KR20160017220A - Cargo for liquefied gas and manufactuaring method thereof - Google Patents

Cargo for liquefied gas and manufactuaring method thereof Download PDF

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Publication number
KR20160017220A
KR20160017220A KR1020140098762A KR20140098762A KR20160017220A KR 20160017220 A KR20160017220 A KR 20160017220A KR 1020140098762 A KR1020140098762 A KR 1020140098762A KR 20140098762 A KR20140098762 A KR 20140098762A KR 20160017220 A KR20160017220 A KR 20160017220A
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KR
South Korea
Prior art keywords
panel
insulating panel
heat insulating
auxiliary barrier
insulation
Prior art date
Application number
KR1020140098762A
Other languages
Korean (ko)
Inventor
양진혁
김민규
박동희
윤인근
이승연
이재훈
임승범
전상언
정왕조
Original Assignee
삼성중공업 주식회사
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Application filed by 삼성중공업 주식회사 filed Critical 삼성중공업 주식회사
Priority to KR1020140098762A priority Critical patent/KR20160017220A/en
Publication of KR20160017220A publication Critical patent/KR20160017220A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/06—Coverings, e.g. for insulating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A liquefied gas holding window including an insulating panel structure and a manufacturing method thereof are disclosed. A liquefied gas holding window according to an embodiment of the present invention is installed on an outer wall including a corner portion and a flat surface portion. The liquefied gas holding window includes a first flat surface portion, a three-sided corner panel Wherein the three-sided corner panel unit comprises an upper insulating panel laminated on the lower insulating panel and the lower insulating panel, the lower insulating panel comprising a lower first insulating panel disposed on the first plane portion, And a lower third insulated panel disposed on the third flat surface portion, wherein the upper insulating panel includes an upper first heat insulating panel disposed on the first flat surface portion and a second upper surface insulating panel disposed on the second flat surface portion, And a lower third insulated panel disposed on the third flat portion, wherein the lower first insulated panel, the lower second insulated panel, and the lower third insulated panel are formed as separate pieces To constitute a lower heat insulating panel, The first insulating panel, the upper second insulating panel, and the upper third insulating panel are joined to each other as separate pieces to constitute an upper insulating panel.

Description

TECHNICAL FIELD [0001] The present invention relates to a liquefied gas-

The present invention relates to a liquefied gas holding window and a method of manufacturing the same, and more particularly, to a liquefied gas holding window including a heat insulating panel structure and a manufacturing method thereof.

Liquefied gas is a liquid made by cooling or compressing gas, and consumption of liquefied gas such as Liquefied Natural Gas (LPG) or LPG (Liquefied Petroleum Gas) is rapidly increasing worldwide.

Liquefied natural gas (LNG), which is an example of liquefied gas, refers to a colorless transparent cryogenic liquid having a volume of methane-based natural gas cooled to -162 ° C and reducing its volume by one-sixth, In order to utilize natural gas as energy, efficient transportation methods have been examined that can be mass-shipped from the production base to the destination of the demand site. As part of this effort, a liquefied natural gas transport vessel capable of transporting large volumes of liquefied natural gas to sea was developed.

The liquefied natural gas transportation vessel must have a cargo which can store and store the liquefied natural gas liquefied at a cryogenic 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 cargo hold of a liquefied natural gas transportation vessel can be divided into a self-supporting type and a membrane type depending on its structure.

Korean Patent Laid-Open Publication No. 10-2012-0013233 (Feb. 14, 2012) discloses a liquefied natural gas storage tank and a manufacturing method thereof.

Korean Published Patent Application No. 10-2012-0013233 (2012.02.14.)

An embodiment of the present invention is intended to provide a liquefied gas holding window that can facilitate the installation of a heat insulating panel provided at a corner portion of three sides where three surfaces meet.

According to an aspect of the present invention, there is provided a liquefied gas holding window provided on an outer wall including a corner portion and a flat surface portion, the liquefied gas holding window including a first corner portion, a second corner portion, Wherein the three-sided corner panel unit comprises a lower insulation panel and an upper insulation panel laminated on the lower insulation panel, the lower insulation panel comprising a lower first insulation A lower second insulated panel disposed on the second flat surface portion, and a lower third insulated panel disposed on the third flat surface portion, wherein the upper insulating panel is disposed on the first flat surface portion And an upper third heat insulating panel disposed on the third flat surface portion, wherein the lower first heat insulating panel and the lower first heat insulating panel are disposed on the second flat surface portion, The second insulation panel and the lower third insulation panel The upper first and second upper and lower heat insulating panels and the upper third and the upper third heat insulating panels are joined to each other to form a liquefied gas cargo hold constituting the upper heat insulating panel, Can be provided.

A liquefied gas holding window is provided in which an angle between an interface between the lower first insulating panel and the lower second insulating panel and an angle between the first plane portion and the first plane portion is half of an angle between the first plane portion and the second plane portion .

Wherein an angle between an interface between the upper first insulation panel and the upper second insulation panel and an angle between the first plane portion and an interface between the lower first insulation panel and the lower second insulation panel is greater than an angle between the interface between the lower first insulation panel and the lower second insulation panel, A liquefied gas holding window provided in the same manner can be provided.

Wherein the auxiliary barrier is provided so as to bend in three directions, the first surface being connected to the lower first insulation panel, the second surface to the lower second insulation panel, And a third side may be provided with a liquefied gas holding window adapted to be seated on the lower third adiabatic panel.

And a main wall laminated on the upper insulating panel, wherein the main wall is bent in three directions, the first surface being connected to the upper first insulating panel, the second surface to the upper second insulating panel, And the third surface may be provided with a liquefied gas holding window adapted to be seated on the upper third insulating panel.

A liquefied gas holding window may be provided on the lower insulating panel to form an auxiliary barrier receiving groove in which the auxiliary barrier is received.

A liquefied gas holding window may be provided on the upper insulating panel to form a kitchen wall receiving groove in which the kitchen wall is received.

According to another aspect of the present invention, a three-sided corner panel unit is provided on a three-sided corner portion where a first plane portion, a second plane portion and a third plane portion meet, and a lower first heat- And a lower second heat insulating panel is provided on the second flat surface portion so as to be installed on the 12th direction boundary surface of the lower first heat insulating panel, and on the third flat surface portion, And a lower third heat insulating panel is installed on the boundary surface of the lower second adiabatic panel and the 23rd direction interface of the lower second adiabatic panel.

The upper first heat insulating panel is provided on the lower first heat insulating panel and the lower first heat insulating panel is provided on the lower first heat insulating panel, And a second upper heat insulating panel is provided on the lower third heat insulating panel so as to be disposed on a boundary surface between the thirteenth direction of the upper first heat insulating panel and the 23rd direction of the upper second heat insulating panel, A method of manufacturing a liquefied gas holding window for installing a three-insulation panel can be provided.

The liquefied gas holding window according to the embodiment of the present invention can be manufactured in a size and weight enough to be handled by an operator by separating the heat insulating panel units installed at the positions where the three sides meet, Convenience is increased.

In addition, it is possible to easily adjust the angle in combining the pieces, thereby improving the precision of the work in response to the manufacturing error and the installation error.

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.
7 is a perspective view showing a state in which a lower heat insulating panel is installed on an outer wall including a corner portion.
Fig. 8 is a perspective view showing a state in which the heat insulating panel of the three-sided corner portion is engaged.
FIG. 9 is an exploded perspective view showing a state of engagement of the lower heat insulating panel. FIG.
10 is an exploded perspective view showing a state of engagement of the upper heat insulating panel.

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 portion and a corner portion. The heat insulating panel assembly includes an insulating panel assembly installed on a flat surface portion and an insulating panel assembly installed on a corner portion. The corner portion connects the flat 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 surface 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 fixedly installed using the panel fixing unit 25 for fixing the lower insulating panel 20 and the upper insulating panel 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 fixed by using a barrier attachment 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 is provided on the flat surface. Next, the lower thermal insulation panel structure installed at the corner will be described with reference to FIG. 7 is a perspective view showing a state in which a lower heat insulating panel 120 is installed on an outer wall 10 including a corner portion. The description of the heat insulating panel assembly installed at the corner portion can be applied as it is unless otherwise specified.

FIG. 7 shows a state in which a lower insulating panel is installed on an outer wall including a first plane portion P1, a second plane portion P2, and a third plane portion P3. A corner lower insulation panel 120, a lower auxiliary barrier 140 and a connection auxiliary barrier 143 are installed in the first corner portion C1 where the first plane portion P1 and the second plane portion P2 meet The lower corner barrier 120 and the lower auxiliary barrier 140 and the connection auxiliary barrier 143 are installed in the second corner portion C2 where the first plane portion P1 and the third plane portion P3 meet. do.

Since the first plane portion P1 and the second plane portion P2 meet at an angle of 90 degrees, the lower adiabatic panel 120 of the first corner portion C1 is bent at an angle of 90 degrees. Since the first plane portion P1 and the third plane portion P3 are at an angle of 120 degrees, the lower adiabatic panel 120 of the second corner portion C2 is bent at an angle of 120 degrees. However, the bending angles of the first corner portion C1 and the second corner portion C2 may vary depending on the shape of the cargo hold. Although the corner portion where the second flat surface portion P2 and the third flat surface portion P3 meet is not shown in the drawing, the shape of the first corner portion C1 and the second corner portion C2 can be applied as they are have.

10, a three-sided corner panel unit 100 (see FIG. 10) provided on a three-sided corner portion where the first plane portion P1, the second plane portion P2 and the third plane portion P3 meet, Will be described. 9 is an exploded perspective view showing a state in which the lower heat insulating panel 120 is coupled and FIG. 10 is an exploded perspective view of the upper heat insulating panel 130. FIG. 8 is a perspective view showing a state where the heat insulating panels 120, And FIG.

The three-sided corner panel unit 100 includes a lower insulating panel 120 and an auxiliary barrier 140 provided on the lower insulating panel 120 and an upper insulating panel 130 stacked and fixed on the lower insulating panel 120. [ And a kitchen wall 150 provided on the upper insulating panel 130.

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.

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 lower heat insulating panel includes a lower first heat insulating panel L1 disposed on the first flat surface portion P1, a lower second heat insulating panel L2 disposed on the second flat surface portion P2, and a third flat surface portion P3 The upper insulating panel includes an upper first heat insulating panel U1 disposed on the first flat surface portion P1 and a second upper insulating panel U1 disposed on the second flat surface portion P2, And an upper third heat insulating panel U3 disposed on the third flat surface portion P3.

The lower first heat insulating panel L1, the lower second heat insulating panel L2 and the lower third heat insulating panel L3 are joined to each other to form a lower heat insulating panel 120, U1, the upper second heat insulating panel U2, and the upper third heat insulating panel U3 are joined to each other to form an upper heat insulating panel 130.

When the lower heat insulation panel 120 of the three-sided corner panel unit 100 is not provided as a separate piece, but is integrally formed, the size and weight of the lower insulation panel 120 may increase, resulting in difficulty in installation. Therefore, the lower heat insulating panel 120 of the three-sided corner panel unit 100 according to the embodiment of the present invention is divided into the lower heat insulating panel pieces disposed on the respective flat portions.

Similarly, when the upper heat insulation panels 130 of the three-sided corner panel unit 100 are not provided as separate pieces but are integrally formed, the size and weight of the upper insulation panels 130 may increase, which may result in difficulty in installation. Therefore, the upper heat insulation panel 130 of the three-sided corner panel unit 100 according to the embodiment of the present invention is divided into the upper heat insulation panel pieces disposed on the respective flat portions.

The lower first insulating panel L1 and the lower second insulating panel L2 can be brought into contact with the twelve directional interface B12 so as to correspond to the corner angle of the first corner C1. Here, the twelfth direction means a direction in which the lower first insulating panel L1 and the lower second insulating panel L2 face each other. The angle between the twelfth direction interface B12 and the first plane portion P1 where the lower first and second heat insulating panels L1 and L2 meet is the angle between the first plane portion P1 and the second plane portion P1, (P2), as shown in Fig. That is, when the angle of the first corner C1 is 90 degrees, the lower first insulating panel L1 and the twelfth direction interface B12, and between the second lower heat insulating panel L2 and the twelfth direction interface B12 May be 45 degrees.

By making the angle of the interface half, the lower insulating panel 120 can be easily manufactured. In addition, the load of the heat insulating panel assembly can be uniformly dispersed, and stress can be uniformly applied between the adjacent lower heat insulating panels when deformation occurs on the outer wall, thereby preventing stress from concentrating on any one of the lower heat insulating panels. Further, by increasing the area of the interface, adhesion strength can be increased when bonding is performed between adjacent lower heat-insulating panels.

Likewise, the lower first and second heat insulating panels L1 and L3 may be brought into contact with the thirteenth direction boundary surface B13 so as to correspond to the corner angle of the second corner portion C2. Here, the thirteenth direction refers to a direction in which the lower first heat insulating panel L1 and the lower third heat insulating panel L3 face each other. The angle between the 13th direction interface B13 and the first plane portion P1 at which the lower first and second heat insulating panels L1 and L3 meet is smaller than the angle between the first plane portion P1 and the third plane portion P1, (P3). That is, when the angle of the second corner portion C2 is 120 degrees, the lower first heat insulating panel L1 and the 13th direction boundary surface B13, and between the lower third heat insulating panel L3 and the 13th direction boundary surface B13 May be 60 degrees.

On the other hand, the angle between the twelfth direction interface B12 and the first plane portion P1 where the upper first insulating panel U1 and the upper second insulating panel U2 meet is smaller than the angle between the lower first insulating panel L1 and lower May be the same as the angle between the twelfth direction interface B12 and the first plane portion P1 where the second adiabatic panel L2 meets.

The auxiliary barrier 140 includes a curved surface portion 140a provided at a position corresponding to an interface B (B12, B13, B23) where the lower insulating panels 120 in different directions meet, a curved surface portion 140a, And a pair of planar portions 140b extending from both sides of the lower insulating panel 120 and fixed to the lower insulating panels 120 in different directions.

The auxiliary barrier 140 is provided so as to bend in three directions so that the first surface is connected to the lower first insulating panel L1, the second surface is connected to the lower second insulating panel L2, L3). ≪ / RTI > At this time, the flat surface portion 140b is seated on the lower heat insulating panel 120, and the curved surface portion 140a is separated from the lower heat insulating panel 120 and connects the adjacent flat surface portion 140b.

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. 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 (not shown) 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 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 supports the lower portion of the curved portion 140a to prevent the curved portion 140a from being deformed by an external force.

The auxiliary barrier 140 may be mechanically coupled to the lower insulating panel 120 by a rivet 140c 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 planar auxiliary barriers 40, and a detailed description thereof will be omitted.

Meanwhile, the lower second reinforcing panel 122 may be provided with an auxiliary barrier receiving 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 provided at a central portion of the lower insulating panel 120.

7, the auxiliary barrier of the three-sided corner panel unit 100 may be connected by the adjacent corner auxiliary barrier and the connection auxiliary barrier 143 (see FIG. 7). One end of the connection auxiliary barrier 143 may be connected to be overlapped with the three-sided corner sub-barrier and may be connected by lap welding or the like and the other end may be connected to overlap the adjacent corner sub-barrier. In addition, the connection auxiliary barrier 143 may include a wrinkle portion. The corrugations can be of a shape recessed downward and can be received at the boundaries of the adjacent corner lower insulation panels after they are placed on the corner secondary walls.

The upper insulating panel 130 can be coupled to the protruding member 122b provided on the lower heat insulating panel 120 and can be closed by inserting the foam plug 130b. An upper first reinforcing panel 131 for joining with the lower heat insulating panel 120 is formed on the lower part of the upper heat insulating panel 130 and a connection with the kitchen wall 150 is formed on the upper part of the upper heat insulating panel 130 The upper second reinforcing panel 132 may be laminated and fixed. The description is the same as the upper insulating panel 30 (see FIG.

The kitchen wall 150 includes a curved surface portion 150a provided at a position corresponding to the boundary surfaces B (B12, B13 and B23) where the upper insulating panels 130 in different directions meet, a curved surface portion 150a, And a pair of flat portions 150b extending from both sides of the upper insulating panel 130 and fixed to upper insulating panels 130 in different directions.

The kitchen wall 150 is provided so as to bend in three directions so that the first surface is connected to the upper first heat insulating panel U1, the second surface is connected to the upper second heat insulating panel U2, (U3). At this time, the flat surface portion 150b is seated on the upper heat insulating panel 130, and the curved surface portion 150a is separated from the upper heat insulating panel 130 to connect the adjacent flat surface portion 150b.

Since the kitchen wall 150 is formed of a single sheet of the kitchen wall 150 and is repeatedly subjected to thermal contraction and thermal expansion in an ultra-low temperature environment, it is difficult to form the corner angle of the upper heat insulation panel 130. Therefore, the curved surface portion 150a is provided at the interface portion. The curved surface portion 150a and the flat surface portions 150b on both sides are separated for the sake of convenience and can be manufactured by processing one sheet of the kitchen wall 150. [ Further, the entire inner wall 150 without the flat portion 150b can be formed of the curved portion 150a.

A kitchen wall support member (not shown) may be inserted between the curved surface portion 150a and the upper heat insulation panel 130. [ The bottom side surfaces of the kitchen wall support member correspond to the boundary corner shapes of the upper heat insulating panel 130 and the upper side surfaces can correspond to the shapes of the curved surface portions 150a. The main body wall supporting member supports the lower portion of the curved surface portion 150a to prevent the curved surface portion 150a from being deformed by an external force.

The kitchen wall 150 may be mechanically coupled to the upper insulating panel 130 by a rivet 150c or the like. Although not shown in the drawings, it is also possible that the upper second reinforcing panel 132 is provided with a kitchen wall connecting member (see FIG. 6, not shown) and the kitchen wall 150 is welded to the kitchen wall connecting member . This is the same as the joining method of the flat portion main body wall 50, so a detailed description will be omitted.

On the other hand, the upper second reinforcing panel 132 may be provided with a kitchen wall receiving groove 132b which can receive the kitchen wall 150. [ Therefore, the flat portion 150b of the kitchen wall 150 may not protrude from the upper second reinforcement panel 132. In addition, both sides of the kitchen wall 150 may not extend to the edges of the upper insulating panel 130. That is, the kitchen wall 150 may be provided to be accommodated in the central portion of the upper heat insulating panel 130.

Next, a description will be given of a method of installing the three-sided corner panel unit 100 in the corner portion of the three-sided surface. The lower insulation panels of the three-sided corner panel unit 100 can be installed before the adjacent corner lower insulation panels are installed, and the upper insulation panels of the three-sided corner panel unit 100 are installed above the adjacent corner upper insulation panels Can be installed before.

The installation of the lower insulation panel 120 is performed by installing the lower first insulation panel L1 on the first plane portion P1 and installing the lower first insulation panel L1 on the second plane portion P2, The lower second heat insulating panel L2 is provided on the directional interface B12 and the lower surface of the lower first heat insulating panel L1 and the lower surface of the lower second insulating panel L2 are disposed on the third plane portion P3. And the lower third heat insulating panel L3 is installed on the 23rd direction boundary surface B23 of the heat insulating panel L2.

The installation of the upper insulation panel 130 is performed by installing the upper first insulation panel U1 on the lower first insulation panel L1 after installing the lower first through third insulation panels, The upper second heat insulating panel U2 is provided on the twelfth direction boundary surface B12 of the upper first heat insulating panel U1 and the upper second heat insulating panel U2 is provided on the lower third heat insulating panel L3, The upper third heat insulating panel U3 is provided so as to be installed on the thirteenth direction boundary surface B13 of the upper second heat insulating panel U1 and the 23rd direction boundary surface B23 of the upper second heat insulating panel U2.

The three-sided corner panel unit 100 according to the embodiment of the present invention can be manufactured by combining three pieces of the lower heat insulating panel and three pieces of the upper heat insulating panel. The pieces of the lower heat insulating panel are sequentially fixed to the outer wall, The upper insulating panel pieces can be fixed in order. The use of such small, lightweight insulation panel pieces reduces the degree of difficulty of operation.

In addition, the three-sided corner panel unit 100 according to the embodiment of the present invention may have an angle of an outer wall or an angle with an adjacent corner portion of a heat-insulating panel piece when the other one of the heat- It is easy to control the difference. That is, it is easy to insert a pad or the like capable of adjusting the level on the boundary surface of the heat insulating panel piece, or to cut the boundary surface.

Meanwhile, in the three-sided corner panel unit 100 according to the embodiment of the present invention, a chamfer may be formed at a portion where the corner unit C1, C2, and the like meet. That is, a chamfer shape may be provided on the corner of the lower heat insulating panel 120 and the corner of the upper heat insulating panel 130. This is to prevent the interference with the outer wall or other heat insulating panel at the corner or vertex when the heat insulating panels 120 and 130 are installed and to prevent the corner from being damaged when the deformation is caused by the external force.

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,
100: three-sided corner panel unit, 120: corner-portion-bottomed insulating panel,
120b: a foam plug, 121: a first reinforcing panel under the corner portion,
122: corner second lower reinforcement panel, 122a: groove,
122b: auxiliary barrier receiving groove, 123: auxiliary barrier supporting member,
125: panel fixing unit, 125a: coupling portion,
125b: projecting member, 125c: rivet,
130: Upper corner panel insulation panel, 130b: Foam flock,
131: first upper reinforcing panel at the corner portion, 132: second upper reinforcing panel at the corner portion,
132a: Kitchen wall receiving groove, 140: Corner part auxiliary wall,
143: connection auxiliary barrier, 150: corner portion kitchen wall,
151: Wrinkles.

Claims (10)

A liquefied gas holding window provided on an outer wall including a corner portion and a flat portion,
A three-sided corner panel unit provided on a three-sided corner portion where a first flat portion, a second flat portion and a third flat portion meet,
Wherein the three-sided corner panel unit comprises a lower insulating panel and an upper insulating panel laminated on the lower insulating panel,
Wherein the lower insulation panel comprises a lower first insulation panel disposed on the first plane portion, a lower second insulation panel disposed on the second plane portion, and a lower third insulation panel disposed on the third plane portion, Panel,
Wherein the upper insulation panel comprises: an upper first insulation panel disposed on the first plane portion; an upper second insulation panel disposed on the second plane portion; and an upper third insulation panel disposed on the third plane portion Panel,
And the lower first and second lower and upper heat insulating panels are coupled to each other to form a lower heat insulating panel. The method according to claim 1,
The upper first insulation panel, the upper second insulation panel, and the upper third insulation panel are joined together in separate pieces to constitute an upper insulation panel. 3. The method of claim 2,
Wherein an angle between an interface between the lower first insulation panel and the lower second insulation panel and the first plane portion is half of an angle between the first plane portion and the second plane portion. The method of claim 3,
Wherein an angle between an interface between the upper first insulation panel and the upper second insulation panel and an angle between the first plane portion and an interface between the lower first insulation panel and the lower second insulation panel is greater than an angle between the interface between the lower first insulation panel and the lower second insulation panel, A liquefied gas cargo hold provided identically. 3. The method of claim 2,
Further comprising an auxiliary barrier laminated on said lower insulating panel,
The auxiliary barrier is provided so as to bend in three directions so that the first surface is disposed on the lower first insulating panel, the second surface is disposed on the lower second insulating panel, and the third surface is positioned on the lower third insulating panel Liquefied gas hold. 6. The method according to claim 2 or 5,
Further comprising a kitchen wall laminated on said upper insulating panel,
The kitchen wall is provided so as to bend in three directions so that the first surface is arranged to be seated on the upper first heat insulating panel, the second surface to the upper second heat insulating panel, and the third surface to be seated on the upper third heat insulating panel Liquefied gas hold. 6. The method of claim 5,
And an auxiliary barrier receiving groove for receiving the auxiliary barrier is formed on the lower insulating panel. The method according to claim 6,
And a main wall receiving groove in which the main wall is received is formed on the upper heat insulating panel. A three-sided corner panel unit is provided on a three-sided corner portion where the first flat portion, the second flat portion and the third flat portion meet,
A lower first heat insulating panel is provided on the first flat surface portion and a lower second heat insulating panel is provided on the second flat surface portion so as to be disposed on the 12th direction boundary surface of the lower first heat insulating panel, And a lower third heat insulating panel is installed on the flat surface part so as to be installed on a boundary surface in the thirteenth direction of the lower first insulating panel and on a boundary surface in the 23rd direction of the lower second insulating panel. 10. The method of claim 9,
After the lower first to third insulation panels are installed,
An upper first heat insulating panel is provided on the lower first heat insulating panel and an upper second heat insulating panel is installed on the lower second heat insulating panel so as to be installed on the 12th direction boundary surface of the upper first heat insulating panel, And an upper third thermal insulation panel is installed on the lower third thermal insulation panel so as to be installed on the interface between the thirteenth directional interface of the upper first thermal insulation panel and the 23rd directional interface of the upper second thermal insulation panel.
KR1020140098762A 2014-08-01 2014-08-01 Cargo for liquefied gas and manufactuaring method thereof KR20160017220A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120013233A (en) 2011-12-16 2012-02-14 삼성중공업 주식회사 Liquefied Natural Gas storage tank and method to manufacture the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120013233A (en) 2011-12-16 2012-02-14 삼성중공업 주식회사 Liquefied Natural Gas storage tank and method to manufacture the same

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