Numerical simulation of factors affecting flow characteristics of double-circular-arc gear pump

Authors

HUANG Cheng, College of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China
XU Kai, College of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China;Advanced Manufacturing Collaborative Innovation Center of Henan University of Science and Technology, Luoyang, Henan 471003, ChinaFollow
WEI Zhibo, College of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China
LI Geqiang, College of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China;Advanced Manufacturing Collaborative Innovation Center of Henan University of Science and Technology, Luoyang, Henan 471003, China

Corresponding Author(s)

徐恺（1979—），男，河南科技大学副教授，博士。E-mail：x62025@126.com

Abstract

Objective: Analyzed the influencing factors of the internal flow field pulsation characteristics of the new double circular arc gear pump, and adopt reasonable parameters to improve the output efficiency of the gear pump. Methods: The two-dimensional flow field simulation model of the gear pump was established, and the computational fluid dynamics software Fluent was used for simulation analysis to study the influence of different tip clearance, different gear eccentricity, load and speed on the instantaneous flow, flow pulsation and flow field characteristics of the oil outlet of the gear pump. Results: As the tooth tip clearance increased, the outlet flow rate of the gear pump gradually decreased. When the tooth tip clearance was 0.09 mm, the minimum pulsation coefficient of the outlet flow rate was 0.135, which was the optimal tooth tip clearance for the gear pump under this structural parameter. Due to the influence of load pressure and rotational speed, the central axis of the gear pump deviates. As the eccentricity of the central axis of the gear pump rotor increased, the outlet flow rate of the gear pump gradually increased. When the eccentricity was 0.05 mm, the outlet flow rate of the gear pump increased by 5.09% compared to without central deviation, improving the flow output. Conclusion: The main influencing factors on the flow characteristics of gear pumps are rotor speed and tooth tip clearance, and the influence of center deviation is relatively small.

Publication Date

12-26-2023

First Page

87

Last Page

92,111

DOI

10.13652/j.spjx.1003.5788.2022.80996

Recommended Citation

Cheng, HUANG; Kai, XU; Zhibo, WEI; and Geqiang, LI (2023) "Numerical simulation of factors affecting flow characteristics of double-circular-arc gear pump," Food and Machinery: Vol. 39: Iss. 10, Article 13.
DOI: 10.13652/j.spjx.1003.5788.2022.80996
Available at: https://www.ifoodmm.cn/journal/vol39/iss10/13

References

[1] GUPTA R. 齿轮泵在食品工业中的应用[J]. 中国食品工业, 2004（11）: 48-50. GUPTA R. Application of gear pump in food industry[J]. China Food Industry, 2004（11）: 48-50.
[2] 刘津臣. 多用途食品泵[J]. 食品机械, 1988（1）: 9-10. LIU J. Multi-purpose food pump[J]. Food Machinery, 1988（1）: 9-10.
[3] 张静, 毛子强, 杨国来. 外啮合斜齿轮泵内部流场仿真与分析[J]. 液压与气动, 2014（2）: 10-13. ZHANG J, MAO Z Q, YANG G L. Simulation and analysis of internal flow field of external helical gear pump[J]. Hydraulic and Pneumatic, 2014（2）: 10-13.
[4] 赵鹏军, 谷立臣, 焦龙飞, 等. 考虑油液特性的齿轮泵内部流场仿真分析研究[J]. 机床与液压, 2017, 45（19）: 148-152, 169. ZHAO P J, GU L C, JIAO L F, et al. Simulation and analysis of internal flow field of gear pump considering oil characteristics[J]. Machine Tool and Hydraulics, 2017, 45（19）: 148-152, 169.
[5] 魏小玲, 冯永保, 刘珂, 等. 基于EEMD的圆弧齿轮泵空化流动及振动特性试验研究[J]. 振动与冲击, 2022, 41（10）: 90-98. WEI X L, FENG Y B, LIU K, et al. Experimental study on cavitation flow and vibration characteristics of circular gear pump based on EEMD[J]. Vibration and Shock, 2022, 41（10）: 90-98.
[6] 刘茜. 外啮合齿轮泵的瞬时流量及脉动特性研究[J]. 机械传动, 2013, 37（6）: 17-21. LIU Q. Research on instantaneous flow and pulsation characteristics of external gear pump[J]. Mechanical Transmission, 2013, 37（6）: 17-21.
[7] 王文, 尹艳美, 贺尚红, 等. 齿轮式机油泵齿形对流量特性的影响分析[J]. 食品与机械, 2016, 32（12）: 92-95. WANG W, YIN Y M, HE S H, et al. Analysis of influence of gear oil pump tooth shape on flow characteristics[J]. Food & Machinery, 2016, 32（12）: 92-95.
[8] 周二杰, 梁培生, 张国政. 基于Fluent的农用齿轮泵不同转速下的流场分析[J]. 中国农机化学报, 2017, 38（3）: 27-30. ZHOU E J, LIANG P S, ZHANG G Z. Flow field analysis of agricultural gear pump at different speeds based on fluent[J]. China Journal of Agricultural Machinery Chemistry, 2017, 38（3）: 27-30.
[9] 李玲辉, 陈奎生, 湛从昌. 考虑空化的外啮合齿轮泵流量特性仿真分析[J]. 武汉科技大学学报, 2021, 44（4）: 262-269. LI L H, CHEN K S, ZHAN C C. Simulation analysis of flow characteristics of external gear pump considering cavitation[J]. Journal of Wuhan University of Science and Technology, 2021, 44（4）: 262-269.
[10] 杨国来, 王文宇, 黄付田, 等. 不同吸油口尺寸及转速下齿轮泵空化特性[J]. 液压与气动, 2020（1）: 74-79. YANG G L, WANG W Y, HUANG F T, et al. Cavitation characteristics of gear pump under different oil suction size and speed[J]. Hydraulic and Pneumatic, 2020（1）: 74-79.
[11] SZWEMIN P, FIEBIG W. The influence of radial and axial gaps on volumetric efficiency of external gear pumps[J]. Energies, 2021, 15（14）: 4 468-4 489.
[12] ZHOU Y, HAO S, HAO M. A two-dimensional numerical analysis of a circular-arc gear pump operating at high pressures and high speeds[J]. Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering, 2015, 231（3）: 432-443.
[13] 李阁强, 张龙飞, 韩伟锋, 等. 双圆弧斜齿齿轮泵脉动特性分析及齿形设计[J]. 中国机械工程, 2018, 29（2）: 186-192. LI G Q, ZHANG L F, HAN W F, et al. Pulsation characteristic analysis and tooth profile design of double-circular-arc helical gear pump[J]. China Mechanical Engineering, 2018, 29（2）: 186-192.
[14] 魏列江, 王鑫, 张静, 等. 外啮合齿轮泵内部流场的仿真与分析[J]. 机床与液压, 2013, 41（23）: 134-137. WEI L J, WANG X, ZHANG J, et al. Simulation and analysis of internal flow field of external gear pump[J]. Machine Tool and Hydraulic, 2013, 41（23）: 134-137.
[15] 商嘉玮, 黄志刚, 张一明, 等. 四螺杆挤出机螺杆排列方式对聚乳酸流场特性的影响[J]. 食品与机械, 2023, 39（3）: 72-77. SHANG J W, HUANG Z G, ZHANG Y M, et al. The effect of screw arrangement on the flow field characteristics of polylactic acid in a four screw extruder[J]. Food & Machinery, 2023, 39（3）: 72-77.
[16] CHEN C K, YANG S C. Geometric modelling for cylindrical and helical gear pumps with circular arc teeth[J]. ARCHIVE Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, 2000, 214（4）: 599-607.
[17] 孔繁余, 何玉洋, 郑德, 等. 外啮合齿轮泵流量特性影响因素分析[J]. 排灌机械工程学报, 2014（2）: 108-112. KONG F Y, HE Y Y, ZHANG D, et al. Analysis of factors affecting flow characteristics of external gear pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014（2）: 108-112.
[18] 李行, 董庆伟, 李阁强, 等. 高速高压圆弧螺旋齿轮泵径向力补偿方法研究[J]. 现代制造工程, 2022（5）: 72-78. LI H, DONG Q W, LI G Q, et al. Research on radial force compensation method of high-speed and high-pressure arc helical gear pump[J]. Modern Manufacturing Engineering, 2022（5）: 72-78.
[19] 刘坤, 徐雷, 杨波, 等. 啮合斜齿轮高压泵的CFD数值模拟[J]. 排灌机械工程学报, 2019, 37（4）: 307-312. LIU K, XU L, YANG B, et al. CFD numerical simulation of meshing helical gear high-pressure pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2019, 37（4）: 307-312.