汽轮机盘车晃动异常诊断及振动信号分析
Diagnosis of Abnormal Shake During Steam Turbine Turning and Analysis of Vibration Signal
刘明利 1张辉仁 1万新福 1王浩1
作者信息
- 1. 山东核电有限公司,山东 烟台 265116
- 折叠
摘要
针对某核电厂汽轮机在停机盘车过程中4号轴承2个振动传感器晃动幅值较大的问题,对盘车期间大轴晃动数据进行对比和分析,确定了汽轮机盘车时4号轴承异常晃动的原因,解体检查验证了判断的正确性,并从热膨胀、转子位置、运行工况3个方面分析了转子缺陷对振动信号的影响,提出了消除转子缺陷对振动信号影响的建议.
Abstract
In allusion to the problem of the large shake amplitude measured by two vibration sensors of No.4 bearing during steam turbine shutdown turning in a nuclear power plant,the comparison and analysis are carried out on the main shaft shake data ob-tained during turning.The cause of abnormal shake of No.4 bearing during steam turbine turning is determined,the correctness of the judgment is verified through the disassembly inspection.The influences of rotor defects on vibration signals are analyzed from three aspects:thermal expansion,rotor position and operation condition,and the suggestions to eliminate the influences of rotor de-fects on vibration signals are proposed.
关键词
汽轮机/晃动/盘车Key words
steam turbine/shake/turning引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据