JPH10311896A - Cell room cooling system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the labor involved in installing a heat exchanger, to effectively use the inside of a cell room, and to efficiently cool the vicinity of the ceiling of the cell room. SOLUTION: This is a device for cooling the internal air of a cell room, a heat exchanger for taking in the internal air of the cell room and sending out cool air, and a duct connected to the heat exchanger for guiding the cool air to a ceiling surface of the cell room. And an outlet provided in the duct for discharging cool air from near the ceiling surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a cell chamber, and more particularly, to an arrangement of a heat exchanger in a cell chamber and a discharge direction of cold air.

[0002]

2. Description of the Related Art When handling a large amount of radioactive substances such as high-level waste liquids, in order to isolate them from the surrounding environment, a desired treatment should be performed in a cell room for preventing leakage of internal air. ing.

For example, in a vitrification facility for high-level waste liquid in a facility related to a nuclear fuel reprocessing facility, it is necessary to suppress a rise in temperature near the ceiling of the cell room and make the temperature distribution throughout the cell room uniform. As a technique relating to the cooling of the cell chamber, Japanese Patent Application Laid-Open No. 06-273585 discloses a "radioactive substance storage cell cooling device".
The cooling device is configured to take in the air inside the cell room into the heat exchanger and then discharge the cool air toward the ceiling surface of the cell room, cool the vicinity of the ceiling where heat easily accumulates, and cool the entire cell room. Is made uniform.

[0004]

However, in the above-mentioned cooling device, it is necessary to dispose the device itself at a certain interval from the ceiling surface in order to discharge cold air toward the ceiling surface.
In particular, when a plurality of cooling devices are used in a distributed manner, if the cooling devices are arranged at a fixed interval from the ceiling surface, the installation of the cooling devices is troublesome, and furthermore, a place where the equipment and the like can be installed in the cell room. Is limited, and inconveniences such as not being able to effectively use the cell room occur.

[0005] The present invention has been made in view of these problems, and achieves the following objects. To centralize the heat exchangers in the cooling device to reduce the labor involved in installing the heat exchangers. Distribute cold air downward from the vicinity of the ceiling and arrange heat exchangers on the side walls to effectively use the cell room. Properly arrange the cool air outlets to efficiently cool the area near the ceiling of the cell room. The maintenance room is prevented from being contaminated through the cell overhead crane and the ceiling hatch by directing the flow of ventilation in the cell room downward.

[0006]

As a device for cooling the air inside the cell room, a heat exchanger that takes in the air inside the cell room and sends out cool air, and a cool air connected to the heat exchanger and cools the air inside the cell room. And a blowout port provided in the duct to discharge cool air from near the ceiling surface.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cell chamber cooling device according to the present invention will be described below with reference to FIGS. FIG. 1 is a front sectional view of the cooling device, and FIG. 2 is a plan view of the cooling device. 1 and 2, reference numeral 1 denotes a cell chamber, 2 denotes a heat exchanger, 3 denotes a vertical duct (duct), 4 denotes a horizontal duct (duct), and 5 denotes an outlet.

[0010] As shown in FIG. 1, the cell room 1 has a maintenance room 6 provided at an upper portion thereof and a ceiling hatch 8 provided at a ceiling surface 7.
Is opened, a passage to the maintenance room 6 is secured. In the maintenance room 6, a traveling crane 9 is installed for carrying in and out the equipment to and from the cell room 1.

Further, the side of the cell chamber 1 is shown in FIGS.
As shown in FIG. 1, a crane accommodating chamber 10 is provided.
1 is accommodated. The cell overhead crane 11 runs on a track 12 erected from the crane accommodating room 10 to the cell room.

As shown in FIG. 1, the heat exchanger 2 includes a fan 14 for taking in and sending out the internal air of the cell chamber 1, a filter 15 provided at a portion for taking in the internal air, and a refrigerant supply system. The heat exchange unit 16 exchanges heat between the refrigerant (for example, cooling water) from 17 and the internal air passing through the filter 15. This heat exchanger 2 comprises a cell chamber 1
As shown in FIG. 2, in the cell chamber 1, the cell ceiling crane 11 is disposed below the side wall surface 13 where the cell overhead crane 11 approaches.

As shown in FIG. 1, two vertical ducts (ducts) 3 are connected to the heat exchanger 2 and are vertically arranged along the side wall surface 13 toward the ceiling surface 7. The cold air from 2 is guided to the vicinity of the ceiling 7.

The horizontal duct (duct) 4 is shown in FIGS.
As shown in the figure, two vertical ducts 3 are connected to the upper end of each vertical duct 3 and are arranged horizontally along the ceiling surface 7.
The cool air is guided along the ceiling surface 7 from the upper end. Each horizontal duct 4 has a ceiling hatch 8 and a track 12
Is arranged in consideration of the cell traveling crane 11 that travels.

The outlet 5 is, as shown in FIGS.
A plurality of cooling air is provided along the longitudinal direction of each horizontal duct 4, and cool air guided by the horizontal duct 4 is discharged downward from near the ceiling surface 7. These outlets 5
Are arranged so as to correspond to each of the divided ceiling surfaces 7 of the cell chamber 1 as shown in FIG.

In the cell cooling device thus configured, when the fan 14 is operated, the internal air filtered by the filter 15 is cooled by the heat exchange unit 16 and sent out of the heat exchanger 2. After that, the cool air guided to the vicinity of the ceiling surface 7 by the vertical duct 3 and the horizontal duct 4 is discharged downward from each outlet 5.

That is, after the internal air near the lower part of the cell chamber 1 is taken in and cooled by the heat exchanger 2,
By discharging the cool air downward from the vicinity of the ceiling surface 7, the vicinity of the ceiling surface 7 is cooled. Therefore, while cooling the vicinity of the ceiling portion 7 to make the temperature distribution in the cell chamber 1 uniform, it suppresses the radioactive material from rising due to the downward cold wind, and reduces the amount of the radioactive material reaching the ceiling surface 7. ing.

Since it is not preferable to install equipment and the like in the cell room 1 outside the working range of the cell overhead crane 11, the vicinity of the side wall surface 13, which is the traveling limit of the cell overhead crane 11, is the working range. No devices or the like are installed near the side wall surface 13. In contrast,
Since the heat exchanger 2 rarely becomes a work target using the cell overhead crane 11, it is possible to dispose the heat exchanger 2 out of the work range. Therefore, FIG.
As shown in FIG. 2 and FIG. 2, by arranging both the heat exchanger 2 and the vertical duct 3 on the side wall surface 13, the space in the vicinity of the side wall surface 13 is used to achieve effective use in the cell chamber 1.

Further, since the air outlets 5 are arranged so as to correspond to each of the divided ceiling surfaces 7 of the cell chamber 1, the vicinity of the ceiling surface 7 is efficiently cooled by the cool air from each air outlet 5.

In the cell cooling device according to the present invention, the following technology can be adopted instead of the above-described embodiment. (A) The heat exchanger 2 is arranged at the upper part of the side wall surface 13 and the intake of the internal air is set at the lower part in the cell chamber 1. (B) Dividing the vertical duct 3 or the horizontal duct 4 on the way, and dividing and guiding the cool air at this branch point. (C) The shape, number, and arrangement of the outlets 5 are arbitrary. In addition, the present invention is applied to a cell for handling a chemical substance, a cell set to a predetermined gas atmosphere, and the like, as well as a radioactive substance storage cell as a cell chamber.

[0019]

According to the cell chamber cooling device of the present invention, the following effects can be obtained. (1) Since the cool air from the heat exchanger is guided to the ceiling surface by the duct, the heat exchanger can be centrally arranged in the cell room, and the labor involved in installing the heat exchanger can be reduced. (2) By releasing cold air from near the ceiling,
It is possible to suppress the radioactive material and the like in the cell room from rising, and reduce the amount of such a material and the like reaching the ceiling surface. (3) By radiating cold air downward from the vicinity of the ceiling and arranging the heat exchanger on the side wall, a wide area where equipment and the like can be installed in the cell room is secured widely.
Effective utilization inside the cell room can be achieved. (4) By arranging the air outlets corresponding to the divided ceiling surfaces of the cell chambers, the vicinity of the ceiling surface can be efficiently cooled by the cool air from each air outlet.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing one embodiment of a cell chamber cooling device according to the present invention.

FIG. 2 is a plan view showing one embodiment of a cell chamber cooling device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cell room 2 Heat exchanger 3 Vertical duct (duct) 4 Horizontal duct (duct) 5 Outlet 7 Ceiling surface 13 Side wall surface

Claims (1)

[Claims] 1. A device for cooling the air inside a cell chamber (1), comprising: a heat exchanger (2) for taking in the air inside the cell chamber and sending out cool air; A duct (3, 4) for guiding to the ceiling surface (7) of the cell chamber, and an outlet (5) provided in the duct and for discharging cool air from near the ceiling surface, cooling the cell room. apparatus.