E3S Web Conf.
Volume 274, 20212nd International Scientific Conference on Socio-Technical Construction and Civil Engineering (STCCE – 2021)
|Number of page(s)||10|
|Section||Building Constructions, Buildings and Structures|
|Published online||18 June 2021|
Design aspects of operation of water supply facilities of pumping stations
1 Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Tashkent 100000, Uzbekistan
2 Jizzakh Polytechnical Institute, Jizzakh, Uzbekistan
* Corresponding author: email@example.com
The aim of the research is to identify the hydrodynamic regularities in the improvement of operating modes in the water supply structures of pumping stations with vertical vane pumps. The authors studied the conditions for supplying water to the pumping station and the flow path of the pumps of the OP2...OP10 type. The curvature of the flow jets causes the swirl of the flow in front of the impellers, directed counterclockwise for the units located to the left of the axis in the direction of the flow and clockwise - located to the right. With such a flow structure, in the most unfavorable hydraulic conditions there are pumps, the direction of rotation of the impellers of which coincides with the direction of the natural swirl of the flow. The nature of hydraulic losses in the impeller of an axial pump in a wide range of feed changes within (0.1...0.4) Qо has been established. When the direction of rotation of the vortex α coincides with the direction of rotation of the pump, the decrease in flow reaches 0.5 Q0 for OPV 10 pumps, and (0.6 ... 0.7) Q0 for OP2...OP6 pumps. Impellers of axial-flow pumps must be designed taking into account shear phenomena.
Key words: pumping stations / vane pumps / pumping units / water supply / structures / water intakes
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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