The influence of spring stiffness and valve quality on the motion behaviors of reciprocating plunger pump discharge valves was investigated by fluid structure interaction (FSI) simulation and experimental analysis. The mathematical model of the discharge valve motion of a 2000-fracturing pump was developed and the discrete differential equations were solved according to FSI and results obtained by ANDINA software. Results indicate that spring stiffness influences the maximum lift, the opening resistance and shut-off lag angle, as well as the fluid velocity of the clearance, the impact stress and the volume efficiency of the pump valve in relation to the valve quality. An optimal spring stiffness parameter of 14.6 N/mm was obtained, and the volumetric efficiency of the pumping valve increased by 4‰ in comparison to results obtained with the original spring stiffness of 10.09N/mm. The experimental results indicated that the mathematical model and FSI method could provide an effective approach for the subsequent improvement of valve reliability, volumetric efficiency and lifespan.
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机译：通过流体结构相互作用（FSI）仿真和实验分析，研究了弹簧刚度和阀质量对往复式柱塞泵排气阀运动行为的影响。建立了2000压裂泵排泄阀运动的数学模型，并根据FSI求解了离散微分方程，并通过ANDINA软件获得了结果。结果表明，弹簧刚度会影响最大升程，打开阻力和截止滞后角，以及间隙的流体速度，冲击应力和泵阀的容积效率（与阀质量相关）。获得的最佳弹簧刚度参数为14.6 N / mm，与原始弹簧刚度为10.09N / mm的结果相比，抽气阀的容积效率提高了4‰。实验结果表明，数学模型和FSI方法可以为后续提高阀门的可靠性，容积效率和使用寿命提供有效的方法。
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