Manufacturing method for root part of megawatt wind turbine blade

Abstract

The invention discloses a manufacturing method for a root part of a megawatt wind turbine blade, which comprises the following steps of: making a root part insertion component on an auxiliary mechanism; overturning and hanging the insertion component; because the curvature radius of the insertion component when hanging into a blade die is less than that of the blade die, the fabric of the root part insertion component can well adhere to the surface of the die; and continuously layering the left root part fabric on the surface of the inserted root part insertion component fabric; after the layering is completed, filling a resin under vacuum; and curing and shaping. Because the inserted insertion component is a dry fabric, the over 100 layers of fabric on the root part can be filled together, so the phenomenon that a dry area is easy to appear in a glass fabric under the cured insertion component is avoided. The manufacturing method avoids the phenomena, such as collapse, fold and the like, caused by directly layering by the traditional handwork and is an improvement on the conventional method.

Description

technical field [0001] The invention relates to a manufacturing technology of wind power generation equipment, in particular to a manufacturing method of the blade root of a megawatt wind rotor. Background technique [0002] The root of megawatt-class wind turbine blades is made of more than 100 layers of glass fiber cloth. These glass cloths need to be laid into the mold layer by layer during manufacturing, which is very inefficient, and the glass cloths on both sides of the blade mold collapse and wrinkle from time to time. In order to overcome the above shortcomings, some companies lay a part of the thickness in a separate mold, vacuum infuse the resin to cure and make a root prefabricated part, and then put the root prefabricated part into the blade mold and pour it together with the blade shell to form a whole . Its disadvantage is: because such preforms will exotherm when solidified, the temperature will rise. This will cause it to deform, it won't fit the mold well...

AI Technical Summary

Problems solved by technology

Its disadvantage is: because such preforms will release heat when curing, the temperature will rise

This will cause it to warp, it won't fit the mold well when placed in the mold, and there will be some gaps

If the precast mold is oversized, there is a risk that the preform will not fit in the mold

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