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Wind sail-opened vertical short axis large-scale wind turbine generator

A technology for wind turbines and sails, which is applied to wind turbines, wind turbines, and combinations of wind turbines at right angles to the wind direction, can solve the problems of large negative power value of S blades, low fan power coefficient, and expensive machines. The effect of improving the quality of wind power, reducing the friction force of the wind turbine system, and reducing the negative power

Inactive Publication Date: 2010-12-22
TIANJIN JINHANYU TECH DEV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The three-blade horizontal axis wind turbine has problems such as the wind does not turn, the machine is expensive and the machine is noisy:
[0018] 1. When the S-blade wind wheel rotates to the upwind side, the negative work value of the S-blade is very large, and the power coefficient of the fan is low
[0019] 2. Not suitable for large wind turbines

Method used

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  • Wind sail-opened vertical short axis large-scale wind turbine generator
  • Wind sail-opened vertical short axis large-scale wind turbine generator
  • Wind sail-opened vertical short axis large-scale wind turbine generator

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Embodiment Construction

[0106] 1. Theoretical comparative analysis of the sail vertical short axis wind turbine and the blade horizontal axis wind turbine of the present invention.

[0107] ①Aerodynamic analysis and calculation of three-blade horizontal axis wind turbine:

[0108] The blade horizontal axis wind turbine is based on the energy conversion principle of the turbine blade machine. The blade is a lift-type wing. Only when the blade is rotating at a high speed can the energy conversion utilization rate be improved.

[0109] The calculation basis of the horizontal axis blade wind turbine is as follows:

[0110] Cp 1 =P 1 / Po

[0111] P 1 =1 / 2ρAVw 3 Cp 1

[0112] Cp 1 =f(λ)

[0113] Cp 1 -Wind rotor blade power coefficient, theoretical maximum power utilization coefficient: Cp 1 = 59.3%.

[0114] λ-high-speed characteristic parameters of the wind rotor, λ=blade tip linear speed / wind speed, when the value of λ increases, Cp 1 Approaching 59.3%.

[0115] P 1 - Actual power of bla...

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Abstract

The invention relates to a wind sail-opened vertical short axis large-scale wind turbine generator, which belongs to the technical field of green energy. The invention aims at solving the technical problems of too large start wind speed (a fan is in a stopped state at most of the time), expensiveness and running noise of a machine and the like of the existing horizontal axis blade wind turbine. The technical proposal adopts a principle that wind sails capture wind energy to solve the above problems. The wind sail-opened vertical short axis large-scale wind turbine generator comprises a tower frame, a rotating tower (a vertical short axis), multiple layers of cross wind sails that can be opened and closed, wind sail beams and the like. The multiple layers of the wind sails on the rotating tower are opened sequentially automatically at a windward side and are closed sequentially at an upwind side, thus enabling the rotating tower to rotate continuously and stably, kinetic energy is transmitted to a variable speed constant frequency generator through a gear and a chain, and the generated electrical energy is merged into a power grid; and the wind sails consist of weather resistant medium-alkali glass fiber clothes and thin-wall light steel frames, the multiple layers of the opened wind sails have a large area, are in the shape of a concave semi-cylinder, and can be opened in light wind, the noise is low when the machine runs, and the manufacturing cost is greatly reduced.

Description

Technical field: [0001] The invention belongs to the technical field of new energy, and relates to the technology of a large-scale wind turbine for power generation, in particular to a large-scale vertical-axis resistance wind turbine. Background technique: [0002] People have been pursuing clean energy for many years, especially the large-scale application technology of wind power generation, but there are deficiencies in the existing wind power generation technology: [0003] 1. The three-blade horizontal axis wind turbine has problems such as the wind does not turn, the machine is expensive and the machine is noisy: [0004] The horizontal-axis three-blade wind turbine has been used for commercial power generation in the world for about 40 years, and has become a classic model of wind turbines. Horizontal axis blade wind turbine is actually a form of turbine blade machine. The horizontal axis fan expects the blade rotor to have a higher speed. When the λ value is highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/00F03D3/00F03D3/06
CPCY02E10/74Y02P70/50
Inventor 王亿理王福玲李桂发
Owner TIANJIN JINHANYU TECH DEV
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