A device for quickly identifying the activity of associated radioactive waste residues
By designing an adjustable nuclear radiation detector device, the problems of space occupation and high cost in existing technologies have been solved, and efficient and low-cost detection at multiple points has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- THE FOURTH INST OF NUCLEAR ENG OF CNNC
- Filing Date
- 2024-08-01
- Publication Date
- 2026-06-26
AI Technical Summary
In the existing technology, having two detection devices increases the space required and the use of twice the number of nuclear radiation detectors results in higher costs.
A rapid identification device for the activity of associated radioactive waste residue was designed. The device achieves horizontal and vertical position adjustment of a single nuclear radiation detector through translation components and lifting mechanisms, and is suitable for the detection of steel boxes of various sizes.
This reduces the space occupied by multiple testing devices, lowers costs, and improves testing efficiency.
Smart Images
Figure CN119126182B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of radionuclide detection, and more specifically, relates to a rapid identification device for the activity of associated radioactive waste residue. Background Technology
[0002] In the practice of nuclear fuel manufacturing, nuclear power plant operation, nuclear waste disposal, and nuclear facility decommissioning, a large amount of solid radioactive waste is continuously generated and accumulated. This radioactive solid waste is packaged, temporarily stored, and transported in steel boxes, which are generally transported by vehicle. However, the radioactive waste residue contains a variety of naturally occurring radioactive substances, requiring radionuclide activity testing at multiple points on both sides of the steel box.
[0003] Existing devices for detecting radionuclide activity in steel boxes on vehicles include two sets of opposing detection frames. Multiple sets of opposing nuclear radiation detectors are installed at different points on the two sets of frames. Nuclear radiation detection stops when the vehicle moves between the two sets of frames. Furthermore, depending on the size of the vehicle and the steel box, at least two sets of detection devices of different sizes are used to detect large and small steel boxes respectively. However, using two sets of detection devices not only increases the space required but also increases the cost due to the doubled number of nuclear radiation detectors. Summary of the Invention
[0004] The purpose of this invention is to provide a rapid identification device for the activity of associated radioactive waste residue, so as to solve the technical problems of existing technologies where two sets of detection devices not only increase the space occupied, but also increase the cost due to the use of twice the number of nuclear radiation detectors.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a rapid identification device for the activity of associated radioactive waste residue is provided, comprising two sets of fixed frames arranged opposite each other, a translation frame slidably connected to the fixed frame, and a translation component for driving the translation frame to slide horizontally on the fixed frame; a support frame is provided on the translation frame, and a lifting block is slidably connected to the support frame; a lifting mechanism for driving the lifting block to move up and down is provided between the translation frame and the support frame; a nuclear radiation detector for detecting nuclide activity is provided on the lifting block, and two nuclear radiation detectors are arranged opposite each other.
[0006] In one possible implementation, based on the above technical solutions, the translation component includes a translation screw, a translation guide rail, and a translation motor. The translation screw is horizontally rotatably connected to the bottom of the fixed frame. The translation guide rail is fixed to the bottom of the fixed frame and parallel to the translation screw. The translation motor is disposed at the bottom of the fixed frame. The output shaft of the translation motor is coaxially fixed with the translation screw. The translation frame is threadedly connected to the translation screw, and the translation frame is slidably connected to the translation guide rail.
[0007] In one possible implementation, based on the above technical solutions, the lifting mechanism includes a lifting screw, a lifting guide rail, and a lifting motor. The lifting screw is vertically rotatably connected between the top of the support frame and the translation frame. The lifting guide rail is vertically fixed on the translation frame. The lifting motor is mounted on the translation frame. The output shaft of the lifting motor is coaxially fixed with the lifting screw. The lifting block is threadedly connected to the lifting screw and slidably connected to the lifting guide rail.
[0008] In one possible implementation, based on the above technical solutions, the lifting screw includes an outer screw and an inner screw. The lifting block is threadedly connected to the outer screw, and the outer screw and the lifting block have a self-locking thread. The top of the outer screw is rotatably connected to the top of the support frame, and the support frame is a vertically telescopic structure. The bottom of the inner screw is coaxially fixed to the output shaft of the lifting motor, and the inner screw is coaxially threaded to the inside of the outer screw. An automatic connection mechanism is provided between the bottom of the outer screw and the inner screw to fix the outer screw and the inner screw relative to each other. The automatic connection mechanism is used to release the fixation between the outer screw and the inner screw when the lifting block rises to the top of the outer screw, and to fix the outer screw and the inner screw relative to each other again after the outer screw descends and resets.
[0009] In one possible implementation, based on the above technical solutions, the thread friction between the outer screw and the inner screw is less than the thread friction between the outer screw and the lifting block.
[0010] In one possible implementation, based on the above technical solutions, a force-applying spring is fixed to the downward-facing surface of the support frame, which faces the lifting block. When the automatic connecting mechanism releases the fixation between the outer screw and the inner screw, the force-applying spring is in a compressed state.
[0011] In one possible implementation, based on the above technical solutions, the automatic connection mechanism includes a top block, a connecting spring, a connecting column, a reset assembly, a pull rope, a take-up reel, and a linkage assembly. The inner screw has a cavity near the translation frame, the top block slides vertically within the cavity, and the connecting spring is located within the cavity and connected to the top block. A fixing groove extending to the outer screw is formed on the inner sidewall of the cavity below the top block, and the connecting column is slidably connected between the cavity and the fixing groove. When the outer screw and the inner screw are relatively fixed, the connecting column is simultaneously located within the fixing grooves of both the outer and inner screws. The reset assembly is located within the fixing groove of the outer screw and is used to reset the connecting column to a position where one end is located within the cavity and the other end is located within the fixing groove of the inner screw. The bottom end of the top block that contacts and presses against the connecting column is hemispherical.
[0012] The take-up reel is rotatably connected to the top of the support frame. The top wall of the cavity has a connecting hole coaxial with the inner screw. One end of the pull rope is located in the cavity and fixed to the top block. The other end of the pull rope passes through the connecting hole and is fixed to the take-up reel. The linkage component is located between the lifting block and the take-up reel. When the lifting block rises to near the top of the outer screw, the linkage component drives the take-up reel to rotate.
[0013] In one possible implementation, based on the above technical solutions, the reset assembly includes a reset spring and a push plate. The push plate is slidably connected in the fixing groove of the outer screw, and the reset spring is disposed in the fixing groove of the outer screw and connected to the push plate. The push plate is located on the side of the reset spring closer to the cavity. When the reset spring is in its natural state, the side of the push plate facing the cavity is coplanar with the fixing groove of the outer screw and the inner screw.
[0014] In one possible implementation, based on the above technical solutions, the linkage component includes a linkage gear, a linkage rack, and a self-locking drive. The linkage gear is coaxially fixed on the rotating shaft of the take-up reel. The linkage rack is vertically slidably connected to the lifting block and is used to mesh with the linkage gear. The self-locking drive is disposed on the lifting block and is used to drive the linkage rack to slide and then self-lock its position.
[0015] In one possible implementation, based on the above technical solutions, the self-locking drive component includes a self-locking motor and a return gear. The self-locking motor is disposed on the lifting block row, and the return gear is coaxially fixed on the output shaft of the self-locking motor. The return gear meshes with the linkage rack.
[0016] The beneficial effects of the rapid identification device for associated radioactive waste residue provided by the present invention are as follows: Compared with the prior art, the present invention achieves multi-point detection by adjusting the horizontal and vertical positions of a single nuclear radiation detector through the horizontal sliding component driving the horizontal sliding frame and the vertical lifting block driven by the lifting mechanism driving the vertical lifting block, and is applicable to steel boxes of various sizes, reducing the space occupied by multiple detection devices and reducing costs. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a top view of a device for rapid identification of the activity of associated radioactive waste provided in an embodiment of the present invention;
[0019] Figure 2 A side view of the lifting mechanism provided in an embodiment of the present invention;
[0020] Figure 3 A partial cross-sectional view of the automatic connection mechanism provided in an embodiment of the present invention;
[0021] Figure 4 This is a partial cross-sectional view of the linkage component provided in an embodiment of the present invention.
[0022] The labels for the attached figures are as follows:
[0023] 1. Fixed frame; 11. Translation frame; 12. Support frame; 121. Force spring; 2. Translation assembly; 21. Translation screw; 22. Translation guide rail; 23. Translation motor; 3. Lifting block; 31. Nuclear radiation detector; 4. Lifting mechanism; 41. Lifting screw; 411. External screw; 412. Internal screw; 42. Lifting guide rail; 43. Lifting motor; 5. Automatic connection mechanism; 51. Top block; 511. Cavity; 52. Connecting spring; 53. Connecting column; 531. Fixing groove; 54. Reset assembly; 541. Reset spring; 542. Push plate; 55. Pull rope; 551. Connecting hole; 56. Take-up reel; 57. Linkage assembly; 571. Linkage gear; 572. Linkage rack; 573. Self-locking drive component; 5731. Self-locking motor; 5732. Return gear. Detailed Implementation
[0024] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] It should be further noted that the accompanying drawings and embodiments of the present invention mainly describe the concept of the present invention. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of the present invention, they can implement the above-mentioned specific forms and arrangements in a well-known manner.
[0026] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0027] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" 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 the present 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 the present invention.
[0028] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.
[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature 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, and "several" means one or more, unless otherwise explicitly specified.
[0030] The present invention will now describe a rapid identification device for the activity of associated radioactive waste residue.
[0031] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a rapid identification device for the activity of associated radioactive waste residue, including two sets of fixed frames 1 facing each other. A translation frame 11 is slidably connected to the fixed frame 1, and a translation component 2 is provided on the fixed frame 1 for driving the translation frame 11 to slide horizontally. A support frame 12 is provided on the translation frame 11, and a lifting block 3 is slidably connected to the support frame 12. A lifting mechanism 4 is provided between the translation frame 11 and the support frame 12 for driving the lifting block 3 to move up and down. A nuclear radiation detector 31 for detecting nuclide activity is provided on the lifting block 3, and the two nuclear radiation detectors 31 are facing each other.
[0032] This embodiment provides a rapid identification device for the activity of associated radioactive waste residue. Compared with the prior art, it achieves multi-point detection by adjusting the horizontal and vertical positions of a single nuclear radiation detector 31 through the horizontal sliding component 2 driving the horizontal sliding frame 11 and the vertical lifting block 3 driven by the lifting mechanism 4. It is also applicable to steel boxes of various sizes, reducing the space occupied by multiple detection devices and lowering costs.
[0033] like Figures 1 to 3As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0034] The translation assembly 2 includes a translation screw 21, a translation guide rail 22, and a translation motor 23. The translation screw 21 is horizontally rotatably connected to the bottom of the fixed frame 1. The translation guide rail 22 is fixed to the bottom of the fixed frame 1 and parallel to the translation screw 21. The translation motor 23 is located at the bottom of the fixed frame 1. The output shaft of the translation motor 23 is coaxially fixed with the translation screw 21. The translation frame 11 is threadedly connected to the translation screw 21 and slidably connected to the translation guide rail 22.
[0035] When it is necessary to adjust the horizontal position of the nuclear radiation detector 31, the translation motor 23 is started to rotate the translation screw 21. The translation screw 21 drives the translation frame 11 to slide along the length of the translation guide rail 22, which improves the horizontal adjustment efficiency of the nuclear radiation detector 31.
[0036] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0037] The lifting mechanism 4 includes a lifting screw 41, a lifting guide rail 42, and a lifting motor 43. The lifting screw 41 is vertically rotatably connected between the top of the support frame 12 and the translation frame 11. The lifting guide rail 42 is vertically fixed on the translation frame 11. The lifting motor 43 is mounted on the translation frame 11. The output shaft of the lifting motor 43 is coaxially fixed with the lifting screw 41. The lifting block 3 is threadedly connected to the lifting screw 41 and slidably connected to the lifting guide rail 42.
[0038] When the height of the nuclear radiation detector 31 needs to be adjusted, the lifting motor 43 is started to rotate the lifting screw 41. The lifting screw 41 drives the lifting block 3 to slide along the length of the lifting guide rail 42, which improves the vertical adjustment efficiency of the nuclear radiation detector 31.
[0039] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0040] The lifting screw 41 includes an outer screw 411 and an inner screw 412. The lifting block 3 is threadedly connected to the outer screw 411, and the outer screw 411 and the lifting block 3 have a self-locking thread. The top of the outer screw 411 is rotatably connected to the top of the support frame 12, which is a vertically telescopic structure. The bottom of the inner screw 412 is coaxially fixed to the output shaft of the lifting motor 43, and the inner screw 412 is coaxially threaded inside the outer screw 411. An automatic connection mechanism 5 is provided between the bottom of the outer screw 411 and the inner screw 412 to fix the outer screw 411 and the inner screw 412 relative to each other. The automatic connection mechanism 5 is used to release the fixation between the outer screw 411 and the inner screw 412 when the lifting block 3 rises to the top of the outer screw 411, and to fix the outer screw 411 and the inner screw 412 relative to each other again after the outer screw 411 descends and resets.
[0041] The installation of the outer screw 411 and the inner screw 412 can significantly reduce the height of the lifting screw 41 when inspecting small steel boxes, making the lifting mechanism 4 more stable when the translation component 2 drives the translation frame 11 to move, and improving the connection life between the lifting screw 41 and the translation frame 11.
[0042] When inspecting the small steel box, the outer screw 411 completely wraps around the inner screw 412, making the height of the lifting screw 41 the lowest possible. The automatic connecting mechanism 5 fixes the outer screw 411 and the inner screw 412 relative to each other, so as to achieve stable lifting of the low-height lifting block 3.
[0043] When inspecting a large steel box, the lifting block 3 first rises to a position close to the top of the outer screw 411. At this time, the automatic connecting mechanism 5 releases the fixation between the outer screw 411 and the inner screw 412. Since the thread between the outer screw 411 and the lifting block 3 has a self-locking function, and the lifting block 3 is guided by the lifting slide rail, when the lifting motor 43 drives the inner screw 412 to rotate, the outer screw 411 cannot rotate, but rises relative to the inner screw 412. At this time, the relative position of the lifting block 3 on the outer screw 411 remains unchanged, which improves the lifting efficiency of the outer screw 411 and the lifting block 3, and there is no need to add an additional power source to the outer screw 411.
[0044] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0045] The thread friction between the outer screw 411 and the inner screw 412 is less than the thread friction between the outer screw 411 and the lifting block 3.
[0046] After the outer screw 411 and the inner screw 412 are released from their fixed position, the lifting motor 43 can drive the inner screw 412 to rotate, making the lifting of the outer screw 411 more stable.
[0047] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0048] A force-applying spring 121 is fixed to the top surface of the support frame 12 facing downwards, and the force-applying spring 121 is in a compressed state when the automatic connecting mechanism 5 releases the fixation between the outer screw 411 and the inner screw 412.
[0049] When inspecting a large steel box, the lifting block 3 rises to a position close to the top of the outer screw 411. At this time, the lifting block 3 presses upward against the force spring 121, and the force spring 121 applies downward pressure to the lifting block 3, making the thread friction between the lifting block 3 and the outer screw 411 greater, which further improves the stability of the inner screw 412 driving the outer screw 411 to rise and fall by rotating.
[0050] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0051] The automatic connection mechanism 5 includes a top block 51, a connecting spring 52, a connecting post 53, a reset assembly 54, a pull rope 55, a take-up reel 56, and a linkage assembly 57. The inner screw 412 has a cavity 511 located near the translation frame 11. The top block 51 slides vertically within the cavity 511. The connecting spring 52 is located within the cavity 511 and connected to the top block 51. A fixing groove 531 extending to the outer screw 411 is located on the inner wall of the cavity 511 below the top block 51. The connecting post... 53 is slidably connected between cavity 511 and fixing groove 531; when the outer screw 411 and inner screw 412 are fixed relative to each other, the connecting post 53 is simultaneously located in the fixing groove 531 of both the outer screw 411 and the inner screw 412; the reset assembly 54 is set in the fixing groove 531 of the outer screw 411 and is used to drive the connecting post 53 to reset to one end located in cavity 511 and the other end located in fixing groove 531 of inner screw 412; the bottom end of the top block 51 and the end that contacts and presses the connecting post 53 are both hemispherical.
[0052] The take-up reel 56 is rotatably connected to the top of the support frame 12. The top wall of the cavity 511 has a connecting hole 551 coaxial with the inner screw 412. One end of the pull rope 55 is located in the cavity 511 and fixed to the top block 51. The other end of the pull rope 55 passes through the connecting hole 551 and is fixed to the take-up reel 56. The linkage component 57 is set between the lifting block 3 and the take-up reel 56. When the lifting block 3 rises to near the top of the outer screw 411, the linkage component 57 drives the take-up reel 56 to rotate.
[0053] When the take-up reel 56 is not winding the pull rope 55, the connecting spring 52 presses the top block 51 downward against the bottom of the cavity 511. At this time, the top block 51 maintains a state of compression on the connecting post 53. The connecting post 53 is simultaneously located in the fixing groove 531 of the outer screw 411 and the inner screw 412, so that the outer screw 411 and the inner screw 412 remain relatively fixed.
[0054] When a large steel box needs to be inspected, the lifting block 3 rises to a position close to the top of the outer screw 411, and drives the take-up wheel 56 to rotate through the linkage component 57. The take-up wheel 56 winds up the pull rope 55, causing the top block 51 to move upward. The connecting spring 52 compresses until the top block 51 disengages from the connecting post 53. At this time, the reset component 54 drives the connecting post 53 to slide toward the cavity 511 and disengage from the fixing groove 531 of the outer screw 411, thereby automatically releasing the fixation between the outer screw 411 and the inner screw 412 and improving the ease of operation.
[0055] Furthermore, in order to reduce the number of operations of the automatic connection mechanism 5 and improve the efficiency of nuclide activity detection, when switching from small steel box detection to large steel box detection, the lower points of the large steel box can be detected first. After all the lower points have been detected, the external screw 411 can be raised to perform unified detection of the higher points.
[0056] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0057] The reset assembly 54 includes a reset spring 541 and a push plate 542. The push plate 542 is slidably connected in the fixing groove 531 of the outer screw 411. The reset spring 541 is disposed in the fixing groove 531 of the outer screw 411 and connected to the push plate 542. The push plate 542 is located on the side of the reset spring 541 close to the cavity 511. When the reset spring 541 is in its natural state, the side of the push plate 542 facing the cavity 511 is coplanar at the junction of the fixing groove 531 in the outer screw 411 and the inner screw 412.
[0058] When the outer screw 411 and the inner screw 412 are fixed relative to each other, the return spring 541 is in a compressed state. When the pull rope 55 pulls the top block 51 upward to disengage from the connecting post 53, the elastic force of the return spring 541 drives the push plate 542 to push the connecting post 53 out of the fixing groove 531 of the outer screw 411, thereby improving the efficiency of fixing and releasing between the outer screw 411 and the inner screw 412.
[0059] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0060] The linkage assembly 57 includes a linkage gear 571, a linkage rack 572, and a self-locking drive 573. The linkage gear 571 is coaxially fixed on the rotating shaft of the take-up reel 56. The linkage rack 572 is vertically slidably connected to the lifting block 3 and is used to mesh with the linkage gear 571. The self-locking drive 573 is set on the lifting block 3 and is used to drive the linkage rack 572 to slide and then lock its position.
[0061] When the lifting block 3 moves on the outer screw 411, the linkage rack 572 remains fixed. When the lifting block 3 moves upward to near the top of the outer screw 411, the linkage rack 572 meshes with the linkage gear 571 and drives it to rotate.
[0062] When the outer screw 411 needs to be reset to be fixed with the inner screw 412 again, the lifting motor 43 drives the inner screw 412 to reverse so that the outer screw 411 can be lowered and reset until the fixing groove 531 of the outer screw 411 and the inner screw 412 are connected again. Then, the self-locking drive 573 drives the linkage rack 572 to move downward, so that the linkage rack 572 drives the linkage gear 571 to reverse. The take-up reel 56 releases the line, and the connecting spring 52 drives the top block 51 to press the connecting post 53. The outer screw 411 and the inner screw 412 are fixed relative to each other again. The lifting motor 43 continues to drive the inner screw 412 to rotate, so that the lifting block 3 can be lowered on the outer screw 411. This improves the overall ease of operation.
[0063] like Figures 1 to 3 As shown, based on the above embodiments, the present invention provides another specific embodiment as follows:
[0064] The self-locking drive unit 573 includes a self-locking motor 5731 and a restoring gear 5732. The self-locking motor 5731 is arranged in the third row of the lifting block. The restoring gear 5732 is coaxially fixed on the output shaft of the self-locking motor 5731 and meshes with the linkage rack 572.
[0065] When the lifting motor 43 drives the inner screw 412 to reverse and cause the outer screw 411 to descend and reset, the self-locking motor 5731 starts and drives the reset gear 5732 to rotate. The reset gear 5732 drives the linkage rack 572 to descend. The linkage rack 572 drives the linkage gear 571 to rotate until it separates from the linkage rack. After the lifting block 3 descends on the outer screw 411, the self-locking motor 5731 drives the reset gear 5732 to reverse and reset the linkage rack 572 again, so as to facilitate the next switching test of the large steel box.
[0066] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
[0067] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0068] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
Claims
1. A rapid identification device for the activity of associated radioactive waste residue, comprising two sets of opposing fixed frames (1), characterized in that, A translation frame (11) is slidably connected to the fixed frame (1), and a translation component (2) is provided on the fixed frame (1) for driving the translation frame (11) to slide horizontally; a support frame (12) is provided on the translation frame (11), and a lifting block (3) is slidably connected to the support frame (12); a lifting mechanism (4) for driving the lifting block (3) to move up and down is provided between the translation frame (11) and the support frame (12); a nuclear radiation detector (31) for detecting nuclide activity is provided on the lifting block (3), and the two nuclear radiation detectors (31) are arranged facing each other; The lifting mechanism (4) includes a lifting screw (41), a lifting guide rail (42), and a lifting motor (43). The lifting screw (41) is vertically rotatably connected between the top of the support frame (12) and the translation frame (11). The lifting guide rail (42) is vertically fixed on the translation frame (11). The lifting motor (43) is mounted on the translation frame (11). The output shaft of the lifting motor (43) is coaxially fixed with the lifting screw (41). The lifting block (3) is threadedly connected to the lifting screw (41). The lifting block (3) is slidably connected to the lifting guide rail (42). The lifting screw (41) includes an outer screw (411) and an inner screw (412). The lifting block (3) is threadedly connected to the outer screw (411). The outer screw (411) and the lifting block (3) have a self-locking thread. The top of the outer screw (411) is rotatably connected to the top of the support frame (12). The support frame (12) is a vertically telescopic structure. The bottom of the inner screw (412) is coaxially fixed to the output shaft of the lifting motor (43). The inner screw (412) is coaxially threadedly connected to the outer screw (411). Inside; between the bottom of the outer screw (411) and the inner screw (412), an automatic connection mechanism (5) is provided for fixing the outer screw (411) and the inner screw (412) relative to each other. The automatic connection mechanism (5) is used to release the fixation between the outer screw (411) and the inner screw (412) when the lifting block (3) rises to the top of the outer screw (411), and to fix the outer screw (411) and the inner screw (412) relative to each other again after the outer screw (411) descends and resets. The automatic connection mechanism (5) includes a top block (51), a connecting spring (52), a connecting post (53), a reset assembly (54), a pull rope (55), a take-up reel (56), and a linkage assembly (57); the inner screw (412) has a cavity (511) located near the translation frame (11), the top block (51) slides vertically in the cavity (511), and the connecting spring (52) is located in the cavity (511) and connected to the top block (51); the inner sidewall of the cavity (511) has a fixing groove (531) extending to the outer screw (411) located below the top block (51), and the connecting post... (53) Sliding connection between the cavity (511) and the fixing groove (531); when the outer screw (411) and the inner screw (412) are relatively fixed, the connecting post (53) is located in the fixing groove (531) of both the outer screw (411) and the inner screw (412); the reset assembly (54) is disposed in the fixing groove (531) of the outer screw (411) and is used to drive the connecting post (53) to reset to one end located in the cavity (511) and the other end located in the fixing groove (531) of the inner screw (412); the bottom end of the top block (51) and the end that contacts and presses the connecting post (53) are both hemispherical. The take-up reel (56) is rotatably connected to the top of the support frame (12). The top wall of the cavity (511) is provided with a connecting hole (551) coaxial with the inner screw (412). One end of the pull rope (55) is located in the cavity (511) and fixed to the top block (51). The other end of the pull rope (55) passes through the connecting hole (551) and is fixed to the take-up reel (56). The linkage component (57) is arranged between the lifting block (3) and the take-up reel (56). When the lifting block (3) rises to near the top of the outer screw (411), the linkage component (57) drives the take-up reel (56) to rotate.
2. The rapid activity identification device for associated radioactive waste residue as described in claim 1, characterized in that, The translation component (2) includes a translation screw (21), a translation guide rail (22), and a translation motor (23). The translation screw (21) is horizontally rotatably connected to the bottom of the fixed frame (1). The translation guide rail (22) is fixed to the bottom of the fixed frame (1) and parallel to the translation screw (21). The translation motor (23) is located at the bottom of the fixed frame (1). The output shaft of the translation motor (23) is coaxially fixed with the translation screw (21). The translation frame (11) is threadedly connected to the translation screw (21). The translation frame (11) is slidably connected to the translation guide rail (22).
3. The rapid identification device for the activity of associated radioactive waste residue as described in claim 1, characterized in that, The thread friction between the outer screw (411) and the inner screw (412) is less than the thread friction between the outer screw (411) and the lifting block (3).
4. The rapid identification device for the activity of associated radioactive waste residue as described in claim 3, characterized in that, The top surface of the support frame (12) facing downwards is fixed with a force spring (121) facing the lifting block (3). When the automatic connection mechanism (5) releases the fixation between the outer screw (411) and the inner screw (412), the force spring (121) is in a compressed state.
5. The rapid activity identification device for associated radioactive waste residue as described in claim 1, characterized in that, The reset assembly (54) includes a reset spring (541) and a push plate (542). The push plate (542) is slidably connected in the fixing groove (531) of the outer screw (411). The reset spring (541) is disposed in the fixing groove (531) of the outer screw (411) and connected to the push plate (542). The push plate (542) is located on the side of the reset spring (541) close to the cavity (511). When the reset spring (541) is in its natural state, the side of the push plate (542) facing the cavity (511) is coplanar at the junction of the fixing groove (531) in the outer screw (411) and the inner screw (412).
6. The rapid activity identification device for associated radioactive waste residue as described in claim 1, characterized in that, The linkage component (57) includes a linkage gear (571), a linkage rack (572), and a self-locking drive (573). The linkage gear (571) is coaxially fixed on the rotating shaft of the take-up reel (56). The linkage rack (572) is vertically slidably connected to the lifting block (3) and is used to mesh with the linkage gear (571). The self-locking drive (573) is disposed on the lifting block (3) and is used to drive the linkage rack (572) to slide and then self-lock its position.
7. The rapid activity identification device for associated radioactive waste residue as described in claim 6, characterized in that, The self-locking drive unit (573) includes a self-locking motor (5731) and a restoring gear (5732). The self-locking motor (5731) is arranged in the lifting block (3) row. The restoring gear (5732) is coaxially fixed on the output shaft of the self-locking motor (5731). The restoring gear (5732) meshes with the linkage rack (572).