Method for leakage measurement in the recirculation path of a hermetic pump

Chaburko, P.; Кузнецов, А. В.

doi:10.1088/1757-899x/779/1/012039

IOP Conf. Ser.: Mater. Sci. Eng.

2020

DOI: 10.1088/1757-899x/779/1/012039

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Method for leakage measurement in the recirculation path of a hermetic pump

P. Chaburko

А. В. Кузнецов

Abstract: The article is devoted to the measurement of leakage in the recirculation path of a hermetic pump. The field of application of hermetic pumps is described. The mathematical model used in computer simulation and the mesh conditions are given. The results of the numerical modeling and the theoretical calculation are presented. The graph of the dependence of the leakage in the recirculation path on the pump head is shown. The scalar scenes of velocities and pressures in the c path are given.

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Investigation of cavitation properties of a mobile pumping unit

Konshin,

Konkeyev,

Protopopov

et al. 2023

Izvestiya MGTU MAMI

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BACKGROUND: In the introduction to the article, a review of publications on cavitation, vibration and noise in centrifugal pumps, including the issues of cavitation erosion of impellers, is carried out. AIMS: Comparison of cavitation properties of a centrifugal pump of a mobile pumping unit with and without a pre-engineered screw by computational fluid dynamic (CFD) modeling. METHODS: The calculation of the flow part of a pre-injected impeller stage is described and the CFD model of its hydrodynamic simulation is described. In the CFD model, Navier-Stokes equations averaged over the Reynolds number and the working fluid continuity equation were used. A two-phase fluid model was used to simulate cavitation. RESULTS: The final results of the calculations carried out in the above models are presented. Calculations were obtained for a pump with impeller with and without an upstream stage (screw). For the impeller without a screw, the cavitation margin of 4.7 m was obtained, which is critical for such a pump. For a pump with an impeller with an upstream auger the cavitation margin is 1,7 m, that is much better and allows to show efficiency of such solution. CONCLUSIONS: The requirement of hydrodynamic modeling for selection of optimal flow part of centrifugal pump to improve its cavitation characteristics is formulated.

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Investigation of cavitation properties of a mobile pumping unit

Konshin,

Konkeyev,

Protopopov

et al. 2023

Izvestiya MGTU MAMI

View full text Add to dashboard Cite

show abstract

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Method for leakage measurement in the recirculation path of a hermetic pump

Cited by 1 publication

References 17 publications

Investigation of cavitation properties of a mobile pumping unit

Investigation of cavitation properties of a mobile pumping unit

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