基于FLUENT的大流量电液换向阀主阀的数值模拟

Numerical simulation of master valve in large-flow electro-hydraulic directional valve based on FLUENT

根据某进口插装式电液换向阀主阀的结构,分析其工作原理,从增加过流断面面积进而增加流量的角度,设计了一款额定流量为1 000 L/min的电液换向阀主阀。运用CFD软件Fluent对阀道内流场进行数值模拟,分析其流场特性。结果表明,所设计的大流量电液换向阀主阀流场压力分布均匀,不易产生气穴与气蚀现象,没有产生明显的漩涡区,证明该阀流道结构合理,符合设计要求。

The structure and the working principle of the master valve in an imported cartridge electrohydraulic directional valve were analyzed, and a master valve for the electro-hydraulic directional valve whose rated flow reached 1 000 L/min was designed as to increasing the flow by increasing the cross section area. In addition, CFD software FLUENT was applied to conduct numerical simulation of the flow field in the valve path and analyze its characteristics. The results showed the designed master valve was characterized by evenly distributed pressure of the flow field, uneasy occurrence of cavitation, erosion and obvious vortex, which indicated the flow path of the valve was reasonable and met the design requirements.