EP2414219B1 - Bug tank für lng schiff - Google Patents

Bug tank für lng schiff Download PDF

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Publication number
EP2414219B1
EP2414219B1 EP10716592.0A EP10716592A EP2414219B1 EP 2414219 B1 EP2414219 B1 EP 2414219B1 EP 10716592 A EP10716592 A EP 10716592A EP 2414219 B1 EP2414219 B1 EP 2414219B1
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EP
European Patent Office
Prior art keywords
tank
bulkhead
pillar
ship
strake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10716592.0A
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English (en)
French (fr)
Other versions
EP2414219A1 (de
Inventor
Julien Sigaudes
Sébastien DELANÖE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gaztransport et Technigaz SA
Original Assignee
Gaztransport et Technigaz SA
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Publication date
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of EP2414219A1 publication Critical patent/EP2414219A1/de
Application granted granted Critical
Publication of EP2414219B1 publication Critical patent/EP2414219B1/de
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated

Definitions

  • the present invention relates to the production of sealed and thermally insulated tanks integrated into a load-bearing structure, in particular the hull of a vessel intended for the sea transport of liquefied gases and, in particular, the transportation of liquefied natural gas (LNG) to high methane content.
  • LNG liquefied natural gas
  • each of the aforementioned walls comprises, from the inside of the tank to the outside of the tank, a primary watertight barrier, a primary heat-insulating barrier, a secondary watertight barrier and a secondary heat-insulating barrier.
  • the primary watertight barrier and possibly the secondary watertight barrier are constituted respectively by metal strakes with raised edges towards the inside of the tank, said strakes being made of thin sheet of low coefficient of expansion and being welded edge to edge.
  • the strakes 14 of the inclined wall 13 extend from the front wall 4 to the rear wall 5, parallel to the edge 15 formed by the edges of the walls 13 and 6.
  • the strakes 14 are attached to the supporting structure via corner structures (not shown).
  • the strakes 14 undergo a thermal contraction.
  • the corresponding forces, represented by the arrows 16, are transmitted to the supporting structure, through the corner structures.
  • the strakes extend parallel to the longitudinal direction of the ship 1, from the rear wall 5 to the front wall 4. Some of these strakes (not shown) extend to the wall 4. Other strakes 17 extend from the wall 5 to the edge 15, where they have a truncated edge. To recover the forces due to the thermal contraction, represented by the arrows 18, it is necessary to fix the strakes 17 to the supporting structure, at the edge 15. The same need appears at the edges formed respectively by the intersection of the walls 6 and 12, the walls 7 and 11 and the walls 7 and 10.
  • the pillar 19 comprises a body 20 constituted by a stainless steel tube.
  • the body 20 is fixed to the supporting structure via anchoring plates 21.
  • the pillar 19 also comprises a primary plate 22 and a secondary plate 23.
  • a primary block 24 is arranged at the primary plate 22 and a shim secondary 25 is arranged at the secondary plate 23.
  • the secondary shim 25 serves to position the caissons forming the secondary thermally insulating barrier.
  • the truncated end of a strake 17 is fixed on a plywood beam (not shown), itself secured to the pillar 19 via the primary wedge 24.
  • the truncated end of a strake (not shown) of the secondary watertight barrier is welded to the plate 23.
  • the shape of the tank 3 has the advantage of simplicity.
  • this form has the disadvantage of reducing the carrying capacity of the ship 1 as well as complicating the architecture of the bow of the latter. It is therefore desirable to be able to use other shapes for the tip tank, in order to improve the transport capacity and simplify the architecture of the bow.
  • a tip tank of another form should not be too complicated to manufacture with respect to the tip tank 3. Indeed, it is necessary to avoid that the advantages of this other form are canceled by the manufacturing difficulties.
  • the document FR 2 826 630 describes a vessel comprising a tip tank of the same shape as the tip tank 3. This document proposes another arrangement for the Invar strakes of the wall of background. This arrangement involves the use of particular panels at the plane of symmetry of the bottom wall.
  • a problem that the present invention proposes to solve is to provide a ship that does not exhibit at least some of the aforementioned drawbacks of the prior art.
  • an object of the invention is to provide an advanced tank whose shape can improve the transport capacity and simplify the architecture of the bow.
  • Another object of the invention is to provide such a tank that can be manufactured easily, limiting the number of elements to manufacture and assemble.
  • the solution proposed by the invention is a vessel comprising a carrying structure and a sealed and thermally insulated tip tank for containing liquefied natural gas, said tip tank comprising a plurality of tank walls attached to said supporting structure, each tank wall.
  • a primary watertight barrier, a primary heat-insulating barrier, a secondary watertight barrier and a secondary heat-insulating barrier presenting successively, in the direction of the thickness from the inside to the outside of said tip tank, a primary watertight barrier, a primary heat-insulating barrier, a secondary watertight barrier and a secondary heat-insulating barrier, a first wall and a second wall of said vessel walls being adjacent at one edge, the primary watertight barrier of said first wall comprising at least a first strake connected at said edge to said carrier structure via a pillar, characterized in that the primary watertight barrier of said second wall comprises end at least a second strake connected at said edge to said supporting structure via said pillar.
  • two strakes of two adjacent walls can be connected, at their truncated ends, to the supporting structure by a single pillar.
  • the number of pillars to be manufactured and installed is therefore limited.
  • it allows to design a tank shape in which two adjacent walls have strakes connected at their truncated ends to the carrier structure at a common edge.
  • a proposed tank shape makes it possible to increase the LNG transport capacity and to simplify the architecture of the bow of the vessel.
  • said carrier structure has a first part parallel to said first wall and a second part parallel to said second wall, said pillar being fixed to said first part.
  • the strakes of the two adjacent walls are connected to one and the same section of the supporting structure. This avoids the hyperstatism of the system.
  • said pillar comprises at least one plate, said at least one plate having a first portion parallel to the first panel and a second portion parallel to the second panel, said first rack being attached to the pillar at said first portion and said second rack being attached to the pillar at said second portion.
  • This structure makes it possible to have a first portion of the plate at the level of the first wall, and a second portion of the plate deported at the level of the second wall.
  • said first strake is attached to a beam connected to said pillar, said pillar having a fallen edge preventing the beam from moving away from said first wall.
  • the second strake can be attached to a beam behind a fallen edge. The beam and the dropped edge allow the pillar to take up a vertical component of the forces generated in the strakes.
  • said tip tank comprises, among said plurality of tank walls, a ceiling wall and two inclined walls adjacent to the ceiling wall, said ceiling wall and said two inclined walls having a rectangular shape.
  • Rectangular walls are easily achievable and do not involve the use of pillars.
  • said first wall and said second wall have a trapezoidal shape and are respectively parallel and oblique with respect to a longitudinal direction of the ship.
  • said first strake and said second strake extend respectively parallel and obliquely with respect to said longitudinal direction.
  • This state-of-the-art tank shape increases the LNG transport capacity and simplifies the architecture of the bow of the vessel.
  • the Figures 4 to 6 represent a tip tank 53 which has a shape different from the tip tank 3.
  • the tip tank 53 comprises a front wall 54 and a bitter wall 55, perpendicular to the longitudinal direction of the ship.
  • the tip tank 53 also includes a bottom wall 56, a ceiling wall 57, two side walls 58 and 59 and four inclined walls 60, 61, 62 and 63 that extend from the front wall 54 to the rear wall 55.
  • the ceiling wall 57 and the inclined walls 60 and 61 are rectangular and parallel to the longitudinal direction of the ship.
  • the tip tank 53 is identical to a standard cylindrical tank 2.
  • the side walls 58 and 59, the inclined walls 62 and 63 as well as the bottom wall 56 have trapezoidal shapes.
  • the walls 56, 58 and 59 are arranged parallel to the longitudinal direction of the vessel.
  • the walls 62 and 63 are arranged obliquely with respect to the longitudinal direction of the ship.
  • the shape of the tip tank 53 makes it possible to increase the LNG transport capacity and to simplify the architecture of the bow of the ship.
  • each wall of the tip tank 53 comprises, from the inside of the tank to the outside of the tank, a primary watertight barrier, a primary thermally insulating barrier, a watertight barrier secondary and a secondary thermally insulating barrier.
  • the primary watertight barrier and the secondary watertight barrier are constituted respectively by metal strakes with raised edges towards the inside of the tank, said strakes being made of thin sheet of low coefficient of expansion and being welded edge to edge.
  • the strakes of the inclined wall 63 extend from the front wall 54 towards the rear wall 5, obliquely with respect to the longitudinal direction of the ship. Some of these strakes (not shown) extend to the rear wall 55. It can be seen on the figure 4 that other strakes 64 extend from the front wall 54 to the edge 65, formed by the intersection of the walls 63 and 56, where they have a truncated edge. To recover the forces due to the thermal contraction, represented by the arrows 66, it is necessary to fix the strakes 64 to the supporting structure, at the edge 65.
  • the strakes extend parallel to the longitudinal direction of the ship, from the rear wall 55 to the front wall 54. Some of these strakes (not shown) extend to the wall 54. D Other strakes 61 extend from the wall 55 to the edge 65, where they have a truncated edge. To recover the forces due to the thermal contraction, represented by the arrows 68, it is necessary to fix the strakes 67 to the supporting structure, at the edge 15.
  • edge 65 it is necessary to connect two sets of strakes to the supporting structure, one for each wall.
  • the number of pillars to be manufactured and installed in the tank would be high. The manufacture of the tank would be tedious and expensive.
  • the strakes 64 and the strakes 67 are connected to the carrier structure, at the edge 65, by a single series of pillars of a new design. These pillars are called "bi-oblique pillar" and an example is shown on Figures 7 and 8 .
  • the pillar 69 comprises a body 70 constituted by a stainless steel tube.
  • the body 70 is fixed to the supporting structure by means of anchoring plates 71.
  • the supporting structure comprises in particular a panel 81, to which the bottom wall 56 is attached, and a panel 82, to which the inclined wall 63 is fastened.
  • figure 8 also shows anchoring devices 83 for fixing a box (not shown) of the secondary thermally insulating barrier.
  • the body 70 extends perpendicular to the pan 81 and the anchoring plates 71 are welded to the pan 81.
  • the configuration of the body 70 and the anchoring plates 71 is the same as in the tip tank 3 of FIG. the prior art.
  • the number of parts references in production is limited.
  • it can use the same tools and methods for welding the anchor plates 71 and the body 70.
  • the anchoring plates 71 allow, like the anchoring plates 11, a height adjustment.
  • the pillar 69 also comprises a primary plate 72 and a secondary plate 73, fixed to the body 71.
  • the primary plate 72 comprises a portion 78 parallel to the pan 81 and a portion 79 offset and parallel to the pan 82.
  • the secondary plate 73 comprises a portion 80 parallel to the pan 81 and a portion 86 offset and parallel to the pan 82.
  • Reinforcing plates 76 connect the body 70 to the second plate 73 and to the anchoring plates 71.
  • a tube 77 connects the portion 86 of the second plate 73 to the portion 79 of the first plate 72.
  • the reinforcing plates 76 and the tube 77 contribute to confer on the pillar 69 a rigid structure, for transmitting stresses stresses to pan 81 of the supporting structure.
  • the pillar 69 makes it possible to anchor the strakes of two adjacent walls on one and the same panel of the supporting structure, the system's hyperstatism is avoided.
  • Two primary shims 74 are arranged at the primary plate 72, respectively on the portions 78 and 79. Each primary shim 74 has a dropped edge 84.
  • Two secondary shims 75 are arranged at the level of the secondary plate 73, respectively on the portions 80 and 86. Each secondary block 75 has a dropped edge 85.
  • the truncated end of a strake 67 is fixed on a plywood beam (not shown), itself secured to the pillar 69 via the primary wedge 74 of the portion 78 and the truncated end of a strake. 64 is fixed on a plywood beam (not shown), itself secured to the pillar 69 via the primary wedge 74 of the portion 79.
  • the truncated ends of the strakes (not shown) of the secondary sealed barrier are welded to the secondary plate 73, respectively on the portions 80 and 86.
  • the pillar 69 can transmit the forces generated in the impervious barriers of the inclined wall 63, in addition to the forces generated in the impermeable barriers of the bottom wall 56.
  • the number of pillars to be manufactured and installed is therefore limited.
  • the manufacture of the tip tank 53 is thus simplified and less expensive.
  • the ship manufacturer can use the same tools and processes as in the case of Pier 19, thus taking advantage of a dominated and approved technology.
  • the forces represented by the arrows 66 and 68 comprise a vertical component, that is to say perpendicular to the pan 81.
  • the plywood beams mentioned below are arranged under the dropped edges 84. Efforts are resumed at the primary level by the falling edge 84. At the secondary level, they are taken up by the welding of the strakes on the secondary plateau 73.

Claims (5)

  1. Schiff mit einer tragenden Struktur und einem dichten und wärmegedämmten Spitztank (53), der verflüssigtes Erdgas enthalten soll, wobei der genannte Spitztank mehrere Tankwände (54, 55, 56, 57, 58, 59, 60, 61, 62, 63) aufweist, die an der tragenden Struktur befestigt sind, wobei jede Tankwand nacheinander, in Richtung der Dicke von innen nach außen des genannten Spitztanks, eine erste dichte Barriere aufweist, eine erste wärmedämmende Barriere und eine zweite dichte Barriere sowie eine zweite wärmedämmende Barriere, wobei eine erste Wand (56) und eine zweite Wand (63) unter den genannten Tankwänden im Bereich einer Kante (65) angrenzend sind, wobei die erste Wand (56) und die zweite Wand (63) eine Trapezform aufweisen und sich jeweils parallel und quer in Bezug auf eine Längsrichtung des Schiffes erstrecken, so dass die Kante (65) in Bezug auf die Längsrichtung des Schiffes quer verläuft, wobei die erste dichte Barriere der genannten ersten Wand mindestens einen ersten Gang (67) umfasst, der sich parallel zur Längsrichtung des Schiffes erstreckt und ein im Bereich der Kante abgestumpftes Ende aufweist, wobei der erste Gang (67) im Bereich der genannten Kante anhand eines Pfeilers (69) mit der genannten tragenden Struktur verbunden ist, dadurch gekennzeichnet, dass die erste dichte Barriere der genannten zweiten Wand mindestens einen zweiten Gang (64) aufweist, der sich in Bezug auf die Längsrichtung des Schiffes quer erstreckt und im Bereich der Kante ein abgestumpftes Ende aufweist, wobei der zweite Gang im Bereich der genannten Kante anhand des genannten Pfeilers (69) mit der genannten tragenden Struktur verbunden ist.
  2. Schiff gemäß dem vorangehenden Anspruch, bei dem die genannte tragende Struktur eine erste Schräge (81) aufweist, die sich parallel zur genannten ersten Wand erstreckt, und eine zweite Schräge (82), die parallel zur genannten zweiten Wand verläuft, wobei der genannte Pfeiler an der ersten Schräge befestigt ist.
  3. Schiff gemäß dem vorangehenden Anspruch, bei dem der genannte Pfeiler mindestens eine Platte (72, 73) aufweist, wobei mindestens eine Platte einen ersten Abschnitt (78, 80) aufweist, der parallel zur ersten Schräge verläuft, und einen zweiten Abschnitt (79, 86), der sich parallel zur zweiten Schräge erstreckt, wobei der erste Gang im Bereich des genannten ersten Abschnitts am Pfeiler befestigt ist und der genannte zweite Gang im Bereich des genannten zweiten Abschnitts am Pfeiler befestigt ist.
  4. Schiff gemäß einem der vorangehenden Ansprüche, bei dem der genannte erste Gang an einem mit dem genannten Pfeiler verbundenen Balken befestigt ist, wobei der genannte Pfeiler einen abfallenden Rand (84) aufweist, der den genannten Balken daran hindert, sich von der genannten ersten Wand zu entfernen.
  5. Schiff gemäß einem der vorangehenden Ansprüche, bei dem der genannte Spitztank unter den genannten mehreren Tankwänden eine Deckenwand (57) und zwei schräge Wände (60, 61) umfasst, die an die Deckenwand angrenzen, wobei die genannte Deckenwand und die genannten zwei schrägen Wände eine rechteckige Form aufweisen.
EP10716592.0A 2009-03-31 2010-03-29 Bug tank für lng schiff Active EP2414219B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0952046A FR2943616B1 (fr) 2009-03-31 2009-03-31 Cuve de pointe bi-oblique pour gnl.
PCT/FR2010/050573 WO2010112748A1 (fr) 2009-03-31 2010-03-29 Cuve de pointe bi-oblique pour gnl

Publications (2)

Publication Number Publication Date
EP2414219A1 EP2414219A1 (de) 2012-02-08
EP2414219B1 true EP2414219B1 (de) 2013-08-14

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EP10716592.0A Active EP2414219B1 (de) 2009-03-31 2010-03-29 Bug tank für lng schiff

Country Status (12)

Country Link
EP (1) EP2414219B1 (de)
JP (1) JP5599006B2 (de)
KR (1) KR101430063B1 (de)
CN (1) CN102300769B (de)
AU (1) AU2010231306C1 (de)
BR (1) BRPI1009985A2 (de)
ES (1) ES2435252T3 (de)
FR (1) FR2943616B1 (de)
MY (1) MY154121A (de)
RU (1) RU2518121C2 (de)
SG (1) SG172828A1 (de)
WO (1) WO2010112748A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN2014DN06600A (de) 2012-02-22 2015-05-22 Grace W R & Co
US20150133584A1 (en) 2012-05-04 2015-05-14 W R Grace & Co.-Conn. Method For Treating Clay And Clay-Bearing Aggregates And Compositions Therefor
US10526052B2 (en) * 2015-10-27 2020-01-07 Hyundai Heavy Industries Co., Ltd. Liquefied gas carrier

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU950585A1 (ru) * 1979-02-08 1982-08-15 Николаевский Ордена Трудового Красного Знамени Кораблестроительный Институт Им.Адмирала С.О.Макарова Судно дл перевозки сжиженных газов при атмосферном давлении
JP2771092B2 (ja) * 1993-03-17 1998-07-02 日立造船株式会社 輸送船用タンク
JP2922085B2 (ja) * 1993-03-17 1999-07-19 日立造船株式会社 輸送船用タンク
FR2709725B1 (fr) * 1993-09-09 1995-11-10 Gaz Transport Cuve étanche et thermiquement isolante intégrée à la structure porteuse d'un navire ayant une structure d'angle simplifiée.
FR2724623B1 (fr) * 1994-09-20 1997-01-10 Gaztransport Et Technigaz Cuve etanche et thermiquement isolante perfectionnee integree dans une structure porteuse
US5727492A (en) * 1996-09-16 1998-03-17 Marinex International Inc. Liquefied natural gas tank and containment system
JP2001063681A (ja) * 1999-08-25 2001-03-13 Mitsubishi Heavy Ind Ltd 液化天然ガスタンク用防熱箱の取付構造
FR2813111B1 (fr) * 2000-08-18 2002-11-29 Gaz Transport & Technigaz Cuve etanche et thermiquement isolante aretes longitudinales ameliorees
FR2826630B1 (fr) * 2001-06-29 2003-10-24 Gaz Transport & Technigaz Cuve etanche et thermiquement isolante avec aretes longitudinales obliques
KR100977647B1 (ko) * 2002-03-28 2010-08-24 에스티엑스 핀란드 오와이 선박의 중량을 감소하고 종방향 강도를 최적화하기 위한 방법 및 선박
FR2861060B1 (fr) * 2003-10-16 2006-01-06 Gaz Transport & Technigaz Structure de paroi etanche et cuve munie d'une telle structure
US7137345B2 (en) * 2004-01-09 2006-11-21 Conocophillips Company High volume liquid containment system for ships
DE102005057451A1 (de) * 2005-12-01 2007-06-14 Tge Gas Engineering Gmbh Vorrichtung zur Lagerung eines Tankes in einem Schiff

Also Published As

Publication number Publication date
AU2010231306A1 (en) 2011-10-13
AU2010231306C1 (en) 2014-03-06
RU2518121C2 (ru) 2014-06-10
ES2435252T3 (es) 2013-12-17
AU2010231306B2 (en) 2013-08-29
FR2943616A1 (fr) 2010-10-01
JP2012521929A (ja) 2012-09-20
WO2010112748A1 (fr) 2010-10-07
JP5599006B2 (ja) 2014-10-01
SG172828A1 (en) 2011-08-29
CN102300769B (zh) 2014-07-02
RU2011136956A (ru) 2013-03-20
KR20110137789A (ko) 2011-12-23
KR101430063B1 (ko) 2014-08-13
FR2943616B1 (fr) 2012-07-20
BRPI1009985A2 (pt) 2016-03-15
CN102300769A (zh) 2011-12-28
EP2414219A1 (de) 2012-02-08
MY154121A (en) 2015-05-15

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