高压调节阀结构改进与汽蚀仿真

针对高压调节阀使用寿命偏低的问题，以串联型的多级降压结构为基础，提出一种优化的高压差调节阀结构。采用ANSYS Fluent对阀门内部的汽蚀现象进行仿真研究，得出静压、速度、气相体积分数等一系列数据，并讨论多级降压结构对阀门性能的影响。结果表明：阀门处于小开度下，容易产生汽蚀，汽蚀部位主要位于节流孔的阀芯与阀座处；相同工况下，优化后的调节阀能够有效抵抗气蚀，从而提高阀门的使用寿命。

Structural Improvement and Cavitation Simulation of High Pressure Regulating Valve

 In view of the fault of high pressure regulating valve with short lifespan, one optimized structure of high pressure regulator valve is proposed based on a series-connected multistage step-down structure. A series of data including static pressure, velocity and gas phase volume fraction are obtained by the software Fluent ANSYS to simulate the cavitation inside the valve. The effect of multistage depressurization on valve performance is also discussed. The results show that a valve is easy to generate cavitation when the valve is in a small opening, and the cavitation is mainly located in valve spool and seat of throttling hole; Under the same condition, the optimized regulating valve can effectively resist cavitation, thus improving the service life of the valve.