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Method for improving cooling effect of generator outgoing line sleeve

A technology of outlet bushing and cooling effect, which is used in the testing of machine/structural components, fluid tightness testing, and by measuring the acceleration and deceleration rate of fluids, etc., can solve problems such as hydrogen leakage, improve air tightness, reduce Cost consumption and the effect of improving power generation efficiency

Pending Publication Date: 2021-04-06
HUANENG SHANGHAI GAS TURBINE POWER GENERATION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a method for improving the cooling effect of the generator outlet bushing. Through the combined use of glass mica ribbon and epoxy adhesive, the airtightness of the generator outlet bushing is improved, and the airtightness of the outlet bushing is solved. The problem of hydrogen leakage caused by poor tightness and the decrease of cooling effect caused by hydrogen leakage effectively improves the power generation efficiency of the generator, and the operation is simple and the cost is extremely low

Method used

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  • Method for improving cooling effect of generator outgoing line sleeve
  • Method for improving cooling effect of generator outgoing line sleeve

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Embodiment 1

[0036] After the No. 3 generator of our factory was put into use, the total power generation increased, but with the increase of the generator's service time, the power generation efficiency of the generator gradually decreased. After investigation, it was found that apart from the decline in generator efficiency caused by component life issues, there were still factors that caused the generator's power generation efficiency to decline. After another investigation, it was found that the cooling effect of the generator outlet bushing of phase A of the No. 3 generator decreased, which led to a decrease in the generator's power generation efficiency.

[0037] Such as figure 2 As shown, the outlet sleeve includes an outlet sleeve end joint 1, a rubber gasket 2, a mounting flange 3, an insulating sleeve 4, a tubular conductor 5, a generator side connecting flange 6, and an end fixing cover 10. The generator outlet bushing is fixed on the generator by the mounting flange 3, and th...

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Abstract

The invention relates to a method for improving the cooling effect of a generator outgoing line sleeve. The method comprises the following steps: calculating the hydrogen leakage amount in the generator, and checking the airtightness of the end part of the outgoing line sleeve if the hydrogen leakage amount exceeds a safety threshold value; if the air tightness is not qualified, the outgoing line sleeve is processed; hydrogen in the outgoing line sleeve is replaced with air, the pressure is released to standard atmospheric pressure, and the outgoing line sleeve is cleaned; coating the end part of the outgoing line sleeve with a glass mica tape, coating the glass mica tape with an epoxy adhesive, and enabling the epoxy adhesive to permeate into a gap between the glass mica tape and the outgoing line sleeve and to be cured; and if the air tightness of the end part of the outgoing line sleeve is qualified, the generator works again. Compared with the prior art, the glass mica tape and the epoxy adhesive are combined, so that the air tightness of the outgoing line sleeve is improved, the problems of hydrogen leakage caused by poor air tightness of the outgoing line sleeve and reduction of the cooling effect caused by hydrogen leakage are solved, the power generation efficiency of the generator is effectively improved, the operation is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of generator sets, in particular to a method for improving the cooling effect of generator outlet bushings. Background technique [0002] Since the discovery of electric energy, electric energy has greatly improved human life. With the rapid development of the world economy, human beings are increasingly dependent on and demand for electric energy. The generator is the most important equipment in the power plant. It is a kind of equipment that converts other energy into electric energy. How to ensure and improve the power generation efficiency of the generator is a research hotspot. [0003] There are many factors that affect the efficiency of generator power generation. After the No. 3 generator of our factory was put into use, the total power generation increased, but with the increase of the generator's service time, the power generation efficiency of the generator gradually decreased. After investigati...

Claims

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Application Information

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IPC IPC(8): G01M3/28
CPCG01M3/2815
Inventor 张燚骋李清平
Owner HUANENG SHANGHAI GAS TURBINE POWER GENERATION CO LTD
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