KR20170022664A - Insulation system of membraine type storage tank and membrain type storage tank - Google Patents

Insulation system of membraine type storage tank and membrain type storage tank Download PDF

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Publication number
KR20170022664A
KR20170022664A KR1020150117942A KR20150117942A KR20170022664A KR 20170022664 A KR20170022664 A KR 20170022664A KR 1020150117942 A KR1020150117942 A KR 1020150117942A KR 20150117942 A KR20150117942 A KR 20150117942A KR 20170022664 A KR20170022664 A KR 20170022664A
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South Korea
Prior art keywords
wall
heat insulating
storage tank
primary
sealing wall
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KR1020150117942A
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Korean (ko)
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KR101751839B1 (en
Inventor
표창민
박광준
강봉호
허행성
Original Assignee
대우조선해양 주식회사
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Priority to KR1020150117942A priority Critical patent/KR101751839B1/en
Priority to PCT/KR2016/001162 priority patent/WO2017034109A1/en
Publication of KR20170022664A publication Critical patent/KR20170022664A/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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

According to the present invention, the insulation system of a membrane-type storage tank comprises: a second insulation wall which is placed to insulate the internal space of the liquefied natural gas storage tank from outside, and which is bent to be placed in a corner of the liquefied natural gas storage tank; a second sealed wall which is piled up on the second insulation wall, and which is made from stainless steel with a wrinkle unit; a first insulation wall which is piled up on the second sealed wall, and which is bent to be combined with the second insulation wall; and a first sealed wall which is piled up on the first insulation wall, and which is made from stainless steel with a wrinkle unit towards the inside of the liquefied natural gas storage tank. A first insulation wall combination means, which is placed on the second insulation wall, is inserted into a combination hole which is placed on the first insulation wall, and the first insulation wall is combined with the second insulation wall. According to the present invention, provided are a structure of an insulation system, which is proper even when the second sealed wall is made from stainless steel in the membrane-type storage tank, and a storage tank comprising the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a membrane-type storage tank,

The present invention relates to an insulation system structure of a membrane-type storage tank and a membrane-type storage tank including 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

It is an object of the present invention to provide a structure of a heat insulating system suitable for a case where a secondary sealing wall is formed of stainless steel in a membrane type storage tank and a storage tank including the same. There is a purpose.

The insulation system of the membrane type storage tank according to the present invention comprises a secondary insulation wall provided to insulate the internal space of the liquefied natural gas storage tank from the outside and bent to be provided at the corner of the liquefied natural gas storage tank, A secondary sealing wall which is laminated on the secondary insulating wall and is made of a stainless steel material having a corrugation part, a primary insulating wall which is laminated on the secondary sealing wall and is bent to be engaged with the secondary insulating wall And a primary sealing wall made of a stainless steel material laminated on the wall and the primary insulating wall and having a corrugated portion in an inward direction of the liquefied natural gas storage tank, And the coupling means is fitted in the coupling hole provided in the primary heat insulating wall so that the primary heat insulating wall is coupled to the secondary heat insulating wall.

Here, the secondary heat insulating wall may include a first sealing wall bonding layer joined along the bent edges and provided with a steel plate assembled on the plywood, a second sealing wall bonding layer bonded to the first sealing wall bonding layer, A second sealing wall bonding layer on which a metal strip is formed and the primary insulating wall bonding means is mounted on a metal strip formed on the second sealing wall bonding layer of the secondary insulating wall .

The secondary sealing wall is also welded to the metal strip of the first sealing wall bonding layer and the second sealing wall bonding layer.

The primary heat insulating wall may include a first heat insulating layer in a bent form, a wood block coupled to both flat sides of the first heat insulating layer, a steel plate laminated on the upper surface of the first heat insulating layer and the wood block, A second insulating layer bonded to the side surface, and an upper surface ply laminated on the upper surface of the second insulating layer.

A plurality of stud bolts are formed on both side portions of the steel plate, and the plurality of stud bolts are inserted into a plurality of bolt coupling holes formed in the wood block, thereby coupling the steel plate and the wood block .

In addition, a groove is formed on a lower surface of the first heat insulating layer and the wood block, one groove formed in the first heat insulating layer and one groove formed in the wood block form one coupling groove, And the first heat insulating layer and the wood block are fixedly coupled to each other.

The underfloor is bonded to the lower surfaces of the first heat insulating layer, the wood block and the second heat insulating layer.

Here, the secondary heat insulating wall coupling holes are formed through the plywood joined to the upper and lower surfaces of the second heat insulating layer and the second heat insulating layer, and the primary heat insulating wall coupling means formed on the secondary heat insulating wall is formed by the secondary And is defective in the heat insulating wall coupling hole, whereby the primary heat insulating wall and the secondary heat insulating wall are combined.

The secondary insulation 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 strip formed thereon, wherein the primary insulating wall bonding means is mounted on a metal strip formed on the second sealing wall bonding layer of the secondary insulating wall.

In addition, the membrane-type storage tank according to the present invention includes the above-described adiabatic system.

According to the adiabatic system of the membrane-type storage tank of the present invention and the membrane-type storage tank including the same, stainless steel having excellent performance even at a very low temperature is used as a secondary sealing wall, and a secondary heat- So that the primary heat insulating wall can be fixedly coupled.

By separating the steel plate from the wood layer formed with the coupling hole for coupling with the secondary heat insulating wall of the primary heat insulating wall, the influence of heat shrinkage on the steel plate can be minimized.

Further, the bonding of the heat insulating layer and the wood layer can be made simple and robust.

Further, the stud bolt formed on the steel plate is formed on the side surface, so that it is free from the influence of the movement of the corner portion in thermal deformation.

Ultimately, it is possible to manufacture an excellent thermal insulation system even by a simple process.

FIG. 1 schematically shows a part of a membrane-type storage tank according to the present invention.
FIG. 2 is a three-dimensional view showing the corner structure of the insulation system of the membrane-type storage tank according to the present invention.
3 is a view showing a secondary insulation wall constituting the insulation system of the membrane-type storage tank according to the present invention.
4 is an enlarged view of a part of a secondary insulation wall and a part of a secondary sealing wall constituting the insulation system of the membrane type storage tank according to the present invention.
FIG. 5 illustrates a primary insulation wall constituting an insulation system of a membrane-type storage tank according to the present invention.
6 is a view illustrating a process of assembling the primary insulation wall constituting the insulation system of the membrane type storage tank according to the present invention.

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 membrane-type storage tank for storing liquefied natural gas according to the present invention.

1, a membrane type 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 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 the corner portion 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 comprises a panel-shaped heat insulating wall and a membrane for sealing to form a double-layered insulation system.

FIG. 2 is a three-dimensional view showing the corner structure of the insulation system of the membrane-type storage tank according to the present invention.

2, the adiabatic system for a membrane-type storage tank according to the present invention comprises a secondary insulation wall 300 bent in a shape suitable for a corner, a secondary sealing wall 300 formed on the secondary insulation wall 300, A primary insulating wall 120 laminated on the secondary sealing wall 200 and folded in the same form as the secondary insulating wall 300 and a stainless steel material 120 laminated on the primary insulating wall 120. [ And a primary sealing wall (not shown).

The insulation system of the membrane-type storage tank according to the present invention is characterized in that not only the primary sealing wall but also the secondary sealing wall 200 are made of stainless steel so that the secondary heat insulating wall 300 and the primary heat insulating wall 120 .

The secondary insulation wall 300 is bent to fit the corner of the membrane-type storage tank. The secondary insulation wall 300 and the primary insulation wall 300 form a steel plate at the corners of the primary insulation wall 120. 120). ≪ / RTI >

As a result, the primary heat insulating wall engaging means 332 provided in the secondary heat insulating wall 300 is inserted into the engaging hole 127 provided in the primary heat insulating wall 120, so that the secondary heat insulating wall 300 and the primary heat insulating wall 120 are combined.

Hereinafter, the structure of the secondary insulation wall 300 and the primary insulation wall 120 will be described.

3 and 4, the secondary insulation wall 300 according to the present invention is formed by a heat insulation layer 310 formed of a polyurethane foam or the like so that the internal 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 secondary insulation wall 300 of the present invention is constituted so as to constitute a sealing wall formed of stainless steel (SUS) for forming a laminate on the heat insulating wall to seal the space inside the storage tank, and the sealing wall has a secondary sealing And a primary insulating wall 120 to be described later is stacked on the secondary sealing wall as a wall so as to be combined with the secondary insulating wall 300.

The secondary sealing wall 200 laminated on the secondary insulating wall 300 is welded to the metal strip 331 on the second sealing wall bonding layer 330 and the first sealing wall bonding layer 320 Respectively.

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 in the secondary heat insulating wall 300 of the present invention are spaced apart from each other such that a plurality of the wrinkles 210 are seated therebetween, 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.

On the metal strip 331 of the second sealing wall bonding layer 330, there are provided a first insulating wall 120 and a second insulating wall 300 on the second sealing wall so that the first insulating wall 120, which will be described later, A secondary insulation wall joining means 332 is mounted, and such a coupling means may be provided by an anchor or the like so that the primary heat insulation wall 120 can be fitted 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 primary insulation walls corresponding to the inside of the storage tank are stacked and can be easily joined to the secondary insulation wall. Thus, the membrane type storage tank can be constituted as such a laminated structure.

FIG. 5 is a view showing a primary insulation wall constituting an insulation system of a membrane-type storage tank according to the present invention, and FIG. 6 is a view showing an assembling process of a primary insulation wall constituting an insulation system of a membrane- FIG.

5 and 6, the primary heat insulating wall 120 according to the present invention includes a first heat insulating layer 121 provided in a bent form, a wood block (not shown) coupled to both flat sides of the first heat insulating layer 121, A first insulating layer 121 and a steel plate 123 stacked on the upper surface of the wood block 122; a second insulating layer 124 coupled to a side surface of the wood block 122; And an under surface plywood 126 bonded to the lower surfaces of the first insulating layer 121, the wood block 122 and the second insulating layer 124. The upper insulating layer 125 is formed on the upper insulating layer 121,

First, the steel plate 123 is bent to fit the corner portion of the membrane-type storage tank of the present invention, and a plurality of stud bolts 123-1 are formed on the lower surface of the steel plate 123.

A plurality of bolt coupling holes 122-1 are formed in the wood block 122 to be coupled to the lower surface of the steel plate 123 so as to correspond to the stud bolts 123-1, 122 are combined.

The wood block 122 is coupled to both sides of the steel plate 123 and the first heat insulating layer 121 is coupled between the wood blocks 122.

The first heat insulating layer 121 is hard to be bonded to the steel plate 123 and is fixedly coupled to the wood block 122 instead.

For this purpose, grooves are formed on the lower surfaces of the first insulating layer 121 and the wood block 122, and these grooves face each other to form one coupling groove 127.

The first heat insulating layer 121 and the wood block 122 are joined by inserting the block-shaped engaging key 128 into the engaging groove 127.

The coupling key 128 may be a wood material and the coupling key 128 may be fitted or fixed by screws so that the first insulating layer 121 and the wood block 122 are combined.

A lower plywood 126 is bonded to the lower surfaces of the first insulating layer 121 and the wood block 122 bonded to each other. The second insulating layer 124 is bonded to the side surface of the wood block 122 on the lower plywood 126 and the upper surface plywood 125 is laminated on the upper surface of the second heat insulating layer 124.

Then, the primary sealing wall 110 is joined to the primary heat insulating wall 120 by welding.

As described above, according to the present invention, the heat insulating layer of the entire corner portion is not formed of steel, but is separated from the steel so as to form a plywood on the upper surface of the steel, thereby facilitating the process and reducing the material cost.

The connection of the primary heat insulating wall with the secondary heat insulating wall is made through a layer in which the plywood is formed on the upper face and corresponds to the position of the primary heat insulating wall coupling means of the secondary heat insulating wall .

That is, the secondary heat insulating wall engaging hole 129 is formed through the second insulating layer 124, the upper face ply 125, and the lower ground fillet 126, and the secondary heat insulating wall engaging hole 129, The primary heat insulating wall 120 and the secondary heat insulating wall 300 are connected to each other by the primary heat insulating wall engaging means 332 of the secondary heat insulating wall 300 to constitute the secondary sealing wall 200 of stainless steel It is possible to easily and efficiently perform physical coupling.

Although the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

110: primary sealing wall
120: Primary insulation wall
121: first insulating layer
122: Wood block
122-1: Bolt coupling hole
123: Steel sheet
123-1: Stud bolt
124: Second insulating layer
125: Top surface plywood
126: When ply wood
127: engaging groove
128: Join key
129: Secondary insulation wall coupling hole
200: Secondary sealing wall
210:
300: Secondary insulation wall
320: first sealing wall bonding layer
330: second sealing wall bonding layer
331: Metal strip
332: primary insulation wall coupling means

Claims (10)

A secondary insulation wall provided to insulate an internal space of the liquefied natural gas storage tank from the outside and bent so as to be provided at a corner of the liquefied natural gas storage tank;
A secondary sealing wall laminated on the secondary insulating wall and made of a stainless steel material having a corrugation;
A primary insulating wall which is stacked on the secondary sealing wall and is bent to be engaged with the secondary insulating wall; And
A primary sealing wall of a stainless steel material laminated on the primary insulating wall and having a corrugation in an inward direction of the liquefied natural gas storage tank,
Characterized in that the primary heat insulating wall is engaged with the secondary heat insulating wall by fitting the primary heat insulating wall engaging means provided on the secondary heat insulating wall into the engaging hole provided in the primary heat insulating wall,
Insulation system of membrane type storage tank. The method according to claim 1,
The secondary heat insulating wall is provided with:
A first sealing wall bonding layer joined along a bent edge and provided with a steel plate assembled on a plywood,
And a second sealing wall bonding layer bonded to the first sealing wall bonding layer and separated from the first sealing wall bonding layer and having a metal strip formed on the plywood,
Characterized in that said primary insulating wall engaging means is mounted on a metal strip formed on the secondary sealing wall bonding layer of said secondary insulating wall,
Insulation system of membrane type storage tank. The method according to claim 1,
Characterized in that the secondary sealing wall is welded to the metal strips of the first sealing wall bonding layer and the second sealing wall bonding layer.
Insulation system of membrane type storage tank. The method according to claim 1,
The primary heat-insulating wall is provided with:
A first insulating layer in a bent form;
A wood block coupled to both flat sides of the first insulating layer;
A steel plate laminated on an upper surface of the first insulating layer and the wood block;
A second heat insulating layer coupled to a side surface of the wood block; And
And an upper surface plywood laminated on the upper surface of the second insulating layer.
Insulation system of membrane type storage tank. The method of claim 4,
A plurality of stud bolts are formed on both sides of the steel sheet,
Characterized in that the plurality of stud bolts are fitted in a plurality of bolt coupling holes formed in the wood block so that the steel plate and the wood block are engaged.
Insulation system of membrane type storage tank. The method of claim 4,
Wherein a groove is formed on a lower surface of the first insulating layer and the wood block, one groove formed on the first heat insulating layer and one groove formed on the wood block form one coupling groove,
Characterized in that the first heat insulating layer and the wood block are fixedly coupled by inserting a block-shaped coupling key into the coupling groove,
Insulation system of membrane type storage tank. The method of claim 4,
Characterized in that a lower plywood is bonded to lower surfaces of the first heat insulating layer, the wood block and the second heat insulating layer.
Insulation system of membrane type storage tank. The method of claim 7,
A secondary heat insulating wall coupling hole is formed through the plywood joined to the upper and lower surfaces of the second heat insulating layer and the second heat insulating layer,
Characterized in that the primary heat insulating wall and the secondary heat insulating wall are joined by the primary heat insulating wall engaging means formed on the secondary heat insulating wall being defective in the secondary heat insulating wall engaging hole,
Insulation system of membrane type storage tank. The method of claim 8,
The secondary heat insulating wall is provided with:
A first sealing wall bonding layer joined along a bent edge and provided with a steel plate assembled on a plywood,
And a second sealing wall bonding layer bonded to the first sealing wall bonding layer and separated from the first sealing wall bonding layer and having a metal strip formed on the plywood,
Characterized in that the primary insulating wall engaging means is mounted on a metal strip formed on a second sealing wall bonding layer of the secondary insulating wall.
Insulation system of membrane type storage tank. A membrane-type storage tank comprising an adiabatic system according to any one of claims 1 to 9.
KR1020150117942A 2015-08-21 2015-08-21 Insulation system of membraine type storage tank and membrain type storage tank KR101751839B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020138846A1 (en) * 2018-12-27 2020-07-02 대우조선해양 주식회사 Heat insulation structure for corner parts of liquefied natural gas storage tank
CN113494677A (en) * 2020-03-18 2021-10-12 大宇造船海洋株式会社 Heat insulation structure of liquefied natural gas storage tank

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3073272B1 (en) * 2017-11-06 2019-11-01 Gaztransport Et Technigaz SEALED AND THERMALLY INSULATED TANK

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120131902A (en) 2011-05-27 2012-12-05 삼성중공업 주식회사 Insulation structure of cargo tank for lng

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100667500B1 (en) * 2005-04-15 2007-01-10 한국가스공사 Lng storage tank and modules for constructing it
KR101215629B1 (en) * 2008-06-20 2012-12-26 삼성중공업 주식회사 Insulation panel for corner area of lng cargo containment system
KR101168949B1 (en) * 2010-06-01 2012-08-02 한국과학기술원 Heat insulation structure and cryogenic liquid storage tank having the same
KR20120013246A (en) * 2011-12-16 2012-02-14 삼성중공업 주식회사 Liquefied natural gas storage tank
KR101707499B1 (en) * 2013-09-06 2017-02-16 대우조선해양 주식회사 Insulation Structure For LNG Cargo Tank And Method For Connecting The Same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120131902A (en) 2011-05-27 2012-12-05 삼성중공업 주식회사 Insulation structure of cargo tank for lng

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020138846A1 (en) * 2018-12-27 2020-07-02 대우조선해양 주식회사 Heat insulation structure for corner parts of liquefied natural gas storage tank
CN113226914A (en) * 2018-12-27 2021-08-06 大宇造船海洋株式会社 Thermal insulation structure for corner portion of liquefied natural gas storage tank
JP2022512213A (en) * 2018-12-27 2022-02-02 デウ シップビルディング アンド マリン エンジニアリング カンパニー リミテッド Insulation structure at the corners of the liquefied natural gas storage tank
US12007073B2 (en) 2018-12-27 2024-06-11 Hanwha Ocean Co., Ltd. Heat insulation structure for corner parts of liquefied natural gas storage tank
CN113494677A (en) * 2020-03-18 2021-10-12 大宇造船海洋株式会社 Heat insulation structure of liquefied natural gas storage tank

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