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Blade hoisting auxiliary structure for wind driven generator, system and hoisting method

A technology for wind turbines and auxiliary structures, which is applied in the assembly of wind turbines, transportation of wind turbines, and wind power generation, etc., can solve the problems of increasing the safety risk of on-site construction and increasing the difficulty of hoisting, so as to solve the difficulties of hoisting, reduce the difficulty, and reduce the The effect of labor

Inactive Publication Date: 2020-12-18
XINJIANG GOLDWIND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the usual way of installing blades for direct drive units is: a single blade is inclined at an angle of 30° or vertically inserted into the hub or removed from the hub, which undoubtedly increases the difficulty of hoisting and increases the safety risk of on-site construction.

Method used

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  • Blade hoisting auxiliary structure for wind driven generator, system and hoisting method
  • Blade hoisting auxiliary structure for wind driven generator, system and hoisting method
  • Blade hoisting auxiliary structure for wind driven generator, system and hoisting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] like image 3 As shown, the wheel hub 100 can be hoisted to the position of the nacelle and installed, at this time, a connecting flange of the wheel hub 100 can be located in a vertical position. Then, the wheel hub 100 can be rotated, for example but not limited to, the wheel hub 100 can be rotated 30° clockwise and then locked, and the rotation process can be performed by means of internal or external cranking. Afterwards, the blade 200 can be hoisted horizontally and inserted horizontally onto the connecting flange at the horizontal position. Then, the hub 100 is unlocked. At this time, due to the gravity of the installed blade 200, the hub 100 will rotate clockwise until the other connecting flange is in a horizontal position. For example, but not limited to, the hub 100 can be clockwise during this process. The direction is rotated by 60°, at this time, the hub 100 can be locked again, and the second blade 200 can be hoisted horizontally, so that the blade 200 ca...

Embodiment 2

[0079] refer to Figure 4 , the difference between this embodiment and Embodiment 1 is that after the second blade 200 is fixed on the hub 100, the hub 100 can be unlocked first, and under the action of the torque of the two blades 200, the hub 100 will Rotate counterclockwise, for example but not limited to, rotate the hub 100 counterclockwise by 30°, the connecting flange in the vacant state will be in a vertical position, at this time the hub 100 can be locked for subsequent installation of the blade lifting auxiliary structure 300. Then, the blade lifting auxiliary structure 300 can be hoisted horizontally, the first included angle between the first beam 301 and the horizontal section 302 of the blade lifting auxiliary structure 300 can be 90°, and the blade lifting auxiliary structure 300 can be moved to a suitable position until the first The first end of a beam 301 is docked with the connecting flange in a vacant state. In this state, the blade lifting auxiliary structu...

Embodiment 3

[0082] refer to Figure 5 , the difference between this embodiment and Embodiment 1 is that after the second blade 200 is fixed on the hub 100, the hub 100 can be unlocked first, and under the action of the torque of the two blades 200, the hub 100 will Rotate counterclockwise, for example but not limited to, rotate the hub 100 counterclockwise by 15°, the connecting flange in the vacant state will be in the first position, and at this time the second included angle β can be 75°, and the hub 100 is locked at this time . Then, the blade lifting auxiliary structure 300 can be hoisted horizontally, the first included angle α between the first beam 301 and the horizontal section 302 of the blade lifting auxiliary structure 300 can be 105°, and the blade lifting auxiliary structure 300 can be moved to a suitable position until The first end of the first beam 301 is docked with the connecting flange in a vacant state, and the blade lifting auxiliary structure 300 can be fixed on th...

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Abstract

The invention provides a blade hoisting auxiliary structure for a wind driven generator,a system and a hoisting method. The blade hoisting auxiliary structure comprises a first beam and a second beam,wherein the first end of the first beam can be detachably connected to a connecting flange of a hub; and the second beam is fixed to the second end, opposite to the first end, of the first beam, a first included angle is formed between the first beam and the second beam, and the first included angle can be greater than or equal to 90 degrees and smaller than 180 degrees. The blade hoisting auxiliary structure can perform horizontal hoisting even when the connecting flange is at a non-horizontal position, and the auxiliary structure can be matched with the corresponding connecting flange, so that the blade mounting efficiency is improved, and labor force is reduced.

Description

technical field [0001] The invention belongs to the technical field of wind power generation equipment, and in particular relates to a blade hoisting auxiliary structure for a wind power generator, a blade hoisting auxiliary system and a blade hoisting method. Background technique [0002] Wind turbines (referred to as fans) are devices that convert wind energy into electrical energy, using wind power to drive the blades to rotate, and then drive the generator to rotate to generate electricity. With the continuous increase of fan power, the volume of the fan blades will also become larger and longer, and the self-weight and moment of inertia of the entire impeller will also increase, so the installation of super long and super large blades will become more and more difficult. Bigger and more expensive. [0003] At present, in the process of installing and disassembling the fan blades, or when the generator is stuck, it is usually necessary to crank the generator. Barring i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/40F03D13/10
CPCF03D13/40F03D13/10Y02E10/72
Inventor 乔光谱代大桥李志华
Owner XINJIANG GOLDWIND SCI & TECH
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