EXPLOSION-PROOF CHAMBER FOR BLASTING OPERATIONS AND METHOD OF LOCALISING TOXIC SUBSTANCES AND EXPLOSION PRODUCTS IN CASE OF ACCIDENTAL LOSS OF TIGHTNESS THEREOF Russian patent published in 2017 - IPC F42D5/45 B65B39/00 

FIELD: physics.

SUBSTANCE: explosion-proof chamber for blasting operations and a method of localising toxic substances and explosion products in case of accidental loss of tightness of the explosion-proof chamber relate to blasting operations and investigation of explosive high-speed processes and can be used in developing structures of sealed explosion-proof chambers, equipped with an additional protection stage, and methods of localising explosion products formed during accidental and deliberate explosion of an explosion-hazardous object, providing reliable and safe isolation of environmentally destructive effects. The device includes a sealed high-strength container with a cavity for placing an explosive device, which is equipped with an additional protection stage - a device for localization and removal of explosion products, which is triggered in case of accidental loss of tightness of the high-strength container during operation and which includes an opening device - pyromechanical puncheon, placed in an indestructible housing welded into the sealed high-strength container and dividing the cavity of the indestructible housing into a lower part, facing the sealed high-strength container, and an upper part, equipped with an outlet opening for interfacing using a pipe with a pre-evacuated container for collecting toxic substances and explosion products. The pyromechanical puncheon is separated from the cavity of the sealed high-strength container by a membrane and includes a bushing provided with a primer charge, connected by an ignition train to pyrocartridge and separated therefrom by a check valve. A striker has a variable cross-section, is equipped with an end position lock and is mounted on the bushing with possibility of movement relative thereto under the action of pressure of combustion products of the primer charge and their penetration of the membrane. The method includes holding toxic substances and explosion products in a closed volume and emergency evacuation thereof outside the zone of blasting operations, performed by opening the explosion-proof chambers using the pyromechanical puncheon by igniting its primer charge and boosting pressure of combustion products, under the action of which the striker of the puncheon pierces the wall of the explosion-proof chamber until a through-hole forms, through which toxic substances and explosion products are evacuated first into the lower part of the chamber of the indestructible housing, and then through drainage holes into the upper part, which is connected to the pre-evacuated container, to where they are blown off via a pipe.

EFFECT: invention broadens operational capabilities.

2 cl, 2 dwg