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Blade manufacturing method and blade

A manufacturing method and technology of blades, which are applied in the manufacture of blades and in the field of blades, and can solve problems such as scrapped blades, cavities in bolt sleeves, and excessive thickness of fiber cloth layers

Active Publication Date: 2020-04-21
JIANGSU GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for perforated blades, because the fiber cloth layer at the root of the blade is too thick, it increases the difficulty of perfusing the resin, resulting in impervious resin at the root of the blade.
In addition, for the pre-embedded bolt sleeve type blade, at the root of the blade, since the bolt sleeve is pre-embedded in the fiber cloth and the thickness of the fiber cloth at the blade root is large, it increases the difficulty of pouring resin, resulting in the occurrence of cracks around the bolt sleeve. The cavity of the bolt sleeve and the impermeability of resin filling lead to the scrapping of the blade

Method used

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  • Blade manufacturing method and blade
  • Blade manufacturing method and blade
  • Blade manufacturing method and blade

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Embodiment Construction

[0027] Hereinafter, the manufacturing method of the blade of the present invention will be described by taking the embedded bolt sleeve type blade as an example.

[0028] like Figure 1 to Figure 7 As shown, according to the embodiment of the present invention, the manufacturing method of the blade may include: laying fiber cloth on the blade mold 10; arranging a vacuum infusion system on the fiber cloth, the vacuum infusion system includes a main suction pipe (not shown) and an auxiliary Air extraction pipe 100, wherein, the auxiliary air extraction pipe 100 is arranged at the root of the blade, and the auxiliary air extraction pipe 100 can extract air along the direction D1 from the blade tip towards the blade root (S20); S30); pouring the resin and curing the resin (S40).

[0029] figure 2 It is a schematic view viewed from the tip of the blade mold 10 toward the root of the blade when manufacturing the blade, image 3 is a plan view of the blade mold 10 seen from the t...

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Abstract

The invention provides a manufacturing method of a blade and the blade. The manufacturing method comprises the following steps that fiber cloth is laid on a blade mould; a vacuum perfusion system is arranged on the fiber cloth, the vacuum perfusion system comprises a main air extraction pipe and an auxiliary air extraction pipe, wherein the auxiliary air extraction pipe is arranged at a blade root, and the auxiliary air extraction pipe can conduct air extraction in the direction from a blade tip towards the blade root; air extraction is conducted through the main air extraction pipe and the auxiliary air extraction pipe; and resin is perfused and solidified. According to the manufacturing method of the blade, through air extraction in the direction from the blade tip towards the blade root, the resin flowing out from the interior of a glue injection pipeline can permeate in the fiber cloth laid at the blade root though negative pressure more easily, and the problems of cavities of boltsleeves and impermeable perfusion of the resin are solved accordingly.

Description

technical field [0001] The present invention relates to the technical field of wind power generators, and more specifically, the invention relates to a method for manufacturing blades used in wind power generators and the blades manufactured by the method. Background technique [0002] According to different types of blade roots, the existing blades are mainly divided into perforated blades and embedded bolt sleeve blades. The perforated blade is to use a punching machine to drill holes in the root of the blade to install T-nuts after the blade is formed. The pre-embedded bolt sleeve type blade is to pre-set the bolt sleeve in the fiber cloth of the blade root during the process of laying fiber cloth. , and then infuse the resin to solidify the fiber cloth and the bolt sleeve together. [0003] In the existing vacuum infusion system, negative pressure is formed by vacuuming, and the resin penetrates into the fiber cloth due to the negative pressure. However, for perforated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/36B29L31/08
CPCB29C70/36B29L2031/085
Inventor 李正浛保积佑张小平
Owner JIANGSU GOLDWIND SCI & TECH CO LTD
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