中国电力 ›› 2018, Vol. 51 ›› Issue (7): 95-102.DOI: 10.11930/j.issn.1004-9649.201802061

• 发电 • 上一篇    下一篇

弹簧基础的汽轮发电机振动异常原因分析及处理

蒋小利, 何荣尧   

  1. 中国能源建设集团浙江火电建设有限公司, 浙江 杭州 310016
  • 收稿日期:2018-02-23 修回日期:2018-04-11 出版日期:2018-07-05 发布日期:2018-07-31
  • 作者简介:蒋小利(1985-),男,硕士,工程师,从事汽轮发电机组安装与调试工作,E-mail:724424125@qq.com

Cause Analysis and Treatment of Abnormal Vibration of the Steam Turbine for Spring-Supported Foundation Table

JIANG Xiaoli, HE Rongyao   

  1. China Energy Engineering Group Zhejiang Thermal Power Construction Co., Ltd., Hangzhou 310016
  • Received:2018-02-23 Revised:2018-04-11 Online:2018-07-05 Published:2018-07-31

摘要: 汽轮发电机振动异常是影响汽轮发电机安全运行的重要因素之一。弹簧基础的汽轮发电机振动异常原因分析十分复杂。通过对某新建电厂2×660MW阿尔斯通超超临界燃煤汽轮发电机振动异常进行故障分析,正确研判弹簧基础的汽轮发电机振动异常根本原因,并提出一种以降低低压缸排汽侧真空压力值的冲转方式,解决了弹簧基础的汽轮发电机振动异常问题,保证了机组的安全稳定运行。

关键词: 汽轮发电机, 真空, 弹簧基础, 振动, 故障分析

Abstract: The abnormal vibration of the steam turbine is one of the important factors affecting the operation security. However, the cause analysis of the abnormal vibration is very complicated for the steam turbine with spring-supported foundation table. Through the cause analysis of the abnormal vibration for two ALSTOM ultra-supercritical steam turbines, the fundamental cause of the abnormal vibration is found. Then, a start-up method of reducing the vacuum value of the low pressure casing exhaust is proposed, which has tackled the issue of abnormal vibrations of the spring-supported steam turbines and ensured their operation security.

Key words: steam-turbo generator, vacuum, spring-supported foundation table, vibration, cause analysis

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