KR20190100016A - Fluid sealed and insulated fluid storage tank - Google Patents

Abstract

The present invention relates to a fluid-tight and insulated tank (1000) for storing fluid, which is fixed to the conveying structure (25) of the second wall (2) on the one hand and on the other hand the first wall (1) 1 first band 209 fixed to the fluid sealing membrane 9, on the one hand the first spacer plate 204 fixed to the first band 209 and on the other hand the second band 207, on the one hand And a second spacer plate 202 fixed to the first band 209 and on the other hand to the second band 207, wherein the second anchor plate 206 is elastically deformed of the second anchor plate 206. Has a first pleat (210, 802).

Description

Fluid sealed and insulated fluid storage tank

The present invention relates to the field of fluid sealed and insulated tanks for the storage and / or transport of fluids such as cryogenic fluids.

Fluid sealed and insulated tanks are particularly used for the storage of liquefied natural gas (LNG), which is stored at approximately 162 degrees Celsius at atmospheric pressure.

Methane transport ship tanks are known, for example, from French patent FR-A-2798358. The methane carrying vessel has a plurality of longitudinal tank walls and a plurality of transverse tank walls. The walls of the tank have an intercalated fluid-tight double membrane with double insulating bulkheads. Tanks of this type are included in the transport structure formed by the methane transport ship hull.

When LNG is loaded and unloaded, changes in temperature and state of charge of the tank place high stress on the membrane of the tank. Similarly, during marine transport, the movement of the ship exerts significant force on the bulkheads of the tank. In order to prevent the deterioration of the fluid sealing and thermal insulation properties of the tank, the first and second fluid sealing membranes are fixed onto the conveying structure using a connecting ring at the corners between the transverse and longitudinal walls of the tank. .

Fastening the connecting ring to the conveying structure on the one hand and linking with the fluid sealing membranes on the other hand enables the stress to be transferred between the membranes and the ship hull, thereby strengthening the overall structure of the tank.

The connecting ring makes it possible to take in particular the thermal contraction of the metal elements forming the fluid tight bulkhead, the deformation of the hull in the ocean, and the tension resulting from the state of charge of the tank. Possible structures in the connecting ring are described in more detail in French application FR-A-2549575.

In this case, the connecting ring is connected to the carrying structure by two second bands and two first bands. Each of the first and second bands is welded to a flange fixed to the conveying structure of the transverse wall or to the conveying structure of the longitudinal wall.

The second band welded to the longitudinal wall is connected to the connecting ring via welding, for example achieved by seam welding.

Small positional tolerances for such welding create manufacturing difficulties at the manufacturing site. Moreover, such welding suffers from fatigue stress when the longitudinal wall of the tank is deformed because of the beam effect of the vessel. It also suffers from fatigue stress due to overall stress at the membrane due to thermal changes and deformation of the vessel.

One concept supporting the present invention is to provide a configuration of the wall of the tank adjacent to the junction between two walls forming an edge, thereby limiting the fatigue stress at the weld, in particular the second into the connecting ring. It is to be able to limit the fatigue stress at the weld of the band.

According to one embodiment, a fluid-tight and insulated fluid storage tank, wherein the tank comprises a plurality of walls, each wall including a transport structure in a thickness direction, a second insulating partition wall fixed to the transport structure, the transport structure. A fluid-sealed and insulated tank comprising a second fluid-sealed membrane in parallel, a first adiabatic bulkhead, and a first fluid-sealed membrane designed to contact a fluid contained in the tank and parallel to the conveying structure; A joint between the walls and an anchoring device that enables anchoring of the second fluid sealing membrane and the first fluid sealing membrane to the transport structure of each wall, the anchor device comprising:

A first band secured to the conveying structure of the second wall on the one hand and fixed to the first fluid seal membrane of the first wall on the other hand, the first fluid sealing membrane of the second wall on the first band and A first band, to which the second fluid sealing membrane is fixed;

A second band fixed on one hand to the conveying structure of the second wall and on the other hand to the second fluid sealing membrane of the first wall;

A first spacer plate fixed to the first band on the one hand and fixed to the second band on the other hand and extending into an extension of the first fluid sealing membrane of the second wall;

A second spacer plate fixed to the first band on the one hand and fixed to the second band on the other hand and extending into an extension of the second fluid sealing membrane of the second wall;

A first anchor plate fixed on the one hand to the conveying structure of the first wall and on the other hand to the second band; And,

A second anchor plate fixed to the conveying structure of the first wall on the one hand and fixed to the second band on the other hand;

The first band, the second band, the second spacer plate and the first spacer plate together form a connecting beam of parallelepiped cross section,

The second anchor plate is fixed to the second band by the welding portion,

The first anchor plate extends with an extension of the first fluid sealing membrane and the first spacer plate of the second wall,

The second anchor plate extends with an extension of the second fluid sealing membrane and the second spacer plate of the second wall,

The second anchor plate has a first corrugation that allows elastic deformation of the second anchor plate.

By these properties, the pleats allow elastic deformation of the first second spacer plate, which makes it possible to absorb deformation of the conveying structure of the wall and thus is applied to the weld of the first second spacer plate on the second band. You can limit your stress. The corrugation also allows to enlarge the positional tolerance of the weld of the first second spacer plate on the second band.

According to embodiments, this type of tank may include one or more of the following characteristics.

According to one embodiment, the second anchor plate further comprises a second corrugation, wherein the first and second corrugations protrude in opposite directions.

By these properties, the capacity of the elongation through the opening of the pleats of the first anchor plate and the shortening through the closure of the pleats are improved. Moreover, the first corrugation enhances the elastic deformation under bending of the second anchor plate in one direction, and the second corrugation increases the elastic deformation under bending of the second anchor plate in the other direction.

According to one embodiment, the second anchor plate comprises two metal sheets next to each other and the metal sheets comprise first and second corrugations, respectively.

By this property, the pleats allow elastic deformation in the compression of the second anchor plate.

According to one embodiment, the first anchor plate has a pleat that allows elastic deformation of the first anchor plate.

According to one embodiment, the second spacer plate and the first spacer plate extend parallel to the second wall, and the first band and the second band extend parallel to the first wall.

According to one embodiment, the first wall and the second wall meet at an edge and the crease or creases extend parallel to the edge.

According to one embodiment, the first band and / or the second band are continuous metal sheets.

According to one embodiment, the first band is fixed to the conveying structure of the second wall by a first anchor flange fixed to the conveying structure of the second wall.

According to one embodiment, the second band is fixed to the conveying structure of the second wall by a second anchor flange fixed to the conveying structure of the second wall.

According to one embodiment, the space formed between the second anchor plate, the second band, the first wall and the second wall is filled with a flexible insulating material and the first corrugation protrudes on the flexible insulating side.

By these characteristics, the pleats project into spaces filled with flexible insulating material, which do not require any other configuration for the accommodation of the pleats.

According to one embodiment, the connection beam is constructed from any other material or Invar® sheet with a low coefficient of expansion.

According to one embodiment, the conveying structure of the first wall is the longitudinal wall of the vessel and the conveying structure of the second wall is the transverse wall of the vessel.

By these characteristics, the orientation of the second band is determined to take the bending stress of the longitudinal wall of the ship corresponding to the beam stress of the ship.

According to one embodiment, the first wall and the second wall are joined at an edge, and the second insulating partition wall is formed in the space formed between the second anchor plate, the first anchor plate, the second band and the first wall of the tank. An upper insulating element, an intermediate insulating element, and a lower insulating element, in the thickness direction of the first wall from the inside to the outside thereof, wherein the intermediate insulating element is circumferentially parallel to the edge than the upper insulating element and the lower insulating element. There is more flexibility for bending at.

By these properties it is linked to local deformation in the first wall, for example deformation between stringers, which may be due to the pressure of water in the ballast or the movement of the vessel. The tension applied to the first anchor plate and the second anchor plate through the deformation effect of the first wall, which may be or in the case of a longitudinal wall, in particular in connection with the beam effect of the ship, Limited by deformation under bending of the intermediate insulating element. The stress on the weld between the anchor plate and the second band is thus reduced. Moreover, the intermediate insulating element can act as a shock absorber.

According to one embodiment, the intermediate element comprises slots extending in a plane transverse to the edge from the bottom or top of the intermediate element in a manner that increases flexibility under the bending of the intermediate element in a direction perpendicular to the first wall. Insulation element. The upper end is defined as the end of the intermediate element furthest from the first wall and the lower end is defined as the end of the intermediate element closest to the first wall.

Tanks of this type can form part of onshore storage facilities for storing LNG, for example, or can be installed in flotation structures in onshore or offshore sea water, in particular ethane or methane carrier ships, flotation storage and retrieval. Floating storage and regasification unit (FSRU), floating production, storage and offloading unit (FPSO) and others. In the case of a flotation structure, the tank may be intended to contain liquefied natural gas which serves as fuel for the propulsion of the flotation structure.

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

According to one embodiment, the present invention provides a method for loading or unloading a vessel of this type, wherein the fluid is floated through a thermal insulation pipeline or from a land storage facility to a vessel of a vessel or from a vessel of a vessel. Or to a storage facility on land.

According to one embodiment, the present invention provides a system for delivering a fluid, said system comprising: an insulation pipeline configured to connect said vessel, a tank installed on the hull of a vessel, to a flotation or onshore storage facility, and an insulation pipe; A pump for driving fluid flow through the line from the flotation or onshore storage facility to the vessel of the ship or from the ship's tank to the flotation or onshore storage facility.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be better understood from the following description of a plurality of specific embodiments of the present invention, given by way of example only and without limitation, with reference to the accompanying drawings, in which other objects, details, features and advantages will become more apparent. .
1 is a partial cutaway perspective view of a fluid tightly insulated tank in accordance with an embodiment of the present invention, at a junction between two walls;
FIG. 2 is a cross-sectional view of the junction between the two walls of the fluid tightly insulated tank of FIG. 1. FIG.
3 is a perspective view of the connection beam of the tank of FIG. 2;
4 is a partial cross-sectional view of the anchoring device of the tank of FIG. 2.
5 is a partial cross-sectional view of the first band of the anchor device of the tank of FIG. 2.
6 is a cross-sectional view of the second anchor plate of the anchoring device of the tank of FIG.
8 is a partial cross-sectional view of another example of an anchor device according to an embodiment of the present invention.
9 is a cut schematic diagram of a methane carrying vessel tank and terminal for loading / unloading the tank according to the invention.
10 is a perspective view of a vessel including a plurality of tanks.
11 is a perspective view of an intermediate insulation element.

FIG. 10 shows a vessel 70, for example showing a methane-carrier vessel comprising a plurality of tanks 1000.

This type of vessel 70 includes a hull 50 forming a conveying structure (shown in broken lines in FIG. 10) for a plurality of tanks 1000 (shown in continuous lines in FIG. 10).

The tank 1000 included in the conveying structure 50 has a polyhedron form. More specifically, the tank 1000 comprises a longitudinal bottom wall 1a, a longitudinal top wall 1b, two longitudinal side walls 1c and chamfered up and down longitudinal walls 1d. .

The overall structure of this type of tank 1000 is well known. Thus, if all the walls of the tank can have a similar overall structure, only one area of the tank will be described.

With reference to FIG. 1, a description is given of a multilayer structure for the wall 1 of a fluid tightly insulated tank according to one embodiment. The wall 1 of the tank is insulated from the outside inward in the thickness direction of the tank, the second insulated bulkhead 6 lying against the conveying structure 5, the second fluid sealed membrane 7, the first insulated bulkhead. (8) and a fluid sealed first membrane 9, designed to be in contact with the fluid stored in the tank.

The insulated first bulkhead 8 and the insulated second bulkhead 6 are each constructed from insulating elements, and more specifically, parallelepipedal heat-insulating caissons 10 juxtaposed in a regular pattern. It is constructed from. Different techniques are known for producing this type of insulation elements. For example, each heat insulating caisson 10 includes a bottom panel 11 and a cover panel 12. The lateral panel 13 and the internal web 14 extend between the bottom panel 11 and the cover panel 12 in the thickness direction of the tank wall. The bottom panel 11 and the cover panel 12 and the inner web 14 define a space, in which heat insulating packing is arranged, for example glass wool. , Polymer foams, expanded perlite, and the like. Each insulation box 10 is held by anchoring members on the retaining structures 5, 25, which can be manufactured in various ways according to known techniques, for example in French application FR 2973089. It may be manufactured as described in. The thermal insulation boxes 10 of the insulated first partition 8 and of the insulated second partition 6 hold the first membrane 9 and the second membrane 7, respectively.

The second membrane 7 and the first membrane 9 are constructed from a series of metal plates parallel to the folded edges, for example referred to as a strike 15, which are elongated weld supports 16. Are alternately placed. Strike 15 and weld support 16 are made from an alloy with a low coefficient of expansion. Host rake (15) and welding the support 16 is for example made of Invar®, that is, an expansion coefficient of 1.2.10 typically ^-6 to 2.10 ^-6 K ^- or made from an alloy of iron and nickel between the ^first Or, made from an alloy of iron with a high content of manganese, the expansion coefficient of the alloy of iron being typically on the order of ^7.10-6 K ^{- 1} . The second membrane 7 and the first membrane 9 typically have a thickness of between 0.5 and 1.5 mm, preferably of 0.7 mm.

Strikes 15 comprise flat central bands that lie against the cover panel 12 of the thermal insulation box 10 and the folded lateral edges in the direction of the width. Folded edges extend substantially perpendicular to the flat center band. The folded edges of the strike 15 are welded to seal the weld supports 16. The weld supports 16 are in each case accommodated in grooves of the inverted T or J shape, for example provided in the cover panel 12 of the thermal insulation box 10, thereby laying the insulating thermal barriers 6, 8 below. Is maintained on the phase. Further details on embodiments of this type of membrane can be found in French application FR 2968284.

2 is a cross-sectional view of the area of the junction 100 between the first wall 1 (extending in the yz plane) and the second wall 2 (extending in the xz plane).

At the junction 100, the conveying structure 5 of the first wall 1 and the conveying structure 25 of the second wall 2 are joined at the edge 101 (extending in the z direction) and the two walls The second membrane (7,27) and the first membrane (9,29) of the (1,2) are connected by an anchoring device, on the one hand the conveying structure (5) of the first wall (1) Allow the fixing of the second membrane (7,27) and the first membrane (9,29) of the fluid seal against, and on the other hand the agent of the fluid seal against the carrier structure (25) of the second wall (2) It permits the fixing of the two membranes 7, 27 and the first membrane 9, 29.

More specifically, the second membrane 7 and the first membrane 9 of the first wall 1 are fixed at right angles to the carrier structure 25 of the second wall 2. Similarly, the second membrane 27 and the first membrane 29 of the second wall 2 are fixed at right angles to the conveying structure 5 of the first wall 1.

The anchor device makes it possible to take the tension resulting from the heat shrinkage of the second membranes 7, 27 and the first membranes 9, 29. The anchor device also makes it possible to take the stresses resulting from the deformation of the hull, in particular the stresses resulting from the bending of the longitudinal wall of the ship corresponding to the beam effect of the ship.

The anchor device comprises a first band (209), a second band (207), a second spacer plate (202), a first spacer plate (204), a second anchor plate (206) and a first Anchor plate (208).

Like the fluid sealing membrane, the first band 209, the second band 207, the second spacer plate 202, the first spacer plate 204, the second anchor plate 206 and the first anchor plate 208. ) May be made of an alloy having a low coefficient of expansion, such as, for example, Invar®, i.e., an alloy of iron and nickel, with an coefficient of expansion typically between 1.2.10 ^-6 and 2.10 ^-6 K ^-1 either, or as an alloy of iron with high manganese content, the expansion coefficient is typically 7.10 ^-6 K ^- made of alloy of about ^1. The first band 209, the second band 207, the second spacer plate 202, the first spacer plate 204, the second anchor plate 206, and the first anchor plate 208 are typically 0.5 Has a thickness between 1.5 mm and, in the case of the second anchor plate 206 and the first anchor plate 208, preferably a thickness of 0.5 mm, the first band 209, the second band 207 , The second spacer plate 202 and the first spacer plate 204 have a thickness of 1.5 mm.

The first anchor plate 208 extends with the extension of the first spacer plate 204, and the first spacer plate itself extends with the extension of the fluid tight first membrane 29 of the second wall 2.

The second anchor plate 206 extends with the extension of the second spacer plate 202, and the second spacer plate itself extends with the extension of the fluid-sealed second membrane 27 of the second wall 2.

In particular, the fluid-tight first membrane 29 of the second wall 2 extends parallel to the second wall 2, and the first anchor plate 208 and the first spacer plate 204 are second wall. Extends parallel to (2). Similarly, the fluid sealed second membrane 27 of the second wall extends parallel to the second wall 2, and the second anchor plate 206 and the second spacer plate 202 are second wall 2. Extends parallel to).

The first band 209 extends with the extension of the fluid tight first membrane 9 of the first wall 1. The second band 207 extends with the extension of the fluid-sealed second membrane 7 of the first wall 1. In particular, when the fluid-sealed first membrane 9 and the fluid-sealed second membrane 7 of the first wall 1 extend parallel to the first wall 1, the first band 209 and the first band 209 are formed. The two bands 207 extend parallel to the first wall 1.

Referring to FIG. 3, the first band 209, the second band 207, the second spacer plate 202 and the first spacer plate 204 together form a connecting beam 17 of parallel hexahedral cross section. Form. In particular, when the first wall 1 and the second wall 2 form a right angle, the beam is of square cross section.

In the embodiment described below, the conveying structure 5 of the first wall 1 is the longitudinal wall of the vessel and the conveying structure 25 of the second wall 2 is the transverse wall of the vessel. In this configuration, the second band 207 is oriented to take tensile stress resulting from bending of the longitudinal wall of the ship corresponding to the beam effect of the ship. With this configuration, it is particularly advantageous for the second band 207 to be a continuous metal sheet in order to take up the tensile stress resulting from the bending of the longitudinal wall of the ship, which corresponds to the beam effect of the ship. Alternatively, the conveying structure 5 of the first wall 1 may be a transverse wall of the vessel and the conveying structure 25 of the second wall 2 is a longitudinal wall of the vessel. With this configuration, the second band 207 is oriented to take tensile stress parallel to the ship's transverse wall.

The first band 209 and the second band 207 can in particular be fixed around the whole of the ship's transverse wall (in this case called a complete band), or around the ship's transverse wall. It can only be fixed in part (in this case it is called a partial band).

As shown in FIG. 2, the first band 209 is fixed to the conveying structure 25 of the second wall 2 on the one hand and the fluid-tight first membrane of the first wall 1 on the other hand ( 9) is fixed. The fluidically sealed first membrane 9 can be particularly secured to the first band 209 via a flat longitudinal edge welded sealably on the first band 209, such that the first band 209 A row of fixing screws 491 to secure the to the thermal insulation box 81. The first band 209 can be fixed to the conveying structure 25 of the second wall 2 by the first anchor flange 49, the first anchor flange of the conveying structure 25 of the second wall 2. ) Is fixed to itself. The first anchor flange 49 may be fastened to the first band 209, in particular through a flat longitudinal edge welded to the first band 209 to be sealed, so that the first band 209 is insulated from the box 2623. Cover rows of fastening screws) As shown in FIG. 2, the first anchor flange 49 is connected to the second wall 2 by means of a first anchor bar 529 which is self-welded to the conveying structure 25 of the second wall 2. It can be fixed to the carrying structure 25 of the).

The second band 207 is fixed on the one hand to the conveying structure 25 of the second wall 2 and on the other hand to the fluid-sealed second membrane 7 of the first wall 1. In particular, the second band 207 is fixed to the conveying structure 25 of the second wall 2 by means of a second anchor flange 47 which is self-fixed to the conveying structure 25 of the second wall 2. Can be. The second band 207 can in particular be welded against the conveying structure 25 and the second anchor flange 47. As shown in FIG. 2, by means of a second anchor bar 527 self-welded to the conveying structure 25 of the second wall 2, the second anchor flange 47 conveys the second wall 2. It may be secured to the structure 25.

The first anchor bar 529 and the second anchor bar 527 of the second wall have a thickness between 6 and 12 mm and preferably have a thickness of 8 mm.

The first band 209 and the second band 207 are parallel to the first wall 1. Thus, their orientation is defined to take a tensile stress parallel to the conveying structure 5 of the first wall 1. In order to impart the necessary robustness to take a tensile stress parallel to the conveying structure 5 of the first wall 1, the first band 209 and / or the second band 207 are in particular a continuous metal sheet. Can be.

The fluidically sealed first membrane 29 and the second membrane 27 of the second wall 2 are secured to the first band 209. In particular, by means of a first fin 39 fixed to the first band 209 on the one hand and to the fluid-tight first membrane 29 of the second wall 2 on the other hand, the second wall The fluidically sealed first membrane 29 of (2) may be secured to the first band 209. For that purpose, the first fin 39, on the one hand, may have a longitudinal curved edge 391, hermetically welded to the first band 209, and on the other hand a flat longitudinal edge ( 392, the fluidically sealed first membrane 29 is hermetically welded to the flat longitudinal edge 392, covering a row of set screws.

Similarly, a fluid sealed second membrane 27 of the second wall 2 may be secured to the first band 209 by a second pin 37 identical to the first pin 39. In particular, the second fin 37 on the one hand may have a longitudinal curved edge 371 welded to the first band 209 and on the other hand a flat longitudinal edge 372. And a fluidically sealed second membrane 27 is hermetically welded to the flat longitudinal edge 372 to cover the row of fastening screws.

The second anchor plate 206 is fixed to the conveying structure 5 of the first wall 1 on the one hand and to the second band 207 on the other hand. As shown in FIG. 4, the second anchor plate 206 is secured to the second band 207 by welding 102. In particular, the second anchor plate 206 may have a longitudinal edge 2061, which is curved at right angles and secured to the second band 207 through fluid tight welding. As shown in FIG. 2, the second anchor plate 206 may be secured to the carrying structure 5 of the first wall 1 by a second anchor bar 506.

The first anchor plate 208 is fixed on the one hand to the conveying structure 5 of the first wall 1 and on the other hand to the second band 207. In particular, the first anchor plate 208 can be secured to the second band 207 by an intermediate fin 58. In particular, the intermediate pin 58 may have a longitudinal edge 591 on the one hand and a flat longitudinal edge 582 on the other hand, the longitudinal edge being curved at right angles and fluidically sealed weld 103 Fixed to the second band 207, the first anchor plate 208 is hermetically welded to a flat longitudinal edge 582, covering a row of fastening screws. As shown in FIG. 2, the first anchor plate 208 may be secured to the carrying structure 5 of the first wall 1 by a first anchor bar 508.

The first anchor bar 508 and the second anchor bar 506 of the first wall have a thickness between 6 and 12 mm and preferably have a thickness of 8 mm.

The second spacer plate 202 is fixed to the first band 209 on the one hand and to the second band 207 on the other hand. In particular, the second spacer plate 202 may have a longitudinal edge 2021 and another longitudinal edge 2022, the longitudinal edge 2021 being curved at right angles and having a first band ( Fixed to 209, the other longitudinal edge 2022 is bent at right angles and secured to the second band 207 via fluid tight welding.

The first spacer plate 204 is fixed to the first band 209 on the one hand and to the second band 207 on the other. In particular, the first spacer plate 204 may have a longitudinal edge 2041 and another longitudinal edge 2042, the longitudinal edge 2041 being curved at right angles and through welding the first band 209. The other longitudinal edge 2042 is curved at right angles and fixed to the second band 207 through welding.

The fluid tight welds, and in particular the welds 102, can in particular be produced by seam welding.

As shown in FIG. 3, the first band 209 and the first spacer plate 204 have notches 31 at the lateral ends of the beam 17. The notch 31 allows the introduction of join kits for connecting two beams 17 arranged end-to-end.

In particular, the first band 209 does not extend from the junction with the second fin 37 and the second spacer plate 202 to the transverse end of the beam, on the side opposite the curved edges 371, 2021. .

As shown in FIGS. 3 and 4, the compact reinforcing angle plate 42 may be secured to the junction between the second spacer plate 202 and the second band 207 and may be welded, for example. .

5 shows the welding of the curved edges of the second spacer plate 202 and the second fin 37 on the first band 209 in an enlarged manner. All fluid tight welds of curved edges can be achieved in the same way.

As shown in FIGS. 3 and 5, the compact reinforcement plate 41 may be fixed in part to the second pin 37 and partly to the second spacer plate 202 in the notch 31, For example, it can be welded. As shown in FIG. 6, the second anchor plate 206 has a first corrugation 210. The pleats 210 may be elastically deformed to fold or unfold. The pleats 210 allow elastic deformation of the second anchor plate 206, which can absorb deformation of the transport structure 5 of the first wall 1 or deformation of the membranes 27, 29. Thus, it is possible to limit the stress applied at the weld 102. The first corrugation 210 also allows to enlarge the positioning tolerance of the weld 102 of the second anchor plate in the second band.

In particular, the pleats 210 may extend (in the z direction) along an axis parallel to the edge 101. Pleat 210 thus permits elastic deformation in bending and / or stretching of second anchor plate 206. In particular, the pleats 210 make it possible to absorb deformations of the membranes 27, 29 due to ship movement and thermal changes. When the conveying structure 5 of the first wall 1 is the longitudinal wall of the ship, the corrugations 210 make it possible to absorb deformation under bending of the longitudinal wall of the ship corresponding to the beam effect of the ship. As an example, to impart sufficient flexibility to limit maximum stress, the pleats have a radius of curvature between approximately 2 mm and 10 mm. When two creases are present, a radius of curvature between approximately 2 mm and 5 mm will be desirable.

The space formed between the second anchor plate 206, the second band 209, the first wall 5, the second wall 25 may be filled with a flexible insulating material 220, for example, glass. Material constructed from glass wool or rock wool may be filled. Thus, when the crease 210 protrudes from the side of the flexible insulator 220, it may be buried with the flexible insulator, which allows for inclusion of the crease without further specific configurations.

The second anchor plate 206 may further have second corrugations 212, 804 extending along an axis parallel to the edge 101. The second pleats 212, 804 are the same as the first pleats described above and the effect thereof is to increase the deformation capacity of the second anchor plate 206.

Referring to FIG. 8, the second anchor plate 206 may be constructed from a single metal sheet in which two corrugations are made. Thus, the dose of elongation through shortening of the pleats of the second anchor plate and opening of the pleats is improved.

In particular, the first wrinkles 210 and the second wrinkles 212 may protrude in opposite directions. Thus, the first pleats 210 allow elastic deformation under bending of the spacer plate 206 in one direction, and the second pleats 212 allow elastic deformation under bending of the spacer plate in another direction. Alternatively, the first pleats 210 and the second pleats 212 may protrude in the same direction. Thus, the first pleats 210 and the second pleats 804 allow for greater elastic deformation under bending of the spacer plate 206 in one direction.

Referring to FIG. 7, the second anchor plate 206 may include two metal sheets 801, 803, which are parallel to each other and have a first corrugation 802 and a second corrugation 804, respectively. It includes. In particular, the corrugations 802, 804 may protrude in opposite directions and extend away from each other. The protrusions 802, 804 thus allow elastic deformation in the elongation and compression of the second anchor plate 206, which makes it possible to damp the deformation of the conveying structure 5 of the first wall 1. do.

The first anchor plate 208 may have one or more pleat (s) 211, allowing elastic deformation of the first anchor plate 208. The crease or creases 211 are the same as the crease 210 described above. These allow elastic deformation of the first anchor plate 208, which makes it possible to absorb deformation of the carrying structure and thus limit the stress on the weld 103.

At the junction 100 between the two walls 1, 2, as can be seen in FIG. 2, the first thermal insulation barriers 8, 28 and the second thermal insulation barriers 6, 26 are It is formed from a plurality of heat insulating elements which can be configured in different ways.

The fixing screws mentioned above serve in each case to fix the elements forming the connection beam 17 to the insulating elements.

In particular, the second insulating partition wall 6 of the first wall 1 is a thermal insulation box 10 of the second insulating partition wall 6, a first anchor plate 208, a second fluid-sealed membrane 7, conveying It may comprise a thermal insulation box 61 in the space formed between the structures (5). The second band 207 is fixed to the thermal insulation box 61 by fastening screws covered by the fluid tightly sealed second membrane 7.

Similarly, the second insulating bulkhead 26 of the second wall 2 is a thermal insulation box 10, a first band 209, a second fin 37, a transport structure of the second insulating bulkhead 26. An insulation box 261 may be included in the space formed between the 25. The second pin 37 may be secured to the thermal insulation box 261 by fixing screws covered by the second fluidly sealed membrane 27.

Moreover, the 1st heat insulation partition 8 of the 1st wall 1 is the heat insulation box 10 of the 1st heat insulation partition 8, the 1st spacer plate 204, the 2nd band 207, and the 1st band. The insulation box 81 may be included in the space formed between the 209. The second band 209 can in particular be secured to the thermal insulation box 81 by means of fixing screws covered by the first membrane 9 which is fluidically sealed.

Similarly, the first thermal insulation partition wall 28 of the second wall 2 may include the thermal insulation box 10, the second band 209, the first fin 39, and the first thermal insulation partition wall 28 of the first thermal insulation partition wall 28. An insulation box 281 may be included in the space formed between the two fins 37. The first pin 39 is secured to the thermal insulation box 281 by fastening screws covered by the fluid tight first membrane 29.

The second insulating partition walls 6 and 26 are spaces formed between the transport structure 5 of the first wall 1, the second band 209, the first anchor plate 208, and the second anchor plate 206. In the thickness direction of the first wall 1 from the inside of the tank to the outside, it may comprise an upper insulation element 232, an intermediate insulation element 231, and a lower insulation element 230. 231 is more flexible in bending in the direction perpendicular to the first wall 1 than the upper thermal insulation element 232 and the lower thermal insulation element 230. The deformation of the first wall 1, and in particular of the local deformation of the first wall 1, is absorbed by the second heat insulation through the deformation under bending of the intermediate heat insulation element 231.

The upper insulation element 232 and the lower insulation element 230 may be a particularly hard wooden case. The intermediate insulating element 231 is made of a more flexible material under bending, such as reinforced polyurethane foam. Moreover, the intermediate element 231 has rigidity in compression, which allows it to withstand the weight of the upper element 232. As shown in FIG. 11, the intermediate element 231 may include slots 2311, which is transverse to the edge 101 (ie, extends in the xy plane) and the bottom of the intermediate element 231. Or extending from an upper end, where the upper end is defined as the end of the intermediate element 231 furthest from the first wall, and the lower end is defined as the end of the intermediate element 231 closest to the first wall 1. Slots 2311 are distributed along the direction z of the edge. The length of the slot extends in the direction y. The depth of the slot extends in the direction x. The extension of the slot extends in the plane (x, y) perpendicular to the direction z of the edge. The slot 2311 provides flexibility under bending in the direction x perpendicular to the first wall 1. Slots 2311 may in particular extend from the lower end and from the upper end of intermediate element 231 as shown in FIG. 11.

The second insulating partition wall 26 of the second wall is in a space formed between the carrier structure 25, the second band 209, the second spacer plate 202, and the second band 207 of the second wall. In the thickness direction of the second wall 2 from the inside of the tank to the outside, it may comprise an overlap of three thermal insulation boxes 2621, 2622, 2623. The second band 209 is fixed to the thermal insulation box 2623 by fixing screws covered by the first anchor flange 49.

Moreover, the first insulating partition wall 8, 28 has a thermal insulation box 288 in a space formed between the second band 209, the second band 207, the second spacer plate 202, and the first spacer plate 204. ) May be included. With reference to FIG. 9, a cutaway view of the methane carrying vessel 1070 shows a fluid tightly insulated and insulated tank 1071 in the form of a prismatic pole, which is mounted to the double hull 1072 of the vessel. The wall of the tank 1071 is the first bulkhead of the fluid seal intended to contact the LNG contained in the tank, the second bulkhead of the fluid seal disposed between the double hull 1072 of the vessel and the first fluid tightly sealed bulkhead. And two insulating partitions each disposed between the first partition of the fluid seal and the second partition of the fluid seal and between the second partition of the fluid seal and the double hull 1072.

In a known manner, the loading / unloading pipes 1073 disposed on the upper deck of the ship may be connected to the sea or port terminal by appropriate connectors to transport LNG cargo from or to the tank 1071. have.

FIG. 9 shows an example of an offsheore terminal that includes a loading and unloading station 1075, an underwater pipeline 1076, and an onshore facility 1077. The loading and unloading station 1075 is a fixed offshore installation comprising a mobile arm 1074 and a tower 1078 supporting the mobile arm 1074. The moving arm 1074 maintains a bundle of insulated flexible hoses 1079 that can be connected to the loading / unloading pipeline 1073. Mobile arms 1074 that can be oriented can be adapted to methane carriers of all sizes. A connection pipe (not shown) extends inside the tower 1078. The loading and unloading station 1075 allows the methane carrier 1070 to load and unload from or to the land installation 1077. It includes a liquefied gas storage tank 1080 and connecting pipes 1081 connected to the loading or unloading station 1075 by an underwater pipeline 1076. The underwater pipeline 1076 allows the transfer of liquefied gas between the loading or unloading station 1075 and the land installation 1077 over a long distance, for example 5 km, which load and unload operation. While the methane carrying vessel 1070 can be maintained at a distance from the shore.

Pumps provided in the loading and unloading station 1075 and / or pumps provided on the land installation 1077 and / or pumps mounted on the vessel 1070 are used to generate the pressure necessary for the delivery of the liquefied gas.

Although the present invention has been described in connection with some specific embodiments, the present invention is not limited thereto, and the present invention includes all technical equivalent means described herein, and combinations thereof within the scope of the present invention. This includes them.

The use of the terms "comprising" or "comprising" and the use of their forms of use do not exclude the presence of steps or components that are not described in the claims. The use of an indefinite article on an element or step does not exclude the presence of a plurality of such elements or steps unless stated otherwise.

1. Wall 5. Carrying Structure
6. Second bulkhead 7. Second membrane
50. Hull 70. Ship

Claims (15)

A fluid sealed and insulated fluid storage tank (1000), the tank comprising: a plurality of walls (1,2), each wall (1,2) comprising conveying structures (5,25) in a thickness direction Second adiabatic barriers 6, 26 fixed to the structures 5, 25, second fluid sealing membranes 7, 27 parallel to the conveying structures 5, 25, first adiabatic barriers 8, 28, and A first fluid sealing membrane 9, 29 parallel to the conveying structure 5, 25 and designed to contact the fluid contained in the tank,
The fluid-sealed and insulated tank 1000 comprises a junction 100 between the first wall 1 and the second wall 2, and a second fluid sealing membrane 7, 27 and a first fluid sealing membrane 9. And 29, an anchoring device which enables to anchor the conveying structure 5, 25 of each wall 1, 2, said anchoring device comprising:
As a first band (209) fixed on the one hand to the conveying structure (25) of the second wall (2) and on the other hand to the first fluid sealing membrane (9) of the first wall (1), said A first band 209 to which the first fluid sealing membrane 27 and the second fluid sealing membrane 27 of the second wall 2 are fixed to the first band;
A second band 207, fixed on the one hand to the conveying structure 25 of the second wall 2, and on the other hand to the second fluid sealing membrane 7 of the first wall 1;
A first spacer plate, which is fixed to the first band 209 on the one hand and to the second band 207 on the other hand, and which extends with an extension of the first fluid sealing membrane 29 of the second wall. , 204);
The second spacer plate 202, which is fixed to the first band 209 on the one hand and to the second band 207 on the other hand, extends in the extension of the second fluid sealing membrane 27 of the second wall. ;
A first anchor plate 208 fixed on the one hand to the conveying structure 5 of the first wall 1 and on the other hand to the second band 207; And,
A second anchor plate 206 fixed on the one hand to the conveying structure 5 of the first wall 1 and on the other hand to the second band 207.
The first band 209, the second band 207, the second spacer plate 202 and the first spacer plate 204 together form a connecting beam 17 of parallel hexahedral cross section,
The second anchor plate 206 is fixed to the second band 207 by the welding portion 102,
The first anchor plate 208 extends with an extension of the first fluid sealing membrane 29 and the first spacer plate 204 of the second wall 2,
The second anchor plate 206 extends with the extension of the second fluid sealing membrane 27 and the second spacer plate 202 of the second wall 2,
The second anchor plate (206) has a first pleat (210, 802) to allow elastic deformation of the second anchor plate (206). 2. The second anchor plate 206 further comprises second corrugations 212 and 804, wherein the first corrugations 210 and 802 and the second corrugations 212 and 804 are second. A tank for storing fluid, which projects in opposite directions with respect to the anchor plate (206). 3. The second anchor plate 206 has two metal sheets 801 and 803 parallel to each other, each of which has a first corrugation 802 and a second corrugation 804. Tank for fluid storage. The tank for fluid storage according to any one of claims 1 to 3, wherein the first anchor plate (208) has a pleat (211) to allow elastic deformation of the first anchor plate (208). 5. The second spacer plate 202 and the first spacer plate 204 extend parallel to the second wall 2, and the first band 209 and the second. The band (207) extends parallel to the first wall (1). 6. The conveying structure 5 of the first wall 1 and the conveying structure 25 of the second wall 2 are joined at an edge 101. 2 The crease or creases (210, 212, 802, 804) of the anchor plate (206) extend parallel to the edge (101). The method according to any one of claims 1 to 6, wherein the first band 209 is formed as a single member by a continuous first metal sheet, and the second band 207 is single by a continuous second metal sheet. A fluid storage tank, formed as a member. The method according to any one of claims 1 to 7,
The first band 209 is fixed to the carrying structure 25 of the second wall 2 by a first anchor flange 49 fixed to the carrying structure 25 of the second wall 2. ,
The second band 207 is fluid storage, which is fixed to the transport structure 25 of the second wall 2 by a second anchor flange 47 fixed to the transport structure 25 of the second wall 2. For the tank. The space formed between the second anchor plate 206, the second band 207, the first wall 5 and the second wall 25 is a flexible insulating material (10). 220, and the first corrugation (210) of the second anchor plate (206) protrudes on the flexible thermal insulation (220) side. 10. Tank for fluid storage according to any one of the preceding claims, wherein the connection beam (17) consists of a sheet of metal made from a metal having a low coefficient of expansion. The carrier structure (5) of claim 1, wherein the carrier structure (5) of the first wall (1) and the carrier structure (25) of the second wall (2) are joined at an edge (101),
The second insulating partition wall 6 of the first wall 1 may include a second anchor plate 206, a first anchor plate 208, a second band 207, and a transport structure of the first wall 1 ( 5) in the space formed between
In the thickness direction of the first wall 1 from the inside of the tank to the outside, comprising an upper insulation element 232, an intermediate insulation element 231, and a lower insulation element 230,
The intermediate thermal insulation element (231) is more flexible to bending in a direction perpendicular to the first wall (1) than the upper thermal insulation element (232) and the lower thermal insulation element (230). 12. The intermediate element 231 is an insulating element comprising a slot 2311, the length and depth of each slot 2311 extending in a plane xy transverse to the edge 101, The depth of each slot 2311 extends from the bottom or top of the intermediate element 231 in a manner that increases flexibility under the bending of the intermediate element 231 in the direction x perpendicular to the first wall 1. Tank for storing fluid. 13. A fluid transport vessel (70) comprising a hull (72) and a fluid storage tank (71) according to any one of claims 1 to 12, wherein the hull carries the tank. A fluid transport vessel (70) constituting the structures (5, 25). 14. A method for loading or unloading a vessel 70 according to claim 13, wherein the fluid is suspended or inland storage facility 77 via insulated pipelines 73, 79, 76, 81. A method of loading or unloading a vessel from a tank 71 of a vessel or from a tank 71 of a vessel to a flotation or onshore storage facility 77. Insulation pipelines 73, 79, 76, 81 arranged to connect the vessel 70 according to claim 13, the tank 71 installed on the hull of the vessel to a flotation or onshore storage facility 77, and an insulation pipeline A pump for driving fluid from the flotation or onshore storage facility to the ship's tank or from the ship's tank to the flotation or onshore storage facility.

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