CN106536383B - Heat-insulated container - Google Patents
Heat-insulated container Download PDFInfo
- Publication number
- CN106536383B CN106536383B CN201580038380.0A CN201580038380A CN106536383B CN 106536383 B CN106536383 B CN 106536383B CN 201580038380 A CN201580038380 A CN 201580038380A CN 106536383 B CN106536383 B CN 106536383B
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- Prior art keywords
- layer
- vacuum heat
- insulation material
- heat
- heat insulation
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Classifications
-
- 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
Abstract
Heat-insulated container of the invention is used to keep 100 DEG C lower than room temperature of temperature or more of substance comprising: container casing；With the outside for being configured at container casing, and it is at least configured at a thermal insulation layer of container casing side.And, further includes: vacuum heat insulation material (8)；It is configured at the position that than one time thermal insulation layer leans on external side, and the overcoating part (15) including core material (14) and vacuum sealing core material (14) with gas permeability；And the thermal stress dispersion layer (21) being configured between vacuum heat insulation material (8) and a thermal insulation layer.According to this structure, it is able to suppress heat-proof quality decline caused by the thermal contraction cracking of the overcoating part (15) of vacuum heat insulation material (8), so can guarantee high heat-proof quality for a long time.
Description
Technical field
The present invention relates to the heat-insulated containers such as the cryogenic tanks of ultralow temperature substance such as storage LNG (liquefied natural gas).
Background technique
Under normal circumstances, for the cryogenic tank of storage liquefied natural gas (LNG) etc., in order to reduce in transport and storage
Evaporation loss, have begun using vacuum heat insulation material and strengthen heat-proof quality (for example, referring to patent document 1).
Figure 10 is the figure for indicating the heat insulation structural of 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 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 of phenol formaldehyde foam；With utilization hard polyurethane foams 104b
It is outer made of wrapping up around vacuum heat insulation material 104a (mineral wool as core material is vacuum-packed into multi-layer laminated films)
Laminate 104.Additionally include: in the outside of the mutual connector 106 of thermal insulation board 102, the addition configured in a manner of covering it every
Hot plate 105.Additional thermal insulation board 105 is identical as lamina rara externa 104, wraps up vacuum heat insulation material 105a with hard polyurethane foams 105b
Around and constitute.
According to this structure, it other than the hard polyurethane foams 104b of inner plating 103 and lamina rara externa 104, is alternately arranged
Vacuum heat insulation material 104a, 105a also stop the hot-fluid that outer wall is flowed to from the inner wall side of tank.Therefore, it can significantly improve low
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 the linear expansion coefficient of 105a, hard polyurethane foams 104b, 105b, in the long-term use, as vacuum heat-insulation
The multi-layer laminated films of the overcoating part of material 104a, 105a bear with the thermal contraction of hard polyurethane foams 104b, 105b and
The thermal shrinkage stress of generation, it is possible to be cracked.Accordingly, it is difficult to guarantee that vacuum heat insulation material 104a, 105a are had for a long time
Heat-proof quality.
That is, in patent document 1 in the structure, for example, the vacuum heat insulation material 104a of lamina rara externa 104 and hard are poly-
Urethane foam 104b is integrally formed.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 flexible by drawing repeatedly, cracking generated, because of the cracking, vacuum heat insulation material
The heat-proof quality of 104a is possible to decline.
Moreover, the ultralow temperature of the substance such as LNG is by constituting the phenol formaldehyde foam of inner plating 103 and the part of connector 106
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
Has the tendency that low temperature brittleness.Therefore, more long using the time because being cracked caused by being heat-shrinked, more be easy to happen, this becomes one
A big problem.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2010-249174 bulletin
Summary of the invention
The present invention is exactly that in view of the above point, its purpose is to provide a kind of heat-insulated containers, can prevent vacuum heat-insulation
The thermal contraction difference of the overcoating part of material leads to generate cracking so as to cause heat-proof quality decline, can guarantee high thermal insulation for a long time
Energy.
Heat-insulated container of the invention is the heat-insulated container for keeping 100 DEG C lower than room temperature of temperature or more of substance, packet
It includes: container casing；With the outside for being configured at container casing, and it is at least configured at a thermal insulation layer of container casing side.Moreover,
Further include: it is configured at the position that than one time thermal insulation layer leans on external side, and including core material and vacuum sealing core with gas permeability
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.
Even if there is poor, the heat of a thermal insulation layer of thermal contraction between thermal insulation layer and vacuum heat insulation material at one time as a result,
Convergent force is applied to the overcoating part of vacuum heat insulation material, which is also dispersed by thermal stress dispersion layer, is able to suppress vacuum
The overcoating part of heat-barrier material causes to generate cracking etc. because being heat-shrinked difference.Vacuum heat insulation material is able to maintain that original high as a result,
Heat-proof quality can guarantee the heat-proof quality of heat-insulated container well for a long time.
In accordance with the invention it is possible to inhibit the overcoating part of vacuum heat insulation material because under heat-proof quality caused by being heat-shrinked cracking
Drop, so can guarantee high heat-proof quality for a long time.
Detailed description of the invention
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 for indicating the heat insulating structure body of heat-insulated container of 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 view.
Fig. 5 is the explanatory diagram for indicating the thermal simulation result of the heat-insulated container of first embodiment of the present invention.
Fig. 6 is the figure for indicating the experimental example of first embodiment of the present invention.
Fig. 7 is the figure for indicating the structure of the heat insulating structure body of heat-insulated container of fourth embodiment of the present invention.
Fig. 8 is the figure for indicating the structure of the heat insulating structure body of heat-insulated container of fifth embodiment of the present invention.
Fig. 9 A is the figure for indicating an example of blast resistance construction body A of sixth embodiment of the present invention.
Fig. 9 B is the figure for indicating an example of blast resistance construction body A of sixth embodiment of the present invention.
Figure 10 is the figure for indicating the heat insulation structural of existing cryogenic tank.
Specific embodiment
In the following, being described with reference to embodiments of the present invention.In addition, the present invention is not limited to each embodiments.
(the 1st embodiment)
FIG. 1 to FIG. 5 indicates heat-insulated container 1 in the 1st embodiment of the invention.
Fig. 1 is the sectional view of the heat-insulated container 1 of the 1st embodiment of the invention, Fig. 2 be indicate the heat-insulated container 1 every
The amplification sectional view of thermal structure 2, Fig. 3 are cutting for 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 plan views of the vacuum heat insulation material 8, and Fig. 5 is the thermal simulation knot for indicating heat-insulated container 1 in the 1st embodiment
The explanatory diagram of fruit.
In the present embodiment, the heat-insulated container for the spherical independent tank mode (MOS mode) in LNG tank ship etc. is indicated
1。
In Fig. 1, heat-insulated container 1 be used for save 100 DEG C lower than room temperature or more substance, such as -162 DEG C of liquefaction it is natural
Gas (hereinafter referred to as LNG) comprising the heat insulating structure body 2 that outer surface portion and inner surface portion are thermally shielded.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 inserted into aluminium alloy and the intermediate of cryogenic steel
The low stainless steel of pyroconductivity is capable of forming the thermal arrest structure for reducing heat intrusion.In addition, the heat insulating structure body 2 of heat-insulated container 1
Periphery covered by outer cover 5.
An example structure of the heat insulating structure body 2 of heat-insulated container 1 is indicated in Fig. 2.The container casing 6 of heat-insulated container 1 uses
The formation such as stainless steel of 5mm or so thickness.
A thermal insulation layer 7 and the vacuum heat insulation material 8 that is configured at it on the outside of of the heat insulating structure body 2 by 6 side of container casing
It constitutes.
1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b structure that is configured at it on the outside of of the thermal insulation layer 7 by 6 side of container casing
At.1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b is constituted by pasting thousands of pieces of rectangular thermal insulation boards 9 respectively.
In the present embodiment, thermal insulation board 9 by 300mm~400mm or so thickness foamed styrene (expandable polystyrene
Bead (expanded polystyrene (EPS) formed by Expandable Polystyrene Beads-EPS)) it is formed, but can also adopt
It is constituted with polyurethane foam, phenol formaldehyde foam and the heat-barrier materials such as the mineral wool being filled in thermal-insulated frame or pearlite.
In addition, 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
Metal mesh 7c is provided between vacuum heat insulation material 8.Thermal insulation layer 7 is mounted on the bolt 10 of 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, pyroconductivity λ is at 0 DEG C
0.002W/ (mK), compared with the foamed styrene for constituting the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b, about low 15 times or so.
Vacuum heat insulation material 8 is as shown in figure 3, being enclosed in overcoating part 15 for core material 14 and depressurize closed, composition plate.
Overcoating part 15 is the laminated film constituted by being laminated following multilayer: the 1st protective layer 16a of 12 μ m-thicks being made of PET film, 25
The 2nd protective layer 16b being made of nylon membrane of μ m-thick, the μ m-thick of gas-barrier layer 17 and 50 of 7 μ m-thicks being made of aluminium foil by
The hot welding layer 18 that low density polyethylene films are constituted.
Vacuum heat insulation material 8 is constituted by the following method: to will with the average fiber footpath that centrifugal process generates be 4 μm of glass fibers
Dimension sintering and constitute core material 14 and depressurized using calcium oxide as the adsorbent 20 of primary raw material, in end with hot welding layer
18 mode thermal weldings relative to each other are simultaneously closed by its.Part and its exterior portion in thermal welding are formed internal without core material
14 and the sealing fin 13 that is in contact with each other of overcoating part 15.
In addition, in the vacuum heat insulation material 8 of present embodiment, in the PET for the 1st protective layer 16a for constituting overcoating part 15
The outside of film top and bottom, be laminated thermal stress dispersion layer 21 and it is integrated.That is, constituting overcoating part 15 by the thermal stress dispersion layer 21
Outermost layer.In addition, thermal stress dispersion layer 21 can also form one with the 1st protective layer 16a by bonding.
Thermal stress dispersion layer 21 is small by linear expansion coefficient, it is few to be heat-shrinked, and patience to ultralow temperature and high mechanical strength
Material is formed.For example, in the present embodiment, thermal stress dispersion layer 21 is made of 150 μm or so thick glass cloth.
In addition, as interior gas adsorption material of the packet in the adsorbent 20 of vacuum heat insulation material 8, using will be by ZSM-5
The adsorbent material that zeolite is constituted forms the big powdered material of surface area.In addition, in order to improve the N2 adsorption characteristic under room temperature,
It the use of at least 50% or more copper site in the copper site (copper site) of ZSM-5 zeolite is more preferably one in ZSM-5 zeolite
Valence copper site, in monovalence copper site at least 50% the above are the adsorbent materials in 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 used in the present embodiment is ZSM-5 zeolite, combustible material landform is not used
At.Gas adsorption material is configured inside the vacuum heat insulation material in the tank for being used in imflammable gas as LNG etc. as a result,
When, even if there will not be kindling because deterioration etc. causes imflammable gas to invade 8 inside of vacuum heat insulation material all the year round
Deng danger, safe vacuum heat insulation material 8 can be constituted.
In addition, further improving anti-flammability structure in the vacuum heat insulation material 8 of present embodiment.That is, passing through vacuum
The core material 14 of heat-barrier material 8 uses inorfil, and compared with the heat-barrier material for using organic fiber, anti-flammability is improved,
As a result, it is possible to improve the anti-flammability of heat-insulated container 1.In addition, due to using inorfil, so caused by moisture in gas
Volume expansion also reduce, as a result, can be improved the shape retention and aftermentioned resistance to explosion-proof of heat-insulated container 1.
In addition, as shown in figure 4, vacuum heat insulation material 8 its substantially central portion (also including central portion) be provided with make it is primary
By being cladded with the hot welding layer snugly into each other of part 15 around the through portion 8a that the bolt 10 of thermal insulation layer installation is inserted, through portion 8a
15a is constituted.
In addition, the present invention is not limited to use the structure of 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 abuts each other is filled with packing materials such as polyurethane.In this configuration, vacuum heat insulation material 8
Each other in being filled the fixed state of material, thus because top and bottom the temperature difference caused by stress deformation, be easy to produce rupture etc..
It is provided with thermal stress dispersion layer 21 between vacuum heat insulation material 8 and a thermal insulation layer 7 as a result, the structure that thermal stress is dispersed
It is particularly effective.
The vacuum heat insulation material 8 constituted using aforesaid way is pasted on a thermal insulation layer 7, and is fixed in vessel shell
Body 6.
In the present embodiment, firstly, in the outermost thermal stress dispersion for constituting the overcoating part 15 of vacuum heat insulation material 8
Layer 21, with the opposite entire surface of a thermal insulation layer 7 (the 2nd thermal insulation layer 7b) on, coating by hot melt the methods of formed bonding
Agent 22, it is integrated in the outer surface bonding vacuum heat insulation material 8 for constituting the thermal insulation board 9 of a thermal insulation layer 7.
Then, it vacuum heat insulation material 8 is formed into integrated thermal insulation board 9 is fixed on vessel shell by above-mentioned using well known method
Then body 6 installs vacuum heat insulation material 8.For example, as shown in Fig. 2, by its through portion is penetrated through from the top of vacuum heat insulation material 8
The bolt 10 of 8a and thermal insulation board 9 is fastened on the nut 6a fixed by welding etc., so as to be fixed on container casing 6.
At this point, in the present embodiment, the head flange 11 of bolt 10 presses the welding layer around the through portion 8a of vacuum heat insulation material 8
15a, vacuum heat insulation material 8 is optionally further secured in thermal insulation board 9 as a result,.
It, can also be between the interface of vacuum heat insulation material 8 and a septum secundum in addition, in order to ensure thermal insulation
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, making
With softness and rich in retractility, fibre diameter is lower than 1 μm of micro- mineral wool.In addition, as long as filling with insulation material 12 is soft
And the material rich in retractility, it is also possible to the material of flexibel polyurethane or the linear expansion coefficient close to container casing 6
Material, such as the phenol formaldehyde foam added with reinforcement material or polyurethane foam etc..
In addition, in the present embodiment, the docking section of vacuum heat insulation material 8 with the thermal insulation board 9 that is constituted a thermal insulation layer 7
The mode that offsets one from another of docking section be arranged.
In addition, being formed in 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 configures.
In the following, the function and effect to above structure are illustrated.
Heat-insulated container 1 is leaned on by being configured at a thermal insulation layer 7 in 6 outside of container casing and being configured at than one time thermal insulation layer 7
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 integrally bonded in a septum secundum by binder 22
The outer surface of thermosphere 7 (the 2nd thermal insulation layer 7b).As a result, when being heat-shrinked on a thermal insulation layer 7 (the 2nd thermal insulation layer 7b), by
This drawing contractility generated can be applied to the overcoating part 15 of vacuum heat insulation material 8.
The thermal contraction for being applied to 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 is applied to the outermost thermal stress dispersion layer 21 for constituting the overcoating part 15 of vacuum heat insulation material 8.
In the present embodiment, thermal stress dispersion layer 21 is made of glass cloth, and linear expansion coefficient is small, thermal contraction is few, and
And resistance to ultralow warm nature and high mechanical strength.Thermal stress dispersion layer 21 resists the heat of a thermal insulation layer 7 (the 2nd thermal insulation layer 7b) as a result,
It shrinks, will not be heat-shrinked substantially, which is dispersed to absorb, be heat-shrinked it will not substantially.
As a result, can strongly inhibit made of thermal stress dispersion layer 21 is integrally laminated be cladded with part 15,
It is cracked on the gas barrier layer 17 being made of aluminium foil.Especially thermal contraction cracking is easy to happen in corner.But pass through thermal stress
Dispersion layer 21 bears and disperses the thermal shrinkage stress for being easy to concentrate on corner, and corner, which is protected, not will receive thermal shrinkage stress
Influence, can effectively inhibit and be cracked caused by the concentration of thermal shrinkage stress.
Therefore, it even if being used for a long time, can also prevent from being cracked on the gas-barrier layer 17 of overcoating part 15, Neng Gouchang
Phase maintains the high thermal insulation of vacuum heat insulation material 8, guarantees 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 small,
It is heat-shrinked less, and to the patience and high mechanical strength of ultralow temperature.Moreover, the pyroconductivity of glass cloth is also low, thermal insulation is high.By
This, is able to suppress because the ultralow temperature for the substance being stored in container casing 6 causes vacuum heat insulation material 8 that low temperature brittleness occurs.Cause
This, is able to suppress cracking caused by the low temperature brittleness of overcoating part 15 and generates, and can guarantee the heat-insulated of heat-insulated container 1 for a long time
Property.
In addition, in the present embodiment, the outermost thermal stress dispersion layer of the overcoating part 15 as vacuum heat insulation material
21, it is integrally laminated to the upper and lower surface of overcoating part 15 respectively.The overcoating part 15 of vacuum heat insulation material 8 is entire at it as a result,
Outer surface, intensity are got higher, and the operation processing etc. when can prevent because of production causes overcoating part 15 to occur being cracked and damaged.Therefore,
It is able to suppress defect ware incidence be easy to produce in the assembling process of heat insulating structure body 2, vacuum heat insulation material 8, is inhibited
Cost increase, while ensuring 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 in addition to forming one in vitro using binder 22
10 inserts are set to the through portion 8a of substantially central portion, and the surrounding mechanical of through portion 8a is fixed on to a thermal insulation layer 7.By
This, even if the bonding of binder 22 is deteriorated because the time deteriorates, or even has arrived vacuum heat insulation material 8 because own wt is easy to fall
Situation, can also this be prevented to fall.Thereby, it is possible to realize that the secure and reliable property such as peeling will not occur for vacuum heat insulation material 8
High structure.
In addition, above-mentioned mechanical fixation is outer around through portion 8a by utilizing the head flange 11 of bolt 10 to press
Cover part 15 it is snugly into each other made of welding layer 15a carry out.Thereby, it is possible to not damage core material 14 of vacuum heat insulation material 8
The fixed vacuum heat insulation material 8 in 15 ground of overcoating part divided, heat-proof quality decline and overcoating part 15 caused by preventing overcoating part 15 from damaging
Deterioration, so as to guarantee heat-proof quality for a long time.
Moreover, in the present embodiment, being set to a thermal insulation layer 7 of 6 outer surface of container casing of heat-insulated container 1, being
By overlap on the 1st thermal insulation layer 7a the 2nd thermal insulation layer 7b and constitute.It is heat-insulated using the 1st thermal insulation layer 7a and the 2nd as a result,
The ultralow temperature leakage of the substance being stored in container casing 6 can be greatly decreased to vacuum heat insulation material 8 in layer 7b.It is tied
Fruit is the low temperature brittleness that can effectively inhibit the overcoating part 15 of vacuum heat insulation material 8.Vacuum heat insulation material 8 can be tieed up as a result,
Original high heat-proof quality is held, and can guarantee high thermal insulation 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, and air layer is formed between the two.As a result, by breaking off the continuous of substance
Property (the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b is integrated, constitute the 1st thermal insulation layer 7a, the 2nd thermal insulation layer 7b substance, for example foam
Styrene from 6 side of container casing continuously to vacuum heat insulation material 8 when continuity), the leakage rate of ultralow temperature, energy can be reduced
The low temperature brittleness of enough overcoating parts 15 for more effectively inhibiting vacuum heat insulation material 8.
In addition, as has already been discussed, the heat of the vacuum heat insulation material 8 in present embodiment in heat insulating structure body 2 passes
Conductance λ is compared with the pyroconductivity for constituting the foamed styrene of the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b of a thermal insulation layer 7, greatly
About low 15 times or so.The heat insulation for adding vacuum heat insulation material 8 as a result, and only by the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b
Composition is compared, its heat-proof quality can be greatly improved.
Moreover, vacuum heat insulation material 8 gives full play to the heat that its high heat-proof quality blocks outside air, make vacuum heat-insulation
The inside of material 8, the atmosphere temperature that the once part of thermal insulation layer 7 is arranged decline to a great extent.Thereby, it is possible to relatively improve one
Itself possessed heat insulation of secondary thermal insulation layer 7, in addition high heat insulation possessed by vacuum heat insulation material 8 itself, it can
Greatly improve 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 of foamed styrene.It comes from as a result,
The conduction of the ultralow temperature of the substances 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.As a result, with a thermal insulation layer 7
The vacuum heat insulation material 8 of (the 2nd thermal insulation layer 7b) contact, also including adjacent vacuum heat insulation material 8, substantially its is all
Temperature Distribution is substantially uniform.Thermal expansion as a result, in vacuum heat insulation material 8, because being cladded with part 15 caused by temperature distributing disproportionation
Difference is also inhibited, and can also prevent cracking caused by the thermal expansion difference of overcoating part 15 itself, so can be more long-term
Guarantee high thermal insulation.
In other words, since vacuum heat insulation material 8 is configured at the outer surface of a thermal insulation layer 7, so from substances such as LNG to true
The distance of empty heat-barrier material 8 is essentially identical in whole region.Therefore, from substances such as LNG to the ultralow temperature of vacuum heat insulation material 8
It conducts, that is, 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 it is primary
The Temperature Distribution of the one side of thermal insulation layer 7 (the 2nd thermal insulation layer 7b) contact is also of substantially equal.Thereby, it is possible to inhibit vacuum heat insulation material 8
The temperature distributing disproportionation of overcoating part 15 can be greatly reduced and tortoise occurs to inhibit the difference of the telescopic level of overcoating part 15
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, so being able to suppress
The surface temperature of thermal insulation layer 7 generates difference because of environmental condition, can further suppress contacted with a thermal insulation layer 7 it 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 the mutual docking section of vacuum heat insulation material 8 is made of micro- mineral wool,
It is soft and rich in retractility.Even if generating slightly flexible on vacuum heat insulation material 8 because of the changes in temperature of outside air as a result, fill out
Filling heat-barrier material 12 can also stretch therewith, thus can also prevent because vacuum heat insulation material 8 it is flexible suffer restraints caused by it is outer
It covers part 15 and crack failure etc. occurs, can ensure higher heat-proof quality for a long time.
In addition, vacuum heat insulation material 8 is ventilative by having using 15 vacuum sealing of overcoating part being made of laminated film
Property core material 14, 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 inhibit
Heat leak caused by sealing fin 13 by vacuum heat insulation material 8.Therefore, it can effectively play and make full use of vacuum insulation material
The heat insulation of material 8 and the effect for reducing the atmosphere temperature of 7 setting unit of thermal insulation layer.Thereby, it is possible to give full play to make
With the heat insulation of vacuum heat insulation material 8, thermal insulation is greatly improved.
Fig. 5 is the explanatory diagram for indicating thermal simulation result in the 1st embodiment of the invention, and dotted line indicates existing thermal insulation board
It is configured at the position of the vacuum heat insulation material in figure, the Low Temperature Thermal of LNG is moved to the characteristic of the existing type of outside air, click and sweep
Line indicates the characteristic of the structure of present embodiment.
As can be seen from FIG. 5, in the structure of present embodiment, according to the 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.Moreover, 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 heat insulation of thermal insulation layer 7 of the decline bring of atmosphere temperature improves.
Fig. 6 is the figure for indicating the experimental example of first embodiment of the present invention.
In Fig. 6, comparative example 1 is the structure that vacuum heat insulation material is not configured, is only formed by thermal insulation layer.In experimental example 1
In, measurement is passed with heat of the thickness of thermal insulation layer identical with comparative example in the structure that outer wall side is provided with vacuum heat insulation material
Pass the variation of coefficient.In experimental example 2, in addition to other than outer wall side is provided with vacuum heat insulation material, identical with comparative example 1
In the case where heat transfer coefficient, which kind of degree the thickness for measuring thermal insulation layer is thickened to.
As condition when measuring these data, the temperature in tank is -160 DEG C, and external air temperature is 25 DEG C.
In addition, using foamed styrene as a thermal insulation layer 7.
In experimental example 1, the thickness and comparative example 1 of entire thermal insulation layer are same, measure 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 going for 1 same heat-proof quality of comparative example, entire thermal insulation layer is measured
Increase and which kind of degree be as thin as.In the case, it is known that be compared with comparative example 1, can reduce by 37% thickness.
Like this, structure according to the present embodiment can substantially be reduced by the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b structure
At a thermal insulation layer 7 overall thickness.For example, it is assumed that the plate thickness of vacuum heat insulation material 8 is 20mm, it 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 being used for the structure of present embodiment using the boil-off gas of LNG as the heat-insulated of the LNG tank ship of fuel etc.
In container (tank), the usage amount of LNG can be controlled.Economy improves as a result, and liquefies again by the boil-off gas of LNG
In the LNG tank ship of mode, the energy loss re-liquefied for this can be reduced.
In addition, the core material 14 by using inorfil as vacuum heat insulation material 8, it can be for prolonging because of external fire
It burns to heat-insulated container 1 and realizes the flame retardancy of heat-barrier material.In addition, even if moisture remains in the overcoating part 15 of vacuum heat insulation material 8
In, core material 14 is also able to suppress because the moisture expansion itself deforms so as to cause vacuum heat insulation material 8.Thereby, it is possible to anti-
When carrying out warm water cleaning, vacuum insulation material 8 is big when only periodically carrying out the maintenance such as warm water cleaning as LNG heat-insulated container etc.
Width dilatancy causes to be cladded with to generate on part 15 at it because of the substantially thermal expansion deformation of vacuum heat insulation material 8 itself to be cracked, energy
Enough thermal insulations for more reliably guaranteeing heat-insulated container 1.
In addition, used as core material 14 by being sintered to glass fibre, thus with phase the case where not being sintered
Than can substantially inhibit change in size.
For example, size distortion becomes 2 times in the case where core material 14 that use is not sintered but is formed with centrifugal process
More than, thickness is substantially thickened to 5~6 times.On the other hand, structure according to the present embodiment can inhibit size distortion
1.2 times or so, most 1.5 times hereinafter, so be able to suppress disadvantage caused by because size distortion occurs in the inner wall of tank and outer wall
End.
In addition, in the present embodiment, core material 14 is formed with centrifugal process, but it is such to be also able to use such as copy paper, uses
By the core material 14 of the core material dehydration containing moisture manufacturing paper with pulp method and being formed.
Using core material 14 formed by method of manufacturing paper with pulp, disperse fiber by dissolving in water it in advance,
Then it is dehydrated, size distortion when being depressurized relative to atmospheric pressure is few, and thickness is thinning.Therefore, even if because of cracking etc.
And in the case where rupturing, also it is able to suppress the drawbacks of generating because of size distortion.
In addition, according to the present embodiment, vacuum heat insulation material 8 is configured to a column in the outermost wall side of heat-insulated container 1,
So not needing to configure two column thermal insulation boards as the prior art and be overlapped 8 major part of vacuum heat insulation material a large amount of true like that
Empty heat-barrier material 8, so required lot of materials and cost can be reduced.
(the 2nd embodiment)
Then, illustrate the 2nd embodiment of the invention.
The structure of 2nd embodiment is same as structure shown in FIG. 1 to FIG. 4, but different in terms of following two: 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；Even alternatively, identical foaming
Styrene also makes its foam density different, and the heat-proof quality of the 2nd thermal insulation layer 7b and the heat-proof quality of the 1st thermal insulation layer 7a are same
Deng or it is higher than its.
Such as can enumerate with flowering structure: 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.
The 2nd thermal insulation layer 7b high using the heat-proof quality being located on the outside of it as a result, can be by the 1st of 6 side of container casing the
The atmosphere temperature of thermal insulation layer 7a setting unit inhibits lower.Thereby, it is possible to improve the heat insulation of the 1st thermal insulation layer 7a, accordingly
Ground inhibits the heat leak to vacuum heat insulation material 8, inhibits the low temperature brittleness of overcoating 15 temperature of part, further increases reliability.
Moreover, by the way that heat-proof quality is set to more outward wall side than the vacuum heat insulation material 8 of the 2nd thermal insulation layer 7b high
Position can be improved the heat-proof quality of the 2nd thermal insulation layer 7b, and then also can be improved the heat-proof quality of the 1st thermal insulation layer 7a.
(the 3rd embodiment)
Then, illustrate the 3rd embodiment of the invention.
The structure of 3rd embodiment is identical as structure shown in FIG. 1 to 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, compared to its opposite side and outside 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 uses and is dispersed with aluminium foil to thermal stress
Layer 21 inside laminated film applied after material.Moreover, the material with outside air contact side of opposite to that side
Material is using the material after being applied by laminated film of the aluminium-vapour deposition to 21 inside of thermal stress dispersion layer.
In addition, in the thermal stress dispersion layer 21 with the overcoating part 15 of the 2nd thermal insulation layer 7b contact side of vacuum heat insulation material 8
The laminated film of side uses multilayered structure.The thermal stress point with the overcoating part 15 of outside air contact side of opposite to that side
The laminated film for dissipating 21 inside of layer uses single layer structure.
Thereby, it is possible to further increase the low temperature resistant embrittlement of the overcoating part 15 as low temperature side of vacuum heat insulation material 8
Property, low temperature brittleness can be effectively inhibited.The overcoating part 15 of opposite to that side can using less expensive material or
Even the identical material of person is also more marginally constituted, reliability can be improved with low cost.
In addition, be located at outer wall side aluminium-vapour deposition film with aluminium foil compared with heat-proof quality height, so being able to suppress outside air
The entrance of heat can will maintain more low temperature in tank.
(the 4th embodiment)
Then, the 4th embodiment of the invention is illustrated.
Fig. 7 is the figure for indicating the structure of the heat insulating structure body 102 of heat-insulated container 1 of fourth embodiment of the present invention.
In the 4th embodiment, it is arranged in the more lateral of the 1st embodiment~the 3rd embodiment vacuum heat insulation material 8
There are thermal insulation layer 23 three times.Thermal insulation layer 23 can be using the 1st thermal insulation layer 7a and the 2nd thermal insulation layer 7b phase with a thermal insulation layer 7 three times
Same material is formed, and can also be formed with different materials.
According to the structure of the 4th embodiment, other than the heat insulation of thermal insulation layer 23 three times, additionally it is possible to reduce vacuum heat-insulation
The temperature of the outside air side of material 8 is further reduced the heat leak across overcoating part 15, can further enhance thermal insulation
Energy.
(the 5th embodiment)
Then, illustrate the 5th embodiment of the invention.
Fig. 8 is the figure for indicating the structure of the heat insulating structure body 202 of heat-insulated container 1 of fifth embodiment of the present invention.
In the present embodiment, by the double-deck configuration of the 1st embodiment~the 4th embodiment vacuum heat insulation material 8, by it
Outer peripheral edge has height poorly to overlap.
According to above-mentioned this structure, the gap generated in the mutual docking section of vacuum heat insulation material 8 can be eliminated, is substantially dropped
The low heat-insulated loss generated in the part, while can be improved the leak tightness between vacuum heat insulation material 8 and container casing 6.Cause
This, can further increase 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.
In addition, in the present embodiment, including double-layer vacuum heat insulated material 8, still, for example, by by vacuum heat insulation material
The end shape of 8 outer peripheral edge forms difference of height, same as docking section shown in Fig. 8, can make adjacent vacuum heat insulation material 8
Docking section be formed as the different shapes for having difference of height in outer peripheral edge.Like this, even the vacuum heat insulation material 8 of single layer,
Also it is mobile to be able to suppress the heat from docking section.
(the 6th embodiment)
Then, illustrate the 6th embodiment of the invention.
In the 6th embodiment, it can more reliably inhibit 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.That is, 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 authorized pressure or more, by residue gas
The blast resistance construction body A that body is discharged to outside, to improve safety.
In addition, blast resistance construction body A is identical as the 1st embodiment~the 5th embodiment with the structure of outer portion and effect, it is right
The identical part of 1 embodiment of Yu Yu~the 5th embodiment structure marks identical symbol, and 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,
Structural example 1: make residual gas to external escape to alleviate the structure that overcoating part 15 expands；With
Structural example 2: the adsorbent 20 enclosed inside overcoating part 15 together with core material 14 is the change of chemisorption residual gas
Learn absorbent-type, will not due to adsorbing residual gas the non-fever type to generate heat or chemisorption type and non-heat generation structure.
Using Fig. 9 A and Fig. 9 B, illustrate the example of the blast resistance construction body A of structural example 1.
Fig. 9 A and Fig. 9 B are the figures for indicating an example structure of blast resistance construction body A of sixth embodiment of the present invention.
It is representational to enumerate as shown in fig. 9 a and fig. 9b unidirectional respectively as the blast resistance construction body A of structural example 1
Valve 24 and strength reduction position 26.
Fig. 9 A indicates the example for the blast resistance construction body A being made of check valve 24.Check valve 24 have it is closed be set to it is overcoating
The lid-like of valve opening 25 in a part of part 15.Valve opening 25 is arranged with penetrating through the mode inside and outside overcoating part 15, the list of cover shape
It is made of to valve 24 rubber elastomeric material.
In general, valve opening 25 is closed by check valve 24, so substantially preventing outside air from invading the inside for being cladded with part 15.I.e.
Make the temperature change because of surrounding be cladded with part 15 to shrink, the internal diameter of valve opening 25 changes therewith, since check valve 24 is by elastic material structure
At so also can closed valve opening 25 well.In contingency residual gas in the case where the internal expansion of overcoating part 15, with interior
The raising of pressure, check valve 24 are easy to fall off from valve opening 25, and residual gas is escaped to outside.
In addition, Fig. 9 B indicates the example for the blast resistance construction body A being made up of setting strength reduction position 26.Strength reduction
At the sealing mutual welding position of fin 13, the position 26a by reducing a part of welding area is constituted at position 26.
In the example at the strength reduction position 26, the inside (14 side of core material) in the welding position 26a of fin 13 is sealed
It is not fused.Therefore, the welding position of other sealing fins 13 of the welding area ratio in the 26a of position is small, exists in contingency residual gas
In the case where overcoating 15 internal expansion of part, because the pressure that the raising of internal pressure generates is easy to concentrate on strength reduction position 26.Then,
The position 26a for reducing the welding area of welding layer 15a is peeled off, and residual gas is escaped to outside.
In addition, strength reduction position 26 is not limited to the structure of subcontract welding area shown in Fig. 9 B, it is also possible to
Welding area is identical, and part reduces the structure of heat seal strength.For example, it is also possible to when heat welded seals fin 13, only to one
Divide the heat for reducing and applying, reduces the welding degree at welding position.Alternatively, strength reduction position 26 can also be set to sealing fin
Other than 13 welding position.For example, it is also possible to be formed between the hot welding layer 18 and gas-barrier layer 17 for constituting overcoating part 15
Make the position that stacking strength locally reduces, to constitute strength reduction position 26.
Alternatively, it is also possible to pass through the material that a part of material of hot welding layer 18 uses heat seal strength lower than other positions,
Form strength reduction position 26.For example, as described above, as hot welding layer 18 can it is preferable to use low density polyethylene (LDPE)s, but
In a part of hot welding layer 18, it is poly- to benzene that high density polyethylene (HDPE), ethylene-vinyl alcohol copolymer or amorphous also can be used
Naphthalate etc..The heat seal strength of these high molecular materials is lower than low density polyethylene (LDPE), so strong suitable for being formed
Degree reduces position 26.
In addition, the forming method as strength reduction position 26, can also use and locally reduce each hot welding layer 18
The structure of the thickness at welding position；The a part of the binder for keeping adhesion strength small 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 locally removed, directly will
The structure etc. of the thermal welding 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 implementation
In the case where mode, when vacuum heat insulation material 8 is exposed in rugged environment, whens internal residual gas expansion etc., check valve
24 are detached from from valve opening 25, and the excessive bulbs of pressure are discharged from strength reduction position 26 to outside, can be effectively prevented from vacuum
The deformation of heat-barrier material 8.Therefore, it can be improved the explosion-proof of vacuum heat insulation material 8, improve the safety of heat-insulated container 1.
In addition, in Fig. 9 A and Fig. 9 B of structure for indicating present embodiment, and not shown it is set to 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 structural example 2, the adsorption material being made of above-mentioned ZSM-5 zeolite is enumerated
Material.The ZSM-5 zeolite for constituting adsorbent material is the adsorbent with chemisorption.Therefore, even if occurring in temperature
Such various environmental factors are risen, also can substantially prevent the gas adsorbed to be released again.It is flammable in processing as a result,
Property fuel when, even if because certain reason adsorbent 20 adsorb imflammable gas, gas will not be by temperature later
Rising etc. is influenced and is discharged again.As a result, the explosion-proof of vacuum heat insulation material 8 can be further increased.
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 including core material 14, combustible material, energy are not used in the inside of vacuum heat insulation material 8
Enough further increase explosion-proof.
Like this, if adsorbent 20 is chemisorption type, compared with physisorption type, the residual gas of absorption is not allowed
It is easily detached from, so the vacuum degree inside vacuum heat insulation material 8 can be kept well.Moreover, 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 the material of both non-heat generation material, flame-retardant materials or satisfaction, even if because
The foreign matters such as the overcoating damage of part 15 invade inside it, are also avoided that the fever of adsorbent 20, burning.It is true thereby, it is possible to further increase
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
Improve thermal insulation, and inhibit because vacuum heat insulation material 8 overcoating part 15 thermal contraction cracking caused by heat-proof quality decline, by
This can guarantee high thermal insulation for a long time.Certainly, in the range for reaching the object of the invention, this structure is able to carry out numerous variations.
It instantiates for example with binder 22 is by vacuum heat insulation material 8 and a thermal insulation layer 7 bonds and integrally fixed knot
Structure, but can also be when the thermal insulation board 9 for constituting a thermal insulation layer 7 forms, by the integrally formed fixation of vacuum heat insulation material 8.
In addition, in embodiments, instantiate and bonded vacuum heat insulation material 8 with binder 22, and and with utilizing spiral shell
The head flange 11 of bolt 10 is mechanically fixed, 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, the thermal stress dispersion layer 21 for instantiating vacuum heat insulation material 8 is set to the knot on the two sides of vacuum heat insulation material 8
Structure, but as long as primary thermal insulation layer 7 is at least set to stationary plane side.In the case, although being difficult to expect by mentioning
The intensity of the upper and lower surface of high vacuum insulation material 8 prevents poor quality effect to reduce, but sufficiently achieves of the invention
Expected purpose.
In addition, citing illustrates glass cloth, as long as but can make a thermal insulation layer 7 as thermal stress dispersion layer 21
Convergent force dispersion is pulled caused by thermal contraction, can be any material.For example, being also able to use other than glass fibre
The stronger carbon fiber of small and intensity, alumina fibre, silicon carbide fibre, aramid fiber, polyamide from linear expansion coefficient
The material selected in fiber and polyimide fiber.
Thermal stress dispersion layer 21 is laminated to the overcoating part 15 of vacuum heat insulation material 8 to which composition is outer in addition, also illustrating
Cover the outermost example of part 15, but the thermal stress dispersion layer 21 can also be used as separate part, using binder and vacuum every
Both warmware 8 and a thermal insulation layer 7 bonding form one.
In addition, in embodiments, illustrating the example that heat-insulated container 1 is used as to the tank of LNG tank ship etc., but the present invention is simultaneously
Example without being limited thereto is also possible to that the heat-insulated container of LNG tank of land etc. or the low temperature in medical treatment and industry is arranged in
Save the heat-insulated container of container etc..The substance saved may not be LNG, but liquid hydrogen etc., as long as 100 DEG C lower than room temperature
More than, it can be any substance.
As described above, the heat-insulated container of embodiment of the present invention is the object for being kept for 100 DEG C lower than room temperature of temperature or more
The heat-insulated container of matter comprising: container casing；With the outside for being configured at container casing, and it is at least configured at container casing side
A thermal insulation layer.And, further includes: it is configured at the position that than one time thermal insulation layer leans on external side, and including with gas permeability
Core material and vacuum sealing core material 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 this structure, poor a, septum secundum is heat-shrinked even if existing between thermal insulation layer and vacuum heat insulation material at one time
The thermal shrinkage force of thermosphere is applied to the overcoating part of vacuum heat insulation material, which is also dispersed by thermal stress dispersion layer, can
The overcoating part of vacuum heat insulation material is inhibited to cause to generate cracking etc. because being heat-shrinked difference.Thereby, it is possible to maintain vacuum heat insulation material former
This high heat-proof quality, can guarantee the heat-proof quality of heat-insulated container well for a long time.
In addition, thermal stress dispersion layer can also be made of glass cloth.
According to this structure, it also adds outside heat-proof quality possessed by glass cloth, overcoating part can be prevented because being heat-shrinked
And be cracked, and improve the thermal insulation of overcoating part itself, it is also able to suppress the low temperature brittleness of overcoating part itself, is improved reliable
Property, guarantee to longer-term 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
It contacts the face of side and is formed as one and constitutes.
According to this structure, only using as increased costs the reason of glass cloth contact side as with thermal insulation layer
One side, be able to suppress its usage amount.Thereby, it is possible to control increased costs, while it can guarantee heat-insulated container well for a long time
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 this structure, the outermost layer of its upper and lower surface of vacuum heat insulation material becomes the high thermal stress dispersion of intensity
Layer.There is cracking, breakage on overcoating part in operation processing when thereby, it is possible to prevent because of production, inhibits vacuum heat insulation material
Defect ware incidence inhibits increased costs, while can guarantee the heat-proof quality of heat-insulated container well for a long time.
Alternatively, it is also possible to use core material of the inorfil as vacuum heat insulation material.
According to this structure, even if moisture remains in the overcoating part of vacuum heat insulation material, can also prevent core material because
The moisture and expand and deformed so as to cause vacuum heat insulation material itself.Even if carrying out temperature regular as LNG heat-insulated container etc.
When the maintenances such as water cleaning, there are some moistures to remain in overcoating part, can also prevent vacuum heat insulation material dilatancy, to prevent
Because the thermal expansion deformation of vacuum heat insulation material itself causes overcoating part to be cracked.It is heat-insulated thereby, it is possible to more reliably guarantee
The thermal insulation of container.
In addition, vacuum heat insulation material also can have blast resistance construction.
According to this structure, even if remaining several moistures and air in vacuum heat insulation material, because of the moisture or air etc.
It expands, when the bulbs of pressure become specified value or more, the bulbs of pressure can be also discharged from blast resistance construction part to outside.
Thereby, it is possible to prevent from continuing the explosive destruction of expansion generation, it is ensured that the safety of heat-insulated container.
There is through portion alternatively, it is also possible to vacuum heat insulation material, and be also mechanically fastened across through portion in a septum secundum
Thermosphere.
According to this structure, vacuum heat insulation material is using forming one with a thermal insulation layer plus by the way of being mechanically fixed
Body.Even if fixed force of the vacuum heat insulation material on a thermal insulation layer dies down as the time deteriorates as a result, also can reliably prevent
Only vacuum heat insulation material peeling etc., realizes high reliability.
Alternatively, it is also possible to further include the bolt with flange part, it is snugly into each other that overcoating part is formed around through portion
Welding layer is pressed by welding layer by the flange part of bolt, and vacuum heat insulation material is fixed in a thermal insulation layer.
According to this structure, the overcoating part of core material part can not be damaged fixed vacuum heat insulation material.Thereby, it is possible to
The deterioration for preventing heat-insulated decline and overcoating part caused by overcoating part damage, can guarantee heat-proof quality for a long time.
Industrial availability
As described above, can have following special effect according to the present invention: being able to suppress the overcoating of vacuum heat insulation material
Heat-proof quality declines caused by the thermal contraction cracking of part.Therefore, the present invention can be widely used as the extremely low temperature using LNG as representative
The heat-insulated container of storage and the transport of substance, it is highly useful.
Description of symbols
1 heat-insulated container
2,102,202 heat insulating structure body
3 supporting masses
4 hulls
5 lids
6 container casings
6a nut
7 thermal insulation layers
The 1st thermal insulation layer of 7a
The 2nd thermal insulation layer of 7b
7c metal mesh
8 vacuum heat insulation materials
8a through portion
9 thermal insulation boards
10 bolts
11 head flanges
12 filling with insulation material
13 sealing fins
14 core materials
15 overcoating parts
15a welding layer
The 1st protective layer of 16a
The 2nd protective layer of 16b
17 gas barrier layers
18 hot welding layers
20 adsorbents
21 thermal stress dispersion layers
22 binders
23 thermal insulation layers three times
24 check valves
25 valve openings
26 strength reduction positions
The position 26a
A blast resistance construction body.
Claims (6)
1. a kind of heat-insulated container, it is characterised in that:
For keeping 100 DEG C lower than room temperature of temperature or more of substance comprising:
Container casing；
It is configured at the outside of the container casing, and is at least configured at a thermal insulation layer of the container casing side；
Including with gas permeability core material and vacuum sealing described in core material overcoating part vacuum heat insulation material；With
The thermal stress dispersion layer being configured between the vacuum heat insulation material and a thermal insulation layer,
The thermal stress dispersion layer is made of glass cloth,
The vacuum heat insulation material by the thermal stress dispersion layer be laminated to the overcoating part at least with it is described primary heat-insulated
The face of layer contact side is simultaneously formed as one and constitutes, and is fixed in the vessel shell and being pasted on a thermal insulation layer
Body.
2. heat-insulated container as described in claim 1, 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 overcoating part outermost layer.
3. heat-insulated container as described in claim 1, it is characterised in that:
Use inorfil as the core material of the vacuum heat insulation material.
4. heat-insulated container as described in claim 1, it is characterised in that:
The vacuum heat insulation material has blast resistance construction.
5. heat-insulated container as described in any one of claims 1 to 4, it is characterised in that:
The vacuum heat insulation material has through portion, and is also mechanically fastened across the through portion in described primary heat-insulated
Layer.
6. heat-insulated container as claimed in claim 5, it is characterised in that:
It further include the bolt with flange part,
Overcoating part welding layer snugly into each other is formed around the through portion,
It is pressed by the welding layer by the flange part of the bolt, the vacuum heat insulation material is fixed in described primary
Thermal insulation layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-168148 | 2014-08-21 | ||
| JP2014168148 | 2014-08-21 | ||
| PCT/JP2015/004119 WO2016027460A1 (en) | 2014-08-21 | 2015-08-19 | Heat insulation container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106536383A CN106536383A (en) | 2017-03-22 |
| CN106536383B true 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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| WO2016190176A1 (en) * | 2015-05-22 | 2016-12-01 | 旭硝子株式会社 | Layered heat insulator having through hole, and heat insulating structure |
| JP7257730B2 (en) * | 2016-03-31 | 2023-04-14 | 清水建設株式会社 | Cryogenic liquid storage tank |
| KR101844840B1 (en) * | 2017-04-04 | 2018-04-03 | (주)동성화인텍 | Insulation structure of 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 |
| FR3087873B1 (en) * | 2018-10-25 | 2020-10-02 | Gaztransport Et Technigaz | WATERPROOF AND THERMALLY INSULATED TANK |
| CN111743379B (en) * | 2019-03-28 | 2022-05-03 | 九阳股份有限公司 | Cooking utensil and stir-fry formula machine of cooking |
| FR3094450B1 (en) * | 2019-04-01 | 2021-06-25 | Gaztransport Et Technigaz | Sealed and thermally insulating tank |
| CN112373051B (en) * | 2020-11-13 | 2022-05-06 | 航天特种材料及工艺技术研究所 | Profile matching laying method for thermal insulation layer |
| JP2022092331A (en) * | 2020-12-10 | 2022-06-22 | アルバック・クライオ株式会社 | Cryopump and heat insulation structure for cryopump |
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| CN2731243Y (en) * | 2003-10-23 | 2005-10-05 | 松下电器产业株式会社 | Vacuum thermal-insulation material, freezing and low temperature equipment using the same |
| CN103153776A (en) * | 2010-07-30 | 2013-06-12 | 三星重工业株式会社 | Cargo hold of a vessel for transporting liquefied gas |
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| JP2644838B2 (en) * | 1988-07-29 | 1997-08-25 | 松下冷機株式会社 | Manufacturing method of heat insulator |
| JP3572990B2 (en) * | 1999-04-12 | 2004-10-06 | いすゞ自動車株式会社 | Thermal insulation wall member and method of manufacturing the same |
| JP2008275109A (en) * | 2007-05-01 | 2008-11-13 | Kurabo Ind Ltd | Vacuum heat insulating material |
| JP5452969B2 (en) * | 2009-04-13 | 2014-03-26 | 川崎重工業株式会社 | Thermal insulation structure of low temperature tank and thermal insulation construction method |
| JP2015525860A (en) * | 2012-08-06 | 2015-09-07 | ティアイ マリン コントラクティング アクティーゼルスカブ | Insulating panel manufacturing method |
| JP6222711B2 (en) * | 2012-08-10 | 2017-11-01 | フラウンホッファー−ゲゼルシャフト ツァー フェーデルング デア アンゲバンテン フォルシュング エー ファー | Autostereoscopic screen and method for simultaneous playback of three or more different videos and use thereof |
| JP2014129894A (en) * | 2012-12-28 | 2014-07-10 | Hitachi Appliances Inc | Air conditioner |
| JP6390009B2 (en) * | 2013-03-01 | 2018-09-19 | パナソニックＩｐマネジメント株式会社 | Insulated container |
-
2015
- 2015-08-19 WO PCT/JP2015/004119 patent/WO2016027460A1/en active Application Filing
- 2015-08-19 JP JP2016543818A patent/JP6620315B2/en not_active Expired - Fee Related
- 2015-08-19 CN CN201580038380.0A patent/CN106536383B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731243Y (en) * | 2003-10-23 | 2005-10-05 | 松下电器产业株式会社 | Vacuum thermal-insulation material, freezing and low temperature equipment using the same |
| CN103153776A (en) * | 2010-07-30 | 2013-06-12 | 三星重工业株式会社 | Cargo hold of a vessel for transporting liquefied gas |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6620315B2 (en) | 2019-12-18 |
| JPWO2016027460A1 (en) | 2017-06-01 |
| WO2016027460A1 (en) | 2016-02-25 |
| CN106536383A (en) | 2017-03-22 |
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