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Full-choked-flow breeze wind turbine technology

A technology of wind turbines and breeze, applied in the direction of wind turbines, wind turbines aligned with the wind direction, motors, etc., which can solve problems such as poor performance

Pending Publication Date: 2021-03-02
郭鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] Traditional horizontal axis lift wind turbines have problems such as poor performance in low wind speed environments

Method used

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  • Full-choked-flow breeze wind turbine technology
  • Full-choked-flow breeze wind turbine technology
  • Full-choked-flow breeze wind turbine technology

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0108] According to the design requirements, wind turbines can be divided into active wind turbines and passive wind turbines. The active facing wind turbine can use the motor to drive the impeller to actively find the wind direction to face the wind. When encountering strong wind, it can also yaw the impeller to resist strong wind. Passive wind turbines need to rely on wind force to adjust the direction of the impellers to face the wind. Specific embodiment 1 is a passive wind turbine.

[0109] Wind turbines can be divided into small wind turbines, medium wind turbines, large wind turbines, and ultra-large wind turbines according to the size of the impeller and power. The wind turbine described in Embodiment 1 is a small foldable wind turbine. The advantage of the small foldable wind turbine is that the structure of the impeller of the wind turbine is similar to that of a folding umbrella. The utility model has the advantages of simple structure, convenient assembly and di...

specific Embodiment 2

[0122] The specific embodiment 2 is an active wind-facing wind turbine, and the angle of the wind turbine is controlled by an electric motor to operate against the wind.

[0123] Specific embodiment 2 adopts the design that the diameter of the impeller is 8 meters, the width of the guide vane is 1.6 meters, the circumference of the impeller is 25 meters, and the area of ​​the impeller is about 50 square meters.

[0124] according to Figure 5 It can be seen from the table that when the wind turbine impeller in the specific embodiment 2 has a wind speed of 3 meters per second (level 2 wind), the mass of the airflow passing through the impeller range per second is about 194 kg. When the wind speed reaches 10 meters per second (level 5 wind), the mass of air passing through the range of the impeller is about 647 kilograms per second. When the wind speed reaches 30 meters per second (level 11 wind), the mass of air passing through the range of the impeller is about 1942 kilograms...

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Abstract

The Betz' Law is a basic theory in the field of recent wind power generation, but some errors exist in the derivation process of the Betz' Law; error 1: an "ideal wind wheel" structure is assumed according to the Betz' Law, but only the acting force of airflow on the ideal wind wheel is considered in the theoretical derivation process, the reacting force of the ideal wind wheel on the airflow is not considered, so that the derivation result does not accord with the objective fact; error 2: based on the Bernoulli's theorem, it can be known that the diameter of a flow pipe becomes smaller, the flow speed of fluid is increased, the area of wind turbine blades is enlarged to be equal to the decrease of the diameter of the airflow flow pipe, so that the larger the area of the wind turbine blades is, the higher the airflow speed influenced by the impeller is; the influence of the ideal wind wheel on the flow velocity, the flow direction and the like of the airflow is not considered in the derivation process of the Betz' Law, so that the derived result does not accord with the objective fact; and because of the errors, the invention jumps out of the category of the Betz' Law, and a full-choked-flow breeze wind turbine technology is redesigned based on the concept of "ideal wind wheel".

Description

technical field [0001] The invention belongs to the discipline of fluid mechanics and the field of wind energy utilization. Specifically, it is a kind of total resistance flow type breeze wind machine technology designed based on the ideal wind wheel concept proposed in Bates theory; the invention is a kind of application of Bernoulli theorem With the leverage effect, the pressure difference resistance between the windward side of the impeller and the leeward side of the impeller is used to accelerate the air flow, and generate a diffuse wake flow field behind the ideal wind wheel, thereby driving the impeller to rotate and driving the equipment to do work; wind turbine refers to the technology that includes Wind power generation, wind water pumping, wind grinding, wind-driven water aeration, wind-driven compressors and many other related technologies that directly or indirectly use wind energy. Background technique [0002] Wind energy is a green, environmentally friendly a...

Claims

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Application Information

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IPC IPC(8): F03D1/06
CPCF03D1/0608F03D1/065Y02E10/72
Inventor 郭鹏
Owner 郭鹏
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