Polyurethane resin pouring structure of wind turbine blade, and forming method

Abstract

The invention discloses a polyurethane resin pouring structure of a wind turbine blade, and a forming method. The pouring structure comprises a bottom-layer diversion medium, a reinforcement material,an upper-surface diversion medium, a glue pouring pipeline, an Ohm pipe used for glue pouring and a spiral pipe, wherein the bottom-layer diversion medium is disposed on the bottommost layer of a die; the reinforcement material is paved on the bottom-layer diversion medium; the upper-surface diversion medium is disposed on the upper surface of the reinforcement material at a chordwise glue filling side and is in partial lap joint with the upper surface of the reinforcement material; the Ohm pipe is disposed on an edge of the upper-surface diversion medium along an extending direction; a sleeving tubular diameter of two ends of the Ohm pipe is smaller than the diameter of the spiral pipe of the Ohm pipe; and a glue pouring hole of the glue pouring pipeline is located at the middle of the extending direction of the die and is docked with the Ohm pipe. The pouring structure disclosed by the invention has the beneficial effects that an overall pouring speed is increased; prolonging of pouring time caused by irrational flow channel design at a few of positions is avoided, so production efficiency is increased; easy occurrence of pouring failure during manufacture of polyurethane composite material products can be improved; and risks in shaping are reduced.

Description

technical field [0001] The invention belongs to the field of composite material molding, and in particular relates to a polyurethane resin perfusion structure and molding method of a wind power generation blade. Background technique [0002] At present, wind power blades usually use two-component epoxy infusion system resin in the production process. That is to say, the system is under certain negative pressure conditions, and the resin is injected into the reinforcing material from the outside, and then solidified and formed. In order to optimize the blade quality and shorten the production cycle, a thermosetting polyurethane resin composed of polyol (Baidol 78BD085) and isocyanate (Desmodol 44CP20) is specially developed. The mechanical properties, interlaminar shear properties and fatigue resistance of the laminates all meet Wind rotor blades of a wind turbine. Using the polyurethane resin system and reinforcing materials to prepare wind power blade composite materials ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology, and provide a polyurethane resin perfusion structure and molding method for wind power generation blades, so as to solve the defects of rich glue and poor infiltration

Images