Spar cap for a wind turbine rotor blade formed from pre-cured laminate plates of varying thicknesses
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-001/06
B32B-007/02
B32B-005/02
B32B-005/18
B32B-005/24
B32B-005/26
B32B-007/12
B32B-021/04
B32B-021/10
B32B-021/14
B32B-001/00
출원번호
US-0754764
(2015-06-30)
등록번호
US-10072632
(2018-09-11)
발명자
/ 주소
Yarbrough, Aaron A.
Caruso, Christopher Daniel
출원인 / 주소
General Electric Company
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
19
초록▼
A spar cap for a rotor blade of a wind turbine may generally include an assembly of pre-cured laminate plates stacked on one top of the other, with the assembly including an outermost pre-cured plate, an innermost pre-cured plate positioned opposite the outermost pre-cured plate and a plurality of i
A spar cap for a rotor blade of a wind turbine may generally include an assembly of pre-cured laminate plates stacked on one top of the other, with the assembly including an outermost pre-cured plate, an innermost pre-cured plate positioned opposite the outermost pre-cured plate and a plurality of intermediate pre-cured plates stacked directly between the outermost and innermost pre-cured plates. The outermost pre-cured plate may be configured to be positioned adjacent to an inner surface of a body shell of the rotor blade. In addition, the outermost pre-cured plate may define a plate thickness that differs from a plate thickness defined by the innermost pre-cured plate by at least 50%.
대표청구항▼
1. A spar cap for a rotor blade of a wind turbine, the rotor blade including a blade root, a blade tip and a body shell extending between the blade root and the blade tip, the spar cap comprising: an assembly of pre-cured laminate plates stacked one on top of the other, the assembly of pre-cured lam
1. A spar cap for a rotor blade of a wind turbine, the rotor blade including a blade root, a blade tip and a body shell extending between the blade root and the blade tip, the spar cap comprising: an assembly of pre-cured laminate plates stacked one on top of the other, the assembly of pre-cured laminate plates including an outermost pre-cured plate, an innermost pre-cured plate positioned opposite the outermost pre-cured plate and a plurality of intermediate pre-cured plates stacked directly between the outermost and innermost pre-cured plates, the outermost pre-cured plate configured to be positioned adjacent to an inner surface of the body shell,wherein the outermost pre-cured plate defines a plate thickness that differs from a plate thickness defined by the innermost pre-cured plate by at least 50%, andwherein the plurality of intermediate pre-cured plates are arranged such that a plate thickness of the plurality of intermediate pre-cured plates continuously decreases or continuously increases between adjacent pre-cured plates of the plurality of intermediate pre-cured plates as the spar cap extends between the outermost pre-cured plate and the innermost pre-cured plate. 2. The spar cap of claim 1, wherein the plate thickness of the outermost pre-cured plate corresponds to a maximum plate thickness for the spar cap and the plate thickness of the innermost pre-cured plate corresponds to a minimum plate thickness for the spar cap. 3. The spar cap of claim 1, wherein the plate thickness of the outermost pre-cured plate corresponds to a minimum plate thickness for the spar cap and the plate thickness of the innermost pre-cured plate corresponds to a maximum plate thickness for the spar cap. 4. The spar cap of claim 1, wherein each of the plurality of pre-cured laminate plates corresponds to a pultruded plate. 5. A spar cap for a rotor blade of a wind turbine, the rotor blade including a blade root, a blade tip and a body shell extending between the blade root and the blade tip, the spar cap comprising: an assembly of pre-cured laminate plates stacked one on top of the other, the assembly of pre-cured laminate plates including an outermost pre-cured plate, an innermost pre-cured plate positioned opposite the outermost pre-cured plate and a plurality of intermediate pre-cured plates stacked directly between the outermost and innermost pre-cured plates, the outermost pre-cured plate configured to be positioned adjacent to an inner surface of the body shell,wherein the outermost pre-cured plate defines a plate thickness corresponding to one of a maximum plate thickness or a minimum plate thickness for the spar cap and the innermost pre-cured plate defines a plate thickness corresponding to the other of the maximum plate thickness or the minimum plate thickness for the spar cap, andwherein the plurality of intermediate pre-cured plates are arranged such that a plate thickness of the plurality of intermediate pre-cured plates continuously decreases or continuously increases between adjacent pre-cured plates of the plurality of intermediate pre-cured plates as the spar cap extends between the outermost pre-cured plate and the innermost pre-cured plate. 6. The spar cap of claim 5, wherein the plate thickness of the outermost pre-cured plate corresponds to the maximum plate thickness and the plate thickness of the innermost pre-cured plate corresponds to the minimum plate thickness. 7. The spar cap of claim 6, wherein the plate thickness of the plurality of intermediate pre-cured plates is continuously decreased as the spar cap extends between the outermost pre-cured plate and the innermost pre-cured plate. 8. The spar cap of claim 5, wherein the plate thickness of the outermost pre-cured plate corresponds to the minimum plate thickness and the plate thickness of the innermost pre-cured plate corresponds to the maximum plate thickness. 9. The spar cap of claim 8, wherein the plate thickness of the plurality of intermediate pre-cured plates is continuously increased as the spar cap extends between the outermost pre-cured plate and the innermost pre-cured plate. 10. The spar cap of claim 5, wherein the minimum plate thickness is equal to less than about 50% of the maximum plate thickness. 11. The spar cap of claim 10, wherein the minimum plate thickness is equal to less than about 20% of the maximum plate thickness. 12. The spar cap of claim 5, wherein each of the plurality of pre-cured laminate plates corresponds to a pultruded plate. 13. A spar cap for a rotor blade of a wind turbine, the rotor blade including a blade root, a blade tip and a body shell extending between the blade root and the blade tip, the spar cap comprising: an assembly of pre-cured laminate plates, the assembly of pre-cured laminate plates including a plurality of first pre-cured laminate plates stacked one on top of the other along an inboard region of the spar cap and a plurality of second pre-cured laminate plates stacked one on top of the other along an outboard region of the spar cap,wherein the plurality of first and second pre-cured laminate plates are inter-leafed such that an overlapped region is defined between each second pre-cured laminate plate and each pair of adjacent first pre-cured laminate plates along a spanwise direction of the spar cap, andwherein, at least in the overlapped region, a plate thickness of the plurality of first pre-cured laminate plates is greater than a plate thickness of the plurality of second pre-cured laminate plates. 14. The spar cap of claim 13, wherein the spar cap transitions from the inboard region to the outboard region at a spanwise location ranging from about 40% to about 60% of a span of the rotor blade. 15. The spar cap of claim 13, wherein at least one of the plurality of first pre-cured laminate plates define a plate thickness corresponding to a maximum plate thickness for the spar cap and wherein at least one of the plurality of second pre-cured laminate plates define a plate thickness corresponding to a minimum plate thickness for the spar cap.
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