A dual-station fluidized bed and gas distributor extraction device

Abstract

This utility model relates to the field of nuclear fuel element manufacturing technology and discloses a dual-station fluidized tube and gas distributor extraction device, including a fixed frame, a horizontal drive mechanism, and a lifting assembly. The fixed frame is provided with a horizontal movement space and a dual-station rotation assembly. The horizontal drive mechanism drives the lifting assembly to move horizontally within the horizontal movement space. The dual-station rotation assembly is located below the horizontal movement space. Two temporary storage fixtures of the dual-station rotation assembly are used to accommodate the extracted fluidized tube or gas distributor. The lifting assembly includes a support, a primary lifting drive mechanism, a primary lifting slide rail, a lifting frame, a secondary lifting drive mechanism, a secondary lifting slide rail, and a multi-stage telescopic arm. The support slides horizontally with the fixed frame. The dual-station fluidized tube and gas distributor extraction device provided by this utility model solves a series of problems existing in the manual hoisting of graphite parts (such as fluidized tubes and gas distributors) in high-temperature environments.

Description

Technical Field

[0001] This utility model relates to the field of nuclear fuel element manufacturing technology, specifically to a dual-station fluidization tube and gas distributor extraction device. Background Technology

[0002] High-temperature gas-cooled reactors (HTGRs), as representative of fourth-generation nuclear energy systems, possess inherent safety as their core advantage. This characteristic relies on the design of silicon carbide (SiC) coated particle fuel. Each fuel particle consists of a uranium dioxide core and multiple layers of pyrolytic carbon and silicon carbide, which can confine fission products within the particle under accident conditions. However, the preparation of this fuel involves complex processes, among which the processing of graphite components and graphite tubes becomes a key factor restricting production efficiency and safety.

[0003] Graphite components need to be disassembled and replaced in high-temperature environments. Manual operation requires waiting for the furnace to cool to room temperature, extending the production cycle. Graphite components (such as fluidizing tubes and gas distributors) require manual hoisting at high temperatures (≥400℃), which not only poses a risk of burns but also exposes personnel to graphite dust that may harm their health. Furthermore, residual radioactive materials on the surface of graphite components increase the difficulty of radiation protection. Manual operation relies on experience, and insufficient positioning accuracy of graphite components may affect the stability of subsequent coating processes. Additionally, manually transferring graphite tubes is prone to impact damage, reducing material utilization. Utility Model Content

[0004] The purpose of this invention is to provide a dual-station fluidizing tube and gas distributor extraction device to solve at least one of the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dual-station fluidized tube and gas distributor extraction device includes a fixed frame, a horizontal drive mechanism, and a lifting assembly. The fixed frame is provided with a horizontal movement space and a dual-station rotation assembly. The horizontal drive mechanism drives the lifting assembly to move horizontally within the horizontal movement space. The two temporary storage fixtures of the dual-station rotation assembly are used to accommodate the extracted fluidized tube or gas distributor.

[0007] The lifting assembly includes a bracket, a primary lifting drive mechanism, a primary lifting slide rail, a lifting frame, a secondary lifting drive mechanism, a secondary lifting slide rail, and a multi-stage telescopic arm. The bracket is horizontally slidably fitted with a fixed frame. The primary lifting drive mechanism and the primary lifting slide rail are mounted on the bracket. The primary lifting drive mechanism drives the lifting frame to move up and down along the primary lifting slide rail. The secondary lifting drive mechanism and the secondary lifting slide rail are mounted on the lifting frame. The secondary lifting drive mechanism drives the multi-stage telescopic arm to move up and down along the secondary lifting slide rail. The lower end of the multi-stage telescopic arm is provided with a fluidizing tube positioning mechanism and a gas distributor suction cup. The gas distributor suction cup is located below the fluidizing tube positioning mechanism.

[0008] In this technical solution, the horizontal drive mechanism enables horizontal driving of the lifting assembly. The lifting assembly includes a multi-stage telescopic arm, the lower end of which is equipped with a fluidizing tube positioning mechanism and a gas distributor suction cup. This simultaneously enables the horizontal movement of the fluidizing tube positioning mechanism and the gas distributor suction cup, facilitating the horizontal alignment step. Since the two temporary storage fixtures of the dual-station rotary assembly are used to accommodate the extracted fluidizing tube or gas distributor, they facilitate temporary storage of the fluidizing tube and gas distributor during the transfer step. Because the furnace body is located deep underground and the fluidizing tube is relatively high, the fluidizing tube positioning mechanism and the gas distributor suction cup need sufficient vertical lifting stroke to extract the fluidizing tube and gas distributor located inside the furnace body. In this technical solution, a primary lifting mechanism drives the lifting frame to move up and down along the primary lifting slide rail, achieving primary lifting. A secondary lifting mechanism drives the multi-stage telescopic arm to move up and down along the secondary lifting slide rail, achieving secondary lifting. This allows the overall height of the multi-stage telescopic arm to achieve two levels of lifting, thus controlling its height position. In addition, the multi-stage telescopic arm itself also has a telescopic function, which can further adjust the height position of the extraction action based on the aforementioned two levels of lifting. This allows the fluidized tube positioning mechanism and the gas distributor suction cup to successfully extract the fluidized tube and gas distributor from the furnace body, and then transfer the extracted fluidized tube and gas distributor to the temporary storage fixture through the aforementioned lifting action and horizontal movement steps.

[0009] In summary, this technical solution, by controlling the horizontal movement of the lifting components and combining multi-stage lifting with multi-stage telescopic arms, can extract fluidized pipes and gas distributors that are deep below ground level in the furnace and transfer them smoothly to temporary storage fixtures, thus solving a series of problems existing in the manual hoisting of graphite parts (such as fluidized pipes and gas distributors) in high-temperature environments.

[0010] Furthermore, to facilitate the switching of the position of the temporary storage fixtures, the dual-station rotary assembly includes a rotary drive device, a chassis, and two temporary storage fixtures. The rotary drive device drives the chassis to rotate, and the two temporary storage fixtures are mounted on the chassis. The rotary drive device is a rotary cylinder.

[0011] Furthermore, the bottom of the fixed frame is provided with a bottom space to facilitate the entry of the RGV trolley, and multiple bottom positioning female seats are provided in the middle of the bottom of the fixed frame. The bottom positioning female seats are positioned with the lifting mechanism on the RGV trolley, and the RGV trolley moves between the furnace body and the cleaning device.

[0012] In practice, after the fluidizing tube and gas distributor are transferred from the furnace body to the temporary storage fixture, the RGV trolley enters the bottom space. The lifting mechanism on the RGV trolley is positioned with the bottom positioning base, and the lifting mechanism raises the entire device. The RGV trolley then moves the entire device to the cleaning device, where the fluidizing tube and gas distributor are transferred for cleaning. After cleaning, the same steps are repeated to move the entire device closer to the furnace body, and then the cleaned fluidizing tube and gas distributor are placed back into the furnace body. The position transfer of the fluidizing tube and gas distributor in the above steps is achieved through the aforementioned horizontal and vertical movements.

[0013] The lower end of the fixed frame is provided with multiple support legs, and the lower end of each support leg is provided with a support leg positioning female seat. The support leg positioning female seat is docked and positioned with the support leg positioning male seat at the corresponding position on the ground, which can ensure a stable state during the extraction and transfer steps of the fluidizing tube and gas distributor.

[0014] Furthermore, in order to increase the lifting space, the upper end of the bracket extends beyond the upper end of the fixed frame, and the lower end of the bracket extends to a position close to the bottom of the horizontal movement space.

[0015] Furthermore, due to the complex structure of the lifting assembly, involving multi-stage lifting control, in order to ensure the smoothness and synchronization of the overall horizontal movement of the lifting assembly, the horizontal drive mechanism includes a first motor, a first vertical transmission rod, and a second vertical transmission rod. The first motor drives the main synchronous pulleys on the first and second vertical transmission rods to rotate via a main synchronous belt. The upper and lower ends of the first and second vertical transmission rods are respectively provided with an upper rear synchronous pulley and a lower rear synchronous pulley. The fixed frame is provided with an upper front synchronous pulley and a lower front synchronous pulley. An upper synchronous belt is provided between the upper rear synchronous pulley and the upper front synchronous pulley, and a lower synchronous belt is provided between the lower rear synchronous pulley and the lower front synchronous pulley. The fixed frame is provided with a lower horizontal slide rail, and the lower end of the bracket is slidably engaged with the lower horizontal slide rail. The lower end of the bracket is fixedly connected to the lower synchronous belt. The bracket is provided with a fixed seat, and the fixed seat is slidably engaged with the upper horizontal slide rail at the upper end of the fixed frame. The position of the bracket near the fixed seat is fixedly connected to the upper synchronous belt.

[0016] The lower horizontal slide rail is located inside the horizontal movement space, below the first vertical transmission rod and the second vertical transmission rod.

[0017] Furthermore, in order to better control the lifting of the support frame, the primary lifting drive mechanism includes a second motor, a gear and a vertical rack. The second motor drives the gear to rotate, and the vertical rack is mounted on the lifting frame. The gear meshes with the vertical rack.

[0018] Furthermore, to better control the lifting of the multi-stage telescopic boom, the secondary lifting drive mechanism includes a third motor, a lead screw, a lead screw nut, and a connecting seat. The third motor drives the lead screw to rotate, the lead screw nut is fixedly connected to the connecting seat, the lead screw and lead screw nut are threaded together, and the connecting seat is slidably connected to the secondary lifting slide rail. The connecting seat is equipped with a hollow rotating platform, which drives the multi-stage telescopic boom to rotate. After the gas distributor's suction cup grips the gas distributor, the hollow rotating platform drives the multi-stage telescopic boom to rotate, which can loosen the gas distributor and separate it.

[0019] Furthermore, to facilitate the removal of the fluidizing tube, the fluidizing tube positioning mechanism includes a hollow shaft and multiple friction plates. From top to bottom, the hollow shaft is provided with an upper mounting seat, an upper fixing ring, a lower mounting seat, and a lower fixing ring. Multiple cylinders are circumferentially and evenly arranged on the upper and lower mounting seats. A sliding seat is slidably connected to the hollow shaft, located above the upper mounting seat. Multiple connecting arms and hinge positions are circumferentially and evenly arranged, with the hinge positions intersecting the connecting arms. The upper ends of the piston rods of the cylinders are connected to the corresponding connecting arms. A first connecting rod, a second connecting rod, and a third connecting rod are rotatably connected to the friction plates in the vertical direction. The other end of the first connecting rod is rotatably connected to the hinge position, the other end of the second connecting rod is rotatably connected to the upper fixing ring, and the other end of the third connecting rod is rotatably connected to the lower fixing ring.

[0020] In order to improve the stability of the fluidized tube extraction state, the lower end of the first-stage arm of the multi-stage telescopic arm is provided with a fluidized tube positioning component. The outer side wall of the fluidized tube positioning component is inclined, and the lower end of the fluidized tube positioning component is connected to the upper end of the fluidized tube to achieve positioning of the fluidized tube.

[0021] Furthermore, in order to ensure the synchronous winding and unwinding of the pipeline during the extraction process, a winding device is also included. The winding device is used to wind up the pipeline of the fluidizing tube positioning mechanism and the gas distributor suction cup. The hollow shaft is connected to the interior of the multi-stage telescopic arm. The lower end of the hollow shaft is provided with a pipeline inlet, and the gas distributor suction cup is located at the lower end of the hollow shaft.

[0022] Furthermore, in order to better achieve adsorption of the gas distributor, the gas distributor suction cup has an outer surface that fits against the inner wall of the gas distributor, the lower end of the gas distributor suction cup is a suction port, and the upper end of the gas distributor suction cup has a vacuum tube interface.

[0023] The beneficial effects of this utility model are as follows: In this technical solution, the horizontal drive mechanism can achieve horizontal drive of the lifting assembly. The lifting assembly includes a multi-stage telescopic arm, and the lower end of the multi-stage telescopic arm is equipped with a fluidizing tube positioning mechanism and a gas distributor suction cup. This simultaneously enables the horizontal movement of the fluidizing tube positioning mechanism and the gas distributor suction cup, facilitating the horizontal alignment step. Since the two temporary storage fixtures of the dual-station rotary assembly are used to accommodate the extracted fluidizing tube or gas distributor, it facilitates the temporary storage of the fluidizing tube and gas distributor during the transfer step. Because the furnace body is located deep underground and the fluidizing tube is relatively high, the fluidizing tube positioning mechanism and the gas distributor suction cup need to have sufficient vertical lifting stroke to lift the fluidizing tube and gas distributor located inside the furnace body. In this technical solution, the lifting frame is driven to move up and down along the first-level lifting slide rail by the first-level lifting drive mechanism, thus achieving first-level lifting. The multi-stage telescopic arm is driven to move up and down along the second-level lifting slide rail by the second-level lifting drive mechanism, thus achieving second-level lifting. This allows the overall height position of the multi-stage telescopic arm to achieve two-level lifting, thereby controlling the height position of the multi-stage telescopic arm. In addition, the multi-stage telescopic arm itself also has a telescopic function, which can further adjust the height position of the extraction action based on the aforementioned two-level lifting. This allows the fluidized tube positioning mechanism and the gas distributor suction cup to successfully extract the fluidized tube and gas distributor from the furnace body, and then transfer the extracted fluidized tube and gas distributor to the temporary storage fixture through the aforementioned lifting action and horizontal movement steps.

[0024] In summary, this technical solution, by controlling the horizontal movement of the lifting components and combining multi-stage lifting with multi-stage telescopic arms, can extract fluidized pipes and gas distributors that are deep below ground level in the furnace and transfer them smoothly to temporary storage fixtures, thus solving a series of problems existing in the manual hoisting of graphite parts (such as fluidized pipes and gas distributors) in high-temperature environments. Attached Figure Description

[0025] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the local structure from a mid-range perspective;

[0027] Figure 3 This is a structural schematic diagram of the present invention from a second perspective;

[0028] Figure 4 for Figure 3A magnified schematic diagram of the local structure at point A;

[0029] Figure 5 This is a schematic diagram of the fluidizing tube positioning mechanism and the gas distributor suction cup in this utility model;

[0030] Figure 6 This is a structural schematic diagram of the present invention from a third-view perspective;

[0031] Figure 7 for Figure 6 A magnified view of the structure at point B in the middle;

[0032] Figure 8 for Figure 6 A magnified schematic diagram of the local structure at point C;

[0033] Figure 9 This is a schematic diagram of the fluidizing tube positioning component in this utility model;

[0034] Figure 10 This is a schematic diagram of the structure of the dual-station rotary assembly in this utility model;

[0035] Figure 11 This is a structural diagram showing the meshing state of the gear and vertical rack in this utility model.

[0036] In the diagram: 1. Fixed frame; 2. Horizontal movement space; 3. Dual-station rotating assembly; 4. Temporary storage fixture; 5. Support; 6. First-stage lifting slide rail; 6.1. First-stage slider; 7. Lifting frame; 8. Second-stage lifting slide rail; 9. Multi-stage telescopic arm; 10. Fluidized tube positioning mechanism; 11. Gas distributor suction cup; 12. Rotary cylinder; 13. Chassis; 14. Bottom space; 15. Bottom positioning female seat; 16. Support leg; 17. Support leg positioning female seat; 18. Support leg positioning male seat; 19. First motor; 20. First vertical transmission rod; 21. Second vertical transmission rod; 22. Main synchronous belt; 23. Main synchronous pulley; 24. Upper rear synchronous pulley; 25. Lower rear synchronous pulley. ; Lower front synchronous pulley 26; Upper synchronous belt 27; Lower synchronous belt 28; Lower horizontal slide rail 29; Fixed seat 30; Upper horizontal slide rail 31; Second motor 32; Vertical rack 33; Third motor 34; Lead screw 35; Connecting seat 36; Hollow rotating platform 37; Hollow shaft 38; Friction plate 39; Upper mounting seat 40; Upper fixing ring 41; Lower mounting seat 42; Lower fixing ring 43; Cylinder 44; Sliding seat 45; Connecting arm 46; Hinge position 47; First connecting rod 48; Second connecting rod 49; Third connecting rod 50; Fluidizing pipe positioning component 51; Winding device 52; Pipeline inlet 53; Gear 54. Detailed Implementation

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0038] Example 1:

[0039] like Figures 1-11 As shown, this embodiment provides a dual-station fluidized tube and gas distributor extraction device, including a fixed frame 1, a horizontal drive mechanism and a lifting assembly. The fixed frame 1 is provided with a horizontal moving space 2 and a dual-station rotating assembly 3. The horizontal moving space 2 is a channel formed in the middle of the fixed frame 1. The horizontal drive mechanism drives the lifting assembly to move horizontally within the horizontal moving space 2, that is, to move along the front and rear direction of the fixed frame 1. The dual-station rotating assembly 3 is located below the horizontal moving space 2. The two temporary storage fixtures 4 of the dual-station rotating assembly 3 are used to accommodate the extracted fluidized tube or gas distributor.

[0040] The lifting assembly includes a bracket 5, a primary lifting drive mechanism, a primary lifting slide rail 6, a lifting frame 7, a secondary lifting drive mechanism, a secondary lifting slide rail 8, and a multi-stage telescopic arm 9. The bracket 5 is horizontally slidably coupled to the fixed frame 1. The primary lifting drive mechanism and the primary lifting slide rail 6 are mounted on the bracket 5. The primary lifting drive mechanism drives the lifting frame 7 to move up and down along the primary lifting slide rail 6. Specifically, the lifting frame 7 is equipped with a primary slider 6.1 that slides with the primary lifting slide rail 6. The secondary lifting drive mechanism and the secondary lifting slide rail 8 are mounted on the lifting frame 7. The secondary lifting drive mechanism drives the multi-stage telescopic arm 9 to move up and down along the secondary lifting slide rail 8. Specifically, the multi-stage telescopic arm 9 is equipped with a secondary slider that slides with the secondary lifting slide rail 8. The lower end of the multi-stage telescopic arm 9 is equipped with a fluidizing tube positioning mechanism 10 and a gas distributor suction cup 11. The gas distributor suction cup 11 is located below the fluidizing tube positioning mechanism 10. It should be noted that the telescopic principle of the multi-stage telescopic arm 9 is the same as the working principle of existing crane telescopic arms and belongs to existing technology, so it will not be described in detail here.

[0041] In this technical solution, the horizontal drive mechanism enables horizontal driving of the lifting assembly. The lifting assembly includes a multi-stage telescopic arm 9, the lower end of which is equipped with a fluidizing tube positioning mechanism 10 and a gas distributor suction cup 11. Simultaneously, the horizontal movement of the fluidizing tube positioning mechanism 10 and the gas distributor suction cup 11 is also achieved, facilitating the horizontal alignment step. Since the two temporary storage fixtures 4 of the dual-station rotating assembly 3 are used to accommodate the extracted fluidizing tube or gas distributor, they facilitate temporary storage of the fluidizing tube and gas distributor during the transfer step. Because the furnace body is located deep underground and the fluidizing tube is relatively high, the fluidizing tube positioning mechanism 10 and the gas distributor suction cup 11 need sufficient vertical lifting stroke to extract the fluidizing tube and gas distributor located inside the furnace body. In this technical solution, the lifting frame 7 is driven to move up and down along the first-level lifting slide rail 6 by the first-level lifting drive mechanism, thus achieving first-level lifting. The multi-stage telescopic arm 9 is driven to move up and down along the second-level lifting slide rail 8 by the second-level lifting drive mechanism, thus achieving second-level lifting. This allows the overall height position of the multi-stage telescopic arm 9 to achieve two-level lifting, thereby controlling the height position of the multi-stage telescopic arm 9. In addition, the multi-stage telescopic arm 9 itself also has a telescopic function, which can further adjust the height position of the extraction action based on the aforementioned two-level lifting. This allows the fluidizing tube positioning mechanism 10 and the gas distributor suction cup 11 to successfully extract the fluidizing tube and gas distributor from the furnace body, and then transfer the extracted fluidizing tube and gas distributor to the temporary storage fixture 4 through the aforementioned lifting action and horizontal movement steps.

[0042] In summary, this technical solution, by controlling the horizontal movement of the lifting components and combining multi-stage lifting with multi-stage telescopic arm 9, can extract the fluidizing pipes and gas distributors that are deep below ground level in the furnace and transfer them smoothly to the temporary storage fixture 4, thus solving a series of problems existing in the manual hoisting of graphite parts (such as fluidizing pipes and gas distributors) in high-temperature environments.

[0043] Example 2:

[0044] This embodiment is an optimization based on the above embodiment 1.

[0045] like Figure 10 As shown, to facilitate the switching of the position of the temporary storage fixture 4, the dual-station rotary assembly 3 includes a rotary drive device, a chassis 13, and two temporary storage fixtures 4. The rotary drive device drives the chassis 13 to rotate, and the two temporary storage fixtures 4 are mounted on the chassis 13. The rotary drive device is a rotary cylinder 12.

[0046] Example 3:

[0047] This embodiment is an optimization based on the above embodiment 1.

[0048] like Figure 6 , Figure 7As shown, the bottom of the fixed frame 1 is provided with a bottom space 14 to facilitate the entry of the RGV trolley. Multiple bottom positioning female seats 15 are provided in the middle of the bottom of the fixed frame 1. The bottom positioning female seats 15 are positioned with the positioning male seats on the lifting mechanism on the RGV trolley. The RGV trolley moves between the furnace body and the cleaning device.

[0049] In practice, after the fluidizing tube and gas distributor are transferred from the furnace body to the temporary storage fixture 4, the RGV trolley enters the bottom space 14. The lifting mechanism on the RGV trolley is positioned with the bottom positioning base 15, and the lifting mechanism raises the entire device. The RGV trolley then moves the entire device to the cleaning device, where the fluidizing tube and gas distributor are transferred for cleaning. After cleaning, the same steps are repeated to move the entire device closer to the furnace body, and then the cleaned fluidizing tube and gas distributor are placed back into the furnace body. The position transfer of the fluidizing tube and gas distributor in the above steps is achieved through the aforementioned horizontal and vertical movements.

[0050] like Figure 8 As shown, the lower end of the fixed frame 1 is provided with multiple support legs 16, and the lower end of the support legs 16 is provided with support leg positioning female seat 17. The support leg positioning female seat 17 is docked and positioned with the support leg positioning male seat 18 at the corresponding position on the ground, which can ensure a stable state during the extraction and transfer steps of the fluidizing tube and gas distributor.

[0051] Example 4:

[0052] This embodiment is an optimization based on the above embodiment 1.

[0053] To increase the lifting space, the upper end of the bracket 5 extends beyond the upper end of the fixed frame 1, and the lower end of the bracket 5 extends to a position close to the bottom of the horizontal moving space 2.

[0054] Example 5:

[0055] This embodiment is an optimization based on the above embodiment 1.

[0056] like Figure 1 , Figure 2As shown, due to the complex structure of the lifting assembly, involving multi-stage lifting control, in order to ensure the smoothness and synchronization of the overall horizontal movement of the lifting assembly, the horizontal drive mechanism includes a first motor 19, a first vertical transmission rod 20, and a second vertical transmission rod 21. The first motor 19 drives the main synchronous pulleys 23 on the first and second vertical transmission rods 20 and 21 to rotate via the main synchronous belt 22. The upper and lower ends of the first and second vertical transmission rods 20 and 21 are respectively provided with an upper rear synchronous pulley 24 and a lower rear synchronous pulley 25. The fixed frame 1 The frame 1 is provided with an upper front synchronous pulley and a lower front synchronous pulley 26. An upper synchronous belt 27 is provided between the upper rear synchronous pulley 24 and the upper front synchronous pulley. A lower synchronous belt 28 is provided between the lower rear synchronous pulley 25 and the lower front synchronous pulley 26. A lower horizontal slide rail 29 is provided on the fixed frame 1. The lower end of the bracket 5 is slidably engaged with the lower horizontal slide rail 29. The lower end of the bracket 5 is fixedly connected to the lower synchronous belt 28. A fixed seat 30 is provided on the bracket 5. The fixed seat 30 is slidably engaged with the upper horizontal slide rail 31 at the upper end of the fixed frame 1. The position of the bracket 5 near the fixed seat 30 is fixedly connected to the upper synchronous belt 27.

[0057] The lower horizontal slide rail 29 is located inside the horizontal moving space 2, and is located below the first vertical transmission rod 20 and the second vertical transmission rod 21.

[0058] Example 6:

[0059] This embodiment is an optimization based on the above embodiment 1.

[0060] like Figure 11 As shown, in order to better control the lifting of the support 5, the first-stage lifting drive mechanism includes a second motor 32, a gear 54 and a vertical rack 33. The second motor 32 drives the gear 54 to rotate, and the vertical rack 33 is set on the lifting frame 7. The gear 54 meshes with the vertical rack 33.

[0061] Example 7:

[0062] This embodiment is an optimization based on the above embodiment 1.

[0063] like Figure 3 As shown, to better control the lifting of the multi-stage telescopic arm 9, the secondary lifting drive mechanism includes a third motor 34, a lead screw 35, a lead screw nut, and a connecting seat 36. The third motor 34 drives the lead screw 35 to rotate. The lead screw nut is fixedly connected to the connecting seat 36, with the lead screw 35 and lead screw nut threaded together. The connecting seat 36 is slidably connected to the secondary lifting slide rail 8. A hollow rotating platform 37 is provided on the connecting seat 36, which drives the multi-stage telescopic arm 9 to rotate, and the two are coaxially arranged. After the gas distributor suction cup 11 clamps the gas distributor, the hollow rotating platform 37 drives the multi-stage telescopic arm 9 to rotate, which can loosen the gas distributor and separate it.

[0064] Example 8:

[0065] This embodiment is an optimization based on the above embodiment 1.

[0066] like Figure 5 As shown, in order to facilitate the removal of the fluidizing tube, the fluidizing tube positioning mechanism 10 includes a hollow shaft 38 and multiple friction plates 39. The hollow shaft 38 is provided with an upper mounting seat 40, an upper fixing ring 41, a lower mounting seat 42 and a lower fixing ring 43 from top to bottom. Multiple cylinders 44 are evenly arranged on the upper mounting seat 40 and the lower mounting seat 42. A sliding seat 45 is slidably connected to the hollow shaft 38. The sliding seat 45 is located above the upper mounting seat 40. Multiple connecting arms 46 and hinge positions 47 are evenly arranged on the sliding seat 45. The hinge positions 47 are intersected with the connecting arms 46. The upper end of the piston rod of the cylinder 44 is connected to the corresponding connecting arm 46. The friction plates 39 are rotatably connected to a first connecting rod 48, a second connecting rod 49 and a third connecting rod 50 in the vertical direction. The other end of the first connecting rod 48 is rotatably connected to the hinge position 47. The other end of the second connecting rod 49 is rotatably connected to the upper fixing ring 41. The other end of the third connecting rod 50 is rotatably connected to the lower fixing ring 43.

[0067] In order to improve the stability of the fluidized tube extraction state, the lower end of the first-stage arm of the multi-stage telescopic arm 9 is provided with a fluidized tube positioning component 51. The outer side wall of the fluidized tube positioning component 51 is inclined, and the lower end of the fluidized tube positioning component 51 is connected with the upper end of the fluidized tube to achieve positioning of the fluidized tube.

[0068] Example 9:

[0069] This embodiment is an optimization based on the above embodiment 1.

[0070] like Figure 3 As shown, in order to ensure the synchronous winding and unwinding of the pipeline during the extraction process, a winding device 52 is also included. The winding device 52 is used to wind up the pipeline of the fluidizing tube positioning mechanism 10 and the gas distributor suction cup 11. The hollow shaft 38 is internally connected to the multi-stage telescopic arm 9, as shown. Figure 5 As shown, the lower end of the hollow shaft 38 is provided with a pipeline inlet 53, and the gas distributor suction cup 11 is located at the lower end of the hollow shaft 38.

[0071] Example 10:

[0072] This embodiment is an optimization based on the above embodiment 1.

[0073] In order to better achieve adsorption of the gas distributor, the gas distributor suction cup 11 has an outer surface that fits against the inner wall of the gas distributor. The lower end of the gas distributor suction cup 11 is the suction port, and the upper end of the gas distributor suction cup 11 has a vacuum tube interface.

[0074] This extraction device is a specialized piece of equipment for coating cleaning and automated transfer projects. Its purpose is to extract graphite fluidized bed tubes and gas distributors from dual-station graphite components. The fixed frame 1 is constructed from high-temperature resistant aluminum profiles, allowing for rapid assembly and disassembly to adapt to dynamic adjustments. Utilizing high-temperature resistant materials and insulation, the equipment ensures continuous operation above 400°C, eliminating the need for manual intervention. It can be integrated with force control sensors to achieve millimeter-level positioning and non-destructive gripping of graphite components, improving process consistency. Through a DCS system, it can be linked with integrated devices, temporary storage devices, and cleaning devices to form a fully automated closed loop, reducing human error. Single-batch processing time is significantly reduced, greatly increasing production capacity. It eliminates the risks of manual high-temperature operation, reducing the probability of radioactive material exposure. It also reduces equipment downtime and extends the lifespan of graphite components.

[0075] The successful development of this device will be widely applied to high-temperature gas-cooled reactor fuel element production lines, especially suitable for the large-scale production of silicon carbide-coated pellet fuel. With the promotion of fourth-generation nuclear power technology, its market demand will continue to grow. Automation upgrades will drive the transformation of my country's nuclear fuel element manufacturing technology towards intelligence and efficiency, laying a solid foundation for the commercial application of high-temperature gas-cooled reactors.

[0076] Automation in nuclear fuel element production is an inevitable trend for improving the safety and economy of nuclear power. This invention, by solving the technical bottleneck in graphite element processing, provides key support for the large-scale production of fuel elements for high-temperature gas-cooled reactors, and has significant social value and economic benefits.

[0077] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A twin-station fluidized tube and gas distributor extraction apparatus, characterized by: It includes a fixed frame, a horizontal drive mechanism, and a lifting assembly. The fixed frame is provided with a horizontal movement space and a dual-station rotary assembly. The horizontal drive mechanism drives the lifting assembly to move horizontally within the horizontal movement space. The two temporary storage fixtures of the dual-station rotary assembly are used to accommodate the extracted fluidizing tubes or gas distributors. The lifting assembly includes a bracket, a primary lifting drive mechanism, a primary lifting slide rail, a lifting frame, a secondary lifting drive mechanism, a secondary lifting slide rail, and a multi-stage telescopic arm. The bracket is horizontally slidably fitted with a fixed frame. The primary lifting drive mechanism and the primary lifting slide rail are mounted on the bracket. The primary lifting drive mechanism drives the lifting frame to move up and down along the primary lifting slide rail. The secondary lifting drive mechanism and the secondary lifting slide rail are mounted on the lifting frame. The secondary lifting drive mechanism drives the multi-stage telescopic arm to move up and down along the secondary lifting slide rail. The lower end of the multi-stage telescopic arm is provided with a fluidizing tube positioning mechanism and a gas distributor suction cup. The gas distributor suction cup is located below the fluidizing tube positioning mechanism.

2. A twin station fluidized tube and gas distributor extraction apparatus according to claim 1, wherein: The dual-station rotary assembly includes a rotary drive device, a chassis, and two temporary storage fixtures. The rotary drive device drives the chassis to rotate, and the two temporary storage fixtures are mounted on the chassis.

3. A twin position fluidized tube and gas distributor extraction apparatus as defined in claim 1, wherein: The bottom of the fixed frame is provided with a bottom space to facilitate the entry of the RGV trolley. The bottom of the fixed frame is provided with multiple bottom positioning female seats in the middle. The bottom positioning female seats are positioned with the lifting mechanism on the RGV trolley. The RGV trolley moves between the furnace body and the cleaning device. The lower end of the fixed frame is provided with multiple support legs, and the lower end of each support leg is provided with a support leg positioning female seat. The support leg positioning female seat is docked and positioned with a support leg positioning male seat at a corresponding position on the ground.

4. A twin position fluidized tube and gas distributor extraction apparatus as defined in claim 1, wherein: The upper end of the bracket extends beyond the upper end of the fixed frame, and the lower end of the bracket extends to a position close to the bottom of the horizontal movement space.

5. The dual-station fluidizing tube and gas distributor extraction device according to claim 1, characterized in that: The horizontal drive mechanism includes a first motor, a first vertical transmission rod, and a second vertical transmission rod. The first motor drives the main synchronous pulleys on the first and second vertical transmission rods to rotate via a main synchronous belt. The upper and lower ends of the first and second vertical transmission rods are respectively provided with an upper rear synchronous pulley and a lower rear synchronous pulley. The fixed frame is provided with an upper front synchronous pulley and a lower front synchronous pulley. An upper synchronous belt is provided between the upper rear synchronous pulley and the upper front synchronous pulley, and a lower synchronous belt is provided between the lower rear synchronous pulley and the lower front synchronous pulley. The fixed frame is provided with a lower horizontal slide rail. The lower end of the bracket is slidably engaged with the lower horizontal slide rail. The lower end of the bracket is fixedly connected to the lower synchronous belt. The bracket is provided with a fixed seat. The fixed seat is slidably engaged with the upper horizontal slide rail at the upper end of the fixed frame. The position of the bracket near the fixed seat is fixedly connected to the upper synchronous belt.

6. The dual-station fluidizing tube and gas distributor extraction device according to claim 1, characterized in that: The primary lifting drive mechanism includes a second motor, a gear, and a vertical rack. The second motor drives the gear to rotate, and the vertical rack is mounted on the lifting frame. The gear meshes with the vertical rack.

7. The dual-station fluidizing tube and gas distributor extraction device according to claim 1, characterized in that: The secondary lifting drive mechanism includes a third motor, a lead screw, a lead screw nut, and a connecting seat. The third motor drives the lead screw to rotate. The lead screw nut is fixedly connected to the connecting seat. The lead screw and lead screw nut are threaded together. The connecting seat is slidably connected to the secondary lifting slide rail. A hollow rotating platform is provided on the connecting seat. The hollow rotating platform drives the multi-stage telescopic arm to rotate.

8. The dual-station fluidizing tube and gas distributor extraction device according to claim 1, characterized in that: The fluidizing tube positioning mechanism includes a hollow shaft and multiple friction plates. From top to bottom, the hollow shaft is provided with an upper mounting base, an upper fixing ring, a lower mounting base, and a lower fixing ring. Multiple cylinders are circumferentially and evenly arranged on the upper and lower mounting bases. A sliding seat is slidably connected to the hollow shaft, located above the upper mounting base. Multiple connecting arms and hinge positions are circumferentially and evenly arranged on the sliding seat. The hinge positions intersect with the connecting arms. The upper ends of the piston rods of the cylinders are connected to the corresponding connecting arms. A first connecting rod, a second connecting rod, and a third connecting rod are rotatably connected to the friction plates in the vertical direction. The other end of the first connecting rod is rotatably connected to the hinge position, the other end of the second connecting rod is rotatably connected to the upper fixing ring, and the other end of the third connecting rod is rotatably connected to the lower fixing ring. The lower end of the first stage of the multi-stage telescopic arm is provided with a fluidizing tube positioning component. The outer wall of the fluidizing tube positioning component is inclined. The lower end of the fluidizing tube positioning component is connected to the upper end of the fluidizing tube to achieve positioning of the fluidizing tube.

9. The dual-station fluidizing tube and gas distributor extraction device according to claim 8, characterized in that: It also includes a winding device for winding up the pipelines of the fluidizing tube positioning mechanism and the gas distributor suction cup. The hollow shaft is internally connected to the multi-stage telescopic arm. The lower end of the hollow shaft is provided with a pipeline inlet, and the gas distributor suction cup is located at the lower end of the hollow shaft.

10. The dual-station fluidizing tube and gas distributor extraction device according to claim 1, characterized in that: The gas distributor suction cup has an outer surface that fits against the inner wall of the gas distributor. The lower end of the gas distributor suction cup is a suction port, and the upper end of the gas distributor suction cup has a vacuum tube interface.

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