Modelling and dynamics of single-stage pressure relief valve with directional damping

The dynamics of a direct operated relief valve with directional damping have been studied through Bondgraph simulation technique. The governing equations of the system have been derived from the Bondgraph model. While solving the system equations numerically, the pressure-flow characteristics of the valve port and the damper unit have been taken into consideration. From this study, some significant parameters of the valve response are identified, which can be modified to improve the dynamic characteristics of the valve.