KR20160021351A - Cargo for liquefied gas - Google Patents

Abstract

Disclosed are a liquefied gas tank including a barrier having corrugation parts, and a manufacturing method thereof. The liquefied gas tank according to an embodiment of the present invention, which is installed in an outer wall including corner parts and a flat plate part, comprises: lower insulation panels for a corner part which are installed to be adjacent to the corner parts; lower insulation panels for a flat plate part which are installed to be adjacent to the flat plate part in first and second directions; auxiliary barriers for a corner part which are stacked on the lower insulation panels for a corner part to seal the lower insulation panels for a corner part; and auxiliary barriers for a flat plate part which are stacked on the lower insulation panels for a flat plate part to seal the lower insulation panels for a flat plate part, wherein one or more from the corrugation parts of the auxiliary barriers for a corner part are arranged to not meet the corrugation parts of the auxiliary barrier for a flat plate part, and wherein the ends of the corrugation parts of the auxiliary barriers for a corner part arranged to not meet the corrugation parts of the auxiliary barrier for a flat plate part are connected to the plane parts of the adjacent auxiliary barriers for a flat plate part to maintain a sealed state.

Description

{CARGO FOR LIQUEFIED GAS}

The present invention relates to a liquefied gas hold, and more particularly to a liquefied gas hold including a barrier provided with a wrinkle.

The liquefied gas is a gas which is cooled or compressed to be made into a liquid. For convenience of transportation, the gas which is gas at room temperature is used as a liquid. One of the important uses in liquefied gas is liquefied natural gas. Liquefied natural gas (LNG) refers to a colorless transparent cryogenic liquid with a methane-based natural gas cooled to -162 ° C, reducing its volume by one-sixth.

As such liquefied natural gas is used as an energy source, an efficient transportation method that can transport the gas from the production base to the purchase site of the customer site has been examined in order to use this gas as energy. As a result of this effort, a large amount of liquefied gas A liquefied gas transport vessel capable of transporting liquefied natural gas to the sea was developed.

However, the liquefied gas transportation vessel is required to have a cargo that can store and store the liquefied gas liquefied at an extremely low temperature.

That is, since the liquefied natural gas has a higher vapor pressure than the atmospheric pressure and has a boiling temperature of about -162 ° C, in order to safely store and store such liquefied natural gas, For example, it should be made of aluminum steel, stainless steel, 35% nickel steel, etc. It should be designed with a unique insulation panel structure which is resistant to thermal stress and heat shrinkage and prevents heat penetration. Such a liquefied gas holding window can be divided into a self-supporting type and a membrane type according to its structure.

If the liquefied gas leaks to the inside of the heat insulating panel, it may cause damage to the cargo window due to rapid volume expansion due to temperature increase. Thus having a membrane barrier to seal the liquefied gas inside the cargo hold.

In the liquefied gas holding window, a plurality of barrier sheets are combined to form a membrane barrier. The barrier walls are thermally shrunk due to cryogenic liquefied gas, and when the thermal shrinkage occurs, the welded portion may be damaged by thermal stress.

Because of this problem, the barrier has a corrugation to have low in-plane stiffness. The reinforced corrugated part is deformed by a certain amount when heat shrinkage occurs, thereby reducing the thermal stress at the welded part.

Japanese Patent Application Laid-Open No. 10-2013-0092238 discloses a heat insulation structure of a liquefied natural gas storage window.

Published Japanese Patent Application No. 10-2013-0092238 (published on Aug. 20,

An embodiment of the present invention is to provide a liquefied gas holding window that can be installed easily, can shorten a manufacturing time and can maintain airtightness, and a method of manufacturing the same. And to provide a liquefied gas holding window capable of improving resistance to thermal stress at a cryogenic temperature.

According to an aspect of the present invention, there is provided a liquefied gas holding window installed on an outer wall including a corner portion and a flat plate portion, the cornered portion lower insulating panel being installed adjacent to the corner portion along a corner; A lower flat panel lower insulation panel installed adjacent to the flat plate in a first direction and a second direction, respectively; A corner sub-barrier laminated on the corner portion lower heat-insulating panel to seal the corner lower heat-insulating panel; And a flat plate auxiliary barrier laminated on the flat plate part lower insulation panel to seal the flat plate part lower insulation panel, wherein at least one of the corrugation parts of the corner supplementary barrier has a wrinkle part And the end portion of the corrugated portion of the corner portion auxiliary barrier arranged to be shifted may be connected to the flat portion of the adjoining flat portion auxiliary barrier to maintain the sealed state.

Wherein at least one of the corrugations of the flat plate sub-barrier is disposed so as to be offset from the corrugation of the corner sub-barrier, and the end of the corrugated portion of the flat plate sub- A liquefied gas holding window connected to the flat portion and maintained in a sealed state can be provided.

The edge of the corrugated portion of the corrugated portion of the corner portion auxiliary barrier disposed so as to be offset from the corrugated portion of the flat plate secondary barrier may be provided with a liquefied gas holding window that is closed by the first end cap to maintain the sealed state.

The first end cap may be provided with a liquefied gas holding window, one side of which is fixed on the end of the corrugation of the corner auxiliary barrier, and the other side is fixed on the flat plate auxiliary barrier.

The end of the corrugated portion of the corrugated portion of the flat plate portion auxiliary barrier disposed to be offset from the corrugated portion of the corner portion secondary barrier may be provided with a liquefied gas holding window that is closed by the second end cap to maintain the sealed state.

The second end cap may be provided with a liquefied gas holding window, one side of which is fixed on the end portion of the corrugation of the flat plate auxiliary barrier and the other side is fixed on the corner portion auxiliary barrier.

A liquefied gas holding window may be provided in which the corrugation of the corner portion auxiliary barrier and the corrugation of the flat plate auxiliary barrier are recessed downward.

The corrugated portion of the corner portion auxiliary barrier is received at the boundary between the adjacent corner lower insulation panels and the corrugation of the flat plate auxiliary barrier is received at the boundary between the adjacent flat plate lower insulation panels .

A liquefied gas storage window may be provided in which the boundary between the corner lower insulation panels and the boundary between the flat plate lower insulation panels are offset from each other.

One side of the flat plate auxiliary barrier laminated on the lower flat plate portion adjacent to the lower portion of the corner portion may be provided with a liquefied gas holding window provided on the adjacent lower portion of the corner portion lower insulating panel have.

Wherein the corrugation of the corner auxiliary wall and the corrugation of the flat wall auxiliary wall are provided so as to extend downwardly so that the corrugation of the corner auxiliary wall is received at the boundary between the adjacent corner lower insulation panels, And the corrugation of the barrier may be provided in a liquefied gas cargo hold accommodated in the boundary between the adjacent flat plate lower insulation panels.

The boundary between the corner lower insulation panels and the boundary between the lower flat panel and the lower insulation panel are offset from each other, and a corrugation receiving groove for receiving the corrugation of the flat plate sub- A liquefied gas holding window may be provided.

Wherein one side of the flat plate auxiliary barrier is provided so as to cover the corner of the corner auxiliary barrier and one end of the corrugation of the flat plate auxiliary barrier is closed inside the flat plate auxiliary barrier edge so as not to interfere with the corner auxiliary barrier. May be provided.

According to another aspect of the present invention, there is provided a method of manufacturing a corner panel, comprising the steps of: providing corner panels with lower-side adiabatic panels adjacent to corners along corners; Wherein the corner auxiliary wall is provided on the lower auxiliary adiabatic panel and the flat auxiliary auxiliary wall is provided on the flat lower part adiabatic panel, And the corrugations of the flat plate portion auxiliary barrier are arranged so as to be offset from the corrugation portions of the flat plate portion auxiliary barrier.

And a closed state of the barrier is maintained by closing the open end of the shifted wrinkle portion.

The corner portion lower insulation panel and the flat plate lower insulation panel may be arranged such that the boundary of the corner lower insulation panel and the boundary of the lower insulation panel of the flat plate are shifted from each other, have.

The corner portion auxiliary barrier may be formed by providing a corner main auxiliary barrier on the lower heat insulation panel of the corner portion and connecting both ends of the corner portion connection auxiliary barrier to the adjacent corner main auxiliary barrier, Wherein the flat plate auxiliary barrier is formed by providing a flat plate auxiliary barrier on the flat plate lower insulation panel adjacent to the corner lower insulation panel, A method of manufacturing a liquefied gas holding window to cover the corner connecting subsidiary barrier may be provided.

A first end cap is provided to seal the opening formed at the corrugation end of the corner portion connection auxiliary barrier after the flat portion auxiliary barrier is provided and the opening formed in the corrugated end of the flat portion secondary barrier is sealed A method of manufacturing a liquefied gas holding window in which the second end cap is installed can be provided.

The liquefied gas holding window according to the embodiment of the present invention does not require a marking operation to make the corrugated portion of the flat plate portion coincide with the corrugated portion of the corner portion, and thus the barrier wall can be easily installed and the manufacturing time can be shortened.

1 is a perspective view of a partially assembled liquefied gas holding window according to an embodiment of the present invention.
2 is a cross-sectional view showing the structure of a liquefied gas holding window according to an embodiment of the present invention.
3 is an exploded perspective view showing an assembled state of the auxiliary barrier.
4 is an enlarged view of Fig.
5 is a cross-sectional view showing an assembled state of the upper insulating panel.
Fig. 6 is a perspective view showing a state of engagement of the kitchen wall. Fig.
Fig. 7 is an exploded perspective view showing a state in which the auxiliary barrier of the corner portion is engaged. Fig.
FIGS. 8 to 11 illustrate an installation of the corner portion auxiliary barrier according to the embodiment of the present invention,
FIG. 8 shows a state in which a corner auxiliary wall is provided, FIG. 9 shows a state in which a connection auxiliary wall is installed, FIG. 10 shows a state in which a flat auxiliary wall is provided, and FIG. .
12 is an exploded perspective view showing a state in which the wrinkle-portion cap is installed.

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 and 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.

The liquefied gas holding window according to an embodiment of the present invention can be used to store and / or transport cryogenic liquefied gas. The liquefied gas is made of liquid by cooling or compressing the gas, and includes liquefied natural gas (LNG), liquefied petroleum gas (LPG), dimethyl ether (DME) and the like .

Liquefied gas cargo holds are used to transport liquid gas such as LNG carrier, LNG RV (Regasification Vessel) carrier, LPG carrier or ethylene carrier, FSRU (Floating Storage Regulation Unit), FPSO (Floating Production Storage Offloading) Or Barge Mounted Power Plant (BMPP), or to marine floating plants with vaporization facilities. In addition, the liquefied gas cargo holds include not only the facilities installed on the sea, but also those used for facilities to store or produce liquefied gas installed on land.

Hereinafter, a membrane-type cargo hold of a liquefied gas holding cargo will be described as an example. FIG. 1 is a partially assembled perspective view illustrating a structure of a liquefied gas holding window according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating a structure of a liquefied gas holding window according to an embodiment of the present invention.

Referring to the drawings, the liquefied gas holding window surrounds a space capable of accommodating the liquefied gas, and includes a main wall 50 in direct contact with the liquefied gas, a heat insulating panel 50 surrounding the main wall 50, Assembly, and an outer wall 10 that surrounds and firmly supports the insulating panel assembly.

The kitchen wall 50 is for sealing the storage space in which the storage fluid is received, and requires airtightness (or watertightness). Liquefied gas is usually stored in a liquid state because it can be kept at a cryogenic temperature below the boiling point. However, depending on the change of temperature or pressure, vaporization of some liquefied gas may occur. In this case, the pressure inside the cargo hold increases greatly. When the kitchen wall 50 penetrates due to such an increase in pressure or the like, the liquid or gaseous liquefied gas can be introduced into the insulating panel assembly. As the temperature of the introduced liquefied gas increases, the volume rapidly expands and damages the heat insulating panel assembly. The damage to the cargo holds a significant amount of time and money in repairs, so the airtightness of the barrier is considered very important.

Metal material such as an invar alloy (INVAR), stainless steel (SUS), or an aluminum alloy can be used to maintain the physical and chemical conditions of the kitchen wall 50 even at a low temperature. The kitchen wall 50 may be formed by connecting a plurality of kitchen wall 50 sheets and may be welded to each other to maintain airtightness.

As a method of welding the kitchen wall 50, various welding methods used in the related art can be used and include lap welding or butt welding. An automatic welding apparatus using laser welding or plasma welding may also be used to improve uniformity of work quality while improving welding quality. Above-mentioned lap welding, butt welding, laser welding, plasma welding, etc. are well known in the related art, so a detailed description will be omitted.

Because the kitchen wall 50 is in direct contact with the cryogenic storage fluid, it is exposed to rapid contraction and expansion. The kitchen wall 50 may be damaged due to accumulation of fatigue due to repeated heat shrinkage and thermal expansion, or breakage of the welded portion when heat shrinkage occurs. Because of this problem, the kitchen wall 50 includes a corrugation 51 to have an in-plane stiffness. The corrugated portion 51 is elastically deformed in shape corresponding to the thermal stress, thereby reducing the thermal stress at the welded portion.

The kitchen wall 50 includes first and second wrinkles 51-1 and 51-2 arranged in different directions and an intersection 52 at which the two wrinkles 51 intersect . The thermal stress acting in the in-plane direction of the kitchen wall 50 can be solved by the two-directional wrinkles 51. That is, the thermal stress acting in the longitudinal direction of the first wrinkled portion 51-1 is canceled by the elasticity of the second wrinkled portion 51-2, and the thermal stress acting in the longitudinal direction of the second wrinkled portion 51-2 Can be solved by the stretchability of the first wrinkled portion 51-1.

Although the two-directional wrinkles 51 are vertically arranged in the figure, they may include three or more wrinkles as required. For example, the three corrugations may be arranged at an angle of 60 degrees with respect to each other.

The outer wall includes a flat plate portion and a corner portion. The heat insulating panel assembly includes an insulating panel assembly installed on a flat plate portion and an insulating panel assembly installed on a corner portion. The corner portion connects the flat plate portions disposed at different angles and includes a corner portion to which two different heat insulating panels are connected and a vertex portion to which three different heat insulating panels are connected. Hereinafter, the heat insulating panel assembly provided on the flat plate will be described as a basis.

The heat insulating panels 20 and 30 can be generally made of a material having excellent heat insulation performance and light weight such as polyurethane foam (PUF) or reinforced polyurethane foam (R-PUF, Reinforced PUF) It can be kept at an ultra-low temperature state by being insulated from the outside. The heat insulating panel assembly generally has a double insulation structure including the upper heat insulating panel 30 and the lower heat insulating panel 20 for the purpose of improving the heat insulating performance and facilitating the repair.

An inner hull can be used for the outer wall 10 and supports the load of the storage fluid. The lower insulation panel 20 may be fixed to the outer wall 10.

The lower first reinforcing panel 21 can be coupled to the bottom surface so as to be firmly fixed to the outer wall 10. The lower first reinforcing panel 21 can be coupled to the outer wall 10 by various fixing members including the stud bolts 12, 10). ≪ / RTI > The lower first reinforcing panel 21 may be made of plywood or the like and may be attached to the bottom surface of the lower insulating panel 20 using an adhesive such as an epoxy glue or the like.

The insulating panel assembly may include an auxiliary barrier 40 interposed between the upper insulating panel 30 and the lower insulating panel 20. The auxiliary barrier 40 protects the lower insulation panel 20 when the kitchen wall 50 is infiltrated, thereby greatly reducing the time and cost required for the repair.

The auxiliary barrier 40 may be formed of a metal material such as an INVAR, stainless steel or aluminum alloy as in the case of the kitchen wall 50 or a rigid triplex and a support triple triplex) can be used.

The adhesive type manufacturing method and the welding type manufacturing method are used in accordance with the difference in the method of joining the auxiliary barrier 40 to the lower heat insulating panel 20. [ Although not shown in the drawing, in the adhesive type manufacturing method, a rigid triplex is attached by using an adhesive such as epoxy glue on the lower insulating panel 20, and the adjacent rigid triplex is connected with a support triplex, State can be completed. At this time, the shuffle triplex may also be attached to the rigid triplex by an adhesive.

A liquefied gas holding window according to an embodiment of the present invention is a welded manufacturing method in which adjacent auxiliary walls 40 are welded together. The welding method is such that the auxiliary barrier 40 is mechanically coupled instead of bonding to the lower insulating panel 20 and the upper insulating panel 30 is also bonded to the lower insulating panel 20 20).

Hereinafter, a liquefied gas holding window and a method of manufacturing the same according to an embodiment of the present invention will be described. In the following description, reference is made to Figs. 1 to 6. First, the installation process of the lower insulating panel 20 will be described with reference to FIGS. 1 and 2. FIG.

The lower heat insulating panel 20 may be coupled to the outer wall 10 through a lower first reinforcing panel 21 adhered to the bottom surface. The outer wall 10 may be welded with a stud bolt 12 for joining the lower insulating panel 20. Through holes 20a and 21a are formed in the lower heat insulating panel 20 and the lower first reinforcing panel 21 so that the stud bolts 12 can pass therethrough. The diameter of the through hole 21a formed in the lower first reinforcing panel 21 may be smaller than the diameter of the through hole 20a formed in the lower heat insulating panel 20. [

The stud bolt 12 is inserted into the through hole 20a formed in the corner of the lower heat insulating panel 20 and is engaged with the nut and the nut is engaged with the stud bolt 12 to thereby connect the lower first reinforcing panel 21 Restraint. As a result, the lower heat insulating panel 20 to which the lower first reinforcing panel 21 is attached is joined to the outer wall 10. At this time, the foam plug 20b may be inserted into the through hole 20a to maintain the heat insulating performance.

A mastic 11 having an adhesive force and / or a level pad 13 for adjusting a level difference may be interposed between the lower first reinforcing panel 21 and the outer wall 10. In particular, since the mastic 11 has both adhesive force and elasticity, it is possible to combine the outer wall 10 and the lower heat insulating panel 20 and alleviate the impact transmitted to each other.

The plurality of lower insulating panels 20 may be disposed adjacent to each other, and may be arranged in a lattice pattern, for example. The arrangement in the form of a lattice means that the lower insulating panels 20 are disposed not only adjacent to each other in the first direction but also adjacent to each other in the second direction.

And the lower joint 23 can be inserted between the adjacent lower heat insulating panels 20. The lower joint 23 may be a thermal insulator capable of filling a gap between the lower insulating panels 20, and a glass wool or the like may be used. The lower joint 23 may be inserted after the lower insulating panel 20 is installed or attached to the side of the lower insulating panel 20.

Next, the process of installing the auxiliary barrier 40 on the lower insulating panel 20 will be described with reference to FIGS. 3 and 4. FIG. Fig. 3 is an exploded perspective view showing a state of engagement of the auxiliary barrier, and Fig. 4 is an enlarged view of Fig.

A lower second reinforcing panel 22 may be laminated on the upper part of the lower insulating panel 20 for installing the auxiliary barrier 40. The lower second reinforcing panel 22 may be made of plywood or the like and may be attached to the lower insulating panel 20 using an adhesive such as an epoxy glue or the like.

An auxiliary barrier connecting member 24 may be provided on the upper part of the lower insulating panel 20. Particularly, when the lower second reinforcing panel 22 is provided, the auxiliary barrier connecting member 24 can be coupled to the upper surface of the lower second reinforcing panel 22. [ The auxiliary barrier connecting member 24 may be made of a metal such as SUS and welded to the auxiliary barrier 40 and may be mechanically coupled to the lower second reinforcing panel 22 by a rivet 24a or the like. The auxiliary barrier connecting member 24 may be received in the groove 22a formed in the lower second reinforcing panel 22 and may not protrude from the upper surface of the lower second reinforcing panel 22. [

In addition, the auxiliary barrier connecting members 24 may be provided in a strip shape and may be arranged in different directions to form intersections. For example, two strips orthogonal to each other. The auxiliary barrier connecting member 24 may be provided parallel to the edge of the opposing lower insulating panel 20. In addition, the auxiliary barrier connecting member 24 may be provided in one strip or may be provided such that a plurality of strips are continuously connected.

A panel fixing unit 25 for fixing the upper insulating panel 30 may be provided on the lower insulating panel 20. In particular, when the lower second reinforcing panel 22 is provided, the panel fixing unit 25 can be coupled to the upper surface of the lower second reinforcing panel 22. [ The panel fixing unit 25 includes an engaging portion 25a mechanically coupled to the lower second reinforcing panel 22 by means of a rivet 25c or the like, And may include projecting members 25b that engage with each other. The panel fixing unit 25 may be received in the groove 22b formed in the lower second reinforcing panel 22 and may not protrude from the upper surface of the lower second reinforcing panel 22. [

The lower insulating panel 20 may have a square shape when viewed from above, and it is preferable that the lower insulating panel 20 is of a weight and size sufficient for the operator to work manually. If the lower insulating panel 20 is large and heavy, it must be operated using mechanical equipment, which increases the cost and time required in the manufacturing process. In the case of the lower heat insulating panel 20, since the mastic 11 is normally attached to the bottom surface of the lower insulating panel 20, the efficiency may be lowered when using mechanical equipment.

For example, the bottom insulating panel 20 according to the embodiment of the present invention may use a reinforced polyurethane foam (R-PUF) having a size of about 1000 mm * 1000 mm, but the weight may be around 20 kg. Therefore, two workers can work manually by using a vacuum gripper or the like.

The auxiliary barrier connecting member 24 is connected (including by being connected by a virtual extension line without being directly connected) with the adjacent auxiliary barrier connecting member 24 to form one closed figure. It is shown in the figure that eight lower insulating panels 20 are disposed adjacent to each other and a rectangular closed shape is formed by an auxiliary barrier connecting member 24 provided on the lower insulating panel 20. [

One auxiliary barrier 40 sheet constituting the auxiliary barrier 40 may have a shape corresponding to the shape of the closed figure formed by the auxiliary barrier connecting member 24. [ The corners of the sheets of the secondary barrier 40 may be arranged and fixed so as to overlap the secondary barrier connecting members 24, respectively. In one example, the sheet of secondary barrier 40 may be secured to the secondary barrier connecting member 24 in a tack welding manner.

At this time, a through hole (40a) through which the projecting member (25b) of the panel fixing unit (25) can penetrate is formed in the seat of the auxiliary barrier (40). After the completion of the installation of the auxiliary barrier 40, the through hole 40a and the panel fixing unit 25 are welded to each other to secure the airtightness of the auxiliary barrier 40. [

After one auxiliary barrier 40 sheet is fixed, another auxiliary barrier 40 sheet may be fixed to the adjacent one side. At this time, at least one corner of the edge of the auxiliary barrier 40 sheet adjacent to the auxiliary barrier 40 sheet is arranged to overlap with the sheet of the auxiliary barrier 40 previously provided, and the other edge is disposed on the auxiliary barrier connection member 24 As shown in FIG. For example, the fixing of the auxiliary barrier 40 sheet and the auxiliary barrier 40 sheet and the securing of the auxiliary barrier 40 sheet and the auxiliary barrier connection member 24 can be performed using a tack welding method.

The above installation process is continuously performed to fix all the sheets of the auxiliary barrier 40 on the lower insulating panel 20. [ However, since it is still in a state of being in a state of being in contact with the gap between the adjoining auxiliary barrier 40 sheets, it is necessary to perform the main welding in order to maintain airtightness.

Both edges of the sheets of the auxiliary barrier wall 40 adjacent to each other are welded by lap welding or butt welding, thereby ensuring airtightness. As the welding method which can be used at this time, various welding methods used in the related art can be used. An automatic welding apparatus using laser welding or plasma welding may also be used to improve uniformity of work quality while improving welding quality. Above-mentioned lap welding, butt welding, laser welding, plasma welding, etc. are well known in the related art, so a detailed description will be omitted.

On the other hand, the auxiliary barrier connecting member 24 can be prevented from being deformed by the welding heat due to the welding heat (or welding seam) when the adjacent auxiliary barrier walls 40 are welded to each other . It is possible to prevent deformation of the auxiliary barrier 40 sheet, which may be caused by high temperature, particularly when plasma welding is used. At this time, in the process of overlap welding or butt welding of the sheets of the auxiliary barrier 40, the welding heat is transmitted to the auxiliary barrier connecting member 24, and the auxiliary barrier connecting member 24 and the auxiliary barrier 40, The sheets may be welded together.

Since the upper barrier panel 40 is located between the upper insulating panel 30 and the storage fluid, a certain amount of thermal deformation can not be avoided even if the thermal barrier is not greatly generated as the main wall 50. In the case of the adhesive type manufacturing method in which the auxiliary barrier and the lower insulating panel are bonded by bonding, stress is applied to the bonding surface with the lower insulating panel due to shrinkage and expansion of the auxiliary barrier.

The secondary barrier 40 may include a corrugation 41 to have an in-plane stiffness. The corrugated portion 41 is elastically deformed in shape corresponding to the thermal stress, thereby reducing the thermal stress at the welded portion.

The auxiliary barrier 40 includes first and second wrinkled portions 41-1 and 41-2 arranged in different directions and an intersection portion 42 where the two wrinkled portions 41 intersect with each other . The thermal stress acting in the in-plane direction of the auxiliary barrier 40 can be relieved by the two-directional folds 41. [ That is, the thermal stress acting in the longitudinal direction of the first wrinkled portion 41-1 is canceled by the elasticity of the second wrinkled portion 41-2, and the thermal stress acting in the longitudinal direction of the second wrinkled portion 41-2 Can be solved by the stretchability of the first wrinkled portion 411-.

Although the two-sided wrinkle portions 41 are shown vertically, they may include three or more wrinkles as required. For example, the three corrugations may be arranged at an angle of 60 degrees with respect to each other.

The corrugated portion 41 provided on the auxiliary barrier 40 can be convex downward toward the lower insulating panel 20 and can be located at the boundary between two adjacent lower insulating panels 20. [ At this time, a chamfer is formed in the corner of the upper portion of the lower insulating panel 20 so as to accommodate the corrugation portion 41, so that interference with the corrugated portion 41 can be avoided.

The auxiliary barrier 40 sheet may be provided so as to extend across the plurality of lower insulating panels 20. [ The meaning of being laid over the lower insulating panel 20 includes the case of completely covering and the case of covering only partly. For example, in FIG. 1, it is shown that one auxiliary barrier 40 sheet is provided over eight lower insulating panels 20.

On the other hand, the edges of the sheets of the auxiliary barrier 40 are seated so as to deviate from the center line of the lower insulating panel 20. The edge of the auxiliary barrier 40 sheet is required to be fixed to the panel fixing unit 25 located at the center of the lower insulating panel 20 because it must be welded to the edge of the auxiliary barrier connecting member 24 and / In order to prevent overlapping. It has been described above that the interference between the auxiliary barrier 40 sheet and the panel fixing unit 25 can be prevented by forming the through hole 40a through which the projecting member 25b penetrates the auxiliary barrier 40 sheet.

The length L of one side of the auxiliary barrier 40 sheet is smaller than the number n of the lower insulating panel 20 by subtracting one from the number n of the bottom insulating panels 20 covered by the auxiliary barrier 40 sheet. The length D of the one side of the light-emitting diode chip. The length L of the precise sides of the secondary barrier 40 sheet can be determined by the distance spaced between adjacent lower insulating panels 20 and the spacing that overlaps when the secondary barrier 40 sheets are welded together. In the drawing, when the length of one side of the lower insulating panel 20 is a, the length of the longer side of the auxiliary barrier 40 is slightly larger than 3a and the length of the smaller side is slightly larger than a.

The auxiliary barrier 40 sheet is provided with a corrugated portion 41 accommodated in a boundary between the lower insulating panels 20. The corrugated portion 41 may be formed by a press method or the like. In the figure, three corrugations are formed on the long side of the auxiliary barrier 40, and one corrugation is formed on the small side.

A folding portion 41 corresponding to the boundary between the lower insulating panels 20 on which the sheet of the auxiliary barrier 40 covers is formed and the crossing portion 42 is formed on the sheet As shown in FIG. The through hole 40a through which the protruding member 25b penetrates is also biased in the opposite direction with respect to the center of one side of the sheet.

The panel fixing unit 25 is positioned at the center of the lower heat insulating panel 20 and the auxiliary wall connecting member 24 is positioned parallel to the edge of the lower heat insulating panel 20, And that the auxiliary barrier 40 is provided in a shape corresponding to the closed figure of the auxiliary barrier connecting member 24 formed by connecting the plurality of the bottom insulating panels 20 And the auxiliary barrier 40 is provided with a corrugated portion 41 accommodated in the boundary of the adjacent lower insulating panel 20 and the first corrugated portion 41-1 and the second corrugated portion 41 are formed at the portion where the four lower heat insulating panels 20 meet. And the second barrier rib 40 is provided with a through hole 40a through which the protruding member 25b of the panel fixing unit 25 can penetrate, ) Is a feature that facilitates fabrication and shortens fabrication time.

The lower first reinforcing panel 21 and the lower second reinforcing panel 22 are stacked and the plurality of lower heat insulating panels 20 having the auxiliary wall connecting member 24 and the panel fixing unit 25 are installed, It is possible to arrange the auxiliary barrier ribs 40 on the outer wall 10 by fixing the plurality of auxiliary barrier ribs 40 to the auxiliary barrier rib connecting member 24 and welding the sheets of the auxiliary barrier 40 to each other, It becomes. At this time, the auxiliary barriers 40 can be manufactured in the same manner as the sheets provided in the same shape.

The main welding of the auxiliary barrier 40 sheet and the auxiliary barrier 40 sheet can use an automatic welding device. In particular, welding of the corrugations of the auxiliary barrier 40 can also be performed using an automatic welding apparatus. At this time, in order to manually weld the worker to weld the sheets of the auxiliary barrier 40 and the auxiliary barrier 40 of thin thickness, or to use the automatic welding apparatus, Fit-Up. In particular, the use of automatic welding equipment is important to the work of the foot.

Up work may be performed by a fit-up zig (not shown) fixedly installed on the lower insulating panel 20. [ Up jig can be fixed to the auxiliary barrier 40 sheet by being engaged with the stud bolt projecting to the panel fixing unit 25 or by a suction type.

The worker can close the sheets of the auxiliary barrier 40 by pressing the sheet of the auxiliary barrier 40 covering the upper part with the use of the pick-up jig or by raising the sheet of the auxiliary barrier 40 which is placed below. At this time, in order to raise the sheet of the auxiliary barrier wall 40 placed below, an adsorption method and a bonding method can be used.

Usually, after the sheet of the auxiliary barrier 40 is wiped, the abutting is performed to fix the sheets of the auxiliary barrier 40 to each other. The sheets of auxiliary barrier 40 secured to each other are easily weldable by automatic welding equipment. In particular, in the case of a wrinkle portion including a curved portion, a sophisticated work of finishing is required in order to improve the welding quality by the automatic welding device.

The automatic welding apparatus performs welding while moving along a rail which is fixed to the lower insulating panel 20. [ Therefore, in order to use the automatic welding device, it is necessary to fix the rail around the welding line.

In the method of manufacturing the liquefied gas holding window according to the embodiment of the present invention, the rails can be fixed by using the panel fixing unit 25 for fixing the lower and upper insulating panels 20 and 30. It has been described that the protruding member 25b protruding for fixing the upper insulating panel 30 to the panel fixing unit 25 may be provided. The rails of the automatic welding apparatus may be fixedly coupled to the protruding members 25b of the panel fixing unit 25 and may be coupled to other shapes of coupling members (not shown) provided separately to the panel fixing unit 25 .

A panel fixing unit 25 may be provided at the center of the lower insulating panel 20 and an auxiliary barrier connecting member 24 may be provided at the side of the panel fixing unit 25. On the other hand, unlike the drawing, the auxiliary barrier connecting member 24 and the panel fixing unit 25 may be in contact without being separated from each other.

Next, a method of welding the sheet of the auxiliary barrier 40 using the automatic welding apparatus will be described.

It has been described that the sheet of the auxiliary barrier 40 is previously contacted to the auxiliary barrier connecting member 24 and the adjoining auxiliary barrier 40 sheets are contacted and fixed to each other. Now, by performing the main weld along a line (weld line) where the sheets of the two auxiliary walls 40 overlap or abut, the installation of the auxiliary barrier is completed. A rail can be installed near the weld line so that the automatic welding device can move along the weld line. In this case, when the rail and the weld line are provided in parallel, the welding quality can be improved and the working time can be shortened.

The rails can be fixed to a plurality of panel fixing units 25 arranged in one direction and installed parallel to the weld line. At this time, since the panel fixing unit 25 and the auxiliary barrier connecting member 24 are disposed adjacent to each other, the automatic welding apparatus installed on the rails can facilitate welding work along the weld line. After the automatic welding is completed, the rails are disassembled from the panel fixing unit 25.

The through hole 40a is formed so that the projecting member 25b of the panel fixing unit 25 penetrates through the sheet of the auxiliary barrier 40, as described above. In order to ensure the airtightness of the auxiliary barrier 40, the edge of the hole formed in the sheet of the auxiliary barrier 40 is welded to the panel fixing unit 25, and arc welding may be performed along the shape of the through hole 40a.

When welding of the auxiliary barrier 40 is completed, it is checked whether the airtightness is secured. As the inspection process, a method of injecting a test gas between the auxiliary barrier 40 and the lower insulating panel 20 and checking whether the test gas leaks to the outside can be used. If the inspection gas is detected from the outside as an inspection result, it is judged that the welding condition of the part is defective and re-welding is performed. On the other hand, if it is determined that the airtightness is ensured, the process for installing the upper insulating panel 30 proceeds to the next step.

Next, the process of installing the upper insulating panel 30 will be described with reference to FIG. 5 is a cross-sectional view showing an assembled state of the upper insulating panel.

The plurality of upper insulating panels 30 may be disposed adjacent to each other, and may be arranged in a lattice pattern, for example. It is meant that the upper insulating panels 30 are disposed adjacent to each other in the second direction as well as disposed adjacent to each other in the first direction.

An upper joint 33 may be inserted between the adjacent upper heat insulating panels 12. The upper joint 33 may be a thermal insulation material capable of filling a gap between the upper insulating panels 30, and a glass wool or the like may be used. The upper joint 33 may be installed after the upper insulating panel 30 is installed or attached to the side of the upper insulating panel 30.

If the distance between the lower insulating panels 20 is neglected (generally very narrow), the upper insulating panel 30 may be provided in an approximately multiples of the size of the lower insulating panel 20. In this case, the edge of the upper insulating panel 30 is aligned with the boundary between the lower insulating panels 20. Accordingly, the upper insulating panel 30 can be installed in a manner similar to the installation process of the lower insulating panel 20, thereby enhancing the convenience of manufacture.

If the corner of the upper heat insulating panel 30 does not coincide with the boundary of the lower heat insulating panel 20 but is staggered with the lower heat insulating panel 20, the upper heat insulating panel 30 is fixed to the lower heat insulating panel 20 A connecting panel (not shown) must be inserted into the gap between the upper insulating panels 30, and at this time, the connecting panel is fixed by bonding, which is inconvenient to manufacture.

The upper first reinforcing panel 31 may be coupled to the bottom surface so that the upper insulating panel 30 can be firmly fixed to the lower heat insulating panel 20. [ The upper first reinforcing panel 31 may be made of plywood or the like and attached to the bottom surface of the upper insulating panel 30 using an adhesive such as epoxy glue.

The upper insulating panel 30 and the upper first reinforcing panel 31 are formed with through holes 30a and 31a so that the projecting members 25b can pass through. The diameter of the through hole 31a formed in the upper first reinforcing panel 31 may be smaller than the diameter of the through hole 30a formed in the upper insulating panel 30.

The diameter of the through hole 31a formed in the upper first reinforcing panel 31 may be the same as the diameter of the protruding member 25b. The upper first reinforcing panel 31 is prevented from moving relative to the projecting member 25b.

The protruding member 25b is inserted into the through hole 30a formed at the center of the upper heat insulating panel 30 and joined with the nut and the nut is engaged with the protruding member 25b to form the upper first reinforcing panel 31 ). As a result, the upper heat insulating panel 30 to which the upper first reinforcing panel 31 is attached is joined to the lower heat insulating panel 20. At this time, the foam plug 30b may be inserted into the through hole 30a to maintain the heat insulating performance.

The upper insulating panel 30 may be provided in a size and shape corresponding to the area where the two lower insulating panels 20 are disposed adjacent to each other. For example, when the lower insulation panel 20 having a square (1 X 1) as viewed from above is provided as shown in the drawing, the upper insulation panel 30 has a rectangular shape having two sides of one side, (1 x 2). It is a matter of course that the ratio of the shape and length of the specific heat insulating panels 20 and 30 may be varied depending on the case.

The upper insulating panel 30 may be joined by one lower fixing panel 20 and one panel fixing unit 25 located at the center of the lower insulating panel 20. In this case, two panel fixing units 25 may be coupled to one upper insulating panel 30. By providing two fixing points on the upper heat insulating panel 30, rotation of the upper heat insulating panel is prevented.

If the shape and size of the upper insulating panel 30 are the same as those of the lower insulating panel 20 or the like, unlike the drawings, The upper and lower thermal insulation panels 30 and 20 are fixed to each other. However, in this case, the upper insulating panel 30 is allowed to rotate on the lower insulating panel 20.

If rotation of the upper insulating panel 30 is allowed, inconvenience may be caused in the manufacturing process. In particular, when the upper insulating panel 30 is installed on the side surface or the ceiling, the upper insulating panel 30 may rotate unintentionally, which may take time and effort to align them. Also, since the upper insulating panel 30 is allowed to rotate, stress may be generated between the adjacent upper heat insulating panels 30, thereby reducing the durability of the cargo window. Further, stress is concentrated on the main wall 20 fixed to the upper heat insulating panel 30, which may cause damage to the welded portion or the like.

In the above description, two or more lower heat insulating panels 20 are coupled to one upper heat insulating panel 30 to prevent rotation of the upper heat insulating panel 30. Alternatively, one upper insulating panel 30 And one lower insulating panel 20 are combined and a plurality of panel fixing units 25 are provided.

An upper second reinforcing panel 32 may be laminated on the top of the upper insulating panel 30 for installing the kitchen wall 50. The upper second reinforcing panel 32 may be made of plywood or the like and may be attached to the upper insulating panel 30 using an adhesive such as an epoxy glue or the like.

The upper wall of the upper insulating panel 12 may be provided with a kitchen wall connecting member 34. In particular, when the upper second reinforcing panel 32 is provided, the main body wall connecting member 34 can be coupled to the upper surface of the upper second reinforcing panel 32. The kitchen wall connecting member 34 is made of a metal such as SUS and can be welded to the kitchen wall 50 and mechanically coupled to the upper second reinforcing panel 32 by a rivet 34a or the like. The main body wall connecting member 34 may be received in the groove 32a formed in the upper second reinforcing panel 32 and may not protrude from the upper surface of the upper second reinforcing panel 32. [

In addition, the kitchen wall connecting members 34 may be provided in a strip shape and may be arranged in different directions to form intersections. For example, two strips orthogonal to each other. The kitchen wall connecting member 34 may be provided parallel to the edge of the facing upper insulating panel 30. In addition, the kitchen wall connecting member 34 may be provided in one strip or may be provided so that a plurality of strips are continuously connected.

A barrier wall member 35 for installing the kitchen wall 50 may be provided on the upper portion of the upper insulating panel 30. In particular, when the kitchen wall connecting member 34 is provided, the wall mounting member 35 may be provided on the upper portion of the kitchen wall connecting member 34.

It has been described above that a rail is to be installed for welding the seat of the secondary barrier 40 by using the automatic welding apparatus and a rail is provided for the panel fixing unit 25. [ Similarly, in order to weld a sheet of the kitchen wall 50 using an automatic welding apparatus, a barrier mounting member 35 capable of mounting a rail is required.

The barrier mounting member 35 may be a stud bolt provided at an intersection where the two-directional main body wall connecting members 34 are perpendicular to each other. The barrier mounting member 35 may be welded on the wall wall connecting member 34. [ The intersection where the two-way wall wall connecting member 34 provided with the barrier mounting member 35 meets may be a four-sheet intersection where four sheets of the kitchen wall 50 meet. The four sheets of the kitchen wall 50 may be welded around the barrier mounting member 35 when it is chamfered at the corner of the sheet of the kitchen wall 50 and may not interfere with the barrier mounting member 35. At this time, the corner portion of the seat of the kitchen wall 50 should be welded to the kitchen wall connecting member 34 to maintain airtightness.

The barrier mounting member 35 is for mounting the kitchen wall 50 and can be removed when the installation of the kitchen wall 50 is completed. This is because the operator can be treated as an obstacle when moving.

Next, the process of installing the kitchen wall 50 will be described with reference to FIGS. 1, 2, and 6. FIG. Fig. 6 is a perspective view showing a state of engagement of the kitchen wall. Fig.

The main body wall connecting member 34 is connected to the adjacent main body wall connecting member 34 (including those connected by a virtual extension line without being directly connected thereto) to form one closed figure. In Fig. 1, four upper insulating panels 30 are arranged adjacent to each other, and a rectangular shaped closed figure is formed by a main body wall connecting member 34 provided on the upper insulating panel 30. In Fig.

One sheet of the kitchen wall 50 constituting the kitchen wall 50 may be in a shape corresponding to the shape of the closed figure formed by the kitchen wall connecting member 34, The four corners may be disposed and fixed so as to overlap with the respective wall wall connecting members 34, respectively. In one example, the seat of the kitchen wall 50 may be fixed to the kitchen wall connecting member 34 in a tack welding manner.

After one sheet of the kitchen wall 50 is fixed, another sheet of the kitchen wall 50 can be fixed to the adjacent one side. At this time, one corner of the four corners of the kitchen wall 50 sheet adjoining to the pre-installed kitchen wall 50 sheet is arranged to overlap with the pre-installed kitchen wall 50 sheet and the other three corners are connected to the kitchen wall connecting member 34 ) And can be fixed. The fixing of the seat of the kitchen wall 50 and the fixing of the seat of the kitchen wall 50 and the fixing of the seat wall and the kitchen wall connecting member 34 of the kitchen wall 50 may use a tack welding method.

The above installation process is continuously performed to fix all the sheets of the kitchen wall 50 on the upper heat insulating panel 30. [ However, since it is still in a state of being in contact with the gap between adjacent sheets of the kitchen wall 50, it is necessary to perform this welding in order to maintain airtightness.

Both edges of the adjacent sheet of the kitchen wall 50 are welded by lap welding or butt welding, thereby ensuring airtightness. As a welding method that can be used at this time, a method used for welding the auxiliary barrier can be used, and of course, an automatic welding device can be used.

On the other hand, the kitchen wall connecting member 34 is located below the welding line (or welding seam) when the adjacent sheets of the kitchen wall 50 are welded together, thereby preventing the sheet of the kitchen wall 50 from being deformed by the welding heat . It is possible to prevent deformation of the sheet of the kitchen wall 50, which may be caused by high temperature, particularly when plasma welding is used. At this time, in the process of overlap welding or butt welding of the sheets of the kitchen wall 50, the welding heat is transmitted to the kitchen wall connecting member 34 to connect the lower kitchen wall connecting member 34 and the kitchen wall 50 located thereon, The sheets may be welded together.

The main welding of the kitchen wall 50 sheet and the kitchen wall 50 sheet can utilize automatic welding equipment. In particular, welding of the corrugated portion of the kitchen wall 50 can also use an automatic welding apparatus. At this time, in order to manually weld the worker to weld the sheet of the kitchen wall 50 and the sheet of the kitchen wall 50 with a thin thickness or to use the automatic welding apparatus, Fit-Up. In particular, the use of automatic welding equipment is important to the work of the foot.

Since the same method as the process of installing the auxiliary barrier 40 can be used for the work of the fatigue, a detailed description will be omitted. The pick-up jig (not shown) may be fixed to the sheet of the kitchen wall 50 by being engaged with or adsorbing to the barrier-attaching member 35 provided on the kitchen wall connecting member 34.

The automatic welding apparatus performs welding while moving along the rails that are installed to be fixed to the upper insulating panel (30). Therefore, in order to use the automatic welding device, it is necessary to fix the rail around the welding line.

In the method of manufacturing the liquefied gas holding window according to the embodiment of the present invention, the rails can be fixedly installed using a barrier mounting member 35 (for example, a stud bolt) provided on the kitchen wall connecting member 34.

Next, a method of welding the sheet of the kitchen wall 50 using the automatic welding apparatus will be described.

It has been described that the seat of the kitchen wall 50 is previously touched to the kitchen wall connecting member 34 and the adjacent sheets of the kitchen wall 50 are contacted and fixed to each other. Now, when the main welding is performed along the line (weld line) where the two kitchen wall 50 sheets overlap or abut, the installation of the kitchen wall is completed. A rail can be installed near the weld line so that the automatic welding device can move along the weld line. In this case, when the rail and the weld line are provided in parallel, the welding quality can be improved and the working time can be shortened.

The rail is fixed to a plurality of stud bolts arranged in one direction and installed parallel to the welding line, so that the automatic welding apparatus installed on the rail can facilitate the work of welding along the welding line. After automatic welding is completed, the rail is disassembled from the stud bolt.

When the welding of the kitchen wall 50 is completed, it is checked whether the airtightness is secured. As the inspection process, a method of injecting a test gas between the kitchen wall 50 and the upper heat insulating panel 30 and checking whether the test gas leaks to the outside can be used. If the inspection gas is detected from the outside as an inspection result, it is judged that the welding condition of the part is defective and re-welding is performed.

As described above, the heat insulating panel assembly installed in the flat plate portion has been described. Next, the lower thermal insulation panel structure installed at the corner will be described with reference to FIG. 7 is an exploded perspective view showing a state in which the corner portion auxiliary barrier 140 is engaged. The description of the heat insulating panel assembly installed in the corner portion can be applied as it is unless otherwise specified.

The lower insulating panel 120 is coupled so that two adiabatic panels meet at the interface with each other so as to correspond to the corner angle of the corner. Fig. 7 shows that two adiabatic panels each having a tilted interface of 45 degrees to correspond to a corner angle of 90 degrees meet so as to face each other. However, this is merely an example, and it is possible to form a variety of interfaces such that one of the heat insulating panels on one of the heat insulating panels can be joined at an angle of 90 degrees or have different angled interfaces with each other .

The lower heat insulating panel 120 can be coupled with a stud bolt 12 (see FIG. 2) provided at the corner of the outer wall 10, and can be closed by inserting the foam plug 120b. A lower first reinforcing panel 121 for coupling with the outer wall 10 is formed on the lower portion of the lower insulating panel 120 and a lower first reinforcing panel 121 is formed on the lower insulating panel 120 for coupling with the auxiliary wall 140. [ The second reinforcing panel 122 can be stacked and fixed. The description is the same as the lower insulating panel 20 (see Fig. 2) installed in the flat plate portion.

On the upper surface of the lower second reinforcing panel 122, a groove 122a capable of receiving the panel fixing unit 125 is formed. The panel fixing unit 125 includes an engaging portion 125a accommodated in and coupled to the lower second reinforcing panel 122, a protruding member 125b provided with a stud bolt or the like protruding from the engaging portion 125a, And a rivet 125c for fixing the second reinforcing panel 125a to the lower second reinforcing panel 122. [

The auxiliary barrier 140 includes a curved surface portion 140a provided in a curved shape at a position corresponding to an interface where the lower heat insulating panels 120 in different directions meet and a curved surface portion 140b extending from both sides of the curved surface portion 140a, And a pair of planar portions 140b fixed to the lower heat insulating panel 120 in the direction of the arrows.

The auxiliary barrier 140 is formed of a single sheet of the auxiliary barrier 140 and is hardly formed at the corner angle of the lower heat insulating panel 120 because it is repeatedly subjected to thermal contraction and thermal expansion in a cryogenic environment. Therefore, the curved surface portion 140a is provided at the interface portion bent by 90 degrees. The curved surface portion 140a and the flat surface portions 140b on both sides are separated for the sake of convenience and can be manufactured by processing one auxiliary barrier 140 sheet. It is also possible for the entire auxiliary barrier 140 to be formed of the curved portion 140a without the flat portion 140b.

An auxiliary barrier support member 123 may be inserted between the curved surface portion 140a and the lower heat insulating panel 120. [ The bottom side surfaces of the auxiliary barrier support member 123 correspond to the boundary corner shapes of the lower heat insulating panel 120 and the upper side surfaces can correspond to the shapes of the curved surface portions 140a. The auxiliary barrier support member 123 supports the lower portion of the curved surface portion 140a to prevent the curved surface portion 140a from being deformed by an external force.

The secondary barrier 140 may be mechanically coupled to the lower insulating panel 120 by a rivet 142 or the like. It is also possible that an auxiliary barrier connecting member (not shown in FIG. 3, not shown) is provided on the lower second reinforcing panel 122, and the auxiliary barrier 140 is welded to the auxiliary barrier connecting member . This is the same as the joining method of the flat plate auxiliary barrier 40, and thus a detailed description thereof will be omitted.

Meanwhile, the lower second reinforcing panel 122 may be provided with a groove 122b capable of receiving the auxiliary barrier 140. Therefore, the flat portion 140b of the auxiliary barrier 140 may not protrude from the lower second reinforcing panel 122. In addition, both sides of the auxiliary barrier 140 may not extend to the edge of the lower insulating panel 120. That is, the auxiliary barrier 140 may be arranged to be received in the central portion of the lower adiabatic panel 120.

When the corner auxiliary walls 140 are provided on the adjacent lower insulating panels 120, the adjacent corner adjacent auxiliary walls 140 are positioned apart from each other. At this time, the adjacent corner auxiliary barrier 140 can be connected by the connection auxiliary barrier 143. The connection auxiliary barrier 143 may include a curved surface portion 142a such as the corner auxiliary barrier 140 and a pair of flat surface portions 142b extending toward both sides and closely contacting the lower heat insulating panel 120. [

Both side ends of the connection auxiliary barrier 143 may be connected to overlap the corner auxiliary barrier 140 and may be connected by lap welding to secure the airtightness of the corner auxiliary barrier 140. Further, the connection auxiliary barrier 143 may include a corrugation 143a. The corrugation 143a may be formed to be recessed downward and may be accommodated in the boundary of the adjacent corner lower insulation panel 120 after it is installed on the corner supplementary barrier 140.

Next, referring to FIGS. 8 to 10, a description will be made of how the auxiliary barrier 150 installed at the corner portion and the auxiliary barrier 40 installed at the flat plate portion according to the embodiment of the present invention are combined. FIG. 8 is an exploded perspective view showing a state in which the corner portion auxiliary barrier 150 according to the embodiment of the present invention is engaged. FIG. 9 is a perspective view illustrating the corner portion auxiliary barrier 150 and the plate portion auxiliary barrier 40 10 is a perspective view illustrating a state in which a corner auxiliary wall 150 and a flat plate auxiliary wall 40 are connected to each other according to an embodiment of the present invention.

Next, a description will be made of an installation of the corner portion auxiliary barrier 140 according to the embodiment of the present invention with reference to FIGS. 8 to 12. FIG. FIG. 8 shows a state in which the corner auxiliary wall 140 is installed, FIG. 9 shows a state in which the connection auxiliary barrier 150 is installed, FIG. 10 shows a state in which the plate auxiliary wall 40 is provided, And the wrinkle part caps 161 and 162 are installed. 12 is an exploded perspective view showing a state in which the corrugated-end caps 161 and 162 are installed.

The liquefied gas holding window according to the embodiment of the present invention is configured such that the corrugated portion 41 of the plate portion auxiliary barrier and the corrugated portion 151 of the corner portion auxiliary barrier are arranged to be offset from each other, It is possible to save labor and time required for matching the corrugated portions 151 of the auxiliary auxiliary barrier.

If the corrugated portion 151 of the corner portion auxiliary barrier and the corrugated portion 41 of the flat plate portion auxiliary barrier are matched with each other, a separate marking for aligning the two corrugated portions 151, ) Work is required, and such a work requires a sophisticated work, and since the work difficulty is high, there arises a problem that the installation period is lengthened.

Therefore, the liquefied gas holding window according to the embodiment of the present invention is configured such that the corrugated portion 41 of the flat plate auxiliary barrier and the corrugated portion 151 of the corner supplementary barrier are arranged to be offset from each other, The effort and time required to align the corrugated portion 151 of the corner portion auxiliary barrier can be saved.

Referring to FIG. 8, the liquefied gas holding window according to the embodiment of the present invention is one embodiment for arranging the wing portions 41 and 151 of the flat plate auxiliary barrier 40 and the corner portion auxiliary barrier 140 in a shifted manner The flat lower part heat insulating panel 20 and the corner lower heat insulating panel 120 are arranged so as to be offset from each other. As shown in the figure, the boundaries of the lower-portion insulating panel 20 adjacent to the lower-side corner portion of the lower-portion insulating panel 120, which are arranged adjacent to each other in the second direction, Able to know.

The corrugated portion 41 of the flat plate auxiliary barrier is received at the boundary of the adjacent flat plate lower insulating panel 20 and the corrugated portion 151 of the corner auxiliary barrier Corrugated portion) are accommodated in the boundaries of the adjacent corner lower heat-insulating panel 120 in the adjacent corners. Therefore, the corrugated portion 151 of the corner portion auxiliary barrier and the corrugated portion 41 of the flat portion auxiliary barrier are shifted from each other as a result of shifting the arrangement of the lower heat insulating panels 20, 120.

Referring to FIG. 9, the connection auxiliary barrier 150 is installed such that both ends of the connection auxiliary barrier 150 are seated on the adjacent corner auxiliary barrier 140. For example, the connection between the corner auxiliary barrier 140 and the connection auxiliary barrier 150 may be welded. 9, the connection auxiliary barrier 150 includes a corrugated portion 151 formed in a first direction and a corrugated portion 151 disposed in a first direction at a boundary of the adjacent corner lower insulating panel 120 Respectively.

Referring to FIG. 10, the flat plate auxiliary barrier 40 may be installed such that one end thereof is positioned inside the corner of the corner auxiliary barrier 140 and the connection auxiliary barrier 150. Overlapping welding may be possible by the flat plate auxiliary barrier 40 covering the corners of the corner auxiliary barrier 140 and the connection auxiliary barrier 150. In this case, since the flat bottom part auxiliary barrier 40 is provided with the first corrugated part 41-1 to be lowered, the corner lower part insulation panel 120 and the corner part auxiliary barrier 140 or the connection auxiliary barrier 150 May be interfered with.

In order to solve the problem that the first corrugated portion 41-1 of the flat plate auxiliary barrier 40 and the corner lower insulation panel 120 interfere with each other, the corner lower insulation panel 120 is provided with the corrugation receiving grooves 122c ). 9, the wrinkle receiving grooves 122c are provided at the positions where the first wrinkled portions 41-1 of the flat plate auxiliary barrier 40 are disposed, and the first wrinkled portions 41-1 are received It can be provided with a depth and width that can be used.

In order to solve the problem that the first corrugated portion 41-1 of the flat plate auxiliary barrier 40 and the corner auxiliary barrier 140 or the connection auxiliary barrier 150 interfere with each other, The first corrugation 41-1 of the flat plate auxiliary barrier 40 is closed at the inside of the edge of the flat plate auxiliary barrier 40 by the area where the flat plate auxiliary barrier 40 overlaps the corner auxiliary barrier 140 or the connection auxiliary barrier 150 . The term " closed inside " includes not only that the corrugation portion is converged to the flat portion of the secondary barrier but also the corrugation portion is cut. 10, the first corrugated portion 41-1 is cut by an area overlapping the corner auxiliary barrier 140. [

The interference problem that may occur during installation of the flat plate auxiliary barrier 40 due to the cutting of the wrinkle receiving groove 122c and the first wrinkle portion 41-1 is solved. The first wrinkle portion 41-1 is converged to the flat portion of the flat plate auxiliary barrier 40. In this case, there is no problem in maintaining the airtightness of the auxiliary barrier. However, when the end portion of the first wrinkle portion 41-1 is cut as shown in FIG. 10, an opening is formed between the end portion of the first wrinkle portion 41-1 and the corner auxiliary barrier 140. FIG.

This problem also occurs in the corrugated portion 151 of the connection auxiliary barrier. 10, the flat plate auxiliary barrier 40 is provided so as to cover the connection auxiliary barrier 150, but the corrugated portion 41 of the flat plate auxiliary barrier and the corrugated portion 151 of the connection auxiliary barrier are arranged so as to be offset from each other As a result, an opening is formed between the edge of the corrugated portion 151 of the connection auxiliary barrier and the flat plate auxiliary barrier 40.

When the space of the wrinkle portion is exposed as described above, the opening portion of the wrinkle portion to be opened must be closed because the auxiliary barrier functioning to seal the lower insulating panel can not be performed.

Referring to FIGS. 11 and 12, the first end cap 161 and the second end cap 162 for maintaining the airtightness of the auxiliary barrier wall will be described.

The liquefied gas holding window according to the embodiment of the present invention includes a first end cap 161 for closing and connecting the end portion of the corrugation 151 of the connection auxiliary barrier to the flat portion of the adjacent flat portion auxiliary barrier 40 . The first end cap 161 may be fixed on one end of the corrugation 151 of the connection auxiliary barrier and the other side thereof may be fixed on the flat plate auxiliary barrier 40.

In addition, the liquefied gas holding window according to the embodiment of the present invention includes a second end cap 162 for closing the end portion of the corrugation 41 of the flat plate auxiliary barrier to the flat portion of the adjacent corner supplementary barrier 140, . ≪ / RTI > The second end cap 162 may be fixed to one end of the corrugation 41 of the flat plate sub barrier and one side of the second end cap 162 may be fixed on the corner auxiliary barrier 140.

The first end cap 161 and the second end cap 162 may include a step for sealing contact with the auxiliary barrier. The corner portion auxiliary barrier 140 and the flat plate auxiliary barrier 40 may be joined by welding or the like while overlapping a part of the corner portion. In this case, a step is generated in the overlapping portion. The first and second end caps 162 may hermetically contact the auxiliary wall having a different height, including a step corresponding to the stepped portion.

Although the separate end cap is attached and fixed on the auxiliary barrier, the auxiliary barrier and the end cap are integrally formed. In other words, the corrugated portion 41 of the flat portion auxiliary barrier can be finished while converging on the flat portion without continuing to the corners, and the corrugated portion 151 of the connection auxiliary barrier can be converged to the flat portion of the connection auxiliary barrier 150 . However, when the end cap is provided with a separate member as shown in the drawing, the effort and cost of molding the corrugated portion of the barrier wall can be reduced.

Although not shown in the drawing, a slit (not shown) may be formed at the edge of the flat plate auxiliary barrier 40 on which the first end cap 161 is seated. At this time, the slit should not be exposed to the outside while the first end cap 161 is seated. The first end cap 161 also contracts or expands in accordance with the contraction or expansion of the wrinkles of the connection portion auxiliary barrier. At this time, the slits are provided at the corners of the flat plate auxiliary barrier 40 on which the first end cap 161 is seated, thereby permitting thermal deformation of the first end cap 161.

Likewise, a slit (not shown) may also be formed at the corner of the corner portion auxiliary barrier 140 on which the second end cap 162 is seated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, You will understand. Accordingly, the true scope of the invention should be determined only by the appended claims.

10: outer wall, 11: mastic,
12: Stud bolt, 13: Level pad
20: lower insulation panel, 20a: through hole,
20b: foam plug, 21: lower first reinforcing panel,
21a: Through hole, 22: Lower second reinforcing panel,
22a, 22b: groove, 23: lower joint,
24: auxiliary barrier connecting member, 24a: rivet,
25: a panel fixing unit, 25a: a coupling portion,
25b: projecting member, 25c: rivet,
30: Upper insulation panel, 30a: Through hole,
30b: foam plug, 31: upper first reinforcing panel,
31a: through hole, 32: upper second reinforcing panel,
32a: groove, 33: upper joint,
34: Kitchen wall connecting member, 34a: Rivet,
35: barrier mounting member, 40: auxiliary barrier,
40a: through hole, 41: wrinkle portion,
42: intersection, 50: kitchen wall,
51: wrinkle portion, 52: intersection portion,
120: corner portion lower insulation panel, 120b: foam plug,
121: corner first lower reinforcement panel, 122: corner second lower reinforcement panel,
122a, 122b: groove, 122c: wrinkle receiving groove,
123: auxiliary barrier supporting member, 125: panel fixing unit,
125a: engaging portion, 125b: projecting member,
125c: rivet, 140: corner portion auxiliary barrier,
140a: a curved surface portion, 140b: a flat surface portion,
141: a wrinkle portion, 142: a rivet,
150: connection auxiliary barrier, 151: wrinkle,
161: first end cap, 162: second end cap.

Claims (13)

A liquefied gas holding window provided on an outer wall including a corner portion and a flat plate portion,
A corner lower insulation panel provided adjacent to the corner portion along the corner;
A lower flat panel lower insulation panel installed adjacent to the flat plate in a first direction and a second direction, respectively;
A corner sub-barrier laminated on the corner portion lower heat-insulating panel to seal the corner lower heat-insulating panel; And
And a flat panel auxiliary barrier laminated on the flat panel lower insulation panel to seal the flat panel lower insulation panel,
And at least one of the corrugations formed on the corner portion auxiliary barrier is arranged to be offset from the corrugation of the flat plate auxiliary barrier. The method according to claim 1,
And an end portion of the wrinkle portion of the corner portion auxiliary barrier arranged to be shifted is connected to the flat portion of the adjacent flat plate portion auxiliary barrier to maintain a sealed state. 3. The method of claim 2,
Wherein at least one of the corrugations of the flat plate auxiliary barrier is disposed so as to be offset from the corrugation of the corner portion auxiliary barrier,
Wherein the edge portion of the corrugated portion of the flat plate portion auxiliary barrier arranged to be shifted is connected to the flat portion of the adjoining corner portion auxiliary barrier to maintain a sealed state. The method according to claim 1,
And the end portion of the corrugated portion of the corrugated portion of the corner portion auxiliary barrier disposed to be offset from the corrugated portion of the flat plate portion auxiliary barrier is closed by the first end cap to maintain the sealed state. 5. The method of claim 4,
Wherein the first end cap is fixed on one end of the corrugation of the corner auxiliary barrier and the other side is fixed on the flat plate auxiliary barrier. The method of claim 3,
And the end of the corrugated portion of the corrugated portion of the flat plate portion auxiliary barrier arranged to be offset from the corrugated portion of the corner portion secondary barrier is closed by the second end cap to maintain the sealed state. The method according to claim 6,
Wherein the second end cap has one side fixed on an end of the corrugation of the flat plate auxiliary barrier and the other side fixed on the corner supplementary barrier. 4. The method according to any one of claims 1 to 3,
Wherein the corrugation of the corner portion secondary barrier and the corrugation of the flat portion secondary barrier are recessed downwardly,
Wherein a corrugation of the corner auxiliary barrier is received at a boundary between the adjacent corner lower insulation panels and a corrugation of the flat plate auxiliary barrier is received at a boundary between the adjacent flat plate lower insulation panels. 4. The method according to any one of claims 1 to 3,
And a boundary between the corner lower insulation panel and a boundary between the lower plate and the lower insulation panel is offset from each other. 4. The method according to any one of claims 1 to 3,
And one side of the flat plate auxiliary barrier laminated on the lower flat plate portion adjacent to the lower portion of the corner portion is laid over the adjacent lower flat plate. 11. The method of claim 10,
Wherein the corrugation of the corner auxiliary wall and the corrugation of the flat wall auxiliary wall are provided so as to extend downwardly so that the corrugation of the corner auxiliary wall is received at the boundary between the adjacent corner lower insulation panels, And the corrugations of the barrier are accommodated in the boundary between the adjacent flat plate lower insulation panels. 12. The method of claim 11,
And a boundary between the corner lower insulation panel and a boundary between the lower insulation panel and the flat plate is offset from each other,
And a corrugation receiving groove capable of receiving a corrugation of the flat plate auxiliary barrier is provided in the corner heat insulation panel. 13. The method of claim 12,
One side of the flat plate auxiliary barrier is provided so as to cover the corner of the corner auxiliary barrier and one end of the corrugation of the flat plate auxiliary barrier is closed inside the flat plate auxiliary barrier edge so as not to interfere with the corner auxiliary barrier. Liquefied gas holdings.

Images