F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 15/08 (2006.01)
Patent
CA 2215044
A threaded pipe connection is disclosed for connecting two joints of pipe having externally threaded pin members, one pin member having external right-hand threads and the other pin member having left-hand threads. An internally threaded coupling having right and left-hand threads that mates with the threads on the pin members. An internal pressure seal ring is positioned to provide a seal between the ends of the pin members. A plurality of mating lugs and grooves on the ends of the pin members hold the pins from relative rotation when the connection is being made up. A metal-to-metal seal located between each pin member and the coupling adjacent each end of the coupling isolates the threads of the connection from the ambient environment thus sealing off the pipe annulus from external pressure due to hydrostatic head. Indicia such as engaging surfaces or aligned scribe lines on the pin members ensure that the sealing surfaces on the coupling and the pin members that form the external seals are positioned to properly engage and form seals when the connection is made up.
La présente invention a pour objet un raccord pour pieux filetés permettant de raccorder les extrémités de pieux à filetage extérieur, une des extrémités comportant un filetage à droite, l'autre extrémité comportant un filetage à gauche. Un manchon filetage intérieur comporte un filetage à droite et un filetage à gauche correspondant aux filets des pieux. Une bague d'étanchéité pour le maintien de la pression interne est positionnée pour assurer l'étanchéité entre les extrémités des pieux. Une pluralité d'ergots et de rainures aux extrémités des pieux interdisent tout mouvement relatif des éléments durant leur assemblage. Un joint métal contre métal inséré entre les extrémités des pieux et le raccord assure l'isolation du joint contre les conditions ambiantes scelle la région annulaire de l'ensemble contre les fuites de charge hydrostatique. Des repères graphiques assurent l'alignement approprié des éléments pour que les surfaces de scellement du raccord et des extrémités des pieux soient positionnées de manière à assurer l'étanchéité de l'assemblage.
Finlayson & Singlehurst
Hydril Company
LandOfFree
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