JP2016524678A - Self-supporting case for insulating a fluid storage tank and method for manufacturing such a case - Google Patents

Abstract

The present invention relates to a method for manufacturing a free-standing case (3, 7) intended to achieve thermal insulation for a tank with a fluid-tight membrane, said method comprising a bottom panel (10) and a cover Supplying a panel (11) and producing a plurality of support webs (14), wherein for each support web (14), a composite material comprising a fiber reinforced plastic matrix is placed in a mold Including: o inserting a fixture into the mold; and o molding the composite material, and in this molding operation, the fixture is placed in the collection of carrier webs (14); The bottom panel (10) and the cover panel (11) are spaced apart in the direction of the thickness of the case (3, 7) and the carrier web (14) extends in the thickness direction in such a way that the bottom panel (10) and Mosquito A step of interposing a carrier web (14) between the panel (11) and fixing the carrier web (14) to the bottom panel (10) and / or the cover panel (14) using the fixture; Lining a plurality of compartments (15) formed between the webs (14) with a thermally insulating lining. The present invention also relates to a case manufactured in this way and a sealed heat insulating tank including a heat insulating barrier including the plurality of cases mentioned above.

Description

  The present invention relates to the field of fluid-sealed and insulated tanks with membranes intended to store and / or transport fluids such as cryogenic fluids.

  A fluid-sealed and insulated tank with a membrane is used in particular for the storage of liquefied natural gas (LNG), which is stored at atmospheric pressure around around minus 162 ° C. Such tanks may be installed on land or in floating facilities. In the case of a floating facility, the tank may be intended to contain liquefied natural gas that functions as a fuel for the transportation of liquefied natural gas or for the propulsion of the floating facility.

  In reference FR 2 877 639, a fluid-sealed and thermally insulated tank with a tank wall is fixed to the support structure of a floating facility and contacts the liquefied natural gas in the direction of thickness from the inside to the outside of the tank. It describes the sequential presentation of the intended primary fluid tight barrier, primary insulation barrier, secondary fluid tight barrier and secondary insulation barrier secured to the support structure.

  The insulation barrier includes a plurality of adjacent parallelepiped thermal insulation cases. The parallelepiped case includes a plywood base panel, a plywood cover panel, and a plurality of support webs interposed between the base panel and the cover panel. The carrying web is corrugated and is formed from a composite material to ensure excellent resistance to compressive forces in a direction perpendicular to the base and cover panels, thereby reducing the water pressure exerted by the liquid contained in the tank. resist. The case is also filled with a thermally insulating lining that extends inside the compartments disposed between the carrier webs.

  The carrier web is bonded to the base and cover panel by gluing, stapling or encapsulating operations. However, none of the methods for joining the carrier web to the base panel and the cover panel are fully satisfactory in terms of reliability and / or assembly simplicity. In particular, the stapling system normally utilized for this type of assembly is undesirable in view of the complex nature of the carrier web material. In fact, securing the composite wall to the base and cover panel with staples tends to reduce the strength of the web.

FR 2 877 639

  The concept on which the present invention is based is to provide a method for manufacturing a self-supporting case for insulating a fluid storage tank, in which case the carrier web is fixed to the base and / or cover panel. This is accomplished in a simple and reliable way.

According to one embodiment, the present invention provides a method for manufacturing a free-standing case intended to provide thermal insulation for a fluid storage tank with a fluid-tight membrane, the method comprising:
Providing a base panel and a cover panel;
-A step of producing a plurality of carrier webs, for each carrier web: placing a composite material comprising a fiber reinforced plastic matrix in a mold;
Inserting a fixing element intended to fix the carrier web to the base panel and / or cover panel into the mold; and molding a composite material, in which the fixing element is a collection of said carrier web Steps including being placed in,
-The supporting web is interposed between the base panel and the cover panel so that the base panel and the cover panel are separated in the thickness direction of the case and the supporting web extends in the thickness direction, and the fixing element is used. Fixing the carrier web to the base panel and / or the cover panel;
Lining a plurality of compartments arranged between the carrier webs by means of a thermal insulating lining.

  Thus, the carrier web can be coupled to the base panel and / or cover panel in a reliable manner, since the fixing elements do not impair the structural integrity of the carrier web, the strength of the carrier web being Do not drop by fixing to.

According to one particular embodiment, the method comprises the steps of:
-A plurality of plates of composite material are placed in the mold;
-Realize that the fixing element is arranged between two adjacent plates of composite material;

  According to one embodiment, the composite material is formed by thermoforming or thermal compression.

According to one embodiment, the present invention also provides a self-supporting case intended to insulate a fluid storage tank with a fluid-tight membrane, said case comprising:
-A base panel and a cover panel;
A plurality of carrier webs interposed between the base panel and the cover panel and extending in a thickness direction so as to define a plurality of compartments;
-A thermally insulating lining extending inside said compartments arranged between the carrier webs;
The carrier web is manufactured by molding a composite material, the composite material comprising a fiber reinforced thermoplastic matrix and a collection of carrier webs during each molding intended to be secured to a base panel and / or cover panel. With elements placed inside.

According to these embodiments, such a case may include one or more of the following features.
The fixing elements are pointed metal rods which are placed in a collection of carrier webs, each metal rod being embedded in a base panel or cover panel.
The fixing elements are bushes with threaded bores, each cooperating with a threaded element passing through the base panel or cover panel.
The fixing element is a wooden sheet placed in a collection of carrier webs, each wooden sheet being fixed against the base panel or cover panel.
A wooden sheet is fixed against the base panel or cover panel by staples.
The fixing elements are L-shaped fixing tabs, each of which passes through a wing embedded in a collection of carrier webs and a screw extending against and affixing to the base panel or cover panel And a wing with an opening that enables
The carrier web has a load distribution plate extending along two edges of the carrier web arranged facing the base panel and the cover panel, respectively, and a fixing element for the base panel and / or the cover panel And placed in a collection of carrier webs at the load distribution plate.
The carrier web has a plurality of corrugations, the axis of which extends perpendicular to the base panel and the cover panel;

  According to one embodiment, the present invention also provides a fluid-sealed and thermally insulated fluid storage tank comprising a heat insulating barrier comprising a plurality of the cases listed above arranged next to each other and a sealing membrane leaning against the heat insulating barrier I will provide a.

  Such tanks may form part of a land-based storage facility for storing LNG, for example, or coastal underwater or offshore floating structures, specifically LNG tankers, floating storage and It may also be installed in regasification units (FSRU), floating productions, storage and landing units (FPSO) and others.

  According to one embodiment, a ship for transporting fluid comprises a double hull and a tank as described above arranged in the double hull.

  According to one embodiment, the present invention also provides a method for loading and unloading such a ship, where the fluid is floated or ground-based through an insulated pipeline. From a storage facility to a ship tank or from a ship tank to a floating or land based storage facility.

  According to one embodiment, the present invention also provides a system for moving fluid, which connects the ship and a tank installed in the hull to a floating or land-based storage facility. An insulated pipeline arranged in such a way that the fluid is propelled through the insulated pipeline from a floating or land-based storage facility to a ship tank or from a ship tank to a floating or land-based storage facility A pump.

  The invention will be more fully understood from the following description of several specific embodiments of the invention, and its further objects, details and advantages will become more apparent from the following, which are given by way of example only with reference to the accompanying drawings, in which: Is not intended to be limiting.

FIG. 3 is a simplified perspective view of a tank wall according to one embodiment. FIG. 2 is a simplified plan view of the tank wall insulation case from FIG. 1. It is a side view of a carrying web. FIG. 4 is a cross-sectional view taken along plane IV-IV in FIG. 3. It is a figure which shows the step of manufacture of a support web. It is a figure which shows the step of manufacture of a support web. 2 is a cross-sectional view showing the assembly of the carrier web to the base panel according to the first embodiment. FIG. FIG. 6 is a cross-sectional view showing assembly of a carrier web to a base panel according to a second embodiment. FIG. 6 is a cross-sectional view showing assembly of a carrier web to a base panel according to a third embodiment. FIG. 6 is a cross-sectional view showing assembly of a carrier web to a base panel according to a fourth embodiment. It is a perspective view which shows the assembly of FIG. FIG. 9 is a diagrammatic cross-sectional view showing assembly of a carrier web to a cover panel according to a fifth embodiment. It is sectional drawing which shows the assembly with respect to the cover panel of a support web by 6th Embodiment. FIG. 14 is a perspective view of the assembly of FIG. 13. It is sectional drawing of the insulation case which shows the assembly with respect to the cover panel and base panel of a support web by 7th Embodiment. FIG. 16 is a cross-sectional view showing a seventh modification of FIG. 15. FIG. 10 is a perspective view of assembly of a web with respect to a base panel according to an eighth embodiment, wherein the carrying web is shown transparent. It is sectional drawing of the diagram which shows one modification of the assembly in FIG. FIG. 10 is a top view of assembly of a carrier web to a base panel according to a ninth embodiment. FIG. 20 is a top view of the assembly of FIG. 19. FIG. 20 is a top view of the carrier web base panel assembly according to the tenth embodiment. FIG. 22 is a side view of the assembly of FIG. 21. It is sectional drawing of the assembly of FIG. FIG. 20 is a perspective view showing assembly of a carrier web to a base panel according to an eleventh embodiment. FIG. 25 is a top view of the assembly of FIG. 24. FIG. 25 is a side view of the assembly of FIG. 24. It is sectional drawing of the assembly of FIG. 1 is a simplified diagrammatic depiction of a tank of an LNG tanker and a terminal for loading and unloading of this tank.

  FIG. 1 shows a tank wall that is fluid tight and insulated. The general structure of such a tank is well known and has a polyhedral form. Thus, assuming that all walls of the tank have a similar general structure, only areas with tank walls are described.

  The tank wall was formed from the outer side to the inner side of the tank, the supporting structure 1 and a heat insulating case 3 arranged on the supporting structure 1 adjacent to each other and secured thereto by a secondary holding element 4. Primary insulation formed by the secondary insulation barrier 2, the secondary sealing film 5 held by the case 3, and the thermal insulation case 7 arranged next to each other and fixed firmly to the secondary sealing film 5 by the primary holding element 8. It comprises a thermal barrier 6 and a primary sealing membrane 9 that is held by the case 7 and intended to contact the cryogenic fluid contained in the tank.

  The support structure 1 may be a self-supporting metal plate in particular, or more generally any type of rigid partition with suitable mechanical properties. Specifically, the support structure may be constituted by a hull or a double hull. The support structure comprises a plurality of walls that define the overall shape of the tank.

The primary and secondary sealing membranes 9 and 5 are formed, for example, from continuous strips of metal strip with raised edges, which are fastened to the covers of the cases 3, 7 by respective raised edges. Welded to a parallel weld support. The metal strip is made of, for example, Invar®, that is, made of an alloy of iron and nickel, and has an expansion coefficient of 1.2. It is between 10 ⁻⁶ and 2.10 ⁻⁶ K ⁻¹ .

  The case 3 of the secondary insulation barrier 2 and the case 7 of the primary insulation barrier 6 may have the same or different structures, and may have the same or different dimensions.

  With reference to FIG. 2, the overall structure of the cases 3, 7 of the secondary insulation barrier 2 and / or the primary insulation barrier 6 will be described. Cases 3 and 7 have a substantially rectangular shape such as a parallelepiped. The cases 3 and 7 include a base panel 10 and a cover panel 11, which are parallel to each other. The base panel 10 and the cover panel 11 are made of plywood, for example. On its inner surface, the cover panel 11 has a groove 12 for accommodating a welding support portion of a metal strip of a sealing film.

  A plurality of spacer elements are interposed between the base panel 10 and the cover panel 11 so as to be orthogonal thereto. The plurality of spacer elements first comprises two opposing side walls 12, 13 and then comprises a plurality of carrier webs 14. The carrier web 14 is arranged between the two side walls 12 and 13 in parallel to each other in a direction perpendicular to the side walls 12 and 13.

  A compartment 15 for accommodating a thermally insulating lining is provided between the carrier webs 14.

  The thermal insulation lining may be made of any material with suitable thermal insulation properties. For example, the thermal insulation lining is selected from materials such as parlay, glass wool, polyurethane foam, polyethylene foam, polyvinyl chloride foam, airgel or others.

  The carrier web 14 is corrugated so that it has a protrusion on either side of its generally longitudinal direction. Each waveform thus extends along an axis orthogonal to the base panel 10 and the cover panel 11. In the embodiment shown, the waveform is substantially a sine wave. However, other forms of waveforms are possible. For example, the waveform may specifically take the form of a triangular tooth or a rectangular notch. Thanks to its shape, the carrier web 14 having such a corrugation does not require a large thickness and has a high buckling resistance. While a waveform with a periodic structure allows for excellent uniformity of compressive strength, it is also possible to provide a non-periodic waveform to meet certain localized mechanical requirements.

  3 and 4 illustrate the carrier web 14. Along its edge extending along the base panel 10 and the cover panel 11, the carrier web 14 comprises load distribution plates 16a, 16b. The upper plate 16 a has a flat surface intended to lean against the cover panel 11, and the lower plate 16 b has a flat surface intended to lean against the base panel 10. The plates 16a, 16b have a width that is greater than the wall thickness of the carrier web 14 in their major part extending between the two plates 16a, 16b. Thus, the load distribution plates 16a, 16b prevent stresses from concentrating in specific areas by providing a larger support surface between the carrier web 14 and the base panel 10 and cover panel 11. The load distribution plate may have a parallelepiped form as shown in FIG. 3 or FIG. In this case, the width of the plates 16a, 16b may be equal to the amplitude of the waveform. In other embodiments shown in FIGS. 17, 20, or 24, the load distribution plates 16a, 16b may themselves have a waveform.

  The carrier web is made of a composite material having a glass fiber reinforced thermoplastic matrix.

  A method of manufacturing the carrier web 14 will be described with reference to FIGS.

  In the first stage shown in FIG. 5, an intermediate product is produced in the form of a plate of composite material. To do this, glass fiber 18 and thermoplastic resin 19 are fed into a double belt press 17. The thermoplastic resin 19 may be loaded into the double belt press 17 in the form of an extruded film or powder. Glass fiber 18 is provided in the form of a glass fiber coil cut to the desired length. The thermoplastic resin 19 and the glass fiber 18 are laminated together in the double belt press 17. At the exit from the double belt press 17, it is possible to obtain a plurality of plates by means of a cutting device. In one embodiment, the thermoplastic resin is based on polypropylene.

  Such plates have a composite structure made of a thermoplastic matrix and glass fiber felt or mat. Such a composite structure is called GMT for glass fiber mat reinforced thermoplastics.

  A composite plate is then formed as shown in FIG. To do this, the composite plates are heated in an oven 20 and then placed in a mold 21 where they are shaped by the application of pressure. The carrier web thus formed is then cooled. The carrier web 14 is thus formed by thermal compression by heating the composite material plate and then deep drawing under pressure. In another embodiment, the carrier web may also be manufactured by thermoforming, i.e. by flux of the composite plate under temperature and vacuum conditions.

  In the embodiment shown in FIGS. 7 to 11, elements for fixing the carrier web 14 to the base panel 10 and / or the cover panel 11 are inserted into the mold 21 during the molding operation. Thus, the carrier web 14 is shaped to cover the fixing element. In other words, the fixing element is placed in a collection of carrier webs 14 in each molding operation.

  In one embodiment, the carrier web 14 is made from a stack of a plurality of composite plates and the anchoring element is placed in the mold 21 so as to be sandwiched between two adjacent composite plates. The fixing elements are thus preferably placed in the collection 5 of the carrier webs 14.

  In the embodiment shown in FIG. 7, the carrier web is a staple or nail type pointed metal rod 22 that is placed into a collection of carrier webs 14 during its forming operation. The metal rod 22 is embedded in the base panel 10, thereby ensuring the fixing of the carrier web 14 to the base panel 10. Similarly, the carrier web 14 also has such a metal rod 22 so as to abut the cover panel 11 along its edge, which is placed in the collection of carrier webs 14 and fixed to the cover panel 11. Is done.

  In the embodiment shown in FIG. 8, the fixing element placed in the collection of carrier webs 14 is an L-shaped fixing tab 23, which is arranged on the side on either side of said web 14. Each of the L-shaped fixed webs 23 includes a first wing 24 embedded in a set of the supporting webs 14 and a second wing 25 protruding laterally toward the outside of the supporting webs 14. The second wing 25 leans against the base panel 10 and has an opening. A screw 26 passes through the opening and is secured to the base panel 10 to ensure the carrying web 14 is secured. Similarly, the edge of the carrier web 14 cooperating with the cover panel 11 may be fitted with such an L-shaped securing tab 23.

  In the embodiment shown in FIG. 9, the fixing element placed in the assembly is a bush 27 with a threaded bore. The bush 27 cooperates with a threaded element such as a screw 28 that passes through an opening formed in the base panel 10 and an opening opposite the bush 27. Similarly, the bush 27 may be provided on the other edge of the carrier web 14.

  In the embodiment shown in FIGS. 10 and 11, a thin wooden plate 29 extends along the respective load distribution plates 16 a, 16 b in the longitudinal direction over the entire length of the carrier web 14. It is set in. The wooden sheet 29 has a rectangular cross section and is provided with a flat surface intended to lean against the cover panel 11 or the base panel 10. In one embodiment, the wooden sheet 29 is secured to the cover panel 11 or the base panel 10 by stapling. Thus, the staples are not taken directly into the composite material.

  In the embodiment in FIG. 12, the support web 14 is fixed to the base panel 10 and the cover panel 11 by using a claw plate 30 inserted between the cover panel 10 and the base panel 11 and the plates 16 a and 16 b of the support web 14. Is done. Such a claw plate 30 includes a carrier plate, a first continuous claw 31 installed in the cover panel 10 or the base panel 11, and a second continuous cuvette installed in the plates 16 a and 16 b of the carrying web 14. Claw 32 to be provided.

  In the embodiment in FIGS. 13 and 14, the carrier web 14 is fixed to the base panel 10 and the cover panel 11 by the rail 33 fixed so as to contact the base panel 10 and the cover panel 11. The rails are arranged to accommodate the plates 16a, 16b of the carrier web 14. The rail 33 is formed by two side wooden strips 34 that can guide the plates 16a, 16b laterally. The two holding strips 35 leaning on the side strips 34 make it possible to hold the load distribution plate in a direction perpendicular to the base panel 10 and the cover panel 11. In order to enable such assembly, the carrier web 14 is first inserted between the base panel 10 and the cover panel 11 by sliding its plates 16a, 16b into the rails 33, and thereafter When the set of webs 14 is positioned, the side edges 12, 13 of the cases 3, 7 can be installed.

  The embodiment of FIG. 15 differs from the embodiment of FIGS. 13 and 14 in that the rail 36 is formed by grooves provided directly in the base panel 10 and the cover panel 11.

  In the embodiment of FIG. 16, the rail 37 formed in the base panel 10 and the cover panel 11 takes the form of a dovetail.

  In the embodiment of FIGS. 17 and 18, the carrier web 14 is secured by hooks 38, one curved end of which cooperates with the plate of the carrier web to cause the carrier web to become the base panel 10 and cover panel. 11 so as to be in contact with 11. In an embodiment not shown, the hook 38 is an elastic hook, allowing an elastic fit by “clipping”. In the embodiment shown in FIG. 17, the hook 38 is rigid and does not move in place to hold the carrier web 14 utilizing a wooden wedge 39 that can be captured through the base panel 10 or the cover panel 11. Like that.

  FIG. 18 shows an embodiment in which the retaining hooks 38 each comprise two jaws 39, 40 arranged on either side of the tongue 41 projecting laterally from the carrier web 14 in the thickness direction of the tank. ing.

  In the embodiment of FIGS. 19 and 20, the carrier web 14 is secured to the base panel 10 or cover panel 11 by a securing element 42 comprising a cylindrical rod, which has a larger diameter than that of the cylindrical rod. The two end heads provided are supported. The carrier web 14 carries a metallic part with an oblong hole 43 having a short dimension that is larger than the diameter of the cylindrical rod and smaller than the diameter of the head. It is stretched by a circular hole 44 with a larger diameter than that of the head. Similarly, the base panel 10 or the opposite cover panel 11 has an oval hole 45 extended by a circular opening 46. The connection between the oval hole 45 and the circular opening 46 of the panels 10 and 11 is arranged to be a head-to-tail connection with respect to the connection between the oval hole 43 and the circular opening 44 provided in the carrier web 14. . To ensure assembly, the circular openings 44, 46 held by the carrier web 14 and the base panel 10 or the cover panel 11, respectively, are aligned so that the head of the fixing element passes through the panels 10, 11 and the metal parts. Can pass through. Thereafter, the carrying web 14 slides with respect to the panels 10 and 11 to catch the cylindrical rod at the ends of the oblong holes 45 and 43.

  In the embodiment of FIGS. 21-23, the carrier web 14 has an opening through which the pin 47 is inserted so as to pass therethrough. The pin 47 has two ends, which are arranged on either side of the carrier web 14 and have a groove that cooperates with staples 48 secured in the base panel 10 or the cover panel 11. Ensure that 47 is fixed.

  In the embodiment of FIGS. 24 to 27, a wooden wedge 49 is placed on either side of the carrier web 14 and secured to the base panel 10 or cover panel 11 to wedge the carrier web 14 laterally. To do. In the embodiment shown, the plates 16a, 16b have corrugations. The wedge 49 thus has a corrugated form complementary to the corrugations of the plates 16a, 16b, thus preventing the carrier web 14 from moving in its longitudinal direction. Finally, the wedges 49 cooperate with complementary forms of cavities disposed in the carrier web 14 to prevent movement of the carrier web 14 in a direction perpendicular to the base panel 10 and the cover panel 11. There may be a protrusion 50. In the embodiment shown, the protrusion has the form of a dovetail. In another embodiment, the protrusion also protrudes above the lower plate 16b or below the upper plate 16a, thereby holding the upper plate 16a or the lower plate 16b in contact with the base panel 10 or the cover panel 11, respectively. There is also a case.

  After the carrier web 14 is secured to the cover panel 11 and the base panel 10, the thermal insulation lining can be positioned in the compartment 15 formed between the carrier webs 14. However, the order in which these steps are performed is not important. Specifically, it is also possible to assemble the heat insulating lining and the supporting web 14 in advance, and then fix the supporting web 14 to the base panel 10 and the cover panel 11. According to another embodiment, the carrier web 14 is secured to one of the base panel 10 or the cover panel 11 and then the compartment 15 formed between the carrier webs 14 is lined, for example by foam injection, and then the base. It is also possible to close the free-standing case by fixing the other of the panel 10 or the cover panel 11 to the carrier web 14.

  The techniques described above with respect to the production of free-standing cases are used to form primary and / or secondary insulation barriers for LNG tanks in, for example, land-based equipment, or floating structures such as LNG tankers or the like. May be used in various types of tanks.

  Referring to FIG. 28, a simplified drawing of the LNG tanker 70 shows a generally multi-faceted form of a fluid-sealed and thermally insulated tank 71 installed in the double hull 72 of the ship. The walls of the tank 71 are a primary fluid-tight barrier intended to contact the LNG contained in the tank, and a secondary fluid-tight barrier disposed between the primary fluid-tight barrier and the ship's double hull 72. And two insulation barriers respectively disposed between the primary fluid sealing barrier and the secondary fluid sealing barrier and between the secondary fluid sealing barrier and the double hull 72.

  In a manner known per se, the loading / unloading pipeline 73 located on the ship's upper deck is connected to a floating or port-based terminal using a suitable connector to tank the LNG load. 71 or to the tank 71.

  FIG. 28 shows an example of a floating terminal that includes a loading and unloading station 75, an underwater pipeline 76, and a land-based facility 77. The loading and unloading station 75 is a fixed offshore facility, and includes a movable arm 74 and a tower 78 that supports the movable arm 74. The movable arm 74 holds a bundle of insulated, flexible hoses 79 that can be connected to the loading and unloading pipeline 73. The orientable movable arm 74 can be adapted to any size tanker. A connecting pipe (not shown) extends inside the tower 78. The loading and unloading station 75 allows the tanker 70 to be loaded or unloaded from the land-based facility 77. This comprises a liquefied gas storage tank 80 and a connecting pipe 81 connected to a loading and unloading station 75 by an underwater pipeline 76. The underwater pipeline 76 allows the liquefied gas to move over a long distance, for example, 5 km, between the loading or unloading station 75 and the land-based facility 77, thereby allowing the LNG tanker 70 to be loaded and unloaded. It becomes possible to stay at a long distance from the middle coast.

  Pumps installed in the ship 70 are used to create the pressure required to move the liquefied gas, and / or pumps installed on land-based equipment 77, and / or loading and unloading A pump adapted to station 75 is used.

  While this invention has been described in connection with several specific embodiments, it is in no way limited thereto, but all technical equivalents of the means described, as well as combinations thereof, are within the scope of the invention. If any, include them.

  The verbs “comprise” or “contain” or “include” and their conjugations do not exclude the presence of elements or steps other than those stated in a claim. The use of the indefinite article “a” with respect to a step element does not exclude the presence of a plurality of such elements or steps, unless otherwise specified.

  In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Claims (14)

A method for producing a free-standing case (3, 7) intended to achieve thermal insulation for a fluid storage tank with a fluid-tight membrane,
Providing a base panel (10) and a cover panel (11);
-Manufacturing a plurality of carrier webs (14), for each carrier web (14),
○ placing a composite material containing a fiber reinforced plastic matrix in the mold (21);
A fixing element (22, 23, 27, 29) intended to fix the carrier web (14) to the base panel (10) and / or the cover panel (11) of the mold (21) Inserting into the interior and forming a composite material, wherein in this step the fixing element (22, 23, 27, 29) is placed in the assembly of the carrier web (14);
The base panel (10) and the cover panel (11) are spaced apart in the thickness direction of the case (3, 7) and the carrier web (14) extends in the thickness direction; (10) is inserted between the cover panel (11) and the supporting web (14) is inserted into the base panel using the fixing elements (22, 23, 27, 29). (10) and / or fixing to the cover panel (11);
Lining the plurality of compartments (15) formed between the carrier webs (14) with a thermal insulating lining. In the production of the carrier web (14),
A plurality of plates of composite material are arranged in the mold (21);
The method according to claim 1, wherein the fixing element (22, 23, 27, 29) is arranged between two adjacent plates of composite material. A free-standing case (3, 7) intended to insulate a fluid storage tank with a fluid-tight membrane,
A base panel (10) and a cover panel (11) spaced apart in the thickness direction of the case (3, 7);
A plurality of carrier webs (14) interposed between the base panel (10) and the cover panel (11) and extending in a thickness direction so as to define a plurality of compartments (15);
A thermally insulating lining extending inside the compartment (15) arranged between the carrier webs (14),
The carrier web (14) is manufactured by molding a composite material, the composite material comprising a fiber reinforced thermoplastic matrix and fixed to the base panel (10) and / or the cover panel (11). A self-supporting case (3, 7) having fixing elements (22, 23, 27, 29) which are placed in the set of carrying webs (14) in each forming step for the purpose of   The fixing elements are pointed metal rods (22) mounted in the collection of carrying webs (14), each of the metal rods (22) being the base panel (10) or the cover panel ( Case (3, 7) according to claim 3, embedded in 11).   The fixing elements are bushes (27) with threaded inner holes, each cooperating with a threaded element (28) passing through the base panel (10) or the cover panel (11). The case (3, 7) according to claim 3, which works.   The fixing element is a wooden sheet (29) placed in the collection of the carrier webs (14), and each of the wooden sheets contacts the base panel (10) or the cover panel (11). Case (3, 7) according to claim 3, fixed in contact.   The case (3, 7) according to claim 6, wherein the wooden sheet (29) is fixed in contact with the base panel or the cover panel by staples.   The fixing elements are L-shaped fixing tabs (23), wings (24) each embedded in a collection of the carrier webs (14), the base panel (10) or the cover panel (11) And a wing (25) with an opening that extends in contact with the base and allows passage of screws (26) secured to the base panel (10) or the cover panel (11). Case described (3, 7).   The load distribution plate (16a,), wherein the carrier web (14) extends along two edges of the carrier web (14) disposed facing the base panel (10) and the cover panel (11), respectively. 16b), and the fixing elements (22, 23, 27, 29) for the base panel and / or the cover panel are assembled in the load distribution plate (16a, 16b) of the carrier web (14). The case (3, 7) according to any one of claims 3 to 8, which is placed in the inside.   10. The carrier web (14) according to any one of claims 3 to 9, wherein the carrying web (14) has a plurality of corrugations, the axis of which extends perpendicular to the base panel (10) and the cover panel (11). Case (3, 7).   A heat insulation barrier (2, 6) comprising a plurality of cases (3, 7) according to any one of claims 3 to 10 arranged next to each other, and a sealing film (5, 9) leaning against said heat insulation barrier And a fluid-tight and insulated fluid storage tank.   A ship (70) for transporting fluid comprising a double hull (72) and a tank (71) according to claim 11 arranged in the double hull. .   Fluid flows from the floating or land-based storage facility (77) through the insulated pipeline (73, 79, 76, 81) to the ship's tank (71) or from the ship's tank (71). 13. A method for loading and unloading a ship (70) according to claim 12, communicated to the floating or land based storage facility (77).   13. A ship (70) according to claim 12 and insulated, arranged to connect the tank (71) installed in the ship's hull to a floating or land-based storage facility (77). Pipeline (73, 79, 76, 81) and through said insulated pipeline, from said floating or land based storage facility to said ship's tank or from said ship's tank to said floating or land based A system for moving fluid, comprising a pump for propelling the fluid to a storage facility.

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