JPH0583160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transport method using a transport container employed for transporting pellets produced by volume reduction treatment of radioactive waste liquid to an underground storage tank; The present invention also relates to equipment for charging objects to be transported, which is used when loading pellets into a transport container.

BACKGROUND TECHNOLOGY Conventionally, this type of pellet conveyance involves introducing the pellets into the starting end of a belt conveyor at the input location, and conveying the pellets to the upper part of the storage tank via a plurality of belt conveyors arranged in a duct body. It was dispensed into this storage tank. Alternatively, as seen in Japanese Utility Model Application Publication No. 62-32400, pellets are put into a drum can (storage container) with an open top, the drum is conveyed to a dispensing place by a roller conveyor, and then the drum is placed at the dispensing place. It was turned over and discharged into a storage tank.

Problems to be Solved by the Invention According to the conventional method as described above, the pellets on the belt conveyor and the pellets in the drum with an open top are not completely quenched, so for example, the inside of the duct may be contaminated with radioactivity. Therefore, repair and inspection of belt conveyors and roller conveyors, which are arranged in large numbers over long distances, cannot be carried out easily and safely. Furthermore, since belt conveyors and drums with open tops are not completely sealed, the place where they are loaded becomes contaminated with radioactivity due to dust generated during loading, for example.

The first object of the present invention is to provide a transportation method using a transportation container that allows the transportation of objects to be transported to be carried out in a completely flexible manner and that also enables automation from loading to unloading. , also the second
The object of the present invention is to provide equipment for charging objects into a transport container, which allows objects to be transferred to be placed in a completely cooled state, and which also enables automatic loading.

Means for Solving the Problems In order to achieve the above-mentioned first object, a transportation method using the transportation container of the present invention is a transportation method using the transportation container of the present invention, which is capable of storing an inner container having a locking opening and having an opening at the upper end. A container for transportation is formed by an outer container and a lid that can freely close the opening and has an engaged part on the upper part, and the lid is removed through the engaged part at the loading location to cover the inner container. After loading the items to be transported, the opening is closed with the lid, and then the transport container is transferred to a self-propelled trolley to be transported to the dispensing location, where the lid is first removed, and then the opening is closed After taking out the inner container from the outer container through the inner container, the inner container is reversed to take out the object to be transported, and the inner container is rotated in the normal direction to be stored in the outer container, and then the opening is closed with a lid body, Thereafter, the transport container is returned to the input location using a self-propelled trolley.

In addition, in order to achieve the above-mentioned second object, the equipment for introducing objects into a transport container according to the present invention includes an outer container having an opening at the upper end and capable of storing an inner container having a locking opening; A transport container is formed by a lid body whose opening can be freely closed and has an engaged portion on the upper part, and a trolley capable of freely supporting the transport container is provided within an enclosure body having an entrance and exit, and a traveling path of the transport container is provided. A lid lifting device is provided above, which has an engaging portion that can be raised and lowered to allow the engaged portion of the lid to engage and disengage. A loading device is provided, which includes a lifting device having a locking portion that can be freely engaged and detached, and a loading device having a loading opening portion to which a locked opening portion of an inner container lifted by the lifting device can be connected.

Effect According to the configuration of the first invention described above, since the lid body can be opened and closed automatically via the engaged part at the loading location, the loaded objects to be transported into the inner container can be automatically loaded. Also, the lid can be opened and closed automatically at the dispensing location. By taking out the inner container from the outer container through the locked opening and inverting the inner container, the objects to be transported can be automatically discharged. The inner container is completely sealed by the outer container and the lid during transportation between the loading and unloading locations, which minimizes radioactive contamination of the transportation route. obtain. Furthermore, repairs and inspections of the transport device can be easily carried out by taking it out (branching) from the transport route, etc., since it is basically a self-propelled trolley only.

According to the configuration of the second invention, by placing the transport container on the trolley inside the enclosure body through the entrance/exit, the engaged part of the lid body can be engaged with the engaging part,
By operating the lid lifting device in this state to raise the engaging portion, the lid can be lifted via the engaged portion to open the opening. Then, by moving the trolley below the input port, the locked opening of the inner container can be locked to the locking part, and in this state, by operating the lift device to raise the locking part, The inner container can be lifted upward through the locked opening and pulled out from the outer container. Furthermore, by bringing the locked opening portion into pressure contact with the input opening portion, it is possible to input objects to be transported in a state that is not exposed to the outside. After charging, the lid is placed on the outer container by a reverse action to that described above, and the inner container containing the objects to be transported can be cut off from the outside.

Embodiment An embodiment of the present invention will be described below based on the drawings.

The transport container 1 will be explained with reference to FIGS. 1 to 3. The bottle-shaped inner container 2 has an outer ring member connected to the periphery of the opening 3 at the upper end to form a locked opening portion 4.
A ring-shaped sealing material 5 is disposed on the upper surface of the locked opening portion 4. The bottomed cylindrical outer container 6 can freely accommodate the inner container 2 through an opening 7 at its upper end, and is set to a depth such that the locked opening 4 is exposed above the top surface when the inner container 2 is stored. A ring-shaped sealing material 8 is disposed on the upper surface. A plurality of guides 9 are arranged on the inner peripheral surface of the outer container 6, and a plurality of hanging tools 10 are arranged on the upper part of the outer peripheral surface, and seating plates 11 are installed at four locations on the lower part through ribs 12, etc. It is arranged as follows. The cylindrical lid 13 has an annular protrusion 14 that can be fitted into the outer container 6 downward from the inner edge of the lower surface, and the opening 7 is closed by fitting the annular protrusion 14 into the outer container 6. . And at the top, there is a rod 15 standing from the center,
An engaged portion 17 consisting of a disc body 16 attached to the upper end of the rod 15 is provided. The inner container 2, the outer container 6, and the lid 13 are made of stainless steel, and the outer container 6 and the lid 13 are shaped to provide a sufficient sealing effect.

The transport container 1 is placed at a charging location 3 shown in FIG.
0 and a payout location 70 shown in FIG. Self-propelled trolley 20
is supported and guided by rails 21 and can freely travel back and forth on a fixed path, and has stepped portions 23 with open upper and inner sides formed on the upper surface of the support rod 22 erected from the four corners of the upper portion. By fitting and placing the seating plate 11, the transport container 1 can be freely supported. A fork or the like can be inserted through the space between the support rods 22.

In the loading place 30, a loading side transfer device 24 is disposed at the end of a certain path and facing from the path direction,
Further, in the dispensing place 70, a dispensing side transfer device 25 is disposed at the end of a certain path and facing from the side.
These transfer devices 24 and 25 have a similar structure,
Each includes a base body 26, a column body 27 integrated with this base body 26, an elevating body 28 supported and guided by this column body 27, and a fork 29 provided on this elevating body 28 so as to be freely retractable in the lateral direction. configured.

Next, the input location 30 will be explained with reference to FIGS. 4 to 8. A rectangular box-shaped enclosure 3 is placed at the input location 30.
1 is provided, and on one side wall there is a loading side transfer device 2.
An entrance/exit 32 facing 4 is formed. A door 33 for opening and closing the entrance/exit 32 is slid and guided by a pair of upper and lower guide rails 34, and sliding is performed by a cylinder device 35 provided between it and the surrounding wall 31. A floor rail 3 is provided within the surrounding wall body 31.
6 is disposed, and a trolley 38 supported and guided via wheels 37 is provided on the floor rail 36. A travel path 39 of this truck 38 is formed facing the entrance/exit 32, and reciprocating travel is performed by a cylinder device 40. Support rods 41 similar to those of the self-propelled truck 20 are erected on the truck 38, and step portions 42 are formed on the upper surfaces of these support rods 41. At a position above the traveling path 39 and on the side of the entrance/exit 32, there is an engaging part 4 in which the engaged part 17 of the lid 13 can be freely engaged and detached.
A lid lifting device 44 is provided which can freely move up and down. A pair of left and right engaging portions 43 are arranged side by side with a gap in between, and these are integrated with the lower end of the gate-shaped member 45. Elevation via this portal member 45 is as follows:
This is carried out by a cylinder device 46 attached to the top plate of the enclosure 31 and guided via a guide rod 47. A charging device 48 is provided on the opposite side of the lid lifting device 44 from the entrance/exit 32 . This loading device 48 includes a lift device 50 having a locking portion 49 to which the locked opening portion 4 of the inner container 2 can be freely engaged and detached, and a lifting device 50 having a locking portion 49 that allows the locked opening portion 4 of the inner container 2 to be lifted by the lifting device 50. The input port 51 can be freely connected to
It consists of Locking portion 49 of the lift device 50
are arranged in pairs on the left and right side by side with a gap, and these are integrated at the lower end of the elevating body 52. This elevating body 52 is guided by a guide rod 53 attached to the inner surface of the surrounding wall 31, and is lifted and lowered by a cylinder device 54 attached to the top plate. Also, the locking part 4
A load cell 55 for detecting the input amount by weight is provided at a portion 9. The input port 51 is disposed at the lower end of the input cylinder 56 that passes through the top plate.
An air vent pipe 58 is branched from the charging cylinder 56, and pellets (objects to be transported) 5 are discharged from the charging cylinder 56.
The dust generated by charging 9 is sucked into the processing device (not shown) and removed.
6 to maintain negative pressure. Here, the pellets 59 are produced, for example, by reducing the volume of radioactive waste liquid, and therefore the dust and air that are removed by suction are contaminated with radioactivity. The surrounding wall body 3
1 is provided with a saucer 60 that is movable between a position facing the input port 51 from below and a position away from this position. Installed vertical rotation axis 62
A lever 64 attached to the upper end of the rotating shaft 62 is linked to a cylinder device 65.

Next, in FIGS. 9 and 10, the payout location 70
Explain. A stepped box-shaped surrounding wall body 71 is provided in the dispensing place 70, and an entrance/exit 72 facing the dispensing side transfer device 25 is formed in one side wall of the enclosing wall body 71. A door 73 for opening and closing the entrance/exit 72 is guided to slide laterally by a pair of upper and lower guide rails 74, and the sliding is performed by a cylinder device 75 provided between the door 73 and the surrounding wall 71. A floor rail 76 is disposed within the surrounding wall body 71, and a cart 78 supported and guided by wheels 77 is provided on the floor rail 76. The running route 79 of this trolley 78 is the entrance 7
2, and the reciprocating movement is performed by a cylinder device 80. Support rods 81 are erected on the truck 78, and step portions 82 are formed on the upper surfaces of these support rods 81. A lid lifting device 84 is provided at a position above the running path 79 on the side of the entrance/exit 72 and has an engaging portion 83 that can be freely engaged and disengaged with the engaged portion 17 of the lid 13 and is movable up and down. A pair of left and right engaging portions 83 are arranged side by side with a gap in between, and these are integrated with the lower end of the gate-shaped member 85. Raising and lowering via this portal member 85 is performed by a cylinder device 86 attached to the top plate of the enclosure wall 71 and guided via a guide rod 87. A dispensing device 88 is provided on a side of the lid lifting device 84 that is remote from the entrance/exit 72 . This dispensing device 88 includes a lift device 90 having a locking portion 89 to which the locked opening portion 4 of the inner container 2 can be freely engaged and detached, and a lifting device 90 having a locking portion 89 that allows the locked opening portion 4 of the inner container 2 to be lifted by the lift device 90. has a dispensing port 91 that can be freely connected to the dispensing port 91 and is rotatable around a horizontal axis 92. In other words, a rotating shaft 93 located on a horizontal axis 92 along the traveling path 79 is supported by a bearing 94 on the side of the surrounding wall 71, and a disk-shaped rotating frame 95 is fixed to the middle part of this rotating shaft 93. Further, an electric motor 97 is connected to the end of the rotating shaft 93 via a worm reducer 96. The locking portions 89 of the lift device 90 are arranged in pairs on the left and right with a gap, and these are integrated with the lower end of the elevating body 98. This elevating body 98
is guided by a guide rod 99 attached to the inner surface of the rotating frame 95, and lifting and lowering is performed by a cylinder device 100 attached to the rotating frame 95. The dispensing port 91 opens the rotary frame 95 by approximately 45 mm.
A clamp device 10 is attached to the downward end of the dispensing tube 101 penetrating through the dispensing tube 101 at an angle of
2 is provided. This clamping device 102 is disposed on the rotating frame 95 side, and is composed of a plurality of clamping claws 103, a cylinder device 104 for swinging these clamping claws 103, and the like. The upper end of the dispensing cylinder 101 is an outlet 105,
A hopper 106 facing the outlet 105, which is turned downward by 180 degree rotation, is disposed outside the outer surface of the rotary frame 95. A discharge pipe 107 connected to the lower end of the hopper 106 reaches a storage tank (not shown), and a valve 108 and the like are interposed in the middle of the discharge pipe 107. Inside the surrounding wall body 71, there is a tray 109 which is movable between a position facing the dispensing opening 91 from below and a position away from this position.
This tray 109 is connected to a vertical rotating shaft 111 attached to the surrounding wall 71 via a bearing 110.
A cylinder device 114 is connected to a lever 113 attached to the upper end of the rotating shaft 111 via an arm 112.

Next, a transport operation using the transport container 1 in the above embodiment will be explained.

As shown in FIG. 3, the inner container 2 is empty, and the inner container 2 is stored in the outer container 6, and the empty transport container 1 has its opening 7 closed with a lid 13.
is placed on the self-propelled trolley 20 and delivered to the payout location 70.
From there, it is transported to a loading location 30 as shown in FIG. And the transport container 1 on the self-propelled trolley 20
is received by the fork 29 by a combination of the vertical movement of the elevating body 28 of the loading side transfer device 24 and the lateral movement of the fork 29. Then, the door 33 is slid by the cylinder device 35 to open the entrance 32.
At this time, the cart 38 inside the surrounding wall 31 has moved toward the entrance/exit 32, and the engaging portion 43 of the lid lifting device 44 is at its lower limit. Therefore, after opening the entrance/exit 32, by operating the fork 29 in the opposite direction to the above-mentioned receiving operation, the transport container 1 is moved to the support rod 41 of the trolley 38, as shown by the imaginary line A in FIG. You can pass it up.
When carried in by the fork 29, the rod 15 moves between the pair of left and right engaging portions 43, and the disc body 16 is positioned above these engaging portions 43.
Then, after the fork 29 is moved backward and the entrance/exit 32 is closed with the door 33, the cylinder device 46 of the lid lifting device 44 is retracted. As a result, the engaging portion 4
3 engages with the disc body 16 from below, and lifts the lid body 13 upwards to open the opening 7 of the outer container 6, as shown by the solid line in FIG. Around this time, as shown by the imaginary line in FIG. 7, the saucer 60, which was facing the input port 51 from below, is moved through the lever 64 and arm 63 by the actuation of the cylinder device 65, as shown by the dotted line in FIG. The locking portion 49 of the lift device 50 is already at the lower limit.
Therefore, by moving the cart 38 below the loading device 48 by the cylinder device 40, the neck of the inner container 2 moves between the pair of left and right locking portions 49, and is covered above these locking portions 49. This is where the locking opening 4 will be located. In this state, the cylinder device 54 of the lift device 50 is contracted to raise the elevating body 52. As a result, the locking part 49 engages with the locked opening part 4 from below, lifts the inner container 2 upward, and lifts the outer container 6.
Pull out the top from the By this lifting, the locked opening portion 4 is brought into pressure contact with the input opening portion 51 as shown by the solid line in FIG. Next, pellets 59 are placed in the charging cylinder 56.
When the pellets 59 are supplied, the pellets 59 are thrown into the inner container 2 from the charging cylinder 56, and the dust generated at this time is removed by air removal by riding on the suction flow that maintains the negative pressure inside the charging cylinder 56. It is suctioned away through tube 58. When the input amount reaches a predetermined amount, the load cell 55 detects and operates, thereby stopping the input. Then, the locking portion 49 is lowered, and the inner container 2 is housed in the outer container 6, so that the outer container 6 receives the entire weight. At this time, the tray 60 is moved below the input port 51 to catch the pellets 59 that have fallen due to some reason. Next, the cart 38 is moved toward the entrance/exit 32 side, and the outer container 6 is positioned below the lid 13. Then, the engaging portion 43 is lowered, the lid 13 is placed on the outer container 6, and the opening 7 is closed. Next, the door 33 is slid to open the entrance/exit 32, and the loading side transfer device 24 is operated in the opposite direction to that at the time of carrying in, so that the actual transport container 1 can be transferred from the cart 38 to the self-propelled cart 20. And self-propelled trolley 20
, while being guided by the rail 21 at the payout location 70.
make it run to. At this time, the transport container 1 is
The sealing material 8 acts sufficiently due to the weight of the container 3, resulting in a completely sealed state between the outer container 6 and the sealing material 5, which also acts as a two-stage seal, preventing radioactivity from being released during travel. will not leak.

The self-propelled trolley 20 that has traveled to the payout location 70
As shown in FIG.
Received on 9th. Next, open the doorway 72,
As shown by imaginary line B in FIG. 10, the container 1 for transport on the fork 29 is transferred onto the cart 78, and at this time the engaged portion 17 is engaged with the engaging portion 83. After retracting the fork 29 and closing the entrance/exit 72, the engaging portion 83 is raised to lift the lid pair 13 as shown by the solid line in FIG. Next, trolley 78
is run to lock the locked opening portion 4 in the locking portion 89, and as the locking portion 89 rises, the inner container 2 is lifted and completely pulled out from the outer container 6 as shown by the solid line in FIG. Then, with the locked opening portion 4 pressed from below against the dispensing opening portion 91 located downwardly below the horizontal axis 92, each clamp device 102 is operated to connect the clamp claw 103 and the dispensing opening portion. The locked opening portion 4 is held between the opening portion 91 and the opening portion 91 . Next, electric motor 9
7, the rotating frame 95 is rotated via the rotating shaft 93.
180 degrees, and the imaginary line in Fig. 9 and the 10th
As shown in the imaginary line in the figure, the inner container 2 is positioned in the opposite direction above the horizontal axis 92, and
The outlet 105 is directed downward below the horizontal axis 92 and faces the hopper 106. As a result, the pellets 59 stored in the inner container 2 move under their own weight, fall inside the dispensing tube 101, and drop into the hopper 106.
The liquid is discharged into the storage tank through the discharge pipe 107. After performing such dispensing, the rotating frame 95 is rotated 180 degrees in the forward or reverse direction,
Return the inner container 2 to the normal direction. and clamp device 1
02 is released, the locking portion 89 is lowered to house the inner container 2 in the outer container 6. Then trolley 7
8 positions the outer container 6 below the lid 13, lowers the engaging portion 83, places the lid 13 on the outer container 6, and closes the opening 7. Thereafter, by transferring the empty transport container 1 onto the self-propelled trolley 20 using the dispensing side transfer device 24, the transport container 1 can be returned to the input location 30 again.

Effects of the Invention According to the first aspect of the present invention having the above configuration, the lid can be opened and closed automatically via the engaged portion at the loading location, and thereby the loaded objects cannot be loaded into the inner container. This can be done automatically, and the lid can also be opened and closed automatically at the dispensing location. Further, by reversing the inner container taken out from the outer container through the locked opening, the objects to be transported can be automatically discharged. Therefore, automation from loading to dispensing can be easily realized. In particular, according to the present invention, since the inner container is completely softened between the outer container and the lid during transportation between the loading location and the discharging location, the transportation route is contaminated with radioactivity. Furthermore, since repairs and inspections of the transport device can be carried out easily and safely by removing (branching) from the transport route, since basically only the self-propelled trolley is involved.

Furthermore, according to the second aspect of the present invention having the above configuration, by placing the transport container on the trolley within the enclosure, the engaged portion of the lid body can be engaged with the engaging portion,
By raising the engaging portion in this state, the lid can be lifted via the engaged portion to open the opening. Then, by moving the trolley below the input port, the locked opening can be locked to the locking part, and by raising the locking part in this state, the locking port can be moved through the locked opening. The inner container can be lifted upward and pulled out from the outer container. Further, by bringing the locked opening portion into pressure contact with the input opening portion, it is possible to input objects to be transported in a state that is not exposed to the outside. After loading, the lid is placed on the outer container by a reverse action, and the inner container containing the object to be transported can be separated from the outside. Thus, according to the present invention,
The objects to be transported can be loaded into the transport container automatically while being completely disconnected from the outside.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the transport container, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional front view of the same, and Fig. 4 is a partially cutaway view of the loading location. A perspective view, FIG. 5 is a front view, FIG. 6 is a side view, and FIG.
8 is a longitudinal sectional side view of the same, FIG. 9 is a partially cutaway perspective view of the dispensing location, and FIG. 10 is a longitudinal sectional front view of the same. DESCRIPTION OF SYMBOLS 1... Container for transportation, 2... Inner container, 3... Opening, 4... Locked opening, 6... Outer container, 7... Opening, 11... Seating plate, 13... Lid body , 15...
Rod, 16...Disc body, 17...Engaged portion, 2
0... Self-propelled trolley, 21... Rail, 24... Input side transfer device, 25... Output side transfer device, 29...
...Fork, 30... Input location, 31... Surrounding wall body, 32... Entrance/exit, 33... Door, 38... Dolly, 43... Engagement part, 44... Lid body lifting device,
48... Input device, 49... Locking part, 50... Lift device, 51... Insertion opening part, 52... Elevating body,
55...Load cell, 56...Charging cylinder, 58...
Air vent pipe, 59... Pellet (transferred object), 6
0... saucer, 70... dispensing place, 78... trolley, 84... lid lifting device, 88... dispensing device, 90... lift device, 92... horizontal axis, 9
5... Rotating frame body, 102... Clamping device, 10
6...Hopper.

Claims (1)

[Scope of Claims] 1. An outer container that can freely accommodate an inner container having a locked opening and has an opening at the top end, and a lid that can freely close the opening and has an engaged part at the top for transportation. A container is formed, and at the loading location, the lid is removed via the engaged part and the object to be transported is put into the inner container.The opening is closed with the lid, and then the transport container is placed on a self-propelled trolley. At the dispensing place, first remove the lid, then take out the inner container from the outer container through the locked opening, and then turn the inner container over to remove the objects. A transport container is used, which is characterized in that the inner container is unloaded, the inner container is rotated in the normal direction, the container is stored in the outer container, the opening is closed with a lid, and the transport container is then returned to the loading location using a self-propelled cart. Transportation method. 2. A transport container is formed by an outer container that can accommodate an inner container having a locked opening and has an opening at the upper end, and a lid that can close the opening and has an engaged part at the top. A lid lifter that is provided with a trolley that can freely support the transport container in an enclosure having a structure, and has an engagement portion that can be freely raised and lowered above the running path of the trolley and that allows the engaged portion of the lid to be freely engaged and detached. a lifting device that is provided with a locking portion that is arranged in parallel with the lid lifting device and that allows the locking opening portion of the inner container to be freely locked and detached;
A device for charging objects into a transport container, characterized in that a charging device is provided, which comprises a charging port portion to which a locked opening portion of an inner container lifted by the lift device can be freely connected.