Underground pipe replacement technique

Details Underground pipe replacement technique Underground pipe replacement technique

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 1/028 (2006.01) E21B 7/30 (2006.01) F16L 55/165 (2006.01)

Patent

CA 2167811

A pipe replacement system (20) includes a stationary hydraulic jack (52) for pushing sections of new pipe (22) which, in turn, push a frontal cone expander (36) to break up old pipe (10) and define a path for the new pipe. A frontal apparatus (24) located in front of the new pipe and pushed thereby can include a hydraulic jack (40) for independently advancing the cone expander without operating the stationary hydraulic jack.

Système (20) de remplacement d'une conduite souterraine comportant un vérin hydraulique fixe (52) destiné à pousser les nouveaux tronçons (22) qui à leur tour poussent un expanseur à cône frontal (36) afin de rompre l'ancienne conduite (10) et d'ouvrir un chemin à la nouvelle conduite. Un appareil frontal (24) situé en tête de la nouvelle conduite et poussé par celle-ci peut comporter un vérin hydraulique (40) pouvant faire avancer l'expanseur à cône sans avoir à utiliser de vérin hydraulique fixe.

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