KR20170022665A - Corner insulation wall of membraine type storage tank, membrain type storage tank comprising the same and insulation system of lng storage tank - Google Patents

Corner insulation wall of membraine type storage tank, membrain type storage tank comprising the same and insulation system of lng storage tank Download PDF

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Publication number
KR20170022665A
KR20170022665A KR1020150117943A KR20150117943A KR20170022665A KR 20170022665 A KR20170022665 A KR 20170022665A KR 1020150117943 A KR1020150117943 A KR 1020150117943A KR 20150117943 A KR20150117943 A KR 20150117943A KR 20170022665 A KR20170022665 A KR 20170022665A
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South Korea
Prior art keywords
sealing wall
storage tank
bonding layer
wall
corner
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KR1020150117943A
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Korean (ko)
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KR101751840B1 (en
Inventor
표창민
박광준
허행성
신정섭
Original Assignee
대우조선해양 주식회사
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Priority to KR1020150117943A priority Critical patent/KR101751840B1/en
Priority to PCT/KR2016/000991 priority patent/WO2017034107A1/en
Publication of KR20170022665A publication Critical patent/KR20170022665A/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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • 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
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0304—Thermal insulations by solid means
    • F17C2203/0358—Thermal insulations by solid means in form of panels
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0631—Three or more walls
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

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

Abstract

The insulating wall of the corner portion of the membrane-type storage tank according to the present invention comprises a heat insulating layer having a shape bent to be provided at the corner of the liquefied natural gas storage tank and insulates the internal space of the liquefied natural gas storage tank from the outside, And the second sealing wall bonding layer separated from the first sealing wall bonding layer and coupled to the heat insulating layer. According to the present invention, therefore, the secondary sealing wall is made of stainless steel A membrane-type storage tank which is formed of steel and can cope with thermal deformation and is configured to be easily coupled to the heat insulating wall can be realized.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulation system for a corner-portion insulating wall of a membrane-type storage tank, a membrane-type storage tank including the same, and a liquefied natural gas storage tank. 2. Description of the Prior Art [0002] }

The present invention relates to a membrane type storage tank and a structure of a corner portion insulating wall which is a constitution of the same.

Natural gas is a fossil fuel containing methane as a main component and a small amount of ethane, propane, and the like, and has recently been regarded as a low-pollution energy source in various technical fields.

Natural gas is transported in a gaseous state through land or sea gas pipelines, or is transported to a remote location where it is stored in an LNG carrier in the form of liquefied natural gas (LNG). Liquefied natural gas is obtained by cooling natural gas at a cryogenic temperature (below about -163 ° C) and its volume is reduced to about 1/600 of that of natural gas, making it well suited for long distance transport through the sea.

Liquefied natural gas carriers are equipped with cargo tanks (also called cargo tanks) that can store and store liquefied natural gas that has been liquefied by cooling natural gas. Since the boiling point of liquefied natural gas is about -162 ° C at atmospheric pressure, the storage tank for liquefied natural gas is a material that can withstand extremely low temperatures such as aluminum, stainless steel and 35% nickel steel to safely store and store liquefied natural gas. And is designed to have a structure resistant to thermal stress and heat shrinkage and to prevent heat penetration.

LNG RV (Regasification Vessel), which transports LNG carrier and LNG for loading and unloading LNG to land demand by loading LNG and landing in natural gas, Floating marine structures such as LNG FPSO (Floating, Production, Storage and Offloading) and LNG FSRU (FSRU) also include storage tanks installed in LNG carriers or LNG RVs.

LNG FPSO is a floating marine structure that is used to liquefy natural gas produced directly from the sea and store it in a storage tank and, if necessary, to transfer the LNG stored in this storage tank to an LNG carrier. In addition, the LNG FSRU is a floating type of floating structure that stores LNG unloaded from LNG carriers in offshore sea, stores it in a storage tank, vaporizes LNG if necessary, and supplies the LNG to the customer.

In this way, a storage tank for storing LNG in a cryogenic condition is installed in a marine structure such as an LNG carrier, LNG RV, LNG FPSO, and LNG FSRU that transports or stores a liquid cargo such as LNG.

Such a storage tank can be classified into an independent tank type and a membrane type depending on whether the load of the cargo directly acts on the heat insulating material. Membrane-type storage tanks are divided into GTT NO 96 type and TGZ Mark III type. Independent tank type storage tanks are divided into MOSS type and IHI-SPB type.

The TGZ Mark III type storage tank, which is a type of conventional liquefied natural gas storage tank, is a structure in which a primary sealing wall, a primary insulating wall, a secondary sealing wall and a secondary insulating wall are laminated. The primary sealing wall is made of a stainless steel membrane (membrane) 1.2 mm thick as a part directly contacting the liquefied natural gas stored in the storage tank.

Since stainless steel is excellent in sealing ability, it is suitable as a sealing wall. However, since the thermal deformation is large, the primary sealing wall is formed by forming a plurality of wrinkles in consideration of thermal deformation.

However, unlike the primary sealing wall, the secondary sealing wall has a structure in which a primary insulating wall is laminated on the upper part of the sealing wall and a secondary insulating wall is laminated on the lower part of the sealing wall, that is, a structure in which the secondary sealing wall is interposed Therefore, there is a problem that the primary heat-insulating wall and the secondary heat-insulating wall must be able to be coupled despite the arrangement of the secondary sealing wall. If the secondary sealing wall is made of stainless steel, the heat- And such difficulties are more urgent, especially at the corner of the membrane structure of the storage tank.

Therefore, it has been difficult to use stainless steel as a secondary sealing wall in the past, and when it is used, the corner portion is formed in a tube shape instead of a panel shape.

Korean Patent Laid-Open No. 10-2012-0131902

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a membrane type storage tank in which a secondary sealing wall is formed of stainless steel and is adapted to cope with thermal deformation, It is an object of the present invention to provide an insulation system for a corner-portion insulating wall of a membrane-type storage tank, a membrane-type storage tank including the same, and a liquefied natural gas storage tank.

The insulating wall of the corner portion of the membrane-type storage tank according to the present invention comprises a heat insulating layer having a shape bent to be provided at the corner of the liquefied natural gas storage tank and insulates the internal space of the liquefied natural gas storage tank from the outside, And a second sealing wall bonding layer separated from the first sealing wall bonding layer and bonded onto the heat insulating layer.

The first sealing wall bonding layer is characterized in that a steel plate is assembled on a plywood.

In addition, the first sealing wall bonding layer is formed by dividing a plurality of portions along the bent edges of the heat insulating layer.

The second sealing wall bonding layer is formed of plywood and is formed by dividing a plurality of the sealing walls in the longitudinal direction.

Here, a steel strip for joining a sealing wall of a stainless steel material is formed on the second sealing wall bonding layer.

It is further characterized in that on the metal strip, a first corner insulating wall engaging means is mounted so that the first corner insulating wall can be laminated and bonded.

The membrane-type storage tank according to the present invention comprises a heat insulating layer having a shape that is formed to be at the corner of the liquefied natural gas storage tank and which insulates the internal space of the liquefied natural gas storage tank from the outside, a bent edge of the heat insulating layer A first sealing wall bonding layer joined to the first sealing wall bonding layer and provided with a steel plate assembled on a plywood, and a second sealing wall bonding layer separated from the first sealing wall bonding layer and bonded on the heat insulating layer, and a sealing wall of a stainless steel material welded to a metal strip of the first sealing wall bonding layer and the second sealing wall bonding layer, and a corner portion insulating wall including a second sealing wall bonding layer having a steel strip formed thereon.

The first corner portion insulating wall engaging means is mounted on the metal strip formed on the second sealing wall engaging layer of the corner portion insulating wall. By engagement with the first corner insulating wall engaging means, And a first corner portion insulating wall laminated on the first corner portion.

In addition, the first sealing wall bonding layer of the corner portion insulating wall is formed by dividing a plurality of portions along the bent edges of the heat insulating layer.

Alternatively, the second sealing wall bonding layer of the corner portion insulating wall is divided into a plurality of portions along the longitudinal direction of the corner insulating wall.

The sealing wall may be provided with a wrinkle portion corresponding to thermal deformation. The wrinkle portion may be formed by a gap formed by dividing the first sealing wall bonding layer or a gap formed by dividing the second sealing wall bonding layer, And is seated in a gap formed between the sealing wall bonding layer and the second sealing wall bonding layer.

According to another aspect of the present invention, there is provided an insulation system for a liquefied natural gas storage tank, the insulation system being provided to insulate the internal space of the liquefied natural gas storage tank from the outside, A second sealing wall stacked on the second insulating wall and provided with a corrugated stainless steel material, a second sealing wall stacked on the second sealing wall, and bent to be engaged with the second insulating wall, And a first sealing wall made of stainless steel laminated on the first insulating wall and having a corrugation in an inward direction of the liquefied natural gas storage tank.

Here, the second adiabatic wall may include a first sealing wall bonding layer joined along a bent edge and provided with a steel plate assembled on a plywood, a second sealing wall bonding layer bonded apart from the first sealing wall bonding layer, And a second sealing wall bonding layer having a metal strip formed thereon, and the second sealing wall is welded to the metal strip of the first sealing wall bonding layer and the second sealing wall bonding layer.

The first heat insulating wall is mounted on the metal strip formed on the second sealing wall bonding layer of the second heat insulating wall, To be connected to the wall.

According to the adiabatic wall of the corner portion of the membrane-type storage tank of the present invention, the membrane type storage tank and the liquefied natural gas storage tank including the same, the stainless steel having excellent performance even at a very low temperature can be used as the secondary sealing wall, The wrinkle structure formed on the sealing wall can sufficiently cope with thermal deformation.

The first sealing wall bonding layer and the second sealing wall bonding layer are separately formed on the corner portion insulating wall and only the first sealing wall bonding layer formed on the inner edge of the corner heat insulating wall is made of steel, Even if the car sealing wall is bonded onto the first sealing wall bonding layer and the second sealing wall bonding layer of the corner portion insulating wall, physical bonding can be achieved without bonding with the corner portion of the first heat insulating wall provided above the secondary sealing wall Do.

The first sealing wall bonding layer and the second sealing wall bonding layer are divided into a plurality of portions corresponding to the corrugations of the secondary sealing wall formed in a wrinkled shape, and the first sealing wall bonding layer and the second sealing wall By forming a gap between the bonding layers, the secondary sealing wall can be formed of stainless steel.

Thus, it is possible to form the secondary sealing wall by stainless steel, and it is possible to greatly reduce the material ratio as compared with the case of implementing the secondary sealing wall by Invar steel.

On the other hand, since the secondary sealing wall is made of stainless steel, the corners can be manufactured in a panel form instead of a tube, so that the workability is easy.

Further, by constructing only the second sealing wall bonding layer with a steel material, it is economical compared with the case where the first sealing wall bonding layer is made of steel.

1 shows a structure of a membrane-type storage tank according to the present invention.
2 is a side view showing a corner insulating wall of a membrane type storage tank according to the present invention.
FIG. 3 is a view showing a connection relationship of a part of a corner insulating wall of a membrane-type storage tank according to the present invention.
FIG. 4 is a view showing the relationship between the corner insulating wall and the secondary sealing wall of the membrane-type storage tank according to the present invention.
FIG. 5 is a cross-sectional side view of a membrane-type storage tank according to the present invention and a portion of a heat-insulating wall of a membrane-type storage tank including the same.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the constituents of the drawings, it is to be noted that the same constituents are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

First, a liquefied natural gas storage tank according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 schematically shows a part of a liquefied natural gas storage tank according to the present invention.

1, a liquefied natural gas storage tank according to an embodiment of the present invention includes a primary sealing wall 110, a primary insulating wall 120, a secondary sealing wall 200, and a secondary insulating wall (not shown) 300).

The primary sealing wall 110 is installed on the primary heat insulating wall 120 to liquid-tighten the liquefied natural gas (LNG) stored in the storage tank while contacting the liquefied natural gas.

The secondary sealing wall 200 is provided between the primary heat insulating wall 120 and the secondary heat insulating wall 300 and serves to liquid-tighten the liquefied natural gas when the primary sealing wall 110 leaks.

The primary sealing wall 110 is provided with a plurality of corrugated portions for preventing shrinkage due to temperature changes and breakage during stretching. The corrugated portion is elongated or contracted due to the temperature change of the liquefied natural gas according to the line load, thereby preventing breakage due to thermal deformation applied to the primary sealing wall 110.

The primary sealing wall 110 may be made of stainless steel.

The present invention relates to a corner insulating wall of a liquefied natural gas storage tank of such a structure.

The corner portion of the membrane type storage tank according to the present invention has a structure in which a panel-shaped heat insulating wall and a membrane for sealing are stacked.

2 and 3, the corner insulating wall 300 according to the present invention is formed by a heat insulating layer 310 formed of polyurethane foam or the like so that the inner space of the liquefied natural gas storage tank is thermally isolated from the outside do.

The heat insulating layer 310 corresponding to the corner portion has a shape bent to fit the corner portion, and an angle of about 90 degrees can be formed.

The sealing wall bonding layers 320 and 330 are assembled on the insulating layer 310 and the sealing walls are laminated on the sealing wall bonding layers 320 and 330 as a membrane.

The sealing wall bonding layer in the present invention is divided into a first sealing wall bonding layer 320 and a second sealing wall bonding layer 330 which are assembled along the bent edges of the heat insulating layer 310.

The first sealing wall bonding layer 320 formed at the corner is formed by screwing the steel plate 321 to the plywood 322 and the first sealing wall bonding layer 320 is formed by bending the insulating layer 310 And a plurality of first sealing wall bonding layers 320 are bonded and bonded to each other as shown in FIG.

The second sealing wall bonding layer 330 is provided in a plywood form and is assembled on a flat surface rather than a corner of the heat insulating layer 310 and is arranged apart from the first sealing wall bonding layer 320, (Not shown) are arranged along the longitudinal direction of the optical fiber.

A metal strip 331 is formed on the second sealing wall bonding layer 330 in a predetermined pattern.

The corner portion insulating wall 300 of the present invention is constituted so as to constitute a sealing wall formed of stainless steel (SUS) for forming a laminated layer on the heat insulating wall to seal the space inside the storage tank, and the sealing wall has a second sealing And another first heat insulating wall is stacked on the second sealing wall as a wall so as to be combined with the corner insulating wall 300. [

4, the second sealing wall 200 laminated on the corner-portion insulating wall 300 has the metal strip 331 on the second sealing wall bonding layer 330 and the first sealing wall bonding layer 320).

The metal strips 331 are formed in a lattice shape so as to be suitable for stacking the second sealing wall bonding layer 330.

The second sealing wall 200, which is made of stainless steel, is formed with a plurality of wrinkles 210 in order to prevent shrinkage due to temperature change and damage during stretching.

The first sealing wall bonding layer 320 and the second sealing wall bonding layer 330 are spaced apart from each other in the corner insulating wall 300 of the present invention so that the plurality of wrinkles 210 can be seated, And the first sealing wall bonding layer 320 and the second sealing wall bonding layer 330 are each formed by dividing a plurality of portions so that a gap is formed between the first sealing wall bonding layer 320 and the second seal wall bonding layer 330.

The wrinkle portion 210 of the second sealing wall 200 can be seated in the gap formed thereby.

In addition, on the metal strip 331 of the second sealing wall bonding layer 330, another first heat insulating wall is laminated on the second sealing wall to be combined with the corner insulating wall 300, An insulating wall engaging means 332 is mounted, and such engaging means can be provided by an anchor or the like, and can be formed by inserting the first corner insulating wall or the like.

As described above, the insulating wall of the corner portion of the membrane-type storage tank according to the present invention is formed of stainless steel and has a structure in which the sealing wall having the pleats can be welded, and the sealing wall is made of stainless steel, And the first corner portion insulating wall corresponding to the inner side of the storage tank is stacked and can be easily coupled to the second corner portion insulating wall. Thus, the membrane type storage tank can be constructed as such a laminated structure.

5, the corner insulating wall 300 of the present invention is configured to be assembled with a neighboring flat insulating wall 300-1. On the flat insulating wall 300-1, a sealing wall made of stainless steel The membrane type storage tank of the present invention is constituted as a structure which is formed continuously with the sealing wall welded to the corner portion insulating wall 300 by being welded between the metal strips.

As described above, the membrane-type storage tank according to the present invention and the corner insulating wall of the membrane storage tank constituting the same have been described with reference to the drawings, but the present invention is not limited to the embodiments and drawings described above It will be understood by those skilled in the art that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

110: primary sealing wall
120: Primary insulation wall
200: Secondary sealing wall
210:
300: Secondary insulation wall
310: insulating layer
320: first sealing wall bonding layer
321: Plywood
322: Steel sheet
330: second sealing wall bonding layer
331: Metal strip
332: first corner portion insulating wall engaging means

Claims (14)

A heat insulating layer having an inner space of the liquefied natural gas storage tank to be insulated from the outside and bent to be provided at a corner of the liquefied natural gas storage tank;
A first sealing wall bonding layer joined along the bent edge of the heat insulating layer; And
And a second sealing wall bonding layer which is separated from the first sealing wall bonding layer and is bonded onto the heat insulating layer.
Insulated walls at the corner of a membrane - type storage tank. The method according to claim 1,
Characterized in that the first sealing wall bonding layer is provided with a steel plate assembled on a plywood.
Insulated walls at the corner of a membrane - type storage tank. The method of claim 2,
Wherein the first sealing wall bonding layer is formed by dividing a plurality of portions along the bent edges of the heat insulating layer.
Insulated walls at the corner of a membrane - type storage tank. The method according to claim 1,
Wherein the second sealing wall bonding layer is formed of plywood and is divided into a plurality of portions along the longitudinal direction.
Insulated walls at the corner of a membrane - type storage tank. The method of claim 4,
Characterized in that a steel strip is formed on the second sealing wall bonding layer for bonding the sealing wall of stainless steel.
Insulated walls at the corner of a membrane - type storage tank. The method of claim 5,
And a first corner insulating wall engaging means is mounted on the metal strip so that the first corner insulating wall can be stacked and joined.
Insulated walls at the corner of a membrane - type storage tank. A heat insulating layer having an inner space of the liquefied natural gas storage tank and being bent at a corner of the liquefied natural gas storage tank to insulate the inner space of the liquefied natural gas storage tank from the outside and being joined along the bent edges of the heat insulating layer, And a second sealing wall bonding layer which is bonded to the heat insulating layer and separated from the first sealing wall bonding layer and has a steel strip formed on the plywood, A corner portion insulating wall comprising; And
And a sealing wall of a stainless steel material welded to the metal strip of the first sealing wall bonding layer and the second sealing wall bonding layer.
Membrane storage tank. The method of claim 7,
A first corner portion insulating wall engaging means is mounted on a metal strip formed on the second sealing wall engaging layer of the corner portion insulating wall,
Further comprising a first corner portion insulating wall which is stacked on the corner portion insulating wall by engagement with the first corner insulating wall fitting means.
Membrane storage tank. The method of claim 7,
Wherein the first sealing wall bonding layer of the corner portion insulating wall is formed by dividing a plurality of portions along the bent edges of the heat insulating layer.
Membrane storage tank. The method of claim 7,
And the second sealing wall bonding layer of the corner portion insulating wall is formed by dividing a plurality of portions along the longitudinal direction of the corner insulating wall.
Membrane storage tank. The method according to any one of claims 8 to 10,
Wherein the sealing wall is provided with a wrinkle portion corresponding to thermal deformation,
The wrinkle portion may be formed in a gap formed by dividing the first sealing wall bonding layer or a gap formed by dividing the second sealing wall bonding layer or a gap formed between the first sealing wall bonding layer and the second sealing wall bonding layer Characterized in that the < RTI ID = 0.0 >
Membrane storage tank. A second heat insulating wall provided to insulate the internal space of the liquefied natural gas storage tank from the outside and bent to be provided at a corner of the liquefied natural gas storage tank;
A second sealing wall laminated on the second adiabatic wall, the second sealing wall being made of a stainless steel material having a corrugated portion;
A first heat insulating wall laminated on the second sealing wall and bent to be engaged with the second heat insulating wall; And
A first sealing wall of a stainless steel material laminated on the first insulating wall and having a corrugation in an inward direction of the liquefied natural gas storage tank,
Insulation system for liquefied natural gas storage tanks. The method of claim 12,
The second heat insulating wall comprises a first sealing wall bonding layer joined along a bent edge and provided with a steel plate assembled on a plywood, a second sealing wall bonding layer bonded apart from the first sealing wall bonding layer, And a second sealing wall bonding layer formed on the second sealing wall bonding layer,
And the second sealing wall is welded to the metal strip of the first sealing wall bonding layer and the second sealing wall bonding layer.
Insulation system for liquefied natural gas storage tanks. 14. The method of claim 13,
A first heat insulating wall engaging means is mounted on a metal strip formed on the second sealing wall bonding layer of the second heat insulating wall,
Characterized in that said first heat insulating wall is joined to said second heat insulating wall by said first heat insulating wall engaging means.
Insulation system for liquefied natural gas storage tanks.
KR1020150117943A 2015-08-21 2015-08-21 Corner insulation wall of membraine type storage tank, membrain type storage tank comprising the same and insulation system of lng storage tank KR101751840B1 (en)

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KR1020150117943A KR101751840B1 (en) 2015-08-21 2015-08-21 Corner insulation wall of membraine type storage tank, membrain type storage tank comprising the same and insulation system of lng storage tank
PCT/KR2016/000991 WO2017034107A1 (en) 2015-08-21 2016-01-29 Corner insulating wall for membrane-type storage tank, membrane-type storage tank comprising same, and insulation system for liquefied natural gas storage tank

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KR1020150117943A KR101751840B1 (en) 2015-08-21 2015-08-21 Corner insulation wall of membraine type storage tank, membrain type storage tank comprising the same and insulation system of lng storage tank

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KR101751840B1 KR101751840B1 (en) 2017-06-28

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KR20190129982A (en) 2017-04-04 2019-11-20 캐논 가부시끼가이샤 Electronic device and its control method

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KR20120131902A (en) 2011-05-27 2012-12-05 삼성중공업 주식회사 Insulation structure of cargo tank for lng

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