摘要
以某溢流补油阀为基础进行高压化结构设计,建立高压溢流补油阀三维模型,利用CFD软件分析阀内部流场的速度分布、压力以及稳态液动力变化。仿真表明:锥形阀口区域的速度和压力梯度较大,主阀体出油口附近的直角区域容易出现小型旋涡等不良现象,此外,当阀芯位移达到0.5 mm时,稳态液动力达到最大值。研制了额定压力为45 MPa的溢流补油阀样件,测试结果表明:在入口压力42 MPa条件下的高压溢流补油阀具有快速的动态响应,超调量为2.5 MPa,响应时间为0.047s;补油流量从10 L/min增加到80 L/min时,压损从0.073 MPa增大到0.15 MPa,为高压溢流补油阀优化设计提供了定量分析依据。
Based on an relief boost valve,the high-pressure structure design is carried out,and the three-dimensional model of the high-pressure relief boost valve is established.The velocity distribution,pressure change and steady flow force change of the flow field in the valve are analyzed by CFD software.The simulation results show that the velocity and pressure gradient in the conical valve port area are large,and the undesirable phenomena such as small vortices are easy to appear at the right angle near the oil outlet of the main valve body.In addition,when the valve displacement reaches 0.5 mm,the steady flow force reaches the maximum.In order to further verify the performance of the high-pressure relief boost valve,a sample of the relief boost valve with rated pressure of 45 MPa is developed.The test results show that under the condition of an inlet pressure of 42 MPa,the high-pressure overflow oil replenishment valve has a fast dynamic response,with an overshoot of 2.5 MPa and a response time of 0.047 s.When the oil replenishment flow rate increased from 10 L/min to 80 L/min,the pressure loss increased from 0.073 MPa to 0.15 MPa.This study provides a quantitative analysis basis for the optimization design of high-pressure overflow oil replenishment valves.
作者
岳向阳
包倩倩
王涛
汪浒江
吴超
郝惠敏
YUE Xiangyang;BAO Qianqian;WANG Tao;WANG Hujiang;WU Chao;HAO Huimin(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024;North China Vehicle Research Institute,Beijing 100072)
出处
《液压与气动》
北大核心
2025年第2期128-134,共7页
Chinese Hydraulics & Pneumatics
基金
山西省基础研究计划联合资助项目(太重)(TZLH20230818010)。
