JPH10332865A - Reactor containment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify structure, reduce production cost and improve mechanical strength by providing liner of concrete-made side wall and liner anchor in the extended state over the position of the liner of tope slab. SOLUTION: The liner 2C of side wall 2A is arranged in the state that the upper part is extended over the position of the liner 2C of top slab 2B, and has a role of a supporting cylinder 11 supporting outer end of a liner anchor 2D of the top slab 2B in the state of butting the inner surface and by forming a welding part 12 on the inner surface of the cylinder 11, both are made in one body. Both liner anchors 2D of the side wall 2A and the top slab 2B are lined in one radial direction so as to agree the position circumferentially and mechanically connected mutually in the state that the liner 2C are put in. By this, in constructing the top slab 2B, the liner 2C of the top slab 2B and the liner anchor 2D can be directly fixed to the side wall 2A and the liner 2C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a containment vessel, and more particularly to a technique for connecting a liner and a liner anchor between a side wall and a top slab.

[0002]

2. Description of the Related Art FIG.
No. 98, Technical Example 2: Japanese Utility Model Application Laid-Open No. 2-021599, and Technical Example 3: A structural example of a concrete reactor containment vessel X described in Japanese Patent Application Laid-Open No. 6-294886.

[0003] The containment vessel X is housed inside the reactor building 1 and has an airtight structure in which a steel liner 2C is lined on the inner surface of a concrete side wall 2A and a top slab 2B. The reactor pressure vessel 3, the reactor pedestal 4, and the reactor shield wall 5 are housed inside the reactor containment vessel X, respectively, and the reactor pedestal 4 and the diaphragm floor 6
The dry well 7 and the suppression chamber 8 are partitioned.

[0004] In constructing such a reactor containment vessel X, concrete is cast in a state where the side wall 2A is divided into a plurality of parts, and the side wall 2A is erected together with the liner 2C. Top slab 2 inside the upper end
B must be formed while supporting its weight.

At this time, since the liner 2C is disposed on the lowermost surface of the top slab 2B, as shown in FIGS. 4 and 5, a plurality of liner anchors 2D and flats are provided on the upper surface of the liner 2C. It is necessary to arrange the bars 2E vertically and horizontally and integrally, and bury the liner anchor 2D and the flat bar 2E in the concrete of the top slab 2B to secure the overall strength.

On the other hand, since it is necessary to connect between the side wall 2A and the top slab 2B so as to secure sufficient mechanical strength, as shown in FIG. 5, the liner anchor 2D of the side wall 2A and the top slab 2B are connected. It is necessary to dispose a thick reinforcing plate 2F at a corner portion between the liner anchor 2D and the shear plate 2G so as to extend the liner anchor 2D of the side wall 2A above the reinforcing plate 2F. In order to compensate for the non-uniformity of the strength due to the change in the circumferential pitch of the liner anchor 2D of the side wall 2A depending on the circumferential positions a to c of the top slab 2B as shown in FIG. ing.

[0007]

However, the reinforcing plate 2F must be attached to the liner 2C of the side wall 2A in the process of constructing the top slab 2B, which complicates the structure and ensures accuracy. Labor is likely to be enormous.

The present invention has been made in view of such circumstances, and aims to achieve the following objects. Simplify the structure. Reduce production costs. To shorten the installation process. Improve mechanical strength.

[0009]

A concrete steel side wall and a top slab are provided with a steel liner lined therein, and a suppression chamber divided by the side wall, a reactor pedestal, and a diaphragm floor is provided. A reactor containment vessel is used in which the liner and the liner anchor on the side wall made of concrete extend above the position of the liner on the top slab. The liner anchors of the side wall and the top slab are connected to each other with their circumferential positions being set to coincide. The liner anchor portion of the top slab is arranged radially. A flat bar whose height is adjusted to the height of the liner anchor of the top slab is integrally provided on the upper portion of the liner of the side wall in an outward state.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a containment vessel according to the present invention will be described below with reference to FIGS.

In the technique shown in FIGS. 1 and 2, a concrete side wall 2A and a top slab 2B are formed on the concrete side wall 2A according to FIG.
A reactor containment vessel X in which a steel liner 2C is arranged in a lining state and a suppression chamber 8 partitioned by a side wall 2A, a reactor pedestal 4, and a diaphragm floor 6 is provided. Technology is added.

The liner 2C of the side wall 2A is disposed with its upper part extended above the position of the liner 2C of the top slab 2B, and the outer end of the liner anchor 2D of the top slab 2B is formed on the inner peripheral surface. A support cylindrical portion 11 is provided for supporting the support cylindrical portion 11 in abutting condition, and a welded portion 12 is formed on an inner surface of the support cylindrical portion 11 as shown in FIG. As a result, the support cylinder 1
The portion 1 is set to slightly protrude from the upper surface of the liner anchor 2D of the top slab 2B.

As shown in FIG. 2, both liner anchors 2D of the side wall 2A and the top slab 2B are arranged on one radial line so as to be aligned in the circumferential direction, with the liner 2C interposed therebetween. Are mechanically connected to each other. Therefore, the portion of the liner anchor 2D of the top slab 2B is arranged radially as shown in FIG.

At the upper end of the liner 2C and the liner anchor 2D on the side wall 2A, an annular flat bar 13 is provided.
It is provided integrally with the outer peripheral surface of the support cylindrical portion 11 by a welded portion 12. The flat bar 13 is used for the top slab 2.
The B liner anchor 2D is arranged so as to face outward with the same height.

With the reactor containment vessel X having such a configuration, when constructing the top slab 2B, the liner 2C or the liner anchor 2D of the top slab 2B is directly connected to the liner 2C of the side wall 2A. The construction work process of the top slab 2B can be shortened.

Further, as shown in FIGS. 1 and 2, both the liner anchors 2 are provided on the side wall 2A and the top slab 2B.
Since the portion D has a structure that is continuous in the radial direction, and is also aligned in the vertical and circumferential directions,
In addition to simplifying the structure, mechanical strength can be ensured.

[0017]

According to the containment vessel according to the present invention,
The following effects are obtained. (1) By arranging the liner and the liner anchor of the concrete side wall to extend above the position of the liner of the top slab, it is possible to simplify the connection structure of both the liner anchor of the side wall and the top slab. it can. (2) By setting the liner anchors of the side wall and the top slab so that their circumferential positions are aligned, it is possible to improve construction workability and reduce labor. (3) As described above, it is possible to eliminate the occurrence of a portion having an uneven strength in the liner anchor and to improve the mechanical strength of the connecting portion between the side wall and the top slab. (4) By arranging the liner anchors of the top slab radially to enhance the connectivity, the manufacturing cost can be reduced and the installation process can be shortened.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a main part showing an embodiment of a containment vessel according to the present invention.

FIG. 2 is a plan sectional view of a main part showing one embodiment of a reactor containment vessel according to the present invention.

FIG. 3 is a front sectional view showing an example of a conventional structure of a concrete reactor containment vessel.

FIG. 4 is a plan sectional view of a liner anchor, a flat bar, and the like in the top slab shown in FIG. 3;

5 is a front sectional view of a liner anchor, a flat bar, and the like in the top slab shown in FIG. 3;

[Explanation of symbols]

 X Reactor containment vessel 2A Side wall 2B Top slab 2C Liner 2D Liner anchor 2E Flat bar 4 Reactor pedestal 6 Diaphragm floor 8 Suppression chamber 11 Support cylindrical part 12 Welded part 13 Flat bar

Claims (4)

[Claims] 1. A steel liner (2C) is lined with a concrete side wall (2A) and a top slab (2B), and the side wall, a reactor pedestal (4) and a diaphragm floor (6) are provided. And a liner and a liner anchor on a concrete side wall extending above the position of the liner on the top slab. container. 2. Side wall (2A) and top slab (2B)
The containment vessel according to claim 1, wherein the two liner anchors (2D) are set in a state where their circumferential positions are matched. 3. The containment vessel according to claim 2, wherein the liner anchors (2D) of the top slab (2B) are arranged radially. 4. A flat bar (13) having a height matched to a liner anchor (2D) of a top slab (2B) is integrally provided above a liner (2C) of a side wall (2A). The containment vessel according to claim 1, 2 or 3.