Rodding apparatus, spent fuel assembly handling system, and method of rodding

Abstract

The application discloses a kind of bar material arrangement device, spent fuel assembly processing system and bar material arrangement method, for making the multiple bars of entering bar material arrangement device sequentially move in stepped material bin, to carry out orderly arrangement to multiple bars by multiple sub-material bins, finally realize the purpose of single root feeding.The bar material arrangement device includes turnover bin (2) and stepped material bin (3).Stepped material bin (3) includes two end plates oppositely arranged and material arrangement component.Material arrangement component is located between two end plates.Each material arrangement component forms a sub-material bin with the area surrounded by two end plates, and the multiple bars transferred from turnover bin (2) to stepped material bin (3) first enter the first sub-material bin close to turnover bin (2).Each material arrangement component is used to transfer multiple bars from the first sub-material bin close to turnover bin (2) to the last sub-material bin farthest from turnover bin (2) step by step, and make single bar transfer out of the last sub-material bin.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of nuclear power, and particularly relates to a rod material sorting device, a spent fuel assembly processing system and a rod material sorting method. BACKGROUND

[0002] Spent fuel assembly disintegration is a key, complex and necessary process of spent fuel reprocessing plant, which is used for shredding fuel rods in the spent fuel assembly. At present, the spent fuel disintegration device in China is mainly a shearing machine, and the shearing machine may cause some adverse consequences when processing the spent fuel assembly with a stainless steel outer sleeve. Therefore, it is necessary to eject the fuel rods in the spent fuel assembly and then process them.

[0003] A spent fuel assembly includes a plurality of fuel rods, and the plurality of fuel rods in the spent fuel assembly need to be sorted after being ejected and then sent into a shredding device one by one for subsequent processing. The process is complicated, needs manual assistance and takes a lot of time.

[0004] At present, there is no device for combing the plurality of fuel rods into single rods and then conveying them to the shredding device. SUMMARY

[0005] The application aims to solve the above problems in the prior art and provides a rod material sorting device, a spent fuel assembly processing system and a rod material sorting method, which can make the plurality of rods entering the rod material sorting device move in the stepped material bin one by one, comb the plurality of rods through the plurality of sub-material bins, and finally achieve the purpose of single rod feeding.

[0006] In the first aspect, the application provides a rod material sorting device, which includes a turnover bin and a stepped material bin. The turnover bin is used for receiving a plurality of rods and then performing lateral turnover to transfer the plurality of rods horizontally into the stepped material bin. The stepped material bin is located on one side of the turnover bin. The stepped material bin includes two oppositely arranged end plates and a material sorting assembly. The material sorting assembly is located between the two end plates and has a plurality of components which are connected in sequence. Each material sorting assembly and the area surrounded by the two end plates form a sub-material bin. The plurality of rods transferred into the stepped material bin from the turnover bin first enter the first sub-material bin close to the turnover bin. Each material sorting assembly is used for transferring the plurality of rods from the first sub-material bin close to the turnover bin to the last sub-material bin farthest from the turnover bin in stages, and transferring a single rod out of the last sub-material bin.

[0007] In some embodiments, each of the material sorting assemblies comprises a first plate, a lifting plate and a second plate arranged between two of the end plates in the first direction, the first plate and the second plate are close to each other and form a V shape, the lifting plate is attached to the second plate and parallel to the plate surface of the second plate; the top end of the second plate of a previous material sorting assembly is directly connected to the top end of the first plate of a subsequent material sorting assembly; the first direction is away from the turnover bin. In each of the lifting plates, the top surface of the lifting plate is inclined towards the first direction, and the lifting plate can reciprocate up and down along the surface of the second plate; when the lifting plate rises, the bar in the corresponding sub-bin is driven by the top surface of the lifting plate to rise along the surface of the second plate, and when the position of the bar is higher than the top end of the second plate, the bar slides into the subsequent sub-bin, and finally a single bar rolls out of the last sub-bin.

[0008] In some embodiments, the diameter of the bar is d, and the thickness of the lifting plate is D, 1.1d≤D≤1.3d.

[0009] In some embodiments, the turnover bin comprises a turnover bin door, which can be opened when the turnover bin is turned under the action of external force, and closed under the action of its own gravity.

[0010] In some embodiments, the bar material sorting device further comprises a first driving assembly and a second driving assembly. The first driving assembly is connected to each of the lifting plates for driving each of the lifting plates to reciprocate up and down. The second driving assembly is connected to the turnover bin for driving the turnover bin to turn to transversely transport the bars in the turnover bin to the stepped bin, and to drive the turnover bin to reset after turning.

[0011] In some embodiments, the bar is a spent fuel rod, and the turnover bin and the stepped bin are arranged in a shielding chamber. The first driving assembly comprises a first driving member and a first transmission member, the first driving member is arranged outside the shielding chamber, and the first transmission member is arranged inside the shielding chamber and connected to each of the lifting plates; the first driving member is connected to the first transmission member after penetrating through the shielding wall of the shielding chamber, so as to drive each of the lifting plates to reciprocate up and down through the first transmission member. The second driving assembly comprises a second driving member and a second transmission member, the second driving member is arranged outside the shielding chamber, and the second transmission member is arranged on the stepped bin inside the shielding chamber and connected to the turnover bin; the second driving member is connected to the second transmission member after penetrating through the shielding wall of the shielding chamber, so as to drive the turnover bin to turn and reset through the second transmission member.

[0012] In some embodiments, the first driving member is detachably connected with the first transmission member through a first docking module, and the second driving member is detachably connected with the second transmission member through a second docking module.

[0013] In some embodiments, the bar material arranging device further comprises a fixed support. The first transmission member is arranged on the fixed support, and the stepped material bin is detachably arranged on the fixed support through a first quick-release mechanism. The top of each of the two end plates of the stepped material bin is provided with a first lifting lug.

[0014] Thus, the bar material arranging device in the embodiments of the present application can make the turnover bin receive multiple bars and then laterally turn over to horizontally transfer the multiple bars to the stepped material bin. By arranging multiple material arranging assemblies between the two end plates of the stepped material bin, each material arranging assembly and the area surrounded by the two end plates form a sub-material bin. After connecting the multiple material arranging assemblies in sequence, the multiple sub-material bins are also connected in sequence. By making each material arranging assembly transfer the bars from the first sub-material bin closest to the turnover bin to the last sub-material bin farthest from the turnover bin, the multiple material arranging assemblies can drive the bars to move in the multiple sub-material bins in sequence. In this process, the multiple sub-material bins can orderly arrange the bars through stepped material arrangement, and finally make a single bar roll out of the last sub-material bin to realize the output of the single bar.

[0015] In a second aspect, the embodiments of the present application further provide a spent fuel assembly processing system. The spent fuel assembly processing system comprises a disintegration device and the bar material arranging device in the first aspect. The disintegration device is used to receive a spent fuel assembly and separate multiple spent fuel rods in the spent fuel assembly, and then deliver the multiple spent fuel rods to the bar material arranging device. The bar material arranging device is used to arrange the multiple spent fuel rods after receiving the multiple spent fuel rods, and finally make a single spent fuel rod roll out of the last sub-material bin of the stepped material bin.

[0016] In a third aspect, the embodiments of the present application further provide a bar material arranging method. The bar material arranging method uses the bar material arranging device in the first aspect. The bar material arranging method comprises: after a turnover bin receives multiple bars, the turnover bin laterally turns over to horizontally transfer the bars to the first sub-material bin of a stepped material bin closest to the turnover bin; multiple material arranging assemblies transfer the bars from the first sub-material bin closest to the turnover bin to the last sub-material bin farthest from the turnover bin in stages, and make a single bar roll out of the last sub-material bin.

[0017] The spent fuel assembly processing system and the bar material arranging method provided by the embodiments of the present application have the same beneficial effects as the bar material arranging device described above, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 : a front view of a bar material sorting device according to an embodiment of the present application;

[0019] Figure 2 : a back view of a bar material sorting device according to an embodiment of the present application;

[0020] Figure 3 : a partial view of a bar material sorting device according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Embodiment 1:

[0023] As shown in Figure 1 and Figure 2 , the present application provides a bar material sorting device, which is applied to the material sorting and conveying process of bars, and is used for combing multiple bars into a single bar and outputting to the next process.

[0024] As shown in Figure 1 and Figure 2 , the bar material sorting device includes a turnover bin 2 and a stepped material bin 3. The turnover bin 2 is used to receive multiple bars and then perform lateral turnover to transfer the multiple bars horizontally into the stepped material bin 3.

[0025] For example, the turnover bin 2 is arranged close to a bar generating device, and the generated multiple bars are conveyed into the turnover bin 2; or, the multiple bars can also be placed in the turnover bin 2 by manual operation. The turnover bin 2 can temporarily store the multiple bars.

[0026] For example, the turnover bin 2 is in the shape of a long strip, and the length of the turnover bin 2 can be slightly greater than the length of the bar, so that the multiple bars can be arranged in order after entering the turnover bin 2.

[0027] In the initial position, the turnover bin 2 is in a horizontal state, which is convenient for receiving and temporarily storing the bars in the turnover bin 2; when it is necessary to transfer the bars in the turnover bin 2 into the stepped material bin 3, the turnover bin 2 is laterally overturned, and the bars slide into the stepped material bin 3 due to gravity; then, the turnover bin 2 can be restored to the horizontal state.

[0028] As shown in Figure 1 and Figure 2 , the stepped material bin 3 is located on one side of the turnover bin 2. In combination with Figure 3The stepped material bin 3 comprises two end plates arranged oppositely and a material arranging assembly. The material arranging assembly is arranged between the two end plates and a plurality of material arranging assemblies are sequentially connected. Each material arranging assembly and the area surrounded by the two end plates form a sub-material bin. The plurality of bars transferred from the turnover bin 2 into the stepped material bin 3 first enter the first sub-material bin close to the turnover bin 2. Each material arranging assembly is used to transfer the plurality of bars from the first sub-material bin close to the turnover bin 2 to the last sub-material bin farthest from the turnover bin 2, and make a single bar transferred out of the last sub-material bin.

[0029] As shown in Figure 1 , the two end plates are vertically arranged to protect the bars entering the sub-material bin from falling.

[0030] For example, the number of material arranging assemblies can be two, three or four. The embodiment shows two material arranging assemblies. The plurality of material arranging assemblies can achieve better material arranging function.

[0031] The plurality of material arranging assemblies are sequentially connected, so the plurality of sub-material bins formed by the plurality of material arranging assemblies and the two end plates are sequentially connected. After the plurality of bars enter the first sub-material bin close to the turnover bin 2, the plurality of material arranging assemblies drive the bars to move in the plurality of sub-material bins sequentially. In this process, the plurality of sub-material bins orderly arrange the bars by stepped material arranging, and finally make a single bar transferred out of the last sub-material bin, achieving the output of a single bar.

[0032] Therefore, the bar material arranging device in the embodiment of the present application can make the turnover bin 2 receive a plurality of bars and then laterally turn over to transfer the plurality of bars horizontally into the stepped material bin 3. By arranging a plurality of material arranging assemblies between the two end plates of the stepped material bin 3, each material arranging assembly and the area surrounded by the two end plates form a sub-material bin. After sequentially connecting the plurality of material arranging assemblies, the plurality of sub-material bins are also sequentially connected. By making each material arranging assembly transfer the bars from the first sub-material bin close to the turnover bin 2 to the last sub-material bin farthest from the turnover bin 2, the plurality of material arranging assemblies drive the bars to move in the plurality of sub-material bins sequentially. In this process, the plurality of sub-material bins can orderly arrange the bars by stepped material arranging, and finally make a single bar transferred out of the last sub-material bin, achieving the output of a single bar.

[0033] In some embodiments, in combination with Figure 1 and Figure 3, along the first direction X, each sorting assembly comprises a first plate 4, a lifting plate 6 and a second plate 5, which are arranged between two end plates, the first plate 4 and the second plate 5 are close to each other and form a V shape, and the lifting plate 6 is attached to the second plate 5 and parallel to the plate surface of the second plate 5; the top end of the second plate 5 of the previous sorting assembly is directly connected to the top end of the first plate 4 of the next sorting assembly; the first direction X is the direction away from the turnover bin 2. In each lifting plate 6, the top surface of the lifting plate 6 is inclined towards the first direction X, and the lifting plate 6 can reciprocate up and down along the surface of the second plate 5; when the lifting plate 6 rises, it drives the bar in the corresponding sub-bin to rise along the surface of the second plate 5, and when the position of the bar is higher than the top end of the second plate 5, the bar falls into the next sub-bin, and finally makes a single bar roll out of the last sub-bin.

[0034] Exemplarily, the materials of the first plate 4, the lifting plate 6 and the second plate 5 can be metal materials such as stainless steel and aluminum, so that the strength of the first plate 4, the lifting plate 6 and the second plate 5 is higher, and the service life of the first plate 4, the lifting plate 6 and the second plate 5 is improved. Of course, the materials of the first plate 4, the lifting plate 6 and the second plate 5 can also be non-metallic materials.

[0035] Exemplarily, the first plate 4, the lifting plate 6 and the second plate 5 can be independent of each other, and the top end of the second plate 5 of the previous sorting assembly is connected to the top end of the first plate 4 of the next sorting assembly by welding; or the second plate 5 in the previous sorting assembly and the first plate 4 in the next sorting assembly are formed by bending the same plate material.

[0036] As can be understood, as shown in Figure 3 , the shape of each sub-bin is also V-shaped.

[0037] Exemplarily, in combination with Figure 1 and Figure 3 , the side close to the turnover bin 2 of the first sub-bin close to the turnover bin 2 is also provided with a protective plate, which is folded upwards after being stacked on the corresponding first plate 4 to prevent the bar entering the first sub-bin from falling. The outer side of the last sub-bin away from the turnover bin 2 is provided with a hopper 16 connected with the corresponding second plate 5, which is used to receive the bar rolled out of the last sub-bin and guide the bar, so that the bar can roll along the hopper 16 to the target position (such as a single bar transfer device).

[0038] Exemplarily, the first plate 4, the lifting plate 6 and the second plate 5 are in contact in sequence, which can avoid the bar from falling from the gap between the first plate 4 and the lifting plate 6 and the gap between the lifting plate 6 and the second plate 5.

[0039] Exemplarily, the up-and-down reciprocating motion of each lifting plate 6 can be synchronous or asynchronous.

[0040] It should be noted that each lifting plate 6 can be lowered to the lowest part of the corresponding sub-warehouse.

[0041] In combination Figure 3 When there are bars in the sub-warehouse and the lifting plate 6 is lowered to the lowest part of the sub-warehouse, because the shape of the sub-warehouse is V-shaped, the bars will move to the lowest part and be stuck in the gap between the top surface of the lifting plate 6 and the plate surface of the second plate 5; when the lifting plate 6 is raised, the top surface of the lifting plate 6 pushes the bars to rise along the surface of the second plate 5; when the position of the bars is higher than the top end of the second plate 5, because of the oblique pushing force of the top surface of the lifting plate 6, the bars slide into the next sub-warehouse.

[0042] Through the up-and-down reciprocating movement of the lifting plate 6 in the plurality of material arranging assemblies, the bars in the previous sub-warehouse are continuously driven into the next sub-warehouse, and in this process, each lifting plate 6 can only drive part of the bars in the previous sub-warehouse to rise and slide into the next sub-warehouse, so that the number of bars in the next sub-warehouse is less than the number of bars in the previous sub-warehouse, and this process is repeated, thereby realizing the arrangement of the bars, and finally realizing that only a single bar is rolled out of the last sub-warehouse at a time.

[0043] In some embodiments, the diameter of the bars is d, and the thickness of the lifting plate 6 is D, and 1.1d≤D≤1.3d.

[0044] For example, when the diameter d of the bars is 10 cm, the thickness D of the lifting plate 6 satisfies 11 cm≤D≤13 cm, for example, the thickness of the lifting plate 6 can be 11 cm, 12 cm or 13 cm, etc.

[0045] In combination Figure 3 Through the above arrangement, the width of the top surface of the lifting plate 6 can be increased, thereby increasing the size of the gap between the top surface of the lifting plate 6 and the second plate 5, so as to facilitate the bars to be stuck in the gap between the top surface of the lifting plate 6 and the second plate 5; and even if the bars are slightly bent, the slightly bent bars can also be stuck in the gap between the top surface of the lifting plate 6 and the second plate 5, so that the lifting plate 6 can better push the bars to rise along the surface of the second plate 5 by the top surface, and the bars can be transported to the next sub-warehouse.

[0046] In some examples, the first plate 4, the lifting plate 6 and the second plate 5 are detachably arranged on the two end plates, so as to be replaced according to the shape and size of the bars, thereby enabling the first plate 4, the lifting plate 6 and the second plate 5 to adapt to bars of different types and sizes.

[0047] In some examples, a plurality of material blocking plates are arranged on the end plate, one material blocking plate is arranged directly above one second plate 5, and the spacing between the material blocking plate and the top end of the second plate 5 can only pass one bar. When the lifting plate 6 drives the plurality of stacked bars to rise, the blocking plate can block the excess bars from entering the next sub-warehouse, so that the number of bars entering the next sub-warehouse is single.

[0048] In some embodiments, as shown in Figure 1 The turnover bin 2 includes a turnover bin door 1, which can be opened under the action of external force and closed under the action of its own gravity.

[0049] As described above, the turnover bin 2 is arranged close to the bar generating device, and the outlet of the bar generating device is provided with an ejection support. After the bar generating device generates a plurality of bars, it moves towards the turnover bin door 1 of the turnover bin 2, and the turnover bin door 1 is turned open through the ejection support, and the plurality of bars enter the turnover bin 2 through the outlet of the bar generating device. Then, the bar generating device leaves, and the turnover bin door 1 is closed under the action of its own gravity, realizing the closure of the turnover bin 2.

[0050] Through the above arrangement, it is convenient for the bars of the bar generating device to enter the turnover bin 2, and the turnover bin 2 is automatically closed after the bars enter the turnover bin 2, preventing the bars from leaking from the turnover bin door 1.

[0051] In some embodiments, the bar material device further includes a first driving assembly and a second driving assembly. The first driving assembly is connected with each lifting plate 6 and is used to drive each lifting plate 6 to reciprocate up and down. The second driving assembly is connected with the turnover bin 2 and is used to drive the turnover bin 2 to turn over so that the bars in the turnover bin 2 are transversely transferred to the stepped bin 3, and to drive the turnover bin 2 to reset after turning over.

[0052] For example, the bottom of each lifting plate 6 is connected with the first driving assembly, and the first driving assembly can simultaneously drive each lifting plate 6 to reciprocate up and down.

[0053] For example, the first driving assembly can be a cylinder, a linear motor or the like which can reciprocate.

[0054] For example, the turnover bin 2 is hinged on a fixed plate, and the second driving assembly can provide a torsional force to the turnover bin 2 to drive the turnover bin 2 to turn over.

[0055] Through the above arrangement, the actions of the lifting plate 6 and the turnover bin 2 can be controlled.

[0056] In some embodiments, the bars are spent fuel rods, and the turnover bin 2 and the stepped bin 3 are arranged in a shielding chamber.

[0057] For example, the above-mentioned rod generating device can be a spent fuel assembly dismantling device, which is used to separate multiple spent fuel rods inside the spent fuel assembly and transport the separated multiple spent fuel rods to the overturning chamber 2.

[0058] In some embodiments, the first drive assembly includes a first drive member and a first transmission member. The first drive member is disposed outside the shielding room, and the first transmission member is disposed inside the shielding room and connected to each lifting plate 6. The first drive member passes through the shielding wall of the shielding room and is connected to the first transmission member so as to drive each lifting plate 6 to move up and down reciprocally through the first transmission member.

[0059] For example, the first driving component can be a general-purpose motor, etc., and the first driving component penetrates the shielding wall through a through-hole. Placing the first driving component outside the shielding wall can reduce the impact of radiation on the first driving component and facilitate the inspection and replacement of the first driving component.

[0060] like Figure 2 As shown, the first transmission component may include a commutator 9 and a lift 8. The commutator 9 is connected to the motor drive and the lift 8 is connected to the lift 8. The lift 8 is also connected to each lifting plate 6.

[0061] In some examples, the elevator 8 is movably connected to each lifting plate 6, facilitating the disassembly of the elevator 8 and each lifting plate 6.

[0062] refer to Figure 2 The power of the motor (i.e. the first driving component) is transmitted to the commutator 9. The commutator 9 converts the vertically transmitted power into the horizontally transmitted power and transmits it to the elevator 8, thereby driving the elevator 8 to move. After the elevator 8 moves, it drives each lifting plate 6 to move up and down reciprocally.

[0063] The above configuration facilitates the modularization of the first drive component and makes it easier to assemble, maintain, and replace it later.

[0064] In some embodiments, such as Figure 2 As shown, the second drive assembly includes a second drive component and a second transmission component 7. The second drive component is located outside the shielding room, and the second transmission component 7 is located on the stepped hopper 3 inside the shielding room and connected to the tilting hopper 2. The second drive component passes through the shielding wall of the shielding room and is connected to the second transmission component 7 so as to drive the tilting hopper 2 to tilt and reset through the second transmission component 7.

[0065] For example, the second drive component can be a general-purpose motor, etc., and it penetrates the shielding wall through a through-hole. Placing the second drive component outside the shielding wall can reduce the impact of radiation on it and facilitate its maintenance and replacement.

[0066] Exemplarily, the stepped hopper 3 has a turnover support, and the turnover bin 2 is hinged on the turnover support, so that the turnover bin 2 can be turned over to one side of the stepped hopper 3.

[0067] Exemplarily, the second transmission member 7 can be a speed reducer.

[0068] The turnover bin 2 can accommodate a large number of spent fuel rods, and the speed reducer can amplify the driving force of the second driving member, so that the second transmission member 7 has sufficient driving force to drive the turnover bin 2 to turn over.

[0069] Through the above arrangement, the modularity of the second driving assembly is facilitated, and the assembly and later maintenance and replacement of the second driving assembly are facilitated.

[0070] In some embodiments, as shown in Figure 2 The first driving member is detachably connected with the first transmission member through the first docking module 12. The second driving member is detachably connected with the second transmission member 7 through the second docking module 15.

[0071] Exemplarily, one end of the first docking module 12 is connected with the first driving member through a quick interface, and the other end is connected with the first transmission member through a quick interface. One end of the second docking module 15 is connected with the second driving member through a quick interface, and the other end is connected with the second transmission member through a quick interface.

[0072] Through the above arrangement, the first driving member and the first transmission member can be quickly detached, which is conducive to improving the convenience of disassembling the first driving member and the first transmission member and improving the convenience of disassembling the second driving member and the second transmission member.

[0073] In some embodiments, as shown in Figure 2 The rod feeding device further comprises a fixed support. The first transmission member is arranged on the fixed support, and the stepped hopper 3 is detachably arranged on the fixed support through the first quick-release mechanism 13. The top of each of the two end plates of the stepped hopper 3 is provided with a first lifting lug 14.

[0074] Exemplarily, the first quick-release mechanism 13 is a C-shaped quick-release mechanism. Each of the two end plates of the stepped hopper 3 has a first fixing plate extending outwardly, and the fixed support is provided with a second fixing plate corresponding to the position of the first fixing plate.

[0075] After the stepped hopper 3 is placed on the fixed support, the first fixing plate and the second fixing plate are in contact. At this time, the first fixing plate and the second fixing plate are clamped through the C-shaped quick-release mechanism, so as to fix the stepped hopper 3 on the fixed support.

[0076] When the stepped hopper 3 needs to be separated, only the C-shaped quick release mechanism is disengaged and then the rod feeding device is separated into two independent parts, wherein the first part is the stepped hopper 3 and the turnover hopper 2, and the second part is the fixed support and the first transmission member. Therefore, the lifting tool can be lifted away by the first lifting lug 14 to perform separate maintenance or replacement operation on the first part.

[0077] Therefore, the disassembly difficulty of the rod feeding device is reduced, and the long-distance disassembly and maintenance function of the rod feeding device is facilitated.

[0078] In some examples, as shown in Figure 2 The fixed support includes a first fixed support and a second fixed support, the first fixed support is arranged above the second fixed support, and the second lifting lug 18 is arranged on the first fixed support. The first part is arranged on the first fixed support, and the first transmission member is arranged on the first fixed support; the second fixed support is placed on the fixed surface (or the ground) to provide support for the components arranged on the second fixed support.

[0079] Similarly, the first fixed support is detachably arranged on the second fixed support through the second quick release mechanism 19, and the second quick release mechanism 19 can also be a C-shaped quick release mechanism. Therefore, the lifting tool can be lifted away by the second lifting lug 18 to perform maintenance or replacement operation on the first fixed support and the first transmission member.

[0080] In some examples, as shown in Figure 1 The stepped hopper 3 is further provided with a feeding-in-place detection device 17, which is used to detect the number of rods output by the last sub-hopper of the stepped hopper 3.

[0081] For example, the feeding-in-place detection device 17 can be a counter, such as an electronic counter.

[0082] Through the above arrangement, the number of rods output by the rod feeding device can be counted as the basis for processing by the subsequent device.

[0083] The working process of the rod feeding device in the embodiment will be described below in conjunction with Figure 1 , Figure 2 and Figure 3 The initial state is that the turnover hopper 2 is in a horizontal state.

[0084] S1, a plurality of rods enter the turnover hopper 2 through the turnover hopper door 1.

[0085] S2, the second driving member is started, and the turnover hopper 2 is turned over through the second transmission member 7, so that the plurality of rods in the turnover hopper 2 all slide into the stepped hopper 3 and enter the sub-hopper closest to the turnover hopper 2.

[0086] S3, the second driving member drives the turnover bin 2 to reset to the horizontal state through the second transmission member 7, and the second driving member is closed.

[0087] S4, the first driving member is started, and each lifting plate 6 is driven to reciprocate up and down through the first transmission member. In each sub-bunker, when the lifting plate 6 descends to the lowest point, a single bar is clamped into the gap between the top surface of the lifting plate 6 and the second plate 5. Then the lifting plate 6 rises along the plate surface of the second plate 5, and the bar is also lifted along the plate surface of the second plate 5 through the top surface of the lifting plate 6. When the lifting plate 6 rises to the highest point, the height of the top surface of the lifting plate 6 exceeds the height of the second plate 5, because the top surface of the lifting plate 6 is inclined to the first direction X, the bar slides to the first direction X and enters the next sub-bunker. Repeat the above operation, and the bar moves in the multiple sub-bunkers in turn, and finally makes the last sub-bunker output a single bar at a time.

[0088] S5, after all the bars in the stepped bunker 3 are output through the last sub-bunker, the first driving member is closed.

[0089] At this point, multiple bars entering the bar material sorting device can be moved in the stepped bunker 3 in turn, so as to be orderly arranged by the multiple material sorting assemblies of the stepped bunker 3, and finally achieve the purpose of single feeding.

[0090] Embodiment 2:

[0091] The embodiment of the present application also provides a spent fuel assembly processing system for use in the post-processing process of the spent fuel assembly. The spent fuel assembly processing system comprises a disintegration device and the bar material sorting device in embodiment 1. The disintegration device is used to receive the spent fuel assembly and separate multiple spent fuel rods in the spent fuel assembly, and then deliver the spent fuel rods to the bar material sorting device. The bar material sorting device is used to sort the multiple spent fuel rods after receiving the multiple spent fuel rods, and finally make a single spent fuel rod roll out from the last sub-bunker of the stepped bunker 3 to a post-stage device.

[0092] Illustratively, the disintegration device is used to separate the stainless steel outer sleeve of the spent fuel assembly and the multiple spent fuel rods inside, so that the spent fuel rods can be processed individually, avoiding the adverse consequences that may be caused by the shearing machine processing the spent fuel assembly with the stainless steel outer sleeve in the prior art.

[0093] After the disintegration device separates the multiple spent fuel rods, the multiple spent fuel rods are delivered to the turnover bin 2 of the bar material sorting device.

[0094] Illustratively, the post-stage device described above can be a shredding device for the spent fuel rods, so as to shred the spent fuel rods into short segments.

[0095] Through the above setting, after the spent fuel rods are separated by the disassembling device, the spent fuel rods are arranged, and a single spent fuel rod is rolled out of the last sub-hopper of the stepped hopper 3, thereby realizing the single-rod feeding function of the spent fuel assembly processing system.

[0096] Embodiment 3:

[0097] The embodiment of the present application also provides a rod arrangement method, which uses the rod arrangement device in Embodiment 1 and is used in a use scenario requiring output of single rods. The rod arrangement method comprises: after the turnover hopper 2 receives multiple rods, the turnover hopper 2 is laterally overturned to horizontally transfer the rods into the first sub-hopper of the stepped hopper 3 close to the turnover hopper 2; multiple arrangement assemblies transfer the rods from the first sub-hopper close to the turnover hopper 2 to the last sub-hopper farthest from the turnover hopper 2 step by step, and make a single rod transferred out of the last sub-hopper.

[0098] After the turnover hopper 2 is overturned, the multiple rods in the turnover hopper 2 are horizontally transferred into the first sub-hopper of the stepped hopper 3 close to the turnover hopper 2, and in the process that the multiple arrangement assemblies transfer the rods from the first sub-hopper close to the turnover hopper 2 to the last sub-hopper farthest from the turnover hopper 2 step by step, the multiple sub-hoppers orderly arrange the rods in a stepped arrangement manner, and finally make a single rod transferred out of the last sub-hopper, thereby realizing the arrangement of the rods and the output of the single rods and meeting the use requirement of the use scenario requiring output of single rods.

[0099] Then, the turnover hopper 2 is reset, and waits for input of the next batch of rods.

[0100] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also regarded as the protection scope of the present application.

Claims

1. A bar-type feeding device, characterized in that, include: The flipping bin (2) is used to receive multiple bars and flip them laterally to transfer the multiple bars laterally into the stepped bin (3). and, A stepped silo (3) is located on one side of the tilting silo (2); the stepped silo (3) includes: The two end plates are set opposite to each other, and The material handling assembly is located between the two end plates, and there are multiple material handling assemblies connected in sequence. Each material handling assembly and the area enclosed by the two end plates form a sub-bin. The multiple bars that are transferred from the flip bin (2) to the stepped bin (3) first enter the first sub-bin closest to the flip bin (2). Each of the aforementioned material handling components is used to transfer the multiple bars from the first sub-bin closest to the flipping bin (2) to the last sub-bin furthest from the flipping bin (2) in stages, and to transfer a single bar out from the last sub-bin; Along the first direction, each of the material handling components includes a first plate (4), a lifting plate (6), and a second plate (5), which are arranged between the two end plates. The first plate (4) and the second plate (5) are close to each other and form a V-shape. The lifting plate (6) is attached to the second plate (5) and is parallel to the surface of the second plate (5). The top of the second plate (5) of the previous material handling component is directly connected to the top of the first plate (4) of the next material handling component. The first direction is the direction away from the tilting bin (2). In each of the lifting plates (6), the top surface of the lifting plate (6) is inclined in the first direction, and the lifting plate (6) can move up and down along the surface of the second plate (5). When the lifting plate (6) rises, it drives the bar stock in the corresponding sub-bin to rise along the surface of the second plate (5) through its top surface. When the position of the bar stock is higher than the top of the second plate (5), the bar stock slides into the next sub-bin and finally makes the single bar stock roll out from the last sub-bin.

2. The rod-feeding device according to claim 1, characterized in that, The diameter of the bar stock is d, and the thickness of the lifting plate (6) is D, where 1.1d ≤ D ≤ 1.3d.

3. The bar feeder according to claim 1, characterized in that, The tilting compartment (2) includes a tilting compartment door (1), which can be opened when tilted by external force and closed by its own gravity.

4. The bar feeder according to any one of claims 1-3, characterized in that, Also includes: The first drive assembly is connected to each of the lifting plates (6) and is used to drive each of the lifting plates (6) to move up and down reciprocally; and, The second drive component is connected to the tilting bin (2) and is used to drive the tilting bin (2) to tilt so that the bar stock in the tilting bin (2) is laterally transferred to the stepped bin (3), and to drive the tilting bin (2) to tilt and then reset.

5. The bar feeder according to claim 4, characterized in that, The rods are spent fuel rods, and the tipping bin (2) and the stepped bin (3) are both located in a shielded room; The first drive assembly includes a first drive member and a first transmission member. The first drive member is disposed outside the shielding room, and the first transmission member is disposed inside the shielding room and connected to each of the lifting plates (6). The first drive member passes through the shielding wall of the shielding room and is connected to the first transmission member so as to drive each of the lifting plates (6) to move up and down reciprocally through the first transmission member. The second drive assembly includes a second drive member and a second transmission member (7). The second drive member is disposed outside the shielding room, and the second transmission member (7) is disposed on the stepped hopper (3) inside the shielding room and connected to the tilting hopper (2). The second drive member passes through the shielding wall of the shielding room and is connected to the second transmission member (7) so as to drive the tilting hopper (2) to tilt and reset through the second transmission member (7).

6. The bar feeder according to claim 5, characterized in that, The first driving component is detachably connected to the first transmission component via the first docking module (12); The second drive component is detachably connected to the second transmission component (7) via the second docking module (15).

7. The bar feeder according to claim 6, characterized in that, It also includes a fixing bracket; The first transmission component is mounted on the fixed bracket, and the stepped hopper (3) is detachably mounted on the fixed bracket via the first quick-release mechanism (13); The top of each of the two end plates of the stepped silo (3) is provided with a first lifting lug (14).

8. A spent fuel assembly processing system, characterized in that, include: The dismantling device is used to receive the spent fuel assembly and separate multiple spent fuel rods from the spent fuel assembly, and then transport the spent fuel rods to the rod feeding device. and, The rod feeding device according to any one of claims 1-7 is used to receive the multiple spent fuel rods, feed the multiple spent fuel rods, and finally make a single spent fuel rod roll out from the last sub-bucket of the stepped hopper (3).

9. A method for feeding bar stock, characterized in that, Using the bar stock handling apparatus according to any one of claims 1-7, the bar stock handling method includes: After receiving multiple bars, the tilting bin (2) tilts them laterally and transfers them laterally to the first sub-bin of the stepped bin (3) near the tilting bin (2). Multiple material handling components transfer the bar stock step by step from the first sub-bin closest to the flipping bin (2) to the last sub-bin furthest from the flipping bin (2), and transfer a single bar stock out of the last sub-bin.

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