COMBINED RELIEF AND SURGE PROTECTION DEVICE FOR COMPRESSIBLE OPERATING MEDIUM CONTAINERS OF HYDRODYNAMIC MACHINES

摘要

The invention relates to a combined relief and surge protection device for compressible operating medium containers used in operating medium supply systems of hydrodynamic machines. Said relief and surge protection device comprises a housing; an inlet chamber that can be coupled to the interior of the operating medium container and an outlet chamber that can be coupled to the relief chamber; a relief valve, comprising a valve member slidably mounted in the housing and a valve seat stationarily mounted in the housing, said valve seat being positioned in such a manner that it interacts with the valve member to block the connection between the inlet chamber and the outlet chamber; an actuator associated with the valve member; a surge protection device, comprising a baffle plate that is guided outside the housing on a guiding element linked with the valve member, said guiding element, at its end section facing away from the valve member, having a stop for the movement of the baffle plate; a seat on the housing which interacts with the baffle plate to close the inlet chamber, at least one restriction being provided between the baffle plate and the guiding element.