Operational Reliability of the Pumping Station of the Karshi Main Canal
Abstract
The main goal of increasing the reliability of cascades of pumping stations of mechanical water lifting systems includes calculating the reliability of main facilities. Identification of the main problems of reliability and safety of operation of cascades is based on the stated theoretical premises. Effective measures to combat sediment and driftwood during water intake from the river into supply canals are considered. Using a full-scale survey of water intakes, digital modeling of the developed mathematical models of the supply channel of the main Karshi and Kuyumazar pumping stations was carried out with algorithms for calculating their operating modes. clarification of the physical nature of failures, especially emergency shutdowns. Studies taking into account non-stationary pressure pulsations in pumps, especially the interaction of mating units and working parts of the pump, have established a connection between pressure pulsations and flow structure, as well as a decrease in reliability when parameters change. The applied parametric diagnostics made it possible to estimate the spectrum of vibration acceleration amplitude on the pump impeller chamber. Mathematical models have been created for pressure pipelines of large-diameter pumping stations. Dependencies for calculating the total longitudinal and transverse vibrations of the pipeline with their interaction are proposed. Increasing reliability during the rehabilitation of cascades will significantly increase the service life of structures and pumping equipment, ensuring a guaranteed water supply.
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References
[2] N. Leveson, N. Dulac, et al., Engineering Resilience into Safety-Critical Systems, 2006. [Online]. Available: https://www.taylorfrancis.com
[3] JCSS (Joint Committee on Structural Safety), Probabilistic Assessment of Existing Structures, RILEM Publications, 2001.
[4] B. Kühn, “Assessment of existing steel structures - Recommendations for estimation of the remaining fatigue life,” Procedia Engineering, vol. 66, pp. 3–12, 2013. doi: 10.1016/j.proeng.2013.12.057
[5] K. Dzhuraev, A. Nasrulin, F. Shadibekova, and S. Kurbonov, “Geoinformation systems at the selection of engineering infrastructure of pumped storage hydropower for the Tuyamuyun complex,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 869, p. 042004, 2020. doi: 10.1088/1757-899X/869/4/042004
[6] O. Glovatskiy et al., “Practice of permanent presence and equipment of the Karshi main canal,” E3S Web Conf., vol. 401, 2023. doi: 10.1051/e3sconf/202340101022
[7] Y. Fu et al., “Numerical and experimental analysis of flow phenomena in a centrifugal pump operating under low flow rates,” ASME J. Fluids Eng., vol. 137, no. 1, p. 011102, 2015.
[8] NEESR Annual Report, Cornell Univ., Rensselaer Polytech. Inst., Sciencenter Discovery Center, USA, 2006.
[9] Y.G. Lu et al., “Research on the structure design of the LBE reactor coolant pump in the lead base heap,” Nucl. Eng. Technol., vol. 51, pp. 546–555, 2019.
[10] C.G. Rodriguez, B. Mateos-Prieto, and E. Egusquiza, “Monitoring of rotor-stator interaction in a pump-turbine using vibration measured with onboard sensors rotating with shaft,” Shock Vib., vol. 2014, p. 276796, 2014.
[11] M. Sinha, A. Pinarbashi, and J. Katz, “The flow structure during onset and developed states of rotating stall within a vaned diffuser of a centrifugal pump,” ASME J. Fluids Eng., vol. 123, pp. 490–499, 2001.
[12] N. Krause, K. Zähringer, and E. Pap, “Time-resolved particle imaging velocimetry for the investigation of rotating stall in a radial pump,” Exp. Fluids, vol. 39, pp. 192–201, 2005.
[13] Q.R. Si et al., “Numerical investigation of pressure fluctuation in centrifugal pump volute based on SAS model and experimental validation,” Adv. Mech. Eng., vol. 6, p. 972081, 2014.
[14] A. Posa, A. Lippolis, and E. Balaras, “Investigation of separation phenomena in a radial pump at reduced flow rate by large eddy simulation,” ASME J. Fluids Eng., vol. 138, p. 121101, 2016.
[15] N. Nasyrova, O. Glovatskiy, F. Artykbekova, and S. Sultanov, “Operation of the cascade of pumping stations of the Karshi Main Canal,” in Water Resources Engineering, Springer, 2021, pp. 287–296. doi: 10.1007/978-3-030-72404-7_23
[16] E. Kan, M. Mukhammadiev, and N. Ikramov, “Methods of regulating the work of units at irrigation pumping stations,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 869, p. 042009, 2020. doi: 10.1088/1757-899X/869/4/042009
[17] J.L. Parrondo, J. González, and J. Fernández, “The effect of the operating point on the pressure fluctuations at the blade passage frequency in the volute of a centrifugal pump,” ASME J. Fluids Eng., vol. 124, pp. 784–790, 2002.
[18] A.J. Seytov et al., “Mathematical models and optimal control algorithms for channels of irrigation systems,” Acad. Res. Educ. Sci., vol. 2, no. 5, 2021.
[19] O. Glovatsky et al., “Improvement of water intake in large machine water lifting systems (On the example of the Karshi main canal),” AIP Conf. Proc., vol. 2612, p. 020031, 2023. doi: 10.1063/5.0113298
[20] N. Ismoilov et al., “Technology of water supply to water inlets of pumping stations,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 1030, no. 1, p. 012156, 2021. doi: 10.1088/1757-899X/1030/1/012156
[21] T. Mirskhou1ava, “Scour in River Basin in its Bed Mechanism Forecast,” in Int. Symp. River Mechanism, Hong Kong, Thailand, 2003.
[22] N. Nasyrova et al., “Use of combined floating structures at water inlets of pumping stations,” in Proc. of EECE 2020, vol. 150, Springer, Cham, 2021, pp. 265–273. doi: 10.1007/978-3-030-72404-7_26
[23] T.R. Rashidov and D.A. Bekmirzaev, “Seismodynamics of pipelines interacting with the soil,” Soil Mech. Found. Eng., vol. 52, no. 3, pp. 149–154, 2015.
[24] R. Khujakulov, M. Zaripov, and U. Normurodov, “Subsidence deformations of the foundations of hydraulic structures,” E3S Web Conf., vol. 264, p. 03069, 2021. doi: 10.1051/e3sconf/202126403069
[25] R. Khujakulov, “Stresses in subsidence bases of flutbet models under the moisturizing conditions,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 1030, p. 012138, 2021. doi: 10.1088/1757-899X/1030/1/012138
[26] R. Khujakulov et al., “Determination of calculating stresses on the depth of loess grounds of hydraulic structures,” IOP Conf. Ser.: Mater. Sci. Eng., vol. 1030, p. 0121331, 2021. doi: 10.1088/1757-899X/1030/1/0121331
[27] R. Khujakulov, “Interaction of hydraulic structures and their subsidence bases,” AIP Conf. Proc., vol. 2612, p. 020038, 2023. doi: 10.1063/5.0113983
[28] R. Khujakulov and G. Samandarova, “Dependence of stress-strain state of hydraulic structures on infiltration moistening of foundation soils,” E3S Web Conf., vol. 401, art. no. 01046, 2023. doi: 10.1051/e3sconf/202340101046
