Reciprocating Machinery Fault Diagnosis Mechanism Research Mechanism And Simulation System Development

Reciprocating machinery is one of the core equipment inpetrochemical field, The complexity of its structure causes the acquisitionsignal overlap, it is difficult to decompose the excitation source. Whilethe vibration nosise environment brings many invaid signals, the effectivefault signal is submerged. These are big problems for reciprocatingmachinery fault diagnosis. The research of reciprocating machinery faultdiagnosis technology and fault simulation system for failure ofreciprocating machinery have theory significance and project applicationvalue. The main work of this paper is as follows:(1) Researches the key technique of fault diagnosis based onangle-domain analysis and porposes an angle-domain analysis methodcombining process and vibration parameters for reciprocating compressorto decompose vibration excitation source. (2) The complete unit modeling for double-cylinder, actingcompressor and one-piece compressor are completed. The analog moduleof motion principle, working cycle and dynamic damping-displacementfigure are constructed based on the fusion of monitoring method, failuresymptom and fault signal map. Modeling and analog simulation for thenormal operation and32faults of reciprocating compressor are completed.Man-machine interaction of fault learning is implemented to showvarious failure mechanism and fault phenomenon based on trainingsystem for reciprocating compressor fault diagnosis.(3) Take the diagnostic methods and simulation systems to practicalengineering application. Guide analysis of more than10types of unitfailure. Give an overall evaluation through the practical application.Improve the fault simulation system to achieve better accuracy. Provideeffective guidance for fault diagnosis to full-time staff.