METHOD OF ANTIFIRE PROTECTION OF UNCLOSED OPENINGS AND FIRE LOCALISATION DEVICE Russian patent published in 2008 - IPC A62C2/10 A62C3/02 

FIELD: protection means.

SUBSTANCE: invention is intended for localisation of fire originating in unclosed openings, for example, on paining large-size objects or on theatre stage by means of an elastic fire-protection screen. To shut off unclosed opening, the screen is divided into two panels, one of which facing the evacuation zone being used to provide for dust and gas protection of the unclosed opening and to seal a gap between it and the carcass, while the other one facing the zone of fire ensures protection against fire of the said unclosed opening. After evacuation of people from the dangerous zone and formation of dust and gas protection of the said unclosed opening, the space formed by the aforesaid panels is filled with inert gas. The device using the aforesaid method incorporates a kantledge arranged on the protective screen front part made up of a movable system of drums separating the said screen into two panels on its lowering to form a space after evacuation of people and a complete shutting off of the unclosed opening. The said space, with gap between the screen panel facing the evacuation zone and the carcass sealed, is filled with inert gas, for example, carbonic acid. The screen panel facing the evacuation zone is made from a dust and gas impermeable material, while the other screen panel is made from fire resistant material.

EFFECT: higher efficiency protection of unclosed openings and fire localisation.

2 cl, 4 dwg