High-level radioactive shielding transport mechanism

Abstract

This invention relates to a high-radiation-material shielding and transport mechanism. By incorporating a shielding device, including a shielding cylinder and a lifting channel, it ensures that personnel can stay away from the radiation source during detector assembly replacement, effectively reducing the risk of radiation exposure and protecting the health and safety of operators. Secondly, the invention also includes a detector connection device, featuring a connecting ring, a connecting cylinder, and a locking mechanism. This design allows the detector end to be quickly and stably locked or released, simplifying the detector disassembly process and improving work efficiency. The combined use of a pull-out device and a lifting device enables automated detector extraction and installation. The pull-out assembly can slide within the lifting channel and is detachably connected to the detector connection device via a pull-out connecting assembly. Combined with the lifting device's drive, this ensures smooth detector extraction, greatly facilitating detector disassembly.

Description

Technical Field

[0001] This invention relates to the field of nuclear power, and more particularly to a high-radioactivity material shielding and transport mechanism. Background Technology

[0002] During the operation of a nuclear power plant, the core measurement system plays a crucial role in ensuring the safe and efficient operation of the nuclear reactor. The core measurement system enters the core from the upper reactor internals and is equipped with multiple high-radiation-rate (RIC) detector assemblies, including multiple neutron measurement assemblies for monitoring neutron flux distribution and multiple coolant level measurement assemblies for monitoring coolant levels. These detector assemblies are exposed to a high radiation dose rate environment for extended periods, operating continuously for approximately two fuel cycles, providing operators with real-time core status information.

[0003] However, as these detector components age, they gradually require replacement to ensure the accuracy and reliability of monitoring data. Because these components are exposed to high-intensity radiation for extended periods, they themselves also possess high levels of radioactivity. Currently, replacement methods for decommissioned detector components often struggle to balance efficiency and safety, particularly during the process of removing decommissioned detectors from the upper reactor internals of a pressure vessel. Effective shielding measures are lacking to protect personnel from unnecessary radiation exposure. Furthermore, existing removal devices are inconvenient to operate. Summary of the Invention

[0004] This invention provides a high-radiation material shielding and transfer mechanism, which can solve the problems of easy radiation exposure for personnel and inconvenience in replacement operation during the replacement of detector components.

[0005] This invention provides a high-radiation material shielding and transport mechanism, comprising:

[0006] The shielding device includes a shielding cylinder, and a lifting channel is provided inside the shielding cylinder;

[0007] A detector connection device includes a connecting ring, a connecting cylinder, and a locking member. The connecting ring is disposed on the connecting cylinder, and the locking member is movably disposed on the connecting cylinder. The locking member and the connecting cylinder are used together to close and lock the end of the detector.

[0008] A pulling device includes a pulling component and a pulling connecting component. The pulling component is slidably disposed on the lifting channel, and the pulling connecting component is disposed on the pulling component and detachably connected to the connecting lifting ring.

[0009] A lifting device is provided on the shielding cylinder and is detachably connected to the extraction assembly. The lifting device drives the extraction assembly to slide along the lifting channel, thereby the extraction assembly drives the detector connection device to move, and then the detector connection device extracts the detector.

[0010] Preferably, the extraction assembly includes an extraction body, a guide wheel, a wire rope connector, and an extraction chain, wherein the guide wheel, the wire rope connector, and the extraction chain are respectively disposed on the extraction body;

[0011] The extraction body is slidably disposed within the lifting channel, the guide wheel is slidably disposed on the inner wall of the lifting channel, a steel wire rope is disposed on the steel wire rope connector, the steel wire rope is connected to the lifting device, and the extraction chain is detachably connected to the connecting ring.

[0012] The lifting device drives the extraction body to slide along the lifting channel via the steel wire rope.

[0013] Preferably, at least one guide groove is formed on the side wall of the lifting channel;

[0014] The guide wheel includes a plurality of lifting positioning wheels and a plurality of horizontal limiting wheels. At least one mounting groove is provided on the side wall of the extraction body, and at least one lifting positioning wheel and at least one horizontal limiting wheel are provided in each mounting groove.

[0015] Both the lifting positioning wheel and the horizontal limiting wheel are slidably disposed in the guide groove. The lifting positioning wheel is movably abutted against the bottom of the guide groove, and the horizontal limiting wheel is movably abutted against two opposite groove walls inside the guide groove.

[0016] Preferably, the lifting device includes a lifting limit switch and a winch assembly. The lifting limit switch is disposed at the end of the shielding cylinder and electrically connected to the winch assembly. The wire rope is wound around the winch assembly, and the winch assembly drives the wire rope to wind up and unwind.

[0017] The extraction assembly also includes a limiting rod, which is disposed on the extraction body and configured to press and trigger the lifting limit switch when driven by the extraction body.

[0018] Preferably, the lifting device includes a top platform, a winch platform, a fixed pulley assembly, a winch assembly, and a wire rope;

[0019] The top platform is located at the end of the shielding cylinder, the winch platform is located between the two ends of the shielding cylinder, the fixed pulley assembly is located on the top platform, the winch assembly is located on the winch platform, at least a portion of the wire rope is wound around the winch assembly, the wire rope passes through the fixed pulley and through the lifting channel and is connected to the extraction assembly.

[0020] Preferably, the fixed pulley assembly includes a weighing component, a fixed pulley seat, a fixed pulley, and an observation camera. The weighing component is disposed on the top platform, the fixed pulley seat is disposed on the weighing component, the fixed pulley is rotatably disposed on the fixed pulley seat, and the wire rope is wound around the fixed pulley.

[0021] Preferably, the hoisting platform has a clearance hole, and the shielding cylinder passes through the clearance hole; and / or

[0022] The winch assembly includes a winch motor, a drum, a counterweight box, a spare handwheel, and a position detection sensor. The winch motor and the counterweight box are symmetrically arranged on the winch platform. The winch motor is driven and connected to the drum. The counterweight box is located on the winch platform. The spare handwheel is detachably located on the winch platform. The winch motor has a handwheel insertion hole.

[0023] Preferably, the drum is a double-drum body, with two steel wire ropes wound on the double-drum body respectively. The two steel wire ropes are respectively wound around the fixed pulley and connected to the extraction assembly through the lifting channel.

[0024] Preferably, the high-radiation material shielding transfer mechanism further includes a lifting device, which includes a lifting body, a lifting shaft, and a connecting pin. The lifting shaft and the connecting pin are respectively disposed on the lifting body, the connecting pin is connected to the top platform, and the lifting shaft is used for connecting lifting equipment.

[0025] Preferably, the shielding device further includes an alignment seat, a mounting seat, and a plurality of alignment posts. The alignment seat has a plurality of alignment holes. The alignment seat is disposed on the shielding cylinder. The mounting seat is disposed in the core pool. Each of the alignment posts is disposed on the mounting seat. Each of the alignment posts is detachably inserted into each of the alignment holes.

[0026] The implementation of this invention has the following beneficial effects:

[0027] This invention relates to a high-radiation material shielding and transport mechanism, which, by setting up a shielding device including a shielding cylinder and a lifting channel, ensures that personnel can stay away from the radiation source during the replacement of detector components, effectively reducing the risk of radiation exposure and protecting the health and safety of operators.

[0028] Secondly, the present invention also includes a detector connection device, including a design of a connecting ring, a connecting cylinder and a locking element, which enables the detector end to be quickly and stably locked or released, simplifying the operation process of disassembling the detector and improving work efficiency.

[0029] The combined use of the extraction and lifting devices enables automated extraction and installation of the detector. The extraction assembly can slide within the lifting channel and is detachably connected to the detector connection device via the extraction connecting assembly. Combined with the lifting device drive, this ensures smooth extraction of the detector and greatly facilitates detector disassembly. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same parts.

[0031] Figure 1 This is a schematic diagram of the structure of a high-radioactivity material shielding and transfer mechanism in some embodiments of the present invention;

[0032] Figure 2 From another perspective Figure 1 The diagram shows a schematic of a high-radioactivity shielding and transport mechanism.

[0033] Figure 3 This is an exploded view of a high-radioactivity shielding and transfer mechanism in some embodiments of the present invention;

[0034] Figure 4 From another perspective Figure 3 An exploded view of the high-radioactivity shielding and transfer mechanism shown.

[0035] Figure 5 These are schematic diagrams of the detector connection device, the pull-out device, and the detector in some embodiments of the present invention.

[0036] Figure 6 This is a schematic diagram of the extraction device and detector in some embodiments of the present invention;

[0037] Figure 7 This is a schematic diagram of the fracture structure of a high-radioactivity shielding and transfer mechanism in some embodiments of the present invention;

[0038] Figure 8 These are schematic diagrams of the extraction device in some embodiments of the present invention;

[0039] Figure 9 These are schematic diagrams of the lifting device and hoisting device in some embodiments of the present invention;

[0040] Figure 10This is a partial structural schematic diagram of the lifting device in some embodiments of the present invention. Detailed Implementation

[0041] Embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be more thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0042] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Figures 1 to 4 The high radioactivity shielding transfer mechanism 10 in some embodiments of the present invention is shown. The high radioactivity shielding transfer mechanism 10 is used to extract the detector 20 from the reactor core, complete the disassembly of the detector 20, and maintain radiation shielding of the detector 20 during the disassembly process.

[0046] like Figures 1 to 6As shown, the high-radioactivity shielding and transport mechanism 10 includes a shielding device 1, a detector connecting device 2, a pulling device 3, and a lifting device 4. The shielding device 1 serves two purposes: firstly, to provide radiation shielding for the radioactive material (detector 20), and secondly, to provide installation positions or movement space for other devices. The detector connecting device 2 is used to fix the end of the detector 20. The pulling device 3 is slidably disposed within the shielding device 1, and is detachably connected to the detector connecting device 2. The lifting device 4 is driven and connected to the pulling device 3, and is used to drive the pulling device 3 to move within the shielding device 1, thereby causing the pulling device 3 to move the detector 20 (detector 20 is shown in the image) via the detector connecting device 2. Figure 5 and Figure 6 ), thereby completing the disassembly of detector 20.

[0047] like Figures 1 to 3 As shown, the shielding device 1 includes a shielding cylinder 11, and a lifting channel 111 is provided inside the shielding cylinder 11.

[0048] like Figure 5 and Figure 6 As shown, the detector connection device 2 includes a connecting ring 21, a connecting cylinder 22, and a locking member 23. The connecting ring 21 is disposed on the connecting cylinder 22, and the locking member 23 is movably disposed on the connecting cylinder 22. The locking member 23 and the connecting cylinder 22 are used together to close and lock the end of the detector 20.

[0049] Understandably, the connecting ring 21 is used to connect the extraction device 3 and the detector connecting device 2. The connecting cylinder 22 is used to accommodate the end of the detector 20 and is fixed by the locking member 23. The locking member 23 is movably mounted on the connecting cylinder 22 and works in conjunction with the connecting cylinder 22 to ensure that the end of the detector 20 is closed and locked, preventing accidental detachment during disassembly.

[0050] like Figure 5 , Figure 6 and Figure 8 As shown, the extraction device 3 includes an extraction component 31 and an extraction connecting component 32. The extraction component 31 is slidably disposed on the lifting channel 111, and the extraction connecting component 32 is disposed on the extraction component 31. The extraction connecting component 32 is detachably connected to the connecting ring 21.

[0051] Understandably, the pull-out assembly 31 can slide up and down along the lifting channel 111. The pull-out connecting assembly 32 is mounted on the pull-out assembly 31 and is detachably connected to the connecting ring 21 so that it can be easily separated or joined when needed.

[0052] like Figures 1 to 6As shown, the lifting device 4 is installed on the shielding cylinder 11. The lifting device 4 is detachably connected to the extraction assembly 31. The lifting device 4 drives the extraction assembly 31 to slide along the lifting channel 111, thereby the extraction connection assembly 32 drives the detector connection device 2 to move, and then the detector connection device 2 pulls out the detector.

[0053] Understandably, when the lifting device 4 is activated, it can drive the pull-out connection assembly 32 to move, thereby driving the detector connection device 2 and ultimately realizing the pull-out action of the detector 20.

[0054] Specifically, the pull-out connection assembly 32 can be configured as a shackle or other structure capable of connecting to the lifting ring. The pull-out connection assembly 32 is prior art.

[0055] like Figures 3 to 8 As shown, in some embodiments of the high radioactive material shielding transfer mechanism 10, the extraction assembly 31 includes an extraction body 311, a guide wheel 312, a wire rope connector 313, and an extraction chain 314, with the guide wheel 312, the wire rope connector 313, and the extraction chain 314 respectively disposed on the extraction body 311.

[0056] The extraction body 311 is slidably mounted 2 within the lifting channel 111. The guide wheel 312 is slidably mounted on the inner wall of the lifting channel 111. A wire rope 47 is mounted on the wire rope connector 313 and connected to the lifting device 4. The extraction chain 314 is detachably connected to the connecting ring 21. The lifting device 4 drives the extraction body 311 to slide along the lifting channel 111 via the wire rope 47.

[0057] Understandably, the extraction body 311 is slidably disposed within the lifting channel 111 and supports the guide wheel 312, the wire rope connector 313, and the extraction chain 314. The guide wheel 312 is mounted on the extraction body 311 and contacts the inner wall of the lifting channel 111. The guide wheel 312 not only reduces the friction of the extraction body 311 within the lifting channel 111 but also ensures its smooth sliding along a predetermined path, avoiding deviation or jamming. The wire rope connector 313 is used to connect the power transmission medium—the wire rope 47—between the lifting device 4 and the extraction body 311. In this way, the lifting device 4 can drive the extraction body 311 to move up and down along the lifting channel 111 via the wire rope 47. When the extraction body 311 is driven by the lifting device 4, the extraction chain 314 moves accordingly, thereby pulling the detector connecting device 2 via the connecting ring 21, ultimately completing the extraction of the detector 20.

[0058] It should be noted that when detector 20 needs to be disassembled, the lifting device 4 is activated and applies tension to the extraction body 311 via the wire rope 47. Due to the presence of the guide wheel 312, the extraction body 311 can slide smoothly within the lifting channel 111 without deviating from the track. Simultaneously, the wire rope connector 313 ensures effective force transmission, allowing the extraction body 311 to accurately respond to the actions of the lifting device 4. Finally, as the extraction body 311 moves, the extraction chain 314 drives the detector connection device 2 to move together, thereby achieving the safe removal of detector 20 from the reactor core.

[0059] like Figure 3 As shown, in some embodiments of the high-radiation material shielding transfer mechanism 10, at least one guide groove 112 is provided on the side wall of the lifting channel 111.

[0060] Understandably, the guide groove 112 is used to guide and restrict the movement of the guide wheel 312, ensuring that the extraction body 311 slides smoothly along a straight path.

[0061] like Figure 3 and Figure 8 As shown, the guide wheel 312 includes a plurality of lifting positioning wheels 3121 and a plurality of horizontal limiting wheels 3122. At least one mounting groove 3111 is provided on the side wall of the extraction body 311, and at least one lifting positioning wheel 312 and at least one horizontal limiting wheel 3122 are provided in each mounting groove 3111.

[0062] The lifting positioning wheel 3121 and the horizontal limiting wheel 3122 are both slidably disposed in the guide groove 112. The lifting positioning wheel 3121 is movably supported against the bottom of the guide groove 112, and the horizontal limiting wheel 3122 is movably supported against two opposite groove walls inside the guide groove 112.

[0063] Understandably, the main function of the lifting positioning wheel 3121 is to slide up and down along the guide groove 112, ensuring that the extraction body 311 can rise and fall vertically without tilting or shifting. The horizontal limiting wheel 3122 is also installed in the mounting groove 3111, but it contacts the two opposing groove walls within the guide groove 112. The function of the horizontal limiting wheel 3122 is to prevent the extraction body 311 from swaying in the horizontal direction, thereby maintaining its stability throughout the entire movement process.

[0064] It should be noted that when the extraction body 311 moves along the lifting channel 111 under the drive of the lifting device 4, the lifting positioning wheel 3121 rolls along the bottom of the guide groove 112, ensuring that the extraction body 311 rises or falls along a predetermined trajectory. Simultaneously, the horizontal limiting wheel 3122 abuts against the two side walls of the guide groove 112, effectively preventing any horizontal displacement of the extraction body 311 and ensuring the stable operation of the entire system. This not only improves the movement accuracy of the extraction assembly 31 but also enhances the reliability and safety of the mechanism, especially in the case of handling highly radioactive materials, minimizing potential risks during operation.

[0065] like Figure 7 and Figure 9 As shown, in some embodiments of the high radioactive material shielding and transfer mechanism 10, the lifting device 4 includes a lifting limit switch 41 and a winch assembly 46. The lifting limit switch 41 is located at the end of the shielding cylinder 11 and is electrically connected to the winch assembly 46. The wire rope 47 is wound around the winch assembly 46, and the winch assembly 46 drives the wire rope 47 to wind up and down.

[0066] Further reading Figure 5 and Figure 8 The pull-out assembly 31 also includes a limit rod 315, which is disposed on the pull-out body 311. The limit rod 315 is configured to hold and trigger the lifting limit switch 41 under the action of the pull-out body 311.

[0067] Understandably, the lifting limit switch 41 is installed at the end of the shielding cylinder 11 to detect the position of the pull-out assembly 31 and prevent it from exceeding the safe operating range. The lifting limit switch 41 is electrically connected to the hoisting assembly 46 and can automatically control the operation of the hoisting assembly 46 according to the position of the pull-out assembly 31.

[0068] The winch assembly 46 can be configured to include components such as a motor, a reducer, and a drum for winding and unwinding the wire rope 47. The wire rope 47 is wound around the winch assembly 46, and when the winch assembly 46 is started, it drives the extraction body 311 to move up and down along the lifting channel 111 by winding and unwinding the wire rope 47.

[0069] It should be noted that during operation, the hoisting assembly 46 retracts or extends the wire rope 47 according to instructions, thereby driving the extraction body 311 to move up and down along the lifting channel 111. As the extraction body 311 rises or falls, the limit rod 315 also moves accordingly. When the limit rod 315 reaches the position of the lifting limit switch 41, it will trigger the switch, cutting off the power input to the hoisting assembly 46 to prevent the extraction assembly 31 from exceeding the safety limit.

[0070] like Figure 7 , Figure 9 and Figure 10 As shown, in some embodiments of the high radioactive material shielding transfer mechanism 10, the lifting device 4 includes a top platform 43, a hoisting platform 44, a fixed pulley assembly 45, a hoisting assembly 46, and a wire rope 47.

[0071] The top platform 43 is located at the end of the shielding cylinder 11, the winch platform 44 is located between the two ends of the shielding cylinder 11, the fixed pulley assembly 45 is located on the top platform 43, the winch assembly 46 is located on the winch platform 44, at least a portion of the wire rope 47 is wound around the winch assembly 46, the wire rope 47 passes through the fixed pulley 453 and through the lifting channel 111 and is connected to the extraction assembly 31.

[0072] Understandably, the top platform 43 serves as the mounting base for the fixed pulley assembly 45. It provides a stable support point for the entire lifting system and ensures the smooth passage of the wire rope 47.

[0073] The winch platform 44 is located between the two ends of the shielded cylinder 11 and is used to support the winch assembly 46. The position design of the winch platform 44 ensures an effective connection between the winch assembly 46 and the pull-out assembly 31, while not affecting the operation of other components.

[0074] The fixed pulley assembly 45 includes one or more fixed pulleys 453. These fixed pulleys 453 are used to change the direction of the wire rope 47 so that it can extend from the hoisting assembly 46 into the lifting channel 111 and ultimately connect to the extraction assembly 31. The arrangement of the fixed pulley assembly 45 not only reduces the friction of the wire rope 47, but also ensures the correctness and stability of its path.

[0075] The winch assembly 46 is used to drive the winding and unwinding of the wire rope 47. The winch assembly 46 typically includes a motor, a reducer, and a drum, which provide power and control the movement of the wire rope 47. The wire rope 47 is wound around the drum. When the winch assembly 46 is started, it winds and unwinds the wire rope 47 by rotating the drum, thereby driving the extraction assembly 31 to move up and down along the lifting channel 111.

[0076] A portion of the wire rope 47 is wound around the drum of the winch assembly 46, then passes through the fixed pulley 453 in the fixed pulley assembly 45, through the lifting channel 111, and finally connects to the extraction assembly 31. This arrangement allows the wire rope 47 to accurately transmit the power of the winch assembly 46 to the extraction assembly 31 while maintaining tension.

[0077] It should be noted that during operation, as the steel wire rope 47 is extended and retracted, the extraction assembly 31 is driven to move up and down along the lifting channel 111, thereby achieving the safe disassembly of the detector 20. This not only improves the reliability and safety of the system but also enhances the flexibility and precision of operation.

[0078] like Figure 7 and Figure 9 As shown, in some embodiments of the high radioactive material shielding transfer mechanism 10, the fixed pulley assembly 45 includes a weighing element 451, a fixed pulley seat 452, a fixed pulley 453, and an observation camera 454. The weighing element 451 is mounted on the top platform 43, the fixed pulley seat 452 is mounted on the weighing element 451, the fixed pulley 453 is rotatably mounted on the fixed pulley seat 452, and the steel wire rope 47 is wound around the fixed pulley 453.

[0079] Understandably, the weighing element 451 is used to measure the load weight borne by the wire rope 47 passing through the fixed pulley 453. The weighing element 451 can be an electronic scale or other type of load cell, which can monitor the weight changes of the pull-out assembly 31 and its connected detector 20 in real time, and feed the data back to the control system so as to adjust the operating parameters or issue warnings in a timely manner.

[0080] The fixed pulley seat 452 provides stable support, ensuring that the fixed pulley 453 can rotate freely in the correct position without affecting the accuracy of the weighing element 451. The fixed pulley 453 is used to change the direction of the wire rope 47, allowing it to extend from the hoisting assembly 46 into the lifting channel 111 and ultimately connect to the extraction assembly 31. The presence of the fixed pulley 453 reduces the friction of the wire rope 47, ensuring the correctness and stability of its path, while also protecting the wire rope 47 from excessive wear.

[0081] The observation camera 454 is used to monitor the operating status of the wire rope 47 and its surrounding environment in real time. The observation camera 454 can capture video or images and transmit them to the control center, enabling operators to remotely monitor the entire dismantling process, ensure that everything proceeds as planned, and take emergency measures when necessary.

[0082] like Figure 7 and Figure 10 As shown, in some embodiments of the high radioactive material shielding and transfer mechanism 10, the hoisting platform 44 is provided with a clearance hole 441, and the shielding cylinder 11 is provided with a clearance hole 441.

[0083] Understandably, the clearance hole 441 is used to allow the shielding cylinder 11 to pass through it. This allows the hoisting platform 44 to be securely installed between the two sides of the shielding cylinder 11 without obstructing its function or movement path. The size and shape of the clearance hole 441 are customized according to the specific specifications of the shielding cylinder 11 to ensure a tight fit between the two.

[0084] It should be noted that, on the one hand, by opening clearance holes 441 on the hoisting platform 44, the shielding cylinder 11 can directly pass through the hoisting platform 44, thereby reducing the space occupied by the entire system and improving the compactness of the overall layout. This not only helps save installation space but also simplifies the assembly and maintenance process of the system. On the other hand, the connection between the hoisting platform 44 and the shielding cylinder 11 through the clearance holes 441 provides additional stability. As the central axis of the system, the design of the shielding cylinder 11 with clearance holes 441 ensures that the position of the hoisting platform 44 is fixed, avoiding shaking caused by external vibrations or other factors, and enhancing the overall stability of the system. In addition, the design of the clearance holes 441 ensures that the lifting channel 111 is unobstructed and will not affect the up and down movement of the extraction assembly 31 due to the presence of the hoisting platform 44. This ensures that the disassembly process of the detector 20 can be carried out smoothly without any obstruction.

[0085] like Figure 10 As shown, in some embodiments of the high-radiation material shielding transfer mechanism 10, the hoisting assembly 46 includes a hoisting motor 461, a drum 462, a counterweight box 463, a spare handwheel 464, and an in-situ detection sensor 465. The hoisting motor 461 and the counterweight box 463 are symmetrically arranged on the hoisting platform 44. The hoisting motor 461 is driven and connected to the drum 462. The counterweight box 463 is arranged on the hoisting platform 44. The spare handwheel 464 is detachably arranged on the hoisting platform 44. The hoisting motor 461 has a handwheel insertion hole 4611.

[0086] Understandably, the winch motor 461 serves as the power source, driving the drum 462 to rotate. The winch motor 461 is typically an electric motor. To provide better balance, the winch motor 461 and the counterweight box 463 are symmetrically arranged on the winch platform 44.

[0087] Drum 462 is used for winding and releasing wire rope 47. The design of drum 462 ensures that wire rope 47 can be wound evenly on it, avoiding knots or loosening, and ensuring stable operation of the system.

[0088] The counterweight box 463 is located symmetrically to the winch motor 461. The counterweight box 463 contains appropriate counterweights to balance the weight of the winch motor 461, reduce vibration during system operation, and improve overall stability. Furthermore, the counterweights also help reduce the workload of the winch motor 461, extending its service life.

[0089] The provision of a spare handwheel 464 allows operators to manually operate the winch assembly 46 by inserting the spare handwheel 464 through the handwheel socket 4611 in the event of a power system failure or other emergency. This design provides additional safety, ensuring that the detector 20 can still be disassembled even if the automatic control system fails.

[0090] The handwheel socket 4611 is used to accept the insertion of the spare handwheel 464. This socket design ensures that the spare handwheel 464 can be securely connected to the hoist motor 461 and effectively transmit manual drive.

[0091] The in-situ detection sensor 465 is used to monitor the status of the hoist assembly 46 in real time. The in-situ detection sensor 465 can detect parameters such as the position and speed of the drum 462 and the tension of the wire rope 47, and feed the data back to the control system so that the operating parameters can be adjusted in a timely manner or a warning can be issued.

[0092] like Figure 10 As shown, in some embodiments of the high radioactive material shielding transfer mechanism 10, the drum 462 is a double-drum body with two steel wire ropes 47 wound on it. The two steel wire ropes 47 are respectively wound around the fixed pulley 453 and connected to the extraction assembly 31 via the lifting channel 111.

[0093] Understandably, the drum 462 is configured as a double-drum structure, meaning two drums are mounted on one hoisting assembly 46. Each drum is wound with a steel wire rope 47, thus the two steel wire ropes 47 jointly drive the extraction assembly 31, increasing the load capacity of the lifting device 4. Simultaneously, it allows the extraction assembly 31 to be subjected to tension from two different directions during movement, ensuring greater stability during lifting and reducing the risk of skewing or rotation.

[0094] like Figures 1 to 4 As shown, in some embodiments of the high-radioactivity shielding transfer mechanism 10, the high-radioactivity shielding transfer mechanism 10 also includes a lifting device 5. For example... Figure 7 and Figure 9 As shown, the lifting device 5 includes a lifting body 51, a lifting shaft 52 and a connecting pin 53. The lifting shaft 52 and the connecting pin 53 are respectively installed on the lifting body 51. The connecting pin 53 is connected to the top platform 43. The lifting shaft 52 is used for connecting lifting equipment.

[0095] Understandably, the lifting device body 51 provides the mounting positions for the lifting shaft 52 and the connecting pin 53. The lifting shaft 52 is used for connection to external lifting equipment (such as cranes, hoists, etc.). The installation of the lifting shaft 52 ensures a firm connection during the lifting process, can withstand large tensile forces, and prevents slippage or breakage. The connecting pin 53 is used to connect the lifting device 5 to the top platform 43. Through the fixing action of the connecting pin 53, the lifting device 5 can be firmly attached to the top platform 43, thereby allowing the entire high-radiation material shielding transfer mechanism 10 to be lifted by the lifting device 5 for further use.

[0096] like Figure 3 and Figure 7As shown, in some embodiments of the high radioactivity shielding and transfer mechanism 10, the shielding device 1 also includes an alignment seat 12, a mounting seat 13, and several alignment posts 14. The alignment seat 12 is provided with several alignment holes 121. The alignment seat 12 is set on the shielding cylinder 11. The mounting seat 13 is set in the core pool. Each alignment post 14 is set on the mounting seat 13. Each alignment post 14 is detachably inserted into each alignment hole 121.

[0097] Understandably, the alignment hole 121 on the alignment seat 12 is used to receive the alignment post 14 from the mounting base 13. The alignment seat 12 ensures that the shielding device 1 can accurately dock with the core pool and provides a stable connection base.

[0098] Mounting base 13 is used to fix alignment post 14. The setting of alignment post 14 ensures quick and accurate alignment between shielding device 1 and core pool, and can achieve detachable connection for easy maintenance and replacement.

[0099] The implementation of this invention has the following beneficial effects:

[0100] This invention relates to a high-radiation material shielding and transport mechanism, which, by setting up a shielding device including a shielding cylinder and a lifting channel, ensures that personnel can stay away from the radiation source during the replacement of detector components, effectively reducing the risk of radiation exposure and protecting the health and safety of operators.

[0101] Secondly, the present invention also includes a detector connection device, including a design of a connecting ring, a connecting cylinder and a locking element, which enables the detector end to be quickly and stably locked or released, simplifying the operation process of disassembling the detector and improving work efficiency.

[0102] The combined use of the extraction and lifting devices enables automated extraction and installation of the detector. The extraction assembly can slide within the lifting channel and is detachably connected to the detector connection device via the extraction connecting assembly. Combined with the lifting device drive, this ensures smooth extraction of the detector and greatly facilitates detector disassembly.

[0103] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the embodiments of the present invention can be adjusted in order, combined, and deleted according to actual needs, and the modules in the device of the embodiments of the present invention can be combined, divided, and deleted according to actual needs.

[0104] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A high-radiation material shielding and transfer mechanism, characterized in that, include: The shielding device includes a shielding cylinder, and a lifting channel is provided inside the shielding cylinder; A detector connection device includes a connecting ring, a connecting cylinder, and a locking member. The connecting ring is disposed on the connecting cylinder, and the locking member is movably disposed on the connecting cylinder. The locking member and the connecting cylinder are used together to close and lock the end of the detector. A pulling device includes a pulling component and a pulling connecting component. The pulling component is slidably disposed on the lifting channel, and the pulling connecting component is disposed on the pulling component. The pulling connecting component is detachably connected to the connecting lifting ring. and A lifting device is provided on the shielding cylinder and is detachably connected to the extraction assembly. The lifting device drives the extraction assembly to slide along the lifting channel, thereby the extraction connection assembly drives the detector connection device to move, and then the detector connection device extracts the detector. The extraction assembly includes an extraction body, a guide wheel, a wire rope connector, and an extraction chain, wherein the guide wheel, the wire rope connector, and the extraction chain are respectively disposed on the extraction body; The extraction body is slidably disposed within the lifting channel, the guide wheel is slidably disposed on the inner wall of the lifting channel, a steel wire rope is disposed on the steel wire rope connector, the steel wire rope is connected to the lifting device, and the extraction chain is detachably connected to the connecting ring. The lifting device drives the extraction body to slide along the lifting channel via the steel wire rope.

2. The high-radioactivity shielding and transfer mechanism according to claim 1, characterized in that, At least one guide groove is provided on the side wall of the lifting channel; The guide wheel includes a plurality of lifting positioning wheels and a plurality of horizontal limiting wheels. At least one mounting groove is provided on the side wall of the extraction body, and at least one lifting positioning wheel and at least one horizontal limiting wheel are provided in each mounting groove. Both the lifting positioning wheel and the horizontal limiting wheel are slidably disposed in the guide groove. The lifting positioning wheel is movably abutted against the bottom of the guide groove, and the horizontal limiting wheel is movably abutted against two opposite groove walls inside the guide groove.

3. The high-radioactivity shielding and transfer mechanism according to claim 1, characterized in that, The lifting device includes a lifting limit switch and a winch assembly. The lifting limit switch is located at the end of the shielding cylinder and is electrically connected to the winch assembly. The wire rope is wound around the winch assembly, and the winch assembly drives the wire rope to wind up and unwind. The extraction assembly also includes a limiting rod, which is disposed on the extraction body and configured to press and trigger the lifting limit switch when driven by the extraction body.

4. The high-radioactivity material shielding and transfer mechanism according to claim 1, characterized in that, The lifting device includes a top platform, a winch platform, a fixed pulley assembly, a winch assembly, and a wire rope; The top platform is located at the end of the shielding cylinder, the winch platform is located between the two ends of the shielding cylinder, the fixed pulley assembly is located on the top platform, the winch assembly is located on the winch platform, at least a portion of the wire rope is wound around the winch assembly, the wire rope passes through the fixed pulley and through the lifting channel and is connected to the extraction assembly.

5. The high-radioactivity material shielding and transfer mechanism according to claim 4, characterized in that, The fixed pulley assembly includes a weighing component, a fixed pulley seat, a fixed pulley, and an observation camera. The weighing component is mounted on the top platform, the fixed pulley seat is mounted on the weighing component, the fixed pulley is rotatably mounted on the fixed pulley seat, and the steel wire rope is wound around the fixed pulley.

6. The high-radioactivity shielding and transport mechanism according to claim 5, characterized in that, The hoisting platform is provided with a clearance hole, and the shielding cylinder passes through the clearance hole; and / or The winch assembly includes a winch motor, a drum, a counterweight box, a spare handwheel, and a position detection sensor. The winch motor and the counterweight box are symmetrically arranged on the winch platform. The winch motor is driven and connected to the drum. The counterweight box is located on the winch platform. The spare handwheel is detachably located on the winch platform. The winch motor has a handwheel insertion hole.

7. The high-radioactivity shielding and transfer mechanism according to claim 6, characterized in that, The drum is a double-drum body, with two steel wire ropes wound on each double-drum body. The two steel wire ropes are respectively wound around the fixed pulley and connected to the extraction assembly via the lifting channel.

8. The high-radioactivity shielding and transfer mechanism according to claim 4, characterized in that, The high-radiation material shielding and transfer mechanism also includes a lifting device, which includes a lifting body, a lifting shaft, and a connecting pin. The lifting shaft and the connecting pin are respectively disposed on the lifting body, the connecting pin is connected to the top platform, and the lifting shaft is used for connecting lifting equipment.

9. The high-radioactivity material shielding and transfer mechanism according to claim 1, characterized in that, The shielding device further includes an alignment seat, a mounting seat, and several alignment posts. The alignment seat has several alignment holes. The alignment seat is disposed on the shielding cylinder. The mounting seat is disposed in the core pool. Each alignment post is disposed on the mounting seat. Each alignment post is detachably inserted into each alignment hole.

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