Installing pipes

Details Installing pipes Installing pipes

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/165 (2006.01) F16L 1/00 (2006.01)

Patent

CA 2274052

A replacement pipe is installed within an existing service pipe (1) by first advancing a sealing means (6, 8) along the existing pipe to a position adjacent its junction with a main pipe (2), then deploying the sealing means to seal against the inner surface of the existing pipe (in the example shown, by pumping sealant (10) into the space between the seal body (6) and the pipe (1), and subsequently advancing the replacement pipe along the existing pipe. The space between the two pipes is then filled with sealant and finally the sealing means is opened, in the example shown by withdrawing a guide rod (5) and its collar (7) on which the sealing means was advanced into position.

L'invention concerne un procédé d'installation d'un tuyau de remplacement à l'intérieur d'un tuyau de branchement (1) existant, qui consiste: à faire avancer des moyens d'obturation (6, 8) le long du tuyau existant jusqu'à un emplacement adjacent à la jonction de celui-ci avec le tuyau principal (2); à déployer les moyens d'obturation afin qu'ils entrent en contact hermétique avec la surface interne du tuyau existant (dans l'exemple cité, en injectant un matériau d'obturation (10) dans l'espace situé entre le corps d'obturation (6) et le tuyau (1)); à faire avancer le tuyau de remplacement le long du tuyau existant; à remplir l'espace situé entre les deux tuyaux avec un matériau d'obturation; et, finalement, à ouvrir les moyens d'obturation, dans l'exemple cité, en retirant une tige de guidage (5) et sa collerette (7) sur laquelle on avait fait avancer les moyens d'obturation pour les mettre en place.

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