A system for offshore transfer of liquefied natural gas

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 27/30 (2006.01) B63B 27/24 (2006.01)

Patent

CA 2389179

A system for transfer of liquefied natural gas (LNG) between two vessels (1, 2). The system comprises a coupling head (7) mounted at one end of a flexible pipe means (4) and arranged for attachment on a platform (19) at one end of one vessel (1) when it is not in use, and a connection unit (8) mounted at one end of the other vessel (2) and comprising a pull-in funnel (50) shaped for guided pull-in of the coupling head (7) to a locking position in which the pipe means (4) can be connected to transfer pipes (56) on the other vessel (2) via a valve means (31) arranged in the coupling head. The coupling head (7) is provided with a guide means (40) and is connected to at least one pull-in wire (42) for guided pull-in of the coupling head (7) into the connection unit (8) by a winch means (66) on the other vessel (2).

La présente invention concerne un système de transfert de gaz naturel liquéfié (GNL) entre deux récipients (1, 2). Le système comprend d'une part, montée à l'une des extrémités d'une manche (4), une tête de couplage (7) se fixant au repos à une plate-forme (19) équipant l'une des extrémités de l'un des récipients (1). Le système comprend d'autre part une unité de raccordement (8) montée à l'une des extrémités de l'autre récipient (2). Cette unité comporte un entonnoir (50) d'une forme conçue pour accueillir et guider la tête de couplage (7) jusqu'en position de verrouillage. Cette position permet à la manche (4) de se raccorder aux lignes de transfert (56) de l'autre récipient via des vannes (31) équipant l'intérieur de la tête de couplage. Pourvue de quilles de guidage (40), la tête de couplage (7) est reliée à au moins un câble d'enclenchement (42) tiré depuis l'autre récipient (2) par un treuil (66) de façon à guider la tête de couplage (7) jusqu'à son enclenchement dans l'unité de raccordement (8).

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