Spent fuel assembly shearing system

Abstract

The embodiment of the present application relates to the technical field of spent fuel reprocessing, and particularly relates to a shearing system of spent fuel assembly, which comprises: a pushing device; a rotary hopper for receiving and containing the spent fuel assembly; a rotary switching device, the rotary hopper is arranged on the rotary switching device, the rotary switching device is used for supporting and driving the rotary hopper to rotate, so that the rotary hopper is switched between a receiving station and a feeding station; and a shearing device, which is formed with a feeding port, and the rotary hopper is rotatably arranged between the shearing device and the pushing device. When the rotary hopper is turned to the receiving station, the rotary hopper receives the spent fuel assembly; when the rotary hopper is turned to the feeding station, the two ends of the rotary hopper are respectively in sealing connection with the pushing device and the feeding port of the shearing device; the pushing device is used for pushing the spent fuel assembly in the rotary hopper to move towards the shearing device, so as to push the spent fuel assembly into the shearing device through the feeding port; and the shearing device is used for shearing the spent fuel assembly pushed into the shearing device.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of spent fuel reprocessing technology, and more specifically to a shearing system for spent fuel assemblies. Background Technology

[0002] The statements herein are provided merely as background information relating to the invention and do not necessarily constitute prior art. The reprocessing of spent fuel assemblies generally includes shearing of the spent fuel assembly, chemical dissolution of fuel segments, chemical separation, and tail-end treatment of uranium and plutonium. During the shearing process, the shearing system disassembles the spent fuel assembly and provides processable spent fuel fragments as feedstock for subsequent dissolution processes. Before shearing begins, the spent fuel assembly from the loading hot chamber needs to be conveyed to the shearing system to achieve shearing of the spent fuel assembly. Summary of the Invention

[0003] Embodiments of the present invention provide a shearing system for spent fuel assemblies. The shearing system includes: a pushing device; a rotary hopper for receiving and containing spent fuel assemblies; a rotary switching device, on which the rotary hopper is disposed, the rotary switching device being configured to support and drive the rotary hopper to rotate, causing the rotary hopper to switch between a receiving station and a feeding station, thereby changing the direction of the spent fuel assemblies within the rotary hopper; and a shearing device having an inlet, with the rotary hopper rotatably disposed between the shearing device and the pushing device. Specifically, when the rotary hopper rotates to the receiving station, it receives spent fuel assemblies; when it rotates to the feeding station, both ends of the rotary hopper are sealed and connected to the inlets of the pushing device and the shearing device, respectively; the pushing device pushes the spent fuel assemblies within the rotary hopper toward the shearing device, thereby pushing the spent fuel assemblies through the inlet into the shearing device; and the shearing device shears the spent fuel assemblies pushed into the shearing device.

[0004] In embodiments of the present invention, a rotary hopper receives spent fuel assemblies conveyed by a pushing device. By incorporating a rotation switching device, the rotary hopper can rotate horizontally, causing the spent fuel assemblies pushed into the rotary hopper to rotate from a bottom-facing-forward orientation to a top-facing-forward orientation. This allows the spent fuel assemblies to be conveyed into the shearing device with their top-facing-forward orientation, thus fulfilling the requirement that spent fuel assemblies be sheared sequentially in the order of top end, fuel segment, and bottom end. Furthermore, the rotary hopper is rotatably positioned between the shearing device and the pushing device, facilitating the pushing of the spent fuel assemblies into the shearing device via the pushing device, thereby achieving the shearing of the spent fuel assemblies. This improves the safety and reliability of the spent fuel assembly shearing process and increases the processing efficiency of the spent fuel assemblies. Attached Figure Description

[0005] Other objects and advantages of the invention will become apparent from the following description of embodiments of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention.

[0006] Figure 1 This is a schematic diagram of a shearing system according to an embodiment of the present invention.

[0007] Figure 2 yes Figure 1 A schematic diagram of a partial structure of the shear system.

[0008] Figure 3 This is a schematic diagram of the structure of a rotary switching device and a rotary hopper according to an embodiment of the present invention.

[0009] Figure 4 This is a schematic diagram of the structure of a power assembly and a drive shaft according to an embodiment of the present invention.

[0010] Figure 5 This is a cross-sectional view of a drive shaft according to an embodiment of the present invention.

[0011] Figure 6 This is a schematic diagram of the structure of a rotating bearing assembly according to an embodiment of the present invention.

[0012] Figure 7 This is a cross-sectional view of a rotating bearing assembly according to an embodiment of the present invention.

[0013] Figure 8 This is a schematic diagram of a rotary switching device according to an embodiment of the present invention.

[0014] Figure 9 This is a schematic diagram of the structure of a coupling according to an embodiment of the present invention.

[0015] Figure 10 yes Figure 9 A structural schematic diagram of the coupling from another perspective.

[0016] Figure 11 This is a schematic diagram of a coupling in a connected state according to an embodiment of the present invention.

[0017] Figure 12 This is a schematic diagram of a coupling in an open state according to an embodiment of the present invention.

[0018] Figure 13 This is a schematic diagram of the structure of a rotating hopper according to an embodiment of the present invention.

[0019] Figure 14 yes Figure 13 A structural schematic diagram of the rotating silo from another perspective.

[0020] Figure 15This is a schematic diagram of the installation and assembly of a rotating hopper and a rotating bearing assembly according to an embodiment of the present invention.

[0021] Figure 16 yes Figure 2 Enlarged view of point A in the middle.

[0022] Figure 17 This is a schematic diagram of a snap fastener assembly in a pressed state according to an embodiment of the present invention.

[0023] Figure 18 This is a schematic diagram of the structure of a pushing device and a pushing hopper according to an embodiment of the present invention.

[0024] Figure 19 This is a schematic diagram of a pushing device according to an embodiment of the present invention.

[0025] Figure 20 This is a schematic diagram of the structure of the drive shaft, chain assembly, and push assembly according to an embodiment of the present invention.

[0026] Figure 21 This is a schematic diagram of the structure of a push component according to an embodiment of the present invention.

[0027] Figure 22 This is a schematic diagram of the structure of a chain according to an embodiment of the present invention.

[0028] Figure 23 This is a schematic diagram of the structure of a chain assembly according to an embodiment of the present invention.

[0029] Figure 24 This is a schematic diagram of the structure of an inner chain box according to an embodiment of the present invention.

[0030] Figure 25 This is a half-sectional view of the inner chain box according to an embodiment of the present invention.

[0031] Figure 26 yes Figure 25 A structural schematic diagram of the inner chain box from another perspective.

[0032] Figure 27 This is a structural schematic diagram of an outer chain box and a receiving support base according to an embodiment of the present invention.

[0033] Figure 28 This is a schematic diagram of the structure of a push connection part according to an embodiment of the present invention.

[0034] Figure 29 This is a schematic diagram of the structure of the pusher part according to an embodiment of the present invention.

[0035] Figure 30 This is a schematic diagram of the structure of an air intake assembly according to an embodiment of the present invention.

[0036] Figure 31 yes Figure 30 Cross-sectional view of the middle air intake assembly.

[0037] Figure 32 This is a schematic diagram of the structure of a rotary hopper in the receiving position according to an embodiment of the present invention.

[0038] Figure 33 This is a schematic diagram of the structure of a rotary hopper in the feeding position according to an embodiment of the present invention.

[0039] Figure 34 This is a schematic diagram of the structure of an inflatable sealing assembly according to an embodiment of the present invention.

[0040] Figure 35 This is a schematic diagram of the installation process of an inflatable sealing assembly according to an embodiment of the present invention.

[0041] Figure 36 This is a schematic diagram of the installation of an inflatable sealing assembly and a feeding transition chamber according to an embodiment of the present invention.

[0042] Figure 37 This is a schematic diagram of the structure of a shearing device and a hydraulic drive device according to an embodiment of the present invention.

[0043] Figure 38 This is a top view schematic diagram of a shearing device according to an embodiment of the present invention.

[0044] Figure 39 This is a cross-sectional view of a shearing device according to an embodiment of the present invention.

[0045] Figure 40 This is a schematic diagram of the shear trap and end receiving container located at the receiving station according to an embodiment of the present invention.

[0046] Figure 41 This is a schematic diagram of the shear trap and end receiving container located at the cleaning and transfer station according to an embodiment of the present invention.

[0047] Figure 42 A schematic diagram of the structure of a shear trap and an end receiving container according to an embodiment of the present invention.

[0048] Figure 43 This is a schematic diagram of the structure of a hydraulic drive device according to an embodiment of the present invention.

[0049] Figure 44 This is a schematic diagram of a hydraulic drive device with a drive shaft installed according to an embodiment of the present invention.

[0050] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are one embodiment of this application, and not all embodiments. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art. It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the device structure and / or processing steps closely related to the solution according to the invention are shown in the drawings, while other details not closely related to the invention are omitted.

[0052] The inventors of this invention have discovered that in conventional spent fuel assembly shearing systems, spent fuel assemblies from the charging hot chamber enter the shearing device with the bottom end facing forward for shearing. However, during the shearing process, the spent fuel assembly needs to be sheared sequentially in the order of top end, fuel section, and bottom end. Based on this, embodiments of this invention provide a spent fuel assembly shearing system for rotating the spent fuel assembly to change its direction, and then directly feeding it into the shearing device for shearing after the change of direction.

[0053] like Figure 1 As shown, in an embodiment of the present invention, the spent fuel assembly shearing system includes: a pushing device 100, a rotary hopper 200, a rotary switching device 300, and a shearing device 400. The rotary hopper 200 is used to receive and contain spent fuel assemblies. The rotary hopper 200 is disposed on the rotary switching device 300, which is configured to support and drive the rotary hopper 200 to rotate, causing the rotary hopper 200 to switch between a receiving station and a feeding station, thereby changing the direction of the spent fuel assemblies within the rotary hopper 200. The shearing device 400 has a feed inlet, and the rotary hopper 200 is rotatably disposed between the shearing device 400 and the pushing device 100.

[0054] When the rotary hopper 200 rotates to the receiving position, it receives spent fuel assemblies. When it rotates to the feeding position, both ends of the rotary hopper 200 are sealed to the inlets of the pushing device 100 and the shearing device 400, respectively. The pushing device 100 pushes the spent fuel assemblies in the rotary hopper 200 toward the shearing device 400, thereby pushing the spent fuel assemblies into the shearing device 400 via the inlet. The shearing device 400 shears the spent fuel assemblies pushed into the shearing device 400.

[0055] In this embodiment of the invention, the rotary hopper 200 receives spent fuel assemblies conveyed by the pushing device 100. By providing a rotation switching device 300, the rotary hopper 200 can be rotated horizontally, causing the spent fuel assemblies pushed into the rotary hopper 200 to rotate from a bottom-facing-forward orientation to a top-facing-forward orientation. This allows the spent fuel assemblies to be conveyed into the shearing device 400 with their top-facing-forward orientation, thus satisfying the requirement that the spent fuel assemblies be sheared sequentially in the order of top end, fuel segment, and bottom end. Furthermore, the rotary hopper 200 is rotatably positioned between the shearing device 400 and the pushing device 100, facilitating the pushing of the pushing device 100 to deliver the spent fuel assemblies into the shearing device 400, thereby achieving the shearing of the spent fuel assemblies. This improves the safety and reliability of the spent fuel assembly shearing process and increases the processing efficiency of the spent fuel assemblies.

[0056] like Figure 2 and Figure 3 As shown, in some embodiments, the rotary switching device 300 may include a power assembly 310, a drive shaft 320, and a rotary bearing assembly 330. One end of the drive shaft 320 is connected to the power assembly 310, which drives the drive shaft 320 to rotate. The rotary bearing assembly 330 is drively connected to the other end of the drive shaft 320, which drives the rotary bearing assembly 330 to rotate about an axis perpendicular to the drive shaft 320. The rotary hopper 200 is supported by the rotary bearing assembly 330, which supports and drives the rotary hopper 200 to rotate, thereby switching the rotary hopper 200 between a receiving station and a feeding station. In this embodiment, by setting the rotating bearing component 330, the rotating hopper 200 can be rotated in the horizontal direction to change the direction of the spent fuel assembly fed into the rotating hopper 200. The spent fuel assembly in the rotating hopper 200 is rotated from the bottom end facing forward to the top end facing forward, so that the spent fuel assembly is conveyed to the shearing device 400 in the direction of the top end facing forward, so as to meet the requirement that the spent fuel assembly needs to be sheared in the order of top end, fuel section, and bottom end.

[0057] In this embodiment, when the rotary hopper 200 is in the receiving position, it can receive spent fuel assemblies pushed by upstream equipment. After receiving the spent fuel assemblies, the rotary bearing assembly 330 drives the rotary hopper 200 to rotate, causing the rotary hopper 200 to switch to the feeding position, and simultaneously realizing the reversal of the spent fuel assemblies. When the rotary hopper 200 is in the feeding position, the spent fuel assemblies in the rotary hopper 200 can be pushed into the shearing device 400.

[0058] like Figure 4As shown, in some embodiments, the power assembly 310 includes a driver 311 and a reducer 312. The driver 311 provides power to the drive shaft 320, and the reducer 312 is connected between the driver 311 and the drive shaft 320. The reducer 312 transmits the power from the driver 311 to the drive shaft 320 while reducing the rotational speed so that the rotational speed of the drive shaft 320 meets the requirements. In some embodiments, the driver 311 is a motor, such as a servo motor.

[0059] Furthermore, a coupling 313 is connected between the driver 311 and the reducer 312. The coupling 313 can compensate for the misalignment between the output shaft of the driver 311 and the input shaft of the reducer 312, and also has a buffering and vibration damping function. For example, the coupling 313 in this embodiment can be a flexible coupling.

[0060] Since the rotating hopper 200 is used to contain spent fuel assemblies and is radioactive, the rotating support assembly 330 and the rotating hopper 200 are located in the feeding hot chamber to shield the spent fuel assemblies from radioactive radiation, thus providing protection. In some embodiments, the power assembly 310 is located outside the radioactive environment where the rotating support assembly 330 and the rotating hopper 200 are located, for example, outside the feeding hot chamber, thereby preventing the power assembly 310 from being affected by radioactive radiation and thus ensuring its normal operation.

[0061] like Figure 5 As shown, the drive shaft 320 includes a solid shaft 321, a hollow shaft 322, and a fixing part 323. The solid shaft 321 is connected to the power assembly 310, and the hollow shaft 322 is connected between the solid shaft 321 and the rotating bearing assembly 330. The solid shaft 321 is rotatably sleeved in the fixing part 230, which is configured to penetrate through the external wall. The fixing part 323 is used to install the solid shaft 321 in the external wall, and the external wall is used to isolate the power assembly 310 from the radioactive environment.

[0062] In this embodiment, the outer wall can be the wall of the feeding hot chamber, and the drive shaft 320 passes through the outer wall to transmit the power provided by the power assembly 310 outside the feeding hot chamber to the rotating bearing assembly 330 inside the feeding hot chamber. In this embodiment, the fixing part 323 is wrapped around the solid shaft 321, so that the solid shaft 321 can rotatably pass through the outer wall.

[0063] In this embodiment, the solid shaft 321 penetrates the external wall, while the hollow shaft 322 is suspended between the external wall and the rotating load-bearing assembly 330. Using a solid shaft 321 for the portion penetrating the wall increases the strength and torsional resistance of the drive shaft 320, while using a hollow shaft 322 for the suspended portion reduces deflection caused by the drive shaft 320's own weight, effectively ensuring the horizontality of the drive shaft 320. Furthermore, the solid shaft 321 and the hollow shaft 322 can be connected by welding.

[0064] like Figure 6 and Figure 7 As shown, in some embodiments, the rotating bearing assembly 330 may include: a bearing portion 331, a body portion 332, a power input portion 333, and a power output portion 334. The rotating hopper 200 is supported on the bearing portion 331, which is rotatably mounted on the body portion 332. A drive shaft 320 is connected to the power input portion 333 and is used to drive the power input portion 333 to rotate about a first axis, which is parallel to the axis of the drive shaft 320. The power input portion 333 is configured to drive the power output portion 334 to rotate, and the power output portion 334 drives the bearing portion 331 to rotate about a second axis, which is perpendicular to the first axis.

[0065] Specifically, the rotation axis of the power input unit 333 is parallel to the bearing surface of the bearing unit 331 and also parallel to the axial direction of the transmission shaft 320. Conversely, the rotation axis of the power output unit 334 is perpendicular to the bearing surface of the bearing unit 331 and also perpendicular to the axial direction of the transmission shaft 320. By providing the power input unit 333 and the power output unit 334, the torsional force input from the transmission shaft 320 is converted into a torsional torque perpendicular to it in another direction. This enables the rotational reversal function of the bearing unit 331 and facilitates the rational arrangement of the relative positions and connection methods of the rotating bearing assembly 330 and the power assembly 310.

[0066] In some embodiments, the magnitude of the torsional torque can be controlled by controlling the output power of the power assembly 310. The rotation angle of the bearing portion 331 can be controlled by controlling the rotation angle of the drive shaft 320. For example, the bearing portion 331 can be rotated 180 degrees, thereby causing the rotating hopper 200 carried by the bearing portion 331 to rotate 180 degrees in the horizontal direction, realizing the switching of the rotating hopper 200 between the receiving station and the feeding station, as well as the reversal of the spent fuel assembly within the rotating hopper 200.

[0067] In some embodiments, the power output part 334 is fixedly connected to the support part 331, so that the support part 331 and the power output part 334 can rotate synchronously. The fixed connection method between the power output part 334 and the support part 331 includes, but is not limited to, interference fit, key connection, etc.

[0068] like Figure 6 As shown, the power input section 333 is partially disposed outside the main body section 332, and the other part is disposed inside the main body section 332. One end of the power input section 333 extending out of the main body section 332 is connected to the drive shaft 320, thereby providing power to the power input section 333.

[0069] like Figure 7 As shown, in some embodiments, the power input part 333 is a worm gear, and the power output part 334 is a worm wheel, with the worm gear meshing with the worm wheel. For example... Figure 8 As shown, the power assembly 310 drives the transmission shaft 320 to rotate, which in turn drives the worm gear to rotate. The rotation of the worm gear drives the worm wheel to rotate, which in turn drives the entire bearing section 331 to rotate. The worm gear structure has high precision, enabling accurate control of the rotation angle, and is highly reliable and not easily damaged. Furthermore, the worm gear structure has a speed reduction effect, preventing the bearing section 331 from rotating excessively due to inertia, thus achieving stable control of the rotation of the bearing section 331.

[0070] Furthermore, the drive shaft 320 can drive the power input unit 333 and the power output unit 334 to rotate forward or in reverse, thereby enabling the bearing unit 331 to rotate both forward and in reverse, so as to realize the switching of the rotating hopper 200 between the receiving station and the feeding station.

[0071] like Figure 6 As shown, in some embodiments, the body portion 332 can be a box structure, and the body portion 332 has space to accommodate other components. For example, the power input portion 333 and the power output portion 334 can be disposed inside the body portion 332.

[0072] like Figure 7 As shown, in some embodiments, the rotating bearing assembly 330 further includes a support portion 336, which is disposed between the bearing portion 331 and the body portion 332, such that the bearing portion 331 is rotatably supported by the support portion 336, and the support portion 336 can stably support the bearing portion 331. Optionally, the support portion 336 can be a slewing bearing capable of withstanding large axial and radial loads and overturning moments.

[0073] In some embodiments, the support portion 331 and the body portion 332 are sealed together, the support portion 331 is rotatable relative to the body portion 332 and the connection is sealed, preventing contamination of the structure inside the body portion 332. Further, as... Figure 5As shown, the main body 332 is provided with an air inlet pipe 3320, which is used to supply gas into the main body 332, so that the main body 332 can maintain a positive pressure against the outside, thereby effectively preventing external dust and other impurities from entering the main body 332, and further ensuring the seal between the support part 331 and the main body 332. For example, the air inlet pipe 3320 can be provided on the side of the main body 332.

[0074] like Figure 2 and Figure 3 As shown, in some embodiments, the rotary switching device 300 further includes a coupling 340, which is connected between the power input unit 333 and the drive shaft 320 to compensate for radial and axial errors between the power input unit 333 and the drive shaft 320.

[0075] like Figure 9 As shown, the coupling 340 in this embodiment includes a coupling body 341 and a drive assembly. The end of the drive shaft 320 away from the power assembly 310 is detachably connected to one end of the coupling body 341, and the power input unit 333 is connected to the other end of the coupling body 341. The drive assembly is connected to the coupling body 341 and is used to drive the coupling body 341 to move axially along the drive shaft 320, so that the drive shaft 320 is connected to or disconnected from the coupling body 341.

[0076] In this embodiment, the drive assembly drives the coupling body 341 to move axially along the drive shaft 320, allowing the drive shaft 320 to quickly disengage from the coupling body 341. This enables rapid disassembly of the drive shaft 320 and the coupling 340, facilitating the removal of the drive shaft 320 or the rotating load-bearing assembly 330. Furthermore, the drive shaft 320 can be inserted into the coupling body 341, enabling rapid installation between the drive shaft 320 and the coupling 340. By providing the coupling 340, this embodiment allows for rapid connection and disconnection between the drive shaft 320 and the power input section 333 of the rotating load-bearing assembly 330.

[0077] like Figure 9 and Figure 10As shown, in some embodiments, the drive assembly includes a support member 342, a swing member 343, a connecting shaft 344, and a sliding member 345. The support member 342 is fixed to the rotary bearing assembly 330; for example, the support member 342 can be fixed to the side of the body portion 332. The support member 342 is provided with a first limiting hole 346 and a second limiting hole 347. One end of the swing member 343 is inserted into the first limiting hole 346 or the second limiting hole 347, and the other end of the swing member 343 is connected to the connecting shaft 344. The connecting shaft 344 is rotatably mounted on the support member 342 and is perpendicular to the drive shaft 320. One end of the sliding member 345 is connected to the connecting shaft 344, and the other end of the sliding member 345 is slidably connected to the coupling body 341.

[0078] Among them, such as Figure 11 As shown, when the swing member 343 is positioned in the first limiting hole 346, the coupling body 341 is connected to the drive shaft 320; as Figure 12 As shown, when the swing member 343 is positioned in the second limiting hole 347, the drive shaft 320 disengages from the coupling body 341, allowing for the disassembly of the drive shaft 320 or the rotating bearing assembly 330. When the swing member 343 swings between the first limiting hole 346 and the second limiting hole 347, it drives the connecting shaft 344 and the sliding member 345 to rotate around the axis of the connecting shaft 344. When the sliding member 345 rotates, it drives the coupling body 341 to move axially along the drive shaft 320, thereby achieving the connection and disconnection between the drive shaft 320 and the coupling body 341.

[0079] In some embodiments, a limiting block 348 is provided on the support member 342. The limiting block 348 is used to limit the swinging member 343 from swinging between the first limiting hole 346 and the second limiting hole 347, so as to prevent the swinging member 343 from swinging excessively and causing excessive movement of the coupling body 341, which would affect the transmission shaft 320 or the power input part 333. Specifically, two limiting blocks 348 are provided on the support member 342 to limit the swing angle of the swinging member 343 so that the swinging member 343 swings between the first limiting hole 346 and the second limiting hole 347.

[0080] In some embodiments, the swing member 343 can be remotely controlled to swing between the first limiting hole 346 and the second limiting hole 347, thereby enabling quick installation and disassembly between the coupling 340 and the drive shaft 320. Specifically, as shown in the figure... Figure 9 As shown, the swing member 343 is provided with an operating part 3431 at the end away from the connecting shaft 344. The operating part 3431 facilitates remote operation by the robot arm, thereby realizing quick assembly and disassembly between the transmission shaft 320 and the rotating bearing assembly 330.

[0081] When the coupling 340 is in operation, the swing member 343 is inserted into the first limiting hole 346, thereby restricting the position of the coupling body 341 and preventing the coupling body 341 from moving and disconnecting from the drive shaft 320 during the operation of the rotation switching device 300. When disassembly is required, the manipulator can be operated to move the operating part 3431 upward to pull the swing member 343 out of the first positioning hole, releasing the limiting of the coupling 340. Then, the manipulator can push the swing member 343 to move it and insert it into the second limiting hole 347, thereby driving the coupling body 341 to move axially along the drive shaft 320 to disconnect the connection between the drive shaft 320 and the coupling body 341. Conversely, moving the swing member 343 and inserting it into the first limiting hole 346 can achieve a quick connection between the coupling 340 and the drive shaft 320.

[0082] In some embodiments, a connecting cylinder is provided on the support member 342, and a connecting shaft 344 is rotatably disposed within the connecting cylinder, thereby enabling the connecting shaft 344 to rotate relative to the support member 342. A bearing is provided between the connecting shaft 344 and the connecting cylinder to support the rotation of the connecting shaft 344 within the connecting cylinder.

[0083] like Figure 9 As shown, in some embodiments, the coupling body 341 is cylindrical, and its interior forms a receiving space for accommodating the drive shaft 320 and the power input part 333. The drive shaft 320 is inserted into the coupling body 341 from one end, and the power input part 333 is inserted into the coupling body 341 from the other end, thereby realizing the transmission connection between the drive shaft 320 and the power input part 333.

[0084] In some embodiments, the inner surface of the coupling body 341 is provided with a toothed portion 3411, in which multiple teeth are arranged circumferentially along the coupling body 341 and each tooth extends axially along the coupling body 341. Both ends of the coupling body 341 are provided with toothed portions 3411, and the ends of the drive shaft 320 and the power input portion 333 are provided with toothed mating portions that mesh with the toothed portions 3411. Through the meshing of the toothed portions 3411 and the toothed mating portions, the connection and transmission between the coupling body 341 and the drive shaft 320 and the power input portion 333 are realized. In some embodiments, the coupling body 341 is a drum-shaped toothed sleeve.

[0085] When the coupling body 341 moves axially along the drive shaft 320, the drive shaft 320 can be inserted into the coupling body 341 and mesh with the toothed portion 3411, thereby enabling the drive shaft 320 to drive the coupling body 341 to rotate. Simultaneously, the power input portion 333 is connected to the coupling body 341 and meshes with the toothed portion 3411 at the other end of the coupling body 341, so that when the coupling body 341 rotates, it drives the power input portion 333 to rotate, thus realizing the transmission of power.

[0086] like Figure 9 As shown, in some embodiments, a sliding groove 3412 is provided on the coupling body 341, and the sliding groove 3412 is arranged along the circumferential direction of the coupling body 341. A sliding member 345 is slidably connected in the sliding groove 3412, and the sliding member 345 surrounds a portion of the coupling body 341. Specifically, when the swing member 343 swings between the first limiting hole 346 and the second limiting hole 347 and drives the sliding member 345 to rotate, the sliding member 345 slides in the sliding groove 3412 to counteract the movement of the sliding member 345 in the radial direction of the transmission shaft 320, thereby driving the coupling body 341 to move axially along the transmission shaft 320; when the transmission shaft 320 drives the coupling body 341 and the power input part 333 to rotate, the sliding member 345 slides in the sliding groove 3412 to make the coupling body 341 rotate relative to the sliding member 345.

[0087] In some embodiments, the swing member 343 is perpendicular to the connecting shaft 344, and the connecting shaft 344 is perpendicular to the transmission shaft 320. Specifically, the connecting shaft 344 is perpendicular to the bearing surface of the bearing portion 331. When one end of the swing member 343 moves between the first limiting hole 346 and the second limiting hole, it makes a circular motion around the axis of the connecting shaft 344, and at the same time drives the connecting shaft 344 to rotate. When the connecting shaft 344 rotates, it drives the sliding member 345 connected to it to make a circular motion around the axis of the connecting shaft 344, so that the end of the sliding member 345 slides in the sliding groove 3412, and at the same time moves along the axial direction of the transmission shaft 320, thereby driving the coupling body 341 to move along the axial direction of the transmission shaft 320, so as to avoid the sliding member 345 driving the coupling body 341 to move radially, causing the coupling body 341 to get stuck and unable to move.

[0088] For example, the slider 345 can be a fork structure, which includes a connecting rod and a C-shaped member. The connecting rod connects the connecting shaft 344 and the C-shaped member. The C-shaped member surrounds the coupling body 341, and its end is disposed within a sliding groove 3412, allowing it to slide within the sliding groove 3412. Furthermore, there is a gap between the end of the C-shaped member and the surface of the sliding groove 3412, thereby allowing the C-shaped member to slide smoothly within the sliding groove 3412.

[0089] In some embodiments, a limiting portion is provided on the rotating bearing assembly 330 to fix the rotating hopper 200 and prevent the rotating hopper 200 from moving on the rotating bearing assembly 330. Specifically, the limiting portion is provided on the bearing portion 331 to fix the rotating hopper 200 to the bearing portion 331.

[0090] like Figure 13 and 14 As shown, the rotary hopper 200 includes a hopper body 210 and a mounting plate 220. The hopper body 210 is used to accommodate spent fuel assemblies, and the mounting plate 220 is fixed to both sides of the hopper body 210. Figure 15 As shown, the mounting plate 220 cooperates with the limiting part to limit the position of the hopper body 210 on the rotating bearing assembly 330.

[0091] like Figure 6 As shown, in some embodiments, the limiting portion includes multiple first limiting portions 3381 and multiple second limiting portions 3382. The multiple first limiting portions 3381 are arranged on both sides of the mounting plate 220 along a first direction, and are used to fix the position of the rotating hopper 200 in the first direction. The multiple second limiting portions 3382 are arranged on both sides of the mounting plate 220 along a second direction, and are used to fix the position of the rotating hopper 200 in the second direction, thereby ensuring that the rotating hopper 200 remains in a stable position relative to the support portion 331 when the support portion 331 rotates, so that the rotating hopper 200 rotates synchronously with the support portion 331. The first direction is the extension direction of the rotating hopper 200, and the second direction is perpendicular to the extension direction of the rotating hopper 200.

[0092] In some descriptions, a groove 221 is provided on the mounting plate 220 at a position corresponding to the limiting part, and the limiting part is located in the groove 221, thereby limiting the position of the rotating hopper 200.

[0093] In some embodiments, the rotary hopper 200 is supported on one side of the rotation axis of the support portion 331. When the support portion 331 rotates 180 degrees about its rotation axis, the rotary hopper 200 rotates eccentrically relative to the center of the support portion 331, so that after the eccentric rotation, the rotary hopper 200 is parallel to the original extension direction of the rotary hopper 200, thereby enabling the rotary hopper 200 to rotate to the receiving station or the feeding station.

[0094] like Figure 13 and Figure 14 As shown, in some embodiments, the rotary hopper 200 is provided with a positioning port 212. For example... Figure 18As shown, the shearing system also includes a snap-fit ​​assembly 500, which is mounted on the rotating hopper 200 and located at the positioning port 212. The snap-fit ​​assembly 500 can rotate with the rotating hopper 200. The snap-fit ​​assembly 500 is configured to be inserted into the rotating hopper 200 via the positioning port 212 and cooperate with the spent fuel assembly. It is used to restrict the position of the spent fuel assembly within the rotating hopper 200 when the rotating hopper 200 rotates, preventing the spent fuel assembly from sliding during rotation or during an earthquake, and also preventing the spent fuel assembly from being accidentally pulled back by the pusher gripper used to push the spent fuel assembly.

[0095] like Figure 17 As shown, in some embodiments, the snap-fit ​​assembly 500 includes a snap-fit ​​mounting portion 510, a snap-fit ​​portion 530, and a snap-fit ​​driving portion 520. The snap-fit ​​mounting portion 510 is mounted on the rotating hopper 200, and has a receiving space within it. An opening is provided at the bottom of the snap-fit ​​mounting portion 510, corresponding to the position of the positioning port 212. The snap-fit ​​portion 530 is movably disposed within the receiving space and matches the spent fuel assembly. The snap-fit ​​driving portion 520 is disposed on the snap-fit ​​mounting portion 510 and connected to the snap-fit ​​portion 530. The snap-fit ​​driving portion 520 is used to drive the snap-fit ​​portion 530 to move up and down.

[0096] Among them, such as Figure 17 As shown, when the rotary hopper 200 rotates, the snap fastener 530 is configured to descend into the rotary hopper 200 via the opening and positioning port 212 and press against the spent fuel assembly 1 to limit the spent fuel assembly 1 and prevent it from shifting during rotation. When the rotary hopper 200 rotates to its position, for example, when the rotary hopper 200 rotates to the feeding station, the snap fastener 530 rises into the receiving space of the snap fastener mounting part 510 to release the limitation on the spent fuel assembly, so as to facilitate the pushing of the spent fuel assembly into the rotary hopper 200 and push the spent fuel assembly into the shearing device.

[0097] like Figure 17 As shown, in some embodiments, the snap fastener 530 is a pressure plate with a limiting groove 531. The limiting groove 531 matches the spent fuel assembly 1, so that when the snap fastener 530 descends into the rotating hopper 200, the spent fuel assembly 1 can be pressed into the limiting groove 531 to prevent the spent fuel assembly from sliding or moving during rotation or earthquakes, thus ensuring safety.

[0098] like Figure 17As shown, in some embodiments, the snap-fit ​​drive unit 520 is a cylinder, and the snap-fit ​​drive unit 520 is provided with an air intake pipe 521 for supplying gas to the cylinder. For example, the cylinder is provided with two air intake pipes 521, which can be respectively arranged on both sides of the piston of the cylinder, and the cylinder is supplied with gas from the two air intake pipes 521 respectively, so that the cylinder can output power from two opposite directions, thereby driving the snap-fit ​​unit 530 to rise and fall.

[0099] In some embodiments, such as Figure 7 As shown, the rotating support assembly 330 also includes an air supply pipe 339, which is disposed within the body portion 332. The air supply pipe 339 has an inlet 3391 located on the body portion 332 for connection to an air source, and an outlet 3392 located on the support portion 331 for connection to a snap-fit ​​drive portion 520 to supply the gas required for driving the snap-fit ​​drive portion 520. In some embodiments, the air supply pipe 339 has its inlet 3391 located on the side of the body portion 332, and its outlet 3392 located at the rotation center of the support portion 331. Furthermore, the air supply pipe 339 is rotatably connected to the support portion 331, so that the outlet of the air supply pipe 339 does not rotate when the support portion 331 rotates.

[0100] In this embodiment, the air supply pipe 339 is disposed inside the main body 332, so that when the bearing part 331 and the rotating hopper 200 and the snap fastening assembly 500 carried by the bearing part 331 rotate, the air supply pipe 339 will not rotate. The connecting pipe between the air supply pipe 339 and the snap fastening drive part 520 can make a circular motion with the air outlet 3392 of the air supply pipe 339 as the center. The connecting pipe between the air source and the air supply pipe 339 will not be displaced, thus avoiding the connecting pipe from moving and getting tangled when the snap fastening assembly 500 moves with the rotating hopper 200, which may even affect the rotation of the rotating hopper 200.

[0101] In some embodiments, the main body 332 is provided with two air supply pipes 339, which are respectively connected to two air inlet pipes 521 of the snap fastener drive unit 520, thereby supplying air to the cylinder, which serves as the snap fastener drive unit 520, from different directions to drive the snap fastener 530 to rise and fall.

[0102] In some embodiments, the mounting plate 220 is provided with a clearance groove 222, the position of which corresponds to the air outlet 3392 of the air supply pipe 339. The air outlet 3392 is located in the clearance groove 222, so that the air supply pipe 339 does not rotate when the bearing part 331 and the rotating hopper 200 rotate.

[0103] like Figure 18 and Figure 19As shown, in some embodiments, the pushing device 100 may include a pushing bin 110, a power assembly 120, a drive shaft 130, a chain assembly 140, and a pushing assembly 150. The pushing bin 110 is located at the end of the rotating bin 200 away from the shearing device 400, and the pushing bin 110 corresponds to the feed inlet of the shearing device 400, so as to push the spent fuel assembly in the rotating bin 200 into the shearing device 400 via the feed inlet. When the rotating bin 200 is positioned at the feeding station, its two ends are respectively sealed to the pushing bin 110 and the feed inlet. One end of the drive shaft 130 is connected to the power assembly 120, which drives the drive shaft 130 to rotate. The chain assembly 140 is drively connected to the other end of the drive shaft 130, which drives the chain assembly 140 to reciprocate. The push assembly 150 is disposed in the push hopper 110 and is connected to the chain assembly. The chain assembly 140 is used to drive the push assembly 150 to move within the push hopper 110 and the rotary hopper 200, so as to push the spent fuel assembly in the rotary hopper 200 to the shearing device.

[0104] In this embodiment of the invention, when the rotating hopper 200 is docked with the pushing hopper 110, the power component 120 drives the chain assembly 140 to move within the pushing hopper 110 and the rotating hopper 200, thereby moving the pushing component 150 and pushing the spent fuel assembly within the rotating hopper 200. This allows the spent fuel assembly to enter through the feed inlet of the shearing device 400, thus achieving the pushing of the spent fuel assembly. The chain assembly 140 can move in a step-like manner. By controlling the movement distance of the chain assembly 140, the pushing distance of the spent fuel assembly can be precisely controlled, allowing the spent fuel assembly to enter the shearing device 400 at a predetermined length, facilitating the cutting of the spent fuel assembly into short segments of a predetermined length.

[0105] In some embodiments, the power assembly 120 is the same as the power assembly 310 in the rotary switching device 300, and will not be described again here. In some embodiments, the drive shaft 130 is the same as the drive shaft 320 in the rotary switching device 300, and will not be described again here.

[0106] In some embodiments, the pusher bin 110, chain assembly 140, and pusher assembly 150 are disposed within the feeding hot chamber to shield the spent fuel assembly from radioactive radiation, thus providing protection. In some embodiments, the power assembly 120 is disposed outside the radioactive environment in which the pusher bin 110, chain assembly 140, and pusher assembly 150 are located; for example, the power assembly 120 is disposed outside the feeding hot chamber to prevent the power assembly 120 from being affected by radioactive radiation and thus affecting its normal operation. Furthermore, the drive shaft 130 penetrates the external wall to transmit the power provided by the power assembly 120 outside the feeding hot chamber to the chain assembly 140 inside the feeding hot chamber.

[0107] In some embodiments, the power assembly 310 and drive shaft 320 of the rotary switching device 300 and the power assembly 120 and drive shaft 130 of the pushing device 100 are arranged on the same side of the pushing bin 110 and the rotating bin 200, so that the components are arranged compactly, thereby reducing the area occupied by the shearing system.

[0108] like Figure 20 and Figure 21 As shown, in some embodiments, the chain assembly 140 includes a chain box 141, a sprocket 142, and a chain 143. A pusher bin 110 is mounted on the chain box 141 and is connected to it. The sprocket 142 is disposed within the pusher bin 110 and is connected to a drive shaft 130, which drives the sprocket 142 to rotate. The chain 143 is movably disposed within the chain box 141. One end of the chain 143 is connected to a pusher assembly 150 within the pusher bin 110. The chain 143 cooperates with the sprocket 142, so that rotation of the sprocket 142 drives the chain 143 to move, thereby moving the pusher assembly 150. The movement of the pusher assembly 150 pushes the spent fuel assembly within the rotating hopper 200, thus achieving the pushing of the spent fuel assembly.

[0109] In some embodiments, the sprocket 142 includes a sprocket shaft 1421 and a sprocket body 1422. The sprocket shaft 1421 is connected to a drive shaft 130, which drives the sprocket shaft 1421 to rotate. The sprocket body 1422 is sleeved outside the sprocket shaft 1421, and the sprocket shaft 1421 drives the sprocket body 1422 to rotate. The sprocket body 1422 cooperates with a chain 143, and the rotation of the sprocket body 1422 drives the chain 143 to move.

[0110] like Figure 18 and Figure 19 As shown, in some embodiments, the pushing device 100 further includes a coupling 160, which is connected between the sprocket 142 of the chain assembly 140 and the drive shaft 130 to compensate for radial and axial errors between the sprocket 142 and the drive shaft 130. In some embodiments, the coupling 160 is the same as the coupling 340 of the rotation switching device 300, and will not be described again here.

[0111] like Figure 22As shown, in some embodiments, the chain 143 includes a plurality of first chain plates 1431, a plurality of second chain plates 1432, and a plurality of pins 1433. The plurality of first chain plates 1431 cooperate with each other, the plurality of second chain plates 1432 cooperate with each other, and the first chain plates 1431 and second chain plates 1432 are fixedly connected by pins 1433. In this embodiment, the chain 143 includes a plurality of chain plates that cooperate with each other, allowing the movement of the chain 143 to be controlled in units of the length of one chain plate. In some embodiments, by controlling the chain plates in the chain 143, the chain 143 can be driven to turn. In some embodiments, the plurality of first chain plates 1431 are symmetrically arranged at both ends of the pin 1433, and the plurality of second chain plates 1432 are symmetrically arranged at both ends of the pin 1433.

[0112] In some embodiments, the first chain plate 1431 is disposed outside the second chain plate 1432. In some embodiments, the mating connections of the plurality of first chain plates 1431 and the mating connections of the plurality of second chain plates 1432 are staggered, that is, the plurality of first chain plates 1431 and the plurality of second chain plates 1432 do not overlap, which allows for more precise control of the movement and turning of the chain 143.

[0113] In some embodiments, the first chain plate 1431 and the second chain plate 1432 are rigid plates. Setting the first chain plate 1431 and the second chain plate 1432 as rigid plates can smoothly and accurately transmit the thrust or tension of the chain 143.

[0114] like Figure 21 As shown, in some embodiments, the sprocket 142 is provided with a plurality of receiving grooves 1423, which are evenly distributed along the circumference of the sprocket 142. A pin 1433 engages with the receiving groove 1423, so that rotation of the sprocket 142 can drive the pin 1433 to move, thereby driving the chain 143 to move. In some embodiments, the receiving groove 1423 is provided in the sprocket body 1422. When the sprocket 142 rotates, the pin 1433 located in the receiving groove 1423 moves with the rotation of the sprocket 142, thereby driving the chain 143 to move; simultaneously, the movement of the chain 143 can drive subsequent pins 1433 into the receiving groove 1423 of the sprocket 142, allowing the chain 143 to move continuously. Furthermore, the inner surface of the receiving groove 1423 is inclined to facilitate the entry of the pin 1433 into the receiving groove 1423.

[0115] like Figure 23 and Figure 24As shown, in some embodiments, the chain box 141 includes an inner chain box 144 and an outer chain box 145. A chain 143 is disposed in the inner chain box 144, which is provided with a track. The chain 143 is disposed on the track and can move along the track. The outer chain box 145 is configured to accommodate the inner chain box 144, and a gap is provided between the inner chain box 144 and the outer chain box 145 to allow the inner chain box 144 to be directly disengaged through the gap. The inner chain box 144 and the outer chain box 145 are each provided with a liquid flow structure so that liquid used for rinsing the chain assembly 140 can flow out from the outer chain box 145 through the inner chain box 144. This embodiment, through the combination of the inner chain box 144, the outer chain box 145, the chain 143, and the liquid flow structure, allows for convenient cleaning of the chain assembly 140.

[0116] like Figure 25 and Figure 26 As shown, in some embodiments, the inner chain box 144 includes an inner plate 1441 and an outer plate 1442. The inner plate 1441 is provided with a track 1444, and a chain 143 is disposed on the track 1444 and can move along the track 1444. The liquid flow structure includes an opening 1445 formed on the outer plate 1442.

[0117] In some embodiments, the track 1444 may be annular, including straight segments and curved segments, and is disposed around the inner side of the inner plate 1441. In some embodiments, the annular track 1444 may be configured to wrap around the inner plate 1441 multiple times to accommodate a longer chain. In some embodiments, the track 1444 may be a guide groove on the inner plate 1441. For example, a guide groove may be provided on the outer surface of the inner plate 1441, and the guide groove may be configured to wrap around the inner plate 1441 multiple times, with the guide groove serving as the track 1444, and the chain 143 disposed in the guide groove and movable along the guide groove.

[0118] In some embodiments, the lengths of the first chain plate 1431 and the second chain plate 1432 of the chain 143 are both less than the length of the straight segment of the track 1444, and the lengths of the first chain plate 1431 and the second chain plate 1432 are both less than the radius of the curved segment of the track 1444, thereby enabling the chain 143 to turn. In some embodiments, when the chain 143 moves, the length of the first chain plate 1431 or the second chain plate 1432 can be used as a unit of movement.

[0119] In some embodiments, the mating connections of multiple first chain plates 1431 and multiple second chain plates 1432 are staggered. The distance between the staggered mating connections of the first chain plates 1431 and the second chain plates 1432 is less than the length of the straight segment of the track 1444, and the distance between the staggered mating connections of the first chain plates 1431 and the second chain plates 1432 is less than the radius of the curved segment of the track 1444. This facilitates turning of the chain 143 and allows for precise control of the chain 143's movement. In some embodiments, when the chain 143 moves, the distance between the staggered mating connections of the first chain plates 1431 and the second chain plates 1432 can be considered as a unit of movement. Through the above-described structural arrangement of the chain 143, the length of the pushed spent fuel assembly can be precisely controlled.

[0120] In some embodiments, the track 1444 can be a guide groove on the inner plate 1441 that passes through the inner plate 1441. A plurality of first chain plates 1431 and second chain plates 1432 connected in pairs are respectively distributed on both sides of the guide groove. The first chain plate 1431 is disposed outside the second chain plate 1432. The roller 1434 is disposed outside the first chain plate 1431 and connected to the first chain plate 1431.

[0121] In some embodiments, the position of the opening 1445 and the position of the track 1444 are adapted for liquid outflow. For example... Figure 29 As shown, the opening 1445 can be positioned to correspond to a section of track 1444, allowing the liquid used to flush that section of track 1444 to flow out from the opening 1445. Specifically, when both the inner chain box 144 and the chain 143 are located within the outer chain box 145, the liquid used to flush the chain 143 and the inner chain box 144 can flow from the inner chain box 144 to the outer chain box 145 through the opening 1445. In some embodiments, such as... Figure 29 As shown, opening 1445 can be set to multiple.

[0122] In some embodiments, the inner chain box 144 may further include an outer panel 1442 and an inner panel 1441. For example... Figure 30 As shown, the outer plate 1442 and the inner plate 1441 can be fixed together by bolts and nuts 1446. Furthermore, the outer plate 1442 and the inner plate 1441 can be fixed together by multiple sets of bolts and nuts 1446. In some embodiments, the inner chain box 144 may also include a spacer 1447, which is disposed on the bolts for fastening the bolts and can support the chain 143.

[0123] like Figure 23 and Figure 27As shown, in some embodiments, the liquid flow structure includes a drain component 1451 disposed in the outer chain box 145, so that liquid flowing into the outer chain box 145 flows out of the outer chain box 145 through the drain component. In some embodiments, when cleaning the chain assembly 140, the inner chain box 144 and the chain 143 inside the outer chain box 145 can be directly rinsed. The liquid rinsing the chain assembly 140 can flow through the opening 1445 through the inner chain box 144 to the outer chain box 145, and the liquid flowing into the outer chain box 145 flows out of the outer chain box 145 through the drain component 1451.

[0124] like Figure 20 and Figure 21 As shown, in some embodiments, the pushing assembly 150 includes a pushing connection portion 151 and a pushing portion 152. The pushing connection portion 151 is disposed within the pushing hopper 110 and is connected to the chain 143 of the chain assembly 140. The chain 143 is used to drive the pushing connection portion 151 to move within the pushing hopper 110 and the rotating hopper 200. The pushing portion 152 is detachably connected to the pushing connection portion 151, and the pushing connection portion 151 is configured to push the pushing portion 152 to move. The pushing portion 152 is used to push the spent fuel assembly. In this embodiment, pushing the spent fuel assembly through the pushing portion 152 facilitates applying a pushing force to the spent fuel assembly, causing the spent fuel assembly to move.

[0125] In some embodiments, such as Figure 28 As shown, the end of the push connection 151 away from the chain 143 is provided with a connecting protrusion 1511, such as... Figure 33 As shown, the pusher 152 is provided with a connecting groove 1521, and the connecting protrusion 1511 cooperates with the connecting groove 1521 so that the pusher connecting part 151 and the pusher 152 can be detachably connected, thereby realizing quick assembly and disassembly of the pusher connecting part 151 and the pusher 152, and facilitating the replacement of the pusher 152.

[0126] In some operating conditions, such as when the shearing device malfunctions, it is necessary to remove the spent fuel assembly fed into the shearing device. In this case, the pusher 152 can be replaced with a gripper to hold the spent fuel assembly, so as to move the spent fuel assembly back into the rotary hopper 200. In this embodiment, the pusher 152 is easily replaced by quick assembly and disassembly of the pusher connection 151 and the pusher 152.

[0127] In some embodiments, the push connection 151 includes a push body 1512 and a connecting protrusion 1511, with the connecting protrusion 1511 disposed at the bottom of the push body 1512. Simultaneously, a connecting groove 1521 is disposed at the bottom of the push part 152, and the connecting protrusion 1511 matches the connecting groove 1521, with the connecting protrusion 1511 being accommodated within the connecting groove 1521, thereby allowing the push connection 151 and the push part 152 to be detachably connected. Furthermore, when the push part 152 needs to be replaced, it is not necessary to disassemble the push connection 151; simply lifting the push part 152 upwards allows for the detachment of the push connection 151 and the push part 152.

[0128] like Figure 28 and Figure 29 As shown, in some embodiments, the push connection portion 151 is provided with rollers 1513, and multiple rollers 1513 are symmetrically arranged on both sides of the push connection portion 151, thereby reducing friction during the movement of the push connection portion 151 and making its movement smoother. In some embodiments, the push portion 152 is also provided with rollers 1522, and multiple rollers 1522 are symmetrically arranged on both sides of the push portion 152. The rotation axis of the rollers in the push assembly 150 is the same as that of the rollers 1434 of the chain 143.

[0129] like Figure 29 As shown, in some embodiments, the pushing part 152 includes a moving part 1523, a connecting rod 1524, and a pusher head 1525. The moving part 1523 is detachably connected to the pushing connection part 151. A roller 1522 is disposed on the moving part 1523 to reduce friction between the pushing part 152 and the pushing hopper 110 or the rotating hopper 200. The connecting rod 1524 connects the moving part 1523 and the pusher head 1525 to fix the pusher head 1525 to the end of the moving part 1523 away from the pushing connection part 151. The pusher head 1525 is used to push the spent fuel assembly. In some embodiments, the pusher head 1525 is shaped to match the spent fuel assembly to uniformly transmit the pushing force to the spent fuel assembly, facilitating the movement of the spent fuel assembly in the rotating hopper 200.

[0130] like Figure 18 As shown, in some embodiments, the push hopper 110 is disposed on the outer chain box 145, and the bottom of the push hopper 110 is provided with a connection port for connecting the push hopper 110 and the inner chain box 144, so that the chain 143 can move into the push hopper 110 through the connection port, so that the chain 143 can be connected to the push component 150. The end of the chain 143 that connects to the push component 150 is disposed inside the push hopper 110, so that the chain 143 and the push component 150 remain connected.

[0131] like Figure 21As shown, in some embodiments, the pushing device 100 further includes a pushing limit detection element 170, which is disposed within the pushing hopper 110 and is used to detect whether the pushing component 150 has retracted into position. Figure 28 As shown, a limit detection trigger 1514 is provided on the push connection portion 151, and the push limit detection member 170 is configured to generate a positioning signal when it contacts the limit detection trigger 1514. Specifically, the limit detection trigger 1514 can be provided on the push connection portion 151, and the limit detection trigger 1514 can be a trigger protrusion protruding from the surface of the push connection portion 151.

[0132] In some embodiments, after the spent fuel assembly is fully pushed into the shearing device, the chain 143 and the pushing assembly 150 return to their initial positions, and the pushing limit detection element 170 is used to detect whether the pushing assembly 150 has returned to its position. In some embodiments, the pushing limit detection element 170 can be a pneumatic sensor. When the limit detection trigger 1514 on the pushing assembly 150 collides with the pneumatic sensor in the pushing hopper 110, the pressure in the air path of the pneumatic sensor changes, thereby triggering the pushing limit detection element 170 to generate a positioning signal.

[0133] like Figure 21 As shown, in some embodiments, a push limiter 180 is provided inside the push hopper 110. The push limiter 180 cooperates with the push assembly 150 to limit the backward position of the chain 143. In some embodiments, the push limiter 180 matches the push connection 151 to limit the push assembly 150 from continuing to move toward the sprocket 142, thereby limiting the extreme position of the chain 143's backward movement and preventing the chain 143 from completely retracting into the inner chain box 144. At the same time, the push limiter 180 can also provide a standard zero point for the stroke calibration of the power assembly 120, facilitating the calibration of the power assembly 120's stroke.

[0134] In some embodiments, the push limiter 180 can be a limit stop, which can cooperate with the push body 1512 of the push connection 151 to limit the extreme position of the push component 150's retraction. Figure 21 As shown, the pushing body 1512 is supported above the connecting protrusion 1511, and the pushing limiter 180 is located below the pushing body 1512. When the pushing component 150 retracts to its limit position, the connecting protrusion 1511 contacts the pushing limiter 180, and the pushing limiter 180 prevents the connecting protrusion 1511 from retracting, thereby limiting the chain 143 from continuing to retract.

[0135] like Figure 18As shown, in some embodiments, the shearing system further includes an air intake assembly 600, which is disposed in the push hopper 110. The air intake assembly 600 is used to introduce air into the push hopper 110, thereby blowing the airflow from the push hopper 110 through the rotating hopper 200 to the shearing device, preventing dust generated in the shearing device during the shearing process from entering the shearing system. In this embodiment, when the rotating hopper 200 rotates to the feeding station, the rotating hopper 200 is connected to the push hopper 110, and the air intake assembly can introduce air into the push hopper 110, so that the airflow flows along the direction of the push hopper 110, the rotating hopper 200, and the shearing device, preventing dust in the shearing device from entering the shearing system with the airflow.

[0136] like Figure 30 and Figure 31 As shown, in some embodiments, the air intake assembly 600 includes an air intake pipe 610 and a liquid seal structure 620. The air intake pipe 610 is connected to the push hopper 110 and is used to intake air into the push hopper 110. The liquid seal structure 620 is disposed outside the air intake pipe 610 and stores a sealing liquid inside the liquid seal structure 620 to seal the air intake pipe 610 and the push hopper 110, so that the gas in the air intake pipe 610 can only flow into the push hopper 110.

[0137] like Figure 31 As shown, in some embodiments, the liquid seal structure 620 includes an outer sleeve 621 and an inner sleeve 622. The inner sleeve 622 is connected to and communicates with the pusher hopper 110. The outer sleeve 621 is sleeved outside the inner sleeve 622, with the bottom of the outer sleeve 621 closed and the bottom of the inner sleeve 622 having an opening, thereby allowing the outer sleeve 621 and the inner sleeve 622 to communicate through the bottom opening. An air inlet pipe 610 is fixed in the inner sleeve 622, with an outlet at the top of the air inlet pipe 610 located within the inner sleeve 622 and an inlet at the bottom of the air inlet pipe 610 located outside the outer sleeve 621.

[0138] The sealing liquid is stored in the outer sleeve 621 and the inner sleeve 622, and the liquid level of the sealing liquid does not exceed the outlet of the air inlet pipe 610, so that the gas entering the air inlet pipe 610 can only enter the push hopper 110 through its top opening and the top of the inner sleeve 622. In some embodiments, the sealing liquid is deionized water to avoid corrosion of the liquid seal structure 620.

[0139] In some embodiments, the liquid seal structure 620 further includes an inlet pipe 623 disposed within the outer sleeve 621, and the inlet pipe 623 is used to supply sealing liquid into the liquid seal structure 620. In some embodiments, the liquid seal structure 620 further includes an overflow pipe 624 disposed within the outer sleeve 621, and the overflow pipe 624 is located below the outlet of the air inlet pipe 610, ensuring that an appropriate amount of sealing liquid is stored in the liquid seal device, while preventing the liquid level of the sealing liquid from exceeding the outlet of the air inlet pipe 610 and blocking the air inlet pipe 610.

[0140] like Figure 1 and Figure 18 As shown, in some embodiments, the shearing system further includes a receiving transition chamber 710, which is used to connect to an external feeding device. A rotating hopper 200 is rotatably disposed between the receiving transition chamber 710 and the shearing device 400, and the receiving transition chamber 710 is arranged parallel to the pushing hopper 110. The rotation switching device 300 is configured to drive the rotating hopper 200 to rotate eccentrically by 180°. When the rotating hopper 200 rotates to the receiving position, it connects to the receiving transition chamber 710, and spent fuel assemblies enter the rotating hopper 200 via the receiving transition chamber 710. When the rotating hopper 200 rotates to the feeding position, it connects to the pushing hopper 110. In this embodiment, the receiving transition chamber 710 can connect the rotating hopper 200 and the upstream feeding device to facilitate the receiving of spent fuel assemblies by the rotating hopper 200.

[0141] In some embodiments, the receiving transition chamber 710, the pushing chamber 110, and the rotating hopper 200 are disposed within the feeding hot chamber, while the upstream feeding device is disposed outside the feeding hot chamber. To enable the pushing of spent fuel assemblies from the feeding device to the rotating hopper 200, the receiving transition chamber 710 is installed through the wall of the feeding hot chamber.

[0142] like Figure 1 and Figure 2 As shown, in some embodiments, the shearing system further includes a feeding transition chamber 720. The feeding transition chamber 720 is fixedly disposed between the rotary hopper 200 and the shearing device 400, and its position corresponds to that of the push hopper 110. One end of the feeding transition chamber 720 is sealed to the feed inlet of the shearing device 400. When the rotary hopper 200 rotates to the feeding station, both ends of the rotary hopper 200 are connected to the push hopper 110 and the feeding transition chamber 720, respectively. The push device 100 drives the spent fuel assembly within the rotary hopper 200 to move, thereby pushing the spent fuel assembly through the feeding transition chamber 720 into the shearing device 400.

[0143] In some embodiments, the push hopper 110 and the rotary hopper 200 are disposed in the feeding hot chamber, while the shearing device 400 is disposed in the shearing hot chamber. A wall is provided between the feeding hot chamber and the shearing hot chamber to shield against nuclear radiation. To facilitate the pushing of spent fuel assemblies from the rotary hopper 200 to the shearing device, a receiving transition chamber 710 is installed within the external wall.

[0144] In some embodiments, the center lines of the push hopper 110 and the feeding transition hopper 720 coincide, and the receiving transition hopper 710 is arranged parallel to one side of the push hopper 110.

[0145] like Figure 32 As shown, when the rotating bearing assembly 330 drives the rotating hopper 200 to rotate to the receiving station, the rotating hopper 200 docks with the receiving transition chamber 710 so that the upstream feeding equipment can send the spent fuel assembly to the rotating hopper 200 via the receiving transition chamber 710.

[0146] like Figure 33 As shown, after the rotating bearing component 330 drives the rotating hopper 200 to rotate eccentrically by 180°, the rotating hopper 200 is in the feeding position. At this time, the two ends of the rotating hopper 200 are respectively connected to the pushing hopper 110 and the feeding transition hopper 720. The pushing component in the pushing hopper 110 moves into the rotating hopper 200 to push the spent fuel assembly in the rotating hopper 200 into the feeding transition hopper 720, and then pushes the spent fuel assembly into the shearing device through the feeding transition hopper 720 to realize the pushing and feeding of the spent fuel assembly.

[0147] like Figure 16 and Figure 18 As shown, in some embodiments, the shearing system further includes an inflatable sealing assembly 800, which is connected to one end of the feeding transition chamber 720 near the shearing device 400. The inflatable sealing assembly 800 is configured to be inflatable and is used to seal the feed inlet connecting the feeding transition chamber 720 and the shearing device 400.

[0148] In some embodiments, an inflatable sealing assembly 800 is connected to one end of the push hopper 110 and the feeding transition hopper 720 near the rotating hopper 200. The inflatable sealing assembly 800 is used to seal the connection between the push hopper 110 and the rotating hopper 200, and to seal the connection between the feeding transition hopper 720 and the rotating hopper 200. Specifically, when both ends of the rotating hopper 200 are connected to the push hopper 110 and the feeding transition hopper 720 respectively, the inflatable sealing assembly 800 inflates to seal the connection between the rotating hopper 200 and the push hopper 110 or the feeding transition hopper 720; when the rotating hopper 200 rotates, the inflatable sealing assembly 800 deflates, creating a gap between the push hopper 110 and / or the feeding transition hopper 720 and the rotating hopper 200, providing space for the rotation of the rotating hopper 200.

[0149] like Figure 34 As shown, in some embodiments, the inflatable sealing assembly 800 includes a sealing mounting portion 810 and an inflatable pad 820. The sealing mounting portion 810 is connected to the end of the push hopper 110 or the feed transition hopper 720. The inflatable pad 820 is connected to the side of the sealing mounting portion 810 away from the push hopper 110 or the feed transition hopper 720, and the inflatable pad 820 faces the rotating hopper 200. Both the sealing mounting portion 810 and the inflatable pad 820 are annular and match the rotating hopper 200. The inflatable pad 820 forms a channel 821, which matches the spent fuel assembly. Thus, when the rotating hopper 200 docks with the push hopper 110 and the feed transition hopper 720, the rotating hopper 200 can communicate with the push hopper 110 and the feed transition hopper 720, facilitating the movement of the push assembly in the push hopper 110 to the rotating hopper 200 and the pushing of the spent fuel assembly in the rotating hopper 200 to the feed transition hopper 720 via the channel 821.

[0150] In some embodiments, the sealing mounting part 810 is provided with an inflation port 830, which is connected to the inflation pad 820 for inflating and deflating the inflation pad 820. When the rotating hopper 200 rotates to the feeding station, both ends of the rotating hopper 200 are respectively connected to the pushing hopper 110 and the feeding transition hopper 720. At this time, the inflation pad 820 is inflated through the inflation port 830 to fill the gap between the rotating hopper 200 and the pushing hopper 110 / feeding transition hopper 720, ensuring the feeding channel between the rotating hopper 200 and the pushing hopper 110 / feeding transition hopper 720 is sealed and preventing dust leakage. When the rotating hopper 200 starts to rotate, the inflation pad 820 deflates and retracts, thereby providing space for the rotation of the rotating hopper 200.

[0151] like Figure 35 and Figure 36 As shown, the ends of the push hopper 110 and the feeding transition hopper 720 are provided with connecting flanges 722. The connecting flanges 722 are provided with mounting grooves, and the inflatable sealing assembly 800 is installed in the mounting grooves, thereby realizing the installation and fixation of the inflatable sealing assembly 800.

[0152] like Figure 1 , Figure 18 and Figure 27 As shown, in some embodiments, the shearing system further includes a receiving support 10, a push hopper 110 and a receiving transition hopper 710 disposed on the receiving support 10, and the receiving support 10 is used to support the push hopper 110 and the receiving transition hopper 710.

[0153] In some embodiments, the receiving support base 10 has two spaced-apart push-feed bin support bases 11, with an outer chain box 145 disposed between the two push-feed bin support bases 11. The push-feed bin 110 is disposed on the push-feed bin support base 11, and the push-feed bin support base 11 supports the push-feed bin 110 so that the push-feed bin 110 is positioned on the outer chain box 145. In some embodiments, the outer chain box 145 can be fixed between the two push-feed bin support bases 11 to facilitate the lifting and removal of the inner chain box 144.

[0154] In some embodiments, by placing the pusher bin 110 on the outer chain box 145, the top opening of the outer chain box 145 can be sealed, thereby sealing the inner chain box 144 within the space formed by the outer chain box 145, preventing external dust from entering the inner chain box 144 and causing problems such as chain 143 jamming in the inner chain box 144, thus affecting the operation of the chain assembly 140.

[0155] In some embodiments, the receiving support 10 further includes a receiving transition chamber support 12, on which the receiving transition chamber 710 is supported. The receiving transition chamber support 12 is arranged parallel to the outer chain box 145.

[0156] In some embodiments, such as Figures 1 to 3 As shown, the shearing system also includes a feeding support 20, and a feeding transition chamber 720 is disposed on the feeding support 20. The feeding support 20 is used to support the feeding transition chamber 720.

[0157] like Figure 37 and Figure 38As shown, in some embodiments, the shearing device 400 may include: a housing 410, a fixed blade assembly 420, a clamping assembly 430, and a movable blade assembly 440. The housing 410 has a feed inlet 4121. The fixed blade assembly 420 is fixed within the housing 410 and its shape matches that of the spent fuel assembly for supporting the spent fuel assembly. The clamping assembly 430 is movably disposed within the housing 410. The clamping assembly 430 and the fixed blade assembly 420 are correspondingly disposed on opposite sides of the feed inlet 4121. The clamping assembly 430 is movable relative to the fixed blade assembly 420 to clamp the spent fuel assembly against the fixed blade assembly 420. The movable blade assembly 440 is movably disposed within the housing 410. The moving direction of the movable blade assembly 440 is parallel to the moving direction of the clamping assembly 430, and the movable blade assembly 440 is arranged parallel to the fixed blade assembly 420. When the movable blade assembly 440 moves toward the fixed blade assembly 420, the movable blade assembly 440 and the fixed blade assembly 420 cooperate to shear the spent fuel assembly. In the shearing device 400 of this embodiment, the shape of the fixed blade assembly 420 matches that of the spent fuel assembly, so that the fixed blade assembly 420 can carry the spent fuel assembly and the clamping assembly 430 presses the spent fuel assembly into the fixed blade assembly 420, thereby stably fixing the spent fuel assembly and preventing displacement of the spent fuel assembly during the shearing process. This facilitates the cooperation of the movable blade and the fixed blade to shear the spent fuel assembly.

[0158] like Figure 39 As shown, the feed inlet 4121 is located on the side of the housing 410, allowing the spent fuel assembly to be fed horizontally into the shearing device 400. In some embodiments, the feed inlet 4121 matches the shape of the spent fuel assembly, and the spent fuel assembly moves along its axial direction and is fed into the housing 410 from the feed inlet 4121. The clamping assembly 430 and the fixed blade assembly 420 are arranged horizontally on both sides of the feed inlet 4121, and the moving direction of the clamping assembly 430 and the movable blade assembly 440 is perpendicular to the axial direction of the spent fuel assembly. This allows the spent fuel assembly to be clamped to the fixed blade assembly 420 by the clamping assembly 430 after it is fed into the housing 410, preventing displacement of the spent fuel assembly during the shearing process.

[0159] Furthermore, the fixed blade assembly 420 and the movable blade assembly 440 are arranged in parallel in the horizontal direction, and the movable blade assembly 440 is arranged on the side of the clamping assembly 430 away from the feed port 4121. The blade edge of the movable blade assembly 440 is opposite to the blade edge of the fixed blade assembly 420, so that the spent fuel assembly can be sheared when the movable blade assembly 440 moves toward the fixed blade assembly 420.

[0160] The shearing device 400 in this embodiment can perform horizontal shearing of spent fuel assemblies. Compared with traditional vertical shearing machines, it avoids the need to arrange moving and fixed blades in the vertical direction, and also avoids the possibility of uncut spent fuel assemblies falling during vertical feeding and shearing, thus improving the safety and reliability of spent fuel assembly shearing and increasing the processing efficiency of spent fuel assemblies.

[0161] like Figure 39 As shown, in some embodiments, the fixed blade assembly 420 includes a fixed blade mounting portion 421 and a fixed blade 422. The fixed blade mounting portion 421 is fixed inside the housing 410, and the fixed blade 422 is mounted on the fixed blade mounting portion 421. The blade edge of the fixed blade 422 is provided with a first receiving groove that matches the shape of the spent fuel assembly. The first receiving groove is used to receive at least a portion of the spent fuel assembly.

[0162] like Figure 39 As shown, a fixed blade support portion 414 is provided inside the housing 410. The fixed blade support portion 414 is fixed inside the housing 410, and a fixed blade receiving groove 4141 is provided on the fixed blade support portion 4141. The fixed blade assembly 420 is installed in the fixed blade receiving groove 4141. In some embodiments, the fixed blade support portion 414 is also provided with a spent fuel channel 4142, which corresponds to the feed channel 412. The fixed blade receiving groove 4141 is located on the side of the spent fuel channel 4142 away from the clamping assembly 430. When the spent fuel assembly is pushed into the spent fuel channel 4142, the fixed blade assembly 420 can carry the spent fuel assembly to facilitate shearing it.

[0163] like Figure 39 As shown, in some embodiments, the clamping assembly 430 includes a clamping moving part 432 and a clamping part 433. The clamping moving part 432 is disposed inside the housing 410, and is located on both sides of the feed inlet 4121 with the fixed blade assembly 420. The clamping part 433 is fixed to one end of the clamping moving part 432. The clamping moving part 432 is used to drive the clamping part 433 to move, and the clamping part 433 is used to clamp the spent fuel assembly into the fixed blade assembly 420. For example, the clamping part 433 corresponds to the first receiving groove 4221 of the fixed blade 422, so that the clamping part 433 can clamp the spent fuel assembly into the first receiving groove 4221, thereby limiting the position of the spent fuel assembly.

[0164] like Figure 39As shown, in some embodiments, the movable blade assembly 440 includes a movable blade mounting portion 442 and a movable blade 443. The movable blade mounting portion 442 is disposed within the housing 410, and the movable blade 443 is fixed to the movable blade mounting portion 442. The movable blade mounting portion 442 drives the movable blade 443 to move, and the movable blade 443 cooperates with the fixed blade 422 to shear the spent fuel assembly. The cutting edge of the movable blade 443 corresponds to the cutting edge of the fixed blade 422, thereby achieving the shearing of the spent fuel assembly.

[0165] like Figure 1 and Figure 37 As shown, in some embodiments, the shearing system may further include a base 30, and the housing 410 of the shearing device 400 is disposed on the base 30. The base 30 is used to support the shearing device 400 to ensure the stability of the operation of the shearing device 400.

[0166] like Figure 39 As shown, in some embodiments, the clamping assembly 430 and the movable blade assembly 440 are movably supported on the side wall of the housing 410, and the bottom of the housing 410 is formed with a discharge port for discharging the cut ends and fuel segments of the spent fuel assembly so that they can be collected and further processed.

[0167] like Figure 1 and Figure 40 As shown, in some embodiments, the shearing system may further include a shear trap 1000, which is disposed below the shearing device 400. A connection port 1010 is formed at the top of the shear trap 1000, and the connection port is sealed to the discharge port at the bottom of the housing 410. An outlet is formed at the bottom of the shear trap 1000, corresponding to the connection port 1010. The outlet is connected to an external solvent, and the sheared fuel segments fall into the shear trap 1000 and are collected in the solvent.

[0168] In this embodiment, the connection port 1010 of the shear trap 1000 is sealed to the discharge port at the bottom of the housing 410 of the shearing device 400, thereby forming a closed space between the shear trap 1000 and the shearing device 400, preventing dust from spreading and spreading during shearing operations, effectively controlling the spread of dust within the limited shear trap space, and preventing dust from spreading to the outside.

[0169] like Figure 40As shown, in some embodiments, the shearing system may further include: an end receiving container 1100, which is movably disposed within the shear trap 1000. The end receiving container 1100 is configured to move between a receiving station 2 and a cleaning and transfer station 3. The receiving station 2 is located below the connection port, and the cleaning and transfer station 3 is located away from the connection port and the outlet. Specifically, when the shearing device 400 shears the end of the spent fuel assembly, the end receiving container 1100 moves to the receiving station 2 to receive the sheared end; when the shearing device 400 shears the fuel segment of the spent fuel assembly, the end receiving container 1100 moves to the cleaning and transfer station 3 so that the sheared fuel segment is collected in the melter via the outlet.

[0170] In some embodiments, a liquid seal groove 1040 is formed at the edge of the connection port 1010 of the shear trap 1000, and the liquid seal groove 1040 is configured to contain a sealing liquid. A sealing plate is connected to the bottom of the discharge port of the shearing device 400, and the sealing plate is partially inserted into the liquid seal groove 1040 to seal the shear trap 1000 and the shearing device 400 to prevent dust from spreading to the outside.

[0171] like Figure 42 As shown, the liquid seal tank 1040 is square and annular, with a through hole at the center for connecting the shearing device 400 and the shear trap 1000. The tank contains water to liquid seal the connection between the shearing device 400 and the shear trap 1000.

[0172] like Figure 42 As shown, the shear trap 1000 in this embodiment includes a receiving portion 1030, a first shear trap 1050, and a second shear trap 1060. An end-receiving container 1100 is movably disposed in the receiving portion 1030. Both the first shear trap 1050 and the second shear trap 1060 are connected to the bottom of the receiving portion 1030 and communicate with it. The first shear trap 1050 is correspondingly disposed with the connection port 1010, and the discharge port 1070 is disposed at the bottom of the first shear trap 1050 for docking with the dissolver, thereby transferring the fuel segment sheared by the shearing device 400 to the dissolver. The second shear trap 1060 is correspondingly disposed with the cleaning and transfer station 3 for collecting wastewater after rinsing the end.

[0173] like Figure 40 and Figure 41As shown, in this embodiment, the first shear trap 1050 is funnel-shaped, and a liquid seal pipe 1051 is connected to the bottom of the first shear trap 1050. The liquid seal pipe 1051 is used to dock with the dissolver, thereby achieving a sealed connection between the shear trap 1000 and the dissolver, forming a closed space between the shearing device 400 and the dissolver to prevent dust diffusion. In this embodiment, the first shear trap 1050 is set in a funnel shape, so that fuel segments falling into any position in the first shear trap 1050 can easily slide into the dissolver below, facilitating the collection of fuel segments.

[0174] In this embodiment, when the shearing device 400 shears the end, the end receiving container 1100 is located at the receiving station 2. At this time, the sheared end falls and is collected in the end receiving container 1100. After receiving, the end receiving container 1100 moves to the cleaning and transfer station 3. When the shearing device 400 shears the fuel segment of the spent fuel assembly, the end receiving container 1100 is located at the cleaning and transfer station 3. At this time, the sheared fuel segment can fall into the first shear trap 1050 and enter the dissolver connected to the dissolver chute through the dissolver chute for subsequent dissolution, realizing the classified collection and processing of the end and fuel segment.

[0175] like Figure 1 , 37 As shown in Figures 43 and 44, in some embodiments, the shearing system may further include a hydraulic drive unit 1200, which is connected to the clamping assembly and the movable blade assembly respectively, for driving the clamping assembly and the movable blade assembly to move respectively. The hydraulic drive unit 1200 is disposed outside the housing of the shearing device to avoid contamination by dust generated during shearing inside the housing 410, and also to avoid being affected by nuclear radiation from spent fuel assemblies, ensuring the normal operation of both and improving the reliability of spent fuel assembly shearing.

[0176] like Figure 43 As shown, the hydraulic drive device 1200 includes: a support portion 1210, a clamping drive portion 1221, a movable blade drive portion 1222, a clamping transmission portion 1231, and a movable blade transmission portion 1232. The support portion 1210 has two receiving cavities 1240, with the clamping drive portion 1221 housed in one of these cavities. The movable blade drive portion 1222 is located at one end of the support portion 1210. The clamping drive portion 1221 and the movable blade drive portion 1222 are configured to convert liquid pressure into mechanical energy. The movable blade transmission part 1232 is partially disposed in another receiving cavity 1240, and the movable blade transmission part 1232 is connected to the movable blade drive part 1222. The clamping transmission part 1231 is connected to the clamping drive part 1221. The clamping transmission part 1231 and the movable blade transmission part 1232 are arranged in parallel. The clamping drive part 1221 and the movable blade drive part 1222 are respectively used to drive the clamping transmission part 1231 and the movable blade transmission part 1232 to move axially.

[0177] In this embodiment of the invention, two drive units are combined to form a hydraulic drive device 1200, which can simultaneously provide power to the clamping assembly 430 and the movable blade assembly 440 of the shearing device 400. Furthermore, the hydraulic drive device 1200 in this embodiment adopts a segmented structural design, with the two drive units arranged in the front and rear sections respectively. One drive unit and the other drive unit have their drive shafts arranged parallel to each other, resulting in a compact overall structure and excellent engineering applicability.

[0178] In some embodiments, the clamping drive and the movable blade drive are hydraulic cylinders, and the movement is smooth when powered by hydraulic cylinders. When the hydraulic drive device 1200 of this embodiment is used in the shearing device 400 of the spent fuel assembly, the clamping and shearing of the spent fuel assembly can be powered by two drive units respectively, so as to realize the clamping and shearing of the spent fuel assembly simultaneously.

[0179] In this embodiment, two transmission parts are disposed on the same side of the two drive parts, so that the two transmission parts can be connected to the pressing moving part 432 and the movable blade mounting part 442 in the shearing device 400 respectively, so as to drive the pressing moving part 432 and the movable blade mounting part 442 to move, thereby realizing the pressing and shearing of the spent fuel assembly.

[0180] Specifically, such as Figure 44 As shown, the clamping drive unit 1221 and the movable blade drive unit 1232 are arranged side-by-side in parallel within the two receiving cavities 1240, resulting in a compact overall structure. The clamping drive unit 1231 and the movable blade drive unit 1232 pass through the side wall of the housing. The clamping drive unit 1231 can connect to the clamping component within the shearing device, thereby driving the clamping component to clamp the spent fuel assembly. The movable blade drive unit 1232 can connect to the shearing component within the shearing device, thereby driving the shearing component to move and shear the spent fuel assembly. In this embodiment, the clamping drive unit 1221 and the movable blade drive unit 1222 are located in the front and rear sections. The movable blade drive unit 1222, located at the end of the support unit 1210 away from the drive unit, drives the shearing component, and the clamping drive unit 1221, located within the receiving cavity 1240, drives the clamping component. This satisfies the different stroke requirements of the clamping component and the shearing component in the shearing device.

[0181] Regarding the embodiments of the present invention, it should also be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0182] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A shearing system for spent fuel assemblies, characterized in that, Pushing device; A rotary hopper for receiving and containing the spent fuel assembly; A rotary switching device is provided, wherein the rotary hopper is disposed on the rotary switching device, and the rotary switching device is configured to support and drive the rotary hopper to rotate, so that the rotary hopper switches between a receiving station and a feeding station, thereby changing the direction of the spent fuel assembly in the rotary hopper; A shearing device having a feed inlet, and a rotating hopper rotatably disposed between the shearing device and the pushing device; When the rotating hopper rotates to the receiving station, it is used to receive the spent fuel assembly; when the rotating hopper rotates to the feeding station, both ends of the rotating hopper are respectively sealed and connected to the feed inlets of the pushing device and the shearing device. The pushing device is used to push the spent fuel assembly in the rotating hopper toward the shearing device, so as to push the spent fuel assembly into the shearing device through the feed port; The shearing device is used to shear spent fuel assemblies pushed into the shearing device; The pushing device includes: A push hopper is located at the end of the rotating hopper away from the shearing device, and the push hopper corresponds to the feed inlet of the shearing device. When the rotating hopper is located at the feeding station, its two ends are respectively sealed and connected to the push hopper and the feed inlet. The system also includes: A receiving transition bin is provided for connection to an external feeding device. The receiving transition bin is arranged parallel to the pushing bin. The rotating bin is rotatably arranged between the receiving transition bin and the shearing device. The rotary switching device is configured to drive the rotary hopper to rotate eccentrically by 180°; When the rotary hopper rotates to the receiving station, the rotary hopper is connected to the receiving transition chamber, and the spent fuel assembly enters the rotary hopper via the receiving transition chamber; When the rotating hopper rotates to the feeding station, the rotating hopper is connected to the pushing hopper.

2. The system according to claim 1, characterized in that, The rotary switching device includes: Power components; A drive shaft, one end of which is connected to the power assembly, the power assembly being used to drive the drive shaft to rotate; A rotating bearing assembly is connected to the other end of the drive shaft, the drive shaft being used to drive the rotating bearing assembly to rotate about an axis perpendicular to the drive shaft; The rotating hopper is supported by the rotating bearing assembly, which supports and drives the rotating hopper to rotate, so that the rotating hopper can switch between the receiving station and the feeding station.

3. The system according to claim 2, characterized in that, The rotating load-bearing assembly includes: The rotating hopper is supported by the supporting part; The main body portion, wherein the supporting portion is rotatably disposed on the main body portion; A power input unit is provided, and a drive shaft is connected to the power input unit. The drive shaft is used to drive the power input unit to rotate about a first axis; the first axis is parallel to the axis of the drive shaft. The power output unit is configured to drive the power output unit to rotate, and the power output unit drives the bearing unit to rotate around a second axis, wherein the first axis is perpendicular to the second axis.

4. The system according to claim 1, characterized in that, The pushing device includes: Power components; A drive shaft, one end of which is connected to the power assembly, the power assembly being used to drive the drive shaft to rotate; A chain assembly, wherein the chain assembly is connected to the other end of the drive shaft, and the drive shaft is used to drive the chain assembly to reciprocate; A pushing component is disposed within the pushing hopper and connected to the chain assembly. The chain assembly is used to drive the pushing component to move within the pushing hopper and the rotating hopper, thereby pushing the spent fuel assembly within the rotating hopper to the shearing device.

5. The system according to claim 4, characterized in that, The chain assembly includes: A chain box, on which the pusher bin is supported, and the pusher bin is connected to the chain box; A sprocket is disposed inside the pusher hopper and is connected to the drive shaft, which drives the sprocket to rotate. A chain is movably disposed within the chain box. One end of the chain is connected to the pushing component within the pushing hopper. The chain cooperates with the sprocket, such that the rotation of the sprocket drives the chain to move.

6. The system according to claim 5, characterized in that, The push component includes: A push connection part is connected to the chain, and the chain is used to drive the push connection part to move within the push hopper and the rotating hopper; A propulsion unit is detachably connected to the push connection unit, the push connection unit being configured to push the propulsion unit to move, the propulsion unit being used to propel the spent fuel assembly.

7. The system according to claim 1, characterized in that, Also includes: A feeding transition bin is fixedly disposed between the rotating bin and the shearing device, and the feeding transition bin is positioned corresponding to the pushing bin. One end of the feeding transition bin is sealed to the feed inlet of the shearing device. When the rotating hopper rotates to the feeding station, both ends of the rotating hopper are connected to the pushing hopper and the feeding transition hopper, respectively. The pushing device is used to drive the spent fuel assembly in the rotating hopper to move, so as to push the spent fuel assembly into the shearing device via the feeding transition hopper.

8. The system according to claim 7, characterized in that, Also includes: An inflatable sealing assembly is connected to one end of the feeding transition chamber near the shearing device. The inflatable sealing assembly is configured to be inflatable and is used to seal the feed inlet connecting the feeding transition chamber and the shearing device.

9. The system according to claim 7, characterized in that, Also includes: An inflatable sealing assembly is connected to the feeding transition chamber and the pushing chamber at one end near the rotating chamber; When the two ends of the rotating hopper are respectively connected to the pushing hopper and the feeding transition hopper, the inflatable sealing assembly is inflated to seal the connection between the rotating hopper and the pushing hopper or the feeding transition hopper. When the rotating hopper rotates, the air-sealing assembly deflates to provide space for the rotation of the rotating hopper.

10. The system according to claim 8 or 9, characterized in that, The inflatable sealing assembly includes: A sealing mounting part is connected to the end of the push hopper or the feeding transition hopper; An inflatable cushion is attached to the side of the sealed mounting portion away from the push hopper or the feeding transition hopper; The inflatable cushion has a channel that matches the spent fuel assembly so that the spent fuel assembly can move through the channel.

11. The system according to any one of claims 1-9, characterized in that, The shearing device includes: The housing has the feed inlet formed thereon; A blade fixing assembly is fixed inside the housing and its shape matches that of the spent fuel assembly for supporting the spent fuel assembly. A clamping assembly is movably disposed within the housing. The clamping assembly and the fixed blade assembly are correspondingly disposed on both sides of the feed inlet. The clamping assembly is movable relative to the fixed blade assembly and is used to clamp the spent fuel assembly against the fixed blade assembly. A movable blade assembly is movably disposed within the housing, the moving direction of the movable blade assembly is parallel to the moving direction of the clamping assembly, and the movable blade assembly is disposed parallel to the fixed blade assembly; When the movable blade assembly moves toward the fixed blade assembly, the movable blade assembly cooperates with the fixed blade assembly to cut the spent fuel assembly.

12. The system according to claim 11, characterized in that, The movable blade assembly and the clamping assembly are movably supported on the side wall of the housing. The bottom of the housing has a discharge port for discharging the cut-off end and fuel segment of the spent fuel assembly.

13. The system according to claim 12, characterized in that, Also includes: A shear trap is provided below the shearing device, and a connection port is formed at the top of the shear trap, which is sealed to the discharge port at the bottom of the box. The shear trap has an outlet at its bottom, which corresponds to the connection port and is connected to an external solvent. The sheared fuel segments fall into the shear trap and are collected in the solvent.

14. The system according to claim 13, characterized in that, A liquid seal groove is formed at the edge of the connection port of the shear trap, and the liquid seal groove is configured to contain sealing liquid. A sealing plate is connected to the bottom of the discharge port of the shearing device, and the sealing plate is partially inserted into the liquid seal tank to seal the shearing trap and the shearing device.

15. The system according to claim 13, characterized in that, Also includes: An end receiving container is movably disposed within the shear trap and is configured to move between a receiving station and a cleaning and transfer station. The receiving station is located below the connection port, and the cleaning and transfer station is located away from the connection port and the outlet. When the shearing device cuts the end of the spent fuel assembly, the end receiving container moves to the receiving station to receive the cut end. When the shearing device cuts the fuel segment of the spent fuel assembly, the end receiving container moves to the cleaning and transfer station so that the cut fuel segment is collected in the dissolver via the outlet.

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