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Method for improving wind power utilization of vertical axis wind turbine blade by using guide strip technology

A technology of wind turbine blades and guide strips is applied to wind turbines, wind turbines, motors and other directions at right angles to the wind direction. The effect of increasing the tangential force

Inactive Publication Date: 2015-11-11
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current lift-drag hybrid type drag and lift are separated, and there is no good combination, which will inevitably cause mutual influence, resulting in low overall performance.

Method used

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  • Method for improving wind power utilization of vertical axis wind turbine blade by using guide strip technology
  • Method for improving wind power utilization of vertical axis wind turbine blade by using guide strip technology
  • Method for improving wind power utilization of vertical axis wind turbine blade by using guide strip technology

Examples

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Embodiment

[0015] Such as Figure 1-Figure 4 Shown: The vertical axis wind turbine blade uses the guide strip technology to improve the utilization of wind energy. On the vertical axis wind turbine blade 1, a guide strip is installed along the span direction of the blade 1 at 20%, 40%, 60%, and 80%. 2. The symmetrical airfoil 0018 is selected as the experimental airfoil with a chord length of 100mm. Blade 1 adopts wooden to make, for preventing that blade 1 rotation intensity is not enough. Embedded metal steel components are designed inside the blade 1, 3 pieces are embedded in each blade, and the steel parts of each blade are in the same position to avoid unbalanced rotation of the fan. The blade 1 plus the guide bar 2 ensures that the original aerodynamic shape of the airfoil will not be changed. The height of the diversion strip 2 is 3mm, the thickness is 1mm, and the offset distance S is 6mm. The diversion strip 2 is pasted on the blade 1 in any arc transition from point A to poi...

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Abstract

The invention discloses a method for improving wind power utilization of vertical axis wind turbine blade by using a guide strip technology. One guide strip is mounted on each of positions, which are located at 20%, 40%, 60% and 80% of the vertical axis wind turbine blade in a blade stretching direction. Height of the guide strips is 3% of blade chord length and thickness of the guide strips is 1% of the blade chord length. The guide strips extend to the blade tail edge from the blade front edge; and an offset distance front the front point positions of the front edges of the guide strips to final points of the tail edges of the guide strips is 6% of the blade chord length. The method has the effects and beneficial effects that: a flow-through path of airflow of the wind turbine blade is controlled by adopting the blade guide strip technology, so that angles that the airflow enters and leaves the blade are changed, thereby increasing lifting force of the blade and increasing tangential force of the blade simultaneously. The method has the advantages of reducing starting wind velocity of a fan, improving a wind energy utilization coefficient, and the like.

Description

technical field [0001] The invention relates to a method for improving the utilization of wind energy, in particular to a method for improving the utilization of wind energy by using the deflector technology on the blades of a vertical axis wind turbine, and belongs to the technical field of wind power generation. Background technique [0002] With the increasingly prominent environmental and energy issues, the development and utilization of renewable energy has been paid attention to by countries all over the world. Wind energy occupies a large proportion in the utilization of renewable energy, and wind power generation, as the main form of wind energy utilization, has received more and more attention. Modern large-scale wind turbines for grid-connected operation are mostly horizontal-axis wind turbines, and the technology is already very mature. The earliest form of utilization of wind energy is the vertical axis windmill, but the vertical axis wind turbine appeared later...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74
Inventor 李国文齐亚丹
Owner SHENYANG AEROSPACE UNIVERSITY
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