一种节能型电磁换向阀液压冲击仿真  

Hydraulic Impact Simulation of Energy Saving Solenoid Directional Valve

作　　者：何沛恒 邓斌[1] 杨帆[2] 王奇[1] HE Pei-heng;DENG Bin;YANG Fan;WANG Qi(Engineering Research Center of Advanced Drive-energy Saving Technology of Ministry of Education,Southwest Jiaotong University,Chengdu,Sichuan 610031;Ministry of Education Key Laboratory of Testing Technology for Manufacturing Process,Southwest University of Science and Technology,Mianyang,Sichuan 621010)

机构地区：[1]西南交通大学先进驱动节能技术教育部工程研究中心,四川成都610031 [2]西南科技大学制造过程测试技术教育部重点实验室,四川绵阳621010

出　　处：《液压与气动》2021年第7期143-153,共11页Chinese Hydraulics & Pneumatics

摘　　要：为应对传统液压电磁换向阀不能长期供电和油液对温升敏感等工况,以三位四通液压换向阀为载体设计一种新型三稳态电磁换向机构,机构快速换向性使得阀口迅速关闭导致管路产生液压冲击,故引入磁流变阻尼技术,将“剪切-阀”式磁流变阻尼装置沿阀芯轴线串联,通过控制阀口关闭速率以缓解液压冲击对系统的不良影响。仿真结果表明:主动控制阻尼的换向过程随着阻尼力的增大而放缓,管路液压冲击峰值随之减小且振荡时间随之缩短,但由于换向时间较短,变阻尼装置响应能力有限,不建议其采用闭环控制。In order to cope with the traditional hydraulic solenoid reversing valve can not supply power for a long time and oil is sensitive to temperature rise,a new three-steady solenoid reversing mechanism is designed with three-position four-way hydraulic reversing valve as the carrier.The rapid reversing property of the mechanism makes the valve port close quickly,resulting in hydraulic shock in the pipeline.Therefore,the magnetorheological damping technology was introduced,and the“shear-valve”magnetorheological damping device was connected in series along the axis of the spool to control the closing rate of the valve port to alleviate the adverse effects of hydraulic shock on the system.The simulation results of AMESim show that the reversing process of active control damping slows down with the increase of damping force,the peak value of pipeline hydraulic shock decreases and the oscillation time decreases.However,due to the short commutation time and limited response capacity of variable damping device,closed-loop control is not recommended.

关 键 词：液压换向阀 三稳态电磁换向机构 液压冲击 磁流变阻尼 AMESIM 

分 类 号：TH137[机械工程—机械制造及自动化]