A method of manufacturing a wind power blade girder mold

Abstract

The invention belongs to the technical field of wind power generation, and in particular relates to a manufacturing method of a wind power blade girder mold. A method for making a wind power blade girder mold is proposed: make a blade male mold, and turn the blade female mold on the blade male mold; after the blade female mold is manufactured, make a standard blade mold on the blade female mold. The blade girder model, and then the blade girder male mold is reproduced on the blade girder model. The invention can precisely control or adjust the gap between the blade shell and the shear web; when the beam is produced by the male mold of the beam, its unique stepped structure makes the layers of the beam longer than one layer, that is, each Each layer can cover the layer below it; it can avoid or minimize the decline in mechanical properties caused by the structural damage of the girder.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a manufacturing method of a wind power blade girder mold. Background technique [0002] With the development of new energy development, more and more attention has been paid to wind power generation, which has ushered in a high-speed development opportunity in recent years. With the steady increase in the total number of installed wind turbines, wind turbine blades have also developed rapidly. [0003] Wind power blades are composed of multiple parts, such as girders, webs, sandwich layers, lightning protection systems and root connection systems, etc. Among them, the girder is the most important structural part of the entire blade. It is the area with the most concentrated stress during the operation of the blade. It needs to bear the bending moment generated by the deformation of the blade, and is the main component of the blade's anti-fatigue. Due t...

AI Technical Summary

Problems solved by technology

During the forming process of the girder, there will be different degrees of deviation in the starting and ending positions of each layer of uniaxial cloth after it is placed, so that the thickness of the girder at this position will change, and after the girder is poured into the blade shell, it will make The mold clamping gap of the blade at this position changes, and the smaller the mold clamping gap will cause the top mold of the web, the larger the mold clamping gap will cause defects such as virtual sticking between the web and the shell

In addition, when the girder is produced in the female mold, if the girder has defects such as air leakage or unsaturated dry yarn, these defects will be concentrated on the upper surface of the girder, and each layer of uniaxial cloth of the girder formed in the female mold has a part exposed on the upper surface of the girder, which results in this defect often occurring in many layers of the girder

Therefore, when repairing these defects, many layers of the girder will be damaged, which not only increases the difficulty of maintenance, but even if the effect of maintenance is not considered, the structure of the girder itself has been damaged, so that the mechanical properties and fatigue resistance of the girder Decreased performance, affecting blade service life

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