Anti-icing wind turbine blade, and method for preventing wind turbine blade from icing

Abstract

The invention discloses an anti-icing wind turbine blade. Anti-icing box bodies are fixed to the inner surface of an anti-icing wind turbine blade body. The side wall of each anti-icing box body is connected with two pipes. Each of the two pipes is provided with a valve. The pipes are used for injecting high-density low-temperature-resistant liquid into the corresponding box bodies or dischargingthe high-density low-temperature-resistant liquid out of the box bodies. The multiple anti-icing box bodies are fixed to the inner surface of the wind turbine blade, all the pipes extend to the root part of the wind turbine blade, and the valves on all the pipes are arranged at the root part of the wind turbine blade. A separation plate is arranged inside each anti-icing box body, the separation plate is arranged perpendicular to the length direction of the wind turbine blade, and a plurality of damping holes are formed in the separation plate. The internal surface of each anti-icing box bodyand the external surface of each separation plate are both set to be rough surfaces. The invention further discloses a method for preventing the wind turbine blade from icing. According to the anti-icing wind turbine blade, and the method for preventing the wind turbine blade from icing, the liquid kinetic energy and thermal energy conversion principle is utilized, on the condition that a wind turbine generator does not stop, blade surfaces is continuously heated along with impeller rotation, the blade surfaces are prevented from icing, and the method is simple, convenient to carry out, practical and easy to operate.

Description

technical field [0001] The invention relates to the technical field of wind turbines, in particular to an anti-icing wind turbine blade and a method for preventing the wind turbine blade from icing. Background technique [0002] Wind power blades are an important part of wind turbines, and their unique aerodynamic shape plays a role in capturing wind power. When wind turbines operate at zero degrees Celsius or below zero, they will freeze if they encounter humid air, rain, salt spray, ice and snow, and freezing rain. After the wind power blades are covered with ice, not only the aerodynamic shape of the blades changes, which affects the power generation, but in severe cases, the blades will be broken due to ice overload. [0003] At present, in the wind power industry, the mainstream solutions for ice melting are as follows: 1) Use carbon fiber electric heating ice melting technology, add carbon fiber materials to the blade skin, and connect the power supply and controller....

AI Technical Summary

Problems solved by technology

But for large megawatt-scale wind turbine blades, this method of melting ice cannot achieve the technical effect of understanding

Moreover, the existing methods all need to be operated in the shutdown state of the wind turbine, which affects the power generation efficiency of the wind turbine.

[0004] This shows that above-mentioned existing wind power blade and the method for preventing icing of wind power blade still have inconvenience and defect, and urgently need to be further improved

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