KR101337645B1 - Liquefied natural gas storage tank - Google Patents

Liquefied natural gas storage tank Download PDF

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Publication number
KR101337645B1
KR101337645B1 KR1020110131984A KR20110131984A KR101337645B1 KR 101337645 B1 KR101337645 B1 KR 101337645B1 KR 1020110131984 A KR1020110131984 A KR 1020110131984A KR 20110131984 A KR20110131984 A KR 20110131984A KR 101337645 B1 KR101337645 B1 KR 101337645B1
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KR
South Korea
Prior art keywords
insulation
connection
board
storage tank
natural gas
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KR1020110131984A
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Korean (ko)
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KR20120013213A (en
Inventor
김대중
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삼성중공업 주식회사
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Priority to KR1020110131984A priority Critical patent/KR101337645B1/en
Publication of KR20120013213A publication Critical patent/KR20120013213A/en
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Publication of KR101337645B1 publication Critical patent/KR101337645B1/en

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Abstract

A liquefied natural gas storage tank is provided. A liquefied natural gas storage tank according to an exemplary embodiment of the present invention is located between an inner hull and a primary barrier of a liquefied natural gas storage tank and installed between two insulating boards adjacent to each other and the two insulating boards. And a connection board, wherein each of the two insulation boards is coupled to one side of the upper insulation member to be coupled to the upper insulation member and the primary barrier, which are arranged in parallel with the inner hull. The connection board includes a connection member arranged in parallel with the upper insulation member and a connection member protection plate coupled to one side of the connection member and arranged in parallel with the upper insulation member protection plate. Each of the upper insulation member protection plates and the connection member protection plates are coupled to each other so that the connection boards It is fixed in position between the board.

Description

[0001] LIQUEFIED NATURAL GAS STORAGE TANK [0002]

The present invention relates to a liquefied natural gas storage tank.

The liquefied natural gas storage tank of the liquefied natural gas carrier is formed such that the primary barrier, the upper insulation board, the secondary barrier and the lower insulation board are sequentially joined from the inside of the liquefied natural gas storage tank to the outside. At this time, the process of manufacturing a liquefied natural dew storage tank is fixed a plurality of lower insulating boards having the same thickness inside the outer wall of the storage tank of the hull, and then install a secondary barrier on the plurality of lower insulating boards, and on the secondary barrier It may be made of a process of installing the upper insulation board and the primary barrier.

Conventionally, the lower insulation board, the secondary barrier, and the insulation board, in which the upper insulation board is integrally joined, are adjacent to each other and bonded to the inner wall of the hull, and are assisted in the space between the upper secondary barrier and the upper insulation board above the lower insulation board. After installing the secondary barrier and the connecting board, the primary barrier was installed on the upper insulation board.

At this time, in order to install a connecting board between the adjacent upper insulating boards in the past, the auxiliary secondary barrier and the connecting board are bonded after the auxiliary secondary barrier is bonded on the main secondary barrier located above the lower insulating board. The connecting boards were positioned between the upper insulating boards by bonding with adhesive.

However, in the case of bonding and fixing the connection board on the secondary secondary barrier in this way, in order for the adhesive to be solidified to fix the connection board on the secondary secondary barrier, the connection board had to be fixed with an additional fixing device such as a setting for a long time. The installation of the connection board takes a long time, there was a problem that the work load of the worker increases.

The present invention is to provide a liquefied natural gas storage tank having a structure that can save the time to install a connection board between the upper insulation board.

The present invention seeks to provide a liquefied natural gas storage tank having a connection board that can be positioned in a simple structure between the upper insulation boards.

According to an aspect of the present invention, a liquefied natural gas comprising an inner hull (Inner Hull) and the primary barrier of the liquefied natural gas storage tank and includes two insulating boards adjacent to each other and a connection board installed between the two insulating boards A gas storage tank, wherein each of the two insulation boards includes an upper insulation member arranged side by side with the inner hull and an upper insulation member protection plate coupled to one side of the upper insulation member to be coupled to the primary barrier. The connection board may include a connection member arranged in parallel with the upper insulation member and a connection member protection plate coupled to one side of the connection member and arranged in parallel with the upper insulation member protection plate. The upper insulation member protection plate and the connection member protection plate are mutually coupled so that the connection board is connected to the two insulation beams. Is secured in position between the liquefied natural gas storage tank is provided.

In this case, the connection member protection plate includes a body portion formed on one side of the connection member and a protrusion in the lateral direction from the body portion, the outer peripheral surface of the upper insulating member protection plate seating that can be placed in contact with the one surface of the protrusion The protrusion may be formed, and the protrusion may be coupled to the seating part by a predetermined coupling means.

In this case, the coupling means may be an adhesive for bonding one surface of the protrusion and one surface of the seating portion to each other, or may be a bolt, screw or rivet structure that can be coupled to the seating portion through the protrusion.

According to another aspect of the present invention, two insulation boards disposed between an inner hull and a primary barrier of a liquefied natural gas storage tank and adjacent to each other, a connection board installed between the two insulation boards, and the two insulations A liquefied natural gas storage tank comprising a board and a coupling member for interconnecting the connection board, each of the two insulating boards coupled to the upper insulation member and the primary barrier arranged side by side with the inner hull. And an upper insulation member protection plate coupled to one side of the upper insulation member, wherein the connection board is coupled to one side of the connection member and the connection member arranged in parallel with the upper insulation member and the upper insulation member protection plate. A connecting member protection plate arranged side by side, and the coupling member is formed on one side of the connection member protection plate The first mounting portion and the two, the liquefied natural gas storage tank coupled to the first connecting board 2 by being simultaneously coupled to the receiving portions are provided on the two insulation boards are formed at a side of each insulation board.

At this time, the coupling member may have a plate shape having a thickness thinner than the connection member protection plate and the upper insulation member protection plate of the two insulation boards.

At this time, the coupling member may be formed to extend in one direction so that both ends can be coupled to the second seating portion formed in the upper insulating member protection plate of the two insulating boards.

In this case, the coupling member is formed in a pair, and the pair of coupling members are adjacent to the pair of first seating portions and the pair of first seating portions respectively formed at both end sides of the connection member protection plate. It may be formed so that the shape can be coupled to the second seating portion formed in the upper insulating member protection plate of the two insulating boards.

At this time, the coupling between the connection member protection plate and the coupling member, and the upper insulating member protection plate and the coupling member is made by a predetermined coupling means, and the predetermined coupling means is an adhesive or penetrates the protrusion. It may be a bolt, screw or rivet structure that can be coupled to the mounting portion.

In this case, the upper heat insulating member and the connection member may each have a rectangular parallelepiped shape.

In this case, each of the two insulation boards includes a lower insulation member disposed between the upper insulation member and the inner hull and a main secondary barrier formed between the upper insulation member and the lower insulation member, A part of the main secondary barrier formed on one surface of the lower heat insulating member is formed to contact the other side of the connection board, and an auxiliary secondary on a part of the main secondary barrier contacting the other side of the connection board. Barriers can be arranged.

At this time, the shock absorbing plate may be coupled to the other side of the connection board in contact with the auxiliary secondary barrier.

At this time, the shock absorbing plate may be an adhesive.

At this time, it may further include a release film installed on the lower side of the adhesive.

The shock absorbing plate may include a plate-shaped member of a flexible material.

The shock absorbing plate may be formed of a polyurethane foam member or a melanin foam member.

According to one embodiment of the present invention, the connection board can be simply fixed between the upper insulation board by directly coupling the connection member protection plate of the connection board to the upper insulation member protection plate of the upper insulation board.

In addition, the liquefied natural gas storage tank according to an embodiment of the present invention does not use an auxiliary member as a separate setting bar for fixing the connection board by bonding on the auxiliary secondary barrier, thereby reducing the connection board installation time and process. You can save.

1 is a partial perspective view showing the internal structure of a liquefied natural gas storage tank according to a first embodiment of the present invention.
2 is a front view of Fig.
3 is a perspective view of a connection board constituting the interior of the liquefied natural gas storage tank according to the first embodiment of the present invention.
4 is a front view showing a state in which the connecting board constituting the liquefied natural gas storage tank according to the first embodiment of the present invention is separated from the insulating board.
5 is an enlarged view of a portion A in FIG. 2.
6 is a partial perspective view showing the internal structure of the liquefied natural gas storage tank according to a second embodiment of the present invention.
7 is a perspective view illustrating a state in which a connection board constituting the liquefied natural gas storage tank according to the second embodiment of the present invention is separated from the insulation board.
8 is a partial perspective view showing the internal structure of a liquefied natural gas storage tank according to a third embodiment of the present invention.
9 is a perspective view illustrating a state in which a connection board constituting the liquefied natural gas storage tank according to the third embodiment of the present invention is separated from the insulation board.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

LNG storage tank according to an embodiment of the present invention, as well as LNG carrier or LNG RV (Regasification Vessel) vessel capable of propulsion with self-resistance, LNG FPSO (Floating, Production, Storage and Offloading) or LNG FSRU (Floating Storage) It can also be applied to floating offshore structures such as regasification units.

 1 is a partial perspective view showing the internal structure of a liquefied natural gas storage tank according to a first embodiment of the present invention. 2 is a front view of FIG. 1. 3 is a perspective view of a connection board constituting the interior of the liquefied natural gas storage tank according to the first embodiment of the present invention. 4 is a front view showing a state in which the connecting board constituting the liquefied natural gas storage tank according to the first embodiment of the present invention is separated from the insulating board. 5 is an enlarged view of a portion A in FIG. 2. 1 to 5 omit the illustration of the primary barrier located on the upper insulation board for the sake of simplicity of the drawings.

1 to 5, the liquefied natural gas storage tank 10 according to an embodiment of the present invention, the inner hull (Inner Hull) 2, the order of the inner hull (Inner Hull) 2 Lower furnace insulation board 24, secondary barriers 27 and 40, upper insulation board 21 and primary barrier (not shown) are arranged in sequence to seal and protect the interior of the liquefied natural gas storage tank 10 It is formed to.

In this case, in the present specification, the upper insulation board 21 is an insulation board positioned between the primary barrier and the secondary barrier, and the lower insulation board 24 is disposed between the secondary barrier and the inner hull 2. Means the insulation board to be located.

On the other hand, the secondary barrier includes a main secondary barrier 27 and an auxiliary secondary barrier 40. At this time, in the present specification, the primary secondary barrier 27 is a secondary barrier positioned on the lower insulating board 24, and may be formed of a thin plate-shaped member in which a plurality of metal or nonmetal plates are stacked.

In addition, the secondary secondary barrier 40 is located below the connection board 30 installed between two neighboring insulation boards 20 to connect the two primary secondary barriers 27 adjacent to each other. Means the car barrier. At this time, the secondary secondary barrier 40 may be formed of a plate-like member of the same or similar material as the primary secondary barrier (27).

On the other hand, the liquefied natural gas storage tank 10 according to an embodiment of the present invention, a plurality of insulation including the lower insulation board 24, the main secondary barrier 27 and the upper insulation board 21 in the manufacturing process In the state where the board 20 is fixed to the inner hull 2, the inner hull (by fixing the secondary secondary barrier 40 and the connecting board 30 between the upper insulation boards 21) is fixed. The lower insulation board 24, the secondary barrier and the upper insulation board 21 are installed on the inner hull) 2.

At this time, each of the plurality of insulating boards 20 is a lower insulating board 24 having a rectangular parallelepiped shape, the main secondary barrier 27 and the main secondary barrier 27 bonded to the upper surface of the lower insulating board 24. It is formed to include an upper insulating board 21 of a rectangular parallelepiped shape having a volume smaller than that of the lower insulating board 24.

At this time, the lower insulating board 24 is a lower insulating member 25 that can be formed of a foam material such as polyurethane foam and the lower insulating member protective plate installed on the lower side of the lower insulating member 25 as shown in FIG. It may consist of (26). The lower insulating member protection plate 26 may be formed of plywood made of wood, such as plywood.

As described above, the primary secondary barrier 27 may be formed of a thin plate-shaped member in which a plurality of metal or nonmetal plates are stacked, and may have the same area as the upper surface of the lower insulation board 24.

On the other hand, the upper insulation board 21 is an upper insulation member 22 which may be formed of a foam material such as polyurethane foam and an upper insulation member protective plate installed on the upper side of the upper insulation member 22 as shown in FIG. 23). At this time, the upper insulating member protection plate 23 may be formed of plywood made of wood, such as plywood.

Such a plurality of insulation boards 20 may be coupled on the inner hull by known coupling means, for example known means such as mastic and stud bolts and nuts.

At this time, between the lower insulation boards 24 of the insulation board 20 in a state where the plurality of insulation boards 20 are coupled on the inner hull 2, for example, polyurethane foam or foam foam. Filled by the filling member 50, such as a member may be formed so that the insulation between the lower insulation board 24 can be made.

 1 to 4, in a liquefied natural gas storage tank 10 according to an embodiment of the present invention, in a state in which a plurality of insulation boards 20 are coupled on an inner hull 2, After filling the space between the lower insulation boards 24 of the plurality of insulation boards 20 with the filling member 50, the secondary secondary barrier 40 and the connection board 30 between the neighboring upper insulation boards 21. It is formed to combine.

On the other hand, the connection board 30 is positioned between the adjacent upper insulating board 21 of the liquefied natural gas storage tank 10 according to an embodiment of the present invention.

In this case, referring to FIG. 3, the connection board 30 includes a connection member 34 and a connection member protection plate 32.

The connection member 34 may be a rectangular parallelepiped member formed of a material such as a polyurethane foam having heat insulating performance. The connection member 34 may be formed to have the same height as the upper insulation member 22.

In FIG. 3, the connecting member protection plate 32 is coupled to the upper surface of the connecting member 34. At this time, the connection member protection plate 32 may be formed of plywood made of a wood material having a predetermined thickness, such as plywood.

At this time, according to an embodiment of the present invention, the connecting member protection plate 32 is a predetermined length in the width direction from the body portion 32a and the body portion 32a corresponding to the width of the upper surface of the connecting member 34. It has the protrusion part 32b which protruded at both sides.

According to the exemplary embodiment of the present invention, the protrusion 32b is configured to couple the connection member protection plate 32 to the upper insulation member protection plate 23.

In more detail, the protrusion 32b has a thickness thinner than the body portion 32a as shown in FIG. 3, and is formed in a plate shape having a rectangular cross section, and extends in the longitudinal direction in the same manner as the body portion 32a. In the form of However, the present invention is not limited thereto, and the thickness and length of the body part 32a and the protrusion part 32b may be formed differently according to the position where the connection board 30 is installed in the inner hull 2.

In the present embodiment, the thickness of the protrusion part 32b is about half of the body part 32a. Coupling holes 39 are formed at both ends in the longitudinal direction of the protrusion part 32b. The coupling hole 39 is configured to provide a space for the fastening member 42 to couple the protrusion 32b with the upper insulating member protection plate 23. According to one embodiment of the present invention, a plurality of coupling holes 39 may be formed side by side in the longitudinal direction of the protrusion 32b.

On the other hand, referring to Figure 3, in the liquefied natural gas storage tank 10 according to an embodiment of the present invention, the shock absorbing plate 36 may be installed below the connection member 34.

The shock absorbing plate 36 applies pressure to the connecting member 34 through the primary barrier from the inside of the liquefied natural gas storage tank 10 with the connecting board 30 installed between the upper insulating boards 21. It is a component installed in the connecting member 34 to relax.

At this time, the shock absorbing plate 36 may be formed of a known foam member, for example, a polyurethane foam member, a melanin foam member, or the like, having a buffering performance of a known adhesive or a flexible material which may have a buffering performance in a solid state. Can be formed. At this time, the foam member forming the shock absorbing plate may be formed in a plate shape.

In this case, the adhesive used as the shock absorbing plate 36 may be used for fixing the connection board 30 to the secondary secondary barrier 40, but may be formed to have a cushioning function.

On the other hand, when an adhesive is used as the shock absorbing plate 36, by releasing a release film (not shown) on the lower side of the adhesive, the adhesive may be prevented from adhering to the secondary secondary barrier.

On the other hand, when the lower end of the connecting member 34 is formed in contact with the auxiliary secondary barrier 40 in a state in which the connecting board 30 is installed between the upper insulating boards 21, the installation of the shock absorbing plate 36 is May be omitted.

On the other hand, according to an embodiment of the present invention, the upper insulation member protection plate 23 of the upper insulation board 21 to be coupled to the protrusion 32b of the connection member protection plate 32 of the connection board 30 described above. A seating portion 23b is formed.

4 and 5, the mounting portion 23b formed on the upper heat insulating member protection plate 23 is formed to extend in the longitudinal direction at both ends of the upper heat insulating member protection plate 23 in the width direction.

The seating portion 23b has a thickness thinner than the body portion 23a positioned at the center of the upper insulation member protection plate 23 and is formed of a plate-shaped member having a rectangular cross section whose lower side is in contact with the upper surface of the upper insulation member 22. .

At this time, in the present embodiment, the seating portion 23b is formed to have a thickness of about half of the body portion 23a. The width of the seating part 23b is formed to have a length corresponding to the width direction length of the protrusion part 32b of the connection member protection plate 32. As shown in FIG.

On the other hand, the coupling hole 29 is formed at a position corresponding to the coupling hole 39 formed in the protrusion 32b of the connecting member protection plate 32 on the center side of the mounting portion 23b.

According to one embodiment of the present invention, when the connecting board 30 is to be coupled to the upper insulation board 21, the protrusion 32b of the connecting board 30 is placed on the seating portion 23b and the coupling means is provided. The connection board 30 can be fixed to the upper insulation board 21 by coupling the protrusion 32b to the seating portion 23b.

At this time, the coupling means is an adhesive that can be applied to the lower surface of the protrusion 32b and the upper surface of the seating portion 23b, or as shown in FIG. 4, the coupling hole 39 and the seating portion of the protrusion 32b. It may be a known fastening member 42 such as screws, bolts and rivets that can be coupled through the coupling hole 29 of 23b).

In the present embodiment, in describing the protrusion 32b and the seating portion 23b, the lower surface of the protrusion 32b and the upper surface of the mounting portion 23b have a rectangular shape extending in the longitudinal direction of the connection board 30. Although illustrated as being made, the protrusions 32b may be formed to protrude in the longitudinal direction from both sides of the body of the connection board 30.

In addition, the protrusion 32b may be formed in various shapes in addition to the rectangular shape, and the number and shape of the seating portions 23b may be formed in various numbers and shapes corresponding to the number and shape of the protrusions 32b.

The connection board 30 of the liquefied natural gas storage tank 10 according to an embodiment of the present invention has adhesive on the lower side of the connection board 30 to position the connection board 30 between the upper insulation boards 21. Rather than joining the auxiliary secondary barrier 40 and the connection board 30 by using the upper insulation is located above the connection member protection plate 32 and the upper insulation board 21 located on the connection board 30. By connecting the member protection plates 23 to each other, the connecting board 30 can be positioned between the upper insulating boards 21 in a simple manner.

6 is a partial perspective view showing the internal structure of the liquefied natural gas storage tank according to a second embodiment of the present invention. 7 is a perspective view illustrating a state in which a connection board constituting the liquefied natural gas storage tank according to the second embodiment of the present invention is separated from the insulation board. In describing the second embodiment, a detailed description of the same or similar components as those of the first embodiment will be omitted, and the second embodiment will be described based on the configuration that is different from the first embodiment.

6 and 7, the liquefied natural gas storage tank 10 ′ according to the second embodiment of the present invention has a coupling member 160 for fixing the connection board 130 between the upper insulation boards 121. ).

The coupling member 160 may be formed in a rectangular plate shape that is longer in the width direction than the connection board 130, and may be formed to have a thickness of about half the thickness of the connection member protection plate 132 of the connection board 130. .

The first mounting part 133 is formed at both ends of the connecting member protection plate 132 in the longitudinal direction to have a depth corresponding to the thickness of the coupling member 160 and extends in the width direction of the connecting board 130. do. In this case, a plurality of coupling holes 139 are formed in the first seating portion 133.

In addition, the coupling member 160 may be coupled to one end of the coupling member 160 to a widthwise end of the upper insulation member protection plate 123 of the upper insulation board 121 positioned at both sides of the connection board 130. The second seating portion 125 is formed to be stepped to have a depth corresponding to the thickness of the (). At this time, the plurality of coupling holes 129 are also formed in the second seating part 125. In this case, the first seating part 133 and the second seating part 125 may be formed in a rectangular shape, but are not limited thereto and may be formed in various shapes such as polygons or circles.

Meanwhile, the coupling member 160 is coupled to the first seating portion 133 of the coupling member protection plate 132 while the coupling member 160 is coupled to the connection member protection plate 132 and the upper insulation member protection plate 123. A plurality of coupling holes 169 are formed at positions corresponding to the coupling holes 129 formed in the second seating portion 125 of the hole 139 and the upper insulating member protection plate 123.

In the liquefied natural gas storage tank 10 ′ according to the second embodiment of the present invention, in the state where the connection board 130 is positioned between two upper insulation boards 121, the first portion of the connection member protection plate 132 is provided. By connecting the coupling member 160 on the seating portion 133 and the second seating portion 125 of the upper insulation member protection plate 123, the connection board 130 is formed to be fixed between the upper insulation board 121. .

At this time, the coupling member 160 is coupled to the coupling member 160 and the coupling member 160 that can be coupled through the coupling hole 169 of the coupling member 160 and the coupling hole 139 of the connection member protection plate 132. It is fixed to the connecting board 130 and the upper insulating board 121 by the fastening member that can be coupled through the coupling hole 125 of the hole 169 and the upper insulating member protection plate 123, or the coupling member 160 Connection board 130 by an adhesive that can be applied to the lower surface of the upper surface and the upper surface of the first seating portion 133 of the connection member protection plate 132 and the upper surface of the second seating portion 125 of the upper insulation member protection plate 123. And it can be fixed to the upper insulation board 121.

On the other hand, the connection board 130, which may be located between the upper insulation board 121 may be arranged in a plurality of the longitudinal direction of the upper insulation board 121, each connection board 130, the upper insulation board ( A plurality of second seating portions 125 may be formed at the end portion in the width direction of the upper insulation board 121 so as to be coupled to the 121.

In the second embodiment of the present invention, the connection board 130 is fixed between the two upper insulation boards 121 using two coupling members 160, but the number, shape, and length of the coupling members are variously changed. Can be.

8 is a partial perspective view showing the internal structure of a liquefied natural gas storage tank according to a third embodiment of the present invention. 9 is a perspective view illustrating a state in which a connection board constituting the liquefied natural gas storage tank according to the third embodiment of the present invention is separated from the insulation board. In describing the third embodiment, detailed descriptions of the same or similar components as those of the first and second embodiments will be omitted, and the third embodiment will be described mainly on the configuration distinct from the first and second embodiments. do.

The liquefied natural gas storage tank 10 ″ according to the third embodiment of the present invention includes a coupling member 190 for coupling the connection board 180 and the upper insulation board 121 similarly to the second embodiment. . At this time, the coupling member 190 is formed in a pair to be coupled to both side ends in the width direction of the connection board 180, respectively.

8 and 9, in the liquefied natural gas storage tank 10 ″ according to the third embodiment, first mounting portions 183 are formed at both ends in the width direction of the connection member protection plate 182 of the connection board 180. Is formed.

In addition, a second seating portion 125 is formed at an end portion in the width direction of the upper insulation member protection plate 123 of the upper insulation board 121.

In this case, the first seating part 183 and the second seating part 125 have a depth of half of the thickness of the connection member protection plate 182 and the upper insulation member protection plate 123 and are formed stepped in a quadrangular shape.

At this time, the first seating portion 183 and the second seating portion 125 may be formed in plural in the longitudinal direction of the connection board 180 and the upper insulation board 121, respectively, in this embodiment one connection Two first seating portions 183 are formed on both sides of the board 180 in the length direction of both sides of the connection board 180, and correspondingly, the upper insulation board 121 adjacent to the connection board 180 also corresponds to both sides in the length direction. Thus, two second seating portions 125 are positioned at the widthwise ends of the upper insulation board 121, respectively.

Meanwhile, a plurality of connection boards 180 that may be located between the upper insulation boards 121 may be arranged in a length direction of the upper insulation boards 121, and each connection board 180 may be formed of an upper insulation board ( A plurality of second seating portions 125 may be formed at the widthwise end of the upper insulation board 121 to be coupled to 121.

Meanwhile, the coupling member 190 is coupled to the first seating portion 183 of the connection member protection plate 182 while the coupling member 190 is coupled to the connection member protection plate 182 and the upper insulation member protection plate 123. A plurality of coupling holes 199 are formed at positions corresponding to the coupling holes 129 formed in the hole 189 and the second seating portion 125 of the upper insulating member protection plate 123.

The coupling member 190 of the liquefied natural gas storage tank 10 ″ according to the third embodiment of the present invention is a rectangular plate material that can be shape-fitted onto the first seating portion 183 and the second seating portion 125. It is made of a shape. In this case, the first seating part 133, the second seating part 125, and the coupling member 190 may be formed in a rectangular shape, but are not limited thereto and may be formed in various shapes such as a polygon or a circle.

At this time, the engagement of the first seating portion 183 and the second seating portion 125 and the coupling member 190 is similar to the first and second embodiments to a fastening member such as an adhesive, bolt, screw or rivet structure. It can be made by.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10 liquefied natural gas storage tank 20 insulation board
22 Upper insulation member 24 Lower insulation member
26 Main secondary barrier 28 Upper insulation shield
30 Connection board 32 Connection member shield
34 Connecting element 36 Shock absorber
40 Secondary secondary barrier 42 Fastening member
50 filling members

Claims (15)

  1. delete
  2. delete
  3. delete
  4. Two insulation boards disposed between the inner hull and the primary barrier of the liquefied natural gas storage tank installed inside the double wall hull and adjacent to each other, a connection board installed between the two insulation boards, and the two insulation boards; A liquefied natural gas storage tank comprising a coupling member for interconnecting the connection boards,
    Each of the two insulation boards includes an upper insulation member arranged side by side with the inner hull and an upper insulation member protection plate coupled to one side of the upper insulation member to be coupled to the primary barrier.
    The connection board includes a connection member arranged side by side with the upper insulation member and a connection member protection plate coupled to one side of the connection member and arranged in parallel with the upper insulation member protection plate,
    The connecting board is coupled to the two insulating boards by being coupled to the first seating part formed on one side of the connection member protection plate and the second seating part formed on one side of each of the two insulating boards.
    The coupling member is formed in a plate shape of a thickness thinner than the connecting member protective plate and the upper insulating member protective plate of the two insulating boards,
    The first seating portion and the second seating portion is a liquefied natural gas storage tank, characterized in that formed stepped to have a depth corresponding to the thickness of the coupling member.
  5. delete
  6. 5. The method of claim 4,
    The coupling member is a liquefied natural gas storage tank, characterized in that the elongated form in one direction so that both ends can be coupled to the second seating portion formed in the upper insulating member protection plate of the two insulating boards.
  7. 5. The method of claim 4,
    The coupling member is composed of a pair, and the pair of coupling members are respectively adjacent to the pair of first seating portions and the pair of first seating portions respectively formed on both end sides of the connection member protection plate. Liquefied natural gas storage tank, characterized in that formed so as to be conformally coupled to the second seating portion formed in the upper insulating member protection plate of the insulating board.
  8. 5. The method of claim 4,
    The coupling between the connection member protection plate and the coupling member, and the upper insulation member protection plate and the coupling member is made by a predetermined coupling means,
    And the predetermined coupling means is an adhesive or a bolt, screw or rivet structure to which the coupling member and the first seating portion and the coupling member and the second seating portion can be coupled.
  9. The method according to any one of claims 4 and 6 to 8,
    The upper insulating member and the connecting member are each liquefied natural gas storage tank, characterized in that formed in a rectangular parallelepiped shape.
  10. The method according to any one of claims 4 and 6 to 8,
    Each of the two insulation boards includes a lower insulation member disposed between the upper insulation member and the inner hull and a primary secondary barrier formed between the upper insulation member and the lower insulation member,
    Some surfaces of the main secondary barrier formed on one surface of the lower insulating member are in contact with the other side of the connection board,
    Liquefied natural gas storage tank, characterized in that the secondary secondary barrier is disposed on a portion of the main secondary barrier in contact with the other side of the connection board.
  11. 11. The method of claim 10,
    Liquefied natural gas storage tank, characterized in that the shock absorbing plate is coupled to the other side of the connection board in contact with the secondary secondary barrier.
  12. The method of claim 11,
    The shock absorbing plate is an liquefied natural gas storage tank, characterized in that the adhesive.
  13. 13. The method of claim 12,
    Liquefied natural gas storage tank further comprises a release film installed on the lower side of the adhesive.
  14. The method of claim 11,
    The shock absorbing plate is a liquefied natural gas storage tank including a plate-like member of a flexible material.
  15. 15. The method of claim 14,
    The shock absorbing plate is a liquefied natural gas storage tank, characterized in that formed of a polyurethane foam member or melanin foam member.
KR1020110131984A 2011-12-09 2011-12-09 Liquefied natural gas storage tank KR101337645B1 (en)

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KR1020110131984A KR101337645B1 (en) 2011-12-09 2011-12-09 Liquefied natural gas storage tank

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KR101455633B1 (en) * 2013-05-23 2014-10-30 삼성중공업 주식회사 Insulation structure of cargo tank for lng

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761493A (en) * 1993-08-20 1995-03-07 Dow Kakoh Kk Panel for heat insulation of extremely low temperature tank
KR100432101B1 (en) * 1995-10-05 2004-08-16 가즈트랑스포르 에 떼끄니가즈 Land-side tank for storing low-temperature liquid
JP2005256859A (en) * 2004-03-09 2005-09-22 Meisei Ind Co Ltd Heat insulation structure
KR20110020494A (en) * 2009-08-24 2011-03-03 삼성중공업 주식회사 Insulation structure for a lng carrier tank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761493A (en) * 1993-08-20 1995-03-07 Dow Kakoh Kk Panel for heat insulation of extremely low temperature tank
KR100432101B1 (en) * 1995-10-05 2004-08-16 가즈트랑스포르 에 떼끄니가즈 Land-side tank for storing low-temperature liquid
JP2005256859A (en) * 2004-03-09 2005-09-22 Meisei Ind Co Ltd Heat insulation structure
KR20110020494A (en) * 2009-08-24 2011-03-03 삼성중공업 주식회사 Insulation structure for a lng carrier tank

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