转套式配流系统三角减振槽结构及其对流场影响
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摘要
针对转套式配流系统在高低压转换时存在的冲击、噪声等问题,提出一种三角形截面减振槽结构。根据配流系统的结构特点,建立减振槽数学模型,分析减振槽在不同阶段的通流面积;并对配流系统全流场进行数值分析与可视化研究,分析减振槽对流量脉动、泵腔压力、速度矢量的影响规律。结果表明:三角形截面减振槽结构流场流态为湍流,流场流速较大、流向紊乱,对流量脉动影响较严重,出现流量冲击和回流现象,但很大程度上降低了压力脉动,对压力场具有良好的稳定作用。
Aiming at the problems of shock and noise existing in the transforming moment between high and low pressure areas,a novel triangular uniform-section damping groove is proposed. First,The mathematical modeling of flow characteristic about the damping grooves is established and orifice area is simulated in different stages based on structural characteristic of rotating-sleeve distributing-flow system. Then,flow pulsation,pump chamber pressure and velocity vector are analyzed in sight of numerical analysis and visualization research with full flow field,respectively. The results show that the triangular damping groove flow regime of flow flied is turbulent flow. In addition,triangular damping groove has serious flow pulsation,large flow velocity and disordered flow direction resulting in flow impact and backflow,but stable pressure caused by flow backward is beneficial to pressure pulsation and pressure flied.
Aiming at the problems of shock and noise existing in the transforming moment between high and low pressure areas,a novel triangular uniform-section damping groove is proposed. First,The mathematical modeling of flow characteristic about the damping grooves is established and orifice area is simulated in different stages based on structural characteristic of rotating-sleeve distributing-flow system. Then,flow pulsation,pump chamber pressure and velocity vector are analyzed in sight of numerical analysis and visualization research with full flow field,respectively. The results show that the triangular damping groove flow regime of flow flied is turbulent flow. In addition,triangular damping groove has serious flow pulsation,large flow velocity and disordered flow direction resulting in flow impact and backflow,but stable pressure caused by flow backward is beneficial to pressure pulsation and pressure flied.
引文
[1]冀宏,王峥嵘,张玮,等.减振槽型式对转向叶片泵配流冲击的影响[J].液压气动与密封,2006,(4):41-43Ji H,Wang Z R,Zhang W,et al.Influence of silencing groove geometry on pressure transient within steering vane pump[J].Hydraulics Pneumatics&Seals,2006,(4):41-43(in Chinese)
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[4]李向辉,王峥嵘,王建森.减振槽型式对转向叶片泵瞬时流量的影响[J].液压与气动,2006,(12):74-76Li X H,Wang Z R,Wang J S.Influence of silencing groove geometry on discharging flow within steering vane pump[J].Chinese Hydraulics&Pneumatics,2006,(12):74-76(in Chinese)
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[7]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,2008,36(6):85-87Ma J H,Xing M F,Liu H.Design of port plate of variable vane pump based on semi-cone damping groove[J].Machine Tool&Hydraulics,2008,36(6):85-87(in Chinese)
[8]Helgestad B O,Foster K,Bannister F K.Pressure transients in an axial piston hydraulic pump[J].Proceedings of the Institution of Mechanical Engineers,1974,188(17):189-199
[9]Yamauchi K,Yamamoto T.Noises generated by hydraulic pumps and their control method[J].Mitsubishi Technical Review,1976,13(1):1-13
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[11]Yamaguchi A.Tribology of hydraulic pumps[J].ASTM Special Technical Publication,1997,1310:49-61
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[13]Pettersson M E,Weddfelt K G,Palmberg J O S.Methods of reducing flow ripple from fluid power piston pumps-a theoretical approach[J].SAE Transactions,1991,100(2):158-167
[14]马金河,王芊.双作用径向柱塞泵半圆锥型减振槽的研究[J].液压与气动,2008,(5):71-73Ma J H,Wang Q.Research on semi-cone damping groove of double acting radial piston pumps[J].Chinese Hydraulics&Pneumatics,2008,(5):71-73(in Chinese)
[15]甘海.轴向柱塞泵配流副流场仿真及三角减振槽参数特性分析[D].哈尔滨:哈尔滨工业大学,2014Gan H.Simulation of Flow filed for axial piston pump cylinder block-valve plate interface and parameters characteristic analysis of triangular relief groove[D].Harbin:Harbin Institute of Technology,2014(in Chinese)
[16]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):31-35Zhang Y J,Zhang H X,Zhao Q H,et al.Simulation of pump chamber flow field for rotating-sleeve distributingflow system for reciprocating plunger pump[J].Chinese Hydraulics&Pneumatics,2016,(11):31-35(in Chinese)
[17]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):48-51Zhang H X,Cheng L J,Zhang T Z,et al.Structural principle of rotating-sleeve distributing-flow system for reciprocating plunger pump[J].Fluid Machinery,2015,43(8):48-51(in Chinese)
[2]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,2003Na C L.Distribution principle in compressible fluid of axial piston pump[M].Beijing:The Publishing House of Ordnance Industry,2003(in Chinese)
[3]杨长安,杨国来,刘志刚,等.三角槽节流孔角度和孔径对气蚀的影响[J].机床与液压,2010,38(2):48-49,52Yang C A,Yang G L,Liu Z G,et al.Influence of angle and height on cavitation of triangle-notch orifice[J].Machine Tool&Hydraulics,2010,38(2):48-49,52(in Chinese)
[4]李向辉,王峥嵘,王建森.减振槽型式对转向叶片泵瞬时流量的影响[J].液压与气动,2006,(12):74-76Li X H,Wang Z R,Wang J S.Influence of silencing groove geometry on discharging flow within steering vane pump[J].Chinese Hydraulics&Pneumatics,2006,(12):74-76(in Chinese)
[5]郜立焕,孙俊伟,杨毅,等.配流盘新型减振方案的研究[J].机床与液压,2008,36(9):212-213,259Gao L H,Sun J W,Yang Y,et al.New type shock absorption search of valve plate[J].Machine Tool&Hydraulics,2008,36(9):212-213,259(in Chinese)
[6]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,2008,28(3):20-22Ma J H,Wang Q.Design of port plate of variable vane pump based on the new damping groove[J].Hydraulics Pneumatics&Seals,2008,28(3):20-22(in Chinese)
[7]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,2008,36(6):85-87Ma J H,Xing M F,Liu H.Design of port plate of variable vane pump based on semi-cone damping groove[J].Machine Tool&Hydraulics,2008,36(6):85-87(in Chinese)
[8]Helgestad B O,Foster K,Bannister F K.Pressure transients in an axial piston hydraulic pump[J].Proceedings of the Institution of Mechanical Engineers,1974,188(17):189-199
[9]Yamauchi K,Yamamoto T.Noises generated by hydraulic pumps and their control method[J].Mitsubishi Technical Review,1976,13(1):1-13
[10]Yamaguchi A.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:heat transfer,combustion,power,thermophysical properties[J].Japan Society of Mechanical Engineering International Journal,1987,30(249):87-92
[11]Yamaguchi A.Tribology of hydraulic pumps[J].ASTM Special Technical Publication,1997,1310:49-61
[12]Yamaguchi A,Sekine H,Shimizu S,et al.Bearing/seal characteristics of the film between a valve plate and a cylinder block of axial piston pumps:effects of fluid types and theoretical discussion[J].The Journal of Fluid Control,1990,20(4):7-29
[13]Pettersson M E,Weddfelt K G,Palmberg J O S.Methods of reducing flow ripple from fluid power piston pumps-a theoretical approach[J].SAE Transactions,1991,100(2):158-167
[14]马金河,王芊.双作用径向柱塞泵半圆锥型减振槽的研究[J].液压与气动,2008,(5):71-73Ma J H,Wang Q.Research on semi-cone damping groove of double acting radial piston pumps[J].Chinese Hydraulics&Pneumatics,2008,(5):71-73(in Chinese)
[15]甘海.轴向柱塞泵配流副流场仿真及三角减振槽参数特性分析[D].哈尔滨:哈尔滨工业大学,2014Gan H.Simulation of Flow filed for axial piston pump cylinder block-valve plate interface and parameters characteristic analysis of triangular relief groove[D].Harbin:Harbin Institute of Technology,2014(in Chinese)
[16]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):31-35Zhang Y J,Zhang H X,Zhao Q H,et al.Simulation of pump chamber flow field for rotating-sleeve distributingflow system for reciprocating plunger pump[J].Chinese Hydraulics&Pneumatics,2016,(11):31-35(in Chinese)
[17]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):48-51Zhang H X,Cheng L J,Zhang T Z,et al.Structural principle of rotating-sleeve distributing-flow system for reciprocating plunger pump[J].Fluid Machinery,2015,43(8):48-51(in Chinese)