某核电厂调试期间立式转动设备结构性共振问题分析及探讨

摘要

The vibrations of vertical rotating equipment expending bounds in period of commissioning and operation are common Faults. There are a lot of reasons which can cause vibration. At present, spectrum analysis is a conventional method to analyses vibration in domes-tic nuclear power counterparts. The same spectrum usually corresponds to different fault phenomena. How to accurately locate the excitation source puts higher requirements on the theoretical level and working experience of vibration diagnosis workers. According to the structural resonance cases of rotating machinery during commissioning of a nuclear power plant, this paper describes and discusses structural reso-nance of vertical rotating machinery from the fault phenomenon, diagnostic procedures, treatment plan and treatment results, in order to pro-vide experience and reference for the following plant commissioning and operation.%立式转动设备振动超标在机组调试及试运行期间较为常见,导致设备振动的原因种类较多,目前国内核电厂同行常用的故障诊断手段为频谱分析,同一个频谱对应的故障现象较多,实际工作中,如何准确定位激振源,对振动诊断工作者的理论水平及工作经验提出较高的要求.该文结合国内某核电厂调试期间旋转机械结构性共振处理案例,从故障现象、诊断过程、处理方案及处理结果四个方面进行说明及探讨,为后续机组调试及运行提供经验及参考.