大型立式泵的振动分析及处理
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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.
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.
引文
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[2]陈伯权,刘明军,吴志强.600 MW机组凝泵变频运行振动分析及治理[J].浙江电力,2013(1):56-58.
[3]张永明.650 MW超临界机组大型循环水泵振动原因及处理[J].江苏电机工程,2006,25(2):17-18.
[4]何小锋.大容量机组轴流风机振动问题分析[J].热力发电,2017,46(1):129-132.
[5]郑文涛.立式循环水泵振动与异响原因分析及解决措施[J].广东科技,2009(206):136-137.
[6]何国安,龚伟,李志强,张卫军.立式泵组结构共振分析及治理[J].热力发电,2015,44(11):94-97.
[7]段学友,张秉权,周菁.大型立式变频凝泵某转速下振动大原因分析处理[J].电站系统工程,2012,28(5):51-54.
[8]陈伯权,刘明军,吴志强.600 MW机组凝泵变频运行振动分析及治理[J].浙江电力,2013(1):56-58.
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[10]陶泽宇.俄供AB1700L-24M型立式电动机检修调整困难的解决方法//全国火电大机组(600MW级)竞赛第9届年会论文集[C].2005.
[11]熊丽萍,王福忠.凝泵变频改造浅析[J].机电工程技术,2013,42(10):29-33.
[12]侯钢剑,吴小川,刘少恒,郭玉杰.火力发电厂凝泵节能改造及振动问题治理[J].应用能源技术,2011(2):28-32.