李明生,叶 进,谢 斌,杨 仕,曾百功,柳 剑.双泵合流系统电-液联控合流阀设计与试验[J].农业机械学报,2018,49(9):353-360.
LI Mingsheng,YE Jin,XIE Bin,YANG Shi,ZENG Baigong,LIU Jian.Design and Test of Electric hydraulic Confluence Valve in Double Pump Confluence System[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(9):353-360.
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双泵合流系统电-液联控合流阀设计与试验   [下载全文]
Design and Test of Electric hydraulic Confluence Valve in Double Pump Confluence System   [Download Pdf][in English]
投稿时间:2018-03-26  
DOI:10.6041/j.issn.1000-1298.2018.09.041
中文关键词:  合流阀  电-液联控  设计  仿真  试验
基金项目:国家重点研发计划项目(2016YFD0701001)和中央高校基本科研业务费专项资金重点项目(XDJK2016B007)
作者单位
李明生 西南大学 
叶 进 西南大学 
谢 斌 中国农业大学 
杨 仕 西南大学 
曾百功 西南大学 
柳 剑 西南大学 
中文摘要:设计了一种电-液联控合流阀,电磁阀和换向阀内反馈压力联合控制合流阀的开启和关闭,能够实现油液的双向流动,使流量调速区间更大,执行机构动作更为迅速。基于传统方法确定阀结构参数,设计U型过渡节流槽,在Matlab中建立通流面积模型并进行计算。建立电-液联控合流阀AMESim模型并进行性能仿真,仿真结果表明,该阀控制流量范围为0~583×10-3m3/s,流量变化平稳;在8~11.5mm阀芯位移区间内,合流阀压力损失随阀口开度增加而降低,当阀芯位移为11.5mm时,合流阀压力损失为0.18MPa。起重机卷扬系统试验结果表明,该阀最大流量达6×10-3m3/s,最大流量下压力损失为0.27MPa;单泵供油模式下卷扬起升工况,卷筒最低稳定微动速度为1.9r/min,启动冲击为2.1MPa,停止冲击为2.2MPa,启动响应延时0.7s,停止响应延时0.8s;卷扬下落工况,卷筒最低稳定微动速度为2.17r/min,启动冲击为5.2MPa,停止冲击为1.9MPa,启动响应延时1.1s,停止响应延时0.75s。安装有该阀的双泵合流系统供油时,卷扬起升工况,卷筒最低稳定微动速度为2.17r/min,启动冲击为2.5MPa,停止冲击为0MPa,启动响应延时0.65s,停止响应延时0.28s;卷扬下落工况,卷筒最低稳定微动速度为1.57r/min,启动冲击为2.7MPa,停止冲击为1.6MPa,启动响应延时0.57s,停止响应延时0.31s。
LI Mingsheng  YE Jin  XIE Bin  YANG Shi  ZENG Baigong  LIU Jian
Southwest University,Southwest University,China Agricultural University,Southwest University,Southwest University and Southwest University
Key Words:confluence valve  electro hydraulic control  design  simulation  test
Abstract:In order to improve the efficiency and movement stability of the high power hydraulic system and reduce the hydraulic impact and energy loss, an electric hydraulic joint valve was designed. The opening and closing of the confluence valve was controlled by the joint control of feedback pressure in the solenoid valve and the reversing valve. The fluid in the valve flowed bi directional, so the flow speed range was large and the actuator was fast. The valve structure parameters obtained by traditional calculation, throttling groove was designed as U groove, and groove flow area was calculated in Matlab. The AMESim model of the electro hydraulic confluence valve was established and simulated, and the simulation results showed that the flow range of this valve was 0~5.83×10-3m3/s, and the flow rate was stable; in 8~11.5mm spool displacement range, the pressure loss of the confluence valve was decreased with the opening of the valve. When the spool displacement was 11.5mm, the pressure loss of the confluence valve was only 0.18MPa, and the energy loss was small. The test results of the hoisting system of crane showed that the maximum flow rate of the valve was 6×10-3m3/s, and the pressure loss at the maximum flow rate was 0.27MPa. In single pump mode when the hoist was lifted, the minimum stable fretting speed of the reel was 1.9r/min, the starting impact was 2.1MPa, the stop impact was 2.2MPa, the starting delay was 0.7s, and the stop delay was 0.8s; when the hoist was fallen, the minimum stable fretting speed of the reel was 2.17r/min, the starting impact was 5.2MPa, the stop impact was 1.9MPa, the starting delay was 1.1s, and the stop delay was 0.75s. In double pump mode when the hoist was lifted, the minimum stable fretting speed of the reel was 2.17r/min, the starting impact was 2.5MPa, the stop impact was zero, the starting delay was 0.65s, and the stop delay was 0.28s; when the hoist was fallen, the minimum stable fretting speed of the reel was 1.57r/min, the starting impact 〖JP2〗was 2.7MPa, the stop impact was 1.6MPa, the starting delay was 0.57s, and the stop delay was 0.31s.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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