JP2021179230A - High-pressure vessel - Google Patents

Abstract

To suppress an increase of a mass and a cost, and to improve reliability to a high-pressure fluid.SOLUTION: A high-pressure vessel 1 comprises: a flat resin-made liner 2 having a plurality of accommodation parts 6 for defining a plurality of cylindrical accommodation spaces 5 which are aligned in a prescribed alignment direction, and extend in parallel with one another in a prescribed longitudinal direction, and connection parts 8 for connecting the adjacent accommodation parts 6, and defining communication paths 7 for making the corresponding accommodation spaces 5 communicate with each other; a reinforcing cover body 3 for covering both faces and side faces of the liner 2; a mouthpiece 4 attached to the liner 2; and support members 20 which are arranged between outer faces of the connection parts 8 of the liner 2, and opposing inner faces of the reinforcing cover body 3, and supporting the connection parts 8 from the outside in order to prevent the expansion of the communication paths 7.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to high pressure containers.

As a pressure vessel for accommodating a high-pressure fluid such as hydrogen gas, a pressure vessel including a container main body portion, a base portion, and a reinforcing band is known (Patent Document 1). This pressure vessel includes a container main body formed by arranging a plurality of substantially cylindrical body portions having openings at one end and the other end in order to secure the degree of freedom in designing the vehicle. Further, in order to suppress an increase in the number of parts, one base member having a communication flow path that communicates the internal space of each body portion is attached to one end of the plurality of body portions, and the other of the plurality of body portions. One base member without a communication flow path is attached to the end. The reinforcing band is provided on the outer peripheral side of the container main body so as to be wrapped around both mouthpiece members. A valve is provided in the base member provided with the communication flow path, whereby hydrogen gas in the communication flow path can be supplied to the outside.

Japanese Unexamined Patent Publication No. 2019-158132

However, the pressure vessel described in Patent Document 1 requires a base having a size suitable for the width in the body portion arrangement direction of the container main body in order to connect a plurality of body portions of the container main body, and each of them. A sealing member is required for each of the protrusions of each mouthpiece attached to the opening of the body portion. Therefore, the mass of the pressure vessel increases and the cost also increases. Furthermore, since the protrusion of the base is attached to each of the plurality of independent body portions constituting the container body, the risk of fluid leakage increases as the number of attachment points increases, and the reliability of the pressure vessel with respect to the high-pressure fluid increases. Is low.

In view of such a background, it is an object of the present invention to provide a high-pressure container capable of suppressing an increase in mass and cost and improving reliability for a high-pressure fluid.

In order to solve such a problem, an embodiment of the present invention is a high-pressure container (1), which is arranged in a predetermined arrangement direction (horizontal direction) and parallel to each other in a predetermined longitudinal direction (front-back direction). A plurality of accommodating portions (6) defining a plurality of cylindrical accommodating spaces (5) extending in the area, and a communication passage (7) connecting the accommodating portions adjacent to each other and communicating the corresponding accommodating spaces. A flat resin liner (2) having a defining connecting portion (8), a reinforcing cover body (3) covering both sides and sides of the liner, a base (4) attached to the liner, and the liner. A support member (20) arranged between the outer surface of the connecting portion and the facing inner surface of the reinforcing cover body and supporting the connecting portion from the outside is provided.

According to this configuration, since the accommodation spaces adjacent to each other are communicated by the communication passage, it is not necessary to open the longitudinal end portion of the accommodation portion and communicate with the mouthpiece. Therefore, it is not necessary to match the size of the base with the size in the arrangement direction of the liners, and the base can be made lighter and less costly. Further, since it is not necessary to attach the base to all the accommodating portions, the number of attachment points is reduced, and the reliability of the high-pressure container for the high-pressure fluid is improved.

Since the accommodation spaces adjacent to each other are communicated with each other by the communication passage, there is a possibility that the connecting portion of the liner is deformed so that the communication passage expands when the high-pressure fluid is accommodated in the accommodation portion. According to this configuration, the connecting portion is supported from the outside by the supporting member, so that the deformation of the connecting portion is restricted.

Preferably, the support member (20) includes at least a pair of beam members (21, 31, 53) extending along the longitudinal direction.

According to this configuration, since the connecting portion can be supported by a small number of supporting members, it is possible to reduce the manufacturing cost and labor of manufacturing the high-pressure container.

Preferably, the beam member (21, 31, 53) has a tapered shape having a thicker wall thickness as it is closer to the center in the longitudinal direction.

If the connecting part is regarded as a fixed beam at both ends, the outward bending moment is the largest at the center in the longitudinal direction. According to this configuration, it is possible to effectively regulate the deformation of the connecting portion to the outside while suppressing the increase in the mass of the beam member.

Preferably, the beam member (21, 31, 53) has a flat outer surface along the longitudinal direction and an inner surface curved so as to bulge toward the communication passage in the central portion of the longitudinal direction. good.

According to this configuration, the portion of the reinforcing cover body facing the connecting portion has a linear plate shape in the longitudinal direction, and the shape of the reinforcing cover body becomes simple.

Preferably, the beam member (31) has a complementary shape to the gap between the accommodating portions located on both sides in the arrangement direction, and the outer surface of the beam member is aligned with the outer ends of the accommodating portions (6) on both sides. It is good to do.

According to this configuration, the reinforcing cover body has a flat and simple shape, and the reinforcing cover body can be easily manufactured. Further, the thickness of the beam member (beam formation) can be increased within a range in which the reinforcing cover body does not protrude in the direction in which both sides of the liner face, and the moment of inertia of area (that is, flexural rigidity) of the beam member can be increased. ..

Preferably, the connecting portion (8) has a joint portion (41) joined to each other in a part in the longitudinal direction, and the support member (20) is arranged so as to sandwich the joint portion at least one pair. (42) is included, and through holes (43) continuous in the plate thickness direction of the liner are formed in the joint portion and the support pieces, and each of them is formed by a fastening member (44) inserted through the through holes. A pair of said support pieces may be fastened to each other.

According to this configuration, the joint portion is supported by the fastening member via the support piece, and it is possible to reliably prevent the connecting portion of the liner from being deformed so as to expand the communication passage.

Preferably, the connecting portion (8) has a plurality of the joining portions (41) arranged at intervals (D1 to D3) in the longitudinal direction, and the supporting member is provided in each of the joining portions. It is preferable that the support pieces include a plurality of pairs of the support pieces, and the distance between them is shorter toward the center of the liner in the longitudinal direction (D1 <D2 <D3).

If the connecting part is regarded as a fixed beam at both ends, the outward bending moment is the largest at the center in the longitudinal direction. According to this configuration, it is possible to effectively regulate the deformation of the connecting portion to the outside while suppressing the number of supporting pieces.

Preferably, the connecting portion (8) defines a penetrating portion (51) penetrating the liner (2) in a portion of the longitudinal direction, and the support member (20) is coupled to each other in the penetrating portion at least one. A pair of beam members (53) may be included.

According to this configuration, the connecting portion can be supported by a small number of supporting members. Therefore, it is possible to reduce the manufacturing cost and labor of manufacturing the high-pressure container.

Preferably, the liner (2) has four or more of the accommodating portions (6) and three or more of the connecting portions (8), each of the connecting portions having the penetrating portion (in the center of the longitudinal direction). A plurality of pairs of beam members (51) that define the support member (20) and are coupled to each other with a joint portion (52) having a length (L) corresponding to the longitudinal dimension of the corresponding penetration portion. 53) may be included, and the length of the joint may be longer (L1> L2) toward the center of the liner in the arrangement direction.

If the connecting part is regarded as a fixed beam at both ends, the outward bending moment is the largest at the center in the longitudinal direction. According to this configuration, it is possible to effectively regulate the deformation of the connecting portion to the outside while suppressing the increase in the mass of the support member including the beam member.

As described above, according to the present invention, it is possible to provide a high-pressure container capable of suppressing an increase in mass and cost and improving reliability for a high-pressure fluid.

Perspective view of the high pressure container according to the first embodiment Cross-sectional view of the high-pressure vessel along line II-II in FIG. Longitudinal cross-sectional view of a half of the high-pressure container along (A) IIIA-IIIA line, (B) IIIB-IIIB line, and (C) IIIC-IIIC line in FIG. Explanatory drawing of manufacturing procedure of high pressure container which concerns on 1st Embodiment Perspective view of the high pressure container according to the second embodiment Cross-sectional view of the high-pressure container along the VI-VI line in FIG. Longitudinal cross-sectional view of a half of the high-pressure container along (A) VIIA-VIIA line, (B) VIIB-VIIB line, and (C) VIIC-VIIC line in FIG. Explanatory drawing of manufacturing procedure of high pressure container which concerns on 2nd Embodiment Perspective view of the high pressure container according to the third embodiment Cross-sectional view of the high-pressure container along the XX line in FIG. Longitudinal cross-sectional view of a half of the high-pressure container along the (A) XIA-XIA line and (B) XIB-XIB line in FIG. Enlarged view of the main part in FIG. Explanatory drawing of manufacturing procedure of high pressure container which concerns on 3rd Embodiment Perspective view of the high pressure container according to the fourth embodiment Cross-sectional view of the high-pressure container along the XV-XV line in FIG. Longitudinal cross-sectional view of a half of the high-pressure container along (A) XVIA-XVIA line, (B) XVIB-XVIB line, and (C) XVIC-XVIC line in FIG. Explanatory drawing of manufacturing procedure of high pressure container which concerns on 4th Embodiment

Hereinafter, some embodiments of the present invention will be described in detail with reference to the drawings.

<< First Embodiment >>
First, the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. As shown in FIGS. 1 and 2, the high-pressure container 1 is a container for accommodating a high-pressure fluid such as hydrogen gas or liquefied hydrogen. The high-pressure container 1 has an air mat-like plate shape in which a plurality of cylindrical portions extending in the longitudinal direction are arranged in an array direction, and is mounted under the floor of a fuel cell vehicle, for example. The high-pressure container 1 is configured to supply hydrogen gas to the FC stack (fuel cell stack) when generating electric energy to be supplied to the traveling motor. Hereinafter, the longitudinal direction of the cylindrical portion of the high-pressure container 1 is referred to as a front-rear direction, the arrangement direction of the cylindrical portions is referred to as a left-right direction, and the direction in which both sides of the high-pressure container 1 face is referred to as a vertical direction.

As shown in FIG. 2, the high-pressure container 1 includes a flat resin liner 2 and a reinforcing cover body 3 that covers both sides and side surfaces of the liner 2. The liner 2 is a tank body that holds a predetermined shape by itself and houses a high-pressure fluid inside. In the present embodiment, the liner 2 may be manufactured by any method such as blow molding or injection molding. When the liner 2 is manufactured by blow molding, any method such as extrusion blow molding, injection blow molding, stretch blow molding and the like may be used.

The reinforcing cover body 3 is a reinforcing member that reinforces the liner 2 in order to increase the rigidity of the liner 2 when a high-pressure fluid is accommodated in the liner 2. In the present embodiment, the reinforcing cover body 3 is a resin product made of CFRP (Carbon Fiber Reinforced Plastics), and covers the entire liner 2. The reinforcing cover body 3 can be obtained by any method such as PCM (Pre-preg Compression Molding), SMC (Sheet Molding Compound), HP-RTM (High Pressure Resin Transfer Molding), FW (Filament Winding), SW (Seat Winding), or the like. May be manufactured in.

As shown in FIG. 1, front and rear caps 4 are attached to both ends of the reinforcing cover body 3 in the front-rear direction. At least one of the caps 4 forms an injection / discharge passage inside the high-pressure container 1 for injecting / discharging a high-pressure fluid. The base 4 has a size corresponding to the cylindrical portion of the high-pressure container 1. In another embodiment, the base 4 may be attached to one of the front and rear directions of the reinforcing cover body 3.

As also shown in FIG. 2, the liner 2 has five accommodating portions 6 that define five cylindrical accommodating spaces 5 that are arranged in the left-right direction and extend parallel to each other in the front-rear direction. Further, the liner 2 has four connecting portions 8 that connect the accommodating portions 6 adjacent to each other and each define a communication passage 7 that communicates with the corresponding accommodating space 5.

The liner 2 has an annular shape in a cross section, and is composed of an upper plate portion 11 that defines the upper portion of the accommodation space 5 and a lower plate portion 12 that defines the lower portion of the accommodation space 5. The upper plate portion 11 has a corrugated plate shape in which the upper portions of the five accommodating portions 6 and the upper portions of the four connecting portions 8 are alternately continuous. The lower plate portion 12 has a corrugated plate shape in which the lower portions of the five accommodating portions 6 and the lower portions of the four connecting portions 8 are alternately continuous.

A cylindrical accommodating portion 6 is formed by facing each other at a position where the upper portion of the accommodating portion 6 formed by the upper plate portion 11 and the lower portion of the accommodating portion 6 formed on the lower plate portion 12 are aligned in the left-right direction. Will be done. Both ends of the accommodating portion 6 in the longitudinal direction have a hemispherical shape, and the other portions have a constant cross-sectional shape.

Two sheets defining the communication passage 7 by facing each other at a position where the upper portion of the connecting portion 8 formed by the upper plate portion 11 and the lower portion of the connecting portion 8 formed by the lower plate portion 12 are aligned in the left-right direction. The connecting portion 8 of the plate structure is formed. The connecting portion 8 has the same length in the front-rear direction as the accommodating portion 6. In other embodiments, the connecting portion 8 may have the same anteroposterior length as the portion of the accommodating portion 6 having a constant cross-sectional shape.

Like the liner 2, the reinforcing cover body 3 also has an annular shape in the cross section. The reinforcing cover body 3 is formed into a bag-shaped integral body by superimposing the upper plate-shaped body 13 and the lower plate-shaped body 14 and connecting them to each other at the flange portion 15 on the peripheral edge. The upper plate-like body 13 and the lower plate-like body 14 of the reinforcing cover body 3 have a corrugated plate shape in the portion other than the flange portion 15 in the same manner as the upper plate portion 11 and the lower plate portion 12 of the liner 2.

As shown in FIGS. 1 and 3A, neck portions 17 to be inserted into the base 4 are formed at both ends in the longitudinal direction of the tubular portion located at the center in the left-right direction of the liner 2. The base 4 is held by the reinforcing cover body 3 from the outside in a state of being fitted onto the neck portion 17 of the liner 2. The base 4 is airtightly attached to the neck 17 of the liner 2. That is, the base 4 is attached to both the liner 2 and the reinforcing cover body 3. In another embodiment, the base 4 may be arranged inside the liner 2 and attached to the liner 2.

As shown in FIGS. 2 and 3B and 3C, the expansion of the communication passage 7 is prevented between the outer surface of the four connecting portions 8 of the liner 2 and the facing inner surface of the reinforcing cover body 3. Four support members 20 that support the connecting portion 8 from the outside are arranged. Each support member 20 extends along the front-rear direction and is composed of a pair of beam members 21 that sandwich the corresponding connecting portion 8. The beam member 21 functions as a double-ended support beam in which both ends in the front-rear direction are supported by the reinforcing cover body 3. The beam member 21 may be made of a resin made of CFRP or the like, or may be made of a metal made of an aluminum alloy or the like. The beam member 21 of this embodiment is made of CFRP. Each pair of beam members 21 are arranged vertically symmetrically and have the same shape and dimensions in the vertical direction.

The two pairs of beam members 21 (FIG. 3B) arranged inside the liner 2 in the left-right direction have the same shape and are arranged symmetrically with the center of the liner 2 in the left-right direction as the center line. .. The two pairs of beam members 21 (FIG. 3 (C)) arranged on the outer side of the liner 2 in the left-right direction have the same shape as each other, which is shorter and thinner than the inner beam member 21, and the liner 2 has the same shape in the left-right direction. It is arranged symmetrically with the center of the center as the center line.

Each beam member 21 has a tapered shape with a thicker wall thickness closer to the center in the longitudinal direction, and has a flat outer surface along the longitudinal direction and a bulge toward the communication passage 7 at the central portion in the longitudinal direction. It has a curved inner surface. That is, the height of the communication passage 7 defined by the connecting portion 8 of the liner 2 is the lowest in the center in the width direction (front-back direction) and higher toward the end portion in the width direction. On the other hand, the plate-shaped portion of the reinforcing cover body 3 facing the connecting portion 8 with the pair of beam members 21 interposed therebetween extends linearly in the front-rear direction. This simplifies the shape of the reinforcing cover body 3.

The width of each beam member 21 is shorter than the width of the communication passage 7 (dimension in the front-rear direction), and the height at the end of the communication passage 7 where the beam member 21 does not exist is the same for the four communication passages 7. The thickness of the inner beam member 21 (FIG. 3 (B)) is thicker than the thickness of the outer beam member 21 (FIG. 3 (C)) at the position corresponding to the front-rear direction.

Next, a method for manufacturing the high-pressure container 1 thus configured will be described with reference to FIG.

First, as shown in FIG. 4A, a plurality of accommodating portions 6 arranged in the left-right direction and extending in parallel with each other in the front-rear direction and accommodating portions 6 adjacent to each other are connected to define a continuous passage 7. A flat resin liner 2 having a connecting portion 8 is prepared. Further, a base 4 to be attached to the liner 2 and the reinforcing cover body 3 and four pairs of beam members 21 to be arranged outside the connecting portion 8 of the liner 2 are prepared.

In the present embodiment, the upper plate-shaped body 13 and the lower plate-shaped body 14 are superposed and bonded to each other at the flange portion 15 to form the reinforcing cover body 3, so that the flange portion is formed when the high-pressure fluid is accommodated. 15 may open up and down. Therefore, a tape-shaped connecting member 22 (skin liner) is prepared in order to firmly bond the upper plate-shaped body 13 and the lower plate-shaped body 14 constituting the reinforcing cover body 3. However, the connecting member 22 is not essential and is not shown in FIG. The connecting member 22 may be provided on the entire circumference of the liner 2 except for the neck portion 17. In FIG. 4, the connecting member 22 extending in the front-rear direction and the connecting member 22 extending in the left-right direction of the liner 2 are shown separately, but both connecting members 22 may be continuous. The connecting member 22 may be, for example, a CFRP product made of the same resin as the reinforcing cover body 3.

Even if the flange portion 15 is not formed on the upper plate-shaped body 13 and the lower plate-shaped body 14, and the upper plate-shaped body 13 and the lower plate-shaped body 14 are overlapped in the vertical direction, they are connected to each other. good. In this case, the tape-shaped connecting member 22 is unnecessary because there is no possibility that the connecting portion will open up and down.

Next, as shown in FIG. 4B, a base 4 is attached to the neck portion 17 of the liner 2, and each pair of beam members 21 are placed on the outer surface of the connecting portion 8 of the liner 2 so as to sandwich the corresponding connecting portion 8 from above and below. Place along. Further, the connecting member 22 is arranged along the peripheral edge of the liner 2.

Finally, as shown in FIG. 4C, the reinforcing cover body 3 is provided so as to cover both sides and side surfaces of the liner 2 and to wrap the base end portion of the base 4. As a result, the high-pressure container 1 having the above configuration is completed. The reinforcing cover body 3 is formed by arranging an uncured resin (CFRP) so as to cover the liner 2 to give the resin a shape suitable for the outer surface of the liner 2, and then curing the resin in this state.

In the high-pressure container 1 manufactured in this way, as shown in FIG. 2, since the accommodating spaces 5 adjacent to each other are communicated with each other by the communication passage 7, the longitudinal end portion of the accommodating portion 6 is opened and the base 4 is used. There is no need to communicate. Therefore, it is not necessary to match the size of the base 4 with the size of the liner 2 in the left-right direction, and the base 4 can be reduced in weight and cost. Further, since it is not necessary to attach the base 4 to all the accommodating portions 6, the number of attachment points is reduced, and the reliability of the high-pressure container 1 with respect to the high-pressure fluid is improved. Further, since the liner 2 is flat because the plurality of accommodating portions 6 are arranged in a predetermined direction, the space of the high-pressure container 1 can be saved.

Since the accommodation spaces 5 adjacent to each other are communicated with each other by the communication passage 7, there is a possibility that the connecting portion 8 of the liner 2 is deformed so that the communication passage 7 expands when the high-pressure fluid is accommodated in the accommodation portion 6. be. However, as shown in FIGS. 3 and 4, the connecting portion 8 is supported from the outside by the supporting member 20, so that the deformation of the connecting portion 8 is restricted.

Since the support member 20 includes the beam member 21 extending along the front-rear direction as described above, the connecting portion 8 can be supported by a small number of support members 20. This reduces the manufacturing cost and labor of the high-pressure container 1.

When the connecting portion 8 is regarded as a fixed beam at both ends, the bending moment to the outside becomes the largest at the center in the longitudinal direction. In the present embodiment, since the beam member 21 has a tapered shape with a thicker wall thickness as it is closer to the center in the longitudinal direction, it is effective to deform the connecting portion 8 to the outside while suppressing an increase in the mass of the beam member 21. Can be regulated to.

<< Second Embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIGS. 5 to 8. Elements having the same or similar functions as those of the first embodiment are designated by the same reference numerals, and redundant description will be omitted. The same shall apply in the following embodiments.

In the high-pressure container 1 of the present embodiment, the configurations of the reinforcing cover body 3 and the support member 20 are different from those of the first embodiment. In addition, an intermediate reinforcing member 32 has been added. The liner 2 has substantially the same shape as that of the first embodiment. Hereinafter, a specific description will be given.

As shown in FIGS. 5 and 6, the upper plate-like body 13 and the lower plate-like body 14 of the reinforcing cover body 3 cooperate to form a flat outer shell structure forming a hollow portion, and these plates are formed. The bottom of the shape is not a corrugated plate but a flat plate. The reinforcing cover body 3 is formed so as to be wound around the liner 2, and the upper plate-shaped body 13 and the lower plate-shaped body 14 are integrated at the time of formation.

As shown in FIGS. 6 and 7, the support member 20 includes four pairs of beam members 31 arranged between the outer surface of the connecting portion 8 of the liner 2 and the facing inner surface of the reinforcing cover body 3. Each beam member 31 has a complementary shape to the gap between the accommodating portions 6 located on both sides in the left-right direction. That is, the beam member 31 has the same length in the front-rear direction as the portion having a constant cross-sectional shape of the accommodating portion 6, and has a shape that does not create a gap between the accommodating portions 6 on both sides. The outer surface of the beam member 31 is aligned with the outer ends of the accommodating portions 6 on both sides, whereby the reinforcing cover body 3 having a flat bottom shape covers the liner 2 and the beam member 31 without creating a gap. There is.

All four pairs of beam members 31 are formed to have the same length. On the other hand, the two pairs of beam members 31 (FIG. 7 (B)) arranged inside the liner 2 in the left-right direction are the two pairs of beam members 31 (FIG. 7 (C)) arranged outside the liner 2 in the left-right direction. )), It is thicker (higher beam formation) in the center in the front-back direction.

An intermediate reinforcing member 32 is arranged inside the reinforcing cover body 3 and outside the liner 2 and the beam member 31. The intermediate reinforcing member 32 may be, for example, a fiber reinforcing material or CFRP. The intermediate reinforcing member 32 has a tubular shape having a constant oval cross-sectional shape, and has the same front-rear direction length as the beam member 31 (the same front-rear direction length as the portion of the accommodating portion 6 having a constant cross-sectional shape). ..

Next, a method for manufacturing the high-pressure container 1 will be described with reference to FIG. First, as shown in FIG. 8A, a flat resin liner 2 having a plurality of accommodating portions 6 and connecting portions 8, a base 4 to be attached to the liner 2, and four pairs of beam members 31 are formed. prepare.

Next, as shown in FIG. 8B, a base 4 is attached to the neck portion 17 of the liner 2, and each pair of beam members 31 are placed on the outer surface of the connecting portion 8 of the liner 2 so as to sandwich the corresponding connecting portion 8 from above and below. Place along. Next, as shown in FIG. 8C, the intermediate reinforcing member 32 is arranged so as to be wound around the outer side of the liner 2 and the beam member 31. Finally, as shown in FIG. 8D, the reinforcing cover body 3 is provided so as to cover both sides and side surfaces of the liner 2 and to wrap the base end portion of the base 4. As a result, the high-pressure container 1 having the above configuration is completed.

When the reinforcing cover body 3 is provided by seat winding (SW), since it is not possible to cover both ends of the liner, another reinforcing member (not shown) may be set in advance before seat winding.

In this way, the beam member 31 has a complementary shape to the gap between the accommodating portions 6 located on both sides in the left-right direction, and the outer surface of the beam member 31 is aligned with the outer ends of the accommodating portions 6 on both sides, whereby the reinforcing cover body is formed. 3 becomes a flat and simple shape, and the reinforcing cover body 3 can be easily manufactured. Further, it is possible to increase the thickness (beam formation) of the beam member 31 within a range in which the reinforcing cover body 3 does not protrude in the vertical direction. As a result, the moment of inertia of area (that is, flexural rigidity) of the beam member 31 increases. In other words, the bending stress of the beam member 31 required to obtain the required bending rigidity can be reduced, and the allowable bending stress degree of the material used for the beam member 31 can be reduced.

<< Third Embodiment >>
Next, a third embodiment of the present invention will be described with reference to FIGS. 9 to 13. In the high-pressure container 1 of the present embodiment, the configurations of the support member 20 and the liner 2 are mainly different from those of the above-described embodiment.

As shown in FIGS. 9 and 10, the reinforcing cover body 3 has the same shape as that of the first embodiment. On the other hand, the liner 2 forms a joint portion 41 in which the upper portion of the connecting portion 8 formed by the upper plate portion 11 and the lower portion of the connecting portion 8 formed by the lower plate portion 12 are joined to each other in a part in the front-rear direction. It differs from the above embodiment in that it is used.

Specifically, as shown in FIG. 11, the upper part and the lower part of the connecting portion 8 are outward (upper for the upper part, lower for the lower part) and inner (lower for the upper part) at positions that are aligned with each other in the front-rear direction. , The lower part has a corrugated plate shape that protrudes upward). The connecting portion 8 defines a communication passage 7 at a portion where the upper portion and the lower portion protrude outward, and forms an airtightly integrated joint portion 41 at a portion where the upper portion and the lower portion protrude inward. In the illustrated example, the connecting portion 8 has seven joining portions 41 arranged at intervals D1 to D3 in the front-rear direction, and eight connecting passages 7 are defined before and after the joining portion 41.

As shown in FIGS. 10 and 11, the support member 20 includes seven pairs of support pieces 42 arranged in each of the joints 41 so as to sandwich the joint 41. Each support piece 42 has a complementary shape to the recess formed on the outer surface of the inwardly projecting portion of the corresponding connecting portion 8. That is, the support piece 42 has a thickness that matches the protruding dimension of the outwardly protruding portion of the corresponding connecting portion 8. Therefore, the portion of the reinforcing cover body 3 facing the connecting portion 8 has a linear plate shape in the front-rear direction.

As shown in FIG. 12, the joint portion 41, the support piece 42, and the reinforcing cover body 3 are formed with through holes 43 continuous in the plate thickness direction of the liner 2. The upper and lower portions of the reinforcing cover body 3 facing the connecting portion 8 are fastened to each other by the fastening member 44 inserted through the through hole 43. That is, the upper and lower support pieces 42 are fastened to each other via the reinforcing cover body 3 by the fastening member 44 inserted through the through hole 43. In another embodiment, the upper and lower support pieces 42 may be directly fastened by the fastening member 44, and the reinforcing cover body 3 may be provided so as to cover the fastening member 44. The fastening member 44 is a combination of bolts and nuts in this embodiment. In other embodiments, the fastening member 44 may be a rivet or a clip.

As shown in FIG. 11, the distance from the support member 20 arranged in the center in the front-rear direction to the support member 20 adjacent in the front-rear direction is set as the interval D1, and the support member 20 further adjacent to these support members 20 in the front-rear direction. Let the distance to be the interval D2. At this time, these distances are D1 ≦ D2 ≦ D3. That is, the distance D between the fastening member 44 and the joint portion 41 in the front-rear direction is set shorter toward the center side of the liner 2 in the front-rear direction.

Next, a method for manufacturing the high-pressure container 1 will be described with reference to FIG. First, as shown in FIG. 13A, a flat resin liner 2 having five accommodating portions 6 and four connecting portions 8, a base 4 to be attached to the liner 2, and each connecting portion 8 are provided. A total of 28 pairs of support pieces 42, 7 pairs for each of the support members 20 to be formed, are prepared. In the present embodiment, the reinforcing cover body 3 superimposes the upper plate-shaped body 13 and the lower plate-shaped body 14 and connects them to each other at the flange portion 15, so that a tape-shaped connecting member 22 (skin liner) is prepared.

Next, as shown in FIG. 13B, the base 4 is attached to the neck portion 17 of the liner 2, and the support pieces 42 of each pair are sandwiched between the corresponding connecting portions 8 of the liner 2 so as to sandwich the corresponding connecting portions 8 from above and below. Place in the recess. Further, the connecting member 22 is arranged on the peripheral edge portion of the liner 2 except for the neck portion 17. Next, as shown in FIG. 13C, the reinforcing cover body 3 is provided so as to cover both sides and side surfaces of the liner 2 and the support piece 42 and to wrap the base end portion of the base 4. Finally, as shown in FIG. 13D, the fastening member 44 is inserted into the through hole 43 corresponding to each pair of support pieces 42, and each pair of support pieces 42 is fastened by the fastening member 44. As a result, the high-pressure container 1 having the above configuration is completed.

As described above, in the present embodiment, at least one pair of support pieces 42 in which the connecting portion 8 has a joint portion 41 joined to each other in a part in the front-rear direction and the support member 20 is arranged so as to sandwich the joint portion 41. including. A through hole 43 continuous in the plate thickness direction of the liner 2 is formed in the joint portion 41 and the support piece 42, and each pair of support pieces 42 are fastened to each other by a fastening member 44 inserted through the through hole 43. .. Therefore, the fastening member 44 supports the joint portion 41 via the support piece 42, and it is possible to reliably prevent the connecting portion 8 of the liner 2 from being deformed so as to expand the communication passage 7.

Further, as shown in FIG. 11, the connecting portion 8 has a plurality of joint portions 41 arranged at intervals D1 to D3 in the front-rear direction, and the support member 20 is provided in each of the joint portions 41. Includes support piece 42. Since the distance D between the joint portion 41 and the support piece 42 is shorter toward the center of the liner 2 in the front-rear direction, the number of the support pieces 42 is suppressed and the joint portion 8 is deformed to the outside, which can be regarded as a fixed beam at both ends. Can be effectively regulated.

<< Fourth Embodiment >>
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 14 to 17. In the high-pressure container 1 of the present embodiment, the configurations of the support member 20 and the liner 2 are mainly different from those of the above-described embodiment.

As shown in FIGS. 14 and 15, the reinforcing cover body 3 has the same shape as that of the first embodiment. On the other hand, as shown in FIGS. 15 and 16, in the liner 2, the accommodating portions 6 adjacent to each other in the left-right direction are separated from each other in the central portion in the front-rear direction, and the respective accommodating portions 6 are the upper plate portion 11 and the lower plate portion. 12 is different from the above embodiment in that it has an independent circular cross-sectional shape.

Specifically, the connecting portion 8 of the liner 2 defines a penetrating portion 51 that penetrates the liner 2 in the vertical direction at the center in the front-rear direction. As shown in FIG. 16, the connecting portion 8 of the liner 2 does not exist in the penetrating portion 51, and the connecting portion 8 has two communication passages 7 separated from each other at both ends of the liner 2 in the front-rear direction. It is defined. The penetrating portion 51 is defined between them by two connecting portions 8 separated from each other in the front-rear direction. The dimensions of the penetrating portion 51 in the front-rear direction are such that in the connecting portion 8 (FIG. 16B) arranged inside the liner 2 in the left-right direction, the connecting portion 8 arranged outside the liner 2 in the left-right direction (FIG. 16). It is longer than (C)).

A support member 20 is arranged in each of the four connecting portions 8. Each support member 20 includes an upper beam member 53 and a lower beam member 53 that are connected to each other with a connecting portion 52 having a length L corresponding to the dimension of the penetrating portion 51 in the front-rear direction. Therefore, in the support member 20 (FIG. 16 (B)) arranged inside the liner 2 in the left-right direction, the upper and lower beam members 53 are connected as compared with the support member 20 (FIG. 16 (C)) arranged outside. The length L of the portion 52 is long (L1> L2, FIG. 16 shows the length from the center line). Each beam member 53 functions as a pair of cantilever beams extending in both the front-rear direction from the central portion in the front-rear direction.

The upper and lower beam members 53 have the same shape as the beam member 21 of the first embodiment except for the joint portion 52. That is, each support member 20 has a tapered shape with a thicker wall thickness toward the center in the longitudinal direction, and bulges toward the communication passage 7 at the flat outer surface along the longitudinal direction and the central portion in the longitudinal direction. It has an inner surface that is curved (or inclined) so as to be curved (or inclined). Further, the pair of support members 20 (FIG. 16 (C)) arranged on the outer side of the liner 2 in the left-right direction are shorter and shorter than the pair of support members 20 (FIG. 16 (B)) arranged on the inner side. It has a thin shape (see also FIG. 17 (A)). Each beam member 53 also functions as two continuous one-end fixed / one-ended support beams.

Next, a method for manufacturing the high-pressure container 1 will be described with reference to FIG. First, as shown in FIG. 17 (A), a flat resin liner 2 having a plurality of accommodating portions 6 and connecting portions 8, a base 4 to be attached to the liner 2, and the outside of the connecting portion 8 of the liner 2. Prepare four support members 20 to be arranged in. FIG. 17A shows the support member 20 in a completed shape. At this point, the support member 20 is prepared as two beam members 53 separated vertically, and is formed into a completed shape in a subsequent step. NS. Also in this embodiment, since the reinforcing cover body 3 is formed by superimposing the upper plate-shaped body 13 and the lower plate-shaped body 14 and connecting them to each other at the flange portion 15, the tape-shaped connecting member 22 (skin). Liner) should be prepared.

Next, as shown in FIG. 17B, a base 4 is attached to the neck portion 17 of the liner 2, and each pair of beam members 53 is attached to the outer surface of the connecting portion 8 of the liner 2 so as to sandwich the corresponding connecting portion 8 from above and below. They are arranged along the line and are connected to each other at the penetration portion 51. Further, the connecting member 22 is arranged on the peripheral edge portion of the liner 2 except for the neck portion 17. Next, as shown in FIG. 17C, the reinforcing cover body 3 is provided so as to cover both sides and side surfaces of the liner 2 and the support member 20, and to wrap the base end portion of the base 4. As a result, the high-pressure container 1 having the above configuration is completed.

As described above, in the present embodiment, the connecting portion 8 defines the penetrating portion 51 penetrating the liner 2 in a part in the front-rear direction, and the support member 20 includes at least one pair of beam members 53 connected to each other at the penetrating portion 51. .. Therefore, it is possible to support the connecting portion 8 with a small number of supporting members 20. This reduces the manufacturing cost and labor of the high-pressure container 1.

Further, in the present embodiment, the liner 2 has four or more accommodating portions 6 and three or more connecting portions 8, and each of the connecting portions 8 defines a penetrating portion 51 in the center in the front-rear direction. Then, as shown in FIG. 16, the support member 20 includes a plurality of pairs of beam members 53 that are coupled to each other with a joint portion 52 having a length L corresponding to the dimension in the front-rear direction of the corresponding penetration portion 51, and the joint portion. The length L in the front-rear direction of 52 is longer in the left-right direction toward the center side of the liner 2. As a result, while suppressing the increase in mass of the support member 20 including the beam member 53, the deformation of the connecting portion 8 which can be regarded as a fixed beam at both ends to the outside is effectively regulated.

Although the description of the specific embodiment is completed above, the present invention can be widely modified without being limited to the above embodiment. For example, the reinforcing cover body 3 is formed by superimposing the upper plate-shaped body 13 and the lower plate-shaped body 14, but may be formed by winding a fiber material impregnated with resin around the liner 2. In the fourth embodiment, each connecting portion 8 of the liner 2 defines one penetrating portion 51 in the center in the front-rear direction, but each connecting portion 8 defines a plurality of penetrating portions 51 at positions separated in the front-rear direction. You may. Further, in the above embodiment, the high pressure container 1 has been described as a hydrogen tank mounted on the fuel cell vehicle, but the high pressure container 1 may be arranged on the ground or may accommodate other fluids. Further, the posture of the high pressure container 1 is not limited to the above. In addition, the specific configuration and arrangement of each member and portion, quantity, material, procedure, and the like can be appropriately changed as long as they do not deviate from the gist of the present invention. On the other hand, not all of the components shown in the above embodiments are indispensable, and they can be appropriately selected.

1 High-pressure container 2 Liner 3 Reinforcing cover body 4 Base 5 Storage space 6 Storage part 7 Continuous passage 8 Connection part 11 Upper plate part (Liner 2)
12 Lower plate (liner 2)
13 Upper plate-shaped body (reinforcing cover body 3)
14 Lower plate-like body (reinforcing cover body 3)
15 Flange part 17 Neck part 20 Support member 21 Beam member 31 Beam member 41 Joint part 42 Support piece 43 Through hole 44 Fastening member 51 Penetration part 52 Joint part 53 Beam member

Claims (9)

It ’s a high-pressure container,
A plurality of accommodating portions that define a plurality of cylindrical accommodating spaces that are arranged in a predetermined arrangement direction and extend in parallel to each other in a predetermined longitudinal direction, and the accommodating portions that are adjacent to each other are connected to each other, and the corresponding accommodating space is provided. A flat resin liner with a connecting part that defines a communication passage that communicates with the liner.
A reinforcing cover body that covers both sides and sides of the liner, and
The base attached to the liner and
A high-pressure container provided with a support member arranged between the outer surface of the connecting portion of the liner and the facing inner surface of the reinforcing cover body and supporting the connecting portion from the outside. The high-pressure container according to claim 1, wherein the support member includes at least a pair of beam members extending along the longitudinal direction. The high-pressure container according to claim 2, wherein the beam member has a tapered shape having a thicker wall thickness as it is closer to the center in the longitudinal direction. 3. The third aspect of claim 3, wherein the beam member has a flat outer surface along the longitudinal direction and an inner surface curved so as to bulge toward the communication passage at a central portion in the longitudinal direction. High pressure container. 4. The fourth aspect of the present invention, wherein the beam member has a complementary shape to a gap between the accommodating portions located on both sides in the arrangement direction, and the outer surface of the beam member is aligned with the outer ends of the accommodating portions on both sides. High pressure container described in. The connecting portion has a joint portion joined to each other in a part in the longitudinal direction, and the connecting portion has a joint portion.
The support member comprises at least a pair of support pieces arranged so as to sandwich the joint.
A through hole continuous in the plate thickness direction of the liner is formed in the joint portion and the support piece, and each pair of the support pieces is fastened to each other by a fastening member inserted through the through hole. The high-pressure container according to claim 1. The joint has a plurality of the joints spaced apart from each other in the longitudinal direction.
The support member comprises a plurality of pairs of the support pieces provided in each of the joints.
The high-pressure container according to claim 6, wherein the interval is shorter toward the center side of the liner in the longitudinal direction. The connecting portion defines a penetrating portion that penetrates the liner in a part of the longitudinal direction.
The high-pressure vessel according to claim 1, wherein the support member includes at least a pair of beam members bonded to each other at the penetration portion. The liner has four or more of the accommodating portions and three or more of the connecting portions.
Each of the connecting portions defines the penetrating portion in the center of the longitudinal direction.
The support members include a plurality of pairs of the beam members that are coupled to each other with a joint having a length corresponding to the longitudinal dimension of the corresponding penetration, the longitudinal length of the penetration being the arrangement. The high-pressure container according to claim 8, wherein the liner is longer toward the center side in the direction.

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