Fault Diagnosis Of Ei350-9/0.97 Air Centrifugal Compressor

As one of universal machine, centrifugal compressor is an ideal air-supplying equipment which is used widely in the industry of petroleum, mine, railway, mechanics, construct, chemical and electric. Its running state influences all the reliability and efficiency of power plant directly. So fault diagnosis has pretty important actual meaning.In this paper, the object is fault diagnosis of centrifugal air compressor, and the whole research work is based on this.At the beginning, the paper introduces the basic knowledge of fault diagnosis and signal processing, importance and developing situation. Then we made a introduce of centrifugal air compressor, the internal structure and operating principle, represent the fault diagnosis of its basic component.This paper'research object is EI350-9/0.97centifugal ir compressor,which ismade in Shanxi Compressor Machines and used in Air-compressing Workshop,Guizhou Branch of China Aluminum L.T.D we set gaging points at the bearings of electric engine, gears and air compressor. We adopted the digital signal processing methods to acquire the vibration and noise signals. We used the methods of time-domain analysis, transfer function e.t.c. to process the signals. We also present the recommendations to improve the processing technology to make compressors working well.