大侧隙外啮合齿轮泵的困油特性和流量特性

李玉龙; 刘春艳; 王生

doi:10.13433/j.cnki.1003-8728.2015.0326

大侧隙外啮合齿轮泵的困油特性和流量特性

doi: 10.13433/j.cnki.1003-8728.2015.0326

1.
成都大学工业制造学院, 成都 610106;
2.
西南油气田分公司安全环保与技术监督研究院, 成都 610041;
3.
中石油第二建设公司, 兰州 730060

基金项目:

成都大学人才引进项目（20804）资助

详细信息

作者简介:
李玉龙（1968-），教授，博士，研究方向为齿轮泵理论及现代设计方法，leo-world@163.com

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出版历程
- 收稿日期: 2013-07-15
- 刊出日期: 2015-03-05

The Trapped Oil Characteristics and Flow Characteristics with Large Backlash Gap in External Gear Pumps

1.
Industrial Manufacturing College, Chengdu University, Chengdu 610106;
2.
Environmental Protection and Safety Technology Supervision Institute, Southwest Oil and Gas Field Branch, Chengdu 610041;
3.
The Second Construction Company of CNPC, Lanzhou 730060

摘要

摘要: 以对称双矩形卸荷槽为例，基于泵排油区域封闭容积变化的精确计算和困油压力的仿真结果，给出了理想状态和实际状态下瞬时流量的计算公式，并就流量品质进行分析。结果表明：理想状态下，卸荷槽能有效改善泵的流量品质，平均流量提高了1.6%；流量不均匀系数降低了65.3%；实际状态下，卸荷槽同样能有效改善泵的流量品质，不过改善效果将有所下降；大侧隙时两困油区互为一体仅为一种粗略的近似；单齿啮合区间也会发生明显的困油现象等。得出困油现象仅限于双齿啮合的传统定义应予以修正，以及在流量计算中考虑困油压力很有必要的结论。
- 齿轮泵 /
- 流量 /
- 困油 /
- 卸荷槽
Abstract: With double symmetrical rectangle relief grooves as an example, from the accurate calculation of closed volume changed in discharge side of gear pump and the simulation results of trapped oil pressure, the calculation formula of instantaneous flow rates were derived under ideal state and actual state, and then the flow quality was analyzed. Results indicated that, in the ideal state, the flow quality was greatly improved by relief groove, the average flow rate was increased by 1.6%, and the non-uniform flow coefficient was reduced by 65.3%; in the actual state, the flow quality was also improved by relief groove, but the improvement effect was slightly declined; the two trapped oil regions as a whole in large backlash gap only was a rough approximation, and the obvious phenomenon of trapped oil was also occurred in the meshing range of a single tooth, etc. It is summarized that the classic definition of trapped oil phenomenon limited in the meshing range of two teeth should be corrected, and it is necessary to consider the trapped oil pressure in the calculation of instantaneous flow rate.
- angular velocity /
- calculations /
- computer simulation /
- flow rate

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参考文献(12)

[1]	何存兴.液压元件[M].北京:机械工业出版社,1982 He C X. Hydraulic components[M]. Beijing:Mechanical Industry Press,1982 (in Chinese)
[2]	Saleem A M, Lecturer A. Effect of tooth geometry on gear pumps performance[J].Tikrit Journal of Eng. Sciences,2009,16(14) :20-27
[3]	Nagamura K, Ikejo K, Tutulan F G. Design and performance of gear pumps with a non-involutes tooth profile[J].Proceedings of the Institution of Mechanical Engineers Part B: Journal of Engineering Manufacture,2004,218(7) :699-710
[4]	Huang K J, Lian W C. Kinematic flowrate characteristics of external spur gear pumps using an exact closed solution[J].Mechanism and Machine Theory,2009,44(6) :1121–1131
[5]	李玉龙,孙付春.齿轮泵齿侧间隙与卸荷槽间距关系的定量分析[J].农业工程学报,2012,28(22):63-68 Li Y L, Sun F C. Quantitative analysis of relationship between backlash value and distance of two relief grooves in external gear pump[J].Transactions of the CSAE,2012,28(22):63-68(in Chinese)
[6]	李玉龙.外啮合齿轮泵困油机理、模型及试验研究[D].合肥:合肥工业大学,2009 Li Y L. Mechanism, modeling and experiment Investigation of trapped oil in external gear pump[D].Hefei:Hefei University of Technology,2009 (in Chinese)
[7]	李玉龙.基于低速困油模型的外啮合齿轮泵高速困油特性分析[J].农业工程学报,2012,28(9):35-39 Li Y L. Characteristics analysis of high-speed trapped-oil in external gear pump based on low-speed trapped-oil model[J].Transactions of the CSAE,2012,28(9):35-39 (in Chinese)
[8]	李玉龙,刘焜.外啮合齿轮泵动态困油模型及其参数影响分析[J].农业机械学报,2009,40(9):214-219 Li Y L, Liu K. Model of trapped oil and effect of related variables on trapped oil pressure in external spur-gear pump[J].Transactions of the CSAM,2009,40(9):214-219 (in Chinese)
[9]	李玉龙.齿轮泵最大困油压力解析式的建立与验证[J].农业工程学报,2013,29(11):71-77 Li Y L. Establishment and verification of analytic formula for maximum trapped-oil pressure in external gear pump[J].Transactions of the CSAE,2013,29(11):71-77 (in Chinese)
[10]	李玉龙,刘焜.外啮合齿轮泵困油面积和卸荷面积计算式的建立[J].农业机械学报,2009,40(6):203-207 Li Y L, Liu K. Formulas for trapped-oil area and relief-load area of external spur-gear pump [J].Transactions of the CSAM,2009,40(6):203-207 (in Chinese)
[11]	李玉龙,孙付春.齿轮泵困油的分析模型及侧隙计算[J].排灌机械工程学报,2011,29(2):118-122 Li Y L,Sun F C.Analysis model on trapped oil and backlash calculation in external gear pump [J].Journal of Drainage and Irrigation Machinery Engineering,2011,29(2):118-122 (in Chinese)
[12]	Yanada H, Ichikawa T, Itsuji Y. 齿轮泵困油现象研究[J].液压与气动,1988,(3),47-52 Yanada H, Ichikawa T, Itsuji Y. The phenomenon of trapped oil in gear pump[J].Chinese Hydraulics & Pneumatics,1988,(3),47-52 (in Chinese)