Spinning switch device for spent fuel assemblies

Abstract

The embodiment of the present application relates to the technical field of spent fuel reprocessing, and particularly discloses a rotating switching device of a spent fuel assembly, which is used for rotating the spent fuel assembly before the spent fuel assembly is fed to a shearing device. The rotating switching device comprises a power assembly, a transmission shaft, one end of the transmission shaft being connected with the power assembly, the power assembly being used for driving the transmission shaft to rotate, a rotating bearing assembly, the rotating bearing assembly being in transmission connection with the other end of the transmission shaft, the transmission shaft being used for driving the rotating bearing assembly to rotate around an axis perpendicular to the transmission shaft, and a rotating bin, the rotating bin being borne on the rotating bearing assembly, the rotating bearing assembly being used for supporting and driving the rotating bin to rotate so as to switch between a receiving station and a feeding station, and the rotating bin being used for accommodating the spent fuel assembly. In the embodiment of the present application, the rotating bearing assembly is arranged, the rotating bin can be rotated in the horizontal direction, and the spent fuel assembly can be turned around during the feeding process of the spent fuel assembly.

Description

Technical Field

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

[0002] The reprocessing of spent fuel assemblies generally includes shearing, chemical dissolution of fuel segments, chemical separation, and tail-end treatment of uranium and plutonium. During shearing, the shearing system breaks down the spent fuel assembly and provides processable spent fuel fragments for subsequent dissolution processes. Before shearing begins, the spent fuel assembly from the charging hot chamber needs to be conveyed to the shearing system to perform the shearing. Summary of the Invention

[0003] Embodiments of the present invention provide a rotary switching device for spent fuel assemblies, used to rotate the spent fuel assemblies before they are fed to a shearing device. The rotary switching device includes: a power assembly; a drive shaft, one end of which is connected to the power assembly, the power assembly driving the drive shaft to rotate; a rotary bearing assembly, the rotary bearing assembly being drively connected to the other end of the drive shaft, the drive shaft driving the rotary bearing assembly to rotate about an axis perpendicular to the drive shaft; and a rotary hopper, the rotary hopper being supported by the rotary bearing assembly, the rotary bearing assembly supporting and driving the rotary hopper to rotate, thereby switching between a receiving station and a feeding station, the rotary hopper being used to contain the spent fuel assemblies.

[0004] In embodiments of the present invention, by setting a rotating bearing component, the rotating hopper can be rotated in the horizontal direction to turn the spent fuel assembly fed into the rotating hopper around and rotate it from the bottom end facing forward to the top end facing forward, so that the spent fuel assembly is conveyed to the shearing device 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. 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 the structure of a rotary switching device according to an embodiment of the present invention.

[0007] Figure 2 This is a partial structural schematic diagram of a rotary switching device according to an embodiment of the present invention.

[0008] Figure 3 This is a schematic diagram of the structure of a power assembly and a drive shaft according to an embodiment of the present invention.

[0009] Figure 4 yes Figure 3 Enlarged view of the power unit.

[0010] Figure 5 This is a schematic diagram of the structure of a transmission shaft according to an embodiment of the present invention.

[0011] Figure 6 This is a cross-sectional view of a drive shaft according to an embodiment of the present invention.

[0012] Figure 7 This is a schematic diagram of the structure of a rotating bearing assembly according to an embodiment of the present invention.

[0013] Figure 8 This is a cross-sectional view of a rotating bearing assembly according to an embodiment of the present invention.

[0014] Figure 9 This is a schematic diagram of a rotary switching device according to an embodiment of the present invention.

[0015] Figure 10 This is a schematic diagram of the structure of a coupling according to an embodiment of the present invention.

[0016] Figure 11 yes Figure 10 A structural schematic diagram of the coupling from another perspective.

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

[0018] Figure 13 This is a schematic diagram of a coupling in an open state according to an embodiment of the present invention.

[0019] Figure 14 This is a schematic diagram of the structure of a rotating hopper according to an embodiment of the present invention.

[0020] Figure 15 yes Figure 14 A structural schematic diagram of the rotating silo from another perspective.

[0021] Figure 16 This 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.

[0022] Figure 17 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 18 This is a schematic diagram of the structure of a snap-fit ​​assembly according to an embodiment of the present invention.

[0024] Figure 19This is a schematic diagram of a snap fastener assembly in a pressed state according to an embodiment of the present invention.

[0025] Figure 20 This is a schematic diagram of a snap-fit ​​assembly being pressed against a spent fuel assembly according to an embodiment of the present invention.

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

[0027] Figure 22 This is a schematic diagram of the installation process of an inflatable sealing assembly according to an embodiment of the present invention.

[0028] Figure 23 This is a schematic diagram of the installation of an inflatable sealing assembly and a transition hopper according to an embodiment of the present invention.

[0029] Figure 24 yes Figure 1 A magnified view from another perspective at point B in the middle.

[0030] Figure 25 This is a schematic diagram of the structure of a positioning component according to an embodiment of the present invention.

[0031] Figure 26 This is a schematic diagram of a positioning component in a positioning state according to an embodiment of the present invention.

[0032] Figure 27 This is a schematic diagram of the positioning component in the open state according to an embodiment of the present invention.

[0033] Figure 28 yes Figure 2 Enlarged view of point C in the middle.

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

[0035] Figure 30 This is a cross-sectional view of a locking assembly according to an embodiment of the present invention.

[0036] 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

[0037] 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. Obviously, the described embodiments are only one embodiment of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of this application without creative effort are within the scope of protection of this application.

[0038] It should be noted that, unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by a person skilled in the art to which this application pertains. Where the terms "first," "second," etc., are used throughout, they are used only to distinguish similar objects and should not be construed as indicating or implying their relative importance, order of precedence, or implicitly specifying the number of technical features indicated. It should be understood that the data described by "first," "second," etc., can be interchanged where appropriate. Furthermore, for ease of description, spatial relative terms such as "above," "below," "top," and "bottom" may be used here, solely to describe the spatial positional relationship between one device or feature as shown in the figure and other devices or features. This should be understood to also include different orientations during use or operation besides those shown in the figure.

[0039] The inventors of this invention have discovered that in conventional spent fuel 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 assemblies need to be sheared sequentially in the order of top end, fuel section, and bottom end. Therefore, embodiments of this invention provide a rotary switching device for rotating the spent fuel assembly before it is fed into the shearing device, thereby achieving reversal of the spent fuel assembly.

[0040] like Figure 1 and Figure 2 As shown, the rotary switching device in this embodiment includes a power assembly 100, a drive shaft 200, a rotary bearing assembly 300, and a rotary hopper 400. One end of the drive shaft 200 is connected to the power assembly 100, which drives the drive shaft 200 to rotate. The rotary bearing assembly 300 is connected to the other end of the drive shaft 200, which drives the rotary bearing assembly 300 to rotate about an axis perpendicular to the drive shaft 200. The rotary hopper 400 is supported by the rotary bearing assembly 300, which supports and drives the rotary hopper 400 to rotate, switching between a receiving station and a feeding station. The rotary hopper 400 is used to contain spent fuel assemblies.

[0041] In this embodiment of the invention, by setting a rotating bearing component 300, the rotating hopper 400 can be rotated in the horizontal direction to change the direction of the spent fuel assembly fed into the rotating hopper 400. The spent fuel assembly in the rotating hopper 400 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 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 the top end, fuel section, and bottom end.

[0042] In this embodiment, when the rotary hopper 400 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 300 drives the rotary hopper 400 to rotate, causing the rotary hopper 400 to switch to the feeding position, while simultaneously reversing the direction of the spent fuel assemblies. When the rotary hopper 400 is in the feeding position, the spent fuel assemblies inside the rotary hopper 400 can be pushed into the shearing device.

[0043] like Figure 3 and Figure 4 As shown, in some embodiments, the power assembly 100 includes a driver 110 and a reducer 120. The driver 110 provides power to the drive shaft 200, and the reducer 120 is connected between the driver 110 and the drive shaft 200. The reducer 120 transmits the power from the driver 110 to the drive shaft 200 while reducing the rotational speed so that the rotational speed of the drive shaft 200 meets the requirements. In some embodiments, the driver 110 is a motor, such as a servo motor.

[0044] Furthermore, a coupling 130 is connected between the driver 110 and the reducer 120. The coupling 130 can compensate for the misalignment between the output shaft of the driver 110 and the input shaft of the reducer 120, and also has a buffering and vibration damping function. For example, the coupling 130 in this embodiment can be a flexible coupling.

[0045] Since the rotating hopper 400 is used to contain spent fuel assemblies and is radioactive, the rotating support assembly 300 and the rotating hopper 400 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 100 is located outside the radioactive environment where the rotating support assembly 300 and the rotating hopper 400 are located, for example, outside the feeding hot chamber, thereby preventing the power assembly 100 from being affected by radioactive radiation and thus ensuring its normal operation.

[0046] like Figure 5 and Figure 6 As shown, the drive shaft 200 includes a solid shaft 210, a hollow shaft 220, and a fixing part 230. The solid shaft 210 is connected to the power assembly 100, and the hollow shaft 220 is connected between the solid shaft 210 and the rotating bearing assembly 300. The solid shaft 210 is rotatably fitted into the fixing part 230, which is configured to penetrate through the outer wall. The fixing part 230 is used to install the solid shaft 210 in the outer wall, and the outer wall is used to isolate the power assembly 100 from the radioactive environment. In this embodiment, the outer wall can be the wall of the feeding hot chamber. The drive shaft 200 penetrates through the outer wall, thereby transmitting the power provided by the power assembly 100 outside the feeding hot chamber to the rotating bearing assembly 300 inside the feeding hot chamber.

[0047] In this embodiment, the solid shaft 210 penetrates the external wall, while the hollow shaft 220 is suspended between the external wall and the rotating load-bearing assembly 300. Using a solid shaft 210 for the portion penetrating the wall increases the strength and torsional resistance of the drive shaft 200, while using a hollow shaft 220 for the suspended portion reduces deflection caused by the drive shaft 200's own weight, effectively ensuring the horizontality of the drive shaft 200. Furthermore, the solid shaft 210 and the hollow shaft 220 can be connected by welding.

[0048] In this embodiment, the fixing part 230 wraps around the solid shaft 210, allowing the solid shaft 210 to rotatably penetrate the outer wall. Figure 6 As shown, in some embodiments, the fixing part 230 includes a first fixing part 231, a second fixing part 232, and a support part 233. The first fixing part 231 is disposed within the outer wall, and the second fixing part 232 is detachably fixed within the first fixing part 231, and the second fixing part 232 is sleeved on the outside of the solid shaft 210. The support part 233 is disposed between the second fixing part 232 and the solid shaft 210, and the support part 233 is configured to rotatably support the solid shaft 210 within the second fixing part 232.

[0049] In this embodiment, the solid shaft 210 is encased in a first fixing part 231 and a second fixing part 232. This not only allows the solid shaft 210 to be stably and rotatably supported in the external wall, but also enables the disassembly and assembly of the drive shaft 200. During disassembly, the connection between the drive shaft 200 and the rotating bearing assembly 300 is first disconnected, then the connection between the first fixing part 231 and the second fixing part 232 is disconnected, and finally the second fixing part 232 and the drive shaft 200 are removed together from the external wall, thus disassembling the drive shaft 200.

[0050] For example, the first fixing part 231 is fitted into the outer wall, and the first fixing part 231 and the second fixing part 232 are detachably connected by fasteners, thereby enabling the disassembly of the first fixing part 231 and the second fixing part 232. Furthermore, the second fixing part 232 can also be connected to the solid shaft 210 by fasteners. For example, the first fixing part 231 is a first bushing, the second fixing part 232 is a second bushing, the support part 233 is a bearing, and the fastener is a bolt.

[0051] During disassembly, first disconnect the drive shaft 200 from the rotating bearing assembly 300. Then, remove the bolts connecting the first fixing part 231 and the second fixing part 232. Next, attach a sealing bag to the end of the first fixing part 231 to shield against nuclear radiation in the feeding hot chamber. Finally, pull the second fixing part 232 and the drive shaft 200 together from the outer wall into the sealing bag to disassemble the drive shaft 200.

[0052] like Figure 7 and Figure 8 As shown, in some embodiments, the rotating bearing assembly 300 includes a bearing portion 310, a body portion 320, a power input portion 330, and a power output portion 340. A rotating hopper 400 is supported on the bearing portion 310, which is rotatably mounted on the body portion 320. A drive shaft 200 is connected to the power input portion 330 and drives the power input portion 330 to rotate about a first axis parallel to the axis of the drive shaft 200. The power input portion 330 is configured to drive the power output portion 340 to rotate, and the power output portion 340 drives the bearing portion 310 to rotate about a second axis perpendicular to the first axis.

[0053] Specifically, the rotation axis of the power input unit 330 is parallel to the bearing surface of the bearing unit 310 and also parallel to the axial direction of the transmission shaft 200. Conversely, the rotation axis of the power output unit 340 is perpendicular to the bearing surface of the bearing unit 310 and also perpendicular to the axial direction of the transmission shaft 200. By providing the power input unit 330 and the power output unit 340, the torsional force input from the transmission shaft 200 is converted into a torsional torque perpendicular to it in another direction. This enables the rotation reversal function of the bearing unit 310 and facilitates the rational arrangement of the relative positions and connection methods between the rotating bearing assembly 300 and the power assembly 100.

[0054] In some embodiments, the magnitude of the torsional torque can be controlled by controlling the output power of the power assembly 100. The rotation angle of the bearing portion 310 can be controlled by controlling the rotation angle of the drive shaft 200. For example, the bearing portion 310 can be rotated 180 degrees, thereby causing the rotating hopper 400 carried by the bearing portion 310 to rotate 180 degrees in the horizontal direction, realizing the switching of the rotating hopper 400 between the receiving station and the feeding station, as well as the reversal of the spent fuel assembly within the rotating hopper 400.

[0055] In some embodiments, the power output part 340 is fixedly connected to the support part 310, so that the support part 310 and the power output part 340 can rotate synchronously. The fixed connection method between the power output part 340 and the support part 310 includes, but is not limited to, interference fit, key connection, etc.

[0056] like Figure 7 As shown, the power input section 330 is partially disposed outside the main body section 320, and the other part is disposed inside the main body section 320. One end of the power input section 330 extending out of the main body section 320 is connected to the drive shaft 200, thereby providing power to the power input section 330.

[0057] like Figure 8 As shown, in some embodiments, the power input section 330 is a worm gear, and the power output section 340 is a worm wheel, with the worm gear meshing with the worm wheel. For example... Figure 9As shown, the power assembly 100 drives the transmission shaft 200 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 310 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 310 from rotating excessively due to inertia, thus achieving stable control of the rotation of the bearing section 310.

[0058] Furthermore, the drive shaft 200 can drive the power input unit 330 and the power output unit 340 to rotate forward or in reverse, thereby enabling the bearing unit 310 to rotate both forward and in reverse, so as to realize the switching of the rotating hopper 400 between the receiving station and the feeding station.

[0059] like Figure 7 As shown, in some embodiments, the support portion 310 is provided with multiple lifting components 311, which are used to connect with external lifting equipment to realize the lifting and disassembly of the rotating support assembly 300. The body portion 320 can be a box structure, and the body portion 320 has space to accommodate other components. For example, the power input portion 330 and the power output portion 340 can be located inside the body portion 320.

[0060] like Figure 8 As shown, in some embodiments, the rotating bearing assembly 300 further includes a support portion 350, which is disposed between the bearing portion 310 and the body portion 320, such that the bearing portion 310 is rotatably supported by the support portion 350, and the support portion 350 can stably support the bearing portion 310. Optionally, the support portion 350 can be a slewing bearing capable of withstanding large axial and radial loads and overturning moments.

[0061] In some embodiments, the support portion 310 and the body portion 320 are sealed together, the support portion 310 is rotatable relative to the body portion 320 and the connection is sealed to prevent the structure inside the body portion 320 from being contaminated.

[0062] Furthermore, such as Figure 7 As shown, the main body 320 is provided with an air inlet pipe 361, which is used to supply other substances into the main body 320, so that the main body 320 can maintain a positive pressure against the outside, thereby effectively preventing external dust and other impurities from entering the main body 320, and further ensuring the seal between the support part 310 and the main body 320. For example, the air inlet pipe 361 can be provided on the side of the main body 320.

[0063] like Figure 1 and Figure 2As shown, in some embodiments, the rotary switching device further includes a coupling 500, which is connected between the power input unit 330 and the drive shaft 200 to compensate for radial and axial errors between the power input unit 330 and the drive shaft 200.

[0064] like Figure 10 As shown, the coupling 500 in this embodiment includes a coupling body 510 and a drive assembly. The end of the drive shaft 200 away from the power assembly 100 is detachably connected to one end of the coupling body 510, and the power input unit 330 is connected to the other end of the coupling body 510. The drive assembly is connected to the coupling body 510 and is used to drive the coupling body 510 to move axially along the drive shaft 200, so that the drive shaft 200 is connected to or disconnected from the coupling body 510.

[0065] In this embodiment, the drive assembly drives the coupling body 510 to move axially along the drive shaft 200, allowing the drive shaft 200 to quickly disengage from the coupling body 510. This enables rapid disassembly of the drive shaft 200 from the coupling 500, facilitating the removal of the drive shaft 200 or the rotating load-bearing assembly 300. Furthermore, the drive shaft 200 can be inserted into the coupling body 510, enabling rapid installation between the drive shaft 200 and the coupling 500. This embodiment, by providing the coupling 500, allows for rapid connection and disconnection between the drive shaft 200 and the power input section 330 of the rotating load-bearing assembly 300.

[0066] like Figure 10 and Figure 11 As shown, in some embodiments, the drive assembly includes a support member 521, a swing member 522, a connecting shaft 523, and a sliding member 524. The support member 521 is fixed to the rotary bearing assembly 300; for example, the support member 521 can be fixed to the side of the body portion 320. The support member 521 is provided with a first limiting hole 525 and a second limiting hole 526. One end of the swing member 522 is inserted into the first limiting hole 525 or the second limiting hole 526, and the other end of the swing member 522 is connected to the connecting shaft 523. The connecting shaft 523 is rotatably mounted on the support member 521 and is perpendicular to the drive shaft 200. One end of the sliding member 524 is connected to the connecting shaft 523, and the other end of the sliding member 524 is slidably connected to the coupling body 510.

[0067] Among them, such as Figure 12 As shown, when the swing member 522 is positioned in the first limiting hole 525, the coupling body 510 is connected to the drive shaft 200; as Figure 13As shown, when the swing member 522 is positioned in the second limiting hole 526, the drive shaft 200 disengages from the coupling body 510, allowing for the disassembly of the drive shaft 200 or the rotating bearing assembly 300. When the swing member 522 swings between the first limiting hole 525 and the second limiting hole 526, it drives the connecting shaft 523 and the sliding member 524 to rotate around the axis of the connecting shaft 523. When the sliding member 524 rotates, it drives the coupling body 510 to move axially along the drive shaft 200, thereby achieving the connection and disconnection between the drive shaft 200 and the coupling body 510.

[0068] Furthermore, a limiting block 527 is provided on the support member 521. The limiting block 527 is used to restrict the swinging member 522 from swinging between the first limiting hole 525 and the second limiting hole 526, so as to prevent the swinging member 522 from swinging excessively and causing excessive movement of the coupling body 510, which would affect the transmission shaft 200 or the power input part 330. Specifically, two limiting blocks 527 are provided on the support member 521 to limit the swing angle of the swinging member 522 so that the swinging member 522 swings between the first limiting hole 525 and the second limiting block hole 526.

[0069] In some embodiments, the swing member 522 can be remotely controlled to swing between the first limiting hole 525 and the second limiting hole 526, thereby enabling quick installation and disassembly between the coupling 500 and the drive shaft 200. Specifically, as shown... Figure 10 As shown, the swing member 522 is provided with an operating part 5221 at the end away from the connecting shaft 523. The operating part 5221 facilitates remote operation by the robot arm, thereby realizing quick assembly and disassembly between the transmission shaft 200 and the rotating bearing assembly 300.

[0070] When the coupling 500 is in operation, the swing member 522 is inserted into the first limiting hole 525, thereby restricting the position of the coupling body 510 and preventing the coupling body 510 from moving and disconnecting from the drive shaft 200 during the operation of the rotation switching device. When disassembly is required, the manipulator can be operated to move the operating part 5221 upward to pull the swing member 522 out of the first positioning hole, releasing the limiting of the coupling 500. Then, the manipulator can push the swing member 522 to move it to the second limiting hole 526, thereby causing the coupling body 510 to move axially along the drive shaft 200 to disconnect the connection between the drive shaft 200 and the coupling body 510. Conversely, moving the swing member 522 and inserting it into the second positioning hole enables a quick connection between the coupling 500 and the drive shaft 200.

[0071] In some embodiments, a connecting cylinder is provided on the support member 521, and a connecting shaft 523 is rotatably disposed within the connecting cylinder, thereby enabling the connecting shaft 523 to rotate relative to the support member 521. A bearing is provided between the connecting shaft 523 and the connecting cylinder to support the rotation of the connecting shaft 523 within the connecting cylinder.

[0072] like Figure 10 As shown, in some embodiments, the coupling body 510 is cylindrical, and its interior forms a receiving space for accommodating the drive shaft 200 and the power input part 330. The drive shaft 200 is inserted into the coupling body 510 from one end, and the power input part 330 is inserted into the coupling body 510 from the other end, thereby realizing the transmission connection between the drive shaft 200 and the power input part 330.

[0073] Furthermore, the inner surface of the coupling body 510 is provided with a toothed portion 512, in which multiple teeth are arranged circumferentially along the coupling body 510, and each tooth extends along the direction of rotation of the coupling body 510. Both ends of the coupling body 510 are provided with toothed portions 512, and the ends of the drive shaft 200 and the power input portion 330 are provided with toothed mating portions that mesh with the toothed portions 512. Through the meshing of the toothed portions 512 and the toothed mating portions, the connection and transmission between the coupling body 510 and the drive shaft 200 and the power input portion 330 are realized. For example, the coupling body 510 is a drum-shaped toothed sleeve.

[0074] When the coupling body 510 moves axially along the drive shaft 200, the drive shaft 200 can be inserted into the coupling body 510 and mesh with the toothed portion 512, thereby driving the coupling body 510 to rotate. Simultaneously, the power input portion 330 is connected to the coupling body 510 and meshes with the toothed portion 512 at the other end of the coupling body 510, so that when the coupling body 510 rotates, it drives the power input portion 330 to rotate, thus realizing power transmission.

[0075] like Figure 10 As shown, in some embodiments, a sliding groove 511 is provided on the coupling body 510, and the sliding groove 511 is arranged along the circumferential direction of the coupling body 510. A sliding member 524 is slidably connected within the sliding groove 511, and the sliding member 524 surrounds a portion of the coupling body 510. Specifically, when the swing member 522 swings between the first limiting hole 525 and the second limiting hole 526 and drives the sliding member 524 to rotate, the sliding member 524 slides within the sliding groove 511 to counteract the movement of the sliding member 524 along the radial direction of the drive shaft 200, thereby driving the coupling body 510 to move axially along the drive shaft 200; when the drive shaft 200 drives the coupling body 510 and the power input part 330 to rotate, the sliding member 524 slides within the sliding groove 511, causing the coupling body 510 to rotate relative to the sliding member 524.

[0076] In some embodiments, the swing member 522 is perpendicular to the connecting shaft 523, and the connecting shaft 523 is perpendicular to the transmission shaft 200. Specifically, the connecting shaft 523 is perpendicular to the bearing surface of the bearing portion 310. When one end of the swing member 522 moves between the first limiting hole 525 and the second limiting hole, it makes a circular motion with the axis of the connecting shaft 523 as the center, and at the same time drives the connecting shaft 523 to rotate. When the connecting shaft 523 rotates, it drives the sliding member 524 connected to it to make a circular motion with the axis of the connecting shaft 523 as the center, so that the end of the sliding member 524 slides in the sliding groove 511 and moves along the axial direction of the transmission shaft 200, thereby driving the coupling body 510 to move along the axial direction of the transmission shaft 200. This prevents the sliding member 524 from driving the coupling body 510 to move radially, which would cause the coupling body 510 to get stuck and unable to move.

[0077] For example, the slider 524 is a fork structure, which includes a connecting rod and a C-shaped member. The connecting rod connects the connecting shaft 523 and the C-shaped member. The C-shaped member surrounds the coupling body 510, and its end is disposed within the sliding groove 511, allowing it to slide within the sliding groove 511. Furthermore, there is a gap between the end of the C-shaped member and the surface of the sliding groove 511, thereby enabling the C-shaped member to slide smoothly within the sliding groove 511.

[0078] In some embodiments, a limiting portion is provided on the rotating bearing assembly 300 to fix the rotating hopper 400 and prevent the rotating hopper 400 from moving on the rotating bearing assembly 300. Specifically, the limiting portion is provided on the bearing portion 310 to fix the rotating hopper 400 to the bearing portion 310.

[0079] like Figure 14 and 15 As shown, the rotary hopper 400 includes a hopper body 410 and a mounting plate 420. The hopper body 410 is used to accommodate spent fuel assemblies, and the mounting plate 420 is fixed to both sides of the hopper body 410. Figure 16 As shown, the mounting plate 420 cooperates with the limiting part to limit the position of the hopper body 410 on the rotating bearing assembly 300.

[0080] like Figure 7As shown, in some embodiments, the limiting portion includes a plurality of first limiting portions 312 and a plurality of second limiting portions 313. The plurality of first limiting portions 312 are arranged on both sides of the mounting plate 420 along a first direction to fix the position of the rotating hopper 400 in the first direction; the plurality of second limiting portions 313 are arranged on both sides of the mounting plate 420 along a second direction to fix the position of the rotating hopper 400 in the second direction, thereby ensuring that the rotating hopper 400 remains in a stable position relative to the support portion 310 when the support portion 310 rotates, so that the rotating hopper 400 rotates synchronously with the support portion 310. The first direction is the extension direction of the rotating hopper 400, and the second direction is perpendicular to the extension direction of the rotating hopper 400.

[0081] Furthermore, a groove 421 is provided on the mounting plate 420 at a position corresponding to the limiting part, and the limiting part is located in the groove 421, thereby restricting the position of the rotating hopper 400.

[0082] In addition, the silo body 410 is also equipped with a lifting component 411, which is used to connect with external lifting equipment for lifting and remote assembly / disassembly of the rotating silo. For example, the lifting component 411 can be a lifting ring.

[0083] In some embodiments, the rotary hopper 400 is supported on one side of the rotation axis of the support portion 310. When the support portion 310 rotates 180 degrees around its rotation axis, the rotary hopper 400 rotates eccentrically relative to the center of the support portion 310, so that after the eccentric rotation, the rotary hopper 400 is parallel to the original extension direction of the rotary hopper 400, thereby enabling the rotary hopper 400 to dock with the receiving station or the feeding station.

[0084] like Figure 14 and Figure 15 As shown, in some embodiments, the rotary hopper 400 is provided with a positioning port 412. For example... Figure 17 As shown, the rotary switching device also includes a snap-fit ​​assembly 600, which is mounted on the rotary hopper 400 and located at the positioning port 412. The snap-fit ​​assembly 600 can rotate with the rotary hopper 400. The snap-fit ​​assembly 600 is configured to be inserted into the rotary hopper 400 via the positioning port 412 and cooperate with the spent fuel assembly. It is used to limit the position of the spent fuel assembly within the rotary hopper 400 when the rotary hopper 400 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.

[0085] like Figure 18As shown, in some embodiments, the snap-fit ​​assembly 600 includes a snap-fit ​​mounting portion 610, a snap-fit ​​portion 630, and a snap-fit ​​driving portion 620. The snap-fit ​​mounting portion 610 is mounted on the rotating hopper 400, and has a receiving space within it. An opening is provided at the bottom of the snap-fit ​​mounting portion 610, corresponding to the position of the positioning port 412. The snap-fit ​​portion 630 is movably disposed within the receiving space and matches the spent fuel assembly. The snap-fit ​​driving portion 620 is disposed on the snap-fit ​​mounting portion 610, connected to the snap-fit ​​portion 630, and is used to drive the snap-fit ​​portion 630 to move.

[0086] Among them, such as Figure 19 and Figure 20 As shown, when the rotary hopper 400 rotates, the snap fastener 630 descends into the rotary hopper 400 through the opening and positioning port 412 and presses against the spent fuel assembly 40 to limit the spent fuel assembly 40 and prevent it from shifting during rotation. When the rotary hopper 400 rotates to its position, for example, when the rotary hopper 400 rotates to the feeding station, the snap fastener 630 rises into the receiving space of the snap fastener mounting part 610 to release the limitation on the spent fuel assembly, so as to facilitate the pushing of the spent fuel assembly into the rotary hopper 400 and push the spent fuel assembly into the shearing device.

[0087] like Figure 19 and Figure 20 As shown, in some embodiments, the snap fastener 630 is a pressure plate with a limiting groove 631. The limiting groove 631 matches the spent fuel assembly 40, so that when the snap fastener 630 descends into the rotating hopper 400, the spent fuel assembly 40 can be pressed into the limiting groove 631 to prevent the spent fuel assembly from sliding or moving during rotation or earthquakes, thus ensuring safety.

[0088] like Figure 18 and Figure 19 As shown, in some embodiments, the snap-fit ​​drive unit 620 is a cylinder, and the snap-fit ​​drive unit 620 is provided with an air intake pipe 621 for supplying gas to the cylinder. For example, the cylinder is provided with two air intake pipes 621, which can be respectively located on both sides of the piston of the cylinder, and the cylinder is supplied with gas from the two air intake pipes 621 respectively, so that the cylinder can output power from two opposite directions, thereby driving the snap-fit ​​unit 630 to rise and fall.

[0089] like Figure 8As shown, the rotating support assembly 300 also includes an air supply pipe 362, which is disposed within the main body 320. The air supply pipe 362 has an inlet 3621 located within the main body 320 for connection to an air source, and an outlet 3622 located on the support portion 310 for connection to a cylinder to supply gas to the cylinder. For example, the inlet 3621 of the air supply pipe 362 may be located on the side of the main body 320, and the outlet 3622 may be located at the rotation center of the support portion 310. Furthermore, the air supply pipe 362 is rotatably connected to the support portion 310, so that the outlet of the air supply pipe 362 does not rotate when the support portion 310 rotates.

[0090] In this embodiment, the air supply pipe 362 is disposed inside the main body 320, so that when the bearing part 310 and the rotating hopper 400 and the snap fastening assembly 600 carried by the bearing part 310 rotate, the air supply pipe 362 will not rotate, and the connecting pipe between the air supply pipe 362 and the cylinder can make a circular motion with the air outlet 3622 of the air supply pipe 362 as the center. The connecting pipe between the air source and the air supply pipe 362 will not be displaced, thus avoiding the connecting pipe from moving and getting tangled when the snap fastening assembly 600 moves with the rotating hopper 400, which may even affect the rotation of the rotating hopper 400.

[0091] In some embodiments, the body 320 is provided with two air supply pipes 362, which are respectively connected to two air inlet pipes 621 of the cylinder, thereby supplying air to the cylinder from different directions to drive the buckle 630 to rise and fall.

[0092] Furthermore, the mounting plate 420 is provided with a clearance groove 422, the position of which corresponds to the air outlet 3622 of the air supply pipe 362. The air outlet 3622 is located inside the clearance groove 422, so that the air supply pipe 362 does not rotate when the bearing part 310 and the rotating hopper 400 rotate.

[0093] like Figure 1 As shown, in some embodiments, the rotary switching device further includes a transition hopper 700, which is fixedly disposed between the rotary hopper 400 and the shearing device. The rotary hopper 400 connects to the transition hopper 700 after rotating to the feeding station. The transition hopper 700 connects the rotary hopper 400 and the shearing device to push spent fuel assemblies to the shearing device via the transition hopper 700.

[0094] In some embodiments, the rotating bearing assembly 300 and the rotating hopper 400 are disposed in the feeding hot chamber, while the shearing device 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 within the rotating hopper 400 to the shearing device, a transition hopper 700 is installed within the external wall.

[0095] like Figure 1 As shown, an embedded part 710 is provided outside the transition silo 700. The embedded part 710 is installed in the external wall, and the transition silo 700 passes through the embedded part 710. The embedded part 710 is used to fix the transition silo 700 to avoid vibration and impact, and to ensure the stability of the transition silo 700. In some embodiments, the embedded part 710 is provided with anchor bolts, which are used to fix the embedded part 710 and the wall.

[0096] like Figure 17 As shown, in some embodiments, the rotary switching device further includes an inflatable sealing assembly 800, which is disposed at the end where the transition hopper 700 connects to the rotary hopper 400, for sealing the connection between the transition hopper 700 and the rotary hopper 400. Specifically, when the rotary hopper 400 and the transition hopper 700 are in communication, the inflatable sealing assembly 800 inflates to seal the connection between them; when the rotary hopper 400 rotates, the inflatable sealing assembly 800 deflates, creating a gap between the transition hopper 700 and the rotary hopper 400 to provide space for the rotation of the rotary hopper 400.

[0097] like Figure 21 As shown, the inflatable sealing assembly 800 includes a sealing mounting portion 810 and an inflatable pad 820. The sealing mounting portion 810 is installed at the end of the transition hopper 700, and the inflatable pad 820 is installed on the sealing mounting portion 810, with the inflatable pad 820 facing the rotating hopper 400. Both the sealing mounting portion 810 and the inflatable pad 820 are annular and match the transition hopper 700. The inflatable pad 820 forms a channel 821, which matches the spent fuel assembly. Thus, when the rotating hopper 400 and the transition hopper 700 are docked, the rotating hopper 400 can communicate with the transition hopper 700, facilitating the pushing of the spent fuel assembly in the rotating hopper 400 to the transition hopper 700 via the channel 821.

[0098] 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 400 rotates to the feeding position, it docks with the transition hopper 700. At this time, the inflation pad 820 is inflated through the inflation port 830 to fill the gap between the rotating hopper 400 and the transition hopper 700, ensuring the feeding channel between the rotating hopper 400 and the transition hopper 700 is sealed and preventing dust leakage. When the rotating hopper 400 starts to rotate, the inflation pad 820 deflates and retracts, thereby providing space for the rotation of the rotating hopper 400.

[0099] like Figure 22 and Figure 23As shown, a connecting flange 720 is provided at the end of the transition hopper 700. The connecting flange 720 is provided with a mounting groove, and the inflatable sealing assembly 800 is installed in the mounting groove, thereby realizing the installation and fixation of the inflatable sealing assembly 800. In addition, in some embodiments, the rotary switching device is provided with a locking assembly 900, which is used to fix the inflatable sealing assembly 800 to the end of the transition hopper 700.

[0100] like Figure 24 As shown, in some embodiments, the rotary switching device further includes a positioning component 1000, which is disposed on the transition hopper 700. The positioning component 1000 is used to fix the position of the rotary hopper 400 when it is rotated into place, so as to prevent displacement of the rotary hopper 400 after it is rotated into place.

[0101] like Figure 25 As shown, in some embodiments, the positioning component 1000 includes a positioning mounting component 1010, a positioning drive unit 1020, and a positioning unit 1030. The positioning mounting component 1010 is disposed on the transition hopper 700, the positioning drive unit 1020 is mounted on the positioning mounting component 1010, and the positioning unit 1030 is connected to the positioning drive unit 1020. The positioning drive unit 1020 is used to drive the positioning unit 1030 to move along the extension direction of the transition hopper 700.

[0102] like Figure 26 As shown, the rotating hopper 400 has a positioning hole 415 at its end. When the rotating hopper 400 rotates to its position, the positioning drive unit 1020 drives the positioning unit 1030 to move and insert into the positioning hole 415, so that the positioning component 1000 is in a positioning state, thereby realizing the positioning of the rotating hopper 400. Figure 27 As shown, when the positioning part 1030 moves out of the positioning hole 415, the positioning component 1000 is in the open state, thereby releasing the positioning of the rotating hopper 400 and facilitating the rotation of the rotating hopper 400.

[0103] For example, the positioning drive unit 1020 is a cylinder, and the cylinder is provided with an air inlet pipe 1021 for supplying air to the cylinder. The positioning unit 1030 is a positioning pin, and the cylinder can drive the positioning pin to move along the extension direction of the transition hopper 700, so that the positioning pin is inserted into or removed from the positioning hole 415 of the rotating hopper 400, thereby realizing the positioning and rotation of the rotating hopper 400.

[0104] In some embodiments, both ends of the rotating hopper 400 are provided with positioning holes 415. The positioning holes 415 and the positioning pins are aligned with the rotation center of the rotating hopper 400, so that when the rotating hopper 400 rotates to the receiving station and the feeding station, the positioning pins can be inserted into the positioning holes 415 at the ends of the rotating hopper 400 to realize the positioning of the rotating hopper 400 at the receiving station and the feeding station.

[0105] In some embodiments, the positioning part 1030 is provided with a limiting baffle 1031, and the end of the positioning drive part 1020 near the rotating hopper 400 is connected to a limiting mating part 1024. When the positioning drive part 1020 drives the positioning part 1030 to move toward the rotating hopper 400, the limiting baffle 1031 and the limiting mating part 1024 cooperate to prevent the positioning part 1030 from moving excessively.

[0106] like Figure 25 As shown, in some embodiments, the positioning and mounting assembly 1010 includes a positioning and fixing part 1011 and a positioning and power part 1012. The positioning and fixing part 1011 is fixed to the transition hopper 700. The positioning and power part 1012 is rotatably disposed through the positioning and fixing part 1011. The positioning and driving part 1020 is movably disposed on the positioning and power part 1012. The positioning and power part 1012 is configured to drive the positioning and driving part 1020 to move along the axial direction of the positioning and power part 1012 when driven to rotate by an external force, thereby ensuring that the positioning part 1030 is disengaged from the ends of the rotating hopper 400 and the transition hopper 700, and facilitating the lifting of the positioning and driving part 1020 for disassembly.

[0107] For example, the outer surface of the positioning power unit 1012 is provided with threads, and the positioning drive unit 1020 is provided with a threaded hole. The threaded hole matches the thread of the positioning power unit 1012. When the positioning power unit 1012 rotates under the drive of an external force, it can drive the positioning drive unit 1020 to move along the axial direction of the positioning power unit 1012. For example, the positioning power unit 1012 is a lead screw.

[0108] In addition, the positioning drive unit 1020 is provided with a guide unit 1022, which is located at both ends of the positioning power unit 1012, so that when the positioning power unit 1012 rotates, the positioning drive unit 1020 moves along the axial direction of the positioning power unit 1012 without rotating.

[0109] In some embodiments, an operating handwheel 1013 is provided at the end of the positioning power unit 1012 away from the positioning drive unit 1020, which facilitates gripping by a robotic arm for remote operation. A lifting part 1023 is provided on the positioning drive unit 1020. The lifting part 1023 is T-shaped, which facilitates remote gripping by external tools such as robotic arms, enabling remote assembly and disassembly of the positioning drive unit 1020.

[0110] like Figure 1and Figure 2 As shown, in some embodiments, the rotary switching device further includes a support base 10 and a limiting member 20. One end of the transition hopper 700 is supported on the support base 10, which supports both the transition hopper 700 and the rotary hopper 400. Figure 28 As shown, the limiting member 20 is disposed on the support base 10. The limiting member 20 is used to limit the position of the rotating hopper 400 and prevent the rotating hopper 400 from rotating excessively. In this embodiment, when the rotating hopper 400 rotates to its position, the side of the rotating hopper 400 touches the limiting member 20. The limiting member 20 can physically block the rotating hopper 400 to prevent the rotating hopper 400 from rotating excessively.

[0111] like Figure 28 As shown, in some embodiments, the rotation switching device further includes a limit detection element 30, which is disposed on the support base 10. The limit element 30 is used to detect whether the rotating hopper 400 has rotated to the correct position. When the rotating hopper 400 has rotated to the correct position, the side of the rotating hopper 400 contacts the limit detection element 30, thereby triggering the limit detection element 30 to send a position signal. Based on the position signal, the rotating hopper 400 is controlled to stop rotating to avoid over-rotation. For example, the limit detection element is a valve switch.

[0112] like Figure 14 and Figure 28 As shown, the rotating hopper 400 has two stops 413 on its side, which correspond to the positions of the limiting member 20 and the limiting detection member 30, respectively. When the rotating hopper 400 rotates to its position, the two stops 413 touch the limiting member 20 and the limiting detection member 30, respectively, to stop the rotation of the rotating hopper 400 by both physical and electrical signal control, thus preventing it from over-rotating.

[0113] In some embodiments, the rotary switching device further includes a locking assembly 900, which is configured to fix the locked components to predetermined positions. The locking assembly 900 can be remotely controlled to lock and unlock. When the locking assembly 900 is locked, the locked component is fixed in the predetermined position; when the locking assembly 900 is unlocked, the locked component can disengage from the predetermined position. The locked component includes at least one of the following: a rotary bearing assembly 300, a snap-fit ​​assembly 600, or an inflatable sealing assembly 800.

[0114] like Figure 7 As shown, the main body 320 of the rotating bearing assembly 300 has an extending base plate 321, and the locking assembly 900 is fixed to the base plate 321. Furthermore, the locking assembly 900 is located on the side of the main body 320 of the rotating bearing assembly 300. The rotating bearing assembly 300 is placed on an external base, thereby locking the rotating bearing assembly 300 to the external base by the locking assembly 900.

[0115] like Figure 17 As shown, the rotating hopper 400 has extended side plates 414 on both sides, which extend from the sides of the rotating hopper 400. Similarly, the snap-fit ​​assembly 600 has side plates 611 on both sides, and a locking assembly 900 is fixed to the side plates 611 of the snap-fit ​​assembly 600. The locking assembly 900 can lock the side plates 611 of the snap-fit ​​assembly 600 to the extended side plates 414 of the rotating hopper 400, thereby fixing the snap-fit ​​assembly 600 to the rotating hopper 400.

[0116] like Figure 23 As shown, the connecting flange 720 at the end of the transition hopper 700 has an end plate 721, which is located on the top of the transition hopper 700 and can be positioned on the side of the connecting flange 720 away from the rotating hopper 400. The air-sealing assembly 800 is provided with a top plate 811, which extends from the top surface of the air-sealing assembly 800 toward the side of the transition hopper 700. The locking assembly 900 is fixed to the top plate 811 of the air-sealing assembly 800, and the locking assembly 900 can lock the top plate 811 of the air-sealing assembly 800 and the end plate 721 of the transition hopper 700, thereby fixing the air-sealing assembly 800 and the transition hopper 700.

[0117] like Figure 29 and Figure 30 As shown, in some embodiments, the locking assembly 900 includes a stationary portion 910, which is configured to be fixedly connected to the locked member, for example, to the body portion 320 of the rotating bearing assembly 300, the snap fastener assembly 600, or the inflatable sealing assembly 800. During the locking operation of the locking assembly 900 on the locked member, the stationary portion 910 remains stationary.

[0118] Furthermore, the locking assembly 900 includes a moving part 920, which is configured to move relative to the stationary part 910 during the locking operation of the locking assembly on the locked member. A locking area is formed between the stationary part 910 and the moving part 920. During the relative movement between the moving part 920 and the stationary part 910, the space of the locking area changes. When the space of the locking area decreases, a part of the locked member is locked in the locking area; when the space of the locking area increases, a part of the locked member is unlocked in the locking area.

[0119] The stationary part 910 can be a square sleeve-shaped object capable of securely locking the locked component. The stationary part 910 is fixedly connected to the locked component; for example, the stationary part 910 can be fixedly connected to a base plate extending from the bottom of the main body 320, or it can be fixedly connected to a side of the main body 320. The moving part 920 can be an arc-shaped structure, including an extension 921 extending along the moving direction of the moving part 920 and protrusions 922 formed at both ends of the extension 921, wherein the lower protrusion 922 extends in a direction perpendicular to the extension 921. A locking area is formed between the lower end of the square sleeve and the lower protrusion 922 of the arc-shaped structure. During the relative movement of the square sleeve and the arc-shaped structure, the space of the locking area changes. When the space of the locking area decreases, a part of the locked component is locked within the locking area; when the space of the locking area increases, a part of the locked component is unlocked within the locking area.

[0120] In some embodiments, the locking assembly 900 includes a locking power unit 930, which is fixedly connected to the moving part 920 and threadedly connected to the stationary part 910. The locking power unit 930 is configured such that when it is driven to rotate by an external force, it rotates relative to the stationary part 910, thereby driving the moving part 920 to move. When the locking power unit 930 rotates, the moving part 920 and the stationary part 910 do not rotate.

[0121] In some embodiments, the stationary portion 910 is provided with an annular groove 911, and a pin 912 is provided within the annular groove 911. The annular groove 911 and the pin 912 restrict the movement of the locking power unit 930 in a predetermined direction. That is, the annular groove 911 and the pin 912 ensure that the locking power unit 930 can only drive the moving part 920 to move along the direction of its rotation axis, so that the moving part 920 moves closer to or away from the stationary portion 910 to achieve locking or disengagement of the locked member.

[0122] The locking power unit 930 includes a screw 931 and a transition structure 932. The transition structure 932 can be a square nut. The transition structure 932 is fixedly connected to the moving part 920. The engagement between the screw 931 and the transition structure 932 is configured such that when the screw 931 rotates, the transition structure 932 does not rotate, but moves along the axial direction of the screw 931 along with the displacement of the screw 931. A robotic arm can be connected to the locking power unit, thereby enabling remote operation of the robotic arm to lock or release the locked component. The locking assembly 900 of this application allows for remote and stable locking or unlocking of the locked component, thereby improving operational convenience.

[0123] 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.

[0124] 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 rotary switching device for spent fuel assemblies, used to rotate the spent fuel assembly before it is fed to a shearing device, characterized in that, include: 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; A rotating hopper, which is supported by a rotating bearing assembly, is used to support and drive the rotating hopper to rotate, so as to switch between a receiving station and a feeding station. The rotating hopper is used to contain the spent fuel assembly and simultaneously realize the reversal of the spent fuel assembly. The rotating 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; Also includes: A coupling, which connects the power input unit and the drive shaft, is used to compensate for radial and axial errors between the power input unit and the drive shaft; The coupling includes: The coupling body has one end of the drive shaft detachably connected to one end of the coupling body away from the power component, and the power input part is connected to the other end of the coupling body. A drive assembly connected to the coupling body for driving the coupling body to move axially along the transmission shaft, so that the transmission shaft is connected to or disconnected from the coupling body. The power unit is located outside the radioactive environment where the rotating load-bearing component and the rotating hopper are located.

2. The apparatus according to claim 1, characterized in that, The driving component includes: A support member is fixed to the rotating bearing assembly, and the support member is provided with a first limiting hole and a second limiting hole; A swinging member, one end of which is inserted into the first limiting hole or the second limiting hole; A connecting shaft is rotatably mounted on the support member, the connecting shaft is perpendicular to the transmission shaft, and the other end of the swing member is connected to the connecting shaft; A sliding member, one end of which is connected to the connecting shaft, and the other end of which is slidably connected to the coupling body; When the swinging member is positioned at the first limiting hole, the coupling body is connected to the drive shaft; when the swinging member is positioned at the second limiting hole, the drive shaft is disengaged from the coupling body. When the swinging member swings between the first limiting hole and the second limiting hole, it drives the connecting shaft and the sliding member to rotate around the axis of the connecting shaft. When the sliding member rotates, it drives the coupling body to move axially along the transmission shaft.

3. The apparatus according to claim 2, characterized in that, The coupling body is provided with a sliding groove, which is arranged along the circumferential direction of the coupling body. The sliding member is slidably connected within the sliding groove, and the sliding member surrounds a portion of the coupling body; When the swinging member swings between the first limiting hole and the second limiting hole and drives the sliding member to rotate, the sliding member slides in the sliding groove to drive the coupling body to move axially along the transmission shaft. When the drive shaft drives the coupling body and the power input part to rotate, the sliding member slides in the sliding groove so that the coupling body rotates relative to the sliding member.

4. The apparatus according to claim 1, characterized in that, The drive shaft includes: A solid shaft, which is connected to the power assembly; A hollow shaft, which connects the solid shaft to the rotating bearing assembly; The solid shaft is rotatably fitted within the fixing part, which is configured to penetrate the outer wall. The fixing part is used to install the solid shaft in the outer wall, which is used to isolate the power assembly from the radioactive environment.

5. The apparatus according to claim 4, characterized in that, The fixing part includes: A first fixing part is disposed within the outer wall; The second fixing part is detachably fixed inside the first fixing part and is sleeved on the outside of the solid shaft; A support portion is disposed between the second fixing portion and the solid shaft, and the support portion is configured to rotatably support the solid shaft within the second fixing portion.

6. The apparatus according to claim 1, characterized in that, The rotating bearing assembly is provided with a limiting part; The rotary hopper includes: A silo body for housing the spent fuel assembly; Mounting plates are fixed to both sides of the hopper body. The mounting plates cooperate with the limiting parts to limit the position of the hopper body on the rotating bearing assembly.

7. The apparatus according to claim 1, characterized in that, The rotating hopper is provided with a positioning port; the device also includes: A snap-fit ​​assembly is mounted on the rotating hopper and is configured to be inserted into the rotating hopper via the positioning port and cooperate with the spent fuel assembly to restrict the position of the spent fuel assembly within the rotating hopper when the rotating hopper rotates.

8. The apparatus according to claim 7, characterized in that, The snap-fit ​​assembly includes: A snap-fit ​​mounting part is installed on the rotating hopper. The snap-fit ​​mounting part has a receiving space inside. The bottom of the snap-fit ​​mounting part has an opening that corresponds to the position of the positioning port. A snap-fit ​​part is movably disposed within the receiving space and is matched with the spent fuel assembly; A snap-on drive unit is disposed on the snap-on mounting part and connected to the snap-on part. The snap-on drive unit is used to drive the snap-on part to move up and down. During the rotation of the rotary hopper, the snap-fit ​​part descends into the rotary hopper through the opening and positioning port and presses against the spent fuel assembly to limit the position of the spent fuel assembly; Once the rotating hopper has rotated to its designated position, the snap fastener rises into the receiving space of the snap fastener mounting part to release the restriction on the spent fuel assembly.

9. The apparatus according to claim 8, characterized in that, The drive unit is a cylinder; the rotary bearing assembly further includes: An air supply pipe is disposed within the main body of the rotating bearing assembly. The air inlet of the air supply pipe is disposed in the main body, and the air outlet of the air supply pipe is disposed in the bearing portion of the rotating bearing assembly. The air outlet is used to connect with the cylinder to supply gas to the cylinder.

10. The apparatus according to claim 1, characterized in that, Also includes: A transition hopper is fixedly disposed between the rotary hopper and the shearing device; wherein, after the rotary hopper rotates to the feeding station, it is connected to the transition hopper, and the transition hopper is used to connect the rotary hopper and the shearing device to push the spent fuel assembly to the shearing device.

11. The apparatus according to claim 10, characterized in that, Also includes: An inflatable sealing assembly is disposed at one end where the transition hopper connects to the rotating hopper; When the rotating hopper is connected to the transition hopper, the inflatable sealing assembly is inflated to seal the connection between the rotating hopper and the transition hopper. When the rotating hopper rotates, the air-sealing assembly deflates to provide space for the rotation of the rotating hopper.

12. The apparatus according to claim 10, characterized in that, Also includes: A positioning component is disposed on the transition hopper, and the positioning component is used to fix the position of the rotating hopper when the rotating hopper rotates into place.

13. The apparatus according to claim 12, characterized in that, The positioning component includes: The positioning and installation components are set on the transition silo; A positioning drive unit is mounted on the positioning mounting assembly; A positioning unit is connected to the positioning drive unit, which drives the positioning unit to move along the axial direction of the transition hopper. The rotating hopper has a positioning hole at its end. When the rotating hopper rotates to the correct position, the positioning drive unit drives the positioning unit to move and insert into the positioning hole.

14. The apparatus according to claim 13, characterized in that, The positioning and installation component includes: The positioning and fixing part is fixed on the transition hopper; A positioning power unit is rotatably disposed through the positioning fixing unit, and a positioning drive unit is movably disposed on the positioning power unit. The positioning power unit is configured to drive the positioning drive unit to move along the axial direction of the positioning power unit when it is driven to rotate by an external force.

15. The apparatus according to claim 10, characterized in that, Also includes: A support base is provided, with one end of the transition hopper supported on the support base. The support base is used to support the transition hopper and the rotating hopper. A limiting member is disposed on the support base and is used to limit the position of the rotating hopper.

16. The apparatus according to claim 15, characterized in that, Also includes: A limit detection component is provided on the support base, and the limit detection component is used to detect whether the rotating hopper has rotated into position.

17. The apparatus according to claim 1, characterized in that, Also includes: A locking assembly is configured to fix the locked components to predetermined positions. The locking assembly can be remotely controlled to lock and unlock. When the locking assembly is locked, the locked components are fixed in the predetermined positions; when the locking assembly is unlocked, the locked components can be disengaged from the predetermined positions. The locked component includes at least one of the following: the rotating bearing assembly, the snap fastener assembly, and the inflatable sealing assembly.

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