JP7219604B2 - High pressure tank device and fluid discharge method - Google Patents

High pressure tank device and fluid discharge method Download PDF

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JP7219604B2
JP7219604B2 JP2018235303A JP2018235303A JP7219604B2 JP 7219604 B2 JP7219604 B2 JP 7219604B2 JP 2018235303 A JP2018235303 A JP 2018235303A JP 2018235303 A JP2018235303 A JP 2018235303A JP 7219604 B2 JP7219604 B2 JP 7219604B2
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discharge
hole
fluid
pressure tank
liner
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JP2020097960A (en
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直貴 荻原
信 和田
ベラルディ マリオ
フランツォーニ マティア
サレリ パリード
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/005—Storage of gas or gaseous mixture at high pressure and at high density condition, e.g. in the single state phase
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K15/067—Mounting of tanks
    • B60K15/07—Mounting of tanks of gas tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/08—Integral reinforcements, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/16—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of plastics materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0114—Shape cylindrical with interiorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0184—Fuel cells
    • 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

Description

本発明は、補強層で覆われた樹脂製のライナの内部に流体を収容可能な高圧タンクを備える高圧タンク装置及び流体排出方法に関する。 TECHNICAL FIELD The present invention relates to a high-pressure tank device having a high-pressure tank capable of containing fluid inside a resin liner covered with a reinforcing layer, and a fluid discharge method.

流体を内側に収容可能な樹脂製のライナと、該ライナの外面を覆う繊維強化プラスチック等からなる補強層とを有する高圧タンクを備える高圧タンク装置が知られている。この種の高圧タンクでは、例えば、特許文献１に記載されるように、ライナを透過して、該ライナの外面と補強層との間（以下、被覆部ともいう）に流体が進入することがある。 2. Description of the Related Art A high-pressure tank device is known that includes a high-pressure tank that has a resin liner that can accommodate a fluid inside and a reinforcing layer that covers the outer surface of the liner and is made of fiber-reinforced plastic or the like. In this type of high-pressure tank, for example, as described in Patent Literature 1, the fluid may permeate the liner and enter between the outer surface of the liner and the reinforcing layer (hereinafter also referred to as the covering portion). be.

特開２００９－２４３６７５号公報JP 2009-243675 A

被覆部に流体が滞留すると、ライナと補強層との剥離や、ライナがその内部に向かって突出するバックリング等が生じ易くなる懸念がある。このため、ライナを透過して被覆部に進入した流体は、被覆部から導出することが好ましい。被覆部から導出される流体（以下、一時放出流体ともいう）は、一時的に限定された量で生じるため、高圧タンク装置の通常動作の一環として、高圧タンクの外部の所定の排出域に排出することが考えられる。この際、高圧タンク装置の大型化や高コスト化等を回避するべく、一時放出流体を所定の排出域に排出可能とする構成は、簡単且つ小型であることが求められる。 If the fluid stays in the coating, there is a concern that the liner and the reinforcing layer may easily separate from each other, or the liner may protrude toward the inside of the liner, causing buckling or the like. Therefore, it is preferable that the fluid that has penetrated the liner and entered the covering portion is discharged from the covering portion. Fluid exiting the cladding (hereinafter also referred to as temporary release fluid) occurs temporarily in limited quantities and is therefore discharged to a predetermined discharge area outside the high pressure tank as part of normal operation of the high pressure tank system. can be considered. In this case, in order to avoid an increase in the size and cost of the high-pressure tank device, it is required that the configuration that enables the temporarily released fluid to be discharged to a predetermined discharge area be simple and small.

本発明は上記した問題を解決するためになされたもので、簡単で小型な構成によって、一時放出流体を所定の排出域に排出することが可能な高圧タンク装置及び流体排出方法を提供する。 SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a high-pressure tank device and a fluid discharge method capable of discharging temporarily released fluid to a predetermined discharge area with a simple and compact structure.

本発明の一態様は、補強層で覆われた樹脂製のライナの内部に流体を収容可能な高圧タンクを備える高圧タンク装置であって、前記ライナの内部の前記流体を所定の排出域に導くことが可能な放出路と、前記放出路に介装され、前記高圧タンクの通常時には、前記排出域と前記ライナの内部とを遮断し、前記高圧タンクの非常時に、前記排出域と前記ライナの内部とを連通する圧力開放手段と、前記ライナと前記補強層との間である被覆部に介在する前記流体を、前記放出路の前記圧力開放手段よりも下流側に導出する導出路と、を備え、前記導出路は、前記圧力開放手段の下流側で前記放出路に接続されている。
One aspect of the present invention is a high-pressure tank device comprising a high-pressure tank capable of containing a fluid inside a resin liner covered with a reinforcing layer, wherein the fluid inside the liner is guided to a predetermined discharge area. a discharge passage interposed in the discharge passage to isolate the discharge area from the inside of the liner during normal operation of the high-pressure tank, and to separate the discharge area from the liner during an emergency of the high-pressure tank. a pressure release means for communicating with the inside; and a lead-out path for leading the fluid present in the covering portion between the liner and the reinforcing layer to a downstream side of the pressure release means of the release path. The lead-out passage is connected to the discharge passage downstream of the pressure relief means .

本発明の別の一態様は、補強層で覆われた樹脂製のライナの内部に流体を収容可能な高圧タンクを備える高圧タンク装置を用いた流体排出方法であって、前記高圧タンク装置は、圧力開放手段を備え、前記圧力開放手段は、前記ライナの内部の前記流体を所定の排出域に導くことが可能な放出路に介装され、前記高圧タンクの通常時には、前記排出域と前記ライナの内部とを遮断し、前記高圧タンクの非常時に、前記排出域と前記ライナの内部とを連通し、前記流体排出方法は、前記ライナと前記補強層との間である被覆部に連通する導出路に前記被覆部に介在する前記流体を導出する導出工程と、前記導出路に導出した前記流体を、前記放出路の前記圧力開放手段よりも下流側であって、前記放出路の一部である共通路を介して前記排出域に導く排出工程と、を有する。
Another aspect of the present invention is a fluid discharge method using a high-pressure tank device including a high-pressure tank capable of containing a fluid inside a resin liner covered with a reinforcing layer, the high-pressure tank device comprising: A pressure release means is provided, and the pressure release means is interposed in a discharge passage capable of leading the fluid inside the liner to a predetermined discharge area. and the inside of the liner in an emergency of the high-pressure tank, and the discharge area communicates with the inside of the liner. a lead-out step of leading the fluid intervening in the covering portion to a passage, and transferring the fluid led out to the lead-out passage to a part of the discharge passage downstream of the pressure release means of the discharge passage. and a discharge step leading to said discharge zone through a common path .

本発明では、高圧タンクの非常時にライナの内部の流体を排出域へと導く放出路のうち、圧力開放手段よりも下流側を利用して、被覆部に介在する流体を排出域に排出することができる。これによって、被覆部から導出路に導出された一時放出流体を簡単且つ小型な構成で排出域に排出可能とすることができる。 In the present invention, in the emergency of the high-pressure tank, of the discharge passage for guiding the fluid inside the liner to the discharge area, the downstream side of the pressure release means is used to discharge the fluid intervening in the covering portion to the discharge area. can be done. As a result, it is possible to discharge the temporarily released fluid drawn out from the covering portion to the lead-out path to the discharge area with a simple and compact configuration.

本発明の実施形態に係る高圧タンク装置と給排部との概略構成図である。1 is a schematic configuration diagram of a high-pressure tank device and a supply/discharge unit according to an embodiment of the present invention; FIG. 図１の高圧タンク装置の軸方向の一端側の要部拡大断面図である。FIG. 2 is an enlarged cross-sectional view of a principal portion of the high-pressure tank device of FIG. 1 at one end in the axial direction; 図１の高圧タンク装置の軸方向の他端側の要部拡大断面図である。FIG. 2 is an enlarged cross-sectional view of the main part of the other end side in the axial direction of the high-pressure tank device of FIG. 1 ; 通常時の圧力開放手段を説明する説明図である。FIG. 10 is an explanatory diagram for explaining pressure releasing means in a normal state; 非常時の圧力開放手段を説明する説明図である。It is an explanatory view explaining a pressure release means in an emergency.

本発明に係る高圧タンク装置及び流体排出方法について好適な実施形態を挙げ、添付の図面を参照しながら詳細に説明する。なお、以下の図において、同一又は同様の機能及び効果を奏する構成要素に対しては同一の参照符号を付し、繰り返しの説明を省略する場合がある。 A preferred embodiment of a high-pressure tank device and a fluid discharge method according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings below, constituent elements having the same or similar functions and effects are denoted by the same reference numerals, and repeated description may be omitted.

本発明に係る高圧タンク装置は、例えば、燃料電池電気自動車等の燃料電池車両である搭載体に搭載され、燃料電池システムに供給するための水素ガスを収容する高圧タンクを備えるものとして好適に用いることができる。そこで、本実施形態では、搭載体を燃料電池車両とし、高圧タンクが水素ガスを流体として収容する例について説明するが、特にこれに限定されるものではない。高圧タンク装置は、燃料電池車両以外の搭載体に搭載されてもよいし、水素ガス以外の流体を高圧タンクに収容することも可能である。 The high-pressure tank device according to the present invention is mounted on a mounting body, which is a fuel cell vehicle such as a fuel cell electric vehicle, and is preferably used as one having a high-pressure tank containing hydrogen gas to be supplied to the fuel cell system. be able to. Therefore, in the present embodiment, an example in which the mounting body is a fuel cell vehicle and the high-pressure tank contains hydrogen gas as a fluid will be described, but the present invention is not particularly limited to this. The high-pressure tank device may be mounted on a mounting body other than the fuel cell vehicle, and it is also possible to accommodate a fluid other than hydrogen gas in the high-pressure tank.

図１に示すように、本実施形態に係る高圧タンク装置１０は、給排部１２を介して水素ガスを給排する高圧タンク１４と、放出路１６と、圧力開放手段１８と、導出路２０とを備える。 As shown in FIG. 1, the high-pressure tank device 10 according to the present embodiment includes a high-pressure tank 14 for supplying and discharging hydrogen gas through a supply and discharge section 12, a discharge passage 16, a pressure release means 18, and a lead-out passage 20. and

給排部１２は、例えば、充填口２２から供給された水素ガスを、分岐路２４を介して高圧タンク１４に供給すること、及び高圧タンク１４から排気した水素ガスを、分岐路２４を介してレギュレータ２６に供給し、圧力調整した後に燃料電池システム２８に供給することが可能に構成されている。 The supply/discharge unit 12 supplies, for example, the hydrogen gas supplied from the filling port 22 to the high pressure tank 14 via the branch channel 24, and the hydrogen gas exhausted from the high pressure tank 14 via the branch channel 24. It is configured so that it can be supplied to the regulator 26 and supplied to the fuel cell system 28 after the pressure is adjusted.

給排部１２では、充填口２２と分岐路２４とが配管３０ａにより接続され、分岐路２４と高圧タンク１４とが配管３０ｂにより接続され、レギュレータ２６を介して分岐路２４と燃料電池システム２８とが配管３０ｃにより接続される。給排部１２の各構成要素と配管３０ａ、３０ｂ、３０ｃとの間には接続部３２がそれぞれ設けられ、これらの接続部３２は、高圧タンク装置１０等の通常時には、水素ガスの漏れが生じないように気密に形成されている。 In the supply/discharge section 12, the filling port 22 and the branch passage 24 are connected by a pipe 30a, the branch passage 24 and the high-pressure tank 14 are connected by a pipe 30b, and the branch passage 24 and the fuel cell system 28 are connected via a regulator 26. are connected by a pipe 30c. Connecting portions 32 are provided between each component of the supply/discharge portion 12 and the pipes 30a, 30b, and 30c, respectively. Hydrogen gas leaks from these connecting portions 32 during normal operation of the high-pressure tank device 10 and the like. It is airtightly formed so as not to

高圧タンク１４は、補強層４０と、ライナ４２と、保護部材４４と、ボス部４６とを有する。高圧タンク１４では、その軸方向（以下、高圧タンク１４の軸方向を単に軸方向ともいう）の一端側（図１の矢印Ｘ１側）と、他端側（図１の矢印Ｘ２側）とにそれぞれボス部４６が設けられている。以下では、軸方向の一端側に設けられたボス部４６を給排側ボス部４６ａともいい、軸方向の他端側に設けられたボス部４６をエンド側ボス部４６ｂともいう。また、給排側ボス部４６ａ及びエンド側ボス部４６ｂを特に区別しない場合には、これらを総称してボス部４６ともいう。 The high pressure tank 14 has a reinforcing layer 40 , a liner 42 , a protective member 44 and a boss portion 46 . In the high-pressure tank 14, in its axial direction (hereinafter, the axial direction of the high-pressure tank 14 is also simply referred to as the axial direction), one end side (arrow X1 side in FIG. 1) and the other end side (arrow X2 side in FIG. 1) A boss portion 46 is provided for each. Hereinafter, the boss portion 46 provided on one end side in the axial direction is also referred to as a supply/discharge side boss portion 46a, and the boss portion 46 provided on the other end side in the axial direction is also referred to as an end side boss portion 46b. Further, when the supply/discharge side boss portion 46a and the end side boss portion 46b are not particularly distinguished, they are collectively referred to as the boss portion 46 as well.

補強層４０は、炭素繊維強化プラスチック（ＣＦＲＰ）等からなり、ライナ４２の外面等を覆う。ライナ４２は、樹脂からなる中空体であり、その内部に水素ガスを収容することが可能である。具体的には、ライナ４２は、筒状の胴体部５２を有する。図２に示すように、ライナ４２は、胴体部５２（図１参照）の軸方向一端側（矢印Ｘ１方向側）に、ドーム状部５４と、ドーム状部５４の径方向内端に設けられた陥没部５６と、該陥没部５６から突出し且つ胴体部５２よりも小径の筒状部５８とを有する。筒状部５８の内側にライナ４２の開口部６０が設けられている。図３に示すように、胴体部５２（図１参照）の軸方向他端側（矢印Ｘ２方向側）においても同様に、ライナ４２は、ドーム状部５４と陥没部５６と筒状部５８とを有する。なお、本実施形態では、補強層４０及びライナ４２は、その軸方向の一端側と他端側とが、軸方向に直交する方向を軸として対称となるように構成されている。 The reinforcing layer 40 is made of carbon fiber reinforced plastic (CFRP) or the like, and covers the outer surface of the liner 42 and the like. The liner 42 is a hollow body made of resin, and can contain hydrogen gas therein. Specifically, the liner 42 has a tubular body portion 52 . As shown in FIG. 2, the liner 42 is provided at one axial end side (the arrow X1 direction side) of the body portion 52 (see FIG. 1), at the dome-shaped portion 54, and at the radially inner end of the dome-shaped portion 54. and a tubular portion 58 projecting from the recessed portion 56 and having a diameter smaller than that of the body portion 52 . An opening 60 in the liner 42 is provided inside the tubular portion 58 . As shown in FIG. 3, the liner 42 also includes a dome-shaped portion 54, a depressed portion 56, and a cylindrical portion 58 on the other axial end side (the arrow X2 direction side) of the body portion 52 (see FIG. 1). have In this embodiment, the reinforcing layer 40 and the liner 42 are configured so that one end side and the other end side in the axial direction are symmetrical with respect to the direction orthogonal to the axial direction.

陥没部５６は、ライナ４２の水素ガスを収容する内部に向かって陥没している。筒状部５８の基端側（図２の矢印Ｘ２側、図３の矢印Ｘ１側）には雄ねじ５８ａが設けられている。保護部材４４は、例えば、樹脂等からなり、主に、ライナ４２のドーム状部５４と胴体部５２との境界部分及びその周辺を補強層４０を介して覆う。このように保護部材４４を設けることで、高圧タンク１４の耐衝撃性等を向上させることができる。 The depressed portion 56 is depressed toward the interior of the liner 42 that accommodates the hydrogen gas. A male thread 58a is provided on the base end side of the cylindrical portion 58 (the arrow X2 side in FIG. 2 and the arrow X1 side in FIG. 3). The protective member 44 is made of, for example, resin, and mainly covers the boundary portion between the dome-shaped portion 54 of the liner 42 and the body portion 52 and its periphery via the reinforcing layer 40 . By providing the protective member 44 in this manner, the impact resistance of the high-pressure tank 14 can be improved.

図２及び図３に示すように、ボス部４６には、放出孔６２及び導出孔６４が形成される。また、放出孔６２には、圧力開放手段１８が介装されるとともに、該放出孔６２の下流側の端部は接続部６６を介して排出管６８と連通している。放出孔６２及び排出管６８の内側に、ライナ４２の内部の水素ガスを所定の排出域（不図示）に導くことが可能な放出路１６が形成される。排出域は、例えば、搭載体（不図示）の外部の風通しに優れた大気中等、水素ガスを排出するのに適した場所である。 As shown in FIGS. 2 and 3, the boss portion 46 is formed with a discharge hole 62 and an outlet hole 64 . The pressure release means 18 is interposed in the discharge hole 62 , and the downstream end of the discharge hole 62 communicates with a discharge pipe 68 via a connecting portion 66 . Formed inside the discharge hole 62 and the discharge pipe 68 is a discharge passage 16 capable of leading the hydrogen gas inside the liner 42 to a predetermined discharge area (not shown). The venting area is a suitable location for venting the hydrogen gas, for example into the well-ventilated atmosphere outside the payload (not shown).

導出孔６４は、互いに連通する第１孔部７０及び第２孔部７２を有し、これらの内側に導出路２０が形成される。導出路２０は、ライナ４２と補強層４０との間である被覆部７４に介在する水素ガスを、放出路１６の圧力開放手段１８よりも下流側（共通路１６ａ）に導出する。 The lead-out hole 64 has a first hole portion 70 and a second hole portion 72 communicating with each other, and the lead-out path 20 is formed inside them. The lead-out path 20 leads the hydrogen gas present in the covering portion 74 between the liner 42 and the reinforcing layer 40 to the downstream side (common path 16a) of the release path 16 from the pressure release means 18 .

具体的には、図２に示すように、給排側ボス部４６ａは、口金７６と、挿入部材７８とを有する。口金７６は、例えば、金属製であり、ライナ４２の筒状部５８に外装される。また、口金７６は、筒状の突出部８０と、該突出部８０の基端から径方向外側に広がる肩部８２とを有し、突出部８０の軸方向に沿って挿入孔８４が貫通形成されている。肩部８２は、突出部８０と反対側（図２の矢印Ｘ２側）の端面８２ａが、ライナ４２の陥没部５６の外面に臨む。また、肩部８２の外周面は、ライナ４２の胴体部５２及びドーム状部５４とともに補強層４０で覆われている。突出部８０は、補強層４０に設けられた開口４０ａから露出するように突出する。 Specifically, as shown in FIG. 2 , the supply/discharge side boss portion 46 a has a mouthpiece 76 and an insertion member 78 . The base 76 is made of metal, for example, and is attached to the cylindrical portion 58 of the liner 42 . The base 76 has a cylindrical projecting portion 80 and a shoulder portion 82 extending radially outward from the proximal end of the projecting portion 80, and an insertion hole 84 is formed through the projecting portion 80 along the axial direction. It is An end face 82a of the shoulder 82 on the side opposite to the projection 80 (the side of the arrow X2 in FIG. 2) faces the outer surface of the depression 56 of the liner 42. As shown in FIG. Further, the outer peripheral surface of the shoulder portion 82 is covered with the reinforcing layer 40 together with the body portion 52 and the dome-shaped portion 54 of the liner 42 . The projecting portion 80 projects so as to be exposed from the opening 40 a provided in the reinforcing layer 40 .

挿入孔８４は、部位によって径が相違し、突出部８０の先端面８０ａ側に位置する中内径孔８４ａと、肩部８２の端面８２ａ側に位置する大内径孔８４ｂと、これら中内径孔８４ａ及び大内径孔８４ｂの間に位置する小内径孔８４ｃとからなる。大内径孔８４ｂ内にライナ４２の筒状部５８が挿入され、該筒状部５８内に円筒状のカラー８６が圧入されている。これによって、大内径孔８４ｂの内周面とカラー８６の外周面との間で筒状部５８が支持される。 The diameter of the insertion hole 84 differs depending on its location, and includes a medium inner diameter hole 84a located on the tip surface 80a side of the protruding portion 80, a large inner diameter hole 84b positioned on the end surface 82a side of the shoulder portion 82, and these middle and inner diameter holes 84a. and a small inner diameter hole 84c positioned between the large inner diameter holes 84b. A tubular portion 58 of the liner 42 is inserted into the large inner diameter hole 84b, and a cylindrical collar 86 is press-fitted into the tubular portion 58. As shown in FIG. Thereby, the cylindrical portion 58 is supported between the inner peripheral surface of the large inner diameter hole 84b and the outer peripheral surface of the collar 86. As shown in FIG.

大内径孔８４ｂの内壁には、筒状部５８の雄ねじ５８ａよりも先端側に臨む部位に、周方向に沿う円環状のシール溝８８が形成され、且つ筒状部５８の雄ねじ５８ａに臨む部位に、該雄ねじ５８ａと螺合する雌ねじ９０が形成されている。シール溝８８の内部には、Ｏリングからなるシール部材９２が配設され、これによって、筒状部５８の外周面と大内径孔８４ｂの内周面との間がシールされる。また、雄ねじ５８ａと雌ねじ９０とが螺合することで、ライナ４２の筒状部５８と口金７６とが接合されている。 In the inner wall of the large inner diameter hole 84b, an annular seal groove 88 is formed along the circumferential direction at a portion facing the male screw 58a of the tubular portion 58 toward the tip side, and the portion facing the male screw 58a of the tubular portion 58. is formed with a female thread 90 that is screwed with the male thread 58a. A seal member 92 made of an O-ring is disposed inside the seal groove 88 to seal between the outer peripheral surface of the tubular portion 58 and the inner peripheral surface of the large inner diameter hole 84b. Further, the cylindrical portion 58 of the liner 42 and the mouthpiece 76 are joined by screwing the male thread 58a and the female thread 90 together.

口金７６には、導出孔６４の第１孔部７０がさらに貫通形成されている。第１孔部７０は、被覆部７４に介在する水素ガスを、被覆部７４の外部に導出するために設けられる。具体的には、第１孔部７０は、その一方の開口７０ａが口金７６の端面８２ａに設けられ、他方の開口７０ｂが中内径孔８４ａの内周面に設けられる。なお、第１孔部７０は、口金７６に対して、１つだけ設けられてもよいし、該口金７６の周方向に一定の間隔をおいて複数設けられてもよい。 A first hole portion 70 of the lead-out hole 64 is further formed through the mouthpiece 76 . The first hole portion 70 is provided to guide the hydrogen gas present in the covering portion 74 to the outside of the covering portion 74 . Specifically, one opening 70a of the first hole portion 70 is provided in the end surface 82a of the mouthpiece 76, and the other opening 70b is provided in the inner peripheral surface of the middle inner diameter hole 84a. Only one first hole 70 may be provided in the mouthpiece 76, or a plurality of first holes 70 may be provided in the circumferential direction of the mouthpiece 76 at regular intervals.

挿入部材７８は、中内径孔８４ａの径より外径が大きい頭部９４と、頭部９４から挿入孔８４の内部に向かって延在する挿入部９６とを有する。挿入部材７８では、挿入部９６が中内径孔８４ａと小内径孔８４ｃとカラー８６との内周面に沿って挿入孔８４に挿入される。 The insertion member 78 has a head portion 94 having an outer diameter larger than the diameter of the middle/inner diameter hole 84 a and an insertion portion 96 extending from the head portion 94 toward the inside of the insertion hole 84 . In the insertion member 78 , the insertion portion 96 is inserted into the insertion hole 84 along the inner peripheral surfaces of the middle inner diameter hole 84 a, the small inner diameter hole 84 c and the collar 86 .

この際、頭部９４は、挿入孔８４から露出し、挿入部９６に臨む側（図２の矢印Ｘ２側）の一端面９４ａが、突出部８０の先端面８０ａに当接する。頭部９４の一端面９４ａには、その外周縁部を周回するように円環状のシール溝９８が形成され、該シール溝９８の内部にＯリングからなるシール部材１００が配設される。これによって、頭部９４の一端面９４ａと、突出部８０の先端面８０ａとの間がシールされる。 At this time, the head 94 is exposed from the insertion hole 84 , and one end surface 94 a on the side facing the insertion portion 96 (the arrow X 2 side in FIG. 2 ) abuts the distal end surface 80 a of the projecting portion 80 . An annular seal groove 98 is formed in one end face 94a of the head 94 so as to surround the outer peripheral edge thereof, and a seal member 100 made of an O-ring is disposed inside the seal groove 98. As shown in FIG. Thereby, the space between the one end surface 94a of the head portion 94 and the tip end surface 80a of the projecting portion 80 is sealed.

挿入部９６は、小内径孔８４ｃに臨む部分の外周面に、周方向に沿う円環状のシール溝１０２が形成され、該シール溝１０２の内部には、Ｏリングからなるシール部材１０４が配設されている。これによって、挿入部９６の外周面と挿入孔８４の内周面との間がシールされる。 The insertion portion 96 has an annular seal groove 102 along the circumferential direction formed on the outer peripheral surface of the portion facing the small inner diameter hole 84c, and a seal member 104 made of an O-ring is disposed inside the seal groove 102. It is Thereby, the outer peripheral surface of the insertion portion 96 and the inner peripheral surface of the insertion hole 84 are sealed.

挿入部材７８の内部には、放出孔６２と、導出孔６４の第２孔部７２と、給排孔１０６とがそれぞれ形成されている。放出孔６２は、挿入部９６のライナ４２の内部に臨む側の先端面９６ａと、頭部９４の外周面９４ｂとを連通するように挿入部材７８に貫通形成され、頭部９４の外周面９４ｂに設けられた接続部６６を介して排出管６８と連通している。 Inside the insertion member 78, the discharge hole 62, the second hole portion 72 of the outlet hole 64, and the supply/discharge hole 106 are formed. The discharge hole 62 is formed through the insertion member 78 so as to communicate between the distal end surface 96a of the insertion portion 96 facing the inside of the liner 42 and the outer peripheral surface 94b of the head portion 94. It communicates with a discharge pipe 68 via a connecting portion 66 provided in the .

放出孔６２に介装される圧力開放手段１８は、高圧タンク１４の通常時には、排出域とライナ４２の内部とが遮断されるように、放出孔６２の一部を閉塞し、高圧タンク１４の非常時には、放出孔６２を開放して、排出域とライナ４２の内部とを連通することが可能に構成されている。本実施形態では、圧力開放手段１８が、所定の作動温度まで加熱されると、高圧タンク１４の非常時であるとして、排出域とライナ４２の内部とを連通する熱作動式である例について説明するが、特にこれに限定されるものではない。圧力開放手段１８は、例えば、高圧タンク１４の内圧が所定値を超えて上昇した場合に、高圧タンク１４の非常時であるとして、排出域とライナ４２の内部とを連通するように構成されてもよい。 The pressure release means 18 interposed in the discharge hole 62 closes a part of the discharge hole 62 so that the discharge area and the inside of the liner 42 are cut off when the high pressure tank 14 is normal. In an emergency, the discharge hole 62 is opened to allow communication between the discharge area and the inside of the liner 42 . In the present embodiment, the pressure release means 18 is of a thermally actuated type that communicates the discharge area with the inside of the liner 42 when the high pressure tank 14 is in an emergency when it is heated to a predetermined operating temperature. However, it is not particularly limited to this. For example, when the internal pressure of the high-pressure tank 14 exceeds a predetermined value, the pressure release means 18 is configured to establish communication between the discharge area and the inside of the liner 42, assuming that the high-pressure tank 14 is in an emergency. good too.

図４に示すように、圧力開放手段１８は、高圧タンク１４の通常時、すなわち、放出孔６２を開放する前（作動前）では、本体部１０８と、ピストン１１０と、可溶栓１１２と、付勢部材１１４とを有する。これらのうち、可溶栓１１２は、例えば、ガラスバルブや、ヒューズメタルからなり、所定の温度以上になると溶融する。圧力開放手段１８では、ライナ４２への水素ガス充填時等の高圧タンク１４の通常時における昇温では可溶栓１１２が溶融せず、一方、火災等の高圧タンク１４の非常時における昇温が生じた場合には可溶栓１１２が速やかに溶融するように作動温度が予め設定されている。このため、図５に示すように、高圧タンク１４の非常時に放出孔６２を開放した後（作動後）の圧力開放手段１８では、可溶栓１１２が溶融している。 As shown in FIG. 4, when the high-pressure tank 14 is normal, that is, before the discharge hole 62 is opened (before operation), the pressure release means 18 includes the main body 108, the piston 110, the fusible plug 112, and a biasing member 114 . Among these, the fusible plug 112 is made of, for example, a glass bulb or a fuse metal, and melts at a predetermined temperature or higher. In the pressure release means 18, the fusible plug 112 does not melt when the temperature of the high-pressure tank 14 is normally increased, such as when the liner 42 is filled with hydrogen gas. The operating temperature is preset so that the fusible plug 112 melts quickly if it occurs. Therefore, as shown in FIG. 5, the fusible plug 112 is melted in the pressure releasing means 18 after the release hole 62 has been opened (actuated) in an emergency of the high-pressure tank 14 .

本体部１０８は、有底筒状であり、頭部９４に設けられた連通孔１１６の内部に、その開口側から挿入されている。連通孔１１６は、その延在方向の一端側（図４及び図５の矢印Ｘ１側）が、頭部９４の他端面９４ｃに開口する。また、連通孔１１６の他端側（図４及び図５の矢印Ｘ２側）は、放出孔６２と連通している。さらに、連通孔１１６は、部位によって径が相違し、一端側から他端側に向かって、大内径部１１６ａ、中内径部１１６ｂ、小内径部１１６ｃがこの順に設けられている。 The body portion 108 has a cylindrical shape with a bottom, and is inserted into the communication hole 116 provided in the head portion 94 from the opening side thereof. The communication hole 116 opens to the other end surface 94c of the head 94 at one end side (arrow X1 side in FIGS. 4 and 5) in its extending direction. Also, the other end side of the communication hole 116 (the arrow X2 side in FIGS. 4 and 5) communicates with the discharge hole 62 . Further, the communication hole 116 has a different diameter depending on the part, and is provided with a large inner diameter portion 116a, a medium inner diameter portion 116b, and a small inner diameter portion 116c in this order from one end side to the other end side.

本体部１０８は大内径部１１６ａに挿入され、該本体部１０８の開口側の端面１０８ａが、大内径部１１６ａと中内径部１１６ｂとの間に形成される段差面１１８に当接している。本体部１０８の内径と、中内径部１１６ｂの内径とは略等しくなっている。小内径部１１６ｃの内径は、放出孔６２の内径よりも大きくなっている。 The main body portion 108 is inserted into the large inner diameter portion 116a, and the end surface 108a on the opening side of the main body portion 108 is in contact with the step surface 118 formed between the large inner diameter portion 116a and the middle inner diameter portion 116b. The inner diameter of the main body portion 108 and the inner diameter of the middle inner diameter portion 116b are substantially equal. The inner diameter of the small inner diameter portion 116 c is larger than the inner diameter of the discharge hole 62 .

本体部１０８の内部及び連通孔１１６の内部には、ピストン１１０が進退可能に設けられる。ピストン１１０は、小内径部１１６ｃの内径と等しいか僅かに小さい外径のボディ部１２０と、ボディ部１２０の基端側（図４及び図５の矢印Ｘ１側）に設けられるフランジ部１２２と、ボディ部１２０の先端側（図４及び図５の矢印Ｘ２側）に設けられる先端部１２４とを有する。フランジ部１２２の外径は、本体部１０８の内径と等しいか僅かに小さくなっている。先端部１２４の外径は、放出孔６２の内径と等しいか僅かに小さくなっている。 A piston 110 is movably provided inside the body portion 108 and inside the communication hole 116 . The piston 110 includes a body portion 120 having an outer diameter equal to or slightly smaller than the inner diameter of the small inner diameter portion 116c, a flange portion 122 provided on the base end side of the body portion 120 (arrow X1 side in FIGS. 4 and 5), and a distal end portion 124 provided on the distal end side of the body portion 120 (the arrow X2 side in FIGS. 4 and 5). The outer diameter of the flange portion 122 is equal to or slightly smaller than the inner diameter of the body portion 108 . The outer diameter of tip 124 is equal to or slightly smaller than the inner diameter of discharge hole 62 .

フランジ部１２２の径方向の略中央には凹部１２２ａが設けられ、該凹部１２２ａには可溶栓１１２の一部を挿入することが可能となっている。また、フランジ部１２２のボディ部１２０に臨む側（図４及び図５の矢印Ｘ２側）の端面１２２ｂと、連通孔１１６の中内径部１１６ｂと小内径部１１６ｃとの間に形成される段差面１２６との間に、付勢部材１１４が配設されている。付勢部材１１４は、スプリング等からなり、ピストン１１０を基端側（図４及び図５の矢印Ｘ１側）に向かって弾発付勢する。 A concave portion 122a is provided substantially in the radial center of the flange portion 122, and a portion of the fusible plug 112 can be inserted into the concave portion 122a. In addition, a stepped surface formed between an end surface 122b of the flange portion 122 facing the body portion 120 (arrow X2 side in FIGS. 4 and 5) and an intermediate inner diameter portion 116b and a small inner diameter portion 116c of the communication hole 116. 126, a biasing member 114 is arranged. The biasing member 114 is composed of a spring or the like, and elastically biases the piston 110 toward the base end side (arrow X1 side in FIGS. 4 and 5).

図４に示すように、作動前の圧力開放手段１８では、本体部１０８の内側の底壁面１０８ｂとピストン１１０の凹部１２２ａとの間に可溶栓１１２が配設されることで、ピストン１１０が付勢部材１１４による弾発力に抗して進出した状態で維持されている。この際、ピストン１１０の先端部１２４は、放出孔６２の内部に挿入され、これによって、放出孔６２が閉塞されている。この際、ピストン１１０の先端部１２４を周回するようにＯリングからなるシール部材１２８が配設されることで、放出孔６２に挿入された先端部１２４の外周面と放出孔６２の内周面との間がシールされる。 As shown in FIG. 4, in the pressure release means 18 before operation, a fusible plug 112 is disposed between the inner bottom wall surface 108b of the body portion 108 and the recessed portion 122a of the piston 110, so that the piston 110 is It is maintained in an advanced state against the elastic force of the biasing member 114 . At this time, the tip portion 124 of the piston 110 is inserted into the discharge hole 62 , thereby closing the discharge hole 62 . At this time, a seal member 128 made of an O-ring is disposed so as to surround the tip portion 124 of the piston 110, so that the outer peripheral surface of the tip portion 124 inserted into the discharge hole 62 and the inner peripheral surface of the discharge hole 62 are sealed. is sealed between

一方、図５に示すように、作動後の圧力開放手段１８では、可溶栓１１２が溶解することで、付勢部材１１４の弾発付勢下にピストン１１０が後退する。これによって、ピストン１１０の先端部１２４が、放出孔６２の外部に配置されることになる。その結果、放出孔６２の圧力開放手段１８よりも上流側（図２のライナ４２の内部側）と下流側（排出域側）とが連通する。 On the other hand, as shown in FIG. 5 , in the pressure releasing means 18 after actuation, the fusible plug 112 melts and the piston 110 retreats under the elastic bias of the biasing member 114 . This places the tip 124 of the piston 110 outside the discharge hole 62 . As a result, the upstream side (inner side of the liner 42 in FIG. 2) and the downstream side (discharge area side) of the discharge hole 62 of the pressure release means 18 are communicated with each other.

なお、圧力開放手段１８は、上記の構成に限定されるものではなく、高圧タンク１４の非常時に、高圧タンク１４の内圧を低減させるべく一般的に用いられる、いわゆる、ＰＲＤ（Pressure Relief Device）、安全弁等を適用することができる。 In addition, the pressure release means 18 is not limited to the above configuration, and is generally used to reduce the internal pressure of the high pressure tank 14 in an emergency, so-called PRD (Pressure Relief Device). A safety valve or the like can be applied.

図２に示すように、挿入部材７８の第２孔部７２では、その一方の開口７２ａが、口金７６に設けられた第１孔部７０の開口７０ｂと対向するように、挿入部９６の外周面に設けられる。また、他方の開口７２ｂが、圧力開放手段１８よりも下流側の放出孔６２の内面に設けられる。これによって、第１孔部７０及び第２孔部７２を介して、被覆部７４と放出孔６２の圧力開放手段１８よりも下流側とが連通する。 As shown in FIG. 2, in the second hole portion 72 of the insertion member 78, the outer periphery of the insertion portion 96 is arranged so that one opening 72a thereof faces the opening 70b of the first hole portion 70 provided in the base 76. As shown in FIG. provided on the surface. The other opening 72b is provided on the inner surface of the discharge hole 62 on the downstream side of the pressure release means 18. As shown in FIG. As a result, the covering portion 74 and the discharge hole 62 downstream of the pressure releasing means 18 communicate with each other through the first hole portion 70 and the second hole portion 72 .

つまり、被覆部７４に進入した水素ガスは、第１孔部７０及び第２孔部７２からなる導出孔６４を介して、放出孔６２の圧力開放手段１８よりも下流側に導出され、さらに、放出孔６２から接続部６６を介して排出管６８に導出されることで、排出域へと排出される。なお、挿入部材７８に設けられる第２孔部７２の個数や配置は、第１孔部７０の個数や配置に対応するように設定される。 That is, the hydrogen gas that has entered the covering portion 74 is led out downstream of the pressure release means 18 of the release hole 62 through the lead-out hole 64 composed of the first hole portion 70 and the second hole portion 72, and furthermore, It is discharged from the discharge hole 62 to the discharge pipe 68 via the connection part 66 and discharged to the discharge area. The number and arrangement of the second holes 72 provided in the insertion member 78 are set so as to correspond to the number and arrangement of the first holes 70 .

本実施形態では、放出孔６２の圧力開放手段１８よりも下流側全体の内径に比して、導出孔６４全体の内径を小さくすることで、導出路２０を流通する水素ガスの圧力損失が、放出路１６を流通する水素ガスの圧力損失よりも大きくなるように設定されている。 In this embodiment, the inner diameter of the outlet hole 64 as a whole is smaller than the inner diameter of the outlet hole 62 on the downstream side of the pressure release means 18, so that the pressure loss of the hydrogen gas flowing through the outlet passage 20 is reduced to It is set to be larger than the pressure loss of the hydrogen gas flowing through the discharge passage 16 .

図２に示すように、給排孔１０６は、挿入部９６の先端面９６ａと、頭部９４の外周面９４ｂとを連通するように挿入部材７８に貫通形成され、頭部９４の外周面９４ｂに設けられた接続部１３０を介して給排部１２の配管３０ｂが接続されている。これによって、給排孔１０６は、給排部１２とライナ４２の内部とを連通することが可能になっている。また、挿入部材７８の内部には、不図示の主止弁（電磁弁）が内蔵され、該主止弁を開閉することによって、給排部１２とライナ４２の内部とを連通した状態と遮断した状態とを切り換えられる。 As shown in FIG. 2 , the supply/discharge hole 106 is formed through the insertion member 78 so as to communicate between the distal end surface 96 a of the insertion portion 96 and the outer peripheral surface 94 b of the head 94 . A pipe 30b of the supply/discharge section 12 is connected via a connection section 130 provided in the . This allows the supply/discharge hole 106 to communicate between the supply/discharge portion 12 and the inside of the liner 42 . A main stop valve (solenoid valve) (not shown) is built in the insertion member 78 , and by opening and closing the main stop valve, the communication between the supply/discharge portion 12 and the inside of the liner 42 is disconnected. You can switch between the

接続部１３０は、高圧タンク装置１０の通常時には、水素ガスの漏れが生じないように気密に形成されている。接続部１３０の内部に配管３０ｂが挿通されている。また、接続部１３０は、その一部が給排孔１０６に挿入されることで、挿入部材７８の頭部９４に固定されている。頭部９４と接続部１３０との間には、シール部材１３６と、隔離部材１３８とが挟持されている。 The connecting portion 130 is airtightly formed so that the hydrogen gas does not leak when the high-pressure tank device 10 is normally operated. A pipe 30 b is inserted through the inside of the connecting portion 130 . Further, the connection portion 130 is fixed to the head portion 94 of the insertion member 78 by partially inserting it into the supply/discharge hole 106 . A sealing member 136 and a separating member 138 are sandwiched between the head 94 and the connecting portion 130 .

隔離部材１３８は、一端に底部１３８ａを有する有底筒状である。また、隔離部材１３８の開口側には漏洩流体収容部１４０が一体に接続されている。 Separating member 138 has a bottomed tubular shape having a bottom portion 138a at one end. A leaked fluid containing portion 140 is integrally connected to the opening side of the isolation member 138 .

図１及び図２に示すように、漏洩流体収容部１４０は、例えば、給排部１２の接続部３２や、上記の接続部１３０を少なくとも囲う壁部によって構成される。これによって、漏洩流体収容部１４０は、通常時には水素ガスの漏洩が生じないように設定された箇所から、不具合により漏洩した漏洩流体を収容可能となっている。 As shown in FIGS. 1 and 2 , the leaked fluid containing portion 140 is configured by, for example, the connection portion 32 of the supply/discharge portion 12 and a wall portion surrounding at least the connection portion 130 . As a result, the leaked fluid containing portion 140 can contain the leaked fluid that has leaked due to a malfunction from a location that is normally set so that hydrogen gas does not leak.

漏洩流体収容部１４０には、漏洩流体収容部１４０内の水素ガスを検知する漏洩検知センサ１４２（図１参照）が設けられる。漏洩検知センサ１４２としては、水素ガスの漏洩の有無又は水素ガスの漏洩量（濃度）を検知することが可能な種々の水素センサを用いることができる。 The leakage detection sensor 142 (see FIG. 1) that detects hydrogen gas in the leakage fluid storage section 140 is provided in the leakage fluid storage section 140 . As the leakage detection sensor 142, various hydrogen sensors capable of detecting the presence or absence of leakage of hydrogen gas or the amount (concentration) of leakage of hydrogen gas can be used.

図３に示すように、エンド側ボス部４６ｂは、挿入部材７８に代えて、挿入部材１４４を備えることを除いて、給排側ボス部４６ａ（図２参照）と同様に構成されている。挿入部材１４４は、給排孔１０６が形成されず、上記の主止弁が設けられていないこと、接続部１３０を介した給排部１２との接続がなされていないこと、及び挿入部９６の軸方向の長さが若干短いことを除いて、挿入部材７８と同様に構成されている。つまり、エンド側ボス部４６ｂは、口金７６と、挿入部材１４４とを有し、軸方向に直交する方向を軸として給排側ボス部４６ａと対称となるように高圧タンク１４に配設されている。 As shown in FIG. 3, the end-side boss portion 46b is configured in the same manner as the supply/discharge-side boss portion 46a (see FIG. 2) except that an insert member 144 is provided instead of the insert member 78. As shown in FIG. The insertion member 144 is not formed with the supply/discharge hole 106, is not provided with the main stop valve, is not connected to the supply/discharge portion 12 via the connection portion 130, and is not connected to the insertion portion 96. It is constructed similarly to insert member 78, except that it is slightly shorter in axial length. That is, the end-side boss portion 46b has a mouthpiece 76 and an insertion member 144, and is disposed on the high-pressure tank 14 so as to be symmetrical with the supply/discharge-side boss portion 46a about a direction orthogonal to the axial direction. there is

このため、エンド側ボス部４６ｂの口金７６にも、導出孔６４の第１孔部７０が形成されている。また、挿入部材１４４の内部にも、放出孔６２と、導出孔６４の第２孔部７２とが形成されている。この放出孔６２には、圧力開放手段１８が介装され、その下流側に導出孔６４が連通し、さらに下流側の端部に接続部６６を介して排出管６８が連通している。 Therefore, the first hole portion 70 of the lead-out hole 64 is also formed in the mouthpiece 76 of the end-side boss portion 46b. Further, the discharge hole 62 and the second hole portion 72 of the lead-out hole 64 are also formed inside the insertion member 144 . The pressure release means 18 is interposed in the discharge hole 62 , the outlet hole 64 communicates with the downstream side thereof, and the discharge pipe 68 communicates with the downstream end through the connection portion 66 .

本実施形態に係る高圧タンク装置１０は、基本的には以上のように構成される。この高圧タンク装置１０の通常時の動作では、例えば、図１に示すように、充填口２２を介して水素補給源（不図示）から給排部１２に供給された水素ガスが、配管３０ａ、分岐路２４、配管３０ｂ、給排孔１０６（図２参照）及び開状態の主止弁を介してライナ４２の内部に給気される。この給気により、ライナ４２に水素ガスが十分に充填された場合、水素補給源からの水素ガスの供給を停止する。 The high-pressure tank device 10 according to this embodiment is basically configured as described above. In normal operation of the high-pressure tank device 10, for example, as shown in FIG. Air is supplied to the inside of the liner 42 via the branch passage 24, the pipe 30b, the supply/discharge hole 106 (see FIG. 2), and the open main stop valve. When the liner 42 is sufficiently filled with hydrogen gas by this air supply, the supply of hydrogen gas from the hydrogen supply source is stopped.

ライナ４２内の水素ガスを燃料電池システム２８へと供給する場合には、ライナ４２内から給排孔１０６及び開状態の主止弁を介して配管３０ｂに排気された水素ガスをレギュレータ２６に送る。この水素ガスは、レギュレータ２６で圧力が調整された後、配管３０ｃを介して燃料電池システム２８へと供給される。 When the hydrogen gas in the liner 42 is supplied to the fuel cell system 28, the hydrogen gas discharged from the liner 42 to the pipe 30b through the supply/discharge hole 106 and the open main stop valve is sent to the regulator 26. . After the pressure of this hydrogen gas is adjusted by the regulator 26, it is supplied to the fuel cell system 28 through the pipe 30c.

上記のようにして水素ガスを排気することでライナ４２の内圧が低下すると、該ライナ４２が補強層４０に向かって押圧される押圧力も小さくなるため、ライナ４２を透過した水素ガスが被覆部７４に進入し易くなる。 When the internal pressure of the liner 42 is reduced by discharging the hydrogen gas as described above, the pressing force with which the liner 42 is pressed toward the reinforcing layer 40 is also reduced. It becomes easier to enter 74.

このため、図２、図３及び図４に示すように、被覆部７４に介在する水素ガスは導出路２０に導出される（導出工程）。具体的に、水素ガスは、被覆部７４から、ボス部４６に形成された第１孔部７０へと流動し、さらに、挿入部材７８に形成された第２孔部７２へと流動する。そして、導出路２０に導出した水素ガス（以下、一時放出流体ともいう）は、放出路１６の圧力開放手段１８よりも下流側（共通路１６ａ）を介して排出域へと導かれる（排出工程）。具体的に、導出路２０（第２孔部７２）は、圧力開放手段１８よりも下流側で放出路１６に接続されているため、導出路２０を経由した一時放出流体は、放出路１６の一部である共通路１６ａを介して排出域へと排出される。 Therefore, as shown in FIGS. 2, 3 and 4, the hydrogen gas present in the covering portion 74 is led out to the lead-out path 20 (lead-out step). Specifically, the hydrogen gas flows from the coating portion 74 to the first hole portion 70 formed in the boss portion 46 and then to the second hole portion 72 formed in the insert member 78 . Then, the hydrogen gas (hereinafter also referred to as temporary release fluid) led out to the lead-out path 20 is led to the discharge area through the downstream side (common path 16a) of the pressure release means 18 of the release path 16 (discharge process ). Specifically, since the lead-out path 20 (second hole portion 72) is connected to the release path 16 downstream of the pressure release means 18, the temporarily released fluid passing through the lead-out path 20 is It is discharged to the discharge area via the common passage 16a, which is a part thereof.

一時放出流体は、一時的に限定された量で生じるため、高圧タンク装置１０の通常動作の一環として排出域に排出される。つまり、導出工程及び排出工程の際には、圧力開放手段１８は、図４に示すように作動前の状態にあり、排出域とライナ４２の内部とが遮断されるように放出孔６２の一部を閉塞している。このため、導出路２０から放出路１６の圧力開放手段１８よりも下流側に一時放出流体を良好に導出して、排出域に排出することができる。 Temporary release fluid occurs in limited quantities temporarily and is discharged to the discharge zone as part of normal operation of the high pressure tank system 10 . That is, during the discharge and discharge steps, the pressure relief means 18 is in its pre-actuated state as shown in FIG. part is blocked. Therefore, the temporary release fluid can be well led out from the lead-out passage 20 to the downstream side of the pressure release means 18 of the discharge passage 16 and discharged to the discharge area.

以上から、本実施形態に係る高圧タンク装置１０及び流体排出方法によれば、高圧タンク１４の非常時にライナ４２の内部の水素ガスを排出域へと導く放出路１６のうち、圧力開放手段１８よりも下流側を利用して、被覆部７４に介在する水素ガスを排出域に排出することができる。これによって、被覆部７４から導出路２０に導出された一時放出流体を簡単且つ小型な構成で排出域に排出可能とすることができる。 As described above, according to the high-pressure tank device 10 and the fluid discharge method according to the present embodiment, the pressure release means 18 in the discharge passage 16 that guides the hydrogen gas inside the liner 42 to the discharge area in an emergency of the high-pressure tank 14 Also, the downstream side can be used to discharge the hydrogen gas intervening in the covering portion 74 to the discharge area. As a result, it is possible to discharge the temporarily released fluid drawn out from the covering portion 74 to the lead-out path 20 to the discharge area with a simple and compact configuration.

また、一時放出流体を排出域に排出可能とすることで、被覆部７４に水素ガスが滞留することを抑制できるため、ライナ４２と補強層４０との剥離や、ライナ４２がその内部に向かって突出するバックリング等が生じることを回避できる。その結果、高圧タンク装置１０が大型化することや高コスト化すること等を抑制しつつ、高圧タンク１４の耐久性を向上させることができる。 In addition, by enabling the temporarily released fluid to be discharged to the discharge area, hydrogen gas can be suppressed from remaining in the covering portion 74, so that the separation of the liner 42 and the reinforcing layer 40 and the movement of the liner 42 toward the inside thereof can be suppressed. The occurrence of protruding buckling or the like can be avoided. As a result, it is possible to improve the durability of the high-pressure tank 14 while preventing the high-pressure tank device 10 from increasing in size and cost.

しかも、放出路１６の一部を利用することにより、一時放出流体が排出域以外の領域に排出されることを回避できる。このため、例えば、燃料電池車両である搭載体のフロア（不図示）の下方に高圧タンク装置１０を配設した場合であっても、該フロアを介してキャビン（不図示）に水素ガスが進入する懸念がない。従って、搭載体に対して、フロアのシール性を高めるための構成を設ける必要がない分、高圧タンク装置１０を低コストで容易に搭載することも可能になる。 Moreover, by using a part of the discharge path 16, it is possible to prevent the temporary discharge fluid from being discharged to areas other than the discharge area. Therefore, for example, even if the high-pressure tank device 10 is arranged below the floor (not shown) of the mounting body, which is a fuel cell vehicle, hydrogen gas enters the cabin (not shown) through the floor. there is no concern to Therefore, it is possible to easily mount the high-pressure tank device 10 at a low cost, because there is no need to provide a structure for enhancing the sealing performance of the floor on the mounting body.

高圧タンク装置１０では、例えば、給排部１２の接続部３２（図１参照）や、給排部１２と高圧タンク１４との接続部１３０（図２参照）に緩みが生じた場合等のように、高圧タンク装置１０の不具合による漏洩流体が発生することが考えられる。この漏洩流体は、一時放出流体とは別に、漏洩流体収容部１４０に収容されるため、一時放出流体を含まない漏洩流体を漏洩検知センサ１４２により検知することができる。その結果、一時放出流体を漏洩流体であるとして誤検知することを回避できるため、高圧タンク装置１０の不具合を高精度に検知することが可能になる。 In the high-pressure tank device 10, for example, when the connection portion 32 (see FIG. 1) of the supply/discharge portion 12 or the connection portion 130 (see FIG. 2) between the supply/discharge portion 12 and the high-pressure tank 14 becomes loose. In addition, it is conceivable that leakage fluid occurs due to malfunction of the high-pressure tank device 10 . Since this leaked fluid is stored in the leaked fluid storage unit 140 separately from the temporarily released fluid, the leaked fluid that does not contain the temporarily released fluid can be detected by the leak detection sensor 142 . As a result, erroneous detection of the temporarily released fluid as leaking fluid can be avoided, and malfunctions of the high-pressure tank device 10 can be detected with high accuracy.

ところで、例えば、車両火災により高圧タンク装置１０が高温環境下に置かれた場合等のような、高圧タンク１４の非常時には、圧力開放手段１８が昇温して作動温度に達する。これによって、放出孔６２の圧力開放手段１８よりも上流側と下流側とが連通することで、ライナ４２の内部の水素ガスが放出路１６を介して排出域へと排出される。この際、上記の通り、導出路２０を流通する水素ガスの圧力損失が、放出路１６を流通する水素ガスの圧力損失よりも大きくなるように設定されている。このため、ライナ４２の内部の水素ガスを、導出路２０よりも放出路１６に優先して流通させることができる。 By the way, in an emergency of the high-pressure tank 14, such as when the high-pressure tank device 10 is placed in a high-temperature environment due to a vehicle fire, for example, the temperature of the pressure releasing means 18 rises and reaches the operating temperature. As a result, the upstream side and the downstream side of the pressure release means 18 of the discharge hole 62 are communicated with each other, and the hydrogen gas inside the liner 42 is discharged to the discharge area through the discharge passage 16 . At this time, as described above, the pressure loss of the hydrogen gas flowing through the lead-out passage 20 is set to be greater than the pressure loss of the hydrogen gas flowing through the discharge passage 16 . Therefore, the hydrogen gas inside the liner 42 can be preferentially distributed to the release passage 16 rather than the lead-out passage 20 .

この場合、ライナ４２の内部の水素ガスが被覆部７４に向かって流入することを回避できるため、ライナ４２の内部の水素ガスを効率的に排出域に排出することが可能になる。なお、たとえ、ライナ４２の内部の水素ガスが被覆部７４に向かって流入しても、被覆部７４内の水素ガスの圧力がライナ４２の内圧を超えることはないため、高圧タンク１４の破損等に繋がる懸念はない。 In this case, the hydrogen gas inside the liner 42 can be prevented from flowing toward the covering portion 74, so that the hydrogen gas inside the liner 42 can be efficiently discharged to the discharge area. Even if the hydrogen gas inside the liner 42 flows toward the covering portion 74 , the pressure of the hydrogen gas inside the covering portion 74 does not exceed the internal pressure of the liner 42 . There are no concerns related to

従って、この高圧タンク装置１０では、圧力開放手段１８を備えることにより、非常時における高温環境下で高圧タンク１４の内圧が上昇しても、該内圧が所定の大きさに達する前に圧力開放手段１８を作動させて、該内圧を速やかに降下させることができる。 Therefore, in the high-pressure tank device 10, even if the internal pressure of the high-pressure tank 14 rises in a high-temperature environment in an emergency, the pressure-releasing means 18 can be released before the internal pressure reaches a predetermined level. 18 can be operated to quickly drop the internal pressure.

上記の実施形態に係る高圧タンク装置１０では、高圧タンク１４は、ライナ４２の開口部６０に設けられるボス部４６を有し、ボス部４６には、放出路１６の一部を形成する放出孔６２と、導出路２０を形成する導出孔６４と、がそれぞれ設けられ、圧力開放手段１８は、放出孔６２に設けられ、導出孔６４は、被覆部７４と、放出孔６２の圧力開放手段１８よりも下流側とを連通することとした。 In the high-pressure tank device 10 according to the embodiment described above, the high-pressure tank 14 has a boss portion 46 provided in the opening 60 of the liner 42 , and the boss portion 46 has a discharge hole forming a part of the discharge passage 16 . 62 and an outlet hole 64 forming the outlet passage 20 are provided respectively, the pressure release means 18 being provided in the discharge hole 62, the outlet hole 64 being connected to the cover portion 74 and the pressure release means 18 of the discharge hole 62. It was decided to communicate with the downstream side.

この場合、ボス部４６の内部に設けられた導出孔６４によって導出路２０が形成されるため、例えば、ボス部４６の外部に不図示の配管等を設けて導出路２０を構成するような場合に比して、一時放出流体を排出域に排出可能とするための構成を一層小型化することが可能になる。なお、導出路２０は、例えば、開口７０ｂが中内径孔８４ａの内周面に代えて突出部８０の外周面に設けられた第１孔部（不図示）のみからなる導出孔６４と、該導出孔６４と排出管６８とを連通するべくボス部４６の外部に設けられた導出管（不図示）とによって形成されてもよい。 In this case, since the lead-out path 20 is formed by the lead-out hole 64 provided inside the boss portion 46, for example, when a pipe (not shown) is provided outside the boss portion 46 to configure the lead-out path 20. In comparison, it is possible to further miniaturize the configuration for allowing the temporary release fluid to be discharged to the discharge area. The lead-out path 20 includes, for example, a lead-out hole 64 having only a first hole (not shown) provided on the outer peripheral surface of the protruding portion 80 instead of the inner peripheral surface of the middle inner diameter hole 84a. It may be formed by a lead-out pipe (not shown) provided outside the boss portion 46 so as to communicate the lead-out hole 64 and the discharge pipe 68 .

上記の実施形態に係る高圧タンク装置１０では、ボス部４６は、ライナ４２の内部と外部を連通する挿入孔８４が貫通形成された口金７６と、挿入孔８４に挿入される挿入部材７８、１４４と、を有し、放出孔６２は、挿入部材７８、１４４に設けられ、導出孔６４は、口金７６に設けられて被覆部７４に連通する第１孔部７０と、挿入部材７８、１４４に設けられて放出孔６２の圧力開放手段１８よりも下流側に連通する第２孔部７２と、を有することとした。この場合、放出孔６２及び導出孔６４を簡素化できるため、一時放出流体をより簡単且つより小型な構成で排出域に排出することが可能になる。 In the high-pressure tank device 10 according to the above-described embodiment, the boss portion 46 includes a mouthpiece 76 through which an insertion hole 84 communicating between the inside and the outside of the liner 42 is formed, and insertion members 78 and 144 that are inserted into the insertion hole 84. The discharge hole 62 is provided in the insertion members 78 and 144, and the lead-out hole 64 is provided in the base 76 and communicates with the covering portion 74. and a second hole portion 72 that is provided and communicates downstream of the pressure releasing means 18 of the discharge hole 62 . In this case, the discharge hole 62 and the outlet hole 64 can be simplified, so that the temporary discharge fluid can be discharged to the discharge area with a simpler and more compact configuration.

上記の実施形態に係る高圧タンク装置１０では、ライナ４２は、軸方向の両端に開口部６０がそれぞれ設けられ、軸方向の両端の開口部６０のそれぞれにボス部４６（給排側ボス部４６ａ、エンド側ボス部４６ｂ）が設けられることとした。この場合、給排側ボス部４６ａ及びエンド側ボス部４６ｂの両方に設けられた導出路２０と、放出路１６とにより、一時放出流体を排出域に導くことができる。これによって、被覆部７４に水素ガスが滞留することをより効果的に抑制することが可能となるため、高圧タンク１４の耐久性を一層向上させることができる。 In the high-pressure tank device 10 according to the above-described embodiment, the liner 42 is provided with the openings 60 at both ends in the axial direction. , end-side boss portions 46b) are provided. In this case, the temporarily released fluid can be led to the discharge area by the discharge passage 16 and the discharge passage 20 provided on both the supply/discharge side boss portion 46a and the end side boss portion 46b. As a result, it is possible to more effectively suppress the retention of hydrogen gas in the covering portion 74, so that the durability of the high-pressure tank 14 can be further improved.

また、給排側ボス部４６ａ及びエンド側ボス部４６ｂの両方に圧力開放手段１８が設けられることにより、例えば、非常時に高圧タンク１４が軸方向の何れか一端部側のみから火炎等に曝された場合であっても、火炎に曝された側の圧力開放手段１８を速やかに作動温度に到達させることができる。このため、高圧タンク１４の内圧が所定の大きさを上回ることをより確実に回避することが可能になる。 In addition, since the pressure release means 18 is provided on both the supply/discharge side boss portion 46a and the end side boss portion 46b, for example, the high pressure tank 14 is exposed to flames or the like only from one end side in the axial direction in an emergency. Even in such a case, the pressure release means 18 on the side exposed to the flame can reach the operating temperature quickly. Therefore, it is possible to more reliably prevent the internal pressure of the high-pressure tank 14 from exceeding a predetermined level.

上記の実施形態に係る高圧タンク装置１０では、導出路２０を流通する流体（水素ガス）の圧力損失が、放出路１６を流通する流体（水素ガス）の圧力損失よりも大きいこととした。これによって、高圧タンク１４の非常時に、ライナ４２の内部の水素ガスを導出路２０よりも放出路１６に優先して流通させることができるため、排出域への水素ガスの排出効率を向上させることができる。 In the high-pressure tank device 10 according to the above embodiment, the pressure loss of the fluid (hydrogen gas) flowing through the lead-out passage 20 is larger than the pressure loss of the fluid (hydrogen gas) flowing through the discharge passage 16. As a result, the hydrogen gas inside the liner 42 can be preferentially circulated through the discharge passage 16 rather than the lead-out passage 20 in an emergency of the high-pressure tank 14, so that the discharge efficiency of the hydrogen gas to the discharge area can be improved. can be done.

なお、上記の実施形態では、放出孔６２の圧力開放手段１８よりも下流側全体の内径に比して、導出孔６４全体の内径を小さくすることで、放出路１６に比して導出路２０の圧力損失が大きくなるように設定した。しかしながら、特にこれに限定されるものではない。例えば、導出孔６４に対して部分的に、放出路１６よりも細径となる細径部（不図示）等を１個又は複数個設けることや、導出孔６４の内面に凹凸部（不図示）を設けることや、導出孔６４に１個又は複数個の曲折部（不図示）を設けること等によって、放出路１６に比して導出路２０の圧力損失が大きくなるように設定してもよい。 In the above-described embodiment, the inner diameter of the entire lead-out hole 64 is smaller than the inner diameter of the outlet hole 62 on the downstream side of the pressure release means 18 . was set so that the pressure loss of However, it is not particularly limited to this. For example, one or a plurality of small diameter portions (not shown) having a diameter smaller than that of the discharge path 16 may be partially provided with respect to the lead-out hole 64, or uneven portions (not shown) may be provided on the inner surface of the lead-out hole 64. ) or by providing one or more bent portions (not shown) in the outlet hole 64, the pressure loss of the lead-out passage 20 may be set to be greater than that of the discharge passage 16. good.

上記の実施形態に係る高圧タンク装置１０では、圧力開放手段１８は、所定の温度まで加熱されると、高圧タンク１４の非常時であるとして、排出域とライナ４２の内部とを連通することとした。 In the high-pressure tank device 10 according to the above-described embodiment, when the pressure release means 18 is heated to a predetermined temperature, the high-pressure tank 14 is deemed to be in an emergency, and the discharge area and the inside of the liner 42 are communicated. bottom.

上記の実施形態に係る流体排出方法では、ライナ４２の開口部６０にボス部４６が設けられ、ボス部４６には、放出路１６の一部を形成する放出孔６２と、導出路２０を形成する導出孔６４とがそれぞれ設けられ、圧力開放手段１８は放出孔６２に設けられ、導出工程では、被覆部７４から導出孔６４に流体（水素ガス）を導出し、排出工程では、導出孔６４から放出孔６２の圧力開放手段１８よりも下流側に流体（水素ガス）を導出して排出域に導くこととした。 In the fluid discharge method according to the above embodiment, the boss portion 46 is provided at the opening 60 of the liner 42, and the boss portion 46 is formed with the discharge hole 62 forming part of the discharge passage 16 and the discharge passage 20. The pressure release means 18 is provided in the discharge hole 62, and in the discharge process, the fluid (hydrogen gas) is discharged from the covering portion 74 to the discharge hole 64, and in the discharge process, the discharge hole 64 The fluid (hydrogen gas) is led out from the discharge hole 62 to the downstream side of the pressure release means 18 and led to the discharge area.

上記の実施形態に係る流体排出方法では、ボス部４６は、ライナ４２の内部と外部とを連通する挿入孔８４が貫通形成された口金７６と、挿入孔８４に挿入される挿入部材７８、１４４と、を有し、放出孔６２は、挿入部材７８、１４４に設けられ、導出孔６４は、口金７６に設けられて被覆部７４に連通する第１孔部７０と、挿入部材７８、１４４に設けられて放出孔６２の圧力開放手段１８よりも下流側に連通する第２孔部７２と、を有し、導出工程では、被覆部７４から第１孔部７０に導出した流体（水素ガス）を第２孔部７２にさらに導出し、排出工程では、第２孔部７２から放出孔６２に導出した流体（水素ガス）を排出域に導くこととした。 In the fluid discharge method according to the above embodiment, the boss portion 46 includes a mouthpiece 76 through which an insertion hole 84 communicating between the inside and the outside of the liner 42 is formed, and insertion members 78 and 144 that are inserted into the insertion hole 84. The discharge hole 62 is provided in the insertion members 78 and 144, and the lead-out hole 64 is provided in the base 76 and communicates with the covering portion 74. and a second hole portion 72 that is provided and communicates downstream of the pressure release means 18 of the discharge hole 62, and in the lead-out step, the fluid (hydrogen gas) led from the covering portion 74 to the first hole portion 70. is further led out to the second hole 72, and in the discharge step, the fluid (hydrogen gas) led out from the second hole 72 to the discharge hole 62 is led to the discharge area.

上記の実施形態に係る流体排出方法では、ライナ４２は、軸方向の両端に開口部６０がそれぞれ設けられ、軸方向の両端の開口部６０のそれぞれにボス部４６が設けられ、導出工程で、被覆部７４からボス部４６のそれぞれの導出孔６４に導出した流体（水素ガス）を、排出工程により排出域に導くこととした。 In the fluid discharge method according to the above embodiment, the liner 42 is provided with the openings 60 at both ends in the axial direction, and the boss portions 46 are provided at the openings 60 at both ends in the axial direction. The fluid (hydrogen gas) led out from the covering portion 74 to the lead-out holes 64 of the boss portion 46 is led to the discharge area by the discharge process.

上記の実施形態に係る流体排出方法では、導出路２０を流通する流体（水素ガス）の圧力損失は、放出路１６を流通する流体（水素ガス）の圧力損失よりも大きく、高圧タンク１４の非常時には、ライナ４２の内部の流体（水素ガス）を、導出路２０よりも放出路１６に優先して流通させることとした。 In the fluid discharge method according to the above embodiment, the pressure loss of the fluid (hydrogen gas) flowing through the lead-out passage 20 is greater than the pressure loss of the fluid (hydrogen gas) flowing through the discharge passage 16, and the high-pressure tank 14 is in an emergency state. In some cases, the fluid (hydrogen gas) inside the liner 42 is preferentially circulated through the discharge channel 16 rather than through the lead-out channel 20 .

上記の実施形態に係る流体排出方法において、圧力開放手段１８が所定の温度まで加熱された場合に、高圧タンク１４の非常時であるとして、排出域とライナ４２の内部とを連通することとした。 In the fluid discharging method according to the above-described embodiment, when the pressure releasing means 18 is heated to a predetermined temperature, the high-pressure tank 14 is considered to be in an emergency, and the discharge area and the inside of the liner 42 are communicated. .

本発明は、上記した実施形態に特に限定されるものではなく、その要旨を逸脱しない範囲で種々の変形が可能である。 The present invention is not particularly limited to the above-described embodiments, and various modifications are possible without departing from the scope of the invention.

例えば、高圧タンク装置１０では、給排側ボス部４６ａ及びエンド側ボス部４６ｂの少なくとも何れか一方に導出路２０や放出路１６が設けられていればよい。また、高圧タンク装置１０は、エンド側ボス部４６ｂを備えていなくてもよい。この場合、ライナ４２の一端部のみに開口部６０（突出部８０）が設けられていてもよい。 For example, in the high-pressure tank device 10, at least one of the supply/discharge side boss portion 46a and the end side boss portion 46b may be provided with the lead-out path 20 and the discharge path 16. FIG. Also, the high-pressure tank device 10 may not include the end-side boss portion 46b. In this case, the opening 60 (protrusion 80) may be provided only at one end of the liner 42 .

上記の高圧タンク装置１０では、一つの高圧タンク１４を備えることとしたが、複数の高圧タンク１４を備えてもよい。給排部１２は、上記の配管３０ａ、３０ｂ、３０ｃや分岐路２４等から構成されるものに限定されず、高圧タンク１４に水素ガス（流体）を給排可能な種々の構成を採用することができる。 Although the high-pressure tank device 10 described above is provided with one high-pressure tank 14 , a plurality of high-pressure tanks 14 may be provided. The supply/discharge unit 12 is not limited to the above-mentioned pipes 30a, 30b, 30c, branch passage 24, etc., and various structures capable of supplying/discharging hydrogen gas (fluid) to/from the high-pressure tank 14 may be employed. can be done.

１０…高圧タンク装置 １４…高圧タンク
１６…放出路 １８…圧力開放手段
２０…導出路 ４０…補強層
４２…ライナ ４６…ボス部
６０…開口部 ６２…放出孔
６４…導出孔 ７０…第１孔部
７２…第２孔部 ７４…被覆部
７６…口金 ７８、１４４…挿入部材
８４…挿入孔 DESCRIPTION OF SYMBOLS 10... High-pressure tank device 14... High-pressure tank 16... Release path 18... Pressure release means 20... Lead-out path 40... Reinforcing layer 42... Liner 46... Boss portion 60... Opening 62... Release hole 64... Lead-out hole 70... First hole Part 72... Second hole 74... Coating part 76... Base 78, 144... Insertion member 84... Insertion hole

Claims (12)

補強層で覆われた樹脂製のライナの内部に流体を収容可能な高圧タンクを備える高圧タンク装置であって、
前記ライナの内部の前記流体を所定の排出域に導くことが可能な放出路と、
前記放出路に介装され、前記高圧タンクの通常時には、前記排出域と前記ライナの内部とを遮断し、前記高圧タンクの非常時に、前記排出域と前記ライナの内部とを連通する圧力開放手段と、
前記ライナと前記補強層との間である被覆部に介在する前記流体を、前記放出路の前記圧力開放手段よりも下流側に導出する導出路と、
を備え、
前記導出路は、前記圧力開放手段の下流側で前記放出路に接続されている、高圧タンク装置。 A high-pressure tank device comprising a high-pressure tank capable of containing a fluid inside a resin liner covered with a reinforcing layer,
a discharge passage capable of directing the fluid inside the liner to a predetermined discharge area;
pressure release means interposed in the discharge passage to isolate the discharge area from the inside of the liner during normal operation of the high-pressure tank, and to allow communication between the discharge area and the inside of the liner during emergency of the high-pressure tank; and,
a lead-out path for leading the fluid present in the covering portion between the liner and the reinforcing layer to a downstream side of the pressure release means of the release path;
with
A high-pressure tank device , wherein the lead-out passage is connected to the discharge passage downstream of the pressure relief means . 請求項１記載の高圧タンク装置において、
前記高圧タンクは、前記ライナの開口部に設けられるボス部を有し、
前記ボス部には、前記放出路の一部を形成する放出孔と、前記導出路を形成する導出孔と、がそれぞれ設けられ、
前記圧力開放手段は、前記放出孔に設けられ、
前記導出孔は、前記被覆部と、前記放出孔の前記圧力開放手段よりも下流側とを連通する、高圧タンク装置。 The high pressure tank system of claim 1,
The high-pressure tank has a boss provided at the opening of the liner,
The boss portion is provided with a release hole forming part of the release path and a lead-out hole forming the lead-out path,
The pressure release means is provided in the release hole,
The high-pressure tank device, wherein the lead-out hole communicates the covering portion with a downstream side of the release hole relative to the pressure release means. 請求項２記載の高圧タンク装置において、
前記ボス部は、前記ライナの内部と外部を連通する挿入孔が貫通形成された口金と、前記挿入孔に挿入される挿入部材と、を有し、
前記放出孔は、前記挿入部材に設けられ、
前記導出孔は、前記口金に設けられて前記被覆部に連通する第１孔部と、前記挿入部材に設けられて前記放出孔の前記圧力開放手段よりも下流側に連通する第２孔部と、を有する、高圧タンク装置。 In the high pressure tank system of claim 2,
The boss portion has a mouthpiece through which an insertion hole communicating between the inside and the outside of the liner is formed, and an insertion member to be inserted into the insertion hole,
the release hole is provided in the insertion member,
The lead-out hole includes a first hole portion provided in the mouthpiece and communicating with the covering portion, and a second hole portion provided in the insertion member and communicating downstream of the pressure release means of the discharge hole. A high pressure tank system comprising: 請求項２又は３記載の高圧タンク装置において、
前記ライナは、軸方向の両端に前記開口部がそれぞれ設けられ、
前記軸方向の両端の前記開口部のそれぞれに前記ボス部が設けられる、高圧タンク装置。 In the high-pressure tank device according to claim 2 or 3,
The liner is provided with the openings at both ends in the axial direction,
The high-pressure tank device, wherein the boss portions are provided in each of the opening portions on both ends in the axial direction. 請求項１～４の何れか１項に記載の高圧タンク装置において、
前記導出路を流通する前記流体の圧力損失は、前記放出路を流通する前記流体の圧力損失よりも大きい、高圧タンク装置。 In the high pressure tank device according to any one of claims 1 to 4,
The high-pressure tank device, wherein the pressure loss of the fluid flowing through the lead-out path is greater than the pressure loss of the fluid flowing through the discharge path. 請求項１～５の何れか１項に記載の高圧タンク装置において、
前記圧力開放手段は、所定の温度まで加熱されると、前記高圧タンクの非常時であるとして、前記排出域と前記ライナの内部とを連通する、高圧タンク装置。 In the high pressure tank device according to any one of claims 1 to 5,
The high-pressure tank apparatus, wherein the pressure release means establishes communication between the discharge area and the inside of the liner when the high-pressure tank is in an emergency when heated to a predetermined temperature. 補強層で覆われた樹脂製のライナの内部に流体を収容可能な高圧タンクを備える高圧タンク装置を用いた流体排出方法であって、
前記高圧タンク装置は、圧力開放手段を備え、前記圧力開放手段は、前記ライナの内部の前記流体を所定の排出域に導くことが可能な放出路に介装され、前記高圧タンクの通常時には、前記排出域と前記ライナの内部とを遮断し、前記高圧タンクの非常時に、前記排出域と前記ライナの内部とを連通し、
前記流体排出方法は、
前記ライナと前記補強層との間である被覆部に連通する導出路に前記被覆部に介在する前記流体を導出する導出工程と、
前記導出路に導出した前記流体を、前記放出路の前記圧力開放手段よりも下流側であって、前記放出路の一部である共通路を介して前記排出域に導く排出工程と、
を有する、流体排出方法。 A fluid discharge method using a high-pressure tank device including a high-pressure tank capable of containing a fluid inside a resin liner covered with a reinforcing layer,
The high-pressure tank device includes pressure release means, the pressure release means is interposed in a discharge passage capable of leading the fluid inside the liner to a predetermined discharge area, and when the high-pressure tank is normally operated, disconnecting the discharge area and the inside of the liner, and communicating the discharge area and the inside of the liner in an emergency of the high-pressure tank;
The fluid ejection method includes:
a lead-out step of leading the fluid present in the covering portion to a lead-out path communicating with the covering portion between the liner and the reinforcing layer;
a discharge step of guiding the fluid led out to the lead-out path to the discharge area through a common path, which is a part of the discharge path, downstream of the pressure release means of the discharge path;
A method of fluid ejection. 請求項７記載の流体排出方法において、
前記ライナの開口部にボス部が設けられ、前記ボス部には、前記放出路の一部を形成する放出孔と、前記導出路を形成する導出孔とがそれぞれ設けられ、前記圧力開放手段は前記放出孔に設けられ、
前記導出工程では、前記被覆部から前記導出孔に前記流体を導出し、
前記排出工程では、前記導出孔から前記放出孔の前記圧力開放手段よりも下流側に前記流体を導出して前記排出域に導く、流体排出方法。 8. The fluid ejection method of claim 7, wherein
A boss portion is provided at the opening of the liner, and the boss portion is provided with a discharge hole forming a part of the discharge passage and a discharge hole forming the discharge passage, and the pressure release means is provided in the discharge hole,
In the lead-out step, the fluid is led out from the covering portion to the lead-out hole,
In the discharging step, the fluid is discharged from the outlet hole downstream of the pressure releasing means of the discharge hole and led to the discharge area. 請求項８記載の流体排出方法において、
前記ボス部は、前記ライナの内部と外部とを連通する挿入孔が貫通形成された口金と、前記挿入孔に挿入される挿入部材と、を有し、
前記放出孔は、前記挿入部材に設けられ、
前記導出孔は、前記口金に設けられて前記被覆部に連通する第１孔部と、前記挿入部材に設けられて前記放出孔の前記圧力開放手段よりも下流側に連通する第２孔部と、を有し、
前記導出工程では、前記被覆部から前記第１孔部に導出した前記流体を前記第２孔部にさらに導出し、
前記排出工程では、前記第２孔部から前記放出孔に導出した前記流体を前記排出域に導く、流体排出方法。 The fluid ejection method of claim 8, wherein
The boss portion has a mouthpiece through which an insertion hole communicating between the inside and the outside of the liner is formed, and an insertion member to be inserted into the insertion hole,
the release hole is provided in the insertion member,
The lead-out hole includes a first hole portion provided in the mouthpiece and communicating with the covering portion, and a second hole portion provided in the insertion member and communicating downstream of the pressure release means of the discharge hole. , has
In the lead-out step, the fluid led out from the covering portion to the first hole is further led out to the second hole,
In the discharging step, the fluid discharged from the second hole portion to the discharge hole is led to the discharge area. 請求項８又は９記載の流体排出方法において、
前記ライナは、軸方向の両端に前記開口部がそれぞれ設けられ、
前記軸方向の両端の前記開口部のそれぞれに前記ボス部が設けられ、
前記導出工程で、前記被覆部から前記ボス部のそれぞれの前記導出孔に導出した前記流体を、前記排出工程により前記排出域に導く、流体排出方法。 The fluid discharge method according to claim 8 or 9,
The liner is provided with the openings at both ends in the axial direction,
The boss portion is provided in each of the openings at both ends in the axial direction,
The fluid discharge method, wherein the fluid discharged from the covering portion to the respective discharge holes of the boss portion in the discharge step is guided to the discharge area in the discharge step. 請求項７～１０の何れか１項に記載の流体排出方法において、
前記導出路を流通する前記流体の圧力損失は、前記放出路を流通する前記流体の圧力損失よりも大きく、
前記高圧タンクの非常時には、前記ライナの内部の前記流体を、前記導出路よりも前記放出路に優先して流通させる、流体排出方法。 In the fluid discharge method according to any one of claims 7 to 10,
pressure loss of the fluid flowing through the outlet passage is greater than pressure loss of the fluid flowing through the discharge passage;
A fluid discharge method, wherein, in an emergency of the high-pressure tank, the fluid inside the liner is preferentially circulated through the discharge path rather than the lead-out path. 請求項７～１１の何れか１項に記載の流体排出方法において、
前記圧力開放手段が所定の温度まで加熱された場合に、前記高圧タンクの非常時であるとして、前記排出域と前記ライナの内部とを連通する、流体排出方法。 In the fluid discharge method according to any one of claims 7 to 11,
A fluid discharge method, wherein when the pressure release means is heated to a predetermined temperature, the high pressure tank is in an emergency and the discharge area and the interior of the liner are communicated.
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