Radioactive waste transfer device

Abstract

The invention relates to the technical field of radioactive waste treatment, in particular to a radioactive waste transfer device which solves the problem that due to design defects of an existing radioactive waste barrel transfer device, a container is prone to displacement / inclination due to inertia during acceleration / deceleration in the transfer process. The radioactive waste barrel is arranged on the transfer plate; the at least two fixing pieces are used for limiting the position of the radioactive waste barrel, and each fixing piece has an initial state and a fixed state; a loading station and an unloading station are arranged at the two ends of the moving track respectively, the transfer plate is arranged on the moving track, and the moving track is used for driving the transfer plate to reciprocate along the moving track; fixing force is applied to the radioactive waste barrel through mechanical linkage, and inertial displacement is effectively resisted.

Description

Technical Field

[0001] The present invention relates to the technical field of radioactive waste treatment, and in particular to a radioactive waste transfer device. Background Art

[0002] With the rapid development of nuclear energy technology, the safe transport of radioactive waste has become a core component of nuclear facility operations and maintenance. Traditional transfer devices often use a rollout conveyor to transport waste barrels. For example, Chinese Patent Publication No. CN118753731A describes a radioactive waste transport system and method. The proposed solution involves installing a pre-set transfer track on the ground in the radioactive waste storage area outside the hot chamber. One end of the pre-set transfer track connects to the hot chamber rollout conveyor via the transfer device, while the other end extends below the lifting device. Shielding and loading devices are located at the end of the track. This creates a complete transport route for radioactive waste, minimizing the risk of exposure to personnel during transport. However, when using the hot chamber rollout conveyor to transport waste barrels over long distances (distances beyond the reach of a robotic arm), inertia can easily cause the containers to shift or tilt during acceleration and deceleration. Summary of the Invention

[0003] Therefore, it is necessary to provide a radioactive waste transfer device to solve the problem that due to design defects of the existing radioactive waste barrel transfer device, the container is easily displaced / tilted due to inertia when accelerating / decelerating during the transfer process.

[0004] To achieve the above objectives, the inventors provide a radioactive waste transfer device, comprising: The transfer plate has a transverse limit rail and a longitudinal limit rail provided on its bearing surface; Radioactive waste barrels are placed on the transfer plate; At least two fixing members are used to limit the position of the radioactive waste barrel. At least one fixing member is provided on the transverse limit rail and the longitudinal limit rail. Each fixing member has: Initial state: the fixing member maintains a distance from the radioactive waste barrel, allowing the radioactive waste barrel to move freely; Fixed state: the fixing member contacts the radioactive waste barrel and applies a clamping force; A movable track, with a loading station and an unloading station at both ends respectively, the transfer plate is arranged on the movable track, and the movable track is used to drive the transfer plate to reciprocate along the movable track; A loading section curved plate, provided at the loading station, having a continuous curved surface inclined inwardly, and used for pushing each of the fixing members into a fixed state during the acceleration phase of the transfer plate; Unloading section curved plate: It is arranged at the unloading station and has a continuous curved surface inclined toward the outside, and is used to release the fixed state of each of the fixing parts during the deceleration stage of the transfer plate.

[0005] Furthermore, it also includes: A position detection module configured to provide real-time feedback of a position signal of the transfer plate on the moving track; The control module is in communication with the moving track and the position detection module and is configured to: When the transfer plate moves to the loading station, the mobile track is controlled to drive the transfer plate to execute the motion curve of accelerating to the rated speed, running at a constant speed and decelerating to stop in sequence. During the deceleration and stopping stage, the deceleration value is dynamically adjusted based on the real-time feedback from the position detection module so that the speed of the transfer plate drops to zero when it reaches the unloading station.

[0006] Furthermore, it also includes: a weight sensor, disposed below the bearing surface of the transfer plate and in communication with the control module, for detecting the weight data of the radioactive waste barrel in real time; The control module is further configured to: At least three weight intervals and corresponding operating parameter groups are preset, each parameter group includes a rated speed and a maximum acceleration. According to the real-time weight value fed back by the weight sensor, the corresponding parameter group is selected, the drive output of the moving track is dynamically adjusted, and a segmented deceleration is adopted in the deceleration and stopping stage, and the deceleration adopts a deceleration rate of 0.6-0.8 times the maximum acceleration.

[0007] Furthermore, each of the fixing members includes: Mounting seat; A pressure arm connected to one side of the mounting seat via a hinge shaft; A fixing rod, slidably arranged on the other side of the mounting seat; A connecting rod, one end of which is connected to the pressure arm, and the other end is connected to the fixed rod.

[0008] Furthermore, a buffer sleeve is provided at the free end of each pressing arm, and a buffer pad is provided at one end of each fixing rod away from each pressing arm.

[0009] Furthermore, the shape of one end of each fixing rod is adapted to the shape of the radioactive waste barrel.

[0010] Furthermore, at least two fixing members are symmetrically arranged.

[0011] Furthermore, the transverse limit rail and the longitudinal limit rail are distributed orthogonally.

[0012] Furthermore, the ratio of the number of the transverse limit rails to the longitudinal limit rails is n / 1, where n is a non-zero natural number.

[0013] Furthermore, the movable rail is an electric slide rail.

[0014] Different from the existing technology, the above technical solution has the following advantages: 1. The present invention uses the continuous curved surface design of the loading section curved plate to automatically trigger the fixing parts to enter the clamping state during the acceleration phase of the transfer plate, and uses mechanical linkage to apply a fixing force to the radioactive waste barrel, effectively resisting inertial displacement.

[0015] 2. The continuous curved surface of the unloading section is coupled with the deceleration action, and the fixed state is released through mechanical contact. No electrical signal control is required. The maintenance cycle in a radioactive environment is extended, the frequency of spare parts replacement is reduced, and the radiation exposure operation links are reduced.

[0016] 3. The combination of horizontal / vertical limit rails and adjustable fixings supports the rapid adaptation of different standard barrels, reduces the adjustment time when replacing containers of different diameters, and improves versatility.

[0017] 4. The initial spacing of the fixtures allows the container to be fine-tuned and automatically compensates for positioning errors during the loading phase.

[0018] 5. The orthogonally distributed limit rails form a grid layout, which increases the maximum load capacity of a single board to multiple standard barrels and reduces site occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of this embodiment; Figure 2 This is a schematic diagram of the structure in which the radioactive waste barrel is placed on the transfer plate in this embodiment; Figure 3 This is a schematic diagram of the top view of the structure of this embodiment; Figure 4 Schematic diagram of the cross-sectional structure of the embodiment at the curved plate of the loading section; Figure 5 Schematic diagram of the cross-sectional structure of the embodiment at the bent plate of the unloading section; Figure 6 This is a schematic diagram of the structure of the fixing member of this embodiment; Figure 7 This is the control module flow chart of this embodiment.

[0020] Description of reference numerals: Transfer plate 1; transverse limit rail 11; longitudinal limit rail 12; Radioactive waste barrel 2; Fixing member 3; mounting seat 31; pressing arm 32; hinge shaft 321; fixing rod 33; connecting rod 34; buffer sleeve 35; buffer pad 36; Moving track 4; loading station 41; unloading station 42; Loading section curved plate 5; Unloading section curved plate 6; Position detection module 7; Control module 8; Weight sensor 9. DETAILED DESCRIPTION

[0021] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0022] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0023] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0024] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0025] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0026] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0027] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means two or more (including two), and similar expressions related to "multiple," such as "multiple groups" and "multiple times," are also understood in this manner, unless otherwise specifically defined.

[0028] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0029] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] See also Figures 1 to 7 As shown, this embodiment provides a radioactive waste transfer device, including: The transfer plate 1 has two spaced-apart transverse limit rails 11 and one longitudinal limit rail 12 on its bearing surface; The radioactive waste barrel 2 is placed on the transfer plate 1; Four fixing members 3 are used to limit the position of the radioactive waste barrel 2. Each of the transverse limiting rails 11 is provided with a fixing member 3, and the longitudinal limiting rails 12 are provided with two fixing members 3. Each of the fixing members 3 has: Initial state: the fixing member 3 maintains a distance from the radioactive waste barrel 2, allowing the radioactive waste barrel 2 to move freely; Fixed state: the fixing member 3 contacts the radioactive waste barrel 2 and applies a clamping force; A movable track 4, with a loading station 41 and an unloading station 42 at both ends thereof, the transfer plate 1 is arranged on the movable track 4, and the movable track 4 is used to drive the transfer plate 1 to reciprocate along the movable track 4; The loading section curved plate 5 is provided at the loading station 41 and has a continuous curved surface inclined inwardly, and is used to push each of the fixing members 3 into a fixed state during the acceleration phase of the transfer plate 1; Unloading section curved plate 6: It is arranged at the unloading station 42 and has a continuous curved surface inclined toward the outside, and is used to release the fixed state of each of the fixing members 3 during the deceleration stage of the transfer plate 1.

[0031] The movable track 4 is an electric slide rail, which is driven by a slide rail and a motor. This is an existing public technology and will not be described in detail here.

[0032] In this embodiment, the loading section curved plate 5 and the unloading section curved plate 6 are arranged on both sides of the movable track 4, and the loading section curved plate 5 and the unloading section curved plate 6 are disconnected. In other preferred embodiments, in order to ensure the stability of the radioactive waste barrel 2 during the entire transportation process, the loading section curved plate 5 and the unloading section curved plate 6 are connected.

[0033] In other preferred embodiments, the number of the transverse limiting rails 11 and the longitudinal limiting rails 12 can be adaptively adjusted according to the actual required loading quantity of the transfer plate 1 .

[0034] In this embodiment, four fixing members 3 are symmetrically arranged in pairs. The symmetrical layout can eliminate the eccentric load moment and is beneficial to reducing the wear of the movable rail 4.

[0035] In other preferred embodiments, when the number of the fixing members 3 is an odd number, two symmetrically arranged fixing members 3 may not be provided to achieve better clamping performance.

[0036] Also includes: A position detection module 7 is configured to provide real-time feedback of a position signal of the transfer plate 1 on the moving track 4; The control module 8 is in communication with the moving track 4 and the position detection module 7 and is configured to: When the transfer plate 1 moves to the loading station 41, the moving track 4 is controlled to drive the transfer plate 1 to execute the motion curve of accelerating to the rated speed, running at a constant speed and decelerating to stop in sequence. In the deceleration and stopping stage, based on the real-time feedback of the position detection module 7, the deceleration value is dynamically adjusted so that the speed of the transfer plate 1 drops to zero when it reaches the unloading station 42.

[0037] The motion curve satisfies the following constraints: L=v 2 max / 2a1+v max ·t 匀速 +v 2 max / 2a2 Where L is the total length of the moving track, v max is the rated speed, a1 and a2 are the absolute values ​​of acceleration of the transfer plate 1 in the acceleration stage and the deceleration stop stage respectively, and tuniform speed is the duration of the uniform speed stage.

[0038] In the process of the movable track 4 driving the transfer plate 1 to accelerate to the rated speed, in order to avoid the acceleration of the transfer plate 1 causing displacement and tilting of the radioactive waste barrel 2 before the loading section curved plate 41 pushes the respective fixing parts 3 into a fixed state, at the beginning of the acceleration, the absolute value of the acceleration gradually increases from 0 to a1. Similarly, at the end of the deceleration and stop stage, the absolute value of the acceleration decreases from a2 to 0.

[0039] The position detection module 7 uses an incremental encoder, and the control module 8 can use a single-chip microcomputer (MCU) or a PLC (programmable logic controller), which are existing public technologies and will not be described in detail here.

[0040] Also includes: A weight sensor 9 is provided below the bearing surface of the transfer plate 1 and is in communication with the control module 8 for detecting the weight data of the radioactive waste barrel 2 in real time; The control module 8 is further configured to: Three weight intervals and corresponding operating parameter groups are preset. Each parameter group includes rated speed v max With the maximum acceleration a max According to the real-time weight value W fed back by the weight sensor, the corresponding parameter group is selected to dynamically adjust the drive output of the moving track, and a segmented deceleration is adopted in the deceleration and stopping stage, and the deceleration adopts a deceleration rate of 0.6-0.8 times the maximum acceleration.

[0041] For example, three weight ranges are preset: 0-300kg, 300-600kg, and 600-1000kg. The corresponding rated speeds are 1.5m / s, 1.2m / s, and 0.8m / s, respectively. The corresponding maximum accelerations are 2.0m / s², 1.5m / s², and 1.0m / s², respectively. Three-stage deceleration is adopted during the deceleration and stopping stages. From initial deceleration to stopping, the deceleration decreases from 0.8 times the maximum acceleration to 0.7 and 0.6 times the maximum acceleration, and then gradually decreases to 0.

[0042] Through real-time feedback data from the weight sensor 9, the control module 8 dynamically matches the parameter group to improve transportation efficiency, reduce the rated speed when lightly loaded, reduce power consumption, limit acceleration when heavily loaded to avoid overload, and use segmented deceleration in the deceleration and stopping stage to reduce the impact force, which is beneficial to ensuring the service life of the equipment.

[0043] The weight sensor 9 is a weighing sensor, which is an existing public technology and will not be described in detail here.

[0044] Each of the fixing parts 3 includes: a mounting seat 31; a pressure arm 32, which is connected to one side of the mounting seat 31 through a hinge shaft 321; a fixing rod 33, which is slidably arranged on the other side of the mounting seat 31; a connecting rod 34, one end of which is connected to the pressure arm 32 and the other end is connected to the fixing rod 33; the modular structure supports the replacement of a single fixing part 3 within ten minutes without disassembling the transfer plate 1, wherein the connection between the mounting seat 31 and the transfer plate 1 can be achieved by bolts, which is a conventional technical means and will not be repeated here.

[0045] In this embodiment, a buffer sleeve 35 is provided at the free end of each pressing arm 32, and a buffer pad 36 is provided at one end of each fixing rod 33 away from each pressing arm 32. The buffer sleeve 35 and the buffer pad 36 are provided to increase friction and reduce wear of components.

[0046] In other preferred embodiments, the shape of one end of each fixing rod 33 is adapted to the shape of the radioactive waste barrel 2. For example, if the radioactive waste barrel 2 is cylindrical, the end of the fixing rod 33 in contact with the barrel wall is set to be arc-shaped.

[0047] In other preferred embodiments, a bearing is provided at the free end of each pressing arm 32 to reduce friction with the loading section / unloading section curved plate during transportation.

[0048] The transverse limiting rail 11 and the longitudinal limiting rail 12 are orthogonally distributed, which can improve the transverse / longitudinal anti-deviability and enhance the comprehensive protection capability.

[0049] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A radioactive waste transfer device, characterized in that: include: The transfer plate has a transverse limit rail and a longitudinal limit rail provided on its bearing surface; Radioactive waste barrels are placed on the transfer plate; At least two fixing members are used to limit the position of the radioactive waste barrel. At least one fixing member is provided on the transverse limit rail and the longitudinal limit rail. Each fixing member has: Initial state: the fixing member maintains a distance from the radioactive waste barrel, allowing the radioactive waste barrel to move freely; Fixed state: the fixing member contacts the radioactive waste barrel and applies a clamping force; A movable track, with a loading station and an unloading station at both ends respectively, the transfer plate is arranged on the movable track, and the movable track is used to drive the transfer plate to reciprocate along the movable track; A loading section curved plate, provided at the loading station, having a continuous curved surface inclined inwardly, and used for pushing each of the fixing members into a fixed state during the acceleration phase of the transfer plate; Unloading section curved plate: It is arranged at the unloading station and has a continuous curved surface inclined toward the outside, and is used to release the fixed state of each of the fixing parts during the deceleration stage of the transfer plate.

2. A radioactive waste transfer device according to claim 1, characterized in that: Also includes: A position detection module configured to provide real-time feedback of a position signal of the transfer plate on the moving track; The control module is in communication with the moving track and the position detection module and is configured to: When the transfer plate moves to the loading station, the mobile track is controlled to drive the transfer plate to execute the motion curve of accelerating to the rated speed, running at a constant speed and decelerating to stop in sequence. During the deceleration and stopping stage, the deceleration value is dynamically adjusted based on the real-time feedback from the position detection module so that the speed of the transfer plate drops to zero when it reaches the unloading station.

3. The radioactive waste transfer device according to claim 2, characterized in that: Also includes: a weight sensor, disposed below the bearing surface of the transfer plate and in communication with the control module, for detecting the weight data of the radioactive waste barrel in real time; The control module is further configured to: At least three weight intervals and corresponding operating parameter groups are preset, each parameter group includes a rated speed and a maximum acceleration. According to the real-time weight value fed back by the weight sensor, the corresponding parameter group is selected, the drive output of the moving track is dynamically adjusted, and a segmented deceleration is adopted in the deceleration and stopping stage, and the deceleration adopts a deceleration rate of 0.6-0.8 times the maximum acceleration.

4. The radioactive waste transfer device according to claim 1, characterized in that: Each of the fixing members includes: Mounting seat; A pressure arm connected to one side of the mounting seat via a hinge shaft; A fixing rod, slidably arranged on the other side of the mounting seat; A connecting rod, one end of which is connected to the pressure arm, and the other end is connected to the fixed rod.

5. The radioactive waste transfer device according to claim 4, characterized in that: A buffer sleeve is provided at the free end of each pressing arm, and a buffer pad is provided at one end of each fixing rod away from each pressing arm.

6. The radioactive waste transfer device according to claim 4, characterized in that: The shape of one end of each fixing rod is adapted to the shape of the radioactive waste barrel.

7. The radioactive waste transfer device according to claim 1, characterized in that: At least two fixing members are symmetrically arranged.

8. The radioactive waste transfer device according to claim 1, characterized in that: The transverse limiting rails are distributed orthogonally to the longitudinal limiting rails.

9. The radioactive waste transfer device according to claim 1, characterized in that: The ratio of the number of the transverse limiting rails to the number of the longitudinal limiting rails is n / 1, where n is a non-zero natural number.

10. The radioactive waste transfer device according to claim 1, characterized in that: The movable rail is an electric slide rail.

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