Performance Prediction of a Flow Control Valve

摘要

Flow control valves play an important role in the control of fluid power systems. Literature presents a great deal of works concerning hydraulic valves, nevertheless it seems to be lacking in studies on this typology of valve. In this work a simple mathematical model has been used in order to obtain steady state characteristics of a generic two-way flow control valve connected to a constant pressure supply circuit and a resistance type hydraulic load. The model has been later applied to the real geometry of a commercial valve. Dynamic behaviour analysis has been carried out by the use of a simulation tool. Simulating the dynamics of the valve, subjected to various load conditions, may suggest how to analyse the sensitivity of the valve to variations of the valve parameters, since a quick response essentially depends on the presence of damping orifices inside the valve.