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Irrigation and Melioration

Abstract

The purpose of the research is to increase the efficiency of pumping stations operation by improving the methods of uniform flow spreading in the front chamber and inlet of the pumping station and developing constructive measures to improve the hydraulic conditions for supplying the flow to the pumps. The improvement of the method of hydraulic calculation of the flow in the front chamber and the water intake chamber is given on the example of the head pumping station of the Jizzakh cascade. In the process of research, standard methods of full-scale and bench tests of pumps, methods of mathematical and hydraulic modeling, statistical processing of results and the creation of mathematical models based on the laws of hydromechanics were used. The article substantiates the choice of a technical solution to improve the hydraulic structure of the flow in front of the impeller of the pumps of the Jizzakh head pumping station. New technical solutions have been developed, including an element for influencing the flow installed in the water intake chamber of the pumps. This makes it possible to expand the ranges of stable, cavitation-free operation of the pump, to ensure an increase in the reliability of water supply to the pumping station, without resorting to complex and expensive reconstruction measures.

First Page

53

Last Page

56

References

Shomayramov M. A., Talipov Sh. G., Nasyrova N. R. Mеtody povyshеniya bеzopasnosti i ustoychivosti ekspluatatsii sistеm mashinnogo vodopod'еma [Methods of increasing the safety and stability of the operation of machine water lifting systems] Scientific and practical journal "Ways to improve the efficiency of irrigated agriculture" Novocherkassk, 2018. No.3(71), Pp. 118-123. (in Russian)

Amanifard N., Nariman-Zadeh N., Borji M. Modeling and Pareto optimization of heat transfer and flow coefficients in micro channels using GMDH type neural networks and genetic algorithms // Energy Conversion and Management. 2008. Vol. 49. Pp. 311-325.

Miao S.C., Yang J.H., Shi G.T. Blade profile optimization of pump as turbine // Advances in mechanical engineering, Vol. 7, No9, 2015. Pp. 1-9.

Rabiger K., Maksoud T., Ward J. Theoretical and experimental analysis of a multiphase screw pump, handling gas–liquid mixtures with very high gas volume fractions // Exp Therm Fluid. 2008. Vol. 32. No9. Pp. 1674-1701.

Cerantola D., Birk A. Numerically optimizing an annular diffuser using a genetic algorithm with three objectives // Proceedings of ASME Turbo Expo. Copenhagen, Denmark. 2012. Pp. 1033-1042.

R.R. Ergashev, O. Ya.Glovatsky Otsеnka nadyozhnosti ekspluatatsii gidromеkhanichеskogo oborudovaniya nasosnykh stantsiy [Assessment of the reliability of operation of hydromechanical equipment of pumping stations] Collection of scientific articles of the III international scientific and practical conference "Modern materials, equipment and technologies in mechanical engineering", dedicated to the 20th JSC "Uzavtosanoat", Andijon. 2016. Pp. 502-505. (in Russian)

O. Ya. Glovatsky, R.R. Ergashev, B.T. Kholbutaev, O. R. Azizov, A.B. Saparov Novyy mеtod raschеta spiralnogo otvoda gorizontalnykh sеntrobеzhnykh nasosov [A new method for calculating the volute of horizontal centrifugal pumps]. Journal "Irrigatsiya va Melioratsiya", 2020, Pp. 37-42. (in Russian)

Allaberdiev S.Z. Tеkhniko-ekonomichеskoе obosnovaniе rеkonstruktsii Dzhizakskoy golovnoy nasosnoy tsantsii [Feasibility study for the reconstruction of the Jizzakh head pumping station]. Collection of scientific articles of the XVI scientific-practical conference of young scientists and masters "Modern problems in agriculture and water management", "Modern problems of agriculture and water management". Tashkent, 2017. Pp. 230-232. (in Russian)

Oleg Glovatsky, Rustam Ergashev, Azamat Saparov, Mustafo Berdiev and Bobur Shodiev Cavitation-abrasive wear working collectors of pumps // IOP Conference Series: Materials Science and Engineering (2020) 869 042006.

Petrov A.I., Lomakin V.O., Semenov S.E. Puti povyshеniya enеrgoeffеktivnosti dinamichеskikh nasosov na osnovе sovrеmеnnykh kompyutеrnykh tеkhnologiy [Ways to improve the energy efficiency of dynamic pumps based on modern computer technologies] Engineering Journal: Science and Innovations, No. 4, 2013. URL: http: //engjournal.ru/ catalog / machin / hydro / 689.html. (in Russian)

Li Q.P. Research on design method of a helico-axial multiphase pump and its experimental studies on performances // 2nd International symposium on multiphase, non-Newtonian and reacting flows. Hangzhou People’s Republic of China. 2004. Pp. 308-312.

Glovatskiy OY, Sharipov Sh M, Ismailov NM and Saparov AB 2020 New methods of managing technological modes of connecting structures of pumping stations Scientific and practical journal "Ways to improve the efficiency of irrigated agriculture" Novocherkassk, No1 (77). Pр. 74- 79.

Ergashev R R. 2020New methods for geoinformation systems of tests and analysis of causes of failure elements of pumping stations IOP Conf. Ser.: Mater. Sci. Eng. 883 012015

Bazarov D, Krutov А N, Norkulov B, Obidov B and Nazarov B 2019 Experience of employment of computational models for water quality modelling E3S Web Conf., 97 (2019) 05030. DOI: https://doi.org/10.1051/e3sconf/20199705030.

Shaazizov F, Uralov B, Shukurov E and Nasrulin A 2019 Development of the computerized decision-making support system for the prevention and revealing of dangerous zones of flooding E3S Web of Conferences 97, 05040 FORM-2019.

A.I.Azimov, B. B. Khasanov, O. Ya.Glovatsky, N.R. Nasyrova Otsеnka effеktivnosti ekspluatatsii i bеzopasnosti nasosnykh stantsiy [Assessment of the efficiency of operation and safety of pumping stations] Scientific and practical journal "Ways to improve the efficiency of irrigated agriculture" Novocherkask, No2(70), 2018 Pp. 140-145.(in Russian)

O.Glovatsky, O.Azizov, F.Bekchanov, A.Gazaryan, M.Shomayramov, N.Ismailov Diagnostic tests of vertical pumps modernized pump stations // International Scientific Conference «Construction Mechanics, Hydraulics and Water Resources Engineering», (CONMEDCHYDRO-2020)

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