JP2006046645A - Pressure vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure vessel installable without causing wasteful space, while achieving large volumes. <P>SOLUTION: This pressure vessel 1 is constituted by integrally arranging a plurality of vessel components 2 respectively composed of cylindrical liners 3 opened at both ends and fiber-reinforced resin layers 4 covering peripheral wall outer peripheral faces of the liners 3. A dome-shaped connecting member 6 swelling outward is fixed over both end parts of the liners 3 of the vessel components 2, thus the insides of the liners 3 are communicated with each other, and both end openings of the liners 3 are closed. One closed space is formed by all of the liners 3. At least one connecting member 6 is provided with an opening part 7 to communicate the closed space to the external. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  For example, in the automobile industry, the housing industry, the military industry, the aerospace industry, the medical industry, etc., the present invention is 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. The present invention relates to a pressure vessel used for the above.

  In this specification and claims, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  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.

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) A cylindrical liner having at least one end opened, and a plurality of container constituents composed of a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner are arranged and integrated, and all container constituents A pressure vessel in which the insides of the liners are communicated with each other, and one closed space is formed by the liners of all the container constituents, and a mouth portion that allows the closed spaces to communicate with the outside.

  2) The pressure vessel according to 1) above, wherein the number of the mouth portions is one.

  3) A dome shape in which at least two adjacent container components are arranged so that the open ends of the liners are on the same side, and bulge outwardly across the open ends of the liners of these container components The pressure vessel according to the above 1) or 2), wherein the inside of these liners is communicated with each other and the opening of the liner is closed by fixing the communicating member.

  4) An end plate is fixedly provided across the open ends of the liners of at least two adjacent container components arranged so that the open ends are on the same side, and the peripheral edge of the dome-shaped communication member is the end. 3. The pressure vessel as described in 3) above, which is joined to the peripheral edge of the plate.

  5) The pressure vessel according to 4) above, wherein the end plate is formed by joining outward flanges integrally formed at the opening end of the liner.

  6) The pressure vessel according to 5) above, wherein the liner and the outward flange are made of aluminum, and the outward flanges are friction stir welded.

  7) The above description 4), 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.

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

  9) The pressure vessel according to any one of the above 4) to 8), 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.

  10) A plate-like connecting member having a notch into which the open ends of the liners on both sides are fitted between the open ends of the liners of at least two adjacent container components arranged so that the open ends are on the same side. The pressure described in 3) above, in which the peripheral portion of the notch in the connecting member and the opening end of the liner are joined, and the peripheral edge of the dome-shaped communication member is joined to the opening end of the connecting member and the liner container.

  11) The pressure vessel according to 10) above, wherein the liner and the connecting member are made of aluminum, and the liner and the connecting member are friction stir welded.

  12) The pressure vessel as described in 10) above, wherein the dome-shaped communicating member, the liner and the connecting member are made of aluminum, and the dome-shaped communicating member, the liner and the connecting member are friction stir welded.

  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 3) to 12) above, wherein a member is fixed and a mouth is provided in at least one of the dome-shaped communication members.

  14) The pressure vessel according to any one of 1) to 12) 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 the diameters of the liners of all the vessel constituents are equal.

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

  17) The pressure vessel according to any one of 1) to 16) above, wherein a secondary fiber reinforced resin layer is formed so as to straddle all vessel components.

  18) An in-plane wound fiber layer in which a secondary fiber reinforced resin layer is wound with reinforcing fibers wound in parallel to the axial direction of the liner, and a helically wound fiber layer in which reinforcing fibers are wound so as to be inclined with respect to the axial direction of the liner The pressure vessel according to 17) above, comprising a hoop-wrapped fiber layer in which reinforcing fibers are wound so as to be orthogonal to the axial direction of the liner, and a resin impregnated in each fiber layer and cured.

  19) 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 18) A fuel cell system comprising the pressure vessel described in 1.

  20) A fuel cell vehicle equipped with the fuel cell system according to 19) above.

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

  22) a natural gas pressure vessel and a pressure pipe for sending natural gas from the natural gas pressure vessel, the natural gas pressure vessel comprising the pressure vessel according to any one of 1) to 18) above Gas supply system.

  23) A cogeneration system comprising the natural gas supply system described in 22) above, a generator, and a generator drive device.

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

  25) 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 18) above .

  According to the pressure vessel of 1) above, a cylindrical liner having at least one end opened and a plurality of vessel components composed of a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner are arranged and integrated. The liners of all the container components are communicated with each other, and one closed space is formed by the liners of all the container components. By appropriately changing the diameter and length of the container structure and the arrangement of all the container structures in accordance with the device to be installed, for example, an empty space of an automobile, it can be installed without causing unnecessary space. In addition, 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.

  According to the pressure vessel of the above 2), since the number of the mouth portions is one, only one valve is used, and the cost is reduced.

  According to the pressure vessel of 3) above, the inside of the liners of at least two adjacent container structural bodies are communicated with each other by the communication member, so that one closed space can be formed relatively easily.

  According to the pressure vessel of 4) above, the dome-shaped communication member can be fixed relatively easily across the open ends of the liners of at least two adjacent container constituents.

  According to the pressure vessel of 5) above, the end plate can be formed relatively easily.

  According to the pressure vessel of 6), the outward flanges can be firmly joined to each other.

  According to the pressure vessel of 7) above, the end plate can be formed relatively easily.

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

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

  According to the pressure container of 10) above, the dome-shaped communication member can be fixed relatively easily across the open ends of the liners of at least two adjacent container constituents.

  According to the pressure vessel of the above 11), the liner and the connecting member can be firmly joined.

  According to the pressure vessel of 12), the dome-shaped communication member, the liner, and the connecting member can be firmly joined.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part and the same thing through all drawings, and the overlapping description is abbreviate | omitted.

  In the following description, the left and right sides of FIG. 2 and FIG. 10 (the front and back direction in FIG. 11) are referred to as left and right, the lower side (right side in FIG. 11) is the front, and the opposite side is the rear. To do. Also, the top and bottom of FIGS. 3 and 11 are referred to as the top and bottom.

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) includes an aluminum cylindrical liner (3) whose axis is directed in the left-right direction and open at both ends, and a fiber reinforced resin layer (4) covering the outer peripheral surface of the peripheral wall of the liner (3). ) And a plurality of container components (2) arranged in parallel in the front-rear direction so that the axis of the liner (3) is located in the same horizontal plane, and the liners of all the container components (2) ( 3) Aluminum end plates (5) provided in a fixed manner across the left and right ends of each, and the liners (3) of all container components (2) fixed to each end plate (5) An aluminum dome-shaped communication member (6) is provided which communicates the interiors and bulges outward to close both end openings of all liners (3). One closed space is formed by the liners (3) of all the container components (2), and one communicating member (6) is provided with one mouth (7) for communicating the closed space to the outside. Yes.

  The lengths, outer diameters, and wall thicknesses of the liners (3) of all the container components (2) are the same, and both ends thereof are arranged in the same vertical plane. Outward flanges (8A) and (8B) are integrally formed at both ends of each liner (3). The outward flanges (8A) of the liner (3) located at both front and rear ends are substantially semi-oval with outer edges being arcuate. Further, the outward flange (8B) of the other liner (3) is rectangular. The heights of the outward flanges (8A) (8B) of all the liners (3) are equal. The fiber reinforced resin layer (4) is formed by impregnating and hardening a resin in a hoop wound fiber layer wound so as to be substantially perpendicular to the axial direction of the liner (3), and has an outward flange (8A ) (8B) except for the entire outer peripheral surface of the peripheral wall of each liner (3). 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) (8B) of the adjacent liners (3) are joined together from the outside in the axial direction of the liner (3) by an appropriate method, here, the friction stir welding method (all container components ( 2) are integrated, and end plates (5) straddling both ends of the liner (3) are fixedly provided by all outward flanges (8A) and (8B). 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 one side of the end plate (5). . 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 liner (3) and the communicating members (6) are each made of, for example, any one of a JIS A2000 alloy, a JIS A5000 alloy, a JIS A6000 alloy, and a JIS A7000 alloy. All liners (3) and both communicating members (6) may be formed of the same material, or at least one may be formed of different materials.

  The pressure vessel (1) is manufactured by the method described below, as shown in FIGS.

  First, the container structure (2) is manufactured by the method shown in FIGS. 4 shows a method for manufacturing the container structure (2) located at one end in the front-rear direction, and FIG. 5 shows a method for manufacturing the container structure (2) located in the middle part in the front-rear direction.

  That is, the hollow extruded profiles (15A) and (15B) made of aluminum having a cross-sectional outer shape that is the same shape and size as the outer flanges (8A) and (8B) and that have a circular through-hole (16) in the cross-section. (See FIGS. 4 (a) and 5 (a)). Next, by turning the outer peripheral surface of the hollow extruded profile (15A) (15B) except for both ends thereof, the cylindrical liner (3) opened at both ends and the both ends of the liner (3) facing outward The flanges (8A) and (8B) are formed at the same time (see FIGS. 4 (b) and 5 (b)). Next, a hoop winding is performed by winding a reinforcing fiber impregnated with resin by a filament winding method or a bundle of reinforcing fibers impregnated with resin in a direction substantially perpendicular to the axis of the liner (3) around the outer periphery of the liner (3). After forming the fiber layer, the resin is cured to form the fiber reinforced resin layer (4), thereby manufacturing the container structure (2) (see FIGS. 4 (c) and 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 container components (2) are arranged in parallel so that their axes are located in the same horizontal plane and both ends are located in the same vertical plane, and the outward flanges of adjacent container components (2) (8A) The side edges of (8B) are brought into contact with each other. Then, the end plates (5) are fixedly provided by friction stir welding the outward flanges (8A) (8B) of the adjacent container structural bodies (2) from the outside in the axial direction of the liner (3) ( (See FIG. 6).

  Thereafter, the communication member (6) and the end plate (5) are friction stir welded from the outer peripheral side in a state in which the peripheral wall end faces of both the communication members (6) are in contact with the outer peripheral edge portions of both end plates (5). .

  Thus, the pressure vessel (1) is manufactured.

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

  In the first embodiment, the liner (3) is made of aluminum, but instead of this, a resin one may be used. When the resin liner (3) is used, the outward flanges (8A) (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 the resin liner (3) is used, an aluminum flange that is separate from the liner (3) may be used as the outward flange (8A) (8B). In this case, for example, the liner (3) and the outward flanges (8A) and (8B) are integrated by injection molding the liner (3) using the outward flanges (8A) and (8B) as inserts. In this case, the joining of the outward flanges (8A) and (8B) and the joining of the communicating member (6) and the end plate (5) are performed in the same manner as described above.

  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 (2).

  The secondary fiber reinforced resin layer (20) is a resin formed on a hoop-wrapped fiber layer in which reinforcing fibers are wound so as to be almost perpendicular to the axial direction of the liner (3) so as to connect all container components (2). Hoop-wrapped fiber reinforced resin layer impregnated and cured (21), and in-plane wound fiber reinforced resin obtained by impregnating and curing resin in an in-plane wound fiber layer formed by winding reinforcing fibers in parallel to the axial direction of the liner (3) A layer (22) and a helically wound fiber reinforced resin layer (23) obtained by impregnating and hardening a resin in a helically wound fiber layer formed by winding reinforcing fibers so as to be inclined with respect to the axial direction of the liner (3). 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. Further, as the 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.

Embodiment 2
This embodiment is shown in FIG.

  In the case of the pressure vessel of this embodiment, both end plates (5) are composed of a single metal plate having a through hole (31) into which the open end of the liner (3) is fitted, here an aluminum plate (30). . Then, both end portions of each liner (3) are fitted into the through holes (31) of the aluminum plate (30), respectively, and the portions around the through holes (31) in the aluminum plate (30) and the liner (3) The opening end is joined from the outside in the axial direction of the liner (3) 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 through hole (31) of the aluminum plate (30) at both ends of the liner (3). The method of joining the aluminum plate (30) and the liner (3) 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.

  The other configuration is the same as that of the pressure vessel (1) of the first embodiment, and when further pressure resistance is required, as in the case of the first embodiment, it extends over all the vessel components (2). A secondary fiber reinforced resin layer (20) is formed.

  In the second embodiment, a resin liner (3) may be used. When the resin liner (3) is used, all the liners (3) 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 liner (3) is used, an end plate (5) made of aluminum separate from the liner (3) may be used. In this case, for example, the liner (3) and the end plate (5) are integrated by simultaneously injection-molding all the liners (3) 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 (3) of the adjacent vessel structure (2) are made of metal, here an aluminum plate-like connecting member It is connected and integrated via (35). That is, on both sides of the connecting member (35), semicircular cutouts (36) into which half portions of both end portions of two adjacent liners (3) are fitted are formed. Then, half of both ends of the liner (3) 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 (3) Are joined from the outside in the axial direction of the liner (3) by an appropriate method such as friction stir welding. 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 (3). The method of joining the connecting member (35) and the liner (3) 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 all the liners (3) and the connecting members (35). The communication member (6) is in a state in which the peripheral wall end face is brought into contact with the peripheral edge portion of the end face of all the liners (3) and the connecting member (35), and an appropriate method such as friction stir welding is used. It is joined from the outer peripheral side. The method of joining the communicating member (6) to the liner (3) 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.

  The other configuration is the same as that of the pressure vessel (1) of the first embodiment, and when further pressure resistance is required, as in the case of the first embodiment, it extends over all the vessel components (2). A secondary fiber reinforced resin layer (20) is formed.

  In the third embodiment, a resin liner (3) may be used. When the resin liner (3) is used, the connecting member (35) may be formed integrally with all the liners (3). In this case, the communication member (6) is also made of resin, and is joined to the connecting member (35) and the liner (3) by welding or adhesion. Even when the resin liner (3) is used, an aluminum member separate from the liner (3) may be used as the connecting member (35). In this case, for example, the liner (3) and the connecting member (35) are integrated by injection molding all the liners (3) using the connecting member (35) as an insert. In this case, the connecting member (6) is joined to the liner (3) and the connecting member (35) by an appropriate method such as adhesion.

  In the said Embodiments 1-3, the number of container structures (2) can be changed suitably. In the first embodiment, when the number of container structures (2) is two, two container structures (2) located at both ends in the front-rear direction in FIG. 1 are used. In Embodiments 1 to 3, the outer diameters of the liners (3) of all the container components (2) are the same, but the present invention is not limited to this. At least one container component (2) The outer diameter of the liner (3) may be different. In this case, the shape of the end plate (5) in the first and second embodiments and the shape of the connecting member (35) in the third embodiment are appropriately changed.

  FIG. 10 shows a modified example of the pressure vessel when a plurality of vessel components (2) having liners (3) having the same outer diameter and thickness are arranged in the front-rear direction so that the axes are located in the same horizontal plane. Show. 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 (3) are equal, and all the liners (3) are arranged so that both ends are located in the same vertical plane. The left end portions of all the liners (3) are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, and the end plate (5) Alternatively, using the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the left end of all the liners (3), and the inside of all the liners (3) The left and right openings of all the liners (3) are closed while communicating with each other.

  The right end portions of the two adjacent liners (3) on the front side are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, and the end plate ( 5) or using the connecting member (35), the dome-shaped communication member (6) is joined so as to straddle the right end of both liners (3), and the interiors of both liners (3) are communicated with each other. The right end opening of the liner (3) is closed. A substantially semi-hollow spherical closure member (41) is joined to the right end portion of the rear end liner (3) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the liner (3 ) Right end opening is closed. The liner (3) and the closing member (41) may be integrally formed by forging.

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

  In the case of the pressure vessel (42) shown in FIG. 10 (b), the lengths of all the liners (3) are equal, and all the liners (3) are arranged so that both ends are located in the same vertical plane. The left end portions of all the liners (3) are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, and the end plate (5) Alternatively, using the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the left end of all the liners (3), and the inside of all the liners (3) The left and right openings of all the liners (3) are closed while communicating with each other.

  A closing member (41) is joined to the right end of each liner (3) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the right end opening of each liner (3) is closed by the closing member (41). Has been. Each liner (3) and closing member (41) may be integrally formed by forging.

  Further, the mouth portion (7) may be formed in any one of the closing members (41) 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 (3) are different, and all the liners (3) are arranged so that the left ends are located in the same vertical plane. ing. The left end portions of all the liners (3) are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, and the end plate (5) Alternatively, using the connecting member (35), the dome-shaped communication member (6) having the mouth portion (7) is joined so as to straddle the left end of all the liners (3), and the inside of all the liners (3) The left and right openings of all the liners (3) are closed while communicating with each other.

  A closing member (41) is joined to the right end of each liner (3) from the outer peripheral side by an appropriate method, for example, friction stir welding, and the right end opening of each liner (3) is closed by the closing member (41). Has been. Each liner (3) and closing member (41) may be integrally formed by forging.

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

  In the case of the pressure vessel (44) shown in FIG. 10 (d), the lengths of all the liners (3) are equal, and all the liners (3) are arranged so that both ends are located in the same vertical plane. The left ends of the two front liners (3) and the right ends of the two rear liners (3) are connected to the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3. The dome-shaped connecting member (6) is joined so as to straddle the ends of two adjacent liners (3) using the end plate (5) or connecting member (35). The insides of these liners (3) communicate with each other, and the left end openings of the two adjacent liners (3) on the front side and the right end openings of the two adjacent liners (3) on the rear side are closed. .

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

  The mouth portion (7) is formed in the closing member (41) of the liner (3) at the front end or any one of the communication members (6) instead of the closing member (41) of the liner (3) at the rear end. It may be.

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

  Further, a closing member (41) is joined to an end portion of the two short liners (3) opposite to the communication member (6) by an appropriate method, for example, a friction stir welding method, and the closing member (41) Thus, the opening on the end side of the liner (3) is closed. Note that the short liner (3) and the closing member (41) 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 (41) instead of the left communication member (6).

  In the case of the pressure vessel (46) shown in FIG. 10 (f), two short liners (3) are arranged on the same straight line extending in the left-right direction on the rear side of one liner (3). . The left end of one short liner (3) is located in the same vertical plane as the left end of the long liner (3), and the left ends of these two liners (3) are the end plates of the first and second embodiments ( 5) or a dome-shaped communication member (6) having a mouth portion (7) using the end plate (5) or the connection member (35). ) Are joined so as to straddle the left end portions of two adjacent liners (3), the insides of the two liners (3) communicate with each other, and the left end openings of the two liners (3) are closed. The right end of the other short liner (3) is located in the same vertical plane as the right end of the long liner (3), and the right ends of these two liners (3) are connected to the end plates of the first and second embodiments (2). 5) or two liners which are connected and integrated using the connecting member (35) of the third embodiment, and the dome-shaped connecting member (6) is adjacent using the end plate (5) or the connecting member (35). It is joined so as to straddle the right end portion of (3), the insides of the two liners (3) are communicated with each other, and the right end openings of the two liners (3) are closed.

  Further, a closing member (41) is joined to an end portion of the two short liners (3) opposite to the communication member (6) by an appropriate method, for example, a friction stir welding method, and the closing member (41) Thus, the opening on the end side of the liner (3) is closed. Note that the short liner (3) and the closing member (41) 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 (41) instead of the left communication member (6).

  In the pressure vessels (40) (42) to (46) shown in FIGS. 10 (a) to (f), the resin liner (3) may be used. In this case, as described in the first to third embodiments, the liner (3) is connected and integrated.

  Further, in the pressure vessels (40) (42) to (46) shown in FIGS. 10 (a) to (f), the method of joining the liner (3) and the closing member (41) is limited to the friction stir welding method. Is not to be done.

  FIG. 11 shows a modified example of a pressure vessel in which a plurality of container structures (2) having liners (3) having the same length are arranged so that the axes of all the liners (3) are not located in the same horizontal plane. Indicates. In addition, in FIG. 11, illustration of the fiber reinforced resin layer (4) is abbreviate | omitted.

  In the case of the pressure vessel (50) shown in FIG. 11 (a), a plurality of liners (3) having the same outer diameter and thickness are arranged in the front-rear direction and the upper-lower direction.

  In the case of the pressure vessel (51) shown in FIG. 11 (b), a plurality of liners (3) having the same outer diameter and wall thickness are arranged in the front-rear direction, and one liner (3) having a larger diameter on the front side thereof. Are lined up. The number of small diameter liners (3) can be changed as appropriate.

  In the case of the pressure vessel (52) shown in FIG. 11 (c), a plurality of liners (3) having the same outer diameter and the same thickness are arranged in the front-rear direction. A plurality of liners (3) having the same wall thickness are arranged in the front-rear direction. The number of small diameter liners (3) and the number of large diameter liners (3) can be appropriately changed.

  In the case of the pressure vessel (53) shown in FIG. 11 (d), on the rear side of one liner (3), a plurality of liners (3) having smaller diameters and equal outer diameters and wall thicknesses are provided in the front-rear direction. And one liner (3) having the same diameter as the rear liner (3) is arranged on the front side. The number of large-diameter liners (3), the number of rear-side small-diameter liners (3), and the number of front-side small-diameter liners (3) can be appropriately changed.

  In the case of the pressure vessel (54) shown in FIG. 11 (e), on the front side of one liner (3), a plurality of, in this case, two liners (3) having a smaller diameter and the same outer diameter and wall thickness. Are lined up and down. The number of large diameter liners (3) and the number of small diameter liners (3) can be changed as appropriate.

  In the case of the pressure vessel (55) shown in FIG. 11 (f), two liners (3) having the same outer diameter and wall thickness are arranged at intervals in the front-rear direction. A plurality of, in this case, two liners (3) having a small diameter and the same outer diameter and thickness are arranged one above the other.

  In the case of the pressure vessel (56) shown in FIG. 11 (g), a plurality of liners (3) having the same outer diameter and thickness are arranged horizontally in the front-rear direction, and are directed obliquely upward from the front end liner (3). As described above, a plurality of liners (3) having the same diameter as these liners (3) are arranged. Note that the number of the liners (3) arranged horizontally and the number of the liners (3) arranged obliquely upward in the front direction can be appropriately changed.

  In the pressure vessels (50) to (56) shown in FIGS. 11 (a) to (g), both ends of all the liners (3) are located in the same vertical plane, and both ends of these liners (3) are arranged. The parts are connected and integrated using the end plate (5) of Embodiments 1 and 2 or the connecting member (35) of Embodiment 3, respectively, and the end plate (5) or connecting member (35) is used. The dome-shaped communication member (6) is joined so as to straddle both ends of all the liners (3), the insides of all the liners (3) are communicated with each other, and the openings on both ends of all the liners (3) are closed. Has been. A mouth part (7) is formed in one of the communication members (6). The outer shape of the communication member (6) is a shape as shown by a chain line in FIGS. 11 (a) to 11 (g), and the shape of the end plate (5) or the connecting member (35) also corresponds to this.

  In the pressure vessels (50) to (56) shown in FIGS. 11 (a) to (g), a resin liner (3) may be used. In this case, as described in the first to third embodiments, the liner (3) is connected and integrated.

  Further, in the pressure vessel shown in FIGS. 10 and 11, when further pressure resistance is required, as in the case of the first embodiment, the secondary fiber reinforced resin is straddled across all vessel components (2). A layer (20) is formed.

It is a perspective view which shows the pressure vessel of Embodiment 1 of this invention. 3 is a horizontal sectional view of the pressure vessel according to Embodiment 1. FIG. 2 is a cross-sectional view of the pressure vessel according to Embodiment 1. FIG. It is a perspective view which shows the method to manufacture the container structure located in the front-back direction end in the pressure vessel of Embodiment 1. It is a perspective view which shows the method of manufacturing the container structure located in the middle of the front-back direction in the pressure vessel of Embodiment 1. FIG. In the pressure vessel of Embodiment 1, 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. FIG. 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 a top view which abbreviate | omitted one part which shows the modification of a pressure vessel at the time of arranging the container structure which has a liner with the same outer diameter and thickness so that the axis line of a liner may be located in the same horizontal surface. It is a cross-sectional view showing a modification of a pressure vessel when a plurality of container structures having liners of equal length are arranged so that the axes of all the liners are not located in the same horizontal plane.

Explanation of symbols

(1) (40) (42)-(46) (50)-(56): Pressure vessel
(2): Container structure
(3): 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
(31): Through hole
(35): Connecting member

Claims (25)

It is composed of a cylindrical liner having at least one end opened and a plurality of container constituents composed of a fiber reinforced resin layer covering the outer peripheral surface of the peripheral wall of the liner. A pressure vessel in which one closed space is formed by liners of all the container constituents, and a mouth portion that allows the closed space to communicate with the outside while being communicated with each other. The pressure vessel according to claim 1, wherein the number of mouths is one. 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 The pressure vessel according to claim 1 or 2, wherein the interior of these liners is communicated with each other by being fixed, and the opening of the liner is closed. An end plate is provided in a fixed manner across the open ends of the liners of at least two adjacent container components arranged so that the open ends are on the same side, and the peripheral edge of the dome-shaped communication member is the end plate The pressure vessel according to claim 3, which is joined to the peripheral edge. The pressure vessel according to claim 4, wherein the end plate is formed by joining outward flanges integrally formed at the opening end of the liner. The pressure vessel according to claim 5, wherein the liner and the outward flange are made of aluminum, and the outward flanges are friction stir welded. The pressure according to claim 4, wherein the end plate is formed of a single plate having a through hole into which the open end of the liner is fitted, and a portion around the through hole in the plate and the open end of the liner are joined. container. The pressure vessel according to claim 7, 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 4 to 8, 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. A plate-like connecting member having a notch into which the open ends of the liners on both sides are fitted is disposed between the open ends of the liners of at least two adjacent container components arranged so that the open ends are on the same side. 4. The pressure vessel according to claim 3, wherein the peripheral portion of the notch in the connecting member and the open end of the liner are joined, and the peripheral edge of the dome-shaped communication member is joined to the open end of the connecting member and the liner. The pressure vessel according to claim 10, 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 10, wherein the dome-shaped communication member, the liner, and the connecting member are made of aluminum, and the dome-shaped communication member, the liner, and the connecting member are friction stir welded. 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 3 to 12, which is fixed and has a mouth provided in at least one of the dome-shaped communication members. The pressure vessel according to any one of claims 1 to 12, 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 the liner diameters of all the vessel components are equal. The pressure vessel according to any one of claims 1 to 14, wherein the liner diameter of at least one of the container components is different. The pressure vessel according to any one of claims 1 to 16, 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 winds the reinforcing fiber in parallel to the axial direction of the liner, a helical wound fiber layer in which the reinforcing fiber is wound so as to be inclined with respect to the axial direction of the liner, and reinforcement The pressure vessel according to claim 17, comprising a hoop-wrapped fiber layer in which fibers are wound so as to be orthogonal to the axial direction of the liner, and a resin in which each fiber layer is impregnated and cured. 19. 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, the fuel hydrogen pressure vessel according to any one of claims 1 to 18. A fuel cell system consisting of pressure vessels. A fuel cell vehicle equipped with the fuel cell system according to claim 19. A cogeneration system comprising the fuel cell system according to claim 19. 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 claim 1. . 23. A cogeneration system comprising the natural gas supply system according to claim 22, a generator, and a generator driving device. A natural gas vehicle comprising the natural gas supply system according to claim 22 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 18.

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