径向柱塞泵轴配流副液动力矩特性研究
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摘要
为了研发高性能的海水径向柱塞泵,建立了轴配流副的三维模型,对配流副的水力学特性进行研究,分析了液动力矩的产生机理,进一步建立配流轴液动力矩的物理模型,运用MATLAB软件模拟仿真液动力矩的变化规律。搭建试验台架,并采用开通流孔的方式,减小液压侧向力对试验结果的影响,在海水介质条件下,测试了配流轴的液动力矩随转速和配流窗口压差的变化,验证了配流副的液动力矩模型的准确性。结果表明,配流副转速较低时,所受液动力矩的波动较大,转速较高时,所受液动力矩较为平稳;全平衡结构配流轴所受液动力矩不随转角变化,只与配流轴转速和配流窗口的压差有关。
In order to develop a high performance seawater radial plunger pump,we study the hydrodynamic characteristics of distribution pair and analyze the mechanism of hydrodynamic moment by establishing a three-dimensional model of flow-distribution pairs,and further establish the hydrodynamic moment's physical model of distribution shaft and simulate the variation law of hydrodynamic moment by using the software MATLAB. A test bench is built,and we can make the effect of hydraulic lateral force on the test results reduce by opening a flow channel. In the conditions of different rotate speeds and distribution port pressures,the change of the hydrodynamic moment of flow-distribution pairs is measured,and the accuracy of the hydraulic torque model of the pairs is verified. The results show that the fluid dynamic torque is more volatile when the rotational speed is lower; accordingly,the fluid dynamic torque is relatively stable when the rotational speed is higher; the fluid dynamic moment of the full balance distribution shaft does not vary with the angle of rotation; however,it is only related to the shaft rotating speed and the differential pressure of the distribution window.
In order to develop a high performance seawater radial plunger pump,we study the hydrodynamic characteristics of distribution pair and analyze the mechanism of hydrodynamic moment by establishing a three-dimensional model of flow-distribution pairs,and further establish the hydrodynamic moment's physical model of distribution shaft and simulate the variation law of hydrodynamic moment by using the software MATLAB. A test bench is built,and we can make the effect of hydraulic lateral force on the test results reduce by opening a flow channel. In the conditions of different rotate speeds and distribution port pressures,the change of the hydrodynamic moment of flow-distribution pairs is measured,and the accuracy of the hydraulic torque model of the pairs is verified. The results show that the fluid dynamic torque is more volatile when the rotational speed is lower; accordingly,the fluid dynamic torque is relatively stable when the rotational speed is higher; the fluid dynamic moment of the full balance distribution shaft does not vary with the angle of rotation; however,it is only related to the shaft rotating speed and the differential pressure of the distribution window.
引文
[1]杨华勇,周华.水液压技术研究新进展[J].液压与气动,2013,(2):1-6.YANG Huayong,ZHOU Hua.New Achievements in Water Hydraulics[J].Chinese Hydraulics&Pneumatics,2013,(2):1-6.
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[3]邹云飞,荆崇波.径向柱塞泵配流轴受力平衡性分析[J].机床与液压,2009,37(11):78-79.ZOU Yunfei,JING Chongbo.Force Analysis of Flow Divider Pintle in Radial Piston Pump[J].Machine Tool&Hydraulics,2009,37(11):78-79.
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[9]李佳鑫,周华,杨华勇.轴向柱塞泵配流盘力和力矩的动态分析[C]//全国流体动力及控制工程学术会议.2000.LI Jiaxin,ZHOU Hua,YANG Huayong.Dynamic Analysis of Force and Torque of Valve Plate of Axial Piston Pump[C]//National Conference on Fluid Power Transmission and Control.2000.
[10]李壮云,贺小峰,万会雄.液压元件与系统[M].北京:机械工业出版社,2011.LI Zhuangyun,HE Xiaofeng,WAN Huixiong.Hydraulic Components and Systems[M].Beijing:China Machine Press,2011.
[2]赵桂玲.海水淡化液压柱塞泵关键摩擦副流场特性的理论研究[D].武汉:华中科技大学,2009.ZHAO Guiling.Theoretic Research on the Flow Field Properties of the Key Friction Pairs in a Seawater Hydraulic Piston Pump for Desalination[D].Wuhan:Huazhong University of Science and Technology,2009.
[3]邹云飞,荆崇波.径向柱塞泵配流轴受力平衡性分析[J].机床与液压,2009,37(11):78-79.ZOU Yunfei,JING Chongbo.Force Analysis of Flow Divider Pintle in Radial Piston Pump[J].Machine Tool&Hydraulics,2009,37(11):78-79.
[4]杨华勇,艾青林,周华.轴向柱塞泵配流副润滑特性的研究进展[J].中国机械工程,2004,15(17):1587-1593.YANG Huayong,AI Qinglin,ZHOU Hua.Development of Lubrication of Port Plate/Cylinder Block in Axial Piston Pump[J].China Mechanical Engineering,2004,15(17):1587-1593.
[5]裘信国.径向柱塞式液压泵受力分析及其配流机构的研究[D].杭州:浙江工业大学,2005.QIN Xinguo.Research on Contact Stress of the Key Components and the Distributor Machanism of Radial Piston Pump[D].Hangzhou:Zhejiang University of Technology,2005.
[6]魏聪梅,安高成,王明智,等.径向柱塞泵配流轴的静压平衡设计[C]//2001年中国机械工程学会年会暨全国特种加工学术年会.2001.WEI Congmei,AN Gaocheng,WANG Mingzhi,et al.The Design of Flow Divider Pintle by Static Pressure Balance in Radial Piston Pump[C]//2001 Annual Conference of Chinese Mechanical Engineering Society and National Symposium on Non-traditional Machining.2001.
[7]谈宏华,陈卓如,李元勋,等.倾侧力矩全平衡端面配流副机理实验研究[J].中国机械工程,1998,9(10):46-49.TAN Honghua,CHEN Zhuoru,LI Yuanxun,et al.Experimental Study on the Mechanism of the Tilting Moment Balancing Completely of Plate Valve Pair[J].China Mechanical Engineering,1988,9(10):46-49.
[8]艾青林,周华,张增猛,等.轴向柱塞泵配流副与滑靴副润滑特性试验系统的研制[J].液压与气动,2004,(11):22-25.AI Qinglin,ZHOU Hua,ZHANG Zengmeng,et al.Development of Lubricating Characteristics Testing System of Friction Pair in Axial Piston Pump[J].Chinese Hydraulics&Pneumatics,2004,(11):22-25.
[9]李佳鑫,周华,杨华勇.轴向柱塞泵配流盘力和力矩的动态分析[C]//全国流体动力及控制工程学术会议.2000.LI Jiaxin,ZHOU Hua,YANG Huayong.Dynamic Analysis of Force and Torque of Valve Plate of Axial Piston Pump[C]//National Conference on Fluid Power Transmission and Control.2000.
[10]李壮云,贺小峰,万会雄.液压元件与系统[M].北京:机械工业出版社,2011.LI Zhuangyun,HE Xiaofeng,WAN Huixiong.Hydraulic Components and Systems[M].Beijing:China Machine Press,2011.