Composite layering type wind turbine blade and manufacturing method thereof

Abstract

The invention discloses a composite layering type wind turbine blade and a manufacturing method thereof. A bamboo laminated timber layering with high specific stiffness is adopted for a girder at a blade root section of the blade; a zero-degree single direction layering with high specific strength is adopted for a girder from a blade middle to a blade tip; a lap joint reinforcing section is arranged between the bamboo laminated timber at the blade root section and the zero-degree single direction layering from the blade middle to the blade tip; the layering design of the lap joint reinforcingsection not only ensures the continuity of the stiffness of the blade and meets the integral strength requirement of the blade, which is favorable for the transmission of loading, but also satisfies the split-level requirement of the technology design; and moreover, the oblique plane of the upper surface of the bamboo laminated timber at the lap joint reinforcing section is subjected to corona treatment, the surface roughness of the bamboo laminated timber is increased, and the interface bonding force between glass fiber cloth and bamboo laminated timber is improved. According to the invention, the layering type of the blade is changed, thus the layering design of the blade is corresponding with the force property of the blade, and the strength of the blade root is improved as well as thestrength requirement of the blade from the blade middle to the blade tip is satisfied; and the bamboo laminated timber layering is adopted for the girder at the blade root of the blade, which is corresponding with the requirement of environment protection.

Description

technical field [0001] The invention relates to the technical field of wind turbine blades, in particular to a composite laminated wind turbine blade and a manufacturing method thereof. Background technique [0002] Wind turbines are often operated by the sea or remote mountaintops in harsh environments. Wind turbines operating in some areas of our country have to withstand harsher environmental conditions, such as frequent typhoons in the southeast coastal areas, low temperature in winter in northern China, and so on. The wind turbines currently in operation cannot fully adapt to the climatic conditions of our country, so that damage and failure of wind power equipment occur from time to time. Satisfy the stress characteristics of the blade, so as to continuously improve the ability of the blade to adapt to different environments. [0003] The operating environment of the blades is harsh. Due to the uncertainty of the wind, the operating conditions of the wind turbines ar...

AI Technical Summary

Problems solved by technology

These two layup types do not combine the mechanical characteristics of the blade structure. The blade main beam layup uses glass cloth with high specific strength. The overall strength of the blade is high, but the stiffness characteristics of the blade root section cannot be guaranteed; the blade main beam layup uses For bamboo laminated lumber with high specific stiffness, the overall stiffness of the blade is high, but the strength characteristics of the middle section of the blade cannot be guaranteed

Therefore, the lay-up pattern of these blades cannot match the mechanical characteristics of the blade to the greatest extent

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