CN107461604B

CN107461604B - Heat-insulated container with vacuum heat-insulation component

Info

Publication number: CN107461604B
Application number: CN201710748748.3A
Authority: CN
Inventors: 宫地法幸; 宫本健太; 上门一登; 药师秀一; 神前明生
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2013-09-12
Filing date: 2014-09-11
Publication date: 2019-07-30
Anticipated expiration: 2034-09-11
Also published as: CN104968584B; WO2015037247A1; CN107461604A; CN107559585A; KR20160056847A; JPWO2015037247A1; JP6496918B2; JP2018122935A; CN104968584A; JP6435517B2

Abstract

Heat-insulated container include: it is internal have 100 DEG C lower than room temperature or more at a temperature of keep fluid fluid retaining space container body；Heat insulating structure body；With the container casing in the outside that the heat insulating structure body is arranged in.The heat insulating structure body is the multilayer structure making for including first thermal insulation layer with the second thermal insulation layer in the outside that the first thermal insulation layer is arranged in.Second thermal insulation layer is provided with thermal insulation board (10).Vacuum heat-insulation component (20A) is completely covered using the foamed resin layer (11) being at least made of polystyrene in the thermal insulation board (10).

Description

Heat-insulated container with vacuum heat-insulation component

This case be the applying date be September in 2014 11, application No. is 201480007906.4 (international application no PCT/ JP2014/004724), it is entitled " with vacuum heat-insulation component heat-insulated container " patent application divisional application.

Technical field

The present invention relates to the heat-insulated containers with vacuum heat-insulation component, in particular to holding liquefied natural gas or hydrogen Deng lower than being the heat-insulated container of the substance of fluid at a temperature of 100 DEG C of room temperature or more.

Background technique

The imflammable gas such as natural gas or hydrogen are gas at normal temperature, therefore liquefy and keep in its storage and conveying In heat-insulated container.The heat-insulated container generally includes the heat-insulated double container of inside groove (the first slot) and outer groove (the second slot).

Keep the typical example of the heat-insulated container of liquefied natural gas (LNG) can when illustrating natural gas as imflammable gas To enumerate the LNG storage tank of land setting or the tank etc. of LNG conveying tank car (ship).These LNG tanks are needed at 100 DEG C lower than room temperature Above temperature (temperature of LNG is usually -162 DEG C) keeps LNG, so needing to improve heat-proof quality as far as possible.

But one kind as the heat-barrier material with higher heat-proof quality, it is known that constituted using by mineral-type materials Threadiness core material vacuum heat-insulation component.General vacuum heat-insulation component can be enumerated bag-shaped outer with gas barrier property The inside of covering material is to depressurize the structure that air-tight state encloses the core material.As the application field of the vacuum heat-insulation component, Such as the household appliances such as home-use freezer, business refrigerating equipment or the thermal wall of house can be enumerated etc..

In addition, recently, also studying the further increasing for heat-proof quality of vacuum heat-insulation component.Such as the application Shen Ask someone to propose the vacuum heat-insulation component such as flowering structure as shown in Patent Document 1: hot melt is connected to (overcoating as external cladding material Part) multilayer laminate film position be the sealing with multiple thinner wall sections and thick wall portion.As a result, with only be arranged thinner wall section knot Structure is compared, and is able to suppress outside air and is passed through the inside for entering external cladding material at any time.Therefore, true with above-mentioned sealing Empty heat insulating component can realize excellent heat-proof quality for a long time.

If this vacuum heat-insulation component is applied to the heat-insulated containers such as LNG tank, can expect effectively to inhibit to heat-insulated The entrance of heat in container.LNG tank, as long as being able to suppress the entrance of heat, it will be able to effectively mitigate the production of boil-off gas (BOG) It is raw, it can be effectively reduced the spontaneous vaporization rate (evaporation rate, BOR) of LNG.It is applied to the example of LNG tank as vacuum heat-insulation component Son, such as the heat insulation structural of cryogenic tank disclosed in patent document 2 can be enumerated.

As shown in figure 24, in patent document 2, the outside of tank wall 501 is configured with the thermal insulation board 502 of a several thousand sheets.It is heat-insulated Plate 502 is made of inner plating 503 and lamina rara externa 504.Inner plating 503 is made of phenol formaldehyde foam, and lamina rara externa 504 utilizes hard polyurethane It is constituted around ester foam 504b wrapped vacuum heat insulating component 504a.In other words, vacuum heat-insulation component 504a is poly- using hard Urethane foam 504b is adhesively fixed and is configured adjacently, and integrated thermal insulation layer (outer layer is formed on phenol formaldehyde foam (inner plating 503) Plate 504).

In the outside of the mutual seam 506 of thermal insulation board 502, additional thermal insulation board is configured in a manner of covering the seam 506 505.Additional thermal insulation board 505 is with thermal insulation board 502 also with hard polyurethane foams 505b wrapped vacuum heat insulating component 505a's Around constitute.

In said structure, vacuum heat-insulation component 504a is integrated with hard polyurethane foams 504b and form lamina rara externa 504, vacuum heat-insulation component 505a are also integrated with hard polyurethane foams 505b and form additional thermal insulation board 505.

Existing technical literature

Patent document

Patent document 1:WO2010/029730A1 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2010-249174 bulletin

Summary of the invention

Subject to be solved by the invention

Herein, the external cladding material as vacuum heat-insulation component is made using the laminated body including hot welding layer and gas barrier layer Aluminium-vapour deposition layer can be enumerated for representative gas barrier layer.As long as such laminated body is applied to the fields such as household appliances or house, Just there is effective durability.Unlike this, such as in fields such as LNG tanks, it is possible to be exposed to than household appliances or house etc. In the harsh environment in field, in such harsh environment, vacuum heat-insulation component, especially external cladding material require higher Durability.

For example, in the case where LNG transfer pot ship (tanker), based on " international bulk ships carrying liquefied gases construction And equipment Regulation " (IGC Code), even if requiring the hull damage in tank ship for vacuum heat-insulation component, seawater enters inside In the case where the performance that is also resistant to.Such as the salt such as sodium chloride contained in seawater are known as the corrosion promotion substance of aluminium. Therefore, when vacuum heat insulating component exposes in the seawater, external cladding material (laminated body comprising gas barrier layer) is possible to corrode.Separately Outside, if external cladding material corrodes and broken bag or breakage, subtracting for the inside of vacuum heat-insulation component not only cannot again be maintained Pressure condition, it is also possible to which the seawater inside entering corrodes core material with core material contact due to.

But in the field of the heat-insulated containers such as LNG tank, vacuum heat-insulation component is used to be only able to find patent as heat-barrier material Technology disclosed in document 2, hardly known to people.Then, it in order to which vacuum heat-insulation component is applied to heat-insulated container, needs to true Further increasing for the durability of empty heat insulating component is studied etc..

The present invention is made to solve this technical problem, it is intended that providing by vacuum heat-insulation component The vacuum heat-insulation structure can be further increased in the case where applied to the heat-insulated container for keeping the fluids such as LNG or hydrogen at low temperature The technology of the durability of part etc..

The method used for solving the problem

Heat-insulated container structure of the invention is as follows: including: the internal temperature holding stream having with 100 DEG C lower than room temperature or more The container body of the fluid retaining space of body；Heat insulating structure body；It, should with the container casing in the outside that the heat insulating structure body is arranged in Heat insulating structure body is the multilayer structure making for including first thermal insulation layer with the second thermal insulation layer in the outside that the first thermal insulation layer is arranged in, The thermal insulation board that above-mentioned second thermal insulation layer is constituted including the use of vacuum heat-insulation component, above-mentioned vacuum heat-insulation component include by inorganic material The fibrous core material that material is constituted and the bag-shaped external cladding material with gas barrier property, in the inside of the external cladding material to depressurize Air-tight state is enclosed above-mentioned core material and is constituted, and above-mentioned vacuum heat-insulation component is completely covered using foamed resin layer in above-mentioned thermal insulation board Above-mentioned external cladding material.

In addition, heat-insulated container of the invention can also use such as flowering structure: including: internal with 100 DEG C lower than room temperature Above temperature keeps the container body of the fluid retaining space of fluid；Heat insulating structure body；With the heat insulating structure body is set The container casing in outside, the heat insulating structure body be include first thermal insulation layer and be arranged in the first thermal insulation layer outside second every The multilayer structure making of thermosphere, above-mentioned second thermal insulation layer include vacuum heat-insulation component, and above-mentioned vacuum heat-insulation component includes by inorganic The core material and bag-shaped external cladding material with gas barrier property for the threadiness that material is constituted, the inside of above-mentioned external cladding material Decompression air-tight state is enclosed above-mentioned core material and is constituted, and has and inhibit or prevent sharply deforming for the vacuum heat-insulation component anti- Quick-fried structure.

In addition, heat-insulated container of the invention can also use such as flowering structure: for 100 DEG C lower than room temperature or more of temperature Cryogenic substance is kept, above-mentioned heat-insulated container includes: container body；Heat insulating structure body with configuration in the outside of the container body, The heat insulating structure body is the multilayer for including the first thermal insulation layer and second thermal insulation layer that set gradually outward from said vesse main body Structural body, the second thermal insulation layer include storing core material in the inside of external cladding material and depressurizing closed vacuum heat-insulation component, should Vacuum heat-insulation component is fixed on above-mentioned first thermal insulation layer by the secure component with flange part, is arranged in above-mentioned vacuum heat-insulation component Have the through portion in thickness direction perforation, and be provided with around the through portion above-mentioned external cladding material is fused to each other and The welding layer of formation, in the state of above-mentioned vacuum heat-insulation component fixed by above-mentioned secure component, above-mentioned secure component is to be inserted into State to above-mentioned through portion presses above-mentioned welding layer using above-mentioned flange part.

The above objects, features and advantages of the present invention illustrates change by following preferred embodiment referring to attached drawing It obtains obviously.

Invention effect

In the present invention, according to above structure, following effect can be obtained: being capable of providing and answered by vacuum heat-insulation component The vacuum heat-insulation component can be further increased in the case where heat-insulated container for keeping the fluids such as LNG or hydrogen at low temperature Durability etc. technology.

Detailed description of the invention

Figure 1A is to indicate that the LNG of the film mode of the ship inner canister with the heat-insulated container as embodiments of the present invention 1 is defeated The schematic diagram of the outline structure of tank sending ship, Figure 1B are the outline structures for indicating ship inner canister corresponding with the arrow view section the I-I of Figure 1A Schematic figure.

Fig. 2 is the schematic perspective view and the amplification of its part for the two-layer structure of inner surface for indicating ship inner canister shown in FIG. 1 Sectional view.

Fig. 3 is to indicate that the representative structure of the inner surface of the vacuum heat-insulation component for Fig. 1 and ship inner canister shown in Fig. 2 shows Meaning property sectional view.

Fig. 4 is the schematic plan view of vacuum heat-insulation component shown in Fig. 3.

Fig. 5 A and Fig. 5 B are to respectively indicate an example of thermal insulation board with Fig. 3 and vacuum heat-insulation component shown in Fig. 4 to show Meaning property sectional view.

Fig. 6 A and Fig. 6 B are other the schematic sectional views for respectively indicating thermal insulation board shown in Fig. 5 B.

Fig. 7 is indicated possessed by the vacuum heat-insulation component of the heat-insulated container for embodiments of the present invention 2 as swollen The schematic sectional view of an example of the check-valves of swollen easing portion.

Fig. 8 is another example indicated possessed by vacuum heat-insulation component shown in Fig. 7 as the check-valves of expansion easing portion Schematic sectional view.

Fig. 9 is the schematic diagram for indicating an example at the intensity decline position shown in Fig. 7 as expansion easing portion.

Figure 10 A is to indicate the spherical tank side with spherical tank with the heat-insulated container as embodiments of the present invention 3 The schematic diagram of the outline structure of the LNG transfer pot ship of formula, Figure 10 B are to indicate spherical shape corresponding with the arrow view section the II-II of Figure 1A The schematic diagram of the outline structure of tank.

Figure 11 is an example for indicating the structure of heat insulating structure body possessed by the heat-insulated container of embodiments of the present invention 4 Schematic sectional view.

Figure 12 is to indicate that an example for constituting the cross section structure of the vacuum heat-insulation component of heat insulating structure body shown in Figure 11 is shown Meaning property sectional view.

Figure 13 is the schematic of an example for the structure of vacuum heat-insulation component for indicating heat insulating structure body shown in composition Figure 11 Plan view.

Figure 14 is an example for indicating the structure of heat insulating structure body possessed by the heat-insulated container of embodiments of the present invention 5 Schematic sectional view.

Figure 15 indicates other of the structure of heat insulating structure body possessed by the heat-insulated container of embodiments of the present invention 5 Schematic sectional view.

Figure 16 indicate embodiments of the present invention 5 heat-insulated container possessed by heat insulating structure body structure it is another other The schematic sectional view of example.

Figure 17 indicates showing for an example of the structure of heat insulating structure body possessed by the heat-insulated container of embodiments of the present invention 6 Meaning property sectional view.

Figure 18 indicates other of the structure of heat insulating structure body possessed by the heat-insulated container of embodiments of the present invention 6 Schematic sectional view.

Figure 19 is showing for the representative structure for the ground type LNG tank for indicating the heat-insulated container as embodiments of the present invention 7 Meaning property sectional view.

Figure 20 is showing for the representative structure for the underground type LNG tank for indicating the heat-insulated container as embodiments of the present invention 7 Meaning property sectional view.

Figure 21 is showing for the other structures for the ground type LNG tank for indicating the heat-insulated container as embodiments of the present invention 7 Meaning property sectional view.

Figure 22 is the schematic cross-sectional for indicating the representative structure of hydrogen tank of the heat-insulated container as embodiments of the present invention 8 Figure.

Figure 23 is the song of the result of the thermal simulation for indicating heat-insulated container of the invention as an embodiment of the present invention Line chart.

Figure 24 is the schematic sectional view for indicating the heat insulation structural of existing heat-insulated container.

Specific embodiment

According to above structure, other than heat-insulated container is with two layers of " heat-insulated slot structure ", outermost second thermal insulation layer is also With the thermal insulation board using foamed resin layer cladding vacuum heat-insulation component.Thereby, it is possible to realize excellent heat-proof quality, and energy It is enough to protect vacuum heat-insulation component well, so even if with vacuum heat-insulation component contact or is exposed to such as seawater manufacture it is heat-insulated When container etc. in harsh environment, it also can effectively inhibit the corrosion (salt damage) of external cladding material or core material etc., can play excellent Elegant explosion-proof, is able to maintain that the durability and reliability of vacuum heat-insulation component.

In addition, foamed resin layer protects vacuum heat-insulation component, so thermal insulation board not only gives vacuum heat-insulation component to assign to sea The durability of harsh environment when the foreign matters such as water or manufacture etc., additionally it is possible to assign durability (the resistance to punching for physical impact etc. Hitting property).Therefore, the explosion-proof of vacuum heat-insulation component is further enhanced.Moreover, because there are thermal insulation board (vacuum heat-insulation structures Part), it can be improved heat-proof quality compared with prior art, so the thickness of " heat-insulated slot structure " can be thinner than the prior art. Thereby, it is possible to reduce the manufacturing cost of heat-insulated container.

In the heat-insulated container of above structure, can be such as flowering structure: above-mentioned foamed resin layer is will to send out comprising organic The raw material of infusion heats and makes its foaming, and formed in a manner of not remaining above-mentioned organic foaming agent.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned external cladding material has for bag The inner surface of the opening portion that inside is depressurized, the opening portion is hot welding layer, is formed in the thermal welding by above-mentioned opening portion Sealing, at least part at the mutual welding position of above-mentioned hot welding layer includes the thin thinner wall section of multiple thickness.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned sealing is in addition to multiple above-mentioned thin-walleds It further include multiple thick wall portions outside portion, which is the thick wall portion of the thickness thickness at above-mentioned welding position, above-mentioned thick wall portion and above-mentioned Thinner wall section is alternately arranged with mode of the above-mentioned thinner wall section between above-mentioned thick wall portion.

In addition, can be in the heat-insulated container of above structure such as flowering structure: constitute the above-mentioned vacuum of above-mentioned thermal insulation board every Hot component and above-mentioned foamed resin layer are bonded using bonding agent and are integrated.

Heat-insulated container of the invention can also be such as flowering structure: include: internal with 100 DEG C lower than room temperature or more of temperature Degree keeps the container body of the fluid retaining space of fluid；Heat insulating structure body；With the appearance in the outside that the heat insulating structure body is arranged in Device shell, the heat insulating structure body be include first thermal insulation layer and be arranged in the first thermal insulation layer outside second thermal insulation layer it is more Laminar structure, above-mentioned second thermal insulation layer include vacuum heat-insulation component, and above-mentioned vacuum heat-insulation component includes being made of mineral-type materials Threadiness core material and bag-shaped external cladding material with gas barrier property, depressurized in the inside of above-mentioned external cladding material closed State is enclosed above-mentioned core material and is constituted, and has the blast resistance construction sharply deformed for inhibiting or preventing the vacuum heat-insulation component.

According to above structure, it is provided in outermost second thermal insulation layer with excellent thermal insulation and there is explosion-proof knot The vacuum heat-insulation component of structure.So heat can be inhibited to be externally entering well, and can well in the first slot with than Low 100 DEG C of room temperature or more of temperature keeps fluid.Moreover, vacuum heat-insulation component has expansion easing portion, so being located at outermost layer Vacuum heat-insulation component even when exposed to causing internal residual gas to expand in harsh environment, also can effectively avoid vacuum The deformation sharply of heat insulating component.Therefore, excellent explosion-proof can be played, so vacuum heat-insulation component can be further increased Stability.

In the heat-insulated container of above structure, can be such as flowering structure: above-mentioned vacuum heat-insulation component is configured to above-mentioned outsourcing The thermal insulation board that material is covered by foamed resin layer completely is covered, and above-mentioned blast resistance construction not remain organic after foam by sending out The mode of infusion forms above-mentioned foamed resin layer to realize.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned vacuum heat-insulation component further include with it is upper Core material is stated to be enclosed the inside of above-mentioned external cladding material together and adsorb the adsorbent of internal residual gas, above-mentioned blast resistance construction By above-mentioned adsorbent using the adsorbent of the chemisorption type of the above-mentioned residual gas of chemisorption or using not because of residual gas Absorption and the adsorbent of non-heat generation that generates heat or realized using the adsorbent of chemisorption type and non-heat generation.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned blast resistance construction passes through in above-mentioned outsourcing It covers material setting expansion easing portion and realizes, above-mentioned expansion easing portion is when internal expansion of the residual gas in the external cladding material The residual gas is discharged to outside to mitigate expansion.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned expansion easing portion is arranged above-mentioned The check-valves of external cladding material or the low position of the locally intensity for being set in advance in above-mentioned external cladding material.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned sealing is in addition to multiple above-mentioned thin-walleds It further include multiple thick wall portions outside portion, which is the big thick wall portion of the thickness at above-mentioned welding position, above-mentioned thick wall portion and above-mentioned Thinner wall section is alternately arranged with mode of the above-mentioned thinner wall section between above-mentioned thick wall portion.

Heat-insulated container of the invention may be configured as follows: for keeping low with 100 DEG C lower than room temperature or more of temperature Warm substance, above-mentioned heat-insulated container include: container body；Heat insulating structure body with configuration in the outside of the container body, this is heat-insulated Structural body is the multilayer structure making for including the first thermal insulation layer and second thermal insulation layer that set gradually outward from said vesse main body, The second thermal insulation layer includes storing core material in the inside of external cladding material and depressurizing closed vacuum heat-insulation component, the vacuum heat-insulation Component is fixed on above-mentioned first thermal insulation layer by the secure component with flange part, is provided in above-mentioned vacuum heat-insulation component in thickness The through portion of direction perforation, and be provided with around the through portion and above-mentioned external cladding material is fused to each other and is formed molten Layer is connect, in the state of above-mentioned vacuum heat-insulation component fixed by above-mentioned secure component, above-mentioned secure component is to be inserted into above-mentioned pass through The state in logical portion presses above-mentioned welding layer using above-mentioned flange part.

According to above structure, vacuum heat-insulation component is fixed with first thermal insulation layer via through portion using secure component.Cause This, forms plate without for example that vacuum heat-insulation component is integrated with resin heat-barrier material (hard polyurethane foams etc.).This Kind plate is possible to the difference of the percent thermal shrinkage because of vacuum heat-insulation component and resin heat-barrier material due to generates the deformation such as warpage, the change Shape is likely to result in plate and generates gap to each other and reduce heat-proof quality.However, in said structure, vacuum heat-insulation component utilizes Secure component is mechanically fixed, so the generation in gap caused by being avoided that the deformation of plate and deforming etc. is bad.The result is that can be real Existing excellent heat-proof quality.

In addition, in above-mentioned plate, it is possible to which, because of the difference of percent thermal shrinkage, the external cladding material of vacuum heat-insulation component is by resin Heat-barrier material pull processed is flexible to lead to deterioration.However, in said structure, vacuum heat-insulation component is mechanical using secure component It is fixed, so being also avoided that the pull of vacuum heat-insulation component is flexible.It is thus possible to the deterioration of external cladding material is enough avoided, So vacuum heat-insulation component can keep heat-proof quality well for a long time.As a result, heat insulating structure body can remain for a long time good Heat-proof quality.

In addition, can be in the heat-insulated container of above structure such as flowering structure: the length of above-mentioned secure component is in deficiency State the length of container body.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned through portion is circle.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned flange part portion not from above-mentioned vacuum every The outer rim of hot component is stretched out.

In addition, can be in the heat-insulated container of above structure such as flowering structure: above-mentioned fluid be hydrogen, the hydrocarbon gas or comprising Their imflammable gas.

Illustrate the preferred embodiment of the present invention referring to the drawings.In addition, in the following, in all figures of the drawings, to same or Comparable element adds identical reference marker, omits its repeat description.

(embodiment 1)

[the ship inner canister as heat-insulated container]

In present embodiment, as representative an example of heat-insulated container of the invention, enumerates and be arranged on LNG transfer pot ship The ship inner canister of LNG illustrates the present invention.

As shown in Figure 1A, the LNG transfer pot ship 100A of present embodiment is the tank ship of film mode, including multiple ship inner canisters 110 (4 are shared in Figure 1A).Multiple ship inner canisters 110 are arranged in a column along the length direction of hull 111.Each ship inner canister 110 As shown in Figure 1B, the internal inner space (fluid retaining space) for storage (holding) liquefied natural gas (LNG).In addition, in ship For the major part of tank 110 by 111 external support of hull, top is closed by deck 112.

The inner surface of tank 110 in board is gone as shown in Figure 1B and Fig. 2 from Inside To Outside, stacks gradually once film 113, primary anti-hot tank 114, secondary film 115 and secondary anti-hot tank 116.The in board inner surface of tank 110 as a result, is formed with double " heat-insulated slot structure " (heat insulating structure body) of weight.Signified " heat-insulated slot structure " refers to by heat insulation material (heat-barrier material) herein The structure that layer and metal film (membrane) are constituted.The " heat-insulated of inside is constituted by a film 113 and primary anti-hot tank 114 Slot structure " is made of " the heat-insulated slot structure " in outside secondary film 115 and secondary anti-hot tank 116.

Heat insulation material is for preventing (or inhibition) heat from entering inner space from the outside of ship inner canister 110, in this embodiment party Primary anti-hot tank 114 and secondary anti-hot tank 116 are used in formula.The specific structure of primary anti-hot tank 114 and secondary anti-hot tank 116 without Especially limitation, typically, as shown in Fig. 2, the inside that can be enumerated in wooden cabinet 31 is filled with pearlite (perlite) The structure of equal foaming bodies 32.In addition, heat insulation material, which is not limited to hot box, can also use well known other heat insulation materials or heat-insulated Material.

Film plays a role as " slot " for keeping LNG not leak out in inner space, is coated on heat insulation material It uses.In the present embodiment, it using a film 113 for being coated on (inside) on primary anti-hot tank 114 and is coated on secondary The secondary film 115 of (inside) on anti-hot tank 116.The specific structure of film 113 and secondary film 115 is not particularly limited, but Typically, the metal films such as stainless steel or nickel alloy (invar) can be enumerated.

In addition, a film 113 and secondary film 115 are the component for leaking out LNG, but do not have and can be maintained as in ship The intensity of the structure of tank 110.The structure of ship inner canister 110 is supported by hull 111 (and deck 112).In other words, ship inner canister is come from The leakage of 110 LNG is prevented by a film 113 and secondary film 115, and the load of LNG is via primary anti-hot tank 114 and secondary solar heat protection Case 116 is supported by hull 111.Therefore, in the case where ship inner canister 110 is regarded as heat-insulated container, hull 111 is equivalent to " container Shell ", one time film 113 (inside is fluid retaining space) is equivalent to container body.

In the present embodiment, in two layers of " heat-insulated slot structure ", at secondary anti-hot tank 116 on the outermost side, such as Fig. 2 It is shown, it is provided with thermal insulation board 10.In example shown in Fig. 2, thermal insulation board 10 is located at the inside of secondary anti-hot tank 116, from ship inner canister 110 see the position of the back side in the face in outside as.Thermal insulation board 10 includes vacuum heat-insulation component 20A inside it.

[vacuum heat-insulation component]

Vacuum heat-insulation component 20A is as shown in figure 3, include core material 21, external cladding material (overcoating part) 22 and adsorbent 23.Core Material 21 is the component for the threadiness being made of mineral-type materials, encloses outer cladding material to depressurize air-tight state (substantial vacuum state) The inside of material 22.External cladding material 22 is the bag-shaped component with gas barrier property, in the present embodiment, by the layer for making two panels Lamination 220 is opposite and makes to be sealed around it by sealing 24, to become bag-shaped.

The fiber (inorganic fiber) that core material 21 is made of mineral-type materials is constituted.Specifically, can for example arrange Lift glass fibre, ceramic fibre, slag wool fiber, rock wool fibers etc..In addition, core material 21 is preferably shaped to plate, so in addition to this Other than a little inorganic fibers, well known adhesive material, powder etc. can also be contained.These materials facilitate core material 21 intensity, The raising of the physical property of uniformity, rigidity etc..

In addition, the well known fiber other than inorganic fiber also can be used, but in present embodiment as core material 21 In, it is the inorganic fiber of representative as glass fibre etc., uses glass of avarage fiber diameter in the range of 4 μm~10 μm This glass fibre is further fired and is used as core material 21 by glass fiber (the thicker glass fibre of fibre diameter).

Like this, it if core material 21 is inorganic fiber, can reduce in the inside of vacuum heat-insulation component 20A from core material Ingredient release residual gas caused by vacuum degree reduction.Moreover, if core material 21 is inorganic fiber, the suction of core material 21 Aqueous (hygroscopicity) decline, so being able to maintain that the amount of moisture of the inside of vacuum heat-insulation component 20A is lower.

In addition, even external cladding material 22 leads to broken bag or breakage, core because of certain influence due to firing inorganic fiber Material 21 will not expand very big, be able to maintain the shape as vacuum heat-insulation component 20A.Specifically, not firing nothing for example When sealing as core material 21 to machine fiber, although expansion when broken bag can reach broken bag different according to various conditions Preceding 2~3 times.Unlike this, by firing inorganic fiber, expansion when can be by broken bag inhibits within 1.5 times.Cause This can effectively inhibit expansion when broken bag or breakage, mention by implementing firing processing to the inorganic fiber as core material 21 The size retentivity of high vacuum insulation component 20A.

In addition, the firing condition of inorganic fiber is not particularly limited, well known various conditions can be suitably used.Separately Outside, the firing of inorganic fiber is particularly preferred processing in the present invention, but is not required processing.

Laminates 220 are to be sequentially laminated with sealer 221, gas barrier layer 222 and hot welding layer in the present embodiment 223 three layers of structure.Sealer 221 is the resin layer for protecting the outer surface of vacuum heat-insulation component 20A (front), Such as using resin film well known to nylon membrane, polyethylene terephthalate film, polypropylene screen etc., but it is not particularly limited. Sealer 221 both can be only made of a kind of film, and multiple films can also be laminated and constitute.

Gas barrier layer 222 be for prevent outside air enter vacuum heat-insulation component 20A inside layer, can be preferably Utilize the well known film with gas barrier property.As the film with gas barrier property, such as aluminium foil, copper foil, stainless steel foil can be enumerated etc. Metal foil, the evaporation film for the resin film as substrate being deposited metal or metal oxide, to the surface of the evaporation film in turn Implement the film etc. of well known coating processing, but is not particularly limited.As the substrate for evaporation film, can enumerate poly- to benzene two Formic acid glycol ester film or ethylene vinyl alcohol copolymer film etc. can enumerate aluminium, copper, oxidation as metal or metal oxide Aluminium, silica etc., but be not particularly limited.

Hot welding layer 223 is the layer for being bonded laminates 220 opposite to each other, and also as protection gas barrier layer 222 The layer on surface play a role.That is, the face (outer surface, front) of a side of gas barrier layer 222 is protected by sealer 221, but The face (inner surface, the back side) of another party is heating-fusion bonded the protection of layer 223.Core material 21 is sealed in the inside of vacuum heat-insulation component 20A With adsorbent 23, so these influences of internal object to gas barrier layer 222 can be heating-fusion bonded layer 223 and prevent or inhibit.Make The film of the composition of the thermoplastic resin such as low density polyethylene (LDPE) can be enumerated for hot welding layer 223, but is not particularly limited.

In addition, laminates 220 also may include the layer other than sealer 221, gas barrier layer 222 and hot welding layer 223. In addition, gas barrier layer 222 and hot welding layer 223 and sealer 221 are same, both can be only made of a kind of film, it can also layer It folds multiple films and constitutes.As long as specific structure is not particularly limited that is, laminates 220 meet following condition: an opposite The face of a side is hot welding layer 223 in (front and back sides)；And in multilayered structure have gas barrier layer 222 (or in multilayered structure appoint One layer has gas barrier property).

In the present embodiment, laminates 220 make week in the state of making hot welding layer 223 configure two panels relative to one another Most of thermal welding of edge, to be formed as bag-shaped external cladding material 22.Specifically, for example, as shown in figure 4, A part (top of the Fig. 4 to left side of face) of the peripheral part of laminates 220 is left as opening portion 25, it will be in addition to opening portion 25 Except the rest part of peripheral part carry out thermal welding in a manner of surrounding center portion (part that core material 21 is contained).

Adsorbent 23 is adsorbed and removed after the inner pressure relief of external cladding material 22 seals core material 21 from the fine of core material 21 The residual gas (also include vapor) of the releasings such as gap, from the outside air of the indivisible entrance such as sealing 24 (also include water Steam).The specific type of adsorbent 23 is not particularly limited, but is preferably able to using including known in zeolite, calcium oxide, silica gel etc. Material.

Herein, adsorbent 23 does not preferably have the adsorbent of physisorption instead of, with chemisorption Adsorbent (chemisorption type), adsorbent 23 are preferably adsorbent (the non-heat generation that will not be generated heat by the absorption of residual gas Material), preferably non-automatic incombustible material.If adsorbent 23 is chemisorption type, compared with physisorption type, the residual of absorption Gas will not be easily separated from, so the vacuum degree of the inside of vacuum heat-insulation component 20A can be kept well.

In the present embodiment, it is able to use in well known packing timber as adsorbent 23 comprising powdered ZSM-5 The adsorbent of type zeolite.As long as ZSM-5 type zeolite be it is powdered, surface area increases, so can be improved gas sorption ability.

In addition, particularly preferably being used in ZSM-5 type zeolite from the viewpoint of improving the N2 adsorption characteristic under room temperature At least 50% or more copper position is one price of copper in the copper position of ZSM-5 type zeolite, and at least 50% the above are coordinations in one price of copper The ZSM-5 type zeolite of one price of copper of three oxygen.Like this, ZSM-5 type zeolite is the copper monovalence bit rate for improving three oxygen of coordination When zeolite, the adsorbance of the air under decompression can be greatly improved.

In addition, the adsorbent with chemisorption when ZSM-5 type zeolite.Thus, for example even if temperature occurs The various environment risen etc will be because, may make any difference to adsorbent 23, also can substantially prevent from once adsorbing Gas is released again.Therefore, in the case where handling combustible fuel etc., though because certain influence adsorbent 23 adsorbed it is flammable Property gas, will not because temperature later rise etc. under the influence of relay out gas.The result is that can further increase vacuum every The explosion-proof of hot component 20A.

In addition, ZSM-5 type zeolite is non-flame properties adsorbent, so the adsorbent 23 of present embodiment is substantially only It is made of non-automatic incombustible material.Therefore, including core material 21, combustible material is not used in the inside of vacuum heat-insulation component 20A, Explosion-proof can be further increased.As the adsorbent of inorganic, such as lithium (Li) can be enumerated etc., but lithium is flammable Material.Moreover, in the present embodiment, the purposes as vacuum heat-insulation component 20A instantiates the ship inner canister 110 of LNG.Cause This, once this combustible material is used as adsorbent 23, even if assuming to be unlikely to cause huge explosion, but self-evident also uncomfortable Together in the container of the combustible fuels such as processing LNG etc..

As described above, if adsorbent 23 is the material of both non-heat generation material or non-automatic incombustible material or satisfaction, Even if then damage of external cladding material 22 etc. causes foreign matter to enter inside, it also can be avoided the misgivings of the fever of adsorbent 23 or burning. Therefore, it can be improved the stability of vacuum heat-insulation component 20A.

The specific manufacturing method of vacuum heat-insulation component 20A is not particularly limited, and appropriate can use well known production Method.It in the present embodiment, as described above, will being overlapped the laminates 220 of two panels in a manner of forming opening portion 25 Peripheral part thermal welding, to obtain bag-shaped external cladding material 22.Therefore, as shown in figure 4, from opening portion 25 to external cladding material 22 inside insertion core material 21 and adsorbent 23, such as depressurized in the pressure regulating equipments such as decompression chamber.As a result, from opening portion 25, the inside (inside bag) of bag-shaped external cladding material 22 is sufficiently depressurized and becomes substantial vacuum state.

Then, same as other peripheral parts, opening portion 25 can obtain vacuum heat-insulation also by thermal welding hermetic seal Component 20A.In addition, each condition such as thermal welding, decompression is not particularly limited, well known various conditions can be suitably used.In addition, External cladding material 22 is not limited to the structure of the laminates 220 using two panels.Such as a piece of 220 half of laminates can also be rolled over It is curved, by the side edge part thermal welding of two sides, it will be able to obtain the bag-shaped external cladding material 22 with opening portion 25.Or it can also be with Laminates 220 are configured to tubular, seal the opening portion of a side.

Either which kind of, in the present embodiment, external cladding material 22, for opening portion 25, have its inner surface be The opening portion 25 of hot welding layer 223.As a result, by carrying out thermal welding in the state that hot welding layer 223 is in contact with each other, It being capable of sealed opening portion 25.It therefore, can be inside hermetic bag as long as the sealed opening portion 25 after decompression.

Sealing 24 obtained from peripheral part thermal welding by external cladding material 22, as long as shown in figure 3, being opposite heat Welding layer 223 each other welding and form the structure at welding position.Herein, in the present embodiment, sealing 24 is such as Preferably at least include multiple thinner wall sections 241 shown in the enlarged drawing of Fig. 3, more preferably includes thick wall portion 242.Thinner wall section 241 be with Only be overlapped and the thickness of hot welding layer 223 compared to the mutual welding position of hot welding layer 223 thinner thickness position, And thick wall portion 242 is the thicker position of thickness at the mutual welding position of hot welding layer 223.Sealing 24 includes at least thinner wall section 241, so that outside air etc. is more difficult to enter the inside of vacuum heat-insulation component 20A from sealing 24.

In the peripheral part of external cladding material 22, expose the minimum end face for having hot welding layer 223, therefore outside air is possible to Entered by sealing 24.The gas barrier layer 222 of external cladding material 22 can not separate the entrance of outside air completely, but with heat Welding layer 223 is compared, and the permeability of gas (containing water vapor) is extremely low.Therefore, into the outside of the inside of vacuum heat-insulation component 20A The major part of air, which can be considered as, has passed through sealing 24.

As long as sealing 24 includes thinner wall section 241, it will be able to increase the outside air entered from the end face of hot welding layer 223 Penetrate resistance.Therefore, the entrance of outside air can effectively be inhibited.As long as in addition, as shown in figure 3, being located at thinner wall section 241 Mode between thick wall portion 242 is alternately arranged thick wall portion 242 and thinner wall section 241, it will be able to the intensity of sealing 24 is improved, and Effectively thinner wall section 241 is inhibited to become the heat transfer between gas barrier layer 222 caused by heat bridge (heat bridge).

In addition, the forming method etc. of the sealing 24 comprising multiple thinner wall sections 241 and thick wall portion 242 is not particularly limited. Representative forming method can enumerate method disclosed in patent document 1.In addition, the number of thinner wall section 241 and thick wall portion 242 It is not particularly limited, although different according to the width of the peripheral part as sealing 24, thinner wall section 241 is 4~6 and is It can.

[thermal insulation board]

In the present embodiment, thermal insulation board 10 possessed by secondary anti-hot tank 116 utilizes above-mentioned vacuum heat-insulation component 20A It constitutes.Specifically, thermal insulation board 10 is to utilize the cladding vacuum heat-insulation component completely of foamed resin layer 11 as shown in Fig. 5 A, Fig. 5 B What the external cladding material 22 of 20A obtained.

The Foamex well known to polyurethane or polystyrene etc. of foamed resin layer 11 is constituted, but preferably by containing poly- The styrene resin composition of styrene is constituted.Signified styrene resin composition is contained as resin component herein Polystyrene or styrene copolymer.Polystyrene is the polymer for only obtaining styrene as monomer polymerization, As styrene copolymer, either by compound (the phenylethylene chemical combination with chemical structure same as styrene Object) polymer as monomer polymerization, it is also possible to the copolymer for being copolymerized a variety of styrene compounds, can also be The copolymer that styrene compound (containing styrene) is obtained with other monomers copolymer compound.

Herein, as polymerization species compound, other than styrene, additionally it is possible to enumerate: o- methyl styrene, m- methyl Styrene, p- methyl styrene, α-methylstyrene, vinyltoluene, t- butyl toluene, divinylbenzene etc., but do not have Especially limitation.In addition, as long as styrene copolymer uses styrene compound as monomer component (containing styrene) Polymer, so as described above, can also but in general containing the monomeric compound other than styrene compound, In all monomer components, styrene compound contains 50 moles of % or more.Monomer other than styrene compound The specific type of compound is not particularly limited, can it is preferable to use can be with styrene copolymerized well known compound (for example, second The alkenes compounds such as alkene, propylene, butylene, butadiene, 2- methyl-propen).

In addition, as the resin component for styrene resin composition, polystyrene or styrene copolymer (system Referred to as styrene resin) at least using one kind, but two or more styrene resins also can be used.And conduct Resin component, other than styrene resin, can also and with well known resin, the alkene such as polyolefin or olefin copolymer Resinoid.At this point, in resin component all contained by foamed resin layer 11, styrene resin is for 50 weight % or more It can.

In addition, well known additive can also be contained in styrene resin composition other than resin component.As Additive, specifically, can for example enumerate filler, lubrication prescription, mould release, plasticizer, antioxidant, incombustible agent, ultraviolet light Absorbent, anti-live agent, intensive etc., but be not particularly limited.In addition, being had in the formation of foamed resin layer 11 using following Machine class foaming agent, but in the present specification, organic foaming agent is not comprised in additive described herein.

Styrene resin composition contains well known organic foaming agent as described above.As organic foaming agent, tool It is saturated such as can enumerate propane, n- butane, iso-butane, n- pentane, isopentane, neopentane, pentamethylene, hexane for body Hydrocarbon；The ether compounds such as dimethyl ether, diethyl ether, ethyl methyl ether；Halogenated hydrocarbons such as chloromethanes, methylene chloride, dicholorodifluoromethane etc., but do not have There is special limitation.One kind can be both used only in these organic foaming agents, two or more can also be used with appropriately combined.They Among particularly preferably using the saturated hydrocarbons such as n- butane.

The forming method of foamed resin layer 11 is not particularly limited, using well known method by styrene resin and other Ingredient and organic foaming agent hybrid modulation styrene resin composition, by obtained styrene resin composition and Vacuum heat-insulation component 20A is accommodated in the shaping mould of thermal insulation board 10, makes organic foaming agent foam.At this point, in finishing die It is interior, using well known method filling styrene resin composition so that vacuum heat-insulation component 20A is coated to Foamex completely In layer 11.

The concrete form of styrene resin composition is not particularly limited, usually expanded beads.That is, Foamex Layer 11 is so-called " pearl method foamed styrene (EPS, Expanded Poly-Styrene) ".In this case, by expanded beads It is accommodated in finishing die with vacuum heat-insulation component 20A, is heated by steam, make organic foaming agent foam.Foamex It when layer 11 is EPS, is heated by steam, the formed body (thermal insulation board 10) of expanded beads welding each other can be obtained.

Obtained thermal insulation board 10 is in foamed resin layer 11 comprising vacuum heat-insulation component as shown in figure sa or figure The structure of 20A.Thereby, it is possible to protect the surface of vacuum heat-insulation component 20A.In addition, including the thermal insulation board of vacuum heat-insulation component 20A 10 are manufactured to " formed products ", and shape and size can standardize.Therefore, thermal insulation board 10 is stored in external cladding material 22 The vacuum heat-insulation component 20A of the structure of core material 21 is compared, and can be improved the dimensional accuracy as " heat-barrier material ".

Moreover, in the present invention, thermal insulation board 10 is applied to the heat-insulated containers such as ship inner canister 110 as shown in Figure 1A and Figure 1B etc. In, but by the surface of protection thermal insulation board 10, it can be improved the reliability of heat-insulated container itself.

For example, in the present embodiment, thermal insulation board 10 in secondary anti-hot tank 116 as shown in Fig. 2, be set to the position in outside It sets.This is in order to by configuring the excellent vacuum heat-insulation component 20A of heat-proof quality in the outermost of heat-insulated container (ship inner canister 110) Layer effectively inhibits heat to be externally entering.Herein, in LNG transfer pot ship 100A, for ship inner canister 110, it is desirable that meet the world The necessary item of " International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk " (IGC code) that maritime affairs organ (IMO) formulates Part.

In IGC rule, for the ship inner canister 110 of film mode, it is contemplated that the collision of ship or the equal caused hull that hits a submerged reef 111 damage, it is desirable that complete secondary protection wall.Herein, just in case in the case that hull 111 is damaged, as ship inner canister 110 116 first contact seawater of outermost secondary anti-hot tank.Therefore, the vacuum heat-insulation in outside is located in secondary anti-hot tank 116 Component 20A is also required to the durability of the contact of tolerance seawater.

The laminates 220 of external cladding material 22 for vacuum heat-insulation component 20A are substantially made of resin, but gas barrier layer 222 use metal foil or metal deposition film as described above.In general metal one touches seawater and is easy for by contained in seawater The corrosion such as various ions.In the present embodiment, thermal insulation board 10 is to utilize the cladding vacuum heat-insulation structure completely of foamed resin layer 11 The structure of part 20A, even if so seawater also can effectively avoid contact with sea water by foamed resin layer 11 into hull 111 To vacuum heat-insulation component 20A.Thereby, it is possible to effectively inhibit the corrosion (salt damage) of external cladding material 22 or core material 21 etc..

In addition, thermal insulation board 10 is not instead of only made of foamed resin layer 11, as shown in figure and Fig. 5 A, Fig. 5 B in inside With vacuum heat-insulation component 20A, so thermal insulation is very excellent.Therefore, heat-proof quality will not be reduced, additionally it is possible to compare the prior art The thickness (i.e. the thickness of " heat-insulated slot structure ") for subtracting secondary anti-hot tank 116 is thin.Thereby, it is possible to reduce the manufacture of ship inner canister 110 at This.

Moreover, foamed resin layer 11 protects vacuum heat-insulation component 20A, so even if applying impact etc. to thermal insulation board 10, Broken bag or the breakage etc. of vacuum heat-insulation component 20A can effectively be inhibited.Therefore, thermal insulation board 10 not only gives vacuum heat-insulation component 20A The durability of harsh environment when assigning to the foreign matters such as seawater or manufacture etc., additionally it is possible to assign for the durable of physical impact etc. Property (impact resistance).The result is that can be improved the reliability of vacuum heat-insulation component 20A.

In addition, it is preferable to use styrene resin compositions as described above for foamed resin layer 11.In general, EPS and hair Bubble polyurethane (polyurethane foam) etc. is low compared to water imbibition, and the degradation speed of heat-proof quality is also small.Therefore, with foamed resin layer 11 The case where being made of polyurathamc is compared, and the protective value and heat-proof quality of vacuum heat-insulation component 20A is more excellent.In addition, The external cladding material 22 of vacuum heat-insulation component 20A have above-mentioned sealing 24, therefore vacuum heat-insulation component 20A itself have it is good Good durability.Thermal insulation board 10 can not only play the durability to seawater as a result, moreover it is possible to ship inner canister 110 manufacture when or dimension Various environmental changes when repairing, also play sufficient durability.

Specifically, for example, the LNG for being accommodated in ship inner canister 110 is usually -162 DEG C, therefore including 10 (vacuum of thermal insulation board Heat insulating component 20A) " heat-insulated slot structure " be required to the use in -70 DEG C~+60 DEG C of wide temperature range of tolerance.In addition, It needs to imagine, when manufacturing ship inner canister 110, " heat-insulated slot structure " is exposed in+110 DEG C of vapor, in maintenance, is exposed to + 80 DEG C of environment.

Moreover, when manufacturing ship inner canister 110, high-precision film is needed to weld, the welding position of film visually inspected with And the leak test etc. using helium.The leak test generally helium pressurization of 20 volume % concentration of the interior filling of tank 110 in board Leakage of the helium from welding position is detected using detector under state.Helium gas molecules size is small, so with as air principal component Nitrogen compared with oxygen be easier into vacuum heat-insulation component 20A inside.However, vacuum heat-insulation component 20A, which has, contains thinner wall section 241 and thick wall portion 242 sealing 24, so even if also can sufficiently reduce helium in leak test and enter outer cladding material A possibility that inside of material 22.

[variation of thermal insulation board]

Herein, as shown schematically in Fig. 5 A, cortex 10a, 10b of thermal insulation board 10 are compared with the inside of thermal insulation board 10, place Cured state is compressed in expanded beads.Unlike this, as shown in Figure 5 B, thermal insulation board 10 is also possible to remove cortex 10a, 10b It obtains.In other words, thermal insulation board 10 is also possible to the structure with the face for removing cortex 10a, 10b.Thereby, it is possible to well from The foamed resin layer 11 of thermal insulation board 10 removes organic foaming agent.

In general, in EPS formed products, organic foaming agent is left, thermal insulation is more excellent.However, organic foaming The presence of agent is there is a possibility that the above-mentioned leak test accuracy decline using helium.Then, remove thermal insulation board 10 cortex 10a, 10b.Densely cured position is removed expanded beads as a result, so can be easy to remove organic from foamed resin layer 11 Foaming agent.As a result, it is possible to a possibility that effectively inhibiting the internal residual organic foaming agent of EPS formed products.

In addition, cortex 10a, 10b for being removed are at least cortex 10a (the outer surface cortex of outer surface (front and back) It 10a), can also be with the also cortex 10b of the side of removing thermal insulation board 10 other than exterior surface cortex 10a.Removing cortex 10a, The method of 10b utilizes the excision such as well known cutting machine of cutting for EPS cortex 10a, 10b.In addition, removing cortex After 10a, 10b, the method for removing organic foaming agent is not particularly limited, and is used heat-insulated with predetermined temperature and stipulated time heating Method well known to plate 10 etc..

Herein, about whether cortex 10a, 10b has been cut off, any surface and another table of foamed resin layer 11 need to only be compared Face can be easy confirmation.Specifically, the inside of cortex 10a, 10b and foamed resin layer 11, density, the expanded beads of expanded beads Each condition such as hardness, surface roughness it is significantly different.Therefore, as long as those skilled in the art, it is sufficient to be able to confirm that foaming The surface of resin layer 11 is the interior layer after cortex 10a, 10b or excision.

In addition, as shown in fig. 6 a or 6b, in thermal insulation board 10, vacuum heat-insulation component 20A and foamed resin layer 11 can also With glued and integrated.Even if thermal insulation board 10 is exposed to high temperature and vacuum heat-insulation component 20A is caused to thermally expand as a result, also can Inhibit the misgivings that gap is generated between foamed resin layer 11 and vacuum heat-insulation component 20A.Therefore, it can be improved the resistance to of thermal insulation board 10 Long property and stability.

For example, it can be as shown in Figure 6A, vacuum heat-insulation component 20A and foamed resin layer 11 by coated in vacuum every The structure that the bonding agent 12 on the surface of hot component 20A is bonded, or as shown in Figure 6B, the laminates for external cladding material 22 220 outermost layer is " the thermal welding sealer 224 " being made of the resin with heat sealability and the thermal welding surface is protected The structure that sheath 224 plays a role as bonding agent.

The specific type of bonding agent 12 or thermal welding sealer 224 is not particularly limited, same as hot welding layer 223 It is able to use low density polyethylene (LDPE) etc..Herein, bonding agent 12 or thermal welding sealer 224 are preferably resistance to 80 DEG C or more It is hot.Thus, it is possible to cope with significantly temperature change when ship inner canister 110 manufactures or when maintenance.

In addition, melting bonding agent 12 or thermal welding sealer 224, make vacuum heat-insulation component 20A and Foamex The method of 11 bonding of layer is not particularly limited.For example, if it is bonding agent 12 is utilized, as long as bonding agent 12 is then coated in vacuum The outer surface of heat insulating component 20A (external cladding material 22), using as the styrene resin group of the raw material of foamed resin layer 11 At heating in the state of object (preferably an example is expanded beads) cladding vacuum heat-insulation component 20A, send out styrene resin composition Bubble, while melt bonding agent 12.In addition, using thermal welding sealer 224, as long as utilizing benzene It is heated in the state of vinyl resins constituent cladding vacuum heat-insulation component 20A, so that styrene resin composition is foamed, simultaneously Melt thermal welding sealer 224.Therefore, as long as bonding agent 12 or thermal welding sealer 224 are set by foaming The material melted under the heating temperature of the raw material of rouge layer 11 is constituted.

(embodiment 2)

The heat-insulated container of present embodiment 2 is substantially same as above embodiment 1, but in order to improve vacuum heat-insulation component Stability, be configured to blast resistance construction.

As long as general vacuum heat-insulation component is applied to the fields such as household appliances or house, it will be able to realize sufficiently effective Performance.Unlike this, such as in fields such as LNG tanks, it is desirable that with the different performance in fields such as household appliances or house.For example, In the case where LNG transfer pot ship, for vacuum heat-insulation component, based on " international bulk ships carrying liquefied gases are constructed and set Standby rule " (IGC Code), has the performance different from fields such as household appliances to thermal protection struc ture.It, can be with as specific an example It enumerates, in the case where certain accident occurs, thermal protection struc ture needs to have the performance (stability) not deformed as far as possible etc..

However, using vacuum heat-insulation component hardly by people institute as heat-barrier material in the field of the heat-insulated containers such as LNG tank Know.Then, in order to vacuum heat-insulation component is applied to heat-insulated container, need not needing the fields such as household appliances special consideration should be given to Stability is studied.Therefore, in the present embodiment, vacuum heat-insulation component is being applied to keep LNG or hydrogen at low temperature In the case where the heat-insulated container of the fluids such as gas, in order to further increase the stability of the vacuum heat-insulation component, vacuum heat-insulation component With blast resistance construction.

[blast resistance construction of vacuum heat-insulation component]

Vacuum heat-insulation component 20B of the invention substantially has with the vacuum heat-insulation component 20A illustrated in above embodiment 1 There is same structure (referring to Fig. 3 and Fig. 4), but also has and inhibit or prevent in the internal residual gas expansion of external cladding material 22 The only blast resistance construction of vacuum heat-insulation component 20B sharply deformed.

Specific blast resistance construction is not particularly limited, but typically, such as can be listed below: structural example 1: cladding is true The foamed resin layer 11 of empty heat insulating component 20B is formed as the structure for not remaining organic foaming agent after expanding；Structural example 2: with The adsorbent 23 that core material 21 is sealing into the inside of external cladding material 22 together is the chemisorption type of chemisorption residual gas Or the non-heat generation of fever or the structure of chemisorption type and non-heat generation will not be led to because of the absorption of residual gas；Or knot Structure example 3: external cladding material 22 has the structure etc. for making residual gas be discharged into the external expansion easing portion for mitigating expansion.

Firstly, structural example 1 can enumerate the removing of cortex 10a, 10b of above-mentioned thermal insulation board 10.In general, EPS at In shape product, organic foaming agent is left, thermal insulation is more excellent.However, the presence of organic foaming agent is there is a possibility that above-mentioned benefit With the leak test accuracy decline of helium.In addition, when remaining organic foaming agent in thermal insulation board 10, LNG transfer pot ship 100A Just in case having met with accident etc., it is possible to because organic foaming agent influences the stability of vacuum heat-insulation component 20B.

Then, as illustrated in above embodiment 1, cortex 10a, 10b of thermal insulation board 10 are removed.It sends out as a result, Bubble pearl is densely removed at cured position, so can be easy to remove organic foaming agent from foamed resin layer 11.As a result It is a possibility that capable of effectively inhibiting the internal residual organic foaming agent of EPS formed products.That is, the removing of cortex 10a, 10b with The structural example 1 of the blast resistance construction of vacuum heat-insulation component 20B is corresponding.

In addition, structural example 1 as blast resistance construction " foamed resin layer 11 of cladding vacuum heat-insulation component 20B is formed as Do not remain the structure of organic foaming agent after expanding " it is not limited only to remove cortex 10a, 10b.In the present embodiment, it foams Resin layer 11 is formed and making it foam the raw material heating containing organic foaming agent, as long as so after expanding being capable of benefit Organic foaming agent is removed with well known method, it will be able to realize the structural example 1 of blast resistance construction.

Then, in addition, structural example 2 is equivalent to the above-mentioned preferred example of adsorbent 23.As described in above embodiment 1 As bright, as adsorbent 23 either physisorption type is also possible to chemisorption type, it is preferred that being chemisorption Type is preferably the adsorbent (non-heat generation material) that will not be generated heat by the absorption of residual gas in chemosorbent 23, preferably For non-automatic incombustible material.

As described above, compared with physisorption type, the residual gas of absorption is not if adsorbent 23 is chemisorption type It can be easily separated from, so the vacuum degree of the inside of vacuum heat-insulation component 20B can be kept well.Moreover, residual gas will not It flees from so can effectively prevent in the inside of external cladding material 22 because residual gas expansion causes vacuum heat-insulation component 20B to deform Misgivings.Therefore, the explosion-proof and stability of vacuum heat-insulation component 20B be can be improved.

In addition, if adsorbent 23 is the material of both non-heat generation material or non-automatic incombustible material or satisfaction, i.e., Just damage of external cladding material 22 etc. causes foreign matter to enter inside, also can be avoided the misgivings of the fever of adsorbent 23 or burning.Therefore, It can be improved the explosion-proof and stability of vacuum heat-insulation component 20B.

Like this, as adsorbent 23, preferably by the chemisorption type of residual gas chemisorption not because of residual gas Absorption lead to the non-heat generation of fever or the structure of chemisorption type and non-heat generation, but the structure and vacuum heat-insulation component The structural example 2 of the blast resistance construction of 20B is corresponding.In particular, when adsorbent 23 is the ZSM-5 type as described in above embodiment 1 Zeolite can further increase the explosion-proof of vacuum heat-insulation component 20B then because being chemisorption type and non-automatic incombustible material Property.

The expansion easing portion of structural example 3 is specifically described below.The specific structure of expansion easing portion does not limit especially System, but typically, Fig. 7 and check-valves 26A, 26B shown in Fig. 8 or intensity shown in Fig. 9 decline position 243 can be enumerated.

For example, check-valves 26A shown in Fig. 7 has the valve opening 260 for closing a part that external cladding material 22 is arranged in The structure of hat shape.Valve opening 260 is arranged to penetrate through the inside and outside of external cladding material 22, and the check-valves 26A of hat shape is by the elastic material such as rubber Material is constituted.In general, valve opening 260 is closed by check-valves 26A, so substantially preventing outside air from entering the interior of external cladding material 22 Portion.Even if changing because of the contraction of temperature change external cladding material 22 of surrounding, with the internal diameter of this valve opening 260, also because of check-valves 26A is made of elastic material, therefore still is able to close valve opening 260 well.Just in case residual gas is in external cladding material 22 In the case that portion expands, with the rising of internal pressure, check-valves 26A is easy to disengage from valve opening 260, is discharged into residual gas outer Portion.

In addition, check-valves 26B as shown in Figure 8 is cut-in portion 261 of the closing formation in a part of outer covering material 22 Structure valve shape structure.Specifically, check-valves 26B includes: the outside left 262 to play a role as valve body, as valve Adhesive layer 264 of the inside line 263 and bonding that seat plays a role remove outside left 262 from inside line 263.Outside Side 262 is a part to cover the mode external cladding material 22 being formed on the cut-in portion 261 of external cladding material 22 The shape of band-like extension.Inside line 263 is a part of the external cladding material 22 adjacent with cut-in portion 261, with outside left 262 are overlapped.

It is seated at the inside line 263 as valve seat usually as the outside left 262 of valve body, is closed as valve opening Cut-in portion 261.At this point, band-like outside left 262 is Nian Jie with inside line 263 by adhesive layer 264, so can be avoided outer Side 262 is rolled-up, and can maintain stable seating condition (closed state).Substantially it can prevent outside air from entering as a result, The inside of external cladding material 22.Just in case adhesive layer 264 is mildly bonded in the internal residual gas expansion of external cladding material 22 Outside left 262 and inside line 263, so the outside left 262 as valve body is easy to from conduct with the rising of internal pressure The inside line 263 of valve seat is rolled.Internal residual gas is discharged into outside as a result,.

In addition, intensity sloping portion 243 shown in Fig. 9 is the mutual welding position of hot welding layer 223 in sealing 24 The small position of the welding area of 240 a part.In Fig. 9, in schematic property plan view and upper and lower partial cross-sectional view, welding Position 240 is shown as the region of blacking.In the sealing 24 of standard, as shown in the partial cross-sectional view of the top of Fig. 9, weld portion Position 240 is formed in a manner of throughout 24 entirety of sealing.On the other hand, in intensity decline position 243, such as the office of the lower section of Fig. 9 Shown in portion's sectional view, the inside (21 side of core material) of sealing 24 is not fused, so welding area ratio others sealing 24 It is small.

Intensity decline position 243 is a part at the welding position 240 of sealing 24, so external cladding material 22 will be used as Laminates 220 overlap each other sealing.Therefore, outside air cannot substantially enter in external cladding material 22 from sealing 24 Portion.Just in case pressure caused by the rising of internal pressure is easy to concentrate on intensity in the internal residual gas expansion of external cladding material 22 Decline position 243.The hot welding layer 223 for constituting welding position 240 as a result, is removed each other, and residual gas is discharged into outside.

Herein, intensity declines position, is not limited to intensity decline position 243 as shown in Figure 9 and locally reduces welding like that The structure of the welding area at position 240, even if welding area is identical, as long as also can partly reduce the structure of heat seal strength i.e. It can.For example, when heat welded hot welding layer 223 that at this point, only the heat that is applied of a part is reduced, make welding position The degree of 240 welding is weaker.Alternatively, intensity decline position also can be set in 240 grades of welding position hot welding layer 223 Other than mutual welding position.For example, it is also possible to be formed between the hot welding layer 223 and gas barrier layer 222 for constituting laminates 220 The position of stacking strength is locally reduced, and declines position as intensity.

Alternatively, it is also possible to use the heat seal strength compared with other positions low the material of a part of hot welding layer 223 Material forms intensity and declines position.For example, as hot welding layer 223, as described above, it is preferred to it is able to use low density polyethylene (LDPE), But a part of hot welding layer 223 can also be poly- to benzene using high density polyethylene (HDPE), ethylene-vinyl alcohol copolymer or amorphous Naphthalate etc..The heat seal strength of these high molecular materials is lower than low density polyethylene (LDPE), so can be preferred for strong The formation at degree decline position.

Alternatively, the forming method as intensity decline position, can also use locally makes hot welding layer 223 mutual molten A part setting adhesive strength in thin, in hot welding layer 223 the region as welding position 240 of the thickness of socket part position 240 is small Bonding agent, in the region as sealing 24 of laminates 220 locally remove hot welding layer 223 for gas barrier layer 222 each other The structure of direct thermal welding.

In the present embodiment, vacuum heat-insulation component 20B (or the heat-insulated flitch 10 for including it) is arranged outermost two Secondary anti-hot tank 116, so just in case vacuum heat-insulation component 20B (or thermal insulation board 10) is possible to be exposed to harsh whens accident etc. occurs Environment in.In this case, it is possible to lead to internal residual gas because vacuum heat-insulation component 20B is exposed to harsh environment Expansion etc..Unlike this, when vacuum heat insulating component 20B has expansion easing portion as described above, it is located at outermost vacuum Heat insulating component 20B even when exposed to causing internal residual gas to expand in harsh environment, also can effectively avoid vacuum every The deformation of hot component 20B.Therefore, the explosion-proof of vacuum heat-insulation component 20B and stability, which access, further increases.

In addition, sealing 24 preferably at least includes multiple thinner wall sections 241, more as illustrated in above embodiment 1 Preferably include thick wall portion 242 (referring to the enlarged drawing of Fig. 3).

From the viewpoint of blast resistance construction, as long as sealing 24 includes at least thinner wall section 241, from hot welding layer 223 The outside air that end face enters increases through resistance.Therefore, it can effectively inhibit the entrance of outside air, and can reduce A possibility that outside air expansion into the inside of external cladding material 22 causes vacuum heat-insulation component 20B to deform.In addition, as schemed Shown in 3, as long as being alternately arranged thick wall portion 242 and thinner wall section 241, energy with mode of the thinner wall section 241 between thick wall portion 242 The intensity of sealing 24 is enough improved, and effectively thinner wall section 241 is inhibited to become gas barrier layer caused by heat bridge (heat bridge) Heat transfer between 222.

(embodiment 3)

In above embodiment 1 and 2, as representative an example of heat-insulated container of the invention, film mode is instantiated LNG transfer pot ship 100A (A, Figure 1B referring to Fig.1), however, the present invention is not limited thereto, the LNG that can be also suitable for other modes are conveyed Tank ship.In present embodiment 3, as shown in Figure 10 A, Figure 10 B, the spherical tank mode with independent spherical tank 150 is illustrated LNG transfer pot ship 100B (such as Moss mode) is illustrated.

As shown in Figure 10 A, the LNG transfer pot ship 100B of present embodiment includes multiple 150 (Figure 10 A of independent spherical tank In share 5).The spherical tank 150 is equivalent to heat-insulated container.Multiple spherical tanks 150 are arranged in along the length direction of hull 151 One column.Each spherical tank 150 as shown in Figure 10 B, has heat-insulated container 153, and the inside of the heat-insulated container 153 is storage (holding) The inner space (fluid retaining space) of liquefied natural gas (LNG).In addition, the major part of spherical tank 150 is propped up outside hull 151 It holds, top is covered by lid 152.

Heat-insulated container 153 as shown in Figure 10 B, is carried out including container body 100 and to the lateral surface of the container body 100 Heat-insulated heat insulating structure body 154.Container body 100 is configured to the low temperature for keeping LNG etc. to save with the temperature lower than room temperature Substance is the made of metal such as stainless steel, aluminium alloy.The temperature of LNG is usually -162 DEG C, so as specific container body 100, it can enumerate with a thickness of the made of aluminum alloy of 50mm or so.Or the stainless steel being also possible to a thickness of 5mm or so.

Heat-insulated container 153 is fixed on hull 151 by supporting mass 155.Supporting mass 155 is generally known as baffle (skirt), tool There is thermal resistance (thermal break) structure.Heat insulation structure is, for example, to pass in the centre of aluminium alloy and cryogenic steel material inserted with heat The structure of the low stainless steel of conductance, thus, it is possible to reduce into heat.

It, can be using the vacuum heat-insulation component 20A illustrated in above embodiment 1 in the spherical tank 150 of present embodiment It, can also be using the vacuum heat-insulation component 20B illustrated in above embodiment 2 with the thermal insulation board 10 using the vacuum heat-insulation component With the thermal insulation board 10 using the vacuum heat-insulation component.Alternatively, it is also possible to use the structure illustrated in aftermentioned embodiment 4~6. Especially from the viewpoint of effectively inhibiting the corrosion such as external cladding material 22 or core material 21 (salt damage), preferably spherical tank 150 includes The vacuum heat-insulation component 20A and thermal insulation board 10 illustrated in above embodiment 1 is used as heat insulating structure body 154.

(embodiment 4)

As illustrated in above-mentioned Embodiments 1 to 3, in the cryogenic tanks such as storage LNG, generally conveyed to reduce In the process with the evaporation loss in storage, using strengthening heat-insulated measure using vacuum heat-insulation component.Here, vacuum heat-insulation Component fits to container body sometimes with the thermal insulations resin material such as polyurethane foam and is formed as plate.If vacuum heat-insulation structure There are significant difference between part and the percent thermal shrinkage of polyurethane foam, plate is likely to occur buckling deformation.Plate occurs warpage and becomes Shape then generates gap between the plate, it is possible to heat-proof quality be caused to decline.

In addition, when the multilayer laminate film that the external cladding material (overcoating part) as vacuum heat-insulation component uses is cooled considerably Be easy to cause mechanical strength decline and it is brittle.Therefore, as time go on, embrittlement constantly carries out, it is possible in multilayer laminate film Middle generation cracking.If external cladding material is cracked, the pressure increase of the inside of vacuum heat-insulation component will lead to, so every Hot property is remarkably decreased.In addition, multilayer laminate film is pulled because of the thermal contraction of polyurethane foam when vacuum heat-insulation component forms plate It is flexible.The pull is flexible when being repeated, and multilayer laminate film will be brittle at any time, is easy to happen cracking.Therefore, it is possible to difficult To keep the heat-proof quality of vacuum heat-insulation component for a long time.

Then, in present embodiment 4, using vacuum heat-insulation component be arranged through portion and using secure component fastening Structure.As a result, in the heat-insulated container of application vacuum heat-insulation component, further increasing for heat-proof quality is realized, and can grow Phase effectively realizes good heat-proof quality.

[heat-insulated container and heat insulating structure body]

In the present embodiment, as an example of heat-insulated container, the spherical tank mode illustrated in above embodiment 3 is enumerated LNG transfer pot ship 100B possessed by spherical tank 150 (Figure 10 A and Figure 10 B) illustrate the present invention.

As shown in Figure 10 B, the heat-insulated container 153 of spherical tank 150 compares room temperature as LNG (usually -162 DEG C) for keeping Low 100 DEG C or more of substance, outer surface part are heat-insulated by above-mentioned heat insulating structure body 154.Above-mentioned supporting mass 155 is for will be every Heat container 153 is fixed on hull 151, generally known as baffle (skirt).In the present embodiment, supporting mass 155 has thermal resistance (thermal break) structure.As heat insulation structure, such as it can enumerate and for example be interleave in aluminium alloy and cryogenic steel material Enter the structure for the stainless steel for having pyroconductivity low.The structure can reduce heat and enter heat-insulated container via supporting mass 155 153.In addition, as described above, thus, it is possible to reduce heat from outside by the periphery using the covering heat insulating structure body 154 of lid 152 Into.

The heat insulating structure body 154 of present embodiment is heat-insulated with first thermal insulation layer 301 and second for example as shown in figure 11 The two-layer structure of layer 302 is arranged on the container body 300 for constituting heat-insulated container 153.First thermal insulation layer 301 is by thermal insulation board 40 It constitutes, second thermal insulation layer 302 is made of vacuum heat-insulation component 20C.In addition, illustrating in thermal insulation board 40 and above embodiment 1 or 2 Thermal insulation board 10 it is different, vacuum heat-insulation component 20A or 20B integration are not constituted, by well known foamed material It is configured to plate.

In the front (outer surface) of container body 300, the thermal insulation board 40 of the square shape of a several thousand sheets is pasted, thus constitutes first Thermal insulation layer 301.In addition, constituting second thermal insulation layer 302 in the exterior arrangement vacuum heat-insulation component 20C of first thermal insulation layer 301.

The specific structure of the heat-insulated container 153 of present embodiment is not particularly limited, as container body 300, Ke Yilie Citing is such as with a thickness of the shell of the stainless steel of 5mm or so.As thermal insulation board 40, for example, can enumerate by with a thickness of 100mm~ ((Expandable Polystyrene Beads- is based on EPS's for pearl method expanded polystyrene (EPS) for the foamed styrene of 400mm or so Expanded polystyrene (EPS))) formed, but not limited to this, can also by other resinaes such as polyurethane foam or phenol formaldehyde foam every Hot material is constituted, and can also be had and be loaded inorganic heat-barrier material (mineral wool, pearlite etc.) composition in thermal-insulated frame (not shown).Separately Outside, vacuum heat-insulation component 20C is illustrated later.

It constitutes the vacuum heat-insulation component 20C of first thermal insulation layer 301 and constitutes the thermal insulation board 40 of second thermal insulation layer 302 using tightly Gu component 13 is mounted on container body 300.Thermal insulation board 40 is provided with fastener hole 41, and is arranged in vacuum heat-insulation component 20C There is through portion 27.In addition, the welding layer touched each other around through portion 27 by the external cladding material 22 of vacuum heat-insulation component 20C 28 are constituted.Secure component 13 is, for example, well known bolt, and bolt axle portion 13a is inserted into fastener hole 41, and bolt head Portion 13b can be configured in through portion 27.

Through portion 27 of the bolt axle portion 13a of secure component 13 from the vacuum heat-insulation component 20C as second thermal insulation layer 302 It is inserted into the fastener hole 41 of the thermal insulation board 40 as first thermal insulation layer 301.Secure component 13 is fixed on container body 300 as a result,. In this state, the welding layer 28 of vacuum heat-insulation component 20C is pressed by the flange shape bolt head 13b of secure component 13, institute Both thermal insulation board 40 and vacuum heat-insulation component 20C can be fixedly installed to container body 300 with secure component 13.

In addition, the specific structure of secure component 13 is not particularly limited, as long as having pressing vacuum heat-insulation component 20C's The flange part of welding layer 28 and the structure that vacuum heat-insulation component 20C and thermal insulation board 40 can be mechanically fixed, it will be able to use Well known structure other than bolt.In addition, when secure component 13 is bolt, when the length of bolt axle portion 13a preferably fastens The length of insufficient container body 300.Thereby, it is possible to inhibit external heat to be transmitted to container body 300 via secure component 13 Heat bridge (hot bridge).In other words, the thickness that the length of bolt axle portion 13a can be less than first thermal insulation layer 301 (is less than The thickness of thermal insulation board 40).

In addition, in present embodiment, using the welding layer 28 using bolt head 13b pressing vacuum heat-insulation component 20C Structure, but at this point, the flange with the broadening bigger than bolt head 13b can also be set in bolt head 13b.From spiral shell Pin section 13a sees that bolt head 13b is to extend " flange part " from bolt axle portion 13a.The bolt head is utilized in order to improve 13b presses the effect of welding layer 28, and bolt head 13b can also have flange.Therefore, secure component 13 is also possible to flanged nut Bolt.Alternatively, substitution and the integrated flange of bolt head 13b, also can be used the washer (washer) broadened greatly.

Herein, it can also be applied on the opposite face with thermal insulation board 40 of vacuum heat-insulation component 20C, a part or the whole of face Apply bonding agent.Thereby, it is possible to fixed using secure component 13, and vacuum heat-insulation can also be bonded in the outer surface of thermal insulation board 40 Component 20C and install, so can be improved the adhesion of vacuum heat-insulation component 20C and thermal insulation board 40.The specific type of bonding agent It is not particularly limited, but can it is preferable to use hot melt adhesive classes.

In addition, Figure 11 is although not shown, but the part (docking section) that the end face of vacuum heat-insulation component 20C is abutted each other is set To offset one from another position with the mutual docking section in the end face of thermal insulation board 40.In addition, what the outer peripheral edge of vacuum heat-insulation component 20C was formed The sealing 24 (sealing fin) of fin-shaped, which is folded into the inner surface (i.e. 301 side of first thermal insulation layer) as low temperature side, to be configured.

[vacuum heat-insulation component]

Vacuum heat-insulation component 20C for second thermal insulation layer 302 is for example as shown in figure 12, have substantially with above-mentioned implementation The same structure of vacuum heat-insulation component 20B illustrated in the vacuum heat-insulation component 20A or above embodiment 2 illustrated in mode 1.

Specifically, vacuum heat-insulation component 20C, pyroconductivity λ ratio is passed as the heat of thermal insulation board 40 (foamed styrene) About low 15 times or so of conductance (at 0 DEG C, be 0.002W/mK), become will in core material 21 packet depressurized in external cladding material 22 it is close The plate closed.

External cladding material 22 is the layer being made of sealer 221, gas barrier layer 222 and hot welding layer 223 as described above Lamination 220.The specific structure of external cladding material 22 is not particularly limited, for example, can enumerate sealer 221 is thickness 35 μm nylon membrane, the aluminium foil that gas barrier layer 222 is 7 μm of thickness, the low density polyethylene films that hot welding layer 223 is 50 μm of thickness and They are laminated to the laminated film of obtained three-decker.

In addition, the specific structure of core material 21 is it is not also specifically limited, can for example enumerate avarage fiber diameter is 4 μm What glass fibre was fired.In addition, the specific structure of adsorbent 23 is it is not also specifically limited, either based on calcium oxide The adsorbent of raw material is also possible to the adsorbent being made of as described above ZSM-5 type zeolite.ZSM-5 type zeolite is excellent The copper position for being selected in its copper position at least 50% or more is one price of copper, and at least 50% the above are three oxygen of coordination in one price of copper The structure of one price of copper.Like this, using the adsorbent for the copper monovalence bit rate for improving three oxygen of coordination, it can be improved room temperature Under N2 adsorption characteristic, therefore the adsorbance of air can be greatly improved.In addition, the shape of adsorbent 23 does not also limit especially System, but if be it is powdered, can be improved surface area, improve absorption property.

The manufacturing method of vacuum heat-insulation component 20C is not particularly limited, such as can use following process.Firstly, with (external cladding material 22) two panels of laminates 220 of above structure is overlapped by the opposite mode of mutual hot welding layer 223, is removed A part, by surrounding welding.Never the part (opening portion) of welding is enclosed internal by core material 21 and adsorbent 23 and depressurizes, Welding opening portion.Weld and its exterior portion as a result, core material 21 is not present in inside, and is configured to external cladding material 22 The sealing 24 being fused to each other, it is internal to become the area of insulation after decompression compared with weld.

In addition, adsorbent 23, the inside of external cladding material 22 is enclosed as closed container, but in welding outer cladding material After reduced pressure sealing is completed in the opening portion of material 22, applies external force from the outside of external cladding material 22, thus container breaks a seal.By This, adsorbent 23 can adsorb the gas of the inside (area of insulation after decompression) of vacuum heat-insulation component 20C.

Herein, as described above, being provided with the through portion 27 for fastening secure component 13 in vacuum heat-insulation component 20C. Through portion 27 as shown in figure 11, is configured to include the position for penetrating through the through hole of vacuum heat-insulation component 20C.As described above, passing through The inner circumferential in logical portion 27 is provided with the welding layer that the external cladding material 22 of vacuum heat-insulation component 20C touches each other as shown in figure 13 28.In the welding layer 28, core material 21 is not included, so having the structure substantially same with sealing 24.

The size of the through portion 27 of vacuum heat-insulation component 20C, the i.e. diameter of through hole are not particularly limited, can be according to each Condition is suitably set.For example, can enumerate secure component 13 bolt head 13b (or bolt head 13b can have it is convex Edge) size, the conditions such as width of the thickness of vacuum heat-insulation component 20C, welding layer 28.

The position of the through portion 27 of vacuum heat-insulation component 20C is not particularly limited, as long as being as far as possible vacuum heat-insulation component 20C The inside in broadening face be preferably provided near the central portion of vacuum heat-insulation component 20C as shown in figure 13.It is inciting somebody to action as a result, When vacuum heat-insulation component 20C is fixed on thermal insulation board 40, the stress for being applied to vacuum heat-insulation component 20C can be dispersed.Therefore, energy The deformation for enough inhibiting vacuum heat-insulation component 20C, can be avoided or mitigate the deterioration of the decline of heat-proof quality, external cladding material 22 Deng.In other words, the position of through portion 27 is set to as vacuum heat-insulation component 20C fixed using secure component 13, fastening part Bolt head 13b (or bolt head 13b can have flange) portion of part 13 is not stretched from the outer rim of vacuum heat-insulation component 20C Out.Thus, it is possible to avoid through portion 27 from being arranged near the periphery of vacuum heat-insulation component 20C.

Like this, the vacuum heat-insulation component 20C of present embodiment have substantially with above-mentioned vacuum heat-insulation component 20A or The same structure of vacuum heat-insulation component 20B, but as shown in figure 13, at least part of its outer surface can also be provided with filling Heat-barrier material 14.The specific structure of filling with insulation material 14 is not particularly limited, but the diameter that can enumerate fiber is lower than 1 μm Micro- mineral wool.Such a micro- mineral wool is soft and rich in retractility, and can be realized good thermal insulation.In addition, filling The specific structure of heat-barrier material 14 is not limited to micro- mineral wool, also can suitably select flexibel polyurethane, phenol formaldehyde foam, hard polyurethane The softness such as ester foam and the material rich in retractility.In particular, phenol formaldehyde foam or hard polyurethane foams can select to approach appearance The linear expansion coefficient of device main body 300, it is advantageous to.

In vacuum heat-insulation component 20C shown in Figure 13, it is integrally provided with filling with insulation material 14 in its front, but as long as extremely The gap of the mutual docking section in end of vacuum heat-insulation component 20C is set less.Thereby, it is possible to inhibit or avoid external heat Enter from docking section or cold and hot from docking section leakage.

In addition, ZSM-5 type zeolite is non-flame properties adsorbent as described above, so can be avoided as adsorbent 23 Use combustible material.Even if as a result, because causing the imflammable gas such as LNG to enter vacuum heat-insulation component by deterioration etc. at any time The inside of 20C also can effectively avoid the danger such as combustion fire, the stability of vacuum heat-insulation component 20C and explosion-proof can be made good. In addition, inorfil is used as core material 21, so can change compared with using organic fiber in vacuum heat-insulation component 20C Kind flame retardancy.Therefore, it can be improved the flame retardancy of heat-insulated container 153 itself.

[utilizing the holding of the LNG of heat-insulated container]

First thermal insulation layer 301 of the heat-insulated container 153 of above structure using configuration in the outside of container body 300 is (heat-insulated Plate 40) and configuration second thermal insulation layer 302 (vacuum heat-insulation component 20C) on the outside it is heat-insulated, low temperature keeps LNG inside it. Herein, vacuum heat-insulation component 20C is fixed on thermal insulation board 40 using secure component 13 (bolt).At this point, bolt axle portion 13a is screwed to It is fastened in the fastener hole 41 of thermal insulation board 40, so the welding layer 28 being located at around through portion 27 is by secure component 13 (bolt) Bolt head 13b pressing.

If it is this structure, vacuum heat-insulation component 20C does not have to integrated with thermal insulation board 40, it will be able to be consolidated by through portion 27 It is scheduled on thermal insulation board 40.Thus, for example, as the plate that resin heat-barrier material and vacuum heat-insulation component are integrated, Neng Goufang Only because the difference of percent thermal shrinkage causes slab warping etc. to deform.Thereby, it is possible to inhibit or avoid the thermal insulation layer as caused by buckling deformation Gap generation, so being able to suppress the decline of the heat-proof quality of heat insulating structure body 154.

In addition, the resin thermal insulation layer pull that the external cladding material 22 of vacuum heat-insulation component 20C will not be integrated is flexible, So the deterioration of external cladding material 22 can also be inhibited well.Therefore, even if because anti-in the variation thermal insulation board 40 of use environment It appears again existing thermal contraction, also can be avoided and is stretched with the external cladding material 22 of thermal contraction vacuum heat-insulation component 20C by pull repeatedly It contracts and is cracked.As a result, it is possible to the thermal insulation of vacuum heat-insulation component 20C is well maintained for a long time, so can make heat-insulated Container 153 it is excellent in reliability.

In addition, the thermal insulation board 40 for constituting first thermal insulation layer 301 is made of foamed styrene.Even if being protected as a result, from inside The conduction (leakage rate of ultralow temperature) of low temperature occurs for the cryogenic substance (LNG etc.) held, also can be in the universe of first thermal insulation layer 301 Reduce the deviation of the conduction of ultralow temperature.As a result, the Temperature Distribution of the outer surface of first thermal insulation layer 301 is also opposite to reduce deviation. As a result, and the Temperature Distribution of second thermal insulation layer 302 that contacts of first thermal insulation layer 301 also deviation is smaller, can become and be regarded as substantially Impartial situation.

Therefore, in the vacuum heat-insulation component 20C for constituting second thermal insulation layer 302, the unevenness for being able to suppress Temperature Distribution is led The deviation of the thermal contraction of the external cladding material 22 of cause, so also can effectively inhibit cracking caused by the deviation being heat-shrinked.As a result Be, can longer-term be well maintained the thermal insulation of vacuum heat-insulation component 20C.

In other words, vacuum heat-insulation component 20C configuration is in the outer surface of first thermal insulation layer 301, so the cryogenic substances such as LNG arrive The distance of vacuum heat-insulation component 20C can be regarded as roughly equal in universe.Therefore, can be considered as in the complete of second thermal insulation layer 302 Domain, conduction (leakage rate of ultralow temperature) of the ultralow temperature from cryogenic substance to vacuum heat-insulation component 20C are roughly equal.As a result, true The Temperature Distribution in the face that empty heat insulating component 20C is contacted with first thermal insulation layer 301 can also be considered as roughly equal.Therefore, Neng Gouyou Effect inhibits the temperature distributing disproportionation of the external cladding material 22 of vacuum heat-insulation component 20C, so being able to suppress external cladding material 22 The deviation of telescopic level, the result is that the degree that the cracking that external cladding material 22 can be greatly reduced occurs.

In addition, in the present embodiment, using the outside of vacuum heat-insulation component 20C covering first thermal insulation layer 301, so also The surface temperature for being able to suppress first thermal insulation layer 301 is deviated because of environmental condition.As a result, it is possible to further suppress and the The generation of the cracking of the external cladding material 22 of the vacuum heat-insulation component 20C of one thermal insulation layer 301 contact.

In addition, in the mutual docking section in end of vacuum heat-insulation component 20C, filled with filling with insulation material such as micro- mineral wools 14.As described above, micro- mineral wool is soft and is rich in retractility, so even if with the changes in temperature of outside air correspondingly vacuum heat-insulation structure Part 20C occurs minimum flexible, and filling with insulation material 14 also flexible can correspondingly stretch with this.As a result, it is possible to effectively press down The crack failure etc. of the flexible caused external cladding material 22 of system limitation vacuum heat-insulation component 20C, so can ensure for a long time good Good heat-proof quality.

In addition, in the present embodiment, the pyroconductivity λ ratio of vacuum heat-insulation component 20C constitute first thermal insulation layer 301 (every Hot plate 40) low about 15 times of foamed styrene or so.Therefore, the knot being only made of first thermal insulation layer 301 with heat insulating structure body 154 Structure is compared, and the present invention of the second thermal insulation layer 302 including being made of vacuum heat-insulation component 20C can greatly improve its thermal insulation Energy.

Moreover, vacuum heat-insulation component 20C can sufficiently apply flexibly its high heat-proof quality and cut off outside air heat.Therefore, The inside of vacuum heat-insulation component 20C, that is, the atmosphere temperature for being provided with the part of first thermal insulation layer 301 decline to a great extent, so can Relatively improve heat insulation possessed by first thermal insulation layer 301 itself.Therefore, have by vacuum heat-insulation component 20C itself High heat insulation and first thermal insulation layer 301 opposite heat-insulated solidified synergistic effect, heat insulating structure body 154 can be made Heat-proof quality is very high.

In addition, vacuum heat-insulation component 20C is that have aeration using 22 vacuum sealing of external cladding material for having laminated film to constitute Core material 21 structure, which is folded into 301 side of first thermal insulation layer.Therefore, can effectively inhibit via inside not Heat leak occurs for the sealing 24 with core material 21.Therefore, in addition to sufficiently apply flexibly vacuum heat-insulation component 20C heat insulation every Outside thermal effect, additionally it is possible to effectively play the heat insulation for reducing the atmosphere temperature of first thermal insulation layer 301.Thereby, it is possible to substantially mention The heat-proof quality of high heat insulating structure body 154.

In addition, in the present embodiment, the core material 21 of vacuum heat-insulation component 20C utilizes inorfil, so can make the Two thermal insulation layers 302 play a role as fire retardantization layer.Therefore, even if fire occurs in outside, heat insulating structure body can also be utilized 154 inhibit fire spread to heat-insulated container 153.

In addition, in the present embodiment, vacuum heat-insulation component 20C is configured to a column in the outermost wall side of heat-insulated container 153. Therefore, with the prior art (by vacuum heat-insulation component and thermal insulation board it is Chong Die side by side configuration on the basis of make vacuum heat-insulation component and connect Stitch the structure of overlapping) it compares, it can be avoided the increase of the usage quantity of vacuum heat-insulation component 20C.It is used for as a result, it is possible to reduce The material and manufacturing cost of heat-insulated container 153.

In addition, in the present embodiment, can not only inhibit second brought by the cryogenic heat transfer inside spherical tank 150 The deformation of thermal insulation layer 302, additionally it is possible to inhibit the change of vacuum heat-insulation component 20C caused by the variation of the environmental condition of outer surface side Shape.For example, part and in the shade part on the sunny side is easy to produce the unevenness of heat distribution when spherical tank 150 is by sunlight.Such as Fruit is the template heat-barrier material (resin heat-barrier material and the integrated plate of vacuum heat-insulation component) of the prior art, then due to sunlight Caused heat distribution is uneven, and the thermal expansion degree part of vacuum heat-insulation component and resin heat-barrier material is different.Therefore, it is easy in plate It is middle to generate above-mentioned buckling deformation, but if can also then inhibit deformation caused by this sunlight using present embodiment.

(embodiment 5)

In above embodiment 4, the first thermal insulation layer 301 of heat insulating structure body 154 is constituted by one layer of 40 structure of thermal insulation board At, however, the present invention is not limited thereto, in present embodiment 5, first thermal insulation layer 301 can be by two layers or two layers or more of thermal insulation board 40 are constituted.

For example, illustrating in basic structure and above embodiment 4 in the heat insulating structure body 154 of the structure shown in Figure 14 Heat insulating structure body 154 it is identical, but first thermal insulation layer 301 by shell body-side layers 301a and outer layer 301b multiple layers (two layers or Three layers or more) it constitutes.In the present embodiment, constitute shell body-side layers 301a thermal insulation board 40 and constitute outer layer 301b every Hot plate 40 is made of material of the same race, but can also be made of respectively different materials.

In the case where shell body-side layers 301a and outer layer 301b use thermal insulation board 40 not of the same race respectively, preferably comprise outer The pyroconductivity for the thermal insulation board 40 that the thermal conductivity ratio of the thermal insulation board 40 of side layer 301b constitutes shell body-side layers 301a is low.It is outer as a result, The heat-proof quality of side layer 301b is higher than the heat-proof quality of shell body-side layers 301a, so can reduce the temperature of shell body-side layers 301a, So the heat-proof quality of first thermal insulation layer 301 can be further increased.

According to above structure, in the outer surface of the container body 300 of heat-insulated container 153, by the way that shell body-side layers 301a is laminated First thermal insulation layer 301 is formed with outer layer 301b.Therefore, even if ultralow temperature is from the low of the inside for being stored in container body 300 Warm content leaks, it is also desirable to via two layers of thermal insulation board 40.So ultralow temperature, which can be greatly decreased, is transmitted to vacuum heat-insulation component 20C and leak.

Thereby, it is possible to effectively inhibit the external cladding material 22 of vacuum heat-insulation component 20C because of the ultralow temperature from cryogenic substance Leakage lead to low temperature brittleness.As a result, it is possible to effectively inhibit the cracking deterioration of external cladding material 22, so can further grow Phase effectively keeps the heat-proof quality of heat insulating structure body 154.

In other words, in said structure, the first thermal insulation layer between container body 300 and vacuum heat-insulation component 20C 301 are divided into the thermal insulation board 40 of the thermal insulation board 40 of shell side and outside and are arranged.Therefore, it is formed between this two layers thermal insulation board 40 Air layer, it is thus isolated as the continuity on the substance of first thermal insulation layer 301.That is, thermal insulation board 40 is foamed styrene system When, in said structure, first thermal insulation layer 301 is the two-layer structure of foamed styrene, so the foaming benzene second with single layer structure Alkene layer is compared, and the continuity of the thickness direction of layer is not present.Thereby, it is possible to reduce the leakage rate of ultralow temperature.The result is that energy The low temperature brittleness of enough external cladding materials 22 for further effectively inhibiting vacuum heat-insulation component 20C, can be avoided low temperature brittleness institute band The cracking deterioration come.

In addition, in heat insulating structure body 154 shown in figure 15, basic structure and heat insulating structure body shown in above-mentioned Figure 14 154 is identical, but in the outside for the second thermal insulation layer 302 being made of vacuum heat-insulation component 20C, is additionally provided with third thermal insulation layer 303. The heat-barrier material 42 for constituting the third thermal insulation layer 303 both can be with 40 identical type of thermal insulation board for constituting first thermal insulation layer 301 Material is also possible to different materials.

Heat-barrier material 42 is for example equally configured to plate with thermal insulation board 40, is mounted on second thermal insulation layer using well known method 302.For example, hot melt adhesive class bonding agent can be applied using the substantially central portion of the heat-barrier material 42 in plate, with vacuum heat-insulation The structure of the outer surface bonding installation of component 20C.

According to above structure, other than first thermal insulation layer 301 and second thermal insulation layer 302, also there is third thermal insulation layer 303 Heat insulation, so can make constitute second thermal insulation layer 302 vacuum heat-insulation component 20C outside temperature decline.As a result, The heat-proof quality of second thermal insulation layer 302 can not only be improved, additionally it is possible to further suppress the front and first of second thermal insulation layer 302 The deviation of positive each Temperature Distribution of thermal insulation layer 301, realizes the further homogenization of Temperature Distribution.It therefore, can be into one Step effectively inhibits to send out in the external cladding material 22 of vacuum heat-insulation component 20C due to the temperature distributing disproportionation of first thermal insulation layer 301 Raw cracking, being capable of the further permanently effective heat-proof quality for keeping heat insulating structure body 154.

In addition, basic structure and above-mentioned Figure 14 or shown in figure 15 are heat-insulated in the heat insulating structure body 154 shown in Figure 16 Structural body 154 is same, but is not will constitute the sealing 24 of the vacuum heat-insulation component 20C of second thermal insulation layer 302 to fold into and arrive conduct 301 side of first thermal insulation layer (inside) of low temperature side, but the sealing 24 of adjacent vacuum heat-insulation component 20C is overlapped each other and is matched It sets.The position in lap seal portion 24 both can be inside (301 side of first thermal insulation layer or appearance as shown in the dotted line in the left side of Figure 16 300 side of device main body), can also be outside (surface layer side or outer surface side) as shown in the dotted line on the right side of Figure 16.

If it is this structure, although also related with the structure of heat insulating structure body 154, it is able to suppress because folding into sealing 24 cause heat back into first thermal insulation layer 301 heat bridge generation.As a result, it is possible to further increase heat insulating structure body 154 heat-proof quality.

(embodiment 6)

In present embodiment 6, as shown in Figure 17 and Figure 18, in order to fill the through portion 27 of vacuum heat-insulation component 20C Gap, using the structure of configuration space object (spacer) 15,16.

For example, constituting the welding layer 28 of the vacuum heat-insulation component 20C of second thermal insulation layer 302 in the structure shown in Figure 17 Between thermal insulation board 40, it is equipped with spacer 15.Welding layer 28 is pressed by the bolt head 13b of secure component 13, so penetrating through In portion 27, it is successively overlapped bolt head 13b, welding layer 28 and spacer 15 from top to down.

In addition, in the structure shown in Figure 18, other than the structure shown in Figure 17, in bolt head 13b and welding layer 28 Between be additionally provided with spacer 16.Therefore, in through portion 27, it is successively overlapped bolt head 13b from top to down, spacer 16, melts Connect layer 28 and spacer 15.

In addition, the specific structure of spacer 15,16 is not particularly limited, as long as such as foamed styrene or polyurethane foam Or the like the material with heat-proof quality.

According to this structure, the gap generated in through portion 27, especially welding layer 28 and thermal insulation board 40 can be filled Gap or the gap of bolt head 13b and welding layer 28.As a result, it is possible to inhibit in through portion 27 near welding layer 28 Gap have the case where air trapping, the heat-proof quality of second thermal insulation layer 302 can be further increased.In addition, being passed through by landfill The gap in logical portion 27, can be improved the flatness of the vacuum heat-insulation component 20C entirety including through portion 27.

Like this, the heat-insulated container 153 of embodiment 4~6, in the outer of the first thermal insulation layer 301 being made of thermal insulation board 40 Side configures the second thermal insulation layer 302 that is made of vacuum heat-insulation component 20C, is arranged through portion 27 in the vacuum heat-insulation component 20C, and one Welding layer 28 around the bolt head 13b pressing through portion 27 of lateral dominance secure component 13, on one side consolidates bolt axle portion 13a It is scheduled on thermal insulation board 40.Thereby, it is possible to while greatly improving the heat-proof quality of heat insulating structure body 154, additionally it is possible to long-term to keep Its high heat-proof quality.

In addition, the present invention is not limited to the structure of present embodiment, it can of course in the range of achieving the object of the present invention It makes various changes.For example, in the present embodiment, instantiating the spherical tank of LNG transfer pot ship 100B as heat-insulated container 153 150, but the present invention can also be suitable for embodiment 7 as be described hereinafter shown in land setting LNG tank, or for medical treatment or The heat-insulated containers such as the cryo-conservation container of industry.In addition, as long as the substance saved such as liquid hydrogen it is not also specifically limited, to compare Low 100 DEG C of room temperature or more of substance.

In addition, the heat-insulated container as present embodiment 4~6, can also include each structure being exemplified below.That is, this hair Bright structure also can be such that a kind of heat-insulated container for keeping cryogenic substance, above-mentioned heat-insulated container have configuration in container casing Outside thermal insulation layer, above-mentioned thermal insulation layer at least has configuration in the first thermal insulation layer on vessel shell side and configuration than above-mentioned the One thermal insulation layer leans on the second thermal insulation layer of outer side, and above-mentioned cryogenic substance is saved with 100 DEG C lower than room temperature or more of temperature, and on Stating second thermal insulation layer is to be accommodated in core material to depressurize closed obtained vacuum heat-insulation component in bag, is set in above-mentioned vacuum heat-insulation component It is equipped with through portion.

According to above structure, it is not necessary to by vacuum heat-insulation component and the integrally-formed plate of hard polyurethane foams, it will be able to logical It crosses through portion and fixes vacuum heat-insulation component with first thermal insulation layer.Thereby, it is possible to prevent due to hard polyurethane foams box vacuum The percent thermal shrinkage difference of heat insulating component causes integrated slab warping etc. to deform.In addition, can prevent by the deformation of plate and every The decline of heat-proof quality caused by gap is generated between thermosphere.It is stretched in addition, can prevent the outer bag of vacuum heat-insulation component from being pulled Outer bag caused by contracting passes through deterioration at any time.

It, can also be by welding layer that external cladding material touches each other around through portion in the heat-insulated container of above structure It constitutes.Vacuum heat-insulation component can be fixed to first thermal insulation layer using the part of welding layer as a result,.It therefore, can not be to core Material fixes vacuum heat-insulation component with bringing damage, can further prevent the decline of heat-proof quality.

In the heat-insulated container of above structure, it may be configured as follows: vacuum heat-insulation component and pass through around through portion The welding layer that external cladding material touches each other is pressed using bolt head and is fixed.As a result, in addition to that can not be brought to core material Except the fixed vacuum heat-insulation component in damage ground, additionally it is possible to welding layer not be fixed with bringing damage.It therefore, can be further Prevent the decline of heat-proof quality and the deterioration of outer bag.

In the heat-insulated container of above structure, bolt can also be constituted with the length of insufficient container casing.Thereby, it is possible to press down The heat of outside air processed is transmitted to the heat bridge phenomenon of container casing by bolt.Therefore, it can be improved heat-proof quality.

In the heat-insulated container of above structure, through portion can also be constituted with circle.Perforation is constituted with polygon as a result, The case where portion, compares, and can mitigate the stress for being applied to through portion.Therefore, can further prevent heat-proof quality decline and The deterioration of outer bag.

In the heat-insulated container of above structure, it can also not stretched out from the outer rim of vacuum heat-insulation component using bolt head Structure.Through portion is arranged near the central part of vacuum heat-insulation component as a result,.Therefore, vacuum is applied to when can make fixed The stress of heat insulating component disperses.As a result, it is possible to the deformation of vacuum heat-insulation component be further prevented, so can further prevent The decline of heat-proof quality and the deterioration of outer bag.

(embodiment 7)

The heat-insulated container of above embodiment 1~6 is the ship inner canister being arranged on LNG transfer pot ship 100A as shown in Figure 1 The spherical tank 150 being arranged on 110 or LNG transfer pot ship 100B as shown in Figure 10, however, the present invention is not limited thereto.In this implementation In mode 7, the LNG tank of land setting shown in such as Figure 19~Figure 21 is illustrated.

Figure 19 shows ground type LNG tank 120.Being internally provided in concrete body 121 of ground type LNG tank 120 Can body with dual " heat-insulated slot structure ", upper surface are closed by roof portion 122.In can body is followed successively by from inside The stepped construction of slot 123, inside thermal insulation layer 124, outer groove 125 and outside thermal insulation layer 126, by inside groove 123 and inside thermal insulation layer 124 " the heat-insulated slot structure " for constituting inside is made of " the heat-insulated slot structure " in outside outer groove 125 and outside thermal insulation layer 126.

Concrete body 121 is for example made of prestressed concrete, is arranged on ground 50.Concrete body 121 It is to support the supporting mass of the structure of can body of ground type LNG tank 120, but can body is once damaged, can be used as preventing interior The barrier layer that the LNG in portion is leaked out plays a role.

Inside groove 123 is, for example, the resistance to indent being made of the steel of low temperature, and outer groove 125 is, for example, the steel structure by room temperature At slot.The inside thermal insulation layer 124 being held between inside groove 123 and outer groove 125, such as be made of foaming bodies such as pearlite.Separately On the one hand, the outside thermal insulation layer 126 being held between concrete body 121 and outer groove 125, by above embodiment 1 or 2 The thermal insulation board 10 (Fig. 5 A, Fig. 5 B or Fig. 6 A, Fig. 6 B) of explanation is constituted.Alternatively, although not shown, outside thermal insulation layer 126 can also be by The heat insulating structure body 154 illustrated in above embodiment 4~6 is constituted.

Roof portion 122 is substantially integrated with can body in the present embodiment.Therefore, roof portion 122 and can body are same Sample is made of inside groove 123, inside thermal insulation layer 124, outer groove 125 and outside thermal insulation layer 126 (i.e. thermal insulation board 10).In addition, Figure 19 In, the thermal insulation board 10 as outside thermal insulation layer 126 is shown in a manner of directly exposing, but can also be in addition laminated with for protecting The protective layer of thermal insulation board 10.

Figure 20 shows underground type LNG tank 130.The underground type LNG tank 130 is also with ground type LNG tank 120 equally in concrete Structural body 131 is internally provided with the can body with dual " heat-insulated slot structure ", and upper surface is closed by roof portion 132. Can body is followed successively by the stacking knot of film inside groove 133, inside thermal insulation layer 134, film outer groove 135 and outside thermal insulation layer 136 from inside Structure is made of " the heat-insulated slot structure " of inside film inside groove 133 and inside thermal insulation layer 134, by film outer groove 135 and outside thermal insulation layer 136 constitute " the heat-insulated slot structure " in outside.

Concrete body 131 is also same as the concrete body 121 of ground type LNG tank 120, such as is mixed by prestressing force Solidifying soil is constituted, and is arranged in ground in such a way that it is predominantly located in the lower section on ground 50.Concrete body 131 be supportedly under The supporting mass of the structure of the can body of formula LNG tank 130, and as the blocking for preventing LNG leakage damaged in case of can body contingency Layer plays a role.

A film 113 and secondary film 115 for the ship inner canister 110 of film inside groove 133 and film outer groove 135 and above embodiment 1 Again it is as keeping in order to avoid " slot " metal film that plays a role leaked out in inner space LNG.

The inside thermal insulation layer 134 being held between film inside groove 133 and film outer groove 135, also and in ground type LNG tank 120 Side thermal insulation layer 134 is same, such as is made of foaming bodies such as pearlite.In addition, being held on concrete body 131 and film outer groove Outside thermal insulation layer 136 between 135, by the thermal insulation board 10 (Fig. 5 A, Fig. 5 B or Fig. 6 A, Fig. 6 B) illustrated in above embodiment 1 It constitutes.Alternatively, although not shown, outside thermal insulation layer 126 can also be by the heat insulating structure body 154 that illustrates in above embodiment 4~6 It constitutes.

Roof portion 132 in the present embodiment, is separately constructed with can body, so the outermost layer in roof portion 132 and ground The roof portion 122 of formula LNG tank 120 is same, is provided with the outside thermal insulation layer 136 being made of thermal insulation board 10, but in roof portion 132 It is internally provided with fibrous heat-barrier material 33.The threadiness heat-barrier material 33 can for example be enumerated as vacuum heat-insulation component 20A The inorganic fiber of the core material 21 of~20C.In addition, directly exposing in Figure 20 as the thermal insulation board 10 of outside thermal insulation layer 136 Mode is shown, but can also in addition be laminated with the protective layer for protecting thermal insulation board 10.

Figure 21 is shown and different types of ground type LNG tank 160 shown in Figure 19.The ground type LNG tank 160 include with it is upper The same spherical heat-insulated container 164 of spherical tank 150 of the illustration of embodiment 3 or 4 is stated as can body, the heat-insulated container 164 It is supported on ground 50 by supporting structure portion 161.Supporting structure portion 161 in vertical direction for example by being set on ground 50 Multiple pillars 162 and the composition of support (brace) 163 being arranged between pillar 162, but be not particularly limited.

Heat-insulated container 164 includes the outside for keeping the container casing 166 of cryogenic substance and the container casing 166 being arranged in Heat insulating structure body 165.Illustrate in the specific structure of container casing 166 and heat insulating structure body 165 and above embodiment 4~6 Equally, especially heat insulating structure body 165 can be suitably using the structure or appropriately combined of any one in above embodiment 4~6 The structure that the structure of these embodiments obtains.

In this way, it includes: the internal fluid guarantor for having and keeping fluid that heat-insulated container of the invention, which is in the inside of container casing, Hold first slot in space, the outside that first slot is set first thermal insulation layer, be arranged in the first thermal insulation layer outside Dual " the heat-insulated slot structure " of two slots and the second thermal insulation layer in the outside that second slot is set, and on the outermost side Second thermal insulation layer has the structure of thermal insulation board 10.

Specifically, then hull 111 is equivalent to container casing, once if it is the ship inner canister 110 of above embodiment 1 Film 113 is equivalent to the first slot, and primary anti-hot tank 114 is equivalent to first thermal insulation layer, and secondary film 115 is equivalent to the second slot, secondary anti- Hot tank 116 is equivalent to second thermal insulation layer, and in the present embodiment, concrete body 121,131 is equivalent to container casing, inside groove 123 or film inside groove 133 be equivalent to the first slot, inside thermal insulation layer 124 or 134 is equivalent to first thermal insulation layer, outer groove 125 or film outer groove 135 are equivalent to the second slot, and outside thermal insulation layer 126 or 136 is equivalent to second thermal insulation layer.

Moreover, second thermal insulation layer can be made of secondary anti-hot tank 116 and thermal insulation board 10 as shown in above embodiment 1, But can also be as in the present embodiment, second thermal insulation layer is only made of thermal insulation board 10.Conversely, in the ship of above embodiment 1 In inner canister 110, as long as also meeting the necessary condition of IGC rule, second thermal insulation layer, Huo Zhe only can also be constituted by thermal insulation board 10 In the ground type LNG tank 120 or underground type LNG tank 130 of present embodiment, thermal insulation board 10 and other heat-insulated materials also can be used together Material constitutes second thermal insulation layer.

In addition, in the present invention, as long as being provided with the structure for supporting the can body on the outside of can body (or as content The load of the LNG of object) structural body, then at least either in the first slot and the second slot can also be by metal membrane material structure At.

For example, in board there are hulls 111 in the outside of tank 110, so the first slot and second in above embodiment 1 Slot is made of membrane material.In addition, in the present embodiment, in underground type LNG tank 130, concrete body 131 is embedded in ground Under, so the first slot and the second slot are made of membrane material.

In addition, on the ground in formula LNG tank 120, as long as also concrete body 121 can also support can body and LNG Load, and meet the various necessary conditions and legal provisions of related LNG storage, at least one of the first slot and the second slot can also be with It is made of membrane material.Alternatively, second slot can not be made of membrane material, and be set to by as structure in underground type LNG tank 130 " slot " (such as same as the outer groove 125 of ground type LNG tank 120) of body.

(embodiment 8)

In above embodiment 1~7, the fluid kept in heat-insulated container is LNG, however, the present invention is not limited thereto, fluid As long as the fluid kept with 100 DEG C lower than room temperature or more of temperature.In present embodiment 8, illustrate hydrogen as LNG with Outer fluid.It is specifically described referring to an example of Figure 22 to the hydrogen tank of liquefaction holding hydrogen.

As shown in figure 22, the hydrogen tank 140 of present embodiment is container (container) type, is substantially had and above-mentioned reality Apply the ground type LNG tank 120 or underground type LNG tank illustrated in the ship inner canister 110 or above embodiment 2 illustrated in mode 1 130 same structures.That is, hydrogen tank 140 has inside groove 143 and outer groove 145 in the slot supporting mass 141 of frame-shaped, in these inside grooves It is provided with internal thermal insulation layer 144 between 143 and outer groove 145, the outside of outer groove 145 is provided with outer insulative layer 146.

Therefore, in the present embodiment, slot supporting mass 141 is equivalent to container casing, and inside groove 143 is equivalent to the first slot, interior Portion's thermal insulation layer 144 is equivalent to first thermal insulation layer, and outer groove 145 is equivalent to the second slot, and it is heat-insulated that outer insulative layer 146 is equivalent to second Layer.Moreover, as thermal insulation layer 126,136 on the outside of above embodiment, as second thermal insulation layer outer insulative layer 146 by every Hot plate 10 is constituted.In addition, outer insulative layer 146 both can be only made of thermal insulation board 10, it can also be such as above embodiment 1 In secondary anti-hot tank 116 constitute second thermal insulation layer like that and with thermal insulation board 10 and other heat-barrier materials.

In addition, as internal thermal insulation layer 144, such as using the metal materials such as aluminium to be vaporized on to the membrane material layer obtained on substrate Fold it is multiple obtained from heat-barrier material is laminated.In addition, by the state for maintaining decompression between inside groove 143 and outer groove 145, it is internal Thermal insulation layer 144 plays a role as " stacking vacuum heat-insulation component ".In the present embodiment, above-mentioned thermal insulation board can also be used 10 substitute this internal thermal insulation layer 144.In this case, first thermal insulation layer and second thermal insulation layer both include to utilize vacuum The thermal insulation board 10 that heat insulating component 20A or 20B are constituted.Alternatively, also can be using the heat-insulated knot illustrated in above embodiment 4~6 Structure body 154.

In addition, the specific structure of slot supporting mass 141, inside groove 143, outer groove 145 is not particularly limited, it can be using well known Various structures, in addition, the specific structure of hydrogen tank 140 is not limited to the structure of container type shown in Figure 22, either above-mentioned implementation Pot in the ship illustrated in mode 1 is also possible to the tank of land setting type illustrated in above embodiment 2, can also be it The tank of his form.

In general, liquefying hydrogen (liquid hydrogen) is the liquid of -253 DEG C of extremely low temperature, and evaporation is played compared with LNG and is easy Degree is about 10 times.Therefore, horizontal with LNG same evaporation loss in order to obtain for liquefying hydrogen, it needs to further increase heat-insulated The heat-proof quality of material (pyroconductivity is small).In this regard, in present embodiment, in second thermal insulation layer (outer insulative layer 146) use The thermal insulation board 10 stated, therefore further high insulation is realized to hydrogen tank 140.

In addition, the fluid kept in heat-insulated container in the present invention is not limited to LNG or hydrogen, as long as lower than room temperature With the substance of mobility at a temperature of 100 DEG C or more.As the fluid other than LNG and hydrogen, liquefaction stone can be enumerated Oil gas (LPG) the others hydrocarbon gas or the imflammable gas comprising these.Or it is also possible in chemical tanks ship (tank car) etc. It is needed in the various compounds of transport in the at a temperature of compound that saves lower than 100 DEG C of room temperature or more.In addition, room temperature is 20 DEG C In the range of ± 5 DEG C (in the range of 15 DEG C~25 DEG C).

In addition, the present invention is not limited to the records of the respective embodiments described above, it is able to carry out within the scope of the claims various Change, different embodiments or multiple variations are also wrapped with the appropriately combined obtained embodiment of each disclosed technical solution It is contained in technical scope of the invention.

(embodiment)

Based on embodiment, comparative example and reference example, the present invention is more particularly described, however, the present invention is not limited thereto.This Field technical staff can make various changes, modifications and variations without departing from the scope of the present invention.

(calculation method of evenly heat through-flow rate)

According to the hot-fluid calculating method of JIS A 1412, ASTM C518 and ISO 8301, Eko Instruments Trading is utilized The pyroconductivity measuring instrument (goods number HC-074-300 or HC-074-066) of (EKO Instruments Co., Ltd.) system, The pyroconductivity for each thermal insulation layer that heat insulating structure body is constituted in the heat-insulated container of following comparative example or embodiment is carried out Measurement.At this point, the internal temperature of heat-insulated container is set as -160 DEG C, outside air is set as 25 DEG C.According to obtained pyroconductivity Evenly heat through-flow rate with the thickness of each thermal insulation layer using Area-weighted averagely to calculate heat insulating structure body.

(embodiment 1)

In the outside of the spherical container casing 300 of aluminum, setting has first thermal insulation layer 301 and second thermal insulation layer 302 Heat insulating structure body 154, thus obtain the heat-insulated container 153 of embodiment 1.In each thermal insulation layer of heat insulating structure body 154, as One thermal insulation layer 301, using the thermal insulation board 40 of foamed styrene, as second thermal insulation layer 302 using being said in above embodiment 4 The vacuum heat-insulation component 20C of bright structure.In addition, the thickness of the thickness T of 154 entirety of heat insulating structure body, first thermal insulation layer 301 T1 and the thickness t2 of second thermal insulation layer 302 are as shown in table 1.It is passed through using the evenly heat that the above method calculates the heat-insulated container 153 Flow rate.The calculated result of evenly heat through-flow rate, the evaluation result of heat-proof quality on the basis of aftermentioned comparative example 1 and with The ratio of thickness on the basis of comparative example 1 is as shown in table 1.

(comparative example 1)

In addition to other than the outside of container casing 300 is provided with without the comparison heat insulating structure body of second thermal insulation layer 302, It is the same as in example 1 above to form heat insulating structure body, heat-insulated container is compared in acquisition.In addition, in relatively heat insulating structure body, it is heat-insulated The whole thickness of structural body 154 is similarly to Example 1.Thickness T, t1 and the t2 for comparing heat insulating structure body are as shown in table 1.It utilizes The above method calculates the evenly heat through-flow rate of the comparison heat-insulated container.The calculated result of evenly heat through-flow rate is as shown in table 1.Separately Outside, comparative example 1 is the benchmark of heat-proof quality and Thickness Evaluation, so in table 1, the evaluation result of heat-proof quality and the ratio of thickness Result be recorded as " 1.00 ".

(embodiment 2)

Other than reducing the thickness of first thermal insulation layer 301, the heat-insulated of embodiment 2 is obtained in the same manner as in the above embodiment 1 Container 153.The present embodiment 2 is to evaluate the heat insulating structure body 154 on the basis of playing with 1 same heat-proof quality of comparative example Which kind of degree whole thickness can be thinned to.In addition, thickness T, t1 and t2 of the heat insulating structure body 154 of embodiment 2 such as 1 institute of table Show.The evenly heat through-flow rate of the heat-insulated container 153 is calculated using the above method.The calculated result of evenly heat through-flow rate, with than Ratio compared with the evaluation result of the heat-proof quality on the basis of example 1 and the thickness on the basis of comparative example 1 is as shown in table 1.

[table 1]

The thickness and result [unit] of thermal insulation layer	Comparative example 1	Embodiment 1	Embodiment 2
				The thickness T [mm] of heat insulating structure body	400	400	250
The total thickness t 1 [mm] of first thermal insulation layer and second thermal insulation layer	400	380	230
				The thickness t2 [mm] of third thermal insulation layer	0	20	20
Evenly heat through-flow rate [W/m²·K]	0.061	0.044	0.061
				The ratio between heat-proof quality	1.00	1.28	1.00
The ratio between thickness of heat insulating structure body	1.00	1.00	0.63

(comparison of embodiment 1,2 and comparative example 1)

As shown in table 1, the heat insulating structure body 154 of embodiment 1 heat insulating structure body compared with has same thickness, but evenly heat Through-flow rate is lower, and heat-proof quality improves 28%.On the other hand, the heat insulating structure body 154 of embodiment 2 heat insulating structure body compared with Heat-proof quality having the same, but integral thickness reduces 37%.

In accordance with the invention it is possible to which the plate thickness of vacuum heat-insulation component 20C is set as by the thickness for substantially reducing first thermal insulation layer 301 When 20mm, the thickness of first thermal insulation layer 301 can be reduced 170mm.Therefore, corresponding to the thickness of first thermal insulation layer 301 is reduced Ground can increase the volume of heat-insulated container 153.Therefore, as long as the present invention is used as example using the boil-off gas of LNG as fuel The spherical tank 150 of the LNG transfer pot ship 100B used, then be able to suppress the usage amount of LNG, can be improved economy.In addition, By in the LNG transfer pot ship 100B of the re-liquefied type of LNG boil-off gas, the energy loss re-liquefied for this can reduce.

(embodiment 3)

The overall thickness for contemplating the first thermal insulation layer 301 being made of thermal insulation board 40 is set as 300mm, by vacuum heat-insulation component The thickness for the second thermal insulation layer 302 that 20C is constituted is set as the heat insulating structure body 154 of 100mm, to the heat insulating structure body 154, carries out Imagine from LNG temperature (- 162 DEG C) to the thermal simulation of the temperature gradient of room temperature (25 DEG C).The chain-dotted line I institute of the result such as Figure 23 Show.

(comparative example 2)

In addition to imagining the more heat-insulated knot being made of without second thermal insulation layer 302 thermal insulation board of overall thickness 400mm 40 Other than structure body, thermal simulation has equally been carried out with above-described embodiment 3.Its result is as shown in the dotted line II of Figure 23.

(comparison of embodiment 3 and comparative example 2)

From the analog result of Figure 23 it is found that in the comparison heat insulating structure body of comparative example 2, as shown in dotted line II, temperature with away from The distance (i.e. the thickness of thermal insulation layer) of the inner wall of container casing proportionally rises, but in the heat insulating structure body of embodiment 3 154 In, as shown in chain-dotted line I, the thermal gradient angle of thermal insulation board 40 (first thermal insulation layer 301) is small, vacuum heat-insulation component 20C (second every Thermosphere 302) thermal gradient angle it is big.Therefore, of the invention, it can reduce that there are the using the heat-proof quality of second thermal insulation layer 302 The atmosphere temperature in the region of one thermal insulation layer 301 (thermal insulation board 40).In addition, the thermophoresis of the cold temperature of first thermal insulation layer 301 itself It reduces (the thermal gradient angle of 0~300mm of chain-dotted line I is gentle), it may thus be appreciated that improving the heat-insulated of first thermal insulation layer 301 itself Performance.

As shown in the above description, to those skilled in the art, many improvement of the invention and other embodiment party Formula is obvious.Therefore, above description should be construed as exemplary only, and be to instruct those skilled in the art real It applies optimal embodiment of the invention and provides.In the state of not departing from spirit of the invention, it can be substantially changed The details of structure and/or function.

Industrial availability

The present invention can be suitable for wide scope ship inner canister, the LNG tank or hydrogen tank of land setting of LNG transfer pot ship Deng the field of the heat-insulated container of the temperature holding fluid with 100 DEG C lower than room temperature or more.

The explanation of appended drawing reference

10 thermal insulation boards

The front 10a cortex

10b lateral cortical

11 foamed resin layers

12 bonding agents

13 secure components

13a bolt axle portion

13b bolt head (flange part of secure component)

20 vacuum heat-insulation components

21 core materials

22 external cladding materials (overcoating part)

23 adsorbents

24 sealings (sealing fin)

25 opening portions

26A check-valves (expansion easing portion)

26B check-valves (expansion easing portion)

27 through portions

28 welding layers

40 thermal insulation boards

100A LNG transfer pot ship

110 ship inner canisters (heat-insulated container)

111 hulls (container casing)

113 films (the first slot, membrane material)

114 primary anti-hot tanks (first thermal insulation layer)

115 2 films (the second slot, membrane material)

116 2 anti-hot tanks (second thermal insulation layer)

120 ground type LNG tanks

121 concrete bodies (container casing)

123 inside grooves (the first slot)

124 inside thermal insulation layers (first thermal insulation layer)

125 outer grooves (the second slot)

126 outside thermal insulation layers (second thermal insulation layer)

130 underground type LNG tanks

131 concrete bodies (container casing)

133 film inside grooves (the first slot, membrane material)

134 inside thermal insulation layers (first thermal insulation layer)

135 film outer grooves (the second slot, membrane material)

136 outside thermal insulation layers (second thermal insulation layer)

140 hydrogen tanks

141 slot supporting masses (container casing)

143 inside grooves (the first slot)

144 inside thermal insulation layers (first thermal insulation layer)

145 outer grooves (the second slot)

146 outer insulative layers (second thermal insulation layer)

100B LNG transfer pot ship

150 spherical tanks

151 hulls

153 heat-insulated containers

154 heat insulating structure bodies

220 laminates

221 sealers

222 gas barrier layers

223 hot welding layers

224 thermal welding sealers

241 thinner wall sections

242 thick wall portions

243 intensity decline position (expansion easing portion)

300 container casings

301 first thermal insulation layers

302 second thermal insulation layers

Claims

1. a kind of heat-insulated container characterized by comprising

Inside has the container body for the fluid retaining space that fluid is kept with 100 DEG C lower than room temperature or more of temperature；

Heat insulating structure body；With

The container casing in the outside of the heat insulating structure body is set,

The heat insulating structure body is the multilayer for including first thermal insulation layer with the second thermal insulation layer in the outside that the first thermal insulation layer is arranged in Structural body,

The second thermal insulation layer includes vacuum heat-insulation component,

The vacuum heat-insulation component includes the core material for the threadiness being made of mineral-type materials and bag-shaped outer with gas barrier property Covering material is enclosed the core material in the inside of the external cladding material to depressurize air-tight state and is constituted, and has and inhibit Or the blast resistance construction of the vacuum heat-insulation component sharply deformed is prevented,

The blast resistance construction realizes that the expansion easing portion is when residual and expansion easing portion is arranged in the external cladding material Gas discharges the residual gas to outside in the internal expansion of the external cladding material and expands to mitigate,

The external cladding material has for the opening portion depressurized inside bag,

The inner surface of the opening portion is hot welding layer,

In the sealing formed by the thermal welding of the opening portion, a part at the mutual welding position of hot welding layer Other positions of welding area ratio are small, alternatively, the heat seal strength ratio of a part at the mutual welding position of the hot welding layer Other described positions are low.