关键词: 管系振动,   ,  固有频率,   ,  模态,   ,  谐响应

Abstract: Reciprocating compressor is one of the important equipments in the industrial field. The vibration problem has always existed in the pipe system of reciprocating compressor. By modal and harmonic response analysis, we can get the result that can accurately figure out the vibration characteristics of the structure. Aiming at vibration problems of reciprocating compressor piping of natural gas on the platformi n an oil field, it was found that the natural frequency of the piping was coincident with the resonance region of the excitation frequency by means of modal analysis and harmonic analysis. The method was proposed to change the supporting position and add reasonable support. Through numerical simulation and experiment data, it was found that pipe inherent frequency value was increased effectively, the amplitude of vibration was reduced, and the feasibility of the method was so verified.

Key words: Pipe system vibration,    , Natural frequency,    , Mode,    , Harmonic response