JP2019138781A - Nuclear reactor building - Google Patents

Abstract

To provide a nuclear reactor building that can be applied to an existing nuclear reactor and can suppress vibrations of a floor caused when a flying object hits against the floor.SOLUTION: A nuclear reactor building 1 includes: protection plates (protection members) 4A and 4B arranged on the outside of an outer wall 2; and a plurality of pin supporting parts (supporting parts) 5A and 5B in parts of the outer wall 2 which are connected to the floor 3 of each stage on the ground, the pin supporting parts supporting the protection plates 4A and 4B so that the protection plates 4A and 4B can rotate in a vertical direction when a flying object hits against the protection plates 4A and 4B.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a reactor building that houses a reactor containment vessel and the like.

  In recent years, reactor buildings have been required to strengthen safety measures against collisions of flying objects such as aircraft. Patent Document 1 proposes to reinforce a floor of a predetermined region corresponding to a joint portion with an outer wall with a thickness dimension larger than that of a floor of another region on the floor of the ground floor of the reactor building. . This reduces vibration transmitted from the outer wall to the floor when a flying object such as an aircraft collides.

Japanese Unexamined Patent Publication No. 2006-211987

  However, in the above-described conventional technology, the structure of the reactor building needs to be changed, and a large-scale work is required for the existing reactor building.

  The present invention has been made in view of the above-mentioned matters, and the purpose of the present invention is to provide a reactor building that can be easily applied to an existing reactor building and that can suppress vibration of the floor when a flying object collides. It is to provide.

  In order to achieve the above object, a reactor building of the present invention is provided in a protective member disposed outside an outer wall and a portion connected to the floor of each floor on the outer wall, and a flying object is attached to the protective member. And a plurality of support portions that support the protection member so that the protection member can rotate or move in the vertical direction when a collision occurs.

  According to the present invention, even an existing nuclear reactor building can be easily applied, and floor vibrations when a flying object collides can be suppressed.

It is sectional drawing which shows the whole structure of the reactor building in the 1st Embodiment of this invention. It is sectional drawing which shows the principal part structure of the nuclear reactor building in the 1st Embodiment of this invention. It is the figure seen from the arrow III direction in FIG. It is sectional drawing which shows the principal part structure of the reactor building in the 2nd Embodiment of this invention. It is the figure seen from the arrow V direction in FIG. It is sectional drawing which shows the principal part structure of the reactor building in one modification of this invention. It is sectional drawing which shows the principal part structure of the reactor building in the other modification of this invention. It is sectional drawing which shows the principal part structure of the reactor building in the 3rd Embodiment of this invention. It is the figure seen from the arrow IX direction in FIG.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a cross-sectional view showing the overall structure of the reactor building in this embodiment (however, for convenience, the main structure of FIG. 2 is not shown). FIG. 2 is a cross-sectional view showing the main structure of the reactor building in the present embodiment. FIG. 3 is a view seen from the direction of arrow III in FIG.

  The reactor building 1 of this embodiment has a plurality of floors (in FIG. 1, the third floor above the ground and the third floor below), and is composed of an outer wall 2 and a floor 3 made of reinforced concrete. In addition, the reactor building 1 includes a plurality of sets of protective plates (in other words, plate-shaped protective members) 4A and 4B arranged on the outer side of the outer wall 2 and portions connected to the floor 3 of each floor on the outer wall 2 ( Specifically, as shown in FIG. 2, a plurality of pin support portions 5A and 5B (support portions) provided in a thickness d of the floor 3 and a vertical range h including the same dimension d above and below the floor d. It has.

  The pin support portion 5A is provided at a portion of the outer wall 2 connected to the floor 3 of the predetermined floor, and supports the upper end portion of the protection plate 4A via a pin extending in the horizontal direction (left and right direction in FIG. 3). ing. More specifically, a pin is fixed to one of the upper end portions of the pin support portion 5A or the protection plate 4A, and the above-described pin is inserted to the other of the upper end portions of the pin support portion 5A or the protection plate 4A. A pin hole is formed.

  The pin support portion 5B is provided in a portion of the outer wall 2 that is connected to the floor 3 below the predetermined floor, and the protection plate 4B is connected via a pin extending in the horizontal direction (left and right direction in FIG. 3). Supports the lower end. More specifically, a pin is fixed to one of the lower end portions of the pin support portion 5B or the protection plate 4B, and the aforementioned pin is inserted to the other of the lower end portions of the pin support portion 5B or the protection plate 4B. A pin hole is formed.

  4 A of guard plates are arrange | positioned so that the lower end part may leave | separate from the outer wall 2 rather than an upper end part. The protective plate 4B is disposed such that the upper end portion thereof is further away from the outer wall 2 than the lower end portion. And the pin connection part 6 (for example, hinges in detail) which connects the lower end part of the protection board 4A and the upper end part of the protection board 4B via the pin extended in a horizontal direction (left-right direction in FIG. 3) is provided. ing.

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

  Assume that a flying object such as an aircraft collides with the reactor building 1. At this time, since the flying object collides with the protective plates 4A and 4B before the outer wall 2, the load can be reduced. Further, when the flying object collides with the protection plates 4A and 4B, the protection plates 4A and 4B rotate in the vertical direction via the pins, so that it is possible to prevent the vertical rotational moment from being transmitted to the outer wall 2. In addition, since the pin support portions 5A and 5B are provided on the portion of the outer wall 2 connected to the floor 3 of each floor on the ground (in other words, the portion close to the floor 3), the other portion of the outer wall 2 (in other words, Compared with the case where the pin support portions 5A and 5B are provided on the portion far from the floor 3, a vertical rotational moment is generated on the floor 3 due to, for example, a horizontal load transmitted from the pin support portions 5A and 5B to the outer wall 2. Can be suppressed. Therefore, the vibration of the floor 3 in the vertical direction can be suppressed.

  In the present embodiment, for the existing reactor building, the outer wall 2 is anchored and the pin support portions 5A and 5B are attached, and then the protection plates 4A and 4B and the pin connection portion 6 are installed. . Therefore, even existing reactor buildings can be easily applied.

  A second embodiment of the present invention will be described with reference to FIGS. Note that in this embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  FIG. 4 is a cross-sectional view showing the main structure of the reactor building in the present embodiment. FIG. 5 is a view seen from the direction of arrow V in FIG.

  The reactor building 1 of the present embodiment includes a plurality of sets of protective pipes (in other words, rod-shaped protective members) 7A and 7B arranged on the outside of the outer wall 2 and a portion connected to the floor 3 of each floor on the ground. And a plurality of sets of pin support portions 5A and 5B provided in the.

  The pin support portion 5A is provided at a portion of the outer wall 2 connected to the floor 3 of the predetermined floor, and supports the upper end portion of the protective pipe 7A via a pin extending in the horizontal direction (left and right direction in FIG. 5). ing. More specifically, a pin is fixed to one of the upper end portions of the pin support portion 5A or the protective pipe 7A, and the aforementioned pin is inserted to the other of the upper end portions of the pin support portion 5A or the protective pipe 7A. A pin hole is formed.

  The pin support portion 5B is provided at a portion of the outer wall 2 that is connected to the floor 3 below the predetermined floor, and the protective pipe 7B extends through a pin extending in the horizontal direction (left-right direction in FIG. 5). Supports the lower end. More specifically, a pin is fixed to one of the lower end portions of the pin support portion 5B or the protective pipe 7B, and the aforementioned pin is inserted to the other of the lower end portions of the pin support portion 5B or the protective pipe 7B. A pin hole is formed.

  The protective pipe 7 </ b> A is arranged such that the lower end portion thereof is further away from the outer wall 2 than the upper end portion. The protective pipe 7B is arranged such that its upper end is farther from the outer wall 2 than its lower end. A pin connecting portion 6 (in detail, for example, a hinge) is provided for connecting the lower end portion of the protective pipe 7A and the upper end portion of the protective pipe 7B via pins extending in the horizontal direction (left and right direction in FIG. 5). ing.

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

  Assume that a flying object such as an aircraft collides with the reactor building 1. At this time, since the flying object collides with the protective pipes 7A and 7B before the outer wall 2, the load can be reduced. Further, when the flying object collides with the protective pipes 7A and 7B, the protective pipes 7A and 7B rotate in the vertical direction via the pins, so that it is possible to prevent the vertical rotational moment from being transmitted to the outer wall 2. In addition, since the pin support portions 5A and 5B are provided on the portion of the outer wall 2 connected to the floor 3 of each floor on the ground (in other words, the portion close to the floor 3), the other portion of the outer wall 2 (in other words, Compared with the case where the pin support portions 5A and 5B are provided on the portion far from the floor 3, a vertical rotational moment is generated on the floor 3 due to, for example, a horizontal load transmitted from the pin support portions 5A and 5B to the outer wall 2. Can be suppressed. Therefore, the vibration of the floor 3 in the vertical direction can be suppressed.

  Moreover, in this embodiment, what is necessary is just to install the protection pipes 7A and 7B and the pin connection part 6 after anchoring the outer wall 2 and attaching the pin support parts 5A and 5B to the existing reactor building. . Therefore, even existing reactor buildings can be easily applied.

  In this embodiment, since the protective pipes 7A and 7B are provided in place of the protective plates 4A and 4B of the first embodiment, the weight can be reduced.

  In the first embodiment, as an example, a pair of protective plates (flat plates) 4A and 4B connected to each other via the pin connection portion 6 are provided between the pin support portions 5A and 5B. In the second embodiment, the case where a pair of protective pipes (straight rods) 7A and 7B connected to each other via the pin connection portion 6 is provided between the pin support portions 5A and 5B has been described as an example. However, the present invention is not limited to this, and modifications can be made without departing from the spirit and technical idea of the present invention. That is, one protective plate or one protective pipe may be provided between the pin support portions 5A and 5B. However, as in the modification shown in FIG. 6 or FIG. 7, for example, the protective plate 4C or 4D (or the protective pipe 7C or 7D) is bent so that the central portion in the vertical direction is farther from the outer wall 2 than the end portions on both sides. Shape. Also in such a modification, the same effect as the above embodiment can be obtained.

  A third embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  FIG. 8 is a cross-sectional view showing the main structure of the reactor building in the present embodiment. FIG. 9 is a view as seen from the direction of the arrow IX in FIG.

  The reactor building 1 of the present embodiment is provided at a portion connecting to a plurality of protective wires (in other words, rope-shaped protective members) 8 arranged outside the outer wall 2 and the floor 3 of each floor on the ground. And a plurality of roller support portions 9 (support portions). The plurality of roller support portions 9 include a rotatable roller (pulley) so that most of the protective wire 8 (specifically, a portion below the uppermost roller support portion 9) extends in the vertical direction. The protective wire 8 is supported via

  For example, a U-shaped locking tool 10 is installed on the outer wall 2 of the reactor building 1, and a hook is provided at the upper end of the protective wire 8, and the protective wire 8 is locked by the hook. 10 is locked. A damper 11 is installed on the ground, and a lower end portion of the protective wire 8 is connected to the damper 11. The damper 11 has a function of applying tension to the protective wire 8 and absorbing a load when a flying object collides with the protective wire 8.

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

  Assume that a flying object such as an aircraft collides with the reactor building 1. At this time, since the flying object collides with the protective wire 8 before the outer wall 2, the load can be reduced. Further, the load generated on the protective wire 8 can be reduced by the damper 11. Further, when the flying object collides with the protective wire 8, the protective wire 8 moves in the vertical direction via the roller, so that it is possible to suppress transmission of the vertical rotational moment to the outer wall 2. Further, since the roller support portion 9 is provided in a portion (in other words, a portion close to the floor 3) connected to the floor 3 of each floor on the outer wall 2, the other portion (in other words, the floor 3). Compared with the case where the roller support portion 9 is provided in a portion far from the surface, it is possible to suppress the vertical rotation moment from being generated on the floor 3 due to, for example, a horizontal load transmitted from the roller support portion 9 to the outer wall 2. Therefore, the vibration of the floor 3 in the vertical direction can be suppressed.

  Moreover, in this embodiment, what is necessary is just to install the protective wire 8 and the damper 11 after anchoring the outer wall 2 and attaching the roller support part 9 and the locking tool 10 with respect to the existing reactor building. Therefore, even existing reactor buildings can be easily applied.

  In this embodiment, since the protective wire 8 is provided instead of the protective plates 4A and 4B of the first embodiment and the protective pipes 7A and 7B of the second embodiment, the weight can be reduced. .

  In the third embodiment, the case where the protective wire 8 is provided as the rope-shaped protective member supported by the roller support portion has been described as an example. However, the present invention is not limited to this, and the gist and technical idea of the present invention are described. Modifications can be made without departing from the scope. Instead of the protective wire 8, for example, a protective net (specifically, a plurality of protective wires extending in the vertical direction connected by a plurality of protective wires extending in the horizontal direction) may be provided. Or you may provide a protection pipe as a rod-shaped protection member supported by a roller support part, for example. Also in these modified examples, the same effect as the above-described embodiment can be obtained.

1 Reactor building 2 Outer wall 3 Floor 4A, 4B, 4C, 4D Guard plate (protective member)
5A, 5B Pin support part (support part)
6-pin connection 7A, 7B, 7C, 7D Protective pipe (protective member)
8 Protective wire (protective member)
9 Roller support (support)
10 Locking tool 11 Damper

Claims (6)

A protective member disposed outside the outer wall;
A plurality of support members that are provided at portions of the outer wall that connect to the floors of the ground floor and support the protection member so that the protection member can rotate or move vertically when a flying object collides with the protection member. Reactor building characterized by comprising a support part. In the reactor building according to claim 1,
The protective member is a plate-shaped or rod-shaped member,
The support part is a pin support part that supports the protection member via a pin so that the protection member can be rotated in a vertical direction when a flying object collides with the protection member. Reactor building. In the reactor building according to claim 2,
A first pin support portion provided at a portion connected to the floor of the predetermined floor in the outer wall;
A second pin support portion provided in a portion connected to a floor below the predetermined floor in the outer wall;
A first protection member, the upper end portion of which is supported by the first pin support portion, and the lower end portion of which is arranged so as to be farther from the outer wall than the upper end portion;
A second protective member, the lower end portion of which is supported by the second pin support portion, and the upper end portion of which is arranged so as to be farther from the outer wall than the lower end portion;
A nuclear reactor building comprising: a pin connection portion that connects the lower end portion of the first protection member and the upper end portion of the second protection member via a pin. In the reactor building according to claim 2,
A first pin support portion provided at a portion connected to the floor of the predetermined floor in the outer wall;
A second pin support portion provided in a portion connected to a floor below the predetermined floor in the outer wall;
The upper end portion is supported by the first pin support portion, the lower end portion is supported by the second pin support portion, and the center portion in the vertical direction is bent so as to be farther from the outer wall than the upper end portion and the lower end portion. A reactor building comprising a protective member of a specified shape. In the reactor building according to claim 1,
The protective member is a rope-shaped or rod-shaped member,
The support portion is a roller support portion that supports the protection member via a roller so that the protection member can move in a vertical direction when a flying object collides with the protection member. Reactor building. In the reactor building according to claim 5,
The said protection member is a rope-shaped member, Comprising: While the upper end part is latched by the said outer wall via a locking tool, the lower end part was connected to the damper, The nuclear reactor building characterized by the above-mentioned.

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