炼化装置循环水泵振动过大的分析及处理

Analysis and Treatment of High Vibration of Circulating Water Pump for Petrochemical Enterprises

针对循环水泵GA2802B振动过大的问题开展振动信号诊断,分析结果表明该振动与流体扰动产生的激振力有关,通过理论计算和现场实测相结合,发现该泵处于“超流量”的情况,偏离了设计工况,同时抗汽蚀性能减弱。文章采用三元流叶轮优化改造方式,彻底解决了泵振动过大的问题,同时实现良好的节能效果,既确保了装置的安稳生产,又产生显著的经济效益,可为同类型装置提供参考。

A vibration signal diagnosis was carried out for the high vibration problem of the circulating water pump GA2802B.The analysis results showed that the vibration was related to the excitation force generated by fluid disturbance.Through theoretical calculation and on-site measurement,it was found that the pump was in an“excessive flow”situation,deviating from the design operating point,and its anti-cavitation performance was weakened.This article adopts the transformation method of three-dimensional flow impeller,which completely solves the problem of high vibration and also achieves good energy-saving effects.It not only ensures stable production of the device,but also generates significant economic benefits,providing important reference for similar devices.