Wind turbine blade with longitudinally extending flow guiding device having a plate-shaped element
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03B-003/12
F03D-001/06
출원번호
US-0500573
(2010-10-08)
등록번호
US-9303621
(2016-04-05)
우선권정보
EP-09172592 (2009-10-08)
국제출원번호
PCT/EP2010/065078
(2010-10-08)
§371/§102 date
20120405
(20120405)
국제공개번호
WO2011/042530
(2011-04-14)
발명자
/ 주소
Fuglsang, Peter
Bove, Stefano
Grabau, Peter
Subrahmanyam, V.v.
Lund, Brian
Jensen, Lars E.
Radhakrishnan, Sreeram Kottumuklu
출원인 / 주소
LM GLASFIBER A/S
대리인 / 주소
Nath, Goldberg & Meyer
인용정보
피인용 횟수 :
4인용 특허 :
7
초록▼
A wind turbine blade (10) for a rotor of a wind turbine (2) is provided with a longitudinally extending flow guiding device (70, 170) attached to the profiled contour. The flow guiding device comprises: a base (90, 190) having a first longitudinal end (91, 191) nearest the root end (16) and a second
A wind turbine blade (10) for a rotor of a wind turbine (2) is provided with a longitudinally extending flow guiding device (70, 170) attached to the profiled contour. The flow guiding device comprises: a base (90, 190) having a first longitudinal end (91, 191) nearest the root end (16) and a second longitudinal end (92, 192) nearest the tip end (14), a first side (93, 193) nearest the leading edge (18) and a second side (94, 194) nearest the trailing edge (20), as well as a first surface (95, 195) and a second surface (96, 196), the first surface of the base being attached to the profiled contour, and the second surface facing away from the profiled contour. A longitudinally extending substantially plate-shaped element (97, 197) protrudes from the second surface (96, 196) of the base (90, 190).
대표청구항▼
1. A wind turbine blade (10) for a rotor of a wind turbine (2) having a substantially horizontal rotor shaft, said rotor having a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8), the blade having a longitudinal direction (r) with a tip end (
1. A wind turbine blade (10) for a rotor of a wind turbine (2) having a substantially horizontal rotor shaft, said rotor having a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8), the blade having a longitudinal direction (r) with a tip end (14) and a root end (16) and a transverse direction, the blade comprising: a profiled contour (40, 42, 50) including a pressure side and a suction side, as well as a leading edge (18) and a trailing edge (20) with a chord having a chord length extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift, characterised in thatthe wind turbine blade is provided with a longitudinally extending flow guiding device (70, 170) on the pressure side of the blade attached to the profiled contour, the flow guiding device having:a base (90, 190) having a first longitudinal end (91, 191) nearest the root end (16) and a second longitudinal end (92, 192) nearest the tip end (14),a first side (93, 193) nearest the leading edge (18) and a second side (94, 194) nearest the trailing edge (20), as well asa first surface (95, 195) and a second surface (96, 196), the first surface of the base being attached to the profiled contour, and the second surface facing away from the profiled contour, whereina plate-shaped element (97, 197) protrudes from the second surface (96, 196) of the base (90, 190) in direction from the first end (91, 191) towards the second end (92, 192) such that it extends substantially in the longitudinal direction of the blade and the base, wherein the plate-shaped element is perpendicular to the airflow, wherein an angle between the longitudinal direction and a longitudinal axis of the blade is less than 30 degrees, wherein the plate-shaped element forms a first angle with the base, wherein the first angle with the base is not a perpendicular angle, and whereinthe flow guiding device (70, 170) is arranged so as to generate a separation of airflow from the pressure side of the blade at a point between the flow guiding device (70, 170) and the trailing edge (20) of the blade, when the blade is impacted by the incident airflow. 2. A wind turbine according to claim 1, wherein the profiled contour is divided into: a root region (30) having a substantially circular or elliptical profile closest to the hub,an airfoil region (34) having a lift-generating profile furthest away from the hub, anda transition region (32) between the root region (30) and the airfoil region (34), the transition region (32) having a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift-generating profile of the airfoil region. 3. A wind turbine blade according to claim 2, wherein the flow guiding device (70) is arranged in the transition region (32) of the profiled contour on the pressure side of the blade (10). 4. A wind turbine blade according to claim 3, wherein the flow guiding device extends substantially along an entire longitudinal extent of the transition region. 5. A wind turbine blade according to claim 2, wherein the flow guiding device extends into the airfoil region. 6. A wind turbine blade according to claim 1, wherein the plate-shaped element extends substantially along the entire longitudinal extent of the base. 7. A wind turbine blade according to claim 1, wherein the plate-shaped element protrudes from the first side or the second side of the base. 8. A wind turbine blade according to claim 1, wherein the plate-shaped element protrudes from a point between the first side and the second side of the base, e.g. a middle part. 9. A wind turbine blade according to claim 1, wherein the plate-shaped element is substantially planar. 10. A wind turbine blade according to claim 1, wherein the plate-shaped element is curved, e.g. convex or concave. 11. A wind turbine blade according to claim 1, wherein the plate-shaped element at a point of attachment forms a first angle with the base, the first angle being maximum 80 degrees. 12. A wind turbine blade according to claim 11, wherein the plate-shaped element is angled towards the trailing edge of the blade. 13. A wind turbine blade according to claim 11, wherein the plate-shaped element is angled towards the leading edge of the blade. 14. A wind turbine blade according to claim 1, wherein the base is formed of a flexible material. 15. A wind turbine blade according to claim 1, wherein the first surface of the base is curved. 16. A wind turbine blade according to claim 15, wherein the curve of the first surface varies in the longitudinal direction of the base. 17. A wind turbine blade according to claim 1, wherein the plate-shaped element at a point of attachment forms a first angle with the base, the first angle being maximum 70 degrees. 18. A wind turbine blade according to claim 1, wherein the plate-shaped element at a point of attachment forms a first angle with the base, the first angle being maximum 60 degrees. 19. A wind turbine according to claim 1, wherein the flow guiding device is non-adjustable. 20. A wind turbine according to claim 1, wherein the flow guiding device increases a lift of a longitudinal section of the blade.
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