Coupling signals to flowlines

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 47/12 (2006.01) F17D 5/06 (2006.01) G08C 19/00 (2006.01) H04B 5/00 (2006.01) H04B 13/02 (2006.01)

Patent

CA 2432004

Coupling apparatus for allowing transmission of electrical signals between a flowline (1) and a communications unit (4). The coupling apparatus comprises first (5) and second (8) portions of magnetic material. The first portion is arranged to receive the second portion and at least partially defines a flowline receiving aperture. The first and second portions (5,8) together form a magnetic circuit around the aperture and the second portion carries a winding (9) arranged for electrical connection to the communications unit (4). The winding links with the magnetic circuit when the second portion (8) is received in the first (5) such that an alternating current in the winding will generate a corresponding current in a flowline disposed in the aperture and vice versa. The arrangement allows the first portion to be permanently mounted on a flowline and the second portion to be inserted in situ.

Le couplage de signaux permet de transmettre des signaux électriques entre une conduite d'écoulement (1) et une unité de communications (4). L'appareil de couplage comprend des première (5) et seconde (8) sections de matériau magnétique. La première section est agencée de façon à recevoir la seconde, et forme au moins partiellement un orifice accueillant la conduite. Les première et seconde sections (5,8) forment un circuit magnétique autour de l'orifice et la seconde section supporte un enroulement (9) agencé pour être en connexion électrique avec l'unité de communications (4). L'enroulement se lie au circuit de magnétique lorsque la seconde section (8) est reçue dans la première (5) de sorte que le courant alternatif de l'enroulement génère un courant correspondant dans la conduite placée dans l'orifice et vice versa. Cet agencement permet que la première section reste fixe sur une conduite et que la seconde section soit insérée in situ.

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