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A marine tensioner

A tensioner, marine technology, used in thin material handling, pipeline laying and maintenance, transportation of filamentous materials, etc., can solve problems such as increasing the size of the tensioner

Active Publication Date: 2013-07-10
ITREC BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When operating larger pipes, and / or pipes with larger fittings, the size of prior art tensioners increases accordingly

Method used

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  • A marine tensioner
  • A marine tensioner
  • A marine tensioner

Examples

Experimental program
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Embodiment Construction

[0062] exist Figure 1a to Figure 1c , a marine tensioner 1 is schematically shown. The tensioner 1 is adapted to operate an elongated article (not shown) from an offshore vessel, such as laying a pipeline from marine pipeline equipment on board, or for operating an umbilical for subsea installations from an umbilical handling device on board, The tensioner is adapted to absorb loads exerted on the tensioner by the elongated article.

[0063] The tensioner 1 comprises a tensioner frame 11, for example adapted to be supported in pipe laying equipment, which is Figure 1b China is in Figure 1a It is more clearly visible in the cutaway view in . The tensioner frame 11 includes an annular structure 10 that absorbs loads applied by an elongated article (not shown). In general, the annular structure 10 may comprise one or more moving parts which, in the open position, allow the lateral introduction of items into the tensioner frame 11 and close the annular structure 10 in a load...

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PUM

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Abstract

The invention is directed to a marine tensioner for handling an elongated article from an offshore vessel. The tensioner comprises a tensioner frame, multiple track units, wherein each track unit comprises an elongated chassis and an endless track supported by said chassis, wherein between the chassis of each track unit and the tensioner frame a connecting structure is provided that at least allows for lateral motion of the track unit with respect to the passage axis so as to adapt the position of the track unit. For each track unit a group of hydraulic squeeze cylinders is provided between the tensioner frame and the chassis of the track unit. The tensioner further comprises a tilting mechanism for the group of squeeze cylinders of each track unit, said tilting mechanism being adapted to tilt the hydraulic squeeze cylinders of a track unit between an operative position, wherein the squeeze cylinders are operative to exert a squeeze force in use of the tensioner for handling an elongated article, and an oversized article passage position.

Description

technical field [0001] The present invention relates to a marine tensioner for operating elongated items originating from offshore vessels, such as laying pipelines from marine pipeline equipment on board, where pipelines for transporting hydrocarbons (oil, gas, etc.) are laid on the seabed. The tensioner may also be embodied and / or used to operate other elongated items such as hydrocarbon risers, and umbilicals such as those derived from shipboard umbilical handling devices (e.g., with For subsea equipment, ROV, earth exploration tools, etc.), the tensioner is adapted to absorb the load exerted on the tensioner by the elongated article. Background technique [0002] Tensioners are well known in the field of marine pipeline laying and often have the task of supporting the weight of the launched pipeline. Tensioners are used in many pipe laying techniques such as S-lay (S-Lay), reel-lay (Reel-Lay), J-lay (J-Lay), but also for laying cables , fiber optic cable and so on. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/23
CPCB65H51/105F16L1/23B63B35/03F16L1/235
Inventor J·卢登伯格R·L·W·诺文斯
Owner ITREC BV
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