Dumping device and method for small hanging basket of aftertreatment dissolver

Abstract

The invention discloses a dumping device and method for a small hanging basket of a post-treatment dissolver. The dumping device comprises a bottom plate, a supporting frame, a dumping barrel, a positioning barrel and a cladding barrel. A linear guide rail is mounted on the bottom plate, and a mounting plate is mounted on the linear guide rail; the supporting frame is welded to the bottom plate, a pull rod is arranged on the upper portion of the supporting frame and connected with and drives the left end of the rack, the upper surface of the rack makes contact with the gear, and the roller supports the lower surface of the rack. The rotating shaft is welded on the outer wall of the dumping barrel and is connected with the gear; the mounting plate is mounted on the linear guide rail, the positioning barrel is mounted above the mounting plate, and the cladding barrel is mounted in the positioning barrel; a small hanging basket is installed on the upper portion of the dumping barrel, and cladding chippings are contained in the small hanging basket and limited through two T-shaped limiting devices. According to the device, a gear and rack mechanism can be used for treating cladding chippings in the small hanging basket, and finally the purposes of reducing the production cost and reducing the generation amount of high-level waste are achieved.

Description

Technical Field

[0001] This patent relates to the technical field of spent fuel reprocessing, and particularly to a dumping device and method for the small basket of a post-treatment dissolver. Background Art

[0002] In a spent fuel reprocessing facility, when the cladding debris in the small basket of the dissolver reaches a certain volume, the small basket needs to be replaced. To achieve the reuse of the small basket of the dissolver, it is necessary to dump the cladding debris in the small basket. Therefore, it is necessary to design a dumping device to realize the dumping of the cladding debris in the small basket, increase the number of uses of the small basket, reduce the production cost, and reduce the generation amount of high-level radioactive waste. Summary of the Invention

[0003] The purpose of the present invention is to provide a dumping device and method for the small basket of a post-treatment dissolver, which can dump the cladding debris in the small basket to downstream equipment and realize the reuse of the small basket.

[0004] The technical solution of the present invention is as follows: A dumping device for the small basket of a post-treatment dissolver includes a bottom plate, a support frame, a dumping bucket, a positioning bucket, and a cladding bucket; a linear guide rail is installed on the bottom plate, and a mounting plate is installed on the linear guide rail;

[0005] The support frame is welded to the bottom plate, and a pull rod is provided at its upper part. The pull rod connects to and drives the left end of the rack, and the upper surface of the rack contacts the gear, while the roller supports the lower surface of the rack;

[0006] A rotating shaft is welded to the outer wall of the dumping bucket and is connected to the gear;

[0007] The mounting plate is installed on the linear guide rail, and a positioning bucket is installed above it, and a cladding bucket is installed in the positioning bucket;

[0008] The small basket is installed on the upper part of the dumping bucket. The inside of the small basket contains cladding debris and is limited by two T-shaped limiting devices.

[0009] There are two racks, namely the left and right racks, and one rack corresponds to one gear and three rollers.

[0010] It further includes a guiding and limiting block, which limits the rack to prevent the rack from slipping out of the groove during the process of being pulled by the pull rod 8.

[0011] The upper part of the support frame is provided with a lifting lug.

[0012] Stop blocks A and B are respectively provided at both ends of the linear guide rail.

[0013] There are two support seats on the upper part of the support frame, which are located inside the two gears. The rotating shaft is fixed on both sides of the dumping bucket and passes through the support seats through bearings and is connected to the gear.

[0014] A guiding seat is placed in the positioning barrel, and the cladding barrel is installed through the guiding seat.

[0015] The T-shaped limiting device includes a stop plate, a support block. A rotating shaft connects the stop plate and the support block. There are an opening position positioning hole and a limiting positioning hole on the stop plate; and the limiting shaft is fixed on the support block; the support block is welded on the tipping barrel; a railing is also installed on the stop plate.

[0016] There is a pull rod on the mounting plate.

[0017] A usage method of a tipping device for a small basket of a post-treatment dissolver, comprising the following steps:

[0018] S1: The small basket is alone in the hot cell and contains cladding debris. When it is found that the volume of the cladding debris in the small basket in the hot cell reaches the volume to be replaced, use the lifting lug to hoist this device into the hot cell: hoist and install the small basket inside the tipping barrel, so that the two T-shaped limiting devices are in a limiting state;

[0019] S2: Pull the pull rod, drive the rack to move horizontally, and then drive the gear to do circular motion. The gear drives the rotating shaft, and then drives the tipping barrel to turn over, so that the cladding debris inside the small basket is poured into the cladding barrel;

[0020] S3: When the cladding barrel receives the cladding poured from the small basket many times to a certain volume, operate the manipulator, pull the pull rod of the mounting plate, so that the positioning barrel and the cladding barrel are horizontally transported to the hoisting position of the cladding barrel. The mounting plate contacts the stop block B. Use the crane in the hot cell to lift the cladding barrel away for subsequent processing, and re-place a new cladding barrel.

[0021] The remarkable effect of the present invention is that: the present invention provides a tipping device and method for a small basket of a post-treatment dissolver. This device can utilize the gear-rack mechanism. By operating the manipulator on the hot cell wall, the small basket and the tipping barrel in the hot cell can be turned over together, and the cladding debris in the small basket is poured into the lower cladding barrel, realizing the treatment of the cladding debris inside the small basket, achieving the purpose of reusing the small basket, and finally realizing the reduction of production costs and the reduction of the generation amount of high-level radioactive waste. Description of the Drawings

[0022] Figure 1 Overall schematic diagram of this patent;

[0023] Figure 2 Structural diagram of the T-shaped limiting device;

[0024] Figure 3 Top view of the mounting plate, positioning barrel and cladding barrel;

[0025] Figure 4 Side view of the mounting plate, positioning barrel and cladding barrel;

[0026] Figure 5 Schematic diagram of parts of the tipping device for the small hanging basket

[0027] In the figure: 1 - bottom plate; 2 - support frame; 3 - roller; 4 - guiding and limiting block; 5 - rack; 6 - lifting lug; 7 - gear; 8 - pull rod; 9 - tipping bucket; 10 - small hanging basket; 11 - rotating shaft; 12 - support block; 13 - limiting shaft; 14 - rotating shaft; 15 - stop baffle; 16 - railing; 17 - mounting plate; 18 - positioning bucket; 19 - guiding seat; 20 - cladding bucket; 21 - stop block A; 22 - linear guide rail; 23 - support seat; 24 - bearing; 25 - stop block B, 26 - mounting plate pull rod. Detailed implementation manners

[0028] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementations disclosed below.

[0029] The terms used in one or more embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present application. The singular forms "a", "the", and "said" used in one or more embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] It should be understood that although the terms first, second, etc. may be used in one or more embodiments of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0031] The present patent will be further described below in conjunction with the accompanying drawings;

[0032] A tipping device for a small hanging basket of a post-treatment dissolver, comprising a bottom plate 1, a support frame 2, a tipping bucket 9, a positioning bucket 18, and a cladding bucket 20;

[0033] As Figure 1 shown, a linear guide rail 22 is installed on the bottom plate 1 to provide support for the upper cladding bucket 20 and guiding for horizontal linear movement. The linear guide rail 22 comprises two guide rails in total; a mounting plate 17 is installed on the linear guide rail 22;

[0034] The support frame 2 is welded to the bottom plate 1. It has four struts, and the upper part of the support frame 2 is provided with a pull rod 8. The pull rod 8 is connected to and drives the left end of the rack 5. The upper surface of the rack 5 contacts the gear 7, and the roller 3 supports the lower surface of the rack 5 and reduces the friction of the horizontal movement of the rack 5. There are two racks 5, one on the left and one on the right, and one rack 5 corresponds to one gear 7 and three rollers 3.

[0035] It also includes a guiding and limiting block 4. The guiding and limiting block 4 plays a role in limiting the rack 5 to prevent the rack 5 from slipping out of the groove during the process of being pulled by the pull rod 8; and it serves as the mechanical limit for the forward and reverse positions of the tipping bucket 9.

[0036] The upper part of the support frame 2 is provided with a lifting lug 6 for hoisting the entire device.

[0037] There are two support seats 23 on the upper part of the support frame 2, which are located inside the two gears 7. The rotating shaft 11 is welded to the outer wall of the tipping bucket 9 and passes through the support seat 23 through the bearing 24 and is connected to the gear 7; when the pull rod 8 is pulled, it drives the rack 5 to move, and then drives the gear 7 to rotate, and then drives the rotating shaft 11 to rotate, finally causing the tipping bucket 9 to flip; the bearing 24 is used to support and limit the rotating shaft 11.

[0038] As Figure 5 shown, stop blocks A21 and stop block B25 are respectively provided at both ends of the linear guide rail 22, which have the functions of positioning and limiting, can prevent the cladding bucket 20 from slipping out of the track, and can also serve as the positioning blocks for the tipping position and the lifting position of the small hanging basket 10.

[0039] The mounting plate 17 is installed on the linear guide rail 22. A positioning bucket 18 is installed above it. A guiding seat 19 is placed in the positioning bucket 18, and the cladding bucket 20 is installed through the guiding seat 19; the cladding bucket 20 is located directly below the tipping bucket 9 and can receive the cladding debris poured down from the small hanging basket 10 above. By pulling the mounting plate pull rod 26 on the mounting plate 17 with a manipulator, the positioning bucket 18 and the cladding bucket 20 inside it can be horizontally moved (from the tipping position to the lifting position).

[0040] The small hanging basket 10 is placed inside the tipping bucket 9, and both it and the tipping bucket 9 are cylindrical. The side wall and bottom of the small hanging basket 10 are both meshes, and the inside contains cladding debris. The small hanging basket 10 is limited by two T-shaped limiting devices. The T-shaped limiting devices include a limiting state and an open state; when the two T-shaped limiting devices are rotated to the limiting state, the tipping bucket 9 can drive the small hanging basket 10 to flip and pour the cladding debris inside the small hanging basket 10 into the cladding bucket 20.

[0041] As Figure 2As shown in the figure, the T-shaped limit device includes a stop plate 15 and a support block 12. The rotating shaft 14 connects the stop plate 15 and the support block 12. There are two positioning holes on the stop plate 15, namely the open position positioning hole and the limit positioning hole. The limit shaft 13 is fixed on the support block 12. When the limit shaft 13 is assembled with the open position positioning hole, the stop plate 15 is located outside the tipping bucket 9 and does not limit the small hanging basket 10. When the limit shaft 13 is assembled with the limit positioning hole, the stop plate 15 is located at the upper inner side of the tipping bucket 9, thus limiting the small hanging basket 10. The support block 12 is welded to the tipping bucket 9. A railing 16 is also installed on the stop plate 15. When it is necessary to turn over the small hanging basket 10, the stop plate 15 is driven by the railing 16 to rotate around the rotating shaft 14, while the support block 12 remains stationary. The limit shaft 13 changes from the open position positioning hole to the limit positioning hole. When the limit shafts 13 of the two T-shaped limit devices are both in the limit positioning holes, the small hanging basket 10 is limited by the stop plate 15 of the T-shaped limit device, ensuring that it will not fall out during the process of turning over with the tipping bucket 9. The small hanging basket 10 turns over, so as to pour the internal cladding debris into the tipping bucket 9.

[0042] During specific operation, the small hanging basket 10 is alone in the hot cell and contains cladding debris. When it is found that the volume of the cladding debris in the small hanging basket 10 in the hot cell reaches the volume that needs to be replaced, the device is lifted into the hot cell using the lifting lug 6. Using a numerical control crane and a gravity lifting tool, the small hanging basket 10 is lifted and installed above the tipping bucket 9, and the two T-shaped limit devices are put into the limit state by using a manipulator.

[0043] Operate the manipulator in the hot cell, pull the pull rod 8, drive the rack 5 to move horizontally, and then drive the gear 7 to make a circular motion. At this time, the rollers 3 and the guiding and limiting block 4 can support and limit the rack 5. The limiting blocks on both sides of the rack 5 prevent the rack from coming out of the groove and serve as the positioning for the lifting position and tipping position of the tipping bucket 9. The gear 7 drives the rotating shaft 11, and then drives the tipping bucket 9 to turn over, so that the cladding debris inside the small hanging basket 10 is poured into the cladding bucket 20.

[0044] When the cladding bucket 20 receives the cladding poured from the small hanging basket 10 multiple times to a certain volume, operate the manipulator, pull the mounting plate pull rod 26 of the mounting plate 17, so that the positioning bucket 18 and the cladding bucket 20 are horizontally transported to the lifting position of the cladding bucket 20. The mounting plate 17 contacts the stop block B25, and use the crane in the hot cell to lift the cladding bucket 20 away for subsequent processing, and re-place a new cladding bucket 20.

[0045] The small hanging basket tipping device has a simple and reliable structure, can be applied in a hot cell, requires no maintenance, and can be operated remotely. By combining a rack and pinion mechanism with a manipulator, it can achieve the tipping of the small hanging basket in the bucket along the rotating shaft, and a mechanical stop is set to prevent the small hanging basket from falling off. The positioning bucket, guide seat, and cladding bucket below can be horizontally transported along a linear guide rail, and positioning and limiting stop blocks are set to realize the tipping of the spent cladding in the small hanging basket into the cladding bucket below. After the cladding bucket receives the cladding debris to a certain volume, the cladding bucket and the internal cladding debris are treated as high-level radioactive waste, and a new cladding bucket is replaced. Finally, the repeated use of the small hanging basket can be achieved, reducing the production cost and the generation amount of high-level radioactive waste.

[0046] The above are only the preferred embodiments of this patent and are not intended to limit this patent. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this patent shall be included within the protection scope of this patent.

[0047] It should be noted that for the foregoing method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0048] In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0049] The preferred embodiments of this application disclosed above are only used to help explain this application. The alternative embodiments do not elaborate on all the details and do not limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this application. This application selects and specifically describes these embodiments to better explain the principle and practical application of this application, so that those skilled in the art can understand and utilize this application well.

Claims

1. A tilting device for a small basket of a post-treatment dissolver, characterized in that: It includes a bottom plate (1), a support frame (2), a tipping bucket (9), a positioning bucket (18), and a cladding bucket (20); a linear guide rail (22) is installed on the bottom plate (1), and a mounting plate (17) is installed on the linear guide rail (22); the support frame (2) is welded to the bottom plate (1), and its upper part is provided with a pull rod (8). The pull rod (8) is connected to and drives the left end of the rack (5), and the upper surface of the rack (5) contacts the gear (7), while the roller (3) supports the lower surface of the rack (5); a rotating shaft (11) is welded to the outer wall of the tipping bucket (9) and is connected to the gear (7); the mounting plate (17) is installed on the linear guide rail (22), and a positioning bucket (18) is installed above it. The cladding bucket (20) is installed in the positioning bucket (18); a small hanging basket (10) is installed on the upper part of the tipping bucket (9). The small hanging basket (10) contains cladding debris inside, and two T-shaped limiting devices are used to limit it.

2. The tilting device for the small hanging basket of the post-treatment dissolver according to claim 1, characterized in that: There are two racks (5) in total, one on the left and one on the right, and one rack (5) corresponds to one gear (7) and three rollers (3).

3. The tipping device for the small hanging basket of the post-treatment dissolver according to claim 1, characterized in that: It also includes a guiding and limiting block (4). The guiding and limiting block (4) plays a role in limiting the rack (5) to prevent the rack (5) from slipping out of the groove during the process of being pulled by the pull rod (8).

4. A tilting device for a small basket of a post-treatment dissolver according to claim 1, characterized in that: The upper part of the support frame (2) is provided with a lifting lug (6).

5. A tipping device for a small basket of a post-treatment dissolver according to claim 1, characterized in that: Stop blocks A (21) and stop blocks B (25) are respectively provided at both ends of the linear guide rail (22).

6. The tilting device for the small basket of the post-treatment dissolver according to claim 1, characterized in that: There are two support seats (23) on the upper part of the support frame (2), which are located inside the two gears (7). The rotating shaft (11) is fixed on both sides of the tipping bucket (9) and passes through the support seat (23) through bearings (24) and is connected to the gear (7).

7. A tipping device for a small basket of a post-treatment dissolver according to claim 1, characterized in that: A guiding seat (19) is placed in the positioning bucket (18), and the cladding bucket (20) is installed through the guiding seat (19).

8. A tipping device for a small basket of a post-treatment dissolver according to claim 1, characterized in that: The T-shaped limiting device includes a stop baffle (15), a support block (12), a rotating shaft (14) connecting the stop baffle (15) and the support block (12). There are an open position positioning hole and a limiting positioning hole on the stop baffle (15); and a limiting shaft (13) is fixed on the support block (12); the support block (12) is welded to the tipping bucket (9); a railing (16) is also installed on the stop baffle (15).

9. A tipping device for a small basket of a post-treatment dissolver according to claim 1, characterized in that: There is a mounting plate pull rod (26) on the mounting plate (17).

10. A method for using a tipping device for a small basket of a post-treatment dissolver, characterized in that: It includes the following steps: S1: The small hanging basket (10) is alone in the hot cell and contains cladding debris. When it is found that the volume of the cladding debris in the small hanging basket (10) in the hot cell reaches the volume that needs to be replaced, use the lifting lug (6) to hoist this device into the hot cell: hoist and install the small hanging basket (10) inside the tipping bucket (9) to make the two T-shaped limiting devices in a limiting state; S2: Pull the pull rod (8) to drive the rack (5) to move horizontally, and then drive the gear (7) to make a circular motion. The gear (7) drives the rotating shaft (11), and then drives the tipping bucket (9) to flip, so that the cladding debris inside the small hanging basket (10) is poured into the cladding bucket (20). S3: When the cladding bucket (20) receives the cladding poured by the small hanging basket (10) multiple times until it reaches a certain volume, operate the manipulator to pull the mounting plate tie rod (26) of the mounting plate (17), so that the positioning bucket (18) and the cladding bucket (20) are horizontally transported to the hoisting position of the cladding bucket (20). The mounting plate (17) contacts the stop block B (25). Use the crane in the hot cell to lift the cladding bucket (20) away for subsequent processing, and re-place a new cladding bucket (20).

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