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Method for correcting misalignment of blades of wind power generating set

A technology for wind turbines and blades, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of high cost, long time consumption, loss, etc., and achieve the effects of low cost, simple and convenient operation, and short time consumption.

Active Publication Date: 2017-08-11
XINJIANG GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the bolts connecting the blades are also very critical, once damaged, it will cause huge losses
[0003] In the actual installation and operation of wind turbines, if the installation angle of the blades is misaligned, it will affect the power generation, and even change the design load of the wind turbine, endangering the safety of the wind turbine.
Or, if the blade installation angle is correct, but the bolt holes are misaligned and misplaced, the bolts will be squeezed, the load will deteriorate, and eventually the bolts will be damaged, endangering the safety of the fan
[0004] In the existing technology, if there is a misalignment of the installation position of the blade or the misalignment of the bolt holes, the conventional solution is to use a crane to remove the entire impeller and hang it down, and then hoist it up after readjusting the installation on the ground, which takes a long time and costs high
If the turbine is located offshore, replacement time and cost will be higher

Method used

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  • Method for correcting misalignment of blades of wind power generating set
  • Method for correcting misalignment of blades of wind power generating set
  • Method for correcting misalignment of blades of wind power generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 , Image 6 , Figure 7 with Figure 8 As shown, a method for correcting the misalignment of blades of a wind power generating set includes the following steps: a. Rotate the impeller to rotate the blade 1 to a vertically downward position; b. Hang the blade 1 through the first connecting tool 5, and place the It is disassembled from the pitch bearing 2; c, hang the blade 1 through the second connecting tool 6, and remove the first connecting tool 5, and adjust the position of the blade 1; d, lift the blade 1 through the first connecting tool 5, And remove the second connection tooling 5, and install the blade 1 on the pitch bearing 2.

[0052] Wherein, the blade 1 is the target blade to be corrected, the first connection tool 5 and the second connection tool 6 can be hoisted by the manual hoist 8, and the manual hoist 8 can be connected to the hub and / or other parts of the impeller, so that There is no need to use a crane to operate, which reduces t...

Embodiment 2

[0062] The difference between this embodiment and the operation method of Embodiment 1 is that, as Figure 4 As shown, step b includes, b1', removing part of the connecting nut between the blade and the pitch bearing, b2', making a threaded hole at the bolt tail of the removed connecting nut, and installing a bolt extension device on the threaded hole, and The blade is connected to the first connecting tool through the bolt extension device, the blade is suspended by the first connecting tool, b3', the remaining connecting nut between the blade and the pitch bearing is removed, and the blade and the pitch bearing are connected through the first connecting tool separate.

[0063] Among them, with respect to embodiment one, only the long bolt 7 in embodiment one has been changed into a bolt extension device, because in actual work, the error correction work is affected by the real environment or structure, the long bolt 7 may be too long because of its length. It is too large t...

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PUM

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Abstract

The invention provides a method of correcting blade dislocation of a wind generating set. The method includes the following steps that 1, an impeller is rotated, and a blade is rotated to be upright and downward; 2, the blade is hung by a first connecting tool, and the blade is separated from a variable pitch bearing; 3, the blade is hung by a second connecting tool, the first connecting tool is detached, and the location of the blade is adjusted; 4, the blade is hung by the first connecting tool, the second connecting tool is detached, and the blade is installed on the variable pitch bearing. The method of correcting blade dislocation of the wind generating set has the advantages that the cost is low, the time consumption is shortened, the operation is simple and convenient, a crane is not needed, and the operation can conducted on the fan.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method for correcting the misalignment of blades of a wind power generating set. Background technique [0002] In wind turbines, blades are the key components for absorbing wind energy. The blades are connected to the pitch bearings through bolts, and the installation position and angle of the blades directly affect the power generation efficiency of the wind turbine. At the same time, the bolts connecting the blades are also very critical, once damaged, it will cause huge losses. [0003] In the actual installation and operation of wind turbines, if there is a misalignment of the blade installation angle, it will affect the power generation, and even change the design load of the wind turbine, endangering the safety of the wind turbine. Or, if the installation angle of the blade is correct, but the bolt holes are misaligned and misplaced, the bolts will be squeezed, the l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P11/00
CPCB23P19/04
Inventor 时洪奎陈文
Owner XINJIANG GOLDWIND SCI & TECH CO LTD