Z-pin reinforced composite wind turbine blade and manufacturing method thereof

A technology for reinforcing composite materials and wind turbine blades, which is applied in the field of composite material reinforcement and can solve problems such as poor connection interface performance
CN104552994BActive Publication Date: 2017-01-11NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2017-01-11

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Abstract

The invention relates to a Z-pin reinforced foam sandwich composite wind turbine blade and a manufacturing process thereof, belonging to the technical field of fiber composite reinforcing. The manufacturing process comprises the following steps: implanting Z-pin into a foam preform, and preparing a composite connection layer; laying an upper half shell and a lower half shell in a wind turbine blade mould, and implanting Z-pin into a connecting part of the lower half shell and the connection layer in the direction perpendicular to the shell; pouring a foaming material in a lower mould, and then closing an upper mould; after the foaming of the foaming material is finished, taking down the upper mould, implanting Z-pin perpendicular to the shell from the outside at a joint of the upper half shell and the upper half part of the connection layer, and then closing the upper mould; solidifying the Z-pin reinforced composite wind turbine blade. The manufacturing process provided by the invention has the advantages of obviously improving the connection strength and the fatigue resistance performance of the joint of the upper shell and the lower shell of the composite wind turbine blade, and avoiding the structural damage caused by ungluing of the upper and the lower shells, and the Z-pin is light in weight and high in strength, so that the requirement of the wind turbine blade for the material is met.
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Description

technical field

[0001] The invention relates to a Z-pin technology applied to composite material wind power blades and a manufacturing method thereof, belonging to the technical field of composite material reinforcement. Background technique

[0002] Composite wind turbine blades are the key components of energy conversion in wind turbines, and they are also the most complex components. The quality of their design and manufacture is directly related to the efficiency and service life of wind turbines, and affects the performance of the entire system. Among them, foam sandwich wind turbine blades are now commonly used composite material blades because of their light weight and high strength. For large blades, due to the difficulty in overall preparation, the blades are prepared in two parts, namely the upper half-shell and the lower half-shell. There is a connection interface between the upper half shell and the lower half shell. When the blade is under force, the interface ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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