F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 15/04 (2006.01) F16L 58/18 (2006.01)
Patent
CA 2703031
The invention relates to a connection system for double-walled pipes (1, 2) comprising an inner pipe (12, 22) made of a stainless steel and an outer pipe (11, 21) which surrounds the inner pipe (12, 22) and has a greater tensile strength than the inner pipe (12, 22), wherein threads (13, 23) are formed at the ends of the outer pipe (11, 21), and also comprising a screw- type sleeve (3) with internal threads (31, 32) which correspond in terms of design to the external threads (13, 23), and comprising a sealing ring (4) which is arranged in the sleeve (3), is formed from a stainless material and, in the screwed-on state, seals the sleeve (3) with respect to the medium transported through the inner pipe (12, 22).
L'invention concerne un système de connexion pour tubes à double paroi (1, 2) comportant un tube intérieur (12, 22) en acier inoxydable, et un tube extérieur (11, 21) entourant le tube intérieur (12, 22), présentant une résistance à la traction supérieure à celle du tube intérieur (12, 22). Les extrémités du tube extérieur (11, 21) présentent des filetages (13, 23). Le système de connexion comporte également un manchon fileté (3) présentant des filetages intérieurs (31, 32), correspondant aux filetages extérieurs (13, 23), et une bague d'étanchéité (4) disposée dans le manchon (3), réalisée en matériau inoxydable, étanchant, à l'état vissé, le manchon (3) par rapport au fluide transporté dans le tube intérieur (12, 22).
H. Butting Gmbh & Co. Kg
Kirby Eades Gale Baker
LandOfFree
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