G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/44 (2006.01) G01K 11/32 (2006.01) G01M 3/04 (2006.01)
Patent
CA 2543334
It is disclosed a telecommunication fiber optic cable (11) for gas pipeline application and having a built-in leakage detecting device, the cable comprising: an optical core (16) including a number of telecommunication optical fibers (12) , an other jacket (13) covering the optical core, and one or more gas leakage detector optical fibers (15) , wherein said one or more gas leakage detector optical fibers are enclosed within the outer jacket. Preferably, the cable comprises a linearly extending rod reinforcing system (14) comprising strength rods that force the cable to bend in a preferential bending place. Profitably, the leakage detector optical fibers are located at, or close to, a plane that is substantially orthogonal to the preferential bending plane and passing through the cable neutral axis.
L'invention concerne un câble de télécommunications optiques (11) pour application sur gazoduc à dispositif intégré de détection de fuite, comprenant: une âme optique (16) qui comporte un certain nombre de fibres optiques (12), une chemise externe (13) couvrant l'âme, et une ou plusieurs fibres optiques de détecteur de fuite de gaz (15), lesquelles sont enfermées dans la chemise externe. De préférence, le câble comporte un système de renforcement à tiges d'extension linéaire (14), ces tiges de force contraignant le câble à se courber selon une zone de courbure préférée. Il est avantageux d'implanter les fibres dans un plan ou près d'un plan sensiblement orthogonal par rapport au plan de courbure préféré et passant par l'axe neutre du câble.
Ginocchio Alessandro
Maritano Mauro
Pizzorno Massimo
Kirby Eades Gale Baker
Prysmian Cavi E. Sistemi Energia S.r.l.
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