Pyrotechnical device and process for extinguishing fires

Details Pyrotechnical device and process for extinguishing fires Pyrotechnical device and process for extinguishing fires

A - Human Necessities

62

C

A62C 3/02 (2006.01) A62C 19/00 (2006.01) A62C 35/08 (2006.01)

Patent

CA 2268976

The present invention pertains to a pyrotechnical device and process for extinguishing fires, especially in case of a forest fire or a surface fire. The extin- guishing device comprises two flexible fire hoses (1, 2) arranged side by side and transversally relative to the direc- tion from which the danger (5) comes and designed so that both ends can be obturated. A fire suppressant (3, 4) is placed in or upon each hose and its ig- nition causes same to be sprayed and di- rected into the fire. In order to guaran- tee a targeted jet of the fire suppressant in the direction from which the danger comes, the impulse (Ii) from the first hose (1) turned in the direction opposite the danger is meant to be stronger than the impulse (I2) from the hose turned in the direction from which the danger comes. For the various hose (2) cross-sections, the quantity of blasting agents depends on the diameter of the hose turned to the danger, taking into account the density p of the fire suppressant under the inventive formula.

La présente invention porte sur un dispositif et un procédé pyrotechnique d'extinction d'incendie, notamment en cas d'incendie de forêt ou d'incendie en nappe. Le dispositif d'extinction comprend deux tuyaux (1, 2) flexibles installés côte à côte et transversalement par rapport à la direction d'où vient le danger (5) et pouvant être fermés aux deux extrémités, ainsi que, à l'intérieur de chacun de ces tuyaux ou sur chacun d'eux, un produit d'extinction (3, 4) dont la mise à feu provoque la pulvérisation en le précipitant dans l'incendie. Pour garantir un jet ciblé du produit d'extinction en direction du danger, il est prévu que l'impulsion (I1) partant du premier tuyau (1) tourné dans le sens inverse à celui d'où vient le danger, est plus forte que l'impulsion (I2) venant du tuyau orienté dans le sens d'où vient le danger. Pour les différentes sections de tuyaux (2), on calcule les quantités d'explosifs en fonction du diamètre du tuyau tourné vers le danger, compte tenu de la densité rho du produit d'extinction d'après la formule selon l'invention.

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