Inner tank whick is surrounded by an outer tank and serves...

F - Mech Eng,Light,Heat,Weapons – 17 – C

Patent

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Details

F17C 13/08 (2006.01) F17C 1/02 (2006.01)

Patent

CA 2650003

Disclosed is a flat inner container (3), especially an internal tank for a road vehicle, which is surrounded by an outer container (1) and is used for receiving a cryogenic liquid, particularly a fuel. Said inner container (3) is characterized by a combination of the following features: a longitudinally extending monolithic base (4) with a top wall (5) and a bottom wall (6) which are connected to also longitudinally extending sidewalls (7), and with at least two longitudinally extending, substantially straight webs (9) that connect the bottom wall (6) to the top wall (5) so as to form at least one longitudinally extending chamber (10) which is arranged between the webs, extends along the entire length of the base (4) as well as from the bottom wall (6) to the top wall (5), and has a predetermined width between the webs; and at least two caps (11) which tightly seal the two open ends of the base (4) at the periphery; the top wall and/or the bottom wall is/are provided with an arch relative to a planar reference top wall and/or reference bottom wall, the distance of said arch between the inner contour of the top wall and/or the bottom wall and the planar reference top wall and/or reference bottom wall amounting to less than 30 percent of the width of the chamber in the center between the webs.

L'invention concerne un récipient intérieur (3) de structure aplatie destiné à contenir une liquide cryogène, en particulier un carburant, et entouré par un récipient extérieur (1), en particulier un réservoir intérieur pour véhicule routier. L'invention se caractérise par la combinaison des caractéristiques suivantes : un corps de base (4) monobloc d'extension longitudinale présentant une paroi de couverture (5) et une paroi de base (6) qui sont reliées à des parois latérales (7) également d'extension longitudinale; au moins deux tiges (9) sensiblement rectilignes d'extension longitudinale qui relient la paroi de base (6) à la paroi de couverture (5) et qui forment entre elles au moins une chambre (10) d'extension longitudinale qui s'étend sur toute la longueur du corps de base (4) et respectivement de la paroi de base (6) à la paroi de couverture (5), et a une largeur prédéterminée entre les tiges; et au moins deux capuchons (11) qui referment hermétiquement les deux extrémités ouvertes du corps de base (4) respectivement en périphérie, la paroi de couverture et/ou la paroi de base présentant vis-à-vis d'une paroi de couverture de référence et/ou d'une paroi de base de référence, un bombement avec une distance médiane entre les tiges, respectivement mesurée entre le contour intérieur de la paroi de couverture et/ou de la paroi de base et la paroi de couverture de référence plane et/ou la paroi de base de référence plane, qui est inférieure à 30% de la largeur de la chambre.

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