JP4183473B2 - Pressure vessel - Google Patents

Pressure vessel Download PDF

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Publication number
JP4183473B2
JP4183473B2 JP2002298824A JP2002298824A JP4183473B2 JP 4183473 B2 JP4183473 B2 JP 4183473B2 JP 2002298824 A JP2002298824 A JP 2002298824A JP 2002298824 A JP2002298824 A JP 2002298824A JP 4183473 B2 JP4183473 B2 JP 4183473B2
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Japan
Prior art keywords
support structure
pressure vessel
motor case
winding method
filament winding
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JP2002298824A
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JP2004132299A (en
Inventor
喜之 紅谷
貞行 福島
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IHI Aerospace Co Ltd
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IHI Aerospace Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
    • B29C66/53245—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7154—Barrels, drums, tuns, vats
    • B29L2031/7156—Pressure vessels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Moulding By Coating Moulds (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Description

【０００１】
【発明が属する技術分野】
本発明は、フィラメントワインディング法により成形される圧力容器に係わり、例えば、ロケットの段間部の支持構造体に支持されるモータケースとして用いられる圧力容器に関するものである。
【０００２】
【従来の技術】
従来、上記したフィラメントワインディング法により成形される圧力容器、例えば、推進薬のケース及び燃焼室として機能するロケットのモータケースは、ロケットの段間部において、前後段の構造体とのインタフェースとなる環状をなす支持構造体と結合して支持される。
【０００３】
図３に示すように、この支持構造体５２は、モータケース５１の外周に沿って嵌合され、機軸方向（矢印Ｘ方向）の荷重を伝達するために、モータケース５１と支持構造体５２との間に設けた接着剤５３により固定されている、あるいは、接着剤５３を用いずに熱硬化させることにより固着されている。
【０００４】
【発明が解決しようとする課題】
ところが、上記した従来のモータケース（圧力容器）５１では、推進薬の燃焼によって内部圧力が上昇して膨張した場合、支持構造体５２がモータケース５１の外周に沿って結合してある都合上、支持構造体５２との結合部分における径方向の膨らみを抑えることはできるものの、機軸方向の伸びを十分に抑えることができるとは言い難く、その結果、保証圧力以下の内部圧力であったとしても、モータケース５１の機軸方向の伸びによって支持構造体５２との間に剥離が生じてしまう恐れがないとは言えないという問題があり、この問題を解決することが従来の課題となっていた。
【０００５】
【発明の目的】
本発明は、上記した従来の課題に着目してなされたもので、外周に沿って結合する支持構造体に支持される場合において、この支持構造体との間に剥離が生じる懸念を払拭することが可能である圧力容器を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明の請求項１の圧力容器は、フィラメントワインディング法により成形された圧力容器であって、この圧力容器の外周に沿って結合する環状をなす支持構造体に支持される圧力容器において、支持構造体との結合部分には、繊維剛性の高い炭素繊維から成り且つ繊維方向を機軸方向に沿わせた強化層を、フィラメントワインディング法により当該圧力容器を成形する段階で織り込んで円周方向にわたって積層した構成としており、この圧力容器の構成を従来の課題を解決するための手段としている。
【０００７】
【発明の作用】
本発明の圧力容器において、内部圧力が上昇して膨張した場合、支持構造体との結合部分における径方向の膨らみは、外周に沿って結合した支持構造体によって抑えられ、一方、機軸方向の伸びは、支持構造体との結合部分に円周方向にわたって積層した強化層、すなわち、炭素繊維から成り且つ繊維方向を機軸方向に沿わせることで容器軸方向の伸びを抑制する強化層により抑えられることから、内部圧力が保証圧力以上となったとしても支持構造体との間に剥離現象が生じることが回避されることとなる。
【０００８】
また、本発明の圧力容器では、この圧力容器をフィラメントワインディング法により成形するのと同時に、支持構造体との結合部分に強化層を積層させ得るので、強化層を積層する工程を別個に設ける必要がない分だけ、作業コストの低減が図られることとなる。
【０００９】
【発明の効果】
本発明の圧力容器によれば、上記した構成としているので、内部圧力が保証圧力以下である場合は勿論のこと、例え、内部圧力が保証圧力以上となった場合であったとしても、支持構造体との間に剥離が生じる懸念を払拭することが可能であるという非常に優れた効果がもたらされる。
【００１０】
また、本発明の圧力容器では、上記した構成としたため、作業コストの低減をも実現することが可能であるという非常に優れた効果がもたらされる。
【００１１】
【実施例】
以下、本発明を図面に基づいて説明する。
【００１２】
図１は本発明の圧力容器の一実施例を示しており、この実施例では、本発明の圧力容器がロケットのモータケースである場合を示し、このモータケースを支持する支持構造体がロケットの段間部である場合を示す。
【００１３】
図１及び図２に示すように、推進薬のケース及び燃焼室として機能するモータケース１は、フィラメントワインディング法により成形された炭素繊維強化プラスチック製の圧力容器であって、円筒形状の胴体１１と、この胴体１１の頭部側（図示左側）に位置するドーム状鏡板１２と、胴体１１の尾部側（図示右側）に位置するドーム状鏡板１３と、この尾部側のドーム状鏡板１３の機軸上で開口するノズル１４を備えている。
【００１４】
このモータケース１を支持する支持構造体は、ロケットの上段部とのインタフェースとなる頭部側支持構造体２Ａと、モータケース１のノズル１４を被覆しかつロケットの下段部とのインタフェースとなる尾部側支持構造体２Ｂであり、これらの頭部側支持構造体２Ａ及び尾部側支持構造体２Ｂはいずれも環状をなしていて、例えば、ハンドレイアップ法等で積層成形された炭素繊維強化プラスチック製のものとしてある。
【００１５】
頭部側支持構造体２Ａは、モータケース１の胴体１１において、頭部側ドーム状鏡板１２の近傍の外周に沿って嵌合され、一方、尾部側支持構造体２Ｂは、モータケース１の胴体１１において、尾部側ドーム状鏡板１３の近傍の外周に沿って嵌合され、いずれも機軸方向（矢印Ｘ方向）の荷重を伝達するために、モータケース１と支持構造体２Ａ，２Ｂとの間に円周方向にわたってそれぞれ設けたフィルム接着剤３、例えば、エポキシ系のフィルム接着剤３により固定してある。
【００１６】
この場合、モータケース１の胴体１１における支持構造体２Ａ，２Ｂとの各結合部分４Ａ，４Ｂには、機軸方向（容器軸方向）の伸びを抑制する強化層１５が円周方向にわたってそれぞれ積層してある。これらの強化層１５，１５は、いずれも繊維剛性の高い炭素繊維（例えば、Ｔ８００，ＩＭ６００，ＨＴＡ）から成り、モータケース１をフィラメントワインディング法により成形する段階で繊維方向を機軸容器軸方向に沿わせて織り込んで形成してある。
【００１７】
このモータケース１において、内部に収容した推進薬の燃焼によって内部圧力が上昇して膨張した場合、頭部側支持構造体２Ａ及び尾部側支持構造体２Ｂとの各結合部分４Ａ，４Ｂにおける径方向の膨らみは、いずれもモータケース１の胴体１１の外周に沿って結合した上記支持構造体２Ａ，２Ｂによって抑えられることとなる。
【００１８】
一方、頭部側支持構造体２Ａ及び尾部側支持構造体２Ｂとの各結合部分４Ａ，４Ｂにおける機軸方向の伸びは、いずれもモータケース１の支持構造体２Ａ，２Ｂとの結合部分に円周方向にわたって積層した機軸方向の伸びを抑制する強化層１５により抑えられることから、モータケース１の内部圧力が保証圧力以上となったとしても、支持構造体２Ａ，２Ｂとの間に剥離現象が生じることが回避されることとなる。
【００１９】
また、この実施例におけるモータケース１において、このモータケース１をフィラメントワインディング法により成形するのと同時に、支持構造体２Ａ，２Ｂとの各結合部分４Ａ，４Ｂに強化層１５，１５を積層させることができるので、これらの強化層１５，１５を積層する工程を別個に設ける必要がない分だけ、作業コストの低減が図られることとなる。
【００２０】
なお、上記した実施例では、圧力容器がロケットのモータケースであり、このモータケースを支持する支持構造体がロケットの段間部である場合を示したが、これに限定されるものではない。
【００２１】
また、上記した実施例では、モータケース１及び支持構造体２Ａ，２Ｂをいずれも炭素繊維強化プラスチック製のものとした場合を示したが、これに限定されるものではなく、他の材質の圧力容器及び支持構造体にも適用することが可能であり、圧力容器及び支持構造体の固定に使用する接着剤もエポキシ系のものに限定されるものではなく、圧力容器及び支持構造体の材質に応じて適宜選択して使用することができる。
【００２２】
さらに、本発明の圧力容器の詳細な構成は、上記した実施例に限定されるものではない。
【図面の簡単な説明】
【図１】本発明の圧力容器の一実施例を示すモータケースと頭部側支持構造体との結合部分における拡大断面説明図である。
【図２】図１におけるモータケースと支持構造体との結合状態を示す半割断面説明図である。
【図３】従来の圧力容器を示す支持構造体との結合部分における拡大断面説明図である。
【符号の説明】
１ モータケース（圧力容器）
２Ａ 頭部側支持構造体
２Ｂ 尾部側支持構造体
４Ａ，４Ｂ 結合部分
１５ 強化層[0001]
[Technical field to which the invention belongs]
The present invention relates to a pressure vessel formed by a filament winding method, and, for example, relates to a pressure vessel used as a motor case supported by a support structure at an interstage portion of a rocket.
[0002]
[Prior art]
Conventionally, a pressure vessel formed by the filament winding method described above, for example, a propellant case and a rocket motor case functioning as a combustion chamber, has an annular shape that serves as an interface with the front and rear structures at the interstage portion of the rocket. It is supported in combination with the support structure forming
[0003]
As shown in FIG. 3, the support structure 52 is fitted along the outer periphery of the motor case 51, and transmits the load in the axis direction (arrow X direction). It is fixed by an adhesive 53 provided between them, or is fixed by thermosetting without using the adhesive 53.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional motor case (pressure vessel) 51, when the internal pressure rises due to combustion of the propellant and expands, the support structure 52 is coupled along the outer periphery of the motor case 51. Although it is possible to suppress bulge in the radial direction at the joint portion with the support structure 52, it is difficult to say that the expansion in the axial direction can be sufficiently suppressed. As a result, even if the internal pressure is below the guaranteed pressure, There is a problem that it cannot be said that there is no risk of peeling between the motor case 51 and the support structure 52 due to the elongation in the machine axis direction, and it has been a conventional problem to solve this problem.
[0005]
OBJECT OF THE INVENTION
The present invention has been made paying attention to the above-described conventional problems, and in the case of being supported by a support structure that is coupled along the outer periphery, to eliminate the concern that separation may occur between the support structure and the support structure. It is an object to provide a pressure vessel that is possible.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a pressure vessel formed by a filament winding method, wherein the pressure vessel is supported by an annular support structure coupled along the outer periphery of the pressure vessel. the union of the body, the reinforcing layer a and the fiber direction consist high carbon fiber of the fiber stiffness along a axis direction were laminated over a circular circumferential incorporate at the stage of forming the pressure vessel by a filament winding method The configuration of the pressure vessel is used as a means for solving the conventional problems.
[0007]
[Effects of the Invention]
In the pressure vessel of the present invention, when the internal pressure rises and expands, the radial bulge at the joint portion with the support structure is suppressed by the support structure coupled along the outer periphery, while the axial direction stretch. Can be suppressed by a reinforcing layer that is laminated in the circumferential direction at the joint portion with the support structure, that is, a reinforcing layer that is made of carbon fiber and that suppresses elongation in the container axial direction by keeping the fiber direction along the axis direction. Therefore, even if the internal pressure becomes equal to or higher than the guaranteed pressure, the occurrence of a peeling phenomenon with respect to the support structure is avoided.
[0008]
Further, in the pressure vessel of the present invention, a reinforcing layer can be laminated at the joint portion with the support structure at the same time that the pressure vessel is molded by the filament winding method, so that it is necessary to provide a step of laminating the reinforcing layer separately. As a result, there is a reduction in work cost.
[0009]
【The invention's effect】
According to the pressure vessel of the present invention, since it is configured as described above, the support structure is not limited to the case where the internal pressure is equal to or lower than the guaranteed pressure, for example, even if the internal pressure is equal to or higher than the guaranteed pressure. A very good effect is obtained that it is possible to dispel the concern of peeling between the body and the body.
[0010]
In addition, since the pressure vessel of the present invention has the above-described configuration, a very excellent effect is achieved that it is possible to realize a reduction in work cost.
[0011]
【Example】
Hereinafter, the present invention will be described with reference to the drawings.
[0012]
FIG. 1 shows an embodiment of the pressure vessel of the present invention. In this embodiment, the pressure vessel of the present invention is a rocket motor case, and the support structure for supporting the motor case is a rocket. The case of an interstage part is shown.
[0013]
As shown in FIGS. 1 and 2, a motor case 1 functioning as a propellant case and a combustion chamber is a pressure vessel made of carbon fiber reinforced plastic formed by a filament winding method, and includes a cylindrical body 11 and On the axis of the dome-shaped end plate 12 located on the head side (left side in the figure) of the fuselage 11, the dome-like end plate 13 located on the tail side (right side in the figure) of the fuselage 11, and the dome-like end plate 13 on the tail side The nozzle 14 is opened.
[0014]
The support structure that supports the motor case 1 includes a head-side support structure 2A that serves as an interface with the upper stage of the rocket, and a tail that covers the nozzle 14 of the motor case 1 and serves as an interface with the lower stage of the rocket. This is a side support structure 2B, and both the head side support structure 2A and the tail side support structure 2B are annular, and are made of, for example, a carbon fiber reinforced plastic layered and formed by a hand layup method or the like. As a thing.
[0015]
The head-side support structure 2A is fitted along the outer periphery of the body 11 of the motor case 1 in the vicinity of the head-side dome-shaped end plate 12, while the tail-side support structure 2B is the body of the motor case 1. 11 between the motor case 1 and the support structures 2A and 2B in order to be fitted along the outer periphery in the vicinity of the tail side dome-shaped end plate 13 and to transmit loads in the direction of the axis (arrow X direction). Are fixed by a film adhesive 3 provided in the circumferential direction, for example, an epoxy film adhesive 3.
[0016]
In this case, a reinforcing layer 15 that suppresses elongation in the machine direction (container axis direction) is laminated in the circumferential direction on the coupling portions 4A and 4B of the body 11 of the motor case 1 with the support structures 2A and 2B. It is. These reinforcing layers 15 and 15 are each made of carbon fiber having high fiber rigidity (for example, T800, IM600, HTA), and the fiber direction is aligned with the axis direction of the axle container at the stage of forming the motor case 1 by the filament winding method. They are woven together.
[0017]
In this motor case 1, when the internal pressure rises due to combustion of the propellant accommodated therein and expands, the radial direction in each of the coupling portions 4A and 4B between the head side support structure 2A and the tail side support structure 2B These bulges are all suppressed by the support structures 2A and 2B coupled along the outer periphery of the body 11 of the motor case 1.
[0018]
On the other hand, the extension in the direction of the axis of each coupling portion 4A, 4B between the head-side support structure 2A and the tail-side support structure 2B is the circumference of the coupling portion between the motor case 1 and the support structures 2A, 2B. Since it is suppressed by the reinforcing layer 15 that suppresses the elongation in the axis direction that is laminated over the direction, even if the internal pressure of the motor case 1 exceeds the guaranteed pressure, a peeling phenomenon occurs between the support structures 2A and 2B. Will be avoided.
[0019]
Further, in the motor case 1 in this embodiment, at the same time that the motor case 1 is formed by the filament winding method, the reinforcing layers 15 and 15 are laminated on the joint portions 4A and 4B with the support structures 2A and 2B. Therefore, the work cost can be reduced by the amount that it is not necessary to separately provide the step of laminating these reinforcing layers 15 and 15.
[0020]
In the above-described embodiment, the case where the pressure vessel is a rocket motor case and the support structure supporting the motor case is an interstage portion of the rocket is shown, but the present invention is not limited to this.
[0021]
In the above-described embodiment, the motor case 1 and the support structures 2A and 2B are both made of carbon fiber reinforced plastic. However, the present invention is not limited to this, and pressures of other materials are used. It can also be applied to the container and the support structure, and the adhesive used for fixing the pressure container and the support structure is not limited to the epoxy type, and the material of the pressure container and the support structure is not limited. It can be appropriately selected and used accordingly.
[0022]
Furthermore, the detailed configuration of the pressure vessel of the present invention is not limited to the above-described embodiment.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional explanatory view of a connecting portion between a motor case and a head-side support structure showing an embodiment of a pressure vessel according to the present invention.
FIG. 2 is a half cross-sectional explanatory view showing a coupling state between the motor case and the support structure in FIG. 1;
FIG. 3 is an enlarged cross-sectional explanatory view of a joint portion with a support structure showing a conventional pressure vessel.
[Explanation of symbols]
1 Motor case (pressure vessel)
2A Head side support structure 2B Tail side support structure 4A, 4B Coupling part 15 Strengthening layer

Claims (1)

フィラメントワインディング法により成形された圧力容器であって、この圧力容器の外周に沿って結合する環状をなす支持構造体に支持される圧力容器において、支持構造体との結合部分には、繊維剛性の高い炭素繊維から成り且つ繊維方向を機軸方向に沿わせた強化層を、フィラメントワインディング法により当該圧力容器を成形する段階で織り込んで円周方向にわたって積層したことを特徴とする圧力容器。In a pressure vessel formed by a filament winding method and supported by an annular support structure that is bonded along the outer periphery of the pressure vessel, a joint portion with the support structure has a fiber rigid portion. the reinforcing layer along a axis direction and the fiber direction consist high carbon fiber, the pressure vessel is characterized in that laminated over the circular circumferential incorporate at the stage of forming the pressure vessel by a filament winding method.
JP2002298824A 2002-10-11 2002-10-11 Pressure vessel Expired - Lifetime JP4183473B2 (en)

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JP4993743B2 (en) * 2007-12-20 2012-08-08 株式会社Ｉｈｉエアロスペース Pressure vessel connection structure
JP6589776B2 (en) * 2016-09-02 2019-10-16 トヨタ自動車株式会社 tank

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