摘要
液压元件设计理论随着液压系统控制精度的提升不断完善,对液压阀阀套阀芯间配合间隙的设计时需考虑阀套和阀芯变形带来的影响。依据实际使用的插装阀结构尺寸,建立其整体的三维流固热三场耦合模型,给出了不同边界条件时阀芯阀套的温度场分布规律及阀芯阀套在热效应和压力效应共同作用下产生的变形量,同时给出变形量带来的阀套阀芯配合间隙的变化。研究结果表明:锥阀在不同的工况时,热效应和压力效应对阀芯阀套的变形量和变形方向的作用不同,阀芯阀套的变形对其配合间隙的影响需针对典型工况进行具体分析。
The design theory of hydraulic element has been refined constantly, with the improvement of the control precision of hydraulic system. The deformations of the fit clearance between the valve sleeve and core need to be considered. In this paper, the three-dimensional model of the cartridge valve was established and the liquid-solid-thermal coupling simulation was carried out at different boundary conditions. The temperature distribution of the solid and the flow field was shown. The deformation of the sleeve and the cone under the action of the thermal stress and fluid pressure was also obtained, and the deformation influence on the clearance between them was estimated. It is shown that the effect of valve core and sleeve deformation on the fit clearance varies with the work condition and needs to be analyzed in the typical case.
作者
郑淑娟
权龙
郝用兴
Shu-juan ZHENG;Long QUAN;Yong-xing HAO(College of Mechanical, North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China;Key Laboratory of Advanced Transducers and Intelligent Control Systems, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China)
出处
《机床与液压》
北大核心
2019年第18期34-38,共5页
Machine Tool & Hydraulics
基金
Key scientific research project foundation of Universities and Colleges in Henan Province(16A460020)
High level talent research starting project foundation of NCWU(201531)
Scientific and technological project foundation in Henan province(182102210063)~~
关键词
插装形锥阀
多物理场耦合
配合副
变形
Cartridge poppet valve
Multi-physics coupling
Fitting pairs
Deformation
