Replaceable corrosion seal for threaded connections

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

Patent

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Details

F16L 25/00 (2006.01) F16L 35/00 (2006.01) F16L 58/18 (2006.01)

Patent

CA 2432926

The threaded connection (10) between the pin (50) and the box (30) ends of two pipes (15,20) is sealed externally and internally to protect the threads (40,55) in the connection from exposure to corosive fluids. Seals (60,65) are provided at each axial end of the threads. External seals are formed by metal- to-metal engagement between the pin and box and a third metal body secured circumferentially about the pin. The metal body (90) may be fashioned into a desired annular pin seal surface to mate with and seal with the box at full makeup of the connection. The metal body can be removed and replaced as required to repair or reconstructed the pin seal surface.

La connexion filetée (10) entre les extrémités mâle (50) et femelle (30) de deux tuyaux (15,20) est hermétiquement scellée de manière externe et interne afin de protéger les filetages (40,55) de la connexion contre une exposition à des fluides corrosifs. Des joints (60,65) sont prévus à chaque extrémité axiale des filetages. Les joints externes sont formés par contact métal sur métal entre les éléments mâle et femelle et un troisième corps métallique (90) fixé sur la circonférence de l'élément mâle. Ce corps métallique peut être façonné de manière qu'il prenne la forme d'une surface mâle annulaire de scellement destinée à être engagée dans l'élément femelle afin d'effectuer un scellement hermétique lorsque le vissage de la connexion est complet. Au besoin, ce corps métallique peut être enlevé et remplacé afin de réparer ou de reconstruire la surface mâle de scellement.

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