A method for preparing a manhole plate at the root of a megawatt wind power generation blade and a manhole cover plate thereof

Abstract

The invention discloses a method for preparing a manhole plate at the root of a megawatt-level wind power generation blade and a manhole cover plate. When preparing the manhole plate, a special manhole steel mold inner ring mold is firstly designed, and then a prefabricated manhole steel mold inner ring is laid as the center. Resin-impregnated fiber cloth and sandwich structure, vacuumed, heated and cured, and finally released from the mold; when preparing the manhole cover, according to the structural characteristics of the manhole plate at the root of the fan blade, a special mold for the manhole cover steel mold is designed, and then the impregnated ring Oxygen resin chopped strand mat and fiber cloth are laid in the steel mold according to the optimal plan to reach the required thickness, then cured, and then trimmed to prepare a firm bond, good stability, high strength, smooth appearance, and high quality. Excellent manhole cover. The method has the advantages of strong operability, high degree of industrialization, high production efficiency and wide application range.

Description

technical field [0001] The invention relates to a preparation method of a wind power generator blade, in particular to a preparation method of a manhole plate at the root of a megawatt wind power generation blade and a manhole cover plate thereof. Background technique [0002] In the manufacturing process of megawatt-level wind turbine blades, the manhole plate at the root of the blade can prevent foreign matter from entering the interior of the blade, provide an operating platform for maintenance personnel, and play a role in structural support. The shape of the manhole plate is circular, and the structure is Foam sandwich FRP structure; the manufacturing process of the manhole plate at the root of the megawatt wind turbine blade in the prior art has been divided into semicircular layers, and then the manholes are cut and assembled together. method, the prepared manhole plate has a high difference in strength, an unattractive appearance, low production efficiency, and high ...

AI Technical Summary

Problems solved by technology

[0002] In the manufacturing process of megawatt-level wind turbine blades, the manhole plate at the root of the blade can prevent foreign matter from entering the interior of the blade, provide an operating platform for maintenance personnel, and play a role in structural support. The shape of the manhole plate is circular, and the structure is Foam sandwich FRP structure; the manufacturing process of the manhole plate at the root of the megawatt wind turbine blade in the prior art has been divided into semicircular layers, and then the manholes are cut and assembled together. method, the prepared manhole plate has a high difference in strength, an unattractive appearance, low production efficiency, and high production cost

However, the current molding process of manhole cover plates at the root of megawatt-level wind power blades is basically hand lay-up, which is hand-laid on a flat plate, with irregular cutting dimensions, inconsistent thickness requirements, and low strength. Poor performance and poor matching of the manhole plate, and the sealing is not tight

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