KR20150129889A

KR20150129889A - Cargo barrier structure

Info

Publication number: KR20150129889A
Application number: KR1020140056352A
Authority: KR
Inventors: 이종규; 양진혁; 박소영
Original assignee: 삼성중공업 주식회사
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2015-11-23
Also published as: KR101617029B1

Abstract

A cargo hold barrier structure is disclosed. The present invention provides a cargo hold barrier structure, comprising: a lower heat insulating board including a lower protective plate and a lower heat insulating member arranged on the upper portion of the cargo hold inner wall in a plurality of rows and columns; A secondary barrier disposed above the lower heat-insulating board to cover a space formed between the lower heat-insulating boards on both sides; And an upper insulating board interposed between the secondary barrier and the primary barrier, the upper insulating board including an upper shield and an upper insulating member at a lower portion thereof, wherein the lower insulating board includes a lower auxiliary And a fixed piece having a stud bolt vertically fixed is provided on a central portion of the lower sub-panel, and the secondary barrier is connected to another secondary barrier neighboring the stud bolt.

Description

Cargo barrier structure {CARGO BARRIER STRUCTURE}

The present invention relates to a cargo hold barrier structure.

The barrier structure of a vessel cargo hold carrying a cryogenic fluid is typically a structure in which a primary barrier, an upper insulation board, a secondary barrier and a lower insulation board are sequentially combined. This is to prevent further leakage of the fluid in the secondary barrier if there is a small leakage of the cryogenic fluid in the primary barrier.

For the cargo hold barrier installation, a lower insulation board is typically fixed to the cargo hold inner wall and a primary secondary barrier is installed above the lower insulation board. Next, an auxiliary secondary barrier is installed so as to partially overlap the upper surface of the primary secondary barrier on both sides to cover the space formed between the lower insulating boards. Next, an upper insulation board and a primary barrier are installed on the upper part of the secondary barrier. Here, the lower insulation board, the main secondary barrier, and the upper insulation board may be integrally formed and installed above the inner wall of the cargo hold.

However, the conventional hold wall structure has a long welding length between the primary secondary barrier and the secondary secondary barrier, so that it takes a lot of time to install it, and it is technically difficult to install. As a related art, refer to Korean Patent Laid-Open No. 10-2012-0013207 (published on February 14, 2012).

Korean Patent Publication No. 10-2012-0013207 (2012.02.14. Open)

An embodiment of the present invention is to provide a cargo hold barriers structure capable of efficiently installing a cargo hold barriers.

According to an aspect of the present invention, there is provided a bottom heat insulating board comprising: a lower insulating board and a lower heat insulating member disposed on the upper portion of the inner wall of the cargo hold in a plurality of rows and columns; A secondary barrier disposed above the lower heat-insulating board to cover a space formed between the lower heat-insulating boards on both sides; And an upper insulating board interposed between the secondary barrier and the primary barrier, the upper insulating board including an upper shield and a lower upper insulating member, wherein the lower insulating board is disposed between the secondary barrier and the lower insulating member Wherein the stud bolt is provided with a fixing bolt fixed vertically on the central portion of the lower sub-panel, and the secondary barriers include a cargo barriers connected to other neighboring secondary barriers around the stud bolt, Structure can be provided.

The secondary barrier may form a joint surface welded to the fixing piece at a peripheral portion corresponding to a position where the stud bolt is installed, and the joint surface may be joined to the fixing piece in a circular welding manner.

The joint surfaces formed at both ends of the joint surfaces form a semicircular groove and form a circular shape with the joint surfaces of the other secondary walls adjacent to each other around the stud bolt, and the joint surfaces formed at the corners are chamfered . &Lt; / RTI >

The secondary barrier may be provided in a shape of a corrugated shape covering a space formed between the lower heat insulating boards.

The lower heat-insulating board may have a predetermined thickness and a square shape having the same width and the same length.

The secondary barrier may have a transverse length equal to the transverse length of the lower insulation board and a vertical length of three times the longitudinal length of the lower insulation board.

The upper heat insulating board may be disposed on both sides of the lower heat insulating board, and may be disposed at an upper portion of the secondary wall in such a manner that corner portions are coupled to the stud bolts.

Wherein the upper heat insulating board further comprises an upper sub panel interposed between the upper heat insulating member and the secondary wall, wherein each corner of the upper heat insulating board has an inner hole formed therein, Is fastened to the stud bolt protruding toward the inner hole through the upper sub-panel, and the washer can press the upper sub-panel by tightening the nut.

And a connection board interposed in a space formed between the upper heat insulation boards, wherein the connection board can be disposed on the same plane as the upper insulation board.

The upper insulating board and the connecting board are inserted into coupling grooves formed between adjacent upper surfaces of the upper insulating board and the connecting board. One of the opposite ends is fixed and the other presses the upper insulating board or the connecting board. And an anchor plate for binding the connection board.

The cargo hold barrier structure according to an embodiment of the present invention enables an efficient cargo hold barrier installation.

In addition, it is possible to overcome the limitations of conventional barrier arrangements using the primary secondary barrier and the secondary secondary barrier, and to install the secondary barrier easily and efficiently.

In addition, the horizontal and vertical lengths of the lower heat-insulating board are formed in accordance with the same set dimensions, and the secondary walls are connected to each other around the stud bolts vertically fixed to the fixing pieces provided on the center of the lower heat- By installing the upper insulation board in such a manner that the corner portions of the upper insulation board are combined, the cargo barrier can be effectively installed with a small number of people and time.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view of a vessel cargo hold wall structure according to an embodiment of the present invention.
Fig. 2 is a perspective view of the lower insulation board arrangement of the barrier structure of Fig. 1. Fig.
FIG. 3 is a perspective view illustrating a state in which a secondary barrier is provided on the lower heat-insulating board of FIG. 2. FIG.
FIG. 4 is a perspective view illustrating a state in which an upper heat insulating board is installed on the upper part of the secondary barrier shown in FIG. 3. FIG.
FIG. 5 is a cross-sectional view illustrating a coupling relationship between the upper and lower insulating boards of FIG. 4; FIG.
FIG. 6 is a perspective view illustrating a state in which a connection board is installed between the upper heat insulating boards of FIG.
FIG. 7 is an enlarged view of the upper protection plate and the strip member provided on the upper surface of the connection protection plate shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other forms. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

Referring to FIG. 1, a barrier structure of a vessel cargo hold that stores a cryogenic fluid (e.g., liquefied natural gas (LNG)) according to an embodiment of the present invention includes a lower insulation board 110, a secondary barrier 120, A board 130 and a connection board 135.

The lower insulation board 110 is arranged in a plurality of rows and columns in the upper part of the inner wall of the cargo hold and has a lower protection plate 111, a lower insulation member 112, And a lower sub-panel (113). The lower heat-insulating board 110 may be formed as a unitary unit and arranged side by side on the inner wall of the cargo hold. The lower heat-insulating board 110 may have a predetermined thickness and may have a square shape having the same width and the same length. For example, the lower insulating board 110 may be manufactured to have a size of 1 m having the same length and width.

The lower protection plate 111 may be fixed to the inner wall of the cargo hold by a mastic, a stud bolt or the like. The lower protection plate 111 can be made of, for example, a material such as plywood. The lower heat insulating member 112 is disposed on the lower protective plate 111 and is made of a polyurethane foam (PUF), a reinforced polyurethane foam (RPUF, Reinforced PUF) or the like to protect the hull from the cryogenic fluid can do. The lower heat insulating member 112 may be bonded to the upper portion of the lower protective plate 111 by an adhesive (e.g., glue or the like).

Referring to FIG. 2, a fixing piece 210 having a stud bolt 211 vertically fixed is provided on a central portion of the lower sub-panel 113. The fixing piece 210 may be made of a metal material including, for example, stainless steel or the like. The fixing member 210 may be coupled to the coupling groove 113a formed in the lower sub-panel 113 and fixed by a fastening member 2 such as a rivet or the like. The fixing piece 210 may be formed in a circular shape. The lower sub-panel 113 may be made of plywood or the like.

3, the secondary barrier 120 is disposed on the lower insulation board 110 to cover a space formed between the lower insulation boards 110 on both sides of the lower insulation board 110, And are arranged side by side to be connected to the other secondary barrier 120. Although not shown, a filling member such as a glass wool may be inserted into the space formed between the lower heat insulating boards 110. However, the filling member may be omitted when the neighboring lower heat insulating boards 110 are arranged closely to each other or when the lower heat insulating boards 110 are closely bundled to be integrally manufactured.

The secondary barrier 120 forms bonding surfaces 120a and 120b to be welded (W, see FIG. 5) to the fixing piece 210 at a peripheral portion corresponding to the position where the stud bolt 211 is installed. At this time, the joining surfaces 120a and 120b may be joined to the fixing piece 210 in a circular welding manner. The joining surfaces 120a formed at both ends of the joining surfaces 120a and 120b form a semicircular groove so that the joining surfaces 120a of the adjacent secondary walls 120 adjacent to the stud bolts 211, And the joint surface 120b formed at the corner may be chamfered and formed obliquely inclined. The periphery of the neighboring secondary barrier 120 can be partially welded to each other with the stud bolt 211 as a center.

In the conventional hold wall structure, the lower insulation board is generally formed in a rectangular shape, and accordingly, the length of welding between the main secondary barrier and the auxiliary secondary barrier is long, There were difficult aspects. The lower insulation board 110 may be manufactured in the above-described manner and disposed above the inner wall of the cargo hold, and the secondary barrier 120 may be disposed thereon by the above-described method. In addition, it is possible to overcome the limitations of conventional barrier arrangements using the primary secondary barrier and the auxiliary secondary barrier, and uniformly install the secondary barrier 120 of a single product easily and efficiently.

The secondary barrier 120 may have a portion 120c covering a space formed between the lower heat insulating boards 110 in a corrugated shape having a downward convex shape. This is to effectively cope with heat shrinkage due to the cryogenic fluid. The secondary barrier 120 may have a lateral length equal to the lateral length of the lower insulating board 110 and a vertical length equal to three times the vertical length of the lower insulating board 110. Through this, the secondary barrier 120 can cover four longitudinally arranged lower heat-insulating boards 110 and two laterally arranged lower heat-insulating boards 110. For example, the secondary barrier 120 may have a length of 1 m and a length of 3 m. The secondary barrier 120 may be composed of a plurality of sheets made of a metal material such as stainless steel, aluminum, brass, zinc, or the like. As another example, a composite sheet made of a metal sheet and a fiber reinforced composite material may be provided.

4, the upper insulation board 130 is interposed between the secondary barrier 120 and the primary barrier (not shown) and includes an upper protection plate 131 and an upper insulation member 132 below the upper protection plate 131 . The upper insulating board 130 may have a predetermined thickness and may have the same length and width. In addition, the upper heat insulating board 130 may be formed in the same shape and size as the lower heat insulating board 110.

The upper protection plate 131 may be made of a material such as plywood. The upper heat insulating member 132 may be made of a polyurethane foam material, a reinforced polyurethane foam, or the like to protect the hull from the cryogenic fluid. The primary barrier described above is in direct contact with the cryogenic fluid and can be made of a metal material such as stainless steel (SUS) or the like. The upper insulating board 130 is disposed on the lower insulating board 110 on both sides and is disposed at a predetermined interval on the secondary barrier 120 in such a manner that the corner portions are coupled to the stud bolts 211 . As shown in FIG. 4, the upper heat insulating board 130 covers two lower heat insulating boards 110 on both sides, and each corner is connected to the stud bolts 211 of the lower heat insulating board 110 . Accordingly, the space formed between the lower insulating boards 110 is covered by the upper insulating board 130, thereby preventing the leakage of the cryogenic fluid and improving the heat insulating effect.

5, the upper insulating board 130 includes an upper auxiliary panel 134 interposed between the upper insulating member 132 and the secondary barrier 120, an upper auxiliary panel 134 and a secondary barrier 120 To protect the cargo barrier walls from sloshing shocks caused by liquefied gas stored in the interior of the cargo hold. The shock absorbing layer 133 may be omitted in another example. The upper sub-panel 134 may be made of plywood or the like. The shock absorbing layer 133 may be made of, for example, melamine foam as a foam material. Melamine foam is an open type foam based on amino resin type melamine resin, which not only absorbs impact but also has excellent heat insulation performance. However, the present invention is not limited to this, and the shock absorbing layer 133 may be made of various materials capable of protecting the cargo barrier from the sloshing shock caused by the liquefied gas stored in the cargo hold. The upper insulating board 130, the upper auxiliary panel 134, and the impact absorbing layer 133 may be integrally formed.

Each of the corners of the upper insulating board 130 is formed with an inner hole 130a so that the washer 212 and the nut 213 inserted through the inner hole 130a are inserted into the impact absorbing layer 133 and the upper auxiliary panel 134, And the washer 212 presses the upper sub-panel 134 by tightening the nut 213. The nut 213 is fastened to the stud bolt 211 protruding toward the inner hole 130a through the through- A plug member (not shown) filled with a foam or the like may be disposed in the inner hole 130a and may be finished by a cover (not shown) made of plywood or the like.

Referring to FIG. 6, the connection board 135 is interposed in a space formed between the upper heat insulation boards 130. Thereby, a space formed between the lower heat insulating boards 110, which is not covered by the upper insulating board 130, is covered by the connecting board 135. The connection board 135 is sandwiched between the upper insulation boards 130 and bonded to the neighboring upper insulation board 130 by an anchor plate 150 to be described later. The connection board 135 is sandwiched between the upper heat insulation boards 130 in a form of covering two lower insulation boards 110 on both sides. FIG. 6 shows a state in which the understanding connecting board 135 is not completely filled. The state in which the connection board 135 has been installed is described above with reference to FIG.

The connection board 135 includes a connection protection plate 136 and a connection insulation member 137 below the connection protection plate 136 so as to be coplanar with the upper insulation board 130. Although not shown, when the upper heat insulating board 130 further includes the shock absorbing layer 133 and the upper sub-panel 134 so that the connecting board 135 is coplanar with the upper insulating board 130, And may further include corresponding members respectively. At this time, each member may be made of the same material and thickness as the impact absorbing layer 133 and the upper sub-panel 134.

The connection protection plate 136 and the connection insulation member 137 may be made of the same material as the upper protection plate 131 and the upper insulation member 132, respectively. At this time, the upper insulating board 130 and the connecting board 135 are inserted into grooves formed on one side surface of the upper insulating board 130 and one side of the connecting board 135. Either one of the opposite ends is fixed and the other is connected to the upper insulating board 130 and the connecting board 135 An anchor plate 150 may be provided to bind the upper insulating board 130 and the connecting board 135 in a manner to press one of them. For example, when one side of the anchor plate 150 is coupled to the upper heat insulating board 130 by a fastening member such as a rivet or the like, the other side of the anchor plate 150 presses the neighboring connecting board 135.

6 and 7, strip members 160 and 161 are provided in grooves formed in the upper protection plate 131 and the connection protection plate 136 so as to be movable in accordance with the expansion and contraction of the primary barrier. 7 (a) and 7 (b) show a state in which the strip members 160 and 161 are fastened to the grooves formed in the upper protective plate 131 for the convenience of explanation. A primary barrier is disposed above the strip members 160 and 161 and a fixed strip member 161 disposed at the center of the upper protective plate 131 may be fixed so as not to be slid. The other strip member 160 is supported by the auxiliary plate 165 in which the fastening member 2 is fastened through the through hole H1 in such a manner that both ends of the strip member 160 are pressed from above, And can be slid according to the movement of the primary barrier which expands and contracts. At this time, the primary barrier is installed in such a manner as to press the upper part of the slidably installed strip member 160, so that the strip member 160 can slide together with the contraction expansion of the primary barrier. The strip members 160 and 161 may be made of, for example, stainless steel or the like. A binding member (not shown) such as a bolt or the like is fastened to the thread hole H2 of the auxiliary plate 165. When the wall of the cargo hold is installed in the longitudinal direction, the strip member 160, The strip member 160 can be temporarily fixed so as not to slide downward by a load.

The foregoing has shown and described specific embodiments. However, it is to be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the scope of the technical idea of the present invention described in the following claims It will be possible.

110: lower insulation board 111: lower protection board
112: lower insulation member 113: lower sub-panel
120: secondary barrier 130: upper insulation board
131: upper protection plate 132: upper insulation member
133: shock absorbing layer 134: upper auxiliary panel
135: connection board 136: connection board
137: connection insulating member 150: anchor plate
160, 161:

Claims

A lower insulation board arranged side by side in a plurality of rows and columns above the inner wall of the cargo hold and including a lower protection plate and a lower insulation member at an upper portion thereof;
A secondary barrier disposed above the lower heat-insulating board to cover a space formed between the lower heat-insulating boards on both sides; And
And an upper insulating board interposed between the secondary barrier and the primary barrier, the upper insulating board including an upper shield and a lower upper insulating member,
Wherein the lower insulation board further comprises a lower sub-panel interposed between the secondary barrier and the lower insulation member,
A fixing bolt having a vertically fixed stud bolt is provided on a central portion of the lower sub-
Wherein the secondary barrier is connected to another secondary barrier adjacent to the stud bolt.

The method according to claim 1,
Wherein the secondary barrier forms a joint surface welded to the fixed piece at a peripheral portion corresponding to a position where the stud bolt is installed, and the joint surface is joined to the fixed piece by a circular welding method.

3. The method of claim 2,
The joint surfaces formed at both ends of the joint surfaces form a semicircular groove and form a circular shape with the joint surfaces of the other secondary walls adjacent to each other around the stud bolt, and the joint surfaces formed at the corners are chamfered The shape of the cargo hold barrier structure.

The method according to claim 1,
Wherein the secondary barrier has a portion covering a space formed between the lower heat insulating boards in a corrugated shape.

The method according to claim 1,
Wherein the lower insulation board has a predetermined thickness and is formed in a square shape having the same width and the same length.

6. The method of claim 5,
Wherein the secondary barrier has a lateral length equal to a lateral length of the lower insulating board and a vertical length equal to three times the longitudinal length of the lower insulating board.

The method according to claim 1,
Wherein the upper heat insulating board is disposed on both sides of the lower heat insulating board and is arranged at a predetermined interval on the upper part of the secondary barrier in such a manner that the corner portions are coupled to the stud bolts.

8. The method of claim 7,
Wherein the upper insulating board further comprises an upper sub-panel interposed between the upper insulating member and the secondary barrier,
Wherein an inner hole is formed in each corner of the upper insulating board so that a washer and a nut inserted through the inner hole are fastened to the stud bolt protruding toward the inner hole through the upper auxiliary panel, Wherein the washer presses the upper sub-panel.

8. The method of claim 7,
Further comprising a connection board interposed in a space formed between the upper insulation boards, wherein the connection board is disposed on the same plane as the upper insulation board.

10. The method of claim 9,
The upper insulating board and the connecting board are inserted into coupling grooves formed between adjacent upper surfaces of the upper insulating board and the connecting board. One of the opposite ends is fixed and the other presses the upper insulating board or the connecting board. Further comprising an anchor plate for binding the connecting board.