燃气轮机轴瓦不稳定振动因素分析及平衡技术应用研究

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中图分类号：TP311;TQ013.2 文献标识码：A文章编号：1001-5922（2025）12-0209-04

Analysis of unstable vibration factors of gas turbine bearing bush and application of balance technology

DINGKai （POWERCHINA Resources Ltd.，Beijing 100048，China）

Abstract：Inorder toanalyze the mechanismofunstable vibrationof gas turbinebearing bush，the vibration monitoring system is used toanalyze the unstable vibration of gas turbine bearing bush，and thecorresponding solutions aregiven.Firstly，the vibration characteristics of9E gas turbine shaft systemare analyzed by Bentley 35OO vibration monitoring system.Then，based on the original monitoring system，the tile vibration data is added，and a scheme forcolecting historicaldatais found.Finally，the vibrationdataarecollectedandanalyzedto track the vibrationchanges of thegas turbine rotor，and the trend of the vibration of the9E gas turbine isanalyzed inan all-round way to find the specific causes and solutions of itsunstable vibration.After many on-site and factorydynamic balance tests，the artificial cooling method is usedto reduce the vibration amplitudeand climbing height，so as to improve thestabilityandsafetyof the unit，avoid majorsafetyaccidents，and ensure the normal and stable operation of the unit.

Key Words： gas turbine;bearing bush;unstable vibration;dynamic balance;artificial cooling

燃气轮机在电力生产、航空航天、船舶推进等关键领域发挥着不可替代的作用。（剩余5281字）