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JP7435149B2 - high pressure tank - Google Patents
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JP7435149B2 - high pressure tank - Google Patents

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JP7435149B2
JP7435149B2 JP2020058340A JP2020058340A JP7435149B2 JP 7435149 B2 JP7435149 B2 JP 7435149B2 JP 2020058340 A JP2020058340 A JP 2020058340A JP 2020058340 A JP2020058340 A JP 2020058340A JP 7435149 B2 JP7435149 B2 JP 7435149B2
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pressure tank
expanded graphite
tank
protector
lattice
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JP2021156382A (en
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裕則 中村
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Toyota Motor Corp
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Toyota Motor 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

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  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Description

本発明は、高圧タンクに関する。 The present invention relates to a high pressure tank.

プロテクタを備えた高圧タンクが利用されている。一例として、水素を貯蔵する水素タンクとして、現状、タンクのバルブ側にはウレタンのプロテクタ、エンド側にはウレタン（第１層）と膨張黒鉛（第２層）の２層構造のプロテクタが設定されたものがある（例えば、特許文献１参照）。この構造は、例えば車両火災等で水素タンクが高熱にさらされた時、バルブ側であればＰＲＤ（溶栓弁）によってガスが抜かれる一方で、エンド側からの高熱ではバルブでのガス抜きができないため熱で膨張する膨張黒鉛で断熱することを可能とする。なお、参考図として示す図１（Ｂ）中において符号３６’で「ウレタン部」、符号３４で「膨張黒鉛部」をそれぞれ示している。 High pressure tanks with protectors are used. As an example, hydrogen tanks that store hydrogen currently have a urethane protector on the valve side of the tank, and a two-layer protector of urethane (first layer) and expanded graphite (second layer) on the end side. (For example, see Patent Document 1). With this structure, when a hydrogen tank is exposed to high heat due to a vehicle fire, for example, gas is vented from the valve side by a PRD (fusible plug valve), but if high heat comes from the end side, the gas is not vented by the valve. Since this is not possible, it is possible to insulate with expanded graphite, which expands with heat. In FIG. 1B, which is shown as a reference drawing, the reference numeral 36' indicates a "urethane part" and the reference numeral 34 indicates an "expanded graphite part."

このようなプロテクタ構造は、断熱性能を有する膨張黒鉛を含んでいるという点において、機能面で優れているということができる。 Such a protector structure can be said to be functionally superior in that it contains expanded graphite that has heat insulating properties.

特開２０１９－１２０２６３号公報JP 2019-120263 Publication

しかし、コスト面に着目した場合、ＥＡ（Energy Absorption）構造として比較的安価な構造である樹脂ＥＡリブ構造が存在するにもかかわらず、従来のプロテクタ構造においてはこれを採用することが難しかった。その理由としては、樹脂ＥＡリブ構造が格子状の樹脂リブからなる構造であるがゆえ、高熱にさらされた時にタンク本体に伝わる熱を断熱する特性をもたせることが難しいということを挙げることができる。 However, from a cost perspective, although there is a resin EA rib structure which is a relatively inexpensive structure as an EA (Energy Absorption) structure, it has been difficult to employ this structure in conventional protector structures. The reason for this is that since the resin EA rib structure is made up of lattice-shaped resin ribs, it is difficult to insulate the heat transmitted to the tank body when exposed to high heat. .

そこで、本発明は、より安価な格子状樹脂リブを利用しつつタンクを十分に保護することができる構造の高圧タンクを提供することを目的とする。 Therefore, an object of the present invention is to provide a high-pressure tank having a structure that can sufficiently protect the tank while making use of cheaper lattice-shaped resin ribs.

本発明の一態様は、タンクの外表面に補強層を備え、補強層上にプロテクタを有する高圧タンクにおいて、
プロテクタは、格子状の樹脂リブと、樹脂リブの格子内に設けられた膨張黒鉛とから形成されてなる、高圧タンクである。 One aspect of the present invention is a high-pressure tank that includes a reinforcing layer on the outer surface of the tank and has a protector on the reinforcing layer.
The protector is a high-pressure tank formed of lattice-shaped resin ribs and expanded graphite provided within the lattice of the resin ribs.

かかる構造においては、衝撃吸収機能を格子状の樹脂リブが担い、断熱機能を膨張黒鉛が担うため、安価な格子状樹脂リブを利用してもタンクを十分に保護することができる。 In such a structure, the lattice-shaped resin ribs have a shock absorbing function, and the expanded graphite has a heat-insulating function, so that the tank can be sufficiently protected even when inexpensive lattice-shaped resin ribs are used.

本発明によれば、より安価な格子状樹脂リブを利用しつつタンクを十分に保護することができる構造の高圧タンクを提供することができる。 According to the present invention, it is possible to provide a high-pressure tank having a structure that can sufficiently protect the tank while making use of cheaper lattice-shaped resin ribs.

（Ａ）本発明の一実施形態における高圧タンクの構成例を示す部分断面図と、（Ｂ）従来構造の一例を参考として示す部分断面図である。(A) A partial sectional view showing a configuration example of a high-pressure tank according to an embodiment of the present invention, and (B) a partial sectional view showing an example of a conventional structure for reference.

以下、図を参照しつつ、燃料電池車における高圧タンクの実施形態を説明する（図１（Ａ）参照）。 Hereinafter, an embodiment of a high-pressure tank in a fuel cell vehicle will be described with reference to the drawings (see FIG. 1(A)).

図１に、高圧タンクの構成例を示す。本実施形態の高圧タンク１０は、当該タンクの外表面に補強層２０を備え、補強層２０上にプロテクタ３０が設けられている。プロテクタ３０は、樹脂リブ３２と、膨張黒鉛部３４とを含む。 FIG. 1 shows an example of the configuration of a high-pressure tank. The high-pressure tank 10 of this embodiment includes a reinforcing layer 20 on the outer surface of the tank, and a protector 30 is provided on the reinforcing layer 20. Protector 30 includes resin ribs 32 and expanded graphite portions 34.

樹脂リブ３２は、格子状に形成された部材（樹脂状樹脂ＥＡリブ部材）からなる（図１参照）。樹脂リブ３２は、当該高圧タンク１０が落下した際、あるいは当該高圧タンク１０に外力が作用した際の衝撃や荷重（耐落下衝撃等の荷重）を吸収して緩和する。樹脂リブ３２自体は、従前の高圧タンク１０において採用されているものと同様のものであって構わない。 The resin rib 32 is made of a member (resin-like resin EA rib member) formed in a lattice shape (see FIG. 1). The resin ribs 32 absorb and relieve the impact and load (loads such as drop impact resistance) when the high-pressure tank 10 falls or when an external force acts on the high-pressure tank 10. The resin ribs 32 themselves may be similar to those employed in the conventional high-pressure tank 10.

膨張黒鉛部３４は、膨張黒鉛から形成される部位である。本実施形態では、上述の樹脂リブ３２の間あるいは格子内に膨張黒鉛を充填して膨張黒鉛部３４を形成している（図１参照）。膨張黒鉛を充填するにあたっては、膨張黒鉛部３４の成形時に樹脂リブ３２をインサートして成形する手法を採用することができる。膨張黒鉛部３４は、高熱タンク１０が例えば車両火災等によって高熱状況下に晒された場合に膨張し、当該高圧タンク１０を断熱して高熱から保護するように機能する。膨張黒鉛自体は、従前の高圧タンク１０において採用されているものと同様のものであって構わない。 The expanded graphite portion 34 is a portion formed from expanded graphite. In this embodiment, the expanded graphite portion 34 is formed by filling expanded graphite between the resin ribs 32 or within the lattice (see FIG. 1). In filling the expanded graphite, a method can be adopted in which resin ribs 32 are inserted and molded when the expanded graphite portion 34 is molded. The expanded graphite portion 34 expands when the high-temperature tank 10 is exposed to a high-temperature situation due to, for example, a vehicle fire, and functions to insulate the high-pressure tank 10 and protect it from high heat. The expanded graphite itself may be the same as that used in the conventional high-pressure tank 10.

上記のごとき構造のプロテクタ３０を備えた高圧タンク１０においては、衝撃吸収機能を格子状の樹脂リブ３２が担い、断熱機能を膨張黒鉛部３４が担うため、高圧タンク１０を十分に保護することができる。しかも、比較的安価である樹脂リブ３２を採用したことから費用対効果やコストパフォーマンスに優れるプロテクタ３０を備えた高圧タンク１０を実現することができる。 In the high-pressure tank 10 equipped with the protector 30 having the structure described above, the lattice-shaped resin ribs 32 have a shock absorption function, and the expanded graphite portions 34 have a heat-insulating function, so that the high-pressure tank 10 can be sufficiently protected. can. Moreover, since the relatively inexpensive resin ribs 32 are employed, it is possible to realize a high-pressure tank 10 equipped with a protector 30 that is excellent in cost effectiveness and cost performance.

なお、以上説明した実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。実施形態が備える各要素並びにその配置、材料、条件、形状およびサイズ等は、例示したものに限定されるわけではなく適宜変更することができる。また、異なる実施形態で示した構成同士を部分的に置換し又は組み合わせることが可能である。 Note that the embodiments described above are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. Each element included in the embodiment, as well as its arrangement, material, conditions, shape, size, etc., are not limited to those illustrated and can be changed as appropriate. Further, it is possible to partially replace or combine the structures shown in different embodiments.

本発明は、高圧タンクに適用して好適である。 The present invention is suitable for application to high pressure tanks.

１０…高圧タンク、２０…補強層、３０…プロテクタ、３２…樹脂リブ、３４…膨張黒鉛部、３６’…ウレタン部 DESCRIPTION OF SYMBOLS 10... High pressure tank, 20... Reinforcement layer, 30... Protector, 32... Resin rib, 34... Expanded graphite part, 36'... Urethane part

Claims (1)

タンクの外表面に補強層を備え、前記補強層上にプロテクタを有する高圧タンクにおいて、
前記プロテクタは、格子状の樹脂リブと、樹脂リブの格子内に充填して設けられた膨張黒鉛とから形成されてなる、高圧タンク。 A high-pressure tank including a reinforcing layer on the outer surface of the tank and having a protector on the reinforcing layer,
The protector is a high-pressure tank formed of lattice-shaped resin ribs and expanded graphite filled in the lattice of the resin ribs.
JP2020058340A 2020-03-27 2020-03-27 high pressure tank Active JP7435149B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001099325A (en) 1999-09-28 2001-04-10 Oiles Ind Co Ltd Spherical zone seal material and manufacture thereof
JP2001206161A (en) 2000-01-28 2001-07-31 Toyota Autom Loom Works Ltd Body of automobile
JP2003202079A (en) 2001-11-05 2003-07-18 If Japan Kk Protector for high-pressure container
JP2004003604A (en) 2002-04-18 2004-01-08 Hamamatsu Gasket Corp Gasket for exhaust pipe and exhaust pipe joint provided with the same
WO2014054251A1 (en) 2012-10-05 2014-04-10 トヨタ自動車株式会社 Pressure vessel and production method therefor
JP2018138452A (en) 2016-12-12 2018-09-06 ザ・ボーイング・カンパニーＴｈｅ Ｂｏｅｉｎｇ Ｃｏｍｐａｎｙ Additively manufactured reinforced structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476189A (en) * 1993-12-03 1995-12-19 Duvall; Paul F. Pressure vessel with damage mitigating system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001099325A (en) 1999-09-28 2001-04-10 Oiles Ind Co Ltd Spherical zone seal material and manufacture thereof
JP2001206161A (en) 2000-01-28 2001-07-31 Toyota Autom Loom Works Ltd Body of automobile
JP2003202079A (en) 2001-11-05 2003-07-18 If Japan Kk Protector for high-pressure container
JP2004003604A (en) 2002-04-18 2004-01-08 Hamamatsu Gasket Corp Gasket for exhaust pipe and exhaust pipe joint provided with the same
WO2014054251A1 (en) 2012-10-05 2014-04-10 トヨタ自動車株式会社 Pressure vessel and production method therefor
JP2018138452A (en) 2016-12-12 2018-09-06 ザ・ボーイング・カンパニーＴｈｅ Ｂｏｅｉｎｇ Ｃｏｍｐａｎｙ Additively manufactured reinforced structure

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