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External gear pumps make some of the most frequently used hydraulic energy generators. In spite of the fact that those well known machines feature good operational parameters, the research and development work on the pumps is still going on. There is a number of various research methods applied. One of them, an experimental method, is a visualization study, on which this paper is focused. In this article, the visualization research method has been presented, which has been used for the study of the flow processes and phenomena in the external gear pump. Findings of the research enabled a detailed description of the flow process, namely of the transporting of the working fluid through the pump, in each of the typical zones of the pump. It turns out that a characteristic feature of the process is the occurrence of various cavitation phenomena. All characteristic cavitation forms, as well as the degrees of their intensity, observed during the research, have been catalogued and specifically described. The research also made it possible to identify the critical areas of the pump, which, consequently, allowed the development of specific design, construction and operational recommendations. A result of applying those recommendations was a considerable reduction of the intensity of the cavitation phenomena, evidence of which is the experimental study presented in this paper.
Czasopismo
Rocznik
Tom
Strony
1103--1115
Opis fizyczny
Bibliogr. 19 poz., fot., rys., tab.
Twórcy
autor
- Wrocław University of Science and Technology, Faculty of Mechanical Engineering, Wrocław, Poland
autor
- Wrocław University of Science and Technology, Faculty of Mechanical Engineering, Wrocław, Poland
Bibliografia
- [1] L. Rodionov, P. Rekadze, J. Stryczek, A gear micropump without bearings production, Appl. Mech. Mater. 775 (2015) 352–356. https://www.scientific.net/AMM.775.352.
- [2] W. Kollek, P. Osiński, U. Warzyńska, The influence of gear micropump body asymmetry on stress distribution, Pol. Marit. Res. (93) 24 (1) (2017) 60–65. https://www.degruyter. com/downloadpdf/j/pomr.2017.24.issue-1/pomr-2017-0007/ pomr-2017-0007.pdf.
- [3] K. Biernacki, J. Stryczek, Analysis of stress and deformation in plastic gears used in gerotor pumps, J. Strain Anal. Eng. Des. 45 (October (7)) (2010) 465–479. , http://dx.doi.org/10.1243/ 03093247JSA630.
- [4] K. Biernacki, Selection of the optimum tooth profile for plastic cycloidal gears, Proc. Inst. Mech. Eng. Part C: J. Mech. Eng. Sci. 228 (April (18)) (2014) 3395–3404. , http://dx.doi.org/10.1177/ 0954406214531408.
- [5] K. Biernacki, Analysis of the influence of the material and design modifications on strength of the cycloidal gear system, Int. J. Precis. Eng. Manuf. 16 (March (3)) (2015) 537– 546. , http://dx.doi.org/10.1007/s12541-015-0073-6.
- [6] J. Krawczyk, J. Stryczek, Designing of the gerotor pump body made of plastics, in: Proceedings of the ASME 2016 9th FPNI Ph.D. Symposium on Fluid Power FPNI2016, October 26–28, Florianópolis, SC, Brazil, 2016, http://dx.doi.org/10.1115/ FPNI2016-1504.
- [7] J. Stryczek, S. Bednarczyk, K. Biernacki, Strength analysis of the polyoxymethylene cycloidal gears of the gerotor pump, Arch. Civil Mech. Eng. 14 (August (4)) (2014) 647–660. , http:// dx.doi.org/10.1016/j.acme.2013.12.005.
- [8] J. Zhou, A. Vacca, P. Casoli, A novel approach for predicting the operation of external gear pumps under cavitating conditions, Simul. Model. Pract. Theory June (45) (2014) 35– 49. , http://dx.doi.org/10.1016/j.simpat.2014.03.009.
- [9] P. Antoniak, J. Stryczek, Modeling the flow phenomena in gerotor pumps, in: 3rd FPNI – PhD Symposium on Fluid Power, Terrassa, Spain, 2004.
- [10] P. Antoniak, J. Stryczek, Designing the channels and the inner clearances in gerotor pumps, in: 4th FPNI – PhD Symposium on Fluid Power, Sarasota, USA, 2006.
- [11] P. Antoniak, J. Stryczek, 'Cycloidal gear machines' optimal designing of inner channels in gerotor pumps, in: 5th FPNI – PhD Symposium, Kraków, Poland, 2008.
- [12] R. Castilla, P.J. Gamez-Montero, N. Ertürk, A. Vernet, M. Coussirat, E. Codina, Numerical simulation of turbulent flow in the suction chamber of a gearpump using deforming mesh and mesh replacement, Int. J. Mech. Sci. 52 (2010) 1334–1342. , http://dx.doi.org/10.1016/j. ijmecsci.2010.06.009).
- [13] R. Maiti, M.K. Das, V. Sahoo, C. Avula, A. Anukaran, V.P. Tolambia, A. Nag, Leakage past active contacts in involute and cycloidal gear hydrostatic units, in: The Fourteenth Scandinavian International Conference on Fluid Power, May 20–22, Tampere, Finland, 2015.
- [14] P. Jędraszczyk, W. Fiebig, CFD model of an external gear pump, in: E. Rusiński, D. Pietrusiak (Eds.), Proceedings of the 13th International Scientific Conference, RESRB 2016, Lecture Notes in Mechanical Engineering, (2017) 221–231. , http://dx. doi.org/10.1007/978-3-319-50938-9_23.
- [15] N. Ertürk, A. Vernet, J.A. Ferré, R. Castilla, E. Codina, Analysis of the turbulent flow of an external gear pump by time resolved particle image velocimetry, in: 14th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 07–10 July, 2008.
- [16] P. Antoniak, Experimental studies of flows inside gerotor pumps with use of high-speed digital camera, in: 6th FPNI-PhD Symposium, West Lafayette, Indiana, USA, June 15–19, vol. 2, (2010) 691–698.
- [17] J. Stryczek, P. Antoniak, O. Jakhno, D. Kostyuk, A. Kryuchkov, G. Belov, L. Rodionov, Visualisation research of the flow processes in the outlet chamber–outlet bridge–inlet chamber zone of the gear pumps, Arch. Civil Mech. Eng. 15 (January (1)) (2015) 95–108. , http://dx.doi.org/10.1016/j.acme.2014.02.010.
- [18] G. Kolks, J. Weber, Controller design for precise and efficient industrial cylinder drives using independent metering valves, in: ASME, Fluid Power Systems Technology, 9th FPNI Ph.D. Symposium on Fluid Power, 2016, http://dx.doi.org/10.1115/ FPNI2016-1514, V001T01A009.
- [19] M. Banaś, The multifunctional hydraulic machine with the electronic control system, in: 6th FPNI-PhD Symposium, West Lafayette, Indiana, USA, June 15–19, vol. 2, (2010) 615–620.
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-676b9f46-a44a-4fd8-b50c-05c3764e1c67