CN112599279A - Automatic packaging method and system for radioactive material - Google Patents
Automatic packaging method and system for radioactive material Download PDFInfo
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- CN112599279A CN112599279A CN202011507392.2A CN202011507392A CN112599279A CN 112599279 A CN112599279 A CN 112599279A CN 202011507392 A CN202011507392 A CN 202011507392A CN 112599279 A CN112599279 A CN 112599279A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/005—Containers for solid radioactive wastes, e.g. for ultimate disposal
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/12—Closures for containers; Sealing arrangements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/34—Disposal of solid waste
- G21F9/36—Disposal of solid waste by packaging; by baling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention relates to an automatic packaging method and system for radioactive materials, wherein the system comprises the following steps: the closed system comprises an upper layer space and a lower layer space which are communicated through a station port, and the inside of the closed system is in a negative pressure environment; the upper space is internally provided with a plurality of moving assemblies, the lower space is provided with a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly, and the outside of the closed system is provided with a control device. The method and the system can ensure the full automation of the radioactive material packaging process, and the packaging process does not pollute the lower layer space of the closed system and the environment outside the closed system. The process of manual encapsulation through the glove box in the prior art is replaced, the labor cost is reduced, the safety of manual operation is guaranteed, the encapsulation efficiency is improved well, the encapsulation safety is guaranteed, and large-scale popularization can be achieved.
Description
Technical Field
The invention relates to the technical field of nuclear industry, in particular to an automatic packaging method and system for radioactive materials.
Background
In recent years, the amount of solid radioactive materials generated has increased with the development and widespread use of nuclear technology. In order to improve the temporary storage of the solid radioactive material and ensure the safety in the transfer process, the solid radioactive material needs to be packaged in a certain negative pressure environment.
In the prior art, solid radioactive materials are transported by placing the solid radioactive materials in a shielding barrel or a shielding isolator, the special shielding barrel and the shielding isolator are high in cost, the outside of the shielding barrel and the shielding isolator is completely pollution-free, the transportation process is very complex, and industrial mass operation cannot be realized.
Therefore, the prior art provides a container packaging technology, for example, a glove box is used to hermetically package a container requiring transportation and contaminated outside, so as to ensure that the outside of the packaged container is free from contamination, and further, the container is transported safely. However, the glove box type packaging process can only be operated manually, and cannot realize full automation operation.
Further, when the solid radioactive waste is packaged in a bag-sealed form and transported, the solid radioactive waste is put into a packaging bag and then sealed (e.g., heat-sealed). Because the texture of the packaging bag (such as polyethylene material and the like) used for containing the radioactive waste is soft and light and thin, the packaging bag is in a shriveled state under the negative pressure environment, so that after the radioactive waste is contained, the packaging bag is easily folded at the sealing position due to the negative pressure in the packaging bag packaging process, the packaging bag is not tightly packaged, the radioactive leakage is caused, the environment is polluted, and the health of workers is influenced.
This drawback is expected to be overcome by the person skilled in the art.
Disclosure of Invention
Technical problem to be solved
In order to solve the above problems in the prior art, the present invention provides an automatic packaging method for radioactive materials and a system thereof.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
an automatic packaging method of radioactive materials is executed in a closed system, the closed system is divided into an upper layer space and a lower layer space, a plurality of moving assemblies are arranged in the upper layer space of the closed system, a plurality of moving assemblies, plastic packaging bag assemblies, heat sealing assemblies and shearing assemblies are arranged in the lower layer space of the closed system, and a control device is arranged outside the closed system; an isolation plate with a station port is arranged between the upper layer space and the lower layer space, and the packaging method comprises the following steps:
the control device controls the movable assembly in the upper space to carry radioactive materials to pass through the station port and be placed into a plastic package bag of the plastic package bag assembly; the plastic package bag assembly is sleeved on the outer edge of the station port from the lower layer space;
the control device determines the height information of the radioactive materials in the plastic package bag according to the preset volume of the radioactive materials and the volume of the plastic package bag;
the control device sends a first moving instruction to the heat sealing assembly according to the height information so as to enable the heat sealing assembly to move to the heat sealing height;
the control device sends a preheating instruction to the heat sealing assembly, and the heat sealing assembly starts heating according to the preheating instruction so that the thermal resistance of the heat sealing assembly reaches a temperature region in the preheating instruction;
the control device sends a heat sealing instruction to a heat sealing assembly, and the heat sealing assembly moves according to the heat sealing instruction and carries out heat sealing on the plastic packaging bag to obtain a heat sealing area with a specified width;
the control device sends a second moving instruction to the shearing assembly according to the heat sealing height so as to enable the shearing assembly to move to the shearing height;
the control device sends a shearing instruction to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing instruction, so that the upper end of the plastic package bag for packaging the radioactive materials is sealed, and the lower end of the residual plastic package bag on the plastic package bag assembly is also sealed.
Optionally, before the control device controls the moving assembly in the upper space to carry the radioactive material through the station port and place the radioactive material into the plastic bag of the plastic bag assembly, the method further includes:
and when the control device determines that the plastic package bag assembly is correctly sleeved on the outer edge of the station opening, the control device controls the moving assembly of the upper layer space to remove the sealing cover of the station opening.
Optionally, the control device sends a heat-sealing instruction to a heat-sealing assembly, and the heat-sealing assembly moves and heat-seals the plastic bag according to the heat-sealing instruction to obtain a heat-sealing area with a specified width, including:
the control device sends a first heat-sealing instruction to a heat-sealing assembly, and the heat-sealing assembly moves according to the first heat-sealing instruction and performs heat sealing on the plastic packaging bag to obtain a first heat-sealing area;
the control device determines the Nth heat sealing height corresponding to the Nth heat sealing according to the first heat sealing height;
the control device sends an Nth heat sealing instruction to the heat sealing assembly according to the Nth heat sealing height, and the heat sealing assembly moves to the Nth heat sealing height according to the Nth heat sealing instruction and performs Nth heat sealing on the plastic packaging bag to obtain an Nth heat sealing area;
and N is an odd number greater than 1.
Optionally, the control device sends a second moving instruction to the cutting assembly according to the heat-seal height, so that the cutting assembly moves to the cutting height, and the method includes:
and the control device sends a second moving instruction to the shearing assembly according to the Nth heat-sealing height so as to move the shearing assembly to the shearing height matched with the (N + 1)/2 th heat-sealing height.
Optionally, a propping assembly for propping the plastic packaging bag is further arranged in the upper space;
correspondingly, the control device sends a first moving instruction to the heat sealing assembly according to the height information, so that the heat sealing assembly moves to the heat sealing height, and before the control device sends a preheating instruction to the heat sealing assembly, the method further comprises the following steps:
the control device acquires the position information of the first-time opening plastic package bag of the opening assembly according to the first-time heat sealing height;
the control device sends a third movement instruction to the propping assembly according to the position information of the first propping of the plastic packaging bag, so that the propping assembly moves to the position of the first propping of the plastic packaging bag according to the third movement instruction;
the control device sends an unfolding instruction to the unfolding assembly, and the unfolding assembly unfolds in the plastic package bag according to the unfolding instruction so that the plastic package bag has a flat surface in a first heat sealing height area; and enabling the heat sealing assembly to move according to the first heat sealing instruction and heat-seal the flat surface of the plastic packaging bag.
Optionally, before the control device sends the nth heat-seal instruction to the heat-seal assembly according to the nth heat-seal height, the method further includes:
the control device acquires the position information of the spreading component for spreading the plastic packaging bag for the Nth time according to the Nth heat-sealing height;
and the control device sends a fourth moving instruction to the opening component before sending the Nth heat-sealing instruction to the heat-sealing component, so that the opening component moves to the Nth opening position of the plastic packaging bag, and the plastic packaging bag has a flat surface in the Nth heat-sealing height area.
Optionally, the control device sends a second moving instruction to the cutting assembly according to the heat-seal height, so that the cutting assembly moves to the cutting height, and the method further includes:
the control device judges whether the temperature of the current heat-sealing area is in a preset cooling temperature range or not;
and if so, executing the step of sending the second moving instruction, otherwise, delaying the preset time and then executing the step of sending the second moving instruction.
Optionally, a temperature sensor is arranged on the heat-sealing assembly to detect the temperature of the heat-sealing assembly in real time and feed back the temperature to the control device to determine that the heat-sealing assembly reaches a preset temperature and the cooling temperature of the heat-sealing area reaches a requirement after heat sealing.
Optionally, a detector assembly is further disposed inside the lower layer space;
the control device receives monitoring information of the concentration of pollutants in the lower-layer space sent by the detector assembly in real time;
and the control device determines whether the lower layer space is polluted or not according to the monitoring information.
In another aspect, the present invention further provides an automatic packaging system for radioactive materials, comprising
The closed system comprises an upper layer space and a lower layer space which are communicated through a station port, and the interior of the closed box body is in a negative pressure environment; a plurality of moving assemblies are arranged in the upper layer space, a plurality of moving assemblies, plastic bag assemblies, heat sealing assemblies and shearing assemblies are arranged in the lower layer space, and a control device is arranged outside the closed system;
the control device executes the automatic packaging method for radioactive materials according to any one of claims 1 to 9.
(III) advantageous effects
The invention has the beneficial effects that: according to the method, the mutually isolated closed systems with the upper layer and the lower layer are arranged, radioactive materials are transferred to the upper layer space and then enter the plastic packaging bag located in the lower layer space, the closed systems strictly keep the upper layer space and the lower layer space isolated like each other in the whole process, each executing assembly is operated according to the control instruction of the control system, the full automation of the radioactive material packaging process is guaranteed, and the packaging process is guaranteed not to pollute the lower layer space of the closed system and the environment outside the closed system.
The embodiment of the invention can replace the manual packaging process through the glove box in the prior art, reduce the labor cost, ensure the safety of manual operation, better improve the packaging efficiency, ensure the packaging safety and realize large-scale popularization.
Drawings
FIG. 1 is a front view of a portion of an automated radioactive waste packaging system provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a part of the automatic packaging system for radioactive waste according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an automatic radioactive material packaging method according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a specific packaging process of radioactive materials according to an embodiment of the present invention.
[ description of reference ]
1, standing a port; 2. a heat seal assembly; 3, a shearing assembly; 4, opening the component; 10, upper level space; 20, lower layer space.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
First, in order to better explain the automatic packaging method for radioactive materials according to the present invention, an automatic packaging system for performing the automatic packaging method will be described in detail.
As shown in fig. 1 and 2, the automatic packaging method is performed in an automatic packaging system, which first includes a closed system divided into an upper space and a lower space; the upper and lower spaces are isolated from each other at any time, considering that the enclosed material contains radioactive materials, to further ensure that the radioactive materials do not leak into any undesired spaces. Wherein, a plurality of moving components are arranged in the upper space 10 of the closed system to transfer the radioactive materials to be encapsulated which are transferred by other suitable transportation mechanisms or to execute any required transferring instructions; the lower layer space 20 is provided with a plurality of moving assemblies, plastic packaging bag assemblies, heat sealing assemblies and shearing assemblies, and a control device is arranged outside the automatic packaging system.
Wherein, the upper and lower layer spaces are separated by a structure having an isolation function to the radioactive substance, for example, the upper and lower layer spaces are separated by a layered isolation plate. The partition board can be provided with a standing port 1 communicated with the upper layer space and the lower layer space, and the standing port 1 forms a passage for radioactive materials to be encapsulated to enter the encapsulation structure. It can be understood that the station port 1 is in a sealed structure when not performing the sealing operation, for example, by providing a sealing device such as a sealing cover, the sealing device can completely isolate the radioactive substance to ensure that the upper and lower spaces are in a mutually isolated state at any time. Thus, after the radioactive material has been transferred into the upper space, only the upper space 10 is in a contaminated state, and the lower space 20 and the outside of the closed system are not likely to be contaminated by the radioactive material.
For example, the upper space 10 and the lower space 20 may be both glove box structures or any closed box structures, and during the process of encapsulating the radioactive material, the upper and lower spaces are both in a vacuum environment or are processed into a negative pressure environment.
In a specific implementation process, at least one sensor can be respectively arranged in the upper layer space and the lower layer space and used for detecting the content of pollutants or radiation objects in the spaces where the sensors are respectively arranged. All the sensors are connected with a control device outside the closed system, and the detected information is transmitted to the control device in real time, so that the control device determines whether to send alarm information according to the detected information.
Therefore, the system for encapsulating radioactive materials provided by the invention has extremely high safety and can be widely applied to any environment with radioactive pollutants.
Particularly, the moving assembly of the upper layer space and the moving assembly of the lower layer space can be controlled by the control device to move up, down, left and right in the respective spaces; the plastic package bag assembly, the heat sealing assembly 2 and the shearing assembly 3 in the lower space 20 can also move up and down and left and right under the control of the control device.
The plastic bag assembly is used for hermetically sleeving a plastic bag with a packaged radioactive material on a station port 1 communicated with upper and lower layer spaces under the control of the control device, and the control device controls the moving assembly to remove sealing devices such as a sealing cover for sealing the station port after detecting that the plastic bag assembly is correctly installed on the station port 1, so that the station port 1 forms a channel for the radioactive material to pass through. At this time, the upper and lower spaces are still kept in a mutually isolated state due to the plastic bag of the plastic bag assembly.
In the whole packaging process, in order to ensure the closed state of the closed system, the interior of the closed system needs to be kept in a vacuum environment or a negative pressure environment. At this time, the plastic bag sleeved in the plastic bag assembly at the station port 1 may have wrinkles and other states which are not favorable for subsequent heat sealing. In order to solve the technical problem, in the upper space, a strutting component 4 for strutting the plastic packaging bag can be arranged, the strutting component 4 has two states: a collapsed state and an expanded state. After the opening component passes through the station port 1 and enters the plastic package bag of the plastic package bag component, the opening component 4 is in an opening state, and the opening component 4 is in a folding state in other times, so that the occupation of the upper space is reduced, and the plastic package bag can quickly enter the plastic package bag through the station port 1.
Specifically, the closed system can be made of transparent materials, so that an operator can clearly and visually know the inside of the closed system outside the closed system conveniently, the radioactive materials are packaged normally, and meanwhile, faults can be found and eliminated at the first time.
It should be noted that, since the radioactive material needs to enter the inside of the plastic bag through the station port 1, the inside of the plastic bag and the upper space are in a communicated state and in a contaminated area, when the heat sealing assembly performs heat sealing, the formed heat sealing seam cannot be only a narrow heat sealing seam, but an area with a certain width needs to be sealed, for example, multiple heat sealing seams are formed through multiple heat sealing, and the like, so that when the shearing assembly 2 performs shearing in the heat sealing area, the plastic bag outside the sheared material can be ensured to be sealed, and meanwhile, the tail of the plastic bag remained in the station port area after shearing is also sealed, and the isolated state that the upper and lower spaces are not communicated is maintained.
In practical applications, the control device may be connected to the sensor, the executing components and the like inside the closed system through an encoder cable, a power cable and the like, and in other embodiments, the control device may also be connected to the sensor, the moving component, the heat-sealing component and the like in other communication connection manners.
The packaging system for radioactive materials can effectively realize the full-automatic operation of bagging the radioactive materials, does not need to manually contact the radioactive materials or contact any new bag, old bag and the like in the full-automatic operation process, can effectively ensure the safety of operators, and can effectively improve the packaging efficiency.
Example two
Based on the foregoing packaging system shown in fig. 1 and 2, an embodiment of the present invention further provides an automatic packaging method for radioactive materials, where an execution main body of the method may be a control device, and in the whole packaging process, the upper and lower layer spaces are always isolated in the radioactive material packaging or bagging process. The packaging method of the present embodiment may include the following steps, as shown in fig. 3.
201. The control device controls the movable assembly in the upper space to carry radioactive materials to pass through the station port and be placed into a plastic package bag of the plastic package bag assembly; the plastic package bag of the plastic package bag assembly is nested at the outer edge of the station opening of the lower layer space.
In practical application, the material to be packaged is transported to a designated area of the upper space via a special transfer channel or a transfer device, which is not limited in this embodiment and can be adjusted according to actual needs. Because the transfer passage is used for conveying the radioactive materials to be packaged, the transfer passage belongs to the space directly contacting with the outer surface of the container to be packaged, and belongs to the polluted space as the upper space.
202. And the control device determines the height information of the radioactive materials in the plastic package bag according to the preset volume of the radioactive materials and the volume of the plastic package bag.
In specific application, the types and sizes of radioactive materials to be encapsulated are different, so that the control device is required to determine the volume of the radioactive materials according to the types or sizes of the radioactive materials to be encapsulated; the volume of the plastic packaging bag can be consistent, so that the volume of the plastic packaging bag can meet the packaging requirement of the radioactive material with the largest volume to be packaged; and the control device can also control different plastic package bag assemblies to carry plastic package bags with different volumes to be sleeved on the outer edge of the station opening according to different radioactive materials.
203. And the control device sends a first moving instruction to the heat sealing assembly according to the height information so as to move the heat sealing assembly to the heat sealing height.
According to the volume of the radioactive materials and the volume of the plastic packaging bag, the control device can determine the position corresponding to the heat sealing area on the plastic packaging bag, and the heat sealing assembly moves to the height corresponding to the heat sealing area under the control of the control device.
204. The control device sends a preheating instruction to the heat sealing assembly, and the heat sealing assembly starts heating according to the preheating instruction so that the thermal resistance of the heat sealing assembly reaches a temperature region in the preheating instruction.
It is understood that the first movement command and the preheating command may be a command including the height information and the preheating temperature information, that is, the heat sealing assembly starts to move and start preheating after receiving the first movement command sent by the control device, so as to save the preheating time, and after the heat sealing assembly reaches the height, the plastic sealing bag can be heat sealed at a specified position under the control of the next command of the control device.
205. And the control device sends a heat sealing instruction to the heat sealing assembly, and the heat sealing assembly moves according to the heat sealing instruction and performs heat sealing on the plastic packaging bag to obtain a heat sealing area with the specified width.
Due to the particularity of the packaging material, the heat sealing area needs to have a certain width, on one hand, the radioactive substances are prevented from leaking, on the other hand, the shearing of the shearing assembly in the next step is facilitated, and after the shearing is completed, the upper layer space and the lower layer space are still kept in a mutually isolated state.
206. And the control device sends a second moving instruction to the shearing assembly according to the heat sealing height so as to enable the shearing assembly to move to the shearing height.
207. The control device sends a shearing instruction to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing instruction, so that the upper end of the plastic package bag for packaging the radioactive materials is sealed, and the lower end of the residual plastic package bag on the plastic package bag assembly is also sealed.
Because the upper space and the lower space are required to be kept in a mutually isolated state, part of the cut plastic package bag is still kept on the plastic package bag assembly, and the lower end of the residual plastic package bag kept on the plastic package bag assembly is also sealed.
In this embodiment, the components may be electrically connected to the control device in a servo motor controlled manner. For example, the components all include a servo motor, a servo driver, a cylinder moving device, and the like, which are not limited in this embodiment and are configured according to actual needs.
According to the method, the radioactive materials are transferred to the upper layer space and then enter the plastic package bag located in the lower layer space by arranging the mutually isolated closed systems with the upper layer and the lower layer, the closed systems strictly keep the upper layer space and the lower layer space isolated like each other in the whole process, each executing assembly is operated according to the control instruction of the control system, the full automation of the radioactive material packaging process is guaranteed, and the packaging process is guaranteed not to pollute the lower layer space of the closed system and the environment outside the closed system.
In a specific implementation process, in step 201, the control device controls the mobile assembly in the upper space to carry the radioactive material to pass through the station port and place the radioactive material into the plastic package bag of the plastic package bag assembly; the plastic package bag of the plastic package bag assembly is sleeved at the outer edge of the station opening of the lower layer space, and the plastic package bag assembly also comprises
101. And when the control device determines that the plastic package bag assembly is correctly sleeved on the outer edge of the station port, the control device controls the moving assembly of the upper layer space to remove the sealing cover of the station port 1.
That is, only when the plastic bag assembly is sleeved on the outer edge of the station opening 1 and hermetically sleeved on the station opening 1, the plastic bag assembly is in a correctly sleeved state, and at the time, the sealing devices such as the sealing cover and the like on the station opening 1 are removed, so that the upper layer space and the lower layer space are still in an isolated state.
Due to the particularity of the packaging materials, the upper layer space and the lower layer space are required to be always in an isolated state, so that the control device can control the movable assembly to remove the sealing cover of the station opening after the control device determines that the plastic package bag assembly is correctly installed on the outer edge of the station opening, and a channel for placing radioactive materials is opened. There are various implementation manners for detecting whether the plastic package bag assembly is correctly installed, for example, the plastic package bag assembly can be set in-place to remind, and the like, which is not limited in this embodiment.
Because the packaged material contains radioactive substances, in specific application, the heat-sealing assembly can carry out heat sealing on the plastic package bag for a plurality of times under the control of the control device to form a plurality of heat-sealing seams, and the shearing assembly shears the heat-sealing seams positioned in the middle of the heat-sealing area, so that the upper end of the plastic package bag separated from the plastic package bag assembly after shearing is sealed, and the lower end of the plastic package bag still kept on the plastic package bag assembly is also sealed.
Specifically, as shown in fig. 4, in step S204, the control device sends a heat sealing instruction to a heat sealing assembly, and the heat sealing assembly moves according to the heat sealing instruction and heat seals the plastic bag to obtain a heat sealing area with a specified width, including:
s41, the control device sends a first heat sealing instruction to a heat sealing assembly, and the heat sealing assembly moves according to the first heat sealing instruction and carries out heat sealing on the plastic packaging bag to obtain a first heat sealing area;
s42, the control device determines the Nth heat sealing height corresponding to the Nth heat sealing according to the first heat sealing height;
s43, the control device sends an Nth heat sealing instruction to the heat sealing assembly according to the Nth heat sealing height, and the heat sealing assembly moves to the Nth heat sealing height according to the Nth heat sealing instruction and performs Nth heat sealing on the plastic packaging bag to obtain an Nth heat sealing area;
and N is an odd number greater than 1.
In practical application, compromise heat-seal efficiency and cost, N can be worth 3, carry out 3 times heat-seal promptly can, of course, also can carry out 5 times heat-seals to cut in 3 rd time heat-seal region.
First heat-seal to the Nth heat-seal, its height should be increment progressively, and the height of 1 st heat-seal is the minimum promptly, then the heat-seal subassembly will be followed vertical direction and up moved a distance, at the position that is greater than the first heat-seal height, carries out the second heat-seal, then moves a distance again, at the position that is greater than the second heat-seal height, carries out the third heat-seal, analogizes in proper order.
Step S205, the control device sends a second moving instruction to the cutting assembly according to the heat sealing height, so that the cutting assembly moves to the cutting height, which is specifically as follows:
and the control device sends a second moving instruction to the shearing assembly according to the Nth heat-sealing height so as to move the shearing assembly to the shearing height matched with the (N + 1)/2 th heat-sealing height.
In practical application, when the heat sealing assembly needs to be subjected to heat sealing for 3 times to form 3 heat sealing lines, the control device sends a second moving instruction to the shearing assembly according to the heat sealing height of the 3 rd time, and the shearing assembly moves to the shearing height matched with the heat sealing height of the 2 nd time to prepare for shearing.
In order to ensure the shearing effect in the negative pressure environment, a propping assembly for propping the plastic packaging bag is also arranged in the upper layer space;
accordingly, after step S203 and before step S204, the method further comprises:
s103, the control device acquires position information of the first opening plastic package bag of the opening assembly according to the first heat sealing height;
s104, the control device sends a third movement instruction to the propping assembly according to the position information of the first propping of the plastic packaging bag, so that the propping assembly moves to the position of the first propping of the plastic packaging bag according to the third movement instruction;
s105, the control device sends an unfolding instruction to the unfolding assembly, and the unfolding assembly is unfolded in the plastic package bag according to the unfolding instruction so that the plastic package bag has a flat surface in a first heat sealing height area; and enabling the heat sealing assembly to move according to the first heat sealing instruction and heat-seal the flat surface of the plastic packaging bag.
Every time a heat seal is completed, the strutting assembly correspondingly carries out a displacement under the control of the control assembly so as to ensure the next heat seal area, the plastic package bag has a flat surface, and the method specifically comprises the following steps:
s106, the control device acquires the position information of the expanding assembly for expanding the plastic packaging bag for the Nth time according to the Nth heat-sealing height;
and the control device sends a fourth moving instruction to the opening component before sending the Nth heat-sealing instruction to the heat-sealing component, so that the opening component moves to the Nth opening position of the plastic packaging bag, and the plastic packaging bag has a flat surface in the Nth heat-sealing height area.
In practical applications, after the heat-sealing assembly completes all heat-sealing, in step S206, before the control device sends a second moving instruction to the cutting assembly according to the height information, so that the cutting assembly moves to the cutting height matching the first heat-sealing height, the method further includes:
the control device judges whether the temperature of the current heat-sealing area is in a preset cooling temperature range or not;
and if so, executing the step of sending the second moving instruction, otherwise, delaying the preset time and then executing the step of sending the second moving instruction.
Of course, the control device may immediately execute the step of sending the second moving command after determining whether the temperature of the current heat-sealed area is in the preset cooling temperature interval: if the temperature is in the preset cooling temperature interval, the second moving instruction is an instant moving instruction; and if the temperature is still higher than the preset cooling temperature interval, the second movement instruction is a delayed movement instruction.
The step is arranged to ensure that after heat sealing, shearing is performed when the temperature of the plastic package bag is reduced to a preset temperature range, so that the shearing operation is smoothly performed, a smooth shearing opening is obtained, and the influence on a heat sealing area, which causes leakage of radioactive substances, and the pollution to the inside of the whole closed system is avoided.
Specifically, the cooling after heat sealing may be performed by a natural cooling method, or may be performed by providing an air supply assembly, and the like, which is not further limited in this embodiment.
Optionally, a temperature sensor may be disposed on the heat seal assembly to detect the temperature of the heat seal assembly in real time and feed back the temperature to the control device to determine that the heat seal assembly reaches a preset temperature and the cooling temperature of the heat seal area after heat sealing reaches a requirement.
For the encapsulation of radioactive materials, in this embodiment, a detector assembly is further disposed in the lower space;
the control device receives monitoring information of the concentration of pollutants in the lower-layer space sent by the detector assembly in real time;
and the control device determines whether the lower layer space is polluted or not according to the monitoring information.
In this embodiment, each executing component in the upper and lower spaces operates according to the control instruction of the control device, so as to ensure full automation of the material packaging process and prevent the packaging process from polluting the lower space and the external environment of the closed system with radioactive substances.
The automatic packaging system of this embodiment can replace the process of encapsulating through the glove box manual work among the prior art, reduces the cost of labor, and guarantees manual operation's safety, the better improvement encapsulation efficiency, and guarantee the safety of encapsulation, can realize extensive popularization.
It should be noted that any of the cables, encoder cables, connectors, and the like electrically connected to the control device are implemented by using a connection assembly having very high isolation and effective sealing.
In the concrete implementation process, after the material packaging and shearing are completed, the method also comprises the following steps:
and the control device sends a transfer execution instruction to the moving assembly for transporting the packaged materials in the lower layer space, so that the moving assembly transfers the packaged materials through the roll-out device based on the transfer execution instruction.
For example, after packaging, the package is transported out of the transition cabin and placed inside the shielded container by a rear roll-out device.
In addition, in practical applications, before the above steps are performed, the process of sealing the primary plastic envelope, that is, the process of heat sealing the secondary envelope, may be performed on the container with the primary plastic envelope again, which is substantially the same as the process from S201 to S207, and is not repeated again.
That is to say, the control device judges whether secondary bagging heat sealing is needed, for example, whether radiation information exists on the outer surface of the packaged material is detected, if not, the packaged material is qualified, secondary bagging is not needed, if the radiation information exists, the packaged material is determined to be unqualified, secondary bagging is needed, if not, the packaged material is directly rolled out of the transition cabin by the roll-out device, and then the packaged material is placed into the shielding container by a subsequent device. If necessary, the materials subjected to primary heat sealing are firstly grabbed by the material lifting mechanism, then the old plastic package bag is rotated to the plastic package bag storage warehouse, a new plastic package bag is rotated out from the storage warehouse to the material lifting position, the materials subjected to primary heat sealing are placed into the new plastic package bag, then secondary bag sleeving and heat sealing are carried out, finally the materials are rotated out of the transition cabin, and then the materials are placed into the shielding container by a subsequent device.
The process of the secondary bagging can be realized by adding a sealed space outside the existing closed system, for example, a second closed system, and executing components such as an internal moving component can still be connected with a control device, so that the materials subjected to primary packaging are subjected to secondary packaging, shearing, transferring and the like through a through hole between the lower layer space and the second closed system.
Further, after transporting the packaged material, the method may further comprise:
and S208, the control device sends a station opening closing instruction to a moving assembly used for removing a sealing device such as a sealing cover and the like in the upper space, so that the moving assembly moves the sealing cover to close the station opening based on the instruction.
The automatic loading method and the packaging system for radioactive materials provided by the invention can completely replace the manual packaging process of the sealed box body in the prior art, so that the labor cost is reduced, the personal safety of operators is ensured, the packaging efficiency is effectively improved, the sealing performance of packaging is ensured, the radiation pollution to the environment is avoided, and the large-scale popularization can be realized.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. The automatic packaging method of the radioactive materials is characterized in that the automatic packaging method is executed in a closed system, the closed system is divided into an upper layer space and a lower layer space, a plurality of moving assemblies are arranged in the upper layer space of the closed system, a plurality of moving assemblies, plastic packaging bag assemblies, heat sealing assemblies and shearing assemblies are arranged in the lower layer space of the closed system, and a control device is arranged outside the closed system; an isolation plate with a station port is arranged between the upper layer space and the lower layer space, and the packaging method comprises the following steps:
the control device controls the movable assembly in the upper space to carry radioactive materials to pass through the station port and be placed into a plastic package bag of the plastic package bag assembly; the plastic package bag assembly is sleeved on the outer edge of the station port from the lower layer space;
the control device determines the height information of the radioactive materials in the plastic package bag according to the preset volume of the radioactive materials and the volume of the plastic package bag;
the control device sends a first moving instruction to the heat sealing assembly according to the height information so as to enable the heat sealing assembly to move to the heat sealing height;
the control device sends a preheating instruction to the heat sealing assembly, and the heat sealing assembly starts heating according to the preheating instruction so that the thermal resistance of the heat sealing assembly reaches a temperature region in the preheating instruction;
the control device sends a heat sealing instruction to a heat sealing assembly, and the heat sealing assembly moves according to the heat sealing instruction and carries out heat sealing on the plastic packaging bag to obtain a heat sealing area with a specified width;
the control device sends a second moving instruction to the shearing assembly according to the heat sealing height so as to enable the shearing assembly to move to the shearing height;
the control device sends a shearing instruction to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing instruction, so that the upper end of the plastic package bag for packaging the radioactive materials is sealed, and the lower end of the residual plastic package bag on the plastic package bag assembly is also sealed.
2. The automated packaging method of claim 1, wherein the control device controls the moving assembly of the upper space to carry the radioactive material through the station opening and into the plastic bag of the plastic bag assembly, and the method further comprises:
and when the control device determines that the plastic package bag assembly is correctly sleeved on the outer edge of the station opening, the control device controls the moving assembly of the upper layer space to remove the sealing cover of the station opening.
3. The automated packaging method of claim 1,
controlling means sends the heat-seal instruction to heat-seal assembly, heat-seal assembly basis the heat-seal instruction removes and carries out the heat-seal to the plastic envelope bag to obtain the heat-seal region of appointed width, include:
the control device sends a first heat-sealing instruction to a heat-sealing assembly, and the heat-sealing assembly moves according to the first heat-sealing instruction and performs heat sealing on the plastic packaging bag to obtain a first heat-sealing area;
the control device determines the Nth heat sealing height corresponding to the Nth heat sealing according to the first heat sealing height;
the control device sends an Nth heat sealing instruction to the heat sealing assembly according to the Nth heat sealing height, and the heat sealing assembly moves to the Nth heat sealing height according to the Nth heat sealing instruction and performs Nth heat sealing on the plastic packaging bag to obtain an Nth heat sealing area;
and N is an odd number greater than 1.
4. The automated packaging method of claim 3,
the control device sends a second moving instruction to the shearing assembly according to the heat-sealing height so as to enable the shearing assembly to move to the shearing height, and the control device comprises:
and the control device sends a second moving instruction to the shearing assembly according to the Nth heat-sealing height so as to move the shearing assembly to the shearing height matched with the (N + 1)/2 th heat-sealing height.
5. The automated packaging method of claim 3, wherein the upper space is further provided with a spreader assembly for spreading the plastic envelope;
correspondingly, the control device sends a first moving instruction to the heat sealing assembly according to the height information, so that the heat sealing assembly moves to the heat sealing height, and before the control device sends a preheating instruction to the heat sealing assembly, the method further comprises the following steps:
the control device acquires the position information of the first-time opening plastic package bag of the opening assembly according to the first-time heat sealing height;
the control device sends a third movement instruction to the propping assembly according to the position information of the first propping of the plastic packaging bag, so that the propping assembly moves to the position of the first propping of the plastic packaging bag according to the third movement instruction;
the control device sends an unfolding instruction to the unfolding assembly, and the unfolding assembly unfolds in the plastic package bag according to the unfolding instruction so that the plastic package bag has a flat surface in a first heat sealing height area; and enabling the heat sealing assembly to move according to the first heat sealing instruction and heat-seal the flat surface of the plastic packaging bag.
6. The automated packaging method of claim 5, wherein the control device sends an nth heat seal command to the heat seal assembly based on the nth heat seal height, and the method further comprises:
the control device acquires the position information of the spreading component for spreading the plastic packaging bag for the Nth time according to the Nth heat-sealing height;
and the control device sends a fourth moving instruction to the opening component before sending the Nth heat-sealing instruction to the heat-sealing component, so that the opening component moves to the Nth opening position of the plastic packaging bag, and the plastic packaging bag has a flat surface in the Nth heat-sealing height area.
7. The automated packaging method of claim 1, wherein the control device sends a second movement command to the cutting assembly according to the heat seal height to move the cutting assembly to the cutting height, and the method further comprises:
the control device judges whether the temperature of the current heat-sealing area is in a preset cooling temperature range or not;
and if so, executing the step of sending the second moving instruction, otherwise, delaying the preset time and then executing the step of sending the second moving instruction.
8. The automated packaging method of claim 1,
the heat sealing assembly is provided with a temperature sensor, the temperature of the heat sealing assembly is detected in real time and fed back to the control device, so that the fact that the heat sealing head of the heat sealing assembly reaches a preset temperature is determined, and the cooling temperature of the heat sealing area after heat sealing reaches the requirement is determined.
9. The automated packaging method of claim 1,
a detector assembly is also arranged in the lower layer space;
the control device receives monitoring information of the concentration of pollutants in the lower-layer space sent by the detector assembly in real time;
and the control device determines whether the lower layer space is polluted or not according to the monitoring information.
10. An automatic packaging system for radioactive materials is characterized by comprising
The closed system comprises an upper layer space and a lower layer space which are communicated through a station port, and the inside of the closed system is in a negative pressure environment; a plurality of moving assemblies are arranged in the upper layer space, a plurality of moving assemblies, plastic bag assemblies, heat sealing assemblies and shearing assemblies are arranged in the lower layer space, and a control device is arranged outside the closed system;
the control device executes the automatic packaging method for radioactive materials according to any one of claims 1 to 9.
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