Ice preventing and ice removing wind power blade and manufacturing method thereof

Abstract

The invention provides an ice preventing and ice removing wind power blade and a manufacturing method thereof. By laying a heat conducting material layer high in heat conduction coefficient in a grooved middle core material to improve the heat conduction coefficient of a wind power blade body, heat generated by heating resistors can be fast transmitted to the outer surface of the wind power bladebody, and therefore energy needed for heating the wind power blade body can be reduced to be lowest, and the problems that because of internal heating in the prior art, the interior temperature of thewind power blade body is too high, the material performance loss of the wind power blade body is caused, and consequently the service life is shortened, and combustion of the wind power blade body iscaused are solved. The heating resistors are uniformly arranged in epoxy structural glue as an adhesion agent, primary packaging is performed when adhering is performed, a glass fiber protecting layer infiltrated by resin is arranged so that the service life of the heating resistors is prolonged, the application reliability of the ice preventing and ice removing wind power blade is guaranteed, and application and popularization value is great.

Description

technical field [0001] The invention relates to the technical field of a wind power blade and a manufacturing method thereof, in particular to an anti-icing and deicing wind power blade and a manufacturing method thereof. Background technique [0002] In recent years, the energy crisis and environmental crisis have become increasingly serious, and wind energy, as an environmentally friendly renewable clean energy, has achieved unprecedented development. Because most of the regions with rich wind resources in my country are located in high latitude regions, the surface of wind turbine blades is prone to icing in winter. Icing on the surface of wind turbine blades will lead to a decrease in the operating efficiency of wind turbines, and in severe cases, it will force the wind turbines to shut down, and even cause safety accidents, which greatly increases the operating cost of wind power generation. Therefore, in a cold environment, how to prevent the surface of wind turbine b...

AI Technical Summary

Problems solved by technology

[0006] The internal heating method of the blade has a common disadvantage: since the wind turbine blade is generally made of glass fiber and the core material is made of FRP material formed by resin, the core material is usually made of polyvinyl chloride (PVC), polystyrene (PS), polyurethane (PUR), etc. Foam material, that is, the core material is a thermal insulation material, so the thermal conductivity of the shell-shaped wind turbine blade itself is relatively small, so in order to achieve the purpose of melting the ice on the outer surface of the wind turbine blade, the entire wind turbine blade must be heated by the heat in the internal cavity The outer surface of the wind turbine blade makes the overall temperature of the outer surface of the wind power blade reach above zero, which takes a long time and consumes a lot of energy. If the time is shortened by increasing the temperature of the air in the inner cavity, the energy consumption will be further increased.

In addition, if the internal cavity temperature is too high, there will be higher requirements for the transition temperature of the matrix resin required to make wind turbine blades, which may bring new problems, such as burning the wind turbine blades, and reducing safety.

And as the length of the wind power blade increases, the thickness of the core material will gradually increase, and the thermal conductivity of the wind power blade itself will gradually decrease, so the anti-icing effect is even less ideal for large wind power blades

[0007] In addition, for the internal heating method of the blade, since the heating resistor is required to bear large deformation and high-cycle fatigue damage together with the wind turbine blade, the traditional heating resistor often breaks during the operation of the wind turbine blade, which leads to local heating. The reduction or loss will also significantly reduce the deicing efficiency of wind turbine blades, and ultimately affect the deicing effect of wind turbine blades

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