Patent ID: 8328976
Filing Date: 2012-12-11
Classification: B29C,B29K,B29L,F03D,F05B,Y02E,Y02P

Abstract:
1. A method of manufacturing root of megawatt wind-turbine blade, comprising: (1) manufacturing an independent female mould for a prefabricated part and a blade mould, one side of the independent female mould being a working surface, the working surface including a curved surface and two flanges which are respectively extended along two upright edges of the curved surface, with the inner diameter of the curved surface being equivalent to the outside diameter of a blade root minusing the thickness of glass fabrics which are to be laminated in the blade mould previously, and arranging a positioning stop-ring whose radian is equivalent to that of the curved surface on the curved surface of the independent female mould; (2) laying a plurality of glass fabrics on the curved surface of the independent female mould in turn, with said plurality of glass fabrics against one side of the positioning stop-ring; while laying, coupling the adjacent glass fabrics together using spray glue, after laying every six to eight glass fabrics, applying glass adhesive tapes on both sides of the glass fabrics and two said flanges, so that two sides of the glass fabrics are fixed on two said flanges of the independent female mould, meanwhile, laying a macroporous glass fabrics after every ten said glass fabrics, said plurality of glass fabrics and said plurality of macroporous glass fabrics forming the prefabricated part; (3) after laying, removing the positioning stop-ring from the independent female mould, and putting a vacuum bag on the working surface of the independent female mould, then sealing the whole independent female mould and vacuumizing the independent female mould, so as to compact said glass fabrics laid on the working surface of the independent female mould, and arranging a curved supporting board on the vacuum bag, thereafter stopping vacuumizing and removing the vacuum bag; (4) laying a plurality of glass fabrics in the blade mould, then lifting the prefabricated part together with the curved supporting board arranged on the prefabricated part from the independent female mould, and arranging the prefabricated part together with the curved supporting board on said plurality of glass fabrics in the blade mould; and (5) removing the curved supporting board, and laying another vacuum bag on the blade mould, then sealing the whole blade mould and vacuumizing the blade mould, thereafter infusing resin into the blade mould, after curing a root of blade is finally formed.