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Large variable-pitch-type vertical axis wind turbine generator system

A wind turbine, vertical axis technology, applied in wind turbine components, wind turbine combinations, wind turbines, etc., can solve the problems of complex structure, large generator output power, difficult vertical generator overall stability, etc.

Inactive Publication Date: 2014-05-21
刘录英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, no matter the vertical axis wind turbines of resistance type or lift type generally have the following defects: the starting torque is small, the structure is complicated, and when the wind is strong, the frontal area of ​​the wind rotor and the force are large, so that the output power of the generator is too high. Large, it is easy to cause the motor to exceed the rated generating power and be damaged
However, the vertical flexible wind wheel is difficult to ensure the overall stability of the vertical generator, and the vibration is relatively large, and the ability to resist strong winds needs to be further improved, and the problem of narrow applicable wind speed range also needs to be further solved

Method used

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Experimental program
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Effect test

Embodiment 1

[0059] A kind of large-scale variable-pitch type vertical axis wind power generating set of the present invention, such as Figure 1 to Figure 3As shown, it includes a generator 1 and a tower 25, and also includes and is provided with a transmission system, a bracket mechanism and a hinge mechanism. The wind wheel includes two sets of symmetrical fan blade units, each group of fan blade units includes fan blades 23, connecting rods 24 and more than three struts 21 arranged parallel to each other, wherein the number of struts 21 can be appropriately increased according to actual needs. Minus, can be two, four or more than four. One end of the strut 21 is fixedly connected with the connecting rod 24, and the other end of the vane 23 and the strut 21 is hinged through a pin shaft and a spring connecting rod device. The upper surface and the lower surface of the strut 21. When the wind pushes and rotates, the fan blade 23 rotates around the pin shaft under the action of centrifu...

Embodiment 2

[0084] A large-scale variable-pitch vertical-axis wind power generation unit of the present invention is basically the same as the main technical solution of Embodiment 1. In this embodiment, the wind rotor is provided with three groups of uniformly distributed blade units, which are adjacent to each other in the vertical projection direction. The included angles of the two fan blade units are equal. The number of struts 21 of each group of fan blade units is set to three, and this structure has high stability and high comprehensive performance. But it should be noted that the number of fan blade units in the present invention is not limited to three groups, it may be four groups, five groups, six groups or other numbers.

[0085] The main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here.

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Abstract

The invention provides a large variable-pitch-type vertical axis wind turbine generator system. A wind wheel comprises at least two fan blade units which are evenly distributed. A drive system comprises a fixed column, a bearing, a rotary sleeve shaft and a transmission shaft. The fan blade units are hinged to a support mechanism through hinge devices. The vertical state of the fan blade units are maintained in a rated wind speed range so that the maximum windward area can be obtained. With increasing of the rotation speed of the wind wheel, the fan blade units rise and rotate around a second upper connecting rod assembly and relative to the second upper connecting rod assembly to be in a suspended and whirling state. The whole wind wheel rotates around the central axis of the wind wheel like a rotating top. The better the stability is, the more stable the output power is. Meanwhile, spring assemblies are located below the hinge devices and can assist in adjusting the included angle between fulcrum bars and the horizontal plane and buffering vibration caused by unbalanced wind pressure exerted on the fan blade units. The large variable-pitch-type vertical axis wind turbine generator system has the advantages of being simple in structure, good in strong wind resistance capacity, low in noise, wide in applicable wind speed range, high in stability and the like.

Description

Technical field [0001] The present invention involves the technology field of vertical axis wind power generation units, especially a large -scale paddle -type vertical axis wind turbine group. Background technique [0002] In existing technologies, vertical axis wind turbines are mainly divided into two types: resistance and lift.The resistance vertical axis wind turbine mainly uses the resistance difference generated by the air flowing through the blades as a driving force, while the lift type uses the lift generated by the air flowing through the blades as the driving force.During the rotation process of the blades, as the speed increases the resistance, the lift will increase, so the efficiency of the lift -type vertical axis wind turbine is much higher than the resistance type.However, at present, regardless of the resistance type or lift -type vertical axis wind turbine, the following defects are generally existed: small starting torque, complex structure, and high wind whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/00F03D3/06F03D11/02F03D7/06
CPCY02E10/74
Inventor 丑帅军刘湘威黄耀
Owner 刘录英
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