JP4423129B2 - 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 left and right sides of FIGS. 1, 8, 9, 11 and 12 are called left and right, the lower side of the figure is the front, and the opposite side is the rear. To do. In addition, the top and bottom in FIG .

  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, a container comprising a cylindrical liner having both ends open, an outwardly bulging dome-like closing member that is fixed to both ends of the liner and closes both ends of the liner, and a reinforcing fiber are used. A helically wound fiber reinforced resin layer that is wound in the length direction of the liner so as to cover both closure members and impregnated and fixed with an epoxy resin, and a reinforcing fiber is wound around the liner in the circumferential direction and fixed with an epoxy resin. A hoop-wrapped fiber reinforced resin layer is known (for example, see Patent Document 1).

However, in the pressure vessel described in Patent Document 1, there is a problem that it is difficult to wind the reinforcing fiber forming the helically wound fiber reinforced resin layer because the closing member has an outward bulging dome shape. In addition, the reinforcing fibers forming the helically wound fiber reinforced resin layer are displaced, and as a result, the pressure resistance in the length direction of the pressure vessel may be reduced.
Japanese Patent Laid-Open No. 9-42595

  An object of the present invention is to solve the above-described problems and provide a pressure vessel that can easily wind a reinforcing fiber in the length direction of a liner.

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

1) From a first liner reinforced resin layer which has a cylindrical liner whose both ends are closed by a closing portion, and a reinforcing fiber wound in the circumferential direction on the outer peripheral surface of the liner and covers the outer peripheral surface of the liner A plurality of container constituents, and a second fiber reinforced resin layer having reinforcing fibers wound in the length direction of the container constituents so as to cover both closed portions of the liner,
A plurality of container constituents are arranged in parallel so that the axis of the liner is located in the same horizontal plane and face the same direction, and the reinforcing fibers of the second fiber reinforced resin layer are arranged so as to cover both ends of the liner. When the winding prevention member is arranged and the direction in which the plurality of container constituents are arranged is the front-rear direction, the outer side portion of the liner in the axial direction in the cross section of the slip prevention member is orthogonal to the horizontal plane when viewed from the front. The middle portion of the direction is rounded so as to protrude outward in the axial direction of the liner, and the protruding end portion extends linearly in the front-rear direction, and the second fiber reinforced resin layer is applied to the both-shift preventing member Thus, the pressure vessel which has the reinforcing fiber wound around the length direction of the container structure.

2) a plurality of containers construct is integrated with, with all the container structure liner inside each other in is communicated by the liner of all container structure is between one closed space is formed, through the closed space to the outside The pressure vessel as described in 1) above, which is provided with a single mouth portion.

3) At least one of the closed portions is fixed across the open ends of the liners of at least two adjacent container components, and outwardly passing through the interiors of the at least two adjacent container component liners. 2. The pressure vessel as described in 2) above, comprising a dome-shaped communicating member that bulges.

4) The liner lengths of all the container components are equal, both closures are respectively fixed across the open ends of the liners of all the container components, and the liners of all the container components The pressure vessel according to 2) above, comprising a dome-shaped communication member bulging outwardly through the interior of each of the two dome-shaped communication members.

5) The above-mentioned 3) , wherein the end plate is fixedly provided across the open ends of the liners of at least two adjacent container components, and the peripheral edge of the dome-shaped communication member is joined to the peripheral edge of the end plate. 4) The pressure vessel as described.

6) The pressure vessel according to 5) above , wherein the end plate is formed by joining outward flanges formed integrally with the open end of the liner.

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

8) The above description 5) , wherein the end plate is composed 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.

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

10) The pressure vessel according to any one of 5) to 9) 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.

11) A plate-like connecting member having notches into which the opening ends of the liners on both sides are fitted is disposed between the opening ends of the liners of at least two adjacent container components, and a portion around the notch in the connecting member; The pressure vessel according to 3) or 4) above , wherein the opening end of the liner is joined, and the peripheral edge of the dome-shaped communication member is joined to the connecting member and the opening end of the liner.

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

13) The pressure vessel according to 11) or 12) 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.

14) One of closure at least one is secured to the open end of the liner of each container structure, and to one of consisting bulged dome-shaped closure member outwardly above 1) to 13) The pressure vessel as described.

15) 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, wherein the fuel hydrogen pressure vessel is any one of 1) to 14) above A fuel cell system comprising the pressure vessel described in 1.

16) A fuel cell vehicle equipped with the fuel cell system according to 15) above .

17) A cogeneration system comprising the fuel cell system according to 15) above .

18) A natural gas pressure vessel and a pressure pipe for sending natural gas from the natural gas pressure vessel are provided, and the natural gas pressure vessel comprises the pressure vessel according to any one of 1) to 14) above. Gas supply system.

19) A cogeneration system comprising the natural gas supply system as described in 18) above , a generator, and a generator driving device.

20) A natural gas vehicle comprising the natural gas supply system according to 18) above and an engine using natural gas as fuel.

21) 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 14) above .

According to the pressure vessel of 1) above, the container is arranged so that the reinforcing fibers of the second fiber reinforced resin layer are placed on both the closing portions of the liner by the action of the displacement preventing member arranged so as to cover the both ends closing portions of the liner. The operation | work at the time of winding in the length direction of a structure can be performed easily, and the shift | offset | difference of a reinforcement fiber can be prevented. And since the shift | offset | difference of the reinforcement fiber of a 2nd fiber reinforced resin layer is prevented, the pressure resistance of the length direction of a pressure vessel becomes excellent. In addition, when the reinforcing fiber is wound, the outer portion in the axial direction of the liner in the cross section of the slip prevention member is rounded so that the intermediate portion in the height direction protrudes outward in the left-right direction when viewed from the front. Breaking of the reinforcing fiber is prevented.

According to the pressure vessel of 2) above , a plurality of vessel components are arranged and integrated, the liners of all the vessel components are communicated with each other, and one closed space is formed by the liners of all the vessel components. A device to be installed, for example, an automobile, in which the size and length of the cross-section of each container structure including one mouth portion that allows the closed space to communicate with the outside and how to arrange all the container structures are arranged. By appropriately changing according to the empty space, it can be installed without causing a useless space, and the capacity can be increased. Further, since only one port is provided, only one valve is used, and the cost is reduced.

According to the pressure vessels of the above 3) and 4) , the insides of the liners in at least two adjacent container structures can be communicated with each other relatively easily, and the openings of these liners can be closed.

According to the pressure vessel of 5) 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 6) , the end plate can be formed relatively easily.

According to the pressure vessel of 7), the outward flanges can be firmly joined to each other.

According to the pressure vessel of 8) , the end plate can be formed relatively easily.

According to the pressure vessel of 9) above , the liner and the plate can be firmly joined.

According to the pressure vessel of 10) above , the dome-shaped communication member and the end plate can be firmly joined.

According to the pressure container of the above 11) , 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 12) above , the liner and the connecting member can be firmly joined.

According to the pressure vessel of 13) above , the dome-shaped communication member, the liner, and the connecting member can be firmly joined.

Embodiments of the present invention will be described below together with reference examples 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.

Reference example 1
This reference example is shown in FIGS. 1 to 4 show a pressure vessel, and FIGS. 5 to 7 show a method for manufacturing the pressure vessel.

  1 to 4, a pressure vessel (1) includes an aluminum cylindrical liner (3) opened at both ends, and a primary fiber reinforced resin layer (4) covering the outer peripheral surface of the peripheral wall of the liner (3) (first A pressure vessel body (10) having a plurality of vessel components (2) arranged in parallel so that the axis of the liner (3) is positioned in the same horizontal plane, and a pressure vessel A secondary fiber reinforced resin layer (20) formed so as to straddle all the container components (2) of the main body (10).

  Aluminum end plates (5) are provided in a fixed manner across both ends of the liner (3) of all container components (2), and all container components (2) are provided on each end plate (5). An aluminum dome-shaped communicating member (6) (closed portion) bulging outward that closes the openings at both ends of all the liners (3) is fixed. Then, one closed space is formed by the liners (3) of all the container structural bodies (2). On the other hand, here, the left communication member (6) has one mouth portion (6) that allows the closed space to communicate with the outside. 7) is provided.

  The lengths and diameters of the liners (3) of all the container structures (2) are equal, and the left and right ends thereof are arranged in the same vertical plane. Outward flanges (8A) and (8B) are integrally formed at both left and right ends of each liner (3). The outward flanges (8A) of the liner (3) positioned at both ends in the direction (front-rear direction) in which the container structural bodies (2) are arranged are substantially semi-oval with the outer edge 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 primary fiber reinforced resin layer (4) is formed by impregnating and curing a hoop wound fiber layer wound around the liner (3) in a circumferential direction so as to be substantially perpendicular to the axial direction of the liner (3). It covers the entire outer peripheral surface of the peripheral wall of each liner (3) except for the portions of the outward flanges (8A) and (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) (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). On the top of the outer surface of each dome-shaped communication member (6), a plurality of, in this case, two recesses (12) extending in the vertical direction are formed as gap prevention portions at intervals in the front-rear direction. The recess (12) of one communication member (6) and the recess (12) of the other communication member (6) are at the same position in the front-rear direction. Note that the mouth portion (7) of one communication member (6) is formed between both concave portions (12). A through hole (7a) is formed in the mouth (7) from the outer end, and a female screw (7b) used for mounting a control valve, for example, is provided on the inner peripheral surface of the through hole (7a). 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 surface of the peripheral wall in close contact with the peripheral edge of the left and right outer surface of the end plate (5). Has been. A joining bead between the communicating member (6) and the end plate (5) is indicated by (11). 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 made of the same material, or at least one of them may be made of different materials.

  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). For example, carbon fibers, glass fibers, and aramid fibers are used as the reinforcing fibers constituting the fiber reinforced resin layers (21), (22), and (23), 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.

  The in-plane wound fiber layer constituting the in-plane wound fiber reinforced resin layer (22) is a recess (12) in which the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is in the same position with respect to the front-rear direction of both communicating members (6). The in-plane wound fiber reinforced resin layer (22) is formed in parallel with the axial direction of the liner (3). The helically wound fiber layer constituting the helically wound fiber reinforced resin layer (23) includes the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle in the recesses (12) at different positions with respect to the front-rear direction of both communicating members (6). The helically wound fiber reinforced resin layer (23) is formed so as to be inclined with respect to the axial direction of the liner (3).

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

  First, the container structure (2) is manufactured by the method shown in FIGS. 5 shows a method for manufacturing the container structure (2) located at one end in the alignment direction, and FIG. 6 shows a method for manufacturing the container structure (2) positioned in the middle in the alignment 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. It forms (refer FIG. 5 (a) and FIG. 6 (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. 5 (b) and 6 (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 primary fiber reinforced resin layer (4), thereby manufacturing the container structure (2) (see FIGS. 5 (c) and 6 (c)).

  Further, two dome-shaped communicating members (6) having two concave portions (12) are manufactured by forging, die casting or cutting. One communication member (6) is formed with a mouth (7).

  Next, all the container components (2) are arranged in parallel so that their axes are located in the same horizontal plane and both left and right ends are located in the same vertical plane, and the container components (2) face outward. The side edges of the flanges (8A) and (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. 7).

  Next, the communication member (6) and the end plate (5) are friction stir welded 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 outer peripheral edge portions of both end plates (5). Make the pressure vessel body (10).

  Thereafter, the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is wound so as to be substantially perpendicular to the axial direction of the liner (3) so as to connect all the container components (2) to form a hoop-wrapped fiber layer. . Also, the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is fitted in a direction parallel to the axial direction of the liner (3) so that the resin-impregnated reinforcing fiber bundle fits in the recess (12) at the same position in the front-rear direction of both communicating members (6). Winding to form an in-plane wound fiber layer. Further, the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is inclined with respect to the axial direction of the liner (3) so that the resin-impregnated reinforcing fiber bundle fits into the recesses (12) at different positions with respect to the front-rear direction of the two communicating members (6). Winding in the direction forms a helically wound fiber layer. Then, by curing the resin, a hoop wound fiber reinforced resin layer (21), an in-plane wound fiber reinforced resin layer (22) and a helical wound fiber reinforced resin layer (23) are formed, and a secondary fiber reinforced resin layer ( 20).

  Thus, the pressure vessel (1) is manufactured.

In Reference Example 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 Reference Example 1 , 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, the outer flange (8A) (8B) may be made of aluminum separate from the liner (3). 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 communication member (6) and the end plate (5) are performed in the same manner as in the first embodiment .

In the above Reference Example 1 , the number of container structural bodies (2) can be changed as appropriate. When the number of container constituents (2) is two in Reference Example 1 , two container constituents (2) located at both ends (front and rear ends) in the arrangement direction in FIG. 1 are used. In the above Reference Example 1 , the diameters of the liners (3) of all the container components (2) are the same, but the diameter is not limited to this, and the liner (3 of the at least one container component (2) is not limited thereto. ) May have different diameters.

Reference example 2
This reference example is shown in FIG.

In the case of the pressure vessel (40) of this reference example, the two convex portions as the slip prevention portions are formed at the front and rear side portions at the top of the outer surface of each dome-shaped communication member (6) and spaced apart in the front-rear direction. A convex portion pair (42) composed of a portion (41) is formed. The convex portion pair (42) of one communication member (6) and the convex portion pair (42) of the other communication member (6) are in the same position in the front-rear direction. Note that the mouth portion (7) formed in one communication member (6) is formed at a position between the pair of convex portions (42).

  The secondary fiber reinforced resin layer (20) formed so as to straddle all the container components (2) includes a hoop wound fiber reinforced resin layer (21), an in-plane wound fiber reinforced resin layer (22), and a helical wound fiber. It consists of a reinforced resin layer (23). The in-plane wound fiber layer constituting the in-plane wound fiber reinforced resin layer (22) includes a pair of convex portions (resin-impregnated reinforcing fiber or resin-impregnated reinforcing fiber bundle in the same position with respect to the front-rear direction of both communicating members (6)). 42) is formed by being wound so as to fit between both convex portions (41), whereby the in-plane wound fiber reinforced resin layer (22) is formed in parallel to the axial direction of the liner (3). . The helically wound fiber layer constituting the helically wound fiber reinforced resin layer (23) is a pair of convex portions (42) in which the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is located at different positions with respect to the front-rear direction of both communicating members (6). The helically wound fiber reinforced resin layer (23) is formed so as to be inclined with respect to the axial direction of the liner (3). Yes.

Other configurations are the same as those of the pressure vessel (1) of Reference Example 1 .

Reference example 3
This reference example is shown in FIG. 9 and FIG.

In the case of the pressure vessel (45) of this reference example , the lengths of the liners (3) of all the container components (2) of the pressure vessel main body (46) are equal, and all the liners (3) have the same vertical both left and right ends. They are arranged so that they are in-plane. The left ends of all the container components (2) are connected and integrated in the same manner as in Reference Example 1 , and the mouth (7) extends over the left ends of all the liners (3). A dome-shaped communication member (6) having the structure is joined, the interiors of all the liners (3) are communicated with each other, and the left end openings of all the liners (3) are closed.

  At the right end of each liner (3), a substantially bowl-shaped (dome-shaped) closure member (47) (closed portion) made of metal, here aluminum, is joined from the outer periphery by an appropriate method, for example, friction stir welding. The right end opening of each liner (3) is closed by the closing member (47). Each liner (3) and the closing member (47) may be integrally formed by forging.

  On the outside of the closing members (47) of all the liners (3), a slip prevention member (48) made of a metal such as resin or aluminum is disposed so as to straddle these closing members (47). . A recess (49) into which all the closing members (47) are fitted is formed on the left side surface of the slip prevention member (48). In addition, the lateral portion of the cross-section of the slip prevention member (48) in the left-right direction (liner axis direction) is rounded so that the intermediate portion in the height direction protrudes to the right when viewed from the front. The outer surface in the left-right direction of the slip prevention member (48) is a partial cylindrical surface (48a).

  The secondary fiber reinforced resin layer (20) formed so as to straddle all the container components (2) includes a hoop wound fiber reinforced resin layer (21), an in-plane wound fiber reinforced resin layer (22), and a helical wound fiber. It consists of a reinforced resin layer (23). The in-plane wound fiber layer constituting the in-plane wound fiber reinforced resin layer (22) fits the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle into each recess (12) of the communicating member (6) and prevents slippage. Formed by winding the member (48) so as to be applied to a position corresponding to each recess (12) with respect to the front-rear direction in the partial cylindrical surface (48a), the in-plane wound fiber reinforced resin layer (22) It is formed parallel to the axial direction of the liner (3). The helically wound fiber layer constituting the helically wound fiber reinforced resin layer (23) includes a resin-impregnated reinforcing fiber or a resin-impregnated reinforcing fiber bundle fitted into each recess (12) of the communicating member, and a part of the slip prevention member (48). The cylindrical surface (48a) is formed by winding so as to be applied to a position corresponding to a different recess (12) with respect to the front-rear direction, whereby the helically wound fiber reinforced resin layer (23) is formed in the axial direction of the liner (3). It is formed so as to be inclined with respect to.

Other configurations are the same as those of the pressure vessel (1) of Reference Example 1 .

Embodiment 1
This embodiment is shown in FIG.

In the case of the pressure vessel (50) of this embodiment, the lengths of the liners (3) of all the container components (2) of the pressure vessel main body (51) are equal, and all the liners (3) have the same vertical at both left and right ends. They are arranged so that they are in-plane. The left end portions of the two front liners (3) and the right end portions of the two rear liners (3) are connected and integrated in the same manner as in Reference Example 1 , and the front two A dome-shaped communication member (6) is joined so as to straddle the left end of the two liners (3) and the right end of the two rear liners (3), and the interiors of these liners (3) communicate with each other. In addition, the left end opening of the two adjacent liners (3) on the front side and the right end opening of the two adjacent liners (3) on the rear side are closed.

  A closing member (47) is joined to the right end portion of the liner (3) at the front end portion from the outer peripheral side by an appropriate method, for example, friction stir welding, and the right end opening of the liner (3) is opened by the closing member (47). It is closed. Further, a closing member (47) having a mouth portion (7) is joined to the left end portion of the liner (3) at the rear end portion from the outer peripheral side by an appropriate method, for example, a friction stir welding method. ) Closes the left end opening of the liner (3). The liner (3) and the closing member (47) may be integrally formed by forging.

A slip prevention member formed of a resin or a metal such as aluminum so as to straddle the communication member (6) and the closure member (47) on the outside of the communication member (6) and the closure member (47) at the left and right ends, respectively. (52) is arranged. Recesses (53) and (54) into which the communicating member (6) and the closing member (47) are fitted are formed on the inner surface in the left-right direction of each deviation preventing member (52). In addition, the outer part in the horizontal direction (liner axis direction) of the cross section of each misalignment prevention member (52) is rounded so that the middle part in the height direction protrudes outward in the horizontal direction when viewed from the front. Here, the outer surface in the left-right direction of the slip prevention member (52) is a partial cylindrical surface (52a). The left slip prevention member (52) is formed with a through hole (55) for exposing the mouth (7) of the closing member (47) to the outside.

  The secondary fiber reinforced resin layer (20) formed so as to straddle all the container components (2) includes a hoop wound fiber reinforced resin layer (21), an in-plane wound fiber reinforced resin layer (22), and a helical wound fiber. It consists of a reinforced resin layer (23). The in-plane wound fiber layer constituting the in-plane wound fiber reinforced resin layer (22) is a resin-impregnated reinforcing fiber or a resin-impregnated reinforcing fiber bundle with respect to the front-rear direction on the partial cylindrical surface (52a) of the shift preventing member (52). The in-plane wound fiber reinforced resin layer (22) is formed so as to be wound at the same position, whereby the in-plane wound fiber reinforced resin layer (22) is formed parallel to the axial direction of the liner (3). The helically wound fiber layer constituting the helically wound fiber reinforced resin layer (23) is configured so that the resin-impregnated reinforcing fiber or the resin-impregnated reinforcing fiber bundle is placed at different positions with respect to the front-rear direction on the partial cylindrical surface of the misalignment preventing member (52). Thus, the helically wound fiber reinforced resin layer (23) is formed so as to be inclined with respect to the axial direction of the liner (3).

Other configurations are the same as those of the pressure vessel (1) of Reference Example 1 .

Embodiment 2
This embodiment is shown in FIG.

In the case of the pressure vessel (60) of this embodiment, the lengths of the liners (3) of all the container components (2) of the pressure vessel main body (61) are different, and all the liners (3) have the left end at the left end. They are arranged so as to be located in the same vertical plane. The left end portions of all liners (3) are connected and integrated in the same manner as in Reference Example 1 , and have a mouth portion (7) so as to straddle the left end portions of these liners (3). The dome-shaped communication member (6) is joined, the interiors of these liners (3) are communicated with each other, and the left end openings of these liners (3) are closed.

  A closing member (47) 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 the liner (3) is closed by the closing member (47). ing. The liner (3) and the closing member (47) may be integrally formed by forging.

  A slip prevention member (62) made of resin or metal such as aluminum is disposed outside the communication member (6) at the left end. A recess (63) into which the communication member (6) is fitted is formed on the inner surface in the left-right direction of the slip prevention member (62). The slip prevention member (62) has a through hole (66) for exposing the mouth (7) to the outside. In addition, a slip prevention member (64) made of a resin or a metal such as aluminum is disposed outside each closing member (47) at the right end. A recess (65) into which the closing member (47) is fitted is formed on the inner surface in the left-right direction of each deviation preventing member (64). The outer part in the left-right direction (liner axis direction) in the cross section of each deviation prevention member (62) (64) is rounded so that the middle part in the height direction protrudes outward in the left-right direction when viewed from the front. Here, the laterally outer surfaces of the slip prevention members (62) (64) are partial cylindrical surfaces (62a) (64a).

  The secondary fiber reinforced resin layer (20) formed so as to straddle all the container components (2) includes a hoop wound fiber reinforced resin layer (21), an in-plane wound fiber reinforced resin layer (22), and a helical wound fiber. It consists of a reinforced resin layer (23). The in-plane wound fiber layer constituting the in-plane wound fiber reinforced resin layer (22) includes a resin-impregnated reinforcing fiber or a resin-impregnated reinforcing fiber bundle arranged on the outer side of each closing member (47) and a slip prevention member (64). The partial cylindrical surface (64a) and the partial cylindrical surface (62a) of the displacement preventing member (62) disposed outside the communication member (6) are located at the same position as the right displacement preventing member (64) in the front-rear direction. Thus, the in-plane wound fiber reinforced resin layer (22) is formed in parallel with the axial direction of the liner (3). The helically wound fiber layer constituting the helically wound fiber reinforced resin layer (23) is a portion of the slip prevention member (64) disposed on the outside of each closing member (47) with the resin impregnated reinforcing fiber or the resin impregnated reinforcing fiber bundle. The cylindrical surface (64a) and the displacement prevention member (62) arranged outside the communication member (6) are placed at different positions from the right displacement prevention member (64) in the longitudinal direction on the partial cylindrical surface (62a). The helically wound fiber reinforced resin layer (23) is formed so as to be inclined with respect to the axial direction of the liner (3).

Other configurations are the same as those of the pressure vessel (1) of Reference Example 1 .

In the pressure vessels (40), (45), (50), and (60) of Reference Examples 2 to 3 and Embodiments 1 and 2 , the resin liner (3) may be used. In this case, as described in Reference Example 1 , the liner (3) is connected and integrated.

  13 and 14 show a modification of the pressure vessel body used for the pressure vessel.

  In the case of the pressure vessel main body (10A) shown in FIG. 13, both end plates (5) are one metal plate having a through hole (31) into which the open end of the liner (3) is fitted, in this case 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.

Also in the pressure vessel main body (10A) shown in FIG. 13, the liner (3) is made of resin, and all liners (3) and end plates (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 joining of the communicating member (6) and the end plate (5) is performed in the same manner as in Reference Example 1 .

  In the case of the pressure vessel main body (10B) shown in FIG. 14, the end plate (5) is not used, and both ends of the liner (3) of the adjacent vessel constituting body (2) are made of metal, here aluminum. They are connected and integrated through a plate-like connecting member (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.

  Also in the pressure vessel shown in FIG. 14, a resin liner 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.

Pressure vessel in a pressure vessel of the above embodiments 1-2, and in the modification of the pressure vessel body, the liner is a cylindrical, but the invention is not limited thereto, may be non-cylindrical.

It is a top view which shows the pressure vessel of the reference example 1 . It is a perspective view which shows the pressure vessel main body of the pressure vessel of FIG. It is a horizontal sectional view of the pressure vessel main body of FIG. 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. 6 is a partially cutaway plan view showing a pressure vessel of Reference Example 2. FIG. 10 is a partially cutaway plan view showing a pressure vessel of Reference Example 3. FIG. FIG. 10 is a sectional view taken along line XX in FIG. 9. It is a partially notched top view which shows the pressure vessel of Embodiment 1 of this invention. It is a partially notched top view which shows the pressure vessel of Embodiment 2 of this invention. It is the disassembled perspective view which showed the modification of the pressure vessel main body in the pressure vessel of this invention, and abbreviate | omitted the communication member. It is the disassembled perspective view which showed the other modification of the pressure vessel main body in the pressure vessel of this invention, and abbreviate | omitted the communication member.

Explanation of symbols

(50) (60): Pressure vessel
(2): Container structure
(3): Liner
(4): Fiber reinforced resin layer
(5): End plate
(6): Domed communication member (closed part)
(7): Mouth
(20) : Secondary fiber reinforced resin layer
(21): Hoop-wrapped fiber reinforced resin layer
(22): In-plane wound fiber reinforced resin layer
(23): helical winding fiber-reinforced resins layer
(47) : Closing member (closing part)
(52) (62) (64): Deviation prevention member

Claims (21)

A plurality of first and second fiber reinforced resin layers each having a cylindrical liner having both end openings closed by a closing portion, and a reinforcing fiber wound in the circumferential direction on the outer peripheral surface of the liner and covering the outer peripheral surface of the liner And a second fiber reinforced resin layer having reinforcing fibers wound in the length direction of the container structure so as to cover both closed portions of the liner,
A plurality of container constituents are arranged in parallel so that the axis of the liner is located in the same horizontal plane and face the same direction, and the reinforcing fibers of the second fiber reinforced resin layer are arranged so as to cover both ends of the liner. When the winding prevention member is arranged and the direction in which the plurality of container constituents are arranged is the front-rear direction, the outer side portion of the liner in the axial direction in the cross section of the slip prevention member is orthogonal to the horizontal plane when viewed from the front. The middle portion of the direction is rounded so as to protrude outward in the axial direction of the liner, and the protruding end portion extends linearly in the front-rear direction, and the second fiber reinforced resin layer is applied to the both-shift preventing member Thus, the pressure vessel which has the reinforcing fiber wound around the length direction of the container structure. A plurality of containers constructs are integrated with, with all the container structure liner inside each other in is communicated by the liner of all container structure is between one closed space is formed, providing communication with the closed space to the outside 1 The pressure vessel according to claim 1, comprising two mouths. At least one of the closing portions is fixed across the open end portions of the liners of at least two adjacent container components, and bulges outward to pass through the interiors of the liners of at least two adjacent container components. The pressure vessel according to claim 2, comprising a dome-shaped communication member. All container component liners are equal in length, both closures are secured across the open ends of all container component liners, and the interior of all container component liners The pressure vessel according to claim 2, comprising a dome-shaped communication member bulging outwardly through which one of the dome-shaped communication members is provided. The end plate is provided in a fixed manner across the open ends of the liners of at least two adjacent container constituents, and the peripheral edge of the dome-shaped communication member is joined to the peripheral edge of the end plate. Pressure vessel. 6. The pressure vessel according to claim 5, 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 6, wherein the liner and the outward flange are made of aluminum, and the outward flanges are friction stir welded. 6. The pressure according to claim 5, wherein the end plate is made 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 8, 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 5 to 9, 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. Between the open ends of the liners of at least two adjacent container components, a plate-like connecting member having a notch into which the open ends of the liners on both sides are fitted is disposed, and a portion around the notch in the connecting member and the liner The pressure vessel according to claim 3 or 4, wherein the opening end is joined, and the peripheral edge of the dome-shaped communication member is joined to the opening end of the connecting member and the liner. The pressure vessel according to claim 11, 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 11 or 12, 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. The pressure according to any one of claims 1 to 13, wherein at least one of the closing portions is formed of a dome-like closing member fixed to an opening end portion of a liner of each container constituent body and bulging outward. container. A pressure vessel for fuel hydrogen, a fuel cell, and a pressure pipe for sending fuel hydrogen gas from the pressure vessel for fuel hydrogen to the fuel cell are provided, and the pressure vessel for fuel hydrogen is according to any one of claims 1 to 14. A fuel cell system consisting of pressure vessels. A fuel cell vehicle equipped with the fuel cell system according to claim 15. A cogeneration system comprising the fuel cell system according to claim 15. 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. . A cogeneration system comprising the natural gas supply system according to claim 18, a generator, and a generator driving device. A natural gas vehicle comprising the natural gas supply system according to claim 18 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 14.

Images