Vorrichtung zur Druckerhöhung eines Fluids mit einem Sicherheitsventil

Die vorliegende Erfindung betrifft eine Vorrichtung (1) zur Druckerhöhung eines Fluids mit einem betätigbaren Sicherheitsventil (19). The present invention relates to a device (1) for increasing the pressure of a fluid with an actuatable safety valve (19). The safety valve (19) is actuated here via a valve cam (20). The valve cam is mounted with an eccentric (10) on a drive shaft (11). The eccentric (10) moves a displacement piston (9), which hydraulically operates a double membrane (4, 5) of the pressure-increasing device (10). The safety valve (19) is provided in addition to a customary pressure valve (13) in the pressure channel (5). The pressure-increasing device (10) is used in particular for the further compression of media located in compressed-gas cylinders (2), and the additional safety valve (19) in the pressure channel (5) is intended to prevent escape of the compressed gas from the compressed-gas cylinder (2). The safety valve (19) here has a spring element (29) which forces the safety valve (19) to a first closed position. The valve cam (20) opens the safety valve (19) simultaneously with the pressure stroke of the displacement piston (9).