Water shock when starting pumps in automated pumping stations

Abstract

The article is devoted to the study of water hammer when starting pumps in automated pumping stations with low inertia of moving masses and taking into account pressure losses when filling the elastic capacity of the pipeline. The article provides an analysis of scientific works devoted to the determination of shock pressure during the startup of pumping stations. The article presents an analytical study of shock pressure during the startup of automated pumping stations, which provides an accurate assessment of the optimal parameters of pumping units and pressure systems. The article obtained dependence for calculating the shock pressure when starting up automated pumping stations, taking into account energy loss along the length of the pipeline; it increases the reliability of the pressure system and ensures resource saving when designing pressure-hydraulic systems. A graphic-analytical method is proposed to determine the shock pressure during a hydraulic shock when starting a pump with an open valve installed at the beginning of the pressure pipeline. The results of theoretical studies are compared with experimental data on shock pressures when starting the main pumps of pumping stations. At the same time, a reliable agreement was obtained between the results of calculations of pressure pipelines based on the proposed dependence on water hammer and experimental data.