JPH07310895A - Pressure container provided with frp outer layer - Google Patents
Pressure container provided with frp outer layerInfo
- Publication number
- JPH07310895A JPH07310895A JP12811594A JP12811594A JPH07310895A JP H07310895 A JPH07310895 A JP H07310895A JP 12811594 A JP12811594 A JP 12811594A JP 12811594 A JP12811594 A JP 12811594A JP H07310895 A JPH07310895 A JP H07310895A
- Authority
- JP
- Japan
- Prior art keywords
- inner liner
- insulating layer
- pressure vessel
- liner
- electrically insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0305—Bosses, e.g. boss collars
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、強化繊維として炭素
繊維を用いたＦＲＰ外層を有する圧力容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel having an FRP outer layer using carbon fiber as a reinforcing fiber.
【０００２】[0002]
【従来の技術】炭素繊維で形成したＦＲＰ外層を有する
圧力容器は、例えば特開平４−２４９６９９号公報に公
知である。そこでは、プラスチック成形された内ライナ
をＦＲＰ外層で補強している。内ライナとしてアルミニ
ウム製の容器を用いることも知られている。ＦＲＰ外層
を有する圧力容器において、内ライナをプラスチック成
形し、その口部のみを金属で形成することは、特開昭６
２−２５５６９８号公報や特開平３−８９０９８号公報
に公知である。2. Description of the Related Art A pressure vessel having an FRP outer layer made of carbon fiber is known, for example, from Japanese Patent Laid-Open No. 249699/1992. There, a plastic molded inner liner is reinforced with an FRP outer layer. It is also known to use an aluminum container as the inner liner. In a pressure vessel having an FRP outer layer, forming the inner liner by plastic molding and forming only the mouth portion of the inner liner by metal is disclosed in Japanese Patent Laid-Open Publication No. Sho 6-62.
It is publicly known in JP-A-2-255698 and JP-A-3-89098.
【０００３】[0003]
【発明が解決しようとする課題】ＦＲＰ外層で補強され
た圧力容器には、内ライナを金属で形成したものと、内
ライナをプラスチックで形成したものとがある。前者
は、耐圧強度が大きい特長を有し、後者は容器重量が小
さい特長を有する。ＦＲＰ外層の強化繊維としては、ガ
ラス繊維を用いることが多いが、炭素繊維を用いると容
器重量をさらに減少できる。しかし、炭素繊維は電気良
導体であるので、内ライナが金属製である場合や、内ラ
イナに口金がインサート固定してある場合に、口金部で
電位差腐蝕を生じるおそれがあり、圧力容器を繰り返し
使用する際の口金の耐久性に問題がある。The pressure vessels reinforced with the FRP outer layer include those having an inner liner made of metal and those having an inner liner made of plastic. The former has a feature that the pressure resistance is large, and the latter has a feature that the container weight is small. Although glass fiber is often used as the reinforcing fiber of the FRP outer layer, the weight of the container can be further reduced by using carbon fiber. However, since carbon fiber is a good electrical conductor, there is a risk of potential difference corrosion at the base part when the inner liner is made of metal or when the base is insert-fixed to the inner liner, and the pressure vessel is used repeatedly. There is a problem with the durability of the base when doing.
【０００４】この発明の目的は、より軽量で、電位差腐
蝕を生じることがなく、繰り返し使用するのに適したＦ
ＲＰ外層を有する圧力容器を提供することにある。この
発明の他の目的は、プラスチック製の内ライナに口金が
インサートしてあって、口金部で電位差腐蝕を生じるこ
とのない圧力容器を、より低コストで形成できるように
することにある。この発明の他の目的は、内ライナとこ
れにインサートした口金との密着度を向上でき、口金周
面におけるシール性を向上できる圧力容器を得ることに
ある。An object of the present invention is that the F is lighter in weight, does not cause potential difference corrosion, and is suitable for repeated use.
It is to provide a pressure vessel having an RP outer layer. Another object of the present invention is to make it possible to form a pressure vessel in which a die is inserted in a plastic inner liner and which does not cause potential difference corrosion at the die portion at a lower cost. Another object of the present invention is to obtain a pressure vessel which can improve the degree of adhesion between the inner liner and the mouthpiece inserted into the inner liner and can improve the sealing performance on the peripheral surface of the mouthpiece.
【０００５】[0005]
【課題を解決するための手段】この発明の圧力容器は、
少なくとも口部Ｄが金属で形成してある内ライナ１と、
内ライナ１の外面を被覆する外ライナ２を含む。外ライ
ナ２は、熱硬化性の樹脂が含浸された炭素繊維製の補強
糸１２を、内ライナ１の外面に巻回積層して形成する。
内ライナ１の金属部表面と外ライナ２との間に、電位差
腐蝕を防ぐ電気絶縁層１４を設ける。The pressure vessel of the present invention comprises:
An inner liner 1 in which at least the mouth portion D is made of metal,
An outer liner 2 covering the outer surface of the inner liner 1 is included. The outer liner 2 is formed by winding and laminating a carbon fiber reinforcing yarn 12 impregnated with a thermosetting resin on the outer surface of the inner liner 1.
An electric insulating layer 14 that prevents potential difference corrosion is provided between the metal portion surface of the inner liner 1 and the outer liner 2.
【０００６】具体的には、プラスチック成形された内ラ
イナ１に金属製の口金４をインサート固定して、口部Ｄ
を設けた圧力容器においては、口金４が、内ライナ１に
埋設されるフランジ６と、内ライナ１の外面に突出する
筒軸５とを有し、少なくとも筒軸５の周面に電気絶縁層
１４を形成する。電気絶縁層１４は、電気絶縁性の粘着
テープ１６を金属部表面に貼り付けて形成できる。さら
に、電気絶縁性の樹脂を金属部表面に塗布して形成する
ことができる。口金４の筒軸５に電気絶縁材からなる成
形スリーブ１７を外嵌固定して形成することができる。
内ライナ１の成形時に、成形材を口金４の筒軸５の周面
へ導入して、電気絶縁層１４を内ライナ１と一体に形成
することができる。Specifically, a metal base 4 is insert-fixed to a plastic-molded inner liner 1, and a mouth portion D is formed.
In the pressure container provided with, the base 4 has a flange 6 embedded in the inner liner 1 and a cylinder shaft 5 projecting to the outer surface of the inner liner 1, and an electrical insulating layer is provided at least on the peripheral surface of the cylinder shaft 5. 14 is formed. The electrically insulating layer 14 can be formed by attaching an electrically insulating adhesive tape 16 to the surface of the metal portion. Further, it can be formed by applying an electrically insulating resin on the surface of the metal part. A molding sleeve 17 made of an electrically insulating material can be externally fitted and fixed to the cylindrical shaft 5 of the base 4.
At the time of molding the inner liner 1, a molding material can be introduced to the peripheral surface of the cylindrical shaft 5 of the die 4 to integrally form the electrical insulating layer 14 with the inner liner 1.
【０００７】[0007]
【作用】内ライナ１の金属部表面と外ライナ２との間に
電気絶縁層１４を設けるので、炭素繊維で形成した補強
糸１２が内ライナ１の金属部表面に接触するのを阻止で
きる。つまり電位差腐蝕を解消できる。内ライナ１に口
金４をインサート固定した圧力容器においては、内ライ
ナ１から露出する口金４の周面に電気絶縁層１４を形成
するだけで足りる。電気絶縁層１４は、樹脂を金属部表
面に塗布して形成できるが、内ライナ１に口金４をイン
サートする際に、予め口金４に内ライナ１と同じ素材の
樹脂を塗布しておけば、口金４と内ライナ１とが十分に
密着する状態で成形を行うことができる。Since the electric insulating layer 14 is provided between the metal portion surface of the inner liner 1 and the outer liner 2, it is possible to prevent the reinforcing thread 12 formed of carbon fiber from coming into contact with the metal portion surface of the inner liner 1. That is, potential difference corrosion can be eliminated. In the pressure vessel in which the mouthpiece 4 is insert-fixed to the inner liner 1, it suffices to form the electric insulating layer 14 on the peripheral surface of the mouthpiece 4 exposed from the inner liner 1. The electric insulating layer 14 can be formed by applying a resin to the surface of the metal portion. However, when inserting the mouthpiece 4 into the inner liner 1, if the resin of the same material as the inner liner 1 is applied to the mouthpiece 4 in advance, Molding can be performed in a state where the die 4 and the inner liner 1 are sufficiently in close contact with each other.
【０００８】[0008]
【発明の効果】この発明では、内ライナ１の金属部表面
を電気絶縁層１４で覆って、炭素繊維製の補強糸１２が
内ライナ１の金属部表面に直接接触するのを防止し、そ
こで電位差腐蝕が生じるのを解消した。従って、この発
明によれば、例えばガラス繊維でＦＲＰ外層を形成した
圧力容器に比べて、より軽量で電位差腐蝕を生じること
のない圧力容器が得られ、該容器を繰り返し使用する用
途に安心して適用できる。内ライナ１をプラスチック成
形し、その肉壁に口金４をインサートした圧力容器によ
れば、容器重量をさらに減少できるうえ、内ライナ１か
ら露出する口金４の周面に電気絶縁層１４を形成するだ
けで済むので、圧力容器をより低コストで形成できる。According to the present invention, the surface of the metal portion of the inner liner 1 is covered with the electric insulating layer 14 to prevent the carbon fiber reinforcing yarn 12 from directly contacting the surface of the metal portion of the inner liner 1. Eliminates potential difference corrosion. Therefore, according to the present invention, as compared with a pressure vessel in which an FRP outer layer is formed of glass fiber, for example, a pressure vessel which is lighter in weight and does not cause potential difference corrosion can be obtained, and can be safely applied to applications where the vessel is used repeatedly. it can. According to the pressure vessel in which the inner liner 1 is plastic-molded and the mouthpiece 4 is inserted in the wall thereof, the weight of the vessel can be further reduced, and the electric insulating layer 14 is formed on the peripheral surface of the mouthpiece 4 exposed from the inner liner 1. Since this is sufficient, the pressure vessel can be formed at a lower cost.
【０００９】予め口金４に内ライナ１と同じ素材の樹脂
を塗布しておいて、口金４を内ライナ１の成形時にイン
サートする圧力容器では、成形時における口金４と内ラ
イナ１の密着度を向上して、両者の境界付近で成形欠陥
が生じることを良く防止でき、これに伴って、口金４の
周面におけるシール性を向上できる。とくに、内ライナ
１を回転成形法で成形する場合には、流動する溶融樹脂
を金型および口金４に付着させて、つまり無加圧下で肉
壁を形成するので、口金４の表面に内ライナ１の肉壁を
十分に密着させることが困難であるが、こうした場合に
でも十分なシール性が得られ、そのために予め塗布した
結着層１３を電気絶縁層１４として利用できる点で有利
である。In a pressure vessel in which a resin of the same material as the inner liner 1 is applied to the mouthpiece 4 in advance, and the mouthpiece 4 is inserted at the time of molding the inner liner 1, the degree of adhesion between the mouthpiece 4 and the inner liner 1 at the time of molding is improved. It is possible to improve, and it is possible to prevent the occurrence of molding defects near the boundary between the both, so that the sealing property on the peripheral surface of the die 4 can be improved accordingly. Particularly, when the inner liner 1 is molded by the rotational molding method, the flowing molten resin is adhered to the mold and the die 4, that is, the meat wall is formed under no pressure. Therefore, the inner liner is formed on the surface of the die 4. Although it is difficult to bring the wall of No. 1 into close contact, it is advantageous in that a sufficient sealing property can be obtained even in such a case, and therefore the binding layer 13 previously applied can be used as the electrical insulating layer 14. .
【００１０】[0010]
【実施例】図２の圧力容器は、圧縮天然ガスの車載用ボ
ンベであって、回転成形装置で成形した横長円筒状の内
ライナ１と、内ライナ１の外面を被覆する外ライナ２と
からなる。内ライナ１の左右端には、部分球殻状の端壁
３が設けてあり、その中央にアルミニウム合金で形成し
た口金４をインサート固定して口部Ｄを設けている。内
ライナ１は、ガスバリア性に優れたポリアミド、ポリエ
チレン、ポリスチレンなどを成形材にして形成する。EXAMPLE A pressure vessel of FIG. 2 is an on-vehicle cylinder of compressed natural gas, which comprises an inner liner 1 having a horizontally long cylindrical shape formed by a rotational forming device and an outer liner 2 covering an outer surface of the inner liner 1. Become. Partial spherical shell-shaped end walls 3 are provided at the left and right ends of the inner liner 1, and a mouthpiece D formed by inserting and fixing a mouthpiece 4 made of an aluminum alloy in the center thereof. The inner liner 1 is formed by using a molding material such as polyamide, polyethylene, or polystyrene, which has excellent gas barrier properties.
【００１１】図１において、口金４は筒軸５の内端に円
形のフランジ６が一体に張り出してあり、筒軸５の外端
側の内周面にバルブや計器などの外装付属品をねじ込む
ための雌ねじ７と、シールリング用の装填座８とを有す
る。フランジ６の周縁寄りの周方向６個所には、等間隔
置きに通孔９を有する。筒軸５のフランジ６寄りの外周
面には、フランジ６側を小径端とするテーパー壁からな
るくびれ部１０を設ける。In FIG. 1, the mouthpiece 4 has a circular flange 6 integrally projecting from the inner end of a cylinder shaft 5, and external accessories such as valves and instruments are screwed into the inner peripheral surface of the cylinder shaft 5 on the outer end side. And a loading seat 8 for a seal ring. Through holes 9 are formed at six positions in the circumferential direction near the periphery of the flange 6 at equal intervals. On the outer peripheral surface of the cylinder shaft 5 near the flange 6, a constricted portion 10 formed of a tapered wall having a small diameter end on the flange 6 side is provided.
【００１２】先に述べたように、内ライナ１は回転成形
法によって成形し、その端壁３の肉壁内に口金４をイン
サートする。このとき、フランジ６と金型との間の隙間
に成形材が流入し難いが、フランジ６に通孔９を形成し
てあるので、成形材は通孔９を介して前記隙間へ流入
し、口金４のインサートを成形欠陥を生じることなく確
実に行える。さらに、各通孔９の中心軸線を筒軸５の軸
中心へ向かって傾斜させているので、成形材の流入をさ
らに促進できる。くびれ部１０を逆テーパー状に形成す
るのは、口金４に落下衝撃などの外力が作用するとき、
外力をテーパー壁を介して外ライナ２へ伝え、口金４が
容器内方へ陥没するのを避けるためである。As described above, the inner liner 1 is molded by the rotational molding method, and the die 4 is inserted into the wall of the end wall 3 of the inner liner 1. At this time, the molding material hardly flows into the gap between the flange 6 and the mold, but since the through hole 9 is formed in the flange 6, the molding material flows into the gap through the through hole 9, The insert of the mouthpiece 4 can be surely performed without forming defects. Furthermore, since the central axis of each through hole 9 is inclined toward the axial center of the cylinder shaft 5, the inflow of the molding material can be further promoted. The constricted portion 10 is formed in a reverse taper shape when an external force such as a drop impact acts on the mouthpiece 4.
This is because external force is transmitted to the outer liner 2 via the tapered wall and the base 4 is prevented from being depressed inside the container.
【００１３】外ライナ２は、熱硬化性の樹脂を含浸した
炭素繊維製の補強糸１２を、フィラメントワインディン
グ法に従って一対の口金４に巻き掛けながら巻回積層し
て形成する。熱硬化性の樹脂としては、エポキシ、フェ
ノール、不飽和ポリエステルなどを適用できる。上記の
ように、補強糸１２を口金４に巻き掛けながら内ライナ
１の外面に巻回積層すると、補強糸１２と接触する口金
４の表面において電位差腐蝕を生じるおそれがある。こ
れを防ぎ、さらに回転成形時における口金４と内ライナ
１の密着度を向上するために、予め口金４に内ライナ１
と同じ素材の樹脂を塗布しておいて、これを内ライナ１
にインサートする。The outer liner 2 is formed by winding and laminating a carbon fiber reinforcing thread 12 impregnated with a thermosetting resin around a pair of caps 4 according to a filament winding method. As the thermosetting resin, epoxy, phenol, unsaturated polyester or the like can be applied. As described above, when the reinforcing thread 12 is wound around the spinneret 4 and wound and laminated on the outer surface of the inner liner 1, the potential difference corrosion may occur on the surface of the spinneret 4 that contacts the reinforcing thread 12. In order to prevent this and further improve the degree of adhesion between the mouthpiece 4 and the inner liner 1 during rotational molding, the inner liner 1 is previously attached to the mouthpiece 4.
Apply the resin of the same material as the above, and apply this to the inner liner 1
To insert.
【００１４】具体的には、装填座８、雌ねじ７、および
ねじ穴に連続する通口を除く口金４の外周面を粗面化し
た後、図３に示すようにそこに内ライナ１と同じ樹脂を
塗布して焼き付け固定し結着層１３を形成する。粗面化
された表面は、口金４の外周面を旋削する際に荒仕上げ
したままにすることで得られる。ショットブラストやサ
ンドブラストによって、あるいは化学薬品で蝕刻して粗
面化することができる。口金４の全体を例えばダイキャ
スト法で成形する場合には、粗面を一体に形成すること
ができる。口金４に塗布する樹脂は、電気絶縁性を備え
ていることが必要であるが、先に例示した樹脂であれば
いずれであってもよい。結着層１３の厚みは0.２〜1.０
mmとし、とくに、補強糸１２と接触する筒軸５の周面に
おける厚みを他より大きくすることが好ましい。Specifically, after roughening the outer peripheral surface of the mouthpiece 4 except for the loading seat 8, the female screw 7, and the through hole continuing to the screw hole, as shown in FIG. 3, there is the same as the inner liner 1 there. A resin is applied and fixed by baking to form a binding layer 13. The roughened surface can be obtained by leaving the rough finish when turning the outer peripheral surface of the die 4. It can be roughened by shot blasting or sand blasting, or by chemical etching. When the entire die 4 is formed by, for example, the die casting method, the rough surface can be integrally formed. The resin applied to the base 4 is required to have electrical insulation, but any resin may be used as long as it is the resin exemplified above. The thickness of the binding layer 13 is 0.2 to 1.0.
In particular, it is preferable that the peripheral surface of the cylindrical shaft 5 that is in contact with the reinforcing yarn 12 be thicker than others.
【００１５】結着層１３で覆われた口金４を成形用金型
に装着し、内ライナ１を成形することによって、結着層
１３の表面が溶けて成形材と一体化するので、内ライナ
１と口金４とは結着層１３を介して完全に密着し、無加
圧下で成形を行うにも拘らず、口金４のインサート個所
のシール性を向上できる。結着層１３は筒軸５の周面の
全体を覆っていて、補強糸１２を内ライナ１に巻回積層
した状態では、補強糸１２が筒軸５に直接接触するのを
防げている。つまり、結着層１３のうち筒軸５の周面の
部分を電気絶縁層１４に利用して、筒軸５の周面で電位
差腐蝕が生じるのを防止している。このように、結着層
１３を利用して電気絶縁層１４を形成すると、内ライナ
１の成形後に電気絶縁層１４を形成する手間を省くこと
ができ、別途電気絶縁層１４を形成する場合に比べて、
その加工費用が少なくて済む。By mounting the die 4 covered with the binder layer 13 on the molding die and molding the inner liner 1, the surface of the binder layer 13 is melted and integrated with the molding material, so that the inner liner is formed. 1 and the base 4 are completely adhered to each other via the binding layer 13, and the sealing property of the insert portion of the base 4 can be improved even though the molding is performed under no pressure. The binding layer 13 covers the entire peripheral surface of the tubular shaft 5, and prevents the reinforcing yarn 12 from directly contacting the tubular shaft 5 when the reinforcing yarn 12 is wound and laminated on the inner liner 1. That is, the portion of the peripheral surface of the cylinder shaft 5 of the binding layer 13 is used as the electrical insulating layer 14 to prevent potential difference corrosion from occurring on the peripheral surface of the cylinder shaft 5. As described above, when the electrical insulating layer 14 is formed by using the binding layer 13, it is possible to save the labor of forming the electrical insulating layer 14 after the inner liner 1 is molded, and when the electrical insulating layer 14 is separately formed. Compared to,
The processing cost is low.
【００１６】電気絶縁層１４は、上記の実施例とは異な
る手法で形成することができる。図４に示すように、内
ライナ１の外面に突出する口金４の筒軸５に、電気絶縁
性の粘着テープ１６を巻き付けて電気絶縁層１４を形成
できる。結着層１３を利用して形成した電気絶縁層１４
の外面に粘着テープ１６をさらに巻き付けて、電気絶縁
層１４の厚みを大きくすることができる。The electrically insulating layer 14 can be formed by a method different from that of the above embodiment. As shown in FIG. 4, the electrically insulating adhesive tape 16 can be wound around the cylindrical shaft 5 of the mouthpiece 4 protruding to the outer surface of the inner liner 1 to form the electrically insulating layer 14. Electrical insulating layer 14 formed using the binding layer 13
The thickness of the electrical insulating layer 14 can be increased by further winding the adhesive tape 16 on the outer surface of the.
【００１７】図５に示すように、成形スリーブ１７を口
金４の筒軸５に外嵌固定して電気絶縁層１４とすること
ができる。成形スリーブ１７は、取扱上プラスチック成
形品であることが好ましいが、セラミックス、ガラスな
どの電気不良導体の成形品であってもよい。成形スリー
ブ１７は、口金４に対して圧嵌固定し、あるいは接着固
定する。筒軸５の周面にねじを形成しておき、成形スリ
ーブ１７をねじ込んで固定することもできる。成形スリ
ーブ１７を用いる場合には、筒軸５の周面に先の実施例
で説明したくびれ部１０を形成することができない。し
かし、成形スリーブ１７の外面をくびれ部１０と同様に
逆テーパー状に形成しておけば、筒軸５にくびれ部１０
を設けたのと同じ作用を発揮して、外力によって口金４
が容器内方へ陥没するのを防止できる。As shown in FIG. 5, the molding sleeve 17 can be externally fitted and fixed to the cylindrical shaft 5 of the base 4 to form the electrical insulating layer 14. The molding sleeve 17 is preferably a plastic molded product for handling, but may be a molded product of an electrically defective conductor such as ceramics or glass. The molding sleeve 17 is press-fitted or fixed to the base 4 by adhesive bonding. It is also possible to form a screw on the peripheral surface of the cylindrical shaft 5 and screw the molding sleeve 17 to fix it. When the forming sleeve 17 is used, the constricted portion 10 described in the previous embodiment cannot be formed on the peripheral surface of the cylindrical shaft 5. However, if the outer surface of the molding sleeve 17 is formed in an inverted taper shape like the constricted portion 10, the constricted portion 10 is formed on the cylindrical shaft 5.
It exerts the same effect as the one where the
Can be prevented from collapsing inward of the container.
【００１８】図６に示す内ライナ１では、内ライナ１の
成形材を筒軸５の周面にまで導入して、電気絶縁層１４
を内ライナ１と一体に形成した。In the inner liner 1 shown in FIG. 6, the molding material of the inner liner 1 is introduced up to the peripheral surface of the cylindrical shaft 5 so that the electric insulating layer 14 is formed.
Was integrally formed with the inner liner 1.
【００１９】上記の実施例以外に、結着層１３は口金４
の全体を溶融樹脂や樹脂性塗料に浸漬して形成すること
ができる。電気絶縁層１４は、電気絶縁性のパテを筒軸
５の周面に付着し固化させて形成することができる。ガ
ラス繊維製あるいは有機繊維製のシートやマットを筒軸
５の周面に巻付け固定して電気絶縁層１４とすることが
できる。内ライナ１は、全体が例えばアルミニウムで形
成してあってもよい。この場合には、内ライナ１の外面
の全体に電気絶縁層１４を形成する。例えば、電気絶縁
性の樹脂を内ライナ１の外面にコーティングする。ある
いはガラス繊維製の補強糸で内ライナ１の外面を覆って
電気絶縁層１４とすることができる。本発明の圧力容器
は、エアバッグ用の空気ボンベや、航空機用の各種の圧
力容器にも適用できる。内ライナ１は回転成形法以外の
プラスチック成形法で形成してもよい。口金４は内ライ
ナ１の片方の端壁３にのみ設けることができる。In addition to the above-mentioned embodiments, the binding layer 13 is the base 4
Can be formed by immersing the whole of it in a molten resin or a resinous paint. The electrically insulating layer 14 can be formed by attaching an electrically insulating putty to the peripheral surface of the cylindrical shaft 5 and solidifying the putty. A sheet or mat made of glass fiber or organic fiber can be wound around and fixed to the peripheral surface of the cylindrical shaft 5 to form the electric insulating layer 14. The inner liner 1 may be entirely formed of aluminum, for example. In this case, the electrical insulating layer 14 is formed on the entire outer surface of the inner liner 1. For example, the outer surface of the inner liner 1 is coated with an electrically insulating resin. Alternatively, the outer surface of the inner liner 1 may be covered with a reinforcing fiber made of glass fiber to form the electrical insulating layer 14. The pressure vessel of the present invention can be applied to an air cylinder for an air bag and various pressure vessels for aircraft. The inner liner 1 may be formed by a plastic molding method other than the rotational molding method. The base 4 can be provided only on one end wall 3 of the inner liner 1.
【図１】口金部の断面図である。FIG. 1 is a cross-sectional view of a cap portion.
【図２】圧力容器の一部破断正面図である。FIG. 2 is a partially cutaway front view of the pressure vessel.
【図３】口金の一部破断正面図である。FIG. 3 is a partially cutaway front view of a die.
【図４】電気絶縁層の別実施例を示す口金部の正面図で
ある。FIG. 4 is a front view of a mouthpiece part showing another embodiment of the electrically insulating layer.
【図５】電気絶縁層の別実施例を示す口金部の一部破断
正面図である。FIG. 5 is a partially cutaway front view of a mouthpiece showing another embodiment of the electric insulation layer.
【図６】電気絶縁層の別実施例を示す口金部の断面図で
ある。FIG. 6 is a cross-sectional view of a mouthpiece part showing another embodiment of the electrically insulating layer.
１ 内ライナ ２ 外ライナ ４ 口金 ５ 筒軸 ６ フランジ １２ 補強糸 １３ 結着層 １４ 電気絶縁層 Ｄ 口部 1 Inner Liner 2 Outer Liner 4 Clasp 5 Cylindrical Shaft 6 Flange 12 Reinforcing Thread 13 Binder Layer 14 Electrical Insulation Layer D Portion
Claims (6)
内ライナ１と、内ライナ１の外面を被覆する外ライナ２
を含む圧力容器であって、 外ライナ２は、熱硬化性の樹脂が含浸された炭素繊維製
の補強糸１２を、内ライナ１の外面に巻回積層して形成
されており、 内ライナ１の金属部表面と外ライナ２との間に、電位差
腐蝕を防ぐ電気絶縁層１４が設けてあることを特徴とす
るＦＲＰ外層を有する圧力容器。1. An inner liner 1 having at least a mouth portion D formed of a metal, and an outer liner 2 covering an outer surface of the inner liner 1.
The outer liner 2 is formed by winding a reinforcing fiber 12 made of carbon fiber impregnated with a thermosetting resin around the outer surface of the inner liner 1 and laminating the inner liner 1. A pressure vessel having an FRP outer layer, characterized in that an electric insulating layer 14 for preventing potential difference corrosion is provided between the surface of the metal part and the outer liner 2.
属製の口金４をインサート固定して口部Ｄが設けられて
おり、 口金４は、内ライナ１に埋設されるフランジ６と、内ラ
イナ１の外面に突出する筒軸５とを有し、少なくとも筒
軸５の周面に電気絶縁層１４が形成してある請求項１記
載のＦＲＰ外層を有する圧力容器。2. A plastic die-molded inner liner 1 is provided with a mouth piece D by insert-fixing a metal die 4 therein. The mouth piece 4 is provided with a flange 6 embedded in the inner liner 1 and an inner liner 1. The pressure vessel having the FRP outer layer according to claim 1, further comprising a cylindrical shaft 5 protruding from the outer surface of the FRP outer surface, and an electric insulating layer 14 formed on at least the peripheral surface of the cylindrical shaft 5.
ープ１６を金属部表面に貼り付けて形成してある請求項
１又は２記載のＦＲＰ外層を有する圧力容器。3. The pressure vessel having an FRP outer layer according to claim 1, wherein the electrically insulating layer 14 is formed by attaching an electrically insulating adhesive tape 16 to the surface of the metal part.
金属部表面に塗布して形成してある請求項１又は２記載
のＦＲＰ外層を有する圧力容器。4. The pressure vessel having an FRP outer layer according to claim 1, wherein the electrically insulating layer 14 is formed by coating an electrically insulating resin on the surface of the metal portion.
気絶縁材からなる成形スリーブ１７を外嵌固定して形成
してある請求項２記載のＦＲＰ外層を有する圧力容器。5. The pressure vessel having an FRP outer layer according to claim 2, wherein the electrically insulating layer 14 is formed by externally fitting and fixing a molding sleeve 17 made of an electrically insulating material to the cylindrical shaft 5 of the base 4.
の筒軸５の周面へ導入して、電気絶縁層１４を内ライナ
１と一体に形成した請求項２記載のＦＲＰ外層を有する
圧力容器。6. When molding the inner liner 1, a molding material is used for the base 4
The pressure vessel having an FRP outer layer according to claim 2, wherein the electric insulating layer 14 is formed integrally with the inner liner 1 by being introduced to the peripheral surface of the cylindrical shaft 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12811594A JPH07310895A (en) | 1994-05-17 | 1994-05-17 | Pressure container provided with frp outer layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12811594A JPH07310895A (en) | 1994-05-17 | 1994-05-17 | Pressure container provided with frp outer layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07310895A true JPH07310895A (en) | 1995-11-28 |
Family
ID=14976754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12811594A Pending JPH07310895A (en) | 1994-05-17 | 1994-05-17 | Pressure container provided with frp outer layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07310895A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007263290A (en) * | 2006-03-29 | 2007-10-11 | Fuji Heavy Ind Ltd | Pressure-resistant container |
| WO2008072046A1 (en) * | 2006-12-13 | 2008-06-19 | Toyota Jidosha Kabushiki Kaisha | Pressure container |
| JP2011085230A (en) * | 2009-10-19 | 2011-04-28 | Toyota Motor Corp | Tank and method of manufacturing the same |
| US20140096895A1 (en) * | 2011-05-23 | 2014-04-10 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing gas tank |
| JP2016105003A (en) * | 2014-12-01 | 2016-06-09 | トヨタ自動車株式会社 | tank |
| BE1028736B1 (en) * | 2021-03-09 | 2022-05-18 | Ams Belgium | HUB LINING STRUCTURE FOR TYPE IV PRESSURE VESSEL |
-
1994
- 1994-05-17 JP JP12811594A patent/JPH07310895A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2000734A4 (en) * | 2006-03-29 | 2011-07-06 | Fuji Heavy Ind Ltd | Pressure-resistant vessel |
| WO2007119444A1 (en) * | 2006-03-29 | 2007-10-25 | Fuji Jukogyo Kabushiki Kaisha | Pressure-resistant vessel |
| JP2007263290A (en) * | 2006-03-29 | 2007-10-11 | Fuji Heavy Ind Ltd | Pressure-resistant container |
| EP2000734A2 (en) * | 2006-03-29 | 2008-12-10 | Fuji Jukogyo Kabushiki Kaisha | Pressure-resistant vessel |
| US8231028B2 (en) | 2006-03-29 | 2012-07-31 | Fuji Jukogyo Kabushiki Kaisha | Pressure resistant container with sealed mouth entrance |
| DE112007002491T5 (en) | 2006-12-13 | 2009-08-06 | Toyota Jidosha Kabushiki Kaisha, Toyota-shi | pressure vessel |
| US8087537B2 (en) | 2006-12-13 | 2012-01-03 | Toyota Jidosha Kabushiki Kaisha | Pressure container |
| WO2008072046A1 (en) * | 2006-12-13 | 2008-06-19 | Toyota Jidosha Kabushiki Kaisha | Pressure container |
| JP2011085230A (en) * | 2009-10-19 | 2011-04-28 | Toyota Motor Corp | Tank and method of manufacturing the same |
| US8839979B2 (en) | 2009-10-19 | 2014-09-23 | Toyota Jidosha Kabushiki Kaisha | Tank and tank manufacturing method |
| US20140096895A1 (en) * | 2011-05-23 | 2014-04-10 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing gas tank |
| US9211683B2 (en) * | 2011-05-23 | 2015-12-15 | Toyota Jidosha Kabushiki Kaisha | Method for manufacturing gas tank |
| JP2016105003A (en) * | 2014-12-01 | 2016-06-09 | トヨタ自動車株式会社 | tank |
| BE1028736B1 (en) * | 2021-03-09 | 2022-05-18 | Ams Belgium | HUB LINING STRUCTURE FOR TYPE IV PRESSURE VESSEL |
| WO2022189922A1 (en) * | 2021-03-09 | 2022-09-15 | Ams Belgium | Boss-liner structure for a type iv pressure vessel |
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