JP2002341078A - Air lock device - Google Patents

Abstract

(57) [Problem] To provide an airlock device through which a carriage for carrying in and out of equipment can pass. A fixed passage body (3) extending substantially horizontally in a longitudinal direction of a body (12) from a lower edge of an opening of a bulkhead (31) in a body (12).
5 and a passage support 36 located below the open / close range of the outer door 34 is permanently provided, and the doors 33 and 34 are opened.
A temporary passage 37 extending substantially horizontally from the lower edge of the opening of the bulkhead 32 to the upper surface of the fixed passage 35 is disposed, and an inner temporary passage 38 extending from the lower edge of the opening of the bulkhead 31 to the floor 27.
By disposing an outer temporary passage body 39 extending from the lower edge of the opening of the bulkhead 32 to the floor surface 28, the passage surfaces 42, 4 extending from the outside of the containment body 2 to the drywell 7.
0, 41 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air lock device.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a concrete reactor containment vessel. This reactor containment vessel has a hollow-structured containment body 2 erected on a foundation 1 and an inner side of the containment vessel body 2. A pedestal 4 erected on the foundation 1 so as to be positioned and supporting the reactor pressure vessel 3 at an upper portion; and a substantially horizontal direction from a vertically intermediate portion of the inner peripheral surface of the containment vessel main body 2 toward the outer peripheral surface of the pedestal 4. An extended diaphragm floor 5 and a top head 6 for closing the upper end opening of the containment vessel body 2 are provided, and the containment vessel body 2, the pedestal 4, and the diaphragm floor 5 are integrally formed by a reinforced concrete structure.

[0003] In a dry well 7 surrounded by the upper surface of the diaphragm floor 5, the inner peripheral surface of the containment vessel main body 2, and the lower surface of the top head 6, piping 8 and equipment connected to the reactor pressure vessel 3 are arranged. Top, containment vessel body 2
The suppression chamber 9 surrounded by the inner peripheral surface, the pedestal 4 outer peripheral surface, and the lower surface of the diaphragm floor 5 includes:
Water 10 is stored.

The side wall of the containment vessel body 2 has an air lock device 11 for an operator to move between the outside of the containment vessel body 2 and the dry well 7 at the time of a periodic inspection, and a device for carrying the equipment into and out of the dry well 7. And a hatch 22 for performing the operation.

FIG. 4 shows an example of the air lock device 11.
(See FIG. 3) A cylindrical body 12 penetrating the side wall portion,
A bulkhead 13 having an opening in the center thereof through which an operator can pass, and being inscribed and fixed to a portion of the body 12 near the dry well 7 (see FIG. 3); and a body 12 having the same shape as the bulkhead 13. And a bulkhead 14 fixedly inscribed and fixed to the outer side of the storage container main body 2, and arranged on the drywell 7 side of the bulkheads 13, 14, and one side edge of the suspension shaft 15, 1.
6 are provided with doors 17 and 18 pivotally supported by the bulkheads 13 and 14 via a door 6, and a door opening / closing mechanism for operating the doors 17 and 18.

A door opening / closing mechanism is attached to the bulkheads 13 and 14 and can be operated from the outside of the body 12 by handles 19 and 2.
0, and a handle 21 operable in the body 12,
Each handle 19, 2 is provided by mechanical means such as gears and shafts.
The rotation of 0, 21 is transmitted to the doors 17, 18, and the door 1
7, 18 are opened and closed.

FIG. 5 shows an example of the hatch 22. The hatch 22 penetrates the side wall portion of the storage container main body 2 and has a body portion 23 having an inner diameter through which various devices can pass.
And an end member 24 coaxially fixed to the outer end of the storage container body 2 of the body 23 and having a doubled thickness, and bolted to the end member 24 to secure the storage container body 2 of the body 23 And a head plate 25 for closing the outer end.

When opening the hatch 22, the end plate 25
The load of the mirror plate 25 is supported by the hoist 26 installed above, and the mirror plate 25
Is released, and the end plate 25 is moved laterally from the position facing the end member 24 by the traversing operation of the hoist 26.

Opening and closing the hatch 22 involves moving the heavy end plate 25 and checking the airtightness between the end plate 24 and the end plate 24, so that the dry well 7 is relatively small. It is not advisable to open and close the hatch 22 when only loading and unloading equipment.

[0010] Therefore, it has been studied to carry the equipment in and out of the dry well 7 through the air lock device 11.

[0011]

However, the lower edges of the openings of the bulkheads 13 and 14 are separated from the floor surface 27 on the drywell 7 side, the inner bottom surface of the body 12 and the floor surface 28 outside the containment body 2. Is high and a step is formed, so that a carriage used for carrying in and out of the equipment cannot pass through the air lock device 11.

The present invention has been made in view of the above circumstances, and has as its object to provide an airlock device through which a carriage for carrying in and out of equipment can pass.

[0013]

In order to achieve the above object, in the air lock device according to the first aspect of the present invention, one end communicates with the dry well inside the storage container main body and the other end communicates with the storage container main body. A body communicating with the outside, an inner bulkhead having an opening at the center and inscribed and fixed to one end of the body, and an inner bulkhead having an opening at the center and inscribed at the other end of the body. An outer bulkhead fixed to the bulkhead, an inner door body and an outer door body arranged on the drywell side for each bulkhead and having one side edge pivotally supported by the bulkhead; A fixed passage extending substantially horizontally from the lower edge of the opening of the head to a middle portion in the longitudinal direction of the body, a passage support permanently provided in the body and having an upper surface located below the opening and closing range of the outer door body, and the passage support When mounted on top, the top surface And a temporary passage body leading to a substantially horizontally from the opening lower edge of de top surface of the fixed passage body.

The airlock device according to the second aspect of the present invention includes an inner temporary passage body whose upper surface is continuous from the lower edge of the opening of the inner bulkhead to the floor surface of the drywell.

Further, the airlock device according to the third aspect of the present invention is provided with an outer temporary passage body whose upper surface is continuous from the lower edge of the opening of the outer bulkhead to the floor surface outside the storage container body.

In any of the airlock devices according to the first to third aspects of the present invention, the temporary passage body is placed on the passage support in a state where both the outer door body and the inner door body are opened. By mounting, the upper surface of both the temporary passage body and the fixed passage body forms a passage surface which is connected to the lower edge of both bulkheads in a substantially horizontal manner, so that the carriage for carrying in / out the equipment can pass through the inside of the body. .

Further, in the air lock device according to the second aspect of the present invention, the inner temporary passage body is disposed on the floor of the dry well, and the inner temporary passage body is disposed on the upper surface of the fixed passage body in the trunk from the floor of the dry well. A continuous passage surface is formed to facilitate movement of the bogie between the trunk and the dry well.

Further, in the airlock device according to the third aspect of the present invention, the outer temporary passage body is arranged on the floor outside the main body of the containment vessel, and the inside of the trunk portion is arranged from the floor outside the main body of the containment vessel. A passage surface connected to the upper surface of the temporary passage body is formed to facilitate the movement of the bogie between the inside of the trunk and the outside of the containment body.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of an airlock device according to the present invention. In the drawings, the same reference numerals as in FIG. 4 denote the same components.

The air lock device 30 has a cylindrical body 12 penetrating the side wall portion of the storage container main body 2 (see FIG. 3).
And an opening through which a worker can pass in the center and the body 1
2, an inner bulkhead 31 inscribed and fixed to a portion closer to the dry well 7 (see FIG. 3);
An outer bulkhead 32 having the same shape as that of the outer bulkhead 32 and inscribed and fixed to the outer portion of the storage container main body 2 of the body 12, and is disposed on the dry well 7 side of each of the bulkheads 31, 32, and one side edge is suspended. The respective bulkheads 3 via shafts 15 and 16
Inner door body 33 pivotally supported by 1 and 32, and outer door body 34
A door opening / closing mechanism for operating each of the doors 33 and 34; a fixed passage 35 and a passage support 36 permanently provided in the body 12; And an outer temporary passage body 39.

The upper surface of the fixed passage body 35 extends substantially horizontally in the longitudinal direction of the body portion 12 from the lower edge of the opening of the inner bulkhead 31 and reaches the vicinity of the open / close range of the outer door body 34.

The upper surface of the passage support 36 is located below the opening and closing range of the outer door 34 so as not to contact the lower end of the outer door 34.

When the temporary passage member 37 is mounted on the passage support member 36, the upper surface thereof extends substantially horizontally from the lower edge of the opening of the outer bulkhead 32 to the upper surface of the fixed passage member 35.

When the inner temporary passage body 38 is disposed in the dry well 7, the upper surface of the inner temporary passage body 38 extends from the lower edge of the opening of the inner bulkhead 31 to the floor surface 27.
When disposed outside the storage container main body 2, the upper surface is connected to the floor surface 28 from the lower edge of the opening of the outer bulkhead 32.

In the airlock device 30 shown in FIGS. 1 and 2, a temporary passage 37 is mounted on a passage support 36 with both the outer door 34 and the inner door 33 open. The upper surfaces of the bulkheads 31 and 32 form a passage surface 40 that extends substantially horizontally at the lower edges of the openings of the bulkheads 31 and 32 so that a carriage for loading and unloading equipment can pass through the inside of the body 12.

Further, the inner temporary passage body 3 is provided in the dry well 7.
8 is disposed to form a passage surface 41 that extends from the floor surface 27 to the upper surface of the fixed passage body 35, thereby facilitating the movement of the bogie between the inside of the trunk portion 12 and the dry well 7.

Further, an outer temporary passage body 39 is arranged outside the containment vessel main body 2, and the temporary passage body 37 is disposed from the floor surface 28.
The passage surface 42 is formed so as to be continuous with the upper surface of the container, thereby facilitating the movement of the bogie between the inside of the body portion 12 and the outside of the storage container body 2.

Further, in the normal state, the temporary passage body 37,
By removing the inner temporary passage body 38 and the outer temporary passage body 39, the outer door body 34 and the inner door body 33 can be closed.

It should be noted that the airlock device of the present invention is not limited to the above-described embodiment, but may be modified without departing from the scope of the present invention.

[0031]

As described above, according to the airlock device of the present invention, the following various excellent effects can be obtained.

(1) In any of the airlock devices according to the first to third aspects of the present invention, both the outer door body and the inner door body are temporarily opened on the passage support with the both doors opened. Since the passage body is mounted, and the upper surfaces of both the temporary passage body and the fixed passage body form a substantially horizontal passage surface at the lower edge of both bulkheads, the carriage for carrying in and out the equipment passes through the trunk. it can.

(2) In the airlock device according to the second aspect of the present invention, the inner temporary passage body is disposed on the floor of the dry well, and the upper surface of the fixed passage body in the trunk from the floor of the dry well. Is formed, so that the bogie can easily move between the inside of the trunk and the inside of the dry well.

(3) In the airlock device according to the third aspect of the present invention, the outer temporary passage body is disposed on the floor surface outside the main body of the storage container, and the inside of the trunk portion is formed from the floor surface outside the main body of the storage container. Since the passage surface connected to the upper surface of the temporary passage body is formed, the carriage can be easily moved between the inside of the trunk and the outside of the containment body.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of an example of an embodiment of an airlock device of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a conceptual diagram of an example of a reactor containment vessel.

FIG. 4 is a cross-sectional view of an example of an air lock device related to FIG.

FIG. 5 is a sectional view of an example of a hatch related to FIG. 3;

[Explanation of symbols]

 2 Containment container main body 7 Dry well 12 Body 31 Inner bulkhead 32 Outer bulkhead 33 Inner door 34 Outer door 35 Fixed passage 36 Passage support 37 Temporary passage 38 Inner temporary passage 39 Outer temporary passage 39

Claims (3)

[Claims] 1. A body having one end communicating with a dry well inside a main body of the storage container and the other end communicating with the outside of the main body of the storage container, an opening at a central portion, and inscribed at one end of the main body. An inner bulkhead fixed and fixed, an outer bulkhead having an opening at the center and inscribed and fixed to the other end of the body, and a bulkhead arranged on the drywell side and having one side edge. An inner door body and an outer door body pivotally supported by the bulkhead; a fixed passage body permanently installed in the body and having an upper surface extending substantially horizontally from a lower edge of the opening of the inner bulkhead to a middle part in the body longitudinal direction; A passage support that is permanently installed and whose upper surface is located below the open / close range of the outer door body, and that when mounted on the passage support, the upper surface is substantially horizontal from the lower edge of the opening of the outer bulkhead to the upper surface of the fixed passage body. And a continuous temporary passage body. Air lock device. 2. The airlock device according to claim 1, further comprising an inner temporary passage body whose upper surface is continuous from the lower edge of the opening of the inner bulkhead to the floor surface of the drywell. 3. The airlock device according to claim 1, further comprising an outer temporary passage body whose upper surface is continuous from a lower edge of the opening of the outer bulkhead to a floor surface outside the storage container body.