Purpose: experimental determination of the possibility of energy consumption reduction of pumping equipment of reclamation pumping stations due to the use of residual energy with a pressure fall in the pipeline network.
Materials and methods. Research and calculations were carried out at the Rassvet-8 pumping station of the Izobilnensky branch of the Federal State Financed Institution “Administration Office Stavropolmeliovodkhoz”. To determine the magnitude of the energy consumption reduction experimentally, the following were established: the hydraulic parameters of the operated pumping equipment in the suction and pressure distribution pipelines at maximum pressure in the network, the amount of residual energy between points in the pipeline when withdrawing from water consumption sources in the case of a decrease in pressure in the network.
Results. The hydraulic parameters of pumping equipment were determined experimentally: power consumption from 669.18 to 540.54 kW at heads from 106.88 to 126.52 m, deliveries from 0.46 to 0.28 m³/s, efficiency from 0.72 up to 0.68, total energy in the suction pipeline from 1.75 to 5.71 m, value at the point of selection of the source of water consumption at a distance of 1450 m from the building of the pumping station, head from 80.28 to 106.67 m, flow from 0.49 to 0.43 m³/s, suction pipe vacuum from 2.0 to 5.8 m; the calculated value of increasing the suction height of the pump and, as a result, reducing the pressure in the network from 10.24 to 17.92 m; the magnitude of the reduction in energy consumption with an increase in suction height using a jet apparatus from 28.04 to 70.24 kW at feed rates from 0.40 to 0.28 m³/s.
Conclusions: a comparison of the results of the theoretical studies of the residual energy presence in the case of a change in the points of selection by the consumer and the difference in the actual useful power at the points of measurement of 96.1 kW and experimental data on the magnitude of the reduction in energy consumption of 70.24 kW with an increase in suction height confirms the possibility use of residual energy and reduce the pressure and power consumption of the pumps.
doi: 10.31774/2712-9357-2022-12-4-136-153
pumping station, jet apparatus, hydraulic parameters, pumping unit, power consumption, network pressure, suction pipeline, vacuum amount
Urzhumova Yu. S., Tsyplenkov D. S., Panov V. B., Tarasyants S. A. Experimental determination of the energy reduction magnitude in reclamation pumping stations consumption due to the use of residual energy in the pipeline network. Land Reclamation and Hydraulic Engineering. 2022;12(4):136–153. (In Russ.). https://doi.org/10.31774/2712-9357-2022-12-4-136-153.
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