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

doi:10.11930/j.issn.1004-9649.201802061

Abstract

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

CLC Number:

TK268+.1

JIANG Xiaoli, HE Rongyao. Cause Analysis and Treatment of Abnormal Vibration of the Steam Turbine for Spring-Supported Foundation Table[J]. Electric Power, 2018, 51(7): 95-102.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201802061

https://www.electricpower.com.cn/EN/Y2018/V51/I7/95

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