KR20190028560A - Vessel wall comprising a pipe - Google Patents

Abstract

In a tank wall including a first sealing wall 3, a second sealing wall 5, a first heat insulating wall 4, a second heat insulating wall 6 and a pipe 7 passing through the tank wall, A tank wall is connected to the pipe (7) around the pipe (7) and has a first plate (20) spaced from the second sealing wall (5); A first sealing layer (17) located on the second sealing wall (5) near the first plate (21); And a second plate (22) provided parallel to the first plate at the same height as the first layer (17), wherein the first plate and the second plate are connected to a connecting plate 21, 26); A second flexible sealing layer (23) fixed to and connecting the first layer and the second plate; An opening (25) formed through the second plate; And a pipe extending through the first plate.

Description

[0001] VESSEL WALL COMPRISING A PIPE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of manufacturing a hermetically sealed tank, and more particularly to a tank for storing cold liquid, more particularly, a tank for storing liquefied gas or for transporting liquefied gas by sea.

Hermetic thermal insulation tanks are used in various industrial fields 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 degrees in a ground storage tank or a floating floating structure tank.

The thermodynamic conditions of the tank that stores these liquids create refinement at the surface of the liquid. This refinement produces a certain amount of water vapor that can vary in the internal pressure of the tank. In order to control the pressure in these tanks, the vaporized gas is collected and transferred to the evaporation manifold, for example, liquefied or burned again in the propulsion device of the ship.

One embodiment of the invention is a sealed thermal insulation tank comprising a tank wall provided in a support structure for receiving fluid and secured to a wall of the support structure,

A tank wall including a first sealing wall, a first insulating wall, a second sealing wall and a second insulating wall sequentially in the thickness direction from the inside of the tank toward the outside of the tank,

Wherein the tank further comprises an enclosed pipe passing through the tank wall to form a passage between the internal space of the tank and a steam manifold provided outside the tank,

Around said sealed pipe said tank wall comprises:

And a first plate coupled to the periphery of the pipe in a closed manner and extending parallel to the wall, the first plate being spaced apart from the support structure towards the second sealing wall,

And a first peripheral connecting plate fixed to the entire periphery of the first plate in a closed manner and extending parallel to the closed pipe, wherein the first connecting plate extends in the thickness direction of the tank wall, And an edge portion protruding toward the second sealing wall is formed,

And a second heat insulating block provided on a wall of the support structure at a periphery of the first connecting plate, the second heat insulating block being covered by a first sealing layer forming the second sealing wall,

And a second plate disposed parallel to the first plate at the same height as the first sealing layer forming the second sealing wall, the second plate facing the first plate from the second plate, And a second connection plate fixed in a closed manner on a surface protruding toward the support structure in parallel with the pipe, wherein the second connection plate includes a first connection plate, a second connection plate, And the two mutually spaced plates constitute a housing,

A second flexible sealing layer secured in a closed manner and connecting the first sealing layer and the second plate across the second plate;

An opening formed through the second plate to allow gas to flow between the first space located between the two sealing walls and the housing; And

And a pipe extending through the first plate in the direction of the support structure to form a passageway between the housing and the vapor manifold.

Embodiments of the tank may have one or more of the following features.

In one embodiment, the second plate includes a rectangular shaped bearing plate, and the second flexible sealing layer includes a flexible sealing tape secured to an edge of the square bearing plate of the second plate.

In one embodiment, the second plate includes a bearing plate and a third rigid sealing layer secured to the bearing plate at an upper surface, and the second flexible sealing layer comprises a third sealing layer secured to the second plate, And the second connecting plate is welded to the surface of the bearing plate facing the upper surface.

 In one embodiment, one of the two connecting plates has a shape adapted to fit in the remaining connecting plate and to slide in a direction parallel to the pipe.

In one embodiment, the perimeter of the first plate has a circular shape located at a central portion with respect to the closed pipe,

Wherein the first connection plate and the second connection plate have a tube shape and an outer diameter of one of the two connection plates is substantially equal to an inner diameter of the remaining connection plate,

The first connecting plate and the second connecting plate are fitted with respect to the pipe to locate the second plate at the center.

In one embodiment, the first connecting plate extends further beyond the support structure in the direction of the support structure.

In one embodiment, the pipe passes through the circular opening in the support structure, and central members provided around the circumference of the first connecting plate are connected to the opening edge and the < RTI ID = 0.0 > 1 connection plate.

In one embodiment, the ring-shaped third plate is connected to the end of the first plate beyond the support structure by its inner diameter, and the pipe is attached to the outer bearing surface in a direction from the first plate toward the support structure And a heat insulating layer extending beyond the support structure and fixed to the third plate.

In one embodiment, the housing is filled with a porous insulating packing.

In one embodiment, a second pipe extends through the first plate in the direction of the support structure to form a passageway between the housing and the pressure sensor.

In one embodiment, the connecting plate is provided in a tube shape, and the second heat insulating block provided around the first connecting plate has a rectangular window together, and the length of the side of the window is larger than the diameter of the connecting plate , The pipe penetrating the window at the center of the window to form a space between the connecting plate and the second heat insulating block, the space being filled with porous insulating packing.

In one embodiment, the first adiabatic wall includes a first adiabatic block having one side having an arc shape to receive an edge of the pipe, the first adiabatic block having the first sealing wall Wherein the first sealing wall comprises a wavy portion and the panel comprises a slot penetrating the panel and located below the wavy portion of the first sealing wall, Shaped arc shaped to form a passage for fluid between the corrugated portion of the first insulating layer and the housing and a slot opening on the side provided on the slot of the upper panel of the first heat insulating block.

In one embodiment, the pipe is rigidly connected to the support structure at a portion of the pipe, and a portion of the pipe is spaced from the second sealing layer in a direction parallel to the pipe such that contraction of the pipe in the direction Is equal to the heat shrinkage of the second adiabatic wall in the above direction.

The tanks may be part of a landfill, such as a natural gas liquefied natural gas (LNG) storage facility, or a floating structure on the shore or deep water, in particular a methane carrier, a floating gas storage / , A floating oil production / storage / unloading facility (FPSO), and the like.

In one embodiment, the vessel for transporting the cold liquid product includes a double hull and the tank provided in the double hull.

In one embodiment, the present invention provides a method of using the vessel for shipping and unloading a cold liquid product, wherein the cold liquid product is passed through a thermal insulation pipe to a floating storage or ground storage installation, It is transported between tanks of ship.

In one embodiment, the present invention provides a transport system for a cold liquid product, the transport system comprising: a heat-insulating pipe arranged to connect a tank installed in the ship's hull to the vessel, floating storage facility or ground- And a pump for flowing the cold liquid product between the floating storage fixture or the ground storage fixture and the tank of the ship through an insulating pipe.

By convention, "upper" means a case located closer to the interior of the tank, "lower" means a case located closer to the support structure, and the direction of the tank wall relative to the ground gravity field .

 The basic idea of the present invention is that a pipe-shaped passage is present between the interior and the exterior of the tank through the tank wall, allowing the wall to manage the fluid present within its thickness, And to provide a hermetically sealed thermal storage tank to be connected.

An aspect of the present invention is to provide a method for sealing a second sealing membrane using a sealing wall comprising a second sealing membrane positioned in the vicinity of the pipe to close the second sealing membrane and connected in a closed manner near a closed housing extending below the second sealing wall, It was derived from the idea of manufacturing the tank.

Aspects of the present invention utilize flexible sealing tapes secured to a surface connected to the pipe and each having a right-angled edge to simplify mounting, facilitate repair, and achieve a rigid engagement using a small amount of mating tape Thereby sealing the gap between the pipe and the second sealing membrane.

An aspect of the present invention is to provide a method for forming a sealed space in a tank wall between a second sealing membrane and a first sealing membrane to contact the fluid and form a flow path through which the fluid can circulate effectively in the enclosed space and the housing, Respectively.

Aspects of the present invention relate to the design of tanks having strong resistance to thermomechanical stresses. Accordingly, aspects of the present invention relate to a concept of restricting vibration of a pipe to which components of the tank wall are fixed to protect the engagement state of the components. Aspects of the present invention relate to the idea of securing the pipe in order to compensate for the heat shrinkage of the pipe to the tank wall and to limit the thermomechanical stresses on the joining condition.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be more readily understood and other objects, details, features, and advantages of the present invention will become apparent from the following description of several embodiments of the present invention, given by way of non-limitative example, with reference to the accompanying drawings.

1 is a cross-sectional view of a tank wall including a fluid manifold device according to one embodiment of the present invention,
FIG. 2 is an enlarged cross-sectional view of region II of FIG. 1,
Fig. 3 is an exploded perspective view of the tank wall of Fig. 2,
Figure 4 is a partial perspective view of the tank wall of Figure 2 including a second sealing membrane closed in the vicinity of the fluid manifold device,
5 is an exploded perspective view of the fluid manifold device passing through the tank wall,
FIG. 6 is an exploded perspective view of the first heat insulating block of FIG. 2 intended to be positioned in the periphery of the fluid manifold device,
Fig. 7 is a cut-away view of a methane transportation line and a terminal for loading / unloading the transportation line.

By convention, "upper" means a case located closer to the interior of the tank, "lower" means a case located closer to the support structure, and the direction of the tank wall relative to the ground gravity field .

1 shows a fluid manifold device 2 that passes through a ceiling wall of a tank.

The tank comprises a first sealing wall 3, a first sealing wall 4, a second sealing wall 5 and a second sealing wall 3, which are in contact with the product contained in the tank, from the inside of the tank to the supporting structure 1, (6). The first insulating wall, the second sealing wall and the second insulating wall are made of a prefabricated panel assembly which is seated on a mastic bead 9 and fixed to the supporting structure 1.

The tanks may be manufactured with a variety of known geometric structures, for example, a geometric structure having a prismatic shape in the hull of a ship or a cylindrical geometric structure on the ground.

The support structure (1) includes a circular opening (8) welded around a tube (10) extending outwardly therefrom. The metal vapor manifold pipe (7) is fixed inside the tube (10) to discharge the vapor due to evaporation of fluid in the tank. Thus, the manifold pipe 7 extends into the tank and penetrates the tank wall at the center of the circular opening 8 and the sealing walls 3, 5 and the insulating walls 4, 6. The manifold pipe 7 is particularly adapted to extract steam, for example to deliver steam to the propulsion device of the ship or to deliver the steam to the liquefaction device to provide power to the propulsion of the ship, Of the manifold.

The sealing wall 3 is connected to the manifold pipe 7 in a closed manner. Similarly, the sealing wall 5 is connected to the manifold pipe 7 in a closed manner, except for a flow path that allows fluid present between the two sealing walls to flow along the secondary pipes 13, 14 . In this way, the space existing between the second sealing wall 5 and the first sealing wall 3 forms a first closed space connected to the two secondary pipes 13, 14.

The tube 10 is also connected in a closed manner to the support structure 1 and the manifold pipe 7. The manifold pipe (7) includes a heat insulating layer (11) uniformly distributed on its outer bearing surface, the diameter of which is smaller than the circular opening (8). In this way, the space between the heat insulating layer 11 and the circular opening 8 allows fluid to flow between the second heat insulating wall and the intermediate space between the tube 10 and the heat insulating layer 11. The space between the intermediate space and the supporting structure and the second insulating wall 6 forms a second closed space.

The secondary pipes 13 and 14 extend parallel to the manifold pipe 7 of the insulation layer 11 of the manifold pipe 7 from the outside of the tube 10 to the first closed space. The first pipe 13 forms a passage between the first closed space and the discharge unit (not shown) to monitor the fluid located in the first space. The second pipe 14 allows a passage to be formed between the first space and a pressure measurement part (not shown). The two secondary pipes 13, 14 clean the first enclosed space using nitrogen in particular.

Two different pipes (not shown) are welded to the tube 10 and lead to the tube 10 in the second enclosure to monitor the fluid on the second enclosure and to measure the pressure. The pipes connected to the second enclosure also use nitrogen to clean the second enclosure.

The region II of the tank wall through which the manifold pipe 7 passes is described in more detail with reference to Fig.

The prefabricated panel 12 located in the periphery of the manifold pipe 7 comprises a rigid bottom panel 15 supported by the mastic beads 9. The lower panel 15 includes a heat insulating layer 16 formed of a polyurethane foam and forms a second heat insulating wall 6 together with the heat insulating layer 16. [ The flexible or rigid triplex layer 17 is substantially fixed to the entirety of the surface of the insulating layer 16 of the second adiabatic wall 6 and the triplex layer 17 constitutes the second sealing wall 5 do. The second insulating layer 18 made of polyurethane foam covers a part of the triplex layer 17 and is fixed thereto. The rigid upper panel 19 covers the second insulation layer 18 and constitutes the first insulation wall 4 together with the second insulation layer 18.

As described with reference to Fig. 1, the manifold pipe 7 passes through the circular opening 8, the sealing walls 3, 5 and the insulating walls 4, 6. The sealing between the second adiabatic wall and the manifold pipe 7 is effected by a first plate 20 which extends around the manifold pipe and shields the tube 21. The tube 21 is provided on the second plate 22 in a closed manner. In this way, the two plates 20 and 22 form a housing. The flexible tape 23 is secured between the triplex layer 17 and the second plate 22 for sealing the second sealing wall 5.

A circular metal plate 20 is welded around the manifold pipe 7 between the support structure 1 and the second sealing wall 5. The entire circumference of the circular plate 20 is welded to the inner bearing surface of the metal tube 21. [ The metal tube is provided with a diameter smaller than the opening 8 of the supporting structure 1 and extends from the top of the circular plate 14 to the vicinity of the second sealing wall 5.

The second plate (22) is welded to the upper end of the tube (21). The second plate 22 has a rectangular shape and includes a circular passage 25 through which the manifold pipe 7 passes. The diameter of the circular passage 25 is smaller than that of the manifold pipe 7 so as to form a space between the second plate 22 and the manifold pipe 7. Thanks to this space, the fluid can circulate in the first space between the sealing walls 3, 5 and the housing 24.

The tube portion 26 is welded to the lower surface of the second plate 22 and is located at a central portion on the passage 25 of the second plate 22. The diameter of the inner bearing surface of the tube portion 26 is substantially equal to the outer diameter of the tube 18. In this way, the tube portion 21 of the second plate 22 and the tube portion 26 of the second plate 22 can be engaged with each other and can slide in cooperation with each other. The gap between the second plate 22 and the support structure 1 is substantially aligned with the height of the second sealing wall 5 during the welding of the tube portion 26 to the tube 21, (22). The fitting between the tube 21 and the tube portion 26 is such that the opening 25 is located at the center portion with respect to the manifold pipe in the direction toward the second plate 22. Welding between the first plate 20, the tube 21 and the second plate 22 is made along its entire circumference to seal between these components.

The tube 21 also extends below the circular plate 20 to the region beyond the support structure 1. The metal ring 27 has an internal bend and is welded to the end of the tube 21 located in the area beyond the support structure 1 thereof. The surface of the ring 27 is parallel to the tank wall to which the heat insulating layer 11 of the manifold pipe 7 is fixed. The circular plate 20 further comprises two orifices welded to two secondary pipes 13, 14 (not shown in Fig. 2).

The first plate 20, the second plate 22, and the tube 21 and the tube portion 26 are made of stainless steel.

The block 29 connects the prefabricated panel 12 and the second plate 22 to form a thermal insulation layer between the manifold pipe 7 and the prefabricated panel 12. Like the prefabricated panel 12, the block 29 includes a heat insulating layer 31 connected to the second sealing wall 5. A heat insulating layer (31) is provided on the upper panel (30).

The upper panels of the prefabricated panel 12 and block 29 support the first sealing wall 3 in the form of a metal foil plate having wavy portions 32. The corrugated portion 32 forms an elastic region that absorbs heat shrinkage and static pressure and dynamic pressure. Wavy or embossed metal sealing walls are described in particular in French patents FR-A-1379651, FR-A-1376525, FR-A-2781557 and FR-A-2861060. The first sealing wall 3 is connected to the manifold pipe 7 in a closed manner via a flange 33 having an L-shaped cross-section. The flange 33 is welded to the thin plate and the manifold pipe 7.

Referring to Fig. 3, the structure of the components shown in Fig. 2 is shown more specifically. The manifold pipe (7) and the tube (21) penetrate the support structure (1) at the center of the opening (8). The tube 21 is located in the center of the opening 8 through four center spacers 34 arranged around the tube 21 and balanced on the tube 21. The center spacer 34 is bolted to the support structure 1 and is made of high density polyethylene. The spacer 34 prevents the tube 21 and the manifold pipe 7 from vibrating to prevent deterioration of the coupling state in the second barrier 5.

The glass wool packing 35 is provided inside the housing 24. The second plate 22 is located on the tube 21 and is located at substantially the same height as the second sealing wall. The tube portion 26 of the second plate 22 is welded to the tube 21. A heat resistant material (not shown) is provided in advance between the packing 35, the tube 21 and the tube portion 26 in order to prevent the glass wool packing 35 from burning. The packing is porous so that fluid flows freely in the housing between the second enclosure and the secondary pipes (13, 14).

Around the tube 21, there are two members 36 of glass wool packing, all of which have a quadrangular outer bend larger in size than the second plate 22. The two members 36 have a semicircular inner bend so as to be located at the outer bearing surface of the tube 21 and the tube portion 26.

The second insulation wall 6, the second sealing wall 5 and the first insulation wall 4 are provided by two prefabricated panels 12. Each of the panels 12 around the manifold pipe 7 is provided with a U-shaped bottom portion 32 constituting the second insulating wall, in order to prevent the sealing coating 32 region located at the edges of the lower block 37 from being covered, The heat insulating block 37, the sealing layer 17 which completely covers the upper surface of the block and the U-shaped upper heat insulating block 38 of the smaller size constituting the first heat insulating wall 4, U shape. The panel for the insulating wall can be manufactured in advance by bonding the polyurethane foam and the plywood together. The lower block 37 includes a lower panel 15 and a heat insulating foam layer 16 and the upper block includes a heat insulating layer 18 and an upper panel 19. Two U-shaped prefabricated panels face each other to wrap the two members of the glass wool packing. Each of the prefabricated panels 12 can be brought into contact with the securing means of the prefabricated panel 12 during assembly so that the prefabricated panel 12 can be secured to a stud (not shown) And a chimney (42).

The four flexible tapes 23 are fixed and connected to one side of the second plate and one side of the sealing layer 17 in the open area of the U-shaped prefabricated panel 12. The flexible tape 23 is fixed using a polyurethane adhesive. Fig. 4 more specifically shows the adhesion of the flexible tape 23. Fig. The two first flexible tapes 23a are fixed to and connect to the inner side of the U-shaped prefabricated panel 12 and the two flexible tapes 23b are connected to the two prefabricated panels 12 and the second plate 22, And is fixed to and connected to the end portion 41 of the two first flexible tapes 23a as well as to these. Such a bonding method is reliable, can be easily carried out during assembly, and is repaired simply by attaching only a narrow area for easy separation. Also, releasing the second membrane 5 by bonding in this manner can also be performed automatically.

Referring to Fig. 3, four blocks 29 are positioned on the flexible tape to complete the first sealing wall. One side of the block (29) is provided in an arc shape to receive the manifold pipe (7). The diameter of the arc is larger than the diameter of the manifold pipe 7 as shown in Fig. A space (not shown) is formed between the manifold pipe 7 and the block 29 for glass wool packing.

Thereafter, the metal thin plate plate of the sealing wall is fixed to the first heat insulating wall. The metal plate is arranged such that no part of the corrugated portion 32 passes beyond the first sealing wall portion through which the manifold pipe 7 passes. In this way, the portion through which the manifold pipe 7 passes is substantially planar and enables the positioning and welding of the flange 33.

Fig. 5 shows the second plate 22 of Figs. 2 to 3 more accurately. The rigid layer tape 43 is fixed between the side of the rectangular portion of the second plate 22 and the circular passage 25. [ The flexible sealing layer tape 23 is fixed between the rigid layers. In this way, the flexible layer tape 23 is fixed only to the rigid sealing layer.

Figure 6 illustrates the structure of block 29 that allows fluid to flow between wavy portion 32 and housing 24. The top panel includes a right angle slot (44) through the panel between the top and bottom surfaces of the panel. During installation of the first sealing wall, two mutually orthogonal wavy portions 32 are provided on the slots 44 so that the fluid on the wavy portion 32 can flow toward the insulating layer 18. The insulation layer 18 further includes a connection slot 46 corresponding to the slot 44 of the upper panel and the connection slot 46 is formed by three parallel slots extending in the direction of the circular portion of the block, 46 are open on the block. The slots 45 and 46 of the insulation layer 18 of the block 29 are filled with glass wool having a density of 22 kg / m < 3 >. In this way, the gaseous fluid passing through the upper panel is discharged from the block in the space between the block and the manifold pipe (7).

Due to the particular construction of the block 29, the formation of the space between the circular passage 25 and the manifold pipe 7 and the housing 24 comprising the porous packing 35, the fluid can flow into the first enclosed space, A flow path is formed which allows the fluid to flow between the first pipe 32 and the second pipe 13, 14.

Similarly, due to the space between the circular opening 8 and the pipe 21 and the space between the supporting structure 1 and the lower panel 15, a fluid flow path is created between the second space and the tube 10 . These channels allow nitrogen to be used to treat inert gases on the tank walls.

To reduce the stress applied to the joint portion around the manifold pipe 7, the manifold pipe 7 is connected to a portion of the manifold pipe 7 that is spaced apart from the interior of the tank with respect to the support structure 1 48). In this way, the shrinkage of the manifold pipe 7, which is generated when the manifold pipe 7 is in a low-temperature state, is reduced at the height of the region where the shrinkage of the manifold pipe 7 is fixed to the second plate 22, . Thus, the stress at the joint portion of the tank wall is reduced. This fixing part includes a metal member 49 in the form of a cut cone, which is welded to the hermetically sealed pipe 7. The cut conical shaped member 49 is seated on the support inside the tube 10.

Although the manifold pipe 7 has been described as passing through the ceiling wall of the tank in this embodiment, in another embodiment, the manifold pipe 7 may penetrate the tank wall at the top of the tank side wall.

Tanks may be used in a variety of installations on floating structures such as ground installations or methane carriers.

Referring to Fig. 7, a cross-sectional view of the methane transportation line 7 shows a hermetically sealed thermal insulation tank 71 of a general prismatic shape mounted on the double hull 72 of the transportation line. The wall of the tank 71 has a first sealing wall in contact with the liquefied natural gas contained in the tank, a second sealing wall provided between the first sealing wall and the double hull of the ship, and a second sealing wall between the first sealing wall and the second sealing wall And two insulation walls provided between the second sealing wall and the double hull 72 respectively.

The loading / unloading pipe provided in the upper deck of the ship can be connected to the offshore or coastal terminal by an appropriate connector to unload or ship the liquefied natural gas cargo with the tank 71. [

7 shows an example of a marine terminal including a loading / unloading station 75, a subsea pipe 76, and a ground installation 77. Fig. The loading / unloading station 75 is a stationary marine installation including a movable arm 74 and a tower 78 supporting the movable arm 74. The movable arm 74 includes a plurality of insulated flexible pipes 79 that can be connected to the loading / unloading pipe 73. The directional movable arm 74 is applied to all methane shipping line gauges. A connecting pipe (not shown) extends inside the tower 78. Loading / unloading station 75 enables loading and unloading of methane shipping lines on the ground fixture 77. The ground fixture 77 includes a liquefied gas storage tank 80 and a connecting pipe 81 connected to the loading / unloading station 75 by the underside pipe 76. Liquefied gas may be transferred between the loading / unloading station 75 and the ground fixture 77 at a distance, for example, 5 km, due to the underside pipe 76, It can be located far away from the waterfront during unloading operations.

A pump mounted on the hull pump and / or ground fixture 77 in the shipping line 70 and / or a pump installed in the loading / unloading station 75 may be used to generate the pressure required for the delivery of the liquefied gas.

While the present invention has been described with reference to particular embodiments, it is not intended to be limited to these embodiments, but it is to be understood that they include all technical equivalents of the means and combinations thereof described within the scope of the present invention.

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 (14)

A sealed thermal insulation tank comprising a tank wall provided in a support structure (1) for receiving a fluid and fixed to a wall of the support structure,
The tank wall has a first sealing wall 3, a first heat insulating wall 4, a second sealing wall 5 and a second heat insulating wall 6 (see FIG. 1) in the thickness direction toward the outside of the tank, ), And the space between the second sealing wall (5) and the first sealing wall (3) forms a first closed space,
Wherein the tank further comprises a sealed pipe (7) passing through the tank wall to form a passage between an inner space of the tank and a vapor manifold provided outside the tank,
The first sealing wall (3) is provided with a sealing means for sealing the manifold (7) except for a flow path for allowing fluid existing between the first sealing wall and the second sealing wall to flow to the first pipe (13) , And the first pipe (13) is configured to form a passage between the discharge part and the first closed space to monitor the fluid present in the first space. The method according to claim 1,
In the vicinity of the closed pipe (7), the tank wall
And a first plate (20) connected to the periphery of the pipe (7) in a closed manner and extending parallel to the tank wall, wherein the first plate (20) Are spaced apart towards the support structure (1)
And a first peripheral connecting plate (21) fixed to the entire periphery of the first plate in a closed manner and extending in parallel with the closed pipe (7), the first peripheral connecting plate Extending along the first plate to form an edge protruding from the first plate toward the second sealing wall,
And a second heat insulating block (16) provided on a wall of the support structure around the first peripheral connecting plate (21), the second heat insulating block being covered by the second sealing wall (5)
And a second plate (22) provided parallel to the first plate, wherein the second plate projects from the second plate toward the first plate toward the support structure in parallel with the pipe (7) And a second connection plate (26) fixed to the surface in a closed manner, the second connection plate (26) being hermetically fixed to the first peripheral connection plate at a periphery of the first peripheral connection plate, The two mutually spaced plates form a housing 24,
An opening is formed through the second plate so that gas can flow between the first space and the housing,
Wherein the first pipe (13) extends through the first plate in the direction of the support structure to form a passageway between the housing and the vapor manifold. 3. The method of claim 2,
Wherein one of the two connecting plates (21, 26) is fitted to the other connecting plate and has a shape provided to slide in a direction parallel to the pipe (7). The method according to claim 2 or 3,
The circumference of the first plate (20) has a circular shape located at a central portion with respect to the closed pipe,
The first peripheral connection plate 21 and the second connection plate 26 are formed in a tube shape and the outer diameter of one of the two connection plates is substantially the same as the inner diameter of the other connection plate,
Wherein the first peripheral connecting plate and the second connecting plate are fitted to center the second plate (22) with respect to the pipe (7). 5. The method according to any one of claims 2 to 4,
The first peripheral connecting plate (21) extends further beyond the support structure (1) in the direction of the support structure. 6. The method of claim 5,
The pipe (7) passes through the circular opening (8) in the support structure,
The center members (34) provided around the periphery of the first peripheral connecting plate are arranged in a space between the periphery of the opening (8) and the first peripheral connecting plate for positioning the sealed pipe in the central part, . The method according to claim 5 or 6,
The ring-shaped third plate 27 is connected to the end of the first plate beyond the support structure by its inner diameter,
Wherein the pipe (7) comprises a heat insulating layer (11) extending beyond the support structure in a direction toward the support structure from the first plate to the outer bearing surface thereof and secured to the third plate. 8. The method according to any one of claims 2 to 7,
The housing (24) is filled with a porous heat insulating packing (35). 9. The method according to any one of claims 2 to 8,
A second pipe (14) extends through the first plate in the direction of the support structure to form a passageway between the housing (24) and the pressure sensor. 10. The method according to any one of claims 2 to 9,
The connecting plate is provided in a tube shape and the second heat insulating blocks 16 provided around the first peripheral connecting plate all have a rectangular window and the length of the side of the window is smaller than the diameter of the connecting plate And the pipe passes through the window at the center of the window to form a space between the connecting plate and the second heat insulating block and the space is filled with the porous heat insulating packing. 11. The method according to any one of claims 2 to 10,
Wherein said first heat insulating wall comprises a first heat insulating block (29) having one side (47) of an arc shape for receiving the edge of said pipe (7), said first heat insulating block (29) The first sealing wall comprises a wavy portion and the panel extends through the panel to form a wavy portion 32 of the first sealing wall 3, And the heat insulating layer is provided in an arc shape so as to form a passage for fluid between the corrugated portion of the first insulating layer and the housing, And a slot opening (45, 46) on a side provided on the slot of the tank. In a vessel (7) for transporting a cold liquid product,
A ship comprising a double hull (72) and a tank (71) according to any one of claims 1 to 11 provided on said double hull. A method of using a vessel (7) according to claim 12 for shipping and unloading cold liquid products,
Wherein the cold liquid product is transported between a floating storage installation or ground storage installation (77) and the tank (71) of the vessel through the insulating pipes (73, 79, 76, 81). In a cold liquid product delivery system,
(73, 79, 76, 81) provided to connect a tank (71) provided on the hull of the ship to a ship (70), a floating storage installation or a ground storage installation (77) And a pump for flowing the cold liquid product between the floating storage installation or the ground storage installation through the pipe and the tank of the ship.

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