Modular transport structure for a nuclear reactor
By designing a modular transport structure and utilizing the combination of limiting modules and spiral guide channels, the stability problem during the transfer of liquid molten salt reactor irradiation chambers was solved, enabling stable transfer in deeper reactors.
Patent Information
- Application Number
- CN202610561238.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-24
Smart Images
Figure CN122455421A_ABST
Abstract
Description
Technical Field
[0001] This invention specifically relates to a modular transport structure for reactors. Background Technology
[0002] In reactors, material transport is unavoidable, especially in test reactors where irradiated samples need to be moved in and out of the irradiation area of the reactor core. Generally, material test reactors (such as the JMTR) have a water tank structure, and the transfer of irradiated samples is carried out underwater. Specialized grippers are used to manually grasp the grippers of the irradiation chamber, and then the samples are lifted manually or by crane. Sodium-cooled fast reactors (experimental reactors), exemplified by the Japanese "Joyo" reactor, use a fuel rod refueling mechanism for the transfer of irradiated samples. In MSREs, long-handled tools are used for the manual transfer of irradiated samples.
[0003] Given the current transfer structure and methods, when transferring irradiation chambers in a liquid molten salt reactor, the existing refueling mode using a grab hoist is no longer applicable due to the depth of the liquid molten salt reactor and the absence of a water pool. If multiple refueling mechanisms are forcibly set up in series for refueling, it is difficult to guarantee the stability of refueling in the transition area between two adjacent refueling mechanisms, and the irradiation transfer requirements of the liquid molten salt reactor cannot be met. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the poor stability of the prior art in the process of transferring liquid molten salt reactors through the irradiation chamber, especially the poor transfer stability at the connection of the refueling mechanisms in series, and to provide a modular transport structure for reactors.
[0005] The present invention solves the above-mentioned technical problems through the following technical solution:
[0006] A modular transport structure for a reactor, the modular transport structure for transporting an irradiation chamber, the modular transport structure for a reactor comprising:
[0007] The transfer unit includes a drive module, a lifting module, and a limiting module. The output shaft of the drive module is connected to the lifting module and the limiting module respectively. The limiting module and the lifting module are stacked sequentially along the lifting direction of the lifting module. Both the lifting module and the limiting module are provided with through holes and are coaxially arranged. The irradiation chamber passes through the through holes. The irradiation chamber is driven by the drive module and the lifting module and moves up and down from the through holes along the lifting direction of the lifting module. When the end of the irradiation chamber passes through the lifting module and the limiting module in sequence and extends out of the transfer unit, the limiting module is used to limit the relative position of the irradiation chamber along the lifting direction of the lifting module.
[0008] The transfer section is provided in multiple ways, and the multiple transfer sections are arranged sequentially at intervals along the lifting direction of the lifting module. The through holes of the lifting module and the limiting module between two adjacent transfer sections are coaxially arranged. When the end of the irradiation chamber extends from one of the transfer sections to another transfer section, the limiting module restricts the relative position of the irradiation chamber along the lifting direction of the lifting module. When the irradiation chamber extending from one of the transfer sections at least partially contacts and captures the lifting module of the other transfer section, the limiting module of the transfer section used to restrict the relative position of the irradiation chamber releases the irradiation chamber.
[0009] In this scheme, by setting up a transfer unit and stacking the lifting and limiting modules, compared to setting the lifting and limiting modules side by side, the space occupied by the transfer unit can be reduced. This provides a basis for modularly setting up more transfer units within a limited space. At the same time, the limiting modules restrict the relative position of the irradiation chamber along the lifting direction, preventing the irradiation chamber from falling during the lifting process and ensuring the stability and reliability of the transfer. Furthermore, based on the limiting modules in the transfer unit, several transfer units can be modularly combined according to the actual depth of the reactor, thereby meeting the needs of transferring irradiation chambers in deeper reactors. Especially when the irradiation chamber transitions from one transfer unit to another, the limiting modules ensure that the relative position restriction is released only when the irradiation chamber is captured by another transfer unit, effectively ensuring the stability of the connection points of the series-connected transfer units during the transfer of the irradiation chamber when multiple transfer units are modularly set up.
[0010] Preferably, the lifting module includes a guide tube, a guide sleeve, a spiral structure, a driven gear, and a driving gear. The guide tube, guide sleeve, spiral structure, and driven gear are coaxially arranged. The spiral structure is sleeved on the outer periphery of the guide sleeve, and the guide tube is sleeved on the outer periphery of the spiral structure. The driven gear is located on the outer edge of the guide tube and meshes with the driving gear. The ends of the guide tube, spiral structure, and driven gear are located on the same horizontal plane. The guide sleeve extends toward the limiting module. The spiral structure is connected to the guide tube and rotates around the guide sleeve following the guide tube. The driving gear is coaxially arranged with the output shaft of the drive module. A lifting lug protrudes from the outer surface of the irradiation chamber. A guide groove is formed on the guide sleeve, extending along the lifting direction of the lifting module. The lifting lug slides in the guide groove and is embedded in the spiral gap of the spiral structure.
[0011] In this scheme, the above-mentioned setup utilizes a spiral structure and guide groove to drive the irradiation chamber with lifting lugs to rise and fall while the spiral structure rotates. During the rising and falling process, the irradiation chamber is guided by the guide sleeve and guide groove. Furthermore, due to the spiral gap itself, the irradiation chamber with lifting lugs is raised and lowered more smoothly in cooperation with the guide groove, thus avoiding the negative impact of rapid ascent or descent when using a hoisting structure.
[0012] Preferably, the lifting module further includes guide rods, and multiple guide rods are provided and located on the outer periphery of the spiral structure. The guide rods extend from the end of the guide tube along the lifting direction of the lifting module to the end of the guide sleeve away from the limiting module.
[0013] In this scheme, the above-mentioned setup utilizes guide rods to prevent the irradiation chamber from deviating from the spiral structure and extending out of it.
[0014] Preferably, the limiting module includes a limiting seat, a rotating seat, a driven rack, and a limiting drive gear. The limiting seat has a backstop structure and channels spaced apart from the backstop structure along the circumferential direction of the lifting module. The through hole of the limiting module is located at the axis of the limiting seat. The rotating seat is sleeved on the outer circumference of the limiting seat. The driven rack is located on the outer edge of the rotating seat. The driven rack extends around the circumference of the rotating seat and meshes with the limiting drive gear. The limiting drive gear is coaxially arranged with the output shaft of the drive module. When the irradiation chamber is lifted along the lifting direction of the lifting module, the limiting drive gear drives the rotating seat to rotate, and the rotating seat drives the limiting seat to rotate, so that the backstop structure is connected to the guide groove. When the irradiation chamber is lowered along the lifting direction of the lifting module, the limiting drive gear drives the rotating seat to rotate, and the rotating seat drives the limiting seat to rotate in reverse, so that the channels are connected to the guide groove.
[0015] In this scheme, the aforementioned configuration allows the anti-reverse structure to rotate and align with the guide slot during irradiation chamber lifting, thereby enabling the irradiation chamber to rise and engage with the anti-reverse structure to restrict the relative position in the lifting direction. Conversely, during irradiation chamber descent, the channel is rotated to align with the guide slot, allowing the irradiation chamber to continue descending. The restriction of the relative position in the lifting direction is achieved by utilizing the limiting seat's own structure, such as its end face or the anti-reverse structure, in conjunction with the irradiation chamber's lifting lugs.
[0016] Preferably, the backstop structure includes a through groove, a backstop member, and a torsion spring. The through groove is arranged along the lifting direction of the lifting module. When the irradiation chamber is lifted along the lifting direction of the lifting module, the through groove is connected to the guide groove. The backstop member is arranged on opposite sides of the through groove and is inclined toward the inside of the through groove. The torsion spring is used to provide elastic force for the backstop member to always be inclined toward the inside of the through groove.
[0017] In this scheme, the above-mentioned arrangement is used to restrict the relative position of the irradiation chamber along the lifting direction by using a backstop that abuts against the lifting lugs of the irradiation chamber.
[0018] Preferably, the limiting seat is further provided with a first limiting block and a second limiting block that are offset from each other. The transfer part is provided with a first limiting groove corresponding to the first limiting block, and the rotating seat is provided with a second limiting groove corresponding to the second limiting block. The first limiting block is located above the second limiting block. When the irradiation chamber is lifted along the lifting direction of the lifting module, the rotating seat drives the limiting seat to rotate and abuts against the end of the first limiting groove through the first limiting block to keep the through groove of the anti-reverse structure corresponding to the guide groove.
[0019] When the irradiation chamber descends along the lifting direction of the lifting module, the rotating seat drives the limiting seat to rotate and abuts against the end of the second limiting groove through the second limiting block to keep the channel of the limiting seat corresponding to the guide groove.
[0020] In this solution, the above-mentioned settings enable the rotating seat to drive the limiting seat to rotate, thereby guiding the channel or the normally corresponding guide groove of the backstop structure on the limiting seat.
[0021] Preferably, the ends of the first limiting groove and the second limiting groove are further provided with spring plungers. When the first limiting block abuts against the first limiting groove, or when the second limiting block abuts against the second limiting groove, the spring plungers provide a tendency for the driven rack on the rotating seat to maintain engagement with the limiting drive gear.
[0022] When the rotating seat drives the limiting seat to rotate and makes the through groove correspond to the guide groove or the channel correspond to the guide groove, the spring plunger is used to absorb the force of the limiting drive gear driving the driven rack and the rotating seat to continue rotating and to keep the through groove corresponding to the guide groove or the channel corresponding to the guide groove;
[0023] There are two second limiting blocks, and the central angle between the two second limiting blocks is 180°. Correspondingly, there are two second limiting grooves.
[0024] In this design, the aforementioned configuration ensures that the driving gear and driven rack maintain engagement via a spring plunger, facilitating timely reset during reverse rotation. Furthermore, the spring plunger reduces the force transmitted to the limit seat, ensuring stable relative position after the limit seat is switched into place. Additionally, the inclusion of two second limit blocks ensures more even force distribution on the limit seat during rotation, resulting in improved rotational reliability.
[0025] Preferably, the output shaft of the drive module is fitted with an oil-free bushing on the surface that contacts the limiting drive gear, and the limiting drive gear is driven and rotated by the oil-free bushing.
[0026] In this solution, the above settings are used to reduce the torque transmitted to the limiting drive gear and driven rack when the output shaft drives the limiting drive gear and the limiting seat rotates into place. This reduces the torque transmitted to the rotating seat and the limiting seat, thus preventing the limiting seat from continuing to rotate and the channel or backstop structure from not corresponding to the guide groove.
[0027] Preferably, the transfer unit includes a top plate, a partition plate, and a bottom plate, the lifting module is embedded between the bottom plate and the partition plate, and the limiting module is embedded between the top plate and the partition plate.
[0028] In this solution, the above-mentioned configuration enables the transfer unit to support the lifting module and the limiting module, and the partition separates the lifting module and the limiting module to prevent them from interfering with each other.
[0029] Preferably, the drive module includes a motor located below the base plate and arranged side by side with the lifting module. Along the lifting direction of the lifting module, the extension dimension of the drive module is smaller than the extension dimension of the lifting module.
[0030] In this solution, the above-mentioned settings reduce the space occupied by the drive module and avoid the situation where the drive module is located above the top plate, making it impossible to modularly set another transfer unit above the transfer unit.
[0031] Preferably, the end of the lug that abuts against the spiral structure is provided with a slope, and the slope is inclined in the same direction as the spiral inclination direction of the spiral structure.
[0032] In this scheme, a slope is designed to facilitate the rapid and stable capture of the irradiation chamber by the spiral structure.
[0033] The positive and progressive effects of this invention are as follows: By setting up a transfer unit and stacking the lifting module and the limiting module, compared to setting the lifting module and the limiting module side by side, this invention can reduce the space occupied by the transfer unit. This smaller space requirement provides a basis for modularly setting up more transfer units within a limited space. Simultaneously, the limiting module restricts the relative position of the irradiation chamber along the lifting direction, preventing the irradiation chamber from falling during lifting and ensuring the stability and reliability of the transfer. Furthermore, based on the limiting module in the transfer unit, several transfer units can be modularly combined according to the actual depth of the reactor, thereby meeting the needs of transferring irradiation chambers in deeper reactors. Especially when the irradiation chamber transitions from one transfer unit to another, the limiting module ensures that the restriction on its relative position is released only when the irradiation chamber is captured by another transfer unit, effectively ensuring the stability of the connection points of the series-connected transfer units during the transfer of the irradiation chamber when multiple transfer units are modularly set up. Attached Figure Description
[0034] Figure 1 This is a diagram showing the positional relationship between the transfer unit and the irradiation chamber in a preferred embodiment of the present invention.
[0035] Figure 2 This is a schematic diagram of the transfer section according to a preferred embodiment of the present invention.
[0036] Figure 3 This is a diagram showing the positional relationship between the lug and the spiral structure in a preferred embodiment of the present invention.
[0037] Figure 4 This is a perspective view of an irradiation chamber according to a preferred embodiment of the present invention.
[0038] Figure 5 This is a diagram showing the positional relationship between the guide tube and the guide sleeve according to a preferred embodiment of the present invention.
[0039] Figure 6 This is a diagram showing the positional relationship between the limiting seat and the rotating seat in a preferred embodiment of the present invention.
[0040] Figure 7 This is a diagram showing the positional relationship between the first limiting block and the second limiting block according to a preferred embodiment of the present invention.
[0041] Figure 8 This is a schematic diagram of the guide groove according to a preferred embodiment of the present invention.
[0042] Figure 9 This is a diagram showing the positional relationship between the guide rod and the spiral structure in a preferred embodiment of the present invention.
[0043] Figure 10 This is a schematic diagram of the structure of the second limiting block and the second limiting groove according to a preferred embodiment of the present invention.
[0044] Explanation of reference numerals in the attached figures:
[0045] Transit Department 1
[0046] Driver Module 11
[0047] Lifting Module 12
[0048] Guide tube 121
[0049] Guide sleeve 122
[0050] Guide groove 1221
[0051] End ring 1222
[0052] Spiral structure 123
[0053] Driven gear 124
[0054] Power drive gear 125
[0055] Guide rod 126
[0056] Limit module 13
[0057] Limit seat 131
[0058] Rotating seat 132
[0059] Second limiting groove 1321
[0060] Driven rack 133
[0061] Limiting drive gear 134
[0062] 135 anti-reverse structure
[0063] Through slot 1351
[0064] Backstop 1352
[0065] Torsion spring 1353
[0066] Groove 1354
[0067] Channel 136
[0068] First limiting block 137
[0069] Second limiting block 138
[0070] Through hole 14
[0071] First limiting groove 15
[0072] Spring plunger 16
[0073] Top plate 17
[0074] partition 18
[0075] Base plate 19
[0076] Irradiation chamber 100
[0077] Hanging Ear 101
[0078] Slope 102 Detailed Implementation
[0079] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.
[0080] This embodiment provides a modular transport structure for a reactor, the specific structure of which is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the modular transport structure for the reactor is used to transfer the irradiation chamber 100. The modular transport structure for the reactor includes:
[0081] The transfer unit 1 includes a drive module 11, a lifting module 12, and a limiting module 13. The output shaft of the drive module 11 is connected to the lifting module 12 and the limiting module 13 respectively. The limiting module 13 and the lifting module 12 are stacked sequentially along the lifting direction of the lifting module 12. Both the lifting module 12 and the limiting module 13 are provided with through holes 14 and are coaxially arranged. The irradiation chamber 100 passes through the through hole 14. The irradiation chamber 100 is driven by the drive module 11 and the lifting module 12 and moves up and down from the through hole 14 along the lifting direction of the lifting module 12. When the end of the irradiation chamber 100 passes through the lifting module 12 and the limiting module 13 in sequence and extends out of the transfer unit 1, the limiting module 13 is used to limit the relative position of the irradiation chamber 100 along the lifting direction of the lifting module 12.
[0082] Multiple transfer units 1 are provided, and the multiple transfer units 1 are arranged sequentially at intervals along the lifting direction of the lifting module 12. The through holes 14 of the lifting module 12 and the limiting module 13 between two adjacent transfer units 1 are coaxially arranged. When the end of the irradiation chamber 100 extends from one of the transfer units 1 to another transfer unit 1, the limiting module 13 restricts the relative position of the irradiation chamber 100 along the lifting direction of the lifting module 12. When the irradiation chamber 100 extending from one of the transfer units 1 at least partially contacts and captures the lifting module 12 of the other transfer unit 1, the limiting module 13 of the transfer unit 1 used to restrict the relative position of the irradiation chamber 100 releases the irradiation chamber 100.
[0083] Specifically, the limiting module 13 is disposed within the transfer section 1, and one end of the lifting module 12 is located within the transfer section 1, while the other end extends out of the transfer section 1 to capture the irradiation chamber 100. The lifting module 12 and the limiting module 13 are coaxially provided with a through hole 14 to accommodate the irradiation chamber 100. Both the limiting module 13 and the lifting module 12 are driven by the drive module 11. Compared to the limiting module 13 and the lifting module 12 being driven by their respective independent drive structures, this configuration has higher integration, reduces the number of drive structures, and thus reduces the space occupied by the transfer section 1 within the reactor. In this embodiment, the lifting module 12 and the limiting module 13 are stacked along the lifting direction, with the limiting module 13 located above the lifting module 12. Compared to the lifting module 12 and the limiting module 13 being arranged side-by-side, this reduces the space occupied by the transfer section 1, thus providing a basis for modularly configuring more transfer sections 1 within a limited space. The lifting module 12 is used to drive the irradiation chamber 100 to move up and down along the lifting direction from the through hole 14. Its structure can be that the gripper holds the outer surface of the irradiation chamber 100 and the gripper is driven to move up and down by a conveyor belt or synchronous belt. The limiting module 13 is used to limit the relative position of the irradiation chamber 100 along the lifting direction when it extends out of the transfer part 1. Its structure can be that a telescopic push rod abuts against the outer surface of the irradiation chamber 100 to limit the position.
[0084] Meanwhile, the transfer unit 1 with the limit module 13 can restrict the relative position of the irradiation chamber 100 along the lifting direction when the transfer unit 1 extends during the lifting and lowering process, so as to prevent the irradiation chamber 100 from falling during the lifting and lowering process and ensure the stability and reliability of the transfer. Furthermore, based on the limiting module 13 of the transfer unit 1, several transfer units 1 can be modularly combined with each other along the lifting direction according to the actual depth of the reactor. The spacing between the several transfer units 1 can be determined according to the actual situation. For example, the capture range of the lifting module 12 of each of the two transfer units 1 set up vertically can be used as the spacing between the several transfer units 1, thereby meeting the needs of transferring the irradiation chamber 100 in a deeper reactor. Especially when the irradiation chamber 100 transitions from one transfer unit 1 to another transfer unit 1, the limiting module 13 can ensure that the irradiation chamber 100 is captured by another transfer unit 1 before the restriction on its relative position is released. This effectively ensures the stability of the connection of the transfer units connected in series during the transfer of the irradiation chamber 100 when multiple transfer units 1 are modularly set up. It overcomes the defect of the traditional hoisting grab that swings left and right due to the hoisting characteristics when grabbing the irradiation chamber 100, as well as the instability of hoisting when transferring the irradiation chamber 100 to a deeper reactor.
[0085] Furthermore, in this embodiment, the lifting module 12 includes a guide tube 121, a guide sleeve 122, a spiral structure 123, a driven gear 124, and a driven gear 125. The guide tube 121, guide sleeve 122, spiral structure 123, and driven gear 124 are coaxially arranged. The spiral structure 123 is sleeved on the outer periphery of the guide sleeve 122, and the guide tube 121 is sleeved on the outer periphery of the spiral structure 123. The driven gear 124 is disposed on the outer edge of the guide tube 121 and meshes with the driven gear 125. The ends of the guide tube 121, spiral structure 123, and driven gear 124 are... Located on the same horizontal plane, the guide sleeve 122 extends toward the limiting module 13, the spiral structure 123 is connected to the guide tube 121 and rotates around the guide sleeve 122 following the guide tube 121, the power drive gear 125 is coaxially arranged with the output shaft of the drive module 11, the outer surface of the irradiation chamber 100 is provided with a lifting lug 101, and multiple sets of lifting lugs 101 can be arranged along the lifting direction. The guide sleeve 122 is provided with a guide groove 1221, which extends along the lifting direction of the lifting module 12. The lifting lug 101 slides in the guide groove 1221 and is embedded in the spiral gap of the spiral structure 123.
[0086] Specifically, the guide sleeve 122 has a cylindrical structure. The guide sleeve 122 extends from the transfer part 1 and extends along the lifting direction. The guide tube 121 is coaxially arranged with the guide sleeve 122 and also extends along the lifting direction. The extension length of the guide sleeve 122 is greater than the extension length of the guide tube 121. The through hole 14 of the lifting module 12 is located at the axis of the guide sleeve 122, that is, the irradiation chamber 100 passes through the guide sleeve 122. The guide sleeve 122 is used to capture the irradiation chamber 100. The inner wall of the guide sleeve 122 is provided with a guide groove 1221. The guide groove 1221 is symmetrically arranged about the diameter of the guide sleeve 122. The guide groove 1221 extends along the lifting direction and penetrates the inner wall of the guide sleeve 122. An end ring 1222 is provided at the end of the guide sleeve 122 away from the transfer part 1. The diameter of the end ring 1222 is larger than the diameter of the guide sleeve 122. The guide groove 1221 extends to the end of the end ring 1222 but does not penetrate the end ring 1222. The end ring 1222 is used to connect the end of the guide sleeve 122 away from the transfer part 1 to form a whole, thereby improving the structural strength of the end of the guide sleeve 122 away from the transfer part 1 and preventing the inner wall of the guide sleeve 122 from becoming a dispersed structure and tilting outwards due to the penetration of the guide groove 1221.
[0087] The spiral structure 123 is a spirally wound rod in the prior art. The spiral structure 123 itself has a spiral gap. The outer surface of the irradiation chamber 100 is provided with a lifting lug 101. Multiple sets of lifting lugs 101 can be provided. Each set of lifting lugs 101 has two lifting lugs 101, and the two lifting lugs 101 are symmetrically arranged about the diameter of the irradiation chamber 100. The two lifting lugs 101 are respectively embedded in the spiral gap. At the same time, the two lifting lugs 101 are also slidably disposed in the guide groove 1221. The spiral structure 123 is sleeved on the outer periphery of the guide sleeve 122. That is to say, the two lifting lugs 101 slide from the guide groove 122. Extending out and embedded within the helical gap, when the helical structure 123 is driven and rotated by the driving gear 125, the driven gear 124, and the guide tube 121, the lifting lug 101 is always slidably disposed within the guide groove 1221 and guided by the guide groove 1221. Thus, while the helical structure 123 is rotating, the lifting lug 101 slides within the helical gap. This means that the rotating helical structure 123 can drive the irradiation chamber 100 with the lifting lug 101 to different heights within the helical gap in the lifting direction, thereby achieving the lifting and lowering of the irradiation chamber 100 along the lifting direction. The cooperation between the guide groove 1221 and the helical structure 123 makes the lifting and lowering process of the irradiation chamber 100 with the lifting lug 101 smoother, avoiding the negative impacts of rapid ascent or descent when using a hoisting structure for lifting.
[0088] The guide tube 121 is a cylindrical structure, sleeved on the outer periphery of the spiral structure 123 and welded to it. A driven gear 124 is integrally formed on the outer edge of the guide tube 121. The driven gear 124 and the driving gear 125 are arranged side-by-side and mesh with each other. The driving gear 125 is coaxially mounted with the output shaft of the drive module 11, and the output shaft causes the driving gear 125 to rotate. Correspondingly, the driven gear 124, the guide tube 121, and the spiral structure 123 rotate, thereby causing the irradiation chamber 100 to rise and fall in the lifting direction. It should be noted that the guide sleeve 122 does not rotate with the guide tube 121.
[0089] In this embodiment, the lifting module 12 further includes a guide rod 126. Multiple guide rods 126 are provided and located on the outer periphery of the spiral structure 123. The guide rods 126 extend from the end of the guide tube 121 along the lifting direction of the lifting module 12 to the end of the guide sleeve 122 away from the limiting module 13.
[0090] Specifically, multiple guide rods 126 are provided, and a receiving groove is provided inside the guide tube 121 to accommodate the guide rods 126. The guide rods 126 extend from the end of the guide tube 121 toward the end of the guide sleeve 122 away from the limiting module 13, and extend to the end ring 1222. The guide rods 126 rotate synchronously with the guide tube 121. By providing guide rods 126 on the outer periphery of the spiral structure 123, the rotating guide rods 126 are prevented from contacting the lifting lug 101, thus preventing the axis of the irradiation chamber 100 from deviating from the axis of the guide sleeve 122, and preventing the irradiation chamber 100 from deviating from the spiral structure 123 and extending out of the spiral structure 123.
[0091] In this embodiment, the limiting module 13 includes a limiting seat 131, a rotating seat 132, a driven rack 133, and a limiting drive gear 134. The limiting seat 131 has a backstop structure 135 and channels 136 spaced apart from the backstop structure 135 along the circumferential direction of the lifting module 12. A through hole 14 of the limiting module 13 is located at the axis of the limiting seat 131. The rotating seat 132 is sleeved on the outer periphery of the limiting seat 131. A driven rack 133 is provided on the outer edge of the rotating seat 132, extending around the circumference of the rotating seat 132 and intersecting with the driving gear 134. The limiting drive gear 134 meshes with the output shaft of the drive module 11. When the irradiation chamber 100 is lifted along the lifting direction of the lifting module 12, the limiting drive gear 134 drives the rotating seat 132 to rotate, and the rotating seat 132 drives the limiting seat 131 to rotate, so that the backstop structure 135 is connected to the guide groove 1221. When the irradiation chamber 100 is lowered along the lifting direction of the lifting module 12, the limiting drive gear 134 drives the rotating seat 132 to rotate, and the rotating seat 132 drives the limiting seat 131 to reverse, so that the channel 136 is connected to the guide groove 1221.
[0092] Specifically, the limiting seat 131 has a cylindrical structure and a through hole 14 is provided at its axis. The rotating seat 132 has an annular structure and is sleeved on the outer periphery of the limiting seat 131. The limiting seat 131 is provided with a backstop structure 135 and a channel 136, which has the same shape as the guide groove 1221. A driven rack 133 is provided on the outer surface of the rotating seat 132 along its circumference. The driven rack 133 meshes with the limiting drive gear 134. The limiting drive gear 134 is arranged side by side with the limiting seat 131 and is coaxial with the output shaft of the drive module 11. The limiting drive gear 134 is driven and rotated by the output shaft, which in turn drives the driven rack 133 and the rotating seat 132 to rotate, thereby driving the limiting seat 131 to rotate.
[0093] Taking the lifting of the irradiation chamber 100 along the lifting module 12 as an example, when the spiral structure 123 is driven and rotated by the power drive gear 125, the power driven gear 124 and the guide tube 121, causing the irradiation chamber 100 to be lifted along the lifting direction, before the irradiation chamber 100 extends out of the transfer part 1 from the limit seat 131, the limit drive gear 134 drives the rotating seat 132 to rotate and the rotating seat 132 drives the limit seat 131 to rotate, so that the backstop structure 135 is connected to the guide groove 1221. When the irradiation chamber 100 extends out of the guide sleeve 122 and into the limit seat 131, the backstop structure 135 abuts against the outer surface of the lifting lug 101 to prevent the lifting lug 101 from falling down along the lifting direction after detaching from the spiral structure 123, thus ensuring the relative position of the irradiation chamber 100 in the lifting direction. If multiple transfer units 1 are provided, when the lower transfer unit 1 lifts the irradiation chamber 100 and the irradiation chamber 100 extends out of the lower transfer unit 1 and is captured by the spiral structure 123 of the upper transfer unit 1, the check valve structure 135 of the lower transfer unit 1 can still prevent the irradiation chamber 100 from falling until the irradiation chamber 100 is completely detached from the lower transfer unit 1. In other words, multiple transfer units 1 can be arranged at intervals along the lifting direction, and the limiting module 13 can prevent the irradiation chamber 100 from falling during transfer, especially at the series connection of two adjacent transfer units 1. This allows multiple transfer units 1 to be modularly arranged to meet the stability and reliability requirements of transfer at greater reactor depths.
[0094] Similarly, if the irradiation chamber 100 descends along the lifting direction of the lifting module 12, the spiral structure 123 reverses through the power drive gear 125, the power driven gear 124, and the guide tube 121, causing the irradiation chamber 100 to descend along the lifting direction. Before the irradiation chamber 100 is transferred from the upper transfer section 1 to the lower transfer section 1, the limiting drive gear 134 reverses and drives the rotating seat 132 to rotate, and the rotating seat 132 drives the limiting seat 131 to rotate, so that the channel 136 is connected to the guide groove 1221. By connecting the channel 136 to the guide groove 1221, the lifting lug 101 of the irradiation chamber 100 can smoothly enter the guide groove 1221 through the channel 136, that is, the irradiation chamber 100 can continue to descend. The limiting seat 131 itself, such as the end face or the backstop structure 135, is used to correspond with the lifting lug 101 of the irradiation chamber 100 to achieve the limitation of the relative position in the lifting direction. At this time, part of the irradiation chamber 100 is still driven by the upper transfer section 1, thereby ensuring the relative position along the lifting direction. Until the spiral structure 123 of the lower transfer section 1 captures the lifting lug 101 of the irradiation chamber 100, it can still prevent the irradiation chamber 100 from descending and continue to drive the spiral structure 123 of the upper transfer section 1 until the irradiation chamber 100 is completely separated from the upper transfer section 1.
[0095] Furthermore, in this embodiment, the anti-reverse structure 135 includes a through groove 1351, an anti-reverse member 1352, and a torsion spring 1353. The through groove 1351 is arranged along the lifting direction of the lifting module 12. When the irradiation chamber 100 is lifted along the lifting direction of the lifting module 12, the through groove 1351 is connected to the guide groove 1221. The anti-reverse member 1352 is arranged on opposite sides of the through groove 1351 and is inclined toward the inside of the through groove 1351. The torsion spring 1353 is used to provide elastic force for the anti-reverse member 1352 to always be inclined toward the inside of the through groove 1351.
[0096] Specifically, the through groove 1351 and the channel 136 are spaced apart along the circumferential direction of the through hole 14 of the limiting seat 131. Both the through groove 1351 and the channel 136 extend from one end of the limiting seat 131 to the other end. A groove 1354 is also provided on the outer periphery of the through groove 1351, and part of the through groove 1351 is located within the projection range of the groove 1354. The size of the groove 1354 is larger than the size of the through groove 1351. Two backstops 1352 are provided in the same groove 1354. The backstop 1352 has an inverted V-shaped structure and is inclined toward the through groove 1351. The backstop 1352 is elastically connected to the inner wall of the groove 1354 by a torsion spring, so that the torsion spring 1353 provides elastic force to keep the backstop 1352 inclined toward the through groove 1351. When the irradiation chamber 100 is lifted, the lifting lug 101 slides from the through groove 1351 and abuts against the lifting lug 101 through the two backstops 1352 to limit the relative position of the irradiation chamber 100 in the lifting direction.
[0097] It is understood that in this embodiment, there are two through slots 1351 and two grooves 1354 arranged opposite to each other. Correspondingly, there are four backstops 1352 and four torsion springs 1353. Compared with one backstop structure 135, by increasing the number of backstop structures 135, the stability and force uniformity of limiting the fall of the irradiation chamber 100 are improved.
[0098] In this embodiment, the limiting seat 131 is also provided with a first limiting block 137 and a second limiting block 138 that are offset from each other. The transfer part 1 is provided with a first limiting groove 15 corresponding to the first limiting block 137, and the rotating seat 132 is provided with a second limiting groove 1321 corresponding to the second limiting block 138. The first limiting block 137 is located above the second limiting block 138. When the irradiation chamber 100 is lifted along the lifting direction of the lifting module 12, the rotating seat 132 drives the limiting seat 131 to rotate and abuts against the end of the first limiting groove 15 through the first limiting block 137 to keep the through groove 1351 of the anti-reverse structure 135 corresponding to the guide groove 1221.
[0099] When the irradiation chamber 100 descends along the lifting direction of the lifting module 12, the rotating seat 132 drives the limiting seat 131 to rotate and abuts against the end of the second limiting groove 1321 through the second limiting block 138 to keep the channel 136 of the limiting seat 131 corresponding to the guide groove 1221.
[0100] Specifically, the limiting seat 131 has locking grooves for engaging the first limiting block 137 and the second limiting block 138. The locking grooves are T-shaped grooves, extending to opposite ends of the limiting seat 131 to facilitate engaging the first limiting block 137 and the second limiting block 138. The first limiting block 137 and the second limiting block 138 are T-shaped structures, and the first limiting groove 15 and the second limiting groove 1321 are both arc-shaped grooves. When the irradiation chamber 100 is lifted along the lifting direction of the lifting module 12, the rotating seat 132 drives the limiting seat 131 to rotate and abuts against the end of the first limiting groove 15 through the first limiting block 137 to keep the through groove 1351 of the anti-reverse structure 135 always corresponding to the guide groove 1221. This allows the irradiation chamber 100 to limit its relative position through the anti-reverse structure 135, preventing it from falling.
[0101] When the irradiation chamber 100 descends along the lifting direction of the lifting module 12, the rotating seat 132 reverses and drives the limiting seat 131 to rotate and abuts against the end of the second limiting groove 1321 through the second limiting block 138 to keep the channel 136 of the limiting seat 131 always corresponding to the guide groove 1221, so that the lifting lug 101 of the irradiation chamber 100 can enter the guide groove 1221 through the channel 136, which further facilitates the descent of the irradiation chamber 100.
[0102] In this embodiment, spring plungers 16 are also provided at the ends of the first limiting groove 15 and the second limiting groove 1321. When the first limiting block 137 abuts against the first limiting groove 15, or when the second limiting block 138 abuts against the second limiting groove 1321, the spring plungers 16 provide a tendency for the driven rack 133 on the rotating seat 132 to maintain meshing with the limiting drive gear 134.
[0103] When the rotating seat 132 drives the limiting seat 131 to rotate and makes the through groove 1351 correspond to the guide groove 1221 or the channel 136 correspond to the guide groove 1221, the spring plunger 16 is used to absorb the force of the limiting drive gear 134 driving the driven rack 133 and the rotating seat 132 to continue to rotate and maintain the correspondence between the through groove 1351 and the guide groove 1221 or the channel 136 and the guide groove 1221.
[0104] There are two second limiting blocks 138, and the central angle between the two second limiting blocks 138 is 180°. Correspondingly, there are two second limiting grooves 1321.
[0105] Specifically, the spring plunger 16 includes a spring and a support inserted within the spring. The spring plunger 16 is a structure in the prior art and will not be described in detail here. When the first limiting block 137 abuts against the first limiting groove 15, the first limiting block 137 abuts against the end of the first limiting groove 15 to keep the through groove 1351 of the backstop structure 135 always corresponding to the guide groove 1221. When the second limiting block 138 abuts against the second limiting groove 1321, the second limiting block 138 abuts against the end of the second limiting groove 1321 to keep the channel 136 of the limiting seat 131 always corresponding to the guide groove 1221. At this time, the limiting drive gear 134 rotates continuously and applies a continuous force to the driven rack 133, while the spring plunger 16 is compressed and provides a reaction force for the skipped teeth at the end of the driven rack 133, so that the driven rack 133 and the limiting drive gear 134 always remain meshed. Furthermore, when the limiting drive gear 134 reverses, the driven rack 133, which is in a skipped tooth state, can promptly mesh with the limiting drive gear 134 and drive the rotating seat 132 and the limiting seat 131 to rotate to the expected position.
[0106] When the rotating seat 132 drives the limiting seat 131 to rotate and makes the through groove 1351 correspond to the guide groove 1221 or the channel 136 correspond to the guide groove 1221, the spring plunger 16 is used to absorb the force of the limiting drive gear 134 driving the driven rack 133 and the rotating seat 132 to continue to rotate and maintain the correspondence between the through groove 1351 and the guide groove 1221 or the channel 136 and the guide groove 1221.
[0107] It is understandable that the rotating seat 132 and the limiting seat 131 are set separately. The rotating seat 132 is used to drive the limiting seat 131 to rotate. When the driven rack 133 is in a skipped tooth state, the force generated will cause the rotating seat 132 to sway in its rotation direction. The spring support 16 buffers this force to reduce the situation where the limiting seat 131 sways due to the swaying of the rotating seat 132, so as to keep the channel 136 or through groove 1351 on the limiting seat 131 in position always corresponding to the guide groove 1221, so that the limiting module 13 runs more smoothly.
[0108] It should be noted that in this embodiment, the curvature of the second limiting groove 1321, the size of the spring plunger 16, and the extension size of the driven rack 133 are reasonably matched with each other according to actual needs, thereby effectively ensuring the stability of the operation of the limiting module 13.
[0109] In addition, two second limiting blocks 138 are provided and located on the same horizontal plane. Correspondingly, two locking grooves are provided for engaging the second limiting blocks 138. The two second limiting blocks 138 are spaced apart, and the circumference of the interval corresponds to a central angle of 180° with respect to the diameter of the limiting seat 131. That is, the two second limiting blocks 138 are symmetrically arranged about the diameter of the limiting seat 131. Correspondingly, two second limiting grooves 1321 are provided. Compared with a single second limiting block 138, providing two second limiting blocks 138 allows for more even force distribution on the limiting seat 131 when it rotates, resulting in better rotational reliability.
[0110] In this embodiment, the output shaft of the drive module 11 is fitted with an oil-free bushing (not shown in the figure) on the surface that contacts the limiting drive gear 134. The limiting drive gear 134 is driven and rotated by the oil-free bushing.
[0111] Specifically, both the limiting drive gear 134 and the power drive gear 125 are coaxially arranged with the output shaft and driven by the output shaft. When the irradiation chamber 100 is raised or lowered, the rotation of the output shaft can simultaneously drive the limiting drive gear 134 and the power drive gear 125 to rotate. Since the backstop structure 135 or the channel 136 remains connected to the guide groove 1221 after rotating into position, rather than rotating continuously, when the limiting drive gear 134 drives the driven rack 133 to rotate, if the limiting drive gear 134 continues to rotate after the backstop structure 135 or the channel 136 has rotated into position, it is easy for the backstop structure 135 or the channel 136 to fall out of the expected position. However, the use of the oilless bushing in the prior art can reduce the torque transmission to the limiting drive gear 134, thereby reducing the torque transmission to the rotating seat 132 and the limiting seat 131, and avoiding the situation where the limiting seat 131 continues to rotate and the channel 136 or the backstop structure 135 cannot correspond to the guide groove 1221.
[0112] In this embodiment, the transfer unit 1 includes a top plate 17, a partition plate 18 and a bottom plate 19, a lifting module 12 is embedded between the bottom plate 19 and the partition plate 18, and a limiting module 13 is embedded between the top plate 17 and the partition plate 18.
[0113] Specifically, the top plate 17, partition plate 18, and bottom plate 19 are provided with openings coaxially arranged with the through hole 14, and through holes coaxially arranged with and passing through the drive gear 125, the limit drive gear 134, and the output shaft. The top plate 17 covers the limit module 13, and the first limit groove 15 is provided at the opening of the top plate 17 corresponding to the limit module 13. The bottom plate 19 covers the drive gear 124 of the lifting module 12, and one end of the guide tube 121 extends from the opening of the bottom plate 19. The partition plate 18 is located between the drive gear 124 and the limit seat 131, so that the transfer part 1 can support the lifting module 12 and the limit module 13, and the partition plate 18 separates the lifting module 12 and the limit module 13 to prevent them from interfering with each other.
[0114] In this embodiment, one end of the guide sleeve 122 is integrally formed with the partition 18, and the guide groove 1221 extends to the end of the partition 18.
[0115] In this embodiment, the drive module 11 includes a motor, which is located below the base plate 19 and arranged side by side with the lifting module 12. Along the lifting direction of the lifting module 12, the extension dimension of the drive module 11 is smaller than the extension dimension of the lifting module 12.
[0116] Specifically, the drive module 11 and the lifting module 12 are arranged side by side. The output shaft of the drive module 11 extends into the through holes of the top plate 17, the partition plate 18 and the bottom plate 19. The motor of the drive module 11 is located below the bottom plate 19. Compared with the motor being located above the top plate 17, this reduces the space occupied by the drive module 11 in the lifting direction of the transfer part 1, and avoids the situation where the drive module 11 is located above the top plate 17, making it impossible to modularly set another transfer part 1 above the transfer part 1.
[0117] In this embodiment, the end of the lug 101 that abuts against the spiral structure 123 is provided with a slope 102, and the inclination direction of the slope 102 is the same as the spiral inclination direction of the spiral structure 123.
[0118] Specifically, the bottom ends of the two lifting lugs 101 arranged opposite each other in the same group, which are used to abut against the spiral structure 123, are also provided with slopes 102. The inclination angle of the slopes 102 can be determined according to the actual abutment requirements. The inclination direction of the slopes 102 is the same as the spiral inclination direction of the spiral structure 123. When the spiral structure 123 captures the irradiation chamber 100, the spiral structure 123 rotates and causes the lifting lugs 101 to embed in the spiral gap, and the bottom end of the lifting lugs 101 contacts the spiral structure 123. Compared with the lifting lugs 101 without slopes 102, it can ensure that even if there is a certain positional error in the axial direction of the through holes 14 of the two adjacent transfer parts 1, it can still be successfully grasped, thereby improving the stability and efficiency of capturing the irradiation chamber 100.
[0119] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.
Claims
1. A modular transport structure for a reactor, wherein the modular transport structure for a reactor is used to transfer an irradiation chamber, characterized in that, The modular transport structure for the reactor includes: The transfer unit includes a drive module, a lifting module, and a limiting module. The output shaft of the drive module is connected to the lifting module and the limiting module respectively. The limiting module and the lifting module are stacked sequentially along the lifting direction of the lifting module. Both the lifting module and the limiting module are provided with through holes and are coaxially arranged. The irradiation chamber passes through the through holes. The irradiation chamber is driven by the drive module and the lifting module and moves up and down from the through holes along the lifting direction of the lifting module. When the end of the irradiation chamber passes through the lifting module and the limiting module in sequence and extends out of the transfer unit, the limiting module is used to limit the relative position of the irradiation chamber along the lifting direction of the lifting module. The transfer section is provided in multiple ways, and the multiple transfer sections are arranged sequentially at intervals along the lifting direction of the lifting module. The through holes of the lifting module and the limiting module between two adjacent transfer sections are coaxially arranged. When the end of the irradiation chamber extends from one of the transfer sections to another transfer section, the limiting module restricts the relative position of the irradiation chamber along the lifting direction of the lifting module. When the irradiation chamber extending from one of the transfer sections at least partially contacts and captures the lifting module of the other transfer section, the limiting module of the transfer section used to restrict the relative position of the irradiation chamber releases the irradiation chamber.
2. The modular transport structure for reactors as described in claim 1, characterized in that, The lifting module includes a guide tube, a guide sleeve, a spiral structure, a driven gear, and a driving gear. The guide tube, guide sleeve, spiral structure, and driven gear are coaxially arranged. The spiral structure is sleeved on the outer periphery of the guide sleeve, and the guide tube is sleeved on the outer periphery of the spiral structure. The driven gear is located on the outer edge of the guide tube and meshes with the driving gear. The ends of the guide tube, spiral structure, and driven gear are located on the same horizontal plane. The guide sleeve extends toward the limiting module. The spiral structure is connected to the guide tube and rotates around the guide sleeve following the guide tube. The driving gear is coaxially arranged with the output shaft of the drive module. A lifting lug protrudes from the outer surface of the irradiation chamber. A guide groove is formed on the guide sleeve, extending along the lifting direction of the lifting module. The lifting lug slides in the guide groove and is embedded in the spiral gap of the spiral structure.
3. The modular transport structure for reactors as described in claim 2, characterized in that, The lifting module also includes guide rods, of which there are multiple guide rods located on the outer periphery of the spiral structure. The guide rods extend from the end of the guide tube along the lifting direction of the lifting module to the end of the guide sleeve away from the limiting module.
4. The modular transport structure for reactors as described in claim 2, characterized in that, The limiting module includes a limiting seat, a rotating seat, a driven rack, and a limiting drive gear. The limiting seat has a backstop structure and channels spaced apart from the backstop structure along the circumferential direction of the lifting module. The through hole of the limiting module is located at the axis of the limiting seat. The rotating seat is sleeved on the outer circumference of the limiting seat. The driven rack is located on the outer edge of the rotating seat. The driven rack extends around the circumference of the rotating seat and meshes with the limiting drive gear. The limiting drive gear is coaxially arranged with the output shaft of the drive module. When the irradiation chamber is lifted along the lifting direction of the lifting module, the limiting drive gear drives the rotating seat to rotate, and the rotating seat drives the limiting seat to rotate, so that the backstop structure is connected to the guide groove. When the irradiation chamber is lowered along the lifting direction of the lifting module, the limiting drive gear drives the rotating seat to rotate, and the rotating seat drives the limiting seat to rotate in reverse, so that the channels are connected to the guide groove.
5. The modular transport structure for reactors as described in claim 4, characterized in that, The anti-reverse structure includes a through groove, an anti-reverse element, and a torsion spring. The through groove is arranged along the lifting direction of the lifting module. When the irradiation chamber is lifted along the lifting direction of the lifting module, the through groove is connected to the guide groove. The anti-reverse element is arranged on opposite sides of the through groove and is inclined toward the inside of the through groove. The torsion spring is used to provide elastic force for the anti-reverse element to always be inclined toward the inside of the through groove.
6. The modular transport structure for a reactor as described in claim 5, characterized in that, The limiting seat is also provided with a first limiting block and a second limiting block that are offset from each other. The transfer part is provided with a first limiting groove corresponding to the first limiting block, and the rotating seat is provided with a second limiting groove corresponding to the second limiting block. The first limiting block is located above the second limiting block. When the irradiation chamber is lifted along the lifting direction of the lifting module, the rotating seat drives the limiting seat to rotate and abuts against the end of the first limiting groove through the first limiting block to keep the through groove of the anti-reverse structure corresponding to the guide groove. When the irradiation chamber descends along the lifting direction of the lifting module, the rotating seat drives the limiting seat to rotate and abuts against the end of the second limiting groove through the second limiting block to keep the channel of the limiting seat corresponding to the guide groove.
7. The modular transport structure for a reactor as described in claim 6, characterized in that, The ends of the first limiting groove and the second limiting groove are also provided with spring plungers. When the first limiting block abuts against the first limiting groove, or when the second limiting block abuts against the second limiting groove, the spring plunger provides a tendency for the driven rack on the rotating seat to mesh with the limiting drive gear. When the rotating seat drives the limiting seat to rotate and makes the through groove correspond to the guide groove or the channel correspond to the guide groove, the spring plunger is used to absorb the force of the limiting drive gear driving the driven rack and the rotating seat to continue rotating and to keep the through groove corresponding to the guide groove or the channel corresponding to the guide groove; There are two second limiting blocks, and the central angle between the two second limiting blocks is 180°. Correspondingly, there are two second limiting grooves.
8. The modular transport structure for a reactor as described in claim 4, characterized in that, The output shaft of the drive module is fitted with an oil-free bushing on the surface that contacts the limiting drive gear, and the limiting drive gear is driven and rotated by the oil-free bushing.
9. The modular transport structure for a reactor as described in claim 1, characterized in that, The transfer unit includes a top plate, a partition plate, and a bottom plate. The lifting module is embedded between the bottom plate and the partition plate, and the limiting module is embedded between the top plate and the partition plate.
10. The modular transport structure for a reactor as described in claim 9, characterized in that, The drive module includes a motor, which is located below the base plate and arranged side by side with the lifting module. Along the lifting direction of the lifting module, the extension dimension of the drive module is smaller than the extension dimension of the lifting module.
11. The modular transport structure for a reactor as described in claim 2, characterized in that, The end of the lug that abuts against the spiral structure is provided with a slope, and the slope is inclined in the same direction as the spiral inclination direction of the spiral structure.