KR102674649B1 - Mounting structure for liquefied gas storage tank, vessel having the same - Google Patents

Abstract

The liquefied gas storage tank installation structure of the present invention includes a liquefied gas storage tank having a bi-lobe shape and standing vertically; Saddles provided between the lower part of the liquefied gas storage tank and the hull to support the liquefied gas storage tank; And it is disposed between the upper part of the liquefied gas storage tank and the hull, and may include an anti-rolling chock that prevents the liquefied gas storage tank from rolling.

Description

Liquefied gas storage tank installation structure and vessel including the same {MOUNTING STRUCTURE FOR LIQUEFIED GAS STORAGE TANK, VESSEL HAVING THE SAME}

The present invention relates to a liquefied gas storage tank installation structure and a ship including the same.

Power plants may be installed on land to meet power demand, and power plants may generate power using fossil fuels. However, a large amount of carbon dioxide is generated during the power generation process. Additionally, carbon dioxide is generated during the process of extracting oil or natural gas from an oil or gas well. This carbon dioxide is released into the atmosphere.

However, because carbon dioxide is the main cause of environmental pollution, regulations exist to reduce carbon dioxide emissions. For example, due to the Kyoto Protocol, which came into effect in 2005 as a specific implementation plan to prevent global warming, it is becoming increasingly difficult to release carbon dioxide directly into the atmosphere.

In order to respond to these regulations, a method of storing carbon dioxide in a separate storage unit has been proposed to reduce carbon dioxide emitted into the atmosphere. For example, Enhanced Oil Recovery (EOR), which stores carbon dioxide directly in places where large amounts of carbon dioxide is generated, can be used.

However, when attempting to use carbon dioxide as EOR or EGR (Enhanced Gas Recovery) using an Oil FPSO or LNG FPSO connected to an oil or gas well, the problem is that it is difficult to secure sufficient separate space to store carbon dioxide inside these FPSOs. There is. In addition, there is a problem that when the storage capacity is completely filled, various devices and facilities installed to process and store carbon dioxide are no longer useful and are discarded.

In addition, methods for transporting, processing, and storing carbon dioxide emitted from land-based power plants to short distances by transport pipes or vehicles have only been developed, so carbon dioxide emissions are still not sufficiently resolved.

Accordingly, methods of transporting carbon dioxide to a storage location using ships equipped with liquefied gas storage tanks in which liquefied carbon dioxide is stored are being studied.

The present invention was created to solve the problems of the prior art as described above, and one object of the present invention is to provide a liquefied gas storage tank installation structure that can stably support the liquefied gas storage tank and a ship including the same. .

The liquefied gas storage tank installation structure according to one aspect of the present invention includes a liquefied gas storage tank having a bi-lobe shape and standing vertically; Saddles provided between the lower part of the liquefied gas storage tank and the hull to support the liquefied gas storage tank; And it is disposed between the upper part of the liquefied gas storage tank and the hull, and may include an anti-rolling chock that prevents the liquefied gas storage tank from rolling.

Specifically, it has a ring shape and may further include a plurality of internal reinforcing materials provided inside the liquefied gas storage tank.

Specifically, the internal reinforcement members are spaced apart from each other and include first to sixth internal reinforcement members arranged sequentially, and the first to sixth internal reinforcement members have an opening through which the liquefied gas inside the liquefied gas storage tank can flow. It can be included.

Specifically, the openings of the first internal reinforcement, the third internal reinforcement, the fourth internal reinforcement, and the sixth internal reinforcement have the same shape or the same open area, and the openings of the second internal reinforcement and the fifth internal reinforcement are The openings have the same shape or the same open area, and the openings of the first internal reinforcement, the third internal reinforcement, the fourth internal reinforcement, and the sixth internal reinforcement, and the openings of the second internal reinforcement and the fifth internal reinforcement. The openings may have different shapes or different open areas.

Specifically, a plurality of anti-rolling chocks may be provided, and each anti-rolling chock may be disposed at a position corresponding to the first to sixth internal reinforcement members.

Specifically, the anti-rolling choke includes a choke part made of metal; and a hull connection part provided between the upper part of the choke part and the hull to support the choke part and made of a material with a thermal conductivity lower than that of metal.

Specifically, the choke portion may include a plurality of flanges arranged to be spaced apart from each other in order to fix the hull connection portion.

Specifically, the surface of the choke portion in contact with the liquefied gas storage tank may have a curvature corresponding to the curvature of the outer shape of the liquefied gas storage tank.

A ship according to one aspect of the present invention may include a liquefied gas storage tank installation structure.

The liquefied gas storage tank installation structure according to the present invention can stably support a vertically erected bi-lobe-shaped liquefied gas storage tank using anti-rolling chocks, anti-floating chocks, or saddles integrated with the ship. .

1 is a side cross-sectional view of a ship according to an embodiment of the present invention.
Figure 2 is a plan cross-sectional view of a ship according to an embodiment of the present invention.
Figure 3 is a front cross-sectional view according to an embodiment of the present invention.
Figure 4 is a cross-sectional view for explaining the installation structure of a liquefied gas storage tank according to an embodiment of the present invention.
FIG. 5 is a perspective view limited to the liquefied gas storage tank, saddle, and anti-rolling choke shown in FIG. 4.
Figure 6 is a perspective view for explaining the internal reinforcement provided inside the liquefied gas storage tank shown in Figure 4.
FIG. 7 is a plan view for explaining the anti-rolling chock shown in FIG. 4.
Figure 8 is a cross-sectional view for explaining the installation structure of a liquefied gas storage tank according to another embodiment of the present invention.
Figure 9 is a perspective view for explaining the installation structure of a liquefied gas storage tank according to another embodiment of the present invention.
FIG. 10 is a side view for explaining the installation structure of the liquefied gas storage tank shown in FIG. 9.

The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In this specification, when adding reference numbers to components in each drawing, it should be noted that identical components are given the same number as much as possible even if they are shown in different drawings. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Additionally, terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a side cross-sectional view of a ship according to an embodiment of the present invention, Figure 2 is a plan cross-sectional view of a ship according to an embodiment of the present invention, and Figure 3 is a front cross-sectional view according to an embodiment of the present invention.

Referring to Figures 1 and 3, the ship 1 according to an embodiment of the present invention may include a liquefied gas storage tank installation structure 2, which will be described later.

Please note that ship (1) can be a general merchant ship or an expression encompassing offshore plants such as FLNG, FSRU, etc., and furthermore, it encompasses all means of moving from a certain point to another point through the sea.

The ship 1 may have a liquefied gas storage tank 10 that stores carbon dioxide (CO ₂ ) as a liquefied gas. There may be a plurality of liquefied gas storage tanks 10.

A plurality of liquefied gas storage tanks 10 may be provided in a plurality of rows, for example, two rows. However, on the bow side of the ship 1, fewer than the number of liquefied gas storage tanks 10, for example, one liquefied gas storage tank 10, may be provided. Additionally, when the liquefied gas storage tanks 10 are provided in three rows, two liquefied gas storage tanks 10 may be provided on the bow side of the ship.

Additionally, the liquefied gas storage tank 10 may be provided inside the hull, but is not limited thereto. For example, some liquefied gas storage tanks 10 may be placed overboard.

Additionally, the liquefied gas may be LPG, LNG, or ammonia in addition to carbon dioxide. However, liquefied gas may have a higher boiling point than the gaseous fuel described below. That is, the liquefied gas may be carbon dioxide, LPG, ammonia, etc., and the gaseous fuel may be LNG, etc. Hereinafter, an embodiment of the present invention will be described assuming that the liquefied gas is carbon dioxide.

The liquefied gas storage tank 10 can maintain carbon dioxide in a liquid state by storing carbon dioxide at a pressure above the triple point (5 barg, -54.4°C). For this purpose, the liquefied gas storage tank 10 is a pressure vessel and can be in the form of a C-Type, etc., but of course it can also have various forms/structures capable of maintaining the above pressure.

The liquefied gas storage tank 10 may have a design pressure. That is, there may be a pressure value that the liquefied gas storage tank 10 can structurally withstand. In addition, in order to prevent the internal pressure of the liquefied gas storage tank 10 from reaching the design pressure when it continues to rise, the liquefied gas storage tank 10 may be provided with a safety valve that automatically opens at a certain pressure. there is.

That is, the liquefied gas storage tank 10 can be operated within this preset pressure range. For example, the liquefied gas storage tank 10 has a lower limit of the preset pressure higher than the triple point pressure of carbon dioxide, which is 5.5 barg or more, and the preset pressure is higher than the design pressure of the liquefied gas storage tank 10 (8 barg, which is the opening pressure of the safety valve). As a low upper limit, it can be operated in a preset pressure range of 7.2 barg or less.

Additionally, the ship 1 is provided with a fuel tank 41. The fuel tank 41 stores fuel to be supplied to the demand source 3 provided on the ship 1. The demand source 3 is a propulsion engine, a power generation engine, a gas turbine, a boiler, a fuel cell, etc., through combustion of fuel. Refers to all devices that generate energy.

The fuel tank 41 may be placed outboard, for example, installed on the deck to be supported using a known support structure. Alternatively, the fuel tank 41 may be provided on board, and more than one fuel tank 41 may be provided.

The fuel stored in the fuel tank 41 may be a gas fuel with a lower boiling point than liquefied gas. For example, the gas fuel may be LNG, LPG, methanol, hydrogen, or ammonia, but is not limited thereto.

Figure 4 is a cross-sectional view for explaining the installation structure of a liquefied gas storage tank according to an embodiment of the present invention, and Figure 5 is a perspective view limited to the liquefied gas storage tank, saddle, and anti-rolling choke shown in Figure 4, FIG. 6 is a perspective view for explaining the internal reinforcement provided inside the liquefied gas storage tank shown in FIG. 4, and FIG. 7 is a plan view for explaining the anti-rolling chock shown in FIG. 4.

4 to 7, the liquefied gas storage tank installation structure 2 according to an embodiment of the present invention may include a liquefied gas storage tank 10, a saddle 20, and an anti-rolling choke 30. there is.

The liquefied gas storage tank 10 may be provided inside the hull, but is not limited thereto. For example, some liquefied gas storage tanks 10 may be placed overboard.

The liquefied gas storage tank 10 may have a bi-lobe shape that connects two round tanks in communication with each other. Additionally, the liquefied gas storage tank 10 may be installed as a bilobe-shaped C-Type that stands vertically in an '8' shape.

When the liquefied gas storage tank 10 is installed in the vertical direction, the width occupied by the space where the liquefied gas storage tank 10 is installed along the longitudinal direction of the ship can be significantly reduced.

An internal reinforcing member 15 having a ring shape, such as a support ring or a stiffener ring, may be provided inside the liquefied gas storage tank 10.

A plurality of internal reinforcements 15 may be provided. For example, the internal reinforcement 15 may include first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, and 15f arranged sequentially, and the first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, 15f) may be arranged to be spaced apart from each other.

The first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, and 15f may include an opening 16 through which the liquefied gas inside the liquefied gas storage tank 10 can flow. The opening 16 may include an upper opening 16a and a lower opening 16b corresponding to the upper and lower portions of the bilobe shape.

Here, the openings 16 of the first internal reinforcement 15a, the third internal reinforcement 15c, the fourth internal reinforcement 15d, and the sixth internal reinforcement 15f may have the same shape or the same open area. Additionally, the openings 16 of the second internal reinforcement member 15b and the fifth internal reinforcement member 15e may have the same shape or the same open area.

The openings 16 of the first internal reinforcement (15a), the third internal reinforcement (15c), the fourth internal reinforcement (15d) and the sixth internal reinforcement (15f), the second internal reinforcement (15b) and the fifth internal reinforcement. The opening in (15e) may have a different shape or a different open area.

The saddle 20 may be provided between the lower part of the liquefied gas storage tank 10 and the hull. There may be at least two saddles 20 and may support the liquefied gas storage tank 10.

The birds 20 may include first birds 20a and second birds 20b. The first birds 20a are fixed to the hull, and the second birds 20b are slideable birds. It can be. For example, the first saddle 20a may be integrated with the hull, and the lower part of the second saddle 20b may be slidably connected to the hull through a separate sliding guide (e.g., guide rail, etc.) .

Meanwhile, the saddle 20 may be provided in a form that surrounds at least a portion of the lower circle of the liquefied gas storage tank 10. For example, at least a portion of the saddle 20 is provided higher than the center (LCC) of the lower circle of the liquefied gas storage tank 10, and is positioned higher than the center (LCC) of the lower circle of the liquefied gas storage tank 10. It can be provided in a form that covers up to.

The anti-rolling choke 30 is disposed at the upper part of the liquefied gas storage tank 10, especially between the uppermost part of the liquefied gas storage tank 10 and the hull, and is disposed in the vertical bilobe shape of the liquefied gas storage tank 10. It can compensate for weaknesses in lateral movement. For example, the anti-rolling choke 30 can prevent the liquefied gas storage tank 10 from rolling.

A plurality of anti-rolling chocks 30 may be provided. For example, there are two anti-rolling chocks 30, and each anti-rolling chock 30 includes first to sixth internal reinforcements 15a, 15b, 15c, 15d, at the top of the liquefied gas storage tank 10. It may be placed in a position corresponding to 15e, 15f). Therefore, it is possible to prevent stress generated by rolling of the liquefied gas storage tank 10 from concentrating on one point. Accordingly, the fatigue life of the liquefied gas storage tank 10 can be improved.

The anti-rolling choke 30 may include a choke portion 31 and a hull connection portion 35.

The choke portion 31 may include a metal material, for example, steel. At least a portion of the choke portion 31, for example, the bottom of the choke portion 31, may be in contact with the liquefied gas storage tank 10. Here, the bottom of the choke portion 31 may have a curvature corresponding to the curvature of the outer shape of the liquefied gas storage tank 10.

A hull connection part 35 may be coupled to the upper part of the choke part 31. In addition, on each of the left and right sides of the upper part of the choke part 31, two flanges 32 are provided spaced apart from each other for fixing the hull connection part 35, and the hull connection part 35 is between the two flanges 32. It can be placed in an inserted form.

The hull connection part 35 is provided between the upper part of the choke part 31 and the hull to support the choke part 31. That is, one side of the hull connection part 35 may be connected to the hull, and the other side may be connected to the upper part of the choke part 31.

The hull connection portion 35 may be made of a material with a lower thermal conductivity than metal for insulation between the liquefied gas storage tank 10 and the hull. For example, the hull connection portion 35 may be made of wood such as plywood. Therefore, cold air from the liquefied gas storage tank 10 may not be transmitted to the hull side by the hull connection portion 35.

As described above, the liquefied gas storage tank installation structure 2 according to the present embodiment includes an anti-rolling chock 30 to reduce the lateral movement vulnerability of the liquefied gas storage tank 10, which has a vertical bilobe shape. It can be supplemented. In particular, the anti-rolling choke 30 can prevent the liquefied gas storage tank 10 from rolling.

Figure 8 is a cross-sectional view for explaining the installation structure of a liquefied gas storage tank according to another embodiment of the present invention.

Referring to FIG. 8, the liquefied gas storage tank installation structure 2 according to another embodiment of the present invention includes a liquefied gas storage tank 10, a saddle 20, an anti-rolling choke 30, and an anti-floating choke 40. may include.

The liquefied gas storage tank 10 has a bi-lobe shape that connects two round tanks in communication with each other, and can be installed as a bilobe-shaped C-Type that stands vertically.

An internal reinforcing material 15 such as a support ring or stiffener ring may be provided inside the liquefied gas storage tank 10.

The internal reinforcement 15 may include first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, and 15f arranged sequentially, and the first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, 15f) may be arranged spaced apart from each other.

The saddle 20 may be provided between the lower part of the liquefied gas storage tank 10 and the hull. There may be at least two saddles 20 and may support the liquefied gas storage tank 10. The saddle 20 includes a first saddle 20a integrated with the hull, and a second saddle 20b that can be slidably connected to the hull through a sliding guide in the direction in which contraction and expansion of the liquefied gas storage tank 10 occurs. ) may include.

In addition, at least a portion of the saddle 20 is provided higher than the center (LCC) of the lower circle of the liquefied gas storage tank 10, and surrounds the saddle to a position higher than the center (LCC) of the lower circle of the liquefied gas storage tank 10. It can be provided in the form

As described above, the first saddle 20a and the second saddle 20b are connected to the hull, and the first saddle 20a and the second saddle 20b are the center of the lower circle of the liquefied gas storage tank 10. By being provided in a form that surrounds a position higher than (LCC), the first saddle 20a and the second saddle 20b can compensate for the weakness of the longitudinal behavior of the liquefied gas storage tank 10. That is, the first saddle 20a and the second saddle 20b serve as an anti-pitching chock, so the anti-pitching chock can be omitted.

The anti-rolling chock 30 is disposed at the top of the liquefied gas storage tank 10, particularly between the uppermost part of the liquefied gas storage tank 10 and the hull, and can prevent the liquefied gas storage tank 10 from rolling.

A plurality of anti-rolling chocks 30 may be provided. For example, the anti-rolling chock 30 may be provided at a position corresponding to the internal reinforcement 15 at the top of the liquefied gas storage tank 10.

The anti-floating choke 40 can prevent the liquefied gas storage tank 10 from floating. The anti-floating choke 40 may be disposed between the upper part of the liquefied gas storage tank 10 and the hull.

Additionally, the anti-floating choke 40 may have the same or similar structure as the anti-rolling choke. For example, at least a portion of the anti-rolling choke 30 may be in contact with the liquefied gas storage tank 10, and the bottom surface of the anti-rolling choke 30 in contact with the liquefied gas storage tank 10 may be a liquefied gas storage tank ( 10) It can have a curvature that corresponds to the curvature of the external shape.

A plurality of anti-floating chokes 40 may be provided. For example, the anti-floating choke 40 may be provided at a position corresponding to the internal reinforcement 15 of the liquefied gas storage tank 10.

As described above, the liquefied gas storage tank installation structure 2 according to the present embodiment includes an anti-rolling choke 30 and an anti-floating choke 40, and a liquefied gas storage tank 10 having a vertical bilobe shape. ) can compensate for the weaknesses in lateral and vertical behavior. In particular, the anti-floating choke 40 can prevent the liquefied gas storage tank 10 from floating.

Figure 9 is a perspective view for explaining the liquefied gas storage tank installation structure according to another embodiment of the present invention, and Figure 10 is a side view for explaining the liquefied gas storage tank installation structure shown in Figure 9.

9 and 10, the liquefied gas storage tank installation structure 2 according to another embodiment of the present invention includes a liquefied gas storage tank 10, a saddle 20, an anti-rolling choke 30, and an anti-floating It may include a choke 40.

The liquefied gas storage tank 10 has a bi-lobe shape that connects two round tanks in communication with each other, and can be installed as a bilobe-shaped C-Type that stands vertically.

An internal reinforcing material 15 such as a support ring or stiffener ring may be provided inside the liquefied gas storage tank 10.

The internal reinforcement 15 may include first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, and 15f arranged sequentially, and the first to sixth internal reinforcements 15a, 15b, 15c, 15d, 15e, 15f) may be arranged spaced apart from each other.

The saddle 20 may be provided between the lower part of the liquefied gas storage tank 10 and the hull. Three or more saddles 20 may be provided to support the liquefied gas storage tank 10.

For example, the saddles 20 include first saddles 20a integrated with the hull, second saddles 20b, third saddles 20c, and fourth saddles that can be slidably connected to the hull through a sliding guide. (20d) may be included.

The first to fourth saddles 20d may be provided to surround at least a portion of the lower circle of the liquefied gas storage tank 10. For example, at least a portion of the first to fourth saddles 20d is provided higher than the center (LCC) of the lower circle of the liquefied gas storage tank 10, and the center of the lower circle of the liquefied gas storage tank 10 ( It can be provided in a form that surrounds a position higher than the LCC).

The first to fourth saddles 20d may be provided at positions corresponding to the internal reinforcement 15 of the liquefied gas storage tank 10. For example, the first saddle 20a is provided at a position corresponding to the second internal reinforcement 15b, the second saddle 20b is provided at a position corresponding to the third internal reinforcement 15c, and the third saddle 20a is provided at a position corresponding to the third internal reinforcement 15c. The saddle 20c may be provided at a position corresponding to the fourth internal reinforcement member 15d, and the fourth saddle 20d may be provided at a position corresponding to the fifth internal reinforcement member 15e.

As described above, the liquefied gas storage tank installation structure 2 according to the present embodiment adopts a multi-support structure method including three or more saddles 20, for example, first to fourth saddles 20d. By doing so, the load caused by the liquefied gas storage tank 10 can be distributed and the stress concentration phenomenon can be reduced. Accordingly, the fatigue life of the liquefied gas storage tank 10 can be improved.

In addition, the liquefied gas storage tank installation structure 2 according to the present embodiment has a structure in which the first to fourth saddles 20d are provided at positions corresponding to the internal reinforcement 15, so that the liquefied gas storage tank 10 Effective load transfer between the hull and the hull is possible, and through this, the reinforcement structure to improve the stability of the liquefied gas storage tank 10 can be minimized. Therefore, the cost for improving the stability of the liquefied gas storage tank 10 can be minimized.

The present invention is not limited to the embodiments described above, and may include a combination of at least two or more of the above embodiments or a combination of at least one of the above embodiments and known techniques as a new embodiment. Of course.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It would be clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1: Ship
2: Liquefied gas storage tank installation structure
10: Liquefied gas storage tank
15: Internal reinforcement
20: Birds
30: Anti-rolling choke
31: Choke part
32: Flange
35: Hull connection
40: Anti-floating choke
41: fuel tank

Claims (9)

A liquefied gas storage tank having a bi-lobe shape and standing vertically;
Saddles provided between the lower part of the liquefied gas storage tank and the hull to support the liquefied gas storage tank;
An anti-rolling chock disposed between the upper part of the liquefied gas storage tank and the hull and preventing the liquefied gas storage tank from rolling; and
First to sixth internal reinforcements provided inside the liquefied gas storage tank, arranged sequentially and spaced apart from each other, and including openings through which the liquefied gas inside the liquefied gas storage tank can flow,
The saddle is shaped to surround the lower part of the liquefied gas storage tank to a position higher than the center of the lower circle of the liquefied gas storage tank,
The openings of the first internal reinforcement, the third internal reinforcement, the fourth internal reinforcement, and the sixth internal reinforcement have the same shape or the same open area,
The openings of the second internal reinforcement and the fifth internal reinforcement have the same shape or the same open area,
The openings of the first internal reinforcement, the third internal reinforcement, the fourth internal reinforcement, and the sixth internal reinforcement, and the openings of the second internal reinforcement and the fifth internal reinforcement, have different shapes or different open areas. Gas storage tank installation structure. delete delete delete According to claim 1,
The anti-rolling chocks are provided in plural pieces,
A liquefied gas storage tank installation structure in which each anti-rolling chock is disposed at a position corresponding to the first to sixth internal reinforcement members. According to claim 1,
The anti-rolling choke is
Choke portion made of metal; and
A liquefied gas storage tank installation structure including a hull connection part provided between an upper part of the choke part and the hull to support the choke part, and made of a material with a thermal conductivity lower than that of metal. According to clause 6,
The choke portion is a liquefied gas storage tank installation structure including a plurality of flanges arranged to be spaced apart from each other in order to fix the hull connection portion. According to clause 6,
A liquefied gas storage tank installation structure wherein the surface of the choke portion in contact with the liquefied gas storage tank has a curvature corresponding to the curvature of the outer shape of the liquefied gas storage tank. A ship comprising the installation structure of the liquefied gas storage tank according to any one of claims 1 and 5 to 8.

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