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Method for molding composite material wind power blade root

A technology of wind turbine blades and composite materials, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of composite materials without related patents and reports, and achieve the effects of shortening the production cycle, improving the overall cost performance, and shortening the occupation time

Active Publication Date: 2012-06-27
LUOYANG SUNRUI WIND TURBINE BLADE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are currently no relevant patents or reports on the prefabrication of composite material roots

Method used

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  • Method for molding composite material wind power blade root
  • Method for molding composite material wind power blade root
  • Method for molding composite material wind power blade root

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Application example of root forming of large composite wind power blade with a length of 50m and a width of 5m.

[0029] The root of the blade has a total of 120 layers, and 70 layers are prefabricated with small molds. The process description is as follows:

[0030] 1. Make a small mold at the root (0-3.6m);

[0031] 2. Lay the 40th to 110th layer of blades in a small mold;

[0032] 3. Lay auxiliary materials on the upper layer of the small mold layer;

[0033] 4. Establish a vacuum sealing system on the small mold;

[0034] 5. Vacuum infusion molding and heat curing of 70 layers of small molds;

[0035] 6. Demoulding and saving the 70-layer prefabricated body of the small mold;

[0036] 7. Carry out the 1st to 39th layers of fiber laying in the molds of the lower shell and the upper shell of the blade;

[0037] 8. Put the demolded prefabricated body into the shell mold;

[0038] 9. Continue to lay the 111th to 120th layers in the shell mold;

[0039] 10. The l...

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Abstract

The invention discloses a method for molding a composite material wind power blade root. The method is characterized by comprising the following steps of: making independent wind power blade root small molds for the blade root, laying a bottom fiber dry course of the wind power blade root by means of the larger small mold, and laying a middle fiber dry course of the wind power blade root by means of the smaller mold; constructing vacuum systems in the small molds to form prefabricated products; putting the he prefabricated products into a wind power blade molding die sequentially; continuously laying an upper layer glass fiber dry course; and integrally pouring the upper layer glass fiber dry course and the prefabricated products by vacuum pouring molding, and thus obtaining a final wind power blade product. According to the novel method for molding the composite material wind power blade root, the rejection rate of blade products is reduced, the die holding time is shortened, the production cycle is shortened, and the product quality is improved, so that the overall cost performance of the blade products is improved.

Description

technical field [0001] The invention relates to a technology in the field of composite material forming technology, in particular to a composite material wind power blade root forming method. Background technique [0002] Wind turbine blades are mainly made of fiber-reinforced resin-based composite materials. The structure of wind turbine blades is mainly divided into lower shell, upper shell, girder, and web. The length of the blade can be divided into two parts: root and tip. The part connected to the rotor can be called the blade root and the part away from the root can be called the blade tip. Depending on the design of the blade, the length of the blade within 15m can also be called the root. The manufacturing process of wind power blades is: the lower shell, upper shell, girder, and web of the blade are respectively vacuum infused in independent moulds; the principle of vacuum infusion molding process is: laying dry fiber layers in the mould, Resin flow medium is l...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29L31/08
Inventor 黎华林明姜志超王满昌
Owner LUOYANG SUNRUI WIND TURBINE BLADE
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