CN106536383A - Heat insulation container - Google Patents
Heat insulation container Download PDFInfo
- Publication number
- CN106536383A CN106536383A CN201580038380.0A CN201580038380A CN106536383A CN 106536383 A CN106536383 A CN 106536383A CN 201580038380 A CN201580038380 A CN 201580038380A CN 106536383 A CN106536383 A CN 106536383A
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- China
- Prior art keywords
- heat insulation
- layer
- insulation material
- vacuum heat
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
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- 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
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermal Insulation (AREA)
- Packages (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Provided is a heat insulation container for holding a substance at a temperature that is at least 100 DEG C below normal temperature, wherein the heat insulation container is provided with a container casing and a primary heat insulation layer that is arranged outside of the container casing and installed on at least the container casing side. The container is further provided with: a vacuum insulation material (8) installed outward from the primary heat insulation layer, the vacuum insulation material (8) having a breathable core material (14) and an outer sheath material (15) for vacuum-sealing the core material (14); and a thermal stress dispersion layer (21) arranged between the vacuum insulation material (8) and the primary heat insulation layer. This configuration makes it possible to minimize decline in the heat insulation capability of the outer sheath material (15) of the vacuum insulation material (8) resulting from thermal shrinkage cracking, and hence to ensure high heat insulation capability over an extended period of time.
Description
Technical field
The present invention relates to preserve the heat-insulated containers such as the cryogenic tanks of ultralow temperature material such as LNG (liquefied natural gas).
Background technology
Generally, for the cryogenic tank of storage liquefied natural gas (LNG) etc., in order to reduce in transport and storage
Evaporation loss, have begun to using vacuum heat insulation material strengthen heat-proof quality (for example, referring to patent document 1).
Figure 10 is the figure of the heat insulation structural for representing the existing cryogenic tank shown in patent document 1.
As shown in Figure 10, the heat insulation structural of cryogenic tank includes：Tank wall 101, and it is configured at thousands of on the outside of tank wall 101
Block thermal insulation board 102.Thermal insulation board 102 includes：The inner plating 103 being made up of phenol formaldehyde foam；With using hard polyurethane foams 104b
It is outer around parcel vacuum heat insulation material 104a (mineral wool as core is vacuum-packed into multi-layer laminated films)
Laminate 104.Additionally include：In the outside of 102 mutual joint 106 of thermal insulation board, configured in the way of covering it add every
Hot plate 105.Additional thermal insulation board 105 is identical with lamina rara externa 104, wraps up vacuum heat insulation material 105a with hard polyurethane foams 105b
Around and constitute.
According to this structure, except inner plating 103, and the hard polyurethane foams 104b of lamina rara externa 104 in addition to, be alternately arranged
Vacuum heat insulation material 104a, 105a also stop from the inwall side of tank and flow to the hot-fluid of outer wall.It is low therefore, it is possible to significantly improve
The heat-proof quality of warm tank.
But, in this existing structure, heat-proof quality is improved really, but because vacuum heat insulation material 104a,
The difference of 105a, the linear expansion coefficient of hard polyurethane foams 104b, 105b, during Long-Time Service, as vacuum heat-insulation
The multi-layer laminated films of the overcoating part of material 104a, 105a bear the thermal contraction with hard polyurethane foams 104b, 105b and
The thermal shrinkage stress of generation, it is possible to cracking occur.Accordingly, it is difficult to ensure that vacuum heat insulation material 104a, 105a are had for a long time
Heat-proof quality.
That is, in the structure described in patent document 1, for example, the vacuum heat insulation material 104a of lamina rara externa 104 is gathered with hard
Foam 104b is integrally formed for urethane.Therefore, because of the thermal contraction of hard polyurethane foams 104b, the multilayer of vacuum heat insulation material 104a
Laminated film is pulled flexible.Multi-layer laminated films are pulled repeatedly to be stretched, and produces cracking, because of the cracking, vacuum heat insulation material
The heat-proof quality of 104a is possible to decline.
And, the ultralow temperature of the material such as such as LNG passes through the part of the phenol formaldehyde foam and joint 106 for constituting inner plating 103
Conduction, makes the overcoating part of vacuum heat insulation material 104a become ultralow temperature.As a result, constituting the multi-layer laminated films tool of overcoating part
There is the trend of low temperature brittleness.Therefore, the caused cracking because of thermal contraction, use time are more long, are more susceptible to, and this becomes one
Individual big problem.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2010-249174 publications
The content of the invention
The present invention is exactly in view of above-mentioned this point, its object is to provide a kind of heat-insulated container, be prevented from vacuum heat-insulation
The thermal contraction difference of the overcoating part of material causes to produce cracking so as to cause heat-proof quality to decline, and can ensure high thermal insulation for a long time
Energy.
The heat-insulated container of the present invention is the heat-insulated container of the material for more than 100 DEG C lower than normal temperature of keeping temperature, and which wraps
Include：Container casing；With the outside for being configured at container casing, and a thermal insulation layer of container casing side is at least configured at.And,
Also include：The position of portion side more outer than thermal insulation layer is configured at, and including the core with gas permeability and vacuum sealing core
The vacuum heat insulation material of the overcoating part of material；And the thermal stress dispersion layer being configured between vacuum heat insulation material and a thermal insulation layer.
Thus, even if thermal contraction is poor existing between thermal insulation layer and vacuum heat insulation material at one time, the heat of a thermal insulation layer
Convergent force puts on the overcoating part of vacuum heat insulation material, and the thermal shrinkage force is also disperseed by thermal stress dispersion layer, can suppress vacuum
The overcoating part of heat-barrier material causes to produce cracking etc. because of thermal contraction difference.Thus, vacuum heat insulation material is able to maintain that original high
Heat-proof quality, can ensure the heat-proof quality of heat-insulated container for a long time well.
In accordance with the invention it is possible to suppress the overcoating part of vacuum heat insulation material because thermal contraction is cracked under caused heat-proof quality
Drop, it is possible to ensure high heat-proof quality for a long time.
Description of the drawings
Fig. 1 is the sectional view of the heat-insulated container of first embodiment of the present invention.
Fig. 2 is the amplification sectional view of the heat insulating structure body of the heat-insulated container for representing first embodiment of the present invention.
Fig. 3 is the vacuum heat insulation material used in the heat insulating structure body of the heat-insulated container of first embodiment of the present invention
Sectional view.
Fig. 4 is the vacuum heat insulation material used in the heat insulating structure body of the heat-insulated container of first embodiment of the present invention
Plan.
Fig. 5 is the explanatory diagram of the thermal simulation result of the heat-insulated container for representing first embodiment of the present invention.
Fig. 6 is the figure of the experimental example for representing first embodiment of the present invention.
Fig. 7 is the figure of the structure of the heat insulating structure body of the heat-insulated container for representing fourth embodiment of the present invention.
Fig. 8 is the figure of the structure of the heat insulating structure body of the heat-insulated container for representing fifth embodiment of the present invention.
Fig. 9 A are the figures of of the blast resistance construction body A for representing sixth embodiment of the present invention.
Fig. 9 B are the figures of of the blast resistance construction body A for representing sixth embodiment of the present invention.
Figure 10 is the figure of the heat insulation structural for representing existing cryogenic tank.
Specific embodiment
Below, embodiments of the present invention are described with reference to.Additionally, the present invention is not limited to each embodiment.
(the 1st embodiment)
Fig. 1～Fig. 5 represent the present invention the 1st embodiment in heat-insulated container 1.
Fig. 1 be the present invention the 1st embodiment heat-insulated container 1 sectional view, Fig. 2 be represent the heat-insulated container 1 every
The amplification sectional view of thermal structure 2, Fig. 3 are cutting for the vacuum heat insulation material 8 used in the heat insulating structure body 2 of the heat-insulated container 1
Face figure, Fig. 4 are the plans of the vacuum heat insulation material 8, and Fig. 5 is the thermal simulation knot for representing heat-insulated container 1 in the 1st embodiment
The explanatory diagram of fruit.
In the present embodiment, the heat-insulated container of the spherical independent tank mode (MOS modes) in representing for LNG tank ship etc.
1。
In FIG, to be used for preserving more than 100 DEG C lower than normal temperature of material, such as -162 DEG C of liquefaction natural for heat-insulated container 1
Gas (hereinafter referred to as LNG), which includes the heat insulating structure body 2 being thermally shielded to outer surface portion and inner surface portion.Supporting mass 3 is used for will
Heat-insulated container 1 is fixed on hull 4, referred to as skirtboard (skirt).Supporting mass 3 is for example in the middle insertion of aluminium alloy and cryogenic steel
The low stainless steel of pyroconductivity, can form the thermal arrest structure for reducing that heat is invaded.In addition, the heat insulating structure body 2 of heat-insulated container 1
Periphery covered by outer cover 5.
A structure of the heat insulating structure body 2 of heat-insulated container 1 is represented in fig. 2.The container casing 6 of heat-insulated container 1 is adopted
5mm or so thick stainless steel etc. is formed.
A thermal insulation layer 7 and the vacuum heat insulation material 8 that be configured at which on the outside of of the heat insulating structure body 2 by 6 side of container casing
Constitute.
1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b structure that be configured at which on the outside of of the thermal insulation layer 7 by 6 side of container casing
Into.1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b are constituted by pasting thousands of pieces of square thermal insulation boards 9 respectively.
In the present embodiment, thermal insulation board 9 is by 300mm～400mm or so thick foamed styrene (expandable polystyrene
Bead (expanded polystyrene (EPS) formed by Expandable Polystyrene Beads-EPS)) formed, but can also adopt
Constituted with the heat-barrier material such as polyurethane foam, phenol formaldehyde foam and the mineral wool being filled in thermal-insulated frame or pearlite.
Additionally, in order to ensure intensity, a thermal insulation layer 7 of present embodiment the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b with
Wire netting 7c is provided between vacuum heat insulation material 8.Thermal insulation layer 7 is mounted on bolt 10 with vacuum heat insulation material 8
Container casing 6.
In addition, being configured at the vacuum heat insulation material 8 of the outer side of a thermal insulation layer 7, its pyroconductivity λ at 0 DEG C is
0.002W/ (m K), compared with the foamed styrene of the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b is constituted, about low 15 times or so.
Vacuum heat insulation material 8 as shown in figure 3, by core 14 be enclosed in overcoating part 15 and carry out decompression it is closed, constitute tabular.
Overcoating part 15 is by being laminated following multilayer and the laminated film that constitutes：The 1st protective layer 16a being made up of PET film of 12 μ m-thicks, 25
The 2nd protective layer 16b being made up of nylon membrane of μ m-thick, the gas-barrier layer 17 being made up of aluminium foil of 7 μ m-thicks, and 50 μ m-thicks by
The hot welding layer 18 that low density polyethylene films are constituted.
Vacuum heat insulation material 8 is constituted by the following method：Average fiber footpath to will be generated with centrifugal process is 4 μm of glass fibers
Dimension sintering and constitute core 14, and the adsorbent 20 with calcium oxide as primary raw material reduced pressure, in end with hot welding layer
18 mode thermal weldings relative to each other are simultaneously closed by which.In the part of thermal welding and its Outboard Sections, forming inside does not have core
14th, and the sealing fin 13 that contacts with each other of overcoating part 15.
In addition, in the vacuum heat insulation material 8 of present embodiment, in the PET of the 1st protective layer 16a for constituting overcoating part 15
The outside of film top and bottom, lamination thermal stress dispersion layer 21 and it is integrated.That is, overcoating part 15 is constituted by the thermal stress dispersion layer 21
Outermost layer.Additionally, thermal stress dispersion layer 21 can also form one by bonding with the 1st protective layer 16a.
Thermal stress dispersion layer 21 by linear expansion coefficient is little, thermal contraction is few, and to the patience and high mechanical strength of ultralow temperature
Material is formed.For example, in the present embodiment, thermal stress dispersion layer 21 is made up of 150 μm or so thick glass cloth.
In addition, the gas adsorption material as interior bag in the adsorbent 20 of vacuum heat insulation material 8, using will be by ZSM-5
The sorbing material that zeolite is constituted forms the material of the big powder of surface area.Additionally, in order to improve the N2 adsorption characteristic under normal temperature,
In ZSM-5 zeolite, it is one more preferably using the copper site of at least more than 50% in the copper site (copper site) of ZSM-5 zeolite
Valency copper site, sorbing material of at least more than 50% in monovalence copper site for the monovalence copper site of tricluster oxygen.
Like this, by using the adsorbent of the monovalence copper site rate of tricluster oxygen, air can be greatly improved
Adsorbance.
In addition, the gas adsorption material for using in the present embodiment is ZSM-5 zeolite, combustible material landform is not used
Into.Thus, gas adsorption material is configured inside the vacuum heat insulation material in used in the tank of imflammable gas etc. as LNG
When, even if in the case where causing imflammable gas to invade 8 inside of vacuum heat insulation material because of deterioration etc. all the year round, there will not be and catch fire
Deng danger, safe vacuum heat insulation material 8 can be constituted.
In addition, in the vacuum heat insulation material 8 of present embodiment, further increasing anti-flammability structure.That is, by vacuum
The core 14 of heat-barrier material 8 uses inorfil, and compared with the heat-barrier material using organic fiber, anti-flammability is improved, its
As a result, it is possible to improve the anti-flammability of heat-insulated container 1.Further, since use inorfil, so caused by the moisture in gas
Volumetric expansion also reduce, as a result, the shape retention and resistance to explosion-proof described later of heat-insulated container 1 can be improved.
In addition, as shown in figure 4, vacuum heat insulation material 8 is provided with its substantially central portion (also including central portion) makes once
The breakthrough part 8a of the insert of bolt 10 that thermal insulation layer is installed, by the hot welding layer that overcoating part 15 is snugly into each other around breakthrough part 8a
15a is constituted.
Additionally, the present invention is not limited to the structure using this bolt 10.For example, it is also possible to portion 8a is had no through, and
The end that vacuum heat insulation material 8 is abutted each other is filled with packing materials such as polyurethane.In this configuration, vacuum heat insulation material 8
Each other in the state that material is fixed is filled, so because of stress deformation caused by the temperature difference of top and bottom, easily producing rupture etc..
Thus, thermal stress dispersion layer 21 is provided between vacuum heat insulation material 8 and a thermal insulation layer 7, by thermal stress scattered structure
It is particularly effective.
The vacuum heat insulation material 8 constituted using aforesaid way is pasted on into a thermal insulation layer 7, and is fixed in vessel shell
Body 6.
In the present embodiment, first, in the outermost thermal stress dispersion of the overcoating part 15 for constituting vacuum heat insulation material 8
In layer 21, relative with thermal insulation layer 7 (the 2nd thermal insulation layer 7b) entire surface, the bonding formed by methods such as hot melts is applied
Agent 22, it is integrated in the outer surface bonding vacuum heat insulation material 8 of the thermal insulation board 9 for constituting a thermal insulation layer 7.
Then, 8 shape all-in-one-piece thermal insulation board 9 of vacuum heat insulation material is fixed on by above-mentioned by vessel shell using known method
Body 6, then installs vacuum heat insulation material 8.For example, as shown in Fig. 2 by top insertion its breakthrough part from vacuum heat insulation material 8
The bolt 10 of 8a and thermal insulation board 9 is fastened on by welding etc. and on fixed nut 6a such that it is able to be fixed on container casing 6.
Now, in the present embodiment, the welding layer around the breakthrough part 8a of the pressing vacuum heat insulation material 8 of head flange 11 of bolt 10
15a, thus, vacuum heat insulation material 8 is optionally further secured in thermal insulation board 9.
In addition, in order to ensure thermal insulation, it is also possible between the interface of vacuum heat insulation material 8, an and septum secundum
Filling with insulation material 12 is set in the gap between the interface of thermosphere 7.As the filling with insulation material 12, for example, make
With soft and be rich in retractility, micro- mineral wool that fibre diameter is less than 1 μm.As long as additionally, filling with insulation material 12 is soft
And by being rich in the material of retractility, or flexibel polyurethane or be close to container casing 6 linear expansion coefficient material
Material, for example, be added with phenol formaldehyde foam or polyurethane foam of reinforcement material etc..
In addition, in the present embodiment, the docking section of vacuum heat insulation material 8 with the thermal insulation board 9 for being constituted a thermal insulation layer 7
The mode that offsets one from another of docking section arrange.
In addition, being formed at the sealing fin 13 of the outer peripheral edge of vacuum heat insulation material 8 to fold into a low temperature side, i.e. thermal insulation layer
The mode of 7 sides is configured.
Below, the action effect of said structure is illustrated.
Heat-insulated container 1 is leaned on than a thermal insulation layer 7 with being configured at by being configured at the thermal insulation layer 7 on the outside of container casing 6
The vacuum heat insulation material 8 of outer side is thermally shielded, and the LNG low temperature in container casing 6 is kept.
Herein, in heat-insulated container 1, the entire surface of vacuum heat insulation material 8 is integratedly bonded in a septum secundum by binding agent 22
The outer surface of thermosphere 7 (the 2nd thermal insulation layer 7b).Thus, when there is thermal contraction on a thermal insulation layer 7 (the 2nd thermal insulation layer 7b), by
This drawing contractility for producing can put on the overcoating part 15 of vacuum heat insulation material 8.
The thermal contraction for putting on a thermal insulation layer 7 (the 2nd thermal insulation layer 7b) for the overcoating part 15 of vacuum heat insulation material 8 is produced
Raw drawing contractility, puts on the outermost thermal stress dispersion layer 21 of the overcoating part 15 for constituting vacuum heat insulation material 8.
In the present embodiment, thermal stress dispersion layer 21 is made up of glass cloth, and its linear expansion coefficient is little, thermal contraction is few, and
And resistance to ultralow warm nature and high mechanical strength.Thus, thermal stress dispersion layer 21 resists the heat of a thermal insulation layer 7 (the 2nd thermal insulation layer 7b)
Shrink, substantially will not thermal contraction, thermal shrinkage force dispersion is absorbed so as to which thermal contraction will not occur substantially.
As a result, strongly can suppress thermal stress dispersion layer 21 is integratedly laminated it is overcoating part 15,
There is cracking on the gas barrier layer 17 that be made up of aluminium foil.Particularly thermal contraction cracking is susceptible in corner.But, by thermal stress
Dispersion layer 21 bears and disperses this easily to concentrate on the thermal shrinkage stress in corner, and corner is protected being subject to thermal shrinkage stress
Impact, effectively can suppress thermal shrinkage stress concentration and caused cracking.
Therefore, even if Long-Time Service, it is also possible to prevent cracking, Neng Gouchang occur on the gas-barrier layer 17 of overcoating part 15
Phase maintains the high thermal insulation of vacuum heat insulation material 8, it is ensured that the thermal insulation of heat-insulated container 1.
In addition, in the present embodiment, using glass cloth as thermal stress dispersion layer 21.Glass cloth linear expansion coefficient is little,
Thermal contraction is few, and the patience and high mechanical strength to ultralow temperature.And, the pyroconductivity of glass cloth is also low, and thermal insulation is high.By
This, can suppress to cause vacuum heat insulation material 8 that low temperature brittleness occurs because of the ultralow temperature of the material being stored in container casing 6.Cause
This, cracking caused by can suppressing the low temperature brittleness of overcoating part 15 is produced, and can ensure the heat-insulated of heat-insulated container 1 for a long time
Property.
In addition, in the present embodiment, as the outermost thermal stress dispersion layer of the overcoating part 15 of vacuum heat insulation material
21, the upper and lower surface of overcoating part 15 is integratedly laminated to respectively.Thus, the overcoating part 15 of vacuum heat insulation material 8 is whole at which
Outer surface, intensity are uprised, and are prevented from causing overcoating part 15 to occur being cracked and damaged because of operation process during production etc..Therefore,
Defect ware incidence easily produce in the assembling process of heat insulating structure body 2, vacuum heat insulation material 8 can be suppressed, suppressed
Cost increase, while guarantee the heat-proof quality of high heat-insulated container 1 for a long time.
In addition, in the present embodiment, vacuum heat insulation material 8 also makes bolt except forming one in vitro using binding agent 22
10 inserts are arranged at the breakthrough part 8a of substantially central portion, and the surrounding mechanical of breakthrough part 8a is fixed on a thermal insulation layer 7.By
This, even if the bonding of binding agent 22 is deteriorated because the time deteriorates, or even has arrived vacuum heat insulation material 8 because own wt easily falls
Situation, it is also possible to prevent this from falling.Thereby, it is possible to realize that vacuum heat insulation material 8 will not occur the secure and reliable property such as peeling
High structure.
In addition, above-mentioned mechanical fixation is outer around the pressing breakthrough part 8a of head flange 11 by using bolt 10
Cover the welding layer 15a snugly into each other of part 15 to carry out.Thereby, it is possible to not damage the core 14 of vacuum heat insulation material 8
Vacuum heat insulation material 8 is fixed on 15 ground of overcoating part for dividing, and is prevented overcoating part 15 from damaging caused heat-proof quality and is declined and be cladded with part 15
Deterioration such that it is able to ensure heat-proof quality for a long time.
And, in the present embodiment, a thermal insulation layer 7 of 6 outer surface of container casing of heat-insulated container 1 is arranged at, is
Constituted by overlapping the 2nd thermal insulation layer 7b on the 1st thermal insulation layer 7a.Thus, it is heat-insulated using the 1st thermal insulation layer 7a and the 2nd
Layer 7b, can be greatly decreased the ultralow temperature leakage of the material being stored in container casing 6 to vacuum heat insulation material 8.Its knot
Fruit is can effectively to suppress the low temperature brittleness of the overcoating part 15 of vacuum heat insulation material 8.Thus, vacuum heat insulation material 8 can be tieed up
Original high heat-proof quality is held, and high thermal insulation can be ensured for a long time.
By a thermal insulation layer 7 being thermally shielded between container casing 6 and vacuum heat insulation material 8 will be separated into the 1st every
Thermosphere 7a is configured with the 2nd thermal insulation layer 7b, forms air layer between both.Thus, by breaking off the continuous of material
Property (the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b is integrated, constitute the 1st thermal insulation layer 7a, the material of the 2nd thermal insulation layer 7b, for example foam
Styrene is from 6 side of container casing continuously to continuity during vacuum heat insulation material 8), the leakage rate of ultralow temperature, energy can be reduced
Enough low temperature brittleness for more effectively suppressing the overcoating part 15 of vacuum heat insulation material 8.
In addition, as has already been discussed, the heat biography of the vacuum heat insulation material 8 in present embodiment in heat insulating structure body 2
Conductance λ with constitute a thermal insulation layer 7 the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b foamed styrene pyroconductivity compared with, greatly
About low 15 times or so.Thus, the effect of heat insulation of vacuum heat insulation material 8 is added, and only by the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b
Composition is compared, and can greatly improve its heat-proof quality.
And, vacuum heat insulation material 8 gives full play to the heat that its high heat-proof quality blocks extraneous air, makes vacuum heat-insulation
The inner side of material 8, the atmosphere temperature for arranging the once part of thermal insulation layer 7 decline to a great extent.Thereby, it is possible to relatively improve one
The effect of heat insulation that secondary thermal insulation layer 7 has itself, adds the high effect of heat insulation that vacuum heat insulation material 8 has itself, can
It is greatly enhanced its heat-proof quality.
In addition, the 1st thermal insulation layer 7a, the 2nd thermal insulation layer 7b of a thermal insulation layer 7 are only made up of foamed styrene.Thus, from
The conduction of the ultralow temperature of the materials such as LNG, i.e. ultralow temperature leakage rate are of substantially equal in whole region.As a result, a thermal insulation layer 7
The Temperature Distribution of the one side contacted with vacuum heat insulation material 8 of (the 2nd thermal insulation layer 7b) is of substantially equal.Thus, with a thermal insulation layer 7
The vacuum heat insulation material 8 that (the 2nd thermal insulation layer 7b) is contacted, also including including adjacent vacuum heat insulation material 8, substantially which is all of
Temperature Distribution approximate equality.Thus, in vacuum heat insulation material 8, because of the thermal expansion for being cladded with part 15 caused by temperature distributing disproportionation
Difference is also inhibited, it is also possible to prevent cracking caused by the thermal expansion difference of overcoating part 15 itself, it is possible to more long-term
Ensure high thermal insulation.
In other words, as vacuum heat insulation material 8 is configured at the outer surface of a thermal insulation layer 7, so from materials such as LNG to true
The distance of empty heat-barrier material 8 is essentially identical in whole region.Therefore, from materials such as LNG to the ultralow temperature of vacuum heat insulation material 8
Conduction, i.e., ultralow temperature leakage rate is of substantially equal in whole region.From the point of view of from this point on, vacuum heat insulation material 8 with once
The Temperature Distribution of the one side that thermal insulation layer 7 (the 2nd thermal insulation layer 7b) is contacted is also of substantially equal.Thereby, it is possible to suppress vacuum heat insulation material 8
Overcoating part 15 temperature distributing disproportionation, so as to suppress the difference of the telescopic level of overcoating part 15, generation tortoise can be greatly reduced
The degree split.
In addition, in the present embodiment, the outside of a thermal insulation layer 7 is covered by vacuum heat insulation material 8, it is possible to suppressing
The surface temperature of thermal insulation layer 7 produces difference because of environmental condition, and further can suppress to contact with thermal insulation layer 7 is true
The cracking of the overcoating part 15 of empty heat-barrier material 8.
In addition, the filling with insulation material 12 being filled in 8 mutual docking section of vacuum heat insulation material is made up of micro- mineral wool,
It is soft and be rich in retractility.Thus, though because the changes in temperature of extraneous air produce slightly on vacuum heat insulation material 8 it is flexible, fill out
Fill heat-barrier material 12 also to stretch therewith, thus be also prevented from because vacuum heat insulation material 8 it is flexible suffer restraints caused by it is outer
Cover part 15 and crack failure etc. occurs, higher heat-proof quality can be guaranteed for a long time.
In addition, vacuum heat insulation material 8 is that have to breathe freely by using 15 vacuum sealing of overcoating part being made up of laminated film
The core 14 of property, and be sealed against fin side 13 and fold into thermal insulation layer 7 (a 2nd thermal insulation layer 7b) side.Thereby, it is possible to suppress
By heat leak caused by the sealing fin 13 of vacuum heat insulation material 8.Vacuum insulation material is made full use of therefore, it is possible to effectively play
The effect of heat insulation of material 8 and the effect for reducing the atmosphere temperature of 7 setting unit of thermal insulation layer.Make thereby, it is possible to give full play to
With the effect of heat insulation of vacuum heat insulation material 8, thermal insulation is greatly improved.
Fig. 5 is the explanatory diagram of thermal simulation result in the 1st embodiment for represent the present invention, and dotted line represents existing thermal insulation board
The position of the vacuum heat insulation material being configured in figure, the Low Temperature Thermal of LNG are moved to the characteristic of the existing type of extraneous air, dot-dash
Line represents the characteristic of the structure of present embodiment.
According to Fig. 5, in the structure of present embodiment, according to the effect of heat insulation of vacuum heat insulation material 8, one can be made
The hull-skin temperature of secondary thermal insulation layer 7 is down to B from A.That is, by vacuum heat insulation material 8, the gas of the setting unit of a thermal insulation layer 7
Atmosphere temperature drops to B from A.And, the thermal gradient angle in a thermal insulation layer 7 slows down, so low in a thermal insulation layer 7 itself
The mobile reduction of heat, and the effect of heat insulation raising of a thermal insulation layer 7 bringing of declines of atmosphere temperature.
Fig. 6 is the figure of the experimental example for representing first embodiment of the present invention.
In figure 6, comparative example 1 is the structure for not configuring vacuum heat insulation material, only being formed by thermal insulation layer.In experimental example 1
In, measure to pass in the heat that outer wall side is provided with the structure of vacuum heat insulation material with the thickness of comparative example identical thermal insulation layer
Pass the change of coefficient.In experimental example 2, wall side is provided with outside vacuum heat insulation material with the exception that, with 1 identical of comparative example
In the case of heat transfer coefficient, which kind of degree the thickness for measuring thermal insulation layer is thickened to.
Used as condition during these data of measurement, the temperature in tank is -160 DEG C, and external air temperature is 25 DEG C.
In addition, adopting foamed styrene as a thermal insulation layer 7.
In experimental example 1, the thickness of whole thermal insulation layer is same with comparative example 1, determines average heat transfer coefficient.In this situation
Under, it is compared with comparative example 1, heat-proof quality improves 28%.
In experimental example 2, in the case where the heat-proof quality same with comparative example 1 is gone for, whole thermal insulation layer is determined
Which kind of degree increasing is as thin as.In the case, it is known that be compared with comparative example 1, can reduce by 37% thickness.
Like this, the structure according to present embodiment, significantly can reduce by the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b structures
Into a thermal insulation layer 7 gross thickness.For example, it is assumed that the plate thickness of vacuum heat insulation material 8 is 20mm, can be by the 1st thermal insulation layer
The thinning 170mm of aggregate thickness of 7a and the 2nd thermal insulation layer 7b, can correspondingly increase the volume of heat-insulated container 1.
For example, by by the structure of present embodiment for the heat-insulated of the LNG tank ship with the boil-off gas of LNG as fuel etc.
In container (tank), the usage amount of LNG can be controlled.Thus, economy is improved, and the boil-off gas of LNG are being liquefied again
In the LNG tank ship of mode, can reduce for the re-liquefied energy loss.
In addition, by using inorfil as vacuum heat insulation material 8 core 14, can be for prolonging because of outside fire
Burn to heat-insulated container 1 and realize the flame retardancy of heat-barrier material.Even if in addition, moisture remains in the overcoating part 15 of vacuum heat insulation material 8
In, it is also possible to suppress core 14 because the moisture expansion is so as to cause vacuum heat insulation material 8 itself to deform.Thereby, it is possible to anti-
Only periodically carry out as LNG heat-insulated containers etc. when warm water cleaning etc. is safeguarded to carry out vacuum insulation material 8 when the warm water is cleaned big
Width dilatancy, causes to produce cracking on its overcoating part 15, energy because of the significantly thermal expansion deformation of vacuum heat insulation material 8 itself
Enough thermal insulations for more reliably ensureing heat-insulated container 1.
In addition, as core 14, used by being sintered to glass fibre, thus with the situation phase not being sintered
Than can significantly suppress change in size.
For example, using be not sintered but with centrifugal process formed core 14 in the case of, size distortion becomes 2 times
More than, thickness is substantially thickened to 5～6 times.On the other hand, size distortion can be suppressed by the structure according to present embodiment
1.2 times or so, most less than 1.5 times, it is possible to suppressing because of disadvantage caused by the generation size distortion in the inwall of tank with outer wall
End.
Additionally, in the present embodiment, core 14 is formed with centrifugal process, but also can be used using such as copy paper like that
By the core 14 manufactured paper with pulp method and formed of the dehydration of the core containing moisture.
In the case of using the core 14 by method formation of manufacturing paper with pulp, disperse fiber by which is dissolved in water in advance,
Then it is dehydrated, size distortion when being reduced pressure relative to atmospheric pressure is few, lower thickness.Therefore, even if because of cracking etc.
And rupture in the case of, it is also possible to suppress because size distortion produce the drawbacks of.
In addition, according to present embodiment, vacuum heat insulation material 8 is configured to into row in the outermost wall side of heat-insulated container 1,
So two row thermal insulation boards need not be configured as prior art and overlapped 8 major part of vacuum heat insulation material substantial amounts of true like that
Empty heat-barrier material 8, it is possible to the lot of materials and cost needed for reducing.
(the 2nd embodiment)
Then, illustrate the 2nd embodiment of the present invention.
The structure of the 2nd embodiment is same with structure shown in Fig. 1～Fig. 4, but different at following two aspects：By mutually not
Material of the same race forms the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b for constituting a thermal insulation layer 7；Or, even identical foaming
Styrene, also makes its foam density different, and the heat-proof quality of the 2nd thermal insulation layer 7b is same with the heat-proof quality of the 1st thermal insulation layer 7a
Deng or it is higher than which.
Following structure can for example be enumerated：By the expanded polystyrene (EPS) of EPS in a same manner as in the first embodiment formed the 1st every
Thermosphere 7a, forms the 2nd thermal insulation layer 7b by polyurethane foam.
Thus, using the 2nd thermal insulation layer 7b that the heat-proof quality on the outside of which is high, can be by the 1st of 6 side of container casing the
The atmosphere temperature of thermal insulation layer 7a setting units suppresses relatively low.Thereby, it is possible to improve the effect of heat insulation of the 1st thermal insulation layer 7a, accordingly
Ground suppresses the heat leak to vacuum heat insulation material 8, suppresses the low temperature brittleness of 15 temperature of overcoating part, further improves reliability.
And, by heat-proof quality higher than the 2nd thermal insulation layer 7b vacuum heat insulation material 8 is arranged at more outward wall side
Position, it is possible to increase the heat-proof quality of the 2nd thermal insulation layer 7b, and then can also improve the heat-proof quality of the 1st thermal insulation layer 7a.
(the 3rd embodiment)
Then, illustrate the 3rd embodiment of the present invention.
The structure of the 3rd embodiment is identical with the structure shown in Fig. 1～Fig. 4, but the overcoating part 15 of vacuum heat insulation material 8
The layer contacted with the 2nd thermal insulation layer 7b in 1st protective layer 16a, the 2nd protective layer 16b, compare its opposite side and extraneous air
The layer of contact, low temperature resistant degradation property are higher.
For example, the material for contacting side with the 2nd thermal insulation layer 7b of vacuum heat insulation material 8 using with aluminium foil to thermal stress disperse
Layer 21 on the inside of laminated film be coated after material.And, the material for contacting side with extraneous air of opposite to that side
Material is using the material after being coated to the laminated film on the inside of thermal stress dispersion layer 21 by aluminium-vapour deposition.
In addition, in the thermal stress dispersion layer 21 of the overcoating part 15 for contacting side with the 2nd thermal insulation layer 7b of vacuum heat insulation material 8
The laminated film of side adopts sandwich construction.The thermal stress of the overcoating part 15 for contacting side with extraneous air of opposite to that side point
Laminated film on the inside of scattered layer 21 adopts single layer structure.
Thereby, it is possible to further improve the low temperature resistant embrittlement of the overcoating part 15 as low temperature side of vacuum heat insulation material 8
Property, can effectively suppress low temperature brittleness.The overcoating part 15 of opposite to that side can using less expensive material or
Even person is identical, and material is also more marginally constituted, reliability can be improved with low cost.
In addition, positioned at outer wall side aluminium-vapour deposition film compared with aluminium foil heat-proof quality it is high, it is possible to suppressing extraneous air
The entrance of heat, can will maintain more low temperature in tank.
(the 4th embodiment)
Then, the 4th embodiment of the present invention is illustrated.
Fig. 7 is the figure of the structure of the heat insulating structure body 102 of the heat-insulated container 1 for representing fourth embodiment of the present invention.
In the 4th embodiment, arrange in the more lateral of the vacuum heat insulation material 8 of the 1st embodiment～the 3rd embodiment
There are three thermal insulation layers 23.Three times thermal insulation layer 23 can be using the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b phases with a thermal insulation layer 7
Same material is formed, it is also possible to formed with different materials.
According to the structure of the 4th embodiment, in addition to the effect of heat insulation of three thermal insulation layers 23, additionally it is possible to reduce vacuum heat-insulation
The temperature of the extraneous air side of material 8, further reduces the heat leak across overcoating part 15, can further enhance thermal insulation
Energy.
(the 5th embodiment)
Then, illustrate the 5th embodiment of the present invention.
Fig. 8 is the figure of the structure of the heat insulating structure body 202 of the heat-insulated container 1 for representing fifth embodiment of the present invention.
In the present embodiment, by the 8 double-deck configuration of vacuum heat insulation material of the 1st embodiment～the 4th embodiment, by which
Outer peripheral edge has height poorly to overlap.
According to above-mentioned this structure, the gap produced in 8 mutual docking section of vacuum heat insulation material can be eliminated, is significantly dropped
The low heat-insulated loss produced in the part, while the leak tightness between vacuum heat insulation material 8 and container casing 6 can be improved.Cause
This, further can improve makes the setting of 6 side of container casing once thermal insulation layer 7 (the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b)
Part atmosphere temperature decline effect, its thermal insulation can be further enhanced.
Additionally, in the present embodiment, including double-layer vacuum heat insulated material 8, but, for example, by by vacuum heat insulation material
The end shape of 8 outer peripheral edge forms difference of height, same with the docking section shown in Fig. 8, can make adjacent vacuum heat insulation material 8
Docking section be formed as the different shape for having difference of height in outer peripheral edge.Like this, even the vacuum heat insulation material of individual layer 8,
Can also suppress the heat from docking section mobile.
(the 6th embodiment)
Then, illustrate the 6th embodiment of the present invention.
In the 6th embodiment, can more reliably suppress and prevent when residual gas is in the outer of vacuum heat insulation material 8
The drastic deformation of vacuum heat insulation material 8 when covering 15 internal expansion of part.I.e., in the present embodiment, as shown in fig. 9 a and fig. 9b, if
It is equipped with when internal expansion of the residual gas in overcoating part 15, if residual gas becomes more than authorized pressure, by residue gas
Blast resistance construction body A of the body to outside release, so that improve security.
Additionally, blast resistance construction body A is identical with the 1st embodiment～the 5th embodiment with the structure and effect of outer portion, it is right
In the structure identical part mark identical symbol with the 1st embodiment～the 5th embodiment, the description thereof will be omitted, only illustrates
Different parts.
Blast resistance construction body A used in present embodiment is not limited to specific structure, representational for example to have,
Configuration example 1：Residual gas is made to the outside structure escaped to alleviate the expansion of overcoating part 15；With
Configuration example 2：The adsorbent 20 together enclosed inside overcoating part 15 with core 14 is the change of chemisorbed residual gas
Learn absorbent-type, the non-fever type that will not be generated heat because adsorbing residual gas or chemisorbed type and non-febrifacient structure.
Using Fig. 9 A and Fig. 9 B, the example of the blast resistance construction body A of configuration example 1 is illustrated.
Fig. 9 A and Fig. 9 B are the figures of a structure of the blast resistance construction body A for representing sixth embodiment of the present invention.
It is as the blast resistance construction body A of configuration example 1, representational to enumerate respectively as shown in fig. 9 a and fig. 9b unidirectional
Valve 24 and intensity decreases position 26.
Fig. 9 A represent the example of the blast resistance construction body A being made up of check valve 24.Check valve 24 have it is closed be arranged at it is overcoating
The lid-like of the valve opening 25 in a part for part 15.Valve opening 25 is arranged in the way of inside and outside the overcoating part 15 of insertion, the list of lid
It is made up of to valve 24 rubber elastomeric material.
Generally, valve opening 25 is closed by check valve 24, so being substantially prevented from the inside that extraneous air invades overcoating part 15.I.e.
Make to shrink because the temperature change of surrounding is cladded with part 15, the internal diameter of valve opening 25 changes therewith, as check valve 24 is by elastomeric material structure
Into so also can closed valve opening 25 well.In the case of internal expansion of the contingency residual gas in overcoating part 15, with interior
The rising of pressure, check valve 24 easily come off from valve opening 25, and residual gas is to outside escape.
In addition, Fig. 9 B represent the example of the blast resistance construction body A constituted by arranging intensity decreases position 26.Intensity decreases
Position 26 is made up of the position 26a for reducing a part of welding area at 13 mutual welding position of sealing fin.
In the example at the intensity decreases position 26, the inner side (14 side of core) in the welding position 26a of fin 13 is sealed
It is not fused.Therefore, the welding area in the 26a of position is less than the welding position of other sealing fins 13, exists in contingency residual gas
In the case of 15 internal expansion of overcoating part, because the pressure that the rising of internal pressure is produced easily concentrates on intensity decreases position 26.Then,
The position 26a for reducing the welding area of welding layer 15a is peeled off, and residual gas is to outside escape.
Additionally, intensity decreases position 26 be not limited to the structure of the subcontract welding area shown in Fig. 9 B, or
Welding area is identical, and local reduces the structure of heat seal strength.For example, it is also possible to when heat welded seals fin 13, only to one
Divide and reduce the heat for applying, reduce the welding degree at welding position.Or, it is also possible to intensity decreases position 26 is arranged at into sealing fin
Beyond 13 welding position.For example, it is also possible between the hot welding layer 18 and gas-barrier layer 17 for constituting overcoating part 15, be formed
The position for reducing stacking strength local, so that constitute intensity decreases position 26.
Alternatively, it is also possible to pass through a part of material of hot welding layer 18 using the heat seal strength material lower than other positions,
Form intensity decreases position 26.For example, as described above, low density polyethylene (LDPE) can be preferably used as hot welding layer 18, but
In a part for hot welding layer 18, it is also possible to poly- to benzene using high density polyethylene (HDPE), ethylene-vinyl alcohol copolymer or amorphous
Naphthalate etc..The heat seal strength of these macromolecular materials is lower than low density polyethylene (LDPE), so being suitable for forming strong
Degree reduces position 26.
In addition, as the forming method at intensity decreases position 26, it is also possible to adopt and partly reduce each hot welding layer 18
The structure of the thickness at welding position；A part of the binding agent for making adhesion strength little between the welding position as hot welding layer 18
Structure in region；With in the region of the sealing fin 13 as overcoating part 15, hot welding layer 18 is partly peeled off, directly will
The structure of thermal welding etc. each other of gas-barrier layer 17.
When just in case accident occurs, vacuum heat insulation material 8 is possible to be exposed in rugged environment.But, in this enforcement
In the case of mode, when vacuum heat insulation material 8 is exposed in rugged environment, during internal residual gas expansion etc., check valve
24 depart from from valve opening 25, and the excessive bulbs of pressure can be effectively prevented from vacuum from intensity decreases position 26 to outside release
The deformation of heat-barrier material 8.Therefore, it is possible to improve the explosion-proof of vacuum heat insulation material 8, the security of heat-insulated container 1 is improved.
Additionally, in Fig. 9 A and Fig. 9 B of structure of present embodiment are represented, and not shown it is arranged at vacuum heat insulation material 8
Thermal stress dispersion layer 21, but emphasize to illustrate blast resistance construction body A.
On the other hand, as the blast resistance construction body A of configuration example 2, enumerate the adsorption material being made up of above-mentioned ZSM-5 zeolite
Material.The ZSM-5 zeolite for constituting sorbing material is the adsorbent with chemisorption.Therefore, even if occurring in temperature
Various environmental factors as rising, it is also possible to be substantially prevented from the gas for having adsorbed and be released again.Thus, processing flammable
Property fuel when, even if because certain reason adsorbent 20 adsorbs imflammable gas, gas will not also be subject to temperature afterwards
Rising etc. affects and discharges again.As a result, the explosion-proof of vacuum heat insulation material 8 further can be improved.
In addition, ZSM-5 zeolite is non-flame properties adsorbent, thus the adsorbent 20 of present embodiment substantially only by
Non-automatic incombustible material is constituted.Therefore, also combustible material, energy are not used in the inside of vacuum heat insulation material 8 including including core 14
It is enough further to improve explosion-proof.
Like this, if adsorbent 20 is chemisorbed type, compared with physisorption type, the residual gas of absorption is not allowed
Easily depart from, it is possible to keeping the vacuum inside vacuum heat insulation material 8 well.And, residual gas without departing from, so
Residual gas can be effectively prevented causes vacuum heat insulation material 8 to deform in overcoating 15 internal expansion of part.Thereby, it is possible to improve
The explosion-proof and stability of vacuum heat insulation material 8.
In addition, if adsorbent 20 is non-heat generation material, flame-retardant materials or meets both materials, even if because
The foreign matters such as the damage of overcoating part 15 are invaded inside which, are also avoided that adsorbent 20 generates heat, burns.It is true thereby, it is possible to further improve
The explosion-proof and stability of empty heat-barrier material 8.
As discussed above, the heat-insulated container 1 of embodiment of the present invention, by using vacuum heat insulation material 8
Thermal insulation is improved, and suppresses the caused heat-proof quality of thermal contraction cracking of the overcoating part 15 because of vacuum heat insulation material 8 to decline, by
This can ensure high thermal insulation for a long time.Certainly, numerous variations can be carried out in scope this structure for reaching the object of the invention.
Exemplified with the knot for for example vacuum heat insulation material 8 and a thermal insulation layer 7 being bondd and integratedly being fixed with binding agent 22
Structure, but it is also possible to when the thermal insulation board 9 for constituting a thermal insulation layer 7 is molded, by 8 integrally formed fixation of vacuum heat insulation material.
In addition, in embodiments, exemplified with vacuum heat insulation material 8 being bondd with binding agent 22, and and with utilizing spiral shell
The head flange 11 of bolt 10 is mechanically fixed, so as to be fixed integrally to the structure of a thermal insulation layer 7.But, the machinery is solid
It is fixed it is not necessary to, appropriate application as needed.
In addition, exemplified with vacuum heat insulation material 8 thermal stress dispersion layer 21 be arranged at vacuum heat insulation material 8 two sides knot
Structure, but as long as at least once will be arranged at stationary plane side by thermal insulation layer 7.In the case, although be difficult to expect by carrying
The intensity of the upper and lower surface of high vacuum insulation material 8 prevents poor quality effect to reduce, but sufficiently achieves the present invention's
Expected purpose.
In addition, used as thermal stress dispersion layer 21, as long as citing illustrates glass cloth, but can make a thermal insulation layer 7
Thermal contraction and caused drawing convergent force dispersion, can be any material.For example, in addition to glass fibre, it is also possible to use
From linear expansion coefficient is little and intensity is stronger carbon fiber, alumina fibre, silicon carbide fibre, aramid fiber, polyamide
The material selected in fiber and polyimide fiber.
In addition, it is outer so as to constitute to also illustrate the overcoating part 15 that thermal stress dispersion layer 21 is laminated to vacuum heat insulation material 8
Cover the outermost example of part 15, but the thermal stress dispersion layer 21 can also as separate part, using binding agent and vacuum every
Both warmware 8 and a thermal insulation layer 7 bonding forms one.
In addition, in embodiments, illustrate the example of the tank that heat-insulated container 1 is used as LNG tank ship etc., but the present invention is simultaneously
Not limited to this example, it is also possible to be provided in the heat-insulated container or the low temperature in medical treatment and industry of the LNG tank of land etc.
Preserve the heat-insulated container of container etc..The material for being preserved may not be LNG, but liquid hydrogen etc., as long as it is lower than normal temperature 100 DEG C
More than, can be any material.
As described above, the heat-insulated container of embodiment of the present invention is the thing for more than 100 DEG C lower than normal temperature of keeping temperature
The heat-insulated container of matter, which includes：Container casing；With the outside for being configured at container casing, and container casing side is at least configured at
A thermal insulation layer.And, also include：The position of portion side more outer than thermal insulation layer is configured at, and including with gas permeability
Core and vacuum sealing core overcoating part vacuum heat insulation material；Be configured at vacuum heat insulation material and thermal insulation layer it
Between thermal stress dispersion layer.
According to such structure, even if it is poor to there is thermal contraction at one time between thermal insulation layer and vacuum heat insulation material, a septum secundum
The thermal shrinkage force of thermosphere puts on the overcoating part of vacuum heat insulation material, and the thermal shrinkage force is also disperseed by thermal stress dispersion layer, can
Suppress the overcoating part of vacuum heat insulation material because thermal contraction difference causes to produce cracking etc..Thereby, it is possible to maintain vacuum heat insulation material former
This high heat-proof quality, can ensure the heat-proof quality of heat-insulated container for a long time well.
In addition, thermal stress dispersion layer can also be made up of glass cloth.
According to such structure, outside the heat-proof quality also having plus glass cloth, overcoating part is prevented from because of thermal contraction
And cracking occurs, and improve the thermal insulation of overcoating part itself, it is also possible to suppress the low temperature brittleness of overcoating part itself, improve reliable
Property, longer-term ground ensures high thermal insulation.
Alternatively, it is also possible to vacuum heat insulation material by thermal stress dispersion layer be laminated to overcoating part at least with a thermal insulation layer
The face of contact side simultaneously forms as one and constitutes.
According to such structure, only using as cost increase the reason for glass cloth contact side as with a thermal insulation layer
One side, its usage amount can be suppressed.Thereby, it is possible to control cost increase, while heat-insulated container can be ensured for a long time well
Heat-proof quality.
The upper and lower surface of overcoating part is laminated to by thermal stress dispersion layer alternatively, it is also possible to vacuum heat insulation material and is formed as
Integrally become the outermost layer of overcoating part.
According to such structure, the outermost layer of vacuum heat insulation material its upper and lower surface becomes the high thermal stress dispersion of intensity
Layer.Operation during thereby, it is possible to preventing because producing is processed occurs cracking, breakage on overcoating part, suppresses vacuum heat insulation material
Defect ware incidence, suppresses cost to increase, while the heat-proof quality of heat-insulated container can be ensured for a long time well.
Alternatively, it is also possible to using inorfil as vacuum heat insulation material core.
According to such structure, even if moisture is remained in the overcoating part of vacuum heat insulation material, it is also possible to prevent core because
The moisture and expand so as to cause vacuum heat insulation material itself deform.Even if temperature is carried out as LNG heat-insulated containers etc. periodically
When water cleaning etc. is safeguarded, there are some moistures to remain in overcoating part, can also prevent vacuum heat insulation material dilatancy, so as to prevent
Because the thermal expansion deformation of vacuum heat insulation material itself causes overcoating part that cracking occurs.Thereby, it is possible to more reliably ensure heat-insulated
The thermal insulation of container.
In addition, vacuum heat insulation material can also have blast resistance construction.
According to this structure, even if remaining some moistures and air in vacuum heat insulation material, because of the moisture or air etc.
Expand, when the bulbs of pressure become more than setting, it is also possible to by the bulbs of pressure from blast resistance construction part to outside discharge.
Thereby, it is possible to prevent from continuing expansion generation explosion type destruction, it is ensured that the security of heat-insulated container.
There is breakthrough part alternatively, it is also possible to vacuum heat insulation material, and be also mechanically fastened in a septum secundum across breakthrough part
Thermosphere.
According to such structure, vacuum heat insulation material is using forming one plus by the way of being mechanically fixed with a thermal insulation layer
Body.Thus, even if fixing force of the vacuum heat insulation material on a thermal insulation layer is deteriorated over time and died down, it is also possible to reliable anti-
Only vacuum heat insulation material peeling etc., realizes high reliability.
Alternatively, it is also possible to also include the bolt with flange part, overcoating part is formed around breakthrough part snugly into each other
Welding layer, is pressed by the flange part that welding layer is bolted, and vacuum heat insulation material is fixed in a thermal insulation layer.
According to such structure, the overcoating part of core part can not be damaged vacuum heat insulation material is fixed.Thereby, it is possible to
Heat-insulated decline and the deterioration of overcoating part caused by preventing overcoating part from damaging, can ensure heat-proof quality for a long time.
Industrial applicability
As described above, can have following special effect according to the present invention：The overcoating of vacuum heat insulation material can be suppressed
The thermal contraction of part is cracked and caused heat-proof quality declines.Therefore, the present invention can be widely used as the extremely low temperature with LNG as representative
The heat-insulated container of the storage and transport of material, it is highly useful.
Description of reference numerals
1 heat-insulated container
2nd, 102,202 heat insulating structure body
3 supporting masses
4 hulls
5 lids
6 container casings
6a nuts
7 thermal insulation layers
The 1st thermal insulation layers of 7a
The 2nd thermal insulation layers of 7b
7c wire nettings
8 vacuum heat insulation materials
8a breakthrough parts
9 thermal insulation boards
10 bolts
11 head flanges
12 filling with insulation material
13 sealing fins
14 cores
15 overcoating parts
15a welding layers
The 1st protective layers of 16a
The 2nd protective layers of 16b
17 gas barrier layers
18 hot welding layers
20 adsorbents
21 thermal stress dispersion layers
22 binding agents
23 3 thermal insulation layers
24 check valves
25 valve openings
26 intensity decreases positions
26a positions
A blast resistance construction bodies.
Claims (8)
1. a kind of heat-insulated container, it is characterised in that：
For more than 100 DEG C lower than normal temperature of material of keeping temperature, which includes：
Container casing；
The outside of the container casing is configured at, and is at least configured at a thermal insulation layer of the container casing side；
The position of portion side more outer than a thermal insulation layer is configured at, and including the core with gas permeability and vacuum sealing institute
State the vacuum heat insulation material of the overcoating part of core；With
The thermal stress dispersion layer being configured between the vacuum heat insulation material and a thermal insulation layer.
2. heat-insulated container as claimed in claim 1, it is characterised in that：
The thermal stress dispersion layer is made up of glass cloth.
3. heat-insulated container as claimed in claim 1 or 2, it is characterised in that：
The vacuum heat insulation material is laminated to the once heat-insulated at least with described of the overcoating part by the thermal stress dispersion layer
The face of layer contact side simultaneously forms as one and constitutes.
4. the heat-insulated container as any one of claims 1 to 3, it is characterised in that：
The vacuum heat insulation material is laminated to the upper and lower surface of the overcoating part by the thermal stress dispersion layer and is formed as one
Body and become the outermost layer of the overcoating part.
5. the heat-insulated container as any one of Claims 1 to 4, it is characterised in that：
Using inorfil as the vacuum heat insulation material the core.
6. the heat-insulated container as any one of Claims 1 to 5, it is characterised in that：
The vacuum heat insulation material has blast resistance construction.
7. the heat-insulated container as any one of claim 1～6, it is characterised in that：
The vacuum heat insulation material has breakthrough part, and is also mechanically fastened in described once heat-insulated across the breakthrough part
Layer.
8. heat-insulated container as claimed in claim 7, it is characterised in that：
Also include the bolt with flange part,
Overcoating part welding layer snugly into each other is formed around the breakthrough part,
By the welding layer by the flange part pressing of the bolt, the vacuum heat insulation material be fixed in it is described once
Thermal insulation layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014168148 | 2014-08-21 | ||
| JP2014-168148 | 2014-08-21 | ||
| PCT/JP2015/004119 WO2016027460A1 (en) | 2014-08-21 | 2015-08-19 | Heat insulation container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106536383A true CN106536383A (en) | 2017-03-22 |
| CN106536383B CN106536383B (en) | 2019-09-27 |
Family
ID=55350422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580038380.0A Expired - Fee Related CN106536383B (en) | 2014-08-21 | 2015-08-19 | Heat-insulated container |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6620315B2 (en) |
| CN (1) | CN106536383B (en) |
| WO (1) | WO2016027460A1 (en) |
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| CN108692182A (en) * | 2017-04-04 | 2018-10-23 | 东成泛泰克株式会社 | The heat insulation structural of ultra-low temperature storage tank |
| CN112912660A (en) * | 2018-10-25 | 2021-06-04 | 气体运输技术公司 | Sealed thermal insulation tank |
| CN113710948A (en) * | 2019-04-01 | 2021-11-26 | 气体运输技术公司 | Heat-insulating sealed storage tank |
| CN114623065A (en) * | 2020-12-10 | 2022-06-14 | 爱发科低温泵株式会社 | Cryopump and heat insulating structure for cryopump |
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|---|---|---|---|---|
| JPWO2016190176A1 (en) * | 2015-05-22 | 2018-03-08 | 旭硝子株式会社 | Laminated insulation with through hole and insulation structure |
| JP7257730B2 (en) * | 2016-03-31 | 2023-04-14 | 清水建設株式会社 | Cryogenic liquid storage tank |
| US10408378B2 (en) * | 2017-07-17 | 2019-09-10 | Raytheon Company | Three-dimensional multi-shell insulation |
| KR102003407B1 (en) * | 2017-12-27 | 2019-07-24 | 대우조선해양 주식회사 | Insulation system for natural gas cargo of carrier and liquefied natural gas fuel tank |
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- 2015-08-19 JP JP2016543818A patent/JP6620315B2/en not_active Expired - Fee Related
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| CN108692182A (en) * | 2017-04-04 | 2018-10-23 | 东成泛泰克株式会社 | The heat insulation structural of ultra-low temperature storage tank |
| CN112912660A (en) * | 2018-10-25 | 2021-06-04 | 气体运输技术公司 | Sealed thermal insulation tank |
| CN112912660B (en) * | 2018-10-25 | 2022-12-06 | 气体运输技术公司 | Sealed thermally insulated tank and method of manufacturing, ship and method and system for loading or unloading the same |
| CN113710948A (en) * | 2019-04-01 | 2021-11-26 | 气体运输技术公司 | Heat-insulating sealed storage tank |
| CN114623065A (en) * | 2020-12-10 | 2022-06-14 | 爱发科低温泵株式会社 | Cryopump and heat insulating structure for cryopump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6620315B2 (en) | 2019-12-18 |
| CN106536383B (en) | 2019-09-27 |
| JPWO2016027460A1 (en) | 2017-06-01 |
| WO2016027460A1 (en) | 2016-02-25 |
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