本文介绍了一种多级降压高压差调节阀的结构及工作原理。使用SolidWorks软件建立流道三维模型，并用网格划分软件对模型进行离散化处理，按实际工况参数设定边界条件，通过CFD流体动力学软件对阀门内部流场进行数值模拟。分别对阀门流量模拟计算，降压级数确定，对其压力场、速度场分布进行了分析。结果表明多级降压结构设计能够有效实现压力的渐变，有效地避免汽蚀现象的发生，防止冲刷、气蚀，延长使用寿命。%This paper introduces the structure and working principle of pressure difference a multi-stage step-down control valve. Using SolidWorks sofeware to build a three-dimensional model of the flow channel, and meshing sofeware using the model of discrete processing, according to the actual working parameters set boundary conditions, by finite element analysis software for CFD valve internal lfow ifeld numerical simulating. Valve lfow simulation, respectively, to determine the buck series, its pressure, velocity distribution is analyzd. The results show that the multi-stage step-dowm design can effectively achieve the pressure gradient, effectively prevent the occurrence of cavitation, prevent erosion, cavitation and prolong life.
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