Method for relining a branch conduit of a main conduit

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

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Details

F16L 55/165 (2006.01) F16L 55/18 (2006.01)

Patent

CA 2173728

The invention relates to a method for relining an underground branch conduit (10) of an underground main conduit (11) by a relining pipe (14) in the form of a radially stiff double-walled pipe with a corrugated outer wall (14A) and a smooth clastic inner wall (14B) being inserted by means of a traction rope (22), a draw shoe (20) and a pressure plate (25). A stop element (27) is provided on the traction rope (22), which can be pressed against the draw shoe by the motion of the traction rope in relation to the draw shoe.

La présente invention concerne un procédé pour refaire le chemisage d'une dérivation souterraine (10) d'une conduite principale souterraine (11) à l'aide d'un tube (14) formant un nouveau chemisage. Ce tube se présente sous la forme d'un tube à double parois, rigide dans le sens radial, avec une paroi extérieure ondulée (14A) et une paroi intérieure élastique lisse (14B). Ce tube est inséré au moyen d'une corde de traction (22), d'un patin de traction (20) et d'une plaque de pression (25). Un élément de butée (27) est prévu sur la corde de traction (22) et peut être poussé contre le patin de traction, lors du déplacement de la corde de traction par rapport au patin.

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