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Method for eliminating blade girder bottom bubbles

A technology for blades and main girders, which is applied in the field of eliminating air bubbles at the bottom of the main girders of wind power blades, can solve problems affecting the quality of blades, etc., and achieve the effects of improving production efficiency, improving operating efficiency, and reducing production costs

Inactive Publication Date: 2020-02-14
BAIYIN SINO WIND ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the blade forming process, dense air bubbles are easily formed between the prefabricated main beam and the outer skin of the shell, which seriously affects the quality of the blade

Method used

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  • Method for eliminating blade girder bottom bubbles
  • Method for eliminating blade girder bottom bubbles
  • Method for eliminating blade girder bottom bubbles

Examples

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Embodiment 1

[0016] Example 1, see Figure 1-4 , a method for eliminating air bubbles at the bottom of the main girder of the blade, comprising the following steps:

[0017] a. Blade laying: first lay the VAP film 5 in the span direction in the main beam placement area 4, and use the VAP film air bridge 6 to connect the span direction VAP film and the air inlet 3 of the parting side of the blade mold 1; Lay the pressure side outer skin 10 on the suction side shell mold, lay the suction side outer skin 13 on the suction side shell mold, lay the reinforcing layer glass fiber on the front blade root, then put the pressure side main beam 9 and the suction side main beam 12, and then Lay the core material, the glass fiber of the rear blade root reinforcement layer and the glass fiber of the inner skin, and finally lay the perfusion auxiliary material;

[0018] b. Blade perfusion: After the laying is completed, the vacuum pump is connected to the glue injection port 2 and the parting side sucti...

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Abstract

The invention relates to a method for eliminating blade girder bottom bubbles. The method is characterized by comprising the main steps of 1, laying blades, wherein a VAP film is spanwisely laid inside a girder placement region, a pressure surface outer skin is laid on a shell, then, a girder is placed in, and then a core material and the like are laid; 2, performing perfusion on the blades, wherein a vacuum pump is simultaneously connected with a glue injection opening and a mold splitting side exhaust opening for air exhaust, and the whole shell is vacuumized into a vacuum system; 3, performing bonding solidification. Blade girder bottom bubbles can be effectively eliminated. By adopting resin integrated online perfusion equipment, bubbles mixed into resin after mixing is performed can be reduced, the operation efficiency can be improved, and the perfusion whitening and bubble defect occurrence probability can be lowered. Operation is convenient, the finished blade quality is ensured, the production efficiency is improved, and the production cost is lowered.

Description

technical field [0001] The invention belongs to the field of manufacturing wind power blades, and in particular relates to a method for eliminating air bubbles at the bottom of a main girder of a wind power blade. Background technique [0002] As a key component of wind power generators, wind turbine blades' operation stability will directly affect the normal operation of wind turbines, and the quality control of blades will be particularly critical. At present, most blade structures are composed of suction side shell, pressure side shell, and web. The main girder and web are prefabricated first, and the prefabricated main girder and shell are poured together. The suction side shell, web, pressure The face shells are bonded by structural glue to form the blades. During the blade forming process, dense air bubbles are easily formed between the prefabricated main beam and the outer skin of the shell, which seriously affects the quality of the blade. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54
Inventor 马寅虎刘普亮许秀强刘华李泽科
Owner BAIYIN SINO WIND ENERGY