Temperature rise of journal bearing of the high-speed circular arc gear pump

Abstract

A “circular arc–involute–circular arc” circular arc gear pump was developed based on a gear meshing principle and coordinate transformation as well as an accurate calculation model of the radial force. The dependence of the radial force on the meshing angle was investigated. The temperature rise of journal bearings in the pump was evaluated for bearings with and without herringbone grooves. Furthermore, the influence of the rotational speed and outlet pressure on this rise was assessed. The results revealed using herringbone groove on the inner wall of bearing was effective in reducing the temperature increase. Therefore, the use of grooves represents a suitable method of reducing the temperature rise in the journal bearings of a high-speed gear pump.

Keywords

Circular arc high speeds gear pump temperature rise herringbone groove

Get full access to this article

View all access options for this article.

References

Eaton

Keogh

Edge

. The modelling, prediction, and experimental evaluation of gear pump meshing pressures with particular reference to aero-engine fuel pumps. Proc IMechE, Part I: J Systems and Control Engineering 2006; 20: 365–379.

Tumuluri

Murugeshan

Mishra

, et al. Application of direct metal deposition process for failure prevention of oil pump gear shaft in an aero engine. J Fail Anal Prev 2017; 17: 1–8.

Zhou

Hao

. Design and performance analysis of a circular-arc gear pump operating at high pressure and high speed. Proc IMechE, Part C: J Mechanical Engineering Science 2016; 230: 189–205.

Kollek

Osiński

Stosiak

, et al. Problems relating to high-pressure gear micropumps. Arch Civ Mech Eng 2014; 14: 88–95.

Eaton

Keogh

Edge

. The modelling, prediction, and experimental evaluation of gear pump meshing pressures with particular reference to aero-engine fuel pumps. Proc IMechE, Part I: J Systems & Control Engineering 2006; 220: 365–379.

Kollek

Radziwanowska

. Energetic efficiency of gear micropumps. Arch Civ Mech Eng 2015; 15: 109–115.

Sun

Tang

. Design and analysis of the relief groove with involutes shape in the higher speed external gear pumps. Mech Sci Technol Aerosp Eng 2014; 33: 1377–1381.

Kamal

El-Bediwi

Lashin

, et al. Copper effects in mechanical properties of rapidly solidified Sn-Pb-Sb Babbitt bearing alloys. Mater Sci Eng A 2011; 530: 327–332.

Imai

Kosaka

Kojima

, et al. Characteristics and machinability of lead-free P/M Cu60-Zn40 brass alloys dispersed with graphite. Powder Technol 2010; 198: 417–421.

10.

Riabkina-Fishman

Rabkin

Levin

, et al. Laser produced functionally graded tungsten carbide coatings on M2 high-speed tool steel. Mater Sci Eng A 2001; 302: 106–114.

11.

Zhou

Hao

. A two-dimensional numerical analysis of a circular-arc gear pump operating at high pressures and high speeds. Proc IMechE, Part E: J Process Mechanical Engineering 2015; 231: 432–443.

12.

Zhou

Hao

. The study of leakage of circular arc–involute–circular arc gear pump. Adv Mech Eng 2017; 9: 1–9.

13.

Zhou

Che

Yuan

. The design and analysis of a high-speed circular arc gear pump journal bearing. Adv Mech Eng 2018; 10: 1–11.

14.

Ping

. Lubrication numerical calculation methods, 2nd ed. Beijing: High Education Press, 2011.