JPH0330880Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of application of the invention) This invention relates to a container for storing radioactive substances or harmful substances, and more specifically to a self-sealing type airtight container that can be safely and reliably sealed by remote control. It is.

(Prior Art) In facilities that handle radioactive substances or hazardous substances that cause harmful effects when exposed to the outside atmosphere, the work of storing these substances in containers is performed by remote control from the viewpoint of safety. In such cases, conventionally, a drop-in type sealed container is used, in which a plug is fitted into the opening of the container through a packing, but this type has an extremely small amount of pressure, which only uses the weight of the plug itself to hold down the packing. Only a seal was obtained, and therefore, when the internal pressure rose due to the heat of reaction of the contents, the plug was pushed up, the seal was broken, and the contents spouted out, which was very dangerous. Various techniques have been proposed to improve the sealing performance of conventionally used sealed containers, but all of them are done by remote control, requiring expensive and complicated equipment and facilities.
It is also difficult to handle.

(Problems to be solved by the invention) The present invention was created in view of the current situation, and it solves the above-mentioned problems by improving sealing performance, ensuring safety, and making remote control easier. The objective is to provide a self-sealing sealed container that satisfies both requirements and is easy to manufacture and inexpensive.

(Means for Solving the Problems) The present invention will be described below with reference to embodiments and drawings.

A hanging part 2 is provided at the top of the plug 1, and can be hung by remote control using a separately prepared grip. Further, one ends of four links 3 are attached at equal intervals to the lower center portion of the link 3 by pins 4 so as to be rotatable in the radial direction. The number of links 3 is not particularly limited to four, and two or more links may be attached at equal intervals. As will be described later, this link 3 is connected to the key-shaped piece 9 of the plug receiver 5, inserted into the opening 13 of the container body 12, and lowered, so that the longitudinal side of the rotated link 3 is connected to the key-shaped piece 9 of the plug receiver 5. The hook-shaped piece is formed so that it becomes vertical when it comes into contact with the top of the bottom and becomes horizontal.

The plug receiver 5 is a bottomed cylinder having an opening for accommodating the plug 1 and the link 3 at the upper part, and the bottom surface is a disc that serves as a sealing surface for the packing, and an annular packing 6 is attached to the lower peripheral edge of the plug receiver 5. . In addition, the same number of slits 7 as the links 3 are bored in the side wall of the plug receiver 5 at equal intervals in the axial direction, and within these slits are hook-shaped pieces 9 having claws 8 projecting outwardly. The end portion on the 8 side is attached by a pin 10 so as to be rotatable inward in the radial direction from a vertical position. When installing, the hook 8 is configured so that when the hook-shaped piece 9 is vertical, the claw 8 protrudes from the outer surface of the plug receiver 5, and is pulled into the slit as the hook-shaped piece rotates inward. . Furthermore, a key-shaped piece 9
The other end is connected to the end of the link 3 by a pin 11.

The container body 12 is a bottomed container, and the upper part is provided with a plug receptacle 5 and an opening 13 for accommodating the plug 1, and the side wall thereof has a packing contact part 14 that contacts the packing 6 to seal the container, and a key-shaped part. Piece 9
The same number of pawl contact parts 15 that engage with the pawls 8 are provided. 16 indicates a storage chamber.

(Function) When the plug 1 connected to the plug receiver 5 is lifted by a separately prepared lifting device, inserted into the opening 13 of the container body 12, and lowered, the packing 6 first touches the packing contact portion 14 of the container body 12. At this point, the plug receiver 5 stops there. When the plug 1 is lowered further, the plug 1 is inserted into the plug receiver 5, and as the plug 1 is lowered further, the hook-shaped piece 9 is pushed by the link 3 and rotates in the radial direction about the pin 10. When the bottom of the plug 1 approaches the bottom plate of the plug receiver 5, the claw 8 of the hook-shaped piece 9 hits the claw contact portion 15 of the opening 13 of the container main body.

As the plug 1 is further lowered, the horizontal force exerted on the link 3 by its own weight gradually increases. A lever action force is applied due to the ratio, and the rotational force of the pawl 8 increases significantly.

Therefore, after the pawl 8 hits the pawl abutment part 15, the pawl 8 further rotates, slightly lowers the plug receiver 5, crushes the packing 6, and engages the pawl 8 with the pawl abutment part 15.

That is, when the longitudinal side of the link 3 and the bottom plate of the plug receiver 5 come into contact and the link 3 becomes horizontal, the rotational force of the key-shaped piece 9 becomes maximum and the pawl 8 is completely engaged with the pawl contact portion 15. At this time, the packing has the maximum crushing force and amount, so the sealing performance is extremely good.

In addition, when releasing the seal, if the hanging part 2 is lifted up with a grip, the hook-shaped piece 9 will rotate in the radial direction about the pin 10 via the link 3, and the claw 8 will separate from the claw contact part 15. Therefore, the seal is easily broken.

(Effect of the device) As is clear from the above explanation, according to the present device, even if the internal pressure increases due to the heat of reaction of the stored contents, the upward force is applied to the claw contact portion 15. Since the claw 8 prevents the seal from being broken, it is extremely safe. In addition, the container of the present invention can be remotely controlled using only a simple hanging device, and the structure is simple and can be manufactured at low cost regardless of the size, weight, shape, etc. of the container.

Therefore, not only in the general industrial field that handles hazardous substances, but also in the nuclear power sector in particular, perfect remote operability, sealability, safety, etc. are required when transporting radioactive materials, etc. into and out of transport containers.
The container of the present invention is extremely effective.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment for explaining the present invention, FIG. 2 is a plan view of the key-shaped piece, and FIG. 3 is a partially cutaway front view showing a state in which packing is started by the plug. FIG. 4 is a partially cutaway front view showing the container in a sealed state. 1...Plug, 2...Hanging part, 3...Link,
5... Plug receiver, 6... Packing, 7... Slit, 8... Claw, 9... Key-shaped piece, 12... Container body, 13... Opening, 14... Packing contact part, 15... Claw contact part.

Claims (1)

[Scope of utility model registration request] A hanging part 2 is provided at the upper part, a plug 1 having one end of a plurality of links 3 pivoted at equal intervals in the lower center part so as to be rotatable in the radial direction, and an opening in the upper part for accommodating the plugs and the links. It is made of a bottomed cylinder with an annular packing 6 attached to the lower periphery of the bottom surface, and the same number of slits 7 as the links 3 are bored in the axial direction at equal intervals in the side wall of the cylinder. The head of a hook-shaped piece 9 having a claw 8 protruding from the top is pivoted so as to be rotatable in the radial direction, and when the hook-shaped piece is vertical, the claw 8 protrudes from the outer surface and as it rotates inward. It has a plug receiver 5 formed so that the claw can be drawn into the slit, and an opening 13 for accommodating the plug 1 and the plug receiver 5. On the side wall of the opening, there is a contact part 14 of the packing 6 and a plug receiver 5 formed so that the claw can be drawn into the slit. It consists of a bottomed container provided with a claw contact part 15 to which the hook 8 of the hook-shaped piece is engaged, and the link 3 and the hook-shaped piece 9 are connected to each other.
After rotatably connecting the ends of the container, it is lifted up, inserted into the container opening 13 and lowered, and the packing 6 comes into contact with the packing abutting part 14, sealing the container, and the link 3 becomes horizontal and the claw 8 touches the claw abutting part 15. A self-sealing sealed container characterized by being configured to be locked.