DEVICE FOR EMERGENCY PIPELINE SHUT OFF Russian patent published in 2016 - IPC F16K17/40 

FIELD: production of fittings.

SUBSTANCE: invention relates to locking devices of disposable (explosive) action and is intended for emergency shutdown of pipelines, through which products of an accident can enter environment. Device for emergency shut off pipelines includes, connected with pipeline, a housing with a channel, perpendicular to pipeline. In channel is a shutoff element equipped with an explosive drive, configured to translate in channel under action of explosion products formed when blasting explosive charge. Shutoff element is a hollow truncated cone. Channel in area of intersection with pipeline has a cone shape matching shape of shut-off element with taper angle of 5-10°. Diameter of smaller base of shutoff element corresponds to channel cross-section in said area at height of 0.6-0.8 of channel height in said area. Explosive drive used is a gas dynamic pressure source. Said pressure source is placed in channel, and in its housing, on side of area of intersection of channel with pipeline, there is a hole, closed by a destructible membrane. Opposite said membrane there is an explosive charge, detonation-connected to source of initiation arranged outside housing of explosive pressure generator. Shutoff element is fixed on device housing with formation of free space between inner wall of shutoff element and membrane.

EFFECT: technical result of claimed invention is improvement of efficiency of application.

4 cl, 1 dwg