往复泵─管路液力系统动态特性研究

DYNAMIC BEHAVIOR OF A RECIPROCATING PUMP PIPING HYDRAULIC SYSTEM

本文用传递矩阵的方法建立了描述往复泵—管路液力系统流体动力特性方程，井导出了各子系统的传递矩阵。该方程综合考虑了空气包、泵阀的动态特性以及不同管路、液缸间压力的相互影响。研究和计算结果表明，该方程全面地、接近实际地反映了往复泵工作过程中液体的动态特性，从而替代以往的、建立在伯努利方程基础上的往复泵液力系统、用于泵实际工作过程的动态特性分析计算方法。

This paper establishes a fluid dynamic equation for a reciprocating pump-piping hy-draulic system with the transfer matrix method and deduces all the transfer matrixes of the subsystems.This equation reflects the fluid dynamic behaviors of the system comprehensiv-ely and practically because it considers the dynamic properties of the air-chamber and valves,the effect of different pipings and fluid pressure in hydraulic cylinders.This equation can sub- stitutes, previous methods based on the Bernoulli equation to analyze and calculate the dy-namic behavior of practical working process of the pump.