KR101337642B1 - Liquefied Natural Gas storage tank and method to manufacture the same - Google Patents

Liquefied Natural Gas storage tank and method to manufacture the same Download PDF

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Publication number
KR101337642B1
KR101337642B1 KR1020110136451A KR20110136451A KR101337642B1 KR 101337642 B1 KR101337642 B1 KR 101337642B1 KR 1020110136451 A KR1020110136451 A KR 1020110136451A KR 20110136451 A KR20110136451 A KR 20110136451A KR 101337642 B1 KR101337642 B1 KR 101337642B1
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KR
South Korea
Prior art keywords
reinforcing
storage tank
barrier
insulation
board
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KR1020110136451A
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Korean (ko)
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KR20120013233A (en
Inventor
남두현
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삼성중공업 주식회사
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Priority to KR1020110136451A priority Critical patent/KR101337642B1/en
Publication of KR20120013233A publication Critical patent/KR20120013233A/en
Application granted granted Critical
Publication of KR101337642B1 publication Critical patent/KR101337642B1/en

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Abstract

A liquefied natural gas storage tank and a method of manufacturing the same are disclosed.
Liquefied natural gas storage tank according to an embodiment of the present invention, a plurality of lower insulating boards are installed at intervals inside the hull of the liquefied natural gas storage tank, a plurality of upper insulating plates are installed at another intervals A first barrier disposed between the insulation board and the plurality of upper insulation boards and installed on the lower insulation boards to connect the upper insulation boards, the upper insulation boards and the connection boards, and a primary barrier provided with protruding wrinkles at intervals; A reinforcing member inserted into and fitted into the pleats, and a secondary barrier installed between the lower insulating board and the upper insulating board and between the lower insulating board and the connecting board, wherein the reinforcing member is formed of a base part consisting of a plate and a base part. Shrinkage prevention parts arranged at intervals along the longitudinal direction and forming the inner shape of the pleats of the primary barrier And a reinforcement and a guide provided on one side or both sides of the intersection provided between the shrinkage preventing portions and the cross section to increase rigidity in the longitudinal direction and guide another reinforcing member passing through the intersection.

Description

Liquefied Natural Gas storage tank and method to manufacture the same

The present invention relates to a liquefied natural gas storage tank and a manufacturing method thereof.

The LNG storage tank includes a primary barrier, an upper insulation board, a secondary barrier, a lower insulation board, and the like, which are disposed outward from the inside of the LNG storage tank, and are coupled to the inside of the hull.

The LNG storage tank combines a plurality of lower insulation boards inside the hull, installs a secondary barrier on the plurality of lower insulation boards, and installs an upper insulation board and a primary barrier on the secondary barrier. Is produced.

For example, a method of manufacturing a conventional LNG storage tank is as follows. First, the worker is coupled to the inner hull adjacent to each other the insulation board formed integrally with the lower insulation board and the main secondary barrier and the upper insulation board. And the worker installs the secondary secondary barrier and connecting board in the space between the main secondary barrier on the lower insulation board and the upper insulation board. And install the primary barrier on the upper insulation board and connecting board.

At this time, the primary barrier is provided with wrinkles at regular intervals in the horizontal and vertical directions. The pleats have a structure in which a surface facing the upper insulation board is open and protrudes inward of the liquefied natural gas storage tank. And a reinforcing member is disposed in the pleats. The worker arranges the reinforcing member in the space of the corrugated portion before the primary barrier is coupled to the upper insulation board, and then installs the primary barrier on the upper insulation board and the connection board.

At this time, since the reinforcement member and the primary barrier are arranged in an unfixed state, in the process of joining the primary barrier to the upper insulation board, the reinforcement member is dropped from the primary barrier or falls, resulting in poor workability and poor construction. This can happen.

Korean Patent Publication No. 10-2009-0018521 (2009. 02. 20. publication)

One embodiment of the present invention, the liquefied natural gas storage tank and its manufacturing method that can improve the workability when reducing the primary barrier and the reinforcing member having a corrugated portion to the upper insulation board to increase the quality by poor construction To provide.

According to one aspect of the invention, a plurality of lower insulating boards are installed at intervals inside the hull of the liquefied natural gas storage tank, a plurality of upper insulating boards are installed at another interval to the lower insulating board, the plurality of A primary barrier disposed between the upper insulation boards and installed on the lower insulation boards to connect the upper insulation boards, the first barrier provided on the upper insulation boards and the connection boards, and provided with protruding wrinkles at intervals; A reinforcement member inserted into and coupled to the second insulation member, and a secondary barrier installed between the lower insulation board and the upper insulation board and between the lower insulation board and the connection board,

The reinforcing member is a base portion made of a plate, the base portion is arranged at intervals along the longitudinal direction and the shrinkage preventing portion forming the inner shape of the pleats of the primary barrier, the crossing portion provided between the shrinkage preventing portion and There is provided a liquefied natural gas storage tank provided on one side or both sides of the intersection and including a reinforcement and a guide for increasing rigidity in the longitudinal direction and guiding another reinforcing member crossing the intersection.

The reinforcement and guide part may be provided by bending the side surface of the intersection part in a round shape or may be formed as a round part which is processed and installed in a round shape on the side part of the intersection part.

The shrinkage preventing portion may have a space provided therein and may have a semicircular cross section cut in a direction perpendicular to the longitudinal direction.

The intersection may have a protrusion protruding toward the primary barrier, and the protrusion may protrude in a longitudinal direction larger than the width of the reinforcing member.

The reinforcing member may couple the primary barrier to the upper insulation board and fix the fitting to the pleated portion provided on the primary barrier.

The corrugation part may protrude toward the inner wall of the liquefied natural gas storage tank and may be disposed to form an opening toward the upper insulating board and to maintain a gap and extend in a grid shape.

The shrinkage preventing portion of the reinforcing member is provided with an overlapping portion at one end, and the overlapping portion may be made larger than the size of the shrinkage preventing portion of another reinforcing member disposed adjacent thereto.

In addition, according to another aspect of the invention, the step of installing the lower insulation board, the primary secondary barrier, and the upper insulation board that is sequentially stacked between the interior of the hull and the primary barrier of the LNG storage tank, the Coupling a connecting board between adjacent upper insulating boards of the upper insulating boards, combining the upper barrier boards with the primary barriers having wrinkles on the connecting boards, and coupling the primary barriers. Thereafter, a method of manufacturing a liquefied natural gas storage tank including fitting the reinforcing member to the pleats of the primary barrier is provided.

One embodiment of the present invention can improve the workability by reducing the number of work by improving the workability by inserting a reinforcing member provided in the pleats provided on the primary barrier in the state that the primary barrier is combined on the upper insulation board can increase the quality. .

1 is a cross-sectional view of a part of a liquefied natural gas storage tank to illustrate an embodiment of the present invention.
2 is a view illustrating a primary barrier for explaining an embodiment of the present invention.
Figure 3 is a view showing the shape of the reinforcing member inserted into the pleats of the primary barrier to explain the embodiment of the present invention.
4 is a cross-sectional view taken along the line IV-IV of FIG. 3.
5 is a view showing another example of the reinforcing member according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5.
7 is a view showing another example of the reinforcing member of the embodiment of the present invention. to be.
8 is a view showing another example of the reinforcing member of the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth 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.

1 is a cross-sectional view for explaining an embodiment of the present invention, showing a part of a liquefied natural gas storage tank. The storage tank of liquefied natural gas includes a plurality of lower insulating boards 1, a plurality of upper insulating boards 3, a connecting board 5, a primary barrier 7, a reinforcing member 9, and a secondary barrier 11. ).

The plurality of lower insulation boards 1 includes a lower insulation member 13 and a lower insulation member protection plate 15. The lower heat insulating member protection plate 15 may be coupled to the inside S of the hull by epoxy mastic, and may be coupled by various fixing members including stud bolts.

The primary secondary barrier 19 is coupled to the upper portion of the lower insulating member 13. A plurality of upper insulating boards 3 are coupled to the upper portion of the main secondary barrier 19. The upper insulation board 3 includes an upper insulation member 21 and an upper insulation member protection plate 23. That is, the upper insulation member 21 is coupled to the upper portion of the main secondary barrier 19, and the upper insulation member protection plate 23 is coupled to the upper portion of the upper insulation member 21.

And the upper insulation board 3 is coupled to the connection board 5 between another upper insulation board (3) disposed adjacent. The connecting board 5 is coupled to the secondary secondary barrier 25 to the upper portion of the primary secondary barrier 19, the connecting board 5 is coupled to the upper portion of the secondary secondary barrier (25).

The connecting board 5 is coupled to the connecting member 27 coupled to the upper portion of the auxiliary secondary barrier 25 and the connecting member protection plate 29 coupled to the upper portion of the connecting member 27.

The shock absorbing plate 31 may be coupled to an upper portion of the upper insulation member protection plate 23 and the connection member protection plate 29. The primary barrier 7 may be coupled to the upper portion of the shock absorbing plate 31. In the exemplary embodiment of the present invention, an example in which the primary barrier 7 is coupled to the upper portion of the shock absorbing plate 31 is illustrated and described, but as another example, the shock absorbing plate 31 is omitted and the upper insulation member protecting plate 23 is provided. The primary barrier 7 may be directly coupled to the upper portion of the connection member protection plate 29.

And the lower heat insulating member 13, the upper heat insulating member 21, the connecting member 27 may be made of polyurethane foam.

In addition, in the description of the embodiment of the present invention, the upper insulation board 3 is an insulation board positioned between the primary barrier 7 and the secondary barrier 11, and the lower insulation board 1 is the secondary barrier 11. Means an insulation board located between the inner (S) of the hull.

In addition, the secondary barrier 11 includes a primary secondary barrier 19 and an auxiliary secondary barrier 25. And in the embodiment of the present invention, the primary secondary barrier 19 means a secondary barrier located on the upper surface of the lower insulating board (1).

In addition, the secondary secondary barrier 25 means a secondary barrier that is located on the upper side of the two neighboring lower insulating boards 1 and connects the two primary secondary barriers 19 adjacent to each other.

As shown in FIGS. 1 and 2, the primary barrier 7 is provided with a pleat 33. The pleats 33 extend in a lattice shape (horizontal and vertical directions when the horizontal plane is referred to).

The corrugation part 33 may protrude toward the inner wall of the liquefied natural gas storage tank and form an opening toward the upper insulation board 3. The pleats 33 may have an approximately semicircular cross section.

The reinforcing member 9 of the embodiment of the present invention has a primary barrier 7 coupled to the upper portion of the upper insulation member protection plate 23 of the upper insulation board 3 and the connection member protection plate 29 of the connection board 5 or Or in the state coupled to the upper portion of the shock absorbing plate 31 is fixed to the fitting coupling to the wrinkles (33).

Then, the primary barrier (7) is in a fixed state, and the operator works by fitting the reinforcing member (9) to the pleats (33) can reduce the labor maneuver to improve productivity, the reinforcing member (9) Even during the joining operation, the reinforcing member 9 may remain coupled to the pleats 33 without being separated from the primary barrier 7, thereby increasing quality.

Referring to the structure of the reinforcing member 9 of the embodiment of the present invention in more detail with reference to Figures 1, 3 and 4 as follows.

The reinforcement member 9 includes a base portion 91, a shrinkage preventing portion 93, an intersection portion 95, and a reinforcement and guide portion 97.

The base portion 91 is formed of a plate and has a long strip shape.

In addition, the shrinkage preventing portion 93 may be made of the same material as the plate, and is disposed at regular intervals along the length direction of the base portion 91. The shrinkage preventing portion 93 may have the same shape as the inner shape of the wrinkle portion 33 of the primary barrier 7.

Shrinkage prevention portion 93 of the embodiment of the present invention may be made of a semi-cylindrical cross section cut in a direction perpendicular to the longitudinal direction of the base portion 91. In addition, a space may be provided inside the shrinkage preventing portion 93.

The intersection portion 95 is a portion provided between the shrinkage preventing portions 93 described above. That is, the shrinkage preventing portions 93 are arranged at regular intervals along the longitudinal direction of the base portion 91 and an intersection portion 95 is provided between these shrinkage preventing portions 93. The intersection portion 95 may be fitted to the pleats 33 without causing the reinforcing members 9 to interfere with each other when the stiffening members 9 are inserted into the pleats 33 in directions perpendicular to each other. That is, the intersection portion 95 may mean the base portion 91 in which the shrinkage preventing portion 93 does not exist.

The reinforcement and guide portion 97 may be provided on one side or both sides of the intersection portion 95 and may be formed of a round portion 97a which is installed in a round shape on the side of the intersection portion 95 (FIGS. 3 and 4). Shown). The round part 97a may be easily fitted by an operator when fitting to the wrinkle part 33 by increasing the rigidity of the base part 91.

In addition, as another example of the embodiment of the present invention, the reinforcement and guide portion 97, as shown in Figs. 5 and 6, one side or both sides of the intersection portion 95 is processed into a round shape or processed by chamfering Can be.

On the other hand, Figure 7 is a view for explaining another example of an embodiment of the present invention, showing a reinforcing member (9). The reinforcing member 9 of the embodiment of the present invention can be used when intersecting with the reinforcing member 9 of the above-described embodiment. An example of the reinforcing member 9 of the embodiment of the present invention will be replaced by the same description as the description of the reinforcing member 9 described above and only the other parts will be described.

Referring to FIGS. 1 and 7, the reinforcing member 9 may have a protrusion 99 protruding by the crossing portion 95 being bent toward the primary barrier 7. The protrusion 99 may protrude from the bottom of the base 91 by a predetermined height h.

In addition, the protrusion 99 may be made larger than the width W formed by the base portion 91.

Meanwhile, referring to FIGS. 1 and 8, when the reinforcing member 9 is continuously fitted into the corrugation part 33, a part of the reinforcing member 9 overlaps and is stably disposed on the corrugation part 33. It is an illustration shown.

The reinforcing member 9 shown in FIG. 8 is provided with an overlapping portion 101 at one end. The overlapping portion 101 may be made larger than the size (diameter) of the shrinkage preventing portion 93 of the other reinforcing member 9. These overlapping portions 101 may overlap at regular intervals t in the longitudinal direction. Therefore, the overlapping portion 101 connects the reinforcing members 9 to be installed, thereby minimizing the positional movement of the reinforcing members 9 in the pleats 33.

Referring to the method of assembling the reinforcing member 9 of the present invention made as described above is as follows.

First, the lower insulation board 1, the primary secondary barrier 19, and the upper insulation board 3, which are sequentially stacked and installed between the interior S of the hull of the LNG storage tank and the primary barrier 7, are installed. Install).

And the connection board 5 is coupled between the adjacent upper insulating board (3) of the upper insulating board (3).

And the shock absorbing plate 31 may be coupled to the upper portion of the upper insulation board (3) and the connection board (5). In some cases, the coupling of the shock absorbing plate 31 may be omitted.

Subsequently, the primary barrier 7 is coupled to the upper insulation board 3 and the connection board 5 or the upper portion of the shock absorbing plate 31.

Then, the reinforcing member 9 is inserted and inserted into the pleats 33 provided on the primary barrier 7. For example, first insert the reinforcing member 9 of the shape as shown in FIG. 3 in one direction, and then fit the reinforcing member 9 of the shape as shown in FIG. Then, the reinforcing member 9 may be firmly fitted without interfering with each other by the protrusion 99 at the intersection portion 95. Further, when the reinforcing member 9 is inserted and the other reinforcing member 9 as shown in FIG. 7 in the orthogonal direction is provided, the reinforcing and guide parts provided at one end or both sides of the cross section 95 at the distal end of the reinforcing member 9. The round portion 97a of the 97 can be naturally moved without being caught while moving.

Therefore, the embodiment of the present invention is very easy to work to combine the reinforcing member (9) can improve the workability and reduce the number of work can improve the productivity. In addition, the embodiment of the present invention can be disposed in place without being separated from the primary barrier (7) in the process of assembling the reinforcing member (9) can improve the quality.

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, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

1. lower insulation board, 3. upper insulation board,
5. connecting board, 7. primary barrier,
9. Reinforcing member, 91. Base part,
93. shrink protection, 95. crossover,
97. reinforcements and guides, 99. protrusions,
101. Overlap,
11. Secondary barrier, 13. Lower insulation,
15. Lower insulation shield,
S. Interior of the hull, 19. Main secondary barrier,
21. upper insulation member, 23. upper insulation member protection plate,
25. secondary secondary barrier, 27. connecting member,
29. Connecting member protection plate, 31. Shock absorbing plate,
33. Wrinkles,

Claims (9)

  1. A plurality of lower insulating boards are installed at intervals inside the hull of the liquefied natural gas storage tank,
    A plurality of upper insulating boards installed at different intervals on the lower insulating boards;
    A connection board disposed between the plurality of upper insulation boards and installed on the lower insulation boards to connect the upper insulation boards;
    A primary barrier installed on the upper insulation board and the connection board and provided with pleated protrusions at intervals;
    A reinforcing member inserted and fitted into the crease, and
    And a secondary barrier installed between the lower insulation board and the upper insulation board and between the lower insulation board and the connection board.
    The reinforcing member
    A base made of a plate,
    Shrinkage prevention part is disposed at intervals along the longitudinal direction of the base portion and forming the inner shape of the wrinkles,
    An intersection provided between the anti-shrinkage portions and
    It is provided on one side or both sides of the intersection portion and includes a reinforcement and guide portion for increasing the stiffness in the longitudinal direction and for guiding another reinforcing member passing through the intersection portion,
    The reinforcement and guide portion
    Liquefied natural gas storage tank, characterized in that consisting of a round portion provided by bending the side of the intersection in a round shape or processed into a round shape on the side of the intersection.
  2. delete
  3. The method according to claim 1,
    The shrinkage preventing portion
    Liquefied natural gas storage tank, characterized in that the space is provided inside and the cross section cut in the direction perpendicular to the longitudinal direction has a semicircular shape.
  4. The method according to claim 1,
    The intersection is
    And a protrusion protruding toward the primary barrier, wherein the protrusion protrudes in a longitudinal direction than the width of the reinforcing member.
  5. The method according to claim 1,
    The reinforcing member
    Liquefied natural gas storage tank, characterized in that for coupling the primary barrier to the upper insulation board and fixed by fitting to the pleats provided on the primary barrier.
  6. The method according to claim 1,
    The pleats
    Liquefied natural gas storage tank, characterized in that protruding toward the inner wall of the liquefied natural gas storage tank is formed to form an opening toward the upper insulating board, the intervals and extend in a grid shape.
  7. The method according to claim 1,
    Shrinkage prevention part of the reinforcing member
    Overlap is provided at one end,
    The overlapped portion of the LNG storage tank, characterized in that made larger than the size of the shrinkage preventing portion of another reinforcing member disposed adjacent.
  8. Installing a lower insulation board, a main secondary barrier, and an upper insulation board, which are sequentially stacked and installed between the interior of the hull of the LNG storage tank and the primary barrier,
    Coupling a connection board between adjacent upper insulation boards of the upper insulation boards;
    Combining the primary barrier having a corrugation portion on the upper insulation board and the connection board;
    Fitting the reinforcing member to the pleats of the primary barrier after the step of coupling the primary barrier,
    The reinforcing member
    A base made of a plate,
    Shrinkage prevention portion is disposed at intervals along the longitudinal direction of the base portion to form the inner shape of the pleats of the primary barrier,
    An intersection provided between the anti-shrinkage portions,
    It is provided on one side or both sides of the intersection portion and includes a reinforcement and guide portion for increasing the stiffness in the longitudinal direction and for guiding another reinforcing member passing through the intersection portion,
    The reinforcement and guide portion
    Method for producing a liquefied natural gas storage tank, characterized in that consisting of a round portion provided by bending the side of the cross section in a round shape or processed into a round shape on the side of the cross section.
  9. delete
KR1020110136451A 2011-12-16 2011-12-16 Liquefied Natural Gas storage tank and method to manufacture the same KR101337642B1 (en)

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Application Number Priority Date Filing Date Title
KR1020110136451A KR101337642B1 (en) 2011-12-16 2011-12-16 Liquefied Natural Gas storage tank and method to manufacture the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110136451A KR101337642B1 (en) 2011-12-16 2011-12-16 Liquefied Natural Gas storage tank and method to manufacture the same

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KR101337642B1 true KR101337642B1 (en) 2013-12-05

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KR101617026B1 (en) 2013-12-27 2016-04-29 삼성중공업 주식회사 Cargo for liquefied gas
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KR101784835B1 (en) 2015-10-06 2017-10-12 삼성중공업 주식회사 Cargo for liquefied gas and fixing unit for paner used therein
KR101864152B1 (en) 2016-10-21 2018-06-05 삼성중공업 주식회사 Cargo for liquefied gas
KR20180087491A (en) 2017-01-23 2018-08-02 삼성중공업 주식회사 Cargo for liquefied gas
KR101988534B1 (en) 2017-05-25 2019-10-01 삼성중공업 주식회사 Barrier structure of liquefied gas cargo tank and installation method thereof
KR102020964B1 (en) 2017-12-22 2019-10-18 대우조선해양 주식회사 Method of finishing cargo insulation system for liquefied natural gas carrier, temporary finishing construction structure and finishing construction structure
KR102084995B1 (en) 2018-04-05 2020-03-05 삼성중공업 주식회사 Cargo for liquefied gas
FR3083789A1 (en) * 2018-07-13 2020-01-17 Gaztransport Et Technigaz Tank wall comprising a sealing membrane having a corrugation having a reinforced curviline portion
KR20200026360A (en) 2018-08-29 2020-03-11 삼성중공업 주식회사 Vessel stability device and load-out method using the same

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