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Laying method of the main beam of the wind power blade and its core material and plate

A laying method and technology of wind power blades, which are applied in wind power generation, mechanical equipment, wind turbines, etc., can solve the problems of reducing the rigidity and strength of the plate structure, and achieve the effect of speeding up the manufacturing speed, improving the perfusion efficiency and effect, and facilitating the operation of workers.

Active Publication Date: 2020-11-03
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cross-section of the plates used for the main beam or auxiliary beam structure of the blades is generally rectangular. If the rectangular plates are stacked, if the joints are formed, the structural rigidity and strength of the plates will be reduced.

Method used

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  • Laying method of the main beam of the wind power blade and its core material and plate
  • Laying method of the main beam of the wind power blade and its core material and plate
  • Laying method of the main beam of the wind power blade and its core material and plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Using a section such as figure 1 The shown parallelogram plate 1 is used to make the main girder of the wind power blade, which is laid using the first laying method of the present invention. The main girder of the wind turbine blade is obtained by stacking a plurality of parallelogram plates 1 to form a multi-layer structure, and then pouring resin with the core material. The structure formed after the parallelogram plates 1 are stacked is as follows: figure 2 As shown, the stacked parallelogram sheet 1 will form an inwardly concave edge ( figure 2 edge of the sheet structure 11).

[0059] see image 3 Firstly, the first core material 3 is positioned and laid in the blade shell, and then the parallelogram plates 1 on both sides of the first core material 3 are laid. When the parallelogram plate 1 is stacked, it is close to the slope of the first core material 3 . When laying the parallelogram plate 1 on both sides of the first core material 3, the number of laye...

Embodiment 2

[0062] The main girder of the wind power blade is made of the trapezoidal plate 2, and the laying method 1 of the present invention is still used for laying. The main girder of wind turbine blades is made by pouring resin after laying multiple plates and core materials in corresponding molds. The structural form of the trapezoidal plate 2 is as follows Figure 8 shown. The structure formed after the trapezoidal plates 2 are stacked is as follows Figure 9 As shown, when the trapezoidal plates 2 are stacked, one of the two adjacent trapezoidal plates 2 is placed in reverse, and the contacting sides of the adjacent trapezoidal plates 2 are combined in a mosaic form and superimposed layer by layer. After the trapezoidal plates 2 are stacked, an inwardly concave edge will be formed ( Figure 9 edge of the sheet structure 21).

[0063] The main girder stacking form of embodiment 2 is as follows Figure 10 As shown, the first core material 3 is first positioned and laid in the ...

Embodiment 3

[0067] The laying method 1 is used for laying, and the implementation steps of integral pouring of the main beam and the shell are as follows:

[0068] 1. Determine the size of the trapezoidal first core section in the middle of the plate according to the blade design, including the length of the upper and lower sides, thickness and angle;

[0069] 2. Determine the location of the centerline of the main beam in the blade shell according to the blade design;

[0070] 3. According to the positioning of the center line of the main beam in the shell, lay the first core material in the shell so that the center of the first core material is aligned with the center line of the main beam;

[0071] 4. Lay the main beam plate on both sides of the first core material. When laying the plate, the number of layers of the plate on both sides of the first core material should be consistent, that is, lay the first layer of plate on one side of the first core material first, and then lay the ot...

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Abstract

The invention discloses a main beam of a wind power blade, and a laying method of a core material and plates of the main beam of the wind power blade. The main beam comprises the first core material and the plates. The laying method includes the following steps that (1) the first core material is laid, at least one side of the first core material is provided with an oblique surface, and an acute angle is formed between the oblique surface and the bottom surface of the first core material; and (2) the plates are laid layer by layer on the side of the oblique surface, the plates are provided with first side surfaces which are oblique, and the first side surfaces of the plates are fit with the oblique surface. Firstly, the core material is positioned and laid, then the plates are fit with theedge of the core material to be laid layer by layer , thus the effect that the plates are fully tightly fit with the edge of the core material can be guaranteed, and mismatching of the plates is avoided. The problem that seams are formed during stacking of the plates, and consequently the structural rigidity and strength of the plates are lowered is avoided, meanwhile the problem of defects and risks that rich resin exists at the interface of the plates and the core material, and mismatching of the plates of the main beam occurs is solved, the method is easy to implement, operation is convenient for workers, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing wind power blades, in particular to a method for laying a main beam of a wind power blade and its core material and board. Background technique [0002] As one of the most important sectors of new energy, wind energy has achieved great development in countries all over the world. The combination of wind turbines with large diameter rotors has become a technical trend in the field of wind power. As the length of the blade increases and the power of the fan unit increases, the drive design of the blade gradually shifts from strength drive to stiffness drive. Therefore, materials with lower unit modulus cost become the first choice for blade structure design. [0003] Fan blades are mainly composed of girders, webs, and shells. Usually, the girders and webs are prefabricated during the production process, and then the shell is made. During the shell manufacturing process, the girders are put in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/00
CPCF03D80/00Y02E10/72Y02P70/50
Inventor 张振国王国军文欢赵大文李海涛
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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