JP4332475B2 - Pressure vessel - Google Patents

Description

  For example, in the automobile industry, the housing industry, the military industry, the aerospace industry, the medical industry, etc., the present invention is applied to a pressure vessel that stores hydrogen gas or natural gas that is a fuel for power generation, or a pressure vessel that stores oxygen gas. It relates to the pressure vessel used.

  In this specification and claims, the term “aluminum” includes aluminum alloys in addition to pure aluminum. In this specification and claims, the top, bottom, left and right in FIGS. 3, 12, and 14 are referred to as top and bottom and left and right, respectively.

  In recent years, natural gas vehicles with clean exhaust gas and fuel cell vehicles have been developed as countermeasures against air pollution caused by vehicle exhaust gases. These automobiles are equipped with pressure vessels filled with natural gas or hydrogen gas as fuel.

  Conventionally, as such a pressure vessel liner, a cylindrical body and an end plate closing both ends of the body are formed, and a first body made of an aluminum extruded shape made of a cylindrical body having both ends opened and constituting the body. It is formed by a liner constituting member and two aluminum die cast second liner constituting members which are substantially bowl-shaped and welded to both end portions of the first liner constituting member to constitute an end plate, on the inner surface of the first liner constituting member A plurality of reinforcing walls having a radial cross section are integrally formed, and a reinforcing wall is integrally formed at a position corresponding to the reinforcing wall of the first liner constituent member on the inner surface of the second liner constituent member. (For example, refer to Patent Document 1).

  The pressure vessel liner includes a helically wound fiber reinforced resin layer formed by winding reinforcing fibers on both the second liner constituent members in the length direction of the first liner constituent members and impregnating and fixing with an epoxy resin. A hoop-wrapped fiber reinforced resin layer formed by winding fibers around the first liner constituting member in the circumferential direction and impregnating and fixing with an epoxy resin is provided and used as a pressure vessel.

  According to the liner for a pressure vessel described in Patent Document 1, the pressure strength against the radial force is sufficient due to the function of the reinforcing wall.

By the way, in the automobile, the capacity of the pressure vessel is required to be increased for the purpose of extending the cruising distance. In order to increase the capacity of the pressure vessel using the pressure vessel liner described in Patent Document 1, it is only necessary to increase the length of the trunk while increasing the diameter of the barrel. Therefore, since there is a limit to increasing the length of the cylinder, it is necessary to cope with an increase in the capacity of the pressure vessel by increasing the diameter of the cylinder. However, when the diameter of the trunk is increased, a vacant space existing in the automobile cannot be used effectively, and there is a problem that a useless space is generated in a vehicle-mounted state and the comfort of the passenger compartment is lowered. In addition, when the diameter of the trunk is increased, the vehicle height needs to be increased, and there is a problem that it cannot be used for a vehicle having a low vehicle height such as a sedan type.
Japanese Patent Laid-Open No. 9-42595

  An object of the present invention is to provide a pressure vessel that can solve the above-described problems and can be installed without generating a useless space and can have a large capacity.

  In order to achieve the above object, the present invention comprises the following aspects.

1) It is constituted by arranging and integrating a plurality of container constituents composed of a non-cylindrical liner having an opening at one end and a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner, and all container constituents And a liner that forms a closed space by the liners of all the container components, and has a mouth that allows the closed space to communicate with the outside .
At least two adjacent container components are arranged such that the open ends of the liners are on the same side, and the dome-shaped communication member bulges outward across the open ends of the liners of these container components Are fixed so that the interiors of these liners communicate with each other and the liner opening is closed, and the liners of at least two adjacent container structures are arranged so that the open ends of the liners are on the same side. A pressure vessel in which an end plate is fixedly provided across the opening end of the dome, and the peripheral edge of the dome-shaped communication member is joined to the peripheral edge of the end plate .

2) The pressure vessel as described in 1) above , wherein the end plate is formed by joining outward flanges integrally formed at the opening end of the liner .

3) The pressure vessel according to 2) above, wherein the liner and the outward flange are made of aluminum, and the outward flanges are friction stir welded .

4) The above description 1), wherein the end plate is made of a single plate having a through hole into which the open end of the liner is fitted, and the peripheral portion of the through hole in the plate is joined to the open end of the liner. Pressure vessel.

5) The pressure vessel according to 4) above, wherein the liner and the plate are made of aluminum, and the liner and the plate are friction stir welded .

6) The pressure vessel according to any one of 1) to 5) above, wherein the dome-shaped communication member and the end plate are made of aluminum, and the dome-shaped communication member and the end plate are friction stir welded .

7) It is configured by arranging and integrating a plurality of container constituents composed of a non-cylindrical liner having at least one end opened and a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner, and all container constituents And a liner that forms a closed space by the liners of all the container components, and has a mouth that allows the closed space to communicate with the outside.
At least two adjacent container components are arranged such that the open ends of the liners are on the same side, and the dome-shaped communication member bulges outward across the open ends of the liners of these container components Are fixed so that the interiors of these liners communicate with each other and the liner opening is closed, and the liners of at least two adjacent container structures are arranged so that the open ends of the liners are on the same side. A plate-like connecting member having a notch into which the opening end portions of the liners on both sides are fitted is disposed between the opening end portions, and the peripheral portion of the notch in the connecting member and the opening end portion of the liner are joined, A pressure vessel in which a peripheral portion of a dome-shaped communication member is joined to an opening end of a connecting member and a liner .

8) The pressure vessel according to 7) above, wherein the liner and the connecting member are made of aluminum, and the liner and the connecting member are friction stir welded .

9) The pressure vessel according to 7) or 8) above, wherein the dome-shaped communication member, the connecting member, and the liner are made of aluminum, and the dome-shaped communication member, the liner, and the connecting member are friction stir welded .

10) The outer portion of the peripheral wall of the liner of the container structure located at both left and right ends is rounded so that the central portion protrudes outward in the cross section, as described in any one of 1) to 9) above Pressure vessel.

11) The pressure vessel according to any one of the above 1) to 10) , wherein the adjacent portions of the peripheral walls of the liners of the two adjacent vessel components are linearly parallel to each other in cross section .

12) The pressure vessel according to any one of the above 1) to 11), wherein the width in the left-right direction in the cross-section of the liner peripheral wall of each vessel component is smaller than the height in the vertical direction .

13) The dome-shaped communication that the both ends of the liner are open and the lengths of the liners of all the container components are the same, and bulges outward across the both ends of the liners of all the container components. 13. The pressure vessel according to any one of 1) to 12), wherein a member is fixed and a mouth portion is provided in one of the dome-shaped communication members .

14) The pressure vessel according to any one of 1) to 13) above, wherein the liner length of at least one of the vessel components is different .

15) The pressure vessel according to any one of 1) to 14) above, wherein a secondary fiber reinforced resin layer is formed so as to straddle all vessel components .

16) An in-plane wound fiber layer in which the secondary fiber reinforced resin layer winds the reinforcing fiber in parallel to the length direction of the liner, and a helical winding in which the reinforcing fiber is wound so as to be inclined with respect to the length direction of the liner. 15. The pressure vessel according to 15) above, comprising a fiber layer and a hoop-wrapped fiber layer in which reinforcing fibers are wound in a direction perpendicular to the length direction of all liners, and a resin impregnated in each fiber layer and cured .

17) A fuel hydrogen pressure vessel, a fuel cell, and a pressure pipe for sending fuel hydrogen gas from the fuel hydrogen pressure vessel to the fuel cell are provided, and the fuel hydrogen pressure vessel is one of the above 1) to 16) A fuel cell system comprising the pressure vessel described in 1 .

18) A fuel cell vehicle equipped with the fuel cell system according to 17 ) above .

19) A cogeneration system comprising the fuel cell system according to 17 ) above .

20) a natural gas pressure vessel and a natural gas pressure vessel for supplying natural gas from the natural gas pressure vessel, the natural gas pressure vessel comprising the pressure vessel according to any one of 1) to 16) above Gas supply system .

21) A cogeneration system comprising the natural gas supply system according to 20 ) above, a generator, and a generator driving device .

22) A natural gas vehicle comprising the natural gas supply system according to 20 ) above and an engine using natural gas as fuel .

23) An oxygen gas supply system comprising an oxygen pressure vessel and a pressure pipe for sending oxygen gas from the oxygen pressure vessel, the oxygen pressure vessel comprising the pressure vessel according to any one of 1) to 16) above .

According to the pressure vessel of the above 1) and 7), a plurality of vessel components comprising a non-cylindrical liner having at least one end opened and a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner are arranged and integrated. And the inside of the liners of all the container constituents communicate with each other, and one closed space is formed by the liners of all the container constituents, and one mouth portion that communicates the closed space to the outside. Since the size of the cross section of each container structure, the cross-sectional shape of the liner peripheral wall, the length, and how to arrange all the container structures are appropriately set according to the device to be installed, for example, an empty space of an automobile By changing, it can be installed without causing a useless space, and the capacity can be increased. Moreover, since the peripheral wall outer peripheral surface of the liner of each container structure is covered with the fiber reinforced resin layer, the pressure resistance is also excellent. Further, since only one port is provided, only one valve is used, and the cost is reduced .

According to the pressure vessel of the above 1) , one closed space can be formed relatively easily by the liners of all the vessel components.

Furthermore, according to the pressure vessel of 1) above , the dome-shaped communication member can be fixed relatively easily across the open end portions of the liners of at least two adjacent container components.

According to the pressure vessel of 2) , the end plate can be formed relatively easily.

According to the pressure vessel of 3), the outward flanges can be firmly joined to each other.

According to the pressure vessel of 4) , the end plate can be formed relatively easily.

According to the pressure vessel of 5) above , the liner and the plate can be firmly joined.

According to the pressure vessel of 6) above , the dome-shaped communication member and the end plate can be firmly joined.

According to the pressure vessel of 7) above , the dome-shaped communication member can be fixed relatively easily across the open end portions of the liners of at least two adjacent container constituents.

According to the pressure vessel of 8) above , the liner and the connecting member can be firmly joined.

According to the pressure container of 9) , the dome-shaped communication member, the liner, and the connecting member can be firmly joined.

According to the pressure vessel of 10) above, the outer part of the peripheral wall of the liner of the container structure located at both ends in the alignment direction is rounded so that the central part protrudes outward in the cross section. Excellent in properties .

According to the pressure vessel of the above 11), the portions adjacent to each other on the peripheral walls of the liners of the adjacent container constituents are straight lines parallel to each other in the cross section, so that when the internal pressure of each liner becomes high However, the linear portions of the liners of the adjacent container constituents hit each other. Therefore, the internal pressure acting on the linear portion is canceled out, and the pressure resistance is improved .

According to the pressure vessel of the above 12), since the width in the left-right direction in the cross section of the liner peripheral wall of each container component is smaller than the height in the vertical direction, it is possible to suppress the vertical deformation of the liner. The pressure resistance of the liner is improved .

  Embodiments of the present invention will be described below with reference to the drawings. Throughout the drawings, the same parts and the same parts are denoted by the same reference numerals, and redundant description is omitted.

  In the following description, the left side of FIGS. 2, 10, 11 and 13 is referred to as the front, and the right side is referred to as the rear.

Embodiment 1
This embodiment is shown in FIGS. 1 to 3 show a pressure vessel, and FIGS. 4 to 6 show a method for manufacturing the pressure vessel. FIG. 7 shows a correspondence example when further pressure resistance is required.

  1 to 3, the pressure vessel (1) is a fiber covering the outer peripheral surfaces of the aluminum non-cylindrical liners (3A) (3B) and liners (3A) (3B) that extend in the front-rear direction and open at both ends. A container structure (2A) (2A) (which is composed of a reinforced resin layer (4) and arranged in a plurality of rows in the left-right direction such that the center lines of the liners (3A) and (3B) are located in the same horizontal plane. 2B), aluminum end plates (5) provided in a fixed manner across the front and rear ends of the liners (3A) (3B) of all container components (2A) (2B), and each end plate ( 5) and is connected to the inside of the liners (3A) (3B) of all the container components (2A) (2B) and closes the front and rear end openings of all the liners (3A) (3B). And an aluminum dome-shaped communication member (6) bulging in the direction. One closed space is formed by the liners (3A) and (3B) of all the container structures (2A) and (2B), and one communicating member (6) allows one closed portion to communicate the closed space to the outside ( 7) is provided.

  The lengths of the liners (3A) and (3B) of all the container structures (2A) and (2B) are equal, and both the front and rear ends thereof are arranged in the same vertical plane. The left and right outer portions of the peripheral wall of the liner (3A) in the container structure (2A) at both left and right ends are rounded so that the center in the vertical direction protrudes outward in the left and right direction in the cross section. ) Has a substantially semi-elliptical shape obtained by cutting an ellipse along the minor axis. The width in the left-right direction in the cross section of the peripheral wall of the liner (3A) is smaller than the height in the up-down direction. The cross-sectional shape of the peripheral wall in the other container structure (2B) excluding the container structures (2A) at the left and right ends is a vertical rectangle with rounded corners. The width in the left-right direction in the cross section of the peripheral wall of the liner (3B) is smaller than the height in the up-down direction. The adjacent portions of the peripheral walls of the liners (3A) and (3B) of the two adjacent container structures (2A) and (2B) are linearly extending in the vertical direction parallel to each other in the cross section.

  Outward flanges (8A) (8B) are integrally formed at both ends of each liner (3A) (3B). The outward flange (8A) of the liner (3A) in the container structure (2A) at the left and right ends is slightly larger than the cross section of the liner (3A) peripheral wall and has a shape similar to the cross section of the liner (3A) peripheral wall. It has become. Further, the outward flange (8B) of the other liner (3B) is a vertical rectangle that is slightly larger than the cross section of the peripheral wall of the liner (3B) and similar to the cross section of the peripheral wall of the liner (3B). The height of the outward flanges (8A) (8B) of all the liners (3A) (3B) is equal.

  The fiber reinforced resin layer (4) is formed by impregnating and curing a resin in a hoop wound fiber layer wound in the circumferential direction so as to be substantially perpendicular to the length direction of the liner (3A) (3B). Yes, and covers the entire outer peripheral surface of the peripheral wall of each liner (3A) (3B) except for the portions of the outward flanges (8A) (8B). As the fiber, for example, carbon fiber, glass fiber, aramid fiber and the like are used, and it is preferable to use carbon fiber. For example, an epoxy resin is used as the resin.

  Then, the outward flanges (8A) and (8B) of the adjacent liners (3A) and (3B) are joined from the outside in the longitudinal direction of the liners (3A) and (3B) by an appropriate method, here the friction stir welding method. All container components (2A) (2B) are integrated, and the end plate (5) straddling both ends of the liner (3A) (3B) is fixed by all outward flanges (8A) (8B) It is provided in the shape. The joint bead between the outward flanges (8A) and (8B) is indicated by (9). Note that the method of joining the outward flanges (8A) and (8B) is not limited to the friction stir welding method.

  The dome-shaped communication member (6) is formed by forging, die casting, or cutting, and has an outer shape that is the same shape and size as the outer shape of the end plate (5). A through hole (7a) is formed from the outer end of the mouth portion (7) formed in one communication member (6), and a control valve, for example, is attached to the inner peripheral surface of the through hole (7a). A female screw (7b) used for this is formed. The communication member (6) is joined to the end plate (5) from the outer peripheral side by an appropriate method, here the friction stir welding method, with the end face of the peripheral wall in close contact with the peripheral edge of the front and rear outer surface of the end plate (5). Has been. A joint bead between the communication member (6) and the end plate (5) is indicated by (10). The method for joining the communication member (6) and the end plate (5) is not limited to the friction stir welding method.

  The liners (3A) (3B) and the communicating members (6) are each formed of any one of, for example, JIS A2000 alloy, JIS A5000 alloy, JIS A6000 alloy, and JIS A7000 alloy. All the liners (3A) (3B) and the two communicating members (6) may be made of the same material, or at least one of them may be made of different materials.

  The pressure vessel (1) is manufactured by the method described below.

  First, the container structures (2A) and (2B) are manufactured by the method shown in FIGS. 4 shows a method of manufacturing the container structure (2A) located at one end in the left-right direction (alignment direction), and FIG. 5 manufactures the container structure (2B) located in the middle in the left-right direction. The method is shown.

  That is, a through-hole having a cross-sectional outer shape that is the same shape and size as the outer flanges (8A) and (8B) and a cross-sectional shape that is similar to the outer flanges (8A) and (8B). Aluminum hollow extruded sections (15A) and (15B) having 16A and (16B) are formed (see FIGS. 4 (a) and 5 (a)). Next, by cutting the outer peripheral surface of the hollow extruded shape (15A) (15B) except for both ends thereof, a non-cylindrical liner (3A) (3B) and liner (3A) (3B ) Are formed at the same time with outward flanges 8A and 8B at both ends (see FIGS. 4B and 5B). Next, a bundle of reinforcing fibers impregnated with resin by the filament winding method or a bundle of reinforcing fibers impregnated with resin on the outer periphery of the liner (3A) (3B) is almost orthogonal to the length direction of the liner (3A) (3B). After forming the hoop-wrapped fiber layer by winding in the circumferential direction as described above, the resin is cured to form the fiber reinforced resin layer (4), thereby producing the container structures (2A) and (2B) (FIG. 4). (See (c) and FIG. 5 (c)).

  Further, two dome-shaped communicating members (6) are manufactured by forging, die casting or cutting. One communication member (6) is formed with a mouth (7).

  Next, all the container components (2A) and (2B) are arranged in parallel so that the center line thereof is located in the same horizontal plane and the front and rear ends thereof are located in the same vertical plane, and adjacent container components (2A ) The side edges of the outward flanges (8A) and (8B) of (2B) are brought into contact with each other. The end plates (5A, 8B) of the adjacent container components (2A), (2B) are joined by friction stir welding from the outside in the length direction of the liners (3A), (3B). ) Are fixedly provided (see FIG. 6).

  After that, the communication member (6) and the end plate (5) are rubbed from the outer peripheral side in a state where the peripheral wall end faces of both the communication members (6) are in contact with the peripheral edges of the front and rear outer surfaces of both end plates (5). Stir welding.

  Thus, the pressure vessel (1) is manufactured.

  When further pressure resistance is required for the pressure vessel (1), as shown in FIG. 7, the secondary fiber reinforced resin layer (20) is formed so as to straddle all vessel components (2A) (2B). Is done.

  The secondary fiber reinforced resin layer (20) is formed by wrapping the reinforcing fibers so as to be almost orthogonal to the length direction of the liners (3A) (3B) so as to connect all the container components (2A) (2B). A hoop-wrapped fiber reinforced resin layer (21) in which a resin is impregnated and cured in a hoop-wrapped fiber layer, and a helically wound fiber layer in which reinforcing fibers are wound so as to be inclined with respect to the length direction of the liner (3A) (3B) The resin was impregnated and cured on the helically wound fiber reinforced resin layer (23) impregnated and cured with resin and the in-plane wound fiber layer formed by winding the reinforcing fiber in parallel with the length direction of the liner (3A) (3B). It consists of an in-plane wound fiber reinforced resin layer (22). As the fibers constituting the fiber reinforced resin layers (21), (22), and (23), for example, carbon fibers, glass fibers, aramid fibers, and the like are used, and carbon fibers are preferably used. In addition, as a resin constituting each of the fiber reinforced resin layers (21), (22), and (23), for example, an epoxy resin is used. Each fiber reinforced resin layer (21) (22) (23) is formed by winding a reinforcing fiber impregnated with resin by a filament winding method or a bundle of reinforcing fibers impregnated with resin and then curing the resin. Is done.

  In Embodiment 1, the liners (3A) (3B) and the outward flanges (8A) (8B) are integrally formed by cutting the hollow extruded profiles (15A) (15B). Instead, the liners (3A) (3B) and the outward flanges (8A) (8B) may be integrally formed by die casting.

  Further, in the first embodiment, the liners (3A) and (3B) are made of aluminum, but instead of this, a resin one may be used. When the resin liners (3A) and (3B) are used, the outward flanges (8A) and (8B) may be integrally formed of resin. In this case, the outward flanges (8A) and (8B) are joined together by welding or adhesion to form an end plate (5), and a resin member is used as the communication member (6) to form an end plate (5). Joined by welding or gluing. Even when resin liners (3A) (3B) are used, the outer flanges (8A) (8B) may be made of aluminum separate from the liners (3A) (3B). is there. In this case, for example, the liner (3A) (3B) and the outward flange (8A) (8B) are integrated by injection molding the liner (3A) (3B) using the outward flange (8A) (8B) as an insert. It becomes. In this case, the joining of the outward flanges (8A) and (8B) and the joining of the communication member (6) and the end plate (5) are performed in the same manner as in the first embodiment.

Embodiment 2
This embodiment is shown in FIG.

  In the case of the pressure vessel of this embodiment, each end plate (5) is a single metal plate having through holes (31A) and (31B) into which both end portions of the liners (3A) and (3B) are fitted, here an aluminum plate. (30). Then, both end portions of each liner (3A) (3B) are fitted into the through holes (31A) (31B) of the aluminum plate (30), respectively, and the through holes (31A) (31B) of the aluminum plate (30) are inserted. The peripheral portion and the open end of the liner (3A) (3B) are joined from the outside in the length direction of the liner (3A) (3B) by an appropriate method such as friction stir welding. It should be noted that the fiber reinforced resin layer (4) is not formed in the portions fitted into the through holes (31A) (31B) of the aluminum plate (30) at both ends of the liners (3A) (3B). The method of joining the aluminum plate (30) and the liners (3A) (3B) is not limited to the friction stir welding method.

  The aluminum plate (30) is made of, for example, any one of JIS A2000 alloy, JIS A5000 alloy, JIS A6000 alloy, and JIS A7000 alloy.

  Other configurations are the same as those of the pressure vessel (1) of the first embodiment. When further pressure resistance is required, all the vessel components (2A) and (2B) are provided as in the case of the first embodiment. A secondary fiber reinforced resin layer (20) is formed to straddle.

  In the second embodiment, the liners (3A) and (3B) are made of aluminum. However, instead of this, a resin-made one may be used. When the resin liners (3A) (3B) are used, all the liners (3A) (3B) and the end plate (5) may be integrally formed of resin. In this case, the communication member (6) is also made of resin and joined to the end plate (5) by welding or adhesion. Even when the resin liners (3A) (3B) are used, the end plates (5) may be made of aluminum that is separate from the liners (3A) (3B). In this case, for example, the liners (3A) (3B) and the end plate (5) are integrated by simultaneously injection-molding all the liners (3A) (3B) using the end plate (5) as an insert. In this case, the connecting member (6) and the end plate (5) are joined in the same manner as in the first embodiment.

Embodiment 3
This embodiment is shown in FIG.

  In the case of the pressure vessel of this embodiment, the end plate (5) is not used, and both end portions of the liner (3A) (3B) of the adjacent vessel structure (2A) (2B) are made of metal, here They are connected and integrated through an aluminum plate-like connecting member (35). That is, on both sides of the connecting member (35), a notch (36) is formed in which a part of each of the two adjacent liners (3A) (3B) at the front and rear ends is fitted. Then, the front and rear ends of the liner (3A) (3B) are fitted into the notch (36) of the connecting member (35), and the portion around the notch (36) in the connecting member (35) and the liner (3A ) (3B) are joined from the outside in the longitudinal direction of the liner (3A) (3B) by an appropriate method, for example, a friction stir welding method. In addition, the fiber reinforced resin layer (4) is not formed in the part fitted in the notch (36) of the connection member (35) in the both ends of the liner (3A) (3B). The method of joining the connecting member (35) and the liners (3A) (3B) is not limited to the friction stir welding method.

  The dome-shaped communication member (6) has the same outer shape as the outer shape of the combination of all the liners (3A) (3B) and the connecting member (35). The communication member (6) is in an appropriate manner, for example, friction stirrer, with the peripheral wall end face being in contact with the peripheral edge of the end face of all the liners (3A) (3B) and the connecting member (35). It is joined from the outer peripheral side by a joining method. The method of joining the communicating member (6) to the liners (3A) (3B) and the connecting member (35) is not limited to the friction stir welding method.

  The connecting member (35) is made of, for example, any one of JIS A2000 alloy, JIS A5000 alloy, JIS A6000 alloy, and JIS A7000 alloy.

  Other configurations are the same as those of the pressure vessel (1) of the first embodiment. When further pressure resistance is required, all the vessel components (2A) and (2B) are provided as in the case of the first embodiment. A secondary fiber reinforced resin layer (20) is formed to straddle.

  In Embodiment 3 described above, the liners (3A) and (3B) are made of aluminum, but instead of this, a resin-made one may be used. When the resin liners (3A) (3B) are used, the connecting member (35) may be formed integrally with all the liners (3A) (3B). In this case, the communicating member (6) is also made of resin, and is joined to the connecting member (35) and the liners (3A) (3B) by welding or adhesion. Even when the resin liners (3A) (3B) are used, the connecting member (35) may be made of aluminum separate from the liners (3A) (3B). In this case, for example, the liners (3A) (3B) and the connecting member (35) are integrated by injection molding all the liners (3A) (3B) using the connecting member (35) as an insert. In this case, the connecting member (6), the liners (3A) (3B), and the connecting member (35) are joined by an appropriate method, for example, adhesion.

  In the first to third embodiments, the number of the container structures (2B) in the middle in the left-right direction (alignment direction) excluding the container structures (2A) at both left and right ends can be changed as appropriate.

  FIG. 10 shows a modification of the pressure vessel in the case where a plurality of the container structures (2A) and (2B) are arranged in three or more rows in the left-right direction. In FIG. 10, the upper side is left and the lower side is right.

  In FIG. 10, the cross-sectional shape of the peripheral wall of the liner (3A) of the container structure (2A) located at the left and right ends and the crossing of the peripheral wall of the liner (3B) of the container structure (2B) located in the middle in the arrangement direction. The surface shape is the same as in the first to third embodiments. In FIG. 10, the fiber reinforced resin layer is not shown.

  In the case of the pressure vessel (40) shown in FIG. 10 (a), the lengths of all the liners (3A) (3B) are the same, and all the liners (3A) (3B) are located in the same vertical plane. Are arranged like so. The front end portions of all the liners (3A) and (3B) are connected and integrated using the end plate (5) of the first and second embodiments or the connecting member (35) of the third embodiment. Using (5) or the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the front ends of all the liners (3A) (3B), The interiors of the liners (3A) (3B) are communicated with each other, and the front end openings of all the liners (3A) (3B) are closed.

  The rear ends of two adjacent liners (3A) and (3B) on the right side are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3. Using the end plate (5) or the connecting member (35), the dome-shaped communication member (6) is joined so as to straddle the rear ends of both liners (3A) (3B), and both liners (3A) ( The insides of 3B) are communicated with each other and the rear end openings of both liners (3A) and (3B) are closed. A closing member (41A) is joined to the rear end of the left end liner (3A) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the rear end opening of the liner (3A) is opened by the closing member (41A). Is closed. The liner (3A) and the closing member (41A) may be integrally formed by forging.

  The mouth portion (7) may be formed in the rear communication member (6) or the closing member (41A) instead of the front communication member (6).

  In the case of the pressure vessel shown in FIG. 10 (a), the outer shape of the rear end plate (5) and the outer shape of the rear communication member (6) are arranged on the outward flange (8A) of the liner (3A) at one end. The shape is such that the outward flange (8B) of the intermediate liner (3B) is added.

  In the case of the pressure vessel (42) shown in FIG. 10 (b), the lengths of all the liners (3A) (3B) are equal, and all the liners (3A) (3B) are located in the same vertical plane. Are arranged like so. The front end portions of all the liners (3A) and (3B) are connected and integrated using the end plate (5) of the first and second embodiments or the connecting member (35) of the third embodiment. Using (5) or the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the front ends of all the liners (3A) (3B), The interiors of the liners (3A) (3B) are communicated with each other, and the front end openings of all the liners (3A) (3B) are closed.

  Closing members (41A) (41B) are joined to the rear ends of the respective liners (3A) (3B) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the closing members (41A) (41B) The rear end opening of each liner (3A) (3B) is closed. The liners (3A) (3B) and the closing members (41A) (41B) may be integrally formed by forging.

  Further, the mouth portion (7) may be formed in any one of the closing members (41A) (41B) instead of the communication member (6).

  In the case of the pressure vessel (43) shown in FIG. 10 (c), the lengths of all the liners (3A) (3B) are different, and the front ends of all the liners (3A) (3B) are in the same vertical plane. It is arranged so that it is located. The front end portions of all the liners (3A) and (3B) are connected and integrated using the end plate (5) of the first and second embodiments or the connecting member (35) of the third embodiment. Using (5) or the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the front ends of all the liners (3A) (3B), The interiors of the liners (3A) (3B) are communicated with each other, and the front end openings of all the liners (3A) (3B) are closed.

  Closing members (41A) (41B) are joined to the rear ends of the respective liners (3A) (3B) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the closing members (41A) (41B) The rear end opening of each liner (3A) (3B) is closed. The liners (3A) (3B) and the closing members (41A) (41B) may be integrally formed by forging.

  Further, the mouth portion (7) may be formed in any one of the closing members (41A) (41B) instead of the communication member (6).

  In the case of the pressure vessel (44) shown in FIG. 10 (d), the front ends of the two adjacent liners (3A) (3B) on the right side are located in the same vertical plane, and the two adjacent liners (3A) on the left side They are arranged so that the rear ends of (3B) are located in the same vertical plane. The front end portions of the two right liners (3A) (3B) and the rear end portions of the two left liners (3A) (3B) are connected to the end plate (5) or the third embodiment of the first and second embodiments. Are connected and integrated using the end plate (5) or the connecting member (35) so as to straddle the ends of two adjacent liners (3A) (3B). The dome-shaped communication member (6) is joined, the interiors of these liners (3A) (3B) are communicated with each other, the front end opening of the two adjacent liners on the right side (3A) (3B) and the left side are adjacent The rear end openings of the two liners (3A) (3B) are closed.

  Further, a closing member (41A) is joined from the outer peripheral side by an appropriate method, for example, a friction stir welding method, to the rear end portion of the right end liner (3A) and the front end portion of the left end liner (3A), The opening of the end of the liner (3A) opposite to the communication member (6) is closed by the closing member (41A). The liner (3A) and the closing member (41A) may be integrally formed by forging. A mouth portion (7) is formed in the closing member (41A) of the leftmost liner (3A).

  The mouth (7) is formed in the closing member (41A) of the right end liner (3A) or any one of the communication members (6) instead of the closing member (41A) of the left end liner (3A). May be.

  In the case of the pressure vessel shown in FIG. 10 (d), the outer shape of the end plate (5) and the outer shape of the communicating member (6) are arranged on the outer flange (8A) of the liner (3A) at one end and the liner at the intermediate portion. (3B) outward flange (8B) is added.

  In the case of the pressure vessel (45) shown in FIG. 10 (e), two liners (3A) having the same length are arranged so that both front and rear ends are located in the same vertical plane with a space in the left-right direction. Between the liners (3A), two short liners (3B) are arranged on the same straight line extending in the front-rear direction. The front end of one short liner (3B) is located in the same vertical plane as the front ends of the two long liners (3A), and the front end portions of these three liners (3A) (3B) are the same as in the first embodiment. The dome having the mouth portion (7) using the end plate (5) or the connecting member (35). The connecting members (6) are joined so as to straddle the front ends of all the liners (3A) (3B), and the interiors of the three liners (3A) (3B) are communicated with each other and the three liners (3A) ( The front end opening of 3B) is closed. The rear end of the other short liner (3B) is located in the same vertical plane as the rear ends of the two long liners (3A), and the rear ends of these three liners (3A) (3B) It is connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, and a dome-shaped communication member (using the end plate (5) or connecting member (35)). 6) is joined so as to straddle the rear ends of all the liners (3A) (3B), the interiors of the three liners (3A) (3B) are communicated with each other, and the three liners (3A) (3B) The rear end opening is closed.

  In addition, a closing member (41B) is joined to an end of the two short liners (3B) opposite to the communicating member (6) by an appropriate method, for example, a friction stir welding method, and the closing member (41B) Thus, the opening on the end side of the liner (3B) is closed. Note that the short liner (3B) and the closing member (41B) may be integrally formed by forging.

  The mouth portion (7) may be formed in the front communication member (6) or any one of the closing members (41B) instead of the rear communication member (6).

Embodiment 4
This embodiment is shown in FIG. 11 and FIG. In addition, in FIG. 11 and FIG. 12, illustration of the fiber reinforced resin layer is omitted.

  11 and 12, the pressure vessel (50) includes an aluminum non-cylindrical liner (3A) that extends in the front-rear direction and opens at both ends, and a fiber-reinforced resin layer (4) that covers the outer peripheral surface of the peripheral wall of the liner (3A). And two container structures (2A) arranged in two rows in the left-right direction so that the center line of the liner (3A) is located in the same horizontal plane. That is, in the pressure vessel (50), the container structure (2A) is obtained by omitting the intermediate container structure (2B) from the pressure container (1) of Embodiment 1, and the liners (2A) of both container structures (2A). 3A) The peripheral walls are arranged so that the linear sections of the cross section are close to each other.

  The front and rear ends of the liner (3A) of both container components (2A) are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3. Using the end plate (5) or connecting member (35), the dome-shaped communicating member (6) is joined so as to straddle the front and rear ends of both liners (3A), and the interior of both liners (3A) is connected. The front and rear end openings of both liners (3A) are closed while communicating. Then, a mouth portion (7) is formed in one communication member (6). Note that the shapes of the end plate and the connecting member are adapted to the cross-sectional shape of both liners (3A).

  The shapes of the end plate (5) and the connecting member (35) are adapted to the cross-sectional shape of both liners (3A). That is, the outer shape of the communication member (6) is a shape as shown by a chain line in FIG. 12, and the shape of the end plate (5) or the connecting member (35) is also corresponding to this.

  In the pressure vessel (50) of the fourth embodiment, the communication member (6) is not joined across the liners (3A) at either one end of the liners (3A), and each of the liners (3A) has a closing member ( 41A) may be integrally formed by bonding or forging.

  FIG. 13 shows a modification of the pressure vessel when a plurality of vessel structures (2A) are arranged in two rows in the left-right direction. In FIG. 13, the upper side is left and the lower side is right.

  In addition, in FIG. 13, the cross-sectional shape of the liner (3A) peripheral wall of both container structural bodies (2A) is the same as that of the fourth embodiment. In FIG. 12, the fiber reinforced resin layer is not shown.

  In the case of the pressure vessel (51) shown in FIG. 13, two short liners (3A) are disposed on the same straight line extending in the front-rear direction on the left side of one liner (3A). The front end of one short liner (3A) is located in the same vertical plane as the front end of the long liner (3A), and the front end portions of these two liners (3A) are the same as in the fourth embodiment. Connected and integrated, the dome-shaped communication member (6) having the mouth portion (7) using the end plate (5) or the connection member (35) straddles the front end portions of two adjacent liners (3A). The two liners (3A) are communicated with each other and the front end openings of the two liners (3A) are closed. The rear end of the other short liner (3A) is located in the same vertical plane as the rear end of the long liner (3A), and the rear ends of these two liners (3A) are the same as in the case of the fourth embodiment. It is connected and integrated in the same way, and the end plate (5) or connecting member (35) is used to join the dome-shaped communication member (6) so as to straddle the right end of two adjacent liners (3A). The interiors of the two liners (3A) are communicated with each other and the rear end openings of the two liners (3A) (3B) are closed.

  Further, a closing member (41A) is joined to an end of the two short liners (3A) opposite to the communicating member (6) by an appropriate method, for example, a friction stir welding method, and the closing member (41A) Thus, the opening on the end side of the liner (3A) is closed. Note that the short liner (3A) and the closing member (41A) may be integrally formed by forging.

  Further, the mouth portion (7) may be formed in the right communication member (6) or any one of the closing members (41A) instead of the left communication member (6).

  FIG. 14 shows a modification of the pressure vessel when a plurality of vessel components are arranged. In FIG. 14, the fiber reinforced resin layer (4) is not shown.

  In the case of the pressure vessel (55) shown in FIG. 14 (a), on the left side of the liner (3A) at the right end of the first embodiment, the cross-sectional shape of the peripheral wall seems to be cut on the long axis extending in the vertical direction. A liner (56) having a substantially semi-elliptical shape and rounded so that the center in the vertical direction in the cross section protrudes to the left is disposed. The width in the left-right direction in the cross section of the peripheral wall of the liner (56) is smaller than the height in the up-down direction. The portions of the peripheral walls of both liners (3A) (56) that are close to each other are linearly extending in the vertical direction parallel to each other in the cross section.

  The front and rear ends of these liners (3A) (56) are respectively located in the same vertical plane, and both ends of these liners (3A) (56) are respectively connected to the end plates (5 ) Or the coupling member (35) of the third embodiment, and the dome-shaped communication member (6) is connected to both liners (3A) (3A) using the end plate (5) or the coupling member (35). 56) are joined so as to straddle both front and rear end portions, the insides of both liners (3A) (56) are communicated with each other, and both end openings of both liners (3A) (56) are closed. A mouth part (7) is formed in one of the communication members (6). The external shape of the communicating member (6) is a shape as shown by a chain line in FIG. 14 (a), and the shape of the end plate (5) or the connecting member (35) is also corresponding to this.

  In the pressure vessel shown in FIG. 14 (a), the lengths of the two liners may be different, and the liners may be arranged as shown in FIG.

  In the case of the pressure vessel (57) of FIG. 14 (b), the liners (3A) at the left and right ends of the first embodiment are spaced apart from each other, and the cross-sectional shape of the peripheral wall is angular between the liners (3A). A liner (58) having an isosceles triangle shape with rounded portions is arranged. The lengths of two equal sides in the cross section of the peripheral wall of the central liner (58) are equal to the length of the linear portion in the cross section of the peripheral wall of the liner (3A) at both left and right ends. The width in the left-right direction in the cross section of the peripheral wall of the liner (58) is smaller than the height in the up-down direction. And the part which adjoined each other in the surrounding wall of two adjacent liners (3A) (58) is mutually parallel linear form in a cross section.

  The front and rear ends of these liners (3A) (58) are located in the same vertical plane, and both ends of these liners (3A) (58) are respectively connected to the end plates (5 ) Or the coupling member (35) of the third embodiment, and the dome-shaped communication member (6) is connected to both liners (3A) (3A) using the end plate (5) or the coupling member (35). 58) are joined so as to straddle both front and rear end portions, the interiors of all the liners (3A) (58) are communicated with each other, and the both end openings of all the liners (3A) (58) are closed. A mouth part (7) is formed in one of the communication members (6). The external shape of the communicating member (6) is a shape as shown by a chain line in FIG. 14 (b), and the shape of the end plate (5) or the connecting member (35) also corresponds to this.

  In the pressure vessel shown in FIG. 14 (b), the way of arranging the liner can be changed as shown in FIG.

  In the case of the pressure vessel (60) shown in FIG. 14 (c), one of the left and right end portions (3A) of the pressure vessel (57) shown in FIG. 14 (b) and the central liner (58) In between, the liner (3B) located in the intermediate part of the left-right direction in the pressure vessel (1) of Embodiment 1 is arrange | positioned. All liners (3A) (3B) (58) are equal in length. The adjacent portions of the peripheral walls of the two adjacent liners (3A) (58) and (3A) (3B) are linearly parallel to each other in the cross section.

  The front and rear ends of all the liners (3A) (3B) (58) are located in the same vertical plane, and the front and rear ends of these liners (3A) (3B) (58) are the same as in the first embodiment. 2 end plates (5) or the connecting members (35) of the third embodiment, and all the liners (3A) ( 3B) The dome-shaped communication member (6) is joined so as to straddle the front and rear ends of (58), and the interiors of these liners (3A) (3B) (58) are communicated with each other and all liners (3A) ( 3B) The opening at both ends of (58) is closed. A mouth part (7) is formed in one of the communication members (6). The external shape of the communicating member (6) is a shape as shown by a chain line in FIG. 14 (c), and the shape of the end plate (5) or the connecting member (35) is also corresponding to this.

  In the pressure vessel shown in FIG. 14 (c), the way of arranging the liner can be changed as shown in FIG.

  In the case of the pressure vessel (61) shown in FIG. 14 (d), an intermediate liner (3B) in the left-right direction is similarly arranged on the right side of the leftmost liner (3A) of Embodiment 1, and the right side of this liner (3B) is arranged. In addition, a liner (62) in which the cross-sectional shape of the peripheral wall is a substantially fan shape with rounded corners is arranged such that one radial portion in the cross-section faces the left side and the other radial portion faces the upper side. The liner (3B) at the middle in the left-right direction of the first embodiment is arranged above the liner (62) with the long side portion in the cross-section directed in the left-right direction, and the embodiment above the liner (3B). A liner (3A) at the right end of 1 is arranged with the linear portion in the cross section facing downward. The length of the radius portion in the cross section of the peripheral wall of the liner (62) is equal to the length of the long side portion in the cross section of the peripheral wall of the liner (3B). The adjacent portions of the peripheral walls of the two adjacent liners (3A) (3B) and (3B) (62) are linearly parallel to each other in the cross section.

  The front and rear ends of all the liners (3A), (3B), and (62) are located in the same vertical plane, and the front and rear ends of these liners (3A), (3B), and (62) are the same as in the first embodiment. 2 end plates (5) or the connecting members (35) of the third embodiment, and all the liners (3A) ( 3B) The dome-shaped communication member (6) is joined so as to straddle the front and rear end portions of (62), and the interiors of these liners (3A) (3B) (62) are communicated with each other and all liners (3A) ( 3B) Both end openings of (62) are closed. A mouth part (7) is formed in one of the communication members (6). The external shape of the communicating member (6) is a shape as shown by a chain line in FIG. 14 (d), and the shape of the end plate (5) or the connecting member (35) is also corresponding to this.

  Also in the pressure vessel shown in FIGS. 10 to 14, a resin liner may be used. In this case, the liner is connected and integrated as described in the first to third embodiments.

  In the pressure vessel shown in FIGS. 10 to 14, when further pressure resistance is required, as in the case of the first embodiment, the secondary fiber reinforced resin layer (20 ) Is formed.

It is a perspective view which shows the pressure vessel of Embodiment 1 of this invention. It is a horizontal sectional view similarly. It is a cross-sectional view similarly. It is a perspective view which shows the method of manufacturing the container structure located in the end of a row direction. It is a perspective view which shows the method of manufacturing the container structure located in the middle of a row direction. It is a perspective view which shows the state which joins a communicating member to the some container structure integrated and integrated. It is a top view which shows the example of a response | compatibility when the further pressure resistance is requested | required of the pressure vessel of Embodiment 1. It is the disassembled perspective view which showed the pressure vessel of Embodiment 2 of this invention, and abbreviate | omitted the connection member. It is the disassembled perspective view which showed the pressure vessel of Embodiment 3 of this invention, and abbreviate | omitted the communication member. It is the top view which abbreviate | omitted one part which shows the modification of a pressure vessel at the time of arranging a some container structure in 3 or more rows in the left-right direction. It is the top view which notched a part which shows the pressure vessel of Embodiment 4 of this invention. It is a cross-sectional view of the pressure vessel of FIG. It is the top view which abbreviate | omitted one part which shows the modification of a pressure vessel at the time of arranging a some container structure in 2 rows in the left-right direction. It is a transverse cross section showing the modification of the pressure vessel at the time of arranging a plurality of vessel constituents which have liners with the same length.

Explanation of symbols

(1) (40) (42)-(45) (50) (51) (55) (57) (60) (61): Pressure vessel
(2): Container structure
(3A) (3B) (56) (58) (62): Liner
(4): Fiber reinforced resin layer
(5): End plate
(6): Domed communication member
(7): Mouth
(8A) (8B): outward flange
(20): Secondary fiber reinforced resin layer
(21): Hoop-wrapped fiber reinforced resin layer
(22): In-plane wound fiber reinforced resin layer
(23): Helical wound fiber reinforced resin layer
(30): Aluminum plate
(31A) (31B): Through hole
(35): Connecting member

Claims (23)

It is configured by arranging and integrating a plurality of container constituents composed of a non-cylindrical liner having at least one open end and a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner, and the liners of all container constituents A pressure vessel in which the interiors communicate with each other and one closed space is formed by the liners of all the container components, and has one mouth portion that allows the closed space to communicate with the outside ;
At least two adjacent container components are arranged such that the open ends of the liners are on the same side, and the dome-shaped communication member bulges outward across the open ends of the liners of these container components Are fixed so that the interiors of these liners communicate with each other and the liner opening is closed, and the liners of at least two adjacent container structures are arranged so that the open ends of the liners are on the same side. A pressure vessel in which an end plate is fixedly provided across the opening end of the dome, and the peripheral edge of the dome-shaped communication member is joined to the peripheral edge of the end plate . The pressure vessel according to claim 1 , wherein the end plate is formed by joining outward flanges integrally formed at an opening end portion of the liner . The pressure vessel according to claim 2, wherein the liner and the outward flange are made of aluminum, and the outward flanges are friction stir welded . The pressure according to claim 1, wherein the end plate is formed of a single plate having a through hole into which the open end portion of the liner is fitted, and a portion around the through hole in the plate is joined to the open end portion of the liner. container. The pressure vessel according to claim 4, wherein the liner and the plate are made of aluminum, and the liner and the plate are friction stir welded . The pressure vessel according to any one of claims 1 to 5, wherein the dome-shaped communication member and the end plate are made of aluminum, and the dome-shaped communication member and the end plate are joined by friction stir welding . It is configured by arranging and integrating a plurality of container constituents composed of a non-cylindrical liner having at least one open end and a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner, and the liners of all container constituents A pressure vessel in which the interiors communicate with each other and one closed space is formed by the liners of all the container components, and has one mouth portion that allows the closed space to communicate with the outside;
At least two adjacent container components are arranged such that the open ends of the liners are on the same side, and the dome-shaped communication member bulges outward across the open ends of the liners of these container components Are fixed so that the interiors of these liners communicate with each other and the liner opening is closed, and the liners of at least two adjacent container structures are arranged so that the open ends of the liners are on the same side. A plate-like connecting member having a notch into which the opening end portions of the liners on both sides are fitted is disposed between the opening end portions, and the peripheral portion of the notch in the connecting member and the opening end portion of the liner are joined, A pressure vessel in which a peripheral portion of a dome-shaped communication member is joined to an opening end of a connecting member and a liner . The pressure vessel according to claim 7, wherein the liner and the connecting member are made of aluminum, and the liner and the connecting member are friction stir welded . The pressure vessel according to claim 7 or 8, wherein the dome-shaped communicating member, the connecting member, and the liner are made of aluminum, and the dome-shaped communicating member, the liner, and the connecting member are joined by friction stir welding . The pressure vessel according to any one of claims 1 to 9, wherein outer portions of the peripheral wall of the liner of the container constituting body located at both left and right ends are rounded so that a central portion protrudes outward in a cross section. . The pressure vessel according to any one of claims 1 to 10 , wherein portions adjacent to each other on the peripheral walls of the liners of two adjacent vessel constituting bodies are linearly parallel to each other in cross section . The pressure vessel in any one of Claims 1-11 in which the width of the left-right direction in the cross section of the liner surrounding wall of each container structure is smaller than the height of an up-down direction . The liners are open at both ends, and the lengths of the liners of all the container components are equal, and the dome-shaped communication members that bulge outward are formed across the ends of the liners of all the container components. The pressure vessel according to any one of claims 1 to 12, wherein the pressure vessel is fixed and a mouth portion is provided in one of the dome-shaped communication members . The pressure vessel according to any one of claims 1 to 13, wherein the liner length of at least one of the vessel components is different . The pressure vessel according to any one of claims 1 to 14, wherein a secondary fiber reinforced resin layer is formed so as to straddle all vessel constituents . An in-plane wound fiber layer in which the secondary fiber reinforced resin layer is wound in parallel with the length direction of the liner, and a helical wound fiber layer in which the reinforcement fiber is wound so as to be inclined with respect to the length direction of the liner. 16. A pressure vessel according to claim 15, comprising a hoop-wrapped fiber layer in which reinforcing fibers are wound in a direction orthogonal to the length direction of all liners, and a resin impregnated in each fiber layer and cured . The fuel hydrogen pressure vessel, the fuel cell, and a pressure pipe for sending fuel hydrogen gas from the fuel hydrogen pressure vessel to the fuel cell are provided, and the fuel hydrogen pressure vessel is according to any one of claims 1 to 16. A fuel cell system consisting of pressure vessels . A fuel cell vehicle equipped with the fuel cell system according to claim 17 . A cogeneration system comprising the fuel cell system according to claim 17 . A natural gas supply system comprising a natural gas pressure vessel and a pressure pipe for sending out natural gas from the natural gas pressure vessel, wherein the natural gas pressure vessel comprises the pressure vessel according to any one of claims 1 to 16. . A cogeneration system comprising the natural gas supply system according to claim 20, a generator, and a generator driving device . A natural gas vehicle comprising the natural gas supply system according to claim 20 and an engine using natural gas as fuel . An oxygen gas supply system comprising a pressure vessel for sending oxygen gas from an oxygen pressure vessel and an oxygen pressure vessel, the oxygen pressure vessel comprising the pressure vessel according to any one of claims 1 to 16 .

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