某57MW供热汽轮机汽流激振分析与处理  

Analysis and Treatment of Steam⁃Induced Vibration of a 57 MW Heat Supply Turbine

作　　者：徐书德 刘腾洋 居国腾 丁俊杰 XU Shude;LIU Tengyang;JU Guoteng;DING Junjie(Zhejiang Provincial Energy Group Company Ltd.,Hangzhou 310006,China)

机构地区：[1]浙江省能源集团有限公司,杭州310006

出　　处：《热力透平》2024年第4期296-299,共4页Thermal Turbine

摘　　要：汽流激振是汽轮发电机组的常见故障之一,剧烈的激振会对机组的平稳安全运行产生严重影响。以某57 MW背压供热汽轮发电机组为例,阐述了机组在高负荷时1号轴承振动突升的现象,通过数据分析准确判断出了汽流激振为此次故障的原因,并通过优化阀序控制、提高轴承比压的方法,及时控制并消除了故障,使机组能够平稳运行。研究成果可以为同类型机组汽流激振问题的分析与处理提供参考。Steam⁃induced vibration is one of the common faults in turbine generator units.Severe vibration will seriously affect the operation safety and stability of unit.Taking a 57 MW backpressure heat supply turbine generator unit as example,the abrupt rise of vibration in No.1 bearing under high load was demonstrated,and the steam excitation was deduced to be the cause of this failure by data analysis.After optimization of opening sequence of valves and increasing the specific pressure of bearing,the vibration was controlled in time and finally eliminated,so the unit was able to operate stably.The research findings can provide reference for the analysis and treatment of steam⁃induced vibration in the same type of units.

关 键 词：汽轮机 汽流激振 阀序优化 轴承比压 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]