A tunnel cover for a tunnel for controlled ventilation of gas

Details A tunnel cover for a tunnel for controlled ventilation of gas A tunnel cover for a tunnel for controlled ventilation of gas

E - Fixed Constructions

21

F

E21F 7/00 (2006.01) E21F 1/14 (2006.01) E21F 5/00 (2006.01)

Patent

CA 2584729

A system, in accordance with the invention, relates to ventilating a tunnel 1 in the event of fire or emission of gases or aerosols. The system comprises a tunnel cover 20 and a mobile fan 21. The tunnel cover 20 has an opening 29 through which the fan 21 blows air. This increases the static pressure at the cover 20, which change the direction of air at a desired direction. One of the advantages of the invention is that the tunnel cover 20 makes it possible to utilise considerably smaller mobile fans 21 to ventilate a tunnel 1 in the event of fire or emission of gases than when using earlier known techniques.

L'invention porte sur un système qui permet de ventiler un tunnel (1) dans le cas d'un incendie ou de l'émission de gaz ou d'aérosols. Le système précité comprend une gaine de tunnel (20) et un ventilateur mobile (21). La gaine de tunnel (20) comporte une ouverture (29) à travers laquelle le ventilateur souffle de l'air. L'invention permet de cette manière d'augmenter la pression statique à l'emplacement de la gaine (20) et de changer la direction de l'air en un emplacement désiré. L'invention offre l'avantage, parmi d'autres, de permettre l'utilisation de ventilateurs mobiles (21) considérablement plus petits que ceux utilisés selon l'étant antérieur de la technique pour ventiler un tunnel (1) dans le cas d'un incendie ou de l'émission de gaz ou d'aérosols.

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