Sealed Co-60 radioactive source container for nuclear emergency exercise

Abstract

The utility model discloses a sealed Co-60 radioactive source container for nuclear emergency exercise, which belongs to the technical field of radioactive source containers and comprises an outer casing, a shielding inner layer, a Beidou positioning module and an automatic sealing component, the Beidou positioning module is mounted at the top of the inner side of the outer casing, the shielding inner layer is arranged in the outer casing, and the automatic sealing component is mounted on the outer casing. A source storage groove is formed in the middle of the shielding inner layer, an automatic sealing assembly is formed over the source storage groove, and the automatic sealing assembly comprises a sliding top cover, a shielding inner cover and a motor. The beneficial effects of the utility model are that when the radioactive source loss emergency exercise is simulated, the Co-60 radioactive source can be placed in the source storage groove of the specific container, and ray shielding and sealing can be automatically carried out on the Co-60 radioactive source under the action of the automatic sealing assembly, so that the sealing effect is greatly enhanced, nuclear emergency exercise workers can be effectively protected, and meanwhile, the safety of the nuclear emergency exercise workers is improved. And through the Beidou positioning module arranged in the container, the requirement of real-time positioning can be met, and workers can conveniently check and confirm in time.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive source containers, in particular to a sealed Co-60 radioactive source container used for nuclear emergency drills. Background Art

[0002] Co-60 radioactive sources are primarily used in irradiation sterilization, penetrating detection, and medical applications. The high-energy gamma rays they emit have greater shielding penetration capabilities than other radioactive sources, placing stricter demands on personnel radiation protection. During transfer and storage, radioactive sources can be placed in dedicated containers. GBZ114-2006, "Radiation Health Protection Standard for Sealed Radioactive Sources and Sealed Gamma Source Containers," stipulates that the design of sealed gamma source containers must take into account the type of radioactive source, its activity, radiation energy, method of use and transportation, packaging level, and leakage radiation level.

[0003] In the prior art, Co-60 radioactive source containers are mostly traditional lead boxes or lead barrels, which generally only have the function of storing radioactive sources. In the past, improvements to containers mainly focused on increasing capacity or realizing dose monitoring, while there was less optimization of the radioactive source access process that has a greater impact on workers. When used in emergency drills simulating the loss of radioactive sources, the Co-60 radioactive source needs to be taken out of the container. Frequent taking and putting operations at the drill site may generate a large ambient dose, bringing high risks to workers in daily use. There is a lack of sealed Co-60 radioactive source containers specifically for nuclear emergency drills. In addition, most of the Co-60 radioactive source containers in the prior art are not very practical and lack functions such as real-time positioning and safety protection. The pressure resistance and service life also need to be improved. At the same time, the invention patent with publication number CN117198578A discloses a medical radioactive source transport container, which involves and the technical field of radioactive material transportation equipment, the container includes a transport bracket, a protective cover and a shielding container, the shielding container is placed in the protective cover, and the protective cover and the shielding container are fixed on the transport bracket; the transport bracket includes a top plate and a bottom plate, and bolt holes and positioning pin holes are opened on the flange surface of the top plate; a fixing piece is provided in the middle of the upper part of the top plate; the protective cover includes an outer cylinder and an inner cylinder, and a flange seat is provided at the bottom of the outer cylinder; wood and insulation material are filled between the outer cylinder and the inner cylinder; the shielding container includes a container body and a lead plug, and the container body includes an outer shell and an inner shell, and lead is filled between the outer shell and the inner shell; a main body bottom plate is provided at the bottom of the outer shell, which is connected and fixed to the transport bracket; the inner shell has three steps, the upper two sections accommodate lead plugs, and the lowest section accommodates cargo bags; the lead plug includes a cylinder, the inside of the cylinder is filled with lead columns, and the cylinder bottom plate is fixed with bolts to the radioactive source hanging basket, which is not convenient for real-time positioning of the container, and its practicality and durability need to be improved. Utility Model Content

[0004] In order to overcome the problems in the prior art of Co-60 radioactive source containers used for emergency drills simulating the loss of radioactive sources, most of which are not very practical, lack functions such as real-time positioning and safety monitoring, and have room for improvement in pressure resistance and service life, which poses a high risk to staff in daily use. The utility model provides a sealed Co-60 radioactive source container for nuclear emergency drills, comprising an outer shell, a shielding inner layer, a Beidou positioning module and an automatic sealing component, wherein the Beidou positioning module is installed on the top of the inner side of the outer shell, a shielding inner layer is provided inside the outer shell, a source storage tank is formed in the middle of the shielding inner layer, and an automatic sealing component is formed directly above the source storage tank, wherein the automatic sealing component comprises a sliding top cover, a shielding inner cover and a motor, wherein the sliding top cover and the shielding inner cover are respectively arranged on the top of the outer shell and the shielding inner layer, and the sliding top cover and the shielding inner cover are connected to the motor via a threaded telescopic component.

[0005] During emergency drills simulating the loss of a radioactive source, the Co-60 radioactive source can be placed in the source storage tank of a specific container, and automatically shielded and sealed by the sealing component, greatly enhancing the sealing effect and effectively protecting the nuclear emergency drill personnel. At the same time, the Beidou positioning module installed inside the container can meet the requirements of real-time positioning, facilitating timely viewing and confirmation by personnel, and further improving the safety monitoring effect of the container.

[0006] Preferably, an audible and visual alarm and a signal transmitting module are respectively installed on one side of the top of the outer shell, and the Beidou positioning module is electrically connected to the audible and visual alarm and the signal transmitting module.

[0007] Preferably, a sliding groove is formed on the top of the outer shell and the top of the shielding inner layer from the center position to the edge position, and the two sliding grooves are slidably connected to the sliding top cover and the shielding inner cover respectively.

[0008] Preferably, the threaded telescopic assembly includes a movable plate and a telescopic screw, the two ends of the movable plate are connected to the sliding top cover and the shielding inner cover, the middle part of the movable plate is threadedly connected to the telescopic screw, the telescopic screw is connected to the movable end of the motor and can drive the sliding top cover and the shielding inner cover to move horizontally along the two sliding grooves.

[0009] Preferably, a control compartment is formed on the side of the inner part of the outer shell away from the automatic sealing component, a power module is installed in the control compartment, the Beidou positioning module is installed above the power module, and the Beidou positioning module is electrically connected to the power module.

[0010] Preferably, an electric lifting column is installed inside the source storage tank, and a placement platform is installed on the top of the electric lifting column.

[0011] The sound and light alarm installed on the top of the Co-60 radioactive source container can be linked to the Beidou positioning module, and the remote controller can send out sound and light alarms to facilitate quick search by staff. The electric lifting column and placement platform installed inside the Co-60 radioactive source container can raise the platform during storage, and lower it to the source storage tank after the Co-60 radioactive source is placed, realizing automated operation, avoiding direct contact by staff, and further improving safety.

[0012] Preferably, a reinforcement sleeve is provided on the outside of the outer shell, and an insulating inner layer is provided on the inner wall of the outer shell.

[0013] By setting a reinforcing sleeve on the outside of the Co-60 radioactive source container, the container strength can be improved, the pressure protection capability can be enhanced, and the container can be prevented from being damaged. At the same time, an insulating layer is set inside the Co-60 radioactive source container to improve the anti-static interference capability and avoid affecting the normal use of the container.

[0014] Preferably, the outer shell is made of stainless steel, and the shielding inner layer is made of lead.

[0015] Preferably, the outer shell is cylindrical, the source reservoir is a cylindrical channel, and the top is connected to the interior of the outer shell.

[0016] Preferably, a sealing gasket is provided on the top of the sliding top cover, and a high-temperature resistant coating is provided on the outer surface of the outer shell.

[0017] The sealing gasket can strengthen the sealing of the connection between the sliding top cover and the outer shell to avoid leakage. The high-temperature resistance of the container can be improved by providing a high-temperature resistant coating.

[0018] Beneficial effects:

[0019] The beneficial effects produced by adopting the technical solution of this utility model are as follows:

[0020] (1) During the emergency drill simulating the loss of a radioactive source, the Co-60 radioactive source can be placed in the source storage tank of a specific container, and the radiation shielding and sealing are automatically performed under the action of the sealing component, which greatly enhances the sealing effect and can effectively protect the nuclear emergency drill personnel. At the same time, the Beidou positioning module installed inside the container can meet the requirements of real-time positioning, which is convenient for the personnel to check and confirm in time, and further improves the safety monitoring effect of the container.

[0021] (2) The sound and light alarm installed on the top of the Co-60 radioactive source container can be linked to the Beidou positioning module, and the remote controller can send out sound and light alarms, which is convenient for staff to find quickly. The electric lifting column and placement platform installed inside the Co-60 radioactive source container can raise the platform during storage, and lower it to the source storage tank after the Co-60 radioactive source is placed, realizing automated operation, avoiding direct contact between staff and the source, and further improving safety.

[0022] (3) By setting a reinforcing sleeve on the outside of the Co-60 radioactive source container, the strength of the container can be improved, the pressure protection capability can be enhanced, and the container can be prevented from being damaged. At the same time, an insulating layer is set inside the Co-60 radioactive source container to improve the anti-static interference capability and avoid affecting the normal use of the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a sealed Co-60 radioactive source container used in nuclear emergency drills according to the present invention;

[0025] Figure 2 This is a schematic top view of the structure of a sealed Co-60 radioactive source container used in nuclear emergency drills according to the present invention;

[0026] Figure 3 This is a schematic diagram of the internal connection structure of a sealed Co-60 radioactive source container used in nuclear emergency drills of the present invention;

[0027] Figure 4 The utility model is a structural schematic diagram of the upper outer shell of a sealed Co-60 radioactive source container used for nuclear emergency drills.

[0028] In the figure: 1. Outer shell; 2. Sliding top cover; 3. Slide groove; 4. Sound and light alarm; 5. Shielded inner layer; 6. Source storage tank; 7. Electric lifting column; 8. Placement platform; 9. Shielded inner cover; 10. Motor; 11. Power module; 12. Beidou positioning module; 13. Threaded telescopic assembly; 14. Insulated inner layer; 15. Reinforced sleeve; 16. Sealing gasket; 17. Signal transmission module. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] This implementation method places the Co-60 radioactive source in the source storage tank of a specific container, and automatically shields and seals it with radiation under the action of the sealing component, greatly enhancing the sealing effect and effectively protecting nuclear emergency drill personnel. At the same time, the Beidou positioning module installed inside the container can meet the requirements of real-time positioning, facilitating timely viewing and confirmation by personnel, and further improving the safety monitoring effect of the container. The specific implementation method is as follows:

[0031] like Figures 1 to 4 As shown, a sealed Co-60 radioactive source container for nuclear emergency drills comprises an outer shell 1, a shielding inner layer 5, a Beidou positioning module 12, and an automatic sealing assembly. The Beidou positioning module 12 is mounted on the top inner side of the outer shell 1. The outer shell 1 is provided with a shielding inner layer 5, with a source reservoir 6 formed in the middle thereof. The automatic sealing assembly is located directly above the source reservoir 6. The automatic sealing assembly comprises a sliding top cover 2, a shielding inner cover 9, and a motor 10. The sliding top cover 2 and the shielding inner cover 9 are respectively disposed on the top of the outer shell 1 and the shielding inner layer 5, and are connected to the motor 10 via a threaded telescoping assembly 13. During an emergency drill simulating the loss of a radioactive source, a Co-60 radioactive source can be placed in the source reservoir 6 of a specific container. The automatic sealing assembly automatically shields and seals the source, significantly enhancing the sealing effect. Furthermore, the Beidou positioning module 12 disposed within the container satisfies real-time positioning requirements, facilitating timely inspection and confirmation by personnel, and further improving the safety monitoring of the container.

[0032] By remotely controlling the opening of the sliding top cover 2, the Co-60 radioactive source can be raised to the outside of the container via the electric lifting column 7 and irradiate the surrounding area with gamma rays. Workers can use radiation monitoring equipment to quickly determine the location of the radioactive source. After the exercise, the Co-60 radioactive source is lowered to the initial position via the lifting column, and the sliding top cover 2 is closed by remote control, which can effectively protect the nuclear emergency exercise workers.

[0033] Specifically, an audible and visual alarm 4 and a signal transmission module 17 are mounted on one side of the top of the outer shell 1, and the Beidou positioning module 12 is electrically connected to the audible and visual alarm 4 and the signal transmission module 17. The signal transmission module 17 connects to the Beidou positioning module 12 and transmits real-time positioning signals remotely, making it easy for staff to remotely view positioning information. Furthermore, the signal transmission module 17 allows the container to be controlled using radio signals. The audible and visual alarm 4, mounted on the top of the Co-60 radioactive source container, is linked to the Beidou positioning module 12 and the signal transmission module 17, allowing them to be remotely controlled to emit audible and visual alarms, facilitating quick retrieval by staff.

[0034] Specifically, the top of the outer shell 1 and the top of the shielding inner layer 5 are each formed with a slide groove 3 from the center to the edge. The two slide grooves 3 are respectively slidably connected to the sliding top cover 2 and the shielding inner cover 9. By moving the sliding top cover 2 and the shielding inner cover 9, the outer shell 1 and the shielding inner layer 5 can be sealed separately.

[0035] Specifically, the threaded telescopic assembly 13 includes a movable plate and a telescopic screw. The two ends of the movable plate are connected to the sliding top cover 2 and the shielded inner cover 9. The middle part of the movable plate is threadedly connected to the telescopic screw. The telescopic screw is connected to the movable end of the motor 10 and can drive the sliding top cover 2 and the shielded inner cover 9 to move horizontally along the two slide grooves 3. The provision of the threaded telescopic assembly 13 can achieve synchronous movement of the sliding top cover 2 and the shielded inner cover 9. After the container is opened or closed at the same time, the Co-60 radioactive source can be accessed. After the work is completed, the sliding top cover 2 and the shielded inner cover 9 are translated in the opposite direction to their original positions for closure. A displacement sensor can also be provided on the threaded telescopic assembly 13 to provide real-time feedback of the position information of the sliding top cover 2 and the shielded inner cover 9 to the control center. At the same time, the threaded telescopic assembly 13, which serves as a linkage structure, can be provided with a mechanical return device to automatically reset after a power outage, further improving the practicality of the container.

[0036] Specifically, a control compartment is formed inside the outer shell 1 on a side away from the automatic sealing assembly. A power module 11 is installed within the control compartment. A Beidou positioning module 12 is mounted above the power module 11 and electrically connected to the Beidou positioning module 12. This power module 11 supplies power to the electronic components within the container and can also be equipped with a power monitoring system to provide timely alarms in the event of abnormal conditions.

[0037] Specifically, an electric lifting column 7 is installed inside the source storage tank 6, and a placement platform 8 is installed on the top of the electric lifting column 7. By setting the electric lifting column 7 and the placement platform 8 inside the Co-60 radioactive source container, the platform can be raised during storage. After the Co-60 radioactive source is placed, the platform can be lowered into the source storage tank 6, realizing automated operation, avoiding direct contact with staff, and further improving safety.

[0038] Specifically, a reinforcing sleeve 15 is provided on the exterior of the outer shell 1, and an insulating inner layer 14 is provided on the inner wall of the outer shell 1. The reinforcing sleeve 15 provided on the exterior of the Co-60 radioactive source container improves the container's strength, enhances its pressure resistance, and prevents damage to the container. Furthermore, the insulating inner layer 14 provided inside the Co-60 radioactive source container improves its anti-static interference capability, preventing it from affecting normal use.

[0039] Specifically, the outer shell 1 is made of stainless steel, the shielding inner layer 5 is made of lead, and may also be made of iron, depleted uranium, tungsten or other materials, and the insulating inner layer 14 is made of epoxy resin insulating material.

[0040] Specifically, the outer shell 1 is cylindrical, the source storage tank 6 is a cylindrical channel, and the top is connected to the interior of the outer shell 1.

[0041] Specifically, a sealing gasket 16 is provided on the top of the sliding cover 2, and a high-temperature resistant coating is provided on the outer surface of the outer shell 1. The sealing gasket 16 can strengthen the sealing of the connection between the sliding cover 2 and the outer shell 1 to prevent leakage, and the high-temperature resistant coating can improve the high-temperature resistance of the container.

[0042] Working principle: During the emergency drill simulating the loss of radioactive sources, the Co-60 radioactive source can be placed in the source storage tank of a specific container, and the sealing component will automatically shield and seal it against radiation, greatly enhancing the sealing effect. By remotely controlling the sliding cover to open, the Co-60 radioactive source can be raised to the outside of the container through the lifting column and irradiate the surrounding area with gamma rays. The staff can use the radiation monitoring equipment to quickly determine the location of the radioactive source. After the drill, the Co-60 radioactive source is lowered to the initial position through the lifting column, and the sliding cover is closed by remote control, which can effectively protect the nuclear emergency drill staff. At the same time, the Beidou positioning module installed inside the container can meet the real-time positioning requirements of the container, which is convenient for the staff to check and confirm in time, and further improves the container. The safety monitoring effect of the device is improved. The sound and light alarm installed on the top of the Co-60 radioactive source container can be associated with the Beidou positioning module, and the remote controller can send out sound and light alarms to facilitate staff to find quickly. The electric lifting column and placement platform installed inside the Co-60 radioactive source container can raise the platform during storage. After the Co-60 radioactive source is placed, the platform can be lowered to the source storage tank to realize automatic operation, avoid direct contact with staff, and further improve safety. The reinforcing sleeve installed on the outside of the Co-60 radioactive source container can improve the strength of the container, enhance the pressure protection capability, and avoid damage to the container. At the same time, an insulating layer is provided inside the Co-60 radioactive source container to improve the anti-static interference capability and avoid affecting the normal use of the container.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sealed Co-60 radioactive source container for nuclear emergency drills, characterized in that: The invention comprises an outer shell (1), a shielding inner layer (5), a Beidou positioning module (12) and an automatic sealing component, wherein the Beidou positioning module (12) is installed on the top of the inner side of the outer shell (1), a shielding inner layer (5) is provided inside the outer shell (1), a storage tank (6) is formed in the middle of the shielding inner layer (5), and an automatic sealing component is formed directly above the storage tank (6), and the automatic sealing component comprises a sliding top cover (2), a shielding inner cover (9) and a motor (10), wherein the sliding top cover (2) and the shielding inner cover (9) are respectively provided on the top of the outer shell (1) and the shielding inner layer (5), and the sliding top cover (2) and the shielding inner cover (9) are both connected to the motor (10) through a threaded telescopic component (13).

2. A sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: An audible and visual alarm (4) and a signal transmitting module (17) are respectively installed on one side of the top of the outer shell (1), and the Beidou positioning module (12) is electrically connected to the audible and visual alarm (4) and the signal transmitting module (17).

3. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: Slide grooves (3) are respectively formed on the top of the outer shell (1) and the top of the shielding inner layer (5) from the center position to the edge position, and the two slide grooves (3) are respectively slidably connected to the sliding top cover (2) and the shielding inner cover (9).

4. A sealed Co-60 radioactive source container for nuclear emergency drills according to claim 3, characterized in that: The threaded telescopic assembly (13) includes a movable plate and a telescopic screw, the two ends of the movable plate are connected to the sliding top cover (2) and the shielding inner cover (9), the middle part of the movable plate is threadedly connected to the telescopic screw, and the telescopic screw is connected to the movable end of the motor (10) and can drive the sliding top cover (2) and the shielding inner cover (9) to move horizontally along the two slide grooves (3).

5. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: A control compartment is formed on a side of the outer shell (1) away from the automatic sealing component, a power module (11) is installed in the control compartment, the Beidou positioning module (12) is installed above the power module (11), and the Beidou positioning module (12) is electrically connected to the power module (11).

6. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: An electric lifting column (7) is installed inside the source storage tank (6), and a placement platform (8) is installed on the top of the electric lifting column (7).

7. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: A reinforcing sleeve (15) is provided on the outside of the outer shell (1), and an insulating inner layer (14) is provided on the inner wall of the outer shell (1).

8. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: The material of the outer shell (1) is stainless steel, and the material of the shielding inner layer (5) is lead.

9. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: The outer shell (1) is cylindrical, and the source storage tank (6) is a cylindrical channel, the top of which is in communication with the interior of the outer shell (1).

10. The sealed Co-60 radioactive source container for nuclear emergency drills according to claim 1, characterized in that: A sealing gasket (16) is provided on the top of the sliding top cover (2), and a high-temperature resistant coating is provided on the outer surface of the outer shell (1).

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