油田用往复式注聚泵锥阀工作特性仿真分析

Simulation Analysis of the Operating Characteristics for Oilfield Reciprocating Polymer Injected Pump Poppet Valve

建立了往复式注聚泵锥阀简化后的二维轴对称流场几何模型,给定进口阀的边界条件,利用Fluent软件对不同高粘度介质、不同最大开启高度下的锥阀内流场进行了数值模拟,获得了介质粘度、最大开启高度与阀进出口压差、阀隙流速、流量系数之间的定量关系。结果表明:随着介质粘度的增大,阀进出口压差增大,流量系数减小,而阀隙流速基本不变;随着最大开启高度的增大,进出口压差减小,阀隙流速减小,流量系数增大。该研究可为往复式注聚泵锥阀的设计计算提供参考。

The simplified 2-D axis-symmetry geometry model of the flow field for reciprocating polymer injected pump is established, then given the boundary condition of inlet valve, the numerical simulation under different high viscosity and different maximum open height for flow field is done depending on software Fluent. The relationship between viscosity and maximum open height to pressure difference between inlet and outlet, valve gap flow velocity and discharge coefficient are obtained. The results show that the pressure difference increases and discharge coefficient decreases with the increase of viscosity, but the velocity remains relatively constant. The pressure difference and velocity decrease with the increase of maximum open height, but discharge coefficient is increasing. The study results provide reference for the design of poppet valve.