BLAST-PROOF PANEL Russian patent published in 2018 - IPC E04B1/92 

FIELD: security facilities.

SUBSTANCE: invention relates to safety devices used in explosive and radioactive facilities, such as easy detachable panels and roof, blast guards and shields, excessive pressure valves. Explosion proof panel contains metal armored frame with metal armored lining and lead filler, and in the end faces having four fixed support branch pipes. In the coating of explosive facility four load-bearing bar are rigidly mounted which are inserted in telescopic manner into motionless supporting branch pipes of the panel. Filler is in form of an air-lead disperse system, wherein lead is in form of chips, and bearing rods are made flexible. Additionally, it contains elastic damping, disintegrating, disposable elements, which are secured to the support plates by means of damping base connected to the coaxially disposed flange bushing by screws, which upper flange is connected to the damping base, and the lower one is to the bushing type clamping element with grooves for the resilient element one of the ends fixing, made in the form of conical spring, which other end rests against the cup with central hole, in which the rod is coaxially located. On external surface of flange bushing there is, installed coaxially with the rod, a safety bushing made of brittle material, for example porcelain. Cup is also made from brittle collapsible material, for example porcelain, and with its shell is fixed to the clamping element by screws. At that, the coaxially positioned flange bushing, which upper flange is connected to the damping base, and the lower flange is to the bushing type clamping element, is made of a vibration damping material, for example polyurethane. Cavity between the resilient element outer surface, made in the form of conical spring, and cup with the central hole, in which the rod is coaxially located, is filled with the vibration damping material, for example polyurethane. Safety bushing rigidity is greater than the rigidity of cup made of brittle, collapsible material, since in order to include the conical spring into operation it must break first.

EFFECT: technical result consists in increase in the explosion-proof devices operation reliability during the emergency explosion at the facility and in ensuring of these structures return to their original position after the explosion.

1 cl, 2 dwg