two or more legs with openings in between, whereby the legs of the static frame pass through openings between the legs of the corresponding dynamic frame, and the legs of the dynamic frame pass through openings between the legs of the corresponding static frame;each dynamic frame is configured for being connected to one of the blades, each dynamic frame is rotationally mounted to the corresponding static frame by a first bearing unit and a second bearing unit arranged at a distance along the pitch axis from the first bearing unit,each static frame further comprises a first shaft section having a first ring of the first bearing unit mounted thereto and a second shaft section having a first ring of the second bearing unit mounted thereto;the hub further comprises a central portion which interconnects the first shaft sections of the static frames,wherein the bearing system is integrated into the turbine. 17. The turbine according to claim 16, wherein the central portion of the hub is connected to main shaft. 18. The turbine according to claim 16, wherein the turbine is one of a wind turbine or a tidal energy turbine.
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