System for transferring fluids from a piping system in a...

F - Mech Eng,Light,Heat,Weapons – 17 – D

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137/74

F17D 1/14 (2006.01) B63B 21/50 (2006.01) E21B 19/00 (2006.01)

Patent

CA 2003725

A system for transferring fluids from a piping system which is firmly connected with a ship's hull (2) to a turning device (5), and vice versa, in which the turning device is rotatably connected with said hull. The turning device has a through hole (7) coaxially with its axis of rotation, through which a drill string, a rigid riser, or the like may be run by the aid of a derrick (16). Furthermore, turning device is arranged for anchoring to the sea floor and connection with at least one flexible riser being connected with respective devices which are firmly connected with the sea floor, and with hoses which are connected with the piping system in said hull. According to the invention the turning device is connected with said piping system, via at least one swivel means (21,22) of a kind known per se, for each fluid, each swivel means having first and second mutually rotatable swivel members (24,25), between which fluids may be transferred during mutual rotation of the swivel members, first and second swivel members (24, 25) of swivel means (21, 22) being substantially non-rotatably connected with turning device (5), and hull (2), respectively.

Appareil pour transférer les fluides d'une tuyauterie fixée solidement à une coque (2) de bateau, à un dispositif de rotation (5), et vice versa, dans lequel le dispositif de rotation est relié de façon pivotante à la coque en question. Le dispositif comprend un trou (7), tournant sur le même axe que l'axe de rotation du dispositif, dans lequel on peut faire descendre un train de tiges, un tube prolongateur rigide, ou un appareil semblable, par le biais d'une tour de forage (16). En outre, le dispositif de rotation est disposé de façon à s'ancrer dans le plancher océanique, et à être relié à au moins un tube prolongateur flexible, lui-même relié à des dispositifs semblables bien ancrés dans le plancher océanique, et à des tubes flexibles qui sont reliés à la tuyauterie dans la coque. Selon l'invention, le dispositif de rotation est relié à la tuyauterie en question par au moins un moyen de rotation (21, 22) d'un type reconnu, par exemple pour chaque fluide, chaque moyen de rotation comportant un premier et un deuxième élément de rotation (24, 25) entre lesquels les fluides peuvent être transférés au cours de la rotation mutuelle des éléments de rotation. Les premier et deuxième éléments de rotation (24, 25) des moyens de rotation (21, 22) sont sensiblement reliés de façon non rotative au dispositif de rotation (5) et la coque (2), respectivement.

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