METHOD AND DEVICE FOR INTEGRATED VOLUMETRIC FIRE EXTINGUISHING IN AIR-TIGHT MANNED OBJECTS, MAINLY SUBMARINES Russian patent published in 2016 - IPC A62C31/00 

FIELD: fire safety.

SUBSTANCE: invention relates to submarines and other airtight manned objects fire safety ensuring devices. Method of complex volumetric fire fighting in airtight manned objects consists in of supply nitrogen with argon mixture or argon into room to reduce oxygen concentration. Supply is performed through nozzles and via water mist generator with pneumatic electro independent drive. Supplied from the water mist generating device gas is both working gas and component of two-phase water-and-gas mixture. Portion of nitrogen with argon mixture or argon supplied into room independently and/or together with portion of gas, in combination does not exceed portion, supposed for reducing content of oxygen in room less than 10 vol.% at single supply. Pressure increase rate and its absolute value is controlled by pressure relief compressor and it should not exceed absolute pressure of 0.162 MPa. In process of fire extinguishing at final argon content above 30 vol.% safe low oxygen content reduction in gas-air medium is carried out in room at level of 10 vol.% at single supply, and argon concentration in gas-air medium room after fire extinguishing is set above 30 vol.%, wherein oxygen concentration is set on long time of more that 10 hours from 14 to 12 vol.% and for short time is to 10 vol.% under conditions of normal or increased for not more than 0.162 MPa pressure in submarine room. To prevent effect of pressure increase during fire extinguishing pressure relief by compressor into reservoir (bottle) is performed through gas-air medium cleaning unit. To implement method integrated volumetric firefighting device is used, containing cylinders with gas, connected to gas nozzles via main pipelines and distribution pipelines, remotely controlled and manual valves to control over fire suppressant supply and instruments. Device includes atomized water generator with distribution pipeline for supply of nitrogen with argon or argon portion to generator to create two-phase gas-water mixture in generator.

EFFECT: disclosed is method of complex volumetric fire fighting in air-tight manned objects.

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