High differential pressure resistance-type wind turbine

A wind turbine and resistance-type technology, applied in the field of wind energy applications, can solve problems such as low energy conversion efficiency and large rotation resistance

Inactive Publication Date: 2011-05-18
RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing resistance-type wind turbines have large rotational resistance, and need to overcome a large reverse torque, require a large wind speed to start, and the energy conversion efficiency is also low during operation.

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings. In this specification, the content description of the orientation is described according to the windward direction. The basic principles and structures of the present invention are also applicable to water turbines. Of course, when the present invention is applied in practice, it should also cooperate with adding such as force balance mechanism, typhoon prevention mechanism, orienting mechanism, etc., as the category of existing technology, this specification does not need to go into details.

[0015] figure 1 It is a schematic diagram of the principle and action of a preferred embodiment of the present invention, and it is an implementation mode for a vertical shaft wind turbine.

[0016] The vertical shaft wind turbine includes blades 11, 12, blade frames 21, 22, a rotating main shaft 3 and other components. Two blade frames 21 , 22 intersecting at right angles in s...

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Abstract

The invention provides a high differential pressure resistance-type wind turbine, comprising a rotary spindle. The rotary spindle is provided with blades. The high differential pressure resistance-type wind turbine is characterized in that the blades are movably arranged on the rotary spindle and the windward resistance is reduced by changing the position. Each blade faces the wind mainly at halfround pushed by wind and avoids the windward resistance by changing the position at the other half round, thereby greatly reducing the reverse torque caused by blades, improving the power of the windturbine and lowering the start wind speed of the wind turbine.

Description

technical field [0001] The invention relates to the field of wind energy applications, in particular to a resistance type wind turbine. Background technique [0002] At present, wind turbines for wind power generation are mainly divided into two types: vertical axis wind turbines and horizontal axis wind turbines. The vertical shaft wind turbine belongs to the resistance type wind turbine, mainly through the special design of the blade shape, so that when the wind blows on both sides of the main shaft, a forward and reverse torque difference is generated to drive the main shaft to rotate; during this process, the main shaft is driven to rotate by the positive torque , it is necessary to overcome the reverse torque caused by the same wind force. However, the existing resistance-type wind turbines have large rotational resistance, need to overcome a relatively large reverse torque, require a relatively high wind speed to start, and have low energy conversion efficiency during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/02F03D3/06
CPCY02E10/74
Inventor 杨建童刚
Owner RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN
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