摘要
针对新型阀配流双排轴向柱塞泵配流阀的流量波动及滞后问题,建立高速开关阀数学模型及阀配流双排轴向柱塞泵AMESim仿真模型,分析柱塞运动频率、线圈匝数、阀芯质量和弹簧预紧力对配流阀动态特性的影响。结果表明:柱塞运动频率对配流阀的流量波动影响较小,但柱塞运动频率增加会加剧倒灌效应,导致容积效率下降;增加线圈匝数会引起电感系数增大,当线圈匝数从1400增加至2300,增加64.3%时,配流阀的流量波动仅为4.92%,阀芯关闭时间增加4 ms,开启时间未受影响;当弹簧预紧力增加到3倍时,配流阀的流量波动增大到5.5倍,阀芯关闭时间减少3 ms,开启时间增加1 ms;阀芯质量对配流阀的流量波动和阀芯启闭时间均呈正相关,阀芯质量增加至30 g时,配流阀的流量波动高达4.75%,阀芯关闭时间增加3 ms,开启时间增加1 ms。
In order to solve the problem of flow fluctuation and hysteresis of the distribution valve of the new valve distribution double-row axial piston pump,the mathematical model of high-speed on-off valve and the AMESim simulation model of the valve distribution double-row axial piston pump were established to analyze the influence of piston movement frequency,coil turns,spool mass and spring preload on the dynamic characteristics of the distribution valve.The results show that the frequency of piston movement has little effect on the flow fluctuation of the distribution valve,but the increase of piston movement frequency causes the aggravation of the backfill effect,resulting in the decrease of volumetric efficiency.When the number of coil turns increases from 1400 to 2300,increasing by 64.3%,the flow fluctuation of the distribution valve is only 4.92%,and the spool closing time increases by 4 ms,and the opening time is not affected.When the spring preload is increased to 3 times,the flow fluctuation of the distribution valve is increased to 5.5 times,the spool closing time is reduced by 3 ms,and the opening time is increased by 1 ms.The spool mass is positively correlated with the flow fluctuation of the distribution valve and the spool opening and closing time,and when the spool mass is increased to 30 g,the flow fluctuation of the distribution valve is increased by 4.75%,the spool closing time is increased by 3 ms,and the opening time is increased by 1 ms.
作者
王传礼
叶飞
何涛
高语罕
WANG Chuanli;YE Fei;HE Tao;GAO Yuhan(School of Mechatronics Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China;Anhui Provincial Key Laboratory of Mining Intelligent Equipment and Technology,Anhui University of Science and Technology,Huainan Anhui 232001,China)
出处
《机床与液压》
北大核心
2025年第1期132-139,共8页
Machine Tool & Hydraulics
基金
国家自然科学基金项目(52205041)
矿山智能装备与技术安徽省重点实验室开放基金项目(ZKSYS202101)
安徽省高校优秀青年人才支持计划项目(gxyq2022017)。
关键词
阀配流
柱塞泵
流量波动
滞后
valve distribution
piston pumps
flow fluctuation
hysteresis
