转套式配流系统U型减振槽结构及其对流场影响
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摘要
减振槽是针对液压系统设计的一种降低冲击的凹槽。针对转套式配流系统的工作特点,在转套结构上设计了一种U型截面减振槽结构。建立工作过程中的配流特性数学模型,分析不同阶段的通流面积,重点研究减振槽在全流场数值模拟中对流量脉动、压力脉动、速度分布的影响,结果表明:U型减振槽结构流场流态为湍流,压力脉动较大,有压力冲击和降低的现象出现,但U型减振槽流场流速小、流向稳定,很大程度上降低了流量脉动,对流场具有良好的稳定作用。U型等截面减振槽结构的整体分析具有重要工程应用价值,为结构优化提供了理论依据。
The damping groove is a reduced impact groove designed for the hydraulic system. For the working characteristics of rotating-sleeve distributing-flow system,a novel U-shaped uniform-section damping grooves is proposed. The mathematical modeling of its distribution characteristics is established. Then orifice area is analyzed under different stages. Particularly,this paper mainly researches on the influence of the damping grooves on the flow pulsation,pump chamber pressure and velocity vector in full flow field.The results show that the flow regime of its flow flied is turbulent flow. In addition,the terrible pressure fluctuation,pressure impact and pressure decay appear in it,but little flow velocity and straightforward flow direction are beneficial to flow pulsation and flow flied.The analysis of U-shaped damping grooves is of important engineering application value and the theoretical basis is provided for the structural optimization.
The damping groove is a reduced impact groove designed for the hydraulic system. For the working characteristics of rotating-sleeve distributing-flow system,a novel U-shaped uniform-section damping grooves is proposed. The mathematical modeling of its distribution characteristics is established. Then orifice area is analyzed under different stages. Particularly,this paper mainly researches on the influence of the damping grooves on the flow pulsation,pump chamber pressure and velocity vector in full flow field.The results show that the flow regime of its flow flied is turbulent flow. In addition,the terrible pressure fluctuation,pressure impact and pressure decay appear in it,but little flow velocity and straightforward flow direction are beneficial to flow pulsation and flow flied.The analysis of U-shaped damping grooves is of important engineering application value and the theoretical basis is provided for the structural optimization.
引文
[1]那成烈.轴向柱塞泵可压缩流体配流原理[M].北京:兵器工业出版社,2003.
[2]林静,孙明智.轴向柱塞泵配流盘结构对流量脉动的影响[J].流体传动与控制,2007(3):32-35.
[3]郜立焕,刘世亮,柴玉东,等.轴向柱塞泵排油腔减振槽的CFD解析[J].兰州理工大学学报,2008,34(4):61-64.
[4]杨阳.轴向柱塞泵平面配流的降噪研究[D].兰州:兰州理工大学,2009.
[5]马金河,王芊.基于新型减振槽的变量叶片泵配流盘的设计[J].液压气动与密封,2008(3):20-22.
[6]马金河,邢美峰,刘红.基于半圆锥型减振槽的变量叶片泵配流盘的设计[J].机床与液压,2008(6):85-87.
[7]X Zhang,J Cho,S S Nair,et al. New swash plate damping model for hydraulic axial piston pump[J]. Journal of Dynamic Systems Measurement&Control,2001,123(3):463-470.
[8]A Johansson,J O Palmberg,K E Rydberg. Cross angle-a design feature for reduction noise and vibration in hydrostatic piston pump[C]. Proceedings of the fifth international conference on fluid power transmission and control,Hangzhou,China,2001.
[9]N D Manring. The discharge flow ripple of an axial-piston swash-plate type hydrostatic pump[J]. Journal of Dynamic Systems Measurement&Control,2000,122(2),263-268.
[10]R M Harris,K A Edge,D G Tilley. The suction dynamics of positive displacement axial piston pumps[J]. Journal of Dynamic Systems Measurement&Control,1992,116(2):281-287.
[11] K. Yamaguchi,T. Yamamoto. Noises generated by hydraulic pumps and their control method[J]. Mitsubishi Technical Review,1976:1-13.
[12]A. Yamaguchi. Formation of a fluid film between a valve plate and a cylinder block of piston pumps and motors(2nd report,a Valve Plate with Hydrostatic Pads)[J]. Japan Soc Mechanical Engineers Sanshin Hokusei Bldg,1987,249:87-92.
[13]A. Yamaguchi. Tribology of hydraulic pumps[J]. ASTM special technical publication,1997,1310:49-61.
[14]张延君,张洪信,赵清海,等.往复柱塞泵转套式配流系统泵腔流场仿真研究[J].液压与气动,2016(11):31-35.
[15]张洪信,程联军,张铁柱,等.往复柱塞泵转套式配流系统的结构原理[J].流体机械,2015,43(8):48-51.
[2]林静,孙明智.轴向柱塞泵配流盘结构对流量脉动的影响[J].流体传动与控制,2007(3):32-35.
[3]郜立焕,刘世亮,柴玉东,等.轴向柱塞泵排油腔减振槽的CFD解析[J].兰州理工大学学报,2008,34(4):61-64.
[4]杨阳.轴向柱塞泵平面配流的降噪研究[D].兰州:兰州理工大学,2009.
[5]马金河,王芊.基于新型减振槽的变量叶片泵配流盘的设计[J].液压气动与密封,2008(3):20-22.
[6]马金河,邢美峰,刘红.基于半圆锥型减振槽的变量叶片泵配流盘的设计[J].机床与液压,2008(6):85-87.
[7]X Zhang,J Cho,S S Nair,et al. New swash plate damping model for hydraulic axial piston pump[J]. Journal of Dynamic Systems Measurement&Control,2001,123(3):463-470.
[8]A Johansson,J O Palmberg,K E Rydberg. Cross angle-a design feature for reduction noise and vibration in hydrostatic piston pump[C]. Proceedings of the fifth international conference on fluid power transmission and control,Hangzhou,China,2001.
[9]N D Manring. The discharge flow ripple of an axial-piston swash-plate type hydrostatic pump[J]. Journal of Dynamic Systems Measurement&Control,2000,122(2),263-268.
[10]R M Harris,K A Edge,D G Tilley. The suction dynamics of positive displacement axial piston pumps[J]. Journal of Dynamic Systems Measurement&Control,1992,116(2):281-287.
[11] K. Yamaguchi,T. Yamamoto. Noises generated by hydraulic pumps and their control method[J]. Mitsubishi Technical Review,1976:1-13.
[12]A. Yamaguchi. Formation of a fluid film between a valve plate and a cylinder block of piston pumps and motors(2nd report,a Valve Plate with Hydrostatic Pads)[J]. Japan Soc Mechanical Engineers Sanshin Hokusei Bldg,1987,249:87-92.
[13]A. Yamaguchi. Tribology of hydraulic pumps[J]. ASTM special technical publication,1997,1310:49-61.
[14]张延君,张洪信,赵清海,等.往复柱塞泵转套式配流系统泵腔流场仿真研究[J].液压与气动,2016(11):31-35.
[15]张洪信,程联军,张铁柱,等.往复柱塞泵转套式配流系统的结构原理[J].流体机械,2015,43(8):48-51.