大型立式泵的振动分析及处理  

Analysis and Treatment of Large Vertical Pump Vibration

作　　者：何小锋[1] 卢修连[1] 刘晓锋[1] HE Xiao-feng;LU Xiu-lian;LIU Xiao-feng(Jiangsu Frontier Electric Technologies Co.,Ltd.,Nanjing 211102,Jiangsu,China)

机构地区：[1]江苏方天电力技术有限公司,江苏南京211102

出　　处：《电站辅机》2018年第4期35-38,共4页Power Station Auxiliary Equipment

摘　　要：近年来,火电机组大型立式泵出现低频振动的现象较为突出。通过理论分析,并结合运行试验和验证,查明了立式泵低频振动的起因。试验结果表明,立式泵不稳定运行时的低频振动故障,是由于安装及磨损等问题引发的。由于轴系的不平稳运行,致使立式泵产生了低频振动,激发了壳体的共振。In recent years,the phenomenon of unstable low frequency vibration of large vertical pumps in thermal power plants is more prominent.Through the theoretical analysis and elimination,combined with the test verification,the cause of the fault can be clear.The test results show that the low frequency vibration fault of the vertical pump during unstable operation is caused by wrong installation and wear.Because of the unstable operation of the shafting,the vertical pump produces low-frequency vibration,which stimulates the resonance of the shell.

关 键 词：立式泵 振动 不稳定 低频 安装 磨损 共振 轴系 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]