摘要
在介绍汽流激振故障发生机理及特征的基础上,结合某电厂660 MW机组在顺序阀带大负荷时1瓦和2瓦出现较大低频振动的实例,分析了降负荷试验时的频谱图和振动特征,并提出了处理方案。通过调整进汽阀序和1瓦、2瓦标高,基本解决了低频振动问题。
The characteristics and mechanism of steam-exited vibration fault were discussed in this paper. At a high load, larger half-frequency vibration occurred in NO.1 and NO.2 bearing of one 660MW steam turbine. Based on the further analysis on the frequency spectrum of valve test and vibration characteristics, it was deduced that the vibration was caused by steam-exited vibration. By adjusting the valve and the elevation of NO. 1 and NO.2 bearing, we basically solved the turbine vibration.
出处
《江苏电机工程》
2015年第1期73-74,共2页
Jiangsu Electrical Engineering
关键词
轴系稳定性
汽流激振
阀序
轴承标高
the sharing stability
steam-excited vibration
valve
height of bearing
