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Large-scale composite wind blade forming process

A wind power blade and molding process technology, applied in the field of resin film infiltration molding process for large-scale composite wind power blades, can solve the problems of high scrap rate, unstable blade quality, discount of blade performance, etc., to reduce scrap rate, improve service life and Safety and reliability, the effect of reducing the manufacturing cycle

Inactive Publication Date: 2012-12-19
INNER MONGOLIA JINGANG HEAVY IND
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of white spots greatly reduces the performance of the blades, resulting in unstable blade quality and high scrap rate

Method used

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  • Large-scale composite wind blade forming process
  • Large-scale composite wind blade forming process

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] In this example, a 1.5MW composite material wind power blade is prepared, and the manufacture of the blade includes the manufacture of a web, a spar cap, and two half-shells, and then bonding these parts together. These parts are prepared by resin film infiltration molding process. The raw materials are fiberglass fabric, epoxy resin membrane, balsa wood and PVC foam.

[0029] The following is a detailed description of the resin film infiltration molding process through the molding process of the blade half-shell. The molding process includes the following steps. The schematic diagram of the process struct...

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Abstract

The invention discloses a large-scale composite wind blade resin film infusion forming process which comprises the following steps: 1) preparing a mould; 2) laying a resin film; 3) laying a reinforcement material; 4) laying accessaries; 5) sealing a vacuum bag; 6) vacuumizing and heating; and 7) solidifying, demoulding and trimming. The forming process solves the problems of bubbles and white spots in the glue injection process so as to greatly reduce rejection ratio; and the wind blades manufactured are even in quality distribution and good in quality stability and process repeatability, and the service life and safe reliability of the blade are improved greatly. In addition, the forming process avoids a glue injection system and a glue mixer, so that the investment cost is reduced and the manufacturing cycle is shortened.

Description

technical field [0001] The invention relates to a wind power blade forming process, in particular to a large-scale composite material wind power blade resin film infiltration forming process. Background technique [0002] At present, the mainstream production process of large-scale wind power blades is the vacuum infusion process. The main principle is to build a vacuum system after the fiber cloth is completely laid, and infuse resin when a certain vacuum negative pressure is drawn. The resin enters the system quickly under the action of atmospheric pressure to complete the infusion of the blade. In the design of the infusion process, the number of the injection port of the infusion system and the suction port of the vacuum system is limited. At the same time, there will be tiny air bubbles entering the vacuum system with the resin during the mixing of the resin. In order to remove these impurities and ensure the quality of the infusion, the infusion The positions of the i...

Claims

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Application Information

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IPC IPC(8): B29C70/34
Inventor 严科飞任伟华
Owner INNER MONGOLIA JINGANG HEAVY IND
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