有杆抽油泵固定凡尔球开启时间规律研究

Study on Opening Time of Standing Valve for Rod Pump

有杆抽油泵的固定凡尔控制抽油泵的吸入过程,其固定凡尔球的打开程度与开启时间对合理调整抽油机工作制度有至关重要的作用。为此建立抽油泵固定凡尔球的流固耦合模型,运用动网格技术和接触压力方法,实现了上冲程阶段固定凡尔球的运动过程,解决了凡尔球在流体域中接触其他固体壁面产生的拓扑结构变化问题,并在此基础上得到了各影响因素下固定凡尔球的打开程度与所需开启时间的变化规律曲线。数值模拟的结果为抽油机工作制度的合理优化提供了理论参考。

The standing valve of sucker rod pump controls the suction process of the pump.The opening degree and opening time of the standing valve ball play an important role in adjusting the working system of the pump.In this paper,the fluid structure coupling model of the standing valve ball of the oil well pump is established.The moving grid technology and contact pressure method are used to realize the moving process of the standing valve ball in the up stroke stage,and the topological structure change caused by the ball contacting other solid walls in the fluid domain is solved.On this basis,the opening degree and the required opening time of the standing valve ball under various influencing factors are obtained The curve of change law between.The results of numerical simulation provide a theoretical reference for the reasonable optimization of pumping unit working system.