EP4139602A1 - 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

Info

Publication number
EP4139602A1
EP4139602A1 EP21724626.3A EP21724626A EP4139602A1 EP 4139602 A1 EP4139602 A1 EP 4139602A1 EP 21724626 A EP21724626 A EP 21724626A EP 4139602 A1 EP4139602 A1 EP 4139602A1
Authority
EP
European Patent Office
Prior art keywords
groove
load
bearing partition
cover panel
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.)
Pending
Application number
EP21724626.3A
Other languages
German (de)
French (fr)
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
Original Assignee
Gaztransport et Technigaz SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gaztransport et Technigaz SA filed Critical Gaztransport et Technigaz SA
Publication of EP4139602A1 publication Critical patent/EP4139602A1/en
Pending legal-status Critical Current

Links

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
    • 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 
    • 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
    • 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
    • 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 the support and thermal insulation of the membranes of such tanks.
  • Sealed and thermally insulating tanks can be used in different industries to store fluids.
  • liquefied natural gas is a liquid with a high methane content that can be stored at atmospheric pressure at around -163 ° C in terrestrial storage tanks or in on-board tanks. in floating structures.
  • Liquefied Petroleum Gas can be stored at a temperature between -50 ° C and 0 ° C.
  • the tank may be intended for the transport of liquefied gas or to receive liquefied gas serving as fuel for the propulsion of the floating structure.
  • a self-supporting wooden box suitable for the support and thermal insulation of a waterproof membrane intended to contain a fluid comprising: a back panel, side walls fixed to the base panel and projecting perpendicularly from one side of the base panel to delimit the outline of an interior space of the body, a cover panel supported and fixed to an upper edge of the side walls parallel to the base panel and away from the base panel to close the interior space of the body, the cover panel having a top plate and a bottom plate superimposed and fixed to each other, at least one groove made 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 in line with the or each groove parallel to the groove, the load-bearing partition being arranged perpendicularly to the bottom panel and to the cover panel, the load-bearing partition extending between said side walls of so as to divide the interior space into a
  • this self-supporting body is used to produce 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 tie 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 clips.
  • a secondary self-supporting body which comprises a simple grooved cover plate with grooves having a T-shaped section to receive a support for weld in the form of a wing bent 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 in the bottom of the groove.
  • An object of the invention is to provide a strong self-supporting body so that it can be used to provide a primary insulating barrier in a tank, liable to be subjected to dynamic pressures and impacts due to the sloshing of the cargo.
  • Another object of the invention is to allow the use of a weld support in the form of a wing bent at right angles also in a primary waterproof membrane, for example with a view to simplifying or standardizing procedures for welding. manufacturing and reduce a parts inventory.
  • the invention provides an abovementioned self-supporting body, 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 load-bearing wall is wider than the bottom part of the groove, the clips being engaged in an area of the lower plate laterally offset from the bottom part of the groove.
  • the clips engaged in the bottom plate to attach the load-bearing partition to the cover panel do not weaken the cover panel directly above the groove. This arrangement therefore makes it possible to reliably fix the load-bearing partition while having an increased mechanical strength of the cover panel compared to a box of the prior art.
  • such a self-supporting body can include one or more of the following arrangements.
  • the groove is provided only in the top plate of the cover panel.
  • the clips attach the load-bearing bulkhead to the cover panel independent of the top plate.
  • the top plate of the cover panel is not weakened by the presence of the clips.
  • 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 difference 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 load-bearing partition.
  • the fasteners are arranged on either side of a median plane of the load-bearing partition.
  • the load-bearing partition is made of wood, plywood or composite.
  • the load-bearing partition has a uniform width that is wider than the bottom part of the groove.
  • the internal partition has an upper flange disposed parallel against the lower plate and a central portion disposed 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 clips 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 formed 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 sealed and thermally insulating tank for storing a fluid, said tank comprising a tank wall fixed to a supporting wall, wherein the vessel wall comprises, in the direction of thickness from the exterior to the interior of said vessel, a secondary insulating barrier retained on said supporting wall, a secondary waterproof membrane retained on said secondary insulating barrier, a barrier primary insulating barrier retained on said secondary waterproof membrane and a primary waterproof membrane retained on said primary insulating barrier, characterized in that said primary insulating barrier essentially consists 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 an onshore 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 vessel, a floating storage and regasification unit (FSRU), a floating production and remote storage unit (FPSO) and others.
  • FSRU floating storage and regasification unit
  • FPSO floating production and remote storage unit
  • a vessel for transporting a fluid comprises a double hull and a said tank arranged 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 isolated pipes from or to a floating or terrestrial storage installation to or from the tank of the vessel. 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 a fluid through insulated pipelines from or towards the floating or terrestrial storage facility to or from the vessel of the vessel.
  • Figures 3 to 5 are enlarged views of an area III of the illustrating three embodiments of a load-bearing partition.
  • the general structure of a tank wall 1, sealed and thermally insulating, integrated and anchored to a load-bearing wall 2, is illustrated on .
  • the tank wall 1 can be part of a tank having different geometries, for example a polyhedral shape.
  • Such a structure can be implemented over large surfaces having various orientations, for example to cover the bottom, ceiling and side walls of a polyhedral tank. The orientation of the 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 a 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 attached 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 invar, the coefficient of expansion of which is typically between 1.2.10 - 6 and 2.10 -6 K -1 . It is also possible to use alloys of iron and manganese, the coefficient of expansion of which is typically of the order of 7 to 9.10 -6 K -1 .
  • the strakes 10 are welded in a sealed manner by their side edges raised on parallel welding 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. , or differently.
  • the number 9 designates a groove for receiving a weld support for the secondary waterproof membrane 4.
  • Box 5 partially visible on the has an overall parallelepipedal shape.
  • The shows a side plan view according to arrow II of the .
  • the upper 21 and lower 22 plates are fastened together, for example, at the periphery of the load-bearing 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 side 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 the 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 necessary by stapling, screwing and / or gluing.
  • the secondary partitions 25 have a width of 12 mm and the veils of longitudinal 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 body 5 has a single load-bearing partition 26 and a single groove 30 or, on the contrary, a number of load-bearing partitions 26 and grooves 30 greater than two.
  • the groove 30 has an inverted T-shaped section, 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 right angles, according to the known technique.
  • the bottom portion 32 could extend from one side of the filler portion only, 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 excess width makes it possible to place rows of staples 35 offset laterally with respect to the bottom part 32. , that is to say outside the zone located directly in line with the groove 30, to fix the load-bearing 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 portion 32 of which is for example 24mm wide. Indeed, even if the clips 35 may 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 over-width of the cover panel. load-bearing partition 26 is greater than 10mm.
  • the width W is 36 mm or more and preferably 42 mm.
  • the rigidity of the cover panel 7 is further improved by the following measures: -
  • the groove 30 is formed only in the upper plate 21 of the cover panel.
  • the groove 30 does not affect the rigidity of the bottom 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 load-bearing partition.
  • 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 with respect to the load-bearing partition 26.
  • the side plates 42 have a width of 12 mm.
  • the upper sole 52 has the width W greater than the width of the bottom part 32.
  • the central portion 51 may be equal to or narrower than the bottom part 32 of the groove 30.
  • the upper sole 52 and the portion central 51 are for example in plywood. This construction makes it possible to limit the weight and the thermal bridge with respect to the load-bearing 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 load-bearing partition 226 and a secondary partition adjacent to the load-bearing partition 226 or less than this spacing. In one embodiment, the load-bearing partitions 226 and any secondary partitions 25 are distributed at a uniform spacing pitch and the upper flange 52 may have a width equal to or smaller than the uniform spacing pitch.
  • The also shows other characteristics of the self-supporting box 5, which can be used as required: - To circulate an inert gas in the primary insulating barrier, holes 28 are made in the sails 27 of the body 5. - A gas permeable plug 17, made of fiberglass fabric, is glued in front of each bore 28 on the inner surface of the web 27 to prevent leaks from the heat-insulating lining. - Fixing pins 19 serving as a bearing surface for the primary retaining members are fixed against the webs 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 walls 24 perpendicular to the bottom panel 23.
  • composite materials can be used to make all or part of the self-supporting crate.
  • suitable composite materials are taught in WO-A-2015079135.
  • a primary insulating barrier can be constructed with the boxes described above in its entirety or only in parts of the vessel.
  • 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 carrier 70 shows a sealed and insulated tank 71 of generally prismatic shape mounted in the double hull 72 of the ship.
  • the wall of the vessel 71 comprises a primary sealed barrier intended to be in contact with the liquefied gas contained in the vessel, a secondary sealed barrier arranged between the primary sealed barrier and the double hull 72 of the vessel, and two insulating barriers arranged respectively between the primary watertight barrier and the secondary watertight barrier and between the secondary watertight barrier and the double hull 72.
  • the ship has a single hull.
  • loading / unloading pipes 73 arranged on the upper deck of the ship can be connected, by means of suitable connectors, to a maritime or port terminal for transferring a cargo of liquefied gas from or to the tank 71.
  • the shows 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 off-shore installation comprising a movable arm 74 and a tower 78 which supports the movable arm 74.
  • the movable arm 74 carries a bundle of insulated flexible pipes 79 which can be connected to the loading / unloading pipes 73.
  • the movable arm 74 can be swiveled and adapts to all sizes of LNG carriers.
  • a connecting pipe, not shown, extends inside the tower 78.
  • the loading and unloading station 75 allows the loading and unloading of the LNG carrier 70 from or to the onshore installation 77.
  • the latter comprises 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 installation on land 77 over a great distance, for example 5 km, which makes it possible to keep the LNG carrier 70 at a great distance from the coast during loading and unloading operations.
  • pumps on board the ship 70 and / or pumps fitted to the shore installation 77 and / or pumps fitted to the loading and unloading station 75 are used.

Abstract

A free-standing casing comprises at least one groove (30) provided in the cover panel and emerging at an upper surface of the cover panel in order to receive a welding support. At least one bearing partition (26) extends longitudinally in line with the groove (30). Fasteners (35) perpendicularly engaged in the lower plate (22) and the upper surface of the bearing partition (26) fasten the bearing partition to the cover panel. The upper surface of the bearing partition (26) is wider than the bottom part (32) of the groove (30) and the fasteners (35) are engaged in a zone of the lower plate (22) that is laterally offset relative to the bottom part (32) of the groove. The primary insulating barrier of a tank is substantially formed by casings filled with a heat-insulated lining. The primary sealed membrane is retained on the cover panels by welding supports inserted into the grooves (30).

Description

    Caisse autoporteuse convenant pour le soutien et l'isolation thermique d'une membrane étancheSelf-supporting body suitable for the support and thermal insulation of a waterproof membrane
  • 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 the support and thermal insulation of 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.Sealed 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 terrestrial 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 the transport of liquefied gas or to receive liquefied gas serving as fuel for the propulsion of the floating structure.
  • 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.    There is known, for example in FR-A-2867831, a self-supporting wooden box suitable for the support and thermal insulation of a waterproof membrane intended to contain a fluid, the box comprising:
    a back panel,
    side walls fixed to the base panel and projecting perpendicularly from one side of the base panel to delimit the outline of an interior space of the body,
    a cover panel supported and fixed to an upper edge of the side walls parallel to the base panel and away from the base panel to close the interior space of the body, the cover panel having a top plate and a bottom plate superimposed and fixed to each other,
    at least one groove made 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 in line with the or each groove parallel to the groove, the load-bearing partition being arranged perpendicularly to the bottom panel and to the cover panel, the load-bearing partition extending between said side walls of so as to divide the interior space into a plurality of compartments intended to receive a heat insulating lining, the load-bearing 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 perpendicularly engaged with the bottom plate and the top surface of the load-bearing bulkhead to attach the load-bearing bulkhead 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 body is used to produce 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 tie strip stapled into the groove. For 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 clips.
  • 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 comprises a simple grooved cover plate with grooves having a T-shaped section to receive a support for weld in the form of a wing bent 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 in the bottom of the groove.
  • 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 object of the invention is to provide a strong self-supporting body so that it can be used to provide a primary insulating barrier in a tank, liable to be subjected to dynamic pressures and impacts due to the sloshing of the cargo. Another object of the invention is to allow the use of a weld support in the form of a wing bent at right angles also in a primary waterproof membrane, for example with a view to simplifying or standardizing procedures for welding. manufacturing and reduce a 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 an abovementioned self-supporting body, 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 load-bearing wall is wider than the bottom part of the groove, the clips being engaged in an area of the lower plate laterally offset from the bottom part of the groove.
  • Grace 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 clips engaged in the bottom plate to attach the load-bearing partition to the cover panel do not weaken the cover panel directly above the groove. This arrangement therefore makes it possible to reliably fix the load-bearing partition while having an increased mechanical strength 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 can 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 top 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 bulkhead to the cover panel independent of the top plate. Thus, the top plate of the cover panel is not weakened by the presence of the clips.
  • 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 difference 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 load-bearing 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 load-bearing 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 load-bearing partition has a uniform width that is 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 disposed parallel against the lower plate and a central portion disposed 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 clips 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 formed 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 sealed and thermally insulating tank for storing a fluid, said tank comprising a tank wall fixed to a supporting wall,
    wherein the vessel wall comprises, in the direction of thickness from the exterior to the interior of said vessel, a secondary insulating barrier retained on said supporting wall, a secondary waterproof membrane retained on said secondary insulating barrier, a barrier primary insulating barrier retained on said secondary waterproof membrane and a primary waterproof membrane retained on said primary insulating barrier, characterized in that said primary insulating barrier essentially consists 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 an onshore 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 vessel, a floating storage and regasification unit (FSRU), a floating production and remote 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 said tank arranged 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 isolated pipes from or to a floating or terrestrial storage installation to or from the tank of the vessel. 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 a fluid through insulated pipelines from or towards the floating or terrestrial storage facility to or from the vessel of the vessel.
  • 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.The invention will be better understood, and other aims, details, characteristics and advantages thereof will emerge more clearly during the following description of several particular embodiments of the invention, given solely by way of illustration and not by way of limitation. , with reference to the accompanying drawings.
  • La est une vue en perspective écorchée d’une paroi de cuve étanche et thermiquement isolante dans laquelle des caisses autoporteuses peuvent être utilisées.The is a cutaway perspective view of a sealed and thermally insulating tank wall in which self-supporting boxes can be used.
  • La est une vue de côté d’une caisse autoporteuse convenant pour une barrière isolante primaire de la paroi d cuve de la .The is a side view of a self-supporting body suitable for a primary insulating barrier of the vessel wall of the .
  • Les figures 3 à 5 sont des vues agrandies d’une zone III de la illustrant trois modes de réalisation d’une cloison porteuse. Figures 3 to 5 are enlarged views of an area III of the illustrating three embodiments of a load-bearing partition.
  • La est une représentation schématique écorchée d’une cuve de navire méthanier et d’un terminal de chargement/déchargement de cette cuve.The is a cut-away schematic representation of an LNG vessel tank and a loading / unloading terminal for this tank.
  • 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 . La paroi de cuve 1 peut faire partie d’une cuve ayant différentes géométries, par exemple une forme polyédrique. La 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 œuvre 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 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, sealed and thermally insulating, integrated and anchored to a load-bearing wall 2, is illustrated on . The tank wall 1 can be part of a tank having different geometries, for example a polyhedral shape. The shows the tank wall 1 in perspective view from above with a cutout to show the structure of this wall. Such a structure can be implemented over large surfaces having various orientations, for example to cover the bottom, ceiling and side walls of a polyhedral tank. The orientation of the 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, regardless of the orientation of the tank wall relative 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 a 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 attached 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 , 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 invar, the coefficient of expansion of which is typically between 1.2.10 - 6 and 2.10 -6 K -1 . It is also possible to use alloys of iron and manganese, the coefficient of expansion of which is typically of the order of 7 to 9.10 -6 K -1 . The strakes 10 are welded in a sealed manner by their side edges raised on parallel welding 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. , or differently. The number 9 designates a groove for receiving a weld support for the secondary waterproof membrane 4.
  • La caisse 5 partiellement visible sur la présente une forme globale parallélépipédique. La en montre une vue plane de côté selon la flèche II de la .Box 5 partially visible on the has an overall parallelepipedal shape. The shows a side plan view according to arrow II of the .
  • En référence à la , 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 , 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 fastened together, for example, at the periphery of the load-bearing 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 side 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 the 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 necessary by stapling, screwing and / or gluing. By way of example, the secondary partitions 25 have a width of 12 mm and the veils of longitudinal 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 body 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 . 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 may of course be different from the example shown in . In its width, the body 5 has a single load-bearing partition 26 and a single groove 30 or, on the contrary, a number of load-bearing partitions 26 and grooves 30 greater than two.
  • Comme mieux visible sur la , 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 best seen on the , the groove 30 has an inverted T-shaped section, 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 right angles, according to the known technique. Alternatively, the bottom portion 32 could extend from one side of the filler portion only, 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 excess width makes it possible to place rows of staples 35 offset laterally with respect to the bottom part 32. , that is to say outside the zone located directly in line with the groove 30, to fix the load-bearing 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 portion 32 of which is for example 24mm wide. Indeed, even if the clips 35 may 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 over-width of the cover panel. load-bearing partition 26 is greater than 10mm. For example the width W is 36 mm or more and preferably 42 mm.
  • Sur la , 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 , the rigidity of the cover panel 7 is further improved by the following measures:
    - The groove 30 is formed only in the upper plate 21 of the cover panel. Thus, the groove 30 does not affect the rigidity of the bottom 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 load-bearing partition.
  • La 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.The shows another embodiment of the load-bearing 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 with respect to the load-bearing partition 26. By way of example, the side plates 42 have a width of 12 mm.
  • La 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. The shows another embodiment of the load-bearing partition 226, which has, successively in the thickness direction of the body 5, an upper sole 52 disposed parallel against the lower plate 22 and a central portion 51 disposed under the upper sole 52. The upper sole 52 has the width W greater than the width of the bottom part 32. Conversely, the central portion 51 may be equal to or narrower than the bottom part 32 of the groove 30. The upper sole 52 and the portion central 51 are for example in plywood. This construction makes it possible to limit the weight and the thermal bridge with respect to the load-bearing partition 26. By way of example, the central portion 51 has a width of between 18 and 30 mm, preferably 24 mm. By way of 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 load-bearing partition 226 and a secondary partition adjacent to the load-bearing partition 226 or less than this spacing. In one embodiment, the load-bearing partitions 226 and any secondary partitions 25 are distributed at a uniform spacing pitch and the upper flange 52 may have a width equal to or smaller than the uniform spacing pitch.
  • La 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.    The also shows other characteristics of the self-supporting box 5, which can be used as required:
    - To circulate an inert gas in the primary insulating barrier, holes 28 are made in the sails 27 of the body 5.
    - A gas permeable plug 17, made of fiberglass fabric, is glued in front of each bore 28 on the inner surface of the web 27 to prevent leaks from the heat-insulating lining.
    - Fixing pins 19 serving as a bearing surface for the primary retaining members are fixed against the webs 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 walls 24 perpendicular to the bottom panel 23. At its intersection with the load-bearing partitions 26 and secondary partitions 25, it has notches to form a interlocking with load-bearing partitions 26 and secondary partitions 25.
    - Grooves 18 formed in the bottom panel 23 and the load-bearing 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 crate. 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 described above in its entirety or only in parts of the vessel. 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 , 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 , a cutaway view of an LNG carrier 70 shows a sealed and insulated tank 71 of generally prismatic shape mounted in the double hull 72 of the ship. The wall of the vessel 71 comprises a primary sealed barrier intended to be in contact with the liquefied gas contained in the vessel, a secondary sealed barrier arranged between the primary sealed barrier and the double hull 72 of the vessel, and two insulating barriers arranged respectively between the primary watertight barrier and the secondary watertight barrier and between the secondary watertight barrier and the double hull 72. In a simplified variant, the ship has a single hull.
  • 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 suitable connectors, to a maritime or port terminal for transferring a cargo of liquefied gas from or to the tank 71.
  • La 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 off-shore 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. The shows 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 off-shore installation comprising a movable arm 74 and a tower 78 which supports the movable arm 74. The movable arm 74 carries a bundle of insulated flexible pipes 79 which can be connected to the loading / unloading pipes 73. The movable arm 74 can be swiveled and adapts to all sizes of LNG carriers. A connecting pipe, not shown, extends inside the tower 78. The loading and unloading station 75 allows the loading and unloading of the LNG carrier 70 from or to the onshore installation 77. The latter comprises 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 installation on land 77 over a great distance, for example 5 km, which makes it possible to keep the LNG carrier 70 at a great distance from the coast during loading and unloading operations.
  • Pour engendrer la pression nécessaire au transfert du gaz liquéfié, on met en œuvre 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 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 obvious that it is in no way limited thereto and that it comprises all the technical equivalents of the means described as well as their combinations if these come 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 "to include", "to understand" or "to include" and its conjugates 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 reference sign in parentheses cannot be interpreted as a limitation of the claim.

Claims (17)

  1. Caisse (5) autoporteuse convenant pour le soutien et l'isolation thermique d'une membrane étanche (6) destinée à contenir un fluide, la caisse (5) comportant :
    un panneau de fond (23),
    des voiles latéraux (24, 27) 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 (7) 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 (21) et une plaque inférieure (22) superposées et fixées l'une à l'autre,
    au moins une rainure (30) ménagée dans le panneau de couvercle et débouchant sur une surface supérieure du panneau de couvercle pour recevoir un support de soudure (8) destiné à retenir une membrane étanche (6) sur le panneau de couvercle,
    au moins une cloison porteuse (26, 126, 226) s’étendant longitudinalement à l’aplomb de la rainure (30) parallèlement à la rainure, la cloison porteuse étant agencée perpendiculairement au panneau de fond (23) et au panneau de couvercle (7), la cloison porteuse s'étendant entre lesdits voiles latéraux (27) de manière à diviser l’espace intérieur en une pluralité de compartiments destinés à recevoir une garniture calorifuge, la cloison porteuse (26, 126, 226) présentant une surface supérieure en contact avec la plaque inférieure (22) du panneau de couvercle et une surface inférieure en contact avec le panneau de fond,
    et des attaches (35) engagées perpendiculairement dans la plaque inférieure (22) et la surface supérieure de la cloison porteuse (26, 126, 226) pour attacher la cloison porteuse au panneau de couvercle,
    caractérisée par le fait que la rainure (30) présente une section comportant, successivement dans une direction d’épaisseur de la plaque supérieure, une partie de fond (32) plus large et une partie d’embouchure (31) plus étroite,
    et que la surface supérieure de la cloison porteuse (26, 126, 226) est plus large que la partie de fond (32) de la rainure, les attaches (35) étant engagées dans une zone de la plaque inférieure (22) décalée latéralement par rapport à la partie de fond (32) de la rainure.    Self-supporting box (5) suitable for the support and thermal insulation of a waterproof membrane (6) intended to contain a fluid, the box (5) comprising:
    a back panel (23),
    side walls (24, 27) fixed to the base panel and projecting perpendicularly from one side of the base panel to delimit the outline of an interior space of the body,
    a cover panel (7) supported and fixed on an upper edge of the side walls parallel to the base panel and away from the base panel to close the interior space of the body, the lid panel having a top plate (21) and a lower plate (22) superimposed and fixed to each other,
    at least one groove (30) formed in the cover panel and opening onto an upper surface of the cover panel to receive a welding support (8) intended to retain a waterproof membrane (6) on the cover panel,
    at least one load-bearing partition (26, 126, 226) extending longitudinally in line with the groove (30) parallel to the groove, the load-bearing partition being arranged perpendicular to the bottom panel (23) and to the cover panel ( 7), the load-bearing partition extending between said side walls (27) so as to divide the interior space into a plurality of compartments intended to receive a heat-insulating lining, the load-bearing partition (26, 126, 226) having an upper surface in contact with the lower plate (22) of the cover panel and a lower surface in contact with the bottom panel,
    and clips (35) perpendicularly engaged with the lower plate (22) and the upper surface of the load-bearing partition (26, 126, 226) for attaching the load-bearing partition to the cover panel,
    characterized in that the groove (30) has a section comprising, successively in a direction of thickness of the upper plate, a wider bottom part (32) and a narrower mouth part (31),
    and that the upper surface of the load-bearing partition (26, 126, 226) is wider than the bottom portion (32) of the groove, the clips (35) being engaged in an area of the lower plate (22) offset laterally relative to the bottom part (32) of the groove.
  2. Caisse selon la revendication 1, dans laquelle la rainure (30) est ménagée seulement dans la plaque supérieure (21) du panneau de couvercle.A case according to claim 1, wherein the groove (30) is formed only in the top plate (21) of the cover panel.
  3. Caisse selon la revendication 1 ou 2, dans laquelle les attaches (35) attachent la cloison porteuse (26, 126, 226) au panneau de couvercle indépendamment de la plaque supérieure (21). A case according to claim 1 or 2, wherein the clips (35) attach the load-bearing partition (26, 126, 226) to the cover panel independent of the top plate (21).
  4. Caisse selon l’une des revendications 1 à 3, dans laquelle la rainure (30) présente une section en forme de T, dans laquelle la partie de fond (32) de la rainure correspond à la barre horizontale du T et la partie d’embouchure (31) correspond à la barre verticale du T.Case according to one of claims 1 to 3, in which 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 part of mouthpiece (31) corresponds to the vertical bar of T.
  5. Caisse selon l’une des revendications 1 à 4, dans laquelle la partie de fond (32) de la rainure présente une largeur comprise entre 20 et 30 mm.Case according to one of claims 1 to 4, wherein the bottom part (32) of the groove has a width of between 20 and 30 mm.
  6. Caisse selon l’une des revendications 1 à 5, dans laquelle un écart entre la largeur de la partie de fond (32) de la rainure et la largeur (W) de la surface supérieure de la cloison porteuse est supérieur à 10mm. A case according to one of claims 1 to 5, wherein a gap between the width of the bottom part (32) of the groove and the width (W) of the upper surface of the supporting partition is greater than 10mm.
  7. Caisse selon l’une des revendications 1 à 6, dans laquelle une ligne médiane de la partie de fond (32) de la rainure est située à l’aplomb d’un plan médian de la cloison porteuse (26, 126, 226).A case according to one of claims 1 to 6, wherein a center line of the bottom portion (32) of the groove is located plumb with a midplane of the load-bearing partition (26, 126, 226).
  8. Caisse selon l’une des revendications 1 à 7, dans laquelle les attaches (35) sont disposées de part et d’autres d’un plan médian de la cloison porteuse.A case according to one of claims 1 to 7, in which the clips (35) are arranged on either side of a median plane of the load-bearing partition.
  9. Caisse selon l’une des revendications 1 à 8, dans laquelle la cloison porteuse (26, 126, 226) est en bois, en bois de contreplaqué ou en composite.A crate according to one of claims 1 to 8, wherein the load-bearing partition (26, 126, 226) is made of wood, plywood or composite.
  10. Caisse selon l’une des revendications 1 à 9, dans laquelle la cloison porteuse (26, 126) présente une largeur uniforme plus large que la partie de fond de la rainure. A case according to one of claims 1 to 9, wherein the load-bearing partition (26, 126) has a uniform width wider than the bottom portion of the groove.
  11. Caisse selon l’une des revendications 1 à 9, dans laquelle la cloison interne (226) présente une semelle supérieure (52) disposée parallèlement contre la plaque inférieure (22) et une portion centrale (51) disposée sous la semelle supérieure, la semelle supérieure (52) étant plus large que la partie de fond (32) de la rainure, la portion centrale (51) présentant une largeur égale ou plus étroite que la partie de fond (32) de la rainure. Case according to one of claims 1 to 9, in which the internal partition (226) has an upper sole (52) disposed parallel against the lower plate (22) and a central portion (51) disposed under the upper sole, the sole the upper (52) being wider than the bottom portion (32) of the groove, the central portion (51) having a width equal to or narrower than the bottom portion (32) of the groove.
  12. Caisse selon l’une des revendications 1 à 10, dans laquelle la cloison porteuse (126) présente une structure multicouche dans une direction de largeur, la structure multicouche comportant un noyau (41) en matière isolante et deux plaques latérales (42) plus rigides que la matière isolante, les attaches (35) étant engagées dans les plaques latérales (42).Box according to one of claims 1 to 10, in which the load-bearing partition (126) has a multilayer structure in a width direction, the multilayer structure comprising a core (41) of insulating material and two side plates (42) which are more rigid. than the insulating material, the clips (35) being engaged in the side plates (42).
  13. Caisse selon l’une des revendications 1 à 12, comportant deux rainures (30) parallèles ménagées dans le panneau de couvercle et une cloison interne respective (26, 126, 226) s’étendant à l’aplomb de chaque rainure.Case according to 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 directly above each groove.
  14. Cuve étanche et thermiquement isolante de stockage d’un fluide, ladite cuve comportant une paroi de cuve (1) fixée sur une paroi porteuse (2),
    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 (3) retenue sur ladite paroi porteuse (2), une membrane étanche secondaire (4) retenue sur ladite barrière isolante secondaire, une barrière isolante primaire retenue sur ladite membrane étanche secondaire et une membrane étanche primaire (6) retenue sur ladite barrière isolante primaire, caractérisée par le fait que ladite barrière isolante primaire est essentiellement constituée de caisses (5) selon l'une des revendications 1 à 13 juxtaposées et remplies d'une garniture calorifuge, la membrane étanche primaire (6) étant retenue sur les panneaux de couvercle desdites caisses par des supports de soudure (8) insérés dans lesdites rainures (30).    Sealed and thermally insulating tank for storing a fluid, said tank comprising a tank wall (1) fixed to a supporting wall (2),
    in which the tank wall comprises, in the direction of the thickness from the outside towards the inside of said tank, a secondary insulating barrier (3) retained on said supporting wall (2), a secondary waterproof membrane (4) retained on said secondary insulating barrier, a primary insulating barrier retained on said secondary waterproof membrane and a primary waterproof membrane (6) retained on said primary insulating barrier, characterized in that said primary insulating barrier essentially consists of boxes (5) according to one of claims 1 to 13 juxtaposed and filled with a heat-insulating lining, the primary waterproof membrane (6) being retained on the cover panels of said boxes by welding supports (8) inserted in said grooves (30).
  15. Navire (70) pour le transport d’un fluide, le navire comportant une double coque (72) et une cuve (71) selon la revendication 14 disposée dans la double coque (72).A vessel (70) for transporting a fluid, the vessel comprising a double hull (72) and a tank (71) according to claim 14 arranged in the double hull (72).
  16. Système de transfert pour un fluide, le système comportant un navire (70) selon la revendication 15, des canalisations isolées (73, 79, 76, 81) agencées de manière à relier la cuve (71) du navire à une installation de stockage flottante ou terrestre (77) 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.A transfer system for a fluid, the system comprising a vessel (70) according to claim 15, insulated pipelines (73, 79, 76, 81) arranged to connect the vessel (71) to a floating storage facility or terrestrial (77) and a pump for driving a fluid through insulated pipelines from or towards the floating or terrestrial storage facility to or from the vessel of the vessel.
  17. Procédé de chargement ou déchargement d’un navire (70) selon la revendication 15, dans lequel on achemine un fluide à travers des canalisations isolées (73, 79, 76, 81) depuis ou vers une installation de stockage flottante ou terrestre (77) vers ou depuis la cuve (71) du navire.A method of loading or unloading a ship (70) according to claim 15, wherein a fluid is conveyed through insulated pipelines (73, 79, 76, 81) from or to a floating or onshore storage facility (77) to or from the vessel (71).
EP21724626.3A 2020-05-27 2021-05-06 Free-standing casing suitable for supporting and thermally insulating a sealed membrane Pending EP4139602A1 (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

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EP4139602A1 true EP4139602A1 (en) 2023-03-01

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EP21724626.3A Pending EP4139602A1 (en) 2020-05-27 2021-05-06 Free-standing casing suitable for supporting and thermally insulating a sealed membrane

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EP (1) EP4139602A1 (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
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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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Publication number Publication date
WO2021239432A1 (en) 2021-12-02
KR102548503B1 (en) 2023-06-28
JP2023527013A (en) 2023-06-26
FR3110952B1 (en) 2022-05-06
KR20220012837A (en) 2022-02-04
FR3110952A1 (en) 2021-12-03
CN114008375A (en) 2022-02-01

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