Tee connection to a pipeline

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

Patent

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F16L 41/06 (2006.01) F16L 55/175 (2006.01)

Patent

CA 2379405

A method is provided for securing a branch assembly (1) to a "live" pipeline (6). An upper part (2) of the assembly incorporating the branch (13) is positioned on the pipeline over a containment ring (16) located on the pipeline and within which there is an annular seal (17) surrounding an area (6a) from which the branch is to extend. A lower part (3) of the assembly is positioned on the pipeline beneath the upper part and the two parts are secured together so that the seal is compressed and an annular space (19) is left between the two parts and the external surface of the pipeline. Grout is injected into the annular space (19) and cures to bond the two parts forming the branch assembly in position on the pipeline. The use of grout avoids having to use welding techniques on a "live" pipeline. A coupon can be cut out of the pipeline, via the access through the branch.

La présente invention concerne un procédé destiné à fixer un assemblage de branchement (1) sur un pipeline en service (6). Une partie supérieure (2) de l'assemblage contenant le branchement (13) est positionnée sur le pipeline, sur un anneau d'arrêt (16), placé sur le pipeline, et doté d'un joint annulaire d'étanchéité (17) délimitant une zone (6a) à partir de laquelle s'étendra le branchement. Une partie inférieure (3) de l'assemblage est positionnée sur le pipeline en dessous de la partie supérieure, et les deux parties sont fixées ensemble de manière à ce que le joint soit comprimé et qu'un espace annulaire (19) soit laissé entre ces deux parties et la surface externe du pipeline. Un coulis est injecté dans l'espace annulaire (19) et durcit afin de lier les deux parties formant l'assemblage de branchement en position sur le pipeline. L'utilisation de coulis permet d'éviter l'utilisation de techniques de soudage sur un pipeline en service. Une découpe peut être pratiquée dans le pipeline via un accès à travers le branchement.

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