Preparation method of wind turbine blade

Abstract

The invention discloses a preparation method of a wind turbine blade. The method comprises the following steps: laying fiberglass cloth, girders and a sandwich core in a suction side / pressure side shell mold, then carrying out vacuum resin infusion, solidifying and demoulding to obtain an integral body of shells and the girders; laying the fiberglass cloth, a core material and the fiberglass clothsequentially in a wind turbine blade prefabrication trailing edge mold, carrying out vacuum resin infusion, solidifying and demoulding to obtain a prefabricated trailing edge; molding the prefabricated trailing edge integrally by using the trailing edge of the suction side shell and the trailing edge of the pressure side shell; respectively sticking the two ends of a leading edge web and a trailing edge web with the suction side girder and the pressure side girder, and enabling the suction side shell to be partially stuck with the front edge part of the pressure side shell; sticking the prefabricated trailing edge with the suction side shell and the pressure side shell to obtain the wind turbine blade. The prefabricated trailing edge can be used for detailing control of a vertex, so thatthe molding defects such as folds are avoided to the utmost extent; the sticking surfaces of the prefabricated trailing edge and the shells are planes, so that the sticking difficulty is greatly reduced, and the quality is also guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind power blades, and in particular relates to a preparation method of wind power blades. Background technique [0002] With the advent of the era of new energy parity, low cost and high reliability have become the key to design and manufacture in the development of large-scale wind turbine blades. At present, the structure of wind power blades is generally composed of the blade suction side shell, the blade pressure side shell, and the web. The girder and the web are prefabricated. During production, the prefabricated girder is poured together with the blade shell. After forming The suction side shell, prefabricated web, and pressure side shell are bonded by structural adhesive to complete the final wind turbine blade structure. The leading edge and trailing edge of the blade shell are integrally formed with the blade suction side shell and the blade pressure side shell, and finally the leading edge of...

AI Technical Summary

Problems solved by technology

In this invention, the trailing edge of the high-pressure plate and the trailing edge of the low-pressure plate are integrally formed with the high-pressure plate and the low-pressure plate respectively. There is a problem of conformity between the joints, it is difficult to achieve the ideal bonding thickness, and it is easy to cause the bonding thickness to exceed the standard, which will reduce the bonding performance. Blade structure reliability

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