JP2019184423A - Storage container and integrated body - Google Patents

Abstract

To provide a storage container which is advantageous in improving durability to external force.SOLUTION: A storage container 10 includes: a tubular body 12 including an inside surface 12b which faces a cask C; a lid body 14 movably attached to an opening at a vertical-direction upper part of the tubular body 12; and a restriction part 54 which is provided at the tubular body 12, and which restricts a movement range of the lid body 14.SELECTED DRAWING: Figure 6

Description

  The present disclosure relates to a storage container that stores a cask and an integrated body in which the storage containers are integrated.

  Conventionally, there is a cask for storing spent nuclear fuel assemblies. Patent Document 1 discloses a storage container that can store such a cask.

JP 2016-2111856 A

  In the storage container shown in Patent Document 1, the cask is placed on a base at the bottom of the storage container. At this time, for example, when a high level of seismic force is applied to the storage container, the inertial force of the earthquake is transmitted from the base to the cask, and as a result, a large inertial force may be loaded on the entire storage container. Since inertial force resulting from such sudden external force may damage the storage container, countermeasures are desired.

  Therefore, an object of the present disclosure is to provide a storage container and an assembly that are advantageous in improving durability against external force.

  A storage container according to an aspect of the present disclosure is a storage container that stores a cask and is movably attached to a cylindrical body having an inner surface facing the cask and an opening in an upper part in the vertical direction of the cylindrical body. And a restraining portion that is provided on the tubular body and restrains the movement range of the lid.

  Further, in the above storage container, the restraining portion may be engaged with the lid. The restraining portion includes a reference body that is attached to one of the cylindrical body or the lid and protrudes toward the other side of the cylindrical body or the lid, and the other of the cylindrical body or the lid is the reference body It is good also as a thing which has a hole part which accommodates in the range which surrounded the part which protruded by the inner surface. The other of the cylindrical body or the lid may include a metal tube installed in the hole, and the inner surface of the hole contacting the reference body may be the inner surface of the metal tube. A cylindrical body is good also as what supports a cover body via a rotary body. The material of the cylindrical body may be concrete, and the cylindrical body may support the lid through a metal plate. The size of the outer shape of the lid on the horizontal plane is smaller than the size of the outer shape of the cylindrical body on the horizontal plane, and the movement range of the lid may be within the range of the outer shape of the cylindrical body on the horizontal plane. . The outer shape of the cylindrical body on the horizontal plane and the outer shape of the lid body on the horizontal plane are hexagonal, and the rotating body is 120 ° with respect to the center of the hexagon on three diagonal lines passing through the center of the hexagon. There may be one each at intervals. The outer shape of the cylindrical body on the horizontal plane and the outer shape of the lid body on the horizontal plane are hexagonal, and the restraining portion is a rotating body on the three diagonal lines passing through the center of the hexagon and with the hexagonal center as a reference. May be one each at 120 ° intervals that are 60 ° apart. In addition, the storage container may include a connecting portion having one end connected to the inner surface of the cylindrical body and the other end connected to the lower surface of the lid.

  In addition, an integrated body according to one aspect of the present disclosure includes a first storage container that stores a first cask, a second storage container that stores a second cask, and a third storage container that stores a third cask. The first storage container, the second storage container, and the third storage container are the above-mentioned storage containers, respectively, the cylindrical body provided in the first storage container, the cylindrical body provided in the second storage container, and the first Each of the cylindrical bodies included in the three storage containers has a hexagonal columnar shape, faces the other two cylindrical bodies, and is arranged in a honeycomb shape.

  According to the present disclosure, it is possible to provide a storage container and an assembly that are advantageous in improving durability against external force.

It is a perspective view which shows the structure of the storage container which concerns on one Embodiment. It is sectional drawing of a storage container corresponded in the II-II cross section of FIG. FIG. 3 is a cross-sectional view of the storage container, corresponding to the III-III cross section of FIG. It is sectional drawing of the 2nd laminated part of a base equivalent to the IV-IV cross section of FIG. It is a top view which shows the structure of the upper part of the storage container which concerns on one Embodiment. FIG. 6 is a partial cross-sectional view of the storage container corresponding to the VI-VI cross section of FIG. 5. It is a top view which shows an example of the state which the cover body corresponding to FIG. 5 moved. FIG. 7 is a partial cross-sectional view showing another example of a connecting portion corresponding to FIG. 6. It is a perspective view which shows the structure of the integrated body which concerns on one Embodiment.

  Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Here, the dimensions, materials, and other specific numerical values shown in the embodiments are merely examples, and the present disclosure is not limited unless otherwise specified. Further, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted. Elements that are not directly related to the present disclosure are not illustrated. Further, in the following drawings, the Z axis is taken in the vertical direction, and the X axis and the Y axis are taken in the direction perpendicular to the X axis in a plane perpendicular to the Z axis.

(Storage container)
FIG. 1 is a perspective view illustrating a configuration of a storage container 10 according to an embodiment. FIG. 2 is a vertical sectional view of the storage container 10. FIG. 3 is a horizontal sectional view of the storage container 10 and is a view seen in a vertical direction toward the upper surface 27 side of the base 16. The storage container 10 stores the cask C.

  The cask C is, for example, a metal dry cask that houses a spent nuclear fuel assembly. Here, the spent nuclear fuel assembly refers to an assembly in which a plurality of spent nuclear fuel rods that have been reacted in the nuclear reactor are connected. In each figure, the outer shape of the cask C housing the spent nuclear fuel assembly is schematically shown as a cylinder having a full length LC and an outer diameter DC.

  The storage container 10 according to the present embodiment as a whole has a substantially hexagonal columnar outer shape with the vertical axis AX as a central axis. The storage container 10 stores the cask C vertically in a storage space S1 formed inside. In addition, in each figure, the external shape of the storage container 10 is shown with the full length L1 and the substantially hexagonal column of the dihedral width W1 and the diagonal distance W2 which are the dimensions of the hexagon on a horizontal surface.

  The storage container 10 storing the cask C is installed, for example, on an outdoor ground. Since the storage container 10 has a substantially hexagonal columnar shape, a plurality of storage containers 10 can be arranged close to each other on the outer surfaces or fastened together and placed in a so-called honeycomb structure when installed on the ground.

  The storage container 10 includes a cylindrical body 12, a lid body 14, a base 16, and a mounting plate 30. Here, there is a concern that a small amount of radiation such as a neutron beam leaks from the spent nuclear fuel assembly in the cask C. However, short-term exposure to trace amounts of radiation does not pose a problem. However, in the vicinity of the cask C, since it may be exposed for a long period of time, the material of the container that stores the cask C may be concrete. Therefore, in the present embodiment, the main material constituting the cylindrical body 12, the lid body 14, and the base 16 is concrete. Since the storage container 10 is made of concrete as a whole, it is also expressed as a concrete overpack (COP).

  The cylindrical body 12 has a hexagonal column shape in which the inner space is the storage space S1. The cylindrical body 12 has an outer side surface 12a composed of six side surfaces of a hexagonal column and a cylindrical inner side surface 12b. In each figure, the shape of the storage space S1 is indicated by a cylinder having a full length L2 and an inner diameter D2. The total length L2 of the cylindrical body 12 corresponds to the total length of the storage space S1. Assuming that the cask C is disposed in the storage space S1 coaxially with the cylindrical body 12, a gap space having a gap G is formed between the outer wall surface of the cask C and the inner side surface 12b of the cylindrical body 12. Occurs.

  Moreover, the cylindrical body 12 has the groove part 12c extended along a vertical direction in the center part of a horizontal direction on each of the six side surfaces which comprise the outer side surface 12a. When the plurality of storage containers 10 are stacked and arranged in a honeycomb structure as described above, the groove 12c can serve as an air flow path by facing the storage containers 10 adjacent to each other. That is, when the storage container 10 is stacked and arranged in the honeycomb structure, the groove 12c faces the groove 12c provided on the side surface of another storage container 10 that faces the storage container 10.

  The lid 14 is a flat plate that covers the opening in the upper part of the cylindrical body 12 in the vertical direction. The planar shape of the lid body 14 is a hexagon matched to the outer surface 12 a of the cylindrical body 12. The size of the planar shape of the lid body 14 and the support structure of the lid body 14 in the upper part of the cylindrical body 12 will be described in detail below.

  Moreover, the cover body 14 has a plurality of discharge ports 14a for discharging the air flowing through the storage space S1 to the outside of the storage container 10 as a first opening. The discharge port 14a of the present embodiment is a cutout portion that is cut out in the vertical direction at the center portion in the horizontal direction on each of the six side surfaces of the lid body 14. As a further first opening, the upper end of the cylindrical body 12 may have a notch 12 d continuous with the discharge port 14 a of the lid 14. In addition, the discharge port 14a is not comprised by such a notch part, but may be comprised by the through-hole penetrated along the perpendicular direction in the outer peripheral part vicinity of the cover body 14. FIG. Alternatively, instead of providing the discharge port 14 a in the lid body 14, only a discharge port such as a notch formed in the upper end portion of the cylindrical body 12 may exist.

  Moreover, when the discharge port 14a and the notch 12d are provided at the positions exemplified above, the plurality of grooves 12c formed on the outer surface 12a of the cylindrical body 12 are respectively the discharge port 14a and the notch. It may be continuous with 12d. Thereby, an air circulation path is easily formed between the outside of the storage container 10 and the storage space S1.

  The base 16 is a member that is disposed below the cylindrical body 12 and supports the cylindrical body 12. The overall shape of the base 16 is a substantially hexagonal column that matches the outer shape of the cylindrical body 12. The cylindrical body 12 is attached to the upper surface 27 of the base 16 with a bolt or the like (not shown).

  The base 16 has a second opening that communicates with the storage space S1 and the outside. Based on the shape of the second opening, the base 16 includes, for example, two stacked layers of a first stacked portion 16a having a vertical length L4 and a second stacked portion 16b having a vertical length L5. It can be considered that the part is a member laminated in the vertical direction. In this case, the total length L3 of the base 16 is the sum of the length L4 and the length L5. The upper surface of the first stacked unit 16 a corresponds to the upper surface 27 of the base 16. The lower surface of the first stacked unit 16a is integrated with the upper surface of the second stacked unit 16b. The lower surface of the second stacked portion 16 b corresponds to the bottom surface of the base 16, that is, the bottom surface of the storage container 10.

  The 1st lamination | stacking part 16a has two types of through-holes, the 1st through-hole 20a penetrated to the perpendicular direction, and the six 2nd through-holes 21a-26a. The first through hole 20a is formed coaxially with the vertical axis AX and has an opening diameter D3, as indicated by a broken-line circle in FIG. The opening diameter D3 is smaller than the outer diameter DC of the cask C. The second through holes 21a to 26a are respectively formed at the same distance from the vertical axis AX and at equal intervals with the vertical axis AX as a reference, and have an opening diameter D4. In the present embodiment, the second through holes 21 a to 26 a are formed at intervals of 60 ° in accordance with the direction from the vertical axis AX toward the respective outer surfaces of the base 16. The number and position of the second through holes 21a to 26a are not limited to the above examples, and may be changed as appropriate.

  FIG. 4 is a horizontal cross-sectional view of the second stacked portion 16b. The second stacked portion 16b includes two first opening grooves 21b to 26b that are cut in the vertical direction and that respectively form the first communication space S2, and the second opening groove 20b that forms the second communication space S3. Has a kind of opening groove. The first opening grooves 21b to 26b are each formed in a direction from the vertical axis AX toward each outer surface of the base 16 and have a distance W3. The interval W3 is, for example, the same as the opening diameter D4 of the second through holes 21a to 26a formed in the first stacked portion 16a. That is, the first opening grooves 21b to 26b communicate with the second through holes 21a to 26a, respectively. The second opening groove 20b is formed coaxially with the vertical axis AX. That is, the second opening groove 20b communicates with the first through hole 20a. The second opening groove 20b communicates with each of the first opening grooves 21b to 26b in the horizontal direction. That is, the second stacked portion 16b is formed with a second communication space S3 formed on the center side and a first communication space S2 extending from the second communication space S3 to the outer surface in the radial direction.

  According to such a shape of the base 16, referring to FIG. 2, the air flowing in from the openings facing the outside of the six first opening grooves 21 b to 26 b passes through the first communication space S <b> 2, One air is guided to the second through holes 21a to 26a and flows into the storage space S1. The other air that has passed through the first communication space S2 further passes through the second communication space S3, is guided to the first through hole 20a, and flows into the storage space S1. That is, the second opening refers to a series of openings including the first through hole 20a, the second through holes 21a to 26a, the first opening grooves 21b to 26b, and the second opening groove 20b.

  The mounting plate 30 is installed on the upper surface 27 of the base 16 facing the storage space S <b> 1 via the legs 34. A cask C is placed on the upper surface 30 a of the placement plate 30. The mounting plate 30 is a metal disk-shaped member. The outer diameter D5 of the mounting plate 30 is larger than the outer diameter DC of the cask C and smaller than the inner diameter D2 of the cylindrical body 12. The mounting plate 30 is installed substantially coaxially with the base 16. In addition, the cask C is mounted substantially coaxially with respect to the mounting plate 30. The thickness T of the mounting plate 30 has a dimension that can withstand the load of the cask C.

  The leg portions 34 are members that are arranged on the outer peripheral portion of the lower surface 30b of the mounting plate 30 at regular intervals with respect to the vertical axis AX, for example. That is, there are a plurality of legs 34. In the present embodiment, there are six leg portions 34. In the present embodiment, when the mounting plate 30 is installed on the upper surface 27 of the base 16, the leg portion 34 positions the second through holes 21 a to 26 a formed in the base 16, respectively. Avoid contact with the top surface 27. Further, due to the presence of the leg portions 34, when the mounting plate 30 is installed on the upper surface 27 of the base 16, the upper surface 30 a of the mounting plate 30 has a height H from the upper surface 27 of the base 16. It becomes the position. By setting the height H to be larger than the thickness T of the mounting plate 30, a gap is generated between the lower surface 30 b of the mounting plate 30 and the upper surface 27 of the base 16. Further, the width W4 in the longitudinal direction of the leg 34 is determined on condition that, for example, it can withstand the load of the cask C or does not block the openings of the second through holes 21a to 26a.

  Here, referring to FIG. 2, the air that has passed through the first communication space S <b> 2 from the outside and is guided to the second through holes 21 a to 26 a flows into the storage space S <b> 1. The air in the storage space S1 passes through the gap space in the storage space S1 from the lower side to the upper side along the outer wall surface of the cask C, and finally the discharge port 14a formed in the lid body 14 or the cylinder It is discharged to the outside from the notch 12d formed in the shaped body 12. Therefore, the heat released from the cask C is radiated to the outside of the storage space S1 along such a flow of air in the storage space S1.

  On the other hand, the air guided from the outside through the second communication space S3 to the first through hole 20a passes through the gap between the lower surface 30b of the mounting plate 30 and the upper surface 27 of the base 16 and is stored. It merges with the flow of air passing through the gap space in the space S1 from below to above. Therefore, the heat released from the vicinity of the bottom surface of the cask C is also radiated to the outside of the storage space S1 along the air flow in the storage space S1.

  Next, the support structure of the lid body 14 at the upper part of the cylindrical body 12 will be described. FIG. 5 is a plan view showing the configuration of the upper part of the storage container 10. FIG. 6 is a partial cross-sectional view of the outer shape of the storage container 10 cut along a hexagonal diagonal distance.

  The storage container 10 is supported by, for example, a cylindrical body 12 as a support structure of the lid body 14, and the rotating body is brought into contact with the surface side of the lid body 14 so that the lid body 14 is attached to the cylindrical body 12. A rotating body 42 that is movable is provided. The rotating body 42 is included in a rotating mechanism 40 such as a ball roller, and is rotatably supported by a main body 44 included in the rotating mechanism 40. In a state where the lid body 14 is supported by the cylindrical body 12, at least a part of the upper end surface 12 e at the upper part in the vertical direction of the cylindrical body 12 and a region near the outer peripheral end of the lower surface 14 b of the lid body 14 face each other. . Therefore, when the lid body 14 is supported by the cylindrical body 12, the main body 44 is configured such that the cylindrical body 12 and the lid body 14 are not in contact with each other, and the rotating body 42 is on the lower surface 14 b of the lid body 14. It fixes to the upper end surface 12e side of the cylindrical body 12 so that it may contact. At this time, for example, the gap between the upper end surface 12e of the cylindrical body 12 and the lower surface 14b of the lid body 14 is desirably small in order to prevent foreign matters from entering the storage space S1 from the outside. Therefore, the main body 44 is embedded on the upper end surface 12 e side so that a part of the rotating body 42 protrudes from the upper end surface 12 e of the cylindrical body 12.

  Moreover, the three rotary bodies 42 are installed in the storage container 10 of this embodiment. The outer shape of the cylindrical body 12 of the present embodiment on the horizontal plane and the outer shape of the lid body 14 on the horizontal plane are hexagons. That is, as shown in FIG. 5, the three rotating bodies 42 are installed one by one at intervals of 120 ° with respect to the vertical axis AX on three diagonal lines passing through the vertical axis AX that is the center of the hexagon. is there.

  Further, the storage container 10 may include metal plates 46 at three locations on the lower surface 14b of the lid body 14 with which the rotating surfaces of the three rotating bodies 42 come into contact, respectively. In this case, the rotating surface of the rotating body 42 is in contact with the surface of the metal plate 46. That is, the rotating body 42 supports the lower surface 14 b of the lid body 14 via the metal plate 46. The plane of one metal plate 46 includes at least a region in which the rotating surface of the corresponding rotating body 42 continues to contact the metal plate 46 even when the lid 14 moves in any direction on the horizontal plane. Similarly to the above, the metal plate 46 is embedded on the lower surface 14b side of the lid body 14 in order to reduce the gap between the upper end surface 12e of the cylindrical body 12 and the lower surface 14b of the lid body 14.

  In the above description, the rotating body 42 is supported by the cylindrical body 12, and the rotating surface is brought into contact with the lower surface 14b side of the lid body 14, but on the contrary, the rotating body 42 is supported by the lid body 14, It is good also as what makes a rotating surface contact the upper end surface 12e side of the cylindrical body 12. FIG. However, when the rotating surface of the rotating body 42 is brought into contact with the upper end surface 12e side, the corresponding metal plate 46 is embedded on the upper end surface 12e side.

  The storage container 10 includes a restraining portion 54 that is provided on the cylindrical body 12 and restrains the movement range of the lid body 14. The restraining portion 54 of the present embodiment includes a reference body 50 that defines a moving range of the lid body 14 with respect to the cylindrical body 12. For example, the reference body 50 is attached to the tubular body 12 and protrudes toward the lid body 14. In the present embodiment, the reference body 50 is a metal columnar rod body in which the vertical direction is the extending direction, one end is embedded downward from the upper end surface 12e, and the other end protrudes upward from the upper end surface 12e. Further, as a portion constituting the restraining portion 54, the lid body 14 has a hole portion 14 c that accommodates a portion protruding from the upper end surface 12 e of the reference body 50 within a range surrounded by the inner surface 14 d. The hole 14c is dug in a columnar shape along the vertical direction. The hole portion 14c does not penetrate the lid body 14. Further, the hole 14c has such a depth that the tip of the reference body 50 does not contact the hole 14c when the lid 14 is supported on the cylindrical body 12. According to such a configuration, the side surface of the portion protruding from the upper end surface 12e of the reference body 50 faces the inner surface 14d of the hole portion 14c in the horizontal direction. Therefore, when the lid body 14 moves in the horizontal direction, further movement is restricted when the reference body 50 comes into contact with the inner surface 14d.

  Here, as shown in FIG. 5, in a state where the center of the hexagon on the horizontal plane of the cylindrical body 12 and the center of the hexagon on the horizontal plane of the lid body 14 coincide with each other on the vertical axis AX, It is assumed that the axial center of the reference body 50 and the axial center of the hole 14c are approximately the same. Hereinafter, the position of the lid body 14 in this state is referred to as “standard position”. At this time, a range indicated by a distance L6 between the side surface of the reference body 50 and the inner surface 14d of the opposed hole portion 14c is a movement range of the lid body 14 from the standard position. That is, in one horizontal direction, for example, the X direction, the lid body 14 is movable within a range of a distance L6 from the standard position to the X direction plus side and a distance L6 from the standard position to the X direction minus side. Therefore, by setting the distance L6 to a desired dimension value in advance, the movement range of the lid body 14 is defined as a desired range in a range where the inner surface 14d of the hole 14c and the reference body 50 are in contact with each other. .

  Further, when a set of the reference body 50 and the corresponding hole portion 14c is installed, at least one set needs to be installed in the storage container 10. Here, as described above, the outer shape of the cylindrical body 12 on the horizontal plane and the outer shape of the lid body 14 on the horizontal plane are set as a set of the reference body 50 and the hole 14c in the storage container 10 of the present embodiment. The number is three. As shown in FIG. 5, the three groups are 120 ° shifted from the adjacent rotating bodies 42 by 60 ° on three diagonals passing through the vertical axis AX that is the center of the hexagon, with respect to the vertical axis AX. There is one at a time.

  In the storage container 10, the size of the outer shape of the lid body 14 on the horizontal plane is smaller than the size of the outer shape of the cylindrical body 12 on the horizontal plane. Referring to FIG. 5, the outer shape of the lid body 14 on the horizontal plane is a hexagon like the outer shape of the cylindrical body 12 on the horizontal plane. However, the two-surface width W <b> 5 of the lid body 14 is smaller than the two-surface width W <b> 1 of the cylindrical body 12. Further, the diagonal distance W6 of the lid body 14 is smaller than the diagonal distance W2 of the cylindrical body 12. Here, when the distance L6 in the set of the reference body 50 and the hole 14c is used, the two-surface width W5 of the lid body 14 is smaller than the two-surface width W1 of the cylindrical body 12 by two distances L6. Similarly, the diagonal distance W6 of the lid body 14 is smaller than the diagonal distance W2 of the cylindrical body 12 by two distances L7 (L7> L6). Further, in the state where the lid body 14 is in the standard position, when considering a hexagonal diagonal distance, as shown in FIG. 6, the distance between the apex of the cylindrical body 12 and the apex of the lid body 14 is It roughly matches the distance L6 in the set of the reference body 50 and the hole 14c.

  FIG. 7 is a plan view showing a state in which the lid body 14 is moved to the X direction plus side as an example when the shapes of the cylindrical body 12 and the lid body 14 are in the relationship as described above. In FIG. 7, the hexagonal central axis on the horizontal plane of the cylindrical body 12 is denoted as AX1, and the hexagonal central axis on the horizontal plane of the lid body 14 is denoted as AX2. The central axis AX1 related to the cylindrical body 12 is at the same position as the vertical axis AX in each drawing.

  In FIG. 7, the lid body 14 is moved from the standard position toward the plus side in the X direction by a distance L6 that is the maximum movable distance defined by the set of the reference body 50 and the hole 14c. Here, as described above, the diagonal distance W6 of the lid body 14 is set to be smaller than the diagonal distance W2 of the cylindrical body 12 by two distances L7. Here, the distance L7 is larger than the distance L6 in terms of the width across flats. Therefore, even if the lid body 14 moves the maximum distance to the X direction plus side, the movement of the lid body 14 is restricted at a point at a distance L6 from the standard position. That is, the lid body 14 of this embodiment moves within a hexagonal range on the horizontal plane of the cylindrical body 12 as shown in FIG.

  FIG. 7 shows an example of the X direction along the hexagonal diagonal distance, but the same applies to the Y direction along the hexagonal dihedral width, for example. As described above, the two-surface width W5 of the lid body 14 is set to be smaller by two distances L6 than the two-surface width W1 of the cylindrical body 12 in advance. Therefore, even if the lid 14 moves the maximum distance in the Y direction plus side or minus side, the movement is restricted at the point of the distance L6 from the standard position, and therefore it cannot move further outside. . Therefore, even if the lid body 14 moves from the standard position to any direction in the horizontal direction, a part of the lid body 14 projects outward beyond the hexagon on the horizontal plane of the cylindrical body 12. There is nothing. That is, the movement range of the lid body 14 is within the range of the outer shape of the cylindrical body 12 on the horizontal plane.

  Further, the lid body 14 may include a metal tube 52 in each hole 14c. The metal tube 52 is installed in such a manner that the outer peripheral surface is matched with the inner surface 14d of the hole 14c. Therefore, when the metal tube 52 is installed in the hole 14c, the inner surface 14d of the hole 14c that contacts the reference body 50 corresponds to the inner surface of the metal tube 52 as shown in FIG. According to such a configuration, when the reference body 50 and the hole portion 14 c come into contact with each other by the movement of the lid body 14, the side surface of the reference body 50 is actually in contact with the concrete portion that forms the lid body 14. The metal tube 52 is formed.

  In the above description, it is assumed that the reference body 50 is attached to the cylindrical body 12 and protrudes toward the lid body 14, and accordingly, the hole portion 14 c is formed in the reference body 50. . However, on the contrary, the reference body 50 is attached to the lid body 14 and protrudes toward the cylindrical body 12, and accordingly, the hole 14 c is formed in the upper end surface 12 e of the cylindrical body 12. It is good also as what is formed. However, when the hole 14c is formed on the cylindrical body 12 side, the corresponding metal tube 52 is installed on the cylindrical body 12 side.

  In addition, the storage container 10 includes a connecting portion 60 having one end connected to the inner side surface 12 b of the cylindrical body 12 and the other end connected to the lower surface 14 b of the lid body 14. In FIG. 5 and FIG. 6, as an example, the four connecting portions 60 are installed at intervals of 90 ° with respect to the vertical axis AX. One connecting portion 60 includes one wire rope 62, two shackles 64, and two eyebolts 66. One end of the wire rope 62 is connected to one eyebolt 66 fastened to the inner side surface 12 b of the cylindrical body 12 via one movable shackle 64. On the other hand, the other end of the wire rope 62 is connected to the remaining one eyebolt 66 fastened to the lower surface 14 b of the lid body 14 via the remaining one movable shackle 64. As long as the lid body 14 moves within the movement range, the wire rope 62 is attached with a slack beforehand so as not to receive a tensile force from both ends. On the other hand, when the lid body 14 moves beyond the movement range for some reason, the connecting portion 60 is more than that of the lid body 14 by receiving the tensile force from both ends immediately after that. Suppress movement. Here, when the wire rope 62 receives a tensile force from both ends, the lid body 14 is supported on the cylindrical body 12, that is, when it is not yet dropped from the cylindrical body 12. is there.

  In addition, as described above, since the four connecting portions 60 are installed in four directions on the horizontal plane, even if the lid body 14 moves in any direction, each can share and receive a tensile force. This is preferable in that the load on one connecting portion 60 is reduced. However, for example, when the weight of the lid 14 is relatively light due to the structure of the storage container 10 or when the assumed external force is even larger, the number or positions of the connecting portions 60 are appropriately changed. May be.

  Moreover, it may replace with the connection part 60 which uses the wire rope 62, and may employ | adopt the connection part 70 which uses the chain 72 as shown in FIG. One connecting portion 70 includes one chain 72, two shackles 74, and two brackets 76. One end of the chain 72 is connected to one bracket 76 fixed to the inner side surface 12 b of the cylindrical body 12 via one movable shackle 74. On the other hand, the other end of the chain 72 is connected to the remaining one bracket 76 fixed to the lower surface 14b of the lid body 14 via the remaining one movable shackle 74. Since the chain 72 has higher strength than the wire rope 62, for example, when the weight of the lid body 14 is relatively heavy, the reliability of suppressing the movement of the lid body 14 beyond a specified movement range is improved.

  Next, the operation and effect of this embodiment will be described.

  The storage container 10 for storing the cask C according to the present embodiment is movably attached to the cylindrical body 12 having the inner side surface 12b facing the cask C and the opening in the upper vertical direction of the cylindrical body 12. And a lid 14. The storage container 10 includes a restraining portion 54 that is provided on the cylindrical body 12 and restrains the movement range of the lid body 14.

  According to such a storage container 10, since the lid body 14 is supported so as to be movable with respect to the cylindrical body 12, when a sudden external force such as seismic force is applied to the storage container 10, the lid body 14 vibrates out of phase with the cylindrical body 12. Therefore, in the entire storage container 10, the lid body 14 acts as a dynamic vibration absorber, and the vibration of the cylindrical body 12 supported by the base 16 that receives the load of the cask C is suppressed. Therefore, an increase in inertial force related to the entire storage container 10 when such external force is applied can be suppressed, and as a result, durability against external force can be improved.

  Further, according to the storage container 10, even if the lid body 14 is moved due to sudden external force applied, the movement range of the lid body 14 is restrained by the restraining portion 54, so that the lid body 14 moves. It is possible to suppress the excessive action of the dynamic vibration absorber.

  Further, in the storage container 10 according to the present embodiment, the restraining portion 54 may be engaged with the lid body 14.

  According to such a storage container 10, the restraining portion 54 is engaged with the lid body 14 in addition to being provided on the cylindrical body 12, so that the specific position where the restraining portion 54 is installed is For example, the upper end surface 12e of the cylindrical body 12 and the lower surface 14b of the lid body 14 can be set to be opposed to each other. That is, since the restraint part 54 can be accommodated in a component that already exists, an increase in the size of the storage container 10 can be suppressed.

  In the storage container 10 according to the present embodiment, the restraining portion 54 is attached to one of the cylindrical body 12 and the lid body 14 and protrudes toward the other side of the cylindrical body 12 or the lid body 14. The reference body 50 may be provided. Further, the other of the cylindrical body 12 or the lid body 14 may have a hole portion 14c that accommodates the protruding portion of the reference body 50 in a range surrounded by the inner surface 14d.

  According to such a storage container 10, the range of movement of the lid body 14 when a sudden external force is applied is defined as the range until the reference body 50 and the inner surface 14d of the hole 14c come into contact with each other. Can do.

  Moreover, in the storage container 10 which concerns on this embodiment, the other of the cylindrical body 12 or the cover body 14 is good also as a thing provided with the metal tube 52 installed in the hole part 14c. In this case, the inner surface 14 d of the hole 14 c that contacts the reference body 50 is the inner surface of the metal tube 52.

  Here, if the lid 14 is made of, for example, concrete, the force received from the reference body 50 depending on the side impact load of the lid 14 only on the hole in which the hole 14c is formed in the lid 14 is applied to the inner surface 14d. There is also a risk of concentrating on the part and damaging the lid 14. On the other hand, according to the storage container 10, the metal tube 52 has a higher strength than concrete and can disperse the load received from the reference body 50 over the entire pipe. Can be protected and damage to the concrete portion of the lid 14 can be suppressed.

  In the storage container 10 according to this embodiment, the cylindrical body 12 may support the lid body 14 via the rotating body 42.

  According to such a storage container 10, since the frictional force between the rotating surface of the rotating body 42 and the surface with which the rotating surface of the rotating body 42 comes into contact can be reduced, the lid body 14 is formed into the cylindrical body 12. It becomes easy to vibrate horizontally. Therefore, when an external force is applied to the storage container 10, the lid body 14 can more easily exhibit the function as a dynamic vibration absorber.

  In the storage container 10 according to the present embodiment, the cylindrical body 12 may be made of concrete, and the cylindrical body 12 may support the lid body 14 via the metal plate 46.

  According to such a storage container 10, the rotating body 42 contacts the metal plate 46 and does not directly contact the concrete material forming the lid body 14. The occurrence of damage to the contact portion with the rotating body 42 can be suppressed.

  Further, in the storage container 10 according to the present embodiment, the size of the outer shape of the lid body 14 on the horizontal plane is smaller than the size of the outer shape of the cylindrical body 12 on the horizontal plane. Here, the movement range of the lid body 14 may be within the range of the outer shape of the cylindrical body 12 on the horizontal plane.

  Here, when the storage container 10 is installed on the ground, for example, as will be described in the following embodiments relating to the aggregate, the plurality of storage containers 10 are often arranged in a honeycomb structure. In such a stack, the lids 14 of adjacent storage containers 10 are close to each other. Therefore, when an external force is applied to the storage container 10, if the lid body 14 moves beyond the range of the outer shape of the cylindrical body 12 on the horizontal plane, the lid bodies 14 of adjacent storage containers 10 come into contact with each other. There is a fear. On the other hand, according to the storage container 10, since the movement range of the lid body 14 does not exceed the range of the outer shape of the cylindrical body 12 on the horizontal plane, even when an external force is applied to the storage container 10, the adjacent storage containers There is no possibility that the 10 lids 14 come into contact with each other. Therefore, damage during vibration of the lid 14 is suppressed.

  Moreover, in the storage container 10 which concerns on this embodiment, the external shape on the horizontal surface of the cylindrical body 12 and the external shape on the horizontal surface of the cover body 14 are hexagons. Here, the rotating bodies 42 may be provided on three diagonal lines passing through the hexagonal center one by one at intervals of 120 ° with respect to the hexagonal center.

  According to such a storage container 10, when the outer shape of the cylindrical body 12 on the horizontal plane and the outer shape of the lid body 14 on the horizontal plane are particularly hexagonal, the number of installed rotating bodies 42 is set to be cylindrical. The minimum number that can horizontally support the lid 14 on the body 12 can be used.

  Further, in the storage container 10 according to the present embodiment, the restraining portions 54 are arranged on three diagonal lines passing through the center of the hexagon at 120 ° intervals shifted by 60 ° from the rotating body 42 with respect to the center of the hexagon. There may be one each.

  According to such a storage container 10, the number of sets of the reference body 50 and the hole 14 c is three, and these sets are installed at equal intervals with respect to the three rotating bodies 42. Become. Therefore, even if the three sets receive the side impact load of the lid body 14 that has moved from any direction in the horizontal direction, the side impact load can be distributed to each of them, so that the strength can be more durable. It will be a thing.

  In addition, the storage container 10 according to the present embodiment may include connecting portions 60 and 70 having one end connected to the inner surface 12 b of the cylindrical body 12 and the other end connected to the lower surface 14 b of the lid body 14. .

  According to such a storage container 10, even when the reference body 50 is damaged due to a sudden large external force, it is possible to prevent the lid 14 from dropping from the cylindrical body 12.

(Aggregate)
Next, an integrated body according to an embodiment will be described. FIG. 9 is a perspective view showing the configuration of the integrated body 100 according to the present embodiment.

  The integrated body 100 is a storage container group in which a plurality of storage containers 10 according to the above-described embodiment are stacked on the ground. For example, the assembly 100 includes a first storage container 10a that stores a first cask, a second storage container 10b that stores a second cask, and a third storage container 10c that stores a third cask, which are adjacent to each other. Shall be included. The first storage container 10a, the second storage container 10b, and the third storage container 10c have a substantially hexagonal column shape as a whole. Therefore, in the integrated body 100, the cylindrical body 12 included in the first storage container 10a, the cylindrical body 12 included in the second storage container 10b, and the cylindrical body 12 included in the third storage container 10c are respectively It faces the two cylindrical bodies 12 and is arranged in a honeycomb shape.

  As described above, in the storage container 10, the lid body 14 has a plurality of outlets 14a, and the cylindrical body 12 has a groove 12c on the outer surface 12a. Therefore, even when the plurality of storage containers 10 are stacked and arranged close to each other as shown in FIG. 9, the groove portions 12c of the adjacent storage containers 10 face each other, and the air flow path FP is formed.

  According to such an integrated body 100, a plurality of storage containers 10 can be arranged close to each other on the outer surfaces and stacked in a honeycomb structure, so that a large number of storage containers 10 can be disposed in a smaller occupied space. it can.

  Further, according to the integrated body 100, the storage containers 10 advantageous for improving the durability against external force are integrated. Therefore, even if a plurality of storage containers 10 are integrated as the integrated body 100 as a whole, the durability against external force is improved. Can be advantageous.

  Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist.

  For example, in the storage container 10 according to the above-described embodiment, the cylindrical body 12 supports the lid body 14 via the rotating body 42. However, the storage container 10 according to the present disclosure may have a structure in which the cylindrical body 12 and the lid body 14 are displaced without using the rotating body 42. For example, the frictional force of the contact surface between the cylindrical body 12 and the lid body 14 may be reduced, for example, via a member having slidability with respect to the contacting member.

  In the storage container 10 according to the above embodiment, a plurality of reference bodies 50 are used, but a single reference body 50 may be used. It is also possible to provide an elastic material between the reference body 50 and the hole 14c, or to connect the cylindrical body 12 and the lid body 14 using an elastic body instead of the reference body 50. It is.

DESCRIPTION OF SYMBOLS 10 Storage container 12 Cylindrical body 12b Inner side surface 14 Lid body 14b Lower surface 14c Hole part 14d Inner surface 42 Rotating body 46 Metal plate 50 Reference body 52 Metal pipe 54 Restriction part 60,70 Connection part C Cask

Claims (11)

A storage container for storing a cask,
A cylindrical body having an inner surface facing the cask;
A lid attached movably to the opening in the upper part of the cylindrical body in the vertical direction;
A restraining portion that is provided on the cylindrical body and restrains a movement range of the lid;
A storage container.   The storage container according to claim 1, wherein the restraining portion is engaged with the lid. The restraint portion includes a reference body that is attached to one of the cylindrical body or the lid and projects toward the other side of the cylindrical body or the lid,
The other of the cylindrical body or the lid body has a hole portion that accommodates the protruding portion of the reference body in an area surrounded by an inner surface.
The storage container according to claim 2. The other of the cylindrical body or the lid includes a metal tube installed in the hole,
The inner surface of the hole that contacts the reference body is an inner surface of the metal tube;
The storage container according to claim 3.   The said cylindrical body is a storage container of any one of Claims 1-4 which supports the said cover body via a rotary body. The material of the cylindrical body is concrete,
The cylindrical body supports the lid body via a metal plate.
The storage container according to any one of claims 1 to 5. The size of the outer shape of the lid on the horizontal plane is smaller than the size of the outer shape of the cylindrical body on the horizontal plane,
The range of movement of the lid is within the range of the outer shape on the horizontal plane of the cylindrical body,
The storage container according to any one of claims 1 to 6. The outer shape of the cylindrical body on the horizontal plane and the outer shape of the lid body on the horizontal plane are hexagons,
The rotating bodies are arranged on three diagonals passing through the hexagonal center one by one at intervals of 120 ° with respect to the hexagonal center.
The storage container according to claim 5. The outer shape of the cylindrical body on the horizontal plane and the outer shape of the lid body on the horizontal plane are hexagons,
9. The restraint portion is provided on each of three diagonal lines passing through the hexagonal center at 120 ° intervals that are 60 ° apart from the rotating body with reference to the hexagonal center. The storage container described.   The storage container according to any one of claims 1 to 9, further comprising a connecting portion having one end connected to the inner side surface of the cylindrical body and the other end connected to a lower surface of the lid. A first storage container for storing the first cask;
A second storage container for storing the second cask;
A third storage container for storing the third cask,
The first storage container, the second storage container, and the third storage container are storage containers according to any one of claims 1 to 10, respectively.
The cylindrical body included in the first storage container, the cylindrical body included in the second storage container, and the cylindrical body included in the third storage container are each a hexagonal column, and the other two An assembly that faces one of the cylindrical bodies and is arranged in a honeycomb shape.

Images