Founded in 1971 >
Chinese Sci-tech Core Periodicals >
British Science Abstracts (SA, INSPEC) Indexed Journals >
United States, Cambridge Scientific Abstract: Technology (CSA: T) Indexed Journals >
United States, Ulrich's Periodicals Directory(UPD)Indexed Journals >
United States, Cambridge Scientific Abstract: Natural Science (CSA: NS) Indexed Journals >
Poland ,Index of Copernicus(IC) Indexed Journals >
International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
Add:
No.9 Gaoguannong,Daxue Road,Hangzhou,China
P.C:
310009
E-mail:
meem_contribute@163.com
Abstract: Aiming at the leakage and trapped oil problems that mainly affected the performance of high-speed gear pump, in order to reduce the leakage and trapped oil pressure of high-speed gear pump, a leakage calculation and unloading groove design method combining theory, simulation and experiment was proposed. Firstly, the hydraulic model of high-speed gear pump for aviation considering clearance and leakage was established, and the calculation formulas of tip leakage, lateral leakage and meshing leakage were derived. Secondly, the design formulas of the unloading groove were given, the distance between the two unloading grooves was optimized, the length, depth and position of the unloading groove were determined, and an improved shape unloading groove was proposed. Then, the Pumplinx software was used, and the instantaneous distribution results of the internal fluid domain of the gear pump were obtained. The fluid domains with unloading groove were compared with the fluid domain without unloading groove, so that the phenomenon of trapped oil was observed intuitively. The maximum trapped oil pressure generated by the fluid domain corresponding to the four unloading grooves was compared in details. Finally, the experiments were conducted on a specific high-speed gear pumps for aviation. The experimental results show that the flow rate of the experiments is consistent with the flow rate of the established simulation model, with an average error of less than 10%, it verifies that the calculation formula and leakage analysis are correct. The research is of great significance to the design optimization and production guidance of the gear pump in the factory.
Key words: external gear pump; leakage model; flow field simulation; unloading groove; structural optimization; oil-trapped phenomenon
-
- Chinese Core Periodicals
-
- Chinese Sci-tech Core Periodicals
-
- SA, INSPEC Indexed
-
- CSA: T Indexed
-
- UPD:Indexed
-
2010 Zhejiang Information Institute of Mechinery Industry
Technical Support：Hangzhou Bory science and technology
