Plate for making wind turbine blades, wind turbine blade spar cap structure and preparation method

Abstract

The invention discloses a plate for making wind turbine blades, a wind turbine blade spar cap structure and a preparation method, and relates to a rotor blade for a wind turbine. The plate is made of fiber materials and curable materials, and its upper surface and / or lower surface There are stripping grooves along the length of the sheet. The pultruded sheet has two side structures on both sides of the stripping groove. Each side structure is provided with at least one stripping groove for connecting adjacent sheets. The drainage groove and the blade spar cap structure are mainly made of stacked plates and cured by resin. By using the release cloth groove on the board as a channel for resin flow, there is no need to make grooves on the board by grinding in the later stage, so that the fibers near the surface of the board will not break and will not affect the structural strength of the board; through the side of the board Drainage grooves are arranged on the side, so that the resin can enter between the plate layer structures from the side of the plate, which is conducive to the rapid infusion of the resin and can reduce the number of air cavities between the plate layers.

Description

technical field [0001] The invention relates to a rotor blade for a wind turbine, more specifically, it relates to a plate for making a wind turbine blade, a structure of a spar cap of the wind turbine blade and a preparation method. Background technique [0002] Wind turbine blades are usually stacked by plates made of carbon fiber. In order to ensure the structural strength of the blades, curable materials, such as resin, are poured between the plates. In order to ensure the bonding strength between two adjacent panels, the resin is poured between the panels as evenly as possible. However, because the gaps between the plates are small, the resin often cannot be poured evenly, thus leaving air bubbles between the plates and reducing the structural strength of the blade. [0003] In order to be able to eliminate air bubbles, in the prior art, for example, the Chinese patent with the patent notification number CN200610126234.6 proposes a method for manufacturing continuous l...

AI Technical Summary

Problems solved by technology

However, the above structure also makes the distance between the plates larger, which reduces the structural strength of the blade to a certain extent.

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