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Multi-girder structure large size wind power blade and production method thereof

A technology for wind power blades and manufacturing methods, applied to wind power generation, wind power generator components, and wind power generators at right angles to the wind direction, etc., can solve the problems of structural safety and high cost, achieve strength safety, increase blade frequency, and reduce blade quality Effect

Active Publication Date: 2016-04-20
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method that can effectively reduce the weight of the blade in view of the structural safety and high cost of the existing large-size and elongated blades, so as to increase the frequency of the blade and reduce the load on the blade. Large-size, elongated wind power blade capable of reducing production cost and manufacturing method thereof

Method used

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  • Multi-girder structure large size wind power blade and production method thereof
  • Multi-girder structure large size wind power blade and production method thereof
  • Multi-girder structure large size wind power blade and production method thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments of the description.

[0031] figure 1 It is a schematic cross-sectional view of the structure of the blade shell in this embodiment, figure 2 , image 3 It is a schematic diagram of the distribution of the blade shell structure along the span direction.

[0032] It can be seen from the accompanying drawings that the present invention provides a large-size wind power blade with multi-beam structure, which adopts a hollow layout structure, including blade skin suction side (11), blade skin pressure side (12), main load-bearing structure girder (1, 2, 4, 5), shear web (7, 8), trailing edge load-bearing structural trabecular (3, 6). The main load-bearing structure girders (1, 2, 4, 5) are divided into four blade structure girders. The width of the blade structure girders in this implementation is 0.31m, and the total length of the girders is 52.51m. °The ...

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Abstract

The invention discloses a multi-girder structure large size wind power blade and a production method thereof. The multi-girder structure large size wind power blade is in a hollow layout structure, and comprises a blade envelope suction edge, a blade envelope pressure edge, main load-carrying construction girders and shearing-resistant web plates, wherein the blade envelope suction edge and the blade envelope pressure edge are combined to form a cavity structure of which the cross section is streamlined; a supporting structure formed by the main load-carrying construction girders and the shearing-resistant web plates is arranged in the cavity structure formed by the blade envelope suction edge and the blade envelope pressure edge; and the blade envelope suction edge and blade envelope pressure edge are in multisection combination structures, and are connected with the side surfaces of the main load-carrying construction girders through a plurality of edge sections respectively to form a blade envelope suction edge and blade envelope pressure edge integrated body. On the premise of ensuring the rigidity and strength of the blade, the resistance to buckling instability of the blade is improved; and by adopting a high-module carbon fiber spread layer, the weight of the blade can be reduced obviously, and loads, particularly a fatigue load, of the blade are reduced.

Description

technical field [0001] The present invention relates to a component of wind power generation equipment and an improvement of its manufacturing method, in particular to a manufacturing method of a large-sized and elongated wind power blade and the improvement of the wind power blade. It belongs to the technical field of wind power equipment. Background technique [0002] As we all know, wind power blades are developing towards large size. Even when the power generation remains unchanged, the size of the blades is constantly increasing and lengthening. As the size of the blade changes, the blade becomes more slender and softer. In order to meet the requirements of rigidity, strength and stability, it is necessary to increase the structural layup, especially the layup near the tip of the blade. This will inevitably lead to an increase in the weight of the blade, and the center of mass is closer to the blade. At the same time, as the weight increases, the fatigue load will also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00B29C70/36
CPCY02E10/74F05B2230/50F05B2240/30F05B2250/70F05B2280/6003Y02E10/72Y02P70/50F03D1/0675F05B2240/302B29D99/0028B29L2031/085B29C70/443F03D1/06F03D3/06B29C70/22B29K2063/00B29K2105/0809B29K2307/04
Inventor 冯学斌彭超义曾竟成邓航杨孚标张子谦
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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