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BR-102023016405-B1 - Blade beam structure, wind turbine blade and wind energy equipment

BR102023016405B1BR 102023016405 B1BR102023016405 B1BR 102023016405B1BR-102023016405-B1

Abstract

A blade beam structure, a wind turbine blade, and wind turbine equipment are disclosed. The blade beam structure includes: a plurality of pultruded sheets overlapping in a height direction, an installation slot is provided between any two adjacent pultruded sheets, and the installation slot is used to fill a solidified material; and a limiting structure is provided between any two adjacent pultruded sheets. The limiting structure includes a first sub-limiting structure and a second sub-limiting structure, the first sub-limiting structure is provided in one of the two adjacent pultruded sheets, the second sub-limiting structure is provided in another of the two adjacent pultruded sheets, and the second sub-limiting structure is adapted to the first sub-limiting structure and is fixed to the first sub-limiting structure individually.

Inventors

  • HE JIAHAO
  • Hu Jie

Assignees

  • SANY RENEWABLE ENERGY CO., LTD

Dates

Publication Date
20260317
Application Date
20230815
Priority Date
20230103

Claims (8)

  1. 1. Blade beam structure, characterized by comprising: a plurality of pultruded sheets (11) superimposed in a height direction; wherein an installation slot (12) is provided between any two adjacent pultruded sheets (11), and the installation slot (12) is configured to fill a solidified material; wherein a limiting structure (13) is provided between any two adjacent pultruded sheets (11), the limiting structure (13) comprising a first sub-limiting structure (131) and a second sub-limiting structure (132), the first sub-limiting structure (131) being provided in one of the two adjacent pultruded sheets (11), the second sub-limiting structure (132) being provided in the other of the two pultruded sheets (11), and the second sub-limiting structure (132) being adapted to the first sub-limiting structure (131) and being fixed with the first sub-limiting structure. (131) individually; the first sub-limiting structure (131) comprises a fitting structure; the second sub-limiting structure (132) includes a protruding structure; and the protruding structure is extended into the fitting structure and is fixed with the fitting structure; and a size of the fitting structure is larger than a size of the protruding structure in a width direction of the pultruded sheet (11), and a size difference is in the range between 1mm and 2mm, so that the installation space (12) between two pultruded sheets (11) is transverse in the width direction and passes through a coupling surface of the protruding structure and the fitting structure.
  2. 2. Paddle beam structure, according to claim 1, characterized in that a guide fabric (14) is provided in the installation slot (12) between any two adjacent pultruded sheets (11), and the guide fabric (14) is configured to guide the solidified material.
  3. 3. Paddle beam structure, according to claim 1, characterized in that the first sub-limiting structure (131) and the second sub-limiting structure (132) are integrally formed with the corresponding pultruded sheet (11).
  4. 4. Paddle beam structure, according to any one of claims 1 to 3, characterized in that the plurality of pultruded sheets (11) comprises a first pultruded sheet (111) and a second pultruded sheet (112) over the first pultruded sheet (111).
  5. 5. Blade beam structure, according to any one of claims 1 to 3, characterized in that the plurality of pultruded sheets (11) comprises a first pultruded sheet (111), a second pultruded sheet (112) and at least one intermediate pultruded sheet (113), the second pultruded sheet (112) lies on top of the first pultruded sheet (111), and the intermediate pultruded sheet (113) lies between the first pultruded sheet (111) and the second pultruded sheet (112).
  6. 6. Blade beam structure according to claim 5, characterized in that the intermediate pultruded sheet (113) comprises: a third pultruded sheet (1131), wherein the first sub-limiting structure (131) is provided on a lower surface of the third pultruded sheet (1131), and the second sub-limiting structure (132) is provided on an upper surface of the third pultruded sheet (1131); and/or a fourth pultruded sheet (1132), wherein the second sub-limiting structure (132) is provided on a lower surface of the fourth pultruded sheet (1132), and the first sub-limiting structure (131) is provided on an upper surface of the fourth pultruded sheet (1132); and/or a fifth pultruded sheet (1133), wherein the first sub-limiting structure (131) is provided on an upper surface and a lower surface of the fifth pultruded sheet (1133); and/or a sixth pultruded sheet (1134), wherein the second sub-limiting structure (132) is provided on an upper surface and a lower surface of the sixth pultruded sheet (1134).
  7. 7. Wind turbine blade characterized by comprising: a blade body; and a blade beam structure according to any one of claims 1 to 6, wherein the blade beam structure is arranged in the blade body.
  8. 8. Wind power equipment characterized by comprising the wind power blade according to claim 7.

Description

STATE OF THE ART [0001] This application relates to the state of the art of wind power equipment and, in particular, to a blade beam structure, a wind power blade and wind power equipment. CONTEXT [0002] Currently, with the development of wind energy technology and the trend towards large-scale blades, pultruded sheets with higher specific modules are widely used in wind energy equipment blades. Typically, pultruded sheets are used to form a beam structure, such as the main beam of the blade. Several pultruded sheets are overlapped and assembled vertically to form the main beam of the blade, and resin is poured and solidified. Since pultruded sheets are prone to chord misalignment during the transfer process—that is, the pultruded sheet is displaced along the width of the main beam, and its relative position to other pultruded sheets is misaligned, resulting in a change in the size of the gap at both ends of the displaced pultruded sheet—the problem of excess resin at the edge of the beam is likely to occur after the resin is poured, which will affect the mechanical properties of the blade. SUMMARY [0003] In view of this, to solve at least one of the aforementioned problems existing in the related art, this application provides a blade beam structure, a wind turbine blade and a wind turbine equipment. [0004] This application provides a paddle beam structure, including: a plurality of pultruded sheets overlapping in a height direction, [0005] an installation slot is provided between any two adjacent pultruded sheets, and is used to fill a solidified material; and [0006] a limiting structure is provided between any two adjacent pultruded sheets, and includes a first sub-limiting structure and a second sub-limiting structure, the first sub-limiting structure is provided in one of the two adjacent pultruded sheets, the second sub-limiting structure is provided in the other of the two pultruded sheets, and the second sub-limiting structure is adapted to the first sub-limiting structure and is fixed with the first sub-limiting structure individually. [0007] Through the refinement and optimization of the structure, a limiting structure is provided between adjacent pultruded sheets. The first sub-limiting structure is fixed to the second sub-limiting structure to limit the pultruded sheet in the width direction, preventing the pultruded sheet from shifting. This can effectively prevent chord misalignment caused by the deviation of the pultruded sheet after the blade beam structure is assembled onto the blade body, in order to prevent the beam edge from becoming resin-rich after the resin is poured. The first sub-limiting structure and the second sub-limiting structure of the limiting structure are adapted to each other, and the first sub-limiting structure is fixed to the second sub-limiting structure without additional auxiliary structures or multiple limiting structures. The assembly of the structure is simple and easy, which can be applied to a blade beam structure composed of at least two pultruded sheets, and has strong applicability. Furthermore, since the paddle beam structure can limit the misalignment of the pultruded sheet string, the forming efficiency of the paddle beam structure is improved, which is beneficial for reducing quality inspection time, and can also reduce or even eliminate investment in molding tools for cost reduction. [0008] In one embodiment, the first sub-limiting structure includes a docking structure, the second sub-limiting structure includes a protruding structure, and the protruding structure is extended into the docking structure and is fixed with the docking structure. [0009] In one embodiment, a size of the interlocking structure is larger than a size of the protruding structure in a width direction of the pultruded sheet, and a size difference is in the range of 1 mm to 2 mm. [0010] In one embodiment, a guide fabric is provided in the installation gap between any two adjacent pultruded sheets, and the guide fabric is configured to guide the solidified material. [0011] In one embodiment, the first sub-limiting structure and the second sub-limiting structure are integrally formed with the corresponding pultruded sheet. [0012] In one embodiment, the plurality of pultruded sheets includes a first pultruded sheet and a second pultruded sheet over the first pultruded sheet. [0013] In one embodiment, the plurality of pultruded sheets includes a first pultruded sheet, a second pultruded sheet and at least one intermediate pultruded sheet, the second pultruded sheet is placed on top of the first pultruded sheet, and the intermediate pultruded sheet is placed between the first pultruded sheet and the second pultruded sheet. [0014] In one embodiment, the intermediate pultruded sheet includes: [0015] a third pultruded sheet, the first sub-limiting structure is provided on a lower surface of the third pultruded sheet, and the second sub-limiting structure is provided on an upper surface of