Double-walled duct assembly for aircraft anti-icing conduit...

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

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Details

F16L 39/04 (2006.01) B64D 15/04 (2006.01)

Patent

CA 2207808

Disclosed is a dust assembly for conducting compressed air from a fixed component to a component that is movable with respect to the fixed component. The duct assembly contains at least two telescoping, tubular conduit sections with seals between adjacent sections. An upstream transitional joint rotatably interconnects the outmost conduit section with an air supply means, while a downstream transitional joint rotatably interconnects the innermost conduit section with an air delivery means. A tubular double-wall spaced apart from the inner surface of the innermost conduit section forms an annular airspace between the tubular double-wall and the innermost conduit section. A second double-wall forms a second annular airspace between its downstream end and the upstream transitional joint. The annular airspace created by the double-walls protect the seals.

Conduit permettant d'acheminer de l'air comprimé d'une pièce fixe à une autre pièce, mobile par rapport à la pièce fixe. Le conduit comprend au moins deux sections tubulaires télescopiques reliées aux sections voisines au moyen de joints. Un joint de transition placé en amont raccorde, de manière à ce qu'ils puissent tourner, la section externe du conduit et un dispositif d'alimentation d'air, tandis qu'un joint de transition en aval relie la section interne du conduit avec un dispositif de distribution d'air. Une section de conduit tubulaire à double paroi, placée à une certaine distance de la surface interne de la section interne du conduit forme une couche d'air annulaire entre la section à double paroi et la section interne du conduit. Une seconde paroi double crée une seconde couche d'air annulaire entre sa partie en aval et le joint de transition en amont. La couche d'air annulaire créée par les doubles parois sert à protéger les joints.

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