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Multi-wing collecting vane capable of utilizing wind power efficiently

A blade and flow collection technology, which is applied in wind power generation, wind power generators in line with the wind direction, and wind power generators at right angles to the wind direction. effects

Active Publication Date: 2012-09-12
李亦博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-wing blades composed of these airfoils cannot improve the efficiency of wind energy utilization because they have no flow collection effect, which is also one of the reasons for the poor performance of the single-wing blades in the low-to-medium wind speed range.

Method used

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  • Multi-wing collecting vane capable of utilizing wind power efficiently
  • Multi-wing collecting vane capable of utilizing wind power efficiently
  • Multi-wing collecting vane capable of utilizing wind power efficiently

Examples

Experimental program
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Effect test

Embodiment Construction

[0044] The multi-blade collector blade for efficient utilization of wind energy provided by the present invention includes at least two wings and a domain formed between at least one adjacent wing, and by designing the shape of each of the wings and the domain, the relative The adjacent wings produce a concentrating effect on the fluid flowing through the domain therebetween, and by setting the relative orientation between the adjacent wings to enhance the concentrating effect and increase the fluid flow through the domain Kinetic energy and improve the lift of the wing behind the domain, thereby improving the wind energy utilization coefficient Cp of the multi-blade blade as a whole; Each of said wings and said domain must be shaped such that fluid flowing through said domain flows tangentially to the upper surface of the adjacent wing behind said domain, such that said domain must be shaped by the rear of its preceding adjacent wing. The space between the concave surface and...

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Abstract

The invention discloses a multi-wing collecting vane capable of utilizing wind power efficiently, comprising at least two wings and at least one zone formed between the adjacent wings. By designing the shape of each wing and the shape of the zone, the adjacent wings is enabled to generate a collecting effect on the fluid flowing through the zone between the adjacent wings, the zone is the space formed by the rear concave surface of front adjacent wings and the front convex surface of rear adjacent wings, and the rear concave surface and the front adjacent wings and the front convex surface of the rear adjacent wings are upward and front-biased; the relative direction of the adjacent wings is arranged for enhancing the collecting effect, the kinetic energy of the fluid flowing through the zone is increased, so the lifting force of the adjacent rings in the rear of the zone is improved, and the rotor power coefficient of the whole multi-wing collecting vane formed by the wings and the zones is accordingly improved. The multi-wing collecting vane capable of utilizing wind power efficiently makes full use of the Bernoulli effect and is more reasonable in design.

Description

technical field [0001] The invention belongs to the technical field of wind turbines (also known as windmills or fans), and in particular relates to a wind turbine blade capable of efficiently utilizing wind energy. Background technique [0002] The wind energy utilization coefficient of the blade (expressed as Cp, also known as wind energy utilization efficiency) is the embodiment of the performance of the blade. The Cp of the blade is related to the lift generated by the air flowing through the blade airfoil, and the lift generated by the airfoil is determined by the streamlined shape of the airfoil. Determined, therefore the Cp performance of the blade is determined by the shape of the airfoil it constitutes. Improving the Cp of blades is the most fundamental technology in the development of high-performance wind power technology. The blades of the existing wind power generation products are all single blades, and the airfoils of the blades include NACA series for aircra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D3/06
CPCF03D1/0641Y02E10/72
Inventor 李锋李宏春周宇程钰
Owner 李亦博
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