Universal windmill with adjustable paddle length

Abstract

The invention is called a universal windmill with adjustable paddle length, and relates to the field of wind power application equipment. The windmill is composed of bracket, paddle, paddle head, shaft, paddle length control system and so on. 2 to 4 blades are evenly distributed around the rotating shaft. The airfoil of the cross section of the blade is a curved airfoil, which is obliquely installed on the bracket through the blade head to form a V-shaped structure. The inclination of the blade, The eccentricity and the installation angle of attack can be adjusted through the blade head, so that the windmill blades are in the best working condition; because the windmill blades are made of 2 to 3 sections, they are nested together like radio receiver rod antennas It is stretchable and retractable, so that the blades can be shortened when the wind is strong, and elongated when the wind is small, which stabilizes the output power or speed, increases the range of wind energy utilization, and ensures the safe operation of the windmill. The application of the universal windmill with adjustable propeller length is as follows: 1. It can be used as a vertical axis wind turbine for wind power plants; 2. It can also be made into a water turbine for power stations without dams or tidal power generation; 3. It can be used as into children's toys.

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 great waste of power generation equipment and keeps the cost of wind power at a high level

Its safety is only achieved by combining materials and equipment, and there are few reliable technical guarantees.

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