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压裂泵曲轴曲拐布置的优化方法 预览

Optimization Method of Crankshaft Crank Arrangement for Fracturing Pump
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摘要 五缸压裂泵曲轴曲拐的不同布置,会导致与液力端相连的低压吸入管汇与高压排出管汇中出现流量与压力波动,甚至出现局部断流。流量与压力波动可表现为曲轴负载及惯性水头损失,降低曲轴寿命和能量转换效率;局部断流会造成管道沉沙。为了减小流量与压力的波动,改善局部断流与曲轴受力,提出了断流现象持续区域和曲轴所受弯矩的优化目标,建立了五缸压裂泵曲轴曲拐布置的优化方法。最终确定出两种曲轴曲拐布置的最优方案,其吸排管汇的流量波动幅值最小、断流现象持续区域最短,有效地减轻了惯性水头损失和沉沙问题,改善了泵的吸排性能和曲轴弯矩。 Different arrangements of crankshaft crank of five-cylinder fracturing pump will cause flow and pressure fluctuation in sinks of low-pressure suction pipe and high-pressure discharge pipe connected to hydraulic end, and may even cause local disconnection. Flow and pressure fluctuations can be expressed as crankshaft load and inertia head loss, reducing crankshaft life and energy conversion efficiency;partial flow cut off will cause the phenomenon of sediment precipitation in suction pipes. In order to reduce fluctuation of flow and pressure, improve the partial flow cut off and the stress of crankshaft, the optimization target of continuous region of flow cut off phenomenon and the bending moment of crankshaft is proposed. The optimization method of crankshaft arrangement of five-cylinder fracturing pump is established. Finally, the optimal scheme for the two crankshaft cranking arrangements is determined. Its suction pipe and discharge pipe have the smallest flow fluctuation amplitude and the shortest continuing region of flow cut-off phenomenon, which effectively reduces the inertia head loss and sedimentation problem, and improves the pump suction and discharge performance and crankshaft bending moment.
作者 马良丰 冯进 魏俊 刘倩倩 MA Liang-feng;FENG Jin;WEI Jun;LIU Qian-qian(School of Mechanical Engineering, Yangtze University, Jingzhou, Hubei434023)
出处 《液压与气动》 北大核心 2019年第5期132-137,共6页 Chinese Hydraulics & Pneumatics
关键词 五缸压裂泵 曲轴曲拐布置 断流现象持续区域 沉沙 惯性水头 five-cylinder fracturing pump crankshaft crank arrangement continuous region of flow cut off phenomenon sedimentation, inertial loss
作者简介 马良丰(1993-),男,安徽阜阳人,硕士研究生,主要从事机械结构设计与流体机械设计优化工作。
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