大通径液控单向阀仿真与实验研究  

Simulation and Research on Large Diameter Hydraulically Pilot Operated Check Valve

作　　者：王亚强 赵春丽 宁博[1] 丘铭军[1] 刘耀卓 张嘉方 WANG Ya-qiang;ZHAO Chun-li;NING Bo;QIU Ming-jun;LIU Yao-zhuo;ZHANG Jia-fang(Xi'an Heavy Machinery High-end Hydraulic Technology and Equipment Engineering Technology Research Center,China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an 710032,China)

机构地区：[1]中国重型机械研究院股份公司,西安市重型机械高端液压技术与装备工程技术研究中心,陕西西安710032

出　　处：《液压气动与密封》2025年第3期90-96,共7页Hydraulics Pneumatics & Seals

摘　　要：在对某钢厂电弧炉设备调试过程中发现推料机构液压控制回路经常出现系统卡滞问题,经反复实验及深入探究,初步发现是由大通径液控单向阀锥形阀芯两端有效面积差较大造成的反向过度锁死问题。利用AMESim平台搭建液压控制系统模型,仿真研究液控单向阀对整个液压回路的影响。仿真结果与实际卡滞时的现象非常接近,表明模型搭建的合理性;同时得出结论:液控单向阀在非独立控制的情况下,正向流通时的出口压力随锥形阀芯有效面积比(出口侧面积与进口侧面积比)的增大而等比减小,随其进口压力的增大而等比增大;最终,为此液控单向阀增加了独立控制回路后,反向过度锁死问题消失,系统再无卡滞。可为后续故障判断,新设备开发提供理论基础和经验指导。In the process of debugging the arc furnace equipment in a steel plant,it is found that the hydraulic control circuit of the pusher mechanism often has the problem of system stuck.Through repeated experiments and in-depth exploration,it is preliminarily found that the reverse excessive locking problem caused by the large difference in the effective area at both ends of the cone valve core of the large diameter hydraulically pilot operated check valve.The hydraulic control system model is built on AMESim platform,and the influence of hydraulic control check valve on the whole hydraulic circuit is simulated.The simulation results are very close to the actual stuck phenomena,indicating the rationality of the model.At the same time,it is concluded that under the condition of non independent control,the outlet pressure of the hydraulically pilot operated check valve in positive flow decreases proportionally with the increase of the effective area ratio of the cone valve core(the area ratio of the outlet side to the inlet side),and increases proportionally with the increase of the inlet pressure.Finally,after adding independent control circuit to the hydraulic control check valve,the problem of excessive reverse locking disappears,and the system is no longer stuck.This paper can provide theoretical basis and empirical guidance for subsequent fault judgment and new equipment development.

关 键 词：大通径液控单向阀 AMESIM 系统卡滞 电弧炉 

分 类 号：TH137[机械工程—机械制造及自动化]