JPH0233944B2 - KYASUKUHOKANKO - Google Patents

Description

[Detailed description of the invention] The present invention relates to cask storage.

In cask storage, it is important for safety to cool the casks during storage. There are two ways to cool casks: a forced cooling method using a fan and a natural cooling method, but the forced cooling method is superior from the perspective of construction cost, which allows the storage unit to be made more compact. But on the other hand,
During a power outage, when the power goes out and the emergency diesel generator does not operate, an abnormal situation may occur.
It may lead to a serious accident.

Therefore, the present invention provides a cask storage that solves these problems, and is characterized by the fact that forced cooling is provided in the cask-containing storage from the fan chamber to the outside through the periphery of the cask. A natural ventilation path formed by forming a passage and communicating with the outside of the refrigerator is provided in communication with the forced cooling passage through a communication port, and an opening/closing damper is provided at the communication port to maintain an open posture by gravity biasing. and a damper posture holding device that holds the opening/closing damper in a closed position when energized and releases the restraint on the opening/closing damper during power outage is provided and is connected to the fan in the fan room at the same time as the energization. The configuration allows the cask to be cooled, typically via forced cooling channels. Therefore, the storage main body can be made compact and construction costs can be reduced. On the other hand, when the power goes out and the emergency diesel generator does not operate, and the fan stops operating due to a power outage, the opening/closing damper changes to the open position and is stored via the natural ventilation path and communication path. This allows natural wind to enter the chamber and cool the cask. Therefore, there is no risk of a major accident.

Hereinafter, one embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a building that is slightly dug down into the ground and placed in the dug-out part, and the upper surface of a floor 3 formed slightly above the floor 2 is set flush with the upper surface of the ground. Furthermore, the inside of the building 1 is divided into an access space 5 on the side of the entrance/exit 4, a large room 6 behind it, and a waiting room 7, an electrical control room 8, and two fan rooms 9 provided next to the access space 5. . A concrete side wall 10 having a substantially square planar shape is formed in the large room 6, and a passage 11 communicating with the entrance/exit space 5 is formed in the center of the side wall 10 by cutting out the floor 3. Numeral 13 denotes a plurality of cask storage spaces (5 each, 10 in total) formed by partition walls 12 on both sides of the passage 11 in the side wall 10, and 13 denotes each cask storage space I to N. It is a cask pedestal formed at a position slightly above the floor 3, and has a notch 14 in the center.
has been formed. 15 is from fan room 9 to floor 3
a forced cooling passage extending along the side wall 10 beneath the
Reference numeral 6 indicates a forced ventilation hole formed on the floor 3 in each cask storage space I to N, and reference numeral 17 indicates a reinforcement extending below the floor 3 in each cask storage space I to N in a direction perpendicular to the partition wall 12. It is also a wall and has a first flow port 18 formed therein. A first hole 19 penetrates the side wall 10 and communicates the forced cooling passage 15 with the bottom of the floor 3 of each cask storage space.
The communication port 20 is also a ceiling wall formed integrally with the side wall 10 on the upper surface of the side wall 10, and is a ceiling wall that is integrally formed with the side wall 10.
A notch 21 is formed at a location opposite to.
22 is a top plate portion that covers the first opening 21, and a second flow port 23 is provided between the top plate portion 22 and the ceiling wall 20.
has been formed. 24 is a side plate erected at the upper end of the side wall 10, 25 is a roof provided on the side plate 24, and a shutter-type exhaust port 26 is provided in the center of the side plate 24.
A small tower 27 is formed. 28 is building 1
The air inlets 29 formed on both side walls of the building 1 are covers disposed on both sides of the building 1 to cover the air inlets 28, and are open at the bottom. 30 is a second communication port formed in the side wall 10 below the cask holder 13; 31 is the communication port 3;
A motor 43 with an electromagnetic clutch mechanism serves as an opening/closing damper for opening and closing 0 and serves as a fan posture holding device.
During power supply, the damper 31 is rotated in the direction of arrow E by the operation of the motor 43 to close the second communication port 30, and in the event of a power outage, the electromagnetic clutch is disconnected and the damper 31 is closed due to its own weight. It rotates in the direction of arrow F, and the second communication port 30 is opened. Incidentally, instead of the motor 43 with an electromagnetic clutch mechanism, a rack and pinion mechanism may be used to rotate the damper 31 in the direction of the arrow E, and the damper 31 may be held by an electromagnet to close the second communication port 30. 4
5 and 46 are limit switches, and 47 is a buffer. 32 is a first rail laid on the floor 2 from the access space 5 to the passage 11; 33 is the first rail 32;
The lower carriage is placed on the lower carriage, and a second rail 34 extending in a direction perpendicular to the first rail 32 is laid on its upper surface. Reference numeral 35 denotes a pair of upper carts placed on the second rail 34, and a pair of jacking devices 36 are provided on the upper surface thereof. Reference numeral 37 denotes a rail laid on the floor 3 in each of the cask storage spaces 1 to 3, and is configured to be connectable to the second rail 34. Reference numeral 38 denotes a cask mounting table, which has a large number of cooling air passage holes formed therein. 39 is a cask placed on the mounting table 38; 40 is an entrance/exit gate provided at the entrance/exit 4;
Reference numeral 1 designates a partition gate provided between the entrance/exit space 5 and passage 11, and reference numeral 42 designates a folding door provided at the entrance/exit of each of the cask storage spaces.

In the above configuration, the state shown by the solid line in FIG. 2 shows the state in which the cask 29 is stored in the cask storage space. In such a state, for example, when storing the cask 39 in the storage space C, the following procedure may be performed. That is, the lower truck 33 shown in solid line in FIG. 2 is moved in the direction of arrow A and brought near the entrance/exit 4. Next, the entrance/exit gate 40 is opened, and the cask mounting table 38 that supports the cask 39 is placed on the jacking device 36 of the upper truck 35. Next, the lower cart 33 is moved in the direction of arrow B and brought to a position facing the storage space C. Next, the jacking device 36 is operated to lift the cask mounting table 38, and the upper cart 35 is moved in the direction of arrow C and placed on the third rail 37. When the cask mounting table 38 has completely entered the cask storage space C, the cask mounting table 38 lifted by the jacking device 24 is lowered. As a result, the cask mounting base 38 is placed on the cask holder 13,
The cask 39 is in a storage state.

Next, in the storage state, the cooling air sent into the forced cooling passage 15 by the fan in the fan chamber 9 enters from each first communication port 19 under the floor 3 of each cask storage space I to N, and each forced ventilation The air is blown up from the mouth 16, passes around the cask 39 through the passage hole of each cask mounting table 38, cools the cask 39, passes between the ceiling wall 20 and the door 42, and further passes through the notch 21, It is dissipated to the outside via the second flow port 23 and the exhaust port 26. Note that during this time, the second communication port 30 is closed by the damper 31.

Next, in the above state, a power outage occurs due to the power being cut off and the emergency diesel generator not working, etc. When the fan operation is stopped, the electromagnetic clutch is also turned off at the same time, and the damper 31 rotates in the direction of arrow F due to its own weight. Then, the second communication port 30 is opened, and air enters each cask storage space I to N from below the outside air cover 29 through the air inlet 28 and the second communication port 30, and passes through the passage hole of each cask mounting table 38. The air passes around the cask 39 to cool the cask 39, and thereafter is radiated to the outside in the same manner as in the case of forced cooling described above.

As described above, according to the cask storage of the present invention, the casks can normally be cooled through the forced cooling passage. Therefore, the storage main body can be made compact and construction costs can be reduced. On the other hand, when the power goes out, the emergency diesel generator doesn't work, and the fan stops.
In conjunction with this, the opening/closing damper assumes an open position, allowing natural wind to enter the storage main body through the natural ventilation path and the communication port, thereby cooling the casks. Therefore, there is no risk of a major accident.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a cross-sectional view, FIG. 2 is a view taken in the direction of the - arrow in FIG. FIG. 1 is a view taken along the - arrow, and FIG. 5 is a cross-sectional view of the main part. 9...Fan chamber, 13...Cask pedestal, 15
...Forced cooling passage, 16...Forced ventilation port, 19...
...First communication port, 23...Second communication port, 28...Air inflow port, 30...Second communication port, 31...Opening/closing damper, 33...Lower truck, 35...Upper truck, 3
8... Cask mounting stand, 39... Cask, 43
...Motor with electromagnetic clutch mechanism, I......Cask storage space.

Claims (1)

[Claims] 1. A forced cooling passage is formed in the warehouse containing the cask, from the fan chamber passing around the cask to the outside, and a natural ventilation passage formed in communication with the outside of the warehouse is connected to the forced cooling passage through a communication port. The communication port is provided with an opening/closing damper that maintains an open position by gravity bias, and a damper that holds the opening/closing damper in a closed position when energized and releases the restraint on the opening/closing damper during a power outage. A cask storage, characterized in that a posture holding device is connected to the same power source as the fan in the fan room.