Patent ID: 6386228
Filing Date: 2002-05-14
Classification: F15B,Y10T

Abstract:
In a system having a pressure vessel and a safety valve for the pressure vessel, a control device, comprising:a pressure-displacement transducer having a pressurized space, another space separate from said pressurized space, and an adjusting body, for converting a difference in pressure between said pressurized space and said other space into a movement of said adjusting body; a pilot part to be triggered by said adjusting body for activating the safety valve of the pressure vessel; a pressure-removal line for connecting the pressure vessel to said pressurized space; a blow-off tank having a given pressure; a drainage line for connecting said other space to said blow-off tank; a compensating line; and a hydraulic compensating system to be connected to said blow-off tank through said compensating line, said hydraulic compensating system producing a first force on said adjusting body from said given pressure, and said first force counteracting a second force on said adjusting body produced in said other space by said given pressure.