Experimental study and application of admittance function of sleeve type water consecutive regulating valves

 In view of the inaccurate description problem of dynamic regulation characteristics of electric water consecutive regulating valves in pipeline network, based on the flow rate and valve resistance coefficient mathematical model of the pressure drop before and after regulating valves, puts forward a definition of the regulating valve admittance. Tests the differential pressure before and after regulating valves and flow rate at different opening, and establishes the opening mathematical regression equation of the valve admittance. Based on the equation, quantitatively presents the ideal flow characteristics and working flow characteristics.