KR20140130708A

KR20140130708A - Sealed and thermally insulating tank comprising a corner piece

Info

Publication number: KR20140130708A
Application number: KR20147026121A
Authority: KR
Inventors: 모하메드 사시; 미카엘 헤리; 세바스티엔 델라노에
Original assignee: 가즈트랑스포르 에 떼끄니가즈
Priority date: 2012-02-20
Filing date: 2013-01-28
Publication date: 2014-11-11
Also published as: FR2987099A1; KR102051363B1; FR2987099B1; CN104160201A; WO2013124556A1

Abstract

In a sealed thermal insulation tank comprising a plurality of tank walls fixed to respective support walls (2, 3) each time the support walls are paired to adjoin the corner corners (15)
The tank wall,
Insulating walls (4, 6); And
(28, 29) arranged in line with corner corners, the corner pieces comprising a first and a second support wall of two support walls defining corner corners, And a sealing wall (5, 31) comprising first and second connection flanges respectively arranged parallel to the sealing wall of the wall,
Each connecting flange is welded to a metallic element,
The corrugated piece includes a corrugated portion having a convex surface toward the support walls and the corrugated portion is bent to have an angle smaller than the acute angle of the two support walls of the corner corner, (26, 27) are formed.

Description

[0001] SEALED AND THERMALLY INSULATING TANK COMPRISING A CORNER PIECE [0002]

The present invention relates to the field of manufacturing a sealed thermal insulation tank. In particular, the invention relates to tanks for receiving cold fluid, e.g., tanks for storing and transporting liquefied gas at sea.

Hermetic thermal insulation tanks can be used in a variety of industries to store hot and cold products. For example, in the field of energy, liquefied natural gas (LNG) is a liquid that can be stored at atmospheric pressure at about-163 ° C in ground-based storage tanks or in floating tanks on the ocean.

Such a tank is disclosed in FR2813111. Such a tank includes a support structure having a surface formed in a two-sided angle in the longitudinal direction. The tank wall includes a first sealing wall having a row of corner straps on a dihedral corner. The strake includes a corrugated portion having three corrugations extending toward the inside of the tank so that it can be deformed along the transverse axis in conjunction with any deformation of the wall element supporting the first sealing wall.

However, such waveforms are bulky and susceptible to deformation as a result of fluid flow in the tank. In addition, these wavy patterns are difficult to accurately manufacture.

According to one embodiment, the present invention provides a sealed thermal insulation tank comprising a support structure having a polygonal cross-section, the support structure comprising a plurality of substantially planar support walls, Wherein the tank includes tank walls that are secured to respective support walls each time,

An insulating wall supported on a corresponding support wall,

A sealing wall comprising a metal membrane supported by an insulating wall and consisting of juxtaposed metal elements welded together in a basically sealed manner,

The sealing wall

A first connection flange disposed in line with the corner of the support structure and extending parallel to the sealing wall disposed on the first support wall of the two support walls defining the corner, A second connection flange extending parallel to the sealing wall disposed on the second support wall, each connection flange being welded to each of the metal elements of the sealing wall,

The cornice piece includes a wavy portion extending between the two connection flanges and having a convex surface facing the support structure, the wavy portion being curved so as to have a more acute angle than the angle between the two support walls defining the corner corner And the heat insulating wall has a groove arranged in line with the corner edge to receive the corrugated portion of the corner piece.

According to the present embodiment, such a tank has one or more of the following features.

According to one embodiment, the corrugated portion is formed behind the imaginary plane defined by the extension lines of the sealing walls disposed on the first and second support walls and extending to the geometric intersection of the two extension lines.

According to one embodiment, the first tank wall and the second tank wall further comprise a second sealing wall supported by the second insulation wall and the second insulation wall, wherein the first insulation wall is disposed on the second sealing wall And the second sealing wall comprises a metal membrane consisting of juxtaposed metallic elements that are welded together in a basically sealed manner and wherein the corner piece comprises a first portion of the two support walls defining a corner corner, A second connection flange extending parallel to the second sealing wall and a second connection flange extending parallel to the second sealing wall disposed on the second support wall of the two support walls defining a corner corner, The connecting flange is welded to each of the metal elements of the second sealing wall,

The corner piece includes a wavy portion extending between the two connection flanges and having a convex surface facing the support structure such that the wavy portion has a more acute angle than the angle between the two support walls defining the corner corner Bending,

The secondary insulation wall is formed with a groove arranged in line with the corner corner to receive the corrugated portion of the corner piece.

According to one embodiment, the insulating wall comprises corner lagging structures,

The corner lagging structure includes two substructures symmetrically disposed about an equally divided surface defined by the first support wall and the second support wall,

Each sub-

Lower panel,

A heat insulating layer supported by the lower panel, and

And an upper panel supported by the insulating layer,

The grooves of the insulating walls are disposed on the upper panel of the two substructures.

According to one embodiment, the top panel has an elongated shape and includes a half-groove along the longitudinal side of the top surface of the top panel.

According to one embodiment, each of the first and second insulating walls comprises a so-called corner lagging structure.

According to one embodiment, a duct for circulation of gas is formed between the lower panels of the lower structure of the first insulating wall along the corner of the support structure and the corrugated portion of the second corner piece of the second sealing wall.

According to one embodiment, each corner substructure extends from the equi-split surface to the outer surface of the substructure, the outer surface is provided parallel to the corner of the support structure, and the first substructure and the second substructure, 2 The outer surface of the substructure meets on the same plane.

According to one embodiment, the outer surfaces of the first and second substructures are perpendicular to the sealing walls arranged in series in the substructure.

According to one embodiment, the metal elements are thin plates of low expansion coefficient parallel to the longitudinal edges bent towards the inside of the tank, and the sealing walls are mechanically retained on the insulating walls, but welded alternately with metal struts Wherein the welded supports further comprise a plurality of metal struts and bent edges adjacent to the two metal struts are each welded to two sides of a welded support positioned between the metal struts and wherein the bent and parallel longitudinal edges of the metal struts and the welded supports Is substantially parallel to the corner of the support structure.

According to one embodiment, the welded joint forms bellows which are deformable in a direction perpendicular to the corner of the support structure between the welded support and the two metal struts welded to the welded support, and the corner of the sealing wall The piece has a strength that is less than or equal to the strength of the welded joints adjacent the corner corner in a direction perpendicular to the corner corner.

According to one embodiment, the insulating wall further comprises lagging elements in the form of parallelepiped shapes adjacent to the corner lagging structures, wherein the connecting flanges of the corner pieces are welded to the metal elements above the lagging elements in a parallelepiped shape.

According to one embodiment, the third support wall of the support structure interrupts the corner corner 15 defined by the first and second support walls, and the sealing wall includes a corner piece disposed along the corner of the support structure And the stationary structure comprises a rigid fixture piece disposed in a continuous line of the corner piece, the stationary piece being parallel to the sealing wall disposed on the first support wall And a second stop flange extending parallel to the sealing wall disposed on the second support wall,

The stationary piece includes a wavy portion extending between the two stationary planes and having a convex surface in a direction toward the support structure and the wavy portion is defined between two support walls defining an edge corner to receive the corrugated portion of the corner piece The connecting flanges of the corner pieces and the corrugated portion of the corner pieces are welded to the corrugated portion of the stationary flange and the stationary piece respectively so as to be sealed between the stationary structure and the corner piece and the stationary piece is welded to the corners And is fixed to the third support wall so as to absorb the load in the longitudinal direction of the corner.

According to one embodiment, the third support wall supports a tank wall comprising a sealing wall, the stop structure having a plate extending parallel to the third support wall, the plate being connected in a sealing manner to a rigid stationary piece And the sealing wall of the third tank is welded to the plate in a sealing manner.

Such tanks may, for example, form part of a ground storage facility for storing LNG, or may be constructed of floating structures on the shore or deep water, in particular methane tankers, gas storage / regasification units (FSRU) A cargo handling facility (FPSO) or the like.

According to one embodiment, a vessel for conveying a cold liquid product includes a double hull and the aforementioned tank disposed in a double hull.

According to one embodiment, the present invention also provides a method for loading or unloading such a vessel, a method for conveying a cold liquid product between a floating or ground storage facility and a tank of a ship through an insulated pipe.

According to one embodiment, the present invention provides a system for conveying a cold liquid product, the system comprising an insulated pipe designed to connect a vessel installed on the hull of the vessel to the vessel, floating storage or ground storage facility described above And a pump for flowing the cold liquid product between the floating storage facility or the ground storage facility and the vessel vessel through the insulating pipe.

The invention in accordance with the invention is based on the observation that in enclosed thermal insulation tanks containing a number of tank walls that support against the planar support surfaces encountered at the corner corners, when the tank is filled with fluid and when the fluid flows inside the tank, Lt; / RTI >

One aspect of the present invention is to provide a method of forming a trough in the bottom of a sealing wall to prevent wavy deformation from occurring in a deformable wavy shape, a convex surface facing outwardly of the tank, The connection points of the sealing walls of each of the two tanks arranged on one side of the corner corner using a corner piece with an extended wavy portion are made, To absorb the stress at the end of the pipe.

The aspect of the present invention begins with the idea that this connection can be achieved by making a corner piece that is not bulky and can be made simple.

Aspects of the present invention begin with an idea for accommodating a wavy shape in a groove in an insulating wall so as to prevent deformation.

An aspect of the present invention begins with an idea of connecting the corner piece to the support structure at the end of the corner corner in a method for absorbing the load in one direction of the corner corner.

An aspect of the present invention begins with the idea of connecting a corner piece to the end of the corner corner by fixing the corner piece to the piece surrounding the shape of the corner piece to enable transmission of an excellent load at the end of the corner corner.

The present invention can be clearly understood by other objects, descriptions, features, and effects. Further, these will become more apparent by various embodiments to be described later. However, these embodiments are not to be construed as limited by the drawings and the appended reference numerals.

1 is a partial perspective view showing a part of a tank at a corner edge formed by intersection of two support walls;
Figure 2 is a partial view of two walls of a tank at an edge in Figure 1;
3 is a perspective view of a three-sided structure of a connecting ring disposed at a corner defined by three walls of the tank 1 at one end of the corner shown in Fig.
4 is a side view of the three-sided structure of FIG. 3;
Fig. 5 is a partially cut away perspective view of the tank wall of the three-sided structure of Figs. 3 and 4. Fig.
Figure 6 is a schematic view of a methane tank and a terminal for loading / unloading it into such a tank.

Figures 1 and 2 show the tank walls supported by the support structure 1.

The support structure (1) is composed of the internal walls of a double hull of a methane tanker and has a prismatic structure. More specifically, the longitudinal walls extend in parallel along the longitudinal direction of the ship, and the cross-section in the plane perpendicular to the longitudinal direction of the ship is formed in a polygonal shape. The longitudinal walls meet at the corners of the longitudinal corners.

The longitudinal support walls are interlocked in the longitudinal direction of the ship by transverse support walls 39 extending in a direction perpendicular to the longitudinal direction of the ship. The longitudinal walls and the transverse walls meet at the front and rear corner edges.

1 and 2 show a tank wall that meets at the longitudinal corner corner 15 of the support structure 1 and the support structure 1 comprises a first support wall 2 and a second support wall < RTI ID = 0.0 > 3 intersect with each other, and they form an angle of 135 [deg.].

Each of these support walls 2, 3 supports a closed thermal insulation tank wall.

By convention, "upper" refers to a case located closer to the interior of the tank, "lower" refers to a case located closer to the supporting structure 1, and the direction of the tank wall relative to the ground gravity field It is irrelevant.

Each of the tank walls is constituted by a second heat insulating wall 4 supporting the second sealing wall 5. The second sealing wall 5 itself supports the first insulating wall 6 which supports the first sealing wall 7.

It can be seen in FIGS. 1 and 2 that each of the second adiabatic wall 4 and the first adiabatic wall 6 consists of a second lagging element 8 and a first lagging element 9. The anchor member 10 allows the second lagging element 8 to remain pressed against the support structure 1. [ These anchor members are described in particular by French patent application 1162214. However, the second lagging elements may also be fixed by the anchor members disclosed in FR2887010. The anchor members 10 can be fixed to the support structure 1 by studs (not shown) welded to the support structure 1. [

The second (8) and first (9) lagging elements include slots 11 having an inverted T-shaped cross section. The slots 11 slidably receive the weld supports 12, which bend into the L-shape in the form of a metal strip. Strands 13 with bent edges are continuously welded to such a weld support 12. The joint thus formed forms a bellows which is deformable in a direction perpendicular to the weld support 13. [ Strakes 13 present on the second element form a second sealing wall 2 and the straps supported by the first element 9 form a first sealing wall. The welded supports 11 of the sealing walls 5 and 31 extending along the upper portions of the struts 13 and the walls 2 and 3 extend in parallel at the corner corner 15. [

The first fastening member (not shown) holds the first lagging elements 9 in a manner well known to the secondary insulation walls. For example, the first fixing members are disclosed in French patent application 1250214 or FR2887010.

The first (9) and second (8) lagging members are in a parallelepiped shape and form a uniform rectangular grid pattern and are disposed on the respective insulating walls (4, 6).

The second element 5 of the second adiabatic wall 8 is placed on the support walls 2, 3 through the beads of a mastic 14 forming a parallel line.

(18) and second (17) corner lagging elements are attached to the lagging elements (1) of the first support wall (2) to ensure the continuity of the first (6) and second 8 and 9 of the second support wall 3 and the lagging elements 8 and 9 of the second support wall 3 in the region of the corner edge 15.

More specifically, the corner elements 17 and 18 are respectively disposed on both sides of the equally divided surface 16 formed by the two support walls 2 and 3 for the respective insulating walls 4 and 6. In addition, the corner elements 17, 18 adjacent to each side of the equal section 16 meet at a plane 19 that coincides with the equally divided plane. Each of the corner elements 17,18 includes a lower panel 20,23 which supports a layer of insulating foams 21,24 which are themselves bonded to the upper panels 22,25 by themselves, Lt; / RTI > The corner elements 17, 18 extend parallel to the support walls 2, 3. The corner elements 17, 18 are independent of the adjacent lagging elements 8, 9.

Grooves 26 and 27 are formed in the upper panels 22 and 25 of the corner elements to permit wavy plates 28 and 29. To this end, the top panels 22, 25 of each corner element comprise cuts. These cuts are machined along the upper longitudinal edges of the top panels 22, 25 and are adjacent to the equally spaced sides 16. These cuts are provided in half-grooves. More specifically, the cut portion of the upper panel 25 of the first corner elements is formed as a planar half-groove, and may also be provided with a groove extending beyond a right angle or a right angle. The cut of the top panel 22 of the second corner elements forms a convex groove 26.

Adjacent semi-grooves of adjacent upper panels 22, 25 also form a first groove 27 and a second groove 26, respectively. The first groove 27 and the second groove 26 receive the first wavy plate 29 and the second wavy plate 28, respectively.

Each of the wavy plates (28, 29) has two flat flanges (30) extending parallel to the sealing walls (5, 31). The two flat flanges 30 are connected by a wavy portion 32. The corrugated portion 32 has a wavy shape extending into the support structure 1 in the corresponding groove 26, 27. The corrugated portion 32 of the second corner piece 28 rests on the top panel 22 inside the groove 26 and the corrugated portion of the first corner piece 29 extends from the inside of the groove 27 to the top panel 22 25).

The wavy portion 32 of the first corner piece 29 and the half-groove of the upper panel 25 of the first corner element 18 are provided in the first channel.

The wavy portion 32 of the second corner piece 28 and the half-grooves of the lower panel 23 of the first corner element 18 are provided in the second channel.

The first channel and the second channel may be deactivated, for example with nitrogen, or may receive the optical fiber to sense any flow of fluid through the sealing walls 5, 31.

The wavy portion 32 has a smaller strength than a joint present in the region of the weld support 12.

The corrugation is also defined by two planes corresponding to imaginary lines extending from the sealing walls 5, 31 disposed on the two support walls, from below the imaginary plane 60 which breaks at their intersection .

The first and second wavy plates 29 and 28 are connected to first 13 and second 31 of the sealing walls corresponding to the first and second support walls 2, Welded to the rakes in a sealed manner. More specifically, the flat flanges 30 of the wavy plates 28, 29 are welded on top of the lagging elements 8, 9 of the insulating walls 4, 6.

The use of such wavy plates 28 and 29 serves to absorb the stresses generated by the sealing walls 5 and 31, for example, the heat generated by the heat shrinkage of the lagging elements 8 and 9, Which can be achieved between the sealing walls 5, 31 disposed on each side of the equal section 16. Moreover, the corrugated portion of the corner pieces 28-29 extends from the inside of the groove toward the support structure, so that even if a load generated by the flow of the fluid in the tank is applied, it is not damaged. Further, any wavy deformation caused by the flow of the fluid can be avoided.

The wavy plates 28, 29 extend substantially along the longitudinal edge corner 15, between the front 39 and the rear support walls, all in line with the longitudinal edge corner 15. For this purpose, each of the wavy plates 28, 29 can be made of a plurality of pieces that are welded together with a unit piece or an end portion.

The transverse support walls 39 also support the tank walls. A connecting ring is used to accurately connect the first 31 and second 5 walls within the corners near the front and rear corner corners.

Figure 5 partially shows the intersection of the tanks in a triple-sided body (see Figure 3) formed by the intersection of the corner or two longitudinal support walls 2, 3 and the front longitudinal support wall 39.

Figure 5 shows the second sealing wall of the support walls 2, 3 connected to the connecting ring 40. The connecting ring 40 includes a three-sided structure 44 between a straight metal strip 41 extending along the front of the corner corners 42, 43 and a straight metal strip 41.

5 shows that two strips 41 are attached vertically to the support wall 2 and the support wall 3, respectively. These strips 41 are used to absorb tensile forces originating from the sealing walls disposed on the longitudinal wall 39 that are essentially parallel to the wall 39.

Similarly, the connecting ring 40 is mounted vertically to the longitudinal wall 39 along the corner edges 42, 43, but is essentially parallel to the walls 2, 3, Lt; RTI ID = 0.0 > a < / RTI > The overall structure of such a connection ring is disclosed in FR2629897.

The three-sided structure 44 is shown in greater detail in FIGS. 3 and 4. FIG.

In FIG. 5, the triple-sided structure 44 is connected to two straight strips 41 by a connecting structure 45. The three-sided structure 44, the connecting piece 45 and the straight strips 41 are formed by two faces substantially parallel to the front edge corners 42, 43 and parallel to the walls 2,3, 39 As shown in FIG. In addition, the first and second sealing walls 5, 31 of each of the three tank walls can be welded to the attachment surface 61, respectively. This face extends from the sealing walls to the supporting walls 2,3 and 39 and connects the sealing walls to the supporting walls 2,3. The connecting ring 40 including the three-sided structure 44, the connecting pieces 45 and the straight strips 41 is also arranged in the longitudinal direction of the struts placed on the three walls 2, 3, So that the force is absorbed.

The sealing walls 5 and 31 of the tank walls 2 and 3 and 49 are connected to the mounting surface 61 by attachment fittings having a curved edge and consisting of a sheet 66 made of invar. . The seam sheet 66 is welded to the strut 13, welded to the surfaces 61, and welded along their curved edges. The seam means 66 also allow the strap 13 to be sealingly connected to the attachment surface 61.

In particular, first 29 and second 28 corrugated sheets are welded to the wavy plates 46, 47 of the three-sided structure 44 at their ends, respectively.

The triple-sided structure 44 is fabricated as a welded assembly of multiple sheets and has a structure that is symmetrical about an approximately equally distributed surface 16.

The assembly of sheets is characterized in that each sealing wall (5, 31) extending upwardly of each of the three support walls (2, 3, 39) is supported by the support walls ). In addition, the sheets absorb the forces generated by the heat shrinkage of the sealing walls 5, 31 from the support walls 2, 3, 39. The structure of the straight portions 41 is similar to the geometry of the trihedral structure 44 in a plane perpendicular to the corner corner 42. [

For this purpose, the two flat bars 50, 51 are respectively welded to the longitudinal support walls 2, 3 and the front support wall 39, respectively.

The flat bars 51 are welded to the front support wall 39 and extend in the direction of the corner corner 15. The flat bar 45 has two members each parallel to either one of the two longitudinal walls 2, 3 and the other.

The flat bars 50 each have two members respectively welded to the two longitudinal walls 2, 3. The flat bars (50) extend in the transverse direction of the corner corner (15). The orifices 52 are formed between the corner corners and the flat bars 51 so that nitrogen flows across the flat bars.

The first plate 53 is welded to the flat bar 50 and extends rearward toward the interior of the tank. The second sealing walls of the front wall 39 are welded to the first plate 53.

The plate 54 extends parallel to the plate 53 and is fixed to the second flat bar 50 by two plates 55. The first sealing wall 31 of the front wall 39 is welded to the plate 54.

The wavy plate 47 is welded to the flat bar 51 and extends toward the second sealing wall 31 of the longitudinal walls 2,3. The second sealing walls 5 of the longitudinal walls 2, 3 are welded to the wavy plate 47.

The second corrugated plate 46 is secured to the second flat bar 51 by two plates 55. The first sealing wall 31 of the longitudinal walls 2, 3 is welded to the plate 46.

Plates 46, 47, 53, 54 are provided as an assembly of bending sheet and weld seats. The assembly of such sheets delimits the internal volume into which the lagging blocks 62 are inserted to ensure the continuity of the first and second adiabatic walls.

The wavy plates 46, 47 have a wavy shape similar to the wavy sheets 28, 29 to accommodate the wavy portions of the wavy sheets. In addition, sealing between the three-sided structure 44 and the wavy plates 28, 29 can be achieved by welding the wavy portion 32 to the plates 46, 47, for example using TIG welding. have.

The sheets 46, 54 have central portions 56, 57 and side portions 58, 59 showing a stepped contour. These side portions enable welding of the connecting structures 45. The connecting structures 45 are provided with two plates 63 and 64 in a vertical shape. Each of these plates 63 and 64 is supported on the side portions 58 and 59, respectively, and welded to the side portions 58 and 59. The plate 63 does not extend to the wavy plate 47, which is to define the opening 65. This opening 65 enables circulation of the fluid between the two sealing walls 5, 31 and between the longitudinal tank walls 2, 3 and the front tank wall 39, with the nitrogen being deactivated.

The corrugated corrice pieces, such as those described above, may be optimized along the other corner of the tank, for example along the lateral edge corner of the tank.

The above-described tanks may be used in various types of insulating structures such as a geothermal insulation structure or in a methane tanker or similar floating structure.

Referring to Fig. 6, the cutaway view of the methane tanker 70 shows a generally prismatic enclosed thermal insulation tank installed in the ship's double hull 72. The tank wall 71 includes a first sealing wall intended to contact the LNG contained in the tank, a second sealing wall provided between the first sealing wall and the double hull of the ship, a second sealing wall between the first sealing wall and the second sealing wall, And two insulation walls provided between the sealing wall and the double hull 72, respectively.

By means known per se, the loading / unloading pipes disposed in the upper deck of the vessel can be connected by suitable connectors to ship / unload LNG cargoes with the tank 71.

Figure 6 shows an example of a marine terminal including a loading / unloading station 75, a subsea pipe 76 and a ground facility 77. [ The loading / unloading station 75 is a fixed offshore facility that includes a mobile arm 74 and a tower 78 that supports the mobile arm 74. The movable arm 74 carries a plurality of heat-insulating flexible pipes 79 that can be connected to the loading / unloading pipe 73. The pivotable movable arm 74 is provided for all size methane tankers. The connecting pipe (not shown) extends into the tower 78. The loading / unloading station 75 enables loading and unloading between the methane tanker 70 and the ground insulated structure 77. The ground insulation structure 77 includes connection pipes 81 connected to the loading / unloading station 75 by the liquefied gas storage tank 80 and the underside pipe 76. The seabed pipe 76 allows the liquefied gas to be transferred between the loading / unloading station 75 and the ground insulated structure 77 over a distance, for example, 5 km away, / Can be located far away from the coast during unloading.

In order to create the pressure required for the transfer of the liquefied gas, a pump loaded and / or shipped to the ship 70 and / or a pump mounted to the ground insulated structure 77 and / or a loading / unloading station may be used .

Although the present invention has been described with reference to specific embodiments, it is not intended to be limited to these embodiments, and it is intended that the technical equivalents of the above described means and combinations thereof be within the scope of the present invention, It is self-evident.

The use of "comprises" and its uses does not exclude the presence of other elements or steps other than those specified in a claim. The use of an indefinite article for a component or step does not exclude the presence of a number of elements or steps unless otherwise specified.

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

Claims

Characterized in that the support structure (1) has a plurality of support walls (2, 3, 39) which are substantially planar, the support wall having a cross-section of the polygonal cross- Wherein the tank has a plurality of tank walls each of which is fixed to each of the support walls, wherein the tank walls are adjacent to corner edges (15, 43, 42) of the support structure (1)
(4, 6) supported on a corresponding support wall; And
A sealing wall (5, 31) supported by the insulating wall and comprising a metal membrane consisting of juxtaposed metal elements (13) welded to each other in a sealing manner and extending parallel to the corresponding supporting wall Including,
The sealing wall
A support wall extending along said corner corner and extending along said corner corner parallel to a sealing wall disposed in a first one of said two support walls defining said corner corner, (30) having a first connection flange (30) and a second connection flange (30) extending along said corner corner parallel to a sealing wall disposed in a second one of said two support walls defining said corner corner 28, 29)
Each connecting flange being welded to each of the metal elements of the sealing wall,
Said corrugated piece comprising a corrugated portion (32) extending between said two connection flanges along said corner edge and having a convex surface facing the support structure, said corrugated portion having an edge corner (15) (26, 27) arranged in line with said corner corner for receiving a corrugated portion (32) of said corner piece, wherein said corrugated portion (32) Is formed on the inner surface of the heat insulating tank.

The method according to claim 1,
The wavy portion 32 is defined by an imaginary plane 60 which is formed by the extension lines of the sealing walls 5, 31 disposed on the first and second support walls and which extends to the geometric intersection of the two extension lines, Is formed at the rear side from the front side.

3. The method according to claim 1 or 2,
The first tank wall and the second tank wall further comprise a second insulation wall (4), a second sealing wall (5) supported by the second insulation wall,
Wherein the first heat insulating wall is disposed on the second sealing wall,
Said second sealing wall comprising a corrugated piece (28) comprising a metal membrane consisting of juxtaposed metal elements (13) welded together in a sealing manner and in line with the corner of the support structure, Said corner piece having a first connection flange (30) extending parallel to a second sealing wall disposed on a first one of the two support walls defining said corner corner, and two support walls And a second connection flange (30) extending parallel to a second sealing wall disposed on a second support wall of the second sealing wall, each connection flange being welded to each of the metal elements of the second sealing wall,
Said corner piece comprising a wavy portion (32) extending between said two connection flanges and having a convex surface in a direction towards said support structure (1), said wavy portion defining a corner corner (15) Bent to have a more acute angle than the angle between the two support walls,
Wherein said second heat insulating wall is formed with a groove (26) arranged in line with said corner corner for receiving the corrugated portion of said corner piece.

4. The method according to any one of claims 1 to 3,
The heat insulating wall includes corner lagging structures,
The corner lagging structure includes two substructures (17, 18) symmetrical about an equally divided surface (16) defined by the first support wall and the second support wall,
Each sub-
A lower panel (20, 23);
A heat insulating layer (21, 18) supported by the lower panel; And
And an upper panel (22, 25) supported by the insulating layer,
Wherein the grooves (26, 27) of the insulating wall are disposed on the top panels of the two substructures.

5. The method of claim 4,
The upper panel (22, 25) has an elongated shape and includes a half-groove along the longitudinal side of the upper surface of the upper panel.

In combining the third and fourth aspects,
Each of the first and second adiabatic walls comprises a so-called corner lagging structure (17, 18).

The method according to claim 6,
The duct for circulating the gas is formed between the lower panel 23 of the lower structure of the first insulating wall along the corner of the supporting structure and the wavy portion 32 of the second corner piece of the second sealing wall, Tank.

8. The method according to claim 6 or 7,
Each corner sub-structure extending from the equipotential surface 16 to an outer surface of the substructure, the outer surface being provided parallel to the corner of the support structure,
The outer surfaces of the first and second substructures located on the same side of the equally divided surface meet on the same plane.

9. The method of claim 8,
Wherein the outer surfaces of the first and second substructures are perpendicular to the sealing walls (5, 31) arranged in line with the substructures.

10. The method according to any one of claims 1 to 9,
The metal elements (13) are thin plates with a low expansion coefficient parallel to the longitudinal edges bent toward the inside of the tank,
Wherein the sealing wall further comprises a weld support (12) mechanically held on the insulating wall and disposed alternately with the metal struts, wherein curved edges adjacent to the two metal straps each comprise a metal strut Welded to two sides of the welding support,
Wherein the bent, parallel longitudinal edges of the metal struts and the welded supports are substantially parallel to the edge corners of the support structure.

11. The method of claim 10,
The welded joint forms a bellows which is deformable in a direction perpendicular to the corner of the support structure between the welded support 12 and the two metal struts welded to the welded support 12 ,
Wherein the corner pieces (28, 29) of the sealing wall have a strength less than the strength of the welded joints adjacent the corner corner in a direction perpendicular to the corner corner (15).

12. The method according to any one of claims 4 to 11,
Said insulating wall further comprising lagging elements (8, 9) in the form of a parallelepiped adjacent said corner lagging structure,
Wherein the connection flanges (30) of the corner pieces (28, 29) are welded to the metal elements above the lattice elements in the shape of the parallelepiped.

12. The method according to any one of claims 1 to 11,
The third support wall of the support structure interrupts the corner corner (15) defined by the first and second support walls,
Wherein the sealing wall comprises the corner piece (28, 29) disposed along a corner corner of the support structure and further comprises a stop structure (44) in the region of the third support wall,
The stationary structure (44) includes a rigid fixation piece (46, 47) disposed within a continuous line of the corner piece, the fixture piece extending parallel to the sealing wall disposed on the first support wall And a second stop flange extending parallel to the sealing wall disposed on the second support wall,
Wherein the stationary piece includes a wavy portion (32) extending between the two stationary flanges and having a convex surface facing the support structure (1), the wavy portion being adapted to receive the wavy portion of the corner piece Wherein the connection flanges (30) of the corner piece and the corrugated portion (32) of the corner piece are bent so as to have an angle greater than the angle between the two support walls defining the corner corner (15) The stationary piece is welded to the corrugated portion of the stationary flange and the stationary piece, respectively, to seal between the stationary structure and the corner piece, and the stationary piece is fixed to the third support wall 39 to absorb the load in the longitudinal direction of the corner corner, In the case of a closed-type heat insulating tank.

14. The method of claim 13,
The third support wall 39 supports the wall of the tank including the sealing wall,
Said stationary structure having plates (53, 54) extending parallel to said third support wall, said plate being sealingly connected to said rigid stationary piece, said sealing wall of said third tank being connected to said plate Sealed insulation tank welded in a sealed manner.

In a vessel (70) for conveying a cold liquid product,
The ship comprises a double hull (72) and a tank of any one of claims 1 to 14 disposed in the double hull.

A method of using a vessel (70) according to claim 15 for shipping and unloading cold liquid products,
The cold liquid product is conveyed between the floating or ground storage facility (77) and the tank of the ship (71) through the insulating pipes (73, 79, 76, 81).

In a transport system for cold liquid products,
A heat insulating pipe (73, 73, 79, 76, 81) provided to connect the vessel (71) installed on the hull of the ship to the ship (70), floating storage facility or ground storage facility (77) And a pump for flowing the cold liquid product between the floating storage facility or the ground storage facility and a vessel of the vessel through a pipe.