Leak tracing

G - Physics – 01 – M

Patent

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Details

G01M 3/28 (2006.01) G01M 3/00 (2006.01)

Patent

CA 2266603

A method of leak detection in a pipeline, characterised by the steps of: introducing into the pipeline (w) at an opening an initially loose fitting plug (11) having at least an expandable periphery (21); adopted for inflation by means of a flexible pipe (23); providing along the length of the flexible pipe (23) tracing means (31) for detecting the position of the plug remotely; allowing the plug (11) to be driven along the pipeline by a fluid pressure differential; inflating the plug to substantially block the flow of fluid; veryfying the pressure or flow conditions upstream of the plug to detect fluid leak; remotely detecting the position of the plug and relating it to the position of leak (x).

L'invention concerne un procédé de détection de fuites dans un pipeline. Ce procédé consiste à introduire dans ledit pipeline (w), au niveau d'une ouverture, un bouchon (11) adapté, à bout libre, présentant au moins un contour extensible (21) conçu pour être gonflé par l'intermédiaire d'un tuyau souple (23); à installer le long de ce tuyau souple (23) un organe de repérage (31) destiné à déceler l'emplacement de ce bouchon à distance; à provoquer l'entraînement de ce bouchon (11) le long du pipeline au moyen d'une différence de pression de fluide; à faire gonfler ce bouchon en vue de bloquer sensiblement l'écoulement de fluide; à vérifier les conditions de pression ou d'écoulement en amont de ce bouchon en vue de déceler une fuite de fluide; à déceler à distance l'emplacement du bouchon et à établir un rapport entre cet emplacement et celui de la fuite (x).

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