Visualisation research of the flow processes in the outlet chamber–outlet bridge–inlet chamber zone of the gear pumps

Stryczek, J.; Antoniak, Piotr; Jakhno, O.; Kostyuk, D.; Kryuchkov, A. N.; Белов, Глеб Олегович; Rodionov, Leonid

doi:10.1016/j.acme.2014.02.010

Cited by 44 publications

(32 citation statements)

References 3 publications

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“…The test stand enables conducting research on the influence of the degassing system on the flow phenomena and processes in a hydraulic gear pump. A similar system had been used repeatedly for visualization research by a team of researchers from Wrocław University of Science and Technology [5][6][7][8][9][10], and it proved to be sufficient. Fig.…”

Section: Test Standmentioning

confidence: 99%

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Visualization research on the influence of an ultrasonic degassing system on the operation of a hydraulic gear pump

et al. 2018

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Gear pumps make a group of the most popular hydraulic energy generators. Research and development works concerning those units have been going on for decades, and thanks to them gear pumps feature very good operating parameters. However, even well-designed gear pumps will not work properly if the physical properties of the working fluid are incorrect. One of such properties is compressibility of the fluid, which largely depends on the amount of gas dissolved in the medium. For this reason, the aim is to reduce the amount of gas dissolved in the working medium. It can be done using both chemical and physical methods. Because chemical methods can affect the chemical composition of the working fluid, it is the physical methods that are usually used in hydraulic systems. This paper presents preliminary visualization research into the influence of an ultrasonic degassing system on the operation of a hydraulic gear pump. Apart from that, operation of such a system and its theoretical impact on the work of the gear pump is discussed Experimental study, using a high-speed camera, was carried out in order to verify the theoretical description.

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Section: Test Standmentioning

confidence: 99%

“…The pump body consists of three parts: the front (1), the middle (2) and the back (3). The body parts are positioned by pins (8) and bolted (7). In the body, there is a set of two gears featuring shafts: the active gear (4) and the passive gear (5).…”

Section: Experimental Pumpmentioning

confidence: 99%

Visualization research on the influence of an ultrasonic degassing system on the operation of a hydraulic gear pump

et al. 2018

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“…One of the hydrodynamic noise reasons is the cavitation. Stryczek [15] provides measure to decrease noise caused by this phenomena. Another reason is the pressure ripples.…”

Section: Introductionmentioning

confidence: 99%

Exploration of Acoustic Characteristics of Gear Pumps with Polymeric Pinion Shafts

Rodionov

Pomatilov

Rekadze

2015

Procedia Engineering

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The previous researches show that it is possible to replace several parts of gear pumps to polymeric ones. This substitution leads to cost and noise reduction of the pump unit. Therefore, the series of experiments on test bench SVNSH-08 with the use of acoustic camera Norsonic Nor848 for the analysis of acoustic characteristics was carry-out. Measuring system -portable 12-channel signals analyzer LMS SCADAS Mobile (SCM05) was used. Conducted experiment shows that acoustic characteristics of the pump unit depend on different material drive and driven rotor. Experimental result indicates that the proposed measures for replacing metal pinion shafts to polymeric reduce pump unit noise on the test modes.

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“…Castilla et al [15,16] validated CFD numerical results in the aspiration chamber of a customized external gear pump with TRPIV experimental data. More recently, Stryczek et al [17] visualize the cavitation phenomena in the trapped volume of the inlet chamber of the external gear pump for different values of the operational parameters. Moreover, Stryczek et al pictured the influence of oil temperature on the cavitation intensity into the trapped volume of the gear pump.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the impulsion port of a trochoidal wheeled pump

Raush

Gamez-Montero

Castilla

et al. 2017

Flow Measurement and Instrumentation

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© 2017. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/All positive displacement pumps produce a pulsating flow. The present paper reports the experimental measurement of steady flow pulsations in the outlet of the internal wheeled pump. In the measured flow, the manufacturing tolerance are responsible of part of the spectra of the whole pulsation. Time-Resolved Particle Image Velocimetry technique has been used for this purpose. The flow pulsation measurement from a direct visualization of the velocity profile was carried out. The flow rate signal is derived from ad-hoc integration algorithm of the radial velocity profile, where the area discretization is a constant parameter that is relevant to minimize PIV errors by velocity gradients regions near the wall. Spectrographic analysis on the experimental data reveled low frequency components related with manufacturing tolerances. Measurements of this non-invasive procedure are compared with detailed CFD numerical results obtained from an improved gerotor model where manufacturing tolerances have been included. To be compared, cross-power spectral density analysis has been applied. The results reported in the paper show a method to provide a fast non-invasive flow pulsation measurement not only for pumps but also could be extended to compare aging effects of other kind of fluid power devices.Peer ReviewedPostprint (author's final draft

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Visualisation research of the flow processes in the outlet chamber–outlet bridge–inlet chamber zone of the gear pumps

Cited by 44 publications

References 3 publications

Visualization research on the influence of an ultrasonic degassing system on the operation of a hydraulic gear pump

Visualization research on the influence of an ultrasonic degassing system on the operation of a hydraulic gear pump

Exploration of Acoustic Characteristics of Gear Pumps with Polymeric Pinion Shafts

Experimental study on the impulsion port of a trochoidal wheeled pump

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