Abstract: Flash steam compressor unit,as an important part in the exploitation of offshore oil and gas resources,has attracted extensive attention because of its high failure rate. Real-time fault diagnosis is of great significance. Therefore, this paper summarizes the common fault types and existing diagnosis technologies in the unit,and designs a real-time fault diagnosis system of flash steam compressor unit based on LabVIEW,which can effectively realize the global fault analysis and identification of scrubber,compressor,cooler and control valve in the unit. The system establishes a logic tree model based on multi data analysis for fault diagnosis and identification of the unit,and the model includes a variety of data processing and analysis methods to process and analyze the temperature,pressure and liquid level data in the unit,so as to realize the fault diagnosis of each device in the unit.

Key words: flash steam compressor unit, fault diagnosis, LabVIEW, data processing