Study On Torsional Vibration Of 6HS-MG Labyrinth Compressor Crankshaft

With China’s rapid economic development,as the petrochemical industry,an important process equipment,reciprocating compressor technology gradually large capacity,high pressure,low noise,high performance development.On the basis of the prior art,in order to further improve the productivity,it is urgent to solve the problem of the torsional vibration of the crankshaft system.Torsional vibration of the crankshaft will lead to other parts of the crankshaft accelerated wear,noise,or even crankshaft fracture,seriously affecting the compressor production efficiency and service life.In order to make the compressor get more breakthrough and development,to achieve better torsional vibration performance.In this paper,6HS-MG maze compressor crankshaft system as the research object,based on the experience of the past,based on the use of advanced dynamic analysis techniques and tools for the crankshaft system finite element analysis and calculation.The main contents include:(1)The crankshaft system of 6HS-MG labyrinth compressor supplied by the enterprise is analyzed,and the crankshaft structure is optimized.The 6HS-MG maze compressor crankshaft model was established by using the software Creo3.0,The crankshaft of 6HS-MG labyrinth compressor was introduced into ANSYS for statics analysis and strength checking.The results were compared with the original shaft system,which provided the basis for the later analysis and research of the compressor.(2)According to the load and constraint of the crankshaft during the working process,the boundary condition is applied to the model,and the crankshaft modal analysis is carried out.The natural frequencies of the first ten steps of the crankshaft and the corresponding modes are determined,and the natural frequency of torsionalvibration may be analyzed.(3)The crankshaft system harmonic response analysis to get the different positions of the crankshaft on the simple harmonic load frequency curve,according to the frequency response curve to determine the maximum risk of crankshaft position;And the fracture location of the original shaft system may be analyzed and analyzed,which provides the theoretical basis and guidance for judging the dangerous point of the crankshaft system.By analyzing the torsional vibration of 6HS-MG labyrinth compressor crankshaft system,the design of this model is improved,and the reference for torsional vibration analysis,theoretical research and production design of other models are also provided.