A device for automatic completion of casing joint at high...

H - Electricity – 01 – R

Patent

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H01R 43/00 (2006.01) H02G 1/02 (2006.01)

Patent

CA 2170369

The apparatus of the present invention comprises two parts; an apparatus for automatically installing the supplemental (shunt) joint, and the shunt joint itself. The shunt joint provides both mechanical and electrical connection between two ends of an electrical cable, augmenting the existing joint which may remain in place. The installation device comprises a frame which may be lifted into place over the power line by a crane or helicopter. The frame is provided with a first linear actuator for placing at least first and second wedge elements fitted at each end of an existing socket joint. The frame also comprises a second linear actuator for placing first and second wedge sockets at least partly surrounding the line and cooperating with corresponding wedge elements. At least one threaded shaft, powered by an actuator motor, is provided to pull together the wedge sockets with the wedge elements. Together, the wedge elements and wedge sockets surround and lock around the line at each side of the socket joint. Once locked around the line, the coupling between the actuator motor and the threaded shaft may be severed, and the frame and associated elements removed from the line. The wedge elements and wedge sockets, clamped around the line, remain. The wedge sockets are firmly tied together across the existing joint by the one or more threaded shafts, forming a mechanical as well as electrical shunt joint in parallel to the existing joint.

Procédé et dispositif de fermeture automatique d'un raccord à manchon au niveau d'une ligne de transport de courant haute tension, au moyen d'un raccord supplémentaire sous forme d'un élément de dérivation. Ce dispositif comprend un premier support (5) conçu pour être soulevé par des moyens de levage tels qu'une grue ou un hélicoptère, et comprend en outre au moins une roue de commande (6, 7) devant être fixée à la ligne, ainsi qu'un moyen d'entraînement (8, 9) permettant d'entraîner ladite roue. Le support est pourvu d'un premier moyen (13) permettant de placer au moins des première et seconde clavettes (15, 16) de façon à les adapter à chacune des extrémités du raccord à manchon. Le support (5) comprend également un second moyen (14) permettant de placer des premier et second manchons de clavette (19, 20) de façon à entourer au moins en partie ladite ligne, et à coopérer avec chacune desdites clavettes. Au moins un élément de traction (23, 24) est prévu pour réunir, par l'intermédiaire d'un moteur (11), les manchons de clavette, ainsi que les clavettes qu'ils entourent, afin qu'ils soient verrouillés autour de la ligne de chaque côté du raccord à manchon. Le dispositif comprend également des moyens de transmission permettant de commander à distance le moyen d'entraînement, les premier et second moyens de positionnement et le moteur.

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