JP2019184422A - Storage container and integrated body - Google Patents

Abstract

To provide a storage container and an integrated body which are advantageous in weight reduction.SOLUTION: A storage container 10 includes: a hexagonal-prismatic tubular body 12 for storing a cask C inside; and a base 16 arranged under the tubular body 12, so as to support the tubular body 12. The base 16 includes: six block bodies 161 to 166 separated from each other in a peripheral direction; and a connection member for connecting the six block bodies 161 to 166. The connection member includes, for example, six connection bodies 18a to 18f for connecting each block body opposed in the peripheral direction among the six block bodies 161 to 166 in the peripheral direction.SELECTED DRAWING: Figure 4

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

  The storage container shown in Patent Document 1 includes a base that supports a cylindrical body that stores a cask therein. Here, when the cask is a spent nuclear fuel assembly, the storage container is enlarged. The storage container is made of a concrete material in consideration of the properties of the spent nuclear fuel assembly. Therefore, if the base is a single body, the weight of the base increases, and it may be difficult to lift the base depending on the capacity of the crane when assembling the storage container.

  Therefore, an object of the present disclosure is to provide a storage container and an integrated body that are advantageous for weight reduction.

  A storage container according to an aspect of the present disclosure is a storage container that stores a cask, and is arranged in a hexagonal columnar cylindrical body that stores the cask therein, and is disposed below the cylindrical body to support the cylindrical body. A base, and the base includes six block bodies spaced in the circumferential direction and a connecting member that connects the six block bodies.

  In the storage container, each of the six block bodies may be disposed below the inner corner portion of the hexagonal cylindrical body. Each of the six block bodies may include an upper surface partially facing the space inside the cylindrical body and a bottom surface on the opposite side of the upper surface. Among the six block bodies, the interval between the block bodies facing each other in the circumferential direction may be constant, or may extend from the outer surface side to the inner surface side of the block bodies. The connecting member may include six connecting bodies that connect, in the circumferential direction, block bodies that face each other in the circumferential direction among the six block bodies. The length of the six connected bodies in the vertical direction may be shorter than the length of the six block bodies in the vertical direction. The six connected bodies may be included in the projection area of the cylindrical body as viewed in the vertical direction. The connecting member may include six arm portions extending radially, and each of the six arm portions may be attached to the upper surface of each of the six block bodies. The arm portion and the block body may be attached via a plate body. The arm part may be connected to another arm part. The connecting member may include an auxiliary connecting member that connects two arms adjacent in the circumferential direction. The arm portion may extend from the connection position of the auxiliary connecting member to the outer peripheral side. The storage container may include a plate-like member that is supported on the base side and on which the cask is placed.

  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 The cylindrical bodies included in the three storage containers respectively face the other two cylindrical bodies and are arranged in a honeycomb shape.

  According to the present disclosure, it is possible to provide a storage container and an integrated body that are advantageous for weight reduction.

It is a perspective view showing composition of a storage container concerning a 1st embodiment of this indication. It is sectional drawing of a storage container corresponded in the II-II cross section of FIG. It is an exploded view showing the composition of the storage container concerning a 1st embodiment of this indication. It is a perspective view which shows the structure of a base. It is a top view which shows the structure of a base. It is sectional drawing which shows the structure of the storage container which concerns on 2nd Embodiment of this indication. It is a perspective view showing the composition of the storage container concerning a 3rd embodiment of this indication. It is a perspective view which shows the structure of the base in 3rd Embodiment. It is a perspective view showing composition of an accumulation object concerning one embodiment of this indication.

  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.

(First embodiment)
First, the storage container 10 according to the first embodiment will be described. FIG. 1 is a perspective view showing a configuration of a storage container 10 according to the present embodiment. FIG. 2 is a vertical sectional view of the storage container 10. 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, and a base 16. 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 lid body 14 is attached to the upper part of the cylindrical body 12 with a bolt or the like (not shown).

  The lid body 14 has a plurality of outlets 14 a for discharging the air flowing through the storage space S <b> 1 to the outside of the storage container 10. 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. Furthermore, the upper end of the cylindrical body 12 may have a cutout portion 12 d continuous with the discharge port 14 a of the lid body 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 cylindrical body 12 is attached to the upper surface of the base 16, that is, the upper surfaces 161 a to 166 a of each block body to be described later, using bolts (not shown). The configuration of the base 16 will be described in detail below.

  FIG. 3 is an exploded view of the storage container 10. The cask C stored in the storage container 10 is large. The material of the storage container 10 is concrete. Therefore, when the cylindrical body 12, the lid body 14, or the base 16 is formed as a single piece, the weight of each piece increases. As a result, for example, when assembling the storage container 10, it may not be possible to lift each member such as the cylindrical body 12 depending on the capacity of the crane at the site. Therefore, as shown in FIG. 3, the cylindrical body 12, the lid body 14, and the base 16 may each be configured by a combination of a plurality of members.

  For example, the cylindrical body 12 may be composed of a plurality of layers stacked in the vertical direction. In the present embodiment, the cylindrical body 12 is composed of four layers: a first layer 121, a second layer 122, a third layer 123, and a fourth layer 124. Furthermore, each layer such as the first layer 121 may be a combination of a plurality of members divided along the vertical direction. In the present embodiment, the first layer 121 is divided into two equal parts, the first member 121a and the second member 121b. Similarly, the second layer 122 is equally divided into a third member 122a and a fourth member 122b. The third layer 123 is equally divided into a fifth member 123a and a sixth member 123b. The fourth layer 124 is divided into two equal parts, a seventh member 124a and an eighth member 124b. That is, the cylindrical body 12 includes a total of eight members from the first member 121a to the eighth member 124b. Each layer such as the first layer 121 and each member such as the first member 121a and the second member 121b are connected by a bolt or the like.

  In this case, as shown in FIG. 3, the connecting positions of the two members in each layer such as the first layer 121 are shifted by 60 ° for each layer with respect to the vertical axis AX of the approximately hexagonal column. You may combine. Thereby, the storage container 10 can make intensity | strength uniform, without being influenced by a connection position. In addition, the arrangement is not limited to 60 ° for each layer, and the connecting positions of adjacent members in the vertical direction may be arranged so as not to overlap in the circumferential direction.

  The lid 14 may be a combination of a plurality of members divided along the vertical direction. In the present embodiment, the lid body 14 is divided into two equal parts, a first flat plate 141 and a second flat plate 142. The flat plates of the first flat plate 141 and the second flat plate 142 are connected by bolts or the like.

  Further, the base 16 may have the following configuration.

  FIG. 4 is a perspective view showing the configuration of the base 16. FIG. 5 is a plan view showing the configuration of the base 16. 4 and 5, only the base 16 is shown, and the cylindrical body 12 and the like supported on the base 16 are not shown. Further, in FIG. 5, the area where the cask C is placed and the position of the inner side surface 12 b of the cylindrical body 12 are each indicated by a two-dot chain line circle. That is, in the present embodiment, both the cylindrical body 12 and the cask C are placed on the base 16.

  The base 16 includes six block bodies that are spaced apart in the circumferential direction and a connecting member that connects the six block bodies. The six block bodies are a first block body 161, a second block body 162, a third block body 163, a fourth block body 164, a fifth block body 165, and a sixth block body 166. Hereinafter, what is simply referred to as “block body” indicates these six block bodies. On the other hand, the connection member in this embodiment is provided with six connection bodies which connect the block bodies which are mutually opposed in the circumferential direction among the six block bodies, respectively. The six connectors are a first connector 18a, a second connector 18b, a third connector 18c, a fourth connector 18d, a fifth connector 18e, and a sixth connector 18f. Hereinafter, what is simply referred to as “connected body” indicates these six connected bodies.

  First, six block bodies will be described. Each block body is radially arranged around one vertical axis. Here, one vertical axis can be identified with the vertical axis AX that serves as a reference for the hexagonal shape of the cylindrical body 12. However, the vertical axis here does not exactly coincide with the vertical axis AX, and may be slightly shifted from each other.

  The shape of each block body of the present embodiment is determined so as to satisfy the following conditions. However, the object of the present disclosure can be achieved without satisfying all the conditions.

  As a first condition, the shape of each block body is substantially the same. According to the first condition, when the base 16 is manufactured, it is only necessary to prepare one type of block body.

  As a second condition, a part of each block body is in the projection area of the cask C stored in the storage space S1 when viewed in the vertical direction. Referring to FIG. 5, the region where the cask C is placed corresponds to the projection region here. According to the second condition, since at least a part of each block body is positioned below the cask C stored in the storage space S1, the base 16 uses the weight of the cask C for each block. Can be received while being dispersed in the body.

  As the third condition, each block body includes upper surfaces 161a to 166a partially facing the storage space S1 in which the cask C is stored, and bottom surfaces 161b to 166b on the opposite side of the upper surfaces 161a to 166a. Note that only the bottom surfaces 162b to 164b of the bottom surfaces 161b to 166b are clearly shown in FIG. In the upper surfaces 161 a to 166 a, the part facing the storage space S <b> 1 refers to a region inside the position of the inner surface 12 b of the cylindrical body 12. Since the upper surfaces 161a to 166a support the cylindrical body 12 by surface contact and receive the weight of the cask C, the upper surfaces 161a to 166a are preferably horizontal surfaces. Moreover, since the storage container 10 is installed on, for example, an outdoor ground, the bottom surfaces 161b to 166b are also horizontal surfaces.

  As a fourth condition, each block body does not have an opening that can be an air flow path or a groove that can be a human passage in some cases. According to the fourth condition, each block body has a simple shape because it does not have an opening or a groove, and is advantageous in ease of manufacture.

  As a fifth condition, the block bodies do not contact each other. According to the fifth condition, instead of each block body having no opening or the like in the fourth condition, in the base 16, the first distribution space S <b> 2 formed between the respective block bodies and the second distribution The space S3 is an air flow path or a human passage. Here, the first distribution space S2 is a space formed between the block bodies facing each other in the circumferential direction. The second distribution space S <b> 3 is a space formed in the center portion of the base 16 with the block bodies facing each other with the vertical axis AX as a reference.

  As a sixth condition, the outer surface of each block body matches a part of the hexagonal shape of the cylindrical body 12. For example, the first block body 161 includes a first outer side surface 161c and a second outer side surface 161d. The hexagonal dimensions of the base 16 are a two-sided width W1 and a diagonal distance W2 in accordance with the hexagonal shape of the cylindrical body 12. That is, the corner portion of the hexagonal cylindrical body 12 is placed on the block body at a position in the circumferential direction between two side surfaces facing the adjacent block body.

  As a seventh condition, each block body is disposed below the inner corner portion of the hexagonal cylindrical body 12. For example, with respect to the first block body 161, an inner angle portion of 120 ° formed by the first outer surface 161 c and the second outer surface 161 d is included in the first block body 161. As for the second block body 162, the second block body 162 includes an inner angle portion of 120 ° formed by the first outer surface 162c and the second outer surface 162d. That is, the first outer surface 161c of the first block body 161 and the second outer surface 162d of the second block body 162 are aligned on the same plane where one of the outer surfaces 12a of the cylindrical body 12 is present.

  Here, when satisfy | filling said each condition, the block bodies which oppose in the circumferential direction are spaced apart and arrange | positioned by the space | interval W3, in order to form 1st distribution space S2. For example, the first block body 161 includes two side surfaces extending radially about the vertical axis AX, that is, a first side surface 161e and a second side surface 161f. Similarly, the second block body 162 includes a first side surface 162e and a second side surface 162f. That is, for example, between the first block body 161 and the second block body 162, the first side surface 161e of the first block body 161 and the second side surface 162f of the second block body 162 are separated by a distance W3. , Facing in parallel.

  In addition, all the six first distribution spaces S2 of the present embodiment are on any straight line toward the vertical axis AX. In the present embodiment, the first distribution space S <b> 2 formed between the first block body 161 and the second block body 162, and the first formed between the fourth block body 164 and the fifth block body 165. The distribution space S2 faces the vertical axis AX as a reference. That is, the first circulation spaces S2 that face each other with the vertical axis AX as a reference are aligned on the same straight line that passes through the vertical axis AX.

  In the present embodiment, each block body includes inner side surfaces 161g to 166g that face the vertical axis AX. The inner side surface of a certain block body is spaced apart from the inner side surface of another block body with respect to the vertical axis AX. Thereby, the 2nd distribution space S3 surrounded by the circumferential direction by the six block bodies and the six connection bodies is formed in the central portion of the base 16. All the first distribution spaces S2 communicate with the second distribution space S3. Since each block body includes the inner side surfaces 161g to 166g, the second distribution space S3 can be made larger.

  Therefore, in this embodiment, the planar shape of one block body included in the base 16 is a pentagon. Referring to FIG. 5, for example, the first block body 161 has five side surfaces: a first outer side surface 161c, a second outer side surface 161d, a first side surface 161e, a second side surface 161f, and an inner side surface 161g.

  In addition, in the said description, each side surface which forms 1st distribution space S2, for example, the 1st side surface 161e of the 1st block body 161, and the 2nd side surface 162f of the 2nd block body 162 shall be mutually parallel. did. However, these side surfaces are not necessarily completely parallel, and may have a shape in which the interval W3 extends from the outer surface side toward the inner surface side, for example. In this case, in the first distribution space S2, the opening area perpendicular to the direction extending radially from the vertical axis AX is larger on the inner surface side than on the outer surface side. Therefore, the air that has flowed into the first circulation space S2 from the outside is less likely to stay in the first circulation space S2. Furthermore, these side surfaces do not necessarily have to be configured by a single plane. For example, as long as the opening area of the first distribution space S2 is larger on the inner surface side than on the outer surface side, the side surface may be a combination of a plurality of continuous planes. However, in this case, the planar shape of one block body is not strictly a pentagon.

  Moreover, as shown in FIG. 1, the groove width of the groove part 12c formed in the cylindrical body 12 may be the same as the interval W3 of the first flow space S2. In this case, the groove 12c and the first distribution space S2 may communicate with each other. Thereby, an air circulation path is easily formed between the outside of the storage container 10 and the storage space S1.

  Further, the vertical length L3 of each block body may be equivalent to the vertical length of one layer such as the first layer 121 included in the cylindrical body 12, as shown in FIG.

  Next, six connected bodies will be described. Each coupling body is, for example, a flat plate member made of steel. For example, for the first connection body 18 a, one surface of the first connection body 18 a is connected to the first side surface 161 e of the first block body 161. On the other hand, the surface of the first connecting body 18a opposite to the surface is connected to the second side surface 162f of the second block body 162. Thereby, the 1st connection body 18a can connect the 1st block body 161 and the 2nd block body 162. FIG. In addition, although each connection body and each block body are not shown in figure, you may connect with a volt | bolt etc.

  A part of each connected body has the same dimension as the interval W3 of the first distribution space S2. Thereby, the 1st distribution space S2 of the space | interval W3 is formed because a connection body is arrange | positioned between the block bodies which mutually oppose in the circumferential direction. That is, by appropriately changing the dimension of the portion corresponding to the interval W3 of each connecting body, it is possible to adjust the interval W3 of the first distribution space S2, and thus the size of the hexagon of the outer shape of the base 16. it can.

  Moreover, as shown in FIG. 2, the length L4 of each connection body in the vertical direction is shorter than the length L3 of each block body in the vertical direction. For example, the length L4 may be about half of the length L3. Thereby, the air that has flowed into the first circulation space S2 from the outside can also flow into the second circulation space S3 and reach the bottom surface of the cask C. In addition, in the example of this embodiment, each coupling body is connected to each block body so that a part contacts the cask C, but may be connected to each block body so as not to contact the cask C. . Thereby, since the flow of the air near the bottom face of the cask C can be increased, it may be more advantageous for removing heat from the cask C.

  Moreover, each connection body is arrange | positioned at the base 16 so that it may be contained in the projection area | region of the cask C by vertical direction view, as shown in FIG. Thereby, in 1st communication space S2, the opening area | region R (an example is shown with a thick frame in FIG. 5) which faces the clearance gap in storage space S1 represented by the space | interval G can be provided widely.

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

  The storage container 10 that stores the cask C according to the present embodiment includes a hexagonal cylindrical body 12 that stores the cask C therein, and a base that is disposed below the cylindrical body 12 and supports the cylindrical body 12. 16. The base 16 includes six block bodies spaced apart in the circumferential direction, for example, a first block body 161 to a sixth block body 166, and a connecting member that connects the six block bodies.

  According to such a storage container 10, in the base 16, the block bodies are separated from each other with a gap W <b> 3 in the circumferential direction, so that the first distribution space S <b> 2 and the second distribution space are between the block bodies. A distribution space S3 is formed. As shown in FIG. 2, the first distribution space S2 and the second distribution space S3 can introduce air introduced from the outside of the storage container 10 into the storage space S1 as cask C or heat removal air for the storage container 10. It is. The air introduced in this way 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 It is discharged to the outside from a notch 12d formed in the cylindrical body 12. That is, according to the structure of the base 16, the space between each block body becomes an air flow path as it is. Therefore, for example, the weight of the base 16 in the present embodiment can be reduced as compared with a base that can be regarded as one structure as a whole and in which an opening and a passage for circulating air are formed by notches or the like. Can do. Moreover, the weight reduction of the base container 16 is implement | achieved, and the weight reduction of the storage container 10 whole is also implement | achieved.

  Further, according to the storage container 10, the base 16 has a larger space area than the base on which many openings and passages are formed, and more air can be introduced from the outside. The heat removal performance can be improved.

  Furthermore, according to the storage container 10, the shape of each block body is simplified in the base 16, and as a result, it is advantageous for simplifying the structure of the storage container 10 including the base 16 and pulling base 16. It becomes. Such simplification of the structure is also advantageous in that the manufacturing cost is reduced. Furthermore, since the shape of each block body is simplified, the size of the block body can be relatively easily changed and remanufactured, so the size of the first distribution space S2 and the second distribution space S3. It is possible to easily adjust dimensions such as the interval W3 that defines

  In the storage container 10 according to the present embodiment, the six block bodies may be disposed below the inner corner portions of the hexagonal cylindrical body 12.

  According to such a storage container 10, compared with the case where each block body is not respectively arrange | positioned under the inner corner | angular part of the hexagonal columnar cylindrical body 12, for example, the storage container 10 is made to stand on the ground. This is advantageous in terms of the stability of the posture of the storage container 10 when the storage container 10 is in use.

  Moreover, in the storage container 10 which concerns on this embodiment, six block bodies are the upper surfaces 161a-166a in which a part faces the space inside the cylindrical body 12, respectively, and the bottom surface on the opposite side of the upper surfaces 161a-166a 161b to 166b may be included.

  According to such a storage container 10, the base 16 does not have a structure divided into a plurality of upper and lower layers. Therefore, the base 16 can sufficiently secure an effective height, which is advantageous in strength.

  Moreover, in the storage container 10 which concerns on this embodiment, the space | interval W3 of the block bodies which mutually oppose in the circumferential direction among six block bodies is constant, or the side of the outer surface of block bodies is on the inner surface side. It is good also as what expands toward.

  Here, the outer side surfaces of the block bodies correspond to the above-described outer side surfaces 161c to 166c or the outer side surfaces 161d to 166d. Further, the inner side surfaces of the block bodies correspond to the inner side surfaces 161g to 166g illustrated above. When satisfy | filling said each condition, in order to form 1st distribution space S2, the block bodies which oppose in the circumferential direction are arrange | positioned spaced apart by the space | interval W3. Here, the circumferential direction specifically refers to a circumferential direction when it is assumed that a circle is drawn on a horizontal plane with the vertical axis AX as a center. For example, the first block body 161 includes two side surfaces extending radially about the vertical axis AX, that is, a first side surface 161e and a second side surface 161f. Similarly, the second block body 162 includes a first side surface 162e and a second side surface 162f. That is, for example, between the first block body 161 and the second block body 162, the first side surface 161e of the first block body 161 and the second side surface 162f of the second block body 162 are separated by a distance W3. , Facing in parallel.

  According to such a storage container 10, in the base 16, the air introduced into the first distribution space S2 is introduced into the storage space S1 or the second distribution space S3 without stagnation. Therefore, the storage container 10 can further improve the heat removal performance.

  Moreover, in the storage container 10 which concerns on this embodiment, a connection member is six connection bodies which connect the block bodies which mutually oppose in the circumferential direction among six block bodies, respectively, ie, a 1st connection body. 18a-6th connection body 18f is provided.

  According to such a storage container 10, since the size of the connecting body itself defines the interval W3 in the base 16, the size of the connecting body can be reduced within the allowable range. Pulling the base 16 contributes to the weight reduction of the storage container 10.

  In the storage container 10 according to the present embodiment, the length L4 in the vertical direction of the six linked bodies may be shorter than the length L3 in the vertical direction of the six block bodies.

  According to such a storage container 10, in the base 16, the air introduced into the first distribution space S2 is introduced into the second distribution space S3. Therefore, the air introduced from the outside can touch the bottom surface of the cask C facing the second circulation space S3, and can go back and forth between the second circulation spaces S3 facing each other with the vertical axis AX as a reference. Therefore, the storage container 10 can further improve the heat removal performance.

  Further, in the storage container 10 according to the present embodiment, the six linked bodies may be included in the projection region of the cylindrical body 12 when viewed in the vertical direction.

  According to such a storage container 10, when a plurality of storage containers 10 are arranged to be stacked and arranged close to each other on the outer surfaces, the connected bodies provided in the storage containers 10 adjacent to each other collide with each other. This can be suppressed.

(Second Embodiment)
Next, the storage container according to the second embodiment will be described. FIG. 6 is a vertical sectional view showing the configuration of the storage container 30 according to this embodiment. In addition, in the storage container 30, the same code | symbol is attached | subjected to the same structure as the storage container 10 which concerns on 1st Embodiment, and description is abbreviate | omitted.

  In the storage container 10 according to the first embodiment, the cask C is placed directly on the upper surfaces 161a to 166a of the base 16 in the storage space S1. On the other hand, the storage container 30 according to the present embodiment further includes a plate-like member 20 that is supported by the block body constituting the base 16 and on which the cask C is placed.

  The plate member 20 includes a metal disc 22 and a plurality of metal legs 24. The outer diameter of the disc 22 is the same as or larger than the outer diameter DC of the cask C and smaller than the inner diameter D2 of the cylindrical body 12. It is assumed that the thickness T of the disk 22 can withstand the weight of the cask C. The plurality of leg portions 24 are arranged on the outer periphery of the lower surface in the vertical direction of the disc 22 at equal intervals, that is, without contact. The end portion of the leg portion 24 that is not connected to the disc 22 is in contact with any one of the upper surfaces 161 a to 166 a of the block bodies constituting the base 16. The upper surface in the vertical direction of the disc 22 is a surface that contacts the cask C, and is located at a height H from the upper surfaces 161a to 166a of each block body. However, the dimension of the height H is larger than the dimension of the thickness T of the disc 22.

  According to such a storage container 30, the air introduced into the second circulation space S3 from the first circulation space S2 contacts the lower surface in the vertical direction of the disk 22 as shown in FIG. It passes between the leg portions 24 and is guided to the gap space in the storage space S1. That is, the air introduced from the outside into the first distribution space S2 is more difficult to stay in the first distribution space S2. Therefore, the storage container 30 can further improve the heat removal performance.

(Third embodiment)
Next, the storage container according to the third embodiment will be described. FIG. 7 is a perspective view showing a configuration of the storage container 40 according to the present embodiment. In FIG. 7, drawing of the cylindrical body 12 and the lid body 14 is omitted. FIG. 8 is a perspective view showing the configuration of the base 46 included in the storage container 40. In addition, in the storage container 40, the same code | symbol is attached | subjected to the same structure as the storage container 10 which concerns on 1st Embodiment, and description is abbreviate | omitted.

  In each of the above embodiments, in the base 16, the connecting members that connect the six block bodies are the six connected bodies that connect the block bodies facing each other in the circumferential direction, that is, the first connected body 18 a. -The 6th connection body 18f shall be provided. On the other hand, the connecting member in the present embodiment includes a connecting structure 48 instead of the six connecting bodies.

  The base 46 in the present embodiment includes six block bodies, that is, a first block body 261 to a sixth block body 266 and a connection structure 48. The shape and arrangement of the first block body 261 to the sixth block body 266 are the same as those of the first block body 161 to the sixth block body 166 in the above embodiments.

  The connection structure 48 is, for example, a gantry configured by combining a plurality of H-section steels. The connection structure 48 in this embodiment has six arms extending radially, that is, a first arm 481, a second arm 482, a third arm 483, a fourth arm 484, and a fifth arm 485. And a sixth arm portion 486. The first arm portion 481 to the sixth arm portion 486 extend radially at intervals of 60 ° with respect to the vertical axis AX on the horizontal plane. One end of each of the six arm portions of the present embodiment is connected in the vicinity of the vertical axis AX. On the other hand, the other ends of the six arm portions are each connected to one of the six block bodies.

  Generally, the H-section steel includes upper and lower flanges facing each other and a web connecting both flanges. In each H-shaped steel forming the six arms, the upper flange faces the storage space S1 and supports the disc 22 on which the cask C is placed as shown in FIG. As an example, the disc 22 is the same as that included in the plate-like member 20 in the second embodiment. In this embodiment, the disc 22 is attached to each flange surface 48a above the six arms by welding or the like.

  On the other hand, in each H-section steel forming six arms, a part of the lower flange is supported on one of the upper surfaces 261a to 266a of each block body as shown in FIGS. . That is, the six arm portions are respectively attached to the upper surfaces of the six block bodies. For example, the first arm portion 481 is attached to the upper surface 261a of the first block body 261. In the present embodiment, the outer end portions of the six arm portions are fastened to any one of the upper surfaces 261a to 266a of each block body using a plurality of bolts 44, respectively.

  Moreover, the connection structure 48 of this embodiment is provided with the auxiliary | assistant connection member 42 which connects the two arm parts adjacent to the circumferential direction. That is, the connection structure 48 includes six auxiliary connection members 42. Moreover, in this embodiment, the edge part of the two auxiliary | assistant connection members 42 adjacent to the circumferential direction has opposed the arm part. That is, the extension lines of the two auxiliary connecting members 42 intersect at the position of the arm portion. Therefore, the six auxiliary connecting members 42 have a substantially hexagonal shape. Further, the arm portion extends from the crossing position of the extension line of the auxiliary connecting member 42 to the inner peripheral side. That is, the arm part of the present embodiment extends from the connection position of the auxiliary coupling member 42 to both the inner peripheral side and the outer peripheral side. The first arm portion 481 to the sixth arm portion 486 are connected to other arm portions on the inner peripheral side of the connection position of the auxiliary connecting member 42. The first arm portion 481 to the sixth arm portion 486 are attached to the upper surface of the block body on the outer peripheral side from the connection position of the auxiliary connecting member 42. The six auxiliary connecting members 42 can be made of, for example, an H-shaped steel that is smaller than the H-shaped steel that forms the six arms.

  According to such a storage container 40, instead of the first connecting body 18a to the sixth connecting body 18f as included in the base 16 in each of the above embodiments, the connecting structure 48 made of H-section steel. By using the base 46 including the base 46, the entire base 46 can be stiffened.

  Moreover, in the base 46, by using the connection structure 48 which contributes to stiffening, as shown in FIG. 8, the vertical length L13 of the first block body 261 to the sixth block body 266 is set to the first block body 266. It can be made shorter than the length L3 of the vertical direction in the base 16 of embodiment.

  Furthermore, since the connecting structure 48 connects the six block bodies with the corresponding six arm portions, the space between the block bodies in the base 46 is the same as that of the base 16 in the first embodiment. The same size is maintained. Therefore, according to the storage container 40, similarly to the storage container 10 according to the first embodiment, the heat removal performance can be improved.

  Further, in the storage container 40 according to the present embodiment, the base 46 has six arms and six blocks attached via a plate 49 as shown in FIGS. 7 and 8. It is good. The plate body 49 is made of metal, for example. For example, when viewing the first arm portion 481, one plate body 49 is disposed between the lower flange on the outer end side of the first arm portion 481 and the upper surface 261 a of the first block body 261. The same applies to the second arm portion 482 to the sixth arm portion 486. That is, in this embodiment, the base 46 is provided with a total of six plate bodies 49. However, a plurality of plate bodies 49 may be stacked and installed between one arm portion and one block body that supports the arm portion for height adjustment or the like.

  Further, as shown in FIG. 8, each of the plurality of plate bodies 49 may be on the center of gravity of the upper surfaces 261 a to 266 a of the first block body 261 to the sixth block body 266. In FIG. 8, the center of gravity axis CG passing through the center of gravity of each of the upper surfaces 261a to 266a is illustrated by a one-dot chain line. That is, in the present embodiment, the horizontal plane of the plate body 49 intersects the center of gravity axis CG.

  In this case, the six arm portions are respectively attached to the six block bodies via the plate body 49. At this time, portions of the six arms that are not in contact with the plate body 49 are lifted from the upper surfaces 261a to 266a of the respective block bodies by the height at which the plate body 49 is installed. Therefore, the weight of the cask C is transmitted to each block body from the position where the plate body 49 is disposed. On the other hand, since the six plate bodies 49 are on the center of gravity of the upper surface of each block body as described above, each block body transmits the load received from the plate body 49 to the ground side approximately equally over the entire bottom surface. . That is, the contact surface pressure between the bottom surface of each block body and the ground is approximately equal. Moreover, even if it sees in the base 46 whole, the contact surface pressure of the whole bottom face of the base 46 and the ground will become substantially equal.

  According to such a storage container 40, when the cask C is placed on the base 46, the contact surface pressure between the entire bottom surface of the base 46 and the ground has a high region in the central region of the horizontal plane. Since it becomes almost equal without approaching, the stability of the base 46 can be improved.

  In the storage container 40 according to the present embodiment, the arm portion may be connected to another arm portion. Here, the arm portion refers to, for example, at least one arm portion among the first arm portion 481 to the sixth arm portion 486. The same applies to the arms.

  According to such a storage container 40, the stiffening of the entire base 46 can be further strengthened.

  In the storage container 40 according to the present embodiment, the connecting member includes an auxiliary connecting member 42 that connects two of the first arm portion 481 to the sixth arm portion 486 that are adjacent in the circumferential direction. Also good.

  According to such a storage container 40, the stiffening of the entire base 46 can be further strengthened.

  Further, in the storage container 40 according to the present embodiment, the arm portion may extend from the connection position of the auxiliary connecting member 42 to the outer peripheral side.

  According to such a storage container 40, as a result, the size and shape of the auxiliary connecting member 42 are difficult to affect the flow of air introduced from the space between the block bodies in the base 46. be able to. Therefore, according to the storage container 40, similarly to the storage container 10 according to the first embodiment, the heat removal performance can be improved.

  In the storage container 40 according to the present embodiment, the storage container 10 includes a plate-like member that is supported on the base 46 side and on which the cask C is placed. In the present embodiment, the plate member corresponds to the disc 22.

  According to such a storage container 40, since the cask C is placed on the plate-like member, it can be advantageous in improving the stability of the cask C on the connection structure 48.

(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 and the like according to the above-described embodiments are integrated and arranged 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.

  Moreover, according to the integrated body 100, since the storage containers 10 etc. which are advantageous for weight reduction are integrated, the integrated body 100 as a whole is advantageous for weight reduction. Therefore, for example, it can be advantageous in terms of easy installation of the storage container 10 and the like when constructing the integrated body 100.

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

DESCRIPTION OF SYMBOLS 10, 30, 40 Storage container 12 Cylindrical body 16,46 Base 18a-18f Connection body 20 Plate-shaped member 22 Disc 42 Auxiliary connection member 48 Connection structure 49 Plate body 100 Integration body 161-166 Block body 161a-166a Upper surface 161b to 166b Lower surface 161c to 166c First outer surface 161d to 166d Second outer surface 161g to 166g Inner surface 481 to 486 Arm C Cask

Claims (14)

A storage container for storing a cask,
A hexagonal cylindrical body that houses the cask;
A base that is disposed at a lower portion of the cylindrical body and supports the cylindrical body,
The base is
6 blocks separated in the circumferential direction;
And a connecting member that connects the six block bodies.   The storage container according to claim 1, wherein each of the six block bodies is disposed at a lower portion of an inner corner portion of the cylindrical body having a hexagonal column shape. Each of the six block bodies is
An upper surface partially facing the space inside the cylindrical body;
A bottom surface opposite the top surface;
The storage container of Claim 1 or 2 containing this.   The space | interval of the block bodies which mutually oppose in the circumferential direction among the said 6 block bodies is constant, or any one of Claims 1-3 which spreads toward the inner surface side from the outer surface side of the said block bodies. The storage container according to claim 1.   The storage according to any one of claims 1 to 4, wherein the connecting member includes six connecting bodies that connect the block bodies facing each other in the circumferential direction among the six block bodies in the circumferential direction. container.   The storage container according to claim 5, wherein the length of the six connected bodies in the vertical direction is shorter than the length of the six block bodies in the vertical direction.   The storage container according to claim 5 or 6, wherein the six coupling bodies are included in a projection region of the cylindrical body as viewed in a vertical direction. The connecting member includes six arms extending radially,
The storage container according to any one of claims 1 to 4, wherein each of the six arm portions is attached to an upper surface of each of the six block bodies.   The storage container according to claim 8, wherein the arm portion and the block body are attached via a plate body.   The storage container according to claim 8 or 9, wherein the arm portion is connected to the other arm portion.   The storage container according to claim 8 or 9, wherein the connection member includes an auxiliary connection member that connects the two arm portions adjacent to each other in the circumferential direction.   The storage container according to claim 11, wherein the arm portion extends from the connection position of the auxiliary connecting member to the outer peripheral side.   The storage container of any one of Claims 1-12 provided with the plate-shaped member supported by the said base side and mounting the said cask. 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 13, 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 respectively in the other two cylindrical bodies. An aggregate that faces and is arranged in a honeycomb.

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