GAS FIRE EXTINGUISHING SYSTEM FOR ISOLATED ROOMS OF SPECIAL STRUCTURE WITH USE OF COMPRESSED NITROGEN Russian patent published in 2021 - IPC A62C35/00 

FIELD: gas fire extinguishing systems.

SUBSTANCE: invention relates to gas fire extinguishing systems and can be used, for example, in enclosed spaces and underground structures, for example, underground special fortifications (SF). In the event of a fire in one (or several) of the rooms 2 and the appearance of smoke, a fire detector 10 located in this room 2 is triggered, and a signal is sent from it to the control unit 12. From the control unit 12, the control signal is sent to the actuator of the shut-off valve 9 corresponding to the distribution line 8. This control signal gives the command to open the shut-off valve 9 of the distribution line 8. As a result of opening the shut-off valve 9 of the distribution line 8, compressed nitrogen from the nitrogen expansion tank 19 is fed through the gas supply line of compressed nitrogen 7 through the corresponding distribution line to supply compressed nitrogen 8 to the room 2 with the fire, while it is fed at the lower level near the floor surface. Flue gases from the burning room 2 at the level of the ceiling surface are sucked into the corresponding flue gas discharge line 16 and then enter the intermediate flue gas tank 15, from where they are removed from the special fortification structure 1 through the shaft 4 into the environment using a compressor 14 along the smoke removal line 13.

EFFECT: increased safety of operation by the service personnel of the gas fire extinguishing system and reduced time of fire extinguishing and removal of flue gases from the internal space of underground isolated rooms.

1 cl, 1 dwg