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Method for avoiding stall caused by strong wind in vertical axis wind turbine

A wind turbine, vertical axis technology, applied in the direction of wind turbine components, wind engines, wind engines at right angles to the wind direction, etc., can solve the problems of broken, stalled blades, etc.

Inactive Publication Date: 2013-07-03
GUANGZHOU YATU NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for avoiding the stall caused by strong wind of the vertical axis wind power generator. Machine 2 Security

Method used

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  • Method for avoiding stall caused by strong wind in vertical axis wind turbine
  • Method for avoiding stall caused by strong wind in vertical axis wind turbine
  • Method for avoiding stall caused by strong wind in vertical axis wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like figure 1 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, 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 .

[0028] like figure 2 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 with the outer ring of the second bearing 6, and the blade group is connected to the outer ring of the first bearing 5 and the second beari...

Embodiment 2

[0034] like Figure 4As 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, which includes a Φ-shaped blade group, an outer rotor generator 2, and a crane 4.

[0035] like 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 with the outer ring of the second bearing 6, and the blade group is connected to the outer ring of the first bearing 5 and ...

Embodiment 3

[0041] like 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, which includes a Φ-shaped blade group, an outer rotor generator 2, and a crane 4.

[0042] like 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 through a connecting flange 8; the blade group The lower end is provided with a second upper bearing 6a, the inner ring of the second upper bearing 6a is fixedly sleeved on the tower column 1, the lower end of the blade group is connected with the outer ring of the second upper bearing 6a through the connecting flange ...

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Abstract

The invention discloses 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, and the support arm is provided with a plurality of lugs hung by the hook; both the upper end and the lower end of the blades are provided with male connecting mechanisms, female connecting mechanisms are arranged on 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 method is simple in operation, can solve the problems of stall of the generator set and breakage of the blades in ultra strong wind or typhoon, and ensures the safety of the generator set.

Description

technical field [0001] The invention relates to a vertical axis wind power generator, especially 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 2 during equipment maintenance, and the other is to avoid damage to the wind turbine 2 when the wind is particularly strong or typhoon. The blades of 2 are fixed and do not rotate. 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 particularly strong wind or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D9/00F03D3/06F03D11/00B66C23/16
CPCY02E10/74
Inventor 邓允河
Owner GUANGZHOU YATU NEW ENERGY TECH
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