文献类型：期刊文献

中文题名：节流阀双U阀槽二次结构优化后特性分析

英文题名：Characteristic analysis on throttle valve after secondary structure optimization of double U-groove

作者：周知进 李松波 罗先聪

第一作者：周知进

机构：[1]贵州理工学院机械工程学院,贵州贵阳550003;[2]江西理工大学机电工程学院,江西赣州341000

第一机构：贵州理工学院机械工程学院

年份：2023

卷号：40

期号：2

起止页码：252-257

中文期刊名：机电工程

外文期刊名：Journal of Mechanical & Electrical Engineering

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：国家自然科学基金资助项目(51479073);贵州省科学技术基金重点项目(黔科合基础〔2018〕1407)。

语种：中文

中文关键词：流量控制阀;节流槽结构;阀芯圆角;阀芯最高温度;阀芯最大变形量;阀口开度;阀口压差

外文关键词：flow control valve;throttling groove structure;valve core fillet;valve core maximum temperature;valve core maximum deformation;valve opening;valve pressure

摘要：在节流阀工作过程中,节流槽的结构形式影响节流阀阀芯温度与变形,进而影响阀芯的卡滞。通过对阀芯节流槽处结构进行优化,降低阀芯上的最高温度和最大变形量具有重要意义。为此,将呈线性接触的阀槽结构优化成小圆角接触的阀槽结构,并对优化后阀槽处最高温度与最大变形进行研究。首先,介绍了节流阀的结构,并对节流槽口结构圆角半径进行了优化;然后,采用数值仿真方法建立了节流阀三维模型,导入了有限元分析软件Workbench模块,定义了参数与边界,划分了网格,并对节流阀槽口圆角半径、不同阀口开度、压差对阀芯处最高温度与最大变形量影响进行了分析;最后,分析了圆角半径、阀口开度、阀口压差对阀槽温度与变形量的影响。研究结果表明:当圆角半径优化值为2 mm时,其阀芯上最高温度与最大变形量均处于极小值;当阀口开度为4 mm时,节流槽结构经二次优化后,阀芯上最高温度与最大变形量均有明显的降低;当阀口开度为6 mm时,阀芯上最高温度与最大变形量也有减小,且随着压差增大,其优化效果越好。节流槽阀芯圆角优化对降低第二节节流槽棱角处的最高温度与最大变形量均有较好效果,该结论可以为优化节流阀槽结构,降低阀芯最高温度与最大变形量提供参考。
During the working process of the throttle valve,the structure of the throttle groove affects the temperature and deformation of the throttle valve core,which in turn affects the sticking of the valve core.It is of great significance to reduce the maximum temperature and maximum deformation on the valve core by optimizing the structure at the valve core throttle groove.Therefore,the valve groove structure with linear contact was optimized into a valve groove structure with small fillet contact,and the maximum temperature and maximum deformation at the optimized valve groove were studied.Firstly,the structure of the throttle valve was introduced,and the radius of the fillet of the throttle notch structure was optimized.Then,the influences of fillet radius,valve opening,and valve pressure difference on the valve groove temperature and deformation were analyzed.Finally,the influences of the throttle valve notch fillet radius,different valve openings,and differential pressure on the maximum temperature and maximum deformation at the valve core were analyzed.The research results show that when the optimal value of the fillet radius is 2 mm,the maximum temperature and the maximum deformation on the valve core are both at a minimum value;when the valve opening is 4 mm,the throttling groove structure after the secondary optimization has a negative effect on the valve core.The maximum temperature and maximum deformation are significantly reduced;when the valve opening is 6 mm,the maximum temperature and maximum deformation on the valve core also decreased,and as the pressure difference increased,the optimization effect is better.It shows that the optimization of throttle groove spool fillet has a good effect on reducing the maximum temperature and maximum deformation at the corner of the second throttle groove,which provides a design basis for optimizing the throttle groove structure and reducing the maximum temperature and maximum deformation of the spool.