JP4368147B2 - Drum canning method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drum canning method and apparatus for melting and reducing low-level radioactive waste generated from, for example, a nuclear facility and canning and storing the drum.
[0002]
[Prior art]
Low-level radioactive waste generated from nuclear facilities is melted and reduced in volume, and cooled solidified (insert) is packed in drums and stored for a long time.
[0003]
In this drum can, in order to increase the disposal efficiency of radioactive waste, the gap between the inner peripheral surface of the drum can and the outer peripheral surface of the insert is made as narrow as possible. The gap is about 4 mm to 12 mm in consideration of the manufacturing tolerance of the insert and the drum. And since the weight of the melted insert is considerably heavy and is performed by remote control, the top of the insert cannot be lifted by hook or vacuum suction, and the gap is narrow, so the outer circumference of the insert It is difficult to hold the surface with a holder and insert it into the drum.
[0004]
Therefore, conventionally, the method disclosed in Patent Document 1 is a method in which the top of the insert is turned upside down, and the drum can is covered from the top, and then the drum can is turned upside down to return to the original position. Patent Document 2 discloses a method in which a drum can is installed at an angle and an insert is slid and inserted. All of these methods have the problem that the handling equipment is complicated and large, and the cost is high.
[0005]
In order to solve this problem, the inventors have developed a drum canning device that utilizes the pressure increase of air in the drum when the insert is inserted into the drum. However, an elevating device using this air pressure has already been disclosed. In the pneumatic lifting device disclosed in Patent Document 3, when the elevator on the first floor is raised to the third floor, the first, second and fourth floor open valves are closed, and the third floor open valve is opened. The air is blown into the lower space of the lifting platform with a blower to increase the pressure, and the lifting platform is lifted. When the elevator reaches the third floor, air is released from the third floor exhaust pipe to the outside, and the elevator is stopped on the third floor.
[0006]
Next, the elevating device disclosed in Patent Document 4 is provided with a vertical air chamber in which the carriage can be moved up and down, so that air can be supplied to or discharged from the air chamber. This is a technology in which an object to be lifted is placed directly or indirectly on a carriage in an air chamber. And the sealing material is interposed between the outer peripheral surface of the carriage and the inner peripheral surface of the air chamber to facilitate the vertical movement of the carriage. Moreover, the raising / lowering device using the gas pressure disclosed by patent document 5 has a sealing material interposed between the inner peripheral surface side of the cart guide cylindrical chamber and the outer peripheral surface side of the cart, and moves up and down the cart. The lifting / lowering state is smoothly operated. Further, the gas pressure is controlled to a desired pressure state by a gas circulation circuit formed by connecting to the gas chamber, and the carriage is moved up and down under a desired lifting condition.
[0007]
Patent Document 1 Japanese Patent No. 2877718
[0008]
Patent Document 2 Patent No. 2939233
[0009]
Patent Document 3 Japanese Patent Application Laid-Open No. 2001-26384 (FIGS. 1 and 2 on page 3, right column, line 14 to line 14 to page 4, line 10 to line 10)
[0010]
Patent Document 4 Japanese Patent Laid-Open No. 6-1565 (FIG. 3, page 3, left column, 11th to 20th lines)
[0011]
Patent Document 5 Japanese Patent Application Laid-Open No. 6-1567 (FIG. 1, page 3, line 4 from the bottom left column to line 9 from the top right column)
[0012]
All of the techniques disclosed in Patent Documents 3 to 5 are large facilities, and the gap between the lifting platform and the inner peripheral side wall must have a sufficient clearance to provide an accessory device necessary for the lifting platform. It is. Therefore, when this disclosed technique is applied to a nuclear facility, it is necessary to provide a sufficient gap between the outer peripheral surface of the insert and the inner peripheral surface of the drum can. As a result, the disposal efficiency of radioactive waste There is a problem that decreases.
[0013]
Moreover, since all the techniques disclosed in Patent Documents 3 to 5 supply air to the air chamber, there are the following problems. That is, in order to forcibly supply air to the air chamber, a hole corresponding to the air supply port must be formed in the air chamber. Especially in nuclear facilities, when radioactive waste is stored in drums for a long time, leakage of radioactive materials is an important issue, and it is not a good idea to make holes for supplying air to drums. .
[0014]
In Patent Documents 4 and 5, a sealing material is interposed between the outer peripheral surface of the carriage and the inner peripheral surface of the air chamber. However, this sealing material is fixed to the outer peripheral surface of the carriage or the inner peripheral face of the air chamber, and the carriage has a fixed gap between the outer peripheral surface of the carriage and the outer peripheral surface of the air chamber via the guide member. Since a sealing material is interposed within the interval while maintaining the interval and the sealing function is maintained, there are the following problems.
[0015]
That is, in the canning operation in the low-level radioactive waste melting facility, since the insert suspended by the crane is inserted into the stationary drum can, the insert and the drum can are moved by the swing of the suspended insert. There will always be misalignment. If the seal material is fixed to the outer peripheral surface of the insert or the inner peripheral surface of the drum can, the seal material is rubbed due to the above misalignment when the insert is inserted into the drum can, and the seal material is damaged. There is a problem that there is a risk of it. In particular, in a low-level radioactive waste melting facility, since the work is performed remotely, it takes time to repair the damage of the sealing material, and there is a problem that the processing efficiency of the radioactive waste is lowered.
[0016]
[Problems to be solved by the invention]
The present invention does not fix the sealing material on the outer peripheral surface of the insert or the inner peripheral surface of the drum can, and enables a seal with a narrow gap between the outer periphery of the insert and the inner peripheral surface of the drum can as much as possible. In addition to improving the waste disposal efficiency, even if there is a misalignment between the insert and the drum, the sealing material is not damaged, the processing efficiency of radioactive waste is improved, and the sealing material can be used repeatedly. Thus, there is provided a drum canning method and apparatus which eliminates economic loss and improves the practicality by eliminating leakage of radioactive materials particularly when radioactive waste is processed.
[0017]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the means grasped from the description of claim 1 is that a seal flange contacting the inner peripheral surface of the drum can is attached to the lower end of the insertion guide, and a seal flange that can be placed on the top opening of the drum can The air pipe is provided so as to penetrate the sealing material, and an open valve is provided in the air pipe.
[0018]
The means grasped from the description of claim 2 is that a seal flange is attached to the lower end of the insertion guide with a predetermined gap between the inner peripheral surface of the drum can and a seal flange that can be placed on the top opening of the drum can. An air pipe is provided so as to pass through the sealing material, and an open valve is provided in the air pipe.
[0019]
The means grasped from the description of claim 3 is characterized in that a seal material is provided on the drum can top opening mounting surface of the seal flange.
[0020]
The means grasped from the description of claim 4 is characterized in that the insertion guide is divided into a plurality of parts, and each of the divided insertion guides is movable in the horizontal direction with respect to the seal flange.
[0021]
The means grasped from the description of claim 5 is characterized in that an open valve and a pressurizing valve are provided in the air pipe.
[0022]
The means grasped from the description of claim 6 is that the outer periphery of the insert is held by the holder, the insert is inserted into the drum can via the insertion guide, and the sealing effect of the sealing material attached to the insertion guide is lowered. At the stage where the insert is held in balance with the air pressure in the drum that has been compressed and pressurized by the gravity of the insert, the holding tool is released, and then Open The valve is gradually opened to release the air in the drum can while keeping the balance between the gravity of the insert and the air pressure in the drum, and the insert is lowered, and the insert is left at the bottom of the drum. To do.
[0023]
The means grasped from the description of claim 7 is to hold the outer periphery of the insert with a holder, insert the insert through the insertion guide to the seal material attached to the lower end of the insertion guide, Open to increase the air pressure in the drum, close the pressurizing valve with the insert held by the balance between the gravity of the insert and the air pressure in the drum, and then balance the gravity of the insert and the air pressure in the drum. While Open Open the valve gradually, release the holder when the insert descends to a predetermined position, and release the air in the drum can while keeping the balance between the gravity of the insert and the air pressure in the drum can. Is lowered, and the insert is allowed to stand at the bottom of the drum.
[0024]
[Action]
Next, how the problem is solved by means grasped from the description of each claim will be described. First, in the means grasped from the description of the first aspect, since the sealing material contacting the inner peripheral surface of the drum can is attached to the lower end of the insertion guide, there is a misalignment between the insert into the drum can and the drum can. However, the seal material moves together with the insertion guide, can eliminate the friction between the seal material and the insert due to misalignment, has a simple structure, and has a small cross-sectional dimension. A gap between the outer periphery and the drum inner periphery can be narrowed. And since the seal flange that can be placed on the top opening of the drum can is fixed to the lower end of the insertion guide, the insertion guide and the seal material can be attached to and detached from the drum can, and there is no attachment of the seal material to the insert or the drum can. The sealing function can be maintained. And since air piping was provided so that a sealing material might be penetrated, and the open valve was provided in this air piping, an insert can be inserted in a drum can using air pressure, without making a hole in a drum can.
[0025]
Next, in the means grasped from the description of claim 2, since the seal material is attached to the lower end of the insertion guide with a predetermined gap between the inner peripheral surface of the drum can, the predetermined gap is minimized. The seal material can move with the insertion guide even if there is a misalignment between the drum can and the insert into the drum, and the gap between the seal and the insert due to misalignment It is possible to eliminate rubbing. And since the seal flange that can be placed on the top opening of the drum can is fixed to the lower end of the insertion guide, the insertion guide and the seal material can be attached to and detached from the drum can, and there is no attachment of the seal material to the insert or the drum can. The sealing function can be maintained. And since air piping was provided so that a sealing material might be penetrated, and the open valve was provided in this air piping, an insert can be inserted in a drum can using air pressure, without making a hole in a drum can.
[0026]
Next, in the means grasped from the description of claim 3, by providing a seal material on the drum can top opening mounting surface of the seal flange, the seal between the seal flange and the top of the drum can be made more reliable. it can.
[0027]
Next, in the means grasped from the description of claim 4, the insertion guide is divided into a plurality of parts, and each of the divided insertion guides is movable in the horizontal direction with respect to the seal flange. Can be easily aligned.
[0028]
Next, in the means grasped from the description of claim 5, since the air pipe is provided with the open valve and the pressurizing valve, it is possible to insert the insert into the drum can by using air pressure without making a hole in the drum can. In addition, from the initial stage of inserting the insert into the drum can, the air pressure in the drum can is increased through the pressurizing valve to balance the air pressure in the drum can with the weight of the insert, and the insert is adjusted by air pressure. After that, the pressurization valve is closed and the insert can be smoothly inserted by the release valve.
[0029]
Next, in the means grasped from the description of claim 6, the outer periphery of the insert is held by a holder, and the insert is inserted into the drum can through the insertion guide. Thereby, alignment between the insert and the drum can is performed in advance, and even if the gap between the insert and the drum can is narrow, the insert can be inserted into the drum can, and the sealing material is inserted into the insert. It will not be rubbed by.
[0030]
Subsequently, by inserting the insert into the drum can in the centered state, the sealing material is not damaged, the sealing effect of the sealing material attached to the insertion guide is maintained, and the insert is lowered by the gravity of the descending insert. When the insert is held in balance with the air pressure in the pressurized drum, the holding tool is released. In this way, since the holder can be released when the insert is held by the air pressure in the drum, the insert using the holder can be used even if the gap between the outer surface of the insert and the inner surface of the drum can be narrow. The outer peripheral surface of the drum can be held, and the insert can be held only by the air pressure in the drum can while the core between the insert and the drum can be matched.
[0031]
In this way, since the insert is held only by the air pressure in the drum, Open The valve can be opened gradually to release the air in the drum can while keeping the balance between the gravity of the insert and the air pressure in the drum, so that the insert can be lowered, and the insert can rest smoothly on the bottom of the drum. it can.
[0032]
In the means grasped from the description of the seventh aspect, the outer periphery of the insert is held by the holder and inserted through the insertion guide. Thereby, centering between the insert and the drum can is performed in advance, and even if the gap between the insert and the drum can is narrow, the insert can be inserted into the drum can, and the sealing material is inserted into the drum. It will not be rubbed by.
[0033]
Then, after inserting the insert up to the seal material attached to the lower end of the insertion guide, the pressure valve is opened to increase the air pressure in the drum, and the insert is removed by the balance between the gravity of the insert and the air pressure in the drum. Close the pressurizing valve while holding it. As a result, the insert can be held only by the air pressure in the drum can from the initial stage with the core between the insert and the drum can matched.
[0034]
Next, while balancing the gravity of the insert and the air pressure in the drum Open The valve is opened gradually, the insert is lowered to a predetermined position, and the holder is released when the insert maintains a stable posture only by the air pressure in the drum. Even when the gap between the inner surface and the inner surface is narrow, the outer peripheral surface of the insert using the holder can be retained. Then, while maintaining the balance between the gravity of the insert and the air pressure in the drum can, the air in the drum can be released to lower the insert, and the insert can be smoothly placed on the bottom of the drum can.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. First, an embodiment of the present invention ascertained from the description of claim 1 is that in FIG. 1 and FIG. 2, a seal material 8 that contacts the inner peripheral surface of the drum can 11 is attached to the lower end of the insertion guide 7 and the drum can 11. The seal flange 9 that can be placed in the top opening of the is fixed. And the air piping 10 is provided so that the sealing material 8 may be penetrated, and the open valve 12 is provided in this air piping 10.
[0036]
Next, in the embodiment of the present invention ascertained from the description of claim 2, a predetermined gap W is provided between the lower end of the insertion guide 7 and the inner peripheral surface of the drum 11 as shown in FIG. While attaching the sealing material 13, the seal flange 9 which can be mounted in the top opening of the drum can 11 is fixed. And the air piping 10 is provided so that the sealing material 13 may be penetrated, and the open valve 12 is provided in this air piping 10.
[0037]
Next, in the embodiment of the present invention ascertained from the description of claim 3, a seal member 14 is provided on the drum can top opening mounting surface of the seal flange 9, as shown in FIG.
[0038]
Next, as shown in FIG. 6, the embodiment of the present invention ascertained from the description of claim 4 divides the insertion guide 7 into a plurality of 7a to 7d, and each of the divided insertion guides 7a to 7d includes As shown in FIG. 4, the seal flange 9 is movable in the horizontal direction.
[0039]
Next, in the embodiment of the present invention ascertained from the description of claim 5, as shown in FIGS. 1 to 3, an air valve 10 is provided with an open valve 12 and a pressurizing valve 12 '.
[0040]
Next, in the embodiment of the present invention ascertained from the description of claim 6, the outer periphery of the insert 4 is held by the holder 26 in FIG. A holder when the insert 4 is held in a balance between the sealing effect of the sealing material 8 inserted and attached to the insertion guide 7 and the air pressure in the drum 11 compressed and pressurized by the gravity of the descending insert 4 Release 26, then Open The valve 12 is gradually opened to release the air in the drum 11 while maintaining the balance between the gravity of the insert 4 and the air pressure in the drum 11, and the insert 4 is lowered, and the insert 4 is placed at the bottom of the drum 11. Leave still.
[0041]
Next, in the embodiment of the present invention ascertained from the description of claim 7, in FIG. 7, the outer periphery of the insert 4 is held by the holder 26 and attached to the lower end of the insertion guide 7 via the insertion guide 7 After inserting the insert 4 up to the sealing material 8 (13), the pressure valve 12 'is opened to increase the air pressure in the drum 11 and the pressure is increased by the balance between the gravity of the insert 4 and the air pressure in the drum 11 The pressurizing valve 12 'is closed with the object 4 held, and then the gravity of the insert 4 and the air pressure in the drum 11 are balanced. Open The valve 12 is gradually opened, and the holder 26 is released when the insert 4 is lowered to a predetermined position, and the air in the drum 11 is maintained while maintaining the balance between the gravity of the insert 4 and the air pressure in the drum 11. And the insert 4 is lowered, and the insert 4 is allowed to stand at the bottom of the drum 11.
[0042]
【Example】
Examples will be described below. In FIG. 1, the insertion guide 7 has a funnel-like opening and has a shape in which the insert 4 can be easily inserted. In FIG. 2, which shows an enlarged main part of FIG. 1, a sealing material 8 and a sealing flange 9 are fixed to the lower end of the insertion guide 7.
[0043]
In the case of the present embodiment, since the insertion guide 7 and the seal flange 9 are integrated, the sealing material 8 is fixed across the lower end of the insertion guide 7 and the back surface of the seal flange 9. And the sealing material 8 is attached so that the inner peripheral surface of the drum can 11 and the outer peripheral surface of the insert 4 may be contacted. Further, the sealing material 8 has an inverted U shape with an open end, and spreads due to the internal pressure of the drum can 11. As described above, the sealing material 8 is expanded by the internal pressure of the drum can 11, so that the inner diameter D 1 of the insertion guide 7 (sealing material 8) is larger than the outer diameter D 2 of the insert 4. The sealing material 8 is spread by the internal pressure and is brought into close contact with the outer peripheral surface of the insert 4 to obtain a sealing effect. The air pipe 10 is fixed to the insertion guide 7 through the seal flange 9 and the seal material 8, and an open valve 12 is attached to the air pipe 10. Further, a pressurizing valve 12 ′ is attached branched from the air pipe 10.
[0044]
Next, the embodiment shown in FIG. 3 will be described. In this embodiment as well, the insertion guide 7 and the seal flange 9 are integrated as in the embodiment shown in FIGS. And the sealing material 13 uses the flexible thin material, and is only length L. The relationship between the inlet inner diameter D1 of the sealing material 13, the outer diameter D2 of the insert 4 and the lower end inner diameter D3 of the sealing material 13 is D1>D2> D3.
[0045]
By doing so, when the insert 4 is inserted into the drum can 11, the interference between the seal material 13 and the insert 4 is reduced at the entrance of the seal material 13, and the seal material 13 is not damaged. When the insert 4 is inserted into the drum can 11 to some extent, the cores of the insert 4 and the drum can 11 are substantially aligned so that the lower end of the sealing material 13 is in close contact with the outer periphery of the insert 4. As a result, when the internal pressure of the drum can 11 rises, the entire length L of the sealing material 13 is almost completely removed from the space between the sealing material 13 and the outer peripheral surface of the insert 4 so that air does not escape. The inner pressure of the insert 4 can be expanded and brought into close contact with the outer peripheral surface of the insert 4.
[0046]
Moreover, since the ventilation resistance between the sealing material 13 and the outer peripheral surface of the insert 4 is increased by setting the length L, even if D1 = D3, the sealing material 13 and the outer peripheral surface of the insert 4 Before the air escapes from the gap, the sealing material 13 is expanded by the internal pressure of the drum 11 and the sealing material 13 is brought into close contact with the outer peripheral surface of the insert 4, so that the relationship is almost the same as D 1> D 2> D 3. A sealing effect can be obtained.
[0047]
In this embodiment, the sealing material 13 is flexible and uses a thin sheet-like material instead of a molded sealing material. Therefore, the inner peripheral surface of the drum can 11 and the sealing material 13 are used. It is possible to make the gap W between the outer peripheral surface and the outer peripheral surface as narrow as possible. The upper edge of the seal material 13 is fixed to the back surfaces of the insertion guide 7 and the seal flange 9. In this embodiment, the sealing material 14 is provided on the back surface of the sealing flange 9. However, the sealing material 14 may be omitted and the upper edge of the sealing material 13 may be extended to the portion of the sealing material 14. The air pipe 10 is fixed to the insertion guide 7 so as to penetrate the upper edge of the sealing material 13 and open into the gap W. An air valve 10 is provided with an open valve 12. In addition, a pressurizing valve 12 ′ is provided branched from the air pipe 10. Reference numeral 15 denotes a support flange on which a seal flange 9 is placed and is detachably fixed with a bolt or the like.
[0048]
Next, the embodiment shown in FIG. 4 will be described. In this embodiment, the insertion guide 7 is divided into 7 a to 7 d as shown in FIG. 6, and the insertion guide 7 and the seal flange 9 are not fixed, but the insertion guide 7 is in the horizontal direction with respect to the seal flange 9. It can move in the direction of the arrow. The horizontal movement mechanism of the insertion guide 7 is provided with an upper slide flange 16 and a lower slide flange 17 integrally with the divided insertion guide 7, and the upper slide flange 16 and the lower slide are formed in a concave groove formed in the seal flange 9. The flange 17 is fitted, and the insertion guide 7 is held by the seal flange 9 so that the insertion guide 7 can slide so as to sandwich the inner peripheral side of the seal flange 9.
[0049]
As shown in FIG. 5, a compression spring 21 is provided between the insertion guide 7 and the seal flange 9, and the insertion guide 7 is always provided with the elastic force of the compression spring 21 in the direction of the arrow. Yes. 22 is a spring receiver fixed to the seal flange 9, and 23 is a spring receiver fixed to the insertion guide 7 side. In FIG. 4, since the elastic force of the compression spring 21 is always applied to the insertion guide 7 in this way, the divided insertion guides 7 a to 7 d (FIG. 6) are concentric with the seal flange 9. Thus, stoppers 18 and 19 are provided. That is, the stopper 18 is fixed to the seal flange 9, and the stopper 19 is fixed to the upper slide flange 16, so that the stopper 18 can move only against the elastic force of the compression spring 21 by the gap C. The arrangement relationship between the compression spring 21 and the slide mechanism (upper slide flange 16) is as shown in FIG.
[0050]
In the case of this embodiment, the insertion guide 7 is movable with respect to the seal flange 9, so that the upper edge of the seal material 13 is fixed to the lower slide flange 17. A sealing material 20 is fixed to the back surface of the seal flange 9 and in contact with the top of the opening of the drum can 11. Further, since the sealing material 13 is flexible and uses a thin sheet-like material instead of a molded sealing material, the sealing material 13 has the divided insertion guides 7a to 7d in the horizontal direction. The displacement can be absorbed even if moved to. Alternatively, the sealing material 13 may be divided in accordance with the divided insertion guides 7a to 7d, and the divided portions of the sealing material 13 may be overlapped with each other. That is, since the sealing material 13 is expanded by the internal pressure of the drum can, the divided mating surfaces can also be pressure-bonded and the sealing effect can be maintained. Further, in this embodiment, a convex portion 24 is provided below the sealing material 13. The inner diameter D2 of the convex portion 24 is substantially equal to the outer diameter of the insert 4. Moreover, also in this embodiment, as in the embodiment shown in FIG. 3, an air pipe 10 is provided so as to penetrate the sealing material 13, and an open valve 12 is attached to the air pipe 10 (FIG. 6). Moreover, as shown in FIG. 2, it branches from the air piping 10, and pressurization valve 12 'is attached.
[0051]
The seals 8 and 13 are made of ordinary seals such as Teflon, silicone rubber, polyurethane rubber, Viton, natural rubber and the like because the insert 4 and the drum 11 are at room temperature and the airtight conditions and radiation environment conditions are not so severe. The use of materials is possible.
[0052]
A method for determining the gap W between the outer periphery of the sealing material and the inner surface of the drum can shown in FIGS. 3 to 5 is as follows.
Wmin (minimum gap) = {(D−D2) − (d2 + d)} × 0.5−t
Wmax (maximum gap) = {(D−D2) + (d2 + d)} × 0.5−t
Where D is the inner diameter of the drum 11, D 2 is the outer diameter of the insert 4, d is the inner diameter error of the drum can 11, d 2 is the outer diameter error of the insert 4, and t is the thickness of the sealing material 13. Here, as a specific example, the numerical values of the insert 4 and the drum 11 that are actually handled are calculated as follows. When the nominal outer diameter D2 ± d2 = 550 ± 5 mm of the insert 4 and the nominal outer diameter D ± d = 567 ± 3 mm of the drum can and the thickness t = 0.5 mm of the sealing material 13 are applied to the above formula, Wmin = 4 mm, Wmax = 12 mm. As described above, the insert 4 and the drum 11 are combined so that the gap W is as small as possible and the disposal efficiency of the radioactive waste is increased.
[0053]
FIG. 7 is a diagram showing the entire drum canning apparatus, and the usage state of the embodiment shown in FIGS. 1 to 6 will be described. In the initial state, the top of the drum can 11 supported by the gantry 25 is open. Next, the seal flange 9 in which the insertion guide 7, the seal material 8 (13), and the seal flange 9 are integrated is placed on the support flange 15 attached to the gantry 25, and fixed with the bolts 27. Thereby, the insertion guide 7 can be set in the opening of the drum can 11 with the axial center between the insertion guide 7 and the drum can 11 substantially coinciding. The opening valve 12 and the pressurizing valve 12 'are closed in advance. Hereinafter, two cases of using only the open valve 12 and using both the open valve 12 and the pressurizing valve 12 'will be described.
[0054]
(When using only the open valve 12)
After the insertion guide 7 is set at the opening of the drum can 11 with the axial center between the insertion guide 7 and the drum can 11 substantially matched, the outer periphery of the insert 4 is held by the holder 26 and the crane 3 It is transferred to the position directly above the insertion guide 7, the crane 3 is remotely operated and slowly suspended, and the insert 4 is inserted into the drum can 11. Then, the internal pressure in the drum can 11 rises due to the cylinder effect between the insert 4 and the drum can 11 via the sealing material 8 (13), and an upward force (air pressure) is applied to the holder 26. Then, the suspension of the crane 3 is stopped (at this stage, the lower end of the holder 26 is not in contact with the inlet portion of the insertion guide 7), and the holding force is gradually reduced while the position of the holder 26 remains unchanged. The insert 4 is slowly slid off the holder 26. Then, it is confirmed that the holding force of the holder 26 is released, the gravity of the insert 4 and the internal pressure of the drum 11 are balanced, and the lowering of the insert 4 is almost stopped.
[0055]
Next, while adjusting the opening degree of the release valve 12, the air in the drum can 11 is discharged, the insert 4 is gradually lowered, and the insert 4 is landed on the bottom of the drum can 11. Then, the empty holder 26 is moved to the next working position by the crane 3, the bolt 27 is removed, and the insertion guide 7, the seal material 8 (13) and the seal flange 9 are integrated with each other from the support flange 15. Remove and wait for next work.
[0056]
(When both open valve 12 and pressurizing valve 12 'are used)
After the insertion guide 7 is set at the opening of the drum can 11 with the axial center between the insertion guide 7 and the drum can 11 substantially matched, the outer periphery of the insert 4 is held by the holder 26 and the crane 3 It is transferred to the position directly above the insertion guide 7, the crane 3 is remotely operated and slowly suspended, and the insert 4 is inserted into the drum can 11. When the insert 4 is lowered until the insert 4 comes into contact with the sealing material 13 (8), the pressurizing valve 12 'is opened, air is supplied into the drum 11 to increase the pressure, and the holding tool 26 is faced upward. When the force (air pressure) is applied, the suspension of the crane 3 is stopped (at this stage, the lower end of the holder 26 is not in contact with the inlet portion of the insertion guide 7), and the position of the holder 26 is changed. Leave the holding force gradually loose. In this case, the amount of air supplied from the pressurizing valve 12 'is adjusted until the posture of the insert 4 supported by air pressure is stabilized (until the center of gravity of the insert 4 passes the entrance of the seal member 13 (8)). The gravity of the insert 4 and the internal pressure of the drum can 11 are preferably balanced. Then, it is confirmed that the holding force of the holder 26 is released, the gravity of the insert 4 and the internal pressure of the drum 11 are balanced, and the lowering of the insert 4 is almost stopped.
[0057]
Next, the pressurizing valve 12 ′ is closed and the opening of the release valve 12 is adjusted, the air in the drum can 11 is discharged, the insert 4 is gradually lowered, and the insert 4 is placed at the bottom of the drum can 11. Let Similarly, the empty holder 26 is moved to the next working position by the crane 3, the bolt 27 is removed, and the insertion guide 7, the seal material 8 (13) and the seal flange 9 are integrated into a support flange. Remove from 15 and wait for the next operation.
[0058]
In the embodiment shown in FIG. 8, a vertical damper 30 is provided between the bottom plate 28 and the base 29 of the gantry 25 so as to buffer an impact when the insert 4 falls in the drum 11 for some reason. . In the embodiment shown in FIG. 9, a core member 32 is provided at the center of the bottom plate 28 of the gantry 25. As shown in FIG. 10, a damper 31 is provided in three directions between the core member 32 and the base 29. In addition, a roller 33 is provided between the base 29 and the bottom plate 28. By doing so, even when the insertion guide 7 and the seal flange 9 are integrally fixed as in the embodiment shown in FIGS. 2 and 3, the insert 4 suspended by the crane 3 Even if there is misalignment with the insertion guide 7 (drum can 11), the gantry 25 (insertion guide 7, drum can 11) moves by the horizontal damper 31 and automatically misaligns with the insert 4. It can be corrected.
[0059]
[Operation and Effect of Example]
First, the operation and effect of the embodiment shown in FIG. 2 will be described. Since the sealing material 8 is provided at the lower end of the insertion guide 7 and the sealing material 8 is not provided on the insert 4 and the drum 11, the insertion guide 7 and the sealing material 8 can be used repeatedly, and economical loss is eliminated. Can do.
[0060]
Further, since the sealing material 8 is provided at the lower end of the insertion guide 7, when the insert 4 is suspended by the crane 3, the lower end of the insert 4 first comes into contact with the opening of the insertion guide 7. 4 and the insertion guide 7 can be eliminated, and when the insert 4 is lowered to the seal material 8, there is no misalignment between the insert 4 and the seal material 8, and the seal material. 8 has no excessive rubbing due to misalignment. Thereby, damage to the sealing material 8 can be prevented, the life of the sealing material 8 can be extended, and the processing efficiency of radioactive waste can be improved. Since the sealing material 8 can be prevented from being damaged as described above, the small sealing material 8 having a simple structure can be used, and a gap between the outer periphery of the insert 4 and the inner surface of the drum can 11 is formed. It can be reduced and the disposal efficiency of radioactive waste can be improved.
[0061]
Further, since the sealing material 8 has an inverted U shape with an open end, the sealing material 8 spreads due to the internal pressure of the drum 11, and the inner diameter D 1 of the insertion guide 7 (sealing material 8) is set to the outer diameter of the insert 4. Even if it is larger than D2, the sealing material 8 is spread by the internal pressure of the drum can 11 and is brought into close contact with the outer peripheral surface of the insert 4 to obtain a sealing effect. Thus, by setting D1> D2, the gap between the outer periphery of the insert 4 and the inner peripheral surface of the drum can 11 can be reduced, and the disposal efficiency of radioactive waste is improved, and the insert 4 is improved. Is inserted into the drum 11, the contact between the insert 4 and the sealing material 8 is reduced, and damage to the sealing material 8 due to misalignment between the insert 4 and the sealing material 8 is prevented. The lifetime of the sealing material 8 can be increased, and the processing efficiency of the radioactive waste can be improved.
[0062]
Since the air pipe 10 is fixed to the insertion guide 7 in a state of passing through the seal flange 9 and the seal material 8, the insert 4 is inserted into the drum can 11 using air pressure without making a hole in the drum can 11. And the problem of radioactive material leakage can be solved. And since the release valve 12 was attached to the air piping 10, the air discharge speed in the drum can 11 can be adjusted, and the insert 4 can be landed to the bottom of the drum can 11 and the insert 4 can be inserted by dropping. Damage to the object 4 and the drum 11 can be prevented. Further, since the pressure valve 12 'is provided branching from the pipe 10, the pressure inside the drum can 11 can be increased in a short time, and the processing efficiency of radioactive waste can be improved.
[0063]
Next, the operation and effect of the embodiment shown in FIG. 3 will be described. In this embodiment, the portions common to the operation and effect of the embodiment shown in FIG. 2, that is, (1) the operation and effect of providing the sealing material 8 at the lower end of the insertion guide 7, (2) the lower end of the insertion guide 7 (3) The air pipe 10 passes through the seal flange 9 and the seal material 8 to the insertion guide 7 while the seal material 8 is provided on the insert 4 and the drum can 11 and the seal material 8 is not provided. (4) Since the operation and effect of attaching the release valve 12 and the pressurizing valve 12 'to the air pipe 10 are the same, the description thereof is omitted.
[0064]
Therefore, only the operation and effect unique to the embodiment shown in FIG. 3 will be described. In this embodiment, the sealing material 13 uses a flexible thin material and is long by the length L. Therefore, even when the length of the insert 4 is short, the sealing material 13 deviates from the length L of the sealing material 13. Unless otherwise, the sealing function between the insert 4 and the seal member 13 is maintained, so that the length of the insert 4 can be given freedom, and the insertion guide 7, the seal member 13, and the seal flange 9 can be provided. The versatility of the integrated device can be improved. Thereby, since it can respond to the various length of the insert 4, work efficiency can be improved and the processing efficiency of radioactive waste can be improved.
[0065]
When the insert 4 is inserted into the drum can 11 by setting the relationship between the inlet inner diameter D1 of the sealing material 13, the outer diameter D2 of the insert 4 and the lower end inner diameter D3 of the seal material 13 to D1>D2> D3. Furthermore, at the entrance of the sealing material 13, the interference between the sealing material 13 and the insert 4 is reduced, the sealing material 13 is not damaged, the life of the sealing material 13 is extended, and the radioactive waste is treated. In addition to improving efficiency, when the insert 4 is inserted into the drum 11 to some extent, the cores of the insert 4 and the drum 11 are substantially aligned, and the lower end of the sealing material 13 is in close contact with the outer periphery of the insert 4. Therefore, when the internal pressure of the drum can 11 rises, the entire length L of the sealing material 13 is removed from the space between the sealing material 13 and the outer peripheral surface of the insert 4 so that air does not escape. Insert and expand by internal pressure In close contact with the 4 outer circumferential surface of the can to facilitate insertion of the insert 4 by air pressure.
[0066]
Moreover, since the ventilation resistance between the sealing material 13 and the outer peripheral surface of the insert 4 is increased by setting the length L, even if D1 = D3, the sealing material 13 and the outer peripheral surface of the insert 4 Before the air escapes from the gap, the sealing material 13 is expanded by the internal pressure of the drum 11 and the sealing material 13 is brought into close contact with the outer peripheral surface of the insert 4, so that the relationship is almost the same as D 1> D 2> D 3. A sealing effect can be obtained.
[0067]
In the case of this embodiment, since the sealing material 13 is flexible and uses a thin sheet-like material, a gap between the inner peripheral surface of the drum can 11 and the outer peripheral surface of the sealing material 13 is used. W can be made as narrow as possible, and the internal volume of the drum can 11 can be effectively utilized to improve the disposal efficiency of radioactive waste. Moreover, the drum can 11 can be made small and the storage space of the drum can 11 can be used effectively.
[0068]
Further, in this embodiment, since the seal material 14 is provided on the back surface of the seal flange 9, the seal between the top opening of the drum 11 and the seal flange 9 is ensured, and the pressure in the drum can 11 can be easily adjusted. Thus, the insert 4 can be smoothly inserted using air pressure.
[0069]
Next, the operation and effect of the embodiment shown in FIGS. 4 and 5 will be described. In this embodiment, the portions common to the operation and effect of the embodiment shown in FIG. 2, that is, (1) the operation and effect of providing the sealing material 8 at the lower end of the insertion guide 7, (2) the lower end of the insertion guide 7 (3) The air pipe 10 passes through the seal flange 9 and the seal material 8 to the insertion guide 7 while the seal material 8 is provided on the insert 4 and the drum can 11 and the seal material 8 is not provided. (4) The operation and effect of attaching the release valve 12 and the pressurizing valve 12 'to the air pipe 10, and the sealing material 13 shown in FIG. 3 is made of a thin flexible material. The operation and effect that are provided, and the operation and effect that is increased by the length L are the same, and therefore the description thereof is omitted.
[0070]
Therefore, only the operation and effect unique to the embodiment shown in FIGS. 4 and 5 will be described. In this embodiment, the insertion guide 7 is divided into 7 a to 7 d as shown in FIG. 6, and the insertion guide 7 and the seal flange 9 are not fixed, but the insertion guide 7 is in the horizontal direction with respect to the seal flange 9. Since it is movable in the direction of the arrow, even if the insert 4 that is suspended by the crane 3 and has a slight misalignment contacts the insertion guide 7, the insertion guide 7 moves in the horizontal direction. While mitigating the impact force, it is possible to eliminate the damage of the insertion guide 7, the slide mechanism, the seal flange 9, the seal material 13, the mount 25, and the like, and improve the processing efficiency of radioactive waste.
[0071]
The horizontal movement mechanism of the insertion guide 6 is provided with an upper slide flange 16 and a lower slide flange 17 integrally with the divided insertion guide 7, and the upper slide flange 16 and the lower slide are formed in a concave groove formed in the seal flange 9. The flange 17 is fitted, and the insertion guide 7 is held by the seal flange 9 so that the inner peripheral side of the seal flange 9 is sandwiched, and the sealing material 13 is fixed to the lower end of the insertion guide 7. Therefore, through the horizontal movement mechanism, the insertion guide 7, the seal flange 9 and the seal material 13 are integrated and can be used repeatedly, improving the work efficiency and improving the processing efficiency of the radioactive waste, Economic loss can be reduced.
[0072]
As shown in FIG. 5, a compression spring 21 is provided between the insertion guide 7 and the seal flange 9, and the elastic force of the compression spring 21 is always applied to the insertion guide 7 and divided. Since the insertion guides 7 a to 7 d (FIG. 6) are concentric with the seal flange 9, the insert 4 suspended by the crane 3 abuts on the insertion guide 7 and moves the insertion guide 7. If it does, it will be pushed back by the elastic force of the compression spring 21, and the centering of the insert 4 and the insertion guide 7 can be performed automatically.
[0073]
The sealing material 13 is fixed to the lower end of the insertion guide 7, the insertion guide 7 and the seal flange 9 are concentric with a compression spring 21, and the seal flange 9 is bolted to the support flange 15 of the gantry 25. 27, there is no misalignment among the drum 11, the insert 4, the insertion guide 7, and the sealing material 13 that are stationary on the gantry 25. Therefore, there is no rubbing between the insert 4 and the sealing material 13 due to this misalignment, the life of the sealing material 13 can be extended, and the processing efficiency of radioactive waste can be improved.
[0074]
In this embodiment, the seal material 20 is fixed to the back surface of the seal flange 9 and in contact with the top of the opening of the drum 11, so that the gap between the seal flange 9 and the top of the drum 11 is open. The seal is more secure and there is no air leak from this part. Accordingly, the pressure inside the drum can 11 is increased by the pressurizing valve 12 'in a short time to improve the processing efficiency of the radioactive waste, and the adjustment of the air pressure in the drum can 11 by adjusting the opening degree of the release valve 12 is ensured. Insert 4 can be smoothly inserted using pressure.
[0075]
Further, since the sealing material 13 is flexible and uses a thin sheet-like material, the sealing material 13 is displaced even when the divided insertion guides 7a to 7d move in the horizontal direction. Can be absorbed, the divided insertion guides 7a to 7d can be moved in the horizontal direction, and the operations and effects of the divided insertion guides 7a to 7d can be obtained in the horizontal direction.
[0076]
Even if the sealing material 13 is divided in accordance with the divided insertion guides 7a to 7d and the divided portions of the sealing material 13 are overlapped with each other, the sealing material 13 is pushed and spread by the internal pressure of the drum can. The mating surfaces can also be crimped to maintain the sealing effect. Accordingly, in this case as well, the divided insertion guides 7a to 7d can be moved in the horizontal direction, and the above-described operation and effect can be achieved by the movement of the divided insertion guides 7a to 7d in the horizontal direction.
[0077]
Further, in this embodiment, a convex portion 24 is provided at the lower portion of the sealing material 13, and an inner diameter D <b> 2 of the convex portion 24 is substantially equal to the outer diameter of the insert 4. The inner diameter of the sealing material 13 can be made larger than the outer diameter of the insert 4. Therefore, when the insert 4 is inserted, there is no contact between the seal material 13 and the insert 4 until the protrusion 24 is reached, so that the seal material 13 can be prevented from being damaged to extend its life. And the processing efficiency of radioactive waste can be improved.
[0078]
And even if the internal pressure of the drum can 11 rises, since the convex part 24 is in contact with the insert, there is no air leakage from this part. Accordingly, the pressure inside the drum can 11 is efficiently increased, and the pressure increase causes the seal material 13 other than the convex portion 24 to be spread and closely adhere to the outer periphery of the insert 4, ensuring a seal, and opening the release valve 12. It is possible to smoothly insert the insert 4 using the air pressure by adjusting the degree.
[0079]
Next, in the embodiment shown in FIG. 8, since the vertical damper 30 is provided between the bottom plate 28 and the base 29 of the gantry 25, even when the insert 4 falls in the drum 11 for some reason, the impact is absorbed. In addition, damage to the drum can 11 can be prevented, and leakage of radioactive material due to breakage of the drum can 11 can be prevented, particularly in the treatment of radioactive waste.
[0080]
Next, in the embodiment shown in FIG. 9, a core member 32 is provided at the center of the bottom plate 28 of the gantry 25, and as shown in FIG. 10, a damper is provided in three directions between the core member 32 and the base 29. 31 is provided, and even when the insertion guide 7 and the seal flange 9 are integrally fixed as in the embodiment shown in FIG. 2 and FIG. Even if there is a misalignment with the guide 7 (drum 11), the gantry 25 (insertion guide 7, drum 11) is moved by the horizontal damper 31 and the misalignment with the insert 4 is automatically corrected. can do. Thereby, there is no rubbing between the seal material 8 (13) and the insert 4 due to misalignment between the insert 4 and the insert guide 7, and the life of the seal material 8 (13) is extended. The processing efficiency of radioactive waste can be improved. Further, by providing the roller 33 between the base 29 and the bottom plate 28, the gantry 25 can be moved smoothly.
[0081]
【The invention's effect】
According to the present invention ascertained from the detailed description of the invention based on the description of the first aspect, the seal material contacting the inner peripheral surface of the drum can is attached to the lower end of the insertion guide, the insert into the drum can, the drum can, Even if there is a misalignment between the seal material, the seal material moves with the insertion guide, and the rubbing between the seal material and the insert due to misalignment can be eliminated. In addition to improving the efficiency of radioactive waste treatment and preventing damage to the sealing material, the sealing material has a simple structure and a small cross-sectional dimension. Since the gap between the drum and the inner periphery of the drum can can be narrowed, the disposal efficiency of radioactive waste can be improved.
[0082]
Then, a seal flange that can be placed on the top opening of the drum can is fixed to the lower end of the insertion guide, and the insertion guide and the seal material can be attached to and detached from the drum can without attaching the seal material to the insert or the drum can. Since the sealing function can be maintained, the insertion guide and the sealing material can be used repeatedly, and economic loss can be eliminated. An air pipe is provided so as to penetrate the sealing material, and an open valve is provided in the air pipe, so that the insert can be inserted into the drum can by using air pressure without making a hole in the drum can. Leakage of radioactive substances when processing waste can be eliminated, and practicality can be improved.
[0083]
Next, based on the description of claim 2, according to the present invention ascertained from the detailed description of the invention, a predetermined gap is provided between the lower end of the insertion guide and the inner peripheral surface of the drum can, and the sealing material is provided. Since the attachment and the predetermined gap can be set to a minimum arbitrary gap, the disposal efficiency of radioactive waste can be improved. And even if there is a misalignment between the insert to the drum can and the drum can, the seal material moves with the insertion guide, so that rubbing between the seal material and the insert due to the misalignment can be eliminated, It is possible to eliminate damage to the sealing material, extend the life of the sealing material, and improve the processing efficiency of radioactive waste.
[0084]
Then, a seal flange that can be placed on the top opening of the drum can is fixed to the lower end of the insertion guide, and the insertion guide and the seal material can be attached to and detached from the drum can without attaching the seal material to the insert or the drum can. Since the sealing function can be maintained, the insertion guide and the sealing material can be used repeatedly, and economic loss can be eliminated. An air pipe is provided so as to penetrate the sealing material, and an open valve is provided in the air pipe, so that the insert can be inserted into the drum can by using air pressure without making a hole in the drum can. Leakage of radioactive substances when processing waste can be eliminated, and practicality can be improved.
[0085]
Next, based on the description of the third aspect, according to the present invention ascertained from the detailed description of the invention, a seal material is provided on the drum can top opening mounting surface of the seal flange, and the seal flange and the top of the drum can Since the sealing between the two can be further ensured, the internal pressure of the drum can can be easily adjusted, and the insertion using the air pressure can be smoothly performed.
[0086]
Next, based on the description of claim 4, according to the present invention ascertained from the detailed description of the invention, the insertion guide is divided into a plurality of parts, and each of the divided insertion guides moves in the horizontal direction with respect to the seal flange. This makes it possible to easily align the core between the insert and the drum, so that there is no friction between the seal and the insert due to misalignment, no damage to the seal, and the seal The service life of the radioactive waste can be improved.
[0087]
Next, based on the description of claim 5, according to the present invention ascertained from the detailed description of the invention, an air valve is provided with an open valve and a pressurizing valve, and air pressure is utilized without making a hole in the drum. Thus, since the insert can be inserted into the drum can, leakage of the radioactive material particularly when processing the radioactive waste can be eliminated, and the practicality can be improved.
[0088]
Further, from the initial stage of inserting the insert into the drum can, the air pressure in the drum can is increased through the pressurizing valve, the air pressure in the drum can and the weight of the insert are balanced, and the insert is held by air pressure, Thereafter, the pressurizing valve is closed and the insert can be smoothly inserted by the open valve, so that the pressure in the drum can be increased in a short time, and the processing efficiency of the radioactive waste can be improved.
[0089]
Next, based on the description of claim 6, according to the present invention ascertained from the detailed description of the invention, the outer periphery of the insert is held by the holder, and the insert is inserted into the drum can via the insertion guide. . Thereby, since the centering between the insert and the drum can is performed in advance, even if the gap between the insert and the drum can is narrow, the insert can be inserted into the drum can. The clearance between the inner peripheral surface of the sealing material can be narrowed and the disposal efficiency of radioactive waste can be improved, and the sealing material is not rubbed by the insert. It is possible to extend the life and improve the processing efficiency of radioactive waste.
[0090]
Subsequently, by inserting the insert into the drum can in the centered state, the sealing material is not damaged, the sealing effect of the sealing material attached to the insertion guide is maintained, and the insert is lowered by the gravity of the descending insert. When the insert is held in balance with the air pressure in the pressurized drum, the holding tool is released. In this way, at the stage where the insert is held by the air pressure in the drum can, the holding tool is released and a gap for inserting the holder is not necessary, so there is no gap between the outer surface of the insert and the inner surface of the drum can. Even if it is narrow, it is possible to hold the outer peripheral surface of the insert using a holding tool, and hold the insert only with the air pressure in the drum can with the core between the insert and the drum matched. Therefore, the gap between the outer peripheral surface of the insert and the inner peripheral surface of the drum can can be narrowed, and the disposal efficiency of radioactive waste can be improved.
[0091]
In this way, the insert is held only by the air pressure in the drum, and then Open The valve is gradually opened to release the air in the drum can while keeping the balance between the gravity of the insert and the air pressure in the drum, so that the insert is lowered, so that the insert can rest smoothly on the bottom of the drum. Can do.
[0092]
Next, based on the description of claim 7, according to the present invention ascertained from the detailed description of the invention, the outer periphery of the insert is held by the holder and inserted through the insertion guide. Accordingly, the insert and the drum can be aligned in advance, and even if the gap between the insert and the drum can is narrow, the insert can be inserted into the drum can. The gap between the inner peripheral surface of the sealing member can be narrowed, the disposal efficiency of radioactive waste can be improved, and the sealing material is not rubbed by the insert. The life of the material can be extended, and the processing efficiency of radioactive waste can be improved.
[0093]
Then, after inserting the insert up to the seal material attached to the lower end of the insertion guide, the pressure valve is opened to increase the air pressure in the drum, and the insert is removed by the balance between the gravity of the insert and the air pressure in the drum. Close the pressurizing valve while holding it. As a result, the insert can be held only by the air pressure in the drum can from the initial stage in a state where the core between the insert and the drum can be matched, so that the pressure in the drum can be increased in a short time. And the disposal efficiency of radioactive waste can be improved.
[0094]
Next, while balancing the gravity of the insert and the air pressure in the drum Open Open the valve gradually, the insert descends to the specified position, and the holding of the holder is released when the insert maintains a stable posture only by the air pressure in the drum, and the outer surface of the insert and the inner surface of the drum can The outer peripheral surface of the insert using the holder can be held even if the clearance between the outer peripheral surface and the inner surface of the drum can is reduced. The disposal efficiency can be improved. Then, while maintaining the balance between the gravity of the insert and the air pressure in the drum, the air in the drum can be released and the insert is lowered, so that the insert can be smoothly placed on the bottom of the drum.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing the entire outline of the present embodiment.
FIG. 2 is a longitudinal sectional view of an embodiment showing a main part in FIG. 1;
3 is a longitudinal sectional view of another embodiment showing the main part in FIG. 1. FIG.
4 is a longitudinal sectional view of another embodiment showing the main part in FIG. 1. FIG.
5 is a longitudinal sectional view of another embodiment showing the main part in FIG. 1. FIG.
6 is a plan view of the seal flange of FIGS. 4 and 5. FIG.
FIG. 7 is a longitudinal sectional view showing a usage state of the present embodiment.
FIG. 8 is a longitudinal sectional view of a gantry provided with a vertical damper.
FIG. 9 is a longitudinal sectional view of a gantry provided with a horizontal damper.
10 is a plan view of the base 29 in FIG. 9. FIG.
[Explanation of symbols]
3 crane
4 Insert
7 Insertion guide
8 Sealing material
9 Seal flange
10 Air piping
11 drums
12 Opening valve
12 'pressurization valve
13 Sealing material
14 Sealing material
15 Support flange
16 Upper slide flange
17 Lower slide flange
18 Stopper
19 Stopper
20 Sealing material
21 Compression spring
22 Spring receiver
23 Spring receiver
24 Convex
25 frame
26 Holder
27 volts
28 Bottom plate
29 base
30 Vertical damper
31 Horizontal damper
32 core member
33 Laura

Claims (7)

Contact with is attached a sealing member for sealing the outer periphery of the insertion guide lower end in contact with the inner peripheral surface insert of drums, the can be placed seal flange secured to the top opening of the drum, through the sealing material An air pipe for ventilating the inside of the drum can is provided, and an open valve is provided in the air pipe. At the bottom end of the insertion guide, a predetermined gap is provided between the inner peripheral surface of the drum can and a sealing material for sealing in contact with the outer periphery of the insert is attached, and a seal flange that can be placed on the top opening of the drum can is fixed A drum canning apparatus comprising an air pipe that passes through the sealing material and vents into the drum can, and an open valve is provided in the air pipe.   The drum canning apparatus according to claim 2, wherein a sealing material is provided on a drum can top opening mounting surface of the seal flange. The drum canning apparatus according to claim 2 or 3, wherein the insertion guide is divided into a plurality of parts, and each of the divided insertion guides is movable in a horizontal direction with respect to the seal flange. Drum canning apparatus according to claim 1, any one of 4, wherein said providing said open valve plus pressure valve in the air pipe. The outer periphery of the insert is held by a holder, the insert is inserted into the drum can through the insertion guide, the sealing effect of the sealing material attached to the insertion guide, and the drum can compressed and pressurized by the gravity of the descending insert Release the retainer when the insert is held in balance with the air pressure inside, and then gradually open the release valve to maintain the balance between the gravity of the insert and the air pressure inside the drum. Is released, the insert is lowered, and the insert is allowed to stand at the bottom of the drum. After holding the outer periphery of the insert with a holder and inserting the insert through the insertion guide to the seal material attached to the lower end of the insertion guide, the pressure valve is opened to increase the air pressure in the drum, and the insert Close the pressurizing valve while holding the insert by balancing the gravity of the drum and the air pressure in the drum, and then gradually open the release valve while balancing the gravity of the insert and the air pressure in the drum. Release the holder when the insert is lowered, release air in the drum can while keeping the balance between the gravity of the insert and the air pressure in the drum, lower the insert, and insert the insert into the bottom of the drum The drum canning method characterized by leaving still.

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