Methods of regulating the work of units at irrigation pumping stations

Kan, Eduard; Mukhammadiev, M. M.; Ikramov, Nazir

doi:10.1088/1757-899x/869/4/042009

Cited by 27 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The modernization of the pump improved its cavitation characteristics by eliminating the center of cavitation at the inlet to the impeller in the area of the driven disk, which increased the reliability and durability of the pump [3,13].…”

Section: Resultsmentioning

confidence: 99%

Experimental and theoretical studies of pumps of irrigation pumping stations

et al. 2021

View full text Add to dashboard Cite

The article presents the results of a study of the wear of individual pump elements, a decrease in their efficiency and significant losses. The nonidentical operation of the extreme and middle pumps was established. The uneven approach of water to the extreme units created reverse flows of water in the suction pipes, work with vibrations of modes close to cavitation. The modernization of the pumps improved the cavitation characteristics due to the elimination of the cavitation center at the impeller inlet in the area of the driven disk, which increased the reliability and durability of the pump. Diagnostics of irrigation pumps made it possible to substantiate proposals for the modernization of their main units and operating modes. The distribution of pumps according to the general level of vibration is shown, indicating the direction at which the maximum value of vibration displacement was recorded and the results of a comparative measurement of the vibration of the units of the pumping station-1 of the Karshi Main Channel (KMC).Studies of the pumps of large irrigation pumping stations have shown a reduction in vibration and an improvement in basic operating parameters. With the participation of the authors, new complex methods of operation are being developed, which allow increasing its reliability by predicting the technical condition.

show abstract

Section: Resultsmentioning

confidence: 99%

Experimental and theoretical studies of pumps of irrigation pumping stations

et al. 2021

View full text Add to dashboard Cite

show abstract

“…1. Studies carried out at RIWP with the participation of the authors have shown that the obtained ratios make it possible not only to use scientifically grounded methods for calculating the known intake structures of the PS (front chambers, water intakes), but also to analyze the design schemes of dynamic and kinematic flow supply conditions, which allow to establish the nature of the influence of flow parameters and soil particles of bottom and suspended sediments on the process of their layout [18,19]. 2.…”

Section: Discussionmentioning

confidence: 99%

“…Scientific research on intake structures is carried out in the fundamental research of the authors to study the problems of improving the theory of unsteady water movement in the "channel -pumping station" system to improve their interconnections [1][2][3][4]. It is the investigation of the laws of change in the kinematic characteristics of the flow in the intake structures of large pumping stations, mainly of the chamber and block type, and assessing the influence of the design of the intake structures on the hydraulic conditions for supplying water to the pumps, in particular, extreme ones, and on the operational parameters of the pumps during unsteady processes [8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Flow calculations in intake structures of hydropower plants

Gazaryan

Glovatskii

2021

E3S Web Conf.

View full text Add to dashboard Cite

Research is carried out for design institutes in which the structures of pumping stations are designed. In the regional conditions of the Republic of Uzbekistan, when operating pumping stations, the problem of protecting equipment from pumps and fin is of particular importance, as well as the stability of water supply structures and the creation of favorable hydraulic conditions for supplying flow to the pumps. The main factors in the flow conditions are the calculations associated with suspended particles. The purpose of the research was to study the kinematics of the flow of intake structures in the problem of protecting equipment from pumps and fin. The research subject was to identify the regularities of the operation of intake structures depending on the structure of the flow supply. Experimental methods of hydraulic research of intake structures of pumping stations are used in the work. The analysis of the current state of water supply to the intake structures of pumping stations is carried out based on calculation schemes, which make it possible to establish the nature of the influence of flow parameters and soil particles on this process.

show abstract

“…Their characteristic feature is intense hardening under micro-shock action and the formation of deformation martensite. Observations carried out under the conditions of waterjet deterioration show that alloyed steels are more resistant to suspended sediment than carbon steels [16][17][18][19][20][21][22][23][24]. In this respect, they are preferred, as is the choice of material for parts subject to waterjet erosion.…”

Section: Sh=idem;mentioning

confidence: 99%

Influence of cavitation on pressure pulsation through impeller of large pumps

et al. 2021

View full text Add to dashboard Cite

The article provides the main recommendations for studying the processes of cavitation development on the models of pumping units OPV-10-260 and V 20-13/45 with an impeller diameter Dr = 250 mm. The nature of the effect of cavitation depends on forms of pressure pulsation. The purpose of this work is to study abrasive-cavitation erosion of large pumps. The research objectives are to develop a methodology for calculating their operating modes, taking into account the minimum deterioration of working parts. Strongly developed cavitation leads to disruption of regular pulsations and an increase in the swing of the high-frequency component. Investigations of operating mode of pumps with deterioration of elements of flow section were carried out, and the characteristics of materials for the manufacture of hydromechanical equipment for resistance to cavitation deterioration were refined. According to experiments, the influence of pressure on the pressure fluctuation range begins to significantly affect if the pump pressure is less than 5 m. The nature of the effect of cavitation depends on the forms of pressure pulsation. The complexity of composition, high cost of high-alloy steels, and non-ferrous alloys make it irrational to use them in massive parts operating under cavitation-abrasive conditions. It is recommended to use the developed dependencies on machine water elevating systems to reduce deterioration by improving the quality of impeller materials.

show abstract

Methods of regulating the work of units at irrigation pumping stations

Cited by 27 publications

References 9 publications

Experimental and theoretical studies of pumps of irrigation pumping stations

Experimental and theoretical studies of pumps of irrigation pumping stations

Flow calculations in intake structures of hydropower plants

Influence of cavitation on pressure pulsation through impeller of large pumps

Contact Info

Product

Resources

About