液压与气动2025，Vol.49Issue(12)：57-68,12.DOI:10.11832/j.issn.1000-4858.2025.12.006
典型液压滑阀压力流量特性分析
Analysis of Pressure and Flow Characteristics of Typical Hydraulic Spool Valves
摘要
Abstract
The pressure-flow characteristic is a key performance indicator for hydraulic valves,among which spool valves represent one of the three most widely used types of hydraulic control valves.Typical hydraulic spool valves include L-type,U-type,and V-type configurations.To refine the theoretical framework for their pressure-flow characteristics,this study firstly develops a universal hydraulic model based on the structural features and fluid dynamics principles of typical spool valves.MATLAB programs are written to analyze how spool opening influences different hydraulic models.Furthermore,commercial CFD simulation software is employed to conduct numerical calculations of the flow field inside a typical hydraulic spool valve.The analysis focuses on the variation patterns of the velocity and pressure fields,the pressure-flow characteristics,and factors influencing the flow coefficient of the valve port.The results indicate that both the equivalent diameter and the flow area of typical hydraulic spool valves increase synchronously with the spool opening.Under identical boundary conditions,the L-type spool valve exhibits the smallest pressure loss and the lowest flow coefficient.The variation of the flow coefficient depends solely on the spool structure and the spool opening,decreasing as the opening increases.关键词
液压阀/典型液压滑阀/压力-流量特性/流量系数/MATLAB编程/CFD数值计算Key words
hydraulic valve/typical hydraulic spool valve/pressure-flow characteristics/flow coefficient/MATLAB programming/CFD numerical calculation分类
机械制造引用本文复制引用
毛文亮,赵彦军,柴红强,刘一璠,高东玲..典型液压滑阀压力流量特性分析[J].液压与气动,2025,49(12):57-68,12.基金项目
流体动力基础件与机电系统全国重点实验室开放基金(GZKF-202415) （GZKF-202415）
流体及动力机械教育部重点实验室开放基金(LTDL-2023001) （LTDL-2023001）
陕西省教育厅专项科研计划项目(23JK0330) （23JK0330）
