Manufacturing method of retractable fan blade with electric heating anti-icing function

1. The present invention relates to a retractable fan blade with electric heating and anti-icing function, which belongs to the technical field of wind power generation.

Background technique:

2. As the power of the wind turbine continues to increase, the length of the blades of the wind turbine continues to increase. Especially offshore wind turbines, megawatt-class wind turbines are becoming increasingly bulky.

3. The blade is one of the key components of a wind turbine, which is mainly used to convert the wind speed of natural wind into the kinetic energy of the wind turbine, and then into electrical energy through the generator.

4. In extreme windy weather, the wind turbine cannot work normally. If the wind turbine blade is too large, it will cause certain damage to the blade even in the shutdown environment, especially when the blade is under heavy load. The tip of the blade is relatively weak, and the tip of the blade is generally relatively weak. At the same time, the tip of the blade is also the main area of icing in winter, and the icing will increase the load of the blade.

5. The existing technology usually solves the strong wind and bad weather through the pitch system. According to the principle of aerodynamics, the blade is feathered by 90%.

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The rotation is parallel to the wind direction to achieve the purpose of stopping, but this also brings some problems: the wind turbine can not work when it is stopped, and it will be destroyed when encountering strong winds.

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