CN117842669A - Pushing device of spent fuel assembly - Google Patents

Abstract

The embodiment of the invention relates to the technical field of spent fuel aftertreatment, and particularly discloses a pushing device of a spent fuel assembly, which is used for pushing the spent fuel assembly to a shearing device. The pushing device comprises: 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 chain assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the chain assembly to reciprocate; the pushing bin is used for being connected with an external rotating bin, and the rotating bin is used for accommodating the spent fuel assembly; the pushing assembly is arranged in the pushing bin and connected with the chain assembly, and the chain assembly is used for driving the pushing assembly to move in the pushing bin and the rotating bin so as to push the spent fuel assembly in the rotating bin to move to the shearing device.

Description

Pushing 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 pushing 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

The embodiment of the invention provides a pushing device of a spent fuel assembly, which is used for pushing the spent fuel assembly to a shearing device. The pushing device comprises: 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 chain assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the chain assembly to reciprocate; the pushing bin is used for being connected with an external rotating bin, and the rotating bin is used for accommodating the spent fuel assembly; the pushing assembly is arranged in the pushing bin and connected with the chain assembly, and the chain assembly is used for driving the pushing assembly to move in the pushing bin and the rotating bin so as to push the spent fuel assembly in the rotating bin to move to the shearing device.

According to the embodiment of the invention, the power assembly drives the chain assembly to move in the pushing bin and the rotating bin so as to drive the pushing assembly to move, so that the spent fuel assembly in the rotating bin is pushed to move, the spent fuel assembly can move to the shearing device, and the pushing of the spent fuel assembly is realized. The chain assembly can realize stepping movement, and the pushing distance of the spent fuel assembly can be accurately controlled by controlling the moving distance of the chain assembly, so that the spent fuel assembly can enter the shearing device with a preset length, and is convenient to be sheared into small short sections with the preset length.

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 pushing device according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a power assembly and a propeller shaft according to one embodiment of the present invention.

Fig. 3 is an enlarged view of the power assembly of fig. 2.

Fig. 4 is a schematic structural view of a propeller shaft according to one embodiment of the present invention.

Fig. 5 is a cross-sectional view of a drive shaft according to one embodiment of the invention.

Fig. 6 is a schematic diagram of the drive shaft, chain assembly and pushing assembly according to one embodiment of the invention.

Fig. 7 is a schematic structural view of a pushing assembly according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of a chain according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of a chain assembly according to one embodiment of the present invention.

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

FIG. 11 is a half cross-sectional view of an inner chain case according to one embodiment of the present invention.

Fig. 12 is a schematic view of the inner chain case of fig. 11 from another perspective.

Fig. 13 is a schematic structural view of an outer chain case and a supporting seat according to an embodiment of the present invention.

Fig. 14 is a schematic structural view of a push connection part according to an embodiment of the present invention.

Fig. 15 is a schematic structural view of a pushing portion according to an embodiment of the present invention.

Fig. 16 is a schematic diagram of a pushing device according to an embodiment of the present invention.

Fig. 17 is a schematic view of a coupling according to an embodiment of the present invention.

Fig. 18 is a schematic view of the coupling of fig. 17 from another perspective.

Fig. 19 is a schematic view showing a structure in which a coupling is in a coupled state according to an embodiment of the present invention.

Fig. 20 is a schematic view of a coupling in a disconnected state according to one embodiment of the present invention.

Fig. 21 is a schematic structural view of an air intake assembly according to an embodiment of the present invention.

Fig. 22 is a cross-sectional view of the intake assembly of fig. 21.

FIG. 23 is a schematic structural view of an inflatable seal assembly according to an embodiment of the present invention.

FIG. 24 is a schematic view of the installation of an inflatable seal assembly with a pushing ram according to one embodiment of the invention.

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

Fig. 26 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. If "and/or" is present throughout, it is meant to include three side-by-side schemes, for example, "A and/or B" including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. 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 is sheared into small short segments of a predetermined length so as to be able to better dissolve the fuel core in the spent fuel assembly cladding, requiring fine control of the pushing distance of the spent fuel assembly. To this end, an embodiment of the present invention provides a pushing device for a spent fuel assembly, so as to push the spent fuel assembly into a shearing device for shearing.

As shown in fig. 1, the pushing device of the spent fuel assembly in the embodiment of the invention comprises a power assembly 100, a transmission shaft 200, a chain assembly, a pushing bin 400 and a pushing assembly. 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 chain assembly is in driving connection with the other end of the driving shaft 200, and the driving shaft 200 is used for driving the chain assembly to reciprocate. The pushing bin 400 is used to connect with an external rotating bin for containing spent fuel assemblies. The pushing component is arranged in the pushing bin 400 and is connected with the chain component, and the chain component is used for driving the pushing component to move in the pushing bin 400 and the rotating bin so as to push the spent fuel component in the rotating bin to move to the shearing device.

According to the embodiment of the invention, the pushing bin 400 is arranged, so that the pushing bin 400 can be in butt joint with the rotating bin, and a feeding channel of the spent fuel assembly is closed, so that dust is prevented from escaping. The chain assembly is driven to move in the pushing bin 400 and the rotating bin through the power assembly 100 so as to drive the pushing assembly to move, thereby pushing the spent fuel assembly in the rotating bin to move, enabling the spent fuel assembly to move to the shearing device, and pushing the spent fuel assembly. The chain assembly can realize stepping movement, and the pushing distance of the spent fuel assembly can be accurately controlled by controlling the moving distance of the chain assembly, so that the spent fuel assembly can enter the shearing device with a preset length, and is convenient to be sheared into small short sections with the preset length.

As shown in fig. 2 and 3, 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 chain component and the pushing component are used for pushing the spent fuel component, the chain component and the pushing component are radioactive, and the pushing bin 400, the chain component and the pushing component are arranged in the feeding hot chamber, so that radioactive radiation of the spent fuel component is shielded, and a protective effect is achieved. In some embodiments, the power assembly 100 is disposed outside the radioactive environment where the pushing bin 400, the chain assembly, and the pushing assembly are located, e.g., the power assembly 100 is disposed outside the feeding hot room, so as to avoid that the power assembly 100 is exposed to radioactive radiation to affect normal operation.

As shown in fig. 4 and 5, 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 chain 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 body, the fixing part 230 is used for installing the solid shaft 210 in the outer wall body, and the outer wall body 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 chain assembly inside the feeding hot chamber.

Wherein the solid shaft 210 extends through the outer wall and the hollow shaft 220 is suspended between the outer wall and the chain assembly. 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. 5, 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 chain assembly 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 transmission shaft 200 is disconnected from the chain assembly first, then the bolts connected between the first fixing portion 231 and the second fixing portion 232 are removed, and then the sealing bag is connected to the end of the first fixing portion 231 to shield nuclear radiation in the feeding heat 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. 6 and 7, in some embodiments, chain assembly 300 includes sprocket 310 and chain 320. The sprocket 310 is disposed in the pushing bin 400, the sprocket 310 is connected with the transmission shaft 200, and the transmission shaft 200 is used for driving the sprocket 310 to rotate. The chain 320 is connected with the pushing component 600, and the chain 320 is matched with the chain wheel 310, and the chain wheel 310 rotates to drive the chain 320 to move, so that the pushing component 600 is driven to move, and the pushing component 600 can push the spent fuel component to move, so that the pushing of the spent fuel component is realized.

In some embodiments, sprocket 310 includes sprocket shaft 311 and sprocket body 312. The sprocket shaft 311 is connected to a drive shaft 200, and the drive shaft 200 is used to drive the sprocket shaft 311 to rotate. The sprocket body 312 is sleeved outside the sprocket shaft 311, the sprocket shaft 311 is used for driving the sprocket body 312 to rotate, the sprocket body 312 is matched with the chain 320, and the sprocket body 312 rotates to drive the chain 320 to move.

As shown in fig. 8, in some embodiments, the chain 320 includes a plurality of first link plates 321, a plurality of second link plates 322, and a plurality of pin shafts 323. The first link plates 321 are engaged with each other, the second link plates 322 are engaged with each other, and the first link plates 321 and the second link plates 322 are fixedly connected by pin shafts 323. The chain 320 in this embodiment includes a plurality of link plates that cooperate with each other to control movement of the chain 320 in units of a length of one link plate. In some embodiments, the chain 320 can be driven to turn by controlling the link plates in the chain 320. In some embodiments, the plurality of first link plates 321 are symmetrically disposed at both ends of the pin 323, and the plurality of second link plates 322 are symmetrically disposed at both ends of the pin 323.

In some embodiments, the first link plate 321 is disposed outside of the second link plate 322. In some embodiments, the mating connection of the plurality of first link plates 321 and the mating connection of the plurality of second link plates 322 are staggered, i.e., the plurality of first link plates 321 do not overlap with the plurality of second link plates 322, allowing finer control of movement and turning of the chain 320.

In some embodiments, the first link plate 321 and the second link plate 322 are rigid plates. The first link plate 321 and the second link plate 322 are provided as rigid plates, and the pushing force or pulling force of the chain 320 can be smoothly and precisely transmitted.

As shown in fig. 7, in some embodiments, the sprocket 310 is provided with a plurality of receiving grooves 313, the plurality of receiving grooves 313 are uniformly distributed along the circumference of the sprocket 310, and the pin 323 is matched with the receiving grooves 313, so that the sprocket 310 rotates to drive the pin 323 to move, so as to drive the chain 320 to move. In some embodiments, the receiving groove 313 is provided in the sprocket body. When the sprocket 310 rotates, the pin 323 in the receiving groove 313 moves with the rotation of the sprocket 310, thereby driving the chain 320 to move; at the same time, the movement of the chain 320 can drive the rear pin 323 into the receiving groove 313 of the sprocket 310, so that the chain 320 can move continuously. In addition, the inner side surface of the receiving groove 313 is inclined so that the pin 323 is easily inserted into the receiving groove 313.

As shown in fig. 9 and 10, in some embodiments, the chain assembly 300 further includes an inner chain case 330 and an outer chain case 340. The chain 320 is disposed in the inner chain case 330, the inner chain case 330 is provided with a rail, the chain 320 is disposed in the rail, and the chain 320 is movable along the rail. The outer chain case 340 is provided to accommodate the inner chain case 330 with a gap provided between the inner chain case 330 and the outer chain case 340 such that the inner chain case 330 can be directly separated from the outer chain case 340 through the gap provided therebetween. Wherein the inner and outer chain cases 330 and 340 are provided with a fluid circulation structure, respectively, so that the fluid flushing the chain assembly 300 can flow out of the outer chain case 340 through the inner chain case 330. The present embodiment can conveniently clean the chain assembly 300 by combining the inner chain case 330, the outer chain case 340, the chain 320 and the fluid circulation structure as described above.

As shown in fig. 11 and 12, in some embodiments, the inner chain case 330 includes an inner plate 331 and an outer plate 332, the inner plate 331 is provided with a rail 334, the chain 320 is provided to the rail 334, and the chain 320 is movable along the rail 334. Wherein the liquid flow-through structure comprises an opening 335 formed in the outer plate 332.

In some embodiments, the track 334 may be annular, including straight and curved sections, disposed around the inside of the inner plate 331. In some embodiments, the annular track 334 may be provided multiple turns around the inner plate 331. In some embodiments, the track 334 may be a guide slot on the inner plate 331. For example, a guide groove may be provided at the outer surface of the inner plate 331, and the guide groove may be provided to surround the inner plate 331 a plurality of times, with the guide groove being the rail 334, and the chain 320 may be provided in the guide groove and may move along the guide groove.

In some embodiments, the track 334 can include a straight strand and a curved strand, the first link plate 321 and the second link plate 322 of the chain 320 can each have a length that is less than the length of the straight strand of the track 334, and the first link plate 321 and the second link plate 322 can each have a length that is less than the radius of the curved strand of the track 334, thereby enabling the chain 320 to turn. In some embodiments, the length of the first link plate 321 or the second link plate 322 may be one moving unit as the chain 320 moves.

In some embodiments, the mating connection of the plurality of first link plates 321 and the mating connection of the plurality of second link plates 322 are staggered, the distance between the staggered mating connection of the first link plates 321 and the second link plates 322 is less than the length of the straight section of the rail 334, and the distance between the staggered mating connection of the first link plates 321 and the second link plates 322 is less than the radius of the curved section of the rail 334, so that turning of the chain 320 can be facilitated and movement of the chain 320 can be controlled accurately. In some embodiments, the distance between the mating connection where the first link plate 321 and the second link plate 322 are staggered may be one unit of movement as the chain 320 moves. By the structural arrangement of the chain 320, the length of the pushed spent fuel assembly can be precisely controlled.

In some embodiments, the pin 323 is provided with a bushing 3231 at a position between the first link plate 321 and the second link plate 322, the bushing 3231 cooperating with the track 334; the pin 323 is provided with a roller 3232 at a position other than the first link plate 321 or the second link plate 322. By providing the bushing 3231, wear of the chain 320 during movement may be reduced. By providing the roller 3232, the smoothness of the chain 320 in motion can be enhanced.

In some embodiments, the track 334 may be a guide groove penetrating the inner plate 331 on the inner plate 331, and the plurality of first link plates 321 and the second link plates 322 connected in a pair in a matching manner are respectively distributed on two sides of the guide groove, where the first link plates 321 are disposed outside the second link plates 322, and the rollers 3232 are disposed outside the first link plates 321 and connected to the first link plates 321.

In some embodiments, the inner chain case 330 may be pulled out of the outer chain case 340 while cleaning the chain assembly 300, thereby cleaning the inner chain case 330 and the chain 320 outside the outer chain case 340. In some embodiments, when cleaning the chain assembly 300, the inner chain case 330 and the chain 320 accommodated in the outer chain case 340 can be directly cleaned without pulling the inner chain case 330 out of the outer chain case 340, and the liquid for washing the chain assembly 300 can flow out of the outer chain case 340 through the inner chain case 330 by the liquid circulation structure.

In some embodiments, when cleaning the chain assembly 300, it may be determined whether to pull the inner chain case 330 out of the outer chain case 340 for cleaning. In some embodiments, when the chain 320 needs to be replaced, the inner chain case 330 and the chain 320 can be pulled out of the outer chain case 340, thereby cleaning the inner chain case 330 and the chain 320 outside the outer chain case 340; when the chain 320 does not need to be replaced, the inner chain case 330 and the chain 320 accommodated in the outer chain case 340 are directly washed, and the liquid washing the chain assembly 300 can flow out of the outer chain case 340 through the inner chain case 330 by the liquid circulation structure, thereby saving time and improving operation efficiency.

In some embodiments, the openings 335 are positioned at a location that is suitable for liquid outflow from the track 334. As shown in fig. 11, the opening 335 may be positioned to correspond to a length of track 334 such that liquid flushing the length of track 334 may flow out of the opening 335. Wherein when the inner chain case 330 is pulled out of the outer chain case 340, the liquid washing the inner chain case 330 and the chains 320 can flow out of the inner chain case 330 through the openings 335; when both the inner chain case 330 and the chain 320 are located in the outer chain case 340, the liquid flushing the chain 320 and the inner chain case 330 can flow from the inner chain case 330 to the outer chain case 340 through the opening 335. In some embodiments, as shown in fig. 11, the openings 335 may be provided in a plurality.

In some embodiments, the inner chain case 330 may further include a pair of outer plates 332 and an inner plate 331. As shown in fig. 12, the outer plate 332 and the inner plate 331 may be fixed by bolts and nuts 336. Wherein the outer plate 332 and the inner plate 331 may be fixed by a plurality of sets of bolts and nuts 336. In some embodiments, a spacer 337 may be further included in the inner chain case 330, the spacer 337 being provided on the bolt for fastening the bolt and supporting the chain 320.

As shown in fig. 9 and 13, in some embodiments, the liquid circulation structure includes a drain 341 provided to the outer chain case 340 such that the liquid flowing into the outer chain case 340 flows out of the outer chain case 340 through the drain. In some embodiments, when cleaning the chain assembly 300, the inner chain case 330 and the chain 320 can be directly washed inside the outer chain case 340 without pulling the inner chain case 330 and the chain 320 out of the outer chain case 340, and the liquid washing the chain assembly 300 can flow to the outer chain case 340 through the inner chain case 330 via the opening 335, and the liquid flowing into the outer chain case 340 flows out of the outer chain case 340 via the drain.

As shown in fig. 6 and 7, in some embodiments, the push assembly 600 includes a push connection 610 and a push portion 620. The pushing connection portion 610 is disposed in the pushing bin 400, the pushing connection portion 610 is connected with the chain 320 of the chain assembly 300, and the chain 320 is used for driving the pushing connection portion 610 to move in the pushing bin 400 and the rotating bin. The pushing part 620 is detachably connected with the pushing connection part 610, the pushing connection part 610 is configured to push the pushing part 620 to move, and the pushing part 620 is used for pushing the spent fuel assembly. In this embodiment, the pushing part 620 is used to push the spent fuel assembly, so that the pushing force is applied to the spent fuel assembly, and the spent fuel assembly is moved.

In some embodiments, as shown in fig. 14, a connection protrusion 611 is disposed at an end of the push connection portion 610 away from the chain 320, as shown in fig. 15, and a connection groove 621 is disposed at the push portion 620, and the connection protrusion 611 cooperates with the connection groove 621 to detachably connect the push connection portion 610 and the push portion 620, so that quick assembly and disassembly of the push connection portion 610 and the push portion 620 are achieved, and replacement of the push portion 620 is facilitated.

Under some conditions, for example, when the shearing device fails, the spent fuel assembly fed to the shearing device needs to be removed, at this time, the pushing part 620 may be replaced by a grabbing part, and the spent fuel assembly is clamped by the grabbing part, so that the spent fuel assembly is moved into the rotary transferring bin. In this embodiment, the pushing portion 620 is convenient to replace by quick assembly and disassembly of the pushing connection portion 610 and the pushing portion 620.

In some embodiments, the push connection 610 includes a push body 612 and a connection protrusion 611, the connection protrusion 611 being disposed at a bottom of the push body 612. Meanwhile, the connection groove 621 is provided at the bottom of the push part 620, and the connection protrusion 611 is matched with the connection groove 621, and the connection protrusion 611 is received in the connection groove 621 so that the push connection part 610 is detachably connected with the push part 620. When the pushing part 620 needs to be replaced, the pushing connection part 610 does not need to be detached, and the pushing connection part 610 and the pushing part 620 can be detached only by lifting the pushing part 620 upwards.

As shown in fig. 14 and 15, in some embodiments, the pushing connection portion 610 is provided with rollers 613, and the plurality of rollers 613 are symmetrically disposed on two sides of the pushing connection portion 610, so that friction is reduced during movement of the pushing connection portion 610, and movement is smoother. In some embodiments, the pushing portion 620 is also provided with rollers 622, and a plurality of rollers 622 are symmetrically disposed at two sides of the pushing portion 620. Wherein the rotational axis of the roller in the pushing assembly 600 is the same as the roller 3232 of the chain 320.

As shown in fig. 15, in some embodiments, the pushing part 620 includes a moving part 623, a connecting rod 624, and a pushing head 625, the moving part 623 is detachably connected to the pushing connection part 610, and a roller 622 is provided on the moving part 623 to reduce friction between the pushing part 620 and the pushing bin 400 or the rotating bin. The connecting rod 624 is connected between the moving portion 623 and the pushing head 625 to fix the pushing head 625 to an end of the moving portion 623 remote from the push connecting portion 610, the pushing head 625 being used for pushing the spent fuel assembly. In some embodiments, the pusher head 625 matches the shape of the spent fuel assembly to evenly transfer the pushing force to the spent fuel assembly, facilitating pushing the spent fuel assembly to move in the rotating silo.

As shown in fig. 1, in some embodiments, an opening is formed at the top of the pushing bin 400, and a cover 410 is connected to the opening of the pushing bin 400 to seal the opening. The cover 410 is provided with a hanging member 411, and the hanging member 411 is used for being connected with external hanging equipment so as to lift and remotely mount and dismount the cover 410. For example, the sling 411 may be a T-piece. In some embodiments, the cover 410 is secured to the pushing ram 400 by a locking assembly 900.

As shown in fig. 1, in some embodiments, the pushing bin 400 is disposed on the outer chain case 340, and a connection port is disposed at the bottom of the pushing bin 400, and is used for communicating the pushing bin 400 with the inner chain case 330, so that the chain 320 moves into the pushing bin 400 via the connection port, so that the chain 320 can be connected with the pushing assembly 600. Wherein the end of the chain 320 connected to the pushing assembly 600 is disposed in the pushing bin 400 so that the chain 320 remains connected to the pushing assembly 600.

As shown in fig. 1 and 13, in some embodiments, the pushing device includes two pushing bin supports 710 disposed in spaced apart relation, and the outer chain case 340 is disposed between the two pushing bin supports 710. The pushing bin 400 is disposed on a pushing bin support base 710, and the pushing bin support base 710 is used for supporting the pushing bin 400, so that the pushing bin 400 is located on the outer chain case 340. In some embodiments, the outer chain case 340 may be secured between two pushing bin supports 710 to facilitate removal of the outer chain case 340.

In some embodiments, by disposing the pushing bin 400 on the outer chain case 340, the top opening of the outer chain case 340 may be sealed, such that the inner chain case 330 is sealed within the space formed by the outer chain case 340, preventing external dust from entering the inner chain case 330, causing problems such as jamming of the chain 320 in the inner chain case 330, affecting the operation of the chain assembly 300.

As shown in fig. 7, in some embodiments, the pushing device further includes a limit detection member 420, where the limit detection member 420 is disposed in the pushing bin 400, and the limit detection member 420 is configured to detect whether the pushing assembly 600 is retracted into place. As shown in fig. 14, the pushing assembly 600 is provided with a limit detection trigger 614, and the limit detection member 420 is configured to generate an in-place signal when in contact with the limit detection trigger 614. Specifically, the limit detection triggering portion 614 may be disposed on the push connection portion 610, and the limit detection triggering portion 614 may be a triggering bump protruding from the surface of the push connection portion 610.

In some embodiments, the limit detector 420 is used to detect whether the pushing assembly 600 is retracted into position when the chain 320 and pushing assembly 600 are retracted to the initial position after the spent fuel assembly is fully pushed into the shearing device. In some embodiments, the limit detector 420 may be a pneumatic sensor, and when the limit detection trigger 614 on the pushing assembly 600 collides with the pneumatic sensor in the pushing bin 400, the pressure of the air path in the pneumatic sensor changes, so as to trigger the limit detector 420 to generate an in-place signal.

As shown in fig. 7, in some embodiments, a stop 430 is disposed within the pushing ram 400, the stop 430 cooperating with the pushing assembly 600 to limit the position of the chain 320 back. In some embodiments, the stop 430 mates with the push link 610 to limit the push assembly 600 from continuing to move toward the sprocket 310, thereby limiting the limit position of the chain 320 back, preventing the chain 320 from fully retracting into the inner chain case 330. Meanwhile, the limiting member 430 can also provide a standard zero position for the stroke calibration of the power assembly 100, so as to calibrate the stroke of the power assembly 100.

In some embodiments, the stop 430 may be a limit stop that may cooperate with the push body 612 of the push link 610 to limit the limit position of the retraction of the push assembly 600. As shown in fig. 7, the pushing main body 612 is supported above the connection protrusion 611, the limiting member 430 is disposed below the pushing main body 612, and when the pushing assembly 600 is retracted to the limit position, the connection protrusion 611 contacts with the limiting member 430, and the connection protrusion 611 is blocked from retracting by the limiting member 430, so that the chain 320 is limited from continuing to retract.

As shown in fig. 1 and 16, in some embodiments, the pushing device further includes a coupling 500, the coupling 500 being connected between the sprocket 310 of the chain assembly 300 and the driving shaft 200 for compensating for radial errors and axial errors between the sprocket 310 and the driving shaft 200.

As shown in fig. 17, in some embodiments, the coupling 500 includes a coupling body 510 and a drive 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 sprocket shaft 311 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 the chain 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 drive shaft 200 and the sprocket shaft 311 by providing the coupling 500.

As shown in fig. 17 and 18, 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 pushing bin 400, for example, the support 521 may be fixed to a side of the pushing bin 400. 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. 19, 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. 20, when the swing member 522 is positioned in the second limiting hole 526, the driving shaft 200 is separated from the coupling body 510, and the detachment of the driving shaft 200 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, the supporting member 521 is provided with a limiting block 527, 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 sprocket shaft 311. 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. 17, an end of the swing member 522 remote 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 sprocket 310.

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 pushing 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. 17, in some embodiments, the coupling body 510 is cylindrical, and an accommodating space for accommodating the driving shaft 200 and the sprocket shaft 311 is formed therein, the driving shaft 200 is inserted into the coupling body 510 from one end of the coupling body 510, and the sprocket shaft 311 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 sprocket shaft 311.

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 chain wheel shaft 311 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 chain wheel shaft 311 through the meshing of the tooth-shaped parts 512 and the tooth-shaped matching parts. For example, the coupling body 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 sprocket shaft 311 is connected to the coupling body 510 and meshed with the tooth portion 512 at the other end of the coupling body 510, so that the sprocket shaft 311 is driven to rotate when the coupling body 510 rotates, thereby realizing power transmission.

As shown in fig. 17, 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 sprocket shaft 311, 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 522 is perpendicular to the connection shaft 523, and the connection shaft 523 is perpendicular to the transmission shaft 200, and in particular, the connection shaft 523 may be vertically disposed. When one end of the swinging member 522 moves between the first limiting hole 525 and the second limiting hole 526, it performs a circular motion with the axis of the connecting shaft 523 as the center of a circle, and drives the connecting shaft 523 to rotate, and drives the sliding member 524 connected with the swinging member 522 to perform a circular motion with the axis of the connecting shaft 523 as the center of a circle, so that the end of the sliding member 524 slides in the sliding groove 511, and simultaneously 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, and avoiding the sliding member 524 driving the coupling body 510 to move along the radial direction, 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 this embodiment, the transmission shaft 200 drives the coupling body and the sprocket shaft 311 to rotate to drive the sprocket body 312 to rotate, so that the driving chain 320 and the pushing assembly 600 move in the pushing bin 400 and the rotating bin to push the spent fuel assembly in the rotating bin to move into the shearing device.

As shown in fig. 1, in some embodiments, the pushing device further includes an air inlet assembly 440, where the air inlet assembly 440 is disposed in the pushing bin 400, and the air inlet assembly 440 is configured to inlet air into the pushing bin 400, so that air flow is blown from the pushing bin 400 to the shearing device via the rotating bin, and dust generated in the shearing device during the shearing process is prevented from entering the receiving device.

As shown in fig. 21 and 22, in some embodiments, the intake assembly 440 includes an intake tube 441 and a liquid seal structure 442. The air inlet pipe 441 is communicated with the pushing bin 400, and the air inlet pipe 441 is used for feeding air to the pushing bin 400. The liquid sealing structure 442 is disposed outside the air inlet pipe 441, and sealing liquid is stored in the liquid sealing structure 442 for sealing the air inlet pipe 441 and the pushing bin 400, so that the air in the air inlet pipe 441 can only flow into the pushing bin 400.

In some embodiments, the fluid-tight structure 442 includes an outer sleeve 4421 and an inner sleeve 4422. The inner sleeve 4422 is connected and communicated with the pushing bin 400, the outer sleeve 4421 is sleeved outside the inner sleeve 4422, the bottom of the outer sleeve 4421 is closed, and an opening is formed in the bottom of the inner sleeve 4422, so that the outer sleeve 4421 and the inner sleeve 4422 are communicated through the bottom opening. The air inlet tube 441 is fixed in the inner sleeve 4422, the top of the air inlet tube 441 forms an outlet, the outlet is positioned in the inner sleeve 4422, the bottom of the air inlet tube 441 forms an inlet, and the inlet of the air inlet tube 441 is positioned outside the outer sleeve 4421.

Wherein the sealing liquid is stored in the outer sleeve 4421 and the inner sleeve 4422, and the liquid level of the sealing liquid does not exceed the outlet of the air inlet pipe 441, so that the air entering the air inlet pipe 441 can only enter the pushing bin 400 through the top of the inner sleeve 4422 through the top opening thereof. In some embodiments, the sealing liquid is deionized water to avoid corrosion of the liquid seal 442 by the sealing liquid.

In some embodiments, the fluid seal 442 further includes a fluid inlet tube 4423, the fluid inlet tube 4423 being disposed on the outer sleeve 4421, the fluid inlet tube 4423 being configured to deliver sealing fluid into the fluid seal 442. In some embodiments, the liquid sealing structure 442 further includes an overflow pipe 4424, the overflow pipe 4424 is disposed on the outer sleeve 4421, and the overflow pipe 4424 is disposed below the outlet of the air inlet pipe 441, so as to ensure that a proper amount of sealing liquid is stored in the liquid sealing device, and prevent the sealing liquid from exceeding the outlet of the air inlet pipe 441 and blocking the air inlet pipe 441.

As shown in fig. 1, in some embodiments, the pushing device further includes an inflatable sealing assembly 800, where the inflatable sealing assembly 800 is disposed at an end of the pushing bin 400 connected to the rotating bin, and is used for sealing the pushing bin 400 to the rotating bin. Wherein, when the rotating bin is communicated with the pushing bin 400, the inflatable sealing assembly 800 is inflated to seal the joint of the rotating bin and the pushing bin 400; as the rotating silo rotates, the inflatable seal assembly 800 deflates to provide space for the rotation of the rotating silo.

As shown in fig. 23, the inflatable sealing assembly 800 includes a sealing mounting portion 810 and an inflatable cushion 820, the sealing mounting portion 810 is mounted at an end of the pushing bin 400, the inflatable cushion 820 is mounted at the sealing mounting portion 810, and the inflatable cushion 820 is located at a side far away from the pushing bin 400, so that the rotating bin and the pushing bin 400 can be sealed when the rotating bin is docked with the pushing bin 400. The seal mounting portion 810 and the inflatable cushion 820 are both annular and matched with the pushing bin 400, the inflatable cushion 820 is formed with a channel 821, and the channel 821 is matched with the spent fuel assembly, so that when the rotating bin is in butt joint with the pushing bin 400, the rotating bin can be communicated with the pushing bin 400, and the pushing assembly 600 can enter the rotating bin through the channel 821 to push the spent fuel assembly in the rotating bin.

In some embodiments, an inflation port 830 is provided on seal mounting portion 810, and inflation port 830 is coupled to inflatable cushion 820 for effecting inflation and deflation of inflatable cushion 820. When the rotary bin is in butt joint with the pushing bin 400, the inflatable cushion 820 is inflated through the inflation port 830 to fill the gap between the rotary bin and the pushing bin 400, so that the sealing of the channel between the rotary bin and the pushing bin 400 is ensured, and dust leakage is prevented. When the rotating bin begins to rotate, the inflatable cushion 820 deflates back, thereby providing space for the rotation of the rotating bin.

As shown in fig. 24, the end of the pushing bin 400 is provided with a connection flange 450, the connection flange 450 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.

As shown in fig. 1, in some embodiments, the pushing device is provided with a locking assembly 900, the locking assembly 900 being used to secure the inflatable seal assembly 800 to the end of the pushing ram 400. In some embodiments, the locking assembly 900 can be remotely controlled to lock and unlock. When the locking assembly 900 is locked, the inflatable sealing assembly 800 is secured to the pushing ram 400; when the locking assembly 900 is unlocked, the inflatable sealing assembly 800 can be disengaged from the pushing bin 400, and remote disassembly and assembly of the inflatable sealing assembly 800 is achieved.

As shown in fig. 24, the connection flange 450 at the end of the pushing bin 400 has an end plate 451, and the end plate 451 is disposed at the top of the pushing bin 400 and may be located at a side of the connection flange 450 facing the pushing bin 400. The inflatable seal assembly 800 is provided with a top plate 811 extending from the top surface of the inflatable seal assembly 800 to a side facing the pushing bin 400. The locking assembly 900 is fixed to the top plate 811 of the inflatable sealing assembly 800, and the locking assembly 900 can lock the top plate 811 of the inflatable sealing assembly 800 and the end plate 451 of the pushing bin 400, thereby achieving the fixation of the inflatable sealing assembly 800 and the pushing bin 400.

As shown in fig. 25 and 26, in some embodiments, the locking assembly 900 includes a stationary portion 910, the stationary portion 910 being configured to be fixedly coupled to the inflatable seal assembly 800, the stationary portion 910 remaining stationary during a locking operation of the inflatable seal assembly 800 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 inflatable sealing assembly 800 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, the top plate 811 of the inflatable sealing assembly 800 is locked in the locking area; when the space of the locking area becomes large, the top plate 811 of the air-packing assembly 800 is unlocked in the locking area.

The stationary portion 910 may be a square sleeve that can securely lock the inflatable seal assembly 800. The stationary portion 910 is fixedly coupled to the inflatable seal assembly 800, for example, the stationary portion 910 may be fixedly coupled to the top plate 811 of the inflatable seal assembly 800. 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 region is formed between the lower end of the square sleeve and the protrusion 922 of the lower end of the arcuate structure, which causes a spatial change in the locking region during the relative movement of the square sleeve and the arcuate structure.

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 moves away from the stationary portion 910 to achieve locking or disengagement of the inflatable sealing assembly 800.

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 inflatable sealing assembly 800, thereby improving the convenience of operation.

As shown in fig. 1, in some embodiments, the pushing device further includes a receiving transition bin 1010, the receiving transition bin 1010 being disposed parallel to one side of the pushing bin 400, the receiving transition bin 1010 being configured to connect with the rotating bin to receive the spent fuel assembly into the rotating bin. The rotating bin downstream of the pushing device may rotate to interface with the accept transition bin 1010 or the pushing bin 400. When the rotary bin is in butt joint with the material receiving transition bin 1010, the spent fuel assemblies pushed by the upstream feeding equipment enter the rotary bin through the material receiving transition bin 1010; when the rotary bin rotates to be in butt joint with the pushing bin 400, the pushing assembly 600 in the pushing bin 400 pushes the spent fuel assembly to move in the rotary bin, so that the spent fuel assembly enters the shearing device to be sheared.

As shown in fig. 1, an opening is formed at the top of the receiving transition bin 1010, and a cover 1011 is connected to the opening of the receiving transition bin 1010 to seal the opening. The cover 1011 is provided with a lifting piece 1012, and the lifting piece 1012 is used for being connected with external lifting equipment so as to lift and remotely disassemble the cover 1011. For example, the lifting members 1012 may be T-shaped members. In some embodiments, the cover 1011 is secured to the take-up transition bin 1010 by a locking assembly 900.

In some embodiments, the accept transition bin 1010, the push bin 400, and the rotary bin are disposed within the feed heat chamber, while the upstream feed device is disposed outside the feed heat chamber. In order to realize the pushing of the spent fuel assembly from the feeding equipment to the rotary bin, the material receiving transition bin 1010 is arranged in the wall body of the feeding hot chamber in a penetrating way.

As shown in fig. 1, an embedded part 1013 is arranged outside the material receiving transition bin 1010, the embedded part 1013 is installed in a wall body, the material receiving transition bin 1010 is penetrated in the embedded part 1013, and the embedded part 1013 is used for fixing the material receiving transition bin 1010 so as to avoid vibration and impact and ensure the stability of the material receiving transition bin 1010. In some embodiments, the embedments 1013 are provided with anchor bolts that are used to secure the embedments 1013 to the wall.

As shown in fig. 1 and 13, in some embodiments, the pushing device further includes a receiving transition bin support base 720, and the receiving transition bin 1010 is supported on the receiving transition bin support base 720. The receiving transition bin support base 720 is arranged in parallel with the outer chain case 340.

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 (20)

1. A pushing device for pushing a 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 chain assembly is in transmission connection with the other end of the transmission shaft, and the transmission shaft is used for driving the chain assembly to reciprocate;

the pushing bin is used for being connected with an external rotating bin, and the rotating bin is used for accommodating the spent fuel assembly;

the pushing assembly is arranged in the pushing bin and connected with the chain assembly, and the chain assembly is used for driving the pushing assembly to move in the pushing bin and the rotating bin so as to push the spent fuel assembly in the rotating bin to move to the shearing device.

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

The chain wheel is arranged in the pushing bin and connected with the transmission shaft, and the transmission shaft is used for driving the chain wheel to rotate;

and the chain is connected with the pushing assembly and matched with the chain wheel, so that the chain wheel can be driven to move by rotating.

3. The apparatus of claim 2, wherein the chain comprises:

a plurality of first link plates that are mated with each other;

a plurality of second link plates that are mated with each other;

the first chain plate and the second chain plate are fixedly connected through the pin shafts.

4. A device according to claim 3, wherein the sprocket is provided with a plurality of receiving grooves, the plurality of receiving grooves are uniformly distributed along the circumference of the sprocket, and the pin shaft is matched with the receiving grooves, so that the sprocket can rotate to drive the pin shaft to move so as to drive the chain to move.

5. The apparatus of claim 2, wherein the chain assembly further comprises:

the chain is arranged in the inner chain box, the inner chain box is provided with a track, the chain is arranged on the track, and the chain can move along the track;

The outer chain box is arranged to accommodate the inner chain box, and a gap is arranged between the inner chain box and the outer chain box, so that the inner chain box can be directly separated from the outer chain box through the gap arranged between the inner chain box and the outer chain box;

wherein, interior chain case with outer chain case sets up the liquid circulation structure respectively, so that wash the liquid of chain subassembly can be via interior chain case follow outer chain case flows.

6. The apparatus of claim 1, wherein the push assembly comprises:

the pushing connecting part is connected with a chain of the chain assembly, and the chain is used for driving the pushing connecting part to move in the pushing bin and the rotating bin;

the pushing part is detachably connected with the pushing connecting part, the pushing connecting part is arranged to push the pushing part to move, and the pushing part is used for pushing the spent fuel assembly.

7. The device according to claim 6, wherein the push connection portion is provided with a connection protrusion at an end thereof remote from the chain, the push portion is provided with a connection groove, and the connection protrusion is engaged with the connection groove to detachably connect the push connection portion with the push portion.

8. The device according to claim 5, characterized in that the pushing bin is arranged on the outer chain box, and the pushing bin is provided with a connecting port for communicating the pushing bin with the inner chain box so that the chain moves into the pushing bin through the connecting port;

the chain is connected with the pushing assembly, and one end of the chain, which is connected with the pushing assembly, is arranged in the pushing bin so as to be connected with the pushing assembly.

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

the limit detection piece is arranged in the pushing bin and is used for detecting whether the pushing assembly retreats in place or not;

the pushing assembly is provided with a limit detection trigger part, and the limit detection part is arranged to generate an in-place signal when contacting with the limit detection trigger part.

10. The apparatus of claim 1, wherein a stop is disposed within the pushing bin and cooperates with the pushing assembly to limit the position of chain retraction in the chain assembly.

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

The air inlet assembly is arranged in the pushing bin and is used for introducing air into the pushing bin.

12. The apparatus of claim 11, wherein the air intake assembly comprises:

the air inlet pipe is communicated with the pushing bin and is used for feeding air to the pushing bin;

the liquid seal structure is arranged outside the air inlet pipe, and sealing liquid is stored in the liquid seal structure and used for sealing the air inlet pipe and the pushing bin.

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

the coupling is connected between the chain wheel of the chain assembly and the transmission shaft and is used for compensating radial errors and axial errors between the chain wheel and the transmission shaft.

14. The apparatus of claim 13, wherein the coupling comprises:

the transmission shaft is detachably connected with one end of the coupling body far away from the power assembly, and the chain wheel 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.

15. The apparatus of claim 14, wherein the drive assembly comprises:

the supporting piece is fixed on the pushing bin 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.

16. The device according to claim 15, 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 chain wheel to rotate, the sliding piece slides in the sliding groove, so that the coupling body rotates relative to the sliding piece.

17. The apparatus of claim 1, wherein the power assembly is disposed outside of the radiological environment in which the chain assembly, pushing assembly, and pushing bin are located; the drive shaft includes:

a solid shaft connected with the power assembly;

a hollow shaft connected between the solid shaft and the chain 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.

18. The apparatus of claim 17, 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.

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

the inflation sealing assembly is arranged at one end of the pushing bin, which is connected with the rotating bin;

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

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

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

the material receiving transition bin is arranged on one side of the pushing bin in parallel and is used for being connected with the rotating bin so as to receive the spent fuel assembly into the rotating bin.