JPS5832196A - Device for receiving leaked high temperature liquid metal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for receiving and containing hot liquids, particularly liquid metals.

For example, it has been proposed to use liquid metals such as sodium and potassium as coolants in high temperature breeder reactors.

Heat exchangers that make up the reactor vessel and cooling system.

Steam generators, etc. are installed in each of the seven compartmentalized rooms of the building, and are connected to each other by piping, but if the containers or piping are damaged, high-temperature sodium will leak out and spill onto the floor of the room. Fall.

Therefore, in order to protect the concrete floor from leaked high-temperature sodium and to quickly recover leaked sodium, a steel tray is generally provided on the upper surface of the floor Ω.

The conventionally proposed trays are constructed from horizontal plates with a wide bottom, but they have the following problems.

In other words, the leaked sodium has a very high temperature, so the bottom of the saucer that directly receives it exhibits large thermal expansion, whereas the floor below it is relatively low-temperature, and there is a gap between the bottom of the saucer and the floor. Relative displacement occurs.

The slide mechanism for this becomes complicated.

Furthermore, since the containers and the like are quite large structures, the chamber and eventually the saucer are also large, and their construction, on-site production, and
Installation is difficult and requires a large amount of man-hours.

Furthermore, the high-temperature sodium that falls into the saucer spreads over the entire bottom, making recovery time-consuming and prolonging intense exothermic reactions.

The present invention was developed in view of the problems of the conventional products described above, and the gist of the present invention is to arrange a large number of cylindrical containers that are open at the top on the floor, and close the openings with plates, thereby preventing leakage and falling.
This is an attempt to solve the above-mentioned problem by storing Jum in a container near the point of fall.

The present invention will be explained below based on the illustrated embodiments.

In FIGS. 1 and 2, above the room 100 and the floor 5 surrounded by the side walls 1.2.3.4, there are many horizontal sides.
You can select the appropriate number according to your needs.

Furthermore, an appropriate arrangement such as staggered pitch can be selected.

) Cylindrical containers 16 are arranged upright in line with each other.

As shown in FIG. 3, which is a partially enlarged sectional view.

The periphery of the upper opening 18 of the container 16 is closely bonded to the perforated plate 12, and as shown in FIG. ing. The support member 20 consists of a seat 23 fixed to the upper surface of the floor 5 and a protrusion 25 protruding from the bottom surface 21, and the protrusion 25 is loosely fitted into the seat 23.

Further, on the periphery of the perforated plate 12, there is a trunk 27 as shown in FIG.
is formed and is in contact with the wall 2.

In the structure described above, if high-temperature sodium leaks from a container (not shown), etc., the perforated plate 12 located below
and falls onto the container 16.

The fallen high-temperature sodium flows into a container 16 near the point of fall, and when that container 16 becomes larger, it flows into another adjacent container 16. Sodium flows into and is contained in the number of containers 16 corresponding to the amount of leakage.

A gutter or the like may be formed in the perforated plate 12 so as to communicate the openings 18 of adjacent containers 16 to facilitate the above-mentioned inflow.

The hot sodium flows into container 16 and chamber 1.

The contact area with the air inside is limited by the horizontal cross-sectional area of the container 16, and exothermic reactions and the like occur only on that surface.

Container 16 is damaged by the inflow of hot sodium.

Because it expands thermally but is symmetrical about its axis.

Almost no relative displacement occurs between the protrusion 25 and the floor 5, and on the other hand, when the container 16 is shaken horizontally due to an earthquake or the like, it is supported by the seat 23.

According to the embodiment described above, there is a space between the axis of the container 16 into which the leaked high-temperature sodium has flowed and the floor 5.

Since no relative displacement occurs, no special sliding mechanism is required.
``The structure is simpler, there is no problem in transporting the container 16 even if it is manufactured in a factory (5), and the hemming operation can be done much more easily than in the conventional case.

Furthermore, the leaked high-temperature sodium flows into the limited container 16 and does not diffuse, and its contact with air is limited, so that its exothermic reaction and the like can be greatly suppressed.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a plan view showing an embodiment of the present invention.
A cross-sectional view taken along the line ■--■ in the figure, and FIGS. 3 and 4 are partial cross-sectional views showing enlarged portions of FIG. 2, respectively. 5... Floor, 10... Room, 12... Perforated plate, 14.
...Round hole, 16...Container, 18...Opening, 20...
・Supporting member Fig. 1/2 No. 20 Skull 30 Fig. 4 507-

Claims (1)

[Claims] At the bottom of the chamber where equipment handling high-temperature liquid metal is installed, there is a perforated plate extending horizontally, and a plurality of perforated plates arranged in parallel below the perforated plate, aligned with each hole of the perforated plate. It is characterized by comprising a cylindrical container and a support member interposed between the bottom surface of the container and the floor of the chamber, and the periphery of the upper opening of the container is tightly joined to the perforated plate. Receiving device for leaking hot liquid metal.