Offset vertical axis wind turbine with limited rotation of blades

Abstract

The invention discloses a setover-type vertical-shaft wind machine capable of limiting rotating of blades, which comprises a tower frame and a wind wheel, wherein the wind wheel comprises a main shaft, lightweight blades, blade shaft brackets and blade shafts; the main shaft is mounted on the tower frame vertically, and can rotate freely; the blade shaft brackets are uniformly fixed on the main shaft radially; the blade shafts are vertically mounted at the both ends of the blade shaft brackets respectively; and the lightweight blades are fixedly mounted on the blade shafts, so that the lightweight blades can revolve relative to the blade shaft brackets, and the angle of revolution is 0-90 degrees. According to the wind machine, the solidity of the wind wheel is high; the wind blocking areas of the lightweight blades are increased; the solidity of the wind wheel is improved; the utilization factor of the wind energy is large; the rotating torque is increased; and power generating capacity is high. The wind wheel is small in starting wind speed; breeze power generating capacity is strong; the starting wind speed is low; when the resistance and the friction of a power generator are ignored, the starting wind speed is lower than 1m / s; the wind machine is suitable for wide regions; and the operating time proportion is high.

Description

technical field [0001] The invention relates to an offset vertical-axis wind turbine, in particular to an offset vertical-axis wind turbine with limited rotation of blades. Background technique [0002] Today, non-renewable energy sources such as oil, coal, and natural gas are facing depletion of reserves, rising prices, and even serious pollution of the earth's environment. The danger of nuclear fission power generation is high, and nuclear waste pollutes the environment and is difficult to deal with; it is not yet feasible to use nuclear fusion energy to generate electricity. However, solar energy and wind energy are renewable energy sources that do not pollute the environment. Therefore, all countries are vigorously developing clean and renewable energy represented by wind energy and solar energy. [0003] In the current field of wind energy utilization, most of the existing wind turbines with large installed capacity are mostly in standby or shutdown state, and the uti...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the high start-up wind speed of existing fans, the low solidity of the wind rotor, the small wind energy utilization coefficient, the fixed airfoil and torsion angle of the wind rotor blades and the inability to adapt to different wind speeds, the power consumption of driving rotation, and the cost of adjusting the blade position Due to the shortcomings of electric drive motor rotation and unreliable reset, the invention provides an offset vertical axis wind turbine with limited rotation of blades, which further improves the solidity.

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