EP4139602B1 - Free-standing casing suitable for supporting and thermally insulating a sealed membrane - Google Patents

Free-standing casing suitable for supporting and thermally insulating a sealed membrane Download PDF

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Publication number
EP4139602B1
EP4139602B1 EP21724626.3A EP21724626A EP4139602B1 EP 4139602 B1 EP4139602 B1 EP 4139602B1 EP 21724626 A EP21724626 A EP 21724626A EP 4139602 B1 EP4139602 B1 EP 4139602B1
Authority
EP
European Patent Office
Prior art keywords
groove
case
supporting
tank
cover panel
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
EP21724626.3A
Other languages
German (de)
French (fr)
Other versions
EP4139602A1 (en
Inventor
Mohamed Sassi
Johan Bougault
Moustapha HOUNDJO
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
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Gaztransport et Technigaz SA
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Publication of EP4139602A1 publication Critical patent/EP4139602A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/24—Arrangement of ship-based loading or unloading equipment for cargo or passengers of pipe-lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/30—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures
    • B63B27/34—Arrangement of ship-based loading or unloading equipment for transfer at sea between ships or between ships and off-shore structures using pipe-lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C6/00—Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/16—Shells
    • B63B3/20—Shells of double type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0157—Polygonal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/052—Size large (>1000 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

Definitions

  • the invention relates to the field of sealed and thermally insulating tanks integrated into a supporting structure to contain a fluid, in particular to membrane tanks for containing liquefied gases, in particular combustible gases.
  • the invention also relates to self-supporting wooden boxes suitable for supporting and thermally insulating the membranes of such tanks.
  • LNG liquefied natural gas
  • LPG Liquefied Petroleum Gas
  • the tank may be intended for transporting liquefied gas or for receiving liquefied gas serving as fuel for the propulsion of the floating structure.
  • this self-supporting box is used to create a primary thermally insulating barrier supporting a primary waterproof membrane.
  • the primary waterproof membrane is welded to a weld backing which forms a slip joint with a tack strip stapled into the groove.
  • the longitudinal groove passes through the two boards of the cover panel and the upper part of the underlying load-bearing partition between two rows of staples.
  • a secondary self-supporting body which has a simple grooved cover plate with grooves having a T-shaped section to receive a weld support in the form of a wing folded at right angles.
  • FR-A-2867831 there is no load-bearing partition directly above the groove.
  • WO-A-8909909 the cover plate is attached to an underlying load-bearing partition by screws housed at the bottom of the groove.
  • An aim of the invention is to propose a resistant self-supporting body to be able to be used to create a primary insulating barrier in a tank, capable of being subjected to dynamic pressures and impacts due to the swaying of the cargo.
  • Another aim of the invention is to allow the use of a welding support in the form of a wing folded at right angles also in a primary waterproof membrane, for example with a view to simplifying or standardizing welding procedures. manufacturing and reduce parts inventory.
  • the invention provides a aforementioned self-supporting box, characterized in that the groove has a section comprising, successively in a direction of thickness of the upper plate, a wider bottom part and a narrower mouth part , and that the upper surface of the supporting partition is wider than the bottom part of the groove, the fasteners being engaged in an area of the lower plate offset laterally relative to the bottom part of the groove.
  • the fasteners engaged in the lower plate to attach the supporting partition to the cover panel do not weaken the cover panel. cover directly above the groove. This arrangement therefore makes it possible to reliably fix the supporting partition while presenting increased mechanical resistance of the cover panel compared to a box of the prior art.
  • such a self-supporting body may include one or more of the following arrangements.
  • the groove is provided only in the upper plate of the cover panel.
  • the clips attach the load-bearing partition to the cover panel independently of the top plate.
  • the upper plate of the cover panel is not weakened by the presence of the fasteners.
  • the groove has a T-shaped section, in which the bottom part of the groove corresponds to the horizontal bar of the T and the mouth part corresponds to the vertical bar of the T.
  • the bottom part of the groove has a width of between 20 and 30 mm.
  • a gap between the width of the bottom part of the groove and the width of the upper surface of the supporting partition is greater than 10mm.
  • a median line of the bottom part of the groove is located directly above a median plane of the supporting partition.
  • the fasteners are arranged on either side of a median plane of the supporting partition.
  • the load-bearing partition is made of wood, plywood or composite.
  • the supporting partition has a uniform width wider than the bottom part of the groove.
  • the internal partition has an upper flange arranged parallel against the lower plate and a central portion arranged under the upper flange, the upper flange being wider than the bottom part of the groove, the central portion having a width equal to or narrower than the bottom part of the groove.
  • the load-bearing partition has a multilayer structure in a width direction, the multilayer structure comprising a core of insulating material and two side plates more rigid than the insulating material, the fasteners being engaged in the side plates.
  • the insulating material is selected from polymer foams, in particular polyurethane foam, mineral fibers, in particular glass wool, wadding and expanded polystyrene.
  • two parallel grooves are provided in the cover panel and a respective internal partition extends directly above each groove.
  • the body has the general shape of a rectangular parallelepiped.
  • the invention also provides a waterproof and thermally insulating tank for storing a fluid, said tank comprising a tank wall fixed to a supporting wall, in which the tank wall comprises, in the direction of thickness from the outside towards the inside of said tank, a secondary insulating barrier retained on said supporting wall, a secondary waterproof membrane retained on said secondary insulating barrier, a barrier primary insulating membrane retained on said secondary waterproof membrane and a primary waterproof membrane retained on said primary insulating barrier, characterized in that said primary insulating barrier is essentially made up of the aforementioned boxes, juxtaposed and filled with a heat-insulating lining, the primary waterproof membrane being retained on the cover panels of said boxes by welding supports inserted in said grooves.
  • the fluid is a liquefied gas, such as liquefied natural gas, liquefied petroleum gas, liquefied ethylene.
  • a liquefied gas such as liquefied natural gas, liquefied petroleum gas, liquefied ethylene.
  • Such a tank can be part of a land storage installation, a storage installation placed on a seabed, for example to store LNG or be installed in a floating, coastal or deep water structure, in particular an LNG ship, a floating storage and regasification unit (FSRU), a floating production and offshore storage unit (FPSO) and others.
  • FSRU floating storage and regasification unit
  • FPSO floating production and offshore storage unit
  • a vessel for transporting a fluid comprises a double hull and a aforementioned tank placed in the double hull.
  • the double shell comprises an internal shell forming the supporting wall of the tank.
  • the invention also provides a method of loading or unloading such a vessel, in which a fluid is conveyed through insulated pipes from or to a floating or terrestrial storage installation to or from the tank of the ship.
  • the invention also provides a transfer system for a fluid, the system comprising the aforementioned vessel, insulated pipes arranged so as to connect the tank installed in the hull of the vessel to a floating or land storage installation and a pump for driving fluid through the insulated pipelines to or from the floating or land-based storage facility to or from the vessel tank.
  • the tank wall 1 can be part of a tank having different geometries, for example a polyhedral shape.
  • There [ Fig.1 ] represents the tank wall 1 seen in perspective from above with a cutaway to show the structure of this wall.
  • Such a structure can be implemented on extended surfaces having various orientations, for example to cover the bottom, ceiling and side walls of a polyhedral tank.
  • the orientation of the [ Fig.1 ] is therefore not limiting in this regard.
  • the tank wall 1 is successively composed in its thickness of a secondary insulating barrier 3 which is formed of boxes juxtaposed on the supporting wall 2 and retained thereon by secondary retaining members; then a secondary waterproof membrane 4 carried by secondary insulating barrier 3; then a primary insulating barrier formed of boxes 5 juxtaposed and retained on the secondary waterproof membrane 4 by primary retaining members themselves fixed to the secondary retaining members 4 and, finally, a primary waterproof membrane 6 carried by the boxes 5.
  • Secondary and primary retaining members are for example described in FR-A-2798902 .
  • the primary waterproof membrane 6 may consist of a continuous layer of strakes 10 made of steel with a high nickel content, for example 37%, known under the name of invar, whose expansion coefficient is typically between 1.2.10 - 6 and 2.10 -6 K -1 . He is also possible to use iron and manganese alloys whose expansion coefficient is typically of the order of 7 to 9.10 -6 K -1 .
  • the strakes 10 are welded in a watertight manner by their raised side edges on parallel weld supports 8 retained in the grooves of the cover panels 7 of the boxes 5.
  • the secondary waterproof membrane 4 can be produced identically, as illustrated in [ Fig.1 ], or differently.
  • the number 9 designates a groove for receiving a welding support for the secondary waterproof membrane 4.
  • Box 5 partially visible on the [ Fig.1 ] has an overall parallelepiped shape.
  • There [ Fig.2 ] shows a plane side view according to arrow II of [ Fig.1 ].
  • the upper 21 and lower 22 plates are fixed together for example at the periphery of the supporting partitions 26, 126 or 226 and directly above the secondary partitions 25 while securing the upper 21 and lower 22 plates with the secondary partitions 25.
  • the bottom panel 23 and the cover panel 7 have a rectangular outline and are spaced from each other by two longitudinal end sails 27 and two lateral end sails 24 together forming the contour of the interior space of the body 5.
  • This interior space is compartmentalized by two load-bearing partitions 26 located directly above the grooves 30 and possibly secondary partitions 25 which may be narrower than the load-bearing partitions 26.
  • the load-bearing partitions 26 and secondary partitions 25 extend longitudinally perpendicular to the two longitudinal end sails 27 and parallel to the two lateral end sails 24. All these elements are fixed as much as necessary by stapling, screwing and/or gluing.
  • the secondary partitions 25 have a width of 12 mm and the longitudinal end sails 27 and lateral ends 24 have a width of between 12 and 24 mm.
  • the compartments are filled with a heat-insulating lining, for example in a material chosen from expanded perlite, aerogel materials in a particulate or fibrous form, expanded polystyrene, wool glass, cellulose wadding, low density polymer foams, for example polyethylene, polyurethane or others.
  • a heat-insulating lining for example in a material chosen from expanded perlite, aerogel materials in a particulate or fibrous form, expanded polystyrene, wool glass, cellulose wadding, low density polymer foams, for example polyethylene, polyurethane or others.
  • the dimensions of the box 5 can of course be different from the example shown in [ Fig.2 ].
  • the body 5 In its width, the body 5 has a single load-bearing partition 26 and a single groove 30 or, on the contrary, a greater number of load-bearing partitions 26 and grooves 30 than two.
  • the groove 30 has a section in the shape of an inverted T, comprising a horizontal and wide bottom part 32 and a vertical and narrow mouth part 31, in order to receive a weld wing bent at an angle straight, according to known technique.
  • the bottom part 32 could extend on only one side of the mouth part, so that the groove has an L-shaped section.
  • the supporting partition 26 is a plywood plate which has a width W greater than the width of the bottom part 32.
  • This extra width makes it possible to place rows of staples 35 offset laterally relative to the bottom part 32. , that is to say outside the area located directly above the groove 30, to fix the supporting partition 26 to the lower plate 22.
  • This arrangement makes it possible to preserve the rigidity of the cover panel 7 despite the relatively high width of the groove 30, the bottom part 32 of which is for example 24mm wide. Indeed, even if the clips 35 can locally reduce the rigidity of the lower plate 22 of the cover panel, this weakening does not occur at the same place as the thinning resulting from the groove 30.
  • the extra width of the load-bearing partition 26 is greater than 10mm.
  • the width W is 36 mm or more and preferably 42 mm.
  • FIG.4 shows another embodiment of the supporting partition 126, which has a multilayer structure in the direction of its width, with a core 41 of insulating material and two side plates 42 more rigid than the insulating material on either side of the core 41.
  • the fasteners 35 are engaged in the side plates 42, which are for example made of plywood.
  • This construction makes it possible to limit the weight and the thermal bridge in relation to the supporting partition 26.
  • the side plates 42 have a width of 12 mm.
  • FIG.5 shows another embodiment of the supporting partition 226, which presents, successively in the thickness direction of the body 5, an upper flange 52 arranged parallel against the lower plate 22 and a central portion 51 arranged under the upper flange 52
  • the upper sole 52 has the width W greater than the width of the bottom part 32.
  • the central portion 51 can be equal to or narrower than the bottom part 32 of the groove 30.
  • the upper sole 52 and the. central portion 51 are for example made of plywood. This construction makes it possible to limit the weight and the thermal bridge in relation to the supporting partition 26.
  • the central portion 51 has a width of between 18 and 30 mm, preferably 24 mm.
  • the upper sole 52 has a width greater than 24 mm, for example 42 mm, 50 mm or 60 mm.
  • the upper flange 52 may have a width equal to the spacing between the supporting partition 226 and a secondary partition adjacent to the supporting partition 226 or less than this spacing. In one embodiment, the supporting partitions 226 and any secondary partitions 25 are distributed in a uniform spacing pitch and the upper flange 52 can have a width equal to the uniform spacing pitch or smaller than this.
  • composite materials can be used to make all or part of the self-supporting box.
  • suitable composite materials are taught in WO-A-2015079135 .
  • a primary insulating barrier can be constructed with the boxes 5 described above in its entirety or only in certain parts of the tank.
  • the boxes 5 described above can be used near the edges of the tank while other insulating blocks are used in other portions of the tank walls.
  • Such an arrangement is described for example in WO-A-2019077253 .
  • a cutaway view of an LNG ship 70 shows a watertight and insulated tank 71 of generally prismatic shape mounted in the double hull 72 of the ship.
  • the wall of the tank 71 comprises a primary waterproof barrier intended to be in contact with the liquefied gas contained in the tank, a secondary waterproof barrier arranged between the primary waterproof barrier and the double hull 72 of the ship, and two insulating barriers arranged respectively between the primary waterproof barrier and the secondary waterproof barrier and between the secondary waterproof barrier and the double hull 72.
  • the ship comprises a simple shell.
  • loading/unloading pipes 73 arranged on the upper deck of the ship can be connected, by means of appropriate connectors, to a maritime or port terminal to transfer a cargo of liquefied gas from or to the tank 71.
  • FIG.6 represents an example of a maritime terminal comprising a loading and unloading station 75, an underwater pipe 76 and an onshore installation 77.
  • the loading and unloading station 75 is a fixed offshore installation comprising a movable arm 74 and a tower 78 which supports the mobile arm 74.
  • the mobile arm 74 carries a bundle of insulated flexible pipes 79 which can connect to the loading/unloading pipes 73.
  • the adjustable mobile arm 74 adapts to all LNG carrier templates.
  • a connection pipe not shown extends inside the tower 78.
  • the loading and unloading station 75 allows the loading and unloading of the LNG tanker 70 from or to the onshore installation 77.
  • the underwater pipe 76 allows the transfer of the liquefied gas between the loading or unloading station 75 and the onshore installation 77 over a long distance, for example 5 km, which makes it possible to keep the LNG ship 70 at a long distance from the coast during loading and unloading operations.
  • pumps on board the ship 70 and/or pumps fitted to the on-shore installation 77 and/or pumps fitted to the loading and unloading station 75 are used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Description

Domaine techniqueTechnical area

L'invention se rapporte au domaine des cuves étanches et thermiquement isolantes intégrées dans une structure porteuse pour contenir un fluide, notamment aux cuves à membrane pour contenir des gaz liquéfiés, en particulier des gaz combustibles. En particulier l'invention se rapporte aussi à des caisses autoporteuses en bois convenant pour le soutien et l'isolation thermique des membranes de telles cuves.The invention relates to the field of sealed and thermally insulating tanks integrated into a supporting structure to contain a fluid, in particular to membrane tanks for containing liquefied gases, in particular combustible gases. In particular, the invention also relates to self-supporting wooden boxes suitable for supporting and thermally insulating the membranes of such tanks.

Des cuves étanches et thermiquement isolantes peuvent être utilisées dans différentes industries pour stocker des fluides. Par exemple, dans le domaine de l'énergie, le gaz naturel liquéfié (GNL) est un liquide à forte teneur en méthane qui peut être stocké à pression atmosphérique à environ -163°C dans des cuves de stockage terrestres ou dans des cuves embarquées dans des structures flottantes. Le Gaz de Pétrole Liquéfié (GPL) peut être stocké à une température comprise entre -50°C et 0°C.Waterproof and thermally insulating tanks can be used in different industries to store fluids. For example, in the energy sector, liquefied natural gas (LNG) is a liquid with a high methane content that can be stored at atmospheric pressure at around -163°C in land-based storage tanks or in on-board tanks. in floating structures. Liquefied Petroleum Gas (LPG) can be stored at a temperature between -50°C and 0°C.

Dans le cas d'un ouvrage flottant, la cuve peut être destinée au transport du gaz liquéfié ou à recevoir du gaz liquéfié servant de carburant pour la propulsion de l'ouvrage flottant.In the case of a floating structure, the tank may be intended for transporting liquefied gas or for receiving liquefied gas serving as fuel for the propulsion of the floating structure.

Technique antérieurePrior art

On connaît, par exemple dans FR-A-2867831 , une caisse autoporteuse en bois convenant pour le soutien et l'isolation thermique d'une membrane étanche destinée à contenir un fluide, la caisse comportant :

  • un panneau de fond,
  • des voiles latéraux fixés au panneau de fond et faisant saillie perpendiculairement d'un côté du panneau de fond pour délimiter le contour d'un espace intérieur de la caisse,
  • un panneau de couvercle supporté et fixé sur un bord supérieur des voiles latéraux parallèlement au panneau de fond et à distance du panneau de fond pour fermer l'espace intérieur de la caisse, le panneau de couvercle comportant une plaque supérieure et une plaque inférieure superposées et fixées l'une à l'autre,
  • au moins une rainure ménagée dans le panneau de couvercle et débouchant sur une surface supérieure du panneau de couvercle pour recevoir un support de soudure destiné à retenir une membrane étanche sur le panneau de couvercle,
  • au moins une cloison porteuse s'étendant longitudinalement à l'aplomb de la ou chaque rainure parallèlement à la rainure, la cloison porteuse étant agencée perpendiculairement au panneau de fond et au panneau de couvercle, la cloison porteuse s'étendant entre lesdits voiles latéraux de manière à diviser l'espace intérieur en une pluralité de compartiments destinés à recevoir une garniture calorifuge, la cloison porteuse présentant une surface supérieure en contact avec la plaque inférieure du panneau de couvercle et une surface inférieure en contact avec le panneau de fond, et des attaches engagées perpendiculairement dans la plaque inférieure et la surface supérieure de la cloison porteuse pour attacher la cloison porteuse au panneau de couvercle.
We know, for example in FR-A-2867831 , a self-supporting wooden box suitable for supporting and thermal insulation of a waterproof membrane intended to contain a fluid, the box comprising:
  • a background panel,
  • side sails fixed to the bottom panel and projecting perpendicularly from one side of the bottom panel to delimit the contour of an interior space of the body,
  • a cover panel supported and fixed on an upper edge of the side sails parallel to the bottom panel and at a distance from the bottom panel to close the interior space of the body, the cover panel comprising an upper plate and a lower plate superimposed and fixed to each other,
  • at least one groove provided in the cover panel and opening onto an upper surface of the cover panel to receive a welding support intended to retain a waterproof membrane on the cover panel,
  • at least one load-bearing partition extending longitudinally directly above the or each groove parallel to the groove, the load-bearing partition being arranged perpendicular to the bottom panel and the cover panel, the load-bearing partition extending between said side walls so as to divide the interior space into a plurality of compartments intended to receive a heat-insulating lining, the supporting partition having an upper surface in contact with the lower plate of the cover panel and a lower surface in contact with the bottom panel, and clips engaged perpendicularly in the bottom plate and the upper surface of the supporting partition to attach the supporting partition to the cover panel.

Dans FR-A-2867831 cette caisse autoporteuse est utilisée pour réaliser une barrière thermiquement isolante primaire supportant une membrane étanche primaire. La membrane étanche primaire est soudée à un support de soudure qui forme un joint glissant avec une bande d'accrochage agrafée dans la rainure. Pour cela, la rainure longitudinale traverse les deux planches du panneau de couvercle et la partie supérieure de la cloison porteuse sous-jacente entre deux rangées d'agrafes.In FR-A-2867831 this self-supporting box is used to create a primary thermally insulating barrier supporting a primary waterproof membrane. The primary waterproof membrane is welded to a weld backing which forms a slip joint with a tack strip stapled into the groove. To do this, the longitudinal groove passes through the two boards of the cover panel and the upper part of the underlying load-bearing partition between two rows of staples.

Il est aussi connu, par exemple dans FR-A-2867831 ou WO-A-8909909 , d'utiliser une caisse autoporteuse secondaire qui comporte une simple plaque de couvercle rainurée avec des rainures présentant une section en forme de T pour recevoir un support de soudure sous la forme d'une aile pliée à angle droit. Dans FR-A-2867831 , il n'y a pas de cloison porteuse à l'aplomb de la rainure. Dans WO-A-8909909 , la plaque de couvercle est fixée à une cloison porteuse sous-jacente par des vis logées au fond de la rainure.It is also known, for example in FR-A-2867831 Or WO-A-8909909 , to use a secondary self-supporting body which has a simple grooved cover plate with grooves having a T-shaped section to receive a weld support in the form of a wing folded at right angles. In FR-A-2867831 , there is no load-bearing partition directly above the groove. In WO-A-8909909 , the cover plate is attached to an underlying load-bearing partition by screws housed at the bottom of the groove.

Résumé de l'inventionSummary of the invention

Un but de l'invention est de proposer une caisse autoporteuse résistante pour pouvoir servir à réaliser une barrière isolante primaire dans une cuve, susceptible d'être soumise à des pressions dynamiques et des impacts du fait du ballotement de la cargaison. Un autre but de l'invention est de permettre l'utilisation d'un support de soudure sous la forme d'une aile pliée à angle droit également dans une membrane étanche primaire, par exemple en vue de simplifier ou d'uniformiser des procédures de fabrication et de réduire un inventaire de pièces.An aim of the invention is to propose a resistant self-supporting body to be able to be used to create a primary insulating barrier in a tank, capable of being subjected to dynamic pressures and impacts due to the swaying of the cargo. Another aim of the invention is to allow the use of a welding support in the form of a wing folded at right angles also in a primary waterproof membrane, for example with a view to simplifying or standardizing welding procedures. manufacturing and reduce parts inventory.

Pour cela, l'invention fournit une caisse autoporteuse précitée, caractérisée par le fait que la rainure présente une section comportant, successivement dans une direction d'épaisseur de la plaque supérieure, une partie de fond plus large et une partie d'embouchure plus étroite,
et que la surface supérieure de la cloison porteuse est plus large que la partie de fond de la rainure, les attaches étant engagées dans une zone de la plaque inférieure décalée latéralement par rapport à la partie de fond de la rainure.For this, the invention provides a aforementioned self-supporting box, characterized in that the groove has a section comprising, successively in a direction of thickness of the upper plate, a wider bottom part and a narrower mouth part ,
and that the upper surface of the supporting partition is wider than the bottom part of the groove, the fasteners being engaged in an area of the lower plate offset laterally relative to the bottom part of the groove.

Grâce à ces caractéristiques, les attaches engagées dans la plaque inférieure pour attacher la cloison porteuse au panneau de couvercle ne fragilisent pas le panneau de couvercle à l'aplomb de la rainure. Cette disposition permet donc de fixer de manière fiable la cloison porteuse tout en présentant une résistance mécanique du panneau de couvercle augmentée par rapport à un caisson de l'art antérieur.Thanks to these characteristics, the fasteners engaged in the lower plate to attach the supporting partition to the cover panel do not weaken the cover panel. cover directly above the groove. This arrangement therefore makes it possible to reliably fix the supporting partition while presenting increased mechanical resistance of the cover panel compared to a box of the prior art.

Selon des modes de réalisation, une telle caisse autoporteuse peut comporter une ou plusieurs des dispositions suivantes.According to embodiments, such a self-supporting body may include one or more of the following arrangements.

De préférence, la rainure est ménagée seulement dans la plaque supérieure du panneau de couvercle.Preferably, the groove is provided only in the upper plate of the cover panel.

De préférence, les attaches attachent la cloison porteuse au panneau de couvercle indépendamment de la plaque supérieure. Ainsi, la plaque supérieure du panneau de couvercle n'est pas fragilisée par la présence des attaches.Preferably, the clips attach the load-bearing partition to the cover panel independently of the top plate. Thus, the upper plate of the cover panel is not weakened by the presence of the fasteners.

Selon un mode de réalisation, la rainure présente une section en forme de T, dans laquelle la partie de fond de la rainure correspond à la barre horizontale du T et la partie d'embouchure correspond à la barre verticale du T.According to one embodiment, the groove has a T-shaped section, in which the bottom part of the groove corresponds to the horizontal bar of the T and the mouth part corresponds to the vertical bar of the T.

Selon un mode de réalisation, la partie de fond de la rainure présente une largeur comprise entre 20 et 30 mm.According to one embodiment, the bottom part of the groove has a width of between 20 and 30 mm.

Selon un mode de réalisation, un écart entre la largeur de la partie de fond de la rainure et la largeur de la surface supérieure de la cloison porteuse est supérieur à 10mm.According to one embodiment, a gap between the width of the bottom part of the groove and the width of the upper surface of the supporting partition is greater than 10mm.

Selon un mode de réalisation, une ligne médiane de la partie de fond de la rainure est située à l'aplomb d'un plan médian de la cloison porteuse.According to one embodiment, a median line of the bottom part of the groove is located directly above a median plane of the supporting partition.

Selon un mode de réalisation, les attaches sont disposées de part et d'autres d'un plan médian de la cloison porteuse.According to one embodiment, the fasteners are arranged on either side of a median plane of the supporting partition.

Selon un mode de réalisation, la cloison porteuse est en bois, en bois de contreplaqué ou en composite.According to one embodiment, the load-bearing partition is made of wood, plywood or composite.

Selon un mode de réalisation, la cloison porteuse présente une largeur uniforme plus large que la partie de fond de la rainure.According to one embodiment, the supporting partition has a uniform width wider than the bottom part of the groove.

Selon un autre mode de réalisation, la cloison interne présente une semelle supérieure disposée parallèlement contre la plaque inférieure et une portion centrale disposée sous la semelle supérieure, la semelle supérieure étant plus large que la partie de fond de la rainure, la portion centrale présentant une largeur égale ou plus étroite que la partie de fond de la rainure.According to another embodiment, the internal partition has an upper flange arranged parallel against the lower plate and a central portion arranged under the upper flange, the upper flange being wider than the bottom part of the groove, the central portion having a width equal to or narrower than the bottom part of the groove.

Selon un mode de réalisation, la cloison porteuse présente une structure multicouche dans une direction de largeur, la structure multicouche comportant un noyau en matière isolante et deux plaques latérales plus rigides que la matière isolante, les attaches étant engagées dans les plaques latérales. Par exemple, la matière isolante est sélectionné parmi les mousses polymères, notamment mousse de polyuréthane, les fibres minérales, notamment laine de verre, l'ouate et le polystyrène expansé.According to one embodiment, the load-bearing partition has a multilayer structure in a width direction, the multilayer structure comprising a core of insulating material and two side plates more rigid than the insulating material, the fasteners being engaged in the side plates. For example, the insulating material is selected from polymer foams, in particular polyurethane foam, mineral fibers, in particular glass wool, wadding and expanded polystyrene.

Selon un mode de réalisation, deux rainures parallèles sont ménagées dans le panneau de couvercle et une cloison interne respective s'étend à l'aplomb de chaque rainure.According to one embodiment, two parallel grooves are provided in the cover panel and a respective internal partition extends directly above each groove.

Selon un mode de réalisation, la caisse présente une forme générale de parallélépipède rectangle.According to one embodiment, the body has the general shape of a rectangular parallelepiped.

Selon un mode de réalisation, l'invention fournit aussi une cuve étanche et thermiquement isolante de stockage d'un fluide, ladite cuve comportant une paroi de cuve fixée sur une paroi porteuse,
dans laquelle la paroi de cuve comporte, dans le sens de l'épaisseur depuis l'extérieur vers l'intérieur de ladite cuve, une barrière isolante secondaire retenue sur ladite paroi porteuse, une membrane étanche secondaire retenue sur ladite barrière isolante secondaire, une barrière isolante primaire retenue sur ladite membrane étanche secondaire et une membrane étanche primaire retenue sur ladite barrière isolante primaire, caractérisée par le fait que ladite barrière isolante primaire est essentiellement constituée de caisses précitées, juxtaposées et remplies d'une garniture calorifuge, la membrane étanche primaire étant retenue sur les panneaux de couvercle desdites caisses par des supports de soudure insérés dans lesdites rainures.According to one embodiment, the invention also provides a waterproof and thermally insulating tank for storing a fluid, said tank comprising a tank wall fixed to a supporting wall,
in which the tank wall comprises, in the direction of thickness from the outside towards the inside of said tank, a secondary insulating barrier retained on said supporting wall, a secondary waterproof membrane retained on said secondary insulating barrier, a barrier primary insulating membrane retained on said secondary waterproof membrane and a primary waterproof membrane retained on said primary insulating barrier, characterized in that said primary insulating barrier is essentially made up of the aforementioned boxes, juxtaposed and filled with a heat-insulating lining, the primary waterproof membrane being retained on the cover panels of said boxes by welding supports inserted in said grooves.

Selon un mode de réalisation, le fluide est un gaz liquéfié, tel que du gaz naturel liquéfié, du gaz de pétrole liquéfié, de l'éthylène liquéfié.According to one embodiment, the fluid is a liquefied gas, such as liquefied natural gas, liquefied petroleum gas, liquefied ethylene.

Une telle cuve peut faire partie d'une installation de stockage terrestre, une installation de stockage posée sur un fond marin, par exemple pour stocker du GNL ou être installée dans une structure flottante, côtière ou en eau profonde, notamment un navire méthanier, une unité flottante de stockage et de regazéification (FSRU), une unité flottante de production et de stockage déporté (FPSO) et autres.Such a tank can be part of a land storage installation, a storage installation placed on a seabed, for example to store LNG or be installed in a floating, coastal or deep water structure, in particular an LNG ship, a floating storage and regasification unit (FSRU), a floating production and offshore storage unit (FPSO) and others.

Selon un mode de réalisation, un navire pour le transport d'un fluide comporte une double coque et une cuve précitée disposée dans la double coque. Selon un mode de réalisation, la double coque comporte une coque interne formant la paroi porteuse de la cuve.According to one embodiment, a vessel for transporting a fluid comprises a double hull and a aforementioned tank placed in the double hull. According to one embodiment, the double shell comprises an internal shell forming the supporting wall of the tank.

Selon un mode de réalisation, l'invention fournit aussi un procédé de chargement ou déchargement d'un tel navire, dans lequel on achemine un fluide à travers des canalisations isolées depuis ou vers une installation de stockage flottante ou terrestre vers ou depuis la cuve du navire.According to one embodiment, the invention also provides a method of loading or unloading such a vessel, in which a fluid is conveyed through insulated pipes from or to a floating or terrestrial storage installation to or from the tank of the ship.

Selon un mode de réalisation, l'invention fournit aussi un système de transfert pour un fluide, le système comportant le navire précité, des canalisations isolées agencées de manière à relier la cuve installée dans la coque du navire à une installation de stockage flottante ou terrestre et une pompe pour entrainer un fluide à travers les canalisations isolées depuis ou vers l'installation de stockage flottante ou terrestre vers ou depuis la cuve du navire.According to one embodiment, the invention also provides a transfer system for a fluid, the system comprising the aforementioned vessel, insulated pipes arranged so as to connect the tank installed in the hull of the vessel to a floating or land storage installation and a pump for driving fluid through the insulated pipelines to or from the floating or land-based storage facility to or from the vessel tank.

Brève description des dessinsBrief description of the drawings

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description suivante de plusieurs modes de réalisation particuliers de l'invention, donnés uniquement à titre illustratif et non limitatif, en référence aux dessins annexés.

  • La [Fig.1] est une vue en perspective écorchée d'une paroi de cuve étanche et thermiquement isolante dans laquelle des caisses autoporteuses peuvent être utilisées.
  • La [Fig.2] est une vue de côté d'une caisse autoporteuse convenant pour une barrière isolante primaire de la paroi d cuve de la [Fig.1].
  • [Fig.3][Fig.4][Fig.5] Les figures 3 à 5 sont des vues agrandies d'une zone III de la [Fig.2] illustrant trois modes de réalisation d'une cloison porteuse.
  • La [Fig.6] est une représentation schématique écorchée d'une cuve de navire méthanier et d'un terminal de chargement/déchargement de cette cuve.
The invention will be better understood, and other aims, details, characteristics and advantages thereof will appear more clearly during the following description of several particular embodiments of the invention, given solely by way of illustration and not limitation. , with reference to the attached drawings.
  • There [ Fig.1 ] is a cutaway perspective view of a watertight and thermally insulating tank wall in which self-supporting boxes can be used.
  • There [ Fig.2 ] is a side view of a self-supporting box suitable for a primary insulating barrier of the tank wall of the [ Fig.1 ].
  • [ Fig.3][Fig.4 ][ Fig.5 ] THE figures 3 to 5 are enlarged views of zone III of the [ Fig.2 ] illustrating three embodiments of a load-bearing partition.
  • There [ Fig.6 ] is a stripped-down schematic representation of an LNG ship tank and a loading/unloading terminal for this tank.

Description des modes de réalisationDescription of embodiments

La structure générale d'une paroi de cuve 1, étanche et thermiquement isolante, intégrée et ancrée à une paroi porteuse 2, est illustrée sur la [Fig.1].La paroi de cuve 1 peut faire partie d'une cuve ayant différentes géométries, par exemple une forme polyédrique. La [Fig.1] représente la paroi de cuve 1 vue en perspective de dessus avec un écorchement pour montrer la structure de cette paroi. Une telle structure peut être mise en oeuvre sur des surfaces étendues ayant diverses orientations, par exemple pour recouvrir des parois de fond, de plafond et de côté d'une cuve polyédrique. L'orientation de la [Fig.1] n'est donc pas limitative à cet égard. Par convention, on appellera « au-dessus » une position située plus près de l'intérieur du réservoir et « en dessous » une position située plus près de la paroi porteuse 2, quelle que soit l'orientation de la paroi de cuve par rapport au champ de gravité terrestre.The general structure of a tank wall 1, waterproof and thermally insulating, integrated and anchored to a supporting wall 2, is illustrated in [ Fig.1 ].The tank wall 1 can be part of a tank having different geometries, for example a polyhedral shape. There [ Fig.1 ] represents the tank wall 1 seen in perspective from above with a cutaway to show the structure of this wall. Such a structure can be implemented on extended surfaces having various orientations, for example to cover the bottom, ceiling and side walls of a polyhedral tank. The orientation of the [ Fig.1 ] is therefore not limiting in this regard. By convention, we will call "above" a position located closer to the interior of the tank and "below" a position located closer to the supporting wall 2, whatever the orientation of the tank wall in relation to to the Earth's gravity field.

La paroi de cuve 1 est composée successivement dans son épaisseur d'une barrière isolante secondaire 3 qui est formée de caisses juxtaposées sur la paroi porteuse 2 et retenues sur celle-ci par des organes de retenue secondaires; puis d'une membrane étanche secondaire 4 portée par barrière isolante secondaire 3; puis d'une barrière isolante primaire formée de caisses 5 juxtaposées et retenues sur la membrane étanche secondaire 4 par des organes de retenue primaires eux-mêmes fixés aux organes de retenue secondaires 4 et, enfin, d'une membrane étanche primaire 6 portée par les caisses 5. Des organes de retenue secondaires et primaires sont par exemple décrit dans FR-A-2798902 .The tank wall 1 is successively composed in its thickness of a secondary insulating barrier 3 which is formed of boxes juxtaposed on the supporting wall 2 and retained thereon by secondary retaining members; then a secondary waterproof membrane 4 carried by secondary insulating barrier 3; then a primary insulating barrier formed of boxes 5 juxtaposed and retained on the secondary waterproof membrane 4 by primary retaining members themselves fixed to the secondary retaining members 4 and, finally, a primary waterproof membrane 6 carried by the boxes 5. Secondary and primary retaining members are for example described in FR-A-2798902 .

La membrane étanche primaire 6 peut être constituée d'une nappe continue de virures 10 en acier à haute teneur en nickel, par exemple 37%, connu sous le nom d'invar, dont le coefficient de dilatation est typiquement compris entre 1,2.10-6 et 2.10-6 K-1. Il est aussi possible d'utiliser des alliages de fer et de manganèse dont le coefficient de dilatation est typiquement de l'ordre de 7 à 9.10-6 K-1. Les virures 10 sont soudées de manière étanche par leurs bords latéraux relevés sur des supports de soudures 8 parallèles retenus dans des rainures des panneaux de couvercle 7 des caisses 5. La membrane étanche secondaire 4 peut être réalisée identiquement, comme illustré sur la [Fig.1], ou différemment. Le chiffre 9 désigne une rainure pour recevoir un support de soudure de la membrane étanche secondaire 4.The primary waterproof membrane 6 may consist of a continuous layer of strakes 10 made of steel with a high nickel content, for example 37%, known under the name of invar, whose expansion coefficient is typically between 1.2.10 - 6 and 2.10 -6 K -1 . He is It is also possible to use iron and manganese alloys whose expansion coefficient is typically of the order of 7 to 9.10 -6 K -1 . The strakes 10 are welded in a watertight manner by their raised side edges on parallel weld supports 8 retained in the grooves of the cover panels 7 of the boxes 5. The secondary waterproof membrane 4 can be produced identically, as illustrated in [ Fig.1 ], or differently. The number 9 designates a groove for receiving a welding support for the secondary waterproof membrane 4.

La caisse 5 partiellement visible sur la [Fig.1] présente une forme globale parallélépipédique. La [Fig.2] en montre une vue plane de côté selon la flèche II de la [Fig.1].Box 5 partially visible on the [ Fig.1 ] has an overall parallelepiped shape. There [ Fig.2 ] shows a plane side view according to arrow II of [ Fig.1 ].

En référence à la [Fig.2], une plaque inférieure 22 et une plaque supérieure 21 fixées rigidement l'une à l'autre, par exemple par vissage, collage et/ou agrafage, constituent ensemble la plaque de couvercle. La fixation des plaques supérieure 21 et inférieure 22 entre elles est réalisée par exemple en périphérie des cloisons porteuses 26, 126 ou 226 et à l'aplomb des cloisons secondaires 25 tout en solidarisant les plaques supérieure 21 et inférieure 22 avec les cloisons secondaires 25. Le panneau de fond 23 et le panneau de couvercle 7 présentent un contour rectangulaire et sont espacées l'une de l'autre par deux voiles d'extrémités longitudinales 27 et deux voiles d'extrémités latérales 24 formant ensemble le contour de l'espace intérieur de la caisse 5. Cet espace intérieur est compartimenté par deux cloisons porteuses 26 situées à l'aplomb des rainures 30 et éventuellement des cloisons secondaires 25 pouvant être plus étroites que les cloisons porteuses 26. Les cloisons porteuses 26 et cloisons secondaires 25 s'étendent longitudinalement perpendiculairement aux deux voiles d'extrémités longitudinales 27 et parallèlement aux deux voiles d'extrémités latérales 24. Tous ces éléments sont fixés autant que nécessaire par agrafage, vissage et/ou collage. A titre d'exemple, les cloisons secondaires 25 ont une largeur de 12 mm et les voiles d'extrémités longitudinales 27 et latérales 24 ont une largeur comprise entre 12 et 24 mm.With reference to the [ Fig.2 ], a lower plate 22 and an upper plate 21 rigidly fixed to each other, for example by screwing, gluing and/or stapling, together constitute the cover plate. The upper 21 and lower 22 plates are fixed together for example at the periphery of the supporting partitions 26, 126 or 226 and directly above the secondary partitions 25 while securing the upper 21 and lower 22 plates with the secondary partitions 25. The bottom panel 23 and the cover panel 7 have a rectangular outline and are spaced from each other by two longitudinal end sails 27 and two lateral end sails 24 together forming the contour of the interior space of the body 5. This interior space is compartmentalized by two load-bearing partitions 26 located directly above the grooves 30 and possibly secondary partitions 25 which may be narrower than the load-bearing partitions 26. The load-bearing partitions 26 and secondary partitions 25 extend longitudinally perpendicular to the two longitudinal end sails 27 and parallel to the two lateral end sails 24. All these elements are fixed as much as necessary by stapling, screwing and/or gluing. For example, the secondary partitions 25 have a width of 12 mm and the longitudinal end sails 27 and lateral ends 24 have a width of between 12 and 24 mm.

Pour réaliser la fonction d'isolation thermique de la caisse 5, les compartiments sont remplis d'une garniture calorifuge, par exemple dans un matériau choisi parmi la perlite expansée, les matériaux aérogels sous une forme particulaire ou fibreuse, le polystyrène expansé, la laine de verre, l'ouate de cellulose, les mousses polymères à basse densité, par exemple en polyéthylène, polyuréthane ou autres.To achieve the thermal insulation function of the box 5, the compartments are filled with a heat-insulating lining, for example in a material chosen from expanded perlite, aerogel materials in a particulate or fibrous form, expanded polystyrene, wool glass, cellulose wadding, low density polymer foams, for example polyethylene, polyurethane or others.

Les dimensions de la caisse 5 peuvent bien sûr être différentes de l'exemple représenté sur la [Fig.2]. Dans sa largeur, la caisse 5 présenter une seule cloison porteuse 26 et une seule rainure 30 ou au contraire un nombre de cloisons porteuses 26 et de rainures 30 plus élevé que deux.The dimensions of the box 5 can of course be different from the example shown in [ Fig.2 ]. In its width, the body 5 has a single load-bearing partition 26 and a single groove 30 or, on the contrary, a greater number of load-bearing partitions 26 and grooves 30 than two.

Comme mieux visible sur la [Fig.3], la rainure 30 présente une section en forme de T renversé, comportant une partie de fond 32 horizontale et large et une partie d'embouchure 31 verticale et étroite, afin de recevoir une aile de soudure pliée à angle droit, selon la technique connue. Alternativement, la partie de fond 32 pourrait s'étendre d'un seul côté de la partie d'embouche, de sorte que la rainure présente une section en forme de L.As better visible on the [ Fig.3 ], the groove 30 has a section in the shape of an inverted T, comprising a horizontal and wide bottom part 32 and a vertical and narrow mouth part 31, in order to receive a weld wing bent at an angle straight, according to known technique. Alternatively, the bottom part 32 could extend on only one side of the mouth part, so that the groove has an L-shaped section.

La cloison porteuse 26 est une plaque de bois contreplaqué qui présente une largeur W plus grande que la largeur de la partie de fond 32. Cette sur-largeur permet de placer des rangées d'agrafes 35 décalées latéralement par rapport à la partie de fond 32, c'est-à-dire en dehors de la zone située directement à l'aplomb de la rainure 30, pour fixer la cloison porteuse 26 à la plaque inférieure 22. Cette disposition permet de préserver la rigidité du panneau de couvercle 7 malgré la largeur relativement élevée de la rainure 30, dont la partie de fond 32 fait par exemple 24mm de large. En effet, même si les agrafes 35 peuvent localement réduire la rigidité de plaque inférieure 22 du panneau de couvercle, cet affaiblissement ne se produit pas au même endroit que l'amincissement résultant de la rainure 30. De préférence, la sur-largeur de la cloison porteuse 26 est supérieure à 10mm. Par exemple la largeur W fait 36 mm ou plus et de préférence 42 mm.The supporting partition 26 is a plywood plate which has a width W greater than the width of the bottom part 32. This extra width makes it possible to place rows of staples 35 offset laterally relative to the bottom part 32. , that is to say outside the area located directly above the groove 30, to fix the supporting partition 26 to the lower plate 22. This arrangement makes it possible to preserve the rigidity of the cover panel 7 despite the relatively high width of the groove 30, the bottom part 32 of which is for example 24mm wide. Indeed, even if the clips 35 can locally reduce the rigidity of the lower plate 22 of the cover panel, this weakening does not occur at the same place as the thinning resulting from the groove 30. Preferably, the extra width of the load-bearing partition 26 is greater than 10mm. For example, the width W is 36 mm or more and preferably 42 mm.

Sur la [Fig.3], la rigidité du panneau de couvercle 7 est encore améliorée par les mesures suivantes :

  • la rainure 30 est ménagée seulement dans la plaque supérieure 21 du panneau de couvercle. Ainsi, la rainure 30 n'affecte pas la rigidité de la plaque inférieure 22.
  • les attaches 35 n'affectent pas la rigidité de la plaque supérieure 21.
  • la cloison porteuse 26 est centrée sous la rainure 30 et symétrique par rapport à un plan médian.
  • les attaches 35 sont disposées de part et d'autres du plan médian de la cloison porteuse.
On the [ Fig.3 ], the rigidity of the cover panel 7 is further improved by the following measures:
  • the groove 30 is provided only in the upper plate 21 of the cover panel. Thus, the groove 30 does not affect the rigidity of the lower plate 22.
  • the fasteners 35 do not affect the rigidity of the upper plate 21.
  • the supporting partition 26 is centered under the groove 30 and symmetrical with respect to a median plane.
  • the fasteners 35 are arranged on either side of the median plane of the supporting partition.

La [Fig.4] montre un autre mode de réalisation de la cloison porteuse 126, qui présente une structure multicouche dans la direction de sa largeur, avec un noyau 41 en matière isolante et deux plaques latérales 42 plus rigides que la matière isolante de part et d'autre du noyau 41. Les attaches 35 sont engagées dans les plaques latérales 42, qui sont par exemple en bois contreplaqué. Cette construction permet de limiter le poids et le pont thermique par rapport à la cloison porteuse 26. A titre d'exemple, les plaques latérales 42 ont une largeur de 12 mm.There [ Fig.4 ] shows another embodiment of the supporting partition 126, which has a multilayer structure in the direction of its width, with a core 41 of insulating material and two side plates 42 more rigid than the insulating material on either side of the core 41. The fasteners 35 are engaged in the side plates 42, which are for example made of plywood. This construction makes it possible to limit the weight and the thermal bridge in relation to the supporting partition 26. For example, the side plates 42 have a width of 12 mm.

La [Fig.5] montre un autre mode de réalisation de la cloison porteuse 226, qui présente, successivement dans la direction d'épaisseur de la caisse 5, une semelle supérieure 52 disposée parallèlement contre la plaque inférieure 22 et une portion centrale 51 disposée sous la semelle supérieure 52. La semelle supérieure 52 présente la largeur W plus grande que la largeur de la partie de fond 32. Inversement, la portion centrale 51 peut être égale ou plus étroite que la partie de fond 32 de la rainure 30. La semelle supérieure 52 et la portion centrale 51 sont par exemple en bois contreplaqué. Cette construction permet de limiter le poids et le pont thermique par rapport à la cloison porteuse 26. A titre d'exemple, la portion centrale 51 a une largeur comprise entre 18 et 30 mm, de préférence 24 mm. A titre d'exemple, la semelle supérieure 52 a une largeur supérieure à 24 mm, par exemple 42 mm, 50 mm ou 60 mm.There [ Fig.5 ] shows another embodiment of the supporting partition 226, which presents, successively in the thickness direction of the body 5, an upper flange 52 arranged parallel against the lower plate 22 and a central portion 51 arranged under the upper flange 52 The upper sole 52 has the width W greater than the width of the bottom part 32. Conversely, the central portion 51 can be equal to or narrower than the bottom part 32 of the groove 30. The upper sole 52 and the. central portion 51 are for example made of plywood. This construction makes it possible to limit the weight and the thermal bridge in relation to the supporting partition 26. For example, the central portion 51 has a width of between 18 and 30 mm, preferably 24 mm. For example, the upper sole 52 has a width greater than 24 mm, for example 42 mm, 50 mm or 60 mm.

Dans un mode de réalisation, la semelle supérieure 52 peut avoir une largeur égale à l'espacement entre la cloison porteuse 226 et une cloison secondaire adjacente à la cloison porteuse 226 ou inférieure à cet espacement. Dans un mode de réalisation, les cloisons porteuses 226 et les éventuelles cloisons secondaires 25 sont distribuées selon un pas d'espacement uniforme et la semelle supérieure 52 peut avoir une largeur égale au pas d'espacement uniforme ou plus petit que celui-ci.In one embodiment, the upper flange 52 may have a width equal to the spacing between the supporting partition 226 and a secondary partition adjacent to the supporting partition 226 or less than this spacing. In one embodiment, the supporting partitions 226 and any secondary partitions 25 are distributed in a uniform spacing pitch and the upper flange 52 can have a width equal to the uniform spacing pitch or smaller than this.

La [Fig.2] montre aussi d'autres caractéristiques de la caisse autoporteuse 5, pouvant être utilisées selon les besoins :

  • pour faire circuler un gaz inerte dans la barrière isolante primaire, des perçages 28 sont ménagés dans les voiles 27 de la caisse 5.
  • un bouchon perméable au gaz 17, en tissu de fibre de verre, est collé devant chaque perçage 28 sur la surface intérieure du voile 27 pour éviter les fuites de la garniture calorifuge.
  • des tenons de fixation 19 servant de surface d'appui pour les organes de retenue primaires sont fixés contre les voiles 27 sur des rebords du panneau de fond 23.
  • un peigne raidisseur 16 perpendiculaire aux cloisons porteuses 26 et cloisons secondaires 25 s'étend entre les voiles 24 perpendiculairement au panneau de fond 23. Au niveau de son intersection avec les cloisons porteuses 26 et cloisons secondaires 25, il présente des encoches pour former un emboîtement avec les cloisons porteuses 26 et cloisons secondaires 25.
  • des rainures 18 ménagées dans le panneau de fond 23 et les cloisons porteuses 26 permettent de loger les portions saillantes de la membrane étanche secondaire 4.
There [ Fig.2 ] also shows other characteristics of the self-supporting body 5, which can be used as needed:
  • to circulate an inert gas in the primary insulating barrier, holes 28 are provided in the sails 27 of the body 5.
  • a gas-permeable plug 17, made of fiberglass fabric, is glued in front of each hole 28 on the interior surface of the veil 27 to prevent leaks from the heat-insulating gasket.
  • fixing tenons 19 serving as a bearing surface for the primary retaining members are fixed against the sails 27 on the edges of the bottom panel 23.
  • a stiffening comb 16 perpendicular to the load-bearing partitions 26 and secondary partitions 25 extends between the sails 24 perpendicular to the bottom panel 23. At the level of its intersection with the load-bearing partitions 26 and secondary partitions 25, it has notches to form a nesting with the load-bearing partitions 26 and secondary partitions 25.
  • grooves 18 made in the bottom panel 23 and the supporting partitions 26 make it possible to accommodate the projecting portions of the secondary waterproof membrane 4.

Au lieu du bois contreplaqué, des matériaux composites peuvent être utilisés pour réaliser tout ou partie de la caisse autoporteuse. Par exemple, des matériaux composites appropriés sont enseignés dans WO-A-2015079135 .Instead of plywood, composite materials can be used to make all or part of the self-supporting box. For example, suitable composite materials are taught in WO-A-2015079135 .

Une barrière isolante primaire peut être construite avec les caisses 5 décrites ci-dessus dans sa totalité ou seulement dans certaines parties de la cuve. Par exemple les caisses 5 décrites ci-dessus peuvent être utilisées à proximité des arêtes de la cuve tandis que d'autres blocs isolants sont utilisés dans d'autres portions des parois de cuve. Un tel agencement est décrit par exemple dans WO-A-2019077253 .A primary insulating barrier can be constructed with the boxes 5 described above in its entirety or only in certain parts of the tank. For example, the boxes 5 described above can be used near the edges of the tank while other insulating blocks are used in other portions of the tank walls. Such an arrangement is described for example in WO-A-2019077253 .

En référence à la [Fig.6], une vue écorchée d'un navire méthanier 70 montre une cuve 71 étanche et isolée de forme générale prismatique montée dans la double coque 72 du navire. La paroi de la cuve 71 comporte une barrière étanche primaire destinée à être en contact avec le gaz liquéfié contenu dans la cuve, une barrière étanche secondaire agencée entre la barrière étanche primaire et la double coque 72 du navire, et deux barrières isolante agencées respectivement entre la barrière étanche primaire et la barrière étanche secondaire et entre la barrière étanche secondaire et la double coque 72. Dans une variante simplifiée, le navire comporte une simple coque.With reference to the [ Fig.6 ], a cutaway view of an LNG ship 70 shows a watertight and insulated tank 71 of generally prismatic shape mounted in the double hull 72 of the ship. The wall of the tank 71 comprises a primary waterproof barrier intended to be in contact with the liquefied gas contained in the tank, a secondary waterproof barrier arranged between the primary waterproof barrier and the double hull 72 of the ship, and two insulating barriers arranged respectively between the primary waterproof barrier and the secondary waterproof barrier and between the secondary waterproof barrier and the double hull 72. In a simplified variant, the ship comprises a simple shell.

De manière connue en soi, des canalisations de chargement/déchargement 73 disposées sur le pont supérieur du navire peuvent être raccordées, au moyen de connecteurs appropriées, à un terminal maritime ou portuaire pour transférer une cargaison de gaz liquéfié depuis ou vers la cuve 71.In a manner known per se, loading/unloading pipes 73 arranged on the upper deck of the ship can be connected, by means of appropriate connectors, to a maritime or port terminal to transfer a cargo of liquefied gas from or to the tank 71.

La [Fig.6] représente un exemple de terminal maritime comportant un poste de chargement et de déchargement 75, une conduite sous-marine 76 et une installation à terre 77. Le poste de chargement et de déchargement 75 est une installation fixe offshore comportant un bras mobile 74 et une tour 78 qui supporte le bras mobile 74. Le bras mobile 74 porte un faisceau de tuyaux flexibles isolés 79 pouvant se connecter aux canalisations de chargement/déchargement 73. Le bras mobile 74 orientable s'adapte à tous les gabarits de méthaniers. Une conduite de liaison non représentée s'étend à l'intérieur de la tour 78. Le poste de chargement et de déchargement 75 permet le chargement et le déchargement du méthanier 70 depuis ou vers l'installation à terre 77. Celle-ci comporte des cuves de stockage de gaz liquéfié 80 et des conduites de liaison 81 reliées par la conduite sous-marine 76 au poste de chargement ou de déchargement 75. La conduite sous-marine 76 permet le transfert du gaz liquéfié entre le poste de chargement ou de déchargement 75 et l'installation à terre 77 sur une grande distance, par exemple 5 km, ce qui permet de garder le navire méthanier 70 à grande distance de la côte pendant les opérations de chargement et de déchargement.There [ Fig.6 ] represents an example of a maritime terminal comprising a loading and unloading station 75, an underwater pipe 76 and an onshore installation 77. The loading and unloading station 75 is a fixed offshore installation comprising a movable arm 74 and a tower 78 which supports the mobile arm 74. The mobile arm 74 carries a bundle of insulated flexible pipes 79 which can connect to the loading/unloading pipes 73. The adjustable mobile arm 74 adapts to all LNG carrier templates. A connection pipe not shown extends inside the tower 78. The loading and unloading station 75 allows the loading and unloading of the LNG tanker 70 from or to the onshore installation 77. This includes liquefied gas storage tanks 80 and connecting pipes 81 connected by the underwater pipe 76 to the loading or unloading station 75. The underwater pipe 76 allows the transfer of the liquefied gas between the loading or unloading station 75 and the onshore installation 77 over a long distance, for example 5 km, which makes it possible to keep the LNG ship 70 at a long distance from the coast during loading and unloading operations.

Pour engendrer la pression nécessaire au transfert du gaz liquéfié, on met en oeuvre des pompes embarquées dans le navire 70 et/ou des pompes équipant l'installation à terre 77 et/ou des pompes équipant le poste de chargement et de déchargement 75.To generate the pressure necessary for the transfer of the liquefied gas, pumps on board the ship 70 and/or pumps fitted to the on-shore installation 77 and/or pumps fitted to the loading and unloading station 75 are used.

Bien que l'invention ait été décrite en liaison avec plusieurs modes de réalisation particuliers, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention.Although the invention has been described in connection with several particular embodiments, it is quite obvious that it is in no way limited and that it includes all the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

L'usage du verbe « comporter », « comprendre » ou « inclure » et de ses formes conjuguées n'exclut pas la présence d'autres éléments ou d'autres étapes que ceux énoncés dans une revendication.The use of the verb “include”, “understand” or “include” and its conjugated forms does not exclude the presence of other elements or other steps than those set out in a claim.

Dans les revendications, tout signe de référence entre parenthèses ne saurait être interprété comme une limitation de la revendication.In the claims, any parenthetical reference sign shall not be construed as a limitation of the claim.

Claims (17)

  1. A self-supporting case (5) suitable for supporting and thermally insulating a sealed membrane (6) intended to contain a fluid, the case (5) comprising:
    a bottom panel (23),
    lateral webs (24, 27) fixed to the bottom panel and protruding at right angles on one side of the bottom panel to delimit the outline of an internal space of the case,
    a cover panel (7) supported and fixed on a top edge of the lateral webs parallel to the bottom panel and at a distance from the bottom panel to close the internal space of the case, the cover panel comprising a top plate (21) and a bottom plate (22) superposed on and fixed to one another,
    at least one groove (30) formed in the cover panel and emerging on a top surface of the cover panel to receive a weld support (8) intended to retain a sealed membrane (6) on the cover panel,
    at least one supporting partition (26, 126, 226) extending longitudinally vertically in line with the groove (30) parallel to the groove, the supporting partition being arranged at right angles to the bottom panel (23) and to the cover panel (7), the supporting partition extending between said lateral webs (27) so as to divide the internal space into a plurality of compartments intended to receive a heat-insulating packing, the supporting partition (26, 126, 226) having a top surface in contact with the bottom plate (22) of the cover panel and a bottom surface in contact with the bottom panel,
    and fasteners (35) engaged at right angles in the bottom plate (22) and the top surface of the supporting partition (26, 126, 226) to fasten the supporting partition to the cover panel,
    characterized in that the groove (30) has a section comprising, in succession in a thickness-wise direction of the top plate, a wider bottom part (32) and a narrower orifice part (31),
    and that the top surface of the supporting partition (26, 126, 226) is wider than the bottom part (32) of the groove, the fasteners (35) being engaged in a zone of the bottom plate (22) offset laterally with respect to the bottom part (32) of the groove.
  2. The case as claimed in claim 1, wherein the groove (30) is formed only in the top plate (21) of the cover panel.
  3. The case as claimed in claim 1 or 2, wherein the fasteners (35) fasten the supporting partition (26, 126, 226) to the cover panel independently of the top plate (21).
  4. The case as claimed in one of claims 1 to 3, wherein the groove (30) has a T-shaped section, in which the bottom part (32) of the groove corresponds to the horizontal bar of the T and the orifice part (31) corresponds to the vertical bar of the T.
  5. The case as claimed in one of claims 1 to 4, wherein the bottom part (32) of the groove has a width of between 20 and 30 mm.
  6. The case as claimed in one of claims 1 to 5, wherein a difference between the width of the bottom part (32) of the groove and the width (W) of the top surface of the supporting partition is greater than 10 mm.
  7. The case as claimed in one of claims 1 to 6, wherein a median line of the bottom part (32) of the groove is situated vertically in line with a median plane of the supporting partition (26, 126, 226).
  8. The case as claimed in one of claims 1 to 7, wherein the fasteners (35) are positioned on either side of a median plane of the supporting partition.
  9. The case as claimed in one of claims 1 to 8, wherein the supporting partition (26, 126, 226) is made of wood, of plywood or of composite material.
  10. The case as claimed in one of claims 1 to 9, wherein the supporting partition (26, 126) has a uniform width that is wider than the bottom part of the groove.
  11. The case as claimed in one of claims 1 to 9, wherein the internal partition (226) has a top sole plate (52) positioned parallel against the bottom plate (22) and a central portion (51) positioned under the top sole plate, the top sole plate (52) being wider than the bottom part (32) of the groove, the central portion (51) having an equal or narrower width than the bottom part (32) of the groove.
  12. The case as claimed in one of claims 1 to 10, wherein the supporting partition (126) has a multilayer structure in a widthwise direction, the multilayer structure comprising a core (41) made of insulating material and two lateral plates (42) that are more rigid than the insulating material, the fasteners (35) being engaged in the lateral plates (42).
  13. The case as claimed in one of claims 1 to 12, comprising two parallel grooves (30) formed in the cover panel and a respective internal partition (26, 126, 226) extending vertically in line with each groove.
  14. A sealed and thermally insulating tank for storing a fluid, said tank comprising a tank wall (1) fixed onto a supporting wall (2), wherein the tank wall comprises, in the thickness-wise direction from the outside to the inside of said tank, a secondary insulating barrier (3) retained on said supporting wall (2), a secondary sealed membrane (4) retained on said secondary insulating barrier, a primary insulating barrier retained on said secondary sealed membrane and a primary sealed membrane (6) retained on said primary insulating barrier, characterized in that said primary insulating barrier is essentially composed of cases (5) as claimed in one of claims 1 to 13 juxtaposed and filled with a heat-insulating packing, the primary sealed membrane (6) being retained on the cover panels of said cases by weld supports (8) inserted in said grooves (30).
  15. A vessel (70) for transporting a fluid, the vessel comprising a double-hull (72) and a tank (71) as claimed in claim 14 positioned in the double-hull (72).
  16. A transfer system for a fluid, the system comprising a vessel (70) as claimed in claim 15, insulated pipelines (73, 79, 76, 81) arranged so as to link the tank (71) of the vessel to a floating or onshore storage installation (77) and a pump for driving a fluid through the insulated pipelines from or to the floating or onshore storage installation to or from the tank of the vessel.
  17. A method for loading or offloading a vessel (70) as claimed in claim 15, wherein a fluid is conveyed through insulating pipelines (73, 79, 76, 81) from or to a floating or onshore storage installation (77) to or from the tank (71) of the vessel.j
EP21724626.3A 2020-05-27 2021-05-06 Free-standing casing suitable for supporting and thermally insulating a sealed membrane Active EP4139602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2005609A FR3110952B1 (en) 2020-05-27 2020-05-27 Self-supporting box suitable for the support and thermal insulation of a waterproof membrane
PCT/EP2021/062018 WO2021239432A1 (en) 2020-05-27 2021-05-06 Free-standing casing suitable for supporting and thermally insulating a sealed membrane

Publications (2)

Publication Number Publication Date
EP4139602A1 EP4139602A1 (en) 2023-03-01
EP4139602B1 true EP4139602B1 (en) 2024-06-12

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EP (1) EP4139602B1 (en)
JP (1) JP2023527013A (en)
KR (1) KR102548503B1 (en)
CN (1) CN114008375A (en)
FR (1) FR3110952B1 (en)
WO (1) WO2021239432A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3142528A1 (en) * 2022-11-29 2024-05-31 Gaztransport Et Technigaz Self-supporting box suitable for supporting and thermally insulating a waterproof membrane

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629897B1 (en) 1988-04-08 1991-02-15 Gaz Transport IMPROVED WATERPROOF AND THERMALLY INSULATING TANK, INTEGRATED INTO THE CARRIER STRUCTURE OF A VESSEL
FR2798902B1 (en) 1999-09-29 2001-11-23 Gaz Transport & Technigaz WATERPROOF AND THERMALLY INSULATING TANK INTEGRATED INTO A VESSEL CARRIER STRUCTURE AND METHOD OF MANUFACTURING INSULATING BOXES FOR USE IN THIS TANK
FR2867831B1 (en) * 2004-03-17 2006-05-19 Gaz Transport & Technigaz WOOD-SUPPORTING BODY SUITABLE FOR THE SUPPORT AND THERMAL INSULATION OF A SEALED TANK MEMBRANE
FR2877639B1 (en) * 2004-11-10 2006-12-15 Gaz Transp Et Technigaz Soc Pa SEALED AND THERMALLY INSULATED TANK INTEGRATED WITH THE SHELLING STRUCTURE OF A SHIP
FR2987100B1 (en) * 2012-02-20 2015-04-10 Gaztransp Et Technigaz CALORIFYING ELEMENTS FOR SEALED AND THERMALLY INSULATED TANKS
FR2987424B1 (en) * 2012-02-23 2016-06-10 Gaztransport Et Technigaz INSULATING BOX COMPRISING A SPACE OF FLOW
FR3004512B1 (en) * 2013-04-15 2016-09-30 Gaztransport Et Technigaz SEALED AND THERMALLY INSULATED TANK
FR3014085B1 (en) 2013-11-29 2017-12-29 Gaztransport Et Technigaz SELF-CONDUCTING BODY FOR THE THERMAL INSULATION OF A STORAGE TANK FOR A FLUID
KR20150069749A (en) * 2013-12-16 2015-06-24 에스티엑스조선해양 주식회사 Membrane of lng cargo tank
FR3030014B1 (en) * 2014-12-15 2017-10-13 Gaztransport Et Technigaz INSULATING BLOCK SUITABLE FOR MAKING AN INSULATING WALL IN A WATERPROOF TANK
GB2554862A (en) * 2016-10-04 2018-04-18 Torgy Lng Holding As Secondary barrier system
WO2019077253A1 (en) 2017-10-20 2019-04-25 Gaztransport Et Technigaz Sealed and thermally insulating tank with several areas

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FR3110952B1 (en) 2022-05-06
WO2021239432A1 (en) 2021-12-02
CN114008375A (en) 2022-02-01
FR3110952A1 (en) 2021-12-03
KR20220012837A (en) 2022-02-04
KR102548503B1 (en) 2023-06-28
EP4139602A1 (en) 2023-03-01
JP2023527013A (en) 2023-06-26

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