Blade root pouring method for bolt sleeve embedded blade

Abstract

The invention discloses a blade root pouring method for a bolt sleeve embedded blade. The method comprises the die cavity preparing step; and lower glass fiber laying, continuous felt laying, embeddedpart laying, upper glass fiber laying, flow guide net laying, glue injecting pipe laying, air exhaust bag laying and glue pouring are carried out. A continuous felt is placed on the lower face of thebottom of an embedded part, a first flow guide net and a glue injecting pipe are laid on the embedded part and the upper glass fiber cloth, and the distance between the starting point of the first flow guide net and the starting point of the embedded part ranges from 0 mm to 300 mm; the first flow guide net is divided into three segments including a rear edge flow guide net, a middle segment flowguide net and a front edge flow guide net in the circumference direction, and a resin deceleration belt with the width ranging from 30 mm to 150 mm is arranged among the rear edge flow guide net, themiddle segment flow guide net and the front edge flow guide net, and the glue injecting pipe is arranged in the length direction of the embedded part; and air exhaust bags are arranged at the position, above the first flow guide net, of the front edge and the rear edge of a blade root. According to the method, the problem that due to uneven resin flow speed, resin in the blade root area of an embedded blade is hollow is solved, and the blade root connecting strength can be further improved.

Description

technical field [0001] The invention relates to the technical field of making blades of wind power generators, in particular to a pre-embedded root of a large composite material blade [0002] Parts perfusion method. Background technique [0003] At present, the wind power generation blades usually adopt vacuum-assisted molding process in the manufacturing process. That is to say, under the condition of certain negative pressure in the system, the glue solution is injected into the reinforcing material from the outside, and then solidified and formed. Among them, the glue must be defoamed before use to remove excess air bubbles in the glue, to ensure the resin content and production quality of the product, and to improve the strength of the blade. With the increase of the diameter, length and weight of the blade, the connection strength required for the connection of the blade root increases accordingly. At present, the embedded method is mostly used to increase the number...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a bolt sleeve pre-embedded blade root filling method, which can solve the problem of resin voids in the pre-embedded blade root area caused by uneven flow velocity of the resin, and enhance the connection strength of the blade root

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