液压与气动2025，Vol.49Issue(9)：28-38,11.DOI:10.11832/j.issn.1000-4858.2025.09.004
液压滑阀动密封特性分析及试验研究
Analysis and Experimental Study on Dynamic Sealing Characteristics of Hydraulic Spool Valve
摘要
Abstract
Dynamic seals in hydraulic slide valves play a crucial role in reducing oil leakage.However,their sealing performance is significantly influenced by environmental temperature,medium temperature and oil pressure,which alter the seal clearance during operation.A finite element analysis model is developed to analyze the combined sealing structures commonly used in slide valves.The model is used to evaluate the effects of varying environmental and medium temperatures,as well as pressure conditions on the clearance and friction behavior of dynamic seals.Based on the Stribeck curve,a mathematical expression describing the relationship between seal clearance and the friction coefficient is introduced.Experimental validation confirmed the accuracy of the theoretical model.The results indicate that the gap between the fluoroplastic sealing ring and the valve sleeve decreases with increasing temperature,accompanied by a corresponding change in the dynamic friction coefficient.Furthermore,both the theoretical analysis and experimental data reveal that the friction force of the dynamic clearance seal increases with temperature.关键词
动密封特性/摩擦力/有限元仿真/台架试验Key words
dynamic sealing characteristics/friction force/finite element simulation/bench test分类
机械制造引用本文复制引用
吕亚冬,陈英龙,蔡金艳,刘宏玥..液压滑阀动密封特性分析及试验研究[J].液压与气动,2025,49(9):28-38,11.基金项目
国家重点研发计划(2021YFC2802403,2024YFC2816400) （2021YFC2802403,2024YFC2816400）
国家自然科学基金(52275053) （52275053）
工业和信息化部高新技术船舶项目(CBG2N21-2-1) （CBG2N21-2-1）
