定量泵负载敏感系统中三通流量阀的阻尼特性分析
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摘要
分析了定量泵负载敏感系统中三通流量阀的机械结构和调节原理。建立了三通流量阀中阻尼孔的特性分析模型与三通流量阀压力补偿过程中容腔压力变化的数学模型。用Matlab软件对三通流量阀中影响压力变化的主要结构参数进行了仿真,分析了三通流量阀的阻尼孔直径、阻尼孔长度、左腔容积以及阀芯开口流量增益对其左腔压力变化产生的影响,得出了再设计三通流量阀时阻尼孔、容腔体积和阀芯开口形式应选择合适的尺寸与结构的结论。为定量泵系统中三通流量阀的设计提供了理论依据。
Analyzes the adjusting principle and structure of the 3-way flow valve. The 3-way flow valve is used in the quantitative pump load sensing hydraulic system. The analytical model of the damping hole's characteristic is built and mathematical model of cavity's dynamic-pressure is established in the process of the 3-way flow valve having a load sensing. Then the main structure parameters of the 3-way flow valve is simulated by Matlab software. Those structure parameters can influence the pressure's variation. It concludes 4 parameters can affects the 3-way flow valve's left-pressure in different ways. The damping hole's diameter,the damping hole's length,the left cavity,the valve core's flow-gain of the 3-way flow valve are analyzed. The conclusion that when designing the 3-way flow valve,the damping hole's size,the left cavity's structure,the valve core's shape should be suitable is produced. This work may offer some theoretical basis for the 3-way flow valve's design which used in the quantitative pump load sensing hydraulic system.
Analyzes the adjusting principle and structure of the 3-way flow valve. The 3-way flow valve is used in the quantitative pump load sensing hydraulic system. The analytical model of the damping hole's characteristic is built and mathematical model of cavity's dynamic-pressure is established in the process of the 3-way flow valve having a load sensing. Then the main structure parameters of the 3-way flow valve is simulated by Matlab software. Those structure parameters can influence the pressure's variation. It concludes 4 parameters can affects the 3-way flow valve's left-pressure in different ways. The damping hole's diameter,the damping hole's length,the left cavity,the valve core's flow-gain of the 3-way flow valve are analyzed. The conclusion that when designing the 3-way flow valve,the damping hole's size,the left cavity's structure,the valve core's shape should be suitable is produced. This work may offer some theoretical basis for the 3-way flow valve's design which used in the quantitative pump load sensing hydraulic system.
引文
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[9]LUAN Wenbo,LUAN Xinlin.The Research and Application of Load Sensing Hydraulic System on Construction Machinery.Proceedings of the 2011 International Conference on Advances in Construction Machinery and Vehicle Engineering[C].[S.l.]:[s.n.],2011:225-229.
[10]颜荣庆,李自光,贺尚红.现代工程机械液压与液力系统[M].北京:人民交通出版社,2015.
[11]薛定宇,陈阳泉.基于MATLAB/Simulink的系统仿真技术与应用[M].北京:清华大学出版社,2010.
[2]宣惠平,姚立波,刘飞.负荷传感控制系统及其分析[J].工兵装备研究,2007,2(1):30-34.
[3]罗艳蕾,陈伦军.负荷传感出口压力补偿回路的阻尼特性研究[J].中国机械工程,2013,19(4):2573-2576.
[4]马春峰,隋冬枝.阀前补偿和阀后补偿的特点及应用[J].煤矿机械,2014(8):208-210.
[5]章鑫,王力,赵友军.挖掘机负荷传感液压系统优缺点的研究分析[J].煤矿机械,2012,33(3):183-185.
[6]赵建华,高殿荣.基于流量控制阀的液体静压导轨动态特性分析[J].中国工程机械,2013,24(4):444-451.
[7]毛智勇.三通压力补偿器的设计与研究[J].液压与气动,2011(3):15-16.
[8]李玉春,王会来,尤晓明.电液控制阀中先导阀与阻尼孔匹配性的实验研究[J].煤矿机电,2010(6):25-27.
[9]LUAN Wenbo,LUAN Xinlin.The Research and Application of Load Sensing Hydraulic System on Construction Machinery.Proceedings of the 2011 International Conference on Advances in Construction Machinery and Vehicle Engineering[C].[S.l.]:[s.n.],2011:225-229.
[10]颜荣庆,李自光,贺尚红.现代工程机械液压与液力系统[M].北京:人民交通出版社,2015.
[11]薛定宇,陈阳泉.基于MATLAB/Simulink的系统仿真技术与应用[M].北京:清华大学出版社,2010.