Safe Operation and Hydraulic Characteristics of Eccentric Spherical Valve in Hydropower Stations
WANG Baohe
WANG Haitao
Abstract：In order to ensure the safe and stable operation of eccentric spherical valves under sediment-laden flow conditions,this paper investigates the variations of valve hydraulic characteristics under different valve openings,sediment concentrations,and inlet flow velocities,based on a combination of numerical simulation and field experiments.The hydraulic characteristic patterns of the eccentric spherical valve during operation are analyzed and summarized,and relevant protective measures are proposed in terms of structural improvement,material selection,and valve opening and closing rules.This provides theoretical basis and technical support for its normal operation in sediment-laden flows.This study is of significant importance for the long-term safe and stable operation of hydropower stations.
Keywords：eccentric spherical valvehydropower stationhydraulic characteristicsflow resistance coefficientcavitation coefficient
Publication Date：2026-06-20
Online Publishing Date：2026-09-16(First online date of this platform, not the publication date of the document)
Pages：6( 107-112 )