JP3100508B2 - Seal structure and seal member for joint of sealed container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure and a seal member of a joint portion of a sealed container for handling a radioactive substance in a closed environment in a process such as production and reprocessing of nuclear fuel.

[0002]

2. Description of the Related Art Conventionally, in order to safely handle radioactive materials such as nuclear fuel, radioactive materials contained in a sealed container are sealed in a closed space (hereinafter, referred to as a cell) isolated from the external environment. It is being handed over. As means for this, for example, Japanese Patent Publication No. 59-40715
Gazette, Japanese Patent Publication No. 62-13547, Japanese Utility Model Publication No. 63-
A so-called double cover system as disclosed in Japanese Patent Publication No. 31039 or the like is employed.

In this double cover system, as shown in FIG. 5, a cell 1 is provided with a lid 2 (hereinafter, referred to as a cell lid) which opens toward the inside of the cell 1, and a sealed container 3 is provided with an outer side. An open lid 4 (hereinafter referred to as a container lid) is provided. The lids 2, 4 are provided so as to close the openings 5a, 6a of the flanges 5, 6 provided in the cell 1 or the sealed container 3, respectively.

[0004] The flange 6 of the sealed container 3 whose opening 6 a is closed by the container lid 4, and the flange 5 of the cell 1 whose opening 5 a is also closed by the cell lid 2. , And the sealed container 3 is
When the lids 2 and 4 are rotated relative to each other, the lids 2 and 4 are connected to each other by a connection structure (not shown) provided on the mating surface of the lids 2 and 4. In this state, the flanges 5 and 6 are connected and fixed to each other, and the connected lids 5 and 6 are removed from the inside of the cell 1 so that the space in the cell 1 and the space in the sealed container 3 communicate with each other. Will be forced to do so. In this state, after the operation of storing the radioactive substance from the inside of the cell 1 into the sealed container 3 by remote operation, the openings 5a of the flanges 5.6 of the cell 1 and the sealed container 3 are again opened by the two lids 5.6. 6a is closed in an airtight state, the engagement of the connection structure is released, and the cell 1 and the sealed container 3 are detached.

Thus, the cell lid 2 and the container lid 4
When engaging and disengaging, the flanges 5 and 6 are rotated relative to each other in a state where the flanges 5 and 6 are pressed against each other because it is necessary to seal between the flanges 5 and 6. Therefore, in this case,
It is necessary to strictly realize the parallelism between the cell 1 and the sealed container 3. That is, when the strict parallelism between the two is not achieved, there is a problem that an unreasonable load acts on the connecting structure or that the flanges 5 and 6 are mutually rubbed to cause seizure (galling).

Conventionally, in order to solve such a problem, for example, as shown in Japanese Utility Model Publication No. 4-4439 (see FIG. 6), a glass fiber-containing fluorine tetrachloride A structure in which a sliding material 7 for lubrication such as a system material is welded has been considered. However, due to this welding operation, there is a problem that the manufacturing process of the sealed container becomes extremely troublesome and complicated.

The cell 1 connected as described above
In addition, the inside of the sealed container 3 is in a communication state with being severely shut off from the external environment, and it is possible to take out and put in the sealed container 3 by remote control. However, when the operation is completed, the cell 1 and the sealed container 3 are separated, that is, when the flanges 5 and 6 and the lids 2 and 4 are separated from each other, the radioactive material is disposed in the cell 1 during the operation. Must be sealed so that the parts exposed to the air are not exposed to the external environment.

Conventionally, in order to satisfy the above requirements, the opening 5a of the flange 5 of the cell 1 and the flange 6 of the sealed container 3
Opening 6a is formed in a tapered inner surface shape, and both flanges 5.
When 6 are combined, a single tapered inner surface is formed. On the other hand, the lids 2 and 4 inserted into the openings 5a and 6a, respectively, also have the peripheral surfaces thereof covered with the openings 5a and 6a.
6a is formed so as to form a single tapered outer surface when both lids 2 and 4 are connected to each other. In order to form these tapered surfaces, extremely precise processing accuracy is required.

[0009]

However, as a result of the above construction, sharp edges are formed in the openings 5a and 6a and the lids 2 and 4, and the sharp edges are formed. As a result, the inconvenience of safety during handling may be reduced. In order to solve this problem, as shown in FIG.
An extremely fine chamfering process of, for example, about 0.1 mm is performed. However, in the case where the chamfered portion 8 is formed in this way, even if the size is extremely fine, the space formed by the chamfered portion 8 has a radioactive contaminant as shown in FIG. And the radioactive substance may leak out of the cell 1 and the sealed container 3.

In addition, between the flanges 5 and 6,
With the lids 2 and 4 removed, a sealing member 9 made of a material such as silicon rubber is provided so that the space inside the cell 1 and the sealed container 3 is airtightly closed to the outside space. Is provided, but this sealing member 9 is provided.
As a result, there is a disadvantage that the contaminants accumulated in the chamfered portion 8 are diffused.

That is, as shown in FIG. 9, the sealing member 9 is provided on the periphery of the opening 6 a of the flange 6 of the sealed container 3, and has two lips 9 a abutting on the flange 5.
9b, on the other hand, the opening 6 is sandwiched between the lid 4 fitted into the opening 6a and the peripheral wall of the opening 6a.
a can be closed in an airtight state. A sealing member 9 similar to the above is also provided on the periphery of the cell lid 4 to seal the space between the cell lid 4 and the opening 5a of the flange 5 of the cell 1 in an airtight state. I have.

These seal members 9 are formed such that the length of the lip 9a disposed on the outermost periphery is longer than the lip 9b disposed on the inner side, and when the flanges 5 and 6 approach each other to a certain distance, As shown in FIG. 9 (a), the outer lip 9a is in contact with the flange 5 surface to seal between them. Therefore, the lip 9a
By being largely elastically deformed by the flange 5, a sufficient close contact state with the flange 5 surface can be achieved.

However, with the sealing member 9 having the lip 9a having the above structure, when the state in which the pressing is released by the flange 5 shifts to the state in which the pressing is released, that is, when the flange 6 of the sealed container 3 is When moving in a direction away from the outer lip 5, as shown in FIG. 9B, the space disposed inside the lip 9a becomes more negative than the external space, and the outer lip 9a expands and deforms. Try to keep the sealing effect. Therefore, when the flange 6 of the sealed container 3 is separated from the flange 5 of the cell 1 by a predetermined distance, and the sealing state of the seal member 9 is broken, the pressure difference between the inside and outside of the seal member 9 causes the air to be forced from the external space. Well sucked. As a result, there is an inconvenience that contaminants such as radioactive substances locally limited to the chamfered portion 8 near the seal member 9 are diffused over a wide range on the container lid 4.

A device for solving the above-mentioned inconvenience has been proposed in, for example, Japanese Utility Model Publication No. 63-40691. However, according to these methods, the structure of the sealing member becomes complicated, and a problem arises that a new pool of contaminants is formed.

The present invention has been made in view of the above circumstances, and aims to improve the handling safety of a lid in a double cover system and to prevent leakage of contaminants and the like from inside a cell. It is an object of the present invention to provide a seal structure and a seal member of a sealed container connecting portion that can be formed.

[0016]

In order to achieve the above object, the present invention provides a sealed container flange whose opening is closed by a container lid that opens outward, and a cell lid that opens inward. At the connection portion with the flange of the cell having the closed opening, provided on the periphery of the cell lid,
While sealing between the cell lid and the opening of the cell flange, the cell lid and the container lid are integrally connected by being relatively rotated in a close contact state. A sealing member for a cell, which is provided on the periphery of the opening of the flange of the sealed container, between the flange of the sealed container and the flange of the cell, and the opening of the flange of the sealed container and the container lid; A container sealing member that seals the space between the cell lid and the connection between the cell lid and the container lid, between the flange surface of the cell and the flange surface of the sealed container that is relatively rotated at the time of separation. The present invention proposes a sealing structure of a joint portion of a sealed container in which a sliding member for lubrication is provided and the sliding member for lubrication is attached to a flange surface of a cell.

In the above-mentioned sealing structure, a chamfered portion is provided on each of the peripheral edge of the container lid and the peripheral edge of the opening of the flange.
It is effective if the chamfered portion is provided with a covering portion that covers the space formed by chamfering by covering the chamfered portion in close contact.

The present invention also relates to a sealed container flange having an opening closed by an outwardly opening container lid and a cell flange having an opening closed by an inwardly opening cell lid. A sealing member disposed at the connecting portion, for sealing between the flanges, between the lids, and between the flanges and the lid, provided on the periphery of the opening of the flange of the sealed container, the flange and the A container sealing member for sealing between the container lid and between the flange and the cell flange, provided on a peripheral edge of the cell lid, the cell lid and the container lid; And a cell sealing member for sealing between the cell lid and the opening of the cell flange, wherein the container sealing member and the cell sealing member are provided with the container lid and the cell flange. On the periphery of the opening To provide a sealing member for a sealed container connecting portion having a covering portion for covering a chamfered portion to be in close contact with each other and forming a flat connecting surface at a boundary position between each lid and an opening of each flange. I have.

[0019]

According to the sealing structure of the connecting portion of the sealed container according to the present invention, the cell sealing member provided on the peripheral edge of the cell lid allows the space between the cell lid and the opening of the cell flange and the cell. The space between the container lid and the container lid is sealed. Further, the container sealing member provided on the periphery of the opening of the flange of the sealed container seals the space between the flange of the sealed container and the cell flange, and the space between the opening of the flange of the sealed container and the container lid. Is done.

In this case, when the lid for the cell and the lid for the container are integrally connected, the flange surface of the sealed container and the flange surface of the cell, which are relatively rotated in close contact with each other. Since the sliding member for lubrication is provided between the two, the direct friction between the two flange surfaces is avoided, and the occurrence of seizure or the like due to the friction between the two is avoided.
Further, since the lubricating sliding member is attached to the flange surface of the cell, it is possible to standardize a plurality of hermetically sealed containers which are brought into contact with and separated from the cell,
The manufacturing process of the sealed container is simplified, and the number of manufacturing steps is reduced.

In such a sealing structure, if the chamfers are provided on the periphery of the container lid and the periphery of the opening of the flange, safety in handling these members is improved. Further, in the chamfered portion formed in this way, a covering portion provided on the container sealing member and the cell sealing member is arranged so as to cover the space formed by the chamfering by covering in a tight state. Therefore, the formation of a pool of the substance in the cell is avoided, and the diffusion of the substance to the external environment is prevented.

Further, according to the sealing member for a sealed container according to the present invention, the space between the flange of the sealed container and the container lid is sealed by the container sealing member provided on the periphery of the opening of the flange of the sealed container. The gap between the container flange and the cell flange is sealed, and the covering portion covers the chamfered portion provided on the peripheral edge of the container lid in a tight state, so that the opening of the container lid and the flange of the sealed container is opened. The connecting surface at the boundary position with the part is formed flat. Further, by the cell sealing member provided on the periphery of the cell lid, between the cell lid and the container lid and between the cell lid and the opening of the cell flange are sealed, The covering portion covers the chamfer at the periphery of the opening of the cell flange in a tight state, so that the connection surface at the boundary between the cell lid and the opening of the cell flange is formed flat. As a result, the cell lid and the container lid, which are interconnected, can make the connection surfaces formed flat to be in close contact with each other, and serve as a reservoir for the substance in the cell between both connection surfaces. The formation of such a space is avoided.

[0023]

1 to 4 show an embodiment of a seal structure and a seal member of a joint portion of a sealed container according to the present invention.
This will be described with reference to FIG. In each of these figures, FIG.
9 will be denoted by the same reference numerals in common with the conventional example shown in FIG. The sealing structure of the connecting portion of the sealed container 3 according to the present embodiment is also provided between the two lids 2.4 in the double cover system, and the openings of the lids 2.4 and the cell 1 and the flanges 5.6 of the sealed container 3. This is common to the conventional example in that the space between the first and second members 5a and 6a is sealed. However, the seal structure and the seal member 20 according to the present embodiment
Is different from the conventional example in the shape of the lip and the like.

As shown in FIG. 1, the sealing structure according to the present embodiment includes a container sealing member 21 arranged on the periphery of the opening 6a of the flange 6 of the sealed container 3 and a periphery of the cell lid 2. Sealing member 22 for cell and flange 5 of cell 1
And a lubricating sliding member 23 provided on the surface. As shown in FIG. 2, the container sealing member 21 includes an inter-flange seal portion 21 a disposed along the flange 6 surface of the sealed container 3 and an opening seal disposed within the opening 6 a of the sealed container 3. And is fixed to the sealed container 3 in a state of being fitted into a groove 6b provided on the periphery of the opening 6a of the flange 6.

The flange-to-flange seal portion 21a is provided with two stripes of lips 21c and 21d provided over the entire circumference at intervals in the radial direction. This lip 21c
21d is formed closer to each other with a smaller interval dimension than the conventional lips 9a and 9b, and has a shorter length dimension. Thereby, when the sealed container 3 is brought close to the flange 5 of the cell 1, both the lips 21c and 21d simultaneously contact the flange 5 surface of the cell 1 to seal the inside thereof.
When the lip 21c is separated from the flange 5 of the cell 1, the lips 21c and 21d are simultaneously separated from the surface of the flange 5 of the cell 1 so that the sealed state can be immediately released.

The opening sealing portion 21b has a sealing surface formed in a tapered inner surface which is brought into close contact with the peripheral surface of the container lid 4 formed in a tapered outer surface.
Further, in the container sealing member 21 according to the present embodiment, chamfers formed on the peripheral edge of the container lid 4 are formed at corners disposed between the inter-flange sealing portion 21a and the opening sealing portion 21b. A covering portion 21e for covering the portion 8 is formed.

The covering portion 21e has an outer surface shape which is in close contact with the outer surface of the chamfered portion 8 of the container lid 4. The chamfered portion 8 is formed in, for example, a convex shape having a small radius, and the covering portion 21e is formed in a concave shape having the same dimension as the radius or slightly smaller than the radius and closely contacting the chamfered portion 8 by elastic deformation. Have been. Note that the shape of the chamfered portion 8 is not limited to such a curved surface shape, and may be an ordinary planar shape. The covering portion 21e completely fills the space formed by the chamfering so that the connecting surface 24 at the boundary between the container lid 4 and the opening 6a of the flange 6 of the sealed container 3 is formed flat. Has become.

As shown in FIG. 3, the cell sealing member 22 has a structure substantially equivalent to that of the container sealing member 21. That is, while having the seal part 22a between lids arrange | positioned along the end surface of the cell lid 2, and the opening seal part 22b arranged along the peripheral surface of the cell lid 2, they are provided. The corner portion disposed between the two has a covering portion 22c for covering the chamfered portion 8 formed on the peripheral edge of the flange 5 of the cell 1.

The covering portion 22c is also provided on the flange 5 of the cell 1.
Has an outer surface shape that closely fits the outer surface of the chamfered portion 8. The connection surface 25 at the boundary between the flange 5 of the cell 1 and the cell lid 2 is formed flat by completely filling the space formed by the chamfering.

The lubricating sliding member 23 is a ring-shaped member made of a material having an appropriate surface strength and excellent sliding properties, for example, a tetrafluoroethylene resin, a copper alloy, an aluminum alloy or the like. It is mounted on the flange 5 surface of the cell 1 disposed radially outward of the cell sealing member 22 with a uniform thickness. Thus, the lubricating slide 3 is sealed in a state where the flange 5 of the sealed container 3 brought close to the flange 5 of the cell 1 is sealed between the flange 5 of the cell 1 and the lips 21a and 21b of the sealing member 21 for the container. It is brought into contact with the material 23.

Since the pressing force acting between the flanges 5 and 6 is received by the sliding member 23 for lubrication, even when the flanges 5 and 6 are relatively rotated when the lids 2 and 4 are connected to each other. In addition, the occurrence of seizure between the flanges 5 and 6 and the excessive force acting on the seal member 20 are avoided. Further, in this embodiment, since the lubricating sliding member 23 is welded to the surface of the flange 5 of the cell 1, the lubricating sliding member 23 is applied to the plurality of sealed containers 3 sequentially connected to the flange 5 surface. The material 23 can be shared. Therefore, the manufacturing process of the sealed container 3 can be simplified, and the equipment cost can be reduced.

The operation of the sealing structure of the connecting portion of the hermetically sealed container 3 according to the present embodiment thus configured will be described below with reference to FIG. First, the sealed container 3 in which the opening 5a of the flange 5 is closed by the container lid 4 and the cell 1 in which the opening 6a of the flange 6 is closed by the cell lid 2 are arranged at positions separated from each other. 4A shown in FIG. In this state, the opening seal portion 21b of the container sealing member 21 fixed to the sealed container 3 is arranged in close contact with the peripheral surface of the container lid 4, and the opening 6a of the flange 6 is airtight. It is closed. On the inner peripheral surface of the opening 5a of the flange 5 of the cell 1, an opening sealing portion 22b of a cell sealing member 22 fixed to the cell lid 2 is disposed in close contact. The opening 5a is also closed in an airtight state.

Further, in this state, the container sealing member 2
The first covering portion 21e covers the chamfered portion 8 of the container lid 4 and is formed flat so that no dent is formed in the connection surface 24 with the cell 1 in that portion. Similarly, the covering portion 22c of the cell sealing member 22 is also formed flat so as to cover the chamfered portion 8 of the opening 5a of the cell 1 and not to form a dent in the connection surface 25 with the sealed container 3 at that portion. It is supposed to.

Next, the flange 5 of the cell 1 closed in this way and the flange 6 of the sealed container 3 are brought close to each other and connected to each other as shown in FIG. In this case, the inter-flange seal portion 21 a of the container sealing member 21 disposed on the flange 6 surface of the sealed container 3 first contacts the flange 5 surface of the cell 1. Seal part 21 between flanges
Since two lip portions 21c and 21d are provided in a, the tips of the lip portions 21c and 21d come into contact with the flange 5 surface of the cell 1 so that the inside is closed in an airtight state. In addition, the inter-lid seal portion 22a of the cell sealing member 22 disposed on the end face of the cell lid 2 is brought into close contact with the end face of the container lid 4, so that the space between the lids 2 and 4 is airtightly closed. Is done.

Then, the flange 5 of the cell 1 and the sealed container 3
When the flange 6 of the cell 1 is further approached, the sliding member 23 for lubrication provided on the surface of the flange 5 of the cell 1 is closed.
, And receives a pressing force for pressing the sealed container 3 against the cell 1. Since the lubricating sliding member 23 is formed in a flat plate shape having a uniform thickness, the flanges 5 and 6 are held with a parallel space therebetween. Therefore, the lids 2 and 4 are maintained in a connectable state only by being rotated relative to each other. By rotating the sealed container 3 with respect to the cell 1, the lid 2 for the cell is closed. And the container lid 3 are connected to each other.

In this case, since the flanges 5 and 6 are not directly rubbed against each other, even if the lids 2 and 4 are relatively rotated at the time of connection, the occurrence of seizure on the surfaces of the flanges 5 and 6 is prevented. be able to. Also, the lips 21c and 21d of the container sealing member 21 are kept in the minimum necessary pressing state for sealing between the flanges 5 and 6 and are rubbed against the flange 5 surface of the cell 1; It is maintained in a healthy state for a long time without applying pressure.

Next, with the flanges 5 and 6 fastened to each other, the connected lids 2 and 4 are removed from the inside of the cell 1 by remote control from inside the cell 1 as shown in FIG. Inside the cell 1 and the sealed container 3 in a state sealed from the outside
To communicate with the inside. Since the lids 2 and 4 are connected in a sealed state by the cell sealing member 22, the lids 2 and 4 are held so that contaminants do not enter between the lids 2 and 4. Then, after the contaminants such as radioactive substances in the cell 1 are stored in the sealed container 3, the flanges 5 of the cell 1 are connected by the lids 2 and 4 in the connected state according to the reverse procedure.
Opening 5a and opening 6 of flange 6 of sealed container 3
a is simultaneously closed in a sealed state.

In this case, the container sealing member 21 and the cell sealing member 22 are respectively provided with the covering portions 21e and 2e.
2c is provided, and when the cell lid 2 and the container lid 4 are fitted into the openings 5a and 6a, respectively, the respective covering portions 21e and 22c become the chamfered portions 8 of the cell lid 2 and It is arranged so as to be in close contact with the chamfered portion 8 of the flange 5 of the cell 1 to fill a space formed near the chamfered portion 8. As a result, radioactive substances and the like from inside the cell 1 are eliminated from the vicinity of the connection surfaces 24 and 25 between the lids 2 and 4 or between the flanges 5 and 6. Therefore, lids 2.4
And the connection between flanges 5 and 6 is released and cell 1
Even if the sealed container 3 is cut off from the flange 5, no radioactive substance is attached to the vicinity of the connecting portions 24 and 25, so that diffusion of the radioactive substance to the external environment can be prevented.

Further, the sealed container 3 is connected to the flange 5 of the cell 1.
According to the seal member 20 of the present embodiment, the gap between the lips 21c and 21d is suppressed to be small and the length thereof is also short in the process in which the distance between the flanges 5 and 6 is increased due to the separation. , Lip 21c ・ 21
The tip of d is immediately cut off from the flange surface 5 of the cell 1 to release the sealed state between the flanges 5 and 6. Therefore, the inside of the lips 21c and 21d is prevented from being in a high negative pressure state, and the generation of an air flow that blows away the radioactive material sticking to the lids 2 and 4 is avoided. As a result, even if a small amount of radioactive material is
Even if the radioactive material is adhered to, for example, the radioactive substance can be prevented from diffusing into the external environment.

The seal structure and the seal member according to the present invention are not only used in a sealed container connecting portion for handling a radioactive substance in a sealed environment, but also for chemicals that need to be handled in a sealed environment. It may be used for a sealed container connection part for use (a field of toxic substances requiring safety management, a field of biotechnology requiring a sterile environment, etc.).

[0041]

As described in detail above, the sealing structure of the joint portion of the sealed container according to the present invention includes the sealing member for the cell provided on the periphery of the lid for the cell, and the sealing structure for the opening of the flange of the sealed container. Since the container has a sealing member provided and a sliding member for lubrication is provided between the flange surfaces of the cell and the sealed container, and the sliding member for lubrication is attached to the flange surface of the cell, It is possible to prevent seizure of the flange surface during relative rotation and to use a common lubricating sliding material for a plurality of sealed containers, thereby simplifying the manufacturing process of the sealed container. This has the effect that it can be performed. As a result, the man-hour required for manufacturing the sealed container can be reduced, and the equipment cost including the cell can be reduced.

In the above-mentioned sealing structure, a chamfered portion is provided on each of the periphery of the lid for the container and the periphery of the opening of the flange, and the sealing member for the container and the sealing member for the cell cover the chamfered portion in close contact. If the structure is provided with a covering portion that fills the space formed by chamfering, the material in the cell is removed from the space filled by the covering portion, and the material remains in the cell even after the lids are separated. In addition, there is an effect that diffusion to the outside of the sealed container can be prevented.

Further, the sealing member of the sealed container connecting portion according to the present invention includes a container sealing member provided on the periphery of the opening of the flange of the sealed container, and a cell sealing member provided on the periphery of the cell lid. These sealing members cover the chamfered portions provided on the periphery of the opening of the container lid and the flange of the cell in a tight state, and the connecting surface at the boundary position between each lid and the opening of each flange. Has a coating portion that forms a flat surface, so that the flat connection surfaces are brought into close contact with each other to achieve a reliable sealing state, and the effect that substances in the cells in the vicinity of the chamfered portion can be prevented from adhering. To play.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a sealing structure of a sealed container connecting portion according to the present invention.

FIG. 2 is a longitudinal sectional view showing a container side sealing member used in the sealing structure of FIG.

FIG. 3 is a longitudinal sectional view showing a cell side sealing member used in the sealing structure of FIG. 1;

FIG. 4 is a longitudinal sectional view showing a lid opening / closing step for explaining the operation of the seal structure of FIG. 1;

FIG. 5 is a schematic diagram for explaining a double cover method.

FIG. 6 is a longitudinal sectional view showing a conventional example of a sliding member for lubrication.

FIG. 7 is a longitudinal sectional view showing a chamfered portion provided on a flange and a lid to avoid a sharp edge.

FIG. 8 is a longitudinal sectional view showing a state where a substance accumulation area in a cell is formed in the chamfered portion in FIG. 7;

FIG. 9 is a longitudinal sectional view for explaining the operation of a conventional sealing member.

[Explanation of symbols]

 Reference Signs List 1 cell 2 cell lid 3 sealed container 4 container lid 5 flange 5a opening 6 flange 6a opening 8 chamfered portion 20 sealing member 21 container sealing member 21e / 22c covering portion 22 cell sealing member 23 lubrication slide Moving material 24/25 Connecting surface

──────────────────────────────────────────────────続 き Continuing on the front page (72) Kenichi Yabuki, Inventor Kenichi Yabuki 1-38-9, Niihashi-Kakigashi-cho, Chuo-ku, Tokyo Mitsubishi Materials Corporation Reprocessing Facility Construction Center (72) Inventor Mamoru Uchino, Nihonbashi, Chuo-ku, Tokyo 1-38-9 Kashikashi-cho Mitsubishi Materials Corporation Reprocessing Facility Construction Center (72) Inventor Hiroshi No Isshiki 1-6-14 Edobori, Nishi-ku, Osaka-shi, Osaka Hitachi Zosen Corporation (72) Inventor Hashimoto Tetsuji 2-1-2, Kuse-Terashima, Amagasaki-shi, Hyogo Prefecture Inside Kimura Kakoki Co., Ltd. 2-264897 (JP, A) JP-A-3-152498 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G21F 5/00 G21F 5/12 G21F 7/047

Claims (3)

(57) [Claims] At a connection portion between a flange of a sealed container whose opening is closed by a container lid that opens outward and a flange of a cell that has an opening closed by a cell lid that opens inward, A cell provided on the periphery of the cell lid, sealing between the cell lid and the opening of the cell flange, and integrally connected by being relatively rotated in a close contact state A cell sealing member for sealing between the lid for the container and the lid for the container, provided on the periphery of the opening of the flange of the sealed container, between the flange of the sealed container and the flange of the cell, and the sealed container A container sealing member for sealing between the opening of the flange and the container lid, and a cell flange which is relatively rotated when the cell lid and the container lid are connected and separated. Face and seal A seal structure for a joint of a sealed container, wherein a lubricating sliding material is provided between the container and a flange surface of the container, and the lubricating sliding material is attached to the flange surface of the cell. 2. A chamfered portion is provided on each of the periphery of the container lid and the periphery of the opening of the flange, and the container sealing member and the cell sealing member are formed by chamfering by covering the chamfered portion closely. 2. The sealing structure for a joint of a hermetically sealed container according to claim 1, further comprising a covering portion for filling the space. 3. A connection portion between a flange of a sealed container whose opening is closed by a container lid that opens outward and a flange of a cell that has an opening closed by a cell lid that opens inward. A sealing member for sealing between the flanges, between the lids, and between the flanges and the lid, provided on the periphery of the opening of the flange of the sealed container, the flange and the lid for the container. And a container sealing member for sealing between the flange and the cell flange, provided on the periphery of the cell lid, between the cell lid and the container lid, and A cell sealing member for sealing between the cell lid and the opening of the cell flange, wherein the container sealing member and the cell sealing member are formed of the container lid and the opening of the cell flange. Chamfers provided on the periphery A sealing member for connecting the hermetically sealed container, wherein the sealing member is provided in such a manner that the cover portion is covered in close contact with each other to form a flat connecting surface at the boundary position between each lid and the opening of each flange.