JPH0521038Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a transport container having a rotary joint.

2. Description of the Related Art Powdered nuclear fuel materials used in nuclear fuel facilities are normally transported to processing equipment in sealed transport containers. Incidentally, conventionally, flexible joint pipes have been used to transfer nuclear fuel material from a device to a transport container and from a transport container to a device. That is,
As shown in FIG. 7, on-off valves 52, 53 are provided above and below the transport container 51, and each device 54, 5
On-off valves 56 and 57 are also provided on the 5 side, and these on-off valves 56 and 57 are provided with flexible tubes 58 and 57, respectively.
59 is installed. Therefore, for example, when transferring nuclear fuel material from the device 54 to the transfer container 51, first the flange 60 of the flexible tube 58 is opened and closed by the on-off valve 56.
It was connected to the side flange 61 with bolts, then opened both on-off valves 52 and 56 to transfer the nuclear fuel material into the transfer container 51, and then closed the on-off valves 52 and 56 and removed the flanges 60 and 61. . Further, when transferring the powdered radioactive material from the transport container 51 to the device 55, the same procedure as described above was carried out.

Problems to be Solved by the Invention According to the above-mentioned conventional configuration, when transferring powdered nuclear fuel material from the device to the transport container and vice versa, when connecting the flexible pipe and the on-off valve,
The flanges must be bolted to each other, which is a time-consuming and extremely troublesome task in a controlled area. Radioactive dust remains inside the flexible tube and on-off valve, and this dust is released during work and transportation. Spread into the air or floor, causing radioactive contamination.

Therefore, an object of the present invention is to provide a transport container that can solve the above problems.

Means for Solving the Problems In order to solve the above problems, the transport container of the present invention is a transport container for transporting objects from one device to another, and one end is rotatably held in the main body of the transport container. At the other end of the cylindrical body, a first engaging member is provided which can be freely engaged with and detached from the device by rotation of the cylindrical body, and the cylindrical body is provided inside the other end of the cylindrical body. A first opening/closing lid is swingably provided via a support shaft provided in a direction perpendicular to the rotation axis of the cylindrical body, and the first opening/closing lid is rotatably mounted on the apparatus side around the same axis as the rotation axis of the cylindrical body. A second engaging member is provided on the outer surface of the first opening/closing lid and is detachable from the second opening/closing lid, which is held and can be detached from the device at a predetermined rotational position, and the support shaft is attached to the cylinder. It is equipped with a lever that can be rotated from the outside of the shaped body.

Effect In the above configuration, when storing a transported object from the device into the transport container, the cylindrical body is rotated and the first engaging member at the end thereof is engaged with the device side, and then the cylindrical body is further rotated. Then, by engaging the second opening/closing lid with the first opening/closing lid and separating it from the apparatus side, and then swinging the first opening/closing lid via the lever, the apparatus side and the transport container side are connected. , the conveyance object is accommodated within the conveyance container body.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

The transport container according to the present invention is used to transport powdered radioactive materials handled within a facility that uses nuclear fuel materials to a processing device, and the gist thereof is to transfer powdered radioactive materials between the equipment and the transport container. Located at the connection. An upper connecting part for connecting to the apparatus side is provided at the upper part of the transport container body, and a lower connecting part for connecting to other processing apparatuses is provided at the lower part of the container main body. Since these two connection parts have the same structure, in this example,
The upper connection part will be explained.

In FIGS. 1 to 3, reference numeral 1 denotes a cylindrical body rotatably held at the top of a transport container body (hereinafter simply referred to as the container body) 2 around a vertical axis (in addition,
(The axis of the cylindrical body and its rotation axis are aligned), and the bottom plate 3 has a connecting short pipe 4 on the side of the container body 2.
A circular lower opening 5 communicating with is formed in the top plate 6, and a circular upper opening 9 corresponding to the discharge pipe 8 on the device 7 side is formed in the top plate 6. Further, this cylindrical body 1 is made detachable from the device 7 side, and is provided with a circular first opening/closing lid 10 that can freely open and close the upper opening 9 from inside. is detachably connected to a circular second opening/closing lid 11 detachably provided at the lower end of the discharge pipe 8 on the device 7 side. That is, the first opening/closing lid 10
is supported by a support shaft 12 provided within the cylindrical body 1 in a direction orthogonal to the rotation axis of the cylindrical body 1, and is supported by a lever 13 fixed to the end of the support shaft 12. It can be freely swung from the outside. Then, the engagement and disengagement between the cylindrical body 1 and the discharge pipe 8,
Attaching and detaching the second opening/closing lid 11 and both opening/closing lids 10, 11
The engagement and disengagement of the two members is performed by rotating the cylindrical body 1. That is, an outer engaging member (first
The engaging member) 15 is attached with a bolt 16,
On the lower surface of the end flange 17 of the discharge pipe 8, there is an annular intermediate engagement member 1 having an outer circumference formed with an arcuate outer recess 18 into which the inner protrusion 14 of the outer engagement member 15 can be inserted.
9 is attached with a bolt 20, and the inner protrusion 14 is installed in a predetermined range of the outer recess 18.
A first support piece 21 is provided which abuts and supports from below. Further, a first outer protrusion 22 is provided on the upper outer periphery of the second opening/closing lid 11, and the first outer protrusion 22 can be inserted into the inner circumference of the middle engagement member 19 facing the first outer protrusion 22. arc-shaped first
An inner recess 23 is formed, and a second support piece 24 is provided in a predetermined range of the first inner recess 23 to abut and support the first outer protrusion 22 from below. Further, a circular inner engaging member (second engaging member) 26 having a second outer protrusion 25 formed on the outer periphery is attached to the upper surface of the first opening/closing lid 10 with bolts 27, and 11 is formed with a circular recess 28 into which the inner engaging member 26 can be inserted, and an arcuate second inner recess 29 into which the second outer protrusion 25 can be inserted is formed on the inner peripheral surface of the recess 28. A third support piece 30 is provided in a predetermined range of the second inner recess 29 to abut and support the second outer protrusion 25 from below. and,
Furthermore, the widths of the inner protrusion 14, the first outer protrusion 22, and the second outer protrusion 25 are each set at the same central angle θ, and the width of the outer recess 18 is set at a central angle 3θ, which is three times the width of the above-mentioned central angle. The width of the second inner recess 29 is twice the center angle 2θ, and the width of the second inner recess 29 is twice the center angle 2θ.
The width of the support piece 21 is set to twice the center angle 2θ, and the widths of the second support piece 24 and the third support piece 30 are set to the same center angle θ as above. That is,
The outer engaging member 15 is 3θ with respect to the inner engaging member 15.
The inner engaging member 26 can rotate within a range of 2θ with respect to the second opening/closing lid 11, and the second opening/closing lid 11 can rotate within a range of 2θ with respect to the middle engaging member 19. Here, in FIG. 3, the cylindrical body 1
The side in the direction A of engagement with the discharge pipe 8 is referred to as one end side, and the side in the opposite direction B of disengagement is referred to as the other end side.
The mutual positional relationships of each protrusion, each recess, and each support piece are as follows. That is, the inner protrusion 14 and the second
The outer protrusion 25 is located on the same radius, the other end surface of the outer recess 18 and the other end surface of the first inner recess 23 are located on the same radius, and the first support piece 21 and the third support piece 30 are located on one end. The second support piece 24 is provided closer to the other end.
Therefore, as shown in FIG. 3, when the second opening/closing lid 11 is attached to the discharge pipe 8, that is, the second support piece 24 of the middle engagement member 19 on the discharge pipe 8 side is While the first outer protrusion 22 of the opening/closing lid 11 is engaged, the inner protrusion 14 of the outer engaging member 15 is fitted into the outer recess 18 of the middle engaging member 19 from below. At this time, the second
The outer protrusion 25 also fits into the second inner recess 2 of the second opening/closing lid 11.
9 from below. Next, from this state, as shown in FIG. 4, the cylindrical body 1 is rotated in the engagement direction A by an angle θ. Then, the inner protrusion 14 moves onto the first support piece 21,
The cylindrical body 1 will be engaged with the discharge pipe 8 side,
At the same time, the second outer protrusion 25 moves onto the third support piece 30, and the first opening/closing lid 10 and the second opening/closing lid 1
1 becomes engaged. Next, from this state, the cylindrical body 1 is further rotated by an angle θ in the engagement direction A, as shown in FIG. Then, the inner protrusion 14
slides on the first support piece 21 as it is, and the engagement state between the cylindrical body 1 and the discharge pipe 8 is maintained, and at the same time, the second opening/closing lid 11 is rotated toward one end by the second outer protrusion 25. As a result, the first outer protrusion 22 separates from the second support piece 24. In this state, the second opening/closing lid 11
is placed on the back of the first opening/closing lid 10, and when the first opening/closing lid 10 is opened downward, the second opening/closing lid 11 is also opened while being connected to the first opening/closing lid 10, and the discharge pipe 8 and the container are opened. It is communicated with the main body 2 via the cylindrical body 1. Also, by performing the reverse procedure to the above, the original state can be restored. Incidentally, in the drawings, only one of the above-mentioned engagement and disengagement mechanisms, that is, each protrusion, each recess, and each support piece, is shown, but a plurality of them are provided along the circumference, for example, four at 90° intervals. There is. Note that the cylindrical body 1
is rotatably supported via a thrust washer 32 on an annular support plate 31 bolted to the upper end of the connecting short pipe 4, and a lower part of the inside of the cylindrical body 1 has a structure for easily discharging powder. For this purpose, an inclined plate 33 is provided. Further, 34 is a holding member for the cylindrical body 1 attached to the annular support plate 31 side, 35 is a rotary sealing material provided between the bottom plate 3 and the annular support plate 31, and 36 and 37 are the first opening/closing lid 10. and a rotary sealing material attached to the middle engaging member 19, and 38 is a set screw for the lever 13.

In the above configuration, when transporting powdered radioactive material from one device to another, as shown in FIG. , connect by the procedure described above, namely by rotating. Next, the first opening/closing lid 10 is swung by the lever 13 to open the upper opening 9. At this time, since the second opening/closing lid 11 is also opened at the same time, the powder falls into the container body 2 via the discharge pipe 8 and the cylindrical body 1. After containing the powdered nuclear fuel material, the first opening/closing lid 10 is closed, and the cylindrical body 1 is rotated to engage the second opening/closing lid 11 with the discharge pipe 8 side, and the container body 2 is removed from the device 7. . Then, this container body 2 is transported to the other device 39, and the waste powder is transferred to the other device 39 side via the lower cylindrical body 1' by the same procedure as described above.
Note that both opening/closing lids 10 and 11 are sealed with sealing materials 36 and 37.
After the cylindrical body 1 is removed from the device 7, the upper surface of the first opening/closing lid 10 (outer surface of the container) and the lower surface (outer surface of the device) of the second opening/closing lid 11 are sealed with each other. There is no radioactive contamination due to this.

Effects of the Invention According to the above-mentioned configuration of the present invention, since the first engaging member which can be freely engaged and detached from the apparatus side is provided at the other end of the cylindrical body rotatably held in the transport container main body, the cylindrical body The transport container main body can be engaged with the equipment by simply rotating the cylindrical body, and the second opening/closing lid on the equipment side can be removed via the first opening/closing lid by rotating the cylindrical body, so the flanges can be bolted together like in the past. The work can be done easily and quickly compared to Further, since the first opening/closing lid is swung by a lever provided on the outside of the cylindrical body, the opening/closing operation thereof can be performed safely, and the structure of the opening/closing mechanism can be simplified. Furthermore, since both the opening and closing lids are close enough to be engaged and detached from each other using a sealing material, there is almost no space between the two opening and closing lids, so there is no dust scattered after the cylindrical body is detached, and there is no fear of contamination.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the present invention, in which FIG. 1 is an enlarged sectional view of the cylindrical body, FIG. 2 is a view taken along the - arrow in FIG. 1 is an enlarged view of the main parts at the - arrow position, FIGS. 4 and 5 are explanatory diagrams of the same operation, FIG. 6 is an explanatory diagram of the conveyance procedure, and FIG. 7 is an explanatory diagram of the conveyance procedure in a conventional example. . 1, 1'...Cylindrical body, 2...Transportation container main body, 7
... device, 8 ... discharge pipe, 10 ... first opening/closing lid,
11...Second opening/closing lid, 12...Support shaft body, 14...
...Inner protrusion, 15... Outer engagement member (first engagement member), 18... Outer recess, 19... Middle engagement member,
21...First support piece, 22...First outer protrusion, 2
3...First inner recess, 24...Second support piece, 25
...Second outer protrusion, 26...Inner engaging member (second engaging member), 29...Second inner recess, 30...Third
Support piece, 39...device.

Claims (1)

[Scope of utility model registration request] A transport container that transports objects from one device to another, one end of which is a cylindrical body that is rotatably held in the main body of the transport container, and the other end of which is attached to and disengages from the device by rotation of the cylindrical body. A first engaging member is provided which is freely movable; is swingably provided, and is held on the device side so as to be rotatable about the same axis as the rotational axis of the cylindrical body, and is connected to a second opening/closing lid that is detachable from the device side at a predetermined rotational position. A transport container with a contamination spread prevention mechanism, characterized in that a removable second engaging member is provided on the outer surface of the first opening/closing lid, and a lever is provided for rotating the support shaft from outside the cylindrical body. .