Pre-curing perfusion method for wind power blade without flow guide net

Abstract

The invention discloses a pre-curing perfusion method for a wind power blade without a flow guide net. The pre-curing perfusion method for the wind power blade without the flow guide net comprises seven steps of cleaning a mould, laying the demoulding cloth, laying the outer skin cloth layer, beam mounting, laying core materials, laying the inner skin, laying other auxiliary materials, and filling. According to the pre-curing perfusion method for the wind power blade without the flow guide net, PVC core material with chordwise linear grooves with the width and the depth of 2.0 mm and the spacing of 20+ / -2 mm arranged on the outer surface chordwise or light wood core materials with chordwise linear grooves with the width of 1.2 mm, the depth of 1.5 mm and the spacing of 20+ / -2 mm arranged on the outer surface chordwise are adopted, so that when pouring, resin is directly poured into the linear grooves, the permeability of the poured resin is obviously improved, and the poured resin consumption is reduced. The flow guide net is not needed to be laid in the grooved area of the core materials. During pouring, the resin is directly poured into the core material grooves, which can significantly improve the moving speed of the poured resin, significantly reduce the consumption of the auxiliary materials, further effectively reduce the production cost, shorten the production cycle of the wind power blade, and improve the production efficiency and economic benefits.

Description

technical field [0001] The invention relates to the technical field of wind power blade production, in particular to a method for pre-curing and perfusing a wind power blade without a diversion net. Background technique [0002] Pre-curing infusion is one of the important processes in the production process of existing wind power blades. Due to the thick cloth layer and core material, it is difficult for the infusion resin to penetrate, so it is often adopted to lay a diversion net on the upper surface of the inner skin to achieve a vacuum environment. The under-infusion resin flows quickly, so as to obtain the best infusion effect, but the addition of the guide net greatly increases the production cost of the wind power blade. [0003] The commonly used core material of existing wind power blades is PVC or balsa wood. However, the unreasonable groove method of PVC and balsa core material is an important factor that leads to the increase of the amount of diversion net. At p...

AI Technical Summary

Problems solved by technology

This slotting method is not conducive to the permeation of the perfusion resin. It increases the amount of perfusion resin while increasing the use of the guide net, which significantly increases the production cost and prolongs the production cycle of the blade.

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