A Study On Online Monitoring And Fault Diagnosis System For CO₂ Compressor

Centrifugal compressors are the key equipments in all of the chemical companies. They are usually used to compress medium gas, increase the pressure. Manufacture companies and users have tried lots of methods to extend safety running time, to avoid malfunction and to reduce the shutdown loss.Then comes the condition monitoring and fault diagnosis system..With the help of sensors on the compressor, it’s possible to monitor the running condition of the compressor, to detect problems in time. The condition monitoring system could also give the basic analysis to the preventive maintenance.This article gives the basic knowledge of the condition monitoring and fault diagnosis system, the recent application status and the development trend. It summarizes different malfunctions in different centrifugal compressors, validates the theoretic analysis. It also provides important examples for similar compressor problems, to carry out preventive maintenance, and to ensure the running safety of the compressor complex.