汽轮发电机组振动周期性波动故障原因分析  

Fault Diagnosis of Turbo-generator with Periodically Fluctuating Vibration

作　　者：杨建刚[1] 谢东建 高亹[1] 

机构地区：[1]东南大学火电机组振动国家工程研究中心,南京210096 [2]山西电力公司,太原030001

出　　处：《汽轮机技术》2001年第6期362-364,共3页Turbine Technology

基　　金：国家重点基础研究发展规划项目 (G199980 2 0 3 0 0 );国家自然科学基金项目 (5 0 0 0 5 0 0 4)资助

摘　　要：某电厂大修后开机过程中出现了比较大的振动故障 ,振动呈现明显的周期性波动现象 ,停机过程中振动异常增大 ,严重影响了机组的安全稳定运行。全面介绍了机组振动测试分析结果 ,深入分析了机组故障原因 ,指出轴承油档内油垫与轴的摩擦是导致异常振动的根本原因 ,据此进行了治理 。A large vibration fault occurs in a power plant during the first running process of the turbo generator after been repaired. Periodically fluctuating vibration and abnormally large vibration during the stop process occur in the unit. The unit can't run safely and reliably due to the large unstable vibration. The vibration fault diagnosis process is presented in the paper in detail. It is concluded that the rub between the oil gasket and shaft is the main reason for the unstable vibration. Fault diagnosis project was realized during the overhaul of the unit. The vibration problem was solved.

关 键 词：振动 摩擦 汽轮发电机组 周期性波动 故障诊断 原因分析 

分 类 号：TM311.07[电气工程—电机]