Assessment of acoustic and pulsation characteristics of centrifugal pumps

Zharkovskiy, A.A.; Borshev, Igor; Ivanov, Evgeniy; Donskoy, Anatoliy; Klyuyev, Arsentiy

doi:10.1051/e3sconf/20199107006

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…However, cavitation is most harmful through its wear and tear. Cavitation in the pumps is explained by the formation of discontinuities in those places where the pressure decreases to saturated vapor pressure at a given temperature, and water boils rapidly with the formation of vapor bubbles, which quickly decrease after passing to the high-pressure zone and the exhaustion of kinetic energy [15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Resultsmentioning

confidence: 99%

Erosion processes during non-stationary cavitation of irrigation pumps

Dzhurabekov¹,

Rustamov²,

Nasyrova

et al. 2021

E3S Web Conf.

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The article gives the main results of the study of the dynamics of wear of the working bodies of irrigation pumps, gives the main recommendations as a result of the study of pumping units in the presence of cavitation. The authors consider the cavitation coefficient as the minimum value of this expression, at which the beginning of cavitation is detected. The process of unsteady cavitation is accompanied by many significant effects in which the water flow becomes two-phase, with a corresponding change in its properties, which affects the pump's efficiency. The effect of particle size on the erosion rate is predominant only up to a certain size limit, i.e., 600-800 microns on the blades. After that, the erosion rate increases with a comparatively slower rate. This indicates that the particle size affects the erosion rate only up to a certain particle size.

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Section: Resultsmentioning

confidence: 99%

Erosion processes during non-stationary cavitation of irrigation pumps

Dzhurabekov¹,

Rustamov²,

Nasyrova

et al. 2021

E3S Web Conf.

View full text Add to dashboard Cite

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“…Currently, when simulating the working processes of compressors and displacement pumps, mathematical models with lumped and distributed parameters are used [6][7][8]. Unlike vane machines [9,10], models with lumped parameters are most widely used in displacement machines. This is due to following reasons:…”

Section: Introductionmentioning

confidence: 99%

Development and Research of Crosshead-Free Piston Hybrid Power Machine

et al. 2021

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This article considers the development and research of a new design of crosshead-free piston hybrid power machine. After verification of a system of simplifying assumptions based on the fundamental laws of energy, mass, and motion conservation, as well as using the equation of state, mathematical models of the work processes of the compressor section, pump section, and liquid flow in a groove seal have been developed. In accordance with the patent for the invention, a prototype of a crosshead-free piston hybrid power machine (PHPM) was developed; it was equipped with the necessary measuring equipment and a stand for studying the prototype. Using the developed mathematical model, the physical picture of the ongoing work processes in the compressor and pump sections is considered, taking into account their interaction through a groove seal. Using the developed plan, a set of experimental studies was carried out with the main operational parameters of the crosshead-free PHPM: operating processes, temperature of the cylinder–piston group and integral parameters (supply coefficient of the compressor section, volumetric efficiency of the pump section, etc.). As a result of numerical and experimental studies, it was determined that this PHPM design has better cooling of the compressor section (decrease in temperature of the valve plate is from 10 to 15 K; decrease in temperature of intake air is from 6 to 8 K, as well as there is increase in compressor and pump section efficiency up to 5%).

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