Cover for expandable connections

Details Cover for expandable connections Cover for expandable connections

E - Fixed Constructions

21

B

E21B 17/042 (2006.01)

Patent

CA 2580506

Employing a sleeve that spans the connection and a ring seal enhances the sealing integrity of expanded connections. The expansion of the connection brings the connection to the sleeve and engages the seal with the sleeve. The seal can be on the connection or the sleeve and the assemblies can be provided inside or outside the connection or in both places. A recess can be provided in either case so that after expansion the sleeve is flush to the interior or exterior wall.

Selon l'invention, l'utilisation d'un manchon tout autour du raccord ainsi que d'un joint annulaire permet d'améliorer l'intégrité d'étanchéité de raccords ayant subi une expansion. Lors d'une expansion, le raccord se rapproche du manchon et le joint vient au contact du manchon. Le joint peut être situé sur le raccord ou le manchon et les ensembles peuvent être utilisés à l'intérieur et/ou à l'extérieur du raccord. Un évidement peut être ménagé de sorte que le manchon soit au même niveau que la paroi intérieure ou extérieure après une expansion.

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