Thermal compensated pressure relief valve using shape memory materials for high temperature application

Abstract

A pressure relief valve, PRV, includes an inlet and an outlet defining a fluid flow path therebetween and a plunger. The plunger is moveable between a closed position and an open position, wherein, in the closed position, the plunger blocks the fluid flow path, and, in the open position, fluid may flow through the fluid flow path, wherein pressure at the inlet applies an opening force on the plunger, urging the plunger towards the open position. The PRV also includes a biasing means configured to apply a biasing force to the plunger, thereby biasing the plunger towards the closed position such that, when the biasing force is greater than the opening force, the plunger remains in the closed position, and when the opening force is greater than the biasing force and the plunger moves to the open position.