Blade inner reinforcement method and wind generating set blade

Abstract

The invention discloses a blade inner reinforcement method and a wind generating set blade. The method comprises the steps that a plurality of glass fiber cloths are pre-laid and sewed together; the sewed glass fiber cloth layers are laid on the inner reinforcement area and fixed; and the inner reinforcement area is vacuumized, then resin permeates into the glass fiber cloth layers through vacuumfilling and is solidified into the glass fiber cloth layers, and during resin filling and resin solidification, the pressure of the inner reinforcement area is maintained. Through the inner reinforcement method, generation of hand layup bubbles is reduced, the inner reinforcement strength is improved, and the operation time in a reinforcement station in blade manufacturing is shortened.

Description

technical field [0001] The present invention relates to the field of wind power generation. Specifically, the present invention relates to a method for reinforcing a blade, in particular to a method for internal reinforcement of a blade, and also relates to a blade of a wind power generating set. Background technique [0002] When manufacturing the blades of wind power generators, after the blades are bonded and molded, it is necessary to reinforce the front and rear edges of the blades to improve the structural strength of the connection between the windward and leeward sides of the blades and ensure the windward and leeward sides of the blades. The bonding of the leeward side increases the bonding strength of the front and rear edges of the root, thereby preventing the structural glue from cracking at the front and rear edges of the root. [0003] At present, most of the hand lay-up glass fiber reinforcement process is used for reinforcement after the blade is bonded and m...

AI Technical Summary

Problems solved by technology

Due to the manual operation of the whole process, the glass fiber resin content is uneven during the hand lay-up of glass fiber reinforcement, and more hand lay-up air bubbles are likely to be generated, and it is also difficult to completely remove the hand-lay-up air bubbles, resulting in poor glass fiber impregnation and other hand lay-up Defects, which in turn lead to a decrease in the strength of the reinforcing layer, fatigue caused air bubbles to diffuse, and the reinforcing layer and the shell to fall off during the operation of the blade

[0004] In addition, when hand-laying up glass fiber reinforcement, various problems and defects such as slipping, wrinkling, and overhead of the reinforcing glass fiber cloth, excessive spray glue residue, sagging of hand-laying resin, and smooth resin surface are prone to occur.

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