A membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols

Abstract

This invention discloses a membrane-borne self-driven storage and retrieval device for online monitoring of αβ radioactive aerosols, relating to the technical field of aerosol storage equipment. It includes a storage chamber and a combination tray mechanism. The storage chamber has retrieval and placement ports on its side wall. The combination tray mechanisms are stacked within the storage chamber, with adjacent combination tray mechanisms connected and fixed by support pillars. A rotating sleeve is installed on the bottom combination tray mechanism, driven by an externally mounted motor. This invention designs each layer of the combination tray mechanism as an integrated top and bottom tray structure, with storage ports one and two respectively. This allows a single layer to simultaneously and independently store new membrane boxes and recycled old membrane boxes, achieving "dual-purpose storage" and effectively doubling the effective storage capacity. Combined with the rotatable sleeve design, the multi-layer combination tray mechanism can be cyclically positioned, allowing the retrieval and placement ports to sequentially connect to the storage positions on each layer, further maximizing the utilization of vertical space.

Description

Technical Field

[0001] This invention relates to the field of aerosol storage equipment technology, specifically to a membrane-borne self-driven storage and retrieval device for online monitoring of αβ radioactive aerosols. Background Technology

[0002] Alpha and beta radioactive aerosols are crucial monitoring targets in the operation, decommissioning process, radiation environment monitoring, and emergency response of nuclear facilities. Once these aerosol particles are inhaled by the human body, they can cause serious internal radiation and pose a significant threat to the health of workers and the public. Therefore, achieving real-time, continuous, and accurate online monitoring of their concentration is a core requirement in the field of radiation protection and nuclear safety. In continuous monitoring systems, the filter membranes used to collect aerosols are consumables. For the subsequent processing of the membrane cartridges, traditional storage methods are mostly single-layer turntables or fixed compartments. The number of membrane cartridges loaded at one time is small. In situations requiring continuous monitoring, operators have to periodically interrupt monitoring and open the shielded compartment to replace the cartridges, which greatly increases the workload of the staff and directly leads to the discontinuity of monitoring data. This cannot meet the urgent need for "unmanned and minimally manned" operation in long-term operations such as the decommissioning of nuclear facilities. At the same time, according to the patent document with publication number CN115793023A, the scheme of using an "automatic paper feeding mechanism" is designed to make the filter membrane into a roll or a circulating conveyor belt. This is essentially a linear management mode of "sequential use and sequential disposal". It lacks fine management of the membrane cartridge status. All membrane cartridges, whether new or old, must be fixed on the same transmission path. It is impossible to achieve efficient separation of the physical space between the preparation storage of new membrane cartridges and the temporary storage and recycling of old membrane cartridges. This makes it difficult to further improve the effective storage density of the device and makes it inconvenient to carry out centralized and standardized recycling of used membrane cartridges. To this end, we propose a membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols. Summary of the Invention

[0003] The purpose of this invention is to provide a membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols, thereby solving the problems mentioned in the background art; To achieve the above objectives, the present invention provides the following technical solution: a membrane-borne self-driven storage and retrieval device for online monitoring of αβ radioactive aerosols, comprising a storage compartment and a combination plate mechanism. The storage compartment has an opening for retrieval and placement on its side wall. The combination plate mechanism is stacked inside the storage compartment. Adjacent combination plate mechanisms are connected and fixed by a support column. A rotating sleeve is installed on the bottom combination plate mechanism, which is driven to rotate by an externally installed motor. The combined tray mechanism includes a top tray and a bottom tray installed inside the storage compartment. The top tray and the bottom tray are connected and integrated on the inner side. Storage opening 1 is evenly opened on the top tray, and storage opening 2 is evenly opened at the corresponding position on the bottom tray. A drive shaft is movably inserted through the inner wall of the top tray, and a telescopic magnetic head is slidably connected to the inner end of the drive shaft. Storage opening 1 is used for storing new mold boxes, and storage opening 2 is used for storing old mold boxes.

[0004] Furthermore, a top cover is fixed to the top plate of the topmost combination plate mechanism, a trigger is installed on the top cover, and a reset photoelectric sensor is installed on the top of the storage compartment for counting the rotation of the combination plate mechanism.

[0005] Furthermore, a rotating shaft is movably connected to the inner wall of the storage opening of the top plate, and a transmission belt is sleeved on the rotating shaft. The outer end of the transmission shaft meshes with a gear installed on the rotating shaft through a sleeved gear, and the transmission belt is driven to rotate by the rotation of the transmission shaft.

[0006] Furthermore, a positioning cylinder is installed and fixed inside the storage compartment. A magnetic control platform is fixed on the side wall of the positioning cylinder and on the side corresponding to the retrieval port of the storage compartment. A turntable is set on the magnetic control platform and on the position of the corresponding telescopic magnetic head. A fixed rod on the back side of the turntable passes through the positioning cylinder and is movably connected to it.

[0007] Furthermore, the turntable has grooves, and electromagnets are symmetrically installed in the grooves.

[0008] Furthermore, a photoelectric sensor is installed inside the magnetic control console and located at the position of the corresponding telescopic magnetic head. An identification code is installed on the side wall of the telescopic magnetic head. The magnetic control console is used to control the polarity of the electromagnet inside the corresponding height turntable to realize the adsorption and detachment of the telescopic magnetic head.

[0009] Furthermore, an adjusting shaft is movably connected to the inner wall of the positioning cylinder, and a toothed sleeve is fitted on the adjusting shaft and located on the side of the corresponding turntable. The toothed sleeve meshes with a gear on the through shaft of the turntable, driving the turntable to rotate.

[0010] The membrane-based self-driven access method is as follows: Layered storage and retrieval: During storage, the film boxes are evenly placed on the storage opening of each layer. The magnetic control unit controls the electromagnets at the corresponding heights to be energized according to the received instructions, so that the telescopic magnetic head at the end of the drive shaft can pick up the film. At the same time, the adjustment shaft rotates, so that the turntable at the corresponding height can rotate, which drives the drive shaft and the inner rotating shaft of the corresponding storage opening to rotate, moving the film box on the front-end transmission sleeve inward. Then, the film box in the storage opening at the corresponding height is placed. Then, the entire sleeve rotates 60 degrees, exposing the empty storage opening on the other side to the retrieval opening. The above operation is repeated until all the top trays of the entire storage compartment are filled with film boxes. When retrieving, the principle is as described above. The original rotating shaft is rotated in the opposite direction, pushing the inner membrane box of storage port one at the corresponding height to move outward. The robotic arm takes out the outer membrane box of storage port one and puts the disassembled old membrane box into the outer side of storage port two. With the rotating shaft rotating a second time, the new membrane box of storage port one is pushed to the outside. During the rotation of the transmission belt, it contacts and squeezes the old membrane box on the outer side of storage port two and pushes the membrane box inward.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through its innovative combination tray mechanism and bidirectional transmission design, achieves a doubling of storage capacity and efficient partitioned management of new and old membrane cartridges, significantly extending the continuous working time of the device. Traditional storage devices can only store membrane cartridges in a single state on a single layer, resulting in limited capacity and frequent replacements. This invention designs each layer of the combination tray mechanism as an integrated structure of the top and bottom trays, with storage ports one and two respectively, allowing a single layer of space to be used simultaneously, independently storing new membrane cartridges and recycled old membrane cartridges, achieving "dual-purpose storage" and effectively increasing storage capacity. Combined with a rotatable sleeve design, the multi-layer combination tray mechanism can be cyclically positioned, allowing the pick-and-place ports to sequentially connect to the storage positions on each layer, further maximizing the utilization of vertical space. This structure fundamentally solves the problem of frequent equipment downtime and replacement caused by insufficient membrane cartridge capacity, making it particularly suitable for applications requiring long-term continuous monitoring, greatly improving the continuous operation capability and working efficiency of the monitoring system.

[0012] 2. This invention constructs a layered precision drive and closed-loop positioning control system based on magnetic control recognition, realizing full automation, high precision, and high reliability of the storage and retrieval process, while reducing the radiation risk of manual intervention. The device achieves non-contact, selective adsorption and drive of the transmission mechanism of any specified layer by setting telescopic magnetic heads with identification codes in each layer and matching them with magnetic control platforms composed of electromagnet arrays. The system, combined with adjusting shafts, turntables, and gear transmission, can accurately transmit uniform rotational power to the target layer, control the transmission sleeve to complete the push-out or pull-in action of the membrane box. The reset photoelectric sensor and trigger integrated on the top of the storage compartment can count the rotation angle of the combination plate mechanism in real time and calibrate the origin. The entire storage and retrieval process can be automatically completed by program instructions. The robotic arm only needs to perform simple grasping and placement in a fixed window, which improves operational safety and ensures the repeatability accuracy of storage and retrieval actions and the long-term stability of system operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to the present invention; Figure 2 This is a schematic diagram of the installation structure of the bottom transmission assembly of the storage compartment of the present invention; Figure 3This is a schematic diagram of the installation of multiple sets of combined disk mechanisms within the storage compartment of the present invention; Figure 4 This is a schematic diagram of the overall structure of the combined disk mechanism of the present invention; Figure 5 This is a schematic diagram of the installation structure of the inner turntable of the magnetic control console on the positioning cylinder of the present invention; Figure 6 This is a schematic diagram of the structure for cutting grooves on the side wall of the turntable in this invention; Figure 7 This is a schematic diagram illustrating the membrane box storage and retrieval operation on the combination disk of the present invention.

[0014] In the diagram: 1. Storage compartment; 2. Loading / unloading port; 3. Reset photoelectric sensor; 4. Combination disc mechanism; 401. Top plate; 402. Base plate; 403. Drive shaft; 404. Telescopic magnetic head; 405. Storage port one; 406. Storage port two; 5. Rotating shaft; 6. Transmission belt; 7. Rotating sleeve; 8. Positioning cylinder; 9. Adjusting shaft; 10. Top cover; 11. Trigger; 12. Magnetic control table; 13. Turntable; 14. Groove; 15. Electromagnet; 16. Gear sleeve. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-7 The present invention provides a technical solution: Example 1: This example mainly describes the overall structural layout and basic access process of the device, realizing the layered storage and automated retrieval of new and old membrane boxes; like Figure 1 and Figure 3 As shown, the storage compartment 1 has an opening 2 on its side wall for inserting and removing the film box. Multiple sets of combination tray mechanisms 4 are stacked inside the storage compartment 1. Each set of combination tray mechanisms 4 includes a top tray 401 and a bottom tray 402, which are connected to each other as an integral structure. The top tray 401 has storage openings 405 evenly distributed on it for storing new film boxes. The bottom tray 402 has storage openings 406 at the corresponding position for storing used film boxes. Adjacent combination tray mechanisms 4 are connected and fixed by support columns. The bottom combination tray mechanism 4 is equipped with a rotating sleeve 7, which is driven by an external motor to rotate as a whole. This allows the combination tray mechanism 4 to rotate 60° to switch to the position corresponding to the opening 2 after a new film box on one side has been used up, thus exposing a new film box for use. like Figure 4 and Figure 7As shown, a rotating shaft 5 is movably connected to the inner wall of the storage opening 405 of the top plate 401. A transmission belt 6 is fitted onto the rotating shaft 5. A drive shaft 403 is movably installed through the inner wall of the top plate 401, with a telescopic magnetic head 404 slidably connected to its inner end. The outer end of the drive shaft 403 meshes with a gear on the rotating shaft 5 via a gear. When the drive shaft 403 rotates, it can drive the rotating shaft 5 and the transmission belt 6 to rotate synchronously, realizing the inward and outward transport of the membrane box within the storage opening. A new membrane box is placed on the storage opening 405, as... Figure 7 As shown in the top figure, rotating the transmission sleeve 6 counterclockwise will cause the new membrane box to move outward, while the storage port 2 406 corresponds to the bottom of the transmission sleeve 6. Rotating it counterclockwise will cause the old membrane box placed on the side of the storage port 2 406 to move inward, thereby realizing the adjustment of the position of the new and old membrane boxes. like Figure 5 and Figure 6 As shown, a positioning cylinder 8 is fixedly installed inside the storage compartment 1. A magnetic control table 12 is set on its side wall corresponding to the position of the pick-up and put-out port 2. A turntable 13 is installed on the magnetic control table 12 corresponding to the position of each layer of telescopic magnetic head 404. A groove 14 is opened on the turntable 13, and electromagnets 15 are symmetrically installed in the groove. An adjustment shaft 9 is movably connected inside the positioning cylinder 8. A toothed sleeve 16 is fitted on the adjustment shaft 9 corresponding to the position of each layer of turntable 13. The toothed sleeve 16 meshes with the gear on the back side of the turntable 13 to realize the rotation control of the turntable 13. During storage and retrieval, the system controls the electromagnet 15 at the corresponding height to be energized according to the instruction, attracting the telescopic magnetic head 404 at the corresponding position of that layer. At the same time, the adjusting shaft 9 drives the turntable 13 to rotate, which in turn drives the transmission shaft 403 and the rotating shaft 5 to rotate, combined with... Figure 4 It can be understood that the telescopic magnetic head 404 has two protrusions at its end, which correspond to the electromagnet 15 in the slot 14 of the turntable 13. After the two come into contact, the rotation of the turntable 13 can realize the rotation of the transmission shaft 403, which pushes the diaphragm box on the transmission sleeve 6 to move towards the pick-up and put-out port 2. In conjunction with the robotic arm installed on the outside, the new diaphragm box is taken out. The rotating sleeve 7 can drive the entire combination plate mechanism 4 to rotate, so that different storage ports are aligned with the pick-up and put-out port 2 in sequence, realizing multi-layer and multi-station continuous operation. Example 2: This example further illustrates the device's positioning monitoring, new and old membrane cartridge circulation management, and system control logic, achieving high-capacity, long-cycle, and low-intervention membrane cartridge storage; like Figure 2 and Figure 3As shown, a top cover 10 is fixed on the top plate 401 of the top layer combination plate mechanism 4. A trigger 11 is installed on the top cover 10. A reset photoelectric sensor 3 is installed on the top of the storage compartment 1 to detect the rotation angle and position of the combination plate mechanism 4, realize rotation counting and positioning calibration, and ensure that the pick-up and put-out port 2 is precisely aligned with the target storage port. At the same time, when the trigger 11 contacts the reset photoelectric sensor 3 for the second time, it means that the entire combination plate mechanism 4 has rotated one revolution, that is, all the new membrane boxes in the storage compartment have been used up. At this time, an alarm signal is triggered. In actual operation, the alarm signal is preset to trigger when the combination plate mechanism 4 rotates 300 degrees, reminding the operator that the amount of new membrane boxes in the storage compartment 1 is low and needs to be replaced in time, giving the operator time to prepare a new storage compartment 1. like Figure 5 As shown, photoelectric sensors are set in the magnetic control console 12 corresponding to the position of each telescopic magnetic head 404. Identification codes are set on the side wall of the telescopic magnetic head 404. The system determines the current operating layer according to the identification code and controls the polarity of the electromagnet 15 in the corresponding turntable 13 to realize the adsorption and detachment of the telescopic magnetic head 404, and complete the precise layer selection control. The membrane box storage and retrieval process is as follows: When storing film boxes: Place the new film boxes in sequence outside the storage slot 405 of each layer. The system commands the magnetic control console 12 to control the corresponding layer electromagnet 15 to be energized, attracting the telescopic magnetic head 404 of that layer. At the same time, the adjusting shaft 9 drives the turntable 13 to rotate, driving the transmission shaft 403 and the rotating shaft 5 to rotate, so that the transmission sleeve 6 pushes the film box inward to the storage position. Then the rotating sleeve 7 drives the combination disk mechanism 4 to rotate a certain angle, so that the next empty position is aligned with the pick-up and drop-off slot 2. Repeat the above process until all layers are full. When retrieving the membrane box: the system reverses the rotation shaft 5 of the corresponding layer, pushing the new membrane box in storage port 1 405 outward to the retrieval port 2, where it is taken away by the external robotic arm. The old membrane box is placed outside the storage port 2 406. As the conveyor belt 6 continues to rotate, it contacts and pushes the old membrane box inward, realizing the automatic recycling and storage of the old membrane box. This design allows for the simultaneous storage of both new and old membrane cartridges in a single layer, significantly increasing storage density and extending the overall replacement cycle. It is suitable for efficient and automated storage and retrieval management of membrane cartridges in αβ radioactive aerosol online monitoring systems.

[0017] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A membrane-borne self-driven storage and retrieval device for online monitoring of αβ radioactive aerosols, comprising a storage compartment and a combination disk mechanism, characterized in that, The storage compartment has an opening for taking out and putting in. The combination tray mechanism is stacked inside the storage compartment. Adjacent combination tray mechanisms are connected and fixed by a support column. The bottom combination tray mechanism is equipped with a rotating sleeve, which is driven to rotate by an externally installed motor. The combined tray mechanism includes a top tray and a bottom tray installed inside the storage compartment. The top tray and the bottom tray are connected and integrated on the inner side. Storage opening 1 is evenly opened on the top tray, and storage opening 2 is evenly opened at the corresponding position on the bottom tray. A drive shaft is movably inserted through the inner wall of the top tray, and a telescopic magnetic head is slidably connected to the inner end of the drive shaft. Storage opening 1 is used for storing new mold boxes, and storage opening 2 is used for storing old mold boxes.

2. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 1, characterized in that, A top cover is fixed on the top plate of the top combination plate mechanism, and a trigger is installed on the top cover. A reset photoelectric sensor is installed on the top of the storage compartment for counting the rotation of the combination plate mechanism.

3. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 2, characterized in that, A rotating shaft is movably connected to the inner wall of the storage opening of the top plate. A transmission belt is sleeved on the rotating shaft. The outer end of the transmission shaft meshes with a gear installed on the rotating shaft through a sleeved gear, and the transmission belt is driven to rotate by the rotation of the transmission shaft.

4. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 3, characterized in that, A positioning cylinder is installed and fixed inside the storage compartment. A magnetic control platform is fixed on the side wall of the positioning cylinder and on the side corresponding to the retrieval port of the storage compartment. A turntable is set on the magnetic control platform and on the side corresponding to the telescopic magnetic head. A fixed rod on the back side of the turntable passes through the positioning cylinder and is movably connected to it.

5. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 4, characterized in that, The turntable has a cutting groove, and electromagnets are symmetrically installed in the cutting groove.

6. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 5, characterized in that, A photoelectric sensor is installed inside the magnetic control console and at the position of the corresponding telescopic magnetic head. An identification code is provided on the side wall of the telescopic magnetic head. The magnetic control console is used to control the polarity of the electromagnet inside the corresponding height turntable to realize the adsorption and detachment of the telescopic magnetic head.

7. A membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 6, characterized in that, An adjusting shaft is movably connected to the inner wall of the positioning cylinder. A toothed sleeve is fitted on the adjusting shaft and located on the side of the corresponding turntable. The toothed sleeve meshes with a gear on the turntable via a shaft, thereby driving the turntable to rotate.

8. The membrane-borne self-driven access device for online monitoring of αβ radioactive aerosols according to claim 7, characterized in that, The membrane-based self-driven access method is as follows: Layered storage and retrieval: During storage, the film boxes are evenly placed on the storage opening of each layer. The magnetic control unit controls the electromagnets at the corresponding heights to be energized according to the received instructions, so that the telescopic magnetic head at the end of the drive shaft can pick up the film. At the same time, the adjustment shaft rotates, so that the turntable at the corresponding height can rotate, which drives the drive shaft and the inner rotating shaft of the corresponding storage opening to rotate, moving the film box on the front-end transmission sleeve inward. Then, the film box in the storage opening at the corresponding height is placed. Then, the entire sleeve rotates 60 degrees, exposing the empty storage opening on the other side to the retrieval opening. The above operation is repeated until all the top trays of the entire storage compartment are filled with film boxes. When retrieving, the principle is as described above. The original rotating shaft is rotated in the opposite direction, pushing the inner membrane box of storage port one at the corresponding height to move outward. The robotic arm takes out the outer membrane box of storage port one and puts the disassembled old membrane box into the outer side of storage port two. With the rotating shaft rotating a second time, the new membrane box of storage port one is pushed to the outside. During the rotation of the transmission belt, it contacts and squeezes the old membrane box on the outer side of storage port two and pushes the membrane box inward.

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