SAFETY DEVICE Russian patent published in 2003 - IPC

FIELD: pneumohydraulic devices; valves. SUBSTANCE: invention relates to devices aimed at protection of main lines and reservoirs of pneumohydraulic system from gauge pressure or for execution of pneumatic commands, for instance, for disconnection of emergency buoys. Proposed safety device contains housing with inlet chamber, pipeline, pyrochamber with slave mechanism and ignition and rupture member. Check valve is installed in pipeline connecting inlet reservoir with pyrochamber, and plug is hermetically fitted from side of pyrochamber outlet. Plug is hermetically connected with ignition coupled with powder charge arranged between plug and rupture member. Salve mechanism is made in form of instance return diaphragm hermetically secured on plug. EFFECT: improved reliability of device. 2 dwg