Container for storing and transporting damaged fuel elements

Abstract

The invention provides a damaged fuel element storage and transportation container which comprises a storage container body, the storage container body comprises a storage barrel, an inner sleeve part and a sealing part, the inner sleeve part is arranged in the storage barrel, a plurality of storage cavities are formed in the inner sleeve part, the storage cavities are used for storing damaged elements, and the sealing part is arranged in the storage barrel; the sealing plug is arranged at the top of the storage container and is used for sealing the storage barrel; the storage container is detachably arranged in the transportation container; the device has the beneficial effects that damaged elements are stored in a sealed mode through the storage container, the storage container is stored through the transportation container, double-layer protection of the damaged fuel elements is achieved, the radiation shielding performance of the damaged fuel elements can be improved, and harm to operators in the transportation process is reduced; the protection and sealing performance of the damaged fuel element is improved, the probability of leakage of the damaged fuel element in the transportation process is reduced, and the safety of operators is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of nuclear power equipment, and specifically relates to a damaged fuel element storage and transportation container. Background Art

[0002] The damaged fuel element storage container is one of the key equipment in the in-plant transportation process of damaged elements of research reactors. It is mainly used to store damaged fuel elements in the research reactor preservation pool, and is used together with the damaged fuel element transport container to realize the in-plant transportation process of damaged elements. Due to the high radioactivity of damaged fuel elements, if there is no good sealing protection during the transportation process, it is easy to cause safety hazards such as radiation safety, criticality safety, and thermal safety. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In order to solve the above problems, the present application provides a damaged fuel element storage and transportation container, comprising:

[0005] A storage container, the storage container comprising a storage cylinder, an inner set and a sealing member, the inner set being arranged inside the storage cylinder, the inner set being provided with a plurality of storage cavities, the storage cavities being used to store damaged original parts, the sealing plug being arranged at the top of the storage container, and being used to seal the storage cylinder;

[0006] The transport container is a storage container that can be detachably arranged inside the transport container.

[0007] Optionally, the inner kit includes:

[0008] A lower grid plate, the lower grid plate is arranged inside the storage cylinder;

[0009] An upper grid plate, the upper grid plate is arranged inside the storage cylinder and above the lower grid plate; the lower grid plate and the upper grid plate are correspondingly provided with at least one placement hole;

[0010] An inner sleeve, wherein the inner sleeve is arranged between the upper grid plate and the lower grid plate, and the interior of the inner sleeve is connected with the placement hole, and is used for storing damaged fuel elements.

[0011] Optionally, the sealing element comprises:

[0012] A sealing plug, which is disposed in the storage cylinder and is located above the upper grid plate;

[0013] A sealing cover is arranged on the storage cylinder and is located above the sealing plug. The sealing cover is provided with a first lifting ear.

[0014] Optionally, the sealing member further comprises:

[0015] Drainage structure: The drainage structure includes a drainage pipe, a drainage joint and a plug. A drainage passage is provided inside the storage cylinder along its axial direction. The drainage pipe passes through the drainage passage and is arranged on one side of the storage cylinder. The first end of the drainage pipe is located at the bottom of the storage cylinder. A side hole is provided on the first end of the drainage pipe. The drainage joint is provided on the side wall of the storage cylinder. The drainage joint is connected to the second end of the drainage pipe. The plug is connected to the drainage joint.

[0016] Quick-connect joint: a drying passage is provided on the sealing plug, the drying passage is connected with the drainage passage, and the quick-connect joint is arranged on the sealing plug and is connected with the drying passage.

[0017] Optionally, the transport container comprises:

[0018] Transport cylinder;

[0019] A conical base, the conical base is connected to the transport cylinder, and the conical base is provided with a discharge hole along the axial direction of the transport cylinder;

[0020] A blocking member, wherein a sliding hole is provided on the conical base along the radial direction of the transport cylinder, and the blocking member is slidably connected with the sliding hole;

[0021] An upper cover plate is arranged at one end of the transport cylinder away from the conical base, and a lifting ring is arranged on the upper cover plate.

[0022] Optionally, the transport cylinder comprises:

[0023] An inner cylinder, wherein a storage space for the storage container is provided inside the inner cylinder;

[0024] An outer cylinder, the outer cylinder is sleeved on the outer side of the inner cylinder;

[0025] A shielding layer, wherein the shielding layer is disposed between the inner cylinder and the outer cylinder;

[0026] An upper baffle, the upper baffle being disposed between the outer cylinder and the top of the inner cylinder, and the upper baffle being connected to the upper cover plate;

[0027] A lower baffle is disposed between the outer cylinder and the bottom of the inner cylinder, and the lower baffle is connected to the conical base.

[0028] Optionally, the shielding layer is made of lead.

[0029] Optionally, the blocking member includes:

[0030] A sealing head, the sealing head is slidably disposed in the sliding hole;

[0031] Handles, the handles are arranged on both sides of the sealing head,

[0032] A hook head is provided on the side of the handle away from the sealing head, and the hook head is connected to the conical base.

[0033] Optionally, a second lifting lug is provided on the outer circumference of the outer cylinder.

[0034] Optionally, an anti-drop end cover is provided on the outer cylinder and between the second lifting ears.

[0035] Beneficial Effects

[0036] A damaged fuel element storage and transport container provided in an embodiment of the present invention has the following beneficial effects: damaged elements are sealed and stored in a storage container, and stored in a transport container, thereby achieving double-layer protection for damaged fuel elements, improving the radiation shielding performance of damaged fuel elements, reducing injuries to operators during transportation, improving the protection and sealing performance of damaged fuel elements, reducing the probability of leakage of damaged fuel elements during transportation, improving the safety of operators, and greatly reducing safety hazards during transportation. The interior of the storage container can be drained, dried, sealed and leak-checked, and the storage container can be transferred to the transport container through remote operation, and the packaging of the transport container is completed, thereby finally realizing the transportation process of damaged fuel elements and ensuring that the dose received by operators is at a reasonable level during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A structural diagram of a storage container for storing and transporting damaged fuel elements of the present invention;

[0038] Figure 2 The invention provides a storage and transport container for damaged fuel elements. Figure 1 The local enlarged structure diagram at D in the middle;

[0039] Figure 3 The invention provides a storage and transport container for damaged fuel elements. Figure 1 Sectional structural diagram at AA in the middle;

[0040] Figure 4 A structural diagram of a transport container for storing and transporting damaged fuel elements of the present invention;

[0041] Figure 5 The invention provides a storage and transport container for damaged fuel elements. Figure 4 The local enlarged structure diagram at E in the middle;

[0042] Figure 6 The invention provides a storage and transport container for damaged fuel elements. Figure 4 Sectional structural diagram at BB in the middle;

[0043] Figure 7 The invention provides a storage and transport container for damaged fuel elements. Figure 4 Cross-sectional structural diagram at CC in the middle.

[0044] The reference numerals are:

[0045] 1. Storage container; 2. Storage cylinder; 3. Inner set; 4. Sealing element; 5. Transport container; 6. Lower grid; 7. Upper grid; 8. Inner sleeve; 9. Sealing plug; 10. Sealing cover; 11. First lifting ear; 12. Drainage structure; 13. Drain pipe; 14. Drainage joint; 15. Plug; 16. Quick connector; 17. Transport cylinder; 18. Conical base; 19. Sealing element; 20. Upper cover; 21. Lifting ring; 22. Inner cylinder; 23. Outer cylinder; 24. Shielding layer; 25. Upper baffle; 26. Lower baffle; 27. Sealing head; 28. Handle; 29. ​​Hook; 30. Second lifting ear; 31. Anti-drop end cover. DETAILED DESCRIPTION

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] See also Figure 1-7 As shown, according to an embodiment of the present application, a damaged fuel element storage and transportation container is provided, comprising:

[0051] A storage container 1, the storage container 1 comprises a storage cylinder 2, an inner set 3 and a sealing member 4, the inner set 3 is arranged inside the storage cylinder 2, a plurality of storage cavities are opened on the inner set 3, the storage cavities are used to store damaged originals, and the sealing plug 9 is arranged on the top of the storage container 1 to seal the storage cylinder 2;

[0052] The transport container 5 , the storage container 1 is detachably arranged inside the transport container 5 .

[0053] Specifically, the damaged fuel elements are placed in the storage container 1, which can store the damaged elements. The storage container 1 is then placed in the transport container 5. The damaged fuel elements can be transported within the field by transferring the transport container 5, which is convenient to operate. Moreover, the double-layer protection of the storage container 1 and the transport container 5 can improve the radiation shielding performance of the damaged fuel elements, reduce the harm to the operators during transportation, improve the protection and sealing performance of the damaged fuel elements, reduce the probability of leakage of the damaged fuel elements during transportation, improve the safety of the operators, and can greatly reduce the potential safety hazards during transportation.

[0054] The storage container 1 includes a storage cylinder 2, an inner sleeve 3 and a seal 4. The storage cylinder 2 is a barrel structure with a sealed bottom and an open top, so the inner sleeve 3 can be installed inside the storage container 1. The inner sleeve 3 is provided with a plurality of storage cavities for placing damaged fuel elements, which are used to fix the damaged fuel elements and improve the stability of the damaged fuel elements after placement. Furthermore, the number of storage cavities opened on the inner sleeve 3 is six, so six damaged fuel elements can be stored at the same time, thereby increasing the number of damaged fuel elements transported at the same time. The seal 4 is installed on the top of the storage cylinder 2. After the damaged fuel elements are placed inside the storage cylinder 2, the seal 4 can seal the storage cylinder 2 from the top to achieve radiation shielding of the damaged fuel elements inside and reduce the probability of radiation hazards to operators.

[0055] Among them, the materials of the storage cylinder 2 and the sealing member 4 are both 06Cr18Ni11Ti, and the effective shielding thickness is 309 mm, which can further improve the radiation shielding effect during use.

[0056] The inner kit 3 comprises:

[0057] A lower grid plate 6, wherein the lower grid plate 6 is arranged inside the storage cylinder 2;

[0058] An upper grid plate 7, the upper grid plate 7 is arranged inside the storage cylinder 2 and above the lower grid plate 6; the lower grid plate 6 and the upper grid plate 7 are correspondingly provided with at least one placement hole;

[0059] The inner sleeve 8 is arranged between the upper grid plate 7 and the lower grid plate 6. The interior of the inner sleeve 8 is connected with the placement hole and is used for storing damaged fuel elements.

[0060] Specifically, the inner set 3 includes a lower grid plate 6 installed inside the storage cylinder 2 and near the bottom position and an upper grid plate 7 near the top position. The placement holes are opened at the matching positions of the upper grid plate and the lower grid plate. An inner sleeve 8 is installed between the placement holes on the upper grid plate 7 and the lower grid plate 6. When placing, the damaged fuel element is placed into the inner sleeve 8 through the installation hole. The placement hole plays a guiding role in the placement of the damaged fuel element, thereby improving the placement efficiency. A storage cavity for placing the damaged fuel element is formed inside the inner sleeve 8. The setting of the inner sleeve 8 realizes the limiting and fixing of the outer circumferential surface of the damaged fuel element, improves the stability after placement, and can also isolate the damaged fuel elements in pairs to avoid mutual collision during transportation.

[0061] The size of the placement hole can be opened according to the size of the damaged fuel element to be placed, and the number of the placement holes can be determined according to the area occupied by one damaged fuel element on the upper grid plate 7 and the lower grid plate 8.

[0062] The number of the upper grid plate 7 and the lower grid plate 6 can be set to one or more, which can be selected according to actual use requirements.

[0063] Among them, the materials of the inner sleeve 8, the upper grid plate 7 and the lower grid plate 6 are all 06Cr18Ni11Ti, which has a better radiation shielding effect; further, the upper grid plate 7, the lower grid plate 6 and the inner sleeve 8 are welded.

[0064] The sealing member 4 comprises:

[0065] A sealing plug 9, wherein the sealing plug 9 is disposed in the storage cylinder 2 and is located above the upper grid plate 7;

[0066] The sealing cover 10 is arranged on the storage cylinder 2 and is located above the sealing plug 9 . The sealing cover 10 is provided with a first lifting ear 11 .

[0067] Specifically, the sealing member 4 includes a sealing plug 9 and a sealing cover 10. After the damaged fuel element is placed inside the storage cylinder 2, the sealing plug 9 is installed at the top opening of the storage cylinder 2, and the sealing plug 9 and the storage cylinder 2 are sealed and welded to enhance the sealing effect after installation and reduce the probability of radiation leakage. The sealing cover 10 is welded at the top opening of the storage cylinder 2 and is located above the sealing plug 9 to further enhance the sealing effect.

[0068] Among them, after the sealing plug 9 is installed, its bottom is located above the upper grid plate 7, and it is in contact with the upper grid plate 7 or there is a gap, which can limit and fix the top of the damaged fuel element placed in the inner sleeve 8, thereby improving the stability of the placement of the damaged fuel element after installation.

[0069] Among them, one end of the bottom of the sealing plug 9 is a conical structure, which is convenient for installing the sealing plug 9 into the storage cylinder 2. After the sealing plug 9 is installed inside the storage cylinder 2, its top is fixed to the storage cylinder 2 by welding to achieve sealing.

[0070] An annular stopper is installed between the sealing plug 9 and the upper grid plate 7. The annular stopper can be used to shield the gap between the sealing plug 9 and the storage cylinder 2 from radiation, thereby improving the safety of operators.

[0071] A first lifting lug 11 is installed on the sealing cover 10, which facilitates lifting and carrying the storage container 1 after the damaged fuel element is sealed. The first lifting lug 11 and the sealing cover 10 are welded into an integral structure through a reinforcing plate.

[0072] The seal 4 also includes:

[0073] Drainage structure 12: The drainage structure 12 includes a drainage pipe 13, a drainage joint 14 and a plug 15. A drainage passage is provided inside the storage cylinder 2 along its axial direction. The drainage pipe 13 passes through the drainage passage and is arranged on one side of the storage cylinder 2. The first end of the drainage pipe 13 is located at the bottom of the storage cylinder 2. A side hole is provided on the first end of the drainage pipe 13. The drainage joint 14 is provided on the side wall of the storage cylinder 2. The drainage joint 14 is connected to the second end of the drainage pipe 13. The plug 15 is connected to the drainage joint 14.

[0074] Quick-connect joint 16: A drying passage is provided on the sealing plug 9, and the drying passage is connected to the drainage passage. The quick-connect joint 16 is provided on the sealing plug 9 and is connected to the drying passage.

[0075] Specifically, after the sealing plug 9 is fixedly installed on the storage cylinder 2, the storage cylinder 2 can be drained through the drainage structure 12. The drainage structure 12 includes a drainage pipe 13, a drainage joint 14 and a plug 15. The drainage joint 14 is connected to the second end of the drainage pipe 13, and the drainage joint 14 is located at the upper middle part of the sealing plug 9. The drainage pipe 13 is vertically downwardly arranged along the inner side wall of the storage cylinder 2, and its bottom is connected to the bottom of the storage cylinder 2, which can realize the complete discharge of the internal liquid of the storage cylinder 2 and improve the drainage efficiency; the first end of the drainage pipe 13 is horizontally provided with a plurality of side holes at the bottom, so that when the first end of the drainage pipe 13 contacts the storage cylinder 2, it will not affect the discharge of the internal liquid, and will not affect the drainage efficiency. Moreover, during the drainage process, the quick-connect joint 16 is connected to the inside of the storage cylinder 2 through the dry passage, so that no negative pressure is generated inside the storage cylinder 2 during the drainage process, and the drainage is more convenient. After the drainage is completed, the pipeline of the compressed air system is connected to the quick-connect joint 16 to ventilate and dry the inside of the storage cylinder 2. After the drying is completed, the plug 15 is installed on the drainage joint 14 to achieve the sealing of the drainage joint 14, and the vacuum and helium flushing processes can be carried out; after the above operations are completed, the sealing cover 10 is welded to the sealing plug 9 and the storage cylinder 2 to achieve the overall sealing of the top opening of the storage cylinder 2, and the sealing performance is stronger.

[0076] When the storage cylinder 2 is vacuumed through the quick-connect joint 16, it is also possible to detect whether there is a leak in the storage cylinder 2, further preventing the possibility of radiation to the operator due to leakage and enhancing the sealing performance.

[0077] Among them, a through hole is opened on the side where the upper grid plate 7 and the lower grid plate 6 are connected to the storage cylinder 2, and the drain pipe 13 is arranged downward through the through hole along the side wall of the storage cylinder 2. At this time, there is a gap between the through hole and the drain pipe 13, which is convenient for the quick-connect joint to dry, vacuumize and flush with helium inside the storage cylinder 2.

[0078] The transport container 5 comprises:

[0079] Transport cylinder 17;

[0080] A conical base 18, wherein the conical base 18 is connected to the transport cylinder 17, and the conical base 18 is provided with a discharge hole along the axial direction of the transport cylinder 17;

[0081] A blocking member 19, wherein a sliding hole is provided on the conical base 18 along the radial direction of the transport cylinder 17, and the blocking member 19 is slidably connected with the sliding hole;

[0082] An upper cover plate 20 is disposed at one end of the transport cylinder 17 away from the conical base 18 , and a lifting ring 21 is disposed on the upper cover plate 20 .

[0083] Specifically, a space for placing the storage container 1 is provided inside the transport cylinder 17. The top of the transport cylinder 17 is sealed by an upper cover plate 20, and the bottom is connected to a conical base 18. A discharge hole and a sliding hole are provided on the conical base 18, and the discharge hole can be closed and opened by a sliding plugging member 19. When the storage container 1 needs to be placed into the transport cylinder 17, the sliding plugging member 19 is used to disengage it from the position of the discharge hole. At this time, the discharge hole is connected to the inside of the transport cylinder 17, and the storage container 1 can be placed into the transport cylinder 17 through the discharge hole. After placement, the sliding plugging member 19 blocks the discharge hole to achieve sealed covering of the storage container 1. By setting the transport container 5, the storage container 1 can be protected to prevent foreign objects from directly contacting the storage container 1 during transportation and causing collisions, thereby improving the safety of transportation.

[0084] Among them, by sliding the blocking member 19 inside the conical base 18, the inside of the transport cylinder 17 can be connected with the outside, and the storage container 1 can be stored and taken out of the transport cylinder 17 more conveniently, which is easy to operate.

[0085] Among them, the bottom of the conical base 18 is a conical structure, and the taper of the base is 1:2.4, which is convenient for aligning the bottom of the conical base 18 with the temporary storage wellhead, improving the convenience of operation and making the alignment more accurate. After the storage cylinder 2 storing the damaged fuel elements is transported to the target location, the bottom of the conical base 18 is centered with the temporary storage wellhead, and the sealing piece 19 is pulled to open the discharge hole, and the storage container 1 located inside the transport cylinder 17 can be slid out of the transport cylinder 17 and placed into the temporary storage well.

[0086] The lifting ring 21 is installed on the upper cover plate 20, and the lifting ring 21 can be used to lift and transport the device by lifting equipment during transportation. The transportation process is more convenient, and there is no need for close contact between operators, which reduces the probability of operators being exposed to radiation.

[0087] The lifting ring 21 is installed at the center of the upper cover plate 20. During installation, the lifting ring 21 is connected to the center thread of the upper cover plate 20, and then the two are welded into one by annular surfacing.

[0088] The transport cylinder 17 comprises:

[0089] An inner cylinder 22, wherein a storage space for the storage container 1 is provided inside the inner cylinder 22;

[0090] An outer cylinder 23, wherein the outer cylinder 23 is sleeved on the outer side of the inner cylinder 22;

[0091] A shielding layer 24, wherein the shielding layer 24 is disposed between the inner cylinder 22 and the outer cylinder 23;

[0092] An upper baffle plate 25, the upper baffle plate 25 is disposed between the outer cylinder 23 and the top of the inner cylinder 22, and the upper baffle plate 25 is connected to the upper cover plate 20;

[0093] The lower baffle plate 26 is disposed between the outer cylinder 23 and the bottom of the inner cylinder 22 , and the lower baffle plate 26 is connected to the conical base 18 .

[0094] The shielding layer 24 is made of lead.

[0095] Specifically, the shielding layer 24 is installed between the inner cylinder 22 and the outer cylinder 23. The shielding layer 24 is a shielding layer 24 made of annular lead material, which can reduce the radiation exposure of operators to the damaged fuel elements placed inside. The upper baffle 25 and the lower baffle 26 are both circular annular structures. The upper baffle 25 is welded between the inner cylinder 22 and the top of the outer cylinder 23, and the lower baffle 26 is welded between the inner cylinder 22 and the bottom of the outer cylinder 23, which can achieve sealing of the shielding layer 24.

[0096] The upper baffle plate 25 is connected to the upper cover plate 20 , and the upper cover plate 20 and the upper baffle plate 25 are fixedly connected by a plurality of threaded rods; the lower baffle plate 26 is connected to the conical base 18 by welding.

[0097] The blocking member 19 comprises:

[0098] A sealing head 27, wherein the sealing head 27 is slidably disposed in the sliding hole;

[0099] Handles 28, the handles 28 are arranged on both sides of the sealing head 27,

[0100] A hook head 29 is provided on the side of the handle 28 away from the sealing head 27 , and the hook head 29 is connected to the conical base 18 .

[0101] Specifically, the plugging member 19 includes a sealing head 27, a handle 28 and a hook head 29. When the sealing head 27 slides inside the conical base 18, the discharge hole can be blocked. The handles 28 are installed on both sides of the sealing head 27. Through the setting of the handles 28, it is convenient for the operator to pull the sealing head 27 to slide in the sliding hole of the conical base 18 to block and open the discharge hole, and the operation is more convenient. Furthermore, the handle 28 can be a plate-shaped structure or a rod-shaped structure.

[0102] Among them, the hook head 29 is installed on the handle 28 and can be connected to the bottom of the conical base 18 through a screw. That is to say, when the sealing head 27 needs to slide, the connection between the hook head 29 and the conical base 18 is opened by rotating the screw. At this time, the sealing head 15 can be pulled by the handle 28 to slide in the sliding hole to open the discharge hole, so that the storage container 1 can be placed into the transport cylinder 17 or the storage cylinder 2 can be taken out from the transport cylinder 17. After the operation is completed, the hook head 29 can be fixed to the conical base 18 by bolts, so that the sealing head 15 can be fixed. At this time, the sealing head 15 blocks the discharge hole to prevent the storage container 1 placed in the transport cylinder 17 from sliding out during transportation, thereby improving the safety of transportation.

[0103] The hook head 29 can be a plate-shaped structure or a rod-shaped structure, and can be bent when used.

[0104] A second lifting lug 30 is provided on the outer circumference of the outer cylinder 23 .

[0105] The outer cylinder 23 is provided with an anti-drop end cover 31 between the second lifting ears 30 .

[0106] Specifically, the provision of the second lifting ear 30 and the anti-detachment end cover 31 helps to improve the stability during the lifting process, reduce the possibility of object shaking and rotation, ensure the safety of lifting to a certain extent, and reduce the probability of accidents.

[0107] Working principle:

[0108] When the damaged fuel element is transported, the storage container 1 is first loaded into the transport container 5, and the transport container 5 is hoisted onto the anti-smashing platform. Then, the storage container 1 is hoisted out of the transport container 5, and the damaged fuel elements are hoisted into the storage cylinder 2 one by one remotely through professional tools. After the hoisting is completed, the sealing plug 9 is installed in the top of the storage cylinder 2, and the drainage joint 14 is connected to drain the inside of the storage cylinder 2 through the drainage pipe 13. After the drainage operation is completed, the pipeline of the compressed air system is connected to the quick-connect joint 16 to achieve the drainage operation. The storage cylinder 2 is ventilated and dried. After drying, the drainage joint 14 is sealed with a plug 15, and the sealing plug 9 and the storage cylinder 2 are welded to improve the sealing performance. After the welding is completed, the storage cylinder 2 is vacuumed and flushed with helium through the quick-connect joint 16. After testing for leakage, the sealing cover 10 is welded to the sealing plug 9 and the storage cylinder 2 to achieve the overall sealing of the top opening of the storage cylinder 2. After the above operations are completed, the sliding plug 19 puts the storage container 1 into the transport container 5 through the discharge hole, and the sliding plug 19 is again The discharge hole is blocked to prevent the storage container 1 from slipping out of the discharge hole during transportation, thereby improving transportation safety. Finally, the transport container 5 is transported to the top of the shaft, the conical base 18 is aligned with the shaft opening, and the sealing head 27 is slid again to open the discharge hole, and the damaged fuel element can be placed in the shaft, thereby completing the entire transportation process of the damaged element; the damaged element is sealed and stored by the storage container 1, and the transport container 5 stores the storage container 1, thereby achieving double-layer protection for the damaged fuel element, which can improve the radiation shielding performance of the damaged fuel element. It reduces the harm to operators during transportation, improves the protection and sealing performance of damaged fuel elements, reduces the probability of leakage of damaged fuel elements during transportation, improves the safety of operators, and can greatly reduce the potential safety hazards during transportation. It can drain, dry, seal and detect leaks inside the storage container 1, and then transfer the storage container 1 to the transport container 5 through remote operation, and complete the packaging of the transport container 5, finally realizing the transportation process of damaged fuel elements, and ensuring that the dose received by the operator is at a reasonable level during the operation.

[0109] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A damaged fuel element storage and transport container, characterized in that: include: A storage container (1), the storage container (1) comprising a storage cylinder (2), an inner sleeve (3) and a sealing member (4), the inner sleeve (3) being arranged inside the storage cylinder (2), the inner sleeve (3) being provided with a plurality of storage cavities, the storage cavities being used to store damaged originals, the sealing plug (9) being arranged at the top of the storage container (1) and being used to seal the storage cylinder (2); A transport container (5), wherein the storage container (1) is detachably arranged inside the transport container (5).

2. The damaged fuel element storage and transportation container according to claim 1, characterized in that: The inner set (3) comprises: A lower grid plate (6), wherein the lower grid plate (6) is arranged inside the storage cylinder (2); An upper grid plate (7), the upper grid plate (7) being arranged inside the storage cylinder (2) and located above the lower grid plate (6); the lower grid plate (6) and the upper grid plate (7) are provided with at least one placement hole correspondingly; An inner sleeve (8), the inner sleeve (8) is arranged between the upper grid plate (7) and the lower grid plate (6), the interior of the inner sleeve (8) is connected to the placement hole, and is used for storing damaged fuel elements.

3. The damaged fuel element storage and transportation container according to claim 2, characterized in that: The sealing member (4) comprises: A sealing plug (9), the sealing plug (9) being arranged in the storage cylinder (2) and located above the upper grid plate (7); A sealing cover (10), wherein the sealing cover (10) is arranged on the storage cylinder (2) and is located above the sealing plug (9), and a first lifting ear (11) is arranged on the sealing cover (10).

4. The damaged fuel element storage and transportation container according to claim 3, characterized in that: The sealing member (4) further comprises: Drainage structure (12): The drainage structure (12) comprises a drainage pipe (13), a drainage joint (14) and a plug (15); a drainage passage is provided inside the storage cylinder (2) along its axial direction; the drainage pipe (13) passes through the drainage passage and is arranged on one side of the storage cylinder (2); the first end of the drainage pipe (13) is located at the bottom of the storage cylinder (2); a side hole is provided on the first end of the drainage pipe (13); the drainage joint (14) is arranged on the side wall of the storage cylinder (2); the drainage joint (14) is connected to the second end of the drainage pipe (13); and the plug (15) is connected to the drainage joint (14); Quick-connect joint (16): A drying passage is provided on the sealing plug (9), the drying passage is connected to the drainage passage, and the quick-connect joint (16) is arranged on the sealing plug (9) and is connected to the drying passage.

5. The damaged fuel element storage and transportation container according to claim 1, characterized in that: The transport container (5) comprises: Transport cylinder (17); A conical base (18), the conical base (18) being connected to the transport cylinder (17), and the conical base (18) being provided with a discharge hole along the axial direction of the transport cylinder (17); A blocking member (19), wherein a sliding hole is provided on the conical base (18) along the radial direction of the transport cylinder (17), and the blocking member (19) is slidably connected to the sliding hole; An upper cover plate (20) is arranged at one end of the transport cylinder (17) away from the conical base (18), and a lifting ring (21) is arranged on the upper cover plate (20).

6. The damaged fuel element storage and transportation container according to claim 5, characterized in that: The transport cylinder (17) comprises: An inner cylinder (22), wherein a storage space for the storage container (1) is provided inside the inner cylinder (22); An outer cylinder (23), wherein the outer cylinder (23) is sleeved on the outer side of the inner cylinder (22); A shielding layer (24), wherein the shielding layer (24) is disposed between the inner cylinder (22) and the outer cylinder (23); an upper baffle (25), the upper baffle (25) being disposed between the outer cylinder (23) and the top of the inner cylinder (22), the upper baffle (25) being connected to the upper cover plate (20); A lower baffle (26), the lower baffle (26) is arranged between the outer cylinder (23) and the bottom of the inner cylinder (22), and the lower baffle (26) is connected to the conical base (18).

7. The damaged fuel element storage and transportation container according to claim 6, characterized in that: The shielding layer (24) is made of lead.

8. The damaged fuel element storage and transportation container according to claim 7, characterized in that: The blocking member (19) comprises: A sealing head (27), the sealing head (27) being slidably disposed in the sliding hole; A handle (28), wherein the handle (28) is arranged on both sides of the sealing head (27), A hook head (29), wherein a hook head (29) is provided on a side of the handle (28) away from the sealing head (27), and the hook head (29) is connected to the conical base (18).

9. The damaged fuel element storage and transportation container according to claim 8, characterized in that: A second lifting lug (30) is provided on the outer circumference of the outer cylinder (23).

10. The damaged fuel element storage and transportation container according to claim 9, characterized in that: An anti-drop end cover (31) is provided on the outer cylinder (23) and between the second lifting ears (30).

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