KR20220148388A - A liquefied gas cargo tank including insulation structure - Google Patents

Abstract

An objective of the present invention is to provide a liquefied gas cargo hold equipped with a heat insulating structure body capable of improving the structure of the heat insulating structure body in the cargo hold, increasing the heat insulation performance, and improving the workability of the insulation panel construction work. According to the present invention, provided is a liquefied gas cargo hold equipped with a heat insulating structure body, which comprises: a plurality of insulating panels in which a recessed stepped portion is formed at the upper edge, a plug hole is formed through the stepped portion, so as to be bolted to an inner wall of a hull through the plug hole and connected and installed along the inner wall of the hull; a foam plug inserted into the plug hole to close the plug hole; insulating members interposed and installed in the connection portions between the plurality of insulating panels; and an insert panel which is inserted and installed in the stepped portion between the plurality of insulating panels to block a heat transfer passage that may be generated through a connection between the insulating panels or through the plug hole.

Description

Liquefied gas cargo hold with insulation structure {A LIQUEFIED GAS CARGO TANK INCLUDING INSULATION STRUCTURE}

The present invention relates to a liquefied gas cargo hold equipped with a thermal insulation structure, and more particularly, to a liquefied gas cargo hold equipped with a thermal insulation structure that can improve the thermal insulation performance and workability by improving the structure of the insulation structure in the cargo hold it's about

In general, liquefied natural gas is liquefied natural gas, which is one of fossil fuels, and the liquefied natural gas may be stored in a storage tank or the like in a cryogenic state.

Here, the storage tank for storing the liquefied gas is divided into an onshore storage tank installed on the ground or buried in the ground, or a mobile cargo hold installed in a transportation means such as a vehicle or a ship, depending on the installation location.

In addition, since liquefied natural gas has a risk of explosion when exposed to impact and is stored in a cryogenic state, a storage tank or cargo hold for storing liquefied natural gas may have a structure in which impact resistance and liquid tightness are firmly maintained.

1 shows a schematic cross-sectional view of a ship (1) in which a liquefied gas cargo hold 10 according to the prior art is installed.

Referring to FIG. 1 , the ship 1 in which the liquefied gas cargo hold 10 is installed is usually composed of an outer wall 16 forming an external shape and an inner wall 12 formed inside the outer wall 16 . It has a hull structure.

In addition, the interior of the hull, that is, the interior of the inner wall 12 may be divided by one or more bulkheads 14, and each internal space divided by the bulkhead 14 is a cryogenic liquid such as liquefied natural gas. It can be used as a cargo hold (10).

Here, the inner wall surface of the cargo hold 10 is sealed in a liquid-tight state by the barrier structure 30 . That is, the barrier structure 30 forms one storage space by integrally connecting a plurality of metal plates to each other by welding, and accordingly, the cargo hold 10 can store and transport liquefied natural gas without leakage. .

The insulation structure 20 is installed between the barrier structure 30 and the inner wall 12 or the partition wall 14 to form a heat insulation layer, and the insulation structure 20 blocks heat transfer between the outside and the inside of the cargo hold. can do.

Figure 2 is a cross-sectional view showing the structure of the liquefied gas cargo hold 10 according to the prior art, Figure 3 shows the connection portion between the insulating panel 21 according to the prior art and the plug hole (21a).

2, the liquefied gas cargo hold 10 according to the prior art includes a thermal insulation structure 20 and a barrier structure 30, wherein the barrier structure 30 is installed in a stacked manner on the insulation structure 20, It is formed in a double sealing wall structure including the primary sealing wall 32 and the secondary sealing wall 31, so that it is possible to completely seal the liquefied gas in the cargo hold to prevent leakage to the outside.

In addition, the heat insulation structure 20 may include a heat insulation panel 21 , a foam plug 22 , and a heat insulation member 23 .

Here, the heat insulation panel 21 is manufactured in a square shape, and a plurality of heat insulation panels 21 are arranged along the inner wall 12 of the hull and installed to form an overall heat insulation wall inside the cargo hold.

In addition, the insulation panel 21 has a plug hole 21a through which a stud bolt B welded to the inner wall 12 of the hull can be inserted, the stud bolt B through the plug hole 21a. By fastening the nut (N) to the heat insulation panel 21 can be installed on the inner wall 12 of the hull, the plug hole (21a) can be finished by inserting the foam plug (22).

In addition, a heat insulating member 23 such as glass wool may be interposed in a connection portion between a plurality of heat insulating panels 21 installed on the inner wall 12 of the hull.

Referring to FIG. 3 , in the case of the insulation panel 21 having a rectangular cross section of such a structure, even if the insulation member 23 is provided at the connection portion between the insulation panels 21, it is caused by construction errors or thermal deformation in the cargo hold. When a gap occurs due to the formation of a heat transfer passage passing through the heat insulating structure 20 in the vertical direction, there is a problem in that the heat insulating performance is deteriorated.

In addition, a heat transfer passage may be formed in a vertical direction through the plug hole 21a for bolting, and the heat insulation effect may be deteriorated due to the generation of the heat transfer passage.

In addition, when the thickness of the insulation panel 21 increases, the depth of the plug hole 21a penetrating vertically through the insulation panel 21 increases, so that when the insulation panel 21 is installed on the inner wall 12 of the hull, the plug The bolting operation through the hole 21a is inconvenient, and there is a problem in that the operation of inserting the foam plug 22 into the plug hole 21a is also difficult.

In addition, when the thickness of the insulation panel 21 is increased, there is a difficulty in the operation of installing the insulation member 23 at the connection portion between the insulation panels 21 .

Registered Patent No. 10-0644217 (Registration date: Nov. 2, 2006) "Liquid gas storage tank with improved insulation structure and manufacturing method therefor"

In the present invention, by improving the structure of the insulation structure in the liquefied gas cargo hold equipped with the insulation structure, specifically, the insulation structure in the cargo hold, the heat transfer passage generated in the plug hole of the insulation panel and the connection portion between the insulation panels is blocked to increase the insulation performance. It is intended to provide a liquefied gas cargo hold equipped with an insulation structure that can improve workability for insulation panel construction work.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

In order to solve the problems as described above, the present invention provides a step recessed portion formed on the upper edge, a plug hole penetrating the step portion is formed, and bolted to the inner wall of the hull through the plug hole, along the inner wall of the hull A plurality of insulation panels to be connected and installed, a foam plug inserted into a plug hole to close the plug hole, an insulation member installed to be respectively interposed in a connection part between a plurality of insulation panels, and a step portion between the plurality of insulation panels inserted and installed To provide a liquefied gas cargo hold equipped with an insulating structure including an insert panel that blocks a heat transfer passage that may be generated through a connection portion or a plug hole between the insulating panels.

In addition, the insulation panel is provided with an upper body narrower than the lower body in the upper portion of the lower body, a step portion is formed around the upper edge, and a plug hole is formed so as to pass through the lower body at the step portion. It provides a liquefied gas cargo hold.

In addition, the heat insulating member provides a liquefied gas cargo hold provided with a heat insulating structure interposed between the lower body of the heat insulating panel and the lower body of another adjacent heat insulating panel is installed.

In addition, the insert panel is inserted and installed to engage the stepped portion between the upper body of the insulating panel and the upper body of another adjacent insulating panel, and through the lower part of the insert panel, the upper end of the plug hole passing through the lower body, and between the lower body It provides a liquefied gas cargo hold equipped with an insulating structure that blocks the top of the connection part of the.

In addition, the insert panel is inserted and installed in the step portion between a pair of adjacent insulation panels, and is attached to one insulation panel among the pair of insulation panels to relieve stress concentrated in the connection part between the insulation panels. To provide a liquefied gas cargo hold provided with an insulating structure installed and not attached to the other insulating panel.

In addition, the heat insulation panel is formed in the form of a square plate, the step portion is exposed in the shape of "ㅁ" around the edge on a plane, and the adhesive for attaching the insert panel is applied along the perimeter of the exposed step portion in the shape of "a" It provides a liquefied gas cargo hold equipped with an insulating structure.

On the other hand, in another aspect of the present invention for solving the problems as described above, it is formed in a bent form to be provided at the corner of the inner wall of the hull, a recessed step portion is formed around the edge, and a plug hole passing through the step portion is formed. Formed and bolted to the corner of the inner wall of the hull through a plug hole, a plurality of corner insulation panels connected and installed along the corner of the inner wall of the hull, a foam plug inserted into the plug hole to close the plug hole, a plurality of corner insulation panels A heat transfer passage that is inserted and installed in a step portion between a corner insulating member installed to be respectively interposed and installed at a connection part between the corner insulating panels and a plurality of corner insulating panels connected along a corner, and may be generated through a connection part or a plug hole between the corner insulating panels It provides a liquefied gas cargo hold equipped with an insulating structure comprising a corner insert panel to block the.

A liquefied gas cargo hold provided with a heat insulating structure according to an embodiment of the present invention, when constructing a heat insulating panel on the inner wall of a hull, by installing an insert panel interlocked between a plurality of connected heat insulating panels and heat insulating panels to form a heat insulating structure, insert panel Through this, it is possible to block the heat transfer path generated in the connection part between the insulation panels and the plug hole of the insulation panel, thereby increasing the insulation performance.

In addition, when attaching the insert panel between the insulation panel and the insulation panel, by attaching it to only one insulation panel and installing it, it is possible to easily respond to the expansion or contraction of the insulation structure due to the temperature change in the cargo hold, so that the connection between the insulation panels It can relieve the stress concentrated in the area.

In addition, by forming a plug hole in the step portion of the insulation panel, the length of the plug hole can be formed shorter than that of the conventional insulation panel, thereby facilitating the bolting operation and the construction of the foam plug through the plug hole.

In addition, due to the step portion formed in the heat insulating panel, it is possible to reduce the side thickness of the heat insulating panel compared to the prior art, it is possible to easily install the heat insulating member in the connection portion between the heat insulating panels can improve workability.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art from the following description. will be.

1 is a schematic cross-sectional view of a ship installed with a liquefied gas cargo hold according to the prior art.
2 is a cross-sectional view showing the structure of a liquefied gas cargo hold according to the prior art.
3 is a view showing a connection portion and a plug hole between the insulating panels according to the prior art.
Figure 4 is a cross-sectional view showing the structure of the liquefied gas cargo hold according to the first embodiment of the present invention.
5 is a perspective view showing the structure of the heat insulating structure according to the first embodiment of the present invention.
6 is a cross-sectional view showing the installation structure of the insert panel according to the first embodiment of the present invention.
7 is a plan view showing an installation example of attaching the insert panel to the heat insulating panel according to the first embodiment of the present invention.
8 is a perspective view showing the structure of a heat insulating structure according to a second embodiment of the present invention.
9 is a plan view illustrating an installation example of attaching an insert panel to an insulation panel according to a second embodiment of the present invention.
10 is a cross-sectional view showing the structure of a corner portion of a liquefied gas cargo hold according to a third embodiment of the present invention.
11 is a perspective view showing the structure of a heat insulating structure according to a third embodiment of the present invention.

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

DETAILED DESCRIPTION The detailed description set forth below in conjunction with the appended drawings is intended to describe exemplary embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced.

In order to clearly explain the present invention in the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used for the same or similar components throughout the specification.

In an embodiment of the present invention, expressions such as “or” and “at least one” may indicate one of the words listed together, or a combination of two or more.

4 is a cross-sectional view showing the structure of the liquefied gas cargo hold 1000 according to the first embodiment of the present invention, Figure 5 is a perspective view showing the structure of the insulating structure 100 according to the first embodiment of the present invention did it

In the liquefied gas cargo hold 1000 of this embodiment, in constituting the heat insulating structure 100, the insert panel 140 between the heat insulation panel 110 and the heat insulation panel 110 installed in a plurality on the inner wall 12 of the hull. By installing the interlocking to configure the heat insulating structure 100, it is possible to increase the heat insulating performance, it is possible to effectively relieve the stress concentrated in the connection portion between the heat insulating panels (110).

At this time, the liquefied gas described in this embodiment may be used to encompass all liquefied gas fuels generally stored in a liquid state, such as liquid nitrogen, LPG, LPG, ethylene, ammonia, and the like.

Referring to FIG. 4 , the liquefied gas cargo hold 1000 according to the first embodiment of the present invention may include a thermal insulation structure 100 and a barrier structure 200 .

Here, the heat insulation structure 100 of the present embodiment may include a heat insulation panel 110 , a foam plug 120 , a heat insulation member 130 , and an insert panel 140 .

The insulation panel 110 is installed on the inner wall 12 of the hull to perform an insulation function to block heat transfer between the exterior and interior of the cargo hold, and in this embodiment, a structure different from the prior art to improve insulation performance and construction convenience The heat insulation panel 110 may be formed.

In the heat insulation panel 110 of the present embodiment, a recessed stepped portion 113 may be formed at an upper edge thereof, and a plug hole 114 penetrating the stepped portion 113 may be formed.

Specifically, referring to FIGS. 4 and 5 , the heat insulation panel 110 has an upper body that is narrower than the lower body on the upper part of the lower body and has a “凸” shape cross-section, and accordingly, around the upper edge. A step portion 113 may be formed.

In addition, as an example, in this embodiment, the circumference of the insulation panel 110 is formed in a square shape, and it shows that the upper body and the lower body of the insulation panel 110 are formed at the same height, and the construction design of the cargo hold Of course, the height of the upper body and the lower body of the heat insulating panel 110 may be different depending on the type of heat insulation panel 110 .

Such a heat insulating panel 110 is provided with a heat insulating material 111 having a cross section of a "凸" shape, and an upper plate 112a and a lower plate provided on the upper and lower surfaces of the heat insulating material 111 to protect the heat insulating material 111, respectively. (112b).

Here, the insulating material 111 may be made of polyurethane foam having excellent thermal insulation performance, etc., and the upper plate 112a and the lower plate 112b may be made of plywood having rigidity.

The heat insulation panel 110 configured as described above may be manufactured in a unit with a predetermined area, and a plurality of heat insulation panels 110 may be arranged along the inner wall 12 of the hull and installed to form an overall heat insulation wall inside the cargo hold.

In addition, a plug hole 114 into which the stud bolt B welded to the inner wall 12 of the hull can be inserted may be formed through the stepped portion 113 of the insulation panel 110 .

Here, in installing the insulation panel 110 on the inner wall 12 of the hull where the cargo hold is formed, the plug hole 114 of the insulation panel 110 is inserted into the stud bolt B welded to the inner wall 12 of the hull. Correspondingly, the insulation panel 110 is seated on the inner wall 12 of the hull, and then the insulation panel 110 is attached to the inner wall of the hull by fastening the nut N to the stud bolt B through the plug hole 114. (12) can be installed.

At this time, as the plug hole 114 formed in the insulation panel 110 of this embodiment is formed through the lower body of the insulation panel 110 in the step portion 113, the plug hole 114 compared to the conventional insulation panel. The depth of the can be shallow, thereby making it easier to bolt through the plug hole 114 in the process of installing the insulation panel 110 to the inner wall 12 of the hull.

In addition, when the insulation panel 110 is installed on the inner wall 12 of the hull, the plug hole 114 can be finished by inserting the foam plug 120 .

The foam plug 120 is formed in a shape corresponding to the plug hole 114 and may be made of a heat insulating material.

At this time, since the plug hole 114 formed in the insulation panel 110 of this embodiment has a shallower depth of the plug hole compared to the conventional insulation panel, the length of the foam plug 120 inserted into the plug hole 114 may also be shortened. Thereby, it is possible to more easily insert the foam plug 120 made of a flexible material into the plug hole 114 .

In addition, a heat insulating member 130 capable of filling the gap space may be interposed in a connection portion between a plurality of heat insulating panels 110 installed on the inner wall 12 of the hull.

At this time, in this embodiment, the heat insulating member 130 is installed in the connection portion between the lower body of the heat insulating panel 110 and the lower body of another adjacent heat insulating panel 110 by interposing the heat insulating member 130 in comparison with the prior art. installation work can be performed more easily.

As an example, as the heat insulating member 130, a heat insulating material such as glass wool, mineral wool, polyester filler, and polyurethane foam may be applied.

The insert panel 140 is inserted into the step portion 113 between the plurality of insulation panels 110 to block the heat transfer path that may be generated through the connection portion between the insulation panels 110 and the plug hole 114 . can

6 is a cross-sectional view showing the installation structure of the insert panel 140 according to the first embodiment of the present invention.

4 to 6 , the insert panel 140 may be formed in a rectangular block shape, and is inserted and installed in the step portion 113 to fill the step portion 113 between the interconnected heat insulation panels 110 . In this way, when the insert panel 140 is installed in the step portion 113, the upper surfaces of the insert panel 140 and the heat insulation panel 110 are located on the same plane to form the wall surface of the heat insulation structure 100. can

The insert panel 140 may include a pad body and a protective plate provided on the upper surface of the pad body, and the pad body may be formed of the same material as the heat insulating material 111 of the heat insulating panel 110 .

Specifically, as shown in FIG. 6 , in a state in which a plurality of heat insulating panels 110 are connected to each other on the inner wall 12 of the hull, a heat insulating member is disposed at a connection portion between the lower body of the heat insulating panel 110 adjacent to each other. 130 may be interposed and installed, and between the upper body of the heat insulation panel 110 adjacent to each other, the step portion 113 in the form of “└” and the step portion 113 in the form of “┘” are disposed to face each other. By being formed in a “└┘” shape, a groove may be formed inside the stepped portion 113 .

In addition, the insert panel 140 may be inserted and attached to the groove of the step portion 113 to be engaged, and at this time, the lower portion of the insert panel 140 is connected between the insulation panel 110 in which the insulation member 130 is interposed. By blocking the upper end of the region, it is possible to prevent a heat transfer passage penetrating the thermal insulation structure 100 through the connection portion between the thermal insulation panels 110 from being formed.

In addition, the lower portion of the insert panel 140 blocks the upper end of the plug hole 114 penetrating the lower body from the stepped portion 113 of the insulation panel 110 , and the insulation structure 100 through the plug hole 114 . ) can be prevented from forming a heat transfer passage passing through.

That is, in the case of a heat insulating panel having a normal rectangular cross section, even if a heat insulating member is provided at the connection portion between the heat insulating panels, when a gap is generated due to a construction error or thermal deformation in the cargo hold, a heat transfer passage passing through the heat insulating structure in the vertical direction may be formed, and a heat transfer passage may be formed in a vertical direction even through a plug hole for bolting, and thermal insulation performance may be deteriorated due to the occurrence of such a heat transfer passage.

Accordingly, in the present embodiment, the insert panel 140 is inserted into the stepped portion 113 between the plurality of heat insulation panels 110 and generated through the connection portion between the heat insulation panels 110 and the plug hole 114 . By blocking in advance the heat transfer path that can be formed, it is possible to increase the thermal insulation performance through the thermal insulation structure 100 .

In addition, in installing the insert panel 140 in the step portion 113 of the pair of insulation panels 110 interconnected in this embodiment, the lower portion of the insert panel 140 is the step difference of one insulation panel 110 . It can be installed by attaching it only to the part 113 , and through this, it is possible to relieve stress concentrated on the connection part between the insulation panels 110 .

Specifically, referring to FIG. 6 , in the installation process of the insert panel 140 , the adhesive (p) only on the bottom surface of the stepped part 113 of one heat insulation panel 110 among the pair of interconnected insulation panels 110 . ) is applied, and the insert panel 140 can be inserted and attached to the bottom surface of the stepped portion 113 of the other heat insulating panel 110 in a state where the adhesive p is not applied.

In this case, only a portion of the bottom surface of the insert panel 140 between the pair of heat insulating panels 110 may be attached to one heat insulating panel 110 .

Accordingly, when the heat insulating structure 100 is stretched or contracted according to a temperature change in the cargo hold, stress concentrated on the connection portion between the heat insulating panels 110 can be relieved.

7 is a plan view illustrating an installation example of attaching the insert panel 140 to the heat insulating panel 110 according to the first embodiment of the present invention.

Referring to FIG. 7 , in this embodiment, a square-shaped heat insulating panel 110 is installed on the inner wall 12 of the hull to be interconnected, and the step portion 113 formed around each heat insulating panel 110 is partially The adhesive (p) can be applied, and as an example, when viewed in a plan view, the adhesive in the form of “a” on the bottom surface of the stepped portion 113 exposed in the shape of “ㅁ” around each insulation panel 110 . (p) can be applied.

In this case, as the adhesive (p), a polyurethane adhesive or the like may be applied, and of course, various types of adhesives may be applied in addition.

In addition, in this state, by inserting the insert panel 140 in the form of a block into the step 113 between the heat insulation panel 110 and the heat insulation panel 110, the adhesive p is applied to the bottom surface of the insert panel 140. It may be attached to the bottom surface of the applied step portion 113 .

At this time, the insert panel 140 may be attached to only the step portion 113 of one heat insulation panel 110 between a pair of adjacent heat insulation panels 110 by means of the adhesive p, and thus the adhesive saving effect is also shown. can be promoted

With such a structure, it is possible to effectively relieve stress concentrated on the connection portion between the insulation panels 110 in the cargo hold, and through the insert panel 140 installed to be engaged between the insulation panel 110 and the insulation panel 110 . Since it is possible to easily block a heat transfer path that may be generated in the connection portion between the heat insulating panel 110 and the plug hole 114 , it is possible to increase the heat insulating performance of the heat insulating structure 100 .

On the other hand, referring to FIG. 4 , the barrier structure 200 provided in the liquefied gas cargo hold 1000 is installed on the upper portion of the insulation structure 100 , and the secondary sealing wall 210 , the spacer 220 and the primary A sealing wall 230 may be included.

That is, the secondary sealing wall 210 is installed on the insulating structure 100 , the primary sealing wall 230 is installed to be spaced apart from the secondary sealing wall 210 , and the secondary sealing wall 210 and 1 A spacer 220 for maintaining a gap between the sealing walls may be interposed between the car sealing walls 230 and installed therebetween.

On the other hand, Figure 8 is a perspective view showing the structure of the insulation structure 100' according to the second embodiment of the present invention, Figure 9 is an insert panel in the insulation panel 110' according to the second embodiment of the present invention. An example of installation for attaching 140 is shown in a plan view.

8 and 9 , the heat insulation structure 100 ′ according to the second embodiment of the present invention may include a rectangular heat insulation panel 110 ′, and as an example, two square heat insulation panels It is possible to form a rectangular heat insulating panel 110' by using a dog as a basic size.

Specifically, in this embodiment, rectangular heat insulation panels 110' are installed on the inner wall 12 of the hull to be interconnected, and the bottom surface of the step portion 113 formed in each heat insulation panel 110' is "a" You can apply the adhesive (p) along the perimeter in the form of ".

In this state, by inserting the block-shaped insert panel 140 into the step 113 between the heat insulating panel 110 ′ and the heat insulating panel 110 ′, the adhesive p is applied to the bottom surface of the insert panel 140 . It can be attached to the bottom surface of the applied step portion 113, whereby the insert panel 140 is a step portion 113 of one heat insulation panel 110' between a pair of adjacent heat insulation panels 110'. It can be attached only by the adhesive (p).

At this time, in this embodiment, the heat insulation structure 100' is formed using a rectangular heat insulation panel 110' having a larger unit area than a square heat insulation panel, so that when installing the heat insulation panel 110', insert There is an advantage that the panel 140 and the heat insulating member 130 can be reduced, and work efficiency can be increased.

On the other hand, Figure 10 is a cross-sectional view showing the structure of the corner portion of the liquefied gas cargo hold 1000 according to the third embodiment of the present invention, Figure 11 is the structure of the insulating structure 300 according to the third embodiment of the present invention. is shown in a perspective view.

Referring to FIGS. 10 and 11 , the third embodiment of the present invention relates to a thermal insulation structure 300 installed in a corner portion of a liquefied gas cargo hold 1000 , and includes a thermal insulation structure 300 and a reinforcing structure 400 . may include

Here, as the insulation structure 300 of this embodiment is installed in the corner portion of the liquefied gas cargo hold 1000 , the corner insulation panel 310 , the foam plug 320 , the corner insulation member 330 , and the corner insert panel 340 . ) may be included.

The corner insulation panel 310 is formed in a bent shape to be provided at the corner of the hull inner wall 12 , and is installed along the corner of the hull inner wall 12 to perform insulation of the corner portion of the cargo hold.

In addition, the corner insulation panel 310 has a recessed step 313 around the edge facing the inside of the cargo hold, and the step 313 has a stud bolt B welded to the corner of the hull inner wall 12. A plug hole 314 that can be inserted may be formed therethrough.

Accordingly, by inserting the plug hole 314 of the corner insulation panel 310 into the stud bolt B welded to the corner of the hull inner wall 12 correspondingly, the corner insulation panel 310 is inserted into the corner of the hull inner wall 12. Then, by fastening the nut (N) to the stud bolt (B) through the plug hole (314), the corner insulation panel (310) can be installed at the corner of the inner wall (12) of the hull.

In addition, when the corner insulation panel 310 is installed at the corner of the inner wall 12 of the hull, the foam plug 320 may be inserted into the plug hole 314 to be finished.

The corner insulating member 330 may be installed so as to be interposed in a connection portion between the plurality of corner insulating panels 310 to fill the gap space.

The corner insert panel 340 is inserted and installed in the step portion 313 between a plurality of corner insulation panels 310 connected and installed along the corners of the inner wall 12 of the hull, and a connection portion or plug between the corner insulation panels 310 . A heat transfer path that may be generated through the hole 314 may be blocked.

Specifically, the corner insert panel 340 may be formed of a block having a cross section corresponding to the corner "B", and fills the step 313 between the pair of interconnected corner insulation panels 310 . It may be inserted and installed in the step portion 313 to make it possible.

Such a corner insert panel 340 may include a pad body and a protective plate provided on the pad body.

In addition, in installing the corner insert panel 340 in the step portion 313 of the pair of corner insulation panels 310 interconnected in this embodiment, the corner insert panel 340 is installed on one side of the corner insulation panel 310. It can be installed by attaching only to the step portion 313 of the , and through this, it is possible to relieve the stress concentrated on the connection portion between the corner insulation panels 310 .

Accordingly, when the corner insulation structure 300 is stretched or contracted according to a temperature change in the cargo hold, stress concentrated on the connection portion between the corner insulation panels 310 can be relieved.

On the other hand, referring to FIG. 10 , the corner-side insulation structure 300 of the liquefied gas cargo hold 1000 is provided with a reinforcement structure 400 for corner reinforcement. This reinforcement structure 400 is a corner insulation panel 310 and Each of the corner insert panels 340 may be installed.

Specifically, the reinforcement structure 400 may include a corner reinforcement plate 410 , a corner sealing plate 420 , and a thermal insulation filler 430 .

Here, the corner reinforcing plate 410 may be installed to correspond to the corner-side insulating structure 300 in a bent form, and may be connected to the secondary sealing wall 210 .

In addition, the corner sealing plate 420 may be bonded to the inner surface of the bent corner reinforcement plate 410 .

In addition, the corner sealing plate 420 forms a double sealing structure together with the corner reinforcement plate 410 by maintaining a state spaced apart from the corner reinforcement plate 410 by a predetermined distance, and is formed on the upper portion of the secondary sealing wall 210 . It may be connected to the installed primary sealing wall 230 .

In addition, a space between the corner reinforcing plate 410 and the corner sealing plate 420 may be filled with a heat insulating filler 430 such as glass wool.

Meanwhile, in the cargo hold construction process, an auxiliary panel 500 installed through on-site measurement may be provided between the corner insulation structure 300 and the flat insulation structures 100 and 100 ′.

As described above, the liquefied gas cargo hold 1000 provided with a thermal insulation structure according to an embodiment of the present invention includes a plurality of connected thermal insulation panels 110 and By interlocking the insert panel 140 between the insulation panels 110 to configure the insulation structure 100 , the connection portion between the insulation panel 110 through the insert panel 140 and the plug hole of the insulation panel 110 . It is possible to block the heat transfer path generated in (114), it is possible to increase the thermal insulation performance.

In addition, when the insert panel 140 is attached between the heat insulation panel 110 and the heat insulation panel 110, by attaching it to only one heat insulation panel 110 and installing it, the heat insulation structure 100 due to the temperature change in the cargo hold By making it possible to easily respond to elongation or contraction, it is possible to relieve stress concentrated in the connection portion between the insulating panels 110 .

In addition, by forming the plug hole 114 in the step portion 113 of the insulation panel 110, the length of the plug hole 114 can be formed shorter than that of the conventional insulation panel, so that the plug hole 114 is passed through the plug hole 114. It is possible to facilitate the bolting operation and the construction of the foam plug 120 .

In addition, due to the step portion 113 formed in the heat insulation panel 110, it is possible to reduce the side thickness of the heat insulation panel 110 compared to the prior art, so that the heat insulation member 130 is attached to the connection portion between the heat insulation panels 110. Easy to install, workability can be improved.

Embodiments of the present invention disclosed in the present specification and drawings are merely provided for specific examples in order to easily explain the technical contents of the present invention and help the understanding of the present invention, and are not intended to limit the scope of the present invention.

Therefore, the scope of the present invention should be construed as including all changes or modifications derived based on the technical spirit of the present invention in addition to the embodiments disclosed herein are included in the scope of the present invention.

1000: liquefied gas cargo hold 100, 100', 300: insulation structure
110, 110': insulation panel 113: step part
114: plug hole 120, 320: foam plug
130: insulation member 140: insert panel
200: barrier structure 210: secondary sealing wall
220: spacer 230: primary sealing wall
310: corner insulation structure 330: corner insulation member
340: corner insert panel 400: reinforcement structure

Claims (8)

A plurality of heat insulation panels having a recessed step portion formed at an upper edge, a plug hole passing through the step portion formed, bolted to the inner wall of the hull through the plug hole, and connected along the inner wall of the hull;
a foam plug inserted into the plug hole to close the plug hole;
a heat insulating member installed to be interposed between the plurality of heat insulating panels, respectively; and
A liquefied gas cargo hold provided with a thermal insulation structure including an insert panel inserted into the stepped portion between the plurality of insulation panels to block a heat transfer passage that may be generated through a connection portion between the insulation panels or the plug hole.
The method of claim 1,
The insulation panel,
A liquefied gas having an upper body narrower in width than the lower body is formed on the upper portion of the lower body to form a stepped portion around the upper edge, and the plug hole is provided with an insulating structure formed so as to pass through the lower body at the step portion cargo hold.
3. The method of claim 2,
The insulation member,
A liquefied gas cargo hold provided with an insulating structure interposed between the lower body of the insulating panel and the lower body of another adjacent insulating panel.
4. The method of claim 3,
The insert panel,
The upper body of the insulation panel is inserted and installed to engage the step portion between the upper body of another adjacent insulation panel,
A liquefied gas cargo hold provided with an insulating structure for blocking the upper end of the plug hole passing through the lower body through the lower portion of the insert panel, and the upper end of the connection portion between the lower body.
The method of claim 1,
The insert panel,
Doedoe is inserted into the step portion between a pair of adjacent insulation panels, and is attached to one insulation panel among the pair of insulation panels, and the other insulation is installed in order to relieve stress concentrated on the connection portion between the insulation panels. A liquefied gas cargo hold equipped with an insulating structure that is not attached to the panel.
The method of claim 1,
The insulation panel,
Formed in the form of a square plate, the step portion is exposed in the form of "ㅁ" around the edge on a plane, and the adhesive for attachment of the insert panel is applied in the shape of "a" along the perimeter of the exposed step portion. Equipped with liquefied gas cargo hold.
It is formed in a bent form to be provided at the corner of the inner wall of the hull, a recessed step is formed around the edge, and a plug hole passing through the step is formed, and is bolted to the corner of the inner wall of the hull through the plug hole. A plurality of corner insulation panels that are connected and installed along the corners of the inner wall of the hull;
a foam plug inserted into the plug hole to close the plug hole;
a corner insulating member interposed in each of the connecting portions between the plurality of corner insulating panels and installed; and
Insulation comprising a corner insert panel which is installed in a stepped portion between the plurality of corner insulation panels connected along the corner to block a heat transfer passage that may be generated through a connection portion between the corner insulation panels or the plug hole Liquefied gas cargo hold with structure.
8. The method of claim 7,
The corner insert panel,
It is inserted and installed in the step portion between a pair of adjacent corner insulation panels, and is attached to one corner insulation panel among the pair of corner insulation panels to relieve stress concentrated on the connection part between the corner insulation panels. A liquefied gas cargo hold equipped with an insulating structure that is not attached to the other corner insulation panel.

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