Abstract
The main objective of this work is to perform numerical analysis of an electromagnetic normally-closed direct-acting ball valve with cylindrical seat. A functional diagram is developed using the MATLAB/Simscape/SimHydraulics programming language. The principal elements of the functional diagram are: the fixed-displacement hydraulic pump, the ball valve which is driven by an electromagnetic actuator, the pressure-relief valve, pressure and volumetric flow rate measuring devices and the hydraulic pipes. Two sets of analyses are performed, the first one for an ideal case, without the effects that are associated with the hydraulic pipes and the second one for the real case, with these effects. The valve flow factor is presented, comparatively, for both cases, as well as the volumetric flow rates through the ball valve and the pressure relief valve, and finally the pressure drop in the valve.
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