High-performance wind turbine blade with ring wing on blade tip

Abstract

The invention discloses a high-performance wind turbine blade with a ring wing on a blade tip and belongs to the technical field of wind power generation. The high-performance wind turbine blade is installed on a wind turbine hub and comprises a blade root, a blade root shaft, a blade body and the blade tip ring wing; and the blade tip ring wing is a closed ring formed by extension and bending of a blade plate block at the blade tip. Such an aerodynamic construction is a more advanced flow control measure and can weaken an air flow in the wingspan direction, generated on the surface of a blade of a wind wheel rotor, namely, effectively prevents an air flow on the pressure facing surface of the wind turbine blade from flowing toward the suction facing surface of the blade bypassing the blade tip ring wing, so that the induced drag at the blade tip is greatly weakened, and the efficiency of the wind wheel rotor of capturing wind energy is greatly improved (discovered in hundreds of tests, the efficiency is higher than that of a similar blade in the prior art by above 26 percent); and meanwhile, the aerodynamic construction is also very quieter. The high-performance wind turbine blade is mainly applied to a small-sized breeze power generator and can effectively develop breeze energy resources with high occurrence frequency and wide distribution on the earth.

Description

technical field [0001] The invention relates to a high-performance wind turbine blade with a ring wing at the blade tip, and belongs to the technical field of wind power generation. Background technique [0002] As the world's energy crisis becomes more and more serious, and the public's call for improving the ecological environment is increasing, wind energy is an inexhaustible energy source, and wind energy, as a clean and renewable energy source, is increasingly popular in various countries. government's attention. Wind turbines are the best way to utilize wind energy. At present, wind farms around the world mainly use horizontal axis wind turbines that combine high efficiency, low cost, and high benefits to generate electricity. [0003] In order to improve the overall wind energy capture efficiency of the horizontal axis wind turbine, the key point is to improve the performance of the wind turbine blades. There are many ways to improve the performance of the blades, su...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to scientifically and rationally improve the aerodynamic layout structure of the wind turbine rotor blades, improve the wind energy capture efficiency of the wind turbine blades, and make the wind turbine rotor blades of the present invention produce less induced resistance than the blades of the prior art , greatly widen the wind speed range when the rotor blades of the wind turbine capture wind energy (for example: apply the present invention, the breeze can also run to generate power), and the noise generated is less; thereby improving the utilization rate of wind energy and improving the quality of wind energy utilization

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