JP5750407B2 - Pressure vessel - Google Patents

Pressure vessel Download PDF

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JP5750407B2
JP5750407B2 JP2012138775A JP2012138775A JP5750407B2 JP 5750407 B2 JP5750407 B2 JP 5750407B2 JP 2012138775 A JP2012138775 A JP 2012138775A JP 2012138775 A JP2012138775 A JP 2012138775A JP 5750407 B2 JP5750407 B2 JP 5750407B2
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wall
upper wall
chamber
bottom wall
partition
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JP2014001832A (en
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保人 片岡
保人 片岡
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Kobe Steel Ltd
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Kobe Steel Ltd
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Priority to CN201380032207.0A priority patent/CN104395651B/en
Priority to US14/397,277 priority patent/US9476545B2/en
Priority to PCT/JP2013/003722 priority patent/WO2013190807A1/en
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Description

本発明は、圧縮機用ガスクーラー等に用いられる圧力容器に関する。   The present invention relates to a pressure vessel used for a compressor gas cooler or the like.

従来、高圧のガスが収容される圧力容器として、その内部を二室に区画する隔壁を備えるものが知られている。例えば、特許文献1には、高圧のガスを収容する容器本体と、この容器本体内を第一室と第二室とに二等分するように当該容器本体内に形成された隔壁とを有する圧力容器が開示されている。前記容器本体は、前記隔壁を挟んで互いに接合された第一側部円筒壁及び第二側部円筒壁からなる。   Conventionally, what is equipped with the partition which divides the inside into two chambers as a pressure vessel in which a high voltage | pressure gas is accommodated is known. For example, Patent Document 1 includes a container body that stores high-pressure gas, and a partition wall that is formed in the container body so as to divide the container body into a first chamber and a second chamber. A pressure vessel is disclosed. The container body includes a first side cylindrical wall and a second side cylindrical wall that are joined to each other with the partition interposed therebetween.

この圧力容器の各室に高圧のガスが収容されると、前記第一側部円筒壁及び前記第二側部円筒壁には、当該第一側部円筒壁及び第二側部円筒壁が外側に膨張しようとする荷重が加わる。このとき、各円筒壁と前記隔壁との接続部には応力集中が発生するため、前記隔壁の上端及び下端に当該隔壁の他の部位の厚さよりも大きな厚さを有する拡幅部を形成している。   When high pressure gas is stored in each chamber of the pressure vessel, the first side cylindrical wall and the second side cylindrical wall are outside the first side cylindrical wall and the second side cylindrical wall. The load to be expanded is applied to the. At this time, since stress concentration occurs in the connection portion between each cylindrical wall and the partition wall, widening portions having a thickness larger than the thickness of other portions of the partition wall are formed at the upper and lower ends of the partition wall. Yes.

特開2005−155776号公報Japanese Patent Laying-Open No. 2005-155776

しかしながら、上記特許文献1に記載の圧力容器は、当該圧力容器への応力集中の発生を十分に抑制できているとはいえなかった。すなわち、この圧力容器の各室に高圧のガスが収容されると、各円筒壁は外側に膨張するように変形するので、前記拡幅部の厚さ方向の端部と各円筒壁との境界に応力集中が発生する。   However, the pressure vessel described in Patent Literature 1 cannot be said to sufficiently suppress the occurrence of stress concentration on the pressure vessel. That is, when a high-pressure gas is stored in each chamber of the pressure vessel, each cylindrical wall is deformed so as to expand outward, and therefore, at the boundary between the end portion in the thickness direction of the widened portion and each cylindrical wall. Stress concentration occurs.

この発明は、上記のような課題を解決するためになされたものであり、応力集中の発生を抑制可能な圧力容器を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a pressure vessel capable of suppressing the occurrence of stress concentration.

前記課題を解決するため、各円筒壁の変形を抑制すべく、各円筒壁のそれぞれの外面に補強リブを設けることが考えられる。しかしながら、単に各円筒壁の表面に補強リブを設けるだけでは、当該補強リブと円筒壁との境界、すなわち、補強リブのうち前記拡幅部側の端部の付け根に応力集中が残る懸念がある。   In order to solve the above problems, it is conceivable to provide reinforcing ribs on the outer surfaces of the cylindrical walls in order to suppress deformation of the cylindrical walls. However, simply providing a reinforcing rib on the surface of each cylindrical wall may cause a stress concentration to remain at the boundary between the reinforcing rib and the cylindrical wall, that is, at the root of the end portion on the widened portion side of the reinforcing rib.

そこで、本発明は、高圧のガスを収容する容器本体と、この容器本体内を第一室と第二室とに二等分するように当該容器本体内に形成された隔壁とを有する圧力容器であって、前記容器本体は、前記隔壁の上端と接続される上壁と、この上壁と対向するとともに前記隔壁の下端と接続される底壁と、前記上壁の周縁と前記底壁の周縁とを接続する周壁とを有し、前記上壁は、前記周壁の上端及び前記隔壁の上端に接続される上壁本体と、この上壁本体の外面のうち当該上壁本体の内面と前記隔壁の上端との接続部の裏側に位置する部位から外側に向かって突出する形状の上壁突出部と、前記上壁本体のうち前記第一室の外面に立設された上壁第一室側リブと、前記上壁本体のうち前記第二室の外面に立設された上壁第二室側リブとを有し、前記底壁は、前記周壁の下端及び前記隔壁の下端に接続される底壁本体と、この底壁本体の外面のうち当該底壁本体の内面と前記隔壁の下端との接続部の裏側に位置する部位から外側に向かって突出する形状の底壁突出部と、前記底壁本体のうち前記第一室の外面に立設された底壁第一室側リブと、前記底壁本体のうち前記第二室の外面に立設された底壁第二室側リブとを有し、前記上壁第一室側リブ及び前記上壁第二室側リブは、それぞれ前記上壁突出部につながる形状を有し、前記底壁第一室側リブ及び前記底壁第二室側リブは、それぞれ前記底壁突出部につながる形状を有する圧力容器を提供する。   Accordingly, the present invention provides a pressure vessel having a container main body that contains high-pressure gas, and a partition wall formed in the container main body so that the inside of the container main body is divided into a first chamber and a second chamber. The container body includes an upper wall connected to the upper end of the partition wall, a bottom wall facing the upper wall and connected to the lower end of the partition wall, a peripheral edge of the upper wall, and the bottom wall. A peripheral wall connecting a peripheral edge, and the upper wall includes an upper wall main body connected to an upper end of the peripheral wall and an upper end of the partition wall, and an inner surface of the upper wall main body and an outer surface of the upper wall main body An upper wall projecting portion that projects outward from a portion located on the back side of the connecting portion with the upper end of the partition wall, and an upper wall first chamber that is erected on the outer surface of the first chamber of the upper wall body A side rib and an upper wall second chamber side rib standing on the outer surface of the second chamber of the upper wall main body, The bottom wall is located on the back side of the connecting portion between the bottom wall body connected to the lower end of the peripheral wall and the lower end of the partition wall, and the inner surface of the bottom wall body and the lower end of the partition wall among the outer surfaces of the bottom wall body. A bottom wall protruding portion that protrudes outward from the portion, a bottom wall first chamber-side rib that is erected on the outer surface of the first chamber of the bottom wall body, and the first of the bottom wall bodies. A bottom wall second chamber side rib standing on the outer surface of the two chambers, and the upper wall first chamber side rib and the upper wall second chamber side rib each have a shape connected to the upper wall protruding portion. The bottom wall first chamber side rib and the bottom wall second chamber side rib each provide a pressure vessel having a shape connected to the bottom wall protrusion.

この発明の圧力容器によれば、当該圧力容器への応力集中の発生が抑制される。具体的には、前記上壁本体と前記隔壁との接続部は、前記上壁本体の外面のうち前記接続部の裏側に位置する部位から外側に向かって突出する形状の上壁突出部により補強されるので、この部分への応力集中の発生は抑制される。そして、前記上壁本体は、前記上壁第一室側リブ及び前記上壁第二室側リブにより補強されているので、この上壁本体の変形が抑制され、さらに、これらのリブは、前記上壁突出部とつながる形状を有しており前記上壁本体のうち前記接続部の近傍で途切れないので、当該リブと前記上壁本体との境界への応力集中の発生が抑制される。このことは、底壁側についても同様である。すなわち、この発明の圧力容器によれば、前記容器本体と前記隔壁との接続部を補強するだけでは回避することができなかった応力集中の発生が解消される。これにより、前記上壁本体及び前記底壁本体の肉厚を小さくすることが可能となるので、圧力容器全体としての軽量化が可能となる。   According to the pressure vessel of this invention, generation | occurrence | production of the stress concentration to the said pressure vessel is suppressed. Specifically, the connection portion between the upper wall main body and the partition wall is reinforced by an upper wall protruding portion having a shape protruding outward from a portion located on the back side of the connecting portion on the outer surface of the upper wall main body. Therefore, the occurrence of stress concentration on this portion is suppressed. And since the upper wall main body is reinforced by the upper wall first chamber side rib and the upper wall second chamber side rib, the deformation of the upper wall main body is suppressed. Since it has a shape connected to the upper wall protruding portion and is not interrupted in the vicinity of the connecting portion of the upper wall main body, the occurrence of stress concentration at the boundary between the rib and the upper wall main body is suppressed. The same applies to the bottom wall side. That is, according to the pressure vessel of the present invention, the occurrence of stress concentration, which could not be avoided simply by reinforcing the connection portion between the vessel body and the partition wall, is eliminated. Thereby, since it becomes possible to reduce the thickness of the said upper wall main body and the said bottom wall main body, the weight reduction as the whole pressure vessel is attained.

この場合において、前記上壁第一室側リブ及び前記上壁第二室側リブは、前記上壁突出部の上側で互いにつながるとともに当該上壁突出部の上面とつながる形状を有することが好ましい。   In this case, it is preferable that the upper wall first chamber side rib and the upper wall second chamber side rib have a shape connected to each other on the upper side of the upper wall protruding portion and to the upper surface of the upper wall protruding portion.

このようにすれば、前記上壁本体と前記隔壁との接続部や、各リブと前記上壁突出部との境界への応力集中の発生が一層抑制される。   In this way, the occurrence of stress concentration at the connection portion between the upper wall body and the partition wall and the boundary between each rib and the upper wall protrusion is further suppressed.

また、本発明において、前記容器本体は、前記周壁のうち前記隔壁と対向する隔壁対向部と前記上壁本体との境界を補強する上側補強部と、前記隔壁対向部と前記底壁本体との境界を補強する下側補強部とをさらに有することが好ましい。   In the present invention, the container body includes an upper reinforcing portion that reinforces a boundary between the partition wall facing portion that faces the partition wall and the upper wall body of the peripheral wall, and the partition wall facing portion and the bottom wall body. It is preferable to further include a lower reinforcing portion that reinforces the boundary.

このようにすれば、前記隔壁対向部と前記上壁本体との境界及び前記隔壁対向部と前記底壁本体との境界への応力集中を効果的に抑制することができる。   If it does in this way, the stress concentration to the boundary of the said partition opposing part and the said upper wall main body and the boundary of the said partition opposing part and the said bottom wall main body can be suppressed effectively.

また、本発明において、前記隔壁は、一方向に長い形状を有し、当該隔壁の長手方向の中央を含む領域に位置する第一壁の厚さよりも、前記長手方向の一端側に位置する第二壁の厚さ及び前記長手方向の他端側に位置する第三壁の厚さの方が小さいことが好ましい。   Further, in the present invention, the partition wall has a shape that is long in one direction, and the partition wall is positioned closer to one end side in the longitudinal direction than the thickness of the first wall located in the region including the center in the longitudinal direction of the partition wall. It is preferable that the thickness of the two walls and the thickness of the third wall located on the other end side in the longitudinal direction are smaller.

このように、前記隔壁のうち相対的に小さな引張荷重しか作用していない部分の肉厚を小さくすることにより、圧力容器全体として、要求される設計要件を満足しつつ、材料の削減による軽量化を図ることができる。具体的に、この圧力容器では、前記隔壁のうち当該隔壁の長手方向の中央を含む領域に位置する第一壁に比べ、当該隔壁のうち前記周壁により近い部位、すなわち、当該隔壁の前記長手方向の一端側に位置する第二壁及び他端側に位置する第三壁には、小さな引張荷重しか作用しない。よって、これら第二壁及び第三壁のそれぞれの厚さを、当該圧力容器に要求される設計要件を満足する範囲内において、前記第一壁の厚さよりも小さくすることができる。これにより、材料が削減されて圧力容器が軽量化される。   In this way, by reducing the wall thickness of the partition where only a relatively small tensile load is applied, the pressure vessel as a whole can be reduced in weight by reducing the material while satisfying the required design requirements. Can be achieved. Specifically, in this pressure vessel, a portion closer to the peripheral wall of the partition wall, that is, the longitudinal direction of the partition wall than the first wall located in a region including the center of the partition wall in the longitudinal direction. Only a small tensile load acts on the second wall located on the one end side and the third wall located on the other end side. Therefore, the thickness of each of the second wall and the third wall can be made smaller than the thickness of the first wall within a range that satisfies the design requirements required for the pressure vessel. Thereby, material is reduced and a pressure vessel is reduced in weight.

以上のように、本発明によれば、応力集中の発生を抑制可能な圧力容器を提供することができる。   As described above, according to the present invention, a pressure vessel capable of suppressing the occurrence of stress concentration can be provided.

本発明の一実施形態の圧力容器の斜視図である。It is a perspective view of the pressure vessel of one embodiment of the present invention. 図1の圧力容器を異なる角度から見た状態の斜視図である。It is the perspective view of the state which looked at the pressure vessel of FIG. 1 from a different angle. 図1のIII−III線での断面図である。It is sectional drawing in the III-III line of FIG. 図1のIV−IV線での断面図である。It is sectional drawing in the IV-IV line of FIG. (a)隔壁のXY面での断面図である。(b)(a)に示すものの変形例である。(A) It is sectional drawing in the XY plane of a partition. (B) It is a modification of what is shown to (a). 第二壁の長さ寸法と応力との関係を示したグラフである。It is the graph which showed the relationship between the length dimension of a 2nd wall, and stress. 各リブの高さ寸法を変えた例の断面図である。It is sectional drawing of the example which changed the height dimension of each rib. 容器本体の上半分を下方から見た状態の斜視図である。It is the perspective view of the state which looked at the upper half of the container main body from the downward direction. 容器本体の上半分を下方から見た状態の斜視図である。It is the perspective view of the state which looked at the upper half of the container main body from the downward direction.

本発明の好ましい実施形態について、図1ないし図9を参照しながら説明する。   A preferred embodiment of the present invention will be described with reference to FIGS.

図1に示すように、本実施形態の圧力容器は、高圧のガスを収容する略直方体形状の容器本体と、この容器本体内を第一室と第二室とに二等分する隔壁40とを有する。前記第一室及び前記第二室には、熱交換器や配管等が収容されるが、これらは図示を省略している。容器本体は、隔壁40の上端と接続される上壁10と、この上壁10と対向するとともに隔壁40の下端と接続される底壁20と、上壁10の周縁と底壁20の周縁とを接続する周壁30とを有する。また、以下の説明では、上壁10と底壁20との並び方向をZ軸方向とし、第一室と第二室との並び方向をY軸方向とし、Z軸方向及びY軸方向に直交する方向をX軸方向とする。   As shown in FIG. 1, the pressure vessel of the present embodiment includes a substantially rectangular parallelepiped container main body that contains high-pressure gas, and a partition wall 40 that divides the inside of the container main body into a first chamber and a second chamber. Have In the first chamber and the second chamber, a heat exchanger, piping, and the like are accommodated, but these are not shown. The container body includes an upper wall 10 connected to the upper end of the partition wall 40, a bottom wall 20 facing the upper wall 10 and connected to a lower end of the partition wall 40, and a peripheral edge of the upper wall 10 and a peripheral edge of the bottom wall 20. And a peripheral wall 30 for connecting the two. In the following description, the arrangement direction of the top wall 10 and the bottom wall 20 is the Z-axis direction, the arrangement direction of the first chamber and the second chamber is the Y-axis direction, and is orthogonal to the Z-axis direction and the Y-axis direction. The direction to perform is the X-axis direction.

この圧力容器に高圧ガスが封入されると、上壁10、底壁20及び周壁30には、これら各壁がそれぞれ外側に膨張する方向の荷重が作用する。このとき、上壁10と隔壁40との接続部及び底壁20と隔壁40との接続部には相対的に大きな荷重が作用する。本実施形態の圧力容器は、前記接続部を補強することにより、当該接続部近傍への応力集中の発生を回避するとともに、前記接続部を補強するだけでは回避することのできない上壁10及び底壁20への応力集中の発生を抑制するものである。   When high pressure gas is sealed in the pressure vessel, a load in a direction in which each of the walls expands outward acts on the upper wall 10, the bottom wall 20, and the peripheral wall 30. At this time, a relatively large load acts on the connection portion between the upper wall 10 and the partition wall 40 and the connection portion between the bottom wall 20 and the partition wall 40. The pressure vessel according to the present embodiment reinforces the connection portion, thereby avoiding the occurrence of stress concentration near the connection portion, and the top wall 10 and the bottom that cannot be avoided simply by reinforcing the connection portion. The generation of stress concentration on the wall 20 is suppressed.

具体的には、図1に示すように、上壁10は、平板状の上壁本体11と、この上壁本体11の表面から外側に向かって突出する形状の上壁突出部12と、上壁本体11の外面のうち前記第一室側に立設された上壁第一室側リブ13aと、上壁本体11の外面のうち前記第二室側に立設された上壁第二室側リブ13bとを有する。   Specifically, as shown in FIG. 1, the upper wall 10 includes a flat upper wall main body 11, an upper wall protruding portion 12 that protrudes outward from the surface of the upper wall main body 11, and an upper wall 10. The upper wall first chamber side rib 13a erected on the first chamber side of the outer surface of the wall body 11, and the upper wall second chamber erected on the second chamber side of the outer surface of the upper wall body 11 Side ribs 13b.

上壁本体11は、周壁30の上端を塞ぐ形状を有し、この周壁30の上端とつながっているとともに隔壁40の上端とつながっている。図4に示すように、この上壁本体11と周壁30との境界は、外側に向かって凸となった湾曲面となっている。本実施形態では、この上壁本体11は、一方向(Y軸方向)に長い略矩形状としている。   The upper wall body 11 has a shape that closes the upper end of the peripheral wall 30, is connected to the upper end of the peripheral wall 30, and is connected to the upper end of the partition wall 40. As shown in FIG. 4, the boundary between the upper wall body 11 and the peripheral wall 30 is a curved surface that protrudes outward. In the present embodiment, the upper wall body 11 has a substantially rectangular shape that is long in one direction (Y-axis direction).

図4に示すように、上壁突出部12は、上壁本体11の外面のうち当該上壁本体11の内面と隔壁40の上端との接続部の裏側に位置する部位を含むように形成される。この上壁突出部12は、上壁本体11の長手方向の略中央を当該上壁本体11の短手方向(X軸方向)に沿って伸びる形状を有する。本実施形態では、上壁突出部12の上壁本体11の外面からの突出量を、当該上壁突出部12の長手方向の全域にわたって一定としている。この上壁突出部12の短手方向(Y軸方向)の寸法は、上壁本体11の内面と隔壁40の上端との接続部の寸法よりも大きくなるように設定されている。   As shown in FIG. 4, the upper wall protrusion 12 is formed so as to include a portion located on the back side of the connection portion between the inner surface of the upper wall body 11 and the upper end of the partition wall 40 among the outer surfaces of the upper wall body 11. The The upper wall projecting portion 12 has a shape extending substantially along the longitudinal direction of the upper wall main body 11 along the short direction (X-axis direction) of the upper wall main body 11. In the present embodiment, the amount of protrusion from the outer surface of the upper wall main body 11 of the upper wall protrusion 12 is constant over the entire length of the upper wall protrusion 12. The dimension of the upper wall protruding portion 12 in the short direction (Y-axis direction) is set to be larger than the dimension of the connecting portion between the inner surface of the upper wall main body 11 and the upper end of the partition wall 40.

上壁第一室側リブ13aは、上壁本体11のうち前記第一室側の部位を補強する。この上壁第一室側リブ13aは、上壁本体11の短手方向と平行な方向に沿って伸びる形状の短手方向リブ14aと、上壁本体11の長手方向と平行な方向、すなわち、上壁突出部12と交差する方向に沿って伸びる形状の長手方向リブ15aとを有する。これら短手方向リブ14aと長手方向リブ15aとは、それぞれ同じ高さを有し、その高さは上壁突出部12よりも高く設定されている。長手方向リブ15aは、上壁突出部12の側面及び上面とつながる形状を有する。本実施形態では、短手方向リブ14aを3本、長手方向リブ15aを6本としている。また、この上壁第一側リブ13aは、上壁本体11の隅角部には形成されない。すなわち、短手方向リブ14aのうち最も外側に立設されたものの長さは、そのすぐ内側に立設されたものの長さよりも短く、また、長手方向リブ15aのうち最も外側に立設されたものの長さは、そのすぐ内側に立設されたものの長さよりも短くなっている。   The upper wall first chamber side rib 13 a reinforces the first chamber side portion of the upper wall main body 11. The upper wall first chamber side rib 13a includes a short direction rib 14a having a shape extending along a direction parallel to the short direction of the upper wall body 11, and a direction parallel to the longitudinal direction of the upper wall body 11, that is, Longitudinal ribs 15a having a shape extending along a direction intersecting the upper wall protruding portion 12 are provided. The short-side ribs 14 a and the long-side ribs 15 a have the same height, and the height is set higher than that of the upper wall protruding portion 12. The longitudinal rib 15 a has a shape connected to the side surface and the upper surface of the upper wall protrusion 12. In the present embodiment, there are three short-side ribs 14a and six long-side ribs 15a. Further, the upper wall first side rib 13 a is not formed at the corner of the upper wall body 11. That is, the length of the short-side rib 14a that is erected on the outermost side is shorter than the length of the rib that is erected on the inner side, and the length of the long-side rib 15a is erected on the outermost side. The length of the thing is shorter than the length of the thing erected immediately inside.

上壁第二室側リブ13bは、上壁本体11のうち前記第二室側の部位を補強する。この上壁第二室側リブ13bは、上壁本体11の短手方向と平行な方向に沿って伸びる形状の短手方向リブ14bと、上壁本体11の長手方向と平行な方向、すなわち、上壁突出部12と交差する方向に沿って伸びる形状の長手方向リブ15bとを有する。これら短手方向リブ14bと長手方向リブ15bとは、それぞれ同じ高さを有し、その高さは上壁突出部12よりも高く設定されている。長手方向リブ15bは、上壁突出部12の側面及び上面とつながる形状を有する。また、上壁第一室側リブ13aの長手方向リブ15aと上壁第二室側リブ13bの長手方向リブ15bとは、上壁突出部12の上面で互いにつながる形状を有する。すなわち、各長手方向リブ15a,15bは、上壁突出部12と接触しつつ当該上壁突出部12の上側を跨ぐように上壁本体11の長手方向に沿って伸びる形状を有する。本実施形態では、短手方向リブ14bを3本、長手方向リブ15bを6本としている。また、この上壁第二側リブ13bは、上壁本体11の隅角部には形成されない。すなわち、短手方向リブ14bのうち最も外側に立設されたものの長さは、そのすぐ内側に立設されたものの長さよりも短く、また、長手方向リブ15bのうち最も外側に立設されたものの長さは、そのすぐ内側に立設されたものの長さよりも短くなっている。   The upper wall second chamber side rib 13b reinforces the portion of the upper wall main body 11 on the second chamber side. The upper wall second chamber side rib 13b includes a lateral rib 14b having a shape extending along a direction parallel to the lateral direction of the upper wall body 11, and a direction parallel to the longitudinal direction of the upper wall body 11, that is, Longitudinal ribs 15b having a shape extending along a direction intersecting the upper wall protruding portion 12 are provided. The short-side ribs 14b and the long-side ribs 15b have the same height, and the height is set to be higher than that of the upper wall protruding portion 12. The longitudinal rib 15 b has a shape connected to the side surface and the upper surface of the upper wall protrusion 12. Further, the longitudinal ribs 15 a of the upper wall first chamber side rib 13 a and the longitudinal ribs 15 b of the upper wall second chamber side rib 13 b have shapes that are connected to each other on the upper surface of the upper wall protruding portion 12. That is, each of the longitudinal ribs 15 a and 15 b has a shape extending along the longitudinal direction of the upper wall main body 11 so as to straddle the upper side of the upper wall protruding portion 12 while being in contact with the upper wall protruding portion 12. In the present embodiment, three short-side ribs 14b and six long-side ribs 15b are provided. Further, the upper wall second side rib 13 b is not formed at the corner portion of the upper wall main body 11. That is, the length of the short-side rib 14b that is erected on the outermost side is shorter than the length of the rib that is erected on the inner side, and the length of the long-side rib 15b is erected on the outermost side. The length of the thing is shorter than the length of the thing erected immediately inside.

図2に示すように、底壁20は、上壁本体11と同形状の底壁本体21と、この底壁本体21の表面から外側に向かって突出する形状の底壁突出部22と、底壁本体21の外面のうち前記第一室側に立設された底壁第一室側リブ23aと、上壁本体11の外面のうち前記第二室側に立設された底壁第二室側リブ23bとを有する。   As shown in FIG. 2, the bottom wall 20 includes a bottom wall main body 21 having the same shape as the upper wall main body 11, a bottom wall protruding portion 22 having a shape protruding outward from the surface of the bottom wall main body 21, and a bottom A bottom wall first chamber side rib 23a standing on the first chamber side of the outer surface of the wall body 21, and a bottom wall second chamber standing on the second chamber side of the outer surface of the upper wall body 11. Side ribs 23b.

底壁本体21は、周壁30の下端を塞ぐ形状を有し、この周壁30の下端とつながっているとともに隔壁40の下端とつながっている。図4に示すように、この底壁本体21と周壁30との境界は、外側に向かって凸となった湾曲面となっている。   The bottom wall body 21 has a shape that closes the lower end of the peripheral wall 30, is connected to the lower end of the peripheral wall 30, and is connected to the lower end of the partition wall 40. As shown in FIG. 4, the boundary between the bottom wall main body 21 and the peripheral wall 30 is a curved surface that is convex outward.

図4に示すように、底壁突出部22は、底壁本体21の外面のうち当該底壁本体21の内面と隔壁40の下端との接続部の裏側に位置する部位を含むように形成される。この底壁突出部22は、底壁本体21の長手方向の略中央を当該底壁本体21の短手方向(X軸方向)に沿って伸びる形状を有する。本実施形態では、底壁突出部22の底壁本体21の外面からの突出量を、当該底壁突出部22の長手方向の全域にわたって一定としている。この底壁突出部22の短手方向(Y軸方向)の寸法は、底壁本体21の内面と隔壁40の下端との接続部の寸法よりも大きくなるように設定されている。また、底壁本体21のうち底壁突出部22とつながった部位は、底壁本体21のその他の部位よりも外側(図4では下側)に突出する形状を有する。   As shown in FIG. 4, the bottom wall protrusion 22 is formed so as to include a portion of the outer surface of the bottom wall body 21 that is located on the back side of the connection portion between the inner surface of the bottom wall body 21 and the lower end of the partition wall 40. The The bottom wall protrusion 22 has a shape that extends substantially in the longitudinal center of the bottom wall body 21 along the short direction (X-axis direction) of the bottom wall body 21. In the present embodiment, the amount of protrusion of the bottom wall protrusion 22 from the outer surface of the bottom wall body 21 is constant over the entire length of the bottom wall protrusion 22 in the longitudinal direction. The dimension of the bottom wall protrusion 22 in the short direction (Y-axis direction) is set to be larger than the dimension of the connection portion between the inner surface of the bottom wall body 21 and the lower end of the partition wall 40. Moreover, the site | part connected with the bottom wall protrusion part 22 among the bottom wall main bodies 21 has a shape which protrudes on the outer side (lower side in FIG. 4) other parts of the bottom wall main body 21.

底壁第一室側リブ23aは、底壁本体21のうち前記第一室側の部位を補強する。この底壁第一室側リブ23aは、底壁本体21の短手方向と平行な方向に沿って伸びる形状の短手方向リブ24aと、底壁本体21の長手方向と平行な方向、すなわち、底壁突出部22と交差する方向に沿って伸びる形状の長手方向リブ25aとを有する。これら短手方向リブ24aと長手方向リブ25aとは、それぞれ同じ高さを有し、その高さは底壁突出部22よりも低く設定されている。長手方向リブ25aは、この底壁突出部22の側面とつながる形状を有する。本実施形態では、短手方向リブ24aを2本、長手方向リブ25aを4本としている。   The bottom wall first chamber side rib 23 a reinforces the first chamber side portion of the bottom wall main body 21. The bottom wall first chamber side rib 23a includes a short direction rib 24a having a shape extending along a direction parallel to the short direction of the bottom wall body 21, and a direction parallel to the longitudinal direction of the bottom wall body 21, that is, Long ribs 25a having a shape extending along the direction intersecting the bottom wall protrusion 22 are provided. The short-side ribs 24 a and the long-side ribs 25 a have the same height, and the height is set lower than the bottom wall protrusion 22. The longitudinal rib 25 a has a shape connected to the side surface of the bottom wall protrusion 22. In the present embodiment, two short-side ribs 24a and four long-side ribs 25a are provided.

底壁第二室側リブ23bは、底壁本体21のうち前記第二室側の部位を補強する。この底壁第二室側リブ23bは、底壁本体21の短手方向と平行な方向に沿って伸びる形状の短手方向リブ24bと、底壁本体21の長手方向と平行な方向、すなわち、底壁突出部22と交差する方向に沿って伸びる形状の長手方向リブ25bとを有する。これら短手方向リブ24aと長手方向リブ25aとは、それぞれ同じ高さを有し、その高さは底壁突出部22よりも低く設定されている。長手方向リブ25bは、この底壁突出部22の側面とつながる形状を有する。本実施形態では、短手方向リブ24bを2本、長手方向リブ25bを4本としている。   The bottom wall second chamber side rib 23b reinforces the portion of the bottom wall main body 21 on the second chamber side. The bottom wall second chamber side rib 23b includes a short direction rib 24b extending along a direction parallel to the short direction of the bottom wall body 21, and a direction parallel to the longitudinal direction of the bottom wall body 21, that is, Long ribs 25b having a shape extending along a direction intersecting the bottom wall protrusion 22 are provided. The short-side ribs 24 a and the long-side ribs 25 a have the same height, and the height is set lower than the bottom wall protrusion 22. The longitudinal rib 25 b has a shape connected to the side surface of the bottom wall protrusion 22. In the present embodiment, two short-side ribs 24b and four long-side ribs 25b are provided.

周壁30は、上壁本体11の周縁と底壁本体21の周縁とを接続する。本実施形態では、この周壁30は、全周にわたって一定の厚さを有する略四角筒状としている。そして、周壁30のうち隔壁40と対向する隔壁対向部30aは、隔壁40の長手方向と平行な方向に伸びる形状としている。この周壁30は、隔壁40と交差する部位に形成された第一側壁31及び第二側壁32を有する。第一側壁31は、前記第一室内と容器本体外とを連通する第一開口部31aと、前記第二室内と容器本体外とを連通する第二開口部31bとを有する。同様に、第二側壁32は、前記第一室内と容器本体外とを連通する第一開口部32aと、前記第二室と容器本体外とを連通する第二開口部32bとを有する。第一室及び第二室への熱交換器や配管等の収容後、各開口部は、それぞれ当該開口部を覆う形状の蓋により塞がれる。なお、各図では、前記蓋の図示は省略している。   The peripheral wall 30 connects the peripheral edge of the upper wall body 11 and the peripheral edge of the bottom wall body 21. In the present embodiment, the peripheral wall 30 has a substantially rectangular tube shape having a constant thickness over the entire periphery. The partition facing portion 30 a that faces the partition 40 in the peripheral wall 30 has a shape that extends in a direction parallel to the longitudinal direction of the partition 40. The peripheral wall 30 includes a first side wall 31 and a second side wall 32 that are formed at portions that intersect the partition wall 40. The first side wall 31 has a first opening 31a that communicates the first chamber with the outside of the container body, and a second opening 31b that communicates the second chamber with the outside of the container body. Similarly, the 2nd side wall 32 has the 1st opening part 32a which connects the said 1st chamber and the container main body exterior, and the 2nd opening part 32b which connects the said 2nd chamber and the container main body exterior. After housing the heat exchanger, piping, and the like in the first chamber and the second chamber, each opening is closed with a lid that covers the opening. In each figure, illustration of the lid is omitted.

ここで、先に説明したように、この圧力容器に高圧ガスが封入されると、上壁10、底壁20及び周壁30には、これら各壁がそれぞれ外側に膨張する方向の荷重が作用する。このとき、隔壁40は、外側に膨張する上壁10と底壁20とにより、当該上壁10と底壁20とを結ぶ上下方向(Z軸方向)に引っ張られるので、当該隔壁40には前記上下方向の引張荷重が作用する。この引張荷重は、隔壁40の全域にわたって均等に分布していない。つまり、この隔壁40には、相対的に大きな引張荷重が作用する部位と小さな引張荷重が作用する部位とが存在する。具体的には、上壁本体11及び底壁本体21は、その中央部での変形量が最も大きくなり、当該中央部から周壁30との接続部に向かうにしたがってその変形量が小さくなるので、隔壁40に作用する引張荷重も、当該隔壁40の中央部で最大となり、当該中央部から隔壁40の両端部に向かうにしたがって小さくなる。そこで、本実施形態では、隔壁40の厚さを当該隔壁40に作用する前記引張荷重の分布に略対応させることとした。すなわち、基本的には、前記引張荷重が相対的に大きくなる部位の肉厚を大きくするとともに、前記引張荷重が相対的に小さくなる部位の肉厚を小さくした。   Here, as described above, when high-pressure gas is sealed in the pressure vessel, a load is applied to the top wall 10, the bottom wall 20, and the peripheral wall 30 in a direction in which each of the walls expands outward. . At this time, the partition wall 40 is pulled in the vertical direction (Z-axis direction) connecting the top wall 10 and the bottom wall 20 by the top wall 10 and the bottom wall 20 that expand outward, so that the partition wall 40 includes the above-described partition wall 40. A vertical tensile load acts. This tensile load is not evenly distributed over the entire partition 40. That is, the partition 40 has a portion where a relatively large tensile load acts and a portion where a small tensile load acts. Specifically, the upper wall main body 11 and the bottom wall main body 21 have the largest deformation amount at the central portion, and the deformation amount becomes smaller from the central portion toward the connecting portion with the peripheral wall 30. The tensile load acting on the partition wall 40 is also maximized at the central portion of the partition wall 40 and decreases from the central portion toward both ends of the partition wall 40. Therefore, in the present embodiment, the thickness of the partition wall 40 is made to substantially correspond to the distribution of the tensile load acting on the partition wall 40. That is, basically, the thickness of the portion where the tensile load becomes relatively large is increased, and the thickness of the portion where the tensile load becomes relatively small is decreased.

具体的に、隔壁40は、図3及び図4に示すように、上壁本体11との接続部と底壁本体21との接続部とを結ぶ方向(Z軸方向)及び当該各壁40の厚さ方向(Y軸方向)のそれぞれに直交する方向(X軸方向)に長い矩形の平板状を呈する。なお、図3は、図1のIII−III線での断面図であるが、このIII−III線は、図1の上壁突出部12と当該上壁突出部12のすぐ隣に隣接する短手方向リブ14bとの間を通る。この隔壁40は、当該隔壁40の長手方向の中央を含む領域に位置する第一壁41と、前記長手方向の一端側に位置する第二壁42と、前記長手方向の他端側に位置する第三壁43とを有する。これらの各壁は、前記長手方向の一端側から他端側に向かって第二壁42、第一壁41及び第三壁43の順につながっている。なお、本実施形態では、隔壁40が、Y軸方向からみて一方向に長い矩形である例について示すが、この隔壁40は、同方向からみて正方形であってもよく、以下、いずれの場合であっても、X軸方向を当該隔壁40の長手方向として説明する。   Specifically, as shown in FIGS. 3 and 4, the partition wall 40 has a direction (Z-axis direction) connecting a connection portion between the upper wall main body 11 and a connection portion between the bottom wall main body 21 and each wall 40. It has a rectangular plate shape that is long in the direction (X-axis direction) orthogonal to the thickness direction (Y-axis direction). 3 is a cross-sectional view taken along the line III-III in FIG. 1. This line III-III is a short line adjacent to the upper wall protrusion 12 and the upper wall protrusion 12 in FIG. It passes between the hand ribs 14b. The partition wall 40 is positioned on the first wall 41 located in a region including the center of the partition wall 40 in the longitudinal direction, the second wall 42 positioned on one end side in the longitudinal direction, and on the other end side in the longitudinal direction. And a third wall 43. Each of these walls is connected in the order of the second wall 42, the first wall 41, and the third wall 43 from one end side in the longitudinal direction to the other end side. In the present embodiment, an example in which the partition wall 40 is a rectangle that is long in one direction when viewed from the Y-axis direction is shown. However, the partition wall 40 may be square when viewed from the same direction. Even in such a case, the X-axis direction will be described as the longitudinal direction of the partition 40.

第一壁41、第二壁42及び第三壁43は、すべて一方向(X軸方向)に長い矩形の平板状を呈する。第一壁41は、その上端が上壁本体11とつながっており、その下端が底壁本体21とつながっている。第二壁42及び第三壁43は、その上端が上壁本体11とつながっており、その下端が底壁本体21とつながっており、そして、その第一壁41とつながった側と反対側の端部が周壁30とつながっている。図5(a)に示すように、第二壁42は、その厚さが第一壁41の厚さよりもの方が小さな形状を有し、かつ、第三壁43は、その厚さが第一壁41の厚さよりも小さな形状を有する。本実施形態では、これら第一壁41、第二壁42及び第三壁43は、それぞれその長手方向の全域にわたって一様な厚さとしており、かつ、それぞれの厚さ方向の中心軸が一致する配置としている。ただし、図5(b)に示すように、第一壁41の表面と第二壁42の表面とは滑らかにつながっており、第一壁41の表面と第三壁43の表面とは滑らかにつながっていることが好ましい。このようにすれば、第一壁41と第二壁42との境界近傍、及び第一壁41と第三壁43との境界近傍に発生する応力集中を緩和することができる。   The first wall 41, the second wall 42, and the third wall 43 all have a rectangular flat plate shape that is long in one direction (X-axis direction). The first wall 41 has an upper end connected to the upper wall main body 11 and a lower end connected to the bottom wall main body 21. The second wall 42 and the third wall 43 have upper ends connected to the upper wall main body 11, lower ends connected to the bottom wall main body 21, and opposite to the side connected to the first wall 41. The end is connected to the peripheral wall 30. As shown in FIG. 5A, the second wall 42 has a shape whose thickness is smaller than the thickness of the first wall 41, and the third wall 43 has a thickness of the first wall 41. It has a shape smaller than the thickness of the wall 41. In the present embodiment, the first wall 41, the second wall 42, and the third wall 43 have a uniform thickness over the entire area in the longitudinal direction, and the central axes in the respective thickness directions coincide with each other. It is arranged. However, as shown in FIG. 5B, the surface of the first wall 41 and the surface of the second wall 42 are smoothly connected, and the surface of the first wall 41 and the surface of the third wall 43 are smooth. It is preferable that they are connected. In this way, stress concentration occurring near the boundary between the first wall 41 and the second wall 42 and near the boundary between the first wall 41 and the third wall 43 can be alleviated.

そして、第二壁42の長手方向の寸法L1及び第三壁43の長手方向の寸法L2は、それぞれ周壁30のうち隔壁40と対向する隔壁対向部30aと隔壁40との間の寸法B(図1を参照)の2分の1以下とされることが好ましい。これは、図6に示すように、前記寸法L1が前記寸法Bの2分の1以下となる範囲では、第二壁42に発生する応力が第一壁41に発生する応力の2分の1以下となるという理由による。そのため、前記寸法L1を前記寸法Bの2分の1以下とすることにより、第二壁42の厚さを第一壁41の厚さの2分の1以下に設定することが可能となる。このことは、第三壁43についても同様である。本実施形態では、第二壁42の長手方向の寸法L1と第三壁43の長手方向の寸法L2とを同一としている。   The longitudinal dimension L1 of the second wall 42 and the longitudinal dimension L2 of the third wall 43 are respectively the dimension B between the partition facing part 30a facing the partition 40 of the peripheral wall 30 and the partition 40 (see FIG. 1)) or less. As shown in FIG. 6, the stress generated in the second wall 42 is half of the stress generated in the first wall 41 in the range where the dimension L1 is less than or equal to half of the dimension B. The reason is as follows. Therefore, by setting the dimension L1 to be less than or equal to half of the dimension B, the thickness of the second wall 42 can be set to be less than or equal to half of the thickness of the first wall 41. The same applies to the third wall 43. In the present embodiment, the longitudinal dimension L1 of the second wall 42 and the longitudinal dimension L2 of the third wall 43 are the same.

さらに、容器本体内に高圧のガスが収容されて第一壁41に上下方向の引張荷重が作用することによって当該第一壁41に生じる応力が、第一壁41内で均一に分布するようにこの第一壁41の厚さが設定されてもよい。第二壁42及び第三壁43についても同様である。このようにすれば、各壁の厚さが最適化されて材料に無駄がなくなり、圧力容器が一層軽量化される。   Further, the stress generated in the first wall 41 when the high-pressure gas is accommodated in the container body and the tensile load in the vertical direction acts on the first wall 41 is uniformly distributed in the first wall 41. The thickness of the first wall 41 may be set. The same applies to the second wall 42 and the third wall 43. In this way, the thickness of each wall is optimized, the material is not wasted, and the pressure vessel is further reduced in weight.

また、これまで説明してきた容器本体に高圧ガスが封入されたとき、相対的に高応力となる部位は、上壁本体11と周壁30の隔壁対向部30aとの境界及び底壁本体21と隔壁対向部30aとの境界であるので、当該容器本体は、この境界近傍を補強する補強部をさらに有することが好ましい。本実施形態では、高応力となる部位が上壁10側及び底壁20側で同様であるので、上壁10側を例にとって説明する。具体的には、図8及び図9に示すように、上側補強部51,52を設けることが好ましい。図8に示す上側補強部51は、隔壁対向部30aの内面と上壁本体11の内面との境界から内側に向かって膨出するとともに当該境界に沿って伸びる形状を有する。図9に示す上側補強部52は、隔壁対向部30aの内面と上壁本体11の内面との境界を跨ぐように当該隔壁対向部30aの内面と上壁本体11の内面とに接続される形状を有する。なお、これら上側補強部51,52は、容器本体の内面ではなく外面に設けられてもよい。   Further, when the high pressure gas is sealed in the container main body described so far, the portions that become relatively high stress are the boundary between the upper wall main body 11 and the partition wall facing portion 30a of the peripheral wall 30, and the bottom wall main body 21 and the partition wall. Since it is a boundary with the opposing part 30a, it is preferable that the said container main body further has a reinforcement part which reinforces this boundary vicinity. In this embodiment, since the site | part which becomes high stress is the same on the upper wall 10 side and the bottom wall 20 side, it demonstrates taking the upper wall 10 side as an example. Specifically, as shown in FIGS. 8 and 9, it is preferable to provide upper reinforcing portions 51 and 52. 8 has a shape that bulges inward from the boundary between the inner surface of the partition facing portion 30a and the inner surface of the upper wall main body 11 and extends along the boundary. The upper reinforcing portion 52 shown in FIG. 9 is connected to the inner surface of the partition wall facing portion 30 a and the inner surface of the upper wall body 11 so as to straddle the boundary between the inner surface of the partition wall facing portion 30 a and the inner surface of the upper wall body 11. Have In addition, these upper side reinforcement parts 51 and 52 may be provided in the outer surface instead of the inner surface of the container main body.

以上説明したように、本実施形態の圧力容器では、当該圧力容器への応力集中の発生が抑制される。具体的には、上壁本体11と隔壁40との接続部は上壁突出部12により補強されるので、この部分への応力集中の発生が抑制される。そして、上壁本体11は、上壁第一室側リブ13a及び上壁第二室側リブ13bにより補強されているので、この上壁本体11の変形が抑制される。さらに、これら上壁第一室側リブ13a及び上壁第二室側リブ13bは、上壁突出部12とつながる形状を有しており上壁本体11のうち前記接続部の近傍で途切れないので、当該リブと上壁本体11との境界への応力集中の発生が抑制される。このことは、底壁20側についても同様である。すなわち、この実施形態の圧力容器によれば、容器本体と隔壁40との接続部を補強するだけでは回避することのできない上壁10及び底壁20への応力集中の発生が解消される。これにより、上壁本体11及び底壁本体21の肉厚を小さくすることが可能となるので、圧力容器全体としての軽量化が可能となる。   As described above, in the pressure vessel of this embodiment, the occurrence of stress concentration on the pressure vessel is suppressed. Specifically, since the connecting portion between the upper wall main body 11 and the partition wall 40 is reinforced by the upper wall protruding portion 12, the occurrence of stress concentration on this portion is suppressed. And since the upper wall main body 11 is reinforced by the upper wall 1st chamber side rib 13a and the upper wall 2nd chamber side rib 13b, a deformation | transformation of this upper wall main body 11 is suppressed. Furthermore, the upper wall first chamber side rib 13a and the upper wall second chamber side rib 13b have a shape connected to the upper wall protruding portion 12 and are not interrupted in the vicinity of the connecting portion in the upper wall main body 11. The occurrence of stress concentration at the boundary between the rib and the upper wall body 11 is suppressed. The same applies to the bottom wall 20 side. That is, according to the pressure vessel of this embodiment, the occurrence of stress concentration on the top wall 10 and the bottom wall 20 that cannot be avoided simply by reinforcing the connecting portion between the vessel body and the partition wall 40 is eliminated. Thereby, since it becomes possible to make the wall thickness of the upper wall main body 11 and the bottom wall main body 21 small, the weight reduction as the whole pressure vessel is attained.

また、本実施形態では、上壁第一室側リブ13a及び上壁第二室側リブ13bは、上壁突出部12の上側で互いにつながるとともに当該上壁突出部12の上面とつながる形状を有するので、上壁本体11と隔壁40との接続部や、各リブ13a,13bと上壁突出部12との境界への応力集中の発生が一層抑制される。   In the present embodiment, the upper wall first chamber side rib 13 a and the upper wall second chamber side rib 13 b are connected to each other on the upper side of the upper wall protruding portion 12 and connected to the upper surface of the upper wall protruding portion 12. Therefore, the occurrence of stress concentration at the connection portion between the upper wall main body 11 and the partition wall 40 and the boundary between the ribs 13a and 13b and the upper wall protruding portion 12 is further suppressed.

また、本実施形態では、隔壁40のうち相対的に小さな引張荷重しか作用していない部分の肉厚を小さくしたので、圧力容器全体として、要求される設計要件を満足しつつ、材料の削減による軽量化を図ることができる。具体的には、第二壁42及び第三壁43のそれぞれの厚さを、当該圧力容器に要求される設計要件を満足する範囲内において、第一壁41の厚さよりも小さくしたので、材料が削減されて圧力容器が軽量化される。   Moreover, in this embodiment, since the thickness of the part which only the comparatively small tensile load is acting among the partition 40 was made small, by satisfying the design requirements requested | required as the whole pressure vessel, by reduction of material Weight reduction can be achieved. Specifically, since the thickness of each of the second wall 42 and the third wall 43 is smaller than the thickness of the first wall 41 within a range that satisfies the design requirements required for the pressure vessel, The pressure vessel is reduced in weight.

また、本実施形態では、第二壁42及び第三壁43のそれぞれの長手方向の寸法L1を隔壁40と隔壁対向部30aとの間の寸法Bの2分の1以下としたので、隔壁40のうち相対的に大きな引張荷重が作用する第一壁41の長手方向の寸法が十分に確保されて前記設計要件の満足が容易となるとともに、第二壁42及び第三壁43のそれぞれの厚さを第一壁41の厚さよりも小さくすることにより、圧力容器の軽量化を図ることができる。   In the present embodiment, the dimension L1 in the longitudinal direction of each of the second wall 42 and the third wall 43 is less than or equal to half of the dimension B between the partition wall 40 and the partition wall facing portion 30a. Of the first wall 41 to which a relatively large tensile load acts is sufficiently ensured to facilitate the satisfaction of the design requirements, and the thicknesses of the second wall 42 and the third wall 43, respectively. By making the thickness smaller than the thickness of the first wall 41, it is possible to reduce the weight of the pressure vessel.

ここで、本実施形態の変形例について、図7を参照しながら説明する。先に説明したように、容器本体の第一室及び第二室に高圧ガスが封入されたときの上壁本体11の変形量は、その中央部に比べ、周壁30との接続部に近い部位の方が小さくなる。具体的には、上壁本体11のうち第一壁41の厚さ方向(Y軸方向)において当該第一壁41と隣接する第一領域の変形量よりも、この第一領域以外の第二領域(上壁本体11のうち第二壁42の厚さ方向において当該第二壁42と隣接する領域、及び上壁本体11のうち第三壁43の厚さ方向において当該第三壁43と隣接する領域)の変形量の方が小さくなる。そのため、上壁第一室側リブ13a及び上壁第二室側リブ13bは、前記第一領域に立設された部位の高さ寸法よりも、前記第二領域に立設された部位の高さ寸法を小さくすることができる。このように、上壁本体11のうち相対的に小さな応力しか生じない前記第二領域に立設されたリブの高さ寸法を、上壁本体11のうち相対的に大きな応力が生じる前記第一領域に立設されたリブの高さ寸法よりも小さくすることにより、大幅な重量増を回避しながら、上壁本体11の強度を向上させることができる。このことは、底壁20側についても同様である。   Here, a modification of the present embodiment will be described with reference to FIG. As described above, the amount of deformation of the upper wall body 11 when high-pressure gas is sealed in the first chamber and the second chamber of the container body is closer to the connection portion with the peripheral wall 30 than the center portion thereof. Is smaller. Specifically, the second wall other than the first region is larger than the deformation amount of the first region adjacent to the first wall 41 in the thickness direction (Y-axis direction) of the first wall 41 in the upper wall body 11. Region (region of the upper wall body 11 adjacent to the second wall 42 in the thickness direction of the second wall 42, and region adjacent to the third wall 43 in the thickness direction of the third wall 43 of the upper wall body 11 The amount of deformation in the area to be smaller becomes smaller. Therefore, the upper wall first chamber side rib 13a and the upper wall second chamber side rib 13b are higher in the height of the portion standing in the second region than in the height dimension of the portion standing in the first region. The size can be reduced. As described above, the height of the ribs erected in the second region where only a relatively small stress is generated in the upper wall main body 11 is set to the first dimension in which a relatively large stress is generated in the upper wall main body 11. By making it smaller than the height dimension of the rib erected in the region, the strength of the upper wall body 11 can be improved while avoiding a significant weight increase. The same applies to the bottom wall 20 side.

なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。   The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

例えば、上記実施形態では、容器本体がY軸方向に長い直方体形状である例について示したが、X軸方向に長い直方体形状であってもよい。   For example, in the above-described embodiment, an example in which the container main body has a rectangular parallelepiped shape that is long in the Y-axis direction is shown, but it may be a rectangular solid shape that is long in the X-axis direction.

また、上記実施形態では、周壁30の隔壁対向部30aは、隔壁40の長手方向と平行な方向に伸びる形状を有する例について示したが、この隔壁対向部30aは、容器本体の外側に向かって凸となった湾曲面であってもよい。   Moreover, in the said embodiment, although the partition opposing part 30a of the surrounding wall 30 showed about the example which has a shape extended in the direction parallel to the longitudinal direction of the partition 40, this partition opposing part 30a is toward the outer side of a container main body. It may be a convex curved surface.

また、上記実施形態では、隔壁40の厚さを当該隔壁40の長手方向に沿って異ならせた例について示したが、この隔壁40の厚さは、その長手方向に沿って一定であってもよい。   In the above-described embodiment, the example in which the thickness of the partition wall 40 is varied along the longitudinal direction of the partition wall 40 is shown, but the thickness of the partition wall 40 may be constant along the longitudinal direction. Good.

10 上壁
11 上壁本体
12 上壁突出部
13a 上壁第一室側リブ
13b 上壁第二室側リブ
14a 短手方向リブ
14b 短手方向リブ
15a 長手方向リブ
15b 長手方向リブ
20 底壁
21 底壁本体
22 底壁突出部
23a 底壁第一室側リブ
23b 底壁第二室側リブ
30 周壁
30a 隔壁対向部
31 第一側壁
32 第二側壁
40 隔壁
41 第一壁
42 第二壁
43 第三壁
DESCRIPTION OF SYMBOLS 10 Upper wall 11 Upper wall main body 12 Upper wall protrusion 13a Upper wall 1st chamber side rib 13b Upper wall 2nd chamber side rib 14a Short direction rib 14b Short direction rib 15a Long direction rib 15b Long direction rib 20 Bottom wall 21 Bottom wall main body 22 Bottom wall protrusion 23a Bottom wall first chamber side rib 23b Bottom wall second chamber side rib 30 Peripheral wall 30a Partition facing portion 31 First sidewall 32 Second sidewall 40 Partition 41 First wall 42 Second wall 43 First Three walls

Claims (4)

高圧のガスを収容する容器本体と、この容器本体内を第一室と第二室とに二等分するように当該容器本体内に形成された隔壁とを有する圧力容器であって、
前記容器本体は、前記隔壁の上端と接続される上壁と、この上壁と対向するとともに前記隔壁の下端と接続される底壁と、前記上壁の周縁と前記底壁の周縁とを接続する周壁とを有し、
前記上壁は、前記周壁の上端及び前記隔壁の上端に接続される上壁本体と、この上壁本体の外面のうち当該上壁本体の内面と前記隔壁の上端との接続部の裏側に位置する部位から外側に向かって突出する形状の上壁突出部と、前記上壁本体のうち前記第一室の外面に立設された上壁第一室側リブと、前記上壁本体のうち前記第二室の外面に立設された上壁第二室側リブとを有し、
前記底壁は、前記周壁の下端及び前記隔壁の下端に接続される底壁本体と、この底壁本体の外面のうち当該底壁本体の内面と前記隔壁の下端との接続部の裏側に位置する部位から外側に向かって突出する形状の底壁突出部と、前記底壁本体のうち前記第一室の外面に立設された底壁第一室側リブと、前記底壁本体のうち前記第二室の外面に立設された底壁第二室側リブとを有し、
前記上壁第一室側リブ及び前記上壁第二室側リブは、それぞれ前記上壁突出部につながる形状を有し、
前記底壁第一室側リブ及び前記底壁第二室側リブは、それぞれ前記底壁突出部につながる形状を有する圧力容器。
A pressure vessel having a container main body containing high-pressure gas, and a partition wall formed in the container main body so as to bisect the inside of the container main body into a first chamber and a second chamber,
The container body connects an upper wall connected to the upper end of the partition wall, a bottom wall facing the upper wall and connected to the lower end of the partition wall, and a peripheral edge of the upper wall and a peripheral edge of the bottom wall. And a peripheral wall
The upper wall is located on the back side of a connection portion between the inner surface of the upper wall body and the upper end of the partition wall, of the upper wall body connected to the upper end of the peripheral wall and the upper end of the partition wall. An upper wall projecting portion having a shape projecting outward from a portion to be formed, an upper wall first chamber side rib erected on an outer surface of the first chamber among the upper wall main body, and the upper wall main body of the upper wall main body An upper wall second chamber side rib standing on the outer surface of the second chamber;
The bottom wall is located on the back side of a connecting portion between a bottom wall body connected to a lower end of the peripheral wall and a lower end of the partition wall, and an outer surface of the bottom wall body and an inner surface of the bottom wall body and the lower end of the partition wall A bottom wall protrusion having a shape protruding outward from a portion to be formed, a bottom wall first chamber side rib erected on the outer surface of the first chamber of the bottom wall body, and the bottom wall body of the bottom wall body A bottom wall second chamber side rib standing on the outer surface of the second chamber;
The upper wall first chamber side rib and the upper wall second chamber side rib each have a shape connected to the upper wall protrusion,
The bottom wall first chamber side rib and the bottom wall second chamber side rib are pressure vessels each having a shape connected to the bottom wall protrusion.
請求項1に記載の圧力容器であって、
前記上壁第一室側リブ及び前記上壁第二室側リブは、前記上壁突出部の上側で互いにつながるとともに当該上壁突出部の上面とつながる形状を有する圧力容器。
The pressure vessel according to claim 1,
The pressure vessel having a shape in which the upper wall first chamber side rib and the upper wall second chamber side rib are connected to each other on the upper side of the upper wall protrusion and to the upper surface of the upper wall protrusion.
請求項1又は2に記載の圧力容器であって、
前記容器本体は、前記周壁のうち前記隔壁と対向する隔壁対向部と前記上壁本体との境界を補強する上側補強部と、前記隔壁対向部と前記底壁本体との境界を補強する下側補強部とをさらに有する圧力容器。
The pressure vessel according to claim 1 or 2,
The container body includes an upper reinforcing portion that reinforces a boundary between the partition wall facing portion that faces the partition wall and the upper wall body, and a lower side that reinforces a boundary between the partition wall facing portion and the bottom wall body. A pressure vessel further comprising a reinforcing portion.
請求項1ないし3のいずれか1項に記載の圧力容器において、
前記隔壁は、一方向に長い形状を有し、当該隔壁の長手方向の中央を含む領域に位置する第一壁の厚さよりも、前記長手方向の一端側に位置する第二壁の厚さ及び前記長手方向の他端側に位置する第三壁の厚さの方が小さい圧力容器。
The pressure vessel according to any one of claims 1 to 3,
The partition wall has a shape that is long in one direction, and the thickness of the second wall located on one end side in the longitudinal direction rather than the thickness of the first wall located in the region including the center in the longitudinal direction of the partition wall; A pressure vessel in which the thickness of the third wall located on the other end side in the longitudinal direction is smaller.
JP2012138775A 2012-06-20 2012-06-20 Pressure vessel Active JP5750407B2 (en)

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JP2012138775A JP5750407B2 (en) 2012-06-20 2012-06-20 Pressure vessel
CN201380032207.0A CN104395651B (en) 2012-06-20 2013-06-13 Pressurized container
US14/397,277 US9476545B2 (en) 2012-06-20 2013-06-13 Pressure vessel
PCT/JP2013/003722 WO2013190807A1 (en) 2012-06-20 2013-06-13 Pressure vessel

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