Torsional vibration characteristics analysis and vibration suppression optimization of the compressor crankshafts based on the finite element numerical simulation and experimental testing
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Zhen Chen [1] ; Nengpeng Chen [1] ; Haowen Ju [1] ; Qingjie Ran [1] ; Qiaomu Wang [1] ; Chaocheng Wei [1]
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[1] Southwest Petroleum University
Southwest Petroleum University
China
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- Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 53, Nº. 11, 2025, págs. 7513-7541
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
As the key equipment of shale gas production and transportation, reciprocating compressor has gradually developed to large scale and multi-row, and the torsional vibration problem of crankshaft system has become increasingly obvious. A finite element analysis model of the crankshaft system was established, the torsional vibration characteristics of the crankshaft system under variable exhaust pressure were studied, the influence of different exhaust pressure on torsional operation stability was grasped, and the accuracy of the simulation method was verified through experiments. The test data and simulation data were within the engineering error, and on this basis, the optimization of torsional vibration suppression was carried out. The influence laws of different working conditions and structural parameters on shafting were analyzed, and the design research was carried out based on the response surface method to optimize the operation coordination. The research shows that: The rotational speed unevenness of shafting is reduced by 12.92%, and the rotational speed unevenness of each column of the crankshaft after optimization is less than 0.025, which meets the standard of rotational speed unevenness, the torsional vibration of shafting is reduced, and the running smoothness of crankshaft is improved, which indicates the effectiveness of the crankshaft structure optimization. The study of variable operating conditions provides a new idea and key data support for more accurately grasping the dynamic behavior of crankshaft system in the actual shale gas production and transportation process.
