阀结构对水介质插装阀性能的影响

Influence of Valve Structure on Performance of Water Media Cartridge Valve

针对水介质插装阀在高压工况下容易产生气穴、气蚀和噪声的问题,设计不同的阀芯结构以及阀座结构来减小气穴及气蚀现象。通过理论分析得出减小气穴产生的方法,运用FLUENT仿真软件,研究不同的阀芯、阀座结构在高压工况下的气穴产生情况。结果表明:带有倾角的二级节流口具有较好的抗气穴特性,椭圆形阀芯能够降低压降集中;椭圆状阀芯与带倾角的二级节流口相配合时,气穴发生的程度相对最小。研究结论为设计水介质液压阀提供参考。

Aimed at the problems of cavitation, cavitation damage and noise easily occurring in water media cartridge valve under high pressure conditions, different valve core structures and valve seat structures were designed to reduce cavitation and cavitation damage.Through the theoretical analysis, the method of reducing the generation of cavitation was obtained. FLUENT simulation software was used to study the cavitation generation of different valve core and valve seat structures under high pressure conditions. The results show that the secondary orifice with inclination angle has better anti-cavitation characteristics, and the elliptical valve core can reduce the pressure drop concentration. The degree of cavitation occurs relatively minimum when the elliptical valve core is matched with the secondary orifice with inclination angle.The research results can provide reference for the design of water media hydraulic valve.