Study on the Influence Mechanism of Outlet Valve Opening on Hydraulic Performance of Jingdian Pump Station
Abstract：To study the influence law of outlet valve opening on the hydraulic performance of high-head pump stations, this study took the Jingdian Pump Station as the research object, and combined theoretical analysis with actual operating data. It analyzed the impact mechanism of valve opening adjustment on the hydraulic performance of the pump station from four aspects: flow-head characteristics, power-efficiency characteristics, cavitation margin changes, and hydraulic losses. The research results show that there is a nonlinear relationship between valve opening and the hydraulic performance of the pump station. The flow rate increases most significantly when the valve opening is in the range of 30% to 70%. The optimal energy efficiency operation opening range is 65% to 85%, and the safe operation opening range is 35% to 95%. When operating at small openings, the risk of cavitation increases, and hydraulic losses increase sharply. Based on the research results, three strategies were proposed: flow demand control, energy-saving optimization control, and safe operation control. The research conclusions provide a theoretical basis for the scientific regulation of valves in high-head pump stations, which is of great significance for improving the operational efficiency of pump stations and ensuring system safety.
Keywords：Jingdian Pump StationOutlet Valve OpeningHydraulic Performance
Publication Date：2025-09-25
Online Publishing Date：2025-11-07(First online date of this platform, not the publication date of the document)
Pages：4( 66-69 )