A perfusion system and perfusion molding process for pre-embedded wind power blade roots

Abstract

The invention discloses a perfusion system for pre-embedded wind power blade roots, which includes one or more layers of flow guide nets laid on the glass fiber cloth on the inner surface of the blade root shell, and the surface of the flow guide nets is provided with a vacuum The bag film, intersecting and vertically arranged spanwise glue-injecting ohmic tubes and chord-direction glue-injecting ohmic tubes are arranged between the diversion net and the vacuum bag film, and the intersection of the span-direction glue-injecting ohmic tubes and the chord-direction glue-injecting ohmic tubes There is a glue injection port. The invention also correspondingly provides a pouring molding process for the blade root of the wind power blade. The perfusion system of the present invention adopts spanwise glue injection ohmic tubes and chordwise glue injection ohmic tubes in a T-shaped arrangement, and only needs 2 glue injection pipes and 1 glue injection port. The root is permeable, and the perfusion process only needs to be opened once, which is easy to operate and control, which solves the problem that the opening and closing timing of multiple injection tubes is difficult to control, and the problem of poor infiltration caused by entrapped flow also reduces the risk of air leakage from multiple injection ports.

Description

technical field [0001] The invention belongs to the field of composite material molding, and in particular relates to a pouring system and a pouring molding process for blade roots of wind power blades. Background technique [0002] With the advancement of national energy conservation and emission reduction policies, green and environmentally friendly energy is the key development direction in the future. Wind energy has the advantages of low energy consumption, environmental protection, and large reserves, and has become a key energy source for development at home and abroad. A wind turbine is a device that converts wind energy into electrical energy, and the blade is one of the core components of the wind turbine. In the production process of the blade, the runner laying process is the most critical forming process, and the quality of the runner laying directly affects the perfusion effect of the blade. [0003] In the whole blade, the glass fiber cloth layer at the root...

AI Technical Summary

Problems solved by technology

[0004] The Chinese invention patent with the publication number CN107199715A discloses a bolt sleeve pre-embedded blade root injection method. The method adopts a one-way arrangement of glue injection pipes, that is, the direction of the core of the glue injection pipe is the spanwise direction of the blade, and multiple pipes are arranged side by side in the chord direction. In the leaf root flow channel made by this method, the number of injection pipes needs to be many, and there are many injection ports, and the risk of perfusion air leakage is high. During the perfusion process, the opening timing of each injection hose needs to be controlled accurately, and the timing of opening the pipes is not well controlled. The problem of entrapment is prone to occur, resulting in poor root infiltration. In addition, the flow channel is not simple and quick to operate, and the cost is relatively high

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