JPH06331032A - Pressure vessel - Google Patents
Pressure vesselInfo
- Publication number
- JPH06331032A JPH06331032A JP13918993A JP13918993A JPH06331032A JP H06331032 A JPH06331032 A JP H06331032A JP 13918993 A JP13918993 A JP 13918993A JP 13918993 A JP13918993 A JP 13918993A JP H06331032 A JPH06331032 A JP H06331032A
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- pressure vessel
- pressure
- reinforcing material
- layers
- 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
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
(57)【要約】
【目的】 ＦＲＰ製の圧力容器の提供。
【構成】 金属製のライナー材１の外側に、樹脂被覆を
施した強化材１７ａ，１５ａ，１４ａを巻き付けて、繊
維強化プラスチック製の被覆層１７，１５，１４を形成
した圧力容器において、前記被覆層１７，１５，１４
を、強化材１７ａ，１５ａ，１４ａの種類を異ならせて
２層以上に形成し、外径側の被覆層１５（１４）を内径
側の被覆層１７（１５）よりも引張弾性率を大きく設定
し、圧力容器に所定の内圧Ｐが作用した際、各被覆層１
７，１５，１４の内径部に作用する周方向の引張応力σ
ｔの大きさをほぼ合致させる。
【効果】 周方向の引張応力の勾配がほぼ平坦になり、
一様分布応力化する。その結果、ＦＲＰ製の各被覆層の
強度が有効活用されることとなり、高耐圧力が得られる
と共に、単位重量当たりの耐圧力が向上するので、安価
かつ軽量化が確保される。
(57) [Summary] [Purpose] To provide a pressure vessel made of FRP. [Structure] In a pressure vessel in which a reinforcing material 17a, 15a, 14a coated with a resin is wound around a metal liner material 1 to form a covering layer 17, 15, 14 made of a fiber reinforced plastic. Layers 17, 15, 14
Of the reinforcing materials 17a, 15a, 14a are formed in two or more layers, and the outer diameter side coating layer 15 (14) is set to have a larger tensile elastic modulus than the inner diameter side coating layer 17 (15). When a predetermined internal pressure P acts on the pressure vessel, each coating layer 1
Circumferential tensile stress σ acting on the inner diameter of 7, 15, 14
Approximately match the size of t. [Effect] The tensile stress gradient in the circumferential direction becomes almost flat,
Uniform stress distribution. As a result, the strength of each FRP coating layer is effectively utilized, high withstand pressure is obtained, and the withstand pressure per unit weight is improved, so that inexpensive and lightweight can be secured.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧力容器に関するもの
である。FIELD OF THE INVENTION The present invention relates to a pressure vessel.
【０００２】[0002]
【従来の技術】従来の空気ボンベにて代表される圧力容
器として、図６に示すようなものが知られている。すな
わち、金属製のライナー材５０の外側に、樹脂被覆した
単一の種類の強化材をフイラメントワインデイング法に
て巻き付けて、繊維強化プラスチック製（以下、「ＦＲ
Ｐ製」という。）の被覆層５１を形成してある。この種
の比較的厚肉の圧力容器において、所定の内圧Ｐが作用
して膨出変形すると、被覆層５１では、周方向の引張応
力σｔが内径側から外径側へと漸減し、厚さ方向に引張
応力σｔの連続する勾配を生ずる。これは、引張弾性率
が一定である単一種類の強化材において、引張応力σｔ
が周方向引張歪に応じて発生することに起因する。しか
して、被覆層５１の最内径面に最大歪ひいては最大引張
応力σｔ1を生ずるため、この最大引張応力σｔ1 がＦ
ＲＰ製の被覆層５１の破断応力（破断歪）に達すると、
圧力容器が破壊に至る。2. Description of the Related Art As a pressure vessel represented by a conventional air cylinder, one shown in FIG. 6 is known. That is, a single type of reinforcing material coated with resin is wound around the outside of the metal liner material 50 by the filament winding method, and is made of fiber reinforced plastic (hereinafter referred to as “FR”).
Made by P ”. 2) is formed. In a relatively thick pressure vessel of this type, when a predetermined internal pressure P acts to cause bulging and deformation, the tensile stress σt in the circumferential direction of the coating layer 51 gradually decreases from the inner diameter side to the outer diameter side, and the thickness Produces a continuous gradient of tensile stress σt in the direction. This means that in a single type of reinforcement with a constant tensile modulus, the tensile stress σt
Due to the tensile strain in the circumferential direction. Then, since the maximum strain and thus the maximum tensile stress σt 1 are generated on the innermost surface of the coating layer 51, this maximum tensile stress σt 1 is F
When the breaking stress (breaking strain) of the coating layer 51 made of RP is reached,
The pressure vessel is destroyed.
【０００３】このように、従来の圧力容器にあつては、
単一種類の強化材を巻き付けてＦＲＰ製の被覆層５１を
形成してあるため、被覆層５１の最内径面に破断応力を
生じて圧力容器が破壊される際であつても、被覆層５１
の外径側では周方向の引張応力σｔ4 が充分に小さい状
態にある。従つて、ＦＲＰ製の被覆層５１の本来の強度
が有効活用されず、耐圧性に劣る。加えて、この傾向
は、ＦＲＰ製の被覆層５１の厚肉が厚くなるほど大きく
なるため、軽量化（圧力／重量）の妨げとなり、単一種
類の強化材の使用により、コスト面でも不利になる。Thus, in the conventional pressure vessel,
Since the FRP covering layer 51 is formed by winding a single type of reinforcing material, the covering layer 51 is broken even when the pressure vessel is broken due to breaking stress on the innermost surface of the covering layer 51.
On the outer diameter side, the circumferential tensile stress σt 4 is in a sufficiently small state. Therefore, the original strength of the FRP coating layer 51 is not effectively utilized and the pressure resistance is poor. In addition, this tendency increases as the thickness of the FRP cover layer 51 increases, which hinders weight reduction (pressure / weight), and the use of a single type of reinforcing material also leads to a cost disadvantage. .
【０００４】[0004]
【課題を解決するための手段】本発明は、このような従
来の技術的課題に鑑みてなされたものであり、その構成
は、金属製のライナー材１の外側に、樹脂被覆を施した
強化材１７ａ，１５ａ，１４ａを巻き付けて、繊維強化
プラスチック製の被覆層１７，１５，１４を形成した圧
力容器において、前記被覆層１７，１５，１４を、強化
材１７ａ，１５ａ，１４ａの種類を異ならせて２層以上
に形成し、外径側の被覆層１５（１４）を内径側の被覆
層１７（１５）よりも引張弾性率を大きく設定し、圧力
容器に所定の内圧Ｐが作用した際、各被覆層１７，１
５，１４の内径部に作用する周方向の引張応力σｔの大
きさをほぼ合致させることを特徴とする圧力容器であ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technical problems, and the structure thereof is reinforced by resin coating on the outside of the metal liner material 1. In a pressure container in which the covering layers 17, 15, 14 made of fiber reinforced plastic are formed by winding the covering materials 17a, 15a, 14a, if the covering layers 17, 15, 14 are different in type of reinforcing materials 17a, 15a, 14a. When the coating layer 15 (14) on the outer diameter side is set to have a tensile elastic modulus larger than that of the coating layer 17 (15) on the inner diameter side, a predetermined internal pressure P acts on the pressure vessel. , Each coating layer 17, 1
The pressure vessel is characterized in that the magnitudes of the tensile stress σt in the circumferential direction acting on the inner diameter portions of 5, 5 are substantially matched.
【０００５】[0005]
【作用】このような圧力容器によれば、例えばライナー
材１の外側に、３層の被覆層１７，１５，１４を形成す
る。しかして、内部に圧力流体例えば圧力空気を封入す
れば、ライナー材１に所定の内圧Ｐが作用して膨出変形
を生ずる。これにより、ライナー材１及びライナー材１
の上の第１被覆層１７、第２被覆層１５及び第３被覆層
１４に、周方向の引張応力σｔが作用する。この周方向
の引張応力σｔは、各被覆層１７，１５，１４におい
て、内径側の大きな周方向引張歪を生ずる箇所に引張弾
性率の小さなガラス繊維からなる強化材１７ａを配設
し、外径側に向けて次第に周方向引張歪が小さくなる箇
所に、引張弾性率が次第に大きくなるように例えばケブ
ラー繊維からなる強化材１５ａ及び炭素繊維からなる強
化材１４ａを配設することにより、引張応力σｔの厚さ
方向の勾配が、各被覆層１７，１５，１４にて不連続に
発生するようになる。According to such a pressure vessel, for example, three coating layers 17, 15 and 14 are formed on the outside of the liner material 1. Then, if a pressure fluid, for example, pressure air is enclosed inside, a predetermined internal pressure P acts on the liner material 1 to cause bulging deformation. Thereby, the liner material 1 and the liner material 1
The tensile stress σt in the circumferential direction acts on the first coating layer 17, the second coating layer 15, and the third coating layer 14 on the upper part of the core. This circumferential tensile stress σt is obtained by arranging a reinforcing material 17a made of glass fiber having a small tensile elastic modulus at a position in each of the coating layers 17, 15 and 14 where a large circumferential tensile strain occurs on the inner diameter side, and By arranging the reinforcing material 15a made of, for example, Kevlar fiber and the reinforcing material 14a made of carbon fiber in such a manner that the tensile elastic modulus is gradually increased, the tensile stress .sigma.t The gradient in the thickness direction of is generated discontinuously in each of the coating layers 17, 15, and 14.
【０００６】しかして、各被覆層１７，１５，１４にお
いて、極大歪を生ずる各内径部の極大応力σｔ2 がほぼ
等しくなるようにすれば、極小応力σｔ3 も近似してく
るので、引張応力σｔが各被覆層１７，１５，１４に分
散して負担される。従つて、被覆層１７，１５，１４全
体の最内径面に作用する最大応力にのみ依存して、圧力
容器が比較的低い内圧によつて破断応力（破断歪）に達
し、破断されることが解消する。炭素繊維は、耐亀裂性
に優れるが、厚肉になると破断し易くなるので、炭素繊
維を最外径層である第３被覆層１４の強化材１４ａとし
て使用することにより、第１被覆層１７及び第２被覆層
１５の保護を図ることと、炭素繊維を強化材１４ａとす
る第３被覆層１４の厚さを減少させて破断を防止するこ
ととが両立する。また、ケブラーは、軽いが耐光性に劣
るといわれているので、第２被覆層１５の強化材１５ａ
として使用し、第３被覆層１４によつて覆うことによ
り、軽量化と耐久性とが向上する。However, if the maximum stress σt 2 of each inner diameter portion that causes the maximum strain in each coating layer 17, 15, 14 is made substantially equal, the minimum stress σt 3 is also approximated, so that the tensile stress [sigma] t is distributed to each of the coating layers 17, 15 and 14 and is borne. Therefore, depending on only the maximum stress that acts on the innermost surface of the entire coating layers 17, 15, and 14, the pressure vessel may reach a breaking stress (breaking strain) due to a relatively low internal pressure and break. Resolve. Although carbon fibers have excellent crack resistance, they tend to break when they become thicker. Therefore, by using carbon fibers as the reinforcing material 14a of the third coating layer 14 which is the outermost diameter layer, the first coating layer 17 Also, the protection of the second coating layer 15 and the prevention of breakage by reducing the thickness of the third coating layer 14 having carbon fiber as the reinforcing material 14a are compatible with each other. Further, since Kevlar is said to be light but inferior in light resistance, the reinforcing material 15a of the second coating layer 15
And is covered with the third coating layer 14 to reduce the weight and improve the durability.
【０００７】[0007]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。図１〜図５は、本発明の１実施例に係る圧
力容器を示す。図中において符号１は金属製（アルミニ
ウム，スチール等）のライナー材を示し、ライナー材１
は、円筒状胴部１ａ及び円筒状胴部１ａの両端のドーム
部１ｂ，１ｃによつて内部空間１ｅを区画し、一方のド
ーム部１ｂには口ねじ部１ｄを有している。このライナ
ー材１の円筒状胴部１ｂには、樹脂被覆した３種類の異
なる強化材１４ａ，１５ａ，１７ａをフイラメントワイ
ンデイング法にて巻き付けて、３層の被覆層１４，１
５，１７を形成してある。Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a pressure vessel according to an embodiment of the present invention. In the figure, reference numeral 1 indicates a liner material made of metal (aluminum, steel, etc.).
Defines an internal space 1e by the cylindrical body portion 1a and the dome portions 1b and 1c at both ends of the cylindrical body portion 1a, and one dome portion 1b has a mouth screw portion 1d. Three different types of resin-coated reinforcing materials 14a, 15a, 17a are wound around the cylindrical body portion 1b of the liner material 1 by the filament winding method to form three coating layers 14, 1
5 and 17 are formed.
【０００８】すなわち、図３に示すようにライナー材１
をマンドレルとして、回転駆動可能にフイラメントワイ
ンデイング成形装置に取付け、ライナー材１に回転駆動
を与えながらライナー材１の円筒状胴部１ａの上にガラ
ス繊維からなる強化材１７ａをフープ巻きにて周方向に
巻き付けて図２に示す第１被覆層１７を形成する。図３
に示すように強化材１７ａは、案内ロール１８にて導い
て樹脂槽１９中の例えば熱可塑性の溶融樹脂に浸漬さ
せ、一対のロール２０を通過させてライナー材１の上に
所定の張力にて巻き付け、第１被覆層１７となす。強化
材１７ａに適度の張力を付与しながら巻き付けることに
より、押し付け力を充分に作用させた状態で強化材１７
ａが緊密に巻き付き、ライナー材１との間及び強化材１
７ａ相互間に空隙の存在しない第１被覆層１７を形成す
ることができる。That is, as shown in FIG. 3, the liner material 1
Is used as a mandrel to be rotatably driven in a filament winding molding device, and while the liner material 1 is rotationally driven, a reinforcing material 17a made of glass fiber is wound around the cylindrical body 1a of the liner material 1 by hoop winding. The first coating layer 17 shown in FIG. 2 is formed by winding in the direction. Figure 3
As shown in FIG. 2, the reinforcing material 17a is guided by the guide rolls 18 and dipped in, for example, a thermoplastic molten resin in the resin tank 19, passes through the pair of rolls 20 and is applied with a predetermined tension on the liner material 1. The first coating layer 17 is wrapped around. By winding the reinforcing material 17a while applying an appropriate tension, the reinforcing material 17a can be applied with sufficient pressing force.
a is tightly wrapped around, between the liner material 1 and the reinforcing material 1
It is possible to form the first coating layer 17 having no void between the 7a.
【０００９】第１被覆層１７が所定の厚さにて形成され
たなら、同様のフイラメントワインデイング成形装置を
使用し、第１被覆層１７の上にケブラー繊維（例えばケ
ブラー２９繊維）からなる強化材１５ａを同じくフープ
巻きにて周方向に巻き付けて図２に示す第２被覆層１５
を形成する。When the first coating layer 17 is formed to a predetermined thickness, a similar filament winding molding apparatus is used to reinforced the first coating layer 17 with Kevlar fibers (for example, Kevlar 29 fibers). The second coating layer 15 shown in FIG.
To form.
【００１０】更に、第２被覆層１５が所定の厚さにて形
成されたなら、同様のフイラメントワインデイング成形
装置を使用し、第２被覆層１５の上に炭素繊維からなる
強化材１４ａを同じくフープ巻きにて周方向に巻き付け
て図２に示す第３被覆層１４を形成する。このようにし
て、ライナー材１の円筒状胴部１ａがフープ巻きにて補
強され、ドーム部１ｂ，１ｃの強度がライナー材１のみ
によつて与えられるフープラップ型の圧力容器が得られ
る。Further, if the second coating layer 15 is formed to have a predetermined thickness, the same filament winding molding apparatus is used, and the reinforcing material 14a made of carbon fiber is also formed on the second coating layer 15. The third coating layer 14 shown in FIG. 2 is formed by winding in the circumferential direction by hoop winding. Thus, the hoop-wrap type pressure vessel in which the cylindrical body portion 1a of the liner material 1 is reinforced by hoop winding and the strength of the dome portions 1b and 1c is given only by the liner material 1 is obtained.
【００１１】このような３層の被覆層１７，１５，１４
は、それぞれの強化材１７ａ，１５ａ，１４ａの種類を
異ならせ、引張弾性率（Ｋｇ／ｍｍ2 ）が内径側から次
第に大きくなつている。具体的には、第１被覆層１７の
強化材１７ａであるガラス繊維の引張弾性率は４７００
Ｋｇ／ｍｍ2 程度であり、第２被覆層１５の強化材１５
ａであるケブラー繊維の引張弾性率は６５００Ｋｇ／ｍ
ｍ2 程度であり、また、第３被覆層１４の強化材１４ａ
である炭素繊維の引張弾性率は７７００Ｋｇ／ｍｍ2 程
度である。なお、各強化材１７ａ，１５ａ，１４ａの引
張強さは、いずれも１４０Ｋｇ／ｍｍ2 程度で、ほぼ同
一である。[0011] Such three-layer coating layers 17, 15, 14
Has different tensile reinforcements 17a, 15a, 14a, and the tensile elastic modulus (Kg / mm 2 ) is gradually increased from the inner diameter side. Specifically, the tensile elastic modulus of the glass fiber that is the reinforcing material 17a of the first coating layer 17 is 4700.
Kg / mm 2 and strength of the second coating layer 15
The tensile elastic modulus of the Kevlar fiber which is a is 6500 Kg / m
m 2 and the reinforcing material 14a of the third coating layer 14
The tensile modulus of elasticity of the carbon fiber is about 7700 Kg / mm 2 . The tensile strength of each reinforcing material 17a, 15a, 14a is about 140 Kg / mm 2 and is almost the same.
【００１２】次に、上記実施例の作用について説明す
る。このような圧力容器の内部空間１ｅに圧力流体例え
ば圧力空気を封入すれば、ライナー材１に所定の内圧Ｐ
が作用して膨出変形を生ずる。ライナー材１は、圧力流
体の漏洩を防止する機能を有する。これにより、ライナ
ー材１及びライナー材１の上の第１被覆層１７、第２被
覆層１５及び第３被覆層１４に、ライナー材１の中心軸
線方向よりも大きな周方向の引張応力σｔが作用する。
この周方向の引張応力σｔは、引張応力＝周方向引張歪
×引張弾性率にて得られる。そして、被覆層１７，１
５，１４の全体において、内径側の大きな周方向引張歪
を生ずる箇所に引張弾性率の小さなガラス繊維からなる
強化材１７ａを配設し、外径側に向けて次第に周方向引
張歪が小さくなる箇所に、引張弾性率が次第に大きくな
るようにケブラー繊維からなる強化材１５ａ及び炭素繊
維からなる強化材１４ａをそれぞれ配設したことによ
り、引張応力σｔの厚さ方向の勾配が、各被覆層１７，
１５，１４にて不連続に発生する。しかも引張応力σｔ
の極大値は、各被覆層１７，１５，１４の内径部におい
て発生し、図４に示すように引張応力σｔがのこ刃状に
得られる。Next, the operation of the above embodiment will be described. If a pressure fluid, such as pressure air, is enclosed in the internal space 1e of such a pressure container, the liner material 1 will have a predetermined internal pressure P.
Causes bulging deformation. The liner material 1 has a function of preventing leakage of the pressure fluid. Thereby, the tensile stress σt in the circumferential direction, which is larger than the central axis direction of the liner material 1, acts on the liner material 1 and the first coating layer 17, the second coating layer 15, and the third coating layer 14 on the liner material 1. To do.
The tensile stress σt in the circumferential direction is obtained by: tensile stress = tensile strain in circumferential direction × tensile elastic modulus. And the covering layers 17 and 1
In the whole of Nos. 5 and 14, a reinforcing material 17a made of glass fiber having a small tensile elastic modulus is arranged at a position where a large circumferential tensile strain occurs on the inner diameter side, and the circumferential tensile strain gradually decreases toward the outer diameter side. By arranging the reinforcing material 15a made of Kevlar fiber and the reinforcing material 14a made of carbon fiber so that the tensile elastic modulus is gradually increased, the gradient of the tensile stress σt in the thickness direction is set to each coating layer 17. ，
Discontinuity occurs at 15 and 14. Moreover, the tensile stress σt
The maximum value of occurs in the inner diameter portions of the coating layers 17, 15 and 14, and the tensile stress σt is obtained in the shape of a saw blade as shown in FIG.
【００１３】しかして、極大歪を生ずる各被覆層１７，
１５，１４の内径面に生ずる極大応力σｔ2 及び各被覆
層１７，１５，１４の外径面に生ずる極小応力σｔ3 が
ほぼ等しく、かつ、極大応力σｔ2 と極小応力σｔ3 と
の差が所定の範囲に存在するように、各被覆層１７，１
５，１４の厚さ及び強化材１７ａ，１５ａ，１４ａの種
類を調節することにより、引張応力σｔが各被覆層１
７，１５，１４に分散してかつほぼ均一に負担される。
従つて、被覆層１７，１５，１４全体の内径面に作用す
る最大応力にのみ依存して、圧力容器が破断応力（破断
歪）に達し、破断されることが解消する。更に、炭素繊
維は、亀裂に対して強いが、厚さが増大すると歪が小さ
い場合であつても破断し易くなるので、炭素繊維を最外
径層である第３被覆層１４の強化材１４ａとして使用す
ることにより、第１被覆層１７及び第２被覆層１５の保
護を図ることと、炭素繊維を強化材１４ａとする第３被
覆層１４の厚さを減少させて破断を防止することとを両
立できる。また、ケブラーは、軽いが光による変質を受
け易いといわれているので、第２被覆層１５の強化材１
５ａとして使用し、第３被覆層１４によつて覆うことは
軽量化及び耐久性を確保する上で好ましい。Therefore, each coating layer 17 which causes the maximum strain,
The maximum stress σt 2 generated on the inner diameter surface of 15, 14 and the minimum stress σt 3 generated on the outer diameter surface of each of the coating layers 17, 15, 14 are substantially equal, and the difference between the maximum stress σt 2 and the minimum stress σt 3 is Each of the coating layers 17 and 1 so as to exist in a predetermined range.
The tensile stress σt can be adjusted by adjusting the thicknesses of the layers 5, 14 and the types of the reinforcing materials 17a, 15a, 14a.
It is distributed to 7, 15, and 14 and is evenly distributed.
Therefore, it is possible to prevent the pressure vessel from reaching the breaking stress (breaking strain) and breaking, depending only on the maximum stress acting on the inner diameter surface of the entire coating layers 17, 15, 14. Further, although the carbon fiber is strong against cracks, if the thickness increases, the carbon fiber easily breaks even if the strain is small. Therefore, the carbon fiber is reinforced with the reinforcing material 14a of the third coating layer 14 which is the outermost diameter layer. To protect the first coating layer 17 and the second coating layer 15 and reduce the thickness of the third coating layer 14 having carbon fiber as the reinforcing material 14a to prevent breakage. Can achieve both. Also, since Kevlar is said to be light, but is susceptible to alteration by light, the reinforcing material 1 for the second coating layer 15
It is preferable to use as 5a and cover with the third coating layer 14 in order to reduce the weight and ensure the durability.
【００１４】図５には他の構造例を示す。上記の実施例
にあつては、各被覆層１７，１５，１４をフープ巻きの
みにて形成したが、この構造例にあつては、ライナー材
１の中心軸線方向を補強するヘリカル又はポーラ巻きと
周方向を補強するフープ巻きとを施し、ライナー材１の
全体にＦＲＰを巻き付けてある。その際、最内層となる
第１被覆層１７をヘリカル又はポーラ巻きにて形成し、
最外層となる第３被覆層１４をフープ巻きにて形成し、
中間層となる第２被覆層１５は、任意の巻き方にて形成
する。これにより、ライナー材１の中心軸線方向を補強
するヘリカル巻き又はポーラ巻きと、周方向を補強する
フープ巻きとを有し、ライナー材１の全体にＦＲＰを巻
付けたフルラップ型の圧力容器が得られる。この構造例
によつても、被覆層１７，１５，１４が３層をなすライ
ナー材１の円筒状胴部１ａに関し、前記実施例とほぼ同
様の作用を得ることができる。FIG. 5 shows another structural example. In the above embodiment, the coating layers 17, 15 and 14 were formed only by hoop winding, but in this structural example, a helical or polar winding for reinforcing the central axis direction of the liner material 1 is used. A hoop winding for reinforcing the circumferential direction is applied, and the FRP is wound around the entire liner material 1. At that time, the first coating layer 17, which is the innermost layer, is formed by helical or polar winding,
The third coating layer 14 as the outermost layer is formed by hoop winding,
The second coating layer 15 serving as the intermediate layer is formed by any winding method. As a result, a full-wrap type pressure vessel having a helical or polar winding that reinforces the central axis direction of the liner material 1 and a hoop winding that reinforces the circumferential direction and having the FRP wound around the entire liner material 1 is obtained. To be According to this structural example as well, with respect to the cylindrical body portion 1a of the liner material 1 in which the coating layers 17, 15, and 14 are three layers, it is possible to obtain substantially the same operation as that of the above-described embodiment.
【００１５】また、上記の実施例にあつては、各被覆層
１７，１５，１４の強化材１７ａ，１５ａ，１４ａをそ
れぞれガラス繊維、ケブラー繊維又は炭素繊維の単体と
したが、これらの強化材１７ａ，１５ａ，１４ａを複合
材とし、混合率を変更することにより、各被覆層１７，
１５，１４の内径部に作用する周方向の極大応力σｔ2
をそれぞれほぼ合致させることも可能である。また、被
覆層１７，１５，１４を２層以上とすれば、ほぼ同様の
作用を得ることができる。勿論、強化材１７ａ，１５
ａ，１４ａとしては、各種の無機繊維や有機繊維を使用
することが可能である。In the above embodiment, the reinforcing materials 17a, 15a and 14a of the coating layers 17, 15 and 14 are made of glass fiber, Kevlar fiber or carbon fiber, respectively. By using 17a, 15a, and 14a as a composite material and changing the mixing ratio, each coating layer 17,
Maximum circumferential stress σt 2 acting on the inner diameters of 15 and 14
It is also possible to match each of the above. Moreover, if the coating layers 17, 15, and 14 are formed of two or more layers, substantially the same operation can be obtained. Of course, the reinforcing materials 17a, 15
Various inorganic fibers and organic fibers can be used as a and 14a.
【００１６】[0016]
【発明の効果】以上の説明によつて理解されるように、
本発明に係る圧力容器によれば、ＦＲＰ製の被覆層の内
径側から外径側に向けて引張弾性率が大きくなるように
したので、周方向の引張応力の勾配が従来例に比してほ
ぼ平坦となり、一様分布応力化する。その結果、単一の
ＦＲＰ製の被覆層からなる圧力容器と比較して、ＦＲＰ
製の各被覆層の強度が有効活用されることとなり、高耐
圧力が得られると共に、単位重量当たりの耐圧力が向上
するので、安価かつ軽量化が確保される。As can be understood from the above description,
According to the pressure vessel of the present invention, the tensile elastic modulus is increased from the inner diameter side to the outer diameter side of the FRP coating layer, so that the tensile stress gradient in the circumferential direction is larger than that in the conventional example. Almost flat and uniform stress distribution. As a result, compared to a pressure vessel composed of a single FRP coating layer, FRP
Since the strength of each manufactured coating layer is effectively utilized, a high pressure resistance is obtained, and the pressure resistance per unit weight is improved, so that inexpensive and lightweight can be secured.
【図１】 本発明の１実施例に係る圧力容器を示す半部
断面図。FIG. 1 is a half sectional view showing a pressure vessel according to an embodiment of the present invention.
【図２】 同じく要部を示す断面図。FIG. 2 is a sectional view showing a main part of the same.
【図３】 同じくフイラメントワインデイング成形装置
を示す図。FIG. 3 is a view showing a filament winding molding apparatus.
【図４】 同じく作用説明図。FIG. 4 is a similar operation explanatory diagram.
【図５】 他の構造例に係る圧力容器を示す半部断面
図。FIG. 5 is a half sectional view showing a pressure vessel according to another structural example.
【図６】 従来例の作用説明図。FIG. 6 is an operation explanatory view of a conventional example.
１：ライナー材、１ａ：円筒状胴部、１ｂ，１ｃ：ドー
ム部、１ｅ：内部空間、１４：第３被覆層、１４ａ：強
化材、１５：第２被覆層、１５ａ：強化材、１７：第１
被覆層、１７ａ：強化材、１８：案内ロール、１９：樹
脂槽、２０：ロール、Ｐ：内圧。1: Liner material, 1a: Cylindrical body part, 1b, 1c: Dome part, 1e: Internal space, 14: Third coating layer, 14a: Reinforcing material, 15: Second coating layer, 15a: Reinforcing material, 17: First
Coating layer, 17a: reinforcing material, 18: guide roll, 19: resin tank, 20: roll, P: internal pressure.
Claims (1)
を施した強化材を巻き付けて、繊維強化プラスチック製
の被覆層を形成した圧力容器において、前記被覆層を、
強化材の種類を異ならせて２層以上に形成し、外径側の
被覆層を内径側の被覆層よりも引張弾性率を大きく設定
し、所定の内圧が作用した際、各被覆層の内径部に作用
する周方向の引張応力の大きさをほぼ合致させることを
特徴とする圧力容器。1. A pressure vessel in which a reinforcing material coated with a resin is wound around the outside of a metal liner material to form a coating layer made of fiber reinforced plastic, and the coating layer is
The reinforcing material is made up of two or more layers with different types, the outer diameter side coating layer has a larger tensile elastic modulus than the inner diameter side coating layer, and the inner diameter of each coating layer when a predetermined internal pressure is applied. A pressure vessel characterized in that the magnitudes of the tensile stresses in the circumferential direction that act on the parts are substantially matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13918993A JPH06331032A (en) | 1993-05-19 | 1993-05-19 | Pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13918993A JPH06331032A (en) | 1993-05-19 | 1993-05-19 | Pressure vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06331032A true JPH06331032A (en) | 1994-11-29 |
Family
ID=15239633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13918993A Pending JPH06331032A (en) | 1993-05-19 | 1993-05-19 | Pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06331032A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952611A1 (en) * | 1999-11-02 | 2001-05-23 | Eberhard Haack | High pressure container for the food industry comprises a metal inner layer with fiber reinforced layers of progressively increasing modulus wound around the outside |
| JP2002168396A (en) * | 2000-12-01 | 2002-06-14 | Univ Nihon | Pressure vessel |
| WO2004051138A1 (en) * | 2002-12-02 | 2004-06-17 | Mitsubishi Rayon Co., Ltd. | Pressure container and method of manufacturing the pressure container |
| JP2006160314A (en) * | 2004-12-07 | 2006-06-22 | Kao Corp | Composite container |
| JP2008045660A (en) * | 2006-08-15 | 2008-02-28 | Toyota Motor Corp | High pressure tank |
| WO2009119421A1 (en) * | 2008-03-28 | 2009-10-01 | 独立行政法人海洋研究開発機構 | Pressure container, and buoyant body and exploring device which are provided with the same |
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| JP2010270878A (en) * | 2009-05-25 | 2010-12-02 | Nissan Motor Co Ltd | Pressure vessel structure |
| US8012584B2 (en) | 2003-08-28 | 2011-09-06 | Mitsubishi Rayon Co., Ltd. | High-performance pressure vessel and carbon fiber for pressure vessel |
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| JPWO2013081019A1 (en) * | 2011-11-30 | 2015-04-27 | エドワーズ株式会社 | Vacuum pump |
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-
1993
- 1993-05-19 JP JP13918993A patent/JPH06331032A/en active Pending
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|---|---|---|---|---|
| DE19952611A1 (en) * | 1999-11-02 | 2001-05-23 | Eberhard Haack | High pressure container for the food industry comprises a metal inner layer with fiber reinforced layers of progressively increasing modulus wound around the outside |
| JP2002168396A (en) * | 2000-12-01 | 2002-06-14 | Univ Nihon | Pressure vessel |
| JP4639085B2 (en) * | 2002-12-02 | 2011-02-23 | 三菱レイヨン株式会社 | Pressure vessel and method for manufacturing the same |
| JPWO2004051138A1 (en) * | 2002-12-02 | 2006-04-06 | 三菱レイヨン株式会社 | Pressure vessel and method for manufacturing the same |
| WO2004051138A1 (en) * | 2002-12-02 | 2004-06-17 | Mitsubishi Rayon Co., Ltd. | Pressure container and method of manufacturing the pressure container |
| US8012584B2 (en) | 2003-08-28 | 2011-09-06 | Mitsubishi Rayon Co., Ltd. | High-performance pressure vessel and carbon fiber for pressure vessel |
| JP2006160314A (en) * | 2004-12-07 | 2006-06-22 | Kao Corp | Composite container |
| JP2009536297A (en) * | 2006-05-10 | 2009-10-08 | シュンク・コーレンストッフテヒニーク・ゲーエムベーハー | Pressure-resistant body capable of fluid loading |
| JP2008045660A (en) * | 2006-08-15 | 2008-02-28 | Toyota Motor Corp | High pressure tank |
| DE102008009723B4 (en) * | 2007-02-22 | 2019-03-14 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | pressure vessel |
| WO2009119421A1 (en) * | 2008-03-28 | 2009-10-01 | 独立行政法人海洋研究開発機構 | Pressure container, and buoyant body and exploring device which are provided with the same |
| JP5059938B2 (en) * | 2008-03-28 | 2012-10-31 | 独立行政法人海洋研究開発機構 | Pressure vessel, buoyant body and exploration device provided with the same |
| JP2010270878A (en) * | 2009-05-25 | 2010-12-02 | Nissan Motor Co Ltd | Pressure vessel structure |
| JPWO2013081019A1 (en) * | 2011-11-30 | 2015-04-27 | エドワーズ株式会社 | Vacuum pump |
| CN103112181A (en) * | 2013-02-28 | 2013-05-22 | 浙江凯博压力容器有限公司 | Glass fiber all-winding aluminum liner composite cylinder and manufacturing process thereof |
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| JP2016165211A (en) * | 2015-02-27 | 2016-09-08 | 株式会社東芝 | Gas-insulation closing mechanism and manufacturing method of the same |
| JP2017155836A (en) * | 2016-03-01 | 2017-09-07 | 株式会社日本製鋼所 | Pressure container and hoop wrap composite pressure container |
| WO2017150520A1 (en) * | 2016-03-01 | 2017-09-08 | 株式会社日本製鋼所 | Pressure container and hoop-wrap composite pressure container |
| CN108713122A (en) * | 2016-03-01 | 2018-10-26 | 株式会社日本制钢所 | Pressure vessel and shroud ring recombination pressure container |
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| CN112325151A (en) * | 2020-11-19 | 2021-02-05 | 沈阳欧施盾新材料科技有限公司 | Method for manufacturing copper alloy seamless gas cylinder |
| CN113719745A (en) * | 2021-09-18 | 2021-11-30 | 深圳烯湾科技有限公司 | Gas storage cylinder |
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