CN117809875A

CN117809875A - Rotary switching device of spent fuel assembly

Info

Publication number: CN117809875A
Application number: CN202311807488.4A
Authority: CN
Inventors: 董碧波; 高山; 张安琪; 高峰; 明玉周; 郑卫芳; 杨仲元; 周科源; 朱玲凡
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2023-12-26
Filing date: 2023-12-26
Publication date: 2024-04-02

Abstract

The embodiment of the invention relates to the technical field of spent fuel aftertreatment, and particularly discloses a rotary 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 rotation switching device includes: a power assembly; one end of the transmission shaft is connected with the power assembly, and the power assembly is used for driving the transmission shaft to rotate; the rotary bearing assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the rotary bearing assembly to rotate around an axis vertical to the transmission shaft; the rotary bin is borne by the rotary bearing assembly, the rotary bearing assembly is used for supporting and driving the rotary bin to rotate so as to switch between the material receiving station and the material feeding station, and the rotary bin is used for accommodating the spent fuel assembly. According to the embodiment of the invention, the rotary bearing component is arranged, so that the rotary feed bin can rotate in the horizontal direction, and the turning of the spent fuel component can be realized in the feeding process of the spent fuel component.

Description

Rotary switching device of spent fuel assembly

Technical Field

The embodiment of the invention relates to the technical field of spent fuel aftertreatment, in particular to a rotary switching device of a spent fuel assembly.

Background

Post-processing of spent fuel assemblies typically involves shearing of the spent fuel assembly, chemical dissolution of the fuel section, chemical separation, and tail end processing of uranium, plutonium. During the shearing process of the spent fuel assembly, the shearing system disintegrates the spent fuel assembly and provides a treatable spent fuel fragment feedstock for a subsequent dissolution process. Before shearing begins, the spent fuel assembly from the loading hot chamber needs to be delivered to a shearer system to effect shearing of the spent fuel assembly.

Disclosure of Invention

Embodiments of the present invention provide a rotational switching device for a spent fuel assembly for rotating the spent fuel assembly prior to feeding the spent fuel assembly to a shearing device. The rotation switching device includes: a power assembly; one end of the transmission shaft is connected with the power assembly, and the power assembly is used for driving the transmission shaft to rotate; the rotary bearing assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the rotary bearing assembly to rotate around an axis vertical to the transmission shaft; the rotary bin is borne by the rotary bearing assembly, the rotary bearing assembly is used for supporting and driving the rotary bin to rotate so as to switch between the material receiving station and the material feeding station, and the rotary bin is used for accommodating the spent fuel assembly.

According to the embodiment of the invention, the rotary bearing assembly is arranged, so that the rotary feed bin can rotate in the horizontal direction, the spent fuel assemblies fed into the rotary feed bin are turned around and commutated, the spent fuel assemblies in the rotary feed bin are rotated forward from the lower end head to the upper end head, and the spent fuel assemblies are conveyed into the shearing device in the forward direction of the upper end head, so that the requirement that the spent fuel assemblies need to be sheared sequentially according to the sequence of the upper end head, the fuel section and the lower end head is met.

Drawings

Other objects and advantages of the present invention will become apparent from the following description of embodiments of the present invention, which is to be read in connection with the accompanying drawings, and may assist in a comprehensive understanding of the present invention.

Fig. 1 is a schematic structural view of a rotary switching device according to an embodiment of the present invention.

Fig. 2 is a partial structural schematic diagram of a rotary switching device according to an embodiment of the present invention.

Fig. 3 is a schematic view of a power assembly and a propeller shaft according to one embodiment of the present invention.

Fig. 4 is an enlarged view of the power assembly of fig. 3.

Fig. 5 is a schematic structural view of a propeller shaft according to one embodiment of the present invention.

Fig. 6 is a cross-sectional view of a drive shaft according to one embodiment of the invention.

Fig. 7 is a schematic structural view of a rotary carrier assembly according to one embodiment of the invention.

FIG. 8 is a cross-sectional view of a rotary carrier assembly according to one embodiment of the invention.

Fig. 9 is a schematic diagram of a rotary switching device according to an embodiment of the present invention.

Fig. 10 is a schematic structural view of a coupling according to an embodiment of the present invention.

Fig. 11 is a schematic view of the coupling of fig. 10 from another perspective.

Fig. 12 is a schematic view of a coupling in a coupled state according to an embodiment of the present invention.

Fig. 13 is a schematic view of a coupling in a disconnected state according to one embodiment of the present invention.

Fig. 14 is a schematic view of a structure of a rotating silo according to an embodiment of the invention.

Fig. 15 is a schematic view of the rotary silo of fig. 14 from another perspective.

FIG. 16 is a schematic view of the mounting engagement of a rotating silo with a rotating carrier assembly in accordance with one embodiment of the invention.

Fig. 17 is an enlarged view at a in fig. 1.

Fig. 18 is a schematic structural view of a press-button assembly according to an embodiment of the present invention.

Fig. 19 is a schematic view of a structure of a press buckle assembly in a compressed state according to an embodiment of the present invention.

FIG. 20 is a schematic illustration of a press button assembly compressed against a spent fuel assembly according to one embodiment of the invention.

FIG. 21 is a schematic structural view of an inflatable seal assembly according to an embodiment of the present invention.

FIG. 22 is a schematic view of an installation process of an inflatable seal assembly according to an embodiment of the invention.

FIG. 23 is a schematic view of the installation of an inflatable seal assembly with a transition bin according to one embodiment of the invention.

Fig. 24 is an enlarged view of another view at B in fig. 1.

Fig. 25 is a schematic structural view of a positioning assembly according to an embodiment of the present invention.

Fig. 26 is a schematic view of a positioning assembly in a positioning state according to an embodiment of the present invention.

Fig. 27 is a schematic view of a positioning assembly in an open state according to one embodiment of the invention.

Fig. 28 is an enlarged view at C in fig. 2.

Fig. 29 is a schematic view of a structure of a locking assembly according to an embodiment of the present invention.

Fig. 30 is a cross-sectional view of a locking assembly according to one embodiment of the invention.

It should be noted that the drawings are not necessarily to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It will be apparent that the described embodiments are one embodiment of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without the benefit of the present disclosure, are intended to be within the scope of the present application based on the described embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which this application belongs. If, throughout, reference is made to "first," "second," etc., the description of "first," "second," etc., is used merely for distinguishing between similar objects and not for understanding as indicating or implying a relative importance, order, or implicitly indicating the number of technical features indicated, it being understood that the data of "first," "second," etc., may be interchanged where appropriate. Furthermore, for ease of description, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein merely to describe the spatial positional relationship of one device or feature to another device or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.

The inventor of the present invention has found that in conventional spent fuel shearing systems, the spent fuel assembly from the loading chamber enters the shearing device in a downward-head forward direction to be sheared. However, during the shearing process, the spent fuel assembly needs to be sheared sequentially in the order of the upper head, the fuel section, and the lower head. Therefore, the embodiment of the invention provides a rotary switching device which is used for rotating the spent fuel assembly before the spent fuel assembly is fed to a shearing device, so that the turning of the spent fuel assembly is realized.

As shown in fig. 1 and 2, the rotary switching device in this embodiment includes a power assembly 100, a transmission shaft 200, a rotary carrier assembly 300, and a rotary silo 400. One end of the transmission shaft 200 is connected to the power assembly 100, and the power assembly 100 is used for driving the transmission shaft 200 to rotate. The rotating bearing assembly 300 is in driving connection with the other end of the driving shaft 200, and the driving shaft 200 is used for driving the rotating bearing assembly 300 to rotate around an axis perpendicular to the driving shaft 200. The rotary bin 400 is carried on the rotary carrying assembly 300, the rotary carrying assembly 300 is used for supporting and driving the rotary bin 400 to rotate so as to switch between a material receiving station and a material feeding station, and the rotary bin 400 is used for accommodating the spent fuel assembly.

In the embodiment of the invention, the rotary bearing assembly 300 is arranged, so that the rotary feed bin 400 can rotate in the horizontal direction, the spent fuel assemblies fed into the rotary feed bin 400 are reversed, the spent fuel assemblies in the rotary feed bin 400 are rotated forward from the lower end head to the upper end head, and the upper end heads of the spent fuel assemblies are conveyed into the shearing device in the forward direction, so that the requirement that the spent fuel assemblies need to be sheared sequentially according to the sequence of the upper end heads, the fuel sections and the lower end heads is met.

In this embodiment, when the rotary silo 400 is at the material receiving station, the spent fuel assembly pushed by the upstream device can be received, and after the rotary silo 400 receives the spent fuel assembly, the rotary bearing assembly 300 drives the rotary silo 400 to rotate, so that the rotary silo 400 is switched to the material feeding station, and meanwhile, the reversing of the spent fuel assembly is realized. When the rotating silo 400 is in the feed station, spent fuel assemblies within the rotating silo 400 may be pushed into the shearing device.

As shown in fig. 3 and 4, in some embodiments, the power assembly 100 includes a driver 110 and a decelerator 120, the driver 110 is used to power the transmission shaft 200, the decelerator 120 is connected between the driver 110 and the transmission shaft 200, and the decelerator 120 is used to transmit the power of the driver 110 to the transmission shaft 200 while reducing the rotation speed so that the rotation speed of the transmission shaft 200 satisfies the requirement. In some embodiments, the drive 110 is a motor, such as a servo motor.

Further, a coupling 130 is connected between the driver 110 and the decelerator 120, and the coupling 130 can compensate for the offset between the output shaft of the driver 110 and the input shaft of the decelerator 120, and also has buffering and vibration damping effects. Illustratively, the coupling 130 in this embodiment may be an elastic coupling.

Because the rotary silo 400 is used for containing the spent fuel assembly and has radioactivity, the rotary bearing assembly 300 and the rotary silo 400 are arranged in the feeding hot chamber, so that the radioactive radiation of the spent fuel assembly is shielded, and a protective effect is achieved. In some embodiments, the power assembly 100 is disposed outside the radioactive environment where the rotary carrier 300 and the rotary bin 400 are located, for example, the power assembly 100 is disposed outside the feeding heat chamber, so as to prevent the power assembly 100 from being affected by radioactive radiation.

As shown in fig. 5 and 6, the transmission shaft 200 includes a solid shaft 210, a hollow shaft 220, and a fixing portion 230. The solid shaft 210 is connected with the power assembly 100, the hollow shaft 220 is connected between the solid shaft 210 and the rotary bearing assembly 300, the solid shaft 210 is rotatably sleeved in the fixing part 230, the fixing part 230 is arranged to penetrate through an outer wall, the fixing part 230 is used for installing the solid shaft 210 in the outer wall, and the outer wall is used for isolating the power assembly 100 from a radioactive environment. In this embodiment, the outer wall may be a wall of the feeding hot chamber, and the transmission shaft 200 penetrates through the outer wall, so as to transmit the power provided by the power assembly 100 outside the feeding hot chamber to the rotary bearing assembly 300 inside the feeding hot chamber.

The solid shaft 210 penetrates the outer wall, and the hollow shaft 220 is suspended between the outer wall and the rotary bearing assembly 300. In this embodiment, the portion penetrating the wall is set as the solid shaft 210, so that the strength and torsion resistance of the transmission shaft 200 can be increased, while the hollow shaft 220 is used in the suspended portion, so that the deflection generated by the gravity of the transmission shaft 200 can be reduced, and the levelness of the transmission shaft 200 can be effectively ensured. In addition, the solid shaft 210 and the hollow shaft 220 may be connected by welding.

In the present embodiment, the fixing portion 230 is wrapped around the solid shaft 210, so that the solid shaft 210 can rotatably penetrate through the outer wall. As shown in fig. 6, in some embodiments, the fixing part 230 includes a first fixing part 231, a second fixing part 232, and a supporting part 233. The first fixing portion 231 is disposed in the outer wall, the second fixing portion 232 is detachably fixed in the first fixing portion 231, and the second fixing portion 232 is sleeved outside the solid shaft 210. The support portion 233 is provided between the second fixing portion 232 and the solid shaft 210, and the support portion 233 is provided to rotatably support the solid shaft 210 in the second fixing portion 232.

In the present embodiment, the first fixing portion 231 and the second fixing portion 232 are wrapped around the solid shaft 210, so that not only can the solid shaft 210 be stably and rotatably supported in an external wall body, but also the transmission shaft 200 can be mounted and dismounted. During disassembly, the connection between the transmission shaft 200 and the rotary bearing assembly 300 is firstly 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 transmission shaft 200 are taken out from the external wall together, so that the disassembly of the transmission shaft 200 is realized.

Illustratively, the first fixing portion 231 is sleeved in the outer wall body, and the first fixing portion 231 and the second fixing portion 232 are detachably connected through fasteners, so that the first fixing portion 231 and the second fixing portion 232 are detached. The second fixing portion 232 and the solid shaft 210 may be connected by a fastener. For example, the first fixing portion 231 is a first sleeve, the second fixing portion 232 is a second sleeve, the supporting portion 233 is a bearing, and the fastening member is a bolt.

In disassembly, the connection between the transmission shaft 200 and the rotary carrier assembly 300 is firstly disconnected, then the bolts connected between the first fixing parts 231 and the second fixing parts 232 are removed, and then the sealing bags are connected at the end parts of the first fixing parts 231 so as to shield nuclear radiation in the feeding hot chamber. Finally, the second fixing portion 232 and the transmission shaft 200 are pulled out from the external wall body into the sealing bag together, so that the transmission shaft 200 is detached.

As shown in fig. 7 and 8, in some embodiments, the rotary carrier assembly 300 includes a carrier portion 310, a body portion 320, a power input portion 330, and a power output portion 340. The rotary bin 400 is carried on the carrying portion 310, and the carrying portion 310 is rotatably disposed on the body portion 320. The drive shaft 200 is connected to the power input 330, and the drive shaft 200 is configured to drive the power input 330 to rotate about a first axis, which is 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 carrier portion 310 to rotate around a second axis, where the first axis is perpendicular to the second axis.

Specifically, the rotation axis of the power input portion 330 is parallel to the direction of the bearing surface of the bearing portion 310 while being parallel to the axial direction of the transmission shaft 200, and then the rotation axis of the power output portion 340 is perpendicular to the direction of the bearing surface of the bearing portion 310 while being perpendicular to the axial direction of the transmission shaft 200. By providing the power input part 330 and the power output part 340, the torsional force input by the transmission shaft 200 is converted into the torsional moment in the other direction perpendicular to the torsional force, so that the rotation reversing function of the bearing part 310 can be realized, and the relative position and the connection mode of the rotation bearing assembly 300 and the power assembly 100 can be reasonably arranged.

In some embodiments, the magnitude of the torsional moment may be controlled by controlling the magnitude of the output power of power assembly 100. By controlling the angle at which the drive shaft 200 rotates, the angle at which the carrier 310 rotates can be controlled. For example, the bearing part 310 can be controlled to rotate 180 degrees, so that the rotating bin 400 borne by the bearing part 310 rotates 180 degrees in the horizontal direction, and the switching of the rotating bin 400 between the material receiving station and the material feeding station and the reversing of the spent fuel assemblies in the rotating bin 400 are realized.

In some embodiments, the power take-off 340 is fixedly connected to the carrier 310 such that the carrier 310 and the power take-off 340 are capable of synchronous rotation. The manner of fixedly connecting the power output portion 340 to the carrier portion 310 includes, but is not limited to, an interference fit, a keyed connection, etc.

As shown in fig. 7, the power input portion 330 is partially disposed outside the body portion 320, and the other portion is disposed inside the body portion 320. One end of the power input portion 330 extending out of the body portion 320 is connected to the transmission shaft 200, thereby providing power to the power input portion 330.

As shown in fig. 8, in some embodiments, the power input 330 is a worm and the power output 340 is a worm gear, with which the worm meshes. As shown in fig. 9, the power assembly 100 drives the transmission shaft 200 to rotate, the transmission shaft 200 drives the worm to rotate, and the worm rotates to drive the worm wheel to rotate, thereby driving the whole bearing part 310 to rotate. The worm and gear structure has higher precision, can accurately control the rotating angle, and has high reliability and difficult damage. In addition, the worm and gear structure has a deceleration function, that is, can prevent the carrier 310 from rotating excessively due to inertia, and can realize stable control of the rotation of the carrier 310.

Further, the transmission shaft 200 may drive the power input portion 330 and the power output portion 340 to rotate forward or reverse, so that the bearing portion 310 may rotate forward or reverse, so as to realize the switching of the rotary bin 400 between the receiving station and the feeding station.

As shown in fig. 7, in some embodiments, the bearing part 310 is provided with a plurality of hanging pieces 311, and the hanging pieces 311 are used for connection with external hanging equipment, thereby realizing the hanging and dismounting of the rotary bearing assembly 300. The body 320 may be a box structure, and a space for accommodating other components is provided in the body 320. For example, the power input portion 330 and the power output portion 340 may be provided inside the body portion 320.

As shown in fig. 8, in some embodiments, the rotary bearing assembly 300 further includes a supporting portion 350, where the supporting portion 350 is disposed between the bearing portion 310 and the body portion 320, such that the bearing portion 310 is rotatably supported on the supporting portion 350, and the supporting portion 350 can stably support the bearing portion 310. Alternatively, the support 350 may be a pivoting support capable of withstanding large axial and radial loads and overturning moments.

In some embodiments, the bearing portion 310 is sealingly connected to the body portion 320, and the bearing portion 310 can rotate relative to the body portion 320 and the connection is sealed to prevent contamination of structures within the body portion 320.

Further, as shown in fig. 7, the main body 320 is provided with an air inlet pipe 361, and the air inlet pipe 361 is used for conveying other air into the main body 320, so that the main body 320 can maintain positive pressure to the outside, thereby effectively preventing magazines such as external dust from entering the main body 320, and further ensuring the sealing between the bearing part 310 and the main body 320. For example, the intake duct 361 may be provided at a side surface of the body portion 320.

As shown in fig. 1 and 2, in some embodiments, the rotary switching device further includes a coupling 500, and the coupling 500 is connected between the power input 330 and the transmission shaft 200, for compensating for radial errors and axial errors between the power input 330 and the transmission shaft 200.

As shown in fig. 10, the coupling 500 in the present embodiment includes a coupling body 510 and a driving assembly. One end of the transmission shaft 200 remote from the power assembly 100 is detachably connected to one end of the coupling body 510, and the power input part 330 is connected to the other end of the coupling body 510. The driving assembly is connected to the coupling body 510, and is used for driving the coupling body 510 to move along the axial direction of the transmission shaft 200, so that the transmission shaft 200 is connected into the coupling body 510 or disconnected from the coupling body 510.

In this embodiment, the driving assembly is utilized to drive the coupling body 510 to move along the axial direction of the transmission shaft 200, so that the transmission shaft 200 can be quickly separated from the coupling body 510, thereby realizing quick disassembly between the transmission shaft 200 and the coupling 500, and facilitating disassembly of the transmission shaft 200 or rotation of the bearing assembly 300. In addition, the transmission shaft 200 can be inserted into the coupling body 510, and rapid installation between the transmission shaft 200 and the coupling 500 can be achieved. The present embodiment can achieve quick connection and disconnection between the transmission shaft 200 and the power input portion 330 of the rotation bearing assembly 300 by providing the coupling 500.

As shown in fig. 10 and 11, in some embodiments, the drive assembly includes a support 521, a swing member 522, a connection shaft 523, and a slider 524. The support 521 is fixed to the rotation bearing assembly 300, for example, the support 521 may be fixed to a side surface of the body portion 320. The supporting member 521 is provided with a first limiting hole 525 and a second limiting hole 526, and one end of the swinging member 522 is inserted into the first limiting hole 525 or the second limiting hole 526, and the other end of the swinging member 522 is connected with the connecting shaft 523. The connection shaft 523 is rotatably mounted to the support 521, and the connection shaft 523 is perpendicular to the transmission shaft 200. One end of the slider 524 is connected to the connection shaft 523, and the other end of the slider 524 is slidably connected to the coupling body 510.

Wherein, as shown in fig. 12, when the swinging member 522 is positioned in the first limiting hole 525, the coupling body 510 is connected with the transmission shaft 200; as shown in fig. 13, when the swing member 522 is positioned in the second limiting hole 526, the transmission shaft 200 is separated from the coupling body 510, and the disassembly of the transmission shaft 200 or the rotation bearing assembly 300 can be achieved. When the swinging member 522 swings between the first limiting hole 525 and the second limiting hole 526, the connecting shaft 523 and the sliding member 524 are driven to rotate around the axis of the connecting shaft 523, and the sliding member 524 drives the coupling body 510 to move along the axial direction of the transmission shaft 200 when rotating, so that the connection and disconnection between the transmission shaft 200 and the coupling body 510 are realized.

Further, a limiting block 527 is disposed on the supporting member 521, and the limiting block 527 is used for limiting the swing member 522 to swing between the first limiting hole 525 and the second limiting hole 526, so as to avoid excessive movement of the coupling body 510 caused by excessive swing of the swing member 522, and influence the transmission shaft 200 or the power input portion 330. Specifically, two stopper 527 are provided on the support 521 for restricting the swing angle of the swing member 522 so that the swing member 522 swings between the first stopper hole 525 and the second stopper hole 526.

In some embodiments, the swing member 522 may be remotely controlled to swing between the first and second stop holes 525 and 526, allowing for quick installation and removal of the coupling 500 from the drive shaft 200. Specifically, as shown in fig. 10, an end of the swinging member 522 away from the connection shaft 523 is provided with an operation portion 5221, and the operation portion 5221 facilitates remote operation of the manipulator, thereby achieving quick assembly and disassembly between the transmission shaft 200 and the swivel bearing assembly 300.

When the coupling 500 is in the working state, the swinging member 522 is inserted into the first limiting hole 525, so as to limit the position of the coupling body 510, and prevent the coupling body 510 from moving and disconnecting from the transmission shaft 200 during the operation of the rotary switching device. When the coupling is required to be disassembled, the manipulator can be operated to move the operation part 5221 upwards so as to pull the swinging member 522 out of the first positioning hole, release the limit of the coupling 500, and then can push the swinging member 522 to move to the second limit hole 526, thereby driving the coupling body 510 to move along the axial direction of the transmission shaft 200 so as to disconnect the transmission shaft 200 from the coupling body 510. Conversely, the swing member 522 is moved and inserted into the second positioning hole, so that the quick connection between the coupling 500 and the transmission shaft 200 can be achieved.

In some embodiments, the support 521 is provided with a coupling cylinder, and the coupling shaft 523 is rotatably disposed within the coupling cylinder such that the coupling shaft 523 can rotate relative to the support 521. A bearing is provided between the connection shaft 523 and the connection cylinder to support the rotation of the connection shaft 523 within the connection cylinder.

As shown in fig. 10, in some embodiments, the coupling body 510 is cylindrical, and an accommodating space for accommodating the driving shaft 200 and the power input part 330 is formed therein, the driving shaft 200 is inserted into the coupling body 510 from one end of the coupling body 510, and the power input part 330 is inserted into the coupling body 510 from the other end of the coupling body 510, thereby achieving a driving connection between the driving shaft 200 and the power input part 330.

Further, the inner surface of the coupling body 510 is provided with tooth-shaped portions 512, a plurality of teeth in the tooth-shaped portions 512 are arranged along the circumferential direction of the coupling body 510, and each tooth extends along the turning direction of the coupling body 510. The two ends of the coupling body 510 are provided with tooth-shaped parts 512, the ends of the transmission shaft 200 and the power input part 330 are provided with tooth-shaped matching parts meshed with the tooth-shaped parts 512, and the coupling body 510 is connected with the transmission shaft 200 and the power input part 330 through the meshing of the tooth-shaped parts 512 and the tooth-shaped matching parts. For example, the coupling body 510 is a crown gear sleeve.

When the coupling body 510 moves in the axial direction of the transmission shaft 200, the transmission shaft 200 may be inserted into the coupling body 510 and engaged with the tooth 512, thereby rotating the coupling body 510. Meanwhile, the power input part 330 is connected to the inside of the coupling body 510 and is engaged with the tooth-shaped part 512 at the other end of the coupling body 510, so that the power input part 330 is driven to rotate when the coupling body 510 rotates, thereby realizing power transmission.

As shown in fig. 10, in some embodiments, a sliding groove 511 is provided on the coupling body 510, and the sliding groove 511 is provided along the circumferential direction of the coupling body 510. The sliding member 524 is slidably connected in the sliding groove 511, and the sliding member 524 surrounds a portion of the coupling body 510. When the swinging 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 in the sliding groove 511 to offset the movement of the sliding member 524 along the radial direction of the transmission shaft 200, so as to drive the coupling body 510 to move along the axial direction of the transmission shaft 200; when the transmission shaft 200 rotates the coupling body 510 and the power input part 330, the slider 524 slides in the sliding groove 511 to rotate the coupling body 510 with respect to the slider 524.

In some embodiments, the swing member 522 is perpendicular to the connection shaft 523, and the connection shaft 523 is perpendicular to the transmission shaft 200, specifically, the connection shaft 523 is perpendicular to the bearing surface of the bearing portion 310. When one end of the swinging member 522 moves between the first limiting hole 525 and the second limiting hole, it moves circumferentially around the axis of the connecting shaft 523, and drives the connecting shaft 523 to rotate, and when the connecting shaft 523 rotates, drives the sliding member 524 connected with the swinging member 524 to move circumferentially around the axis of the connecting shaft 523, so that the end of the sliding member 524 slides in the sliding groove 511, and moves axially along the transmission shaft 200, and further drives the coupling body 510 to move axially along the transmission shaft 200, so as to avoid the sliding member 524 driving the coupling body 510 to move radially, thereby causing the coupling body 510 to be blocked and unable to move.

The sliding member 524 is exemplified by a fork structure including a link rod connected between the connection shaft 523 and a C-shaped member, which surrounds the coupling body 510, and an end of which is disposed in the sliding groove 511 and can slide in the sliding groove 511. Further, there is a space between the end of the C-shaped piece and the surface of the sliding groove 511, so that the C-shaped piece can smoothly slide in the sliding groove 511.

In some embodiments, a limiting portion is disposed on the rotary bearing assembly 300, and the limiting portion is used to fix the rotary bin 400, so as to prevent the rotary bin 400 from moving on the rotary bearing assembly 300. Specifically, the limiting portion is disposed on the bearing portion 310 to fix the rotating bin 400 to the bearing portion 310.

As shown in fig. 14 and 15, the rotary silo 400 includes a silo body 410 for accommodating the spent fuel assembly and a mounting plate 420 fixed to both sides of the silo body 410. As shown in fig. 16, the mounting plate 420 cooperates with the limiting portion to limit the position of the bin body 410 on the rotary carrier assembly 300.

As shown in fig. 7, in some embodiments, the limiting part includes a plurality of first limiting parts 312 and a plurality of second limiting parts 313, the plurality of first limiting parts 312 being disposed at both sides of the mounting plate 420 in the first direction for fixing the position of the rotating magazine 400 in the first direction; the plurality of second limiting portions 313 are disposed at both sides of the mounting plate 420 along the second direction, and are used for fixing the position of the rotating bin 400 in the second direction, so as to ensure that the rotating bin 400 keeps stable position relative to the bearing portion 310 when the bearing portion 310 rotates, and the rotating bin 400 synchronously rotates along with the bearing portion 310. The first direction is the extending direction of the rotary bin 400, and the second direction is perpendicular to the extending direction of the rotary bin 400.

Further, a groove 421 is provided on the mounting plate 420 at a position corresponding to the limit portion, and the limit portion is located in the groove 421, thereby limiting the position of the rotating bin 400.

In addition, the bin body 410 is further provided with a lifting member 411, and the lifting member 411 is used for being connected with external lifting equipment so as to lift and remotely disassemble the rotary bin. For example, the sling 411 may be a sling.

In some embodiments, the rotating bin 400 is carried on one side of the rotational axis of the carrying portion 310, and when the carrying portion 310 is rotated 180 degrees about its rotational axis, the rotating bin 400 is eccentrically rotated with respect to the center of the carrying portion 310, such that the rotating bin 400 is parallel to the original extension direction of the rotating bin 400 after eccentric rotation, thereby enabling the rotating bin 400 to interface with a receiving station or a feeding station.

As shown in fig. 14 and 15, in some embodiments, a locating port 412 is provided on the rotating bin 400. As shown in fig. 17, the rotary switching device further includes a pressing assembly 600, where the pressing assembly 600 is mounted on the rotary bin 400 and located at the positioning opening 412, and the pressing assembly 600 can rotate along with the rotary bin 400. The press buckle assembly 600 is configured to be inserted into the rotating silo 400 via the positioning opening 412 and cooperate with the spent fuel assembly to limit the position of the spent fuel assembly within the rotating silo 400 when the rotating silo 400 rotates, prevent the spent fuel assembly from sliding during rotation or during an earthquake, and also prevent the spent fuel assembly from being pulled back by a pushing grip used to push the spent fuel assembly.

As shown in fig. 18, in some embodiments, the press-button assembly 600 includes a press-button mounting portion 610, a press-button portion 630, and a press-button driving portion 620. The press buckle mounting portion 610 is mounted on the rotary bin 400, an accommodating space is formed in the press buckle mounting portion 610, an opening is formed in the bottom of the press buckle mounting portion 610, and the opening corresponds to the positioning opening 412. The pressing buckle portion 630 is movably disposed in the accommodating space, and the pressing buckle portion 630 is matched with the spent fuel assembly. The press button driving part 620 is disposed on the press button mounting part 610, the press button driving part 620 is connected to the press button part 630, and the press button driving part 620 is used for driving the press button part 630 to move.

As shown in fig. 19 and 20, when the rotating bin 400 rotates, the pressing buckle portion 630 descends into the rotating bin 400 through the opening and the positioning opening 412, and compresses the spent fuel assembly 40 to limit the spent fuel assembly 40, so as to prevent the spent fuel assembly 4 from displacement in the rotating process; after the rotary bin 400 rotates in place, for example, after the rotary bin 400 rotates to the feeding station, the pressing buckle portion 630 rises into the accommodating space of the pressing buckle installation portion 610 so as to release the limit of the spent fuel assembly, so that pushing of the spent fuel assembly in the rotary bin 400 is facilitated, and the spent fuel assembly is pushed into the shearing device.

As shown in fig. 19 and 20, in some embodiments, the pressing buckle portion 630 is a pressing plate, and is provided with a limiting groove 631, and the limiting groove 631 is matched with the spent fuel assembly 40, so that when the pressing buckle portion 630 descends into the rotary bin 400, the spent fuel assembly 40 can be pressed in the limiting groove 631, and sliding or shifting of the spent fuel assembly during rotation or earthquake is avoided, and safety is ensured.

As shown in fig. 18 and 19, in some embodiments, the press button driving part 620 is a cylinder, and the press button driving part 620 is provided with an air inlet pipe 621, and the air inlet pipe 621 is used to supply air to the cylinder. For example, the cylinder is provided with two air intake pipes 621, and the two air intake pipes 621 may be provided at both sides of the piston of the cylinder, respectively, to supply air to the cylinder from the two air intake pipes 621, and may be caused to output power from two opposite directions, thereby driving the pressing buckle part 630 to rise and fall.

As shown in fig. 8, the rotary bearing assembly 300 further includes a gas pipe 362, the gas pipe 362 is disposed in the body 320, a gas inlet 3621 of the gas pipe 362 is disposed in the body 320, the gas inlet 3621 is used for being connected to a gas source, a gas outlet 3622 of the gas pipe 362 is disposed on the bearing 310, and the gas outlet 3622 is used for being connected to a gas cylinder to convey gas for the gas cylinder. For example, the air inlet 3621 of the air delivery pipe 362 is provided at a side of the body portion 320, and the air outlet 3622 is provided at a rotation center of the carrier portion 310. Further, the air delivery pipe 362 is rotatably connected to the carrier 310 such that the outlet of the air delivery pipe 362 does not rotate when the carrier 310 rotates.

In this embodiment, the air pipe 362 is disposed in the body 320, so that when the bearing portion 310 and the rotating bin 400 and the pressing buckle assembly 600 borne by the bearing portion 310 rotate, the air pipe 362 does not rotate, and the connecting pipeline between the air pipe 362 and the air cylinder can do circular motion with the air outlet 3622 of the air pipe 362 as the center of a circle, the connecting pipeline between the air source and the air pipe 362 does not displace, so that the connecting pipeline is prevented from winding caused by moving when the pressing buckle assembly 600 rotates along with the rotating bin 400, and even the rotation of the rotating bin 400 is affected.

In some embodiments, the body part 320 is provided with two air delivery pipes 362 respectively connected with two air delivery pipes 621 of the cylinder to supply air to the cylinder from different directions to drive the pressing part 630 to rise and fall.

Further, the mounting plate 420 is provided with an avoidance groove 422, the position of the avoidance groove 422 corresponds to the air outlet 3622 of the air pipe 362, and the air outlet 3622 is located in the avoidance groove 422, so that the air pipe 362 does not rotate when the bearing part 310 and the rotating bin 400 rotate.

As shown in fig. 1, in some embodiments, the rotary switching device further comprises a transition bin 700, the transition bin 700 being fixedly disposed between the rotary bin 400 and the shearing device. The rotary bin 400 is communicated with the transition bin 700 after being rotated to the feeding station, and the transition bin 700 is used for connecting the rotary bin 400 and the shearing device so as to push the spent fuel assembly to the shearing device through the transition bin 700.

In some embodiments, the rotary carrier assembly 300 and the rotary bin 400 are disposed within a feed hot chamber, and the shearing device is disposed within a shear hot chamber with a wall disposed therebetween to shield nuclear radiation. To achieve the pushing of spent fuel assemblies into the shearing device in the rotating silo 400, the transition silo 700 is threaded into the outer wall.

As shown in fig. 1, the embedded part 710 is arranged outside the transition bin 700, the embedded part 710 is installed in an external wall body, the transition bin 700 is arranged in the embedded part 710 in a penetrating manner, and the embedded part 710 is used for fixing the transition bin 700 so as to avoid vibration and impact and ensure the stability of the transition bin 700. In some embodiments, the embedment 710 is provided with anchor bolts that are used to secure the embedment 710 to the wall.

As shown in fig. 17, in some embodiments, the rotary switching device further includes an inflatable sealing assembly 800, where the inflatable sealing assembly 800 is disposed at an end of the transition bin 700 connected to the rotary bin 400, and is used to seal the transition bin 700 to the rotary bin 400. Wherein, when the rotating bin 400 is communicated with the transition bin 700, the inflatable sealing assembly 800 is inflated to seal the junction of the rotating bin 400 and the transition bin 700; as the rotating silo 400 rotates, the inflatable seal assembly 800 deflates such that there is a space between the transition silo 700 and the rotating silo 400 to provide space for the rotation of the rotating silo 400.

As shown in fig. 21, the inflatable sealing assembly 800 includes a sealing installation portion 810 and an inflatable cushion 820, the sealing installation portion 810 is installed at the end portion of the transition bin 700, the inflatable cushion 820 is installed at the sealing installation portion 810, and the inflatable cushion 820 faces the rotary bin 400, the sealing installation portion 810 and the inflatable cushion 820 are both annular and are matched with the transition bin 700, the inflatable cushion 820 is formed with a channel 821, the channel 821 is matched with the spent fuel assembly, so that when the rotary bin 400 is in butt joint with the transition bin 700, the rotary bin 400 can be communicated with the transition bin 700, and the spent fuel assembly in the rotary bin 400 can be conveniently pushed to the transition bin 700 through the channel 821.

An inflation inlet 830 is provided on the seal mounting portion 810, the inflation inlet 830 being coupled to the inflatable cushion 820 for effecting inflation and deflation of the inflatable cushion 820. When the rotary bin 400 rotates to the feeding station, the rotary bin 400 is in butt joint with the transition bin 700, and at the moment, the inflatable cushion 820 is inflated through the inflation port 830 to fill the gap between the rotary bin 400 and the transition bin 700, so that the feeding channel between the rotary bin 400 and the transition bin 700 is ensured to be sealed, and dust is prevented from leaking. When the rotating bin 400 begins to rotate, the inflatable cushion 820 deflates back, providing room for the rotation of the rotating bin 400.

As shown in fig. 22 and 23, the end of the transition bin 700 is provided with a connection flange 720, the connection flange 720 is provided with a mounting groove, and the inflatable sealing assembly 800 is mounted in the mounting groove, so that the mounting and fixing of the inflatable sealing assembly 800 are realized. Furthermore, in some embodiments, the rotary switching device is provided with a locking assembly 900, the locking assembly 900 being used to secure the inflatable sealing assembly 800 to the end of the transition bin 700.

As shown in fig. 24, in some embodiments, the rotary switching device further includes a positioning assembly 1000, where the positioning assembly 1000 is disposed on the transition bin 700, and the positioning assembly 1000 is configured to fix the position of the rotary bin 400 when the rotary bin 400 rotates in place, so as to avoid displacement after the rotary bin 400 rotates in place.

As shown in fig. 25, in some embodiments, the positioning assembly 1000 includes a positioning mounting assembly 1010, a positioning drive 1020, and a positioning 1030. The positioning and mounting assembly 1010 is arranged on the transition bin 700, the positioning and driving part 1020 is arranged on the positioning and mounting assembly 1010, the positioning part 1030 is connected with the positioning and driving part 1020, and the positioning and driving part 1020 is used for driving the positioning part 1030 to move along the extending direction of the transition bin 700.

As shown in fig. 26, in which the end of the rotating bin 400 is provided with a positioning hole 415, when the rotating bin 400 rotates in place, the positioning driving part 1020 drives the positioning part 1030 to move and insert into the positioning hole 415, so that the positioning assembly 1000 is in a positioning state, thereby realizing the positioning of the rotating bin 400. As shown in fig. 27, when the positioning portion 1030 is removed from the positioning hole 415, the positioning assembly 1000 is in an open state, thereby unlocking the positioning of the rotating magazine 400, facilitating the rotation of the rotating magazine 400.

Illustratively, the positioning driving part 1020 is a cylinder provided with an intake duct 1021 for supplying air to the cylinder. The positioning part 1030 is a positioning pin, and the cylinder may drive the positioning pin to move along the extending direction of the transition bin 700, so that the positioning pin is inserted into the positioning hole 415 of the rotating bin 400 or removed from the positioning hole 415, to thereby position and rotate the rotating bin 400.

In some embodiments, positioning holes 415 are formed at two ends of the rotary bin 400, and the positioning holes 415 and the positioning pins are aligned with the rotation center of the rotary bin 400, so that when the rotary bin 400 rotates to the material receiving station and the material feeding station, the positioning pins can be inserted into the positioning holes 415 at the end of the rotary bin 400, so that the rotary bin 400 can be positioned at the material receiving station and the material feeding station.

In some embodiments, the positioning portion 1030 is provided with a limit baffle 1031, one end of the positioning driving portion 1020, which is close to the rotating bin 400, is connected with a limit matching portion 1024, and when the positioning driving portion 1020 drives the positioning portion 1030 to move towards the rotating bin 400, the limit baffle 1031 is matched with the limit matching portion 1024, so as to avoid excessive movement of the positioning portion 1030.

As shown in fig. 25, in some embodiments, the positioning and mounting assembly 1010 includes a positioning fixing portion 1011 and a positioning power portion 1012, the positioning fixing portion 1011 is fixed on the transition bin 700, the positioning power portion 1012 rotatably penetrates through the positioning fixing portion 1011, the positioning driving portion 1020 is movably disposed on the positioning power portion 1012, and the positioning power portion 1012 is configured to drive the positioning driving portion 1020 to move along the axial direction of the positioning power portion 1012 when driven to rotate by an external force, so that the positioning portion 1030 is ensured to be separated from the ends of the rotating bin 400 and the transition bin 700, and the positioning driving portion 1020 is conveniently lifted upwards to achieve disassembly.

Illustratively, the outer surface of the positioning power portion 1012 is provided with threads, the positioning driving portion 1020 is provided with a threaded hole, the threaded hole is matched with the threads of the positioning power portion 1012, and when the positioning power portion 1012 is driven to rotate by external force, the positioning driving portion 1020 can be driven to move along the axial direction of the positioning power portion 1012. For example, the positioning power unit 1012 is a screw.

In addition, the positioning driving part 1020 is provided with guide parts 1022, and the guide parts 1022 are positioned at both ends of the positioning power part 1012, so that when the positioning power part 1012 rotates, the positioning driving part 1020 is ensured to move along the axial direction of the positioning power part 1012 without rotating.

In some embodiments, an operation hand wheel 1013 is disposed at an end of the positioning power portion 1012 away from the positioning driving portion 1020, so as to facilitate the clamping of the manipulator for remote operation. The lifting part 1023 is arranged on the positioning driving part 1020, and the lifting part 1023 is T-shaped, so that external tools such as a manipulator can be conveniently and remotely clamped, and the positioning driving part 1020 can be remotely disassembled and assembled.

As shown in fig. 1 and 2, in some embodiments, the rotary switching device further includes a support base 10 and a stopper 20. One end of the transition bin 700 is supported on a support base 10, and the support base 10 is used for supporting the transition bin 700 and the rotary bin 400. As shown in fig. 28, the limiting member 20 is disposed on the supporting seat 10, and the limiting member 20 is used for limiting the position of the rotating bin 400, so as to avoid excessive rotation of the rotating bin 400. In this embodiment, after the rotary bin 400 rotates in place, the side surface of the rotary bin 400 touches the limiting member 20, and the limiting member 20 can physically block the rotary bin 400 to avoid excessive rotation of the rotary bin 400.

As shown in fig. 28, in some embodiments, the rotary switching device further includes a limit detection member 30, where the limit detection member 30 is disposed on the support base 10, and the limit member 20 is used to detect whether the rotary bin 400 rotates in place. After the rotary bin 400 rotates in place, the side surface of the rotary bin 400 is contacted with the limit detection piece 30, so that the limit detection piece 30 is triggered to send out an in-place signal, and the rotary bin 400 is controlled to stop rotating according to the in-place signal, so that excessive rotation is avoided. The limit detection member is, for example, a valve switch.

As shown in fig. 14 and 28, the side of the rotating magazine 400 is provided with stoppers 413, and the number of stoppers 413 may be two, which correspond to the positions of the stopper 20 and the stopper detector 30, respectively. When the rotating bin 400 rotates in place, the two stoppers 413 respectively touch the stopper 20 and the stopper detector 30 to stop the rotation of the rotating bin 400 in both physical and electrical signal control aspects, thereby avoiding excessive rotation thereof.

In some embodiments, the rotary switching device further includes a locking assembly 900, the locking assembly 900 being configured to fix the locked members at predetermined positions, respectively, the locking assembly 900 being capable of being remotely controlled to be locked and unlocked. When the locking assembly 900 is locked, the locked member is fixed at a predetermined position; when the locking assembly 900 is unlocked, the locked member can be disengaged from the predetermined position. Wherein, the locked piece at least comprises one of the following: a rotary carrier assembly 300, a press button assembly 600, and an inflatable seal assembly 800.

As shown in fig. 7, the body portion 320 of the rotary carrier 300 has a base 321 extending therefrom, and the locking assembly 900 is fixed to the base 321. Furthermore, it is possible to provide a device for the treatment of a disease. The locking assembly 900 is located on the side of the body portion 320 of the swivel bearing assembly 300. The rotating carrier assembly 300 is placed on the external base such that the rotating carrier assembly 300 is locked to the external base by the locking assembly 900.

As shown in fig. 17, the rotating magazine 400 is provided with extension side plates 414 at both sides, and the extension side plates 414 extend from the side surfaces of the rotating magazine 400. The side plates 611 are also disposed on two sides of the pressing buckle assembly 600, the locking assembly 900 is fixed on the side plates 611 of the pressing buckle assembly 600, and the locking assembly 900 can lock the side plates 611 of the pressing buckle assembly 600 and the extending side plates 414 of the rotating bin 400, so as to fix the pressing buckle assembly 600 on the rotating bin 400.

As shown in fig. 23, the connecting flange 720 at the end of the transition bin 700 has an end plate 721, and the end plate 721 is disposed at the top of the transition bin 700, and may be located at a side of the connecting flange 720 remote from the rotating bin 400. The inflatable seal assembly 800 is provided with a top plate 811, the top plate 811 extending from the top surface of the inflatable seal assembly 800 to a side facing the transition bin 700. The locking assembly 900 is secured to the top plate 811 of the inflatable seal assembly 800, and the locking assembly 900 can lock the top plate 811 of the inflatable seal assembly 800 and the end plate 721 of the transition bin 700 to secure the inflatable seal assembly 800 to the transition bin 700.

As shown in fig. 29 and 30, in some embodiments, the locking assembly 900 includes a stationary portion 910, the stationary portion 910 being configured to be fixedly coupled to a locked member, such as the body portion 320 of the swivel bearing assembly 300, the press-button assembly 600, or the inflatable seal assembly 800, and the stationary portion 910 remaining stationary during a locking operation of the locked member by the locking assembly 900.

Further, the locking assembly 900 includes a moving part 920, where the moving part 920 is configured to relatively move with respect to the stationary part 910 during a locking operation of the locked member by the locking assembly, a locking area is formed between the stationary part 910 and the moving part 920, and a space of the locking area is changed during a relative movement of the moving part 920 and the stationary part 910, and when the space of the locking area is reduced, a part of the locked member is locked in the locking area; when the space of the locking area becomes large, a portion of the locked member is unlocked in the locking area.

The stationary portion 910 may be a square sleeve that can securely lock the locked member. The stationary portion 910 is fixedly connected to the locked member, for example, the stationary portion 910 may be fixedly connected to a bottom plate extending from the bottom of the body portion 320, or may be fixedly connected to a side surface of the body portion 320. The moving part 920 may be an arcuate structure including an extending part 921 extending along a moving direction of the moving part 920 and protruding parts 922 formed at both ends of the extending part 921, wherein the protruding part 922 of the lower end extends in a direction perpendicular to the extending part 921. A locking area is formed between the lower end of the square sleeve and the convex part 922 at the lower end of the arch-shaped structure, the space of the locking area is changed in the process of the relative movement of the square sleeve and the arch-shaped structure, and when the space of the locking area is reduced, a part of the locked piece is locked in the locking area; when the space of the locking area becomes large, a portion of the locked member is unlocked in the locking area.

In some embodiments, the locking assembly 900 includes a locking power portion 930, the locking power portion 930 being fixedly coupled to the moving portion 920 and being threadably coupled to the stationary portion 910. The locking power part 930 is configured to rotate relative to the stationary part 910 when driven by an external force, and to drive the moving part 920 to move. When the locking power part 930 rotates, the moving part 920 does not rotate with the stationary part 910.

In some embodiments, the stationary portion 910 is provided with an annular groove 911, and a pin 912 is provided in the annular groove 911, and the annular groove 911 and the pin 912 restrict movement of the locking power portion 930 in a predetermined direction. That is, the annular groove 911 and the pin 912 enable the locking power portion 930 to move only along the direction of the rotation axis along which the moving portion 920 rotates, so that the moving portion 920 approaches or separates from the stationary portion 910 to achieve locking or disengagement of the locked member.

The locking power portion 930 includes a screw 931 and a transition structure 932, the transition structure 932 may be a square nut, the transition structure 932 is fixedly connected with the moving portion 920, and the cooperation between the screw 931 and the transition structure 932 is that: the transition structure 932 does not rotate when the screw 931 rotates, and the transition structure 932 moves along the axial direction of the screw 931 with displacement of the screw 931. The manipulator can be connected with the locking power part, so that the locked piece can be locked or separated through the operation of the remote manipulator. The locking assembly 900 can remotely and stably lock or unlock the locked piece, thereby improving the convenience of operation.

It should also be noted that, in the embodiments of the present invention, the features of the embodiments of the present invention and the features of the embodiments of the present invention may be combined with each other to obtain new embodiments without conflict.

The present invention is not limited to the above embodiments, but the scope of the invention is defined by the claims.

Claims

1. A rotational switching device for a spent fuel assembly for rotating the spent fuel assembly prior to feeding the spent fuel assembly to a shearing device, comprising:

a power assembly;

one end of the transmission shaft is connected with the power assembly, and the power assembly is used for driving the transmission shaft to rotate;

the rotary bearing assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the rotary bearing assembly to rotate around an axis perpendicular to the transmission shaft;

the rotary feed bin is borne by the rotary bearing assembly, the rotary bearing assembly is used for supporting and driving the rotary feed bin to rotate so as to switch between a material receiving station and a material feeding station, and the rotary feed bin is used for accommodating the spent fuel assembly.

2. The apparatus of claim 1, wherein the rotating carrier assembly comprises:

the rotary bin is supported on the bearing part;

the bearing part is rotatably arranged on the body part;

the power input part is connected with the transmission shaft, and the transmission shaft is used for driving the power input part to rotate around a first axis; the first axis is parallel to the axis of the transmission shaft;

the power output part is arranged to drive the power output part to rotate, the power output part drives the bearing part to rotate around a second axis, and the first axis is perpendicular to the second axis.

3. The apparatus as recited in claim 2, further comprising:

the coupling is connected between the power input part and the transmission shaft and is used for compensating radial errors and axial errors between the power input part and the transmission shaft.

4. A device according to claim 3, wherein the coupling comprises:

the power transmission device comprises a coupling body, wherein one end of the transmission shaft, which is far away from the power assembly, is detachably connected with one end of the coupling body, and the power input part is connected with the other end of the coupling body;

The driving assembly is connected with the coupler body and is used for driving the coupler body to move along the axial direction of the transmission shaft so that the transmission shaft is connected into or separated from the coupler body.

5. The apparatus of claim 4, wherein the drive assembly comprises:

the support piece is fixed on the rotary bearing assembly and is provided with a first limiting hole and a second limiting hole;

the swinging piece is inserted into the first limit hole or the second limit hole at one end;

the connecting shaft is rotatably arranged on the supporting piece and is perpendicular to the transmission shaft, and the other end of the swinging piece is connected with the connecting shaft;

one end of the sliding piece is connected with the connecting shaft, and the other end of the sliding piece is slidably connected with the coupler body;

when the swinging piece is positioned in the first limiting hole, the coupler body is connected with the transmission shaft; when the swinging piece is positioned in the second limiting hole, the transmission shaft is separated from the coupler body;

When the swinging piece swings between the first limiting hole and the second limiting hole, the connecting shaft and the sliding piece are driven to rotate around the axis of the connecting shaft, and when the sliding piece rotates, the coupling body is driven to axially move along the transmission shaft.

6. The device according to claim 5, wherein the coupling body is provided with a sliding groove, the sliding groove being provided along a circumferential direction of the coupling body;

the sliding piece is slidably connected in the sliding groove, and surrounds part of the coupling body;

when the swinging piece swings between the first limiting hole and the second limiting hole and drives the sliding piece to rotate, the sliding piece slides in the sliding groove so as to drive the coupler body to move along the axial direction of the transmission shaft;

when the transmission shaft drives the coupling body and the power input part to rotate, the sliding piece slides in the sliding groove, so that the coupling body rotates relative to the sliding piece.

7. The apparatus of claim 1, wherein the power assembly is disposed outside of the rotating carrier assembly and the radioactive environment in which the rotating silo is located; the drive shaft includes:

A solid shaft connected with the power assembly;

the hollow shaft is connected between the solid shaft and the rotary bearing assembly;

the solid shaft is rotatably sleeved in the fixing part, the fixing part is arranged to penetrate through an outer wall body, the fixing part is used for installing the solid shaft in the outer wall body, and the outer wall body is used for isolating the power assembly from the radioactive environment.

8. The apparatus of claim 7, wherein the securing portion comprises:

the first fixing part is arranged in the outer wall body;

the second fixing part is detachably fixed in the first fixing part, and is sleeved outside the solid shaft;

and a support portion provided between the second fixing portion and the solid shaft, the support portion being provided to rotatably support the solid shaft in the second fixing portion.

9. The device according to claim 2, wherein the rotary bearing assembly is provided with a limit part;

the rotary silo includes:

the feed bin body is used for accommodating the spent fuel assembly;

The mounting plate, the mounting plate is fixed in the both sides of feed bin body, the mounting plate with spacing portion cooperatees, is used for the restriction the feed bin body is in the position on the rotatory bearing assembly.

10. The device according to claim 1, wherein a positioning opening is arranged on the rotary bin; the apparatus further comprises:

the pressing buckle assembly is installed on the rotary feed bin, is arranged to be inserted into the rotary feed bin through the positioning opening and matched with the spent fuel assembly, and is used for limiting the position of the spent fuel assembly in the rotary feed bin when the rotary feed bin rotates.

11. The apparatus of claim 10, wherein the press-on assembly comprises:

the pressing buckle installation part is installed on the rotary bin, an accommodating space is formed in the pressing buckle installation part, an opening is formed in the bottom of the pressing buckle installation part, and the opening corresponds to the positioning opening in position;

the pressing and buckling part is movably arranged in the accommodating space and matched with the spent fuel assembly;

the pressing buckle driving part is arranged on the pressing buckle installation part and is connected with the pressing buckle part, and the pressing buckle driving part is used for driving the pressing buckle part to lift;

When the rotary feed bin rotates, the pressing buckle part descends into the rotary feed bin through the opening and the positioning opening and compresses the spent fuel assembly so as to limit the spent fuel assembly;

after the rotary bin rotates in place, the pressing buckle part rises into the accommodating space of the pressing buckle installation part so as to release the limit of the spent fuel assembly.

12. The apparatus of claim 11, wherein the drive is a cylinder; the rotary carrier assembly further comprises:

the gas transmission pipe is arranged in the body part of the rotary bearing assembly, the gas inlet of the gas transmission pipe is arranged in the body part, the gas outlet of the gas transmission pipe is arranged in the bearing part of the rotary bearing assembly, and the gas outlet is used for being connected with the cylinder so as to convey gas for the cylinder.

13. The apparatus as recited in claim 1, further comprising:

the transition bin is fixedly arranged between the rotary bin and the shearing device; the rotary feed bin is communicated with the transition feed bin after rotating to the feeding station, and the transition feed bin is used for connecting the rotary feed bin and the shearing device so as to push the spent fuel assembly to the shearing device.

14. The apparatus as recited in claim 13, further comprising:

the inflatable sealing assembly is arranged at one end of the transition bin, which is connected with the rotary bin;

when the rotary bin is communicated with the transition bin, the inflatable sealing assembly is inflated to seal the joint of the rotary bin and the transition bin;

when the rotating bin rotates, the inflatable seal assembly deflates to provide space for rotation of the rotating bin.

15. The apparatus as recited in claim 13, further comprising: the positioning assembly is arranged on the transition bin and is used for fixing the position of the rotary bin when the rotary bin rotates in place.

16. The apparatus of claim 15, wherein the positioning assembly comprises:

the positioning and mounting assembly is arranged on the transition bin;

a positioning driving part which is arranged on the positioning installation assembly;

the positioning part is connected with the positioning driving part and is used for driving the positioning part to move along the axial direction of the transition bin;

the end part of the rotary bin is provided with a positioning hole, and after the rotary bin rotates in place, the positioning driving part drives the positioning part to move and insert into the positioning hole.

17. The apparatus of claim 16, wherein the positioning and mounting assembly comprises:

the positioning and fixing part is fixed on the transition bin;

the positioning power part is rotatably arranged on the positioning fixing part in a penetrating manner, the positioning driving part is movably arranged on the positioning power part, and the positioning power part is arranged to drive the positioning driving part to axially move along the positioning power part when being driven to rotate by external force.

18. The apparatus as recited in claim 13, further comprising:

the support seat is used for supporting the transition bin and the rotary bin;

the limiting piece is arranged on the supporting seat and used for limiting the position of the rotary bin.

19. The apparatus as recited in claim 18, further comprising:

the limit detection piece is arranged on the supporting seat and is used for detecting whether the rotary bin rotates in place.

20. The apparatus as recited in claim 1, further comprising:

the locking assembly is arranged to fix the locked pieces at preset positions respectively, can be locked and unlocked by remote control, and is fixed at preset positions when being locked; when the locking assembly is unlocked, the locked piece can be separated from a preset position;

Wherein, the locked piece at least comprises one of the following: the rotary bearing assembly, the pressing buckle assembly and the inflatable sealing assembly.