High radiation shielding transfer mechanism

Abstract

The invention relates to a high radioactive substance shielding transfer mechanism which is provided with a shielding device which comprises a shielding cylinder and a lifting channel, so that a worker can be far away from a radioactive source in the process of replacing a detector assembly, the risk of radiation exposure is effectively reduced, and the health and safety of the operator are guaranteed. And secondly, a detector connecting device is further arranged, and the detector connecting device comprises a connecting hanging ring, a connecting cylinder and a locking piece, so that the end part of the detector can be quickly and stably locked or released, the operation process of dismounting the detector is simplified, and the working efficiency is improved. And the pulling device and the lifting device are combined for use, so that automatic extraction and installation of the detector are realized. The pulling assembly can slide in the lifting channel, is detachably connected with the detector connecting device through the pulling connecting assembly, and is matched with the driving of the lifting device, so that the stable pulling of the detector is ensured, and the dismounting of the detector is greatly facilitated.

Description

Technical Field

[0001] The present invention relates to the field of nuclear power, and particularly to a high-radiation shielding transfer mechanism. Background Art

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

[0003] However, with the increase in usage time, these detector components will gradually age and need to be replaced to ensure the accuracy and reliability of the monitoring data. Since the detector components are in a high-intensity radiation environment for a long time, they themselves will also carry a high level of radioactivity. Currently, when replacing the used detector components, the replacement method often fails to balance efficiency and safety. Especially during the process of pulling out the used detectors from the upper in-core structure of the pressure vessel, there is a lack of effective shielding means to protect the personnel participating in the operation from unnecessary radiation damage. In addition, the existing pulling-out devices are inconvenient to operate. Summary of the Invention

[0004] The present invention provides a high-radiation shielding transfer mechanism, which can solve the problems that the staff is easily exposed to radiation and the replacement operation is inconvenient during the process of replacing the detector components.

[0005] The present invention provides a high-radiation shielding transfer mechanism, which comprises:

[0006] A shielding device, including a shielding cylinder body, and a lifting channel is provided in the shielding cylinder body;

[0007] A detector connecting device, including a connecting lifting ring, a connecting cylinder and a locking member. The connecting lifting ring is arranged on the connecting cylinder, the locking member is movably arranged on the connecting cylinder, and the locking member and the connecting cylinder are jointly used to close and lock the end of the detector;

[0008] A pulling-out device, including a pulling-out assembly and a pulling-out connecting assembly. The pulling-out assembly is slidably arranged in the lifting channel, the pulling-out connecting assembly is arranged on the pulling-out assembly, and the pulling-out connecting assembly is detachably connected to the connecting lifting ring; and

[0009] Lifting device, the lifting device is arranged on the shielding cylinder body, the lifting device is detachably connected to the extraction assembly, the lifting device drives the extraction assembly to slide along the lifting channel, so that the extraction connection 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 main body, a guide wheel, a wire rope connecting piece and an extraction chain, and the guide wheel, the wire rope connecting piece and the extraction chain are respectively arranged on the extraction main body;

[0011] The extraction main body is slidably arranged in the lifting channel, the guide wheel is slidably arranged on the inner wall surface of the lifting channel, a wire rope is arranged on the wire rope connecting piece, the wire rope is connected to the lifting device, and the extraction chain is detachably connected to the connecting lifting ring;

[0012] The lifting device drives the extraction main body to slide along the lifting channel through the 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 installation groove is arranged on the side wall of the extraction main body, and at least one lifting positioning wheel and at least one horizontal limiting wheel are arranged in each installation groove;

[0015] Both the lifting positioning wheel and the horizontal limiting wheel are slidably arranged 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 in the guide groove.

[0016] Preferably, the lifting device includes a lifting limit switch and a hoisting assembly, the lifting limit switch is arranged at the end of the shielding cylinder body, the lifting limit switch is electrically connected to the hoisting assembly, the wire rope is wound around the hoisting assembly, and the hoisting assembly drives the wire rope to wind and unwind;

[0017] The extraction assembly further includes a limiting rod, the limiting rod is arranged on the extraction main body, and the limiting rod is configured to be able to abut and trigger the lifting limit switch under the drive of the extraction main body.

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

[0019] The top platform is arranged at the end of the shielding cylinder body, the hoisting platform is arranged between the two ends of the shielding cylinder body, the fixed pulley assembly is arranged on the top platform, the hoisting assembly is arranged on the hoisting platform, at least part of the steel wire rope is wound around the hoisting assembly, and the steel wire rope winds around the fixed pulley, passes through the lifting channel and is connected to the extraction assembly.

[0020] Preferably, the fixed pulley assembly includes a weighing member, a fixed wheel seat, a fixed pulley and an observation camera. The weighing member is arranged on the top platform, the fixed wheel seat is arranged on the weighing member, the fixed pulley is rotatably arranged on the fixed wheel seat, and the steel wire rope winds around the fixed pulley.

[0021] Preferably, the hoisting platform is provided with an avoidance hole, and the shielding cylinder body penetrates through the avoidance hole; and / or

[0022] The hoisting assembly includes a hoisting motor, a drum, a counterweight box, a spare handwheel and an in-position detection sensor. The hoisting motor and the counterweight box are symmetrically arranged on the hoisting platform. The hoisting motor is drivingly connected to the drum. The counterweight box is arranged on the hoisting platform. The spare handwheel is detachably arranged on the hoisting platform, and a handwheel jack is opened on the hoisting motor.

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

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

[0025] Preferably, the shielding device further includes an alignment seat, a mounting seat and a plurality of alignment columns. A plurality of alignment holes are opened on the alignment seat. The alignment seat is arranged on the shielding cylinder body. The mounting seat is arranged in the core pool. Each alignment column is arranged on the mounting seat, and each alignment column is detachably inserted into each alignment hole in a one-to-one correspondence.

[0026] Implementing the present invention has the following beneficial effects:

[0027] The present invention relates to a high-radiation shielding transfer mechanism. By providing a shielding device including a shielding cylinder body and a lifting channel, it is ensured that during the process of replacing the detector assembly, the staff can stay away from the radiation source, effectively reducing the risk of radiation exposure and ensuring the health and safety of the operators.

[0028] Secondly, the present invention also provides a detector connection device, including a connection ring, a connection cylinder and a locking member, which enables the end of the detector to be quickly and stably locked or released, simplifies the operation process of disassembling the detector, and improves work efficiency.

[0029] The combined use of the extraction device and the lifting device realizes the automatic extraction and installation of the detector. The extraction assembly can slide in the lifting channel and is detachably connected to the detector connection device through the extraction connection assembly. Driven by the lifting device, it ensures the smooth extraction of the detector and greatly facilitates the disassembly of the detector. Brief Description of the Drawings

[0030] By describing the exemplary embodiments of the present invention in more detail with reference to the accompanying drawings, the above and other objects, features and advantages of the present invention will become more apparent. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0031] Figure 1 is a schematic structural view of the high-radiation shielding transfer mechanism in some embodiments of the present invention;

[0032] Figure 2 is from another perspective Figure 1 a schematic structural view of the high-radiation shielding transfer mechanism shown;

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

[0034] Figure 4 is from another perspective Figure 3 an exploded view of the high-radiation shielding transfer mechanism shown;

[0035] Figure 5 is a schematic structural view of the detector connection device, the extraction device and the detector in some embodiments of the present invention;

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

[0037] Figure 7 is a schematic fracture structural view of the high-radiation shielding transfer mechanism in some embodiments of the present invention;

[0038] Figure 8 is a schematic structural view of the extraction device in some embodiments of the present invention;

[0039] Figure 9 is a schematic structural view of the lifting device and the hoisting device in some embodiments of the present invention;

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

[0041] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention will be more thorough and complete, and the scope of the present invention can be fully conveyed to those skilled in the art.

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

[0043] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0044] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

[0046] As Figures 1 to 6As shown in the figure, the high-radiation shielding transfer mechanism 10 includes a shielding device 1, a detector connection device 2, a drawing device 3, and a lifting device 4. The shielding device 1 is used for shielding radiation from radioactive substances (detector 20) on the one hand, and on the other hand, it also provides an installation position or moving space for the remaining devices. The detector connection device 2 is used to fix the end of the detector 20. The drawing device 3 is slidably arranged in the shielding device 1, and the drawing device 3 is detachably connected to the detector connection device 2. The lifting device 4 is drivingly connected to the drawing device 3, and the lifting device 4 is used to drive the drawing device 3 to move within the shielding device 1, so that the drawing device 3 drives the detector 20 to move through the detector connection device 2 (the detector 20 is shown in Figure 5 and Figure 6 ), and then the disassembly of the detector 20 is completed.

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

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

[0049] It can be understood that the connecting sling 21 is used to connect the drawing device 3 and the detector connection 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 arranged on the connecting cylinder 22 and works together with the connecting cylinder 22 to ensure that the end of the detector 20 is closed and locked, preventing accidental detachment during the disassembly process.

[0050] As Figure 5 , Figure 6 and Figure 8 shown, the drawing device 3 includes a drawing assembly 31 and a drawing connection assembly 32. The drawing assembly 31 is slidably arranged in the lifting channel 111, the drawing connection assembly 32 is arranged on the drawing assembly 31, and the drawing connection assembly 32 is detachably connected to the connecting sling 21.

[0051] It can be understood that the drawing assembly 31 can slide up and down along the lifting channel 111. The drawing connection assembly 32 is installed on the drawing assembly 31 and is connected to the connecting sling 21 in a detachable manner, so as to be easily separated or combined when needed.

[0052] As Figures 1 to 6As shown in the figure, the lifting device 4 is arranged on the shielding cylinder body 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, so that the extraction connection assembly 32 drives the detector connection device 2 to move, and then the detector connection device 2 extracts the detector.

[0053] It can be understood that when the lifting device 4 is started, the lifting device 4 can drive the extraction connection assembly 32 to move, and then drive the detector connection device 2, and finally realize the extraction action of the detector 20.

[0054] Specifically, the extraction connection assembly 32 can be configured as a shackle or other structures that can be connected to the sling. The extraction connection assembly 32 is a prior art.

[0055] As Figures 3 to 8 shown, in some embodiments of the high-radiation shielding transfer mechanism 10, the extraction assembly 31 includes an extraction main body 311, a guide wheel 312, a wire rope connector 313 and an extraction chain 314. The guide wheel 312, the wire rope connector 313 and the extraction chain 314 are respectively arranged on the extraction main body 311;

[0056] The extraction main body 311 is slidably arranged in the lifting channel 111. The guide wheel 312 is slidably arranged on the inner wall surface of the lifting channel 111. A wire rope 47 is arranged on the wire rope connector 313. The wire rope 47 is connected to the lifting device 4. The extraction chain 314 is detachably connected to the connecting sling 21. The lifting device 4 drives the extraction main body 311 to slide along the lifting channel 111 through the wire rope 47.

[0057] It can be understood that the extraction main body 311 is slidably arranged in the lifting channel 111 and bears the guide wheel 312, the wire rope connector 313 and the extraction chain 314. The guide wheel 312 is installed on the extraction main body 311 and contacts the inner wall surface of the lifting channel 111. The guide wheel 312 not only reduces the friction of the extraction main body 311 in the lifting channel 111, but also ensures its smooth sliding along the 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 main body 311. In this way, the lifting device 4 can drive the extraction main body 311 to move up and down along the lifting channel 111 through the wire rope 47. When the extraction main body 311 is driven by the lifting device 4, the extraction chain 314 moves accordingly, and then pulls the detector connection device 2 through the connecting sling 21, and finally completes the extraction action of the detector 20.

[0058] It should be noted that when the detector 20 needs to be disassembled, the lifting device 4 is activated and applies a pulling force to the extraction main body 311 through the steel wire rope 47. Due to the presence of the guide wheel 312, the extraction main body 311 can smoothly slide within the lifting channel 111 without deviating from the track. Meanwhile, the steel wire rope connecting piece 313 ensures the effective transmission of force, enabling the extraction main body 311 to accurately respond to the actions of the lifting device 4. Finally, as the extraction main body 311 moves, the extraction chain 314 drives the detector connecting device 2 to move together, thereby achieving the safe disassembly of the detector 20 from the core.

[0059] As Figure 3 shown, in some implementations of the high-radiation 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 main body 311 slides smoothly along a straight path.

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

[0062] Both the lifting positioning wheel 3121 and the horizontal limiting wheel 3122 are slidably disposed in the guide groove 112. The lifting positioning wheel 3121 is movably abutted against the bottom of the guide groove 112, and the horizontal limiting wheel 3122 is movably abutted against two opposite groove walls within 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 to ensure that the extraction main body 311 can vertically lift and lower without tilting or deviating. The horizontal limiting wheel 3122 is also installed in the installation groove 3111, but it contacts two opposite groove walls within the guide groove 112. The function of the horizontal limiting wheel 3122 is to prevent the extraction main body 311 from shaking in the horizontal direction, thereby maintaining its stability during the entire movement process.

[0064] It should be noted that when the extraction main body 311 moves along the lifting channel 111 driven by the lifting device 4, the lifting positioning wheel 3121 rolls along the bottom of the guiding groove 112 to ensure that the extraction main body 311 rises or falls along a predetermined trajectory. At the same time, the horizontal limiting wheel 3122 abuts against the two side walls of the guiding groove 112, effectively preventing any displacement of the extraction main body 311 in the horizontal direction and ensuring the stable operation of the entire system. In this way, not only the moving accuracy of the extraction assembly 31 is improved, but also the reliability and safety of the mechanism operation are enhanced. Especially in the case of handling highly radioactive substances, the risks that may occur during the operation can be minimized to the greatest extent.

[0065] As Figure 7 and Figure 9 shown, in some embodiments of the high-radiation shielding transfer mechanism 10, the lifting device 4 includes a lifting limit switch 41 and a hoisting assembly 46. The lifting limit switch 41 is arranged at the end of the shielding cylinder 11. The lifting limit switch 41 is electrically connected to the hoisting assembly 46. The steel wire rope 47 is wound around the hoisting assembly 46, and the hoisting assembly 46 drives the steel wire rope 47 to wind and unwind.

[0066] Further referring to Figure 5 and Figure 8 , the extraction assembly 31 further includes a limiting rod 315. The limiting rod 315 is arranged on the extraction main body 311 and is configured to be able to abut and trigger the lifting limit switch 41 driven by the extraction main body 311.

[0067] It can be understood that the lifting limit switch 41 is installed at the end of the shielding cylinder 11 to detect the position of the extraction assembly 31 and prevent it from exceeding the safe operation range. The lifting limit switch 41 is connected to the hoisting assembly 46 through electrical connection and can automatically control the action of the hoisting assembly 46 according to the position of the extraction assembly 31.

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

[0069] It should be noted that during the operation, the hoisting assembly 46 winds and unwinds the steel wire rope 47 according to the instruction, and then drives the extraction main body 311 to move up and down along the lifting channel 111. As the extraction main body 311 rises or falls, the limiting rod 315 also moves accordingly. When the limiting rod 315 reaches the position of the lifting limit switch 41, it will trigger the switch and cut off the power input of the hoisting assembly 46 to prevent the extraction assembly 31 from exceeding the safety limit.

[0070] As Figure 7 , Figure 9 andFigure 10 As shown, in some embodiments of the high-radiation 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 steel wire rope 47;

[0071] The top platform 43 is disposed at the end of the shielding cylinder 11, the hoisting platform 44 is disposed between the two ends of the shielding cylinder 11, the fixed pulley assembly 45 is disposed on the top platform 43, the hoisting assembly 46 is disposed on the hoisting platform 44, at least part of the steel wire rope 47 is wound around the hoisting assembly 46, and the steel wire rope 47 passes around 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 installation base of the fixed pulley assembly 45. It provides a stable support point for the entire lifting system and ensures that the steel wire rope 47 can pass smoothly.

[0073] The hoisting platform 44 is located between the two ends of the shielding cylinder 11, and the hoisting platform 44 is used to carry the hoisting assembly 46. The position design of the hoisting platform 44 ensures an effective connection between the hoisting assembly 46 and the extraction 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 steel wire rope 47 so that it can extend from the hoisting assembly 46 into the lifting channel 111 and finally be connected to the extraction assembly 31. The setting of the fixed pulley assembly 45 not only reduces the friction of the steel wire rope 47 but also ensures the correctness and stability of its path.

[0075] The hoisting assembly 46 is used to drive the steel wire rope 47 to wind and unwind. The hoisting assembly 46 generally includes parts such as a motor, a speed reducer, and a drum, which are used to provide power and control the movement of the steel wire rope 47. The steel wire rope 47 is wound around the drum. When the hoisting assembly 46 is started, it winds and unwinds the steel wire rope 47 through the rotation of the drum, thereby driving the extraction assembly 31 to move up and down along the lifting channel 111.

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

[0077] It should be noted that during the operation process, as the steel wire rope 47 winds and unwinds, the extraction assembly 31 is driven to move up and down along the lifting channel 111, thereby realizing the safe disassembly of the detector 20. In this way, not only the reliability and safety of the system are improved, but also the flexibility and precision of the operation are enhanced.

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

[0079] Understandably, the weighing member 451 is used to measure the load weight borne by the steel wire rope 47 passing through the fixed pulley 453. The weighing member 451 can be an electronic scale or other types of weighing sensors, which can monitor the weight changes of the extraction assembly 31 and the detector 20 connected thereto in real time, and feed the data back to the control system to timely adjust the operation parameters or issue warnings.

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

[0081] The observation camera 454 is used to monitor the running state of the steel wire rope 47 and the surrounding environment in real time. The observation camera 454 can capture videos or images and transmit them to the control center, enabling the operator to remotely monitor the entire disassembly process, ensure that everything proceeds as planned, and take emergency measures when necessary.

[0082] As Figure 7 and Figure 10 shown, in some embodiments of the high-radiation shielding transfer mechanism 10, the hoisting platform 44 is provided with an avoidance hole 441, and the shielding cylinder 11 passes through the avoidance hole 441.

[0083] Understandably, the avoidance hole 441 is used to allow the shielding cylinder 11 to pass through. Thus, the hoisting platform 44 can be stably installed between the two sides of the shielding cylinder 11 without interfering with the function or movement path of the shielding cylinder 11. The size and shape of the avoidance 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 an avoidance hole 441 on the hoisting platform 44, the shielding cylinder 11 can directly pass through the hoisting platform 44, thereby reducing the occupied space of the entire system and improving the compactness of the overall layout. This not only helps to 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 avoidance hole 441 provides additional stability. As the central axis of the system, the design of the shielding cylinder 11 passing through the avoidance hole 441 ensures the fixed position of the hoisting platform 44, avoiding shaking caused by external vibration or other factors and enhancing the overall stability of the system. In addition, the design of the avoidance hole 441 ensures the unobstructed passage of the lifting channel 111, and the up and down movement of the extraction assembly 31 will not be affected by the presence of the hoisting platform 44. This ensures that the disassembly process of the detector 20 can proceed smoothly without any hindrance.

[0085] As Figure 10 shown, in some embodiments of the high-radiation 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-position 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 drivingly 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. A handwheel jack 4611 is provided on the hoisting motor 461.

[0086] It can be understood that the hoisting motor 461, as the power source, drives the drum 462 to rotate. The hoisting motor 461 is usually an electric motor. For better balance, the hoisting motor 461 and the counterweight box 463 are symmetrically arranged on the hoisting platform 44.

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

[0088] The counterweight box 463 is located at the symmetrical position of the hoisting motor 461. The counterweight box 463 is filled with appropriate counterweights to balance the weight of the hoisting motor 461, reduce the vibration of the system during operation and improve the overall stability. In addition, the counterweight can also help to reduce the working load of the hoisting motor 461 and extend its service life.

[0089] The provision of the spare handwheel 464 enables the operator to insert the spare handwheel 464 through the handwheel jack 4611 and manually operate the hoisting assembly 46 in case of power system failure or other emergencies. This design provides additional safety protection to ensure that the disassembly work of the detector 20 can still be completed even when the automatic control system fails.

[0090] The handwheel jack 4611 is used to receive the insertion of the spare handwheel 464. The design of this jack ensures that the spare handwheel 464 can be stably connected to the winch motor 461 and effectively transmit manual drive force.

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

[0092] As Figure 10 shown, in some implementations of the high-radiation shielding transfer mechanism 10, the drum 462 is a double-connected cylinder. Two wire ropes 47 are respectively wound on the double-connected cylinder. The two wire ropes 47 respectively pass around the fixed pulley 453 and are connected to the extraction assembly 31 via the lifting channel 111.

[0093] It can be understood that the drum 462 is set as a double-connected cylinder structure, that is, two drums are installed on one winch assembly 46. Each drum winds one wire rope 47 respectively. In this way, the extraction assembly 31 is jointly driven by the two wire ropes 47, improving the load capacity of the lifting device 4. At the same time, it also enables the extraction assembly 31 to receive pulling forces from two different directions during movement, ensuring that the extraction assembly 31 is more stable during lifting and reducing the risk of deflection or rotation.

[0094] As Figures 1 to 4 shown, in some implementations of the high-radiation shielding transfer mechanism 10, the high-radiation shielding transfer mechanism 10 further includes a lifting device 5. As Figure 7 and Figure 9 shown, the lifting device 5 includes a sling body 51, a lifting shaft 52, and a connecting pin 53. The lifting shaft 52 and the connecting pin 53 are respectively arranged on the sling body 51. The connecting pin 53 is connected to the top platform 43, and the lifting shaft 52 is for connecting to a lifting device.

[0095] It can be understood that the sling body 51 provides the installation positions for the lifting shaft 52 and the connecting pin 53. The lifting shaft 52 is used for connecting to an external lifting device (such as a crane, a hoist, etc.). The setting of the lifting shaft 52 ensures a firm connection during the lifting process, can withstand a large pulling force, and prevents slipping or breaking. The connecting pin 53 is used to connect the lifting device 5 to the top platform 43. Through the fixing effect of the connecting pin 53, the lifting device 5 can be stably attached to the top platform 43, so that the entire high-radiation shielding transfer mechanism 10 can be lifted by the lifting device 5 for further use.

[0096] As Figure 3 and Figure 7As shown, in some embodiments of the high-radiation shielding transfer mechanism 10, the shielding device 1 further includes an alignment seat 12, a mounting seat 13, and a number of alignment posts 14. A number of alignment holes 121 are provided on the alignment seat 12. The alignment seat 12 is disposed on the shielding cylinder 11, the mounting seat 13 is disposed in the core pool, and each alignment post 14 is disposed on the mounting seat 13. Each alignment post 14 is detachably inserted into each alignment hole 121 in a one-to-one correspondence.

[0097] Understandably, the alignment holes 121 on the alignment seat 12 are used to receive the alignment posts 14 from the mounting seat 13. The setting of the alignment seat 12 ensures that the shielding device 1 can be accurately docked with the core pool and provides a stable connection foundation.

[0098] The mounting seat 13 is used to fix the alignment posts 14. The setting of the alignment posts 14 ensures quick and accurate alignment between the shielding device 1 and the core pool, and a detachable connection can be achieved, which is convenient for maintenance and replacement.

[0099] Implementing the present invention has the following beneficial effects:

[0100] The present invention relates to a high-radiation shielding transfer mechanism, which, by providing a shielding device including a shielding cylinder and a lifting channel, ensures that during the process of replacing the detector assembly, the staff can stay away from the radiation source, effectively reducing the risk of radiation exposure and protecting the health and safety of the operators.

[0101] Secondly, the present invention also provides a detector connection device, including the design of a connection sling, a connection cylinder, and a locking member, enabling the end of the detector 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 device and the lifting device realizes the automatic extraction and installation of the detector. The extraction assembly can slide in the lifting channel and is detachably connected to the detector connection device through the extraction connection assembly. With the drive of the lifting device, it ensures the smooth extraction of the detector, greatly facilitating the disassembly of the detector.

[0103] The solution of the present invention has been described in detail above with reference to the drawings. In the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily essential to the present invention. In addition, it can be understood that the steps in the method embodiments of the present invention can be adjusted, combined, and deleted according to actual needs, and the modules in the device embodiments of the present invention can be combined, divided, and deleted according to actual needs.

[0104] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A shielding and transporting mechanism for highly radioactive materials, characterized in that: include: The shielding device comprises a shielding cylinder, wherein a lifting channel is provided in the shielding cylinder; The detector connection device comprises a connection ring, a connection tube and a locking piece, wherein the connection ring is arranged on the connection tube, the locking piece is movably arranged on the connection tube, and the locking piece and the connection tube are used together to close and lock the end of the detector; The extraction device comprises an extraction assembly and an extraction connection assembly, wherein the extraction assembly is slidably arranged in the lifting channel, the extraction connection assembly is arranged in the extraction assembly, and the extraction connection assembly is detachably connected to the connection ring; and A lifting device is arranged on the shielding cylinder, and the lifting device is detachably connected to the pulling assembly. The lifting device drives the pulling assembly to slide along the lifting channel, so that the pulling connection assembly drives the detector connecting device to move, and then the detector connecting device pulls out the detector.

2. The high-radiation material shielding and transporting mechanism according to claim 1, characterized in that: The extraction assembly comprises 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 arranged on the extraction body; The extraction body is slidably disposed in the lifting channel, the guide wheel is slidably disposed on the inner wall surface 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 drawing body to slide along the lifting channel through the steel wire rope.

3. The high-radiation material shielding and transporting mechanism according to claim 2, 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 and 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 and positioning wheel and at least one horizontal limiting wheel are provided in each of the mounting grooves. The lifting positioning wheel and the horizontal limiting wheel are both slidably arranged in the guide groove, the lifting positioning wheel movably abuts against the groove bottom of the guide groove, and the horizontal limiting wheel movably abuts against two opposite groove walls in the guide groove.

4. The high-radiation material shielding and transporting mechanism according to claim 2, characterized in that: The lifting device comprises a lifting limit switch and a winch assembly, wherein the lifting limit switch is arranged at the end of the shielding cylinder, the lifting limit switch is electrically connected to the winch assembly, the steel wire rope is wound around the winch assembly, and the winch assembly drives the steel wire rope to be retracted and unreeled; The extraction assembly further comprises a limit rod, which is arranged on the extraction body and configured to support and trigger the lifting limit switch under the drive of the extraction body.

5. The high-radiation material shielding and transporting mechanism according to claim 1, characterized in that: The lifting device comprises a top platform, a hoisting platform, a fixed pulley assembly, a hoisting assembly and a wire rope; The top platform is arranged at the end of the shielding cylinder, the hoisting platform is arranged between the two ends of the shielding cylinder, the fixed pulley assembly is arranged on the top platform, the hoisting assembly is arranged on the hoisting platform, at least a part of the wire rope is wound on the hoisting assembly, the wire rope is wound around the fixed pulley and passes through the lifting channel and is connected to the extraction assembly.

6. The high-radiation material shielding and transporting mechanism according to claim 5, characterized in that: The fixed pulley assembly includes a weighing piece, a fixed wheel seat, a fixed pulley and an observation camera. The weighing piece is arranged on the top platform, the fixed wheel seat is arranged on the weighing piece, the fixed pulley is rotatably arranged on the fixed wheel seat, and the wire rope is wound around the fixed pulley.

7. The high-radiation material shielding and transporting mechanism according to claim 5, characterized in that: The hoisting platform is provided with a position avoidance hole, and the shielding cylinder is provided with the position avoidance hole; and / or The winch assembly includes a winch motor, a drum, a counterweight box, a spare handwheel and an in-position detection sensor. The winch motor and the counterweight box are symmetrically arranged on the winch platform. The winch motor is drive-connected to the drum, the counterweight box is arranged on the winch platform, the spare handwheel is detachably arranged on the winch platform, and a handwheel socket is provided on the winch motor.

8. The high-radiation material shielding and transporting mechanism according to claim 7, characterized in that: The reel is a double-jointed cylinder body, on which two steel wire ropes are respectively wound, and the two steel wire ropes are respectively wound around the fixed pulley and connected to the drawing assembly via the lifting channel.

9. The high-radiation material shielding and transporting mechanism according to claim 5, characterized in that: The high-radiation material shielding and transport mechanism also includes a lifting device, which includes a lifting device body, a lifting shaft and a connecting pin. The lifting shaft and the connecting pin are respectively arranged on the lifting device body, the connecting pin is connected to the top platform, and the lifting shaft is used for connecting the lifting equipment.

10. The high-radiation material shielding and transporting mechanism according to claim 1, characterized in that: The shielding device also includes an alignment seat, a mounting seat and a plurality of alignment columns. The alignment seat is provided with a plurality of alignment holes. The alignment seat is arranged on the shielding cylinder, and the mounting seat is arranged in the core pool. Each of the alignment columns is arranged on the mounting seat, and each of the alignment columns can be detachably inserted into each of the alignment holes in a one-to-one correspondence.

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