Insertable line stopper plug for pipelines

Details Insertable line stopper plug for pipelines Insertable line stopper plug for pipelines

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/10 (2006.01) F16L 55/124 (2006.01)

Patent

CA 2433621

This invention contemplates a resettable plug assembly (30) suitable for insertion into a pipeline from a transverse tee connection in order that flow may be stopped and pressure retained by the plug. The stopper plug is inserted in the upstream direction and utilizes a bypass valve to aid installation when there is flow. The seal (20) of the plug is expanded radially to contact the wall of the pipeline for sealing. Once in place the bypass valve is closed to stop the flow in the pipeline.

L'invention concerne un ensemble de bouchon réenclenchable pouvant être inséré dans un pipeline à partir d'une connexion en T transversale de manière à arrêter le courant et à retenir la pression au moyen du bouchon. Le bouchon d'arrêt selon l'invention est inséré à contre-courant et fait intervenir une soupape de dérivation afin de simplifier l'installation en présence de courant. Le joint du bouchon est étendu radialement afin d'entrer en contact avec les parois du pipeline de manière étanche. Une fois mis en place, la soupape de dérivation est fermée afin d'arrêter le courant dans le pipeline.

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