IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0523103
(2003-08-04)
|
등록번호 |
US-7334989
(2008-02-26)
|
우선권정보 |
DE-102 35 496(2002-08-02) |
국제출원번호 |
PCT/EP03/008618
(2003-08-04)
|
§371/§102 date |
20050822
(20050822)
|
국제공개번호 |
WO04/015265
(2004-02-19)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Blakely, Sokoloff, Taylor & Zafman LLP
|
인용정보 |
피인용 횟수 :
31 인용 특허 :
3 |
초록
▼
The invention relates to a process for producing a rotor blade for a wind power system, wherein at least two rotor blade elements are arranged one behind the other in a longitudinal direction of the rotor blade and are glued together via at least one, preferably at least two connecting elements brid
The invention relates to a process for producing a rotor blade for a wind power system, wherein at least two rotor blade elements are arranged one behind the other in a longitudinal direction of the rotor blade and are glued together via at least one, preferably at least two connecting elements bridging a partition line between the rotor blade elements, wherein at least one connecting element is aligned with said rotor blade elements, wherein a hollow space is formed between an outer delimitation surface of at least one of the rotor blade elements and at least one fixing segment of the inner delimitation surface of said connecting element, and subsequently the hollow space is flooded with an adhesive (resin).
대표청구항
▼
The invention claimed is: 1. A process for producing a rotor blade for a wind power system, wherein at least two rotor blade elements are arranged one behind the other in a longitudinal direction of the rotor blade and are glued together via at least one connecting elements bridging a partition lin
The invention claimed is: 1. A process for producing a rotor blade for a wind power system, wherein at least two rotor blade elements are arranged one behind the other in a longitudinal direction of the rotor blade and are glued together via at least one connecting elements bridging a partition line between the rotor blade elements, wherein at least one connecting element is aligned with said rotor blade elements, wherein a hollow space is formed between an outer delimitation surface of at least one of the rotor blade elements and at least one fixing segment of the inner delimitation surface of said connecting element, and subsequently the hollow space is flooded with an adhesive. 2. The process according to claim 1, wherein the alignment of the connecting element is locked before flooding the hollow space by gluing a locking rim of the inner delimitation surface of the connecting element, at least partially surrounding the fixing segment, to an outer delimitation surface of at least one of the rotor blade elements. 3. The process according to claim 2, wherein said hollow space is sealed tightly at least in the region of the locking rim. 4. The process according to claim 2 or claim 3, wherein the connecting element is glued to at least one of the rotor blade elements in the region of the locking rim with a thickened epoxy resin and/or polyester resin. 5. The process according to claim 1, wherein, for flooding, a negative pressure is generated in the hollow space or the adhesive is pumped into the hollow space with overpressure. 6. The process according to claim 5, wherein the supply of adhesive is effected at the deepest location of the hollow space as seen from the outer delimitation surface of the rotor blade or the negative pressure is generated at the location which is located highest. 7. The process according to claim 1, wherein the adhesive has a dynamic viscosity η in the range of about 130-230 Mpas, and a kinematic viscosity η/ρ in the range of about 1.2-2��105 m2/s. 8. The process according to claim 1, wherein the adhesive is either a liquid epoxy resin or polyester resin. 9. The process according to claim 1, wherein after flooding, the adhesive hardens at room temperature or for a period of time of approximately 6 to 10 hours at a temperature of about 70�� C. 10. The process according to claim 1, wherein said rotor blade elements are produced in the same mold, in which, at the desired place of separation, a forming part, and, if necessary, for the formation of the hollow space, a separating film is inserted. 11. The process according to claim 10, wherein at least one connecting element is produced in the same mold as the rotor blade elements. 12. The process according to claim 1, wherein the adhesive is resin. 13. The process according to claim 1, wherein the adhesive has a dynamic viscosity η in the range of about 150-210 Mpas, and a kinematic viscosity η/ρ in the range of about 1.4-1.8��105 m2/s. 14. The process according to claim 1, wherein the adhesive has a dynamic viscosity η in the range of about 170-190 Mpas, and a kinematic viscosity η/ρ in the range of about 1.6-1.8��105 m2/s. 15. The process according to claim 1, wherein the adhesive has a dynamic viscosity η of about 180. 16. A rotor blade for a rotor of a wind power system having at least two rotor blade elements arranged one behind the other in a longitudinal direction of the rotor blade and being glued together, comprising at least one connecting elements bridging a partition line between the rotor blade elements and having at least two adherend segments, wherein each of them is glued together with one of the rotor blade elements over a large surface. 17. The rotor blade according to claim 16, wherein said at least one connecting element is at least partially accommodated in a recess formed by the outer delimitation surfaces of the rotor blade elements in the region of the separation line. 18. The rotor blade according to claim 17, wherein said recess at least partially surrounds the longitudinal axis of the rotor blade. 19. The rotor blade according to claim 17 or claim 18, wherein the outer circumference of at least one rotor blade element tapers towards the separation line in a wedge-shaped manner in a cutting plane extending perpendicularly to the longitudinal axis for forming the recess. 20. The rotor blade according to claim 19, wherein said connecting element has an inner delimitation surface extending in a complementary manner to the profile of the recess. 21. The rotor blade according to claim 20, wherein the connecting element has an outer surface which is flush with the adjacent regions of the outer surfaces of the rotor blade elements. 22. The rotor blade according to claim 21, wherein at least one connecting element has a construction corresponding to the construction of adjacent regions of the rotor blade elements. 23. The rotor blade according to claim 22, wherein the construction of the at least one connecting elements is a laminate-shaped construction. 24. The rotor blade according to claim 16, wherein at least one rotor blade element is constructed as a hollow body with a shell accommodating at least one bar absorbing bending forces. 25. A wind power system, comprising a rotor having at least one rotor blade and being pivoted about a rotor axis extending approximately horizontally, wherein the rotor blade comprises at least two rotor blade elements arranged one behind the other in a longitudinal direction of the rotor blade and being glued together, comprising at least one connecting elements bridging a partition line between the rotor blade elements and having at least two adherend segments, wherein each of them is glued together with one of the rotor blade elements over a large surface. 26. A rotor blade element for the rotor of a wind power system, wherein the rotor blade element is connectable with at least one further rotor blade element to form a rotor blade, wherein the rotor blade element and the at least one further rotor blade element are arranged one behind the other in a longitudinal direction of the rotor blade, and the rotor blade element has a recess at the end connectable with the further rotor blade element which is part of a space filled with adhesive in the connected state. 27. The rotor blade element of claim 26, further comprising: a shell; and a diminution of the shell facing a separation line; wherein the diminution is designed to form a hollow space with a connecting element necessary for assembly of the rotor blade. 28. The rotor blade element according to claim 27, wherein the rotor blade element is a prefabricated longitudinal module. 29. The rotor blade element according to claim 28, wherein the shell of the rotor blade element is one piece. 30. The rotor blade element according to claim 29, wherein the rotor blade element is at least four meters long. 31. A connecting element for bridging a separation line between rotor blade elements for a rotor blade of a wind power system, comprising: at least two fixing segments, wherein the at least two fixing segments taper towards the surface of the connecting element in a wedge-shaped manner beginning from the separation line between the rotor blade elements; and locking segments surrounding said fixing segments, wherein the connecting element has diminutions directed outwardly in the direction of the longitudinal axis of the rotor blade elements to be connected, and wherein the diminutions are formed in such a way that the connecting element forms a hollow space with the rotor blade elements to be connected.
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