调压限压组合溢流阀调压过程的动态特性研究  

Analysis on dynamic characteristics of pressure control of pressure-regulating and pressure-limiting combined relief valve

作　　者：刘亚杰 施伟伟 黄志祥 LIU Yajie;SHI Weiwei;HUANG Zhixiang(School of Mechanical Engineering,Anhui University of Science&Technology,Huainan 232001,Anhui,China)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《矿山机械》2022年第7期51-55,共5页Mining & Processing Equipment

基　　金：安徽高校协同创新项目(GXXT-2020-061);国家自然科学基金项目(51575002)。

摘　　要：通过建立调压限压组合溢流阀的动力学模型,考察不同调压阀芯受力端面面积配比以及敏感腔容积对调压限压组合溢流阀动态性能的影响。结果表明:在结构参数相同的情况下,调压限压组合溢流阀超调率为5.8%,响应时间为40 ms,优于先导式溢流阀,有效改善了溢流阀高压大流量工况下振动、压力波动大等失稳问题;当调压阀芯凸缘上侧有效受力面积以及尾椎受力端面积之和等于调压阀芯凸缘下侧有效受力面积时,溢流阀的动态性能最优;与调压阀敏感腔容积为15 cm^(3)相比,敏感腔容积为10 cm^(3)时超调量降低了4%,达到峰值时间降低了33%。After the dynamic model of the pressure-regulating and pressure-limiting combined relief valve being established,the influence of the area ratio of stressed end of the pressure-regulating valve spool and the volume of sensitive cavity on the dynamic characteristics of the pressure-regulating and pressure-limiting combined relief valve was investigated.The results showed:at the same structural parameters,the overshoot of the pressure-regulating and pressure-limiting combined relief valve was 5.8%,and the response duration was 40 ms,which was superior to those of the pilot relief valve,and effectively improved the instability issues such as large vibration and large pressure fluctuation of the relief valve in high pressure and large flow mode;while the sum of the effective stressed area of the upper side of the flange of the pressure-regulating valve spool and the area of the stressed end of the tail cone equaling to the effective stressed area of the lower side of the flange of the pressure-regulating valve spool,the dynamic performance of the relief valve was the best;compared with the pressure-regulating valve with 15 cm^(3) volume of the sensitive cavity,the overshoot of the pressure-regulating valve with 10 cm^(3) volume of the sensitive cavity reduced by 4%,the peak reaching duration reduced by 33%.

关 键 词：调压限压组合溢流阀 面积配比 敏感腔体积 稳定性 

分 类 号：TH137[机械工程—机械制造及自动化]