Blunt trailing edge wind turbine blade and its trailing edge facade core material fixing method

Abstract

The invention provides a blunt trailing edge fan blade. A blunt trailing edge comprises a trailing edge outer skin, a trailing edge inner skin and a vertical face core material between the trailing edge outer skin and the trailing edge inner skin; a region, which corresponds to the vertical face core material, on the trailing edge outer skin is provided with an outer skin through hole; the outer skin through hole is filled with an adhesive; the adhesive is adhered to the core material. The invention also provides a method for fixing the vertical face core material of the trailing edge of the blunt trailing edge fan blade. According to the blunt trailing edge fan blade provided by the embodiment of the invention, the core material is laid neatly, so that a resin-rich region caused by shifting of the core material is avoided on the corner of the blunt trailing edge; the core material is laid neatly, so that the spacing from the edge of the core material to the edge of a die is easy to control and cannot be excessive due to slippage of the core material to cause super poor quality of the core material.

Description

technical field [0001] The application relates to a fan blade with a blunt trailing edge and a method for fixing the core material of the trailing edge facade. Background technique [0002] In blunt trailing edge fan blades, it is generally necessary to set up a facade at the position where the pressure surface or suction surface is close to the rear edge of the blunt trailing edge fan blade, so that the blunt trailing edge structure can be formed after the pressure surface and the suction surface are fastened together. The skin design of large fan blades usually adopts a sandwich structure. When laying layers, the outer skin glass fiber cloth-core material-inner skin glass fiber cloth is laid in the order, and a small amount of spray glue is used on the facade to cover the core material. Fixed on the outer skin fiberglass cloth. [0003] In the actual industrial production process, the core layer of the facade area of ​​the trailing edge of the blunt trailing edge blade ad...

AI Technical Summary

Problems solved by technology

[0004] In order to solve many disadvantages caused by the excessive use of adhesive glue in the blunt trailing edge fan blade and the displacement of the trailing edge core material in the prior art, the present invention provides a blunt trailing edge fan blade and its trailing edge elevation core material fixing method

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