B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
B63B 35/03 (2006.01) B63B 35/04 (2006.01) F16L 1/12 (2006.01) F16L 1/20 (2006.01)
Patent
CA 2227163
A pipelaying vessel includes a pipe carrying drum (30) mounted with its axis parallel to the fore-aft direction of the hull. A launch structure (36) consists of telescopic arcuate members (38 and 58) which are relatively moveable to vary the launch angle. Pipe engaging clamps (46 and 48) engage the pipe along a curved path, and are reciprocally moveable along a curved track to tension the pipe. The curved path has an angle of curvature which is approximately equal to the residual curvature of the pipe drawn from the drum. The launch angle can also be adjusted by moving the angle or position of the curved path within a plane which is substantially perpendicular to the drum axis. An abandonment and recovery system is mounted on the launch structure, which is moveable alongside the drum as a level wind.
Navire de pose comprenant un tambour de transport des canalisations (30) installé de manière à ce que son axe soit parallèle au sens longitudinal de la coque. Une structure de lancement (36) se compose d'éléments arrondis télescopiques (38, 58) qui sont relativement mobiles, afin de modifier l'angle de lancement. Des pinces de serrage de la canalisation (46, 48) coincent cette dernière sur un tracé incurvé et elles sont alternativement mobiles sur une voie incurvée, afin de mettre en tension la canalisation. Le tracé incurvé possède un angle de courbure qui est à peu près égal à la courbure résiduelle de la canalisation déroulée à partir du tambour. L'angle de lancement peut aussi être réglé en déplaçant l'angle ou l'emplacement du tracé incurvé dans un plan qui est essentiellement perpendiculaire à l'axe du tambour. Un système d'abandon et de récupération est installé sur la structure de lancement, qui est mobile le long du tambour en tant que dispositif d'enroulement.
J. Ray Mcdermott S.a.
Ridout & Maybee Llp
LandOfFree
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