液压与气动2026，Vol.50Issue(5)：90-99,10.DOI:10.11832/j.issn.1000-4858.2026.05.010
工程机械用比例减压阀冲蚀磨损特性研究
Research on Erosion Wear Characteristics of Proportional Pressure-reducing Valve for Construction Machinery
摘要
Abstract
Electro-hydraulic proportional pressure-reducing valves are core components in the electro-hydraulic control systems of construction machinery.Their performance degradation directly affects system reliability,and erosion wear is one of the primary failure modes of such valves.Taking a typical proportional pressure-reducing valve as the research object,we adopt computational fluid dynamics and the Discrete Phase Model and combine with the Oka erosion model,to simulate the fluid-solid two-phase flow characteristics and erosion wear distribution inside the valve under different spool clearances,opening degrees and inlet-outlet pressure differentials.The rationality of the simulation results is verified through experiments.The study shows that erosion wear mainly concentrates on the throttling edge region of port P;the wear rate peaks at a spool clearance of approximately 15 μm and a pressure differential of 2.8 MPa;as the clearance continues to increase or the pressure differential further rises,erosion wear exhibits a decreasing trend.Valve port erosion leads to reduced pressure gain and increased internal leakage,which is the main cause of performance degradation.This research provides a theoretical basis for the failure analysis,life prediction and structural optimization of proportional pressure-reducing valves.关键词
冲蚀磨损/比例减压阀/流体仿真/颗粒轨迹Key words
erosion wear/proportional pressure-reducing valve/fluid simulation/particle trajectory分类
机械制造引用本文复制引用
陈立娟,高翔,高伟,姚太鑫,张宇轩,艾超..工程机械用比例减压阀冲蚀磨损特性研究[J].液压与气动,2026,50(5):90-99,10.基金项目
国家自然科学基金(5247055002 （）
5217052909 （）
5220052103 （）
U22A201412) （）
