新型泥浆泵液压系统设计与仿真分析  

Design and Analysis of the Hydraulic System of a Mud Pump

作　　者：惠记庄[1] 罗联社[2] 纪真[1] 邹亚科[1] 

机构地区：[1]长安大学道路施工技术与装备教育部重点实验室,西安710064 [2]西北工业大学科技处,西安710072

出　　处：《机械科学与技术》2009年第10期1271-1274,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：陕西省自然科学基础研究计划项目(SJ08E206)

摘　　要：传统的泥浆泵动力端采用曲柄连杆机构,液力端活塞的运行速度变化近似于正弦曲线,排出泥浆的瞬时流量和压力也按正弦曲线波动,脉动量大,排量不稳定。笔者通过对动力端进行全新设计,利用电液比例阀控制自动换向,并且增加一套压力平衡式液力端,开发出一种新型的液压驱动泥浆泵,可使泵缸运动平稳、流量稳定、寿命提高。应用系统协同仿真软件AMESim对液压系统的动态特性进行仿真分析,结果表明:动力端采用液压系统,功能大大优于机械驱动;合理的布置3个泵缸活塞初始位置以及缸速比,液压泥浆泵流量就会稳定,无脉动;仿真软件AMESim对液压系统的动态特性仿真与试验结果基本吻合。Traditional pump-side driving port uses crank connecting rod mechanism, and the hydraulic piston-side speed change is similar to a sine curve, and the mud flow and the instantaneous pressure fluctuations are also in a sine curve, resulting in a large amount of pulse of displacement and instability. In the power side, we improve the use of electro-hydraulic proportional control valve to automatically change and increase the pressure of the hydraulic balanced side, then the new hydraulic-driven pump shows smooth cylinder movement, flow stability, and improved life expectancy. We analyse the dynamic characteristics of the hydraulic system by AMESim. The results show that if hydraulic power systems are adopted in the powerside, the performance is much better than mechanical drive, and reasonable layout of the three-cylinder piston pump initial position and proper cylinder speed ratio will result in the stability of hydraulic mud flow with no pulse. The simulation results of AMEsim are in good agreement with test results.

关 键 词：泥浆泵 液压系统 AMESIM软件 仿真 

分 类 号：TH321[机械工程—机械制造及自动化]