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Balanced vertical-axis large wind power generation unit

A wind turbine, vertical axis technology, applied to wind turbine components, wind motor combinations, wind engines, etc., can solve problems such as increased cost, small starting torque, skewed blades, etc.

Active Publication Date: 2013-05-08
徐州泰铭电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The wind energy utilization rate of the lift type vertical axis wind turbine can be as high as 42% during normal operation, but it has the following defects: in the low wind speed state, the force bearing area is small, and the starting torque generated is small, and it usually needs to be started under natural conditions. The start can only be achieved by the wind drive of four or more winds, so that for large and medium-sized wind turbines, it is usually necessary to equip a motor auxiliary starting device to force the start, which makes the structure of the whole machine complex and the cost increases; and in low wind gusts The power consumption is relatively large
[0008] However, the above-mentioned patents have the following problems: if the centrifugal force imbalance occurs during the movement of the lift-type blades, it is easy to cause the blades to be skewed and twisted; The material consumption of wind turbines is large, the overall manufacturing cost is high, and it is not easy to maintain, which is not conducive to industrial production and the promotion and application of large wind turbines in the market

Method used

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Embodiment 1

[0050] A kind of balanced type vertical axis large-scale wind power generating set of the present invention, such as figure 1 with figure 2 As shown, it includes a permanent magnet generator 12 and a blade drive assembly. The blade drive assembly includes a wind rotor group and a vertical vertical axis rotation system. The wind rotor group is provided with two or more lift-type blades 3 and corresponding Two or more sets of blade supports are provided, and the blade supports include an upper support 1, a middle support 4 and a lower support 7, wherein:

[0051] The vertical vertical axis rotation system is provided with an upper column 2, a lower column 8 and a central rotary axis mechanism;

[0052] The central rotary shaft mechanism is provided with a central shaft 5 and a universal coupling 9. The central shaft 5 is supported in the lower column 8 through bearing support, and the upper end of the central shaft 5 is connected with the upper column 2, and the lower end of t...

Embodiment 2

[0065] A kind of balanced type vertical axis wind power generating set of the present invention, as figure 1 As shown, the main technical solutions of this embodiment are basically the same as those of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is that: the upper and / or lower parts of the lift blades 3 are provided with extensions 14 . The top and / or the bottom of the lift type blade 3 all increase the extension 14, which can improve the wind-bearing area of ​​the lift type blade 3 and improve the power generation efficiency. Especially the bottom of the lift type blade 3 is provided with an extension 14, which can make the lift The center of gravity of the type blade 3 is lowered, which effectively improves the anti-swing capability of the wind power generating set and makes the operation more stable.

[0066] Specifically, both the upper...

Embodiment 3

[0070] A kind of balanced type vertical axis wind power generating set of the present invention, as figure 1 As shown, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here. . The difference between this embodiment and embodiment 1 or embodiment 2 is that the thickness of the middle bracket 4 is greater than or equal to the thickness of the upper bracket 1 and / or the thickness of the lower bracket 7 .

[0071] Specifically, the thickness of the upper bracket 1 and the thickness of the lower bracket 7 can be set to be the same, and the thickness of the middle bracket 4 is set to be 1.5 to 2.5 times the thickness of the upper bracket 1 or the thickness of the lower bracket 7 . Since the middle bracket 4 plays a major load-bearing role, the thicker thickness of the middle bracket 4 can make the load...

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Abstract

The invention discloses a balanced vertical-axis large wind power generation unit. The balanced vertical-axis large wind power generation unit comprises a permanent magnet generator, a wind wheel group and a vertical-axis rotary system, wherein the wind wheel group comprises lift type blades as well as upper supports, intermediate supports and lower supports which are opposite, and the vertical-axis rotary system is provided with an upper post, a lower post, and a central rotary shaft mechanism which is provided with a central shaft and a universal coupling; the central shaft passes through the lower post through a bearing, the upper end of the central shaft is connected with the upper post, the lower end of the central shaft is connected with one end of the universal coupling, the other end of the universal coupling is connected with a rotating shaft of the permanent magnet generator in a driving way, and a machine base of the permanent magnet generator and the lower post are fixed on a base; the upper post is provided with a first connecting piece, and one end of each upper support is fixedly connected with the first connecting piece and the other end of each upper support is fixedly connected with the upper part of one lift type blade; one end of each intermediate support is connected with the upper end of the central shaft and the other end of each intermediate support is fixedly connected with the middle part of one lift type blade; and one end of each lower support is connected with the central shaft through a second connecting piece and the other end of each lower support is fixedly connected with the lower part of one lift type blade. The stability and balance can be improved, the structure can be simplified, the strength can be increased, materials and cost can be reduced, and the balanced vertical-axis large wind power generation unit is easy to maintain.

Description

technical field [0001] The invention relates to the technology of a vertical-axis wind power generating set, in particular to a balanced vertical-axis large-scale wind power generating set. Background technique [0002] Wind power generation has a history of more than 150 years. After analyzing the atmospheric circulation model, scientists found that the wind energy contained in the convective air masses in the lower atmosphere is very huge, which is inexhaustible and available to human beings. One of the exhausted renewable energy sources. Therefore, under the situation that human beings are facing the energy crisis that is gradually intensified, the research and development of wind power generation has more and more important and far-reaching practical significance. In some developed countries, such as the United States, the Netherlands, Denmark, France, Germany, Italy and other countries, wind power has played a pivotal role in their domestic power structure. In my coun...

Claims

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Application Information

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IPC IPC(8): F03D9/00F03D3/06F03D11/00H02K7/18
CPCH02K7/183F03D3/065H02K7/18F03D9/00F05B2240/214F05B2220/706F03D3/06F03D3/005F03D11/00Y02E10/74F03D3/062
Inventor 刘少忠张维智
Owner 徐州泰铭电气有限公司
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