JP2002104297A - Fuel tank - Google Patents
Fuel tankInfo
- Publication number
- JP2002104297A JP2002104297A JP2000301953A JP2000301953A JP2002104297A JP 2002104297 A JP2002104297 A JP 2002104297A JP 2000301953 A JP2000301953 A JP 2000301953A JP 2000301953 A JP2000301953 A JP 2000301953A JP 2002104297 A JP2002104297 A JP 2002104297A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- liquid crystal
- crystal polymer
- fuel tank
- polymer film
- 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
- 239000002828 fuel tank Substances 0.000 title claims abstract description 29
- 229920000106 Liquid crystal polymer Polymers 0.000 claims abstract description 50
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 claims abstract description 50
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 33
- 239000000853 adhesive Substances 0.000 description 24
- 230000001070 adhesive effect Effects 0.000 description 24
- 238000000465 moulding Methods 0.000 description 24
- 239000000463 material Substances 0.000 description 13
- 239000000446 fuel Substances 0.000 description 12
- 239000004744 fabric Substances 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 235000015842 Hesperis Nutrition 0.000 description 2
- 235000012633 Iberis amara Nutrition 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、たとえば液体水素
や液体酸素等の、極低温燃料を収容するのに適した軽量
な燃料タンクに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight fuel tank suitable for containing a cryogenic fuel such as liquid hydrogen or liquid oxygen.
【０００２】[0002]
【従来の技術】宇宙を航行するロケットや将来の宇宙航
空機に装備される燃料タンクは、燃料である液体水素や
液体酸素等の極低温燃料を保管するため、極低温に耐え
る特性を備えかつ軽量であることが要求されている。2. Description of the Related Art Fuel tanks mounted on rockets for navigating space and future spacecraft are designed to store cryogenic fuels such as liquid hydrogen and liquid oxygen as fuels, and therefore have characteristics that can withstand cryogenic temperatures and are lightweight. Is required.
【０００３】現在のロケットに装備されている燃料タン
クは、アルミ合金材料を削り出し加工した後成形加工す
ることで作られている。[0003] Fuel tanks equipped with current rockets are manufactured by shaving an aluminum alloy material and then forming the same.
【０００４】[0004]
【発明が解決しようとする課題】アルミ合金製燃料タン
クは、極低温に耐える特性を具備しているが、構造的に
タンクの壁厚を薄くすることが難しく、重量を軽くする
ことに限界があり、また、削り出し加工と成形加工によ
り作られるため、製造コストが高くなってしまうという
問題がある。The aluminum alloy fuel tank has the property of withstanding extremely low temperatures, but it is structurally difficult to reduce the wall thickness of the tank, and there is a limit to reducing the weight. In addition, there is a problem that the manufacturing cost is increased because it is formed by shaving and forming.
【０００５】アルミ合金製燃料タンクの上記問題を解決
するために、アルミ合金より比強度が高く軽量である複
合材を素材として成形した燃料タンクが開発されたが、
この複合材燃料タンクは、極低温燃料を収容した極低温
時に、複合材の補強繊維と樹脂の間の熱膨張差により、
樹脂部分にマイクロクラックが発生し、気密性が維持で
きなくなるという問題がある。[0005] In order to solve the above-mentioned problems of the aluminum alloy fuel tank, a fuel tank molded from a composite material having a higher specific strength and a lighter weight than an aluminum alloy has been developed.
This composite fuel tank, at cryogenic temperature containing cryogenic fuel, due to the difference in thermal expansion between the reinforcing fiber and resin of the composite,
There is a problem that micro cracks occur in the resin portion, and airtightness cannot be maintained.
【０００６】また、複合材燃料タンクの気密性を向上さ
せるために、極低温燃料に接する内面に気密性が高いア
ルミ合金ライナを設けた複合材燃料タンクが開発された
が、この複合材燃料タンクは、アルミ合金材料を機械加
工や絞り加工で形成したアルミ合金ライナの外面に複合
材を巻き付けることで作られるため、重量的に重くコス
ト的にも割高になってしまう。In order to improve the airtightness of the composite fuel tank, a composite fuel tank provided with a highly airtight aluminum alloy liner on the inner surface in contact with the cryogenic fuel has been developed. Is made by winding a composite material around the outer surface of an aluminum alloy liner formed by machining or drawing an aluminum alloy material, which is heavy in weight and costly.
【０００７】本発明は上記した点に鑑みてなされたもの
で、タンク内層を液晶ポリマ層で形成することで、重量
増加がほとんどなく、複合材の問題点である気密性を維
持できる燃料タンクを提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and provides a fuel tank capable of maintaining the hermeticity, which is a problem of the composite material, by hardly increasing the weight by forming the tank inner layer with a liquid crystal polymer layer. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】本発明の燃料タンクは、
複合材で成形したタンク外殻の内面に液晶ポリマー層を
設けたことで、液体水素や液体酸素等の極低温燃料を収
容した場合でも高い気密性を維持できかつ軽量化を図る
ことができる。The fuel tank according to the present invention comprises:
By providing the liquid crystal polymer layer on the inner surface of the outer shell of the tank formed of the composite material, high airtightness can be maintained and the weight can be reduced even when cryogenic fuel such as liquid hydrogen or liquid oxygen is stored.
【０００９】[0009]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。図１において、符号１は本発明によ
る液体水素や液体酸素等の極低温燃料を収容するの適し
た燃料タンクを示す。燃料タンク１は、複合材で成形し
たタンク外殻２と、このタンク外殻２の上部に設けられ
たチタン合金（Ｔｉ−６Ａｌ−４Ｖ）製口金金具３と、
タンク外殻２の内面に設けられた液晶ポリマー層４とを
有する。また、タンク外殻２のの内部には、極低温燃料
の注入および排出を行う配管５と、排極低温燃料の液面
を検出するセンサを支持するセンササポート金具６と、
極低温燃料の揺れ止め具７が配置されている。配管５
は、口金金具３を通して外部に延びている。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 indicates a fuel tank suitable for storing a cryogenic fuel such as liquid hydrogen or liquid oxygen according to the present invention. The fuel tank 1 includes a tank outer shell 2 formed of a composite material, a titanium alloy (Ti-6Al-4V) metal fitting 3 provided on the upper part of the tank outer shell 2,
And a liquid crystal polymer layer 4 provided on the inner surface of the tank outer shell 2. A pipe 5 for injecting and discharging the cryogenic fuel, a sensor support bracket 6 for supporting a sensor for detecting a liquid level of the discharged cryogenic fuel, are provided inside the tank outer shell 2.
A cryogenic fuel swing stopper 7 is arranged. Piping 5
Extend outside through the base 3.
【００１０】タンク外殻２は、図１に示すように、炭素
繊維強化型エポキシ系複合材プリプレグ（織物材）を複
数枚積層して形成されたタンク半体２ａ，２ｂを互いに
結合することで構成される。各タンク半体２ａ，２ｂの
内面には、全面を覆うように常温接着剤８を介して液晶
ポリマーフィルム９が貼着されている。液晶ポリマーフ
ィルム９は、気密性の高い液晶ポリマー層４を形成す
る。As shown in FIG. 1, the tank outer shell 2 is formed by joining together tank halves 2a and 2b formed by laminating a plurality of carbon fiber reinforced epoxy composite prepregs (woven materials). Be composed. A liquid crystal polymer film 9 is adhered to the inner surfaces of the tank halves 2a and 2b via a room temperature adhesive 8 so as to cover the entire surface. The liquid crystal polymer film 9 forms the highly airtight liquid crystal polymer layer 4.
【００１１】液晶ポリマーフィルム９は、たとえば
（株）クラレ製のクラレ液晶ポリマーフィルムであり、
通常の複合材料の１００倍以上のガスバリア性を具備
し、厚さ５０μｍ程度の薄膜での成形が可能である。常
温接着剤８は、図３に示すように、タンク半体２ａ，２
ｂの内面に、１０ｍｍ幅で格子状に塗布される。常温接
着剤８を全面ではなく格子状に塗布することは、常温接
着剤８自身がシール性を持っているため、万一液晶ポリ
マー層４が破損した場合でも、極低温燃料の漏洩を液晶
ポリマー層４の格子の内側部分１０に限定でき、液晶ポ
リマー層４の補修等を容易に行うことができる。また、
全面を接着しないことにより、タンク内圧をタンク外殻
２に効率よく伝達するとともに、液晶ポリマー層４のタ
ンク内圧による高い応力の発生を抑えることができる。
ここで、タンク半体２ａ，２ｂは、図１または図４に示
すように、タンク半体２ｂの端部に拡径段部１１を形成
し、ラップする部分に常温接着剤１２を塗り、タンク半
体２ａをタンク半体２ｂの拡径段部１１に差し込むこと
で結合される。タンク半体２ａをタンク半体２ｂに差し
込む際に、タンク半体２ａの液晶ポリマーフィルム９お
よびタンク半体２ｂの液晶ポリマーフィルム９は、それ
ぞれタンク半体２ａ，２ｂから引き出され、引き出され
た液晶ポリマーフィルム９，９は、根元部分を常温接着
剤１２でタンク半体２ａ，２ｂにそれぞれ接着される。
引き出された液晶ポリマーフィルム９，９の先端部分は
高温接着剤１３により互いに接着される。The liquid crystal polymer film 9 is, for example, a Kuraray liquid crystal polymer film manufactured by Kuraray Co., Ltd.
It has a gas barrier property 100 times or more that of a general composite material, and can be formed into a thin film having a thickness of about 50 μm. The room temperature adhesive 8 is, as shown in FIG.
It is applied in a grid pattern with a width of 10 mm on the inner surface of b. Applying the room temperature adhesive 8 in a grid pattern instead of on the entire surface can prevent leakage of the cryogenic fuel even if the liquid crystal polymer layer 4 is broken because the room temperature adhesive 8 itself has a sealing property. It can be limited to the inner part 10 of the lattice of the layer 4, and the liquid crystal polymer layer 4 can be easily repaired. Also,
By not bonding the entire surface, the internal pressure of the tank can be efficiently transmitted to the tank outer shell 2, and the generation of high stress due to the internal pressure of the liquid crystal polymer layer 4 can be suppressed.
Here, as shown in FIG. 1 or FIG. 4, the tank halves 2a and 2b are formed with an enlarged diameter stepped portion 11 at the end of the tank half 2b, and the room temperature adhesive 12 is applied to the portion to be wrapped. The half body 2a is joined by inserting the half body 2a into the enlarged diameter step 11 of the tank half body 2b. When the tank half 2a is inserted into the tank half 2b, the liquid crystal polymer film 9 of the tank half 2a and the liquid crystal polymer film 9 of the tank half 2b are pulled out from the tank halves 2a and 2b, respectively, and the liquid crystal is drawn out. The base portions of the polymer films 9 and 9 are bonded to the tank halves 2a and 2b with the room temperature adhesive 12 respectively.
The leading end portions of the drawn liquid crystal polymer films 9 and 9 are bonded to each other by a high-temperature adhesive 13.
【００１２】タンク外殻２のタンク半体２ａとタンク半
体２ｂの結合部の外面には、タンク半体２ｂの端面を覆
うように高温接着剤１４を介して液晶ポリマーフィルム
１５が接着され、この液晶ポリマーフィルム１５を含む
タンク半体２ａとタンク半体２ｂの結合部を囲むように
高温接着剤１６を介してタンク半体を形成する複合材
（織物材）と同種の複合材（織物材）１７が帯状に接着
される。A liquid crystal polymer film 15 is adhered to the outer surface of the joint between the tank half 2a and the tank half 2b of the tank outer shell 2 via a high-temperature adhesive 14 so as to cover the end surface of the tank half 2b. A composite material (fabric material) of the same type as a composite material (fabric material) forming a tank half via a high-temperature adhesive 16 so as to surround the joint between the tank half 2a and the tank half 2b including the liquid crystal polymer film 15 ) 17 is adhered in a band shape.
【００１３】口金金具３は、図５に示すように、環状フ
ランジ部３ａを有し、タンク半体２ａの内側に高温接着
剤１８を張り、その内側にフランジ部３ａを置き、その
内側にタンク半体を形成する複合材（織物材）と同種の
複合材（織物材）２０を複数枚積層し、オートクレーブ
により同時に硬化接着することでタンク半体２ａの取付
け孔１９の周縁部に取付けられる。As shown in FIG. 5, the base 3 has an annular flange portion 3a, a high-temperature adhesive 18 is placed inside the tank half 2a, the flange portion 3a is placed inside the tank half 2a, and the tank 3 A plurality of composite materials (fabric materials) 20 of the same type as the composite material (fabric material) forming the half body are laminated and simultaneously attached and cured by an autoclave to be attached to the peripheral portion of the mounting hole 19 of the tank half 2a.
【００１４】つぎに、燃料タンク１の製造手順を説明す
る。準備段階として、タンク半体２ａに対応する成形面
２１ａを有する成形治具２２ａと、タンク半体２ｂに対
応する成形面２１ｂを有する成形治具２２ｂと、成形治
具２２ａの成形面２１ａの半分の面積の大きさに裁断し
た炭素繊維強化型エポキシ系複合材プリプレグ（織物
材）２３ａと、成形治具２２ｂの成形面２１ｂの半分の
面積の大きさに裁断した炭素繊維強化型エポキシ系樹脂
複合材プリプレグ（織物材）２３ｂとを用意する。Next, a procedure for manufacturing the fuel tank 1 will be described. As a preparation stage, a forming jig 22a having a forming surface 21a corresponding to the tank half 2a, a forming jig 22b having a forming surface 21b corresponding to the tank half 2b, and a half of the forming surface 21a of the forming jig 22a. And a carbon fiber reinforced epoxy composite prepreg (fabric material) 23a cut to the size of the area of the above, and a carbon fiber reinforced epoxy resin composite cut to half the area of the molding surface 21b of the molding jig 22b. A material prepreg (woven material) 23b is prepared.
【００１５】つぎに、１枚のプリプレグ２３ａを、図６
に示すように、成形治具２２ａの成形面２１ａの上に配
置し、このプリプレグ２３ａを成形治具２２ａの成形面
２１ａに沿って引っ張りながら伸ばし、成形治具２２ａ
の成形面２１ａに合わせた形状に成形したプリプレグ２
３を作る。成形したプリプレグ２３は、伸ばした部分の
織物の目が他の部分より粗くなっている。成形したプリ
プレグ２３は１２枚作られる。Next, one prepreg 23a is
As shown in FIG. 2, the prepreg 23a is arranged on the molding surface 21a of the molding jig 22a, and is stretched while being pulled along the molding surface 21a of the molding jig 22a.
2 formed into a shape conforming to the molding surface 21a of
Make 3. In the formed prepreg 23, the texture of the stretched portion of the fabric is coarser than the other portions. Twelve molded prepregs 23 are made.
【００１６】同様に、プリプレグ２３ｂを成形治具２２
ｂの成形面２１ｂの上に配置し、プリプレグ２３ｂを成
形治具２２ｂの成形面２１ｂに沿って引っ張りながら伸
ばし、成形治具２２ｂの成形面２１ｂに合わせた形状に
成形したプリプレグ２３を作る。成形したプリプレグ２
３は１２枚作られる。Similarly, the prepreg 23b is connected to the molding jig 22.
Then, the prepreg 23b is placed on the molding surface 21b of the molding jig 22b and stretched while being pulled along the molding surface 21b of the molding jig 22b to form the prepreg 23 molded into a shape conforming to the molding surface 21b of the molding jig 22b. Molded prepreg 2
3 are made 12 pieces.
【００１７】つぎに、１２枚の成形プリプレグ２３を、
図７に示すように、それぞれの伸ばした部分が重ならな
いようにしながら、成形治具２２ａの成形面２１ａの上
に積層する。同様に、１２枚の成形プリプレグ２３をそ
れぞれの伸ばした部分が重ならないようにしながら、成
形治具２２ｂの成形面２１ｂの上に積層する。Next, twelve molded prepregs 23 are
As shown in FIG. 7, the layers are stacked on the molding surface 21a of the molding jig 22a while the extended portions do not overlap. Similarly, the twelve molded prepregs 23 are stacked on the molding surface 21b of the molding jig 22b while their extended portions are not overlapped.
【００１８】つぎに、成形治具２２ａ積層されたプリプ
レグ２３および成形治具２２ｂに積層されたプリプレグ
１２を、それぞれオートクレーブに入れ、通常の高温加
圧処理することで、積層されたプリプレグ１２を硬化
し、タンク半体２ａとタンク半体２ｂが成形される。こ
の場合、タンク半体２ａとタンク半体２ｂが嵌合するよ
うに、タンク半体２ｂに拡径段部１１を形成する。この
拡径段部１１はタンク半体２ａに形成してもよい。Next, the prepregs 23 laminated on the forming jigs 22a and the prepregs 12 laminated on the forming jigs 22b are respectively placed in an autoclave and subjected to a normal high-temperature press treatment to cure the laminated prepregs 12. Then, the tank half 2a and the tank half 2b are formed. In this case, the enlarged diameter step portion 11 is formed in the tank half 2b so that the tank half 2a and the tank half 2b are fitted. This enlarged diameter step 11 may be formed on the tank half 2a.
【００１９】これとは別に、オレンジピール状に裁断し
た液晶ポリマーフィルム９を成形治具２２ａの成形面２
１ａにアイロン等の加熱工具で押し付け、液晶ポリマー
フィルム９を成形面２１ａの形状に合わせた形状に成形
する。成形したオレンジピール状液晶ポリマーフィルム
９は、側端がラップして半球形をなすように成形面２１
ａに配置され、ラップ部に高温硬化型接着剤を挟み、バ
ギング、オートクレーブ硬化され、半球形に成形され
る。Separately, the liquid crystal polymer film 9 cut into an orange peel shape is formed on the molding surface 2 of the molding jig 22a.
1a is pressed with a heating tool such as an iron to form the liquid crystal polymer film 9 into a shape conforming to the shape of the forming surface 21a. The molded orange peel-like liquid crystal polymer film 9 has a molding surface 21 such that the side edges wrap to form a hemisphere.
a, a high-temperature curable adhesive is sandwiched in the wrap portion, bagged, autoclaved, and formed into a hemispherical shape.
【００２０】同様に、オレンジピール状に裁断した液晶
ポリマーフィルム９を成形治具２２ｂの成形面２１ｂに
アイロン等の加熱工具で押し付け、液晶ポリマーフィル
ム９を成形面２１ｂの形状に合わせた形状に成形する。
成形したオレンジピール状液晶ポリマーフィルム９は、
側端がラップするように成形面２１ｂに側端がラップす
るように配置され、ラップ部に高温硬化型接着剤を挟
み、成形治具２２上でバギング、オートクレーブ硬化さ
れ、半球形に成形される。半球形に成形した液晶ポリマ
ーフィルム９，９をタンク半体２ａ，２ｂの内側に配置
し、タンク半体２ａ，２ｂとの馴染みをよくするため
に、液晶ポリマーフィルム９とタンク半体２ａおよび液
晶ポリマーフィルム９とタンク半体２ｂを同時にバギン
グする。Similarly, the liquid crystal polymer film 9 cut into an orange peel shape is pressed against the forming surface 21b of the forming jig 22b with a heating tool such as an iron to form the liquid crystal polymer film 9 into a shape conforming to the shape of the forming surface 21b. I do.
The molded orange peel liquid crystal polymer film 9 is
The side end is wrapped so that the side end is wrapped on the molding surface 21b. The high-temperature curing type adhesive is sandwiched between the wrap portions, bagging and autoclave hardening are performed on the molding jig 22 to be formed into a hemispherical shape. . The liquid crystal polymer films 9, 9 formed in a hemispherical shape are arranged inside the tank halves 2a, 2b, and the liquid crystal polymer film 9, the tank halves 2a, and the liquid crystal are formed in order to improve familiarity with the tank halves 2a, 2b. The polymer film 9 and the tank half 2b are bagged at the same time.
【００２１】つきに、タンク半体２ａ，２ｂの内面に、
図３に示すように、常温接着剤８を１０ｍｍ幅で格子状
に塗布し、タンク半体２ａ，２ｂのの上に半球形に成形
した液晶ポリマーフィルム９，９を置き、バギングし常
温硬化させる。半球形に成形した液晶ポリマーフィルム
９，９は、タンク半体２ａ，２ｂの内面に接着され気密
性の高い液晶ポリマー層４を形成する。In addition, on the inner surfaces of the tank halves 2a and 2b,
As shown in FIG. 3, the room-temperature adhesive 8 is applied in a grid shape with a width of 10 mm, and the liquid crystal polymer films 9, 9 formed in a hemispherical shape are placed on the tank halves 2a, 2b, bagged and cured at room temperature. . The hemispherically shaped liquid crystal polymer films 9, 9 are adhered to the inner surfaces of the tank halves 2a, 2b to form a highly airtight liquid crystal polymer layer 4.
【００２２】つぎに、タンク半体２ａの所定位置に、口
金金具３の取付孔１９およびセンサポート金具の取付孔
（図示せず）を機械加工で開け、センサーポート金具５
を高温硬化型エポキシ系接着剤を介して半体２ａの内側
に取付ける。口金金具３は、図５に示すように、タンク
半体２ａの内側に高温硬化型エポキシ系接着剤（高温接
着剤）１８を張り、その内側にフランジ部３ａを置き、
その内側にタンク半体を形成する複合材（織物材）と同
種の複合材（織物材）２０を複数枚積層し、オートクレ
ーブにより同時に硬化接着することでタンク半体２ａの
取付け孔１９の周縁部に取付けられ。Next, at a predetermined position of the tank half 2a, a mounting hole 19 for the base fitting 3 and a mounting hole (not shown) for the sensor port fitting are opened by machining, and the sensor port fitting 5 is opened.
Is attached to the inside of the half body 2a via a high-temperature curing type epoxy adhesive. As shown in FIG. 5, the base 3 is provided with a high-temperature-curable epoxy-based adhesive (high-temperature adhesive) 18 inside the tank half 2a and a flange 3a placed inside the same.
A plurality of composite materials (fabric materials) 20 of the same type as the composite material (fabric material) forming the tank half are laminated on the inside thereof, and simultaneously hardened and bonded by an autoclave, thereby forming a peripheral portion of the mounting hole 19 of the tank half 2a. Mounted on.
【００２３】つぎに、タンク半体２ａおよびタンク半体
２ｂの所定位置にスチール製内装品を取り付ける。内装
品のタンク半体への支持は、口金金具３の蓋の部分に溶
接で固定することでタンク半体への取り付けを極力減ら
す。しかし、内装品である液体水素燃料の揺れ止め用の
傘形薄膜構造７は、口金金具３の蓋の部分に溶接しただ
けでは安定しないため、図８に示すように、取付け金具
２５を周縁部に設け、取付け金具２５をタンク半体２ｂ
の内壁に液晶ポリマーフィルム９を介して常温接着剤８
で接着する。取付け金具２５をタンク半体２ｂの内壁に
接着する場合、取付け金具２５は、液晶ポリマーフィル
ム９に接着されるが、液晶ポリマーフィルム９の取付け
金具２５に対応する部分をタンク半体２ｂの内壁に予め
接着して置く。Next, steel interior parts are attached to predetermined positions of the tank half 2a and the tank half 2b. The support of the interior part to the tank half is fixed to the lid part of the base metal fitting 3 by welding to reduce the attachment to the tank half as much as possible. However, the umbrella-shaped thin film structure 7 for preventing the swinging of the liquid hydrogen fuel, which is an interior product, is not stable only by welding to the lid of the base 3, and as shown in FIG. And the mounting bracket 25 is attached to the tank half 2b.
Room temperature adhesive 8 via liquid crystal polymer film 9 on the inner wall of
Glue with When the mounting bracket 25 is bonded to the inner wall of the tank half 2b, the mounting bracket 25 is bonded to the liquid crystal polymer film 9, and a portion corresponding to the mounting bracket 25 of the liquid crystal polymer film 9 is bonded to the inner wall of the tank half 2b. Adhere beforehand.
【００２４】２つのタンク半体２ａ，２ｂを結合してタ
ンク外殻２を形成するには、図４に示すように、２つの
タンク半体２ａ，２ｂのラップする部分に常温接着剤８
を塗り、タンク半体２ｂの段差１１をガイドとしてタン
ク半体２ａをタンク半体２ｂの段差１１に差し込む。タ
ンク半体２ａをタンク半体２ｂに差し込む際に、液晶ポ
リマーフィルム９をそれぞれタンク半体２ａ，２ｂから
引き出し、タンク半体２ａから引き出した液晶ポリマー
フィルム９を折り返して，液晶ポリマーフィルム９の基
部を常温接着剤１２でタンク半体２ａに接着するととも
に，タンク半体２ｂから引き出した液晶ポリマーフィル
ム９の基部を常温接着剤１２でタンク半体２ｂに接着
し、さらに、液晶ポリマーフィルム９，９同士を常温接
着剤１２で接着し、液晶ポリマーフィルム９の基部でタ
ンク半体２ａ，２ｂがシールされていることを確認した
後、引き出した液晶ポリマーフィルム９，９の先端部分
に高温接着剤１３を挟み、バギング硬化させる。この工
程により、液晶ポリマーフィルム９，９は袋状を呈す
る。そして、液晶ポリマーフィルム９，９の余分な部分
を切断する。In order to form the tank shell 2 by joining the two tank halves 2a and 2b, as shown in FIG. 4, the room temperature adhesive 8 is applied to the overlapping portion of the two tank halves 2a and 2b.
Is applied, and the tank half 2a is inserted into the step 11 of the tank half 2b using the step 11 of the tank half 2b as a guide. When the tank half 2a is inserted into the tank half 2b, the liquid crystal polymer film 9 is pulled out from the tank halves 2a and 2b, respectively, and the liquid crystal polymer film 9 drawn from the tank half 2a is folded back to form a base of the liquid crystal polymer film 9. Is adhered to the tank half 2a with the room temperature adhesive 12, the base of the liquid crystal polymer film 9 drawn from the tank half 2b is adhered to the tank half 2b with the room temperature adhesive 12, and the liquid crystal polymer films 9, 9 The liquid crystal polymer films 9 and 9 are adhered to each other with a room temperature adhesive 12 to confirm that the tank halves 2a and 2b are sealed at the base of the liquid crystal polymer film 9. And bagging harden. By this step, the liquid crystal polymer films 9 and 9 have a bag shape. Then, excess portions of the liquid crystal polymer films 9 and 9 are cut.
【００２５】つぎに、タンク外殻２の半体２ａ，２ｂの
結合部の外面に、タンク半体２ｂの端面を覆うように高
温接着剤１４を介して液晶ポリマーフィルム１５を接着
し、タンク外殻２の半体２ａ，２ｂの結合部分を中心に
高温接着剤１６を必要面積張り、その上に、半体２ａ，
２ｂの複合材（織物材）と同種の複合材（織物材）を１
２プライ積層し、オートクレーブにより同時に硬化接着
を行う。Next, a liquid crystal polymer film 15 is adhered to the outer surface of the joint between the halves 2a and 2b of the tank outer shell 2 via a high-temperature adhesive 14 so as to cover the end surface of the tank half 2b. A high-temperature adhesive 16 is spread over the required area around the joint between the halves 2a and 2b of the shell 2, and the halves 2a and 2b
2b of the same type of composite material (woven material) as the composite material (woven material)
Two plies are laminated and simultaneously cured and bonded by an autoclave.
【００２６】このようにして作られた燃料タンク１は、
タンク外殻２を軽量な複合材で形成し、ライナーを気密
性の高い液晶ポリマー層４で形成している。The fuel tank 1 thus manufactured is
The tank outer shell 2 is formed of a lightweight composite material, and the liner is formed of a highly airtight liquid crystal polymer layer 4.
【００２７】以上の説明では、タンク外殻は１２枚のシ
ートで、タンク本体の複合部には１２枚の炭素繊維織物
材を使用しているがこの枚数に限る必要はなく、必要に
応じ増減することができる。In the above description, the outer shell of the tank is composed of 12 sheets, and the carbon fiber woven material is used for the composite portion of the tank body. However, the number is not limited to this number, and may be increased or decreased as necessary. can do.
【００２８】[0028]
【発明の効果】以上述べたように、本発明による燃料タ
ンクは、タンク外殻を複合材で成形し、ライナーを液晶
ポリマー層で形成したことで、軽量で高い気密性を備え
かつ低コストで作ることができる。As described above, the fuel tank according to the present invention has a light weight, high airtightness and low cost by forming the tank outer shell with a composite material and forming the liner with a liquid crystal polymer layer. Can be made.
【図１】本発明による燃料タンクの側面図。FIG. 1 is a side view of a fuel tank according to the present invention.
【図２】本発明による燃料タンクの側壁の拡大断面図。FIG. 2 is an enlarged sectional view of a side wall of a fuel tank according to the present invention.
【図３】本発明による燃料タンクの側壁内面に塗布され
る格子状常温接着剤を示す図。FIG. 3 is a view showing a grid-like room-temperature adhesive applied to the inner surface of the side wall of the fuel tank according to the present invention.
【図４】本発明による燃料タンクのタンク半体結合部分
を示す図。FIG. 4 is a diagram showing a tank half-body connection portion of a fuel tank according to the present invention.
【図５】本発明による燃料タンクの口金部分を示す図。FIG. 5 is a view showing a base portion of a fuel tank according to the present invention.
【図６】タンク半体を形成するプリプレグを成形治具に
配置した状態を示す図。FIG. 6 is a diagram showing a state in which a prepreg forming a tank half is arranged on a molding jig.
【図７】成形したプリプレグを成形治具に積層した状態
を示す図。FIG. 7 is a diagram showing a state in which the formed prepreg is laminated on a forming jig.
【図８】傘形薄膜構造の取付け状態を示す図。FIG. 8 is a diagram showing an attached state of an umbrella-shaped thin film structure.
１ 燃料タンク ２ タンク外殻 ２ａ，２ｂ タンク半体 ３ 口金金具 ４ 液晶ポリマー層 ８ 常温接着剤 ９ 液晶ポリマーフィルム DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Tank outer shell 2a, 2b Tank half body 3 Base metal fittings 4 Liquid crystal polymer layer 8 Room temperature adhesive 9 Liquid crystal polymer film
Claims (4)
ク外殻の内面に設けられた液晶ポリマー層とを有するこ
とを特徴とする燃料タンク。1. A fuel tank comprising: a tank outer shell formed of a composite material; and a liquid crystal polymer layer provided on an inner surface of the tank outer shell.
により形成されたことを特徴とする請求項１に記載の燃
料タンク。2. The fuel tank according to claim 1, wherein the liquid crystal polymer layer is formed of a liquid crystal polymer film.
介してタンク外殻の内面に接着されたことを特徴とする
請求項２に記載の燃料タンク。3. The fuel tank according to claim 2, wherein the liquid crystal polymer film is bonded to the inner surface of the outer shell of the tank via a grid-like bonding portion.
あることを特徴とする請求項１ないし３のいずれかに記
載の燃料タンク。4. The fuel tank according to claim 1, wherein the composite material is a carbon fiber reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000301953A JP2002104297A (en) | 2000-10-02 | 2000-10-02 | Fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000301953A JP2002104297A (en) | 2000-10-02 | 2000-10-02 | Fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002104297A true JP2002104297A (en) | 2002-04-10 |
Family
ID=18783402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000301953A Pending JP2002104297A (en) | 2000-10-02 | 2000-10-02 | Fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002104297A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005009559A (en) * | 2003-06-18 | 2005-01-13 | Ihi Aerospace Co Ltd | Laminated body for shell and pressure vessel using it |
| JP2006064161A (en) * | 2004-08-30 | 2006-03-09 | Fuji Heavy Ind Ltd | Very low temperature tank |
| WO2007147595A1 (en) * | 2006-06-22 | 2007-12-27 | Hochschule Wismar University Of Technology, Business And Design | Tank device and method for storing and/or transporting a substance at a cryogenic temperature |
| WO2009060747A1 (en) * | 2007-11-10 | 2009-05-14 | Kyushu Institute Of Technology | Carbon fiber reinforced prepreg having gas barrier properties and carbon fiber reinforced plastic, and processes for producing them |
| JP2013545045A (en) * | 2010-10-27 | 2013-12-19 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method of fixing equipment parts to walls and corresponding tanks |
| CN110985239A (en) * | 2019-10-31 | 2020-04-10 | 北京宇航系统工程研究所 | Lining-free composite material storage box structure |
| CN112797307A (en) * | 2020-12-30 | 2021-05-14 | 新启时代(北京)材料科技有限公司 | Composite material inner container and manufacturing method thereof |
-
2000
- 2000-10-02 JP JP2000301953A patent/JP2002104297A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005009559A (en) * | 2003-06-18 | 2005-01-13 | Ihi Aerospace Co Ltd | Laminated body for shell and pressure vessel using it |
| JP4578068B2 (en) * | 2003-06-18 | 2010-11-10 | 株式会社Ｉｈｉエアロスペース | Laminated body for shell and pressure vessel using the same |
| JP4599118B2 (en) * | 2004-08-30 | 2010-12-15 | 富士重工業株式会社 | Fuel tank |
| JP2006064161A (en) * | 2004-08-30 | 2006-03-09 | Fuji Heavy Ind Ltd | Very low temperature tank |
| US8741093B2 (en) | 2004-08-30 | 2014-06-03 | Fuji Jukogyo Kabushiki Kaisha | Tank for very low temperature liquids |
| US7669729B2 (en) | 2004-08-30 | 2010-03-02 | Fuji Jukogyo Kabushiki Kaisha | Tank for very low temperature liquids |
| WO2007147595A1 (en) * | 2006-06-22 | 2007-12-27 | Hochschule Wismar University Of Technology, Business And Design | Tank device and method for storing and/or transporting a substance at a cryogenic temperature |
| WO2009060747A1 (en) * | 2007-11-10 | 2009-05-14 | Kyushu Institute Of Technology | Carbon fiber reinforced prepreg having gas barrier properties and carbon fiber reinforced plastic, and processes for producing them |
| US7981500B2 (en) | 2007-11-10 | 2011-07-19 | Kyushu Institute Of Technology | Carbon fiber reinforced prepreg of gas barrier properties, carbon fiber reinforced plastic and methods of producing the same |
| JP2009120627A (en) * | 2007-11-10 | 2009-06-04 | Kyushu Institute Of Technology | Carbon fiber-reinforced prepreg having gas barrier property and carbon fiber-reinforced plastic, and method for producing them |
| JP2013545045A (en) * | 2010-10-27 | 2013-12-19 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method of fixing equipment parts to walls and corresponding tanks |
| CN110985239A (en) * | 2019-10-31 | 2020-04-10 | 北京宇航系统工程研究所 | Lining-free composite material storage box structure |
| CN110985239B (en) * | 2019-10-31 | 2021-04-13 | 北京宇航系统工程研究所 | Lining-free composite material storage box structure |
| CN112797307A (en) * | 2020-12-30 | 2021-05-14 | 新启时代(北京)材料科技有限公司 | Composite material inner container and manufacturing method thereof |
| CN112797307B (en) * | 2020-12-30 | 2022-07-12 | 新启时代(北京)材料科技有限公司 | Composite material inner container and manufacturing method thereof |
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