Universal windmill with adjustable propeller length

Abstract

The invention provides a universal windmill with adjustable propeller length, and relates to the field of wind application equipment. The universal windmill comprises a support, propellers, propeller heads, a rotating shaft and propeller length control systems; two to four propellers are uniformly distributed around the rotating shaft; the cross sections of the propellers are provided with wing profiles in form of wings with camber; the propellers are obliquely arranged on the support by the propeller heads, so that a V-shaped structure can be formed; the gradient, eccentricity and mounting attack angle of each propeller can be adjusted by each propeller head, therefore, the propellers of the windmill can be kept in the best operating state; the propellers of the windmill are divided into two to three sections which are integrally nested and can be stretched and contracted just like a telescopic antenna of a radio receiver, therefore, the propellers can be contracted during high wind and stretched during low wind, and as a result, the output power or the rotating speed can be stabilized, the utilization scope of the wind energy is expanded, and the safety of the windmill in operation can be ensured. The application of the universal windmill is as follows: 1, the universal windmill can be used as a vertical axis wind turbine to be applied to a wind power plant; 2, the universal windmill also can be used as a water turbine to be applied to a dam-free power station or used for tidal power generation; and 3, the universal windmill also can be used as a toy for a child.

Description

technical field [0001] The invention relates to the field of wind power application equipment Background technique [0002] This invention is a newly proposed invention patent based on the invention patent universal windmill (patent number: ZL200310100459.0), after further in-depth analysis, a large number of experimental research, prototype testing, and structural improvement. [0003] Wind energy is a clean and renewable energy in nature. The available wind energy resource on the earth is 20 billion kW, which is 20 times that of the available water energy on the earth. The available wind energy at the 10m altitude in China is 253 million kW, the available wind energy at sea is three times that of the land, and the available wind energy at the 50m altitude is twice that at the 10m altitude. my country is very rich in wind energy resources, and Xinjiang, Inner Mongolia, and Gansu have the largest wind energy, with an intensity of about 200-300 W / m2 and an average of 4,000-...

AI Technical Summary

Problems solved by technology

The reason for this phenomenon is that the working state of the wind generator is closely related to the magnitude of the external wind force and cannot be actively controlled at all, which causes a gr

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