Fire and explosion suppression

A - Human Necessities – 62 – C

Patent

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Details

A62C 5/00 (2006.01) A62C 35/00 (2006.01) A62C 35/64 (2006.01)

Patent

CA 2442148

A fire and explosion suppression system comprises a source (5) of high pressure water which is fed to a misting nozzle (13) or other water mist generating means at one input of a mixing unit (6), and a source (14) of high pressure inert gas, such as nitrogen, which is fed along a pipe (20) to another input of the mixing unit (6). Inside the mixing unit (6), water mist, in the form of an atomised mist of very small droplet size is mixed with the pressurised gas and exits the mixing unit (6) at high pressure and high velocity along a pipe (22) and is thence discharged through spreaders (26, 28). Separation of the mist production from the actual discharge of the mist, and the entraining and transporting of the mist between these two stages at high pressure and high velocity, produces an output mist of very small droplet size which is carried by the entraining and transporting high pressure gas into the area to be protected, enabling a total flooding capability.

La présente invention concerne un système d'extinction d'incendie ou d'explosion comprenant une source (5) d'eau haute pression qui alimente un pulvérisateur (13) ou un autre élément de production d'eau pulvérisée, à une entrée d'une unité de mélange (6), et une source (14) de gaz inerte haute pression tel que de l'azote, qui alimente une autre entrée de l'unité de mélange (6) via un tuyau (20). A l'intérieur de l'unité de mélange (6), de l'eau pulvérisée sous la forme d'un brouillard atomisé de très fines gouttelettes, est mélangée au gaz pressurisé et sort de l'unité de mélange (6) à pression et vitesse élevées le long d'un tuyau (22) et est ainsi expulsée par les diffuseurs (26, 28). La séparation entre la production de brouillard et l'expulsion réelle du brouillard, et l'entraînement et l'acheminement du brouillard entre ces deux étapes, à pression et vitesse élevées, permettent d'obtenir un brouillard de sortie de très fines gouttelettes qui est transporté par le gaz haute pression d'entraînement et d'acheminement jusqu'à la zone à protéger, ce qui permet un arrosage complet.

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