Inerting device comprising safety means

Details Inerting device comprising safety means Inerting device comprising safety means

A - Human Necessities

62

C

A62C 99/00 (2010.01)

Patent

CA 2663031

The invention relates to an inerting arrangement (1) for setting and maintaining predeterminable inerting levels in a protective space (2) to be monitored. The inerting arrangement (1) comprises for this purpose a controllable inert gas system (10, 11, 12) for supplying inert gas, a feed pipe system (20), which is connected to the inert gas system (10, 11, 12) and can be connected to the protective space (2), in order to feed the inert gas supplied by the inert gas system (10, 11, 12) to the protective space (2), and an inert gas system control unit (30) which is designed to control the inert gas system (10, 11, 12) in such a way that an inert gas rate supplied by the inert gas system (10, 11, 12) assumes a value which is suitable for setting and/or maintaining a first predeterminable inerting level in the protective space (2). In order to ensure, even when there is a disruption in the control of the inert gas system (10, 11, 12) or when there is a failure of the inert gas system control unit (30), that the inert gas rate fed to the protective space (2) can in principle be regulated correspondingly such that a second predeterminable inerting level is set and/or maintained in the protective space (2), a correspondingly designed safety device (40, 41, 42, 43) is provided according to the invention.

L'invention concerne un dispositif d'inertisation (1) pour régler et maintenir des niveaux d'inertisation prescriptibles dans un espace protégé (2) à surveiller. Le dispositif d'inertisation (1) présente à cet effet : une installation à gaz inerte asservissable (10, 11, 12), pour fournir du gaz inerte; un système de tuyau d'alimentation (20), relié à l'installation à gaz inerte (10, 11, 12) et pouvant être relié à l'espace protégé (2) pour apporter à l'espace protégé (2) le gaz inerte fourni par l'installation à gaz inerte (10, 11, 12); et une unité de commande (30) d'installation à gaz inerte, qui est conçue pour asservir l'installation à gaz inerte (10, 11, 12) de façon à ce que le taux de gaz inerte fourni par l'installation à gaz inerte (10, 11, 12) prenne une valeur convenant pour régler et/ou maintenir un premier niveau d'inertisation prescriptible dans l'espace protégé (2). Selon l'invention, un équipement de sécurité (40, 41, 42, 43) adéquatement conçu est prévu pour obtenir que, même en cas de défaillance de l'asservissement de l'installation à gaz inerte (10, 11, 12) ou en cas de panne de l'unité de commande (30) d'installation à gaz inerte, le taux de gaz inerte apporté à l'espace protégé (2) puisse fondamentalement être régulé de manière à régler et/ou maintenir dans l'espace protégé (2) un second niveau d'inertisation prescriptible.

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