Securing shell assemblies to pipelines

Details Securing shell assemblies to pipelines Securing shell assemblies to pipelines

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/175 (2006.01) F16L 41/12 (2006.01) F16L 55/172 (2006.01)

Patent

CA 2409709

A method is provided for securing a shell assembly to a pipeline. A two part shell assembly (2, 3) is secured to pipeline (6) and holds in position an annular sealing arrangement (16, 17) located about a predetermined area of the outer surface of the pipeline. The sealing arrangement includes a containment ring (16) surrounding an annular seal (17). The containment ring is provided with connected through passages (16e) so that sealant can be introduced via a hole in the assembly into the passages to provide sealing between the ring and the pipeline, and between the ring and the assembly. Thus, should the annular seal (17) fail during service the introduced sealant provides a seal.

L'invention concerne un procédé pour fixer un ensemble coque à un pipeline. Selon l'invention, un ensemble coque en deux parties (2, 3) est fixé à un pipeline (6) et maintient en position un agencement annulaire d'étanchéité (16, 17) situé autour d'une zone prédéterminée de la surface extérieure du pipeline. Cet agencement d'étanchéité comprend un anneau de retenue (16) entourant un élément d'étanchéité annulaire (17). Cet anneau de retenue présente des passages traversant reliés (16a) de sorte qu'un matériau d'étanchéité peut être introduit dans les passages, par un trou pratiqué dans l'ensemble coque, pour assurer l'étanchéité entre l'anneau et le pipeline, ainsi qu'entre l'anneau et l'ensemble coque. Par conséquent, si l'élément d'étanchéité annulaire (17) subit une défaillance pendant l'utilisation, le matériau d'étanchéité introduit assure l'étanchéité.

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