KR20180120366A - A barrier of a cargo and method for installing the same - Google Patents

Abstract

The present invention relates to a barrier of a cargo hold. Specifically, according to one embodiment of the present invention, the barrier of the cargo hold comprises: a heat insulating unit provided on an inner wall of the cargo hold and provided in plural; and a sheer for the barrier provided on an upper portion of the heat insulating unit. At least a part of the plurality of the heat insulating units can be configured to continuously cover the inner wall of the cargo hold having curvature with respect to a nose line with the adjacent heat insulating unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall of a cargo hold,

The present invention relates to a barrier of a cargo hold capable of storing liquefied natural gas and the like, and a method for installing the same.

The liquefied gas is a gas which is cooled or compressed to become a liquid. Since the volume of the liquefied gas is smaller than that in a gaseous state, the liquefied gas is easily stored in a container for storage or transportation. For example, Liquefied Natural Gas (LNG), which is a typical liquefied gas, is a natural gas containing methane as a main component cooled to -163 ° C and liquefied. Only one.

As a method of liquefying the gas, there is a method of liquefying the gas by compressing the gas at room temperature and a method of liquefying the gas while being cooled to a temperature lower than the gasification temperature lower than room temperature. When the latter liquefaction method is used, the gasification temperature of the gas is determined by the pressure inside the vessel. For example, by increasing the pressure inside the vessel, the gasification temperature of the gas can be raised. As the gasification temperature of the gas is increased, the operation of the cooling device necessary to lower the internal temperature of the container can be reduced, which can reduce the cost. Further, when the latter liquefaction method is used, pressure is applied to the inside of the container, so there is an advantage that it is easy to discharge the liquefied gas from the container, and there is no need to construct an additional device for discharging the liquefied gas.

The liquefied gas may be stored in a pressure vessel capable of withstanding a certain level of pressure. The pressure vessel is formed into a cylindrical or spherical shape to effectively withstand the internal pressure, and the pressure vessel is provided with a single structure vessel composed of a single vessel and a heat insulating material wrapping the single vessel, an inner vessel, an outer vessel, There is a rescue container.

Here, the internal temperature of the single vessel or the inner vessel is determined according to the stored liquefied gas, and the single vessel or the inner vessel is made of a material that can withstand the internal temperature as described above. The thickness of a single container or inner container is determined by the material of the container, the design pressure, the size of the container, and the like. The design of these internal vessels is generally governed by the American Society of Mechanical Engineers (ASME), the International Gas Code (IGC) and the High Pressure Gas Safety Management Act.

In addition, the LNG cargo hold installed inside the LNG carrier can be divided into independent tank type and membrane type depending on whether the load of the cargo directly acts on the insulation material . Separate tank-type holds are designed to withstand the high pressures of liquefied natural gas, whereas membrane-type holds are not designed to withstand high pressures. Such a heat insulating material can be configured in the form of a panel.

However, when the wall of the cargo hold is a curved surface, there is a problem that it is difficult to effectively cover the cargo hold with the heat insulating panel, and the bottom wall and the side wall of the cargo hold are arranged staggered to each other to reduce the heat insulation efficiency.

Embodiments of the present invention have been made to solve the above-mentioned problems, and it is an object of the present invention to provide a barrier for a cargo hold which effectively covers a curved wall and a curved wall and has excellent heat insulation efficiency, and a method for installing such a barrier.

According to an aspect of the present invention, there is provided an air conditioner comprising: a heat insulating unit installed on an inner wall of a cargo hold and provided with a plurality of heat insulating units; And a barrier sheet provided on the upper portion of the heat insulating unit, wherein at least a part of the plurality of the heat insulating units is configured to continuously cover the inner wall of the cargo hold having a curvature with respect to the line- , A barrier of the cargo hold may be provided.

Further, the heat insulating unit and the barrier sheet may be provided with a barrier of a cargo hold having a hexagonal shape.

Further, the heat insulating unit may be provided with a barrier of the cargo hold, which has a fixing groove formed in a corner portion of the hexagon.

In addition, it may further comprise a fixing unit for fixing the heat insulating unit to the inner wall of the cargo hold, wherein the fixing unit comprises: a stud installed in the cargo hold; A support member connected to the stud and inserted in the fixing groove to support the heat insulating unit; And a locking member for preventing the supporting portion from separating from the stud.

The supporting portion may include a penetrating portion inserted into the stud; And an extension extending radially about the perforation, wherein the extension is configured to extend in the radial direction from the perforation, to bend toward the bottom, and again extend in the radial direction. .

Further, a cover portion covering the upper portion of the fixed unit may be further provided, and the cover portion may include a heat insulating material and a cap panel.

Further, the barrier sheet may be provided with an embossing portion protruding upward, and the embossing portion may be formed in a shape corresponding to the edge of the barrier sheet.

The barrier sheet may further include an anchoring hole and an embossing portion protruding toward the upper side to surround the hole for anchoring,

The embossing portion may be formed in a shape corresponding to the anchoring hole, and a wall of the cargo hold may be provided.

In addition, an anchoring hole is formed in the central portion of the barrier sheet, a barrier sheet around the hole for the anchoring is fixed to the heat insulating unit, and the barrier sheet has an edge so as to be expanded and contracted A barrier of the cargo hold, which is configured not to be fixed to the heat insulating unit, can be provided.

The heat insulating unit may further comprise: a lower panel; A heat insulating material provided on an upper portion of the lower panel; An upper panel provided on an upper portion of the heat insulating material; And an anchoring plate inserted in the hole formed in the upper panel.

Further, a barriers of the cargo hold may be provided, wherein an anchoring hole having a size smaller than that of the anchoring plate is formed at the center of the barrier sheet, and a barrier sheet around the hole for anchoring is fixed to the upper portion of the anchoring plate .

Further, the heat insulating unit may be provided with a barrier of the cargo hold in which the width of the lower portion is formed wider than the width of the upper portion.

A stud mounting step of installing a stud on an inner wall of the cargo hold; A heat insulating unit disposing step in which a plurality of the heat insulating units are provided so that the vertexes of the heat insulating units face the studs and at least a part of the plurality of heat insulating units are arranged so as to be in line with the adjacent heat insulating units; An insulating unit fixing step of fixing the heat insulating unit to the stud; And installing a barrier sheet on the upper portion of the heat insulating unit; Wherein the heat insulating unit continuously covers the inner wall of the cargo hold having a curvature. .

In addition, the step of fixing the heat insulating unit may include fixing the periphery of the anchoring hole formed in the barrier sheet to the heat insulating unit.

Further, a method of installing a barrier of a cargo hold further includes the step of inserting the cover portion into the fixing groove of the heat insulating unit before fixing the insulating sheet to the cargo hold and before installing the barrier sheet. .

According to the embodiment of the present invention, there is an effect that the barrier effectively covers the curved wall of the hold, and the heat insulating efficiency can be increased.

FIG. 1 is a conceptual view showing a cargo hold having a barrier element according to an embodiment of the present invention.
2 is a conceptual perspective view illustrating a barrier element according to an embodiment of the present invention.
Figure 3 is a bottom perspective view of the barrier element of Figure 2;
Figure 4 is an exploded perspective view of the barrier element of Figure 2;
5 is a cross-sectional perspective view illustrating a barrier element cut along the line A-A 'of FIG. 2;
FIG. 6 is a conceptual perspective view showing that the barrier element of FIG. 5 is thermally expanded. FIG.
7 is a perspective view conceptually showing another example of a barrier sheet.
8 is a plan view conceptually showing a fixing unit for fixing the barrier element of Fig.
Fig. 9 is a perspective view conceptually showing the fixed unit of Fig. 8. Fig.
10 is a perspective view showing the heat insulating unit and the cover portion stuck thereto.
11 is a perspective view showing the cover portion of Fig.
12 is an exploded perspective view conceptually showing a barrier element according to another embodiment of the present invention.

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

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Also, when an element is referred to as being "connected", "supplied", or "delivered" to another element, it may be directly connected, supplied, or delivered to the other element, It should be understood.

It should be noted that the expressions of the upper, lower and side portions in the present specification are described based on the drawings in the drawings and can be expressed differently when the directions of the objects are changed.

1 to 11, a barrier 10 of a cargo hold 1 according to an embodiment of the present invention will be described below. 2 is a conceptual perspective view illustrating a barrier element according to an embodiment of the present invention, and FIG. 3 is a perspective view of a bottom wall of the barrier element of FIG. 2, Figure 4 is an exploded perspective view of the barrier element of Figure 2, Figure 5 is a cross-sectional perspective view showing the barrier element cut along the line A-A 'of Figure 2, Figure 6 is a cross- 7 is a perspective view conceptually showing another example of a barrier sheet, Fig. 8 is a plan view conceptually showing a fixing unit for fixing the barrier element of Fig. 2, and Fig. 9 is a cross- Fig. 10 is a perspective view showing a heat insulating unit and a cover part stuck thereto, and Fig. 11 is a perspective view showing a cover part of Fig.

Referring to FIG. 1, the cargo hold 1 can store a storage such as liquefied natural gas. At one side of the wall of the cargo hold 1, a barrier structure May be provided. For example, a barrier structure may be constructed in which a plurality of barrier elements 10 are disposed adjacent to the inner wall of the cargo hold 1. Hereinafter, the detailed configuration of the barrier element 10 will be described.

2 to 4, the barrier element 10 may include an insulating unit 100, a barrier sheet 200, a fixing unit 300, and a cover unit 400.

The heat insulating unit 100 is installed on one side of the wall of the cargo hold, and the heat insulating unit 100 can be installed on the inner wall of the cargo hold. The heat insulating unit 100 may be provided in plural. The plurality of heat insulating units 100 may be disposed adjacent to each other such that their edges are parallel to each other, and a predetermined gap may be formed between the plurality of heat insulating units 100. In addition, part or all of the heat insulating unit 100 can cover the inner wall of the cargo hold 1 in a line with the adjacent heat insulating unit 100. In other words, the edges of any one of the heat insulating units 100 can be arranged in parallel with the edges of the adjacent other heat insulating units 100. Furthermore, even if the wall of the cargo hold 1 has a curvature, the heat insulating units 100 can be arranged along the wall of the cargo hold 1 having curvature and arranged continuously with each other. The heat insulating unit 100 may have a polygonal shape having at least one of a pentagon and a hexagon.

The heat insulating unit 100 may include a lower panel 110, a heat insulating material 120, an upper panel 130, and an anchoring plate 140. Here, 'lower' means the side opposite to the wall of the cargo hold 1, and 'upper' means the opposite side of the lower side. Therefore, when the heat insulating unit 100 is provided inside the wall of the cargo hold 1, the upper part may refer to the side facing the inner space of the cargo hold 1.

The lower panel 110 may be formed of a plate having at least one shape of a pentagon and a hexagon. A heat insulating material 120 is provided on the upper part of the lower panel 110. The heat insulating material 120 may have a shape corresponding to that of the lower panel 110 and the lower portion of the heat insulating material 120 may be formed to have substantially the same area as the lower panel 110.

The heat insulating material 120 may have a predetermined thickness to suppress heat transfer between the cargo hold 1 and the outside and inside. The upper panel 130 may be provided on the heat insulating material 120.

The upper panel 130 may be formed of a plate having a shape corresponding to the heat insulating material 120. The upper panel 130 may be formed larger than the upper portion of the heat insulating material 120. For example, when the heat insulating material 120 is hexagonal, the upper panel 130 may be formed in a hexagonal shape larger than the heat insulating material 120. Further, the upper panel 130 may be disposed such that its edge overlaps with the edge of another adjacent upper panel 130. An upper panel hole 131 for the anchoring plate 140 may be formed on the upper panel 130. The upper panel hole 131 may be formed at the center of the upper panel 130. The upper panel hole 131 may be formed in a circular shape, but is not limited thereto.

The anchoring plate 140 may be inserted into the upper panel hole 131 and fixed to one or more of the heat insulating material 120 and the upper panel 130. A barrier sheet 200 may be coupled to an upper portion of the anchoring plate 140.

The load supporting part 150 may be provided between the lower panel 110 and the wall of the cargo hold 1. The load supporting part 150 can prevent the wall of the cargo hold 1 from being damaged due to the load of the upper panel 110, the heat insulating material 120 and the lower panel 130. The load supporting portion 150 may have a shape corresponding to that of the lower panel 110 and may be formed smaller than the lower panel 110. And the inside of the edge of the load supporting portion 150 can be surrounded. In other words, when the lower panel 110 is formed in a hexagonal plane, the load supporting part 150 may be formed in a smaller hexagonal plane, and the inside of the load supporting part 150 may be empty. Also, the load supporting portion 150 may be formed of a mastic, foam, plastic, or the like.

In this heat insulating unit 100, a fixing groove 160 may be formed. Further, when the heat insulating unit 100 has a pentagonal or hexagonal shape, the fixing groove 160 may be provided at a part of the vertex thereof. For example, when the adiabatic unit 100 has a hexagonal shape, the fixing groove 160 may be formed at three vertexes of a hexagonal shape, and a vertex where the fixing groove 160 is formed and a fixing groove 160 are formed Non-vertex points may be arranged alternately. Therefore, the fixing grooves 160 can be arranged in a triangular shape on the heat insulating unit 100. [ The fixing groove 160 may have a shape extending inward from the vertex and may be formed on the heat insulating material 120 and the upper panel 130 of the heat insulating unit 100.

Since the barrier sheet 200 is formed on the upper part of the heat insulating unit 100 having the above-described structure, the barrier sheet 200 will be described with reference to FIGS. 5 to 7. FIG.

5 to 7, the barrier sheet 200 may be a plate-like member installed on the upper panel 130 of the heat insulating unit 100. Since a plurality of the heat insulating units 100 are provided, a plurality of barrier sheets 200 may be provided. The plurality of barrier sheets 200 may be provided so as to overlap each other at an edge thereof, and may cover a gap between the plurality of heat insulating units 100.

An anchoring hole 210 may be formed in the barrier sheet 200 at a portion corresponding to the anchoring plate 140. The anchoring holes 210 may be located at the center of the barrier sheet 200. The anchoring hole 210 may be formed to be smaller than the anchoring plate 140 and the anchoring hole 210 is fixed to the anchoring plate 140 along the edge thereof so that the barrier sheet 200 is adhered to the adiabatic unit 200). ≪ / RTI > For example, the inside of the anchoring hole 210 and the top of the anchoring plate 140 may be welded.

The barrier sheet 200 may be provided with an embossing portion 220 to prevent the overall shape of the barrier sheet 200 from being deformed during thermal expansion caused by a temperature change. The embossing portion 220 may be formed so that a part of the barrier sheet 200 protrudes toward the upper portion, and may be formed of a plurality of embossing portions 220. The embossing portion 220 may be formed in a shape corresponding to at least one of the edge of the barrier sheet 200 and the anchoring hole 210. For example, when the barrier sheet 200 is formed in a hexagonal shape, the embossed portion 220 may be formed in a hexagonal shape, and the plurality of hexagonal embossed portions 220 may be arranged to have the same center. Also, when the anchoring hole 210 is formed in a circular shape, the embossing portion 220 may be formed in a circular shape, and the plurality of circular embossing portions 220 may be arranged to have the same center.

Since the barrier sheet 200 is fixed to the heat insulating unit 100 through the anchoring hole 210, the barrier sheet 200 is free from contraction and expansion due to temperature changes around the anchoring hole 210 It is possible. In order to facilitate such contraction and expansion, the edge of the barrier sheet 200 may be formed as a free end without being fixed to the heat insulating unit 100. In addition, since the barrier sheet 200 is provided with the embossed portion 220, the overall shape of the barrier sheet 200 can be prevented from being deformed at the time of contraction and expansion. For example, when the barrier sheet 200 has a hexagonal shape, the barrier sheet 200 can be contracted and expanded while maintaining the hexagonal shape due to the embossed portion 220.

Since this barrier element 10 can be fixed to the cargo hold 1 through the fixing unit 300, the fixing unit 300 will be described below with reference to Figs. 8 and 9. Fig.

8 and 9, the fixing unit 300 can be fixed to the wall of the cargo hold 1 with the insulating unit 100 of the barrier element 10. The fixing unit 300 may include a stud 310, a support 320, an elastic member 330, an interposition member 340, and a locking member 350. The stud 310 may be fixedly mounted on the wall of the cargo hold 1. The supporting portion 320 may be connected to the stud 310 and inserted into the fixing groove 160. For example, the support portion 320 may include a penetration portion 321 having a hole to be inserted into the stud 310; And one or more extensions 322 that extend radially about the perforations 321. Here, the extending portion 322 may be formed to extend from the penetrating portion 321, bend toward the lower portion, and then bend in the radial direction. The supporting portion 320 may be inserted into the fixing groove 160 formed in the heat insulating material 120 of the heat insulating unit 100 and the upper panel 130 to press the lower panel 110 downward. On the other hand, when the heat insulating unit 100 is formed in a hexagonal shape, the extending portions 322 may be composed of three pieces. The elastic member 330 applies an elastic force to the support portion 320 so that the support portion 320 can more firmly fix the heat insulating unit 100. [ The elastic member 330 may be a disk spring, but is not limited thereto. The interposing member 340 may be inserted into the stud 310 so as to be positioned between the elastic member 330 and the locking member 350. Such an interposition member 340 helps the elastic member 330 to be supported more stably. The interposer member 340 may be a washer, but is not limited thereto. The locking member 350 is inserted into the stud 310 to prevent the supporting portion 320, the elastic member 330 and the interposition member 340 from separating from the stud 310. The locking member 350 may be a nut.

Such a fixing unit 300 can be covered by the cover part 400. Fig. Hereinafter, the cover portion 400 will be described with reference to FIGS. 10 and 11. FIG.

 10 and 11, the cover part 400 may be inserted into the fixing groove 160 to fill the space of the fixing groove 160 in the upper part of the fixing unit 300. [ The cover part 400 may include a heat insulating material 410 and a cap panel 420. The heat insulating material 410 of the crotch part 400 may be made of the same material as the heat insulating material 120 of the heat insulating unit 100 And the cap panel 420 may be formed of the same material as the upper panel 130 of the heat insulating unit 100 and arranged in parallel. The cover portion 400 may be configured to extend in three directions. Heat transfer and convection in the fixing groove 160 can be prevented by the cover part 400, and the heat insulating efficiency can be increased.

Hereinafter, an example of a construction method of the barrier structure will be described. The stud 310 is installed on the inner surface of the cargo hold 1 and the adiabatic unit 100 is placed so that the vertex of the adiabatic unit 100 is positioned on the stud 310 (The heat insulating unit disposing step S200). In the heat insulating unit disposing step (S200), an operation for temporarily fixing the heat insulating unit (100) to the wall of the cargo hold (1) may be carried out if necessary. Thereafter, the supporting portion 320 of the fixing unit 300 is fastened to the stud 310 to insert the extended portion 322 into the fixing groove 160 of the heat insulating unit 100. After the support 320 is inserted, the elastic member 330, the interposing member 340, and the locking member 350 are sequentially fastened to the stud 310. Through this fastening process, the heat insulating unit 100 can be fixed to the stud 310 (heat insulating unit fixing step S300). When the fixing of the heat insulating unit 100 is completed, the cover part 400 may be inserted into the fixing groove 160 to fill the fixing groove 160 on the fixing unit 300 (step S400) . Thereafter, the barrier sheet 200 is installed on the upper portion of the heat insulating unit 100 (step S500 of installing the barrier sheet). The barrier sheet 200 can be fixed to the heat insulating unit 100 by welding the edge of the intercoking hole 210 to the aquering plate 140 of the heat insulating unit 100. [

The barrier structure having such a barrier element 10 can cover the curved wall of the cargo hold 1 more effectively, and can have a two-dimensional curvature like a cylinder or a three-dimensional curvature like a spherical surface Can effectively cover the wall of the cargo hold (1). Accordingly, the barrier elements 10 can be arranged continuously along the wall surface of the cargo hold 1 without being staggered or warped to each other.

Although the upper and lower widths of the adiabatic unit 100 are shown as being the same in the drawings according to the above embodiments, other embodiments of the present invention can be configured in different ways.

Hereinafter, another embodiment of the present invention will be described with reference to Fig. 12 is an exploded perspective view conceptually showing a barrier element according to another embodiment of the present invention. In describing another embodiment of the present invention, differences from the above-described embodiment will be mainly described, and the same description and reference numerals will be used for the embodiments described above.

Referring to FIG. 12, the barrier element 10 may be configured to have a narrower width from the bottom to the top. In other words, the width d1 of the lower part of the barrier element 10 can be made larger than the width d2 of the upper part of the barrier element. Further, as seen from the side, the barrier element 10 may have a trapezoidal shape, and the side surface of the barrier element 10 may have a gradient. In addition, the lower panel 110 may have a larger area than the upper panel 130. Through this arrangement, the barrier element 10 can more effectively cover the surface of the cargo hold 1 having a very large curvature, while narrowing the gap formed between the barrier elements 10.

While the present invention has been described with reference to specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments and that various changes and modifications may be made without departing from the spirit and scope of the general inventive concept as defined by the appended claims. Should be interpreted. Skilled artisans may implement a pattern of features that are not described in a combinatorial and / or permutational manner with the disclosed embodiments, but this is not to depart from the scope of the present invention. It will be apparent to those skilled in the art that various changes and modifications may be readily made without departing from the spirit and scope of the invention as defined by the appended claims.

1: Cargo hold 10: Barrier element
100: adiabatic unit 110: lower panel
120: Insulation material 130: Top panel
131: upper panel groove 140: anchoring plate
150: load supporting portion 160: fixing groove
200: Barrier sheet 210: Anchoring hole
220: embossing unit 300: fixed unit
310: stud 320:
321: penetrating part 322: extension part
330: elastic member 340: interposing member
350: locking member 400: cover part
410: Insulation material 420: Cap panel

Claims (15)

A heat insulating unit provided on an inner wall of the cargo hold and provided in plural; And
And a barrier sheet provided on an upper portion of the heat insulating unit,
At least a part of the plurality of the heat insulating units is in line with the adjacent heat insulating units,
And a wall of the cargo hold that continuously covers the inner wall of the cargo hold having a curvature. The method according to claim 1,
Wherein the heat insulating unit and the barrier sheet have a hexagonal shape. 3. The method of claim 2,
The heat insulating unit
And a fixing groove formed at a vertex portion of the hexagon. The method of claim 3,
And a fixing unit for fixing the heat insulating unit to the inner wall of the cargo hold,
The fixed unit includes:
A stud installed in the cargo hold;
A support member connected to the stud and inserted in the fixing groove to support the heat insulating unit; And
Wherein said support portion includes a locking member to prevent said support from departing from said stud. 5. The method of claim 4,
The support portion
A penetrating portion inserted into the stud; And
And an extension extending radially about the perforation,
Wherein the extension is configured to extend from the penetration in the radial direction and to bend toward the bottom and extend in the radial direction again. 5. The method of claim 4,
Further comprising a cover portion covering an upper portion of the fixed unit,
Wherein the cover portion comprises a thermal insulation and a cap panel. The method according to claim 1,
Wherein the barrier sheet is provided with an embossing portion protruding upward,
Wherein the embossed portion is formed in a shape corresponding to an edge of the barrier sheet. The method according to claim 1,
Wherein the barrier sheet has an anchoring hole and an embossing portion protruding upward toward the upper portion of the hole for anchoring,
Wherein the embossing portion is formed in a shape corresponding to the anchoring hole. The method according to claim 1,
An anchoring hole is formed in the center portion of the barrier sheet,
Wherein the barrier sheet around the hole for anchoring is fixed to the heat insulating unit,
Wherein the barrier sheet is configured such that the edge is not fixed to the heat insulating unit so as to expand and contract as the temperature changes. 10. The heat exchanger according to claim 9,
Lower panel;
A heat insulating material provided on an upper portion of the lower panel;
An upper panel provided on an upper portion of the heat insulating material; And
And an anchoring plate inserted in a hole formed in the upper panel, 11. The method of claim 10,
An anchoring hole having a size smaller than that of the anchoring plate is formed at the center of the barrier sheet,
Wherein the barrier sheet around the hole for anchoring is secured to the top of the anchoring plate. The method according to claim 1,
The heat insulating unit
Wherein the width of the lower portion is greater than the width of the upper portion. A stud mounting step of installing a stud on an inner wall of the cargo hold;
A heat insulating unit disposing step in which a plurality of the heat insulating units are provided so that the vertexes of the heat insulating units face the studs and at least a part of the plurality of heat insulating units are arranged so as to be in line with the adjacent heat insulating units;
An insulating unit fixing step of fixing the heat insulating unit to the stud; And
Installing a barrier sheet on an upper portion of the heat insulating unit;
Lt; / RTI >
Wherein the heat insulating unit continuously covers the inner wall of the cargo hold having a curvature. 14. The method of claim 13,
The step of fixing the adiabatic unit
And fixing the periphery of the anchoring hole formed in the barrier sheet to the heat insulating unit. 14. The method of claim 13,
Further comprising a cover part mounting step of inserting the cover part into the fixing groove of the heat insulating unit before fixing the heat insulating unit to the cargo window and before installing the barrier sheet.

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