Test unit of variable-pitch system of wind generation set

A technology of pitch control system and test device, which is applied in the testing of mechanical components, testing of machine/structural components, and measuring devices. The effect of flexible load adjustment

Inactive Publication Date: 2012-06-27
TAIYUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a test device for the pitch system of wind turbines, and solve the technical problem of difficult loading tests of the existing pitch system

Method used

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  • Test unit of variable-pitch system of wind generation set
  • Test unit of variable-pitch system of wind generation set
  • Test unit of variable-pitch system of wind generation set

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0013] like figure 1 , 2 , 3, a test device for the pitch system of a wind turbine, comprising: a hub 5 and a pitch drive assembly 6 and a pitch bearing 7 mounted thereon, the pitch drive assembly 6 driven by the The inner ring of the pitch bearing 7 is connected to the brake disc 3 , the brake 2 is connected to the hub 5 through the mounting seat 4 , and the brake 2 is connected to the hydraulic station 8 .

[0014] The tooling frame 1 is used as a support, the upper part is connected with the wheel hub 5, and the lower part is connected with the ground beam of the factory building; the brake disc 3 is connected with the inner ring of the pitch bearing through bolts; the hydraulic station 8 is used as a power source to load the brake disc 3 through the brake 2, By changing the pressure of the hydraulic station, different frictional moments can be formed on the brake disc, thereby simulating different pitch and pitch torsional loads.

[0015] Working process of the present i...

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PUM

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Abstract

A test unit of a variable-pitch system of a wind generation set relates to wind generation set equipment, and solves the technical problem of difficulty in carrying out load test on the existing variable-pitch system. The test unit comprises a hub, and a variable-pitch drive assembly and a variable-pitch bearing which are installed on the hub, and is characterized in that: the variable-pitch drive assembly drives an inner ring of the variable-pitch bearing to be connected with a brake disc, and a brake is connected with the hub through a mounting seat, and is connected with a hydraulic station. The test unit tests the wind generation set and occupies a small space, the load is flexibly adjusted, the test unit not only is time saving and labor saving and has high efficiency, but also can conveniently carry out the load test on the variable-pitch system in a workshop, can timely find the defect, is beneficial to product quality improvement, and saves the hoisting cost of a fan.

Description

technical field [0001] The invention relates to equipment of a wind power generating set, in particular to a test device for a pitch control system of a wind generating set. Background technique [0002] At present, most domestic wind turbine complete machine manufacturers only conduct no-load tests on the pitch system before the products leave the factory, and cannot detect the working status of the pitch bearing and pitch drive assembly under load. Once the pitch system is found to be faulty after the wind turbine is hoisted, the entire wind turbine device including the pitch system can only be disassembled and lifted to the ground for repair or replacement. The lifting cost is high and seriously affects the progress of the project. [0003] In addition, some manufacturers conduct load tests on the pitch system by loading heavy objects. This method requires repeated replacement of heavy objects during the test, which is time-consuming and laborious, and the efficiency is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01M13/04G01M13/02
Inventor 朱少辉贾文强
Owner TAIYUAN HEAVY IND
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