JP4359079B2 - Insulation structure of gas filler - Google Patents

Insulation structure of gas filler Download PDF

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Publication number
JP4359079B2
JP4359079B2 JP2003173387A JP2003173387A JP4359079B2 JP 4359079 B2 JP4359079 B2 JP 4359079B2 JP 2003173387 A JP2003173387 A JP 2003173387A JP 2003173387 A JP2003173387 A JP 2003173387A JP 4359079 B2 JP4359079 B2 JP 4359079B2
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gas
filling body
heat
heat insulating
gas filling
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JP2005009553A (en
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真一 浦田
武男 神野
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Zojirushi Corp
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Zojirushi Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Thermal Insulation (AREA)
  • Fuel Cell (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は水素やヘリウム等のガスが充填されたガス充填体の外側を断熱する断熱構造に関する。
【０００２】
【従来の技術】
近年、都市ガス等の原燃料から生成した水素と酸素を反応させて発電する燃料電池が開発されている。この燃料電池には、脱硫した原燃料に水蒸気を加えて反応させることにより水素を生成する改質器と、該改質器で得られた水素を利用して発電するセルスタックとが設けられているが、これらは約７００℃の高温になるため、断熱構造が採用されている。断熱構造としては、断熱材のほか、真空断熱構造が考えられる。
【０００３】
燃料電池のセルスタックの少なくとも一部を真空断熱容器で覆うものが提案されている（例えば、特許文献１参照）し、また燃料電池本体の周囲に配置される断熱材層の少なくとも一部に真空断熱層を設けるものも提案されている（例えば、特許文献２参照）。
【０００４】
【特許文献１】
特開平８−１３８７２１号公報
【特許文献２】
特開２００２−２８００４１号公報
【０００５】
【発明が解決しようとする課題】
しかし、前述のような真空断熱構造は、改質器やセルスタックから遊離する水素が真空断熱構造の壁を透過して内部に浸入し、内圧を上げて断熱性を低下させるという問題がある。このような問題は、燃料電池だけでなく、大型水素タンク（球形）の外表面に配設される断熱パネルにおいても生じている。
【０００６】
本発明は前記問題点に鑑みてなされたもので、真空断熱構造の断熱性を低下させることなくガス充填体を断熱することができるガス充填体の断熱構造を提供することを課題とする。
【０００７】
【課題を解決するための手段】
前記課題を解決するために、本発明は、内部に水素が封入されたガス充填体の外側に真空二重構造の断熱体を配設し、該断熱体と前記ガス充填体との間の隙間に多孔性材料からなる通気層を介在させ、ガス充填体から遊離する水素を前記通気層を介して外部に排出するものである。
【０００８】
ここで、ガス充填体は、燃料電池の改質器やセルスタックのような水素を取り扱う機器のほか、球形タンクのような容器、ガス配管を含む。断熱体は、有底筒状の容器、板状のパネルを含む。通気層は、ガスが通過する隙間や空間、あるいはその隙間に配置された多孔性材料を含む概念である。
【０００９】
前記構成により、ガス充填体から遊離するガスは、通気層で拡散して濃度と温度が低下し、該通気層を通って外部に排出されるので、真空二重構造の断熱体の内部にはほとんど浸入しない。したがって、断熱体の断熱性は維持される。
【００１０】
この場合、前記ガス充填体と前記多孔性材料との間にガラス板を介在させてもよい。
【００１１】
前記多孔性材料は、セラミックボードとすることが好ましい。また、前記ガラス板は石英ガラスとすることが好ましい。
【００１２】
前記断熱体の内側部材と外側部材はステンレス鋼とすることができる。
【００１３】
前記断熱体の内側部材と外側部材はガラスとすることもできる。この場合、前記ガラスは石英ガラスまたはホウ珪酸ガラスであることが好ましい。
【００１４】
前記断熱体の内側部材と外側部材の間にゲッターを設置することができる。
【００１５】
前記断熱体は有底筒状の容器であり、該容器の中に前記ガス充填体を挿入することができる。この場合、前記容器の上端開口縁の上方に前記通気層と連通する隙間を設けることが好ましい。
【００１６】
前記断熱体は板状のパネルであり、前記ガス充填体は球形であってその外側に前記パネルを複数配設することができる。この場合、前記複数のパネルの相互間に前記通気層と連通する隙間を設けることが好ましい。
【００１７】
【発明の実施の形態】
以下、本発明の実施の形態を添付図面に従って説明する。
【００１８】
図１は、参考例のガス充填体の断熱構造を示す。１は、ガス充填体であり、具体的には燃料電池の改質器の一部である。ガス充填体１の内部には約７００℃の高温の水素２が充填されている。ガス充填体１は断熱体３により通気層４を介して断熱されている。断熱体３は、ステンレス鋼等の金属からなる内側部材５と外側部材６との間の空間を真空引きしてなる真空二重構造を有し、有底筒状の容器である。通気層４は、断熱体３の内側部材５と、断熱体３内に挿入されるガス充填体１との間に存在する隙間７からなっている。断熱体３の上端開口縁８とガス充填体１の間にも隙間９が形成されている。
【００１９】
この参考例では、ガス充填体１から遊離する水素２は通気層４に入り、ここで拡散して濃度と温度が低下し、該通気層４を上方に流動して断熱体３の上端開口縁８の上方の隙間９から外部に排出されるので、断熱体３の真空層１０にはほとんど浸入しない。したがって、断熱体３の断熱性は維持される。
【００２０】
以下の実施形態において、前記参考例と同一の部材には同一の符号を附して説明を省略する。
【００２１】
図２は、本発明の第１実施形態によるガス充填体１の断熱構造を示す。ガス充填体１と断熱体３の間には、内容器１１が挿入されている。この内容器１１は、多孔性材料であるセラミックボードからなり、有底筒状に形成されるとともに、上端開口縁１２にフランジ１３が形成されている。ガス充填体１は断熱体３により内容器１１を介して断熱されている。
【００２２】
この第１実施形態では、ガス充填体１から遊離する水素２は破線矢印で示すようにセラミックボードの内容器１１に入り、ここで拡散して濃度と温度が低下し、該内容器１１内を拡散して上方に流動し、フランジ１３から外部に排出されるので、断熱体３の真空層１０にはほとんど浸入しない。したがって、断熱体３の断熱性は維持される。
【００２３】
図３は、本発明の第２実施形態によるガス充填体の断熱構造を示す。ガス充填体１と断熱体３の間には、内容器１４が挿入されている。この内容器１４は、多孔性材料であるセラミックボードからなる内層１５と石英ガラス板からなる外層１６とで、有底筒状に形成されるとともに、上端開口縁１７にフランジ１８が形成されている。ガス充填体１は断熱体３により内容器１４を介して断熱されている。
【００２４】
この第２実施形態では、ガス充填体１から遊離する水素２は破線矢印で示すように内容器１４のセラミックボードからなる内層１５に入り、ここで拡散して濃度と温度が低下し、該内層１５内を拡散して上方に流動し、フランジ１８から外部に排出されるので、断熱体３の真空層１０にはほとんど浸入しない。一般にガラスは金属に比べて水素透過が少ないので、石英ガラス板からなる外層１６は、水素透過の障壁となる。したがって、断熱体３の断熱性は維持される。また、石英ガラスはホウ珪酸ガラスに比べて高温にも耐える。
【００２５】
図４は、本発明の第３実施形態によるガス充填体の断熱構造を示す。ガス充填体１と断熱体３の間には、内容器１９が挿入されている。この内容器１９は、多孔性材料であるセラミックボードからなる内層２０と、石英ガラス板からなる中間層２１と、多孔性材料であるセラミックボードからなる外層２２とで、有底筒状に形成されるとともに、上端開口縁２３にフランジ２４が形成されている。ガス充填体１は断熱体３により内容器１９を介して断熱されている。
【００２６】
この第３実施形態では、ガス充填体１から遊離する水素２は内容器１９のセラミックボードからなる内層２０に入り、ここで拡散して濃度と温度が低下し、該内層２０内を拡散して上方に流動し、フランジ２４から外部に排出されるので、断熱体３の真空層１０にはほとんど浸入しない。また、石英ガラス板からなる中間層２１は、水素透過の障壁となる。水素が内層２０および中間層２１を透過したとしても、さらに外層２２で拡散してフランジ２４から排出される。したがって、断熱体３の断熱性は維持される。
【００２７】
なお、前記図１の参考例、図２〜図４の第１、第２、第３実施形態において、断熱体３の内側部材５と外側部材６の間にゲッターを配設して、水素が少しでも浸入すれば当該ゲッターで吸着するようにしてもよい。
【００２８】
図５の他の参考例、図６から図８の第４、第５、第６実施形態は、それぞれ前記参考例、前記第１、第２、第３実施形態に対応しており、断熱体２５の内側部材２６と外側部材２７がステンレス鋼等の金属ではなくてガラスである点、断熱体２５の内側部材２６と外側部材２７の内部にゲッター２８を配設した点が相違する。
【００２９】
断熱体２５の内側部材２６と外側部材２７のガラス材料は、具体的には、石英ガラスまたはホウ珪酸ガラスである。ゲッター２８は少しでも浸入した水素ガスを吸着し、真空度を上げる働きをする。
【００３０】
これらの他の参考例、第４、第５、第６実施形態では、ガス充填体１から遊離する水素２が破線矢印で示すように拡散して外部に排出される点は、前記参考例、第１、第２、第３実施形態と同様である。遊離した水素２の温度に合わせて、断熱体３として石英ガラスまたはホウ珪酸ガラス等のガラス材を使用することができる。
【００３１】
以上の実施形態は、ガス充填体１が燃料電池の改質器の一部であり、断熱体３，２５が容器形状の場合の例であるが、本発明はこれに限らず、図９に示すように、ガス充填体３１が球形タンクであり、断熱体３２が前記球形タンク３１の外側に配設される板状のパネルである場合にも適用することができる。この第７実施形態では、ガス充填体３１と断熱体３２の間に通気層３３を設け、断熱体３２の相互間に前記通気層３３と連通する隙間３４を設ける。また、通気層３３として、多孔性材料であるセラミックボード３５のほか、単なる隙間としたり、セラミックボードと石英ガラス板との積層体、セラミックボードと石英ガラス板とセラミックボードの積層体を設けることができる。作用としては、前記実施形態と同様であるので説明を省略する。
【００３２】
【発明の効果】
以上の説明から明らかなように、本発明によれば、内部に水素が封入されたガス充填体の外側に真空二重構造の断熱体を配設し、該断熱体とガス充填体との間に通気層を設けたので、ガス充填体から遊離した水素が当該通気層を介して拡散し外部に排出されて、真空二重構造の断熱体の内部への浸入量がきわめて少なくなる。したがって、断熱体の断熱性は維持され、ガス充填体を確実に断熱することができる。
【図面の簡単な説明】
【図１】 参考例の断熱構造の断面図。
【図２】 本発明の第１実施形態の断面図。
【図３】 本発明の第２実施形態の断面図。
【図４】 本発明の第３実施形態の断面図。
【図５】 他の参考例の断熱構造の断面図。
【図６】 本発明の第４実施形態の断面図。
【図７】 本発明の第５実施形態の断面図。
【図８】 本発明の第６実施形態の断面図。
【図９】 本発明の第７実施形態の一部断面図。
【符号の説明】
１ ガス充填体
２ 水素
３ 断熱体
４ 通気層
５ 内側部材
６ 外側部材
７ 隙間
８ 上端開口縁
９ 隙間
１０ 真空層[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating structure that insulates the outside of a gas filling body filled with a gas such as hydrogen or helium.
[0002]
[Prior art]
In recent years, fuel cells that generate electricity by reacting hydrogen and oxygen generated from raw fuel such as city gas have been developed. This fuel cell is provided with a reformer that generates hydrogen by reacting steam with desulfurized raw fuel and a cell stack that generates electric power using the hydrogen obtained by the reformer. However, since these have a high temperature of about 700 ° C., a heat insulating structure is adopted. As the heat insulating structure, a vacuum heat insulating structure can be considered in addition to the heat insulating material.
[0003]
There has been proposed a structure in which at least a part of a cell stack of a fuel cell is covered with a vacuum heat insulating container (see, for example, Patent Document 1), and at least a part of a heat insulating material layer disposed around the fuel cell body is vacuum Providing a heat insulating layer has also been proposed (see, for example, Patent Document 2).
[0004]
[Patent Document 1]
JP-A-8-138721 [Patent Document 2]
JP 2002-280041 A
[Problems to be solved by the invention]
However, the vacuum heat insulating structure as described above has a problem that hydrogen liberated from the reformer and the cell stack permeates through the walls of the vacuum heat insulating structure and enters the inside, thereby increasing the internal pressure and reducing the heat insulating property. Such a problem occurs not only in the fuel cell but also in a heat insulating panel disposed on the outer surface of a large hydrogen tank (spherical shape).
[0006]
This invention is made | formed in view of the said problem, and makes it a subject to provide the heat insulation structure of the gas filling body which can insulate the gas filling body, without reducing the heat insulation of a vacuum heat insulation structure.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a vacuum double-structured heat insulator outside a gas filling body in which hydrogen is sealed, and a gap between the heat insulating body and the gas filling body. A gas-permeable layer made of a porous material is interposed between the gas and the hydrogen released from the gas filler, and the hydrogen is discharged to the outside through the gas-permeable layer.
[0008]
Here, the gas filling body includes a container such as a spherical tank and a gas pipe, in addition to a hydrogen handling device such as a fuel cell reformer and a cell stack. The heat insulator includes a bottomed cylindrical container and a plate-like panel. The ventilation layer is a concept including a gap or space through which gas passes, or a porous material disposed in the gap.
[0009]
With the above configuration, the gas liberated from the gas filling body diffuses in the ventilation layer and decreases in concentration and temperature and is discharged to the outside through the ventilation layer. Almost no penetration. Therefore, the heat insulating property of the heat insulating body is maintained.
[0010]
In this case, a glass plate may be interposed between the gas filler and the porous material.
[0011]
The porous material is preferably a ceramic board. The glass plate is preferably made of quartz glass.
[0012]
The inner member and the outer member of the heat insulator can be stainless steel.
[0013]
The inner member and the outer member of the heat insulator may be glass. In this case, the glass is preferably quartz glass or borosilicate glass.
[0014]
A getter can be installed between the inner member and the outer member of the heat insulator.
[0015]
The heat insulator is a bottomed cylindrical container, and the gas filling body can be inserted into the container. In this case, it is preferable to provide a gap communicating with the ventilation layer above the upper end opening edge of the container.
[0016]
The heat insulator is a plate-like panel, and the gas filler is spherical, and a plurality of the panels can be disposed outside the gas filler. In this case, it is preferable to provide a gap communicating with the ventilation layer between the plurality of panels.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0018]
FIG. 1 shows a heat insulating structure of a gas filling body of a reference example . Reference numeral 1 denotes a gas filler, specifically, a part of a reformer of a fuel cell. The gas filling body 1 is filled with high-temperature hydrogen 2 at about 700 ° C. The gas filling body 1 is thermally insulated by the heat insulating body 3 through the ventilation layer 4. The heat insulator 3 is a bottomed cylindrical container having a vacuum double structure in which a space between the inner member 5 and the outer member 6 made of metal such as stainless steel is evacuated. The ventilation layer 4 includes a gap 7 existing between the inner member 5 of the heat insulator 3 and the gas filler 1 inserted into the heat insulator 3. A gap 9 is also formed between the upper end opening edge 8 of the heat insulator 3 and the gas filler 1.
[0019]
In this reference example , hydrogen 2 liberated from the gas filling body 1 enters the ventilation layer 4, where it diffuses and decreases in concentration and temperature, and flows upward through the ventilation layer 4 to open the upper edge of the heat insulator 3. Since it is discharged to the outside through the gap 9 above 8, it hardly enters the vacuum layer 10 of the heat insulator 3. Therefore, the heat insulating property of the heat insulator 3 is maintained.
[0020]
In the following embodiments, the same members as those in the reference example are denoted by the same reference numerals and description thereof is omitted.
[0021]
FIG. 2 shows a heat insulating structure of the gas filling body 1 according to the first embodiment of the present invention. An inner container 11 is inserted between the gas filler 1 and the heat insulator 3. The inner container 11 is made of a ceramic board, which is a porous material, and is formed in a bottomed cylindrical shape, and a flange 13 is formed at the upper end opening edge 12. The gas filler 1 is insulated by the heat insulator 3 through the inner container 11.
[0022]
In this first embodiment, the hydrogen 2 liberated from the gas filling body 1 enters the inner container 11 of the ceramic board as indicated by the broken line arrow, diffuses here, and the concentration and temperature decrease, and the inside of the inner container 11 is reduced. Since it diffuses and flows upward and is discharged from the flange 13 to the outside, it hardly penetrates into the vacuum layer 10 of the heat insulator 3. Therefore, the heat insulating property of the heat insulator 3 is maintained.
[0023]
FIG. 3 shows a heat insulating structure of a gas filling body according to a second embodiment of the present invention. An inner container 14 is inserted between the gas filler 1 and the heat insulator 3. The inner container 14 is formed in a bottomed cylindrical shape with an inner layer 15 made of a ceramic board, which is a porous material, and an outer layer 16 made of a quartz glass plate, and a flange 18 is formed on the upper end opening edge 17. . The gas filler 1 is insulated by the heat insulator 3 through the inner container 14.
[0024]
In this second embodiment, the hydrogen 2 liberated from the gas filling body 1 enters the inner layer 15 made of the ceramic board of the inner container 14 as indicated by the broken line arrow, where it diffuses and decreases in concentration and temperature, and the inner layer Since it diffuses in 15 and flows upward and is discharged to the outside through the flange 18, it hardly penetrates into the vacuum layer 10 of the heat insulator 3. Since glass generally has less hydrogen permeation than metal, the outer layer 16 made of a quartz glass plate serves as a hydrogen permeation barrier. Therefore, the heat insulating property of the heat insulator 3 is maintained. Quartz glass also withstands higher temperatures than borosilicate glass.
[0025]
FIG. 4 shows a heat insulating structure of a gas filling body according to a third embodiment of the present invention. An inner container 19 is inserted between the gas filler 1 and the heat insulator 3. The inner container 19 is formed in a bottomed cylindrical shape with an inner layer 20 made of a ceramic board that is a porous material, an intermediate layer 21 made of a quartz glass plate, and an outer layer 22 made of a ceramic board that is a porous material. In addition, a flange 24 is formed at the upper end opening edge 23. The gas filler 1 is insulated by the heat insulator 3 through the inner container 19.
[0026]
In this third embodiment, the hydrogen 2 liberated from the gas filling body 1 enters the inner layer 20 made of the ceramic board of the inner container 19 where it diffuses and decreases in concentration and temperature, and diffuses in the inner layer 20. Since it flows upward and is discharged from the flange 24 to the outside, it hardly penetrates into the vacuum layer 10 of the heat insulator 3. The intermediate layer 21 made of a quartz glass plate serves as a hydrogen permeation barrier. Even if hydrogen permeates the inner layer 20 and the intermediate layer 21, it diffuses further in the outer layer 22 and is discharged from the flange 24. Therefore, the heat insulating property of the heat insulator 3 is maintained.
[0027]
Incidentally, reference example of FIG. 1, in the first, second, third implementation form of FIGS. 2-4, by disposing the getter between the inner member 5 and outer member 6 of the insulating member 3, hydrogen If it penetrates even a little, you may make it adsorb | suck with the said getter.
[0028]
Another reference example of FIG. 5, the fourth, fifth, sixth embodiment of FIGS. 6-8, the reference example, respectively, said first, second, corresponds to the third implementation mode, insulation The difference is that the inner member 26 and the outer member 27 of the body 25 are made of glass instead of a metal such as stainless steel, and the getter 28 is disposed inside the inner member 26 and the outer member 27 of the heat insulator 25.
[0029]
Specifically, the glass material of the inner member 26 and the outer member 27 of the heat insulator 25 is quartz glass or borosilicate glass. The getter 28 absorbs hydrogen gas that has entered even a little and works to increase the degree of vacuum.
[0030]
In these other reference examples, the fourth, fifth and sixth embodiments , the hydrogen 2 liberated from the gas filler 1 is diffused and discharged to the outside as indicated by the broken line arrows . first, second, it is the same as the third implementation form. A glass material such as quartz glass or borosilicate glass can be used as the heat insulator 3 in accordance with the temperature of the liberated hydrogen 2.
[0031]
The above embodiment is an example in which the gas filler 1 is a part of the reformer of the fuel cell and the heat insulators 3 and 25 are container-shaped, but the present invention is not limited to this, and FIG. As shown, the gas filling body 31 is a spherical tank and the heat insulating body 32 is a plate-like panel disposed outside the spherical tank 31. In the seventh embodiment , a ventilation layer 33 is provided between the gas filling body 31 and the heat insulator 32, and a gap 34 communicating with the ventilation layer 33 is provided between the heat insulators 32. In addition to the ceramic board 35 that is a porous material, the ventilation layer 33 may be a simple gap, a laminate of a ceramic board and a quartz glass plate, or a laminate of a ceramic board, a quartz glass plate, and a ceramic board. it can. Since the operation is the same as that of the above embodiment, the description thereof is omitted.
[0032]
【The invention's effect】
As is apparent from the above description, according to the present invention, a vacuum double-structured heat insulator is disposed outside the gas filling body in which hydrogen is enclosed, and the heat insulating body and the gas filling body are disposed between the heat filling body and the gas filling body. Since the vent layer is provided in the gas, hydrogen released from the gas filling body diffuses through the vent layer and is discharged to the outside, so that the amount of intrusion into the heat insulating body having the vacuum double structure is extremely reduced. Therefore, the heat insulation of the heat insulator is maintained, and the gas filler can be reliably insulated.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a heat insulating structure of a reference example .
FIG. 2 is a cross-sectional view of the first embodiment of the present invention.
FIG. 3 is a cross-sectional view of a second embodiment of the present invention.
FIG. 4 is a cross-sectional view of a third embodiment of the present invention.
FIG. 5 is a cross-sectional view of a heat insulating structure of another reference example .
FIG. 6 is a sectional view of a fourth embodiment of the present invention.
FIG. 7 is a sectional view of a fifth embodiment of the present invention.
FIG. 8 is a cross-sectional view of a sixth embodiment of the present invention.
FIG. 9 is a partial cross-sectional view of a seventh embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gas filling body 2 Hydrogen 3 Heat insulation body 4 Venting layer 5 Inner member 6 Outer member 7 Gap 8 Upper end opening edge 9 Gap 10 Vacuum layer

Claims (12)

内部に水素が封入されたガス充填体の外側に真空二重構造の断熱体を配設し、該断熱体と前記ガス充填体との間の隙間に多孔性材料からなる通気層を介在させ、ガス充填体から遊離する水素を前記通気層を介して外部に排出することを特徴とするガス充填体の断熱構造。  A vacuum double structure heat insulator is disposed outside the gas filling body in which hydrogen is sealed inside, and a ventilation layer made of a porous material is interposed in a gap between the heat insulating body and the gas filling body, A heat insulating structure for a gas filling body, wherein hydrogen released from the gas filling body is discharged to the outside through the ventilation layer. 前記多孔性材料と前記断熱体との間にガラス板を介在させたことを特徴とする請求項１に記載のガス充填体の断熱構造。  The heat insulating structure for a gas filler according to claim 1, wherein a glass plate is interposed between the porous material and the heat insulator. 前記多孔性材料は、セラミックボードである請求項１または２に記載のガス充填体の断熱構造。  The heat insulating structure for a gas filling body according to claim 1, wherein the porous material is a ceramic board. 前記ガラス板は石英ガラスからなることを特徴とする請求項２または３に記載のガス充填体の断熱構造。  The said glass plate consists of quartz glass, The heat insulation structure of the gas filling body of Claim 2 or 3 characterized by the above-mentioned. 前記断熱体の内側部材と外側部材はステンレス鋼からなることを特徴とする請求項１から４のいずれかに記載のガス充填体の断熱構造。  The heat insulation structure for a gas filling body according to any one of claims 1 to 4, wherein the inner member and the outer member of the heat insulator are made of stainless steel. 前記断熱体の内側部材と外側部材はガラスからなることを特徴とする請求項１から５のいずれかに記載のガス充填体の断熱構造。  The heat insulating structure for a gas filler according to any one of claims 1 to 5, wherein the inner member and the outer member of the heat insulator are made of glass. 前記ガラスは石英ガラスまたはホウ珪酸ガラスであることを特徴とする請求項６に記載のガス充填体の断熱構造。  The said glass is quartz glass or borosilicate glass, The heat insulation structure of the gas filling body of Claim 6 characterized by the above-mentioned. 前記断熱体の内側部材と外側部材の間に、ゲッターを設置したことを特徴とする請求項１から７のいずれかに記載のガス充填体の断熱構造。  The heat insulating structure for a gas filler according to any one of claims 1 to 7, wherein a getter is installed between an inner member and an outer member of the heat insulator. 前記断熱体は有底筒状の容器であり、該容器の中に前記ガス充填体を挿入することを特徴とする請求項１から８のいずれかに記載のガス充填体の断熱構造。  The heat insulating structure for a gas filling body according to any one of claims 1 to 8, wherein the heat insulating body is a bottomed cylindrical container, and the gas filling body is inserted into the container. 前記容器の上端開口縁の上方に前記通気層と連通する隙間を設けたことを特徴とする請求項９に記載のガス充填体の断熱構造。  The heat insulation structure for a gas filling body according to claim 9, wherein a gap communicating with the ventilation layer is provided above an upper end opening edge of the container. 前記断熱体は板状のパネルであり、前記ガス充填体は球形であってその外側に前記パネルを複数配設することを特徴とする請求項１から８のいずれかに記載のガス充填体の断熱構造。  The gas insulator according to any one of claims 1 to 8, wherein the heat insulator is a plate-like panel, the gas filler is spherical, and a plurality of the panels are disposed outside the gas filler. Thermal insulation structure. 前記複数のパネルの相互間に前記通気層と連通する隙間を設けたことを特徴とする請求項１１に記載のガス充填体の断熱構造。  The heat insulating structure for a gas filler according to claim 11, wherein a gap communicating with the ventilation layer is provided between the plurality of panels.
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