Blade root structure of wind power blade

Abstract

The invention provides a blade root structure of a wind power blade. The blade root structure comprises a bolt sleeve, two or more layers of bamboo splints, glass fiber and / or carbon fiber reinforced materials and a glass fiber skin, wherein the two or more layers of bamboo splints are positioned in the thickness direction of a blade root; the glass fiber and / or carbon fiber reinforced materials are positioned between the bolt sleeve and the bamboo splints; and the glass fiber skin is formed on the inner surface and the outer surface of the blade root. Through the blade root structure, connection safety between the blade and a hub is guaranteed, meanwhile, the weight of the blade root is reduced, the cost of the blade root and the production investment of the blade are reduced, and the damage caused to the environment after recovery of the blade is reduced. The invention also provides a manufacturing method for the blade root of the wind power blade at the same time.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a blade root structure of a wind power blade. Background technique [0002] At present, the root connection method of large-scale wind turbine blades mostly adopts the post-drilling process of FRP, that is, the method of drilling holes in the thickness direction of FRP at the blade root and then assembling metal bolt sleeves to realize the connection between the blade and the hub. Because this connection method destroys the glass fiber of the blade root, it will cause the strength of the blade root to decrease. Therefore, the blade root needs a large amount of glass fiber to ensure the structural safety of the blade root. This not only causes the weight of the blade root to be heavy and the cost of the blade is high, but also causes a great waste of materials because the blade root needs to be cut after the blade is formed. In addition, post-punching equipment is expensive a...

AI Technical Summary

Problems solved by technology

Because this connection method destroys the glass fiber of the blade root, the strength of the blade root will be reduced, so the blade root needs a large amount of glass fiber to ensure the structural safety of the blade root

This not only causes the weight of the blade root to be heavy and the cost of the blade is high, but at the same time, because the blade root needs to be cut after the blade is formed, it also causes a great waste of materials

In addition, the post-punching equipment is expensive and occupies a large factory area, resulting in a large investment in the early stage of the blade factory and a serious waste of social resources

FRP is not easy to recycle, and when the blade reaches the end of its life, the disposal of FRP is also a big environmental problem

Images