Simulation and Experimental Analysis of Flow Distribution Performance of the Micro Piston Pump

doi:10.3901/JME.2025.22.370

Abstract

Abstract: It is an innovative idea to realize the decentralized and independent control of oil reservoir exploitation and finally realize the intelligent control of oil field exploitation by using the micro hydraulic system to drive oil field cementing slip sleeve separately in sections. The existing micro hydraulic pump is difficult to meet the requirements due to the extremely narrow layout space. A single piston micro pump with valve distribution structure（hereinafter referred to as micro pump） is proposed, whose maximum outer diameter is only 16 mm. The miniaturization design of piston pump can not rely on the reduction design of the existing conventional pump. Therefore, the structure coefficient ratio is proposed as a new characterizing parameter. The lumped parameter simulation model of micro pump flow characteristics is established to study the sensitivity of micro pump flow distribution performance to different influencing parameters. The performance test platform of the micro pump was built to study the pressure and flow characteristics of the micro pump under different suction conditions. The results show that when the initial closed volume decreases from 0.12 mL to 0.04 mL（corresponding to the structural coefficient ratio changes from 6C to 2C）, the volume efficiency of the micro pump increases from 83.5% to 92.97%. At the same time, increasing the inlet pressure of the pump can effectively enhance the suction capacity of the micro pump, thereby improving the distribution efficiency of the micro pump.

Key words: micro piston pump, flow distribution performance, volumetric efficiency, pressure and flow characteristics

CLC Number:

TH137

BA Jinlei, JIANG Zhiwen, WU Defa, CUI Yan, LIU Yinshui. Simulation and Experimental Analysis of Flow Distribution Performance of the Micro Piston Pump[J]. Journal of Mechanical Engineering, 2025, 61(22): 370-382.

References

[1] 杨曙东,李壮云.海水液压传动技术及其在海洋开发中的应用[J].海洋工程,2000,18(1):81-85.YANG Shudong,LI Zhuangyun. Seawater hydraulic drive and its application in ocean exploitation[J]. The Ocean Engineering,2000,18(1):81-85.
[2] KHAN H, KITANO S, FRIGERIO M, et al.Development of the lightweight hydraulic quadruped robot-mini HyQ[C]//IEEE International Conference on Technologies for Practical Robot Applications. IEEE,2015:1-6.
[3] ZHANG J,YANG M,BING X,et al. A novel intelligent sliding sleeve for shale oil and gas mining equipment[J].Journal of Petroleum Ence and Engineering,2017,158:1-10.
[4] 欧阳小平,王天照,方旭.高速航空柱塞泵研究现状[J].液压与气动,2018(2):1-8.OUYANG Xiaoping, WANG Tianzhao, FANG Xu.Research status of the high speed aircraft piston pump[J].Chinese Hydraulics and Pneumatics,2018(2):1-8.
[5] KNUTSON A L,VAN D V,JAMES D. Modelling and experimental validation of the displacement of a check valve in a hydraulic piston pump[J]. International Journal of Fluid Power,2016,17(2):114-124.
[6] THORAT S,AMARSINGH B. Study of performance analysis of reciprocating pumps using CFD[J].International Journal on Theoretical and Applied Research in Mechanical Engineering,2015,4(1):40-46.
[7] 朱碧海,钱鹏程,姬增起.双斜盘阀配流轴向柱塞式液压电机泵配流特性和变量原理的研究[J].机械工程学报,2018,54(20):220-234.ZHU Bihai,QIAN Pengcheng,JI Zengqi. Research on the flow distribution characteristics and variable principle of the double-swashplate hydraulic axial piston electric motor pump with port valves[J]. Journal of Mechanical Engineering,2018,54(20):220-234.
[8] BERGADA J M,WATTON J,KUMAR S. Pressure,flow,force,and torque between the barrel and port plate in an axial piston pump[J]. Journal of Dynamic Systems Measurement&Control,2008,130(1):1-16.
[9] BERGADA J M,DAVIES D L,KUMAR S,et al. The effect of oil pressure and temperature on barrel film thickness and barrel dynamics of an axial piston pump[J].Meccanica,2012,47(3):639-654.
[10] BÜGENER N,KLECKER J,WEBER J. Analysis and improvement of the suction performance of axial piston pumps in swash plate design[J]. International Journal of Fluid Power,2014,15(3):153-167.
[11] 牛壮,刘银水,王陆一,等.微小型容积式泵研究及应用进展[C]//第九届全国流体传动与控制学术会议论文集,2016:7.NIU Zhuang,LIU Yinshui,WANG Luyi,et al. Research and application progress of miniature displacement pump[C]//The 9th National Conference on Fluid Power Transmission and Control,2016:7.
[12] ZHAI J,ZHOU H. Model and simulation on flow and pressure characteristics of axial piston pump for seawater desalination[J]. Applied Mechanics&Materials,2012,157:1549-1552.
[13] ALESSANDRO CORVAGLIA M R. Comparison of 0D and 3D hydraulic models for axial piston pump[J]. Energy Procedia,2018,148:114-121.
[14] FROSINA E, MARINARO G, SENATORE A.Experimental and numerical analysis of an axial piston pump:A comparison between lumped parameter and 3D CFD approaches[C]//AJKFluids; ASME-JSME-KSME Joint Fluids Engineering Conference,2019.
[15] 余祖耀,张铁华,李壮云.柱塞泵中柱塞与缸孔环形缝隙的泄漏流量计算[J].机械工程师,2000(8):32-33.YU Zuyao,ZHANG Tiehua,LI Zhuangyun. Calculation of leakage flow rate in piston pump with annular gap between piston and cylinder bore[J]. Mechanical Engineer,2000(8):32-33.
[16] CIMBALA J M, CENGEL Y A. Essentials of fluid mechanics:Fundamentals and applications[M]. New York:McGraw-Hill Education Private Limited,2013.
[17] 师汉民,黄其柏.机械振动系统分析、建模、测试、对策(上)[M]. 3版.武汉:华中科技大学出版社,2019.SHI Hanmin, HUANG Qibai. Mechanical vibration systems analysis,modeling,testing,and countermeasures[M]. 3rd ed. Wuhan:Huazhong University of Science and Technology Press,2019.
[18] 潮群. EHA轴向柱塞泵高速化若干关键技术研究[D].杭州:浙江大学,2019.CHAO Qun. Research on some key technoloeies of high-speed rotation for axial piston pumps used in EHAs[D]. Hangzhou:Zhejiang University,2019.