Simulation and Analysis of a New Type Reciprocating Pump Driven by a Combination of Cam Mechanisms and Fan-shaped Gear-racks

Abstract

Abstract: In view of complex structure of traditional reciprocating pumps, large flow fluctuation and short life of cam drive reciprocating pumps, etc.，a new type reciprocating pump driven by a combination of cam mechanisms and fan-shaped gear-racks was proposed. the reciprocating movements of the reciprocating pump were driven by the alternating work of the cam mechanisms and the fan-shaped gear-rack mechanisms, which realized the piston uniform acceleration-uniform speed-uniform deceleration movement laws. The motion equation of the piston was established, and the influences of the flow characteristics and phase error angles of the reciprocating pump on the flow pulsation was analyzed with the example of the triplex reciprocating pump. And the dynamics simulation model of the triplex reciprocating pump driven by a combination of cam mechanisms and fan-shaped gear-racks was established, and the motion characteristics of the piston under the hydraulic end load was discussed. The results show that the flow pulsation rate of triplex reciprocating pump driven by a combination of cam mechanisms and fan-shaped gear-racks is only 1.68%,which reaches the effectiveness of the crank-slider mechanism reciprocating pump with air-bag action.The phase errors have some influences on the flow pulsation, and they should be controlled within ±30′. The simulation results verify the rationality and feasibility of a new type reciprocating pump driven by a combination of cam mechanisms and fan-shaped gear-racks.

Key words: reciprocating pump, cam mechanism, fan-shaped gear rack, kinematics, flow, dynamics

摘要：

针对传统往复泵结构复杂、流量波动较大、凸轮驱动往复泵寿命短等问题，提出了一种凸轮和齿扇齿条复合驱动的新型往复泵,凸轮机构和齿扇齿条机构的交替工作驱动该往复泵的活塞做往复运动，使活塞呈现匀加速—匀速—匀减速的运动规律。建立了活塞的运动方程，并以三缸往复泵为例分析了往复泵的流量特性和相位误差角对流量脉动的影响，建立了凸轮和齿扇齿条复合驱动的三缸往复泵的动力学仿真模型，讨论了液力端载荷作用下活塞的运动特性。研究结果表明:凸轮和齿扇齿条复合驱动的三缸往复泵的流量脉动率仅为1.68%，已经达到曲柄滑块机构往复泵有空气包作用时的效果；相位误差对流量脉动存在一定影响，其大小应控制在±30′以内。仿真结果验证了所提出的凸轮和齿扇齿条复合驱动的新型往复泵的合理性与可行性。

关键词: 往复泵, 凸轮机构, 齿扇齿条, 运动学, 流量, 动力学

CLC Number:

TH113

HOU Yongjun;WANG Bin . Simulation and Analysis of a New Type Reciprocating Pump Driven by a Combination of Cam Mechanisms and Fan-shaped Gear-racks[J]. China Mechanical Engineering.

侯勇俊;王斌. 凸轮和齿扇齿条复合驱动的新型往复泵仿真及分析[J]. 中国机械工程.

References

[1]陈纪伟.圆柱凸轮柱塞泵动力学研究 [D].成都：西南石油大学,2012.

CHEN Jiwei. Dynamics Research of the Piston Pump with Cylindrical Cam-drive Mechanism [D]. Chengdu: Southwest Petroleum University,2012.

[2]张云霞，张金中.往复泵的发展与展望[J].现代制造技术与装备,2006(5):19-20.

ZHANG Yunxia, ZHANG Jinzhong. Development and Trend of the Reciprocating Pump[J]. Modern Manufacturing Technology and Equipment, 2006(5):19-20.

[3]何畏，周晓敏，郭源君，等.新型六缸滚珠丝杠往复泵相位误差流量波动分析 [J]. 液压与气动,2013(10):73-77.

HE Wei, ZHOU Xiaomin, GUO Yuanjun, et al. Phase Error Flow Fluctuating Analysis on Modern Six-cylinder Ball Screw Reciprocal Pump[J]. Chinese Hydraulics & Pneumatics, 2013(10):73-77.

[4]文宏刚，刘海山，鲁飞，等. 立式三缸双作用往复泵曲轴结构设计及优化[J]. 煤矿机械，2017, 38(4):93-95.

WEN Honggang, LIU Haishan, LU Fei, et al. Structure Design and Optimization Analysis of Vertical Double-acting Triplex Reciprocating Pump Crankshaft[J]. Coal Mine Machinery,2017, 38(4):93-95.

[5]SOL J H . Description and Analysis of New Motion Conversion Mechanism for Heavy-loaded Reciprocating Pumps[J]. Lecture Notes in Engineering & Computer Science, 2014, 2212(1):1338-1343.

[6]WANG Mingdi, SONG Qiang, ZHONG Kangmin. The Double Role Piston Pump Based on the Symmetrical Gears and Crank-link-slider Mechanism Driven by Servo Motor[J]. Applied Mechanics and Materials,2011,121/126:2308-2312.

[7]GANDHI V C S, KUMARAVELAN R, RAMESH S, et al. Design and Analysis of Quad-acting Reciprocating Pump: a Novel Approach[J]. International Journal for Engineering Model, 2014,27(3/4):125-130.

[8]DUCHEMIN M, COLLE V. Profile Optimization of the Teeth of the Double Rack-and-pinion Gear Mechanism in the MCE-5 VCRi Engine[J]. SAE International Journal of Engines, 2016,9(3):1786-1794.

[9]GUAN Xingquan, LU Qiuping, LIU Weidong. Study on the Working Principle of a New Type of Power Transmission Mechanism for Gasoline Engine[J]. Advanced Materials Research,2013,744:223-226.

[10]潘济安，尤政.发动机内啮合齿轮齿条式动力传输机构的设计与研制[J].机械设计与研究,2016, 32(4):74-78.

PAN Ji'an, YOU Zheng. The Design and Development on Internal Gearing Gear-rack Power Transmitting Mechanism of Engine[J]. Machine Design & Research,2016,32(4):74-78.

[11]杨泽，李建永，高兴华，等.基于齿轮齿条传动的新型二冲程发动机的设计[J]. 中国农机化学报,2017, 38(1):85-90.

YANG Ze, LI Jianyong, GAO Xinghua, et al. Design of New Two-stroke Engine Based on Gear-rack Transmission[J]. Journal of Chinese Agricultural Mechanization,2017, 38(1):85-90.

[12]隋庆生. 齿轮齿条传动的柱塞泵: 2012202390982[P].1990-05-30.

SUI Qingsheng. Pinion and Rack Driven Plunger Pump: 2012202390982[P]. 1990-05-30.

[13]陈迎春, 高宬宬, 王新华, 等. 一种齿轮齿条传动的卧式三缸柱塞往复泵: 2016112556116[P].2017-05-31.

CHEN Yingchun, GAO Chenchen, WANG Xinhua, et al. A Horizontal Three-cylinder Plunger Reciprocating Pump Driven by Gear Rack: 2016112556116[P].2017-05-31.

[14]侯勇俊, 王斌, 王钰文, 等.齿扇齿条式往复泵: 2017107802505[P].2017-11-24.

HOU Yongjun, WANG Bin, WANG Yuwen, et al. Tooth Fan Rack Reciprocating Pump: 2017107802505[P].2017-11-24.

[15]侯勇俊，李蓓蓓,张培志,等.单作用直线电机三缸往复泵运动特性研究[J]. 西南石油大学学报(自然科学版) ,2009,31(5):163-166.

HOU Yongjun, LI Beibei, ZHANG Peizhi, et al. The Research on Motion Characteristics of Triplex Single-function Reciprocating Pump Driven by Linear Motors [J]. Journal of Southwest Petroleum University(Science & Technology Edition),2009, 31(5):163-166.
[16]MA Yi, LUO Huashuai, GAO Tao, et al. Transient Flow Study of a Novel Three-cylinder Double-acting Reciprocating Multiphase Pump[J]. Journal of Fluids Engineering, Transactions of the ASME,2017,139(10)：101-110.

[17]沈学海. 钻井往复泵原理与设计[M] .北京: 机械工业出版社， 1990:22.

SHEN Xuehai. Principle and Design of Drilling Reciprocating Pump [M]. Beijing: Mechanical Industry Press, 1990:22.

[18]冯进，魏俊，刘倩倩，等. 七缸往复泵曲柄初相角布置方案及优选[J]. 石油学报,2018, 39(3):357-364.

FENG Jin, WEI Jun, LIU Qianqian, et al. Analysis and Optimization of Initial-phase-angle Arrangement Scheme for the Crank of Seven-cylinder Reciprocating Pump[J]. Acta Petrolei Sinica, 2018,39(3):357-364.

[19]陈燎原，朱增宝. 往复泵装置水力特性的仿真研究[J]. 安徽理工大学学报(自然科学版)，2006，26(4):50-54.

CHEN Liaoyuan, ZHU Zengbao. Studies on the Hydraulic Characteristic Simulation for Reciprocating Pump-unit [J]. Journal of Anhui University of Science and Technology(Natural Science Edition),2006,26(4):50-54.