Front edge protection wind power blade and forming method thereof

Abstract

The invention discloses a front edge protection wind power blade and a forming method thereof, a front edge protection film is arranged on the front edge of the blade, and the front edge protection film is of a multi-layer structure and sequentially comprises a protection layer, a buffer layer and a bonding layer from outside to inside. The protective layer is made of polytetrafluoroethylene filled with a graphite reinforcing agent or a polymer modified material with the same performance, the buffer layer is made of high-elasticity polyurethane foam or high-density elastic foam with the same performance, and the bonding layer is a glass fiber adhesive tape. A V-shaped groove is formed in the front edge protective film, and the front edge protective film and the hyperboloid blade shell are good in shape follow-up performance during bonding. The front edge protective film can be integrally formed with a blade shell in a pouring mode, can also be installed after the blade is demolded, is simple in forming process, high in operability and long in service life, has conductivity and can conduct lightning stroke protection on the front edge of the blade.

Description

technical field [0001] The invention belongs to the technical field of wind power generation blades, in particular to a leading edge protection wind power blade and a molding method thereof. Background technique [0002] As a green and clean possible source, wind energy has developed rapidly in recent years, and the installed capacity has continued to grow. As an important component in wind power generation, the main raw material of wind turbine blades is glass fiber reinforced material. When the blade rotates, the leading edge of the blade first "splits" the airflow, and first directly contacts and collides with the particles in the air. Due to factors such as edge impact and ultraviolet aging, the capacity causes wear and corrosion of the leading edge of the blade. At the same time, because the blade is in a high terrain, the leading edge is also vulnerable to lightning strikes. Corrosion of the leading edge and lightning strike will destroy the aerodynamic characteristic...

AI Technical Summary

Problems solved by technology

Leading edge corrosion and lightning strikes will destroy the aerodynamic characteristics of the blade and affect the power generation. If the corrosion is too severe, it will cause huge damage to the blade and the maintenance cost is extremely high. Therefore, it is very important to protect the leading edge of wind turbine blades.

[0003] At present, one of the common leading edge protection wind power blades is to paste a polyurethane film with pressure-sensitive adhesive on the leading edge of the blade, but the leading edge of the blade is a hyperboloid structure with continuously changing curvature in the length direction and chord direction. It is difficult to follow the shape of the leading edge during the process, and the pressure-sensitive adhesive is not firmly bonded to the shell, and the film is easy to fall off during the operation of the blade; the other is to apply the coating on the leading edge of the blade after the blade is formed Edge protective paint, the painting has higher requirements on the process, and the operation time is long

At the same time, the above two methods still have problems such as the inability to protect the front edge from lightning strikes, the construction process is complicated, the wear resistance is poor, and the protection period is short.

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