Device and method for avoiding stall caused by strong wind in vertical axis wind turbine

A wind turbine, vertical axis technology, applied in wind turbine components, control of wind turbines, wind turbines at right angles to the wind direction, etc., can solve problems such as generator stalls, broken blades, etc. Simple, secure results

Inactive Publication Date: 2011-11-23
GUANGZHOU YATU NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the technical problems to be solved by the present invention is to provide a device for vertical axis wind power generators to avoid stalls caused by strong winds. generator set safety
[00

Method used

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  • Device and method for avoiding stall caused by strong wind in vertical axis wind turbine
  • Device and method for avoiding stall caused by strong wind in vertical axis wind turbine
  • Device and method for avoiding stall caused by strong wind in vertical axis wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1As shown, a device for avoiding a stall caused by strong wind of a vertical axis wind power generator includes a tower column 1 and more than one power generation unit arranged on the tower column 1. In this embodiment, only one A power generation unit, the power generation unit includes a Φ-shaped blade group, an outer rotor generator 2 and a crane 4 .

[0039] Such as figure 2 As shown, the upper end of the Φ-shaped blade group is provided with a first bearing 5, the inner ring of the first bearing 5 is fixedly sleeved on the tower column 1, and the upper end of the Φ-shaped blade group is connected with the outer ring of the first bearing 5; The lower end of the group is provided with a second bearing 6, the inner ring of the second bearing 6 is fixedly sleeved on the tower column 1, the lower end of the blade group is connected with the outer ring of the second bearing 6, and the blade group is connected to the second bearing 6 through the first beari...

Embodiment 2

[0046] Such as Figure 4 As shown, a device for avoiding a stall caused by strong wind of a vertical axis wind power generator includes a tower column 1 and more than one power generation unit arranged on the tower column 1. In this embodiment, the tower column 1 is only provided with two A power generation unit arranged up and down, the power generation unit includes a Φ-shaped blade group, an outer rotor generator 2, and a crane 4.

[0047] Such as Figure 5 As shown, the upper end of the blade group is provided with a first bearing 5, the inner ring of the first bearing 5 is fixedly sleeved on the tower column 1, and the upper end of the blade group is connected with the outer ring of the first bearing 5; the lower end of the blade group is provided with a second Bearing 6, the inner ring of the second bearing 6 is fixedly sleeved on the tower column 1, the lower end of the blade group is connected to the outer ring of the second bearing 6, and the blade group is pivotally...

Embodiment 3

[0054] Such as Figure 7 As shown, a device for avoiding a stall caused by strong wind of a vertical axis wind power generator includes a tower column 1 and more than one power generation unit arranged on the tower column 1. In this embodiment, the tower column 1 is only provided with two A power generation unit arranged up and down, the power generation unit includes a Φ-shaped blade group, an outer rotor generator 2, and a crane 4.

[0055] Such as Figure 8 As shown, the upper end of the blade group is provided with a first bearing 5, the inner ring of the first bearing 5 is fixedly sleeved on the tower column 1, and the upper end of the blade group is connected with the outer ring of the first bearing 5; the lower end of the blade group is provided with a second Bearing 6, the inner ring of the second bearing 6 is fixedly sleeved on the tower column 1, the lower end of the blade group is connected to the outer ring of the second bearing 6, and the blade group is pivotally...

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Abstract

The invention discloses a device and a method for avoiding stall caused by strong wind in a vertical axis wind turbine. The tower is provided with more than one power generation unit, a crane is arranged at the top of the tower, and the crane is provided with a hook; the blade group comprises more than two blades, the blade is arc-shaped and consists of a chord and a corresponding arc, more than one support arm is arranged between the arc and the chord, the support arm is provided with a plurality of lugs hung by the hook, and more than two pulleys are arranged on the chord; tracks, the number of which is as same as that of the blades, are arranged in each power generation unit, wherein the tracks are synchronous with the blades, and sliding mechanisms consisting of the chords and the pulleys are in sliding fit with the tracks; both the upper end and the lower end of the blades are provided with male connecting mechanisms, female connecting mechanisms are arranged on the tracks corresponding to the upper ends and the lower ends of the blades, and the male connecting mechanisms are matched with the female connecting mechanisms; and in strong wind, the blades are hoisted to the ground sequentially from bottom to top through the crane. The device and the method are safe and reliable.

Description

technical field [0001] The invention relates to a vertical axis wind power generator, in particular to a device and a method capable of causing the generator to stall due to strong wind. Background technique [0002] The main function of the wind turbine brake mechanism has two aspects: one is to fix the blades of the wind turbine when the equipment is overhauled, and the other is to avoid damage to the wind turbine when the wind is particularly strong or typhoon. Fixed and not rotated. The braking methods of existing wind-driven generators mainly include mechanical braking mechanisms and pitch-variable braking systems. The mechanical braking mechanism is generally a hydraulic braking mechanism composed of a brake disc, a brake block and a hydraulic control device. The brake disc of this type of braking mechanism is fixed on the main shaft of the motor unit, and the brake block is controlled by the hydraulic control device. When encountering a particularly strong wind or t...

Claims

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Application Information

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IPC IPC(8): F03D11/00B66C23/18F03D3/06F03D9/00
CPCF03D3/062Y02E10/728F05B2270/107B66C23/207Y02E10/74Y02E10/72F03D3/02F03D7/06F05B2240/916
Inventor 邓允河
Owner GUANGZHOU YATU NEW ENERGY TECH
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