JP6547085B1 - Closing device - Google Patents

Abstract

The present invention provides a closing device that is installed in a building and can be reliably opened and closed. A closing device according to the present invention closes an opening t2 of a building T, opens a rectangular frame-shaped front frame 3a having a predetermined area, and a rectangular side surface joined to the front frame 3a. A three-dimensional frame structure 3 including frames 3b, 3c, 3d, and 3e, a single rotating shaft 5c and 6c, and first flat plates 5a and 6a and second flat plates 5b and 6b that can be opened and closed around the rotating shafts 5c and 6c. The first and second opening / closing support mechanisms 5 and 6 to which the first flat plates 5a and 6a are fixed, and the side surfaces fixed to the second flat plates 5b and 6b and in contact with the one side frame The front closing plate 2 is selected such that the front closing plate 2 is selected in either the state or the front closing state in which the entire front open face is closed, and the front closing plate 2 is held so as not to rotate in the side and front closing states. And holding mechanism 10 to be configured. [Selected figure] Figure 1

Description

  The present invention relates to a closure device.

Heretofore, the following has been conducted as one of the safety measures for nuclear power plants.
A plurality of openings are provided in the reactor building, and BOPs (blow-out panels) are temporarily fixed to the plurality of openings by clips or the like. And, when the pressure inside the reactor building becomes abnormally high due to the occurrence of an abnormal event, removing the BOP reduces the pressure inside the reactor building and avoids major damage to the reactor building itself. .

However, at this time, since the inside of the reactor building and the outside penetrate, the radioactive substance in the inside of the building, hydrogen and the like may leak to the outside.
As a measure against this, Patent Document 1 discloses the following configuration.
In Patent Document 1, a sliding shield door is attached to the outside of the opening of the reactor building. Then, when an abnormal event occurs, the shielding door is slid to shield the opening.

Patent 6430055 (FIG. 1, FIG. 2, paragraph 0019, etc.)

However, a tornado protection net is provided outside the opening of the reactor building.
Therefore, attachment of the sliding type | mold shielding door of patent document 1 is difficult. Moreover, since the shielding door of patent document 1 is a slide type, there exists a problem that the area twice as large as a shielding door is needed.

  The present invention has been made in view of the above situation, and an object thereof is to provide a closing device which is attached to a building and which can be reliably opened and closed.

  In order to solve the above-mentioned subject, the closure device of the present invention is a closure device which closes an opening of a building, and has a rectangular frame shaped front frame which has an open predetermined area, and at least upper and lower sides of the front frame. A three-dimensional frame structure including a square side frame joined so as to constitute a side surface extending from the vicinity of two opposing apexes, one rotation axis, and one side thereof is pivotally supported by the rotation axis It has a first flat plate and a second flat plate having a predetermined area that can be freely opened and closed in the opposite direction centering on the rotation axis, and one side of the same front frame to which the side frame is joined A first open / close support mechanism and a second open / close support mechanism in which the first flat plate is fixedly arranged at respective positions in the direction of the top surface and the direction of the bottom opposite to the middle position; First and second support Of the three-dimensional frame structure according to the opening state of the first flat plate and the second flat plate of each of the first and second opening and closing support mechanisms. A side holding state in which the inner side abuts on the right or left side frame frame to close all or a part of the open side of the right side surface or the left side surface, or contacts the front frame inside the three-dimensional frame structure Front closing plate having a predetermined thickness in which any closing state is selected, in which the front closing state for closing the entire front open face is selected, and in the side holding state and the front closing state, the front closing plate And a holding mechanism for holding the position so that it does not rotate.

  According to the present invention, it is possible to provide a closing device which is attached to a building and which can be reliably opened and closed.

The external appearance perspective view of a reactor building. The perspective view of the state which provided multiple closing device units which concern on embodiment of this invention in the opening part of the frame of a reactor building, and closed the front closing plate. The perspective view of the state which provided multiple closing device units which concern on embodiment of this invention in the opening part of the frame of a nuclear reactor building, and opened the front closing plate. The perspective view schematic diagram of the state which closed the front closing plate of the closing device unit of embodiment. The perspective view schematic diagram of the state which opened the front closing plate of the closing device unit of embodiment. The top view close panel is removed in the state which closed the front closing plate, the perspective view typical figure which notched a part of front frame and looked at the left side of the closing device unit. The I direction arrow directional cross-sectional view of FIG. 4 which cut | disconnected the front closing plate of FIG. 4 by the right side. The top view which removed the top surface closing panel and looked at the left front of the closing device unit in the state which closed the front closing plate. The top view close panel is removed in the state which opened the front closing plate, the perspective view schematic diagram which cut off a part of front frame and looked at the left side of the closing device unit. The II direction arrow line view of FIG. 5 cut | disconnected on the right side of the location of the opening of a front frame. The top view which removed the top surface closing panel and looked at the left front of the closing device unit in the state which opened the front closing plate. The expanded sectional view of FIG. FIG. 7 is a top view of the front closing state of the front closing plate in the first opening and closing support mechanism of the first embodiment. The top view of the side holding state of the front closing plate of Example 1. FIG. FIG. 13 is a top view of a front closing state of the front closing plate in the first opening and closing support mechanism of the second embodiment. The top view of the side holding state of the front closing plate of Example 2. FIG. FIG. 21 is a top view of the front closing state of the front closing plate in the first opening and closing support mechanism of the third embodiment. The top view of the side holding state of the front closing plate of Example 3. FIG. The top view of the front closed state of the front closing plate in the 1st opening-closing support mechanism of Example 4. FIG. The top view of the side holding state of the front closing plate of Example 4. FIG. The top view of the front closed state of the front closing plate in the 1st opening-closing support mechanism of Example 5. FIG. The top view of the side holding state of the front closing plate of Example 5. FIG. The top view of the front closed state of the front closing plate in the 1st opening-closing support mechanism of Example 6. FIG. The top view of the side holding state of the front closing plate of Example 6. FIG. The enlarged top view of the junction part of the closing device unit of Example 7, and a housing. III-III sectional drawing of FIG. 19A of Example 7. FIG. The enlarged top view of the junction part of the closing device unit of Example 8, and a housing. IV-IV sectional drawing of FIG. 20 of Example 8. FIG. The enlarged top view of FIG. 8 of a modification. FIG. 14 is a perspective view of a first opening / closing rotational drive device 7A and a first opening / closing support mechanism 5A of Modification 2;

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external perspective view of a reactor building T. As shown in FIG.
Reactor building T is a nuclear facility.
The reactor building T has a plurality of, for example, four to five openings t2 formed in a housing t1 of the outer wall. The opening t2 is an opening that occurs when the blow out panel (BOP) t3 is released.

During normal operation of the reactor, the opening t2 is covered with the blow out panel t3 from the outside, and the inside and the outside of the reactor building T are shut off.
In the opening t2, a blow out panel t3 larger than the opening t2 from the outside is temporarily fixed to the housing t1 by a clip (not shown) or the like.

  FIG. 2 is a schematic perspective view showing a state in which the front closing plate 2 is closed by providing a plurality of closing device units 1 according to the embodiment of the present invention in the opening t2 of the housing t1. FIG. 3 is a schematic perspective view showing a state in which the front closing plate 2 is opened by providing a plurality of closing device units 1 according to the embodiment of the present invention in the opening t2 of the housing t1. In FIG. 2, FIG. 3, the upper part and lower part of the housing t1 are abbreviate | omitted and shown. In FIG. 2 and the following figures, the outside of the reactor building T is rear, the inside of the reactor building T is front, the right is right, and the left is left.

FIGS. 2 and 3 show a case where a plurality of (eight in FIG. 2) closing device units 1 according to the embodiment are provided in an opening t2 formed in a housing t1 of a nuclear reactor building T. FIG. The closing device units 1 attached to the housing t1 are mutually fixed by welding, caulking material, bolts or the like.
When there is no closing device unit 1 adjacent to the right side and / or left side at the opening t2 of the housing t1 of the reactor building T, the right side and / or left side of the closing unit 1 is fixed to the housing t1. It is done. For example, the closing device units 1A, 1B, 1C, 1D shown in FIG.

As shown in FIGS. 2 and 3, the closing device unit 1 is provided with a front closing plate 2 that opens and closes. The front closing plate 2 is open as shown in FIG. 3 when the reactor is in normal operation.
The closing device unit 1 is provided with a predetermined gap from the installation place of the blowout panel t3, and the front frame 3a is disposed inside the reactor building T with the inside of the reactor building T facing inside.

  When an abnormal event occurs in the reactor and the internal pressure of the reactor building T becomes high, the blowout panel t3 is detached outward. As a result, the pressure inside the reactor building T becomes equal to the atmospheric pressure. Thereafter, as shown in FIG. 2, the front closing plate 2 of the closing device unit 1 is closed and the opening t2 is closed. Then, the inside of the reactor building T and the outside are shut off. Therefore, when the blowout panel t3 is detached, leakage of the substance inside the reactor building T to the outside of the reactor building T is suppressed.

  FIG. 4 is a schematic perspective view of the closing device unit 1 of the embodiment in a state in which the front closing plate 2 is closed. FIG. 5 is a schematic perspective view of the closing device unit 1 of the embodiment in a state in which the front closing plate 2 is opened.

<Three-dimensional frame structure 3>
The three-dimensional frame structure 3 of the closing device unit 1 has a front frame 3a and side frames 3b, 3c, 3d and 3e (see FIGS. 6 and 7).

The front closing plate 2 has a predetermined thickness and is opened and closed as shown in FIGS. 4 and 5.
The front frame 3a is a rectangular frame-shaped member in which an opening 3a1 having a predetermined area is formed. The front frame 3a can open and close the opening t2 of the housing t1.

The side frames 3b, 3c, 3d and 3e are four square or elongated members that extend in the depth direction from the vicinity of each of the four apexes of the front frame 3a and are joined to the front frame 3a.
The side frames 3b, 3c, 3d and 3e are formed to constitute the top surface, the bottom surface, the right side surface and the left side surface of the three-dimensional frame structure 3.

The top surface of the three-dimensional frame structure 3 is provided with a top surface closing panel 4t that closes the entire top surface. The top surface closing panel 4t can close the top surface of the three-dimensional frame structure 3.
The bottom surface of the three-dimensional frame structure 3 is provided with a bottom surface closing panel 4b that closes the entire bottom surface. The bottom surface of the three-dimensional frame structure 3 can be closed by the bottom surface closing panel 4b.

  The above-described three-dimensional frame structure 3 forms a structure of the closing device unit 1.

<First opening and closing support mechanism 5 and second opening and closing support mechanism 6>
FIG. 6 is a schematic perspective view of the left side of the closing device unit 1 as viewed from the left side of the closing device unit 1 with the top surface closing panel 4t removed and the front frame 3a partially cut away in a state where the front closing plate 2 is closed.

  7 is a cross-sectional view of the front closing plate 2 of FIG. 4 cut along the right side in the direction of arrow I in FIG.

  FIG. 8 is a top view of the left front side of the closing device unit 1 as viewed from the left front with the top closing panel 4t removed in a state where the front closing plate 2 is closed.

  FIG. 9 is a schematic perspective view of the left side of the closing device unit 1 as viewed from the left side of the closing device unit 1 with the top surface closing panel 4t removed and the front frame 3a partially cut away in a state where the front closing plate 2 is opened.

FIG. 10 is a view on arrow II in FIG. 5 cut at the right side of the location of the opening 3a1 of the front frame 3a.
FIG. 11 is a top view of the left front of the closing device unit 1 with the top closing panel 4t removed with the front closing plate 2 open.

  As shown in FIGS. 7 and 10, a first open / close support mechanism 5 is provided on the upper side of one side of the closing device unit 1. A second open / close support mechanism 6 is provided on the lower side of one side of the closing device unit 1.

As shown in FIG. 8, the first open / close support mechanism 5 has a first flat plate 5a, a second flat plate 5b, and a rotation shaft 5c.
The first flat plate 5a is rotatably supported by the rotation shaft 5c. The first flat plate 5a is fixed to the front frame 3a.

The second flat plate 5b is fixed to the front closing plate 2 and the rotating shaft 5c.
Thus, the second flat plate 5b can be driven by driving the rotation shaft 5c, and the front closing plate 2 can be driven around the rotation shaft 5c.

As shown in FIGS. 6 and 9, the second opening / closing support mechanism 6 has a first flat plate 6a, a second flat plate 6b, and a rotating shaft 6c.
The first flat plate 6a is rotatably supported by the rotation shaft 6c. The second flat plate 6 b is fixed to the rotary shaft 6 c and the front closing plate 2. Thereby, the second flat plate 6b can be driven by driving the rotation shaft 6c, and the front closing plate 2 can be driven around the rotation shaft 5c.

The rotation shaft 5c of the first opening / closing support mechanism 5 and the rotation shaft 6c of the second opening / closing support mechanism 6 are a first opening / closing rotation drive unit 7 and a second opening / closing rotation drive unit 8 (see FIG. 2). Directly or via a driving force transmission mechanism.
The rotation shaft 5 c of the first opening and closing support mechanism 5 is opened and closed in synchronization with the operation of the first opening and closing rotational drive device 7. The rotation shaft 6 c of the second opening and closing support mechanism 6 is opened and closed in synchronization with the operation of the second opening and closing rotational drive device 8.

The first opening / closing rotary drive device 7 has a motor 7a, a first gear 7b and a second gear 7c.
The first gear 7b is fixed to the shaft of the motor 7a. The second gear 7c is fixed to the rotating shaft 5c. The first gear 7b and the second gear 7c mesh with each other.

Similarly, as shown in FIG. 2, the second opening / closing rotary drive 8 includes a motor 8 a, a first gear 8 b, and a second gear 8 c.
The first gear 8b is fixed to the shaft of the motor 8a. The second gear 8c is fixed to the rotating shaft 6c. The first gear 8b and the second gear 8c mesh with each other.

  With the above configuration, by driving the first opening / closing rotational drive unit 7 and the second opening / closing rotational drive unit 8, the rotation shaft 5 c of the first opening / closing support mechanism 5 and the second opening / closing support mechanism 6 The rotating shafts 6c rotate respectively. Then, the second flat plate 5b fixed to the rotating shaft 5c and the second flat plate 6b fixed to the rotating shaft 6c rotate, and the front closing plate 2 fixed to the second flat plates 5b and 6b closes ( 4) (front closing operation) and opening operation (see FIG. 5) can be performed.

<First Detector 9a and Second Detector 9b>
As shown in FIG. 6, a position detection protrusion 2 t is provided in the upper right portion of the front closing plate 2 so as to protrude upward.

  As shown in FIG. 10, a first detector 9a is provided at the upper rear of the front frame 3a. The first detector 9a detects a front closing state of the front closing plate 2 and outputs a front closing signal. In the first detector 9a, as shown in FIG. 7, when the front closing plate 2 is closed to the front frame 3a, the position detection projection 2t of the upper right portion of the front closing plate 2 abuts. Thus, the first detector 9a detects that the front closing plate 2 is closed to the front frame 3a. Therefore, the front closed state of the front closing plate 2 can be detected by the first detector 9a.

  Further, as shown in FIG. 6, the side surface frame 3c is provided with a second detector 9b. The second detector 9b detects the side holding state of the front closing plate 2 and outputs a side holding signal. In the second detector 9b, as shown in FIG. 10, the front closing plate 2 is opened to the side frames 3c and 3e side to be in the side holding state (front open state), so that the position of the upper right portion of the front closing plate 2 The detection projection 2t abuts. Thereby, the second detector 9b detects that the front closing plate 2 is opened up to the side frames 3c and 3e. Therefore, it can be detected by the second detector 9b that the front closing plate 2 is in the side holding state (the front open state).

<Seal structure of closing device unit 1>
FIG. 12 is an enlarged cross-sectional view of FIG.
As shown in FIG. 12, on the surface 2a of the front closing plate 2, a projection s1 is formed along the edge of the front closing plate 2 in a shape slightly smaller than the outer shape of the front closing plate 2 as shown in FIG. ing.

On the other hand, when the front closing plate 2 is closed to the front frame 3a on the side of the back surface 3a1 of the front frame 3a, the rubber strip sealing material s2 is used for sealing with the projection s1 of the front closing plate 2 12) is provided in the shape of a band having a shape facing the projection s1 of the front closing plate 2. As shown in FIG. That is, in the front closed state of the front closing plate 2, the contact portion 3a3 (see FIG. 12) of the front closing plate 2 of the front frame 3a is circulated so as to improve the airtightness between the front closing plate 2 and the front frame 3a. A strip-shaped sealing material s2 having a predetermined width is attached to the back surface 3a1 of the front frame 3a.
The sealing material includes a shield member to be applied like a caulking material.

  With this configuration, when the front closing plate 2 is closed to the front frame 3a, as shown in FIG. 12, the protrusion s1 of the front surface 2a of the front closing plate 2 is a rubber strip seal on the back 3a1 of the front frame 3a. Contact the material s2. The strip-shaped seal material s2 is deformed by the contact of the projection s1 with the strip-shaped seal material s2. Thereby, the space between the front surface 2a of the front closing plate 2 and the back surface 3a1 of the front frame 3a is sealed.

<Holding mechanism 10 of front closing plate 2>
As shown in FIGS. 4 and 9 viewed from the front, the upper and lower portions of the surface 2a of the front closing plate 2 are provided with holding mechanisms 10 for holding the front closing plate 2 in the open state and the closed state, respectively. . By providing the holding mechanism 10 on the surface 2 a of the front closing plate 2, maintenance of the holding mechanism 10 is easy.

The holding mechanism 10 includes a holding member driving device 10a and a holding member 10b.
The holding member drive device 10a has a motor and a rotation-linear conversion mechanism (not shown). The rotation-linear conversion mechanism is a mechanism that converts the rotational movement of the motor into a linear movement. For example, gears and movable racks.

  The holding member 10b is a pin-like or rod-like member. The holding member 10b is fixed to the member converted into the linear motion of the holding member drive device 10a. For example, in the case of a gear and a movable rack, the holding member 10b is fixed to the movable rack.

The holding member 10b is closed when the front closing plate 2 is closed to the front frame 3a (front closed state) (see FIG. 4) and when the front closing plate 2 is opened (side held state) (relative to the front frame 3a) (See FIG. 9) and is projected outward by the holding member drive device 10a. That is, the holding member driving device 10a drives the holding member 10b connected to the holding member driving device 10a when the front surface closing plate 2 is in the front surface closing state and the side surface holding state. That is, when the first detector 9a outputs the front surface closing signal or the second detector 9b outputs the side surface holding signal, the holding mechanism 10 is operated as shown in FIG. The front frame 3a is provided with a housing member 11 having a first housing hole 11a for housing the holding member 10b when the front closing plate 2 is in the front closed state. By forming the first accommodation hole 11 a, the front closing plate 2 can be held in the front closed state (see FIG. 4) by the holding member 10 b of the holding mechanism 10.

  As shown in FIG. 9, the side surface frames 3c, 3e are provided with a housing member 12 having a second housing hole 12a for housing the holding member 10b when the front closing plate 2 is in the side surface holding state. By forming the second accommodation hole 12 a, the front closing plate 2 can be held in the side holding state (the front open state) (see FIG. 5) by the holding member 10 b of the holding mechanism 10.

<Variations of first and second opening and closing support mechanisms 5, 6>
Next, variations of the configurations of the first and second opening and closing support mechanisms 5 and 6 described above will be described.

  Since the configuration of the second opening / closing support mechanism 6 shown in FIG. 6 is the same as the configuration of the first opening / closing support mechanism 5, the configuration of the first opening / closing support mechanism 5 will be described and the configuration of the second opening / closing support mechanism 6 Description of is omitted.

FIG. 13A is a top view of the front closing state of the front closing plate 2 in the first opening and closing support mechanism 5A of the first embodiment. FIG. 13B is a top view of the side surface holding state (front open state) of the front closing plate 2 according to the first embodiment.
As shown in FIG. 13A, the first open / close support mechanism 5A of the first embodiment is fixed to the first flat plate 5a1 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2 The angle formed between the second flat plate 5b1 and the second flat plate 5b1 is 0 degree.

  And as shown to FIG. 13B, in the side holding state of the front closing plate 2 (the open state of the front closing plate 2), it is fixed to the 1st flat plate 5a1 fixed to the front frame 3a, and the front closing plate 2. The angle formed by the second flat plate 5b1 is 90 degrees.

FIG. 14A is a top view of the front closing state of the front closing plate 2 in the first opening and closing support mechanism 5B of the second embodiment. FIG. 14B is a top view of the side surface holding state (front open state) of the front surface closing plate 2 of the second embodiment.
The first open / close support mechanism 5B of the second embodiment is fixed to the first flat plate 5a2 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2 as shown in FIG. 14A. The angle formed between the second flat plate 5b2 and the second flat plate 5b2 is 90 degrees.

  Then, as shown in FIG. 14B, in the side holding state of the front closing plate 2 (the opening state of the front closing plate 2), the first flat plate 5a2 fixed to the front frame 3a and the front closing plate 2 are fixed. The angle formed by the second flat plate 5b2 is 0 degrees.

FIG. 15A is a top view of a front closing state of the front closing plate 2 in the first opening and closing support mechanism 5C of the third embodiment. FIG. 15B is a top view of the side surface holding state (front open state) of the front surface closing plate 2 of the third embodiment.
As shown in FIG. 15A, the first open / close support mechanism 5C of the third embodiment is fixed to the first flat plate 5a3 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2 The angle formed between the second flat plate 5b3 and the second flat plate 5b3 is 180 degrees.

  Then, as shown in FIG. 15B, in the side holding state of the front closing plate 2 (the opening state of the front closing plate 2), the first flat plate 5a3 fixed to the front frame 3a and the front closing plate 2 are fixed. The angle formed by the second flat plate 5b3 is 90 degrees.

FIG. 16A is a top view of the front closing state of the front closing plate 2 in the first opening and closing support mechanism 5D of the fourth embodiment. FIG. 16B is a top view of the side surface holding state (front open state) of the front closing plate 2 of the fourth embodiment.
As shown in FIG. 16A, the first open / close support mechanism 5D of the fourth embodiment is fixed to the first flat plate 5a4 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2. The angle formed between the second flat plate 5b4 and the second flat plate 5b4 is 90 degrees.

  Then, as shown in FIG. 16B, in the side holding state of the front closing plate 2 (the opening state of the front closing plate 2), the first flat plate 5a4 fixed to the front frame 3a and the front closing plate 2 are fixed. The angle formed by the second flat plate 5b4 is 180 degrees.

FIG. 17A is a top view of the front closing state of the front closing plate 2 in the first opening and closing support mechanism 5E of the fifth embodiment. FIG. 17B is a top view of the side surface holding state (front open state) of the front surface closing plate 2 of the fifth embodiment.
As shown in FIG. 17A, the first open / close support mechanism 5E of the fifth embodiment is fixed to the first flat plate 5a5 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2. The angle formed between the second flat plate 5b5 and the second flat plate 5b5 is 90 degrees.

  Then, as shown in FIG. 17B, in the side holding state of the front closing plate 2 (the open state of the front closing plate 2), the first flat plate 5a5 fixed to the front frame 3a and the front closing plate 2 are fixed. The angle formed by the second flat plate 5b5 is 180 degrees.

FIG. 18A is a top view of the front closing state of the front closing plate 2 in the first opening and closing support mechanism 5F of the sixth embodiment. FIG. 18B is a top view of the side surface holding state (front open state) of the front surface closing plate 2 of the sixth embodiment.
The first open / close support mechanism 5F of the sixth embodiment is fixed to the first flat plate 5a6 fixed to the front frame 3a and the front close plate 2 in the front close state of the front close plate 2 as shown in FIG. 18A. The angle formed between the second flat plate 5b6 and the second flat plate 5b6 is 180 degrees.

  Then, as shown in FIG. 18B, in the side holding state of the front closing plate 2 (the open state of the front closing plate 2), the first flat plate 5a6 fixed to the front frame 3a and the front closing plate 2 are fixed. The angle formed by the second flat plate 5b6 is 90 degrees.

  From the above, it can be seen that the first flat plate 5a, 6a and the second flat plate 5b, 6b are a combination of 0 degree opening and 90 degree opening, or a combination of 90 degree opening and 180 degree opening The front closed state and the side holding state (front open state) of the front closing plate 2 can be configured by either.

<Mounting Configuration of Closing Device Unit 1 to Housing t1>
Next, the attachment structure to the housing t1 of the closing device unit 1 is demonstrated.

  FIG. 19A is an enlarged top view of a joint between a closing unit 1 and a housing t1 according to a seventh embodiment. 19B is a cross-sectional view along line III-III of FIG. 19A of the seventh embodiment.

  As shown in FIG. 19A, a sealing material 13 is provided between the front frame 3a and the side frame 3c and the housing t2.

As shown in FIGS. 19A and 19B, the connecting portion 14 between the closing device unit 1 and the housing t1 is the side edge of the front frame 3a and the side portions of the side frames 3b, 3c, 3d, 3e.
As described above, when the gap between the closing device unit 1 and the housing t1 is narrow, the sealing material 13 or the like is applied to the gap between the front frame 3a or the side frames 3b1, 3b2, 3c, 3d, 3e and the housing t1. , Close the side of the closing device unit 1.

  FIG. 20A is an enlarged top view of a joint portion between a closing device unit 1 and a housing t1 according to an eighth embodiment. FIG. 20B is a cross-sectional view along line IV-IV of FIG. 20 of the eighth embodiment.

As shown in FIG. 20A, when the gap between the closing device unit 1 and the housing t1 is wide, a panel 15 such as an iron plate is provided on the side of the front frame 3a and the side of the side frame 3c.
When the gap between the closing device unit 1 and the housing t1 is wide, first, the side surface of the closing device unit 1 is closed by the panel 15. Thereafter, as shown in FIGS. 20A and 20B, the connecting portion 16 between the panel 15 and the housing t1 is closed with the sealing material 13 or the like.

<Installation of closing device unit 1 to opening t2 of housing t1>
As shown in FIG. 2 and FIG. 3, when the above-mentioned closing device unit 1 is installed at the inner opening of the reactor building T, the following is performed.

  Depending on the area and shape of the opening t2 of the housing t1 shown in FIG. 1, as shown in FIG. 2, the closing device unit 1 is adjacent to another closing device unit 1 adjacent in the horizontal and / or vertical direction A plurality of pieces are connected so that no void is generated in Then, all the closing device units 1 are arranged in a two-dimensional grid. It is desirable that the front closing plates 2 of the closing device unit 1 be arranged in a two-dimensional grid so as to form the same plane.

Thus, the closing device unit 1 can be disposed in accordance with the area and the shape of the opening t2.
When the closing device unit 1 is arranged in a grid, the closing area when the front closing plate 2 is closed (the area of the front closing plate 2 and the contact portion 2o between the front closing plate 2 and the front frame 3a (FIG. 8) 12) and the number of front panels 2 close the predetermined range of the area of the opening t2 (see FIG. 2) of the housing t1, the front closing of the closing device unit 1 The area of the plate 2 and the number of connected plates are calculated.

  When the closing device unit 1 is arranged in a two-dimensional grid, if there is no closing device unit 1 adjacent to the right side and / or the left side, the right side and / or the left side of the closing unit 1 It fixes and arranges to the frame t1 which comprises a building.

  As shown in FIGS. 2 and 3, the closing device unit 1 installed is electrically connected to a controller (not shown) that is the control unit. The worker can open and close the front closing plate 2 of the closing device unit 1 by operating an operation switch (not shown) of the controller.

<Operation of closing device unit 1 attached to opening t2 of housing t1 in reactor building T>
As shown in FIG. 3, a series of flows from attaching the closing device unit 1 to the opening t2 of the reactor building T and moving the closing device unit 1 after the blowout panel t3 is detached will be described.

The pressure inside the reactor building T rises due to an accident or the like, and when it exceeds a certain value, the blowout panel t3 is automatically opened. As a result, the pressure inside the reactor building T becomes equal to the atmospheric pressure.
On the other hand, if the blowout panel t3 is not automatically opened for some reason, a manual forced open is performed. The success or failure of the opening of the blowout panel t3 is confirmed by visual confirmation of the worker or measurement of pressure change detected by a pressure sensor (not shown) installed inside the reactor building T. After opening the blowout panel t3, if it is determined that closing of the opening t2 is necessary due to convergence of the accident or the like, the worker performs closing operation of the closing device unit 1 by the operation switch of the controller, and the front closing plate 2 Close

  That is, when the blowout panel t3 is released, all the first and second open / close support mechanisms 5, 6 are operated, and all the front closing plates 2 are in the front closed state. Thereby, the predetermined range of the opening t2 is closed. The predetermined range means that one or more of the front frame 3a in the area of the opening t2 blocks the range of the area of the opening t2 beforehand, so the area of the one or more front frames 3a is determined from the area of the opening t2. Means the area minus In the front closed state, from the area of the front closing plate 2, the closing area which is the sum of the areas excluding the contact portion 2o (see FIGS. 8 and 12) of the front closing plate 2 with the front frame 3a is the opening t2. It occupies a predetermined range of the opening area. Therefore, by opening and closing the front closing plate 2, the area of the predetermined range of the opening t2 is opened and closed.

  According to the above configuration, when the blowout panel t3 is released at the opening t2 of the reactor building T, the front closing plate 2 of the closing unit 1 is closed to close the opening t2 of the housing t1, and the reactor building It is possible to separate the inside and the outside of T. Therefore, it is possible to suppress the leakage of the substance inside the reactor building T to the outside world.

Other Embodiments
1. Although the case where the holding mechanism 10 was provided in the outer surface of the reactor building T was demonstrated in the said embodiment, you may provide in the inner surface of the reactor building T of the front closing plate 2. FIG. If the holding mechanism 10 is provided inside, the weather resistance of the holding mechanism 10 is improved. Alternatively, the holding mechanism 10 may be provided inside the thickness of the front closing plate 2. If the holding mechanism 10 is provided inside the front closing plate 2, the holding mechanism 10 is isolated from the outside world, the operating environment becomes good, and the failure can be suppressed.

2. In the embodiment, as shown in FIG. 12, the case where the protrusion s1 is provided on the front surface 2a of the front closing plate 2 and the rubber strip sealing material s2 is provided on the back surface 3a1 side of the front frame 3a is shown. As shown in FIG. 21, a rubber strip sealing material s2 may be provided on the front surface 2a of the front closing plate 2, and a projection s1 may be provided on the back surface 3a1 side of the front frame 3a. FIG. 21 is an enlarged top view of FIG. 8 of the first modification.

3. In the above embodiment, the opening and closing rotational drive device is configured by the first opening and closing rotational drive device 7 and the second opening and closing rotational drive device 8, but the first opening and closing support mechanism is one opening and closing rotational drive device. The second flat plate 5b of 5 and the second flat plate 6b of the second open / close support mechanism 6 may be driven to open and close.

4. In the embodiment, the rotation shaft 5c of the first opening / closing support mechanism 5 is driven by the first opening / closing rotation drive unit 7, and the rotation shaft of the second opening / closing support mechanism 6 is driven by the second opening / closing rotation drive unit 8. Although an example of driving 6c has been described, it may be configured as follows instead.

FIG. 22 is a perspective view of the first opening / closing rotary drive 7A and the first opening / closing support mechanism 5A of the second modification.
As shown in FIG. 22, the first flat plate 5a1 and the second flat plate 5b1 of the first open / close support mechanism 5A are configured to be rotatable about the rotation shaft 5c1.
In the first opening / closing rotary drive 7A, the gear 7b1 is fixed to the shaft of the motor 7a1, and the gear 7b1 and the gear 7c1 are in mesh. The drive shaft 5c2 is fixed to the gear 7c1.

  Then, the second flat plate 5b1 is fixed to the drive shaft 5c2 of the first opening / closing rotary drive 7A. With this configuration, the second flat plate 5b1 may be directly driven by the first opening / closing rotary drive 7A. The second opening / closing support mechanism 6 can also be configured in the same manner as described above.

5. In the embodiment, the holding mechanism 10 is provided on the front closing plate 2, the first accommodation hole 11a is provided in the front frame 3a, and the second accommodation hole 12a is provided in the side frames 3c and 3e. Instead of this, an accommodation hole may be provided in the front closing plate 2 and a holding mechanism may be provided in each of the front frame 3a and the side frames 3c and 3e.

6. The embodiments, examples, and the like are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Moreover, it is possible to add, delete, and replace another configuration with respect to a part of the configuration of the embodiment.

7. Furthermore, the present invention is capable of various modifications and concrete forms within the scope described in the claims, and is not limited to the described embodiments.

1 Closing device unit (closing device)
2 front closing plate 2o contact portion 3 three-dimensional frame structure 3a front frame 3a1 opening (open surface)
3a3 contact portion 3b, 3c, 3d, 3e side frame 4b bottom closing panel 4t top closing panel 5 first opening / closing support mechanism 5a, 6a first flat plate 5b, 6b second flat plate 5c, 6c rotation shaft 6th Second opening / closing support mechanism 6c Rotary shaft 7 First opening / closing rotary drive (opening / closing rotary drive)
8 Second rotary drive for opening and closing (rotational drive for opening and closing)
9a first detector 9b second detector 10 holding mechanism 10a holding member drive device 10b holding member 11a first housing hole 12a second housing hole s2 strip seal material T reactor building (building)
t2 opening t3 blow out panel (BOP)

Claims (13)

A closing device for closing the opening of the building,
A rectangular frame-shaped front frame having an open predetermined area;
A three-dimensional frame structure comprising: a square side frame joined so as to constitute a side surface extending from the vicinity of at least two opposing upper and lower vertices of the front frame;
It has one rotation axis, and a first flat plate and a second flat plate having a predetermined area that is pivotally supported by the rotation axis and freely openable and closable in the opposite direction centering on the rotation axis. ,
The first flat plate is fixedly disposed at each position on the direction side of the top surface and the direction side of the bottom surface opposite to the top side from the middle position of the same one side of the front frame to which the side surface frame is joined A first open / close support mechanism and a second open / close support mechanism;
The first and second open / close support mechanisms are fixedly disposed on the second flat plates, and the first and second open plates of the first and second open / close support mechanisms are opened. Accordingly, a side holding state in which all or a part of the open surface of the right side surface or the left side surface is closed by abutting against the right or left side frame inside the three-dimensional frame structure, or the three-dimensional frame structure A front closing plate having a predetermined thickness, in which a closed state is selected which is in contact with the front frame inside to close the entire front open face;
A holding mechanism for holding the position of the front closing plate so as not to rotate in the side holding state and the front closing state;
A closing device comprising: In the closing device according to claim 1,
In the front closed state, the closed area which is the sum of the area of the front frame excluding the area of the front closed plate and the contact portion with the front closed plate is a predetermined range of the open area which is the area of the opening. A closing device characterized in that In the closing device according to claim 1,
A closing device comprising: a top surface closing panel configured to close the entire top surface; and a bottom surface closing panel configured to close the entire bottom surface. In the closing device according to claim 1,
The rotary shaft or the second flat plate of the first and second opening and closing support mechanisms are connected to the opening and closing rotary drive directly or through a driving force transmission mechanism, and the operation of the opening and closing rotary drive is performed. A closing device driven in synchronization with opening and closing and driven by the second flat plate. In the closing device according to claim 1,
The holding mechanism has a holding member driving device,
The holding member driving device drives a holding member connected to the holding member driving device when the front surface closing plate is in the front surface closing state and the side surface holding state.
The front frame is provided with a first receiving hole for receiving the holding member in the front closed state of the front closing plate.
The side frame includes a second accommodation hole in which the front closing plate accommodates the holding member in the side surface holding state. In the closing device according to claim 5,
The holding mechanism is fixed to any one of the thickness inside of the front closing plate, the inner surface of the building of the front closing plate, or the outer surface of the building of the front closing plate. Closing device. In the closing device according to claim 5,
A first detector that outputs a front surface closing signal when in the front surface closed state; and a second detector that outputs a side surface holding signal when the side surface is held,
The holding mechanism is operated when the first detector outputs the front surface closing signal or when the second detector outputs the side surface holding signal. Closing device. In the closing device according to claim 1,
In order to increase the air tightness in the front closed state,
A closing device characterized by sticking a strip shaped sealing material of a predetermined width which goes round the contact part without break at the contact part of the front frame with the front close plate. In the closing device according to claim 1,
According to the area and the shape of the opening, a plurality of the closing devices are connected so that a gap does not occur in the adjacent portions to the closing devices adjacent in the horizontal direction and / or the vertical direction according to the area and shape of the opening. A closure device characterized in that the front closure plates of all the closure devices are arranged in a two-dimensional grid so as to form the same plane. In the closing device according to claim 9,
When the closing device is disposed in the two-dimensional grid, the front closing plate of the closing device is such that the product of the closing area and the number of front closing plates closes a predetermined range of the area of the opening. A closure device characterized by calculating the area and the number of connected units. In the closing device according to claim 9,
When the closing device is disposed in the two-dimensional grid, if there is no closing device adjacent to the right side and / or the left side, the right side and / or the left side of the closing device. A closing device characterized in that the surface is fixedly disposed on a frame that constitutes the building. In the closing device according to claim 1,
The first and second opening and closing support mechanisms are
The opening which is the angle formed by the first flat plate and the second flat plate is either a combination of 0 degree opening and 90 degree opening, or a combination of 90 degree opening and 180 degree opening The first flat plate is fixed to the front frame so as to constitute the front closed state and the side holding state of the front closed plate. In the closing device according to claim 1,
The building is a nuclear facility,
The opening is an opening that is generated when the BOP of the nuclear facility is released,
In the closing device, the front frame is provided with a predetermined gap from the installation site of the BOP, and the front frame is disposed facing the inside of the nuclear related facility inside the nuclear related facility, or
In the closing device, the front frame is provided with a predetermined gap from the installation place of the BOP, and the front frame is disposed with the BOP facing toward the inside of the nuclear related facility,
Choose one of the
When the BOP is released, all the first and second open / close support mechanisms operate to bring all the front closing plates into the front closing state to close the predetermined range of the opening. A closing device characterized by

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