CN117690625A - Collecting and storing tool for high-level waste and using method thereof - Google Patents
Collecting and storing tool for high-level waste and using method thereof Download PDFInfo
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- CN117690625A CN117690625A CN202311434822.6A CN202311434822A CN117690625A CN 117690625 A CN117690625 A CN 117690625A CN 202311434822 A CN202311434822 A CN 202311434822A CN 117690625 A CN117690625 A CN 117690625A
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- Prior art keywords
- collecting
- tool
- fuel
- level waste
- storage
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- 239000002927 high level radioactive waste Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000000446 fuel Substances 0.000 claims description 52
- 239000002915 spent fuel radioactive waste Substances 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 230000007306 turnover Effects 0.000 claims 6
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
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Abstract
The utility model provides a collection storage instrument of high level waste, this collection storage instrument of high level waste includes storage container, simulation upper tube seat's roof, turns over board, pivot pin, runing rest and two twistlock devices. The roof is located the top of storage container and is equipped with a plurality of pinholes. The turning plate is positioned in the middle of the storage container and is fixedly connected with a rotating pin. When the turning plate is in a closed state, the part of the storage container, which is positioned on the side, away from the top plate, of the turning plate and the turning plate form a containing space for containing high-level waste, and when the turning plate is in an open state, the high-level waste positioned on the side, facing the top plate, of the turning plate can enter the containing space. The rotating bracket is configured to control the opening and closing of the turning plate through rotation. The two twist-lock devices are symmetrically arranged on two opposite sides of the top plate and are configured to be connected with the carbon rod. The collecting and storing tool is arranged to be an openable and closable closed space, so that underwater collecting, storing and transferring can be provided for high-level waste.
Description
Technical Field
The application belongs to the technical field of fuel assembly repair, and particularly relates to a collecting and storing tool for high-level waste and a using method thereof.
Background
A nuclear fuel assembly refers to a complete set of fuel elements assembled together, consisting of fuel rods and a fuel skeleton. The fuel skeleton determines the overall shape structure and strength and consists of an upper tube seat, a control rod guide tube, a lower tube seat, a positioning grid and other parts. Taking AP1000 as an example, an upper tube seat of a fuel assembly of the AP1000 is connected with 24 control rod guide tubes in an expanded mode through locking tubes, and the locking tubes are sleeves with thin walls, so that the weight is light. The conventional AP1000 spent fuel repair process comprises the steps of removing the upper tube seat, replacing a designated fuel rod and reinstalling the upper tube seat. The core of the upper tube seat disassembly and assembly is to disassemble an old locking tube and install a new locking tube, and the old locking tube is intended to collect and store high-level wastes. In addition, other light, thin and high level wastes such as expanded pipe damage excision, strip fragments and the like may exist during spent fuel repair.
To reduce the dosage to which the operator is exposed, the collection, storage and transportation operations are performed under a sufficiently shielded water layer for high level waste. The high-level waste generated by repairing the multiple groups of spent fuel is fixedly stored in the spent fuel pool for a long time after being collected, the storage container cannot interfere the operation of fuel components and the like in the spent fuel pool, and the storage container is easy to sink into the spent fuel storage grillwork. The spent fuel repair is carried out at the middle height position of the new fuel lifter, the risk of forming foreign matters by falling in the grabbing process of high-level foreign matters such as old locking pipes is reduced, the collecting operation distance is shortened as much as possible, and the storage container is required to be lifted to the same elevation of the fuel upper pipe seat from the spent fuel storage grid and hung and fixed. In addition, the spent fuel pool is characterized in that the cooling water flows upwards from the bottom of the spent fuel grillwork due to decay heat of the spent fuel assembly, and the cooling water is closed during normal storage and opened during collection in order to prevent light and thin objects stored in the container from being carried out of the container by the water flow to form foreign matters.
Disclosure of Invention
In view of the above, embodiments of the present application have been made in an effort to provide a collecting and storing tool for high level waste and a method of using the same, which can realize a state in which the collecting and storing tool is closed during normal storage of the high level waste and is re-opened during the collection of the high level waste by providing the collecting and storing tool as an openable and closable closed space.
The first aspect of the application provides a high level waste collection and storage tool comprising a storage container, a top plate simulating an upper tube seat, a turning plate, a rotating pin, a rotating bracket and two rotating lock devices. The top plate of the simulated upper tube seat is positioned at the top of the storage container and is provided with a plurality of pin holes. The plurality of pin holes in the top plate are used to position a gripper of the spent fuel assembly operation tool. The turning plate is positioned in the middle of the storage container and is fixedly connected with a rotating pin. When the turning plate is in a closed state, the part of the storage container, which is positioned on the side, away from the top plate, of the turning plate and the turning plate form a containing space for containing high-level waste, and when the turning plate is in an open state, the high-level waste positioned on the side, facing the top plate, of the turning plate can enter the containing space. The rotary bracket is provided with a rotary pin mounting hole matched with the rotary pin. The rotating bracket is connected with the top plate and the turning plate. The rotating bracket is configured to control the opening and closing of the turning plate through rotation. The two twist-lock devices are symmetrically arranged on two opposite sides of the top plate and are configured to be connected with a carbon rod with a twist-lock head.
In the scheme, the turning plate and the rotating support are arranged in the collecting and storing tool, and the rotating support controls the turning plate to be opened and closed through rotation, so that the collecting and storing tool is an openable closed container, and meanwhile, the collecting and storing tool has the functions of closed opening and closing and underwater collecting and storing high-level waste. In addition, through setting up the roof of simulation upper tube seat in collecting the storage tool, realized the long-range deep underwater hoist operation of spent fuel subassembly operating tool, through setting up the remote shallow underwater hoist operation of carbon pole that has realized of two symmetrical arrangement's twistlock device to make this collect the storage tool possess the long-range transportation ability under water, including different spent fuel storage grillwork, between spent fuel storage grillwork and fuel lifter, fuel lifter and the collection stores pylon.
In one embodiment of the present application, the storage container is positioned within the spent fuel storage rack and the top of the top plate protrudes from the top of the spent fuel storage rack when the high level waste is collected and stored underwater.
In one embodiment of the present application, the flap is located in the area with the water flow facing downwards when in the open state.
In one embodiment of the present application, the storage container, the top plate, the flap, the swivel mount, and any of the two twist-lock devices are connected by welding.
A second aspect of the present application provides a method of using a high level waste collection and storage tool, the method of using the high level waste collection and storage tool comprising: replacing the upper stop of the fuel lifter with a middle stop; grabbing a top plate of a high level waste collecting and storing tool of the embodiment of the application by using a grabbing tool of a spent fuel assembly operation tool, and hoisting the collecting and storing tool from a spent fuel storage grid to a fuel basket of a fuel lifter; lifting the fuel lifter to a middle position, connecting a carbon rod with a rotary lock head with a rotary lock device in a collecting and storing tool, lifting the collecting and storing tool from the fuel lifter, and hanging the collecting and storing tool to a collecting hanger so that a top plate in the collecting and storing tool and a fuel upper tube seat are on the same elevation; grabbing high-level waste by using a grabbing tool, positioning the high-level waste to a collecting and storing tool, pressing down a side plate in the collecting and storing tool to open a turning plate, releasing the high-level waste, and automatically closing the turning plate after lifting the grabbing tool; extracting the collecting and storing tool from the collecting hanger, transferring the collecting and storing tool to a fuel basket of the fuel lifter, and lowering the fuel lifter to the bottom after the spin lock connection is released; the gripper of the spent fuel assembly operation tool is used for gripping the collecting and storing tool, and the collecting and storing tool is lifted from the fuel basket of the fuel lifter to the spent fuel storage grid for storage.
Drawings
Fig. 1 is a schematic side view of a high level waste collection and storage tool according to an embodiment of the present disclosure.
FIG. 2 is a schematic top view of the high level waste collection and storage tool of the embodiment of FIG. 1.
Fig. 3 is a schematic flow chart of a method for using a tool for collecting and storing high level waste according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Fig. 1 is a schematic side view of a high level waste collection and storage tool according to an embodiment of the present disclosure. FIG. 2 is a schematic top view of the high level waste collection and storage tool of the embodiment of FIG. 1.
As shown in fig. 1 and 2, the high level waste collection and storage tool 10 includes a storage container 1, a top plate 2 simulating an upper tube seat, a flap 3, a rotating pin 4, a rotating bracket 5, and two twist-lock devices 6. The top plate 2 simulating the upper tube seat is positioned at the top of the storage container 1 and is provided with a plurality of pin holes. The plurality of pin holes in the top plate 2 are used to locate the grippers of the spent fuel assembly handling tool. The turning plate 3 is positioned in the middle of the storage container 1 and is fixedly connected with a rotary pin 4. When the turning plate 3 is in a closed state, the part of the storage container 1, which is positioned on the side of the turning plate 3, which is away from the top plate 2, and the turning plate 3 form a containing space for containing high-level waste, and when the turning plate 3 is in an open state, the high-level waste positioned on the side of the turning plate 3, which is facing the top plate 2, can enter the containing space. The rotary bracket 5 is provided with a rotary pin mounting hole which is matched with the rotary pin 4. The rotating bracket 5 is connected with the top plate 2 and the turning plate 3. The swivel bracket 5 is configured to control the opening and closing of the flap 3 by rotation. Two twist-lock devices 6 are symmetrically arranged on opposite sides of the top plate 2, and the two twist-lock devices 6 are configured to be connected with a carbon rod with a twist-lock head. Thus, through setting up board 3 and runing rest 5 in collecting the storage instrument 10, runing rest 5 turns over the opening and closing of board 3 through rotatory control for collecting the closed container that storage instrument 10 can open and shut, has possessed airtight function of opening and shutting simultaneously and has collected under water and has stored high-level waste's function. In addition, through setting up the roof 2 of simulation upper tube seat in collecting and storing the instrument 10, realized the long-range deep underwater hoist operation of spent fuel subassembly operating tool, through setting up the remote shallow underwater hoist operation of carbon pole that has realized through setting up two symmetrical arrangement's twistlock device 6 to make this collecting and storing instrument 10 possess the long-range transportation ability under water, including different spent fuel storage grillwork, spent fuel storage grillwork and between fuel lifter, fuel lifter and the collection stores pylon.
It should be noted that the turning plate 3 and the rotating pin 4 may be welded integrally, and the turning plate 3 may be opened in a remote counterclockwise rotation. The high level waste may be high level waste generated by multiple sets of spent fuel repair.
In the collecting and storing tool provided in at least one embodiment of the present application, when collecting and storing high level waste underwater, the storage container 1 is located in the spent fuel storage rack, and the top of the top plate 2 protrudes from the top of the spent fuel storage rack. Therefore, the collecting and storing tool can be directly sunk into the spent fuel storage grillwork and the new fuel lifter fuel basket and is hung and supported by the top plate 2, so that the spent fuel storage grillwork is stored, and the protruding height does not interfere with normal fuel operation and lifting operation of the new fuel lifter.
In the collecting and storing tool provided in at least one embodiment of the present application, the flap 3 is located in a downward water flow area when in an open state. Therefore, the turning plate 3 can be opened only in the downward water flow area of the fuel lifter, so that the phenomenon that light and thin objects are accidentally carried out by cooling water flow to form foreign matters is avoided, and the collection and storage of light and thin high-level wastes are realized.
In the collecting and storing tool provided in at least one embodiment of the present application, the storage container 1, the top plate 2, the turning plate 3, the rotating bracket 5, and any connected parts of the two twist-lock devices 6 are connected by welding. Therefore, the risk of introducing foreign matters by the whole welding assembly of the collecting and storing tool is avoided.
Fig. 3 is a schematic flow chart of a method for using a tool for collecting and storing high level waste according to an embodiment of the present application. As shown in fig. 3, the method for using the high level waste collection and storage tool comprises the following steps.
S10: the upper stop of the fuel lifter is replaced with a middle stop.
S20: a gripper using a spent fuel assembly handling tool grabs the top plate of a high level waste collection storage tool of an embodiment of the present application and lifts the collection storage tool from the spent fuel storage grid to the fuel basket of the fuel lifter.
S30: the fuel lifter is lifted to the middle position, a carbon rod with a rotary lock head is connected with a rotary lock device in the collecting and storing tool, the collecting and storing tool is lifted out of the fuel lifter, and the collecting and storing tool is hung to a collecting hanging frame, so that a top plate in the collecting and storing tool and a fuel upper tube seat are on the same elevation.
S40: the grabbing tool is used for grabbing high-level waste, the high-level waste is positioned to the collecting and storing tool, the side plates in the collecting and storing tool are pressed down to open the turning plate, the high-level waste is released, and the turning plate is automatically closed after the grabbing tool is lifted.
S50: and extracting the collecting and storing tool from the collecting hanger, transferring the collecting and storing tool to a fuel basket of the fuel lifter, and lowering the fuel lifter to the bottom after the twist-lock connection is released.
S60: the gripper of the spent fuel assembly operation tool is used for gripping the collecting and storing tool, and the collecting and storing tool is lifted from the fuel basket of the fuel lifter to the spent fuel storage grid for storage.
It should be noted that, the usage method of the high level waste collecting and storing tool is the usage method corresponding to the high level waste collecting and storing tool provided in the above embodiment of the present application, and reference may be made to the corresponding description in the high level waste collecting and storing tool provided in the above embodiment, so that at least corresponding technical effects can be achieved, which is not repeated herein.
It should be noted that, the combination of the technical features in the embodiments of the present application is not limited to the combination described in the embodiments of the present application or the combination described in the specific embodiments, and all the technical features described in the present application may be freely combined or combined in any manner unless contradiction occurs between them.
The above embodiments are only preferred embodiments of the present application and are not intended to limit the present application, and any modifications, equivalents, etc. that fall within the spirit and principles of the present application are intended to be included in the scope of the present application.
Claims (5)
1. A high level waste collection and storage tool comprising:
a storage container;
a top plate simulating an upper tube seat, which is positioned at the top of the storage container and provided with a plurality of pin holes, wherein the pin holes on the top plate are used for positioning a gripping apparatus of a spent fuel assembly operation tool;
the turnover plate is positioned in the middle of the storage container and is fixedly connected with a rotating pin, wherein when the turnover plate is in a closed state, a part of the storage container positioned at one side of the turnover plate, which is away from the top plate, and the turnover plate form an accommodating space for accommodating high-level waste, and when the turnover plate is in an open state, the high-level waste positioned at one side of the turnover plate, which faces the top plate, can enter the accommodating space;
the rotating bracket is provided with a rotating pin mounting hole matched with the rotating pin, is connected with the top plate and the turning plate and is configured to control the turning plate to be opened and closed through rotation; and
the two rotary locking devices are symmetrically arranged on two opposite sides of the top plate and are configured to be connected with a carbon rod with a rotary locking head.
2. The collecting and storing tool according to claim 1, wherein,
when the high level waste is collected and stored underwater, the storage container is positioned in the spent fuel storage grillwork, and the top of the top plate protrudes out of the top of the spent fuel storage grillwork.
3. The collecting and storing tool according to claim 1, wherein,
the turning plate is positioned in a downward water flow area when in an open state.
4. The collecting and storing tool according to claim 1, wherein,
the storage container, the top plate, the turning plate, the rotating bracket and any connected parts of the two spin lock devices are connected in a welding mode.
5. A method of using a high level waste collection and storage tool, comprising:
replacing the upper stop of the fuel lifter with a middle stop;
grasping a top plate of a high level waste collection and storage tool of any one of claims 1 to 4 using a gripper of a spent fuel assembly handling tool and lifting the collection and storage tool from a spent fuel storage grid to a fuel basket of a fuel elevator;
lifting the fuel lifter to a middle position, connecting a carbon rod with a rotary lock head with a rotary lock device in the collecting and storing tool, lifting the collecting and storing tool from the fuel lifter, and hanging the collecting and storing tool to a collecting hanger so that a top plate in the collecting and storing tool and a fuel upper tube seat are on the same elevation;
grabbing high-level waste by using a grabbing tool, positioning the high-level waste to the collecting and storing tool, pressing down a side plate in the collecting and storing tool to open the turning plate, releasing the high-level waste, and automatically closing the turning plate after lifting the grabbing tool;
extracting the collecting and storing tool from the collecting hanger, transferring the collecting and storing tool to a fuel basket of the fuel lifter, and lowering the fuel lifter to the bottom after the unscrewing connection;
and grabbing the collecting and storing tool by using a gripping tool of the spent fuel assembly operation tool, and lifting the collecting and storing tool from a fuel basket of the fuel lifter to the spent fuel storage grid for storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311434822.6A CN117690625A (en) | 2023-10-31 | 2023-10-31 | Collecting and storing tool for high-level waste and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311434822.6A CN117690625A (en) | 2023-10-31 | 2023-10-31 | Collecting and storing tool for high-level waste and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117690625A true CN117690625A (en) | 2024-03-12 |
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ID=90134078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311434822.6A Pending CN117690625A (en) | 2023-10-31 | 2023-10-31 | Collecting and storing tool for high-level waste and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117690625A (en) |
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2023
- 2023-10-31 CN CN202311434822.6A patent/CN117690625A/en active Pending
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