前言泵是炼油厂和化工厂中的重要转动设备,而离心泵在现代炼油厂中占有相当大的比例。由于我国使用的离心泵存在着振动大、效率低和密封寿命短等缺点。使用中难免产生一些故障,如腐蚀和磨损、轴封故障、机械故障和性能故障等,而在离心泵的故障中,振动故障占有很大的比例,据文献报道,振动在故障 Introduction Pumps are important rotating equipment in refineries and chemical plants, whereas centrifugal pumps make up a significant proportion of modern refineries. Due to the existence of our country centrifugal pump vibration, low efficiency and seal short life and other shortcomings. The use of inevitably produce some faults, such as corrosion and wear, shaft seal failure, mechanical failure and performance failure, etc., and in the centrifugal pump failure, vibration fault occupies a large proportion, according to the literature, the vibration in the fault