JP2019032034A - High pressure container - Google Patents

Abstract

To provide a high pressure container that is increased in assemblability in which a plurality of small tanks each have one end side coupled to a manifold and the other end side coupled to a fitting member.SOLUTION: When a high pressure container 10 is assembled, an insert part 78A of a manifold 16 is inserted into an outer communication hole 60A of each container body 12 first, and the container body 12 is rotated to threadably engage the insert part 78A with the outer communication hole 60A of a first mouthpiece 32A. One axial end side of the container body 12 is fixed to the manifold 16, and the inside of the container body 12 is linked to the outside through a communication flow passage 82A of the manifold 16. Then a coupling member 20 is made to abut on the other axial end side of a second mouthpiece 32B of the container body 12, a bolt 22 is inserted into respective second outer communication holes 60B from an insertion hole 90 to be threadably engaged with the second outer communication holes 60B, so that the other axial end side of the container body 12 can be fixed to the coupling member 20.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a high pressure vessel.

  Fuel cell vehicles have been proposed that run on electric power generated by a fuel cell. In such an automobile, it is considered to arrange a hydrogen gas tank at the lower part of the floor of the passenger compartment. In this case, due to space limitations, multiple high-pressure vessels that arrange multiple small tanks (hereinafter “small tanks”), connect the caps formed at one end of these with a manifold, and adjust the flow rate with a single valve. Is considered to constitute.

  At this time, it has been studied to increase the rigidity of the high-pressure vessel by connecting the caps disposed at the other end portions of the plurality of small tanks with a connecting member.

JP 2002-188794 A

  By the way, as described above, when attaching one end side of a plurality of small tanks to the manifold, the mounting portion in which the male screw portion is formed on the outer peripheral portion of the manifold is replaced with the female screw portion of the external communication hole formed in the base. It is conceivable to screw them together. That is, it is possible to attach each small tank by rotating it relative to the manifold.

  On the other hand, when the other end of the small tank is attached to the attachment member, the small tank fixed to the manifold cannot be rotated.

  In view of the above facts, the present invention has an object to provide a high-pressure vessel having improved assembly property in a high-pressure vessel in which one end side of a plurality of small tanks is connected to a manifold and the other end side is connected to a mounting member. To do.

  The high-pressure vessel according to the first aspect of the present invention includes a body portion formed in a substantially cylindrical shape, and is attached to one end side in the axial direction of the body portion so as to close the one end side in the axial direction and the inside of the body portion. And a first base having a first external communication hole formed with an internal thread on the inner peripheral surface thereof, and attached to the other axial end side of the body portion to close the other axial end side And a plurality of small tanks each having a second base having a second external communication hole in which an internal thread is formed on the inner peripheral surface thereof, and the inside and the outside of the body portion are communicated with each other. Each of the first external communication holes has a plurality of insertion portions each having an external thread formed on the outer peripheral surface thereof, and a connecting portion that connects the plurality of insertion portions to each other. A first manifold having an external communication channel communicating with the outside, and each front A plurality of insertion holes corresponding to the second communication holes of the small tank are formed, a connecting member that is in contact with the other axial end of each of the second caps, and each of the second external parts inserted through the insertion holes. A closing screw that is screwed into the communication hole and closes the second external communication hole.

  According to the first aspect of the present invention, the small tank includes a substantially cylindrical body part, a first base that closes one end side in the axial direction of the body part, and a second base that closes the other end side in the axial direction. Have. In addition, the first base and the second base are respectively provided with a first external communication hole and a second external communication hole in which the inside and the outside of the body portion are communicated and a female screw is formed on the inner peripheral surface. Yes.

  On the other hand, the manifold has a plurality of insertion portions that are formed with male screw portions on the outer peripheral surface and can be screwed into the first external communication holes.

  Therefore, when assembling the high pressure vessel, first, the insertion portion of the manifold is inserted into the first external communication hole of each small tank, and the small tank is rotated so that the insertion portion is inserted into the first external communication hole of the first cap. Screw together. As a result, one end side in the axial direction of each small tank is fixed to the manifold, and the inside of the small tank (body portion) is communicated with the communication channel of the manifold and communicated with the outside via the manifold.

  On the other hand, the connecting member is formed with an insertion hole corresponding to the second external communication hole of each small tank, and can be brought into contact with the other axial end of the second base.

  Therefore, by bringing the connecting member into contact with the other axial end of the second base of each small tank attached to the manifold, inserting a closing screw from the insertion hole into each second external communication hole, and screwing them together, A small tank can be fixed to the connecting member.

  In this manner, the plurality of small tanks are fastened to the manifold on one end side in the axial direction, and fastened to the connecting member with the closing screw on the other end side, whereby the assembly of the high-pressure vessel is easily performed. Thus, since the both ends of several small tanks are being fixed to the manifold and the connection member, the rigidity of a high pressure vessel improves.

  The high-pressure container according to a second aspect of the present invention is the high-pressure vessel according to the first aspect of the present invention, wherein the closing screw is formed at a screw portion having a male screw formed on the outer peripheral surface and at an axial end of the screw portion. A head having a diameter larger than that of the screw portion, and the screw portion includes an axial flow path extending in an axial direction from an axial tip portion, and the head portion side of the axial flow path from the head side. A radial flow path extending to the outer peripheral surface of the screw portion is formed, and when the closing screw is screwed into the second external communication hole, the plurality of radial flow paths are formed on the connecting member. Is connected to the outside, and an opening that is closed during normal use is formed at one end of the communication channel.

  According to the invention described in claim 2, the closing screw has an axial flow path extending in the axial direction from the tip of the screw portion, and an end extending in the radial direction from the head side of the axial flow path. A radial flow path opened in the outer peripheral surface is formed. The connecting member is formed with a communication channel that communicates the plurality of radial channels when the closing screw is screwed into the second external communication hole. An opening communicating with the outside is formed at one end of the communication channel.

  Therefore, when the high pressure vessel is assembled, the connecting member is brought into contact with the other axial end of the second base, and the closing screw is screwed into the second external communication channel of the second base from the insertion hole of the connecting member. Thus, the other axial end of the small tank is fixed to the connecting member. At this time, the radial flow path of the closing screw communicates with the communication flow path of the connecting member, and the inside of the small tank is opened via the axial flow path of the closing screw, the radial flow path, and the connecting flow path of the connecting member. Will communicate.

  Therefore, if the opening of the communication channel is opened to the outside during the expansion test, when water is injected into the high-pressure vessel from the manifold side, the air remaining in the high-pressure vessel (for example, in the small tank) is opened. Discharged from. That is, water can be quickly filled into the high-pressure vessel.

  The high-pressure vessel according to the present invention as set forth in claim 1 is excellent in assemblability and has improved rigidity because both ends of a plurality of small tanks are fixed to the manifold and the connecting member.

  The high-pressure vessel according to the present invention described in claim 2 can shorten the water filling time at the time of expansion inspection (expansion measurement inspection) and improve inspection efficiency.

(A) is the top view which looked at the high pressure container which concerns on 1st Embodiment from vehicle upper direction, (B) is the front view which looked at the high pressure container from the vehicle front, (C) is a high pressure container from the vehicle rear surface. It is the rear view seen, (D) is the side view which looked at the high pressure vessel from the vehicle side. It is a disassembled perspective view of the high pressure container which concerns on 1st Embodiment. It is principal part sectional drawing of the high pressure container which concerns on 1st Embodiment. It is principal part sectional drawing of the 1st nozzle | cap | die vicinity of the high pressure container which concerns on 1st Embodiment. It is principal part sectional drawing of the 2nd nozzle | cap | die vicinity of the high pressure container which concerns on 1st Embodiment. It is principal part sectional drawing of a high pressure container. In the high-pressure vessel concerning a 1st embodiment, it is an important section sectional view showing the attachment state of the high-pressure vessel with respect to a manifold. In the high pressure vessel concerning a 1st embodiment, it is an important section sectional view showing the attachment state of a high pressure vessel to an attachment member. It is a schematic side view which shows the fiber of the 2nd reinforcement layer of the high pressure container which concerns on 1st Embodiment. It is the schematic which shows the fiber of the 2nd reinforcement layer in the axial direction outer side edge part of the high pressure container which concerns on 1st Embodiment by axial direction view. It is principal part sectional drawing which shows the 2nd manifold vicinity of the high pressure vessel which concerns on 2nd Embodiment. (A), (B) is a side view of the volt | bolt which concerns on 2nd Embodiment. In the high pressure vessel concerning a 2nd embodiment, it is an important section sectional view showing the attachment state of the high pressure vessel to the 2nd manifold. It is a schematic block diagram of the inspection apparatus which concerns on 2nd Embodiment. It is sectional drawing which shows the piping connection state of the test | inspection apparatus with respect to the high pressure vessel which concerns on 2nd Embodiment.

[First Embodiment]
Hereinafter, the first embodiment of the high-pressure vessel according to the present invention will be described with reference to FIGS. In these drawings, the arrow FR indicates the front side in the vehicle front-rear direction, the arrow W indicates the vehicle width direction, and the arrow UP indicates the upper side in the vehicle vertical direction. Moreover, in order to avoid the complication of a figure in each figure, about the same member, only the one part member may attach | subject a reference code, and the reference code about another member may be abbreviate | omitted.

(Configuration of the first embodiment)
As shown in FIGS. 1A to 1D and FIG. 2, the high-pressure container 10 includes a plurality of first container bodies 12, a plurality of second container bodies 14, a first container body 12, and a second container. A manifold 16 communicating with one axial end (front side in the vehicle front-rear direction) of the main body 14, a flow rate adjusting valve 18 attached to the manifold 16 (see FIG. 2, not shown in FIG. 1), and a first container main body 12 and the second container body 14 are connected to the other axial end portion (rear side in the vehicle front-rear direction) and the other end portion in the axial direction between the first container body 12 and the second container main body 14 And a bolt 22 for closing or opening the rear side. The first container body 12 and the second container body 14 correspond to small tanks. The bolt 22 corresponds to a closing screw.

  As an example, the high-pressure vessel 10 is disposed along the floor panel on the vehicle lower side of the floor panel (not shown) of the fuel cell vehicle.

  As shown in FIG. 1A and FIG. 2, the difference between the first container body 12 and the second container body 14 is only the length, so the first container body 12 will be described, and the second container body 14 will be described. Is omitted.

  As shown in FIG. 2, the first container body 12 is formed in a substantially cylindrical shape with the vehicle front-rear direction as the axial direction (longitudinal direction). As shown in FIG. 3, the first container body 12 is provided on a body portion 30 that is formed in a cylindrical shape and extends in the vehicle front-rear direction, and on one end portion in the axial direction of the body portion 30 (front side in the vehicle front-rear direction). The first base 32 </ b> A and a second base 32 </ b> B provided at the other axial end portion (rear side in the vehicle front-rear direction) of the body portion 30 are configured. In some cases, the first base 32A side or the second base 32B side from the axial center of the first container body 12 is referred to as “axially outer side”, and the opposite side is referred to as “axially inner side”.

  As shown in FIG. 4, the body portion 30 is formed by winding a liner 36 formed of an aluminum alloy as an example and a sheet-like CFRP (carbon fiber reinforced resin) around the outer periphery of the liner 36. The first reinforcing layer 38 and the second reinforcing layer 39 are formed. In the first reinforcing layer 38, carbon fibers (not shown) in the fiber reinforced resin are arranged along the circumferential direction of the liner 36 and the body portion 30. The second reinforcing layer 39 is arranged so that carbon fibers (not shown) in the fiber reinforced resin intersect in the axial direction. Furthermore, both end portions on the axially outer side of the second reinforcing layer 39 extend outward in the axial direction from both axial end portions of the liner 36.

  As shown in FIG. 8, the fibers 33 of the second reinforcing layer 39 are wound around the outer ends in the axial direction of the first base 32A and the second base 32B. Specifically, as shown in FIG. 9, it is wound linearly in the vicinity of the root portion 34A (see FIG. 8) of the protruding portion 42A of the first base 32A. In other words, the fiber 33 is wound around near the geodesic line at the axially outer end of the first base 32A. As shown in FIG. 8, the fiber 33 wound around the first base 32A is wound on the first reinforcing layer 38 of the body portion 30 toward the second base 32B at an angle θ with respect to the axial direction. (So-called helical winding). Thereby, the fiber 33 is urged | biased by the base part 34A side of 42 A of protrusion parts in the axial direction outer side edge part of the 1st nozzle | cap | die 32A.

  The fiber 33 is similarly wound around the second base 32B.

  The first reinforcing layer 38 and the second reinforcing layer 39 are baked and integrated at the same timing, but are illustrated as separate members for convenience of explanation.

  As shown in FIG. 4, the first base 32 </ b> A includes a substantially hemispherical main body 40 </ b> A and a cylindrical protrusion 42 </ b> A that protrudes outward in the axial direction from the axial center of the main body 40 </ b> A.

  On the outer peripheral surface of the main body 40A, a rotating recess 44A for accommodating the end of the liner 36 is formed on the other end side in the axial direction, and a radially inner side is further inward in the axial direction of the recess 44A. A packing housing portion 46A is formed by cutting out into a portion. In this packing accommodating portion 46A, an O-ring 48A and a backup ring 49A are accommodated on the outer side in the axial direction of the O-ring 48A, thereby ensuring airtightness between the liner 36 and the first base 32A.

  In addition, a bottomed cylindrical recess 52A that is recessed in the axially outer side at the axial center is formed on the axially inner end surface (hereinafter referred to as “inner end surface”) 50A of the main body 40A. The recessed portion 52A includes a tapered portion 54A that decreases in diameter toward the outer side in the axial direction, and a cylindrical columnar portion 56A that extends outward in the axial direction from the outer end portion in the axial direction of the tapered portion 54A. The bottom surface 58A of the recess 52A is formed with an external communication hole 60A that communicates with the outside.

  Further, on the inner end face 50A, bottomed cylindrical screw holes 62A are formed at four locations at regular intervals in the circumferential direction on the radially outer side of the recess 52A.

  Furthermore, a plurality of insertion holes 66A are formed at predetermined intervals in the circumferential direction in the ring-shaped holding plate 64A that is in contact with the inner end surface 50A. The holding plate 64A is attached to the inner end face 50A by screwing a bolt 68A into a screw hole 62A formed in the inner end face 50A via the insertion hole 66A. Accordingly, the O-ring 48A is prevented from falling off from the packing housing portion 46A.

  Further, an internal thread is formed on the inner peripheral surface of the external communication hole 60A extending from the bottom surface 58A of the recess 52A of the first base 32A to the outer end in the axial direction, and an insertion portion 78A of the first manifold 16 described later is formed. It is the structure screwed together.

  Furthermore, a circumferential fitting groove 74A into which the O-ring 72A is fitted is formed in the axially outer end face (hereinafter referred to as “outer end face”) 70A of the protrusion 42A of the first base 32A.

  As shown in FIGS. 1A and 2, the first manifold 16 to which the first base 32A is attached has a disk portion 76A formed in a disk shape having a diameter corresponding to the outer end surface 70A of the first base 32A. An insertion portion 78A (see FIG. 4) that protrudes inward in the axial direction from the disc portion 76A and is screwed into the external communication hole 60A, and a rod-like connection portion 80A that connects the adjacent disc portions 76A and 76A. It has.

  Further, as shown in FIG. 3, a linear communication channel 82A extending in the vehicle width direction is formed inside the plurality of disk portions 76A and the connecting portion 80A. In addition, in each insertion portion 78A, there is formed an introduction / lead-out flow path 84A that extends in the axial direction and communicates the inside (recess 52A) of the first container body 12 and the communication flow path 82A.

  Further, as shown in FIG. 2, the first manifold 16 is formed with a connecting portion 86 that protrudes outward in the axial direction from one disc portion 76 </ b> A, and the connecting portion 86 is a valve that is a flow rate adjusting valve. 18 is attached. A common flow path 88 is formed inside the connecting portion 86, and the communication flow path 82A of the first manifold 16 and the valve 18 are communicated with each other. The communication channel 82A, the introduction / outflow channel 84A, and the common channel 88 of the first manifold 16 correspond to external communication channels.

  On the other hand, as shown in FIG. 5, the second base 32B has substantially the same configuration as the first base 32A. Therefore, the same reference numerals are assigned to the same components as those of the first base 32A, and detailed description thereof is omitted.

  Further, the connecting member 20 to which the second base 32B is attached has substantially the same outer shape as the manifold 16 as shown in FIG. Therefore, about the substantially same component, B is attached | subjected to the same reference number as the manifold 16, and the detailed description is abbreviate | omitted.

  As shown in FIG. 5, an insertion hole 90 (see FIG. 2) penetrating in the axial direction is formed in the disc portion 76 </ b> B of the connecting member 20. As shown in FIG. 5, the insertion hole 90 has a diameter wider than the diameter of the external communication hole 60B of the second base 32B. An O-ring 94 is accommodated in the fitting groove 92 around the insertion hole 90 on the outer end surface 91 of the disc portion 76B.

  The bolt 22 is inserted into the external communication hole 60B from the insertion hole 90 and screwed into the female screw of the external communication hole 60B, whereby the other axial end portions of the container main bodies 12 and 14 are fixed to the connecting member 20. It is a configuration.

  As shown in FIG. 5, the bolt 22 has a substantially cylindrical screw portion 98 in which a screw is formed on one end side of the outer peripheral surface, and is formed on the other end side of the screw portion 98 and has a diameter larger than that of the screw portion 98. And a head 96. Therefore, by screwing the bolt 22 into the first base 32A (external communication hole 60A) until the head portion 96 of the bolt 22 contacts the disc portion 76B (outer end surface 91) of the connecting member 20, the O-ring 72B, The airtightness of the container main bodies 12 and 14 is ensured by 94.

(Operation and effect of the first embodiment)
Next, the operation and effect of this embodiment will be described.

  When assembling the high-pressure vessel 10, as shown in FIG. 6, first, an O-ring 72 </ b> A is disposed in the fitting groove 74 </ b> A of the outer end surface 70 </ b> A of the first base 32 </ b> A of the first vessel body 12 </ b> A. The first base 32A of the first container body 12 is brought close to the insertion portion 78A, and the insertion portion 78A is inserted into the external communication hole 60A. At this time, the insertion portion 78A is screwed into the external communication hole 60A by rotating the first container body 12 (see FIG. 6, first container body 12B). Further, the inner end face 77A of the disc portion 76A of the manifold 16 is brought into contact with the outer end face 70A of the first base 32A, whereby the airtightness between the first base 32A and the manifold 16 is secured by the O-ring 72A.

  As a result, one end of the container body 12 in the axial direction is fixed to the manifold 16, and the common flow path 88, the communication flow path 82A, the introduction / outflow flow path 84A of the manifold 16 and the external communication hole 60A of the first base 32A are provided. The interior (concave portion 52A) of the container body 12 and the exterior (valve 18) communicate with each other. Similarly, all the container main bodies 12, 14 are fixed to the respective insertion portions 78 </ b> A of the manifold 16.

  Next, as shown in FIG. 7, in the state where the O-ring 72B is fitted in the fitting groove 74B of the outer end surface 70B of the second base 32B, the outer end surface 70B of the second base 32B of each container main body 12, 14 is formed. The disk portions 76B of the connecting member 20 are brought into contact with each other.

  Subsequently, the O-ring 94 is fitted into the fitting groove 92 formed in the outer end surface 91 of the disk part 76B of the connecting member 20, and the external communication hole 60B of the second base 32B is inserted from the insertion hole 90 of the disk part 76B. Bolt 22 is inserted into The coupling member 20 is fixed to the outer end face 70B of the second cap 32B of the container main bodies 12 and 14 by screwing the bolts 22 into the female screw portions of the external communication holes 60B (FIG. 7, first container main body 12B). reference). That is, the other axial end side of the container main bodies 12 and 14 is fixed to the connecting member 20.

  At this time, the airtightness between the second base 32B and the connecting member 20 and between the connecting member 20 and the bolt 22 is secured by the O-rings 72B and 94, respectively.

  Thereby, as shown in FIG. 1A, all the container main bodies 12 and 14 are fixed to the manifold 16 and the connecting member 20 at both ends, and are arranged at predetermined intervals in the vehicle width direction.

  As described above, in the high-pressure container 10 according to the present embodiment, each container body is formed by screwing the first cap 32A (external communication hole 60A) of each container body 12, 14 with the insertion portion 78A of the manifold 16. One end portion (first base 32 </ b> A) in the axial direction of 12 and 14 is fixed to the manifold 16. Thereafter, the disc portion 76B of the connecting member 20 is brought into contact with the outer end face 70B of the second cap 32B of each container body 12, 14, respectively, and the external communication hole 60B of the second cap 32B is inserted from the insertion hole 90 of the disc portion 76B. By screwing the bolts 22 to each other, the other axial end portions (second caps 32 </ b> B) of the container main bodies 12, 14 are fixed to the connecting member 20.

  In this manner, the high pressure vessel 10 can be simply obtained by simply rotating the vessel main bodies 12 and 14 and screwing the insertion portion 78A of the manifold 16 into the external communication hole 60A or screwing the bolts 22 into the vessel main bodies 12 and 14. Can be assembled.

  In particular, since each container body 12, 14 of the present embodiment has a helical winding of the fibers 33 of the second reinforcing layer 39, the protruding portion 42B of the second base 32B can be formed at the axial center of the container body 12, 14, and the protrusion An external communication hole 60B can be formed inside the portion 42B. Therefore, it can be set as the structure which attaches the connection member 20 easily with the volt | bolt 22 screwed together by the external communication hole 60B.

[Second Embodiment]
A high-pressure vessel 100 according to a second embodiment of the present invention will be described with reference to FIGS. In addition, the same referential mark is attached | subjected to the component similar to 1st Embodiment, and the detailed description is abbreviate | omitted. Moreover, since this embodiment differs in the point by which the flow path was formed inside the connection member 20 and the volt | bolt 22 of 1st Embodiment, only the said part is demonstrated. Furthermore, in the present embodiment, the manifold 16 of the first embodiment is referred to as a “first manifold 16” in order to distinguish it from a second manifold described later.

(Configuration of Second Embodiment)
In the high-pressure vessel 100, the second manifold 102 to which the other axial ends of the vessel bodies 12 and 14 are attached includes a connecting member 106 extending in the vehicle width direction and a bolt 108. The outer shapes of the connecting member 106 and the bolt 108 are substantially the same as the connecting member 20 and the bolt 108 of the first embodiment. Therefore, in the connecting member 106 and the bolt 108, the same components as the connecting member 20 and the bolt 108 are denoted by the same reference numerals as those of the connecting member 20 and the bolt 108, and detailed description thereof is omitted.

  As shown in FIG. 12, the connecting member 106 is formed with a communication flow path 104 that passes through the connecting portion 80B between the adjacent disc portions 76B and communicates between the insertion holes 90 of the disc portion 76B.

  As shown in FIGS. 11A and 11B, the bolt 108 includes an axial flow path 110 extending from the tip of the screw portion 98 along the axial center toward the head 96, and an axial flow path 110. A radial flow path 112 extending from the head side end portion to both sides in the radial direction and opening on the outer peripheral surface of the screw portion 98 is formed. The bolt 108 corresponds to a closing screw.

  The bolt 108 is screwed into the external communication hole 60B of the second base 32B, and the head 96 of the bolt 108 is in contact with the outer end surface 91 of the second manifold 102 (disk portion 76B). The radial flow path 112 is formed so that the opening of the directional flow path 112 and the opening of the communication flow path 104 face each other.

  Accordingly, the bolt 108 is screwed into the first base 32B (external communication hole 60B) until the head portion 96 of the bolt 108 abuts on the disc portion 76B of the connecting member 106, whereby the end portion (opening) of the communication channel 104 is opened. Portion) and the end (opening) of the radial flow path 112 face each other, and the communication flow path 104 and the radial flow path 112 communicate with each other. Further, the airtightness of the container body 12 is secured by the O-rings 72B and 94 when the bolt 108 is fastened.

  As shown in FIG. 10, the flow path extending in the substantially vehicle width direction, which is constituted by the communication flow path 104 and the radial flow path 112 in the second manifold 102, is referred to as a communication flow path 82B. One end portion in the vehicle width direction of the communication channel 82B of the second manifold 102 opens to the outside through the opening 120. An end cap 122 (see FIG. 10) is attached to the opening 120, and the opening 120 is closed (blocked from the outside) during normal use.

(Expansion inspection device)
Next, the expansion inspection apparatus described in the operation of this embodiment will be described.

  As shown in FIG. 13, the expansion inspection device 200 used for the expansion measurement test includes a holding device 202 that holds the high-pressure vessel 100 in a desired posture, and water that pressurizes the high-pressure vessel 100 by supplying water. Supply device 204.

  The holding device 202 includes a holder 206 that holds the container main bodies 12 and 14 constituting the high-pressure vessel 100, and a device main body 208 that can change the posture (inclination angle) of the high-pressure vessel 100 held by the holder 206.

  The water supply device 204 supplies water to the first manifold 16 from the storage tank 210 to which water is supplied, a supply pump 212 to be supplied to the first manifold 16 side of the high-pressure vessel 100, and the supply pump 212 from the storage tank 210. And supply piping 214 to be supplied.

  The water supply device 204 includes an exhaust pipe 216 that communicates the second manifold 102 side of the high-pressure vessel 100 and the storage tank 210, an open / close valve 218 disposed on the exhaust pipe 216, and a vacuum pump 220. .

(Operation and effect of the second embodiment)
As in the high pressure vessel 100 of the first embodiment, the high pressure vessel 100 is first screwed into the first cap 32A (external communication hole 60A) of each vessel body 12 and 14 to the insertion portion 78A of the manifold 16 when assembled. (See FIG. 6). Subsequently, as shown in FIG. 12, the disc portion 76B of the second manifold 102 is brought into contact with the outer end surface 70B of the second cap 32B of each container body 12, 14, and the second through the insertion hole 90 of the disc portion 76B. The second base 32B is fixed to the second manifold 102 by inserting the bolt 108 into the external communication hole 60B of the two base 32B and screwing the bolt 108 into the external communication hole 60B.

  As a result, as in the first embodiment, the high-pressure vessel 100 can be easily assembled, and only by assembling in this way (by screwing the bolt 108), the communication channel 104 of the second manifold 102 can be connected. A radial flow path 112 in the bolt 108 is communicated. As a result, the communication channel 82B of the second manifold 102 and the inside of the container bodies 12 and 14 are communicated with each other via the axial channel 110 of the bolt 108. That is, the second base 102B side of the container bodies 12 and 14 is communicated by the second manifold 102 only by performing a normal assembly operation.

  When performing an expansion inspection of the high-pressure vessel 10, first, as shown in FIG. 14, the valve 18 (see FIG. 2) is removed from the connecting portion 86 of the first manifold 16, and a plug 222 that is a seal member is attached to the connecting portion 86. Thus, the supply pipe 214 and the common flow path 88 of the connecting portion 86 are connected in an airtight and liquid tight manner.

  Next, the end cap 122 (see FIG. 10) is removed from the opening 120 formed at the end of the second manifold 102, and a plug 224 as a seal member is attached, so that the exhaust pipe 216 and the connecting portion 80B communicate with each other. The path 82B is connected in an airtight / liquid tight manner. At this time, the opening / closing valve 218 is opened (communication).

  In this way, the high-pressure vessel 100 (container main bodies 12 and 14) to which the supply pipe 214 and the exhaust pipe 216 are connected is held by the holder 206 of the apparatus main body 208, with the first manifold 16 side being the lower side and the second manifold 102 side being the upper side. The posture (tilt angle) is adjusted by the device main body 208 of the holding device 202 so as to be.

  In this state, the supply pump 212 is driven to supply each of the container bodies 12 and 14 from the storage tank 210 via the supply pipe 214, the common flow path 88 of the first manifold 16, the communication flow path 82A, and the introduction / outflow flow path 84A. Water flows into the interior.

  At this time, by driving the vacuum pump 220 on the exhaust pipe 216 in which the opening / closing valve 218 is opened, the air in the container main bodies 12, 14 causes the axial flow path 110 of the bolt 22 and the communication flow path of the second manifold 102. 82B, the plug 224 attached to the opening 120 of the communication channel 82B, and the exhaust pipe 216 are discharged to the storage tank 210.

  As described above, water is supplied from the lower end of the high-pressure vessel 100 and air is discharged from the upper end, so that the interior of the high-pressure vessel 100 such as the vessel main bodies 12 and 14 is efficiently filled with water. When it is confirmed that the entire high pressure vessel 100 is filled with water discharged from the exhaust pipe 216, the on-off valve 218 is closed.

  In this state, the supply pump 212 is further driven to increase the pressure inside the high-pressure vessel 10 until the pressure reaches a predetermined value. The amount of expansion of the high-pressure vessel 100 is measured by measuring the amount of increase (mass) of water in the high-pressure vessel 100 that has reached a predetermined pressure state.

  Thus, according to the expansion inspection method for the high-pressure vessel 100 according to the present embodiment, water is supplied from the lower end (first manifold 16) side of the high-pressure vessel 100 and air is discharged from the upper end (second manifold 102) side. By simply doing, water can be efficiently filled into the high-pressure vessel 100 constituted by the plurality of vessel bodies 12 and 14. Therefore, the water filling time when performing the expansion inspection is shortened, and the production (inspection) efficiency is improved.

  In particular, the high-pressure container 100 disposed below the floor panel of the passenger compartment is configured by combining a plurality of small-diameter container bodies 12 and 14 due to installation space restrictions. The introduction / outflow passage 84A formed in 32A has a small diameter. Therefore, when water is supplied to the container main bodies 12 and 14 from the introduction / extraction flow path 84A, it becomes difficult to discharge air from the introduction / derivation flow path 84A at the same time, and the container main bodies 12 and 14 are filled with water. May become difficult or may take a long time.

  However, in the method for inspecting the expansion of the high-pressure vessel 100 according to the present embodiment, the external communication hole 60B is provided in the second cap 32B of the vessel bodies 12 and 14, and the axial flow passage 110 and the radial flow passage 112 are formed there. The second manifold 102 and the inside of the container main bodies 12 and 14 are communicated with each other by screwing the bolts 22, and the inside of the container main bodies 12 and 14 is filled with water by filling the second manifold 102 and the exhaust pipe 216. The air can be discharged well to the outside.

  In addition to communicating the communication channel 82B (opening 120) of the second manifold 102 with the outside, the vacuum pump 220 provided in the exhaust pipe 216 applies a negative pressure to the inside of the high-pressure vessel 100. The discharge of air from the inside of the high-pressure vessel 100 and the injection of water into the inside of the high-pressure vessel 100 are further promoted.

  Further, when water is discharged from the high-pressure vessel 100 after the expansion test is completed, the communication between the communication channel 82B (opening 120) of the second manifold 102 and the outside is communicated with the second manifold 102 from the opening 120. By introducing air into the container main bodies 12 and 14 via the flow path 82B, water can be quickly discharged from the common flow path 88 via the communication flow path 82A of the first manifold 16.

  Further, since the second manifold 102 is attached to the high-pressure vessel 100 and the end of the communication channel 82B of the second manifold 102 is opened to the outside by the opening 120, the end cap that closes the opening 120 is provided. The exhaust pipe 216 can be easily connected to the container bodies 12 and 14 simply by removing 122 and connecting the plug 224.

  Further, since the fibers 33 of the second reinforcing layer 39 are helically wound in the container bodies 12 and 14, the protruding portion 42 </ b> B of the second base 32 </ b> B can be formed at the axial center, and the external communication hole 60 </ b> B can be formed therein. Therefore, the axial flow path 110 and the radial flow path 112 are formed inside the bolt 108, the communication flow path 104 that communicates between the insertion holes 90 adjacent to the connecting member 106 is formed, and the bolt is connected to the external communication hole 60 </ b> B. The second manifold 102 can be configured only by screwing 108.

  That is, the second manifold 102 is configured simply by fixing the end portions of the container main bodies 12 and 14 to the connecting member 106.

  In the first and second embodiments described above, the container main bodies 12 and 14 are screwed one by one to the insertion portion 78A of the first manifold 16, but a plurality of container main bodies 12 and 14 are simultaneously connected. You may screw together.

  In the second embodiment, the vacuum pump 220 on the exhaust pipe 216 is driven to apply a negative pressure to the high-pressure vessels 10 and 300 to discharge the internal air. However, even in a configuration without a vacuum pump. good.

  Furthermore, although the communication flow path 82B formed in the second manifold 102 of the second embodiment is bent because the lengths of the container bodies 12 and 14 are different, the lengths of the container bodies 12 and 14 should be unified. Thus, the shape may extend straight in the vehicle width direction. If comprised in this way, the air in the high pressure container 10 (container main bodies 12 and 14) will be discharged | emitted more smoothly, and test | inspection time can further be shortened.

  In addition, although the expansion inspection method for the high-pressure containers 10 and 100 in which hydrogen is accommodated is described, the present invention is not limited thereto, and can be applied to a high-pressure container in which other gases, liquids such as LPG, and the like are accommodated. is there.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above, and various modifications other than those described above can be implemented without departing from the spirit of the present invention. Of course.

10 High-pressure vessel 16 Manifold 20 Connecting member 22 Bolt (closure screw)
30 body part 32A first base 32B second base 60A external communication hole (first external communication hole)
60B External communication hole (second external communication hole)
82A Communication channel (external communication channel)
84A Inlet / outlet channel (external communication channel)
88 Common channel (External communication channel)
100 High-pressure vessel 104 Connecting flow path 106 Connecting member 108 Bolt (blocking screw)
110 Axial channel 112 Radial channel 120 Opening

Claims (2)

A body portion formed in a substantially cylindrical shape, attached to one end side in the axial direction of the body portion, closes the one end side in the axial direction, and communicates the inside and outside of the body portion to form a female screw on the inner peripheral surface The first base formed with the first external communication hole is attached to the other axial end side of the body portion, closes the other axial end side, and communicates the interior of the body portion with the outside. A plurality of small tanks having a second base having a second external communication hole formed with an internal thread on the inner peripheral surface;
A plurality of insertion portions each of which is insertable into the first external communication hole of each of the plurality of small tanks and has an external thread portion formed on an outer peripheral surface; and a connecting portion for connecting the plurality of insertion portions to each other; A first manifold in which an external communication channel communicating from the tip of each insertion portion to the outside is formed;
A plurality of insertion holes corresponding to the second external communication holes of each of the small tanks, and a connecting member that comes into contact with the other axial end of each of the second caps;
A closing screw that is inserted into the insertion hole and screwed into each of the second external communication holes to close the second external communication hole;
A high pressure vessel. The closure screw has a screw portion in which a male screw is formed on the outer peripheral surface, and a head portion that is formed at an axial end of the screw portion and has a diameter larger than that of the screw portion. An axial flow path extending in the axial direction from the tip of the axial direction, and a radial flow path extending from the head side of the axial flow path to the outer peripheral surface of the screw part, and
The connecting member is formed with a communication channel that communicates the plurality of radial channels when the closing screw is screwed into the second external communication hole, and one end of the communication channel. The high-pressure vessel according to claim 1, wherein an opening that communicates with the outside and is closed during normal use is formed.