CN112599279B - Automatic packaging method and system for radioactive materials - Google Patents
Automatic packaging method and system for radioactive materials Download PDFInfo
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- CN112599279B CN112599279B CN202011507392.2A CN202011507392A CN112599279B CN 112599279 B CN112599279 B CN 112599279B CN 202011507392 A CN202011507392 A CN 202011507392A CN 112599279 B CN112599279 B CN 112599279B
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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 application relates to an automatic packaging method and system of radioactive materials, wherein the system comprises the following steps: the closed system comprises an upper space and a lower space which are communicated through a station opening, 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 full automation of the radioactive material packaging process, and the packaging process does not pollute the lower 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 ensured, the encapsulation efficiency is better improved, the encapsulation safety is ensured, and the large-scale popularization can be realized.
Description
Technical Field
The application relates to the technical field of nuclear industry, in particular to an automatic packaging method and system for radioactive materials.
Background
In recent years, with the development and wide application of nuclear technology, the amount of solid radioactive materials produced has increased. In order to improve the safety of the solid radioactive materials in the temporary storage and in the transportation process, the solid radioactive materials need to be packaged in a certain negative pressure environment.
In the prior art, solid radioactive materials are transported by being placed in a shielding barrel or a shielding isolator, the special shielding barrel and the shielding isolator are high in cost, and in order to ensure that 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, in the prior art, a technology for sealing a container is provided, for example, a glove box is used for sealing the container which needs to be transported and is polluted outside, so that the outside of the sealed container is ensured to be pollution-free, and further safe transportation is performed. However, the glove box packaging process can only be operated manually, and cannot be fully automated.
In addition, when the solid radioactive waste is packaged and transported in a form of a pouch, the solid radioactive waste is put into a packaging pouch and then sealed (e.g., heat-sealed). Because the packaging bag (such as polyethylene materials and the like) for containing radioactive wastes is soft and light and thin in texture, the packaging bag is in a imbibition state under the negative pressure environment, and folds are easily generated at the sealing positions due to negative pressure in the process of packaging the packaging bag after the radioactive wastes are contained, so that the packaging is not tight, the radioactivity is leaked, the environment is polluted, and the health of staff is influenced.
The above-mentioned drawbacks are to be overcome by those skilled in the art.
Disclosure of Invention
First, the technical problem to be solved
In order to solve the above problems in the prior art, the present application provides an automatic packaging method for radioactive materials and a system thereof.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the application comprises the following steps:
the automatic packaging method of the radioactive materials is implemented in a closed system, the closed system is divided into an upper space and a lower space, a plurality of moving assemblies are arranged in the upper space of the closed system, a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly are arranged in the lower space of the closed system, and a control device is arranged outside the closed system; a separation plate with a station opening is arranged between the upper space and the lower space, and the packaging method comprises the following steps:
the control device controls the movable component in the upper space to carry radioactive materials to pass through the station opening and put into a plastic package of the plastic package component; the plastic package bag component is sleeved on the outer edge of the station opening from the lower 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 preset 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 area 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 heat seals the plastic package bag so as 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 command to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing command, so that the upper end of the plastic package bag for packaging the radioactive material 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 component of the upper space to carry the radioactive material to pass through the station opening and put into the plastic package of the plastic package component, the method further comprises:
when the control device determines that the plastic package bag component is correctly sleeved on the outer edge of the station opening, the moving component in the upper space is controlled 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 package 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 the heat sealing assembly, and the heat sealing assembly moves according to the first heat sealing instruction and heat seals the plastic package bag so as 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 the nth heat sealing on the plastic package bag so as to obtain an nth heat sealing area;
the N is an odd number greater than 1.
Optionally, the control device sends a second movement 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 enable the shearing assembly to move to the shearing height with the (N+1)/2 th heat sealing height matching.
Optionally, the upper space is also provided with a spreading component for spreading the plastic package bag;
correspondingly, the control device sends a first moving instruction to the heat sealing assembly according to the height information, so that after the heat sealing assembly moves to the heat sealing height, the control device sends a preheating instruction to the heat sealing assembly, and the method further comprises:
the control device acquires the position information of the first-time opening plastic package bag of the opening assembly according to the first heat sealing height;
the control device sends a movement instruction III to the opening assembly according to the position information of the first opening plastic package bag so that the opening assembly moves to the position of the first opening plastic package bag according to the movement instruction III;
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 package.
Optionally, before the control device sends the nth heat-sealing instruction to the heat-sealing assembly according to the nth heat-sealing height, the method further includes:
the control device acquires the position information of the nth time of opening the plastic package bag of the opening assembly according to the nth time of heat sealing height;
and the control device sends a moving instruction IV to the opening assembly before sending an N-th heat sealing instruction to the heat sealing assembly, so that the opening assembly moves to the position of opening the plastic package bag for the N-th time, and the plastic package bag has a flat surface in the N-th heat sealing height area.
Optionally, the control device sends a second movement instruction to the shearing assembly according to the heat sealing height, so that before the shearing assembly moves to the shearing height, the method further comprises:
the control device judges whether the temperature of the current heat sealing area is in a preset cooling temperature interval or not;
if yes, executing the step of sending the second moving instruction, otherwise, delaying the preset time and executing the step of sending the second moving instruction.
Optionally, a temperature sensor is disposed on the heat sealing assembly, so as to detect the temperature of the heat sealing assembly in real time and feed back the temperature to the control device, so as to determine that the heat sealing assembly reaches a preset temperature, and the cooling temperature of the heat sealing area after heat sealing reaches a requirement.
Optionally, a detector assembly is further arranged in the lower space;
the control device receives monitoring information of the concentration of pollutants in the lower space sent by the detector assembly in real time;
and the control device determines whether the lower space is polluted or not according to the monitoring information.
In another aspect, the present application also provides an automatic packaging system for radioactive materials, comprising
The closed system comprises an upper space and a lower space which are communicated through a station opening, and the inside of the closed box body is in a negative pressure environment; a plurality of moving assemblies are arranged in the upper space, a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly are arranged in the lower space, and a control device is arranged outside the closed system;
the control device performs the automatic packaging method of radioactive materials according to any one of the preceding claims 1 to 9.
(III) beneficial effects
The beneficial effects of the application are as follows: according to the method, the mutually-isolated airtight systems with the upper layer and the lower layer are arranged, the radioactive materials are transported to the upper layer space and then enter the plastic package bag positioned in the lower layer space, the airtight systems strictly keep the upper layer space and the lower layer space to be isolated, each execution assembly is operated according to the control instruction of the control system, the full automation of the radioactive material encapsulation process is ensured, and the encapsulation process is ensured not to pollute the lower layer space of the airtight system and the environment outside the airtight system.
The embodiment of the application can replace the manual encapsulation process through a glove box in the prior art, reduces labor cost, ensures the safety of manual operation, better improves encapsulation efficiency, ensures the encapsulation safety, and can realize large-scale popularization.
Drawings
FIG. 1 is a partial elevation view of an automated packaging system for radioactive waste provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of a part of an automatic packaging system for radioactive waste according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of an automatic packaging method for radioactive materials according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a specific packaging process of radioactive materials according to an embodiment of the present application.
[ reference numerals description ]
1, a station opening; 2. a heat seal assembly; 3, shearing the assembly; 4, expanding the assembly; 10, upper layer space; 20, the lower space.
Detailed Description
The application will be better explained by the following detailed description of the embodiments with reference to the 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 application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
First, in order to better explain the automatic packaging method for radioactive materials of the present application, an automatic packaging system for implementing 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, and the automatic packaging system firstly comprises a closed system which is divided into an upper space and a lower space; the upper and lower layers of space are at any time isolated from each other, considering that the enclosed material carries radioactive material, to further ensure that the radioactive material does not leak into any undesired space. Wherein, a plurality of moving components are arranged in the upper space 10 of the closed system to transfer radioactive materials to be packaged or execute any required transfer instruction; the lower space 20 is provided with a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly, and a control device is arranged outside the automatic packaging system.
Wherein the upper and lower spaces are separated by a structure having an isolating effect on the radioactive substance, such as by a layered isolating plate. The isolation plate can be provided with a station port 1 communicated with the upper layer space and the lower layer space, and the station port 1 forms a channel for the radioactive materials to be packaged to enter the packaging structure. It can be understood that the station 1 is in a sealing structure when no packaging operation is performed, for example, by means of a sealing device such as a sealing cover, and the sealing device can completely isolate radioactive substances so as to ensure that the upper and lower spaces are in a mutually isolated state at any time. Thus, when the transported radioactive material enters 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 contaminated by the radioactive material.
For example, the upper space 10 and the lower space 20 may be glove box structures or any closed box structures, and in the process of packaging the radioactive materials, the upper space and the lower space are both in a vacuum environment or are processed into a negative pressure environment, and the specific pipeline structure for maintaining the negative pressure environment is not limited in this embodiment, and any pipeline capable of realizing any negative pressure environment may be realized.
In the 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 radiant matters in the space where the sensors are respectively arranged. All the sensors are connected with a control device outside the closed system, and detected information is transmitted to the control device in real time so that the control device can determine whether to send out alarm information according to the detected information.
Therefore, the system for packaging radioactive materials provided by the application has extremely high safety and can be widely applied to any environment where radioactive pollutants exist.
Particularly, the moving component of the upper layer space and the moving component of the lower layer space can be controlled to move up and down and left and right in the space where the moving component of the upper layer space and the moving component of the lower layer space are positioned by the control device; the plastic package bag assembly, the heat seal assembly 2 and the shearing assembly 3 of the lower space 20 can also move up and down and left and right under the control of the control device.
The plastic package bag assembly is used for carrying a plastic package bag for packaging radioactive materials, the plastic package bag is hermetically sleeved at the station opening 1 communicated with the upper layer space and the lower layer space under the control of the control device, and the control device can control the moving assembly to remove sealing devices such as a sealing cover for sealing the station opening after detecting that the plastic package bag assembly is correctly installed at the station opening 1 so as to enable the station opening 1 to form a channel for the radioactive materials to pass through. At this time, the upper and lower spaces remain isolated from each other due to the plastic bags of the plastic bag assembly.
In the whole packaging process, in order to ensure the sealing state of the sealing system, the interior of the sealing system needs to be kept in a vacuum environment or a negative pressure environment. At this time, the plastic package of the plastic package assembly sleeved at the position of the station opening 1 is in a state that the subsequent heat sealing is not facilitated due to wrinkles and the like. In order to solve this technical problem, can also set up the subassembly 4 that struts that is used for opening plastic envelope bag in the upper space, the subassembly 4 struts has two kinds of states: a folded state and an expanded state. After the opening assembly enters the plastic package bag of the plastic package bag assembly through the station opening 1, the opening assembly 4 is in an opening state, and the opening assembly 4 is in a folding state in the rest time, so that occupation of an upper space is reduced, and the opening assembly is beneficial to quickly entering the plastic package bag through the station opening 1.
Specifically, the airtight system can be formed by transparent materials, so that operators can clearly and intuitively know the inside of the airtight system outside the airtight system, normal operation of packaging radioactive materials can be realized, and meanwhile, faults can be discovered and eliminated in the first time.
It should be noted that, because the radioactive material needs to enter the plastic package through the station opening 1, the inside of the plastic package is in a communicating state with the upper space, and the plastic package is in a contaminated area, so when the heat-sealing assembly performs heat sealing, the formed heat-sealing seam cannot be only a narrow heat-sealing seam, and an area with a certain width needs to be sealed, for example, a plurality of heat-sealing seams are formed by heat-sealing for a plurality of times, so that when the shearing assembly 2 performs shearing in the heat-sealing area, the plastic package outside the sheared material can be ensured to be sealed, and meanwhile, the tail of the plastic package remained in the station opening area after shearing is also sealed, and the isolated state that the upper space and the lower space are not communicated is maintained.
In practical application, the control device may be connected to the sensor, each executing component, etc. inside the closed system through an encoder cable, a power cable, etc., and in other embodiments, the control device may also be connected to the sensor, the moving component, the heat sealing component, etc. in other communication connection manners, which is not limited in this embodiment, and is set according to practical needs.
The packaging system for radioactive materials of the embodiment can effectively realize full-automatic operation of bagging radioactive materials, does not need to manually contact radioactive materials in the full-automatic operation process, does not need to contact any new bag, old bag and the like, can effectively ensure the safety of operators, and can effectively improve the packaging efficiency.
Example two
Based on the above-mentioned packaging systems shown in fig. 1 and 2, the embodiment of the application also provides an automatic packaging method for radioactive materials, wherein the execution main body of the method can be a control device, and the upper and lower spaces are always isolated in the process of packaging or bagging the radioactive materials in the whole packaging 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 component in the upper space to carry radioactive materials to pass through the station opening and put into a plastic package of the plastic package component; the plastic package bag of the plastic package bag component 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 the designated area of the upper space through a special transportation channel or a transportation device, and the embodiment is not limited thereto and can be adjusted according to practical needs. The transfer channel is used for conveying radioactive materials to be packaged, and belongs to the space directly contacted with the outer surface of the container to be packaged, and the space is the same as the upper space and belongs to the pollution space.
202. The control device determines the height information of the radioactive materials in the plastic package according to the preset volume of the radioactive materials and the preset volume of the plastic package.
In specific application, the types and the sizes of radioactive materials to be packaged are different, so that a control device is required to determine the volume of the radioactive materials according to the types or the sizes of the radioactive materials to be packaged; the volume of the plastic package bag can be consistent, so that the volume of the plastic package bag can meet the packaging requirement of the radioactive material with the largest volume required to be packaged; the control device can control different plastic package bag components to carry plastic package bags with different volumes to be sleeved at 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 enable the heat sealing assembly to move to the heat sealing height.
According to the volume of the radioactive material and the volume of the plastic package bag, the control device can determine the position corresponding to the heat sealing area on the plastic package 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 area in the preheating instruction.
It can be understood that the first movement instruction and the preheating instruction can be one instruction including the height information and the preheating temperature information, that is, the heat sealing assembly can start to move and start to preheat after receiving the first movement instruction sent by the control device, so as to save preheating time, and after the heat sealing assembly reaches the height, the heat sealing assembly can heat seal the plastic package bag at the designated position under the control of the next instruction of the control device.
205. 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 heat seals the plastic package bag so as to obtain a heat sealing area with a specified width.
Because of the specificity of the packaging material, the heat sealing area needs to have a certain width, on one hand, the radioactive substance is ensured not to leak, 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 command to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing command, so that the upper end of the plastic package bag for packaging the radioactive material 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, the sheared plastic package still has part of the plastic package assembly kept on the plastic package assembly, and the lower end of the residual plastic package kept on the plastic package assembly is also sealed.
In this embodiment, the components may be electrically connected to the control device by means of a servo motor. For example, the components 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 upper and lower layers of the airtight systems which are isolated from each other are arranged, the radioactive materials are transported to the upper layer of space and then enter the plastic package bag located in the lower layer of space, the airtight systems strictly keep the upper and lower layers of space isolated, each execution assembly operates according to the control instructions of the control system, full automation of the radioactive material packaging process is guaranteed, and pollution to the lower layer of space of the airtight system and the environment outside the airtight system in the packaging process is avoided.
In the specific implementation process, in the step 201, the control device controls the moving component in the upper space to carry the radioactive material to pass through the station opening and put into the plastic package of the plastic package component; the plastic package bag of the plastic package bag component is sleeved at the outer edge of the station mouth of the lower space and comprises
101. When the control device determines that the plastic package bag component is correctly sleeved on the outer edge of the station opening, the moving component in the upper space is controlled to remove the sealing cover of the station opening 1.
That is, only when the plastic bag component is sleeved on the outer edge of the station opening 1 and is hermetically sleeved on the station opening 1, the plastic bag component is in a correctly sleeved state, and at the moment, the sealing devices such as the sealing cover and the like at the station opening 1 are removed, so that the upper space and the lower space can be still kept in an isolated state.
Because of the specificity of the packaging materials, the upper and lower spaces need to be always in an isolated state, after the control device determines that the plastic package bag component is correctly installed on the outer edge of the station opening, the control device can control the moving component to remove the sealing cover of the station opening so as to open a channel for placing radioactive materials. The implementation manner of detecting whether the plastic package assembly is correctly installed is various, for example, the plastic package assembly can be set to be in-place for reminding, and the implementation manner is not limited.
Because the packaged material contains radioactive substances, in specific application, the heat sealing assembly can heat-seal 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 at the middle position 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 and heat-seals the plastic package according to the heat-sealing instruction, so as to obtain a heat-sealed 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 heat seals the plastic package bag so as 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 the nth heat sealing on the plastic package bag so as to obtain an nth heat sealing area;
the N is an odd number greater than 1.
In practical application, the heat sealing efficiency and the cost are both considered, the value of N can be 3, namely 3 times of heat sealing can be carried out, and of course, 5 times of heat sealing can also be carried out so as to cut in the 3 rd heat sealing area.
The first heat seal to the nth heat seal should be incremental in height, i.e., the 1 st heat seal is the lowest, then the heat seal assembly will move upward a distance in the vertical direction, perform the second heat seal at a position greater than the first heat seal, then move upward a distance, perform the third heat seal at a position greater than the second heat seal, and so on.
Step S205, the control device sends a movement command two to the shearing assembly according to the heat sealing height, so that the shearing assembly moves to the shearing height, 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 enable the shearing assembly to move to the shearing height with the (N+1)/2 th heat sealing height matching.
In practical application, when the heat seal assembly needs to carry out heat seal for 3 times to form 3 heat seal lines, the control device sends a moving instruction II to the shearing assembly according to the heat seal height of the 3 rd time, and the shearing assembly moves to the shearing height matched with the heat seal height of the 2 nd time to prepare for shearing.
In order to ensure the shearing effect under the negative pressure environment, a spreading component for spreading the plastic package bag is also arranged in the upper space;
accordingly, after step S203, before step S204, the method further includes:
s103, the control device acquires the position information of the first-time opening plastic package bag of the opening assembly according to the first heat sealing height;
s104, the control device sends a moving instruction III to the opening assembly according to the position information of the first opening plastic package bag so that the opening assembly moves to the position of the first opening plastic package bag according to the moving instruction III;
s105, 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 package.
When the heat sealing is finished once, the expansion assembly correspondingly carries out displacement once under the control of the control assembly so as to ensure the next heat sealing area, and the plastic package bag has a flat surface and specifically comprises the following steps:
s106, the control device acquires the position information of the nth time of opening the plastic package bag of the opening assembly according to the nth time of heat sealing height;
and the control device sends a moving instruction IV to the opening assembly before sending an N-th heat sealing instruction to the heat sealing assembly, so that the opening assembly moves to the position of opening the plastic package bag for the N-th time, and the plastic package bag has a flat surface in the N-th heat sealing height area.
In practical application, after the heat seal assembly completes all heat seals, in step S206, the control device sends a movement instruction two to the shearing assembly according to the height information, so that before the shearing assembly moves to the shearing height matched with the first heat seal height, the method further includes:
the control device judges whether the temperature of the current heat sealing area is in a preset cooling temperature interval or not;
if yes, executing the step of sending the second moving instruction, otherwise, delaying the preset time and executing the step of sending the second moving instruction.
Of course, the control device may immediately execute the step of sending the movement command two after determining whether the temperature of the current heat-seal area is within the preset cooling temperature interval: if the second movement instruction is in the preset cooling temperature interval, the second movement instruction is a real-time movement instruction; if the temperature is still higher than the preset cooling temperature interval, the second movement instruction is a delay movement instruction.
The setting of this step is in order to ensure after the heat-seal, carries out the shearing again when the temperature of plastic envelope bag drops to preset temperature interval, guarantees going on smoothly of shearing operation and obtains smooth cutout, avoids influencing the heat-seal area, leads to the leakage of radioactive substance, pollutes inside the whole airtight system.
Specifically, the cooling after heat sealing may be performed by natural cooling, or may be performed by providing an air blowing assembly or the like, which is not limited in this embodiment.
Optionally, a temperature sensor may be disposed on the heat seal assembly, so as to detect the temperature of the heat seal assembly in real time and feed back the temperature to the control device, so as to determine that the heat seal assembly reaches a preset temperature, and that the cooling temperature of the heat seal area after heat sealing reaches a requirement.
For packaging radioactive materials, in this embodiment, a detector assembly is further disposed inside the lower space;
the control device receives monitoring information of the concentration of pollutants in the lower space sent by the detector assembly in real time;
and the control device determines whether the lower space is polluted or not according to the monitoring information.
In this embodiment, each execution 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 ensure that the packaging process does not pollute the lower space and the external environment of the closed system with radioactive substances.
The automatic packaging system of the embodiment can replace the manual packaging process through the glove box in the prior art, reduces labor cost, ensures safety of manual operation, better improves packaging efficiency, ensures packaging safety, and can realize large-scale popularization.
The cables, the encoder cables, the connectors and the like which are electrically connected with the control device are all realized by adopting a connecting assembly which has very strong isolation and very effective sealing.
In the specific implementation process, after the material packaging and shearing are completed, the method can further comprise the following steps:
the control device sends a transferring execution instruction to the moving assembly for transporting the packaged materials in the lower space, so that the moving assembly transfers the packaged materials through the transferring device based on the transferring execution instruction.
For example, the package is then transported out of the transition chamber and then placed inside the shielded container by a subsequent transfer device.
In addition, in practical application, before the steps are performed, the packaging process of the plastic package for the container for packaging the primary plastic package may be performed again, that is, the process of heat sealing the secondary plastic package, which is basically identical to the process of S201 to S207, and is not repeated for a second time.
That is, the control device determines whether the secondary bagging is required to be heat-sealed, for example, detects whether the outer surface of the packaged material has radiation information, if not, the secondary bagging is considered to be qualified and not required to be re-bagged, if the radiation information exists, the secondary bagging is confirmed to be unqualified and also required to be re-bagged, if not, the transfer cabin is directly transferred out of the transfer cabin by the transfer device, and then the transfer cabin is placed into the shielding container by the subsequent device. If necessary, the materials subjected to primary heat sealing are firstly grabbed by a material lifting mechanism, then the old plastic package bags are returned to a plastic package bag storage warehouse, a new plastic package bag is returned to a material lifting position from the storage warehouse, the materials subjected to primary heat sealing are placed into the new plastic package bags, secondary bagging and heat sealing are carried out, finally, the materials are returned to a transition cabin, and then the materials are placed into the shielding container by a follow-up device.
The secondary bagging process can be to add a sealing space outside the existing sealing system, such as a second sealing system, and the internal moving components and other executing components of the second sealing system can still be connected with the control device, so that secondary packaging, shearing, transferring and the like of the materials after primary packaging can be realized through the through holes between the lower-layer space and the second sealing system.
Further, after transporting the packaged material, the method may further comprise:
and S208, the control device sends a station opening closing command to a moving component for removing sealing devices such as sealing covers and the like in the upper space, so that the moving component moves the sealing covers to close the station opening based on the command.
The automatic packaging method and the packaging system for the radioactive materials can completely replace the prior art, reduce labor cost by sealing the manual packaging process of the box body, ensure personal safety of operators, effectively improve packaging efficiency, ensure sealing performance of packaging, avoid radiation pollution to the environment and realize large-scale popularization.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. The automatic packaging method of the radioactive materials is characterized in that the automatic packaging method is carried out in a closed system, the closed system is divided into an upper space and a lower space, a plurality of moving assemblies are arranged in the upper space of the closed system, a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly are arranged in the lower space of the closed system, and a control device is arranged outside the closed system; a separation plate with a station opening is arranged between the upper space and the lower space, and the packaging method comprises the following steps:
the control device controls the movable component in the upper space to carry radioactive materials to pass through the station opening and put into a plastic package of the plastic package component; the plastic package bag component is sleeved on the outer edge of the station opening from the lower 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 preset 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 area in the preheating instruction;
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 heat-seals the plastic package bag to obtain a heat-sealing area with a specified width, and the control device comprises:
the control device sends a first heat sealing instruction to the heat sealing assembly, and the heat sealing assembly moves according to the first heat sealing instruction and heat seals the plastic package bag so as to obtain a first heat sealing area;
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 command to the shearing assembly, and the shearing assembly shears in the corresponding heat sealing area according to the shearing command, so that the upper end of the plastic package bag for packaging the radioactive materials is sealed, and the lower ends of the residual plastic package bags on the plastic package bag assembly are also sealed;
the upper and lower layers of space are in vacuum environment or are processed into negative pressure environment, and the upper and lower layers of space are in mutual isolation state at any time;
the upper space is also provided with a spreading component for spreading the plastic package bag;
correspondingly, the control device sends a first moving instruction to the heat sealing assembly according to the height information, so that after the heat sealing assembly moves to the heat sealing height, the control device sends a preheating instruction to the heat sealing assembly, and the method further comprises:
the control device acquires the position information of the first-time opening plastic package bag of the opening assembly according to the first heat sealing height;
the control device sends a movement instruction III to the opening assembly according to the position information of the first opening plastic package bag so that the opening assembly moves to the position of the first opening plastic package bag according to the movement instruction III;
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; the heat sealing assembly moves according to the first heat sealing instruction and heat seals the flat surface of the plastic package bag;
after the opening assembly enters the plastic package bag of the plastic package bag assembly through the station opening, the opening assembly is in an opening state, and the opening assembly is in a folding state in the rest.
2. The automated packaging method of claim 1, wherein the control device controls the moving assembly of the headspace to carry the radioactive material through the station opening prior to placement into the plastic bag of the plastic bag assembly, the method further comprising:
when the control device determines that the plastic package bag component is correctly sleeved on the outer edge of the station opening, the moving component in the upper space is controlled to remove the sealing cover of the station opening.
3. The automated packaging method of claim 1, wherein,
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 heat-seals the plastic package bag so as to obtain a heat-sealing area with a specified width, and the control device further comprises:
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 the nth heat sealing on the plastic package bag so as to obtain an nth heat sealing area;
the N is an odd number greater than 1.
4. The automatic packaging method of claim 3, wherein,
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 enable the shearing assembly to move to the shearing height with the (N+1)/2 th heat sealing height matching.
5. The automated packaging method of claim 3, wherein the control device sends an nth heat seal command to the heat seal assembly based on an nth heat seal height, the method further comprising:
the control device acquires the position information of the nth time of opening the plastic package bag of the opening assembly according to the nth time of heat sealing height;
and the control device sends a moving instruction IV to the opening assembly before sending an N-th heat sealing instruction to the heat sealing assembly, so that the opening assembly moves to the position of opening the plastic package bag for the N-th time, and the plastic package bag has a flat surface in the N-th heat sealing height area.
6. The automated packaging method of claim 1, wherein the control device sends a movement command two to the shear assembly based on the heat seal height to move the shear assembly to the shear height, the method further comprising:
the control device judges whether the temperature of the current heat sealing area is in a preset cooling temperature interval or not;
if yes, executing the step of sending the second moving instruction, otherwise, delaying the preset time and executing the step of sending the second moving instruction.
7. The automated packaging method of claim 1, wherein,
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 heat sealing head of the heat sealing assembly is determined to reach the preset temperature, and the cooling temperature of the heat sealing area after heat sealing reaches the requirement.
8. The automated packaging method of claim 1, wherein,
a detector component is arranged in the lower space;
the control device receives monitoring information of the concentration of pollutants in the lower space sent by the detector assembly in real time;
and the control device determines whether the lower space is polluted or not according to the monitoring information.
9. An automatic packaging system for radioactive materials, comprising
The closed system comprises an upper space and a lower space which are communicated through a station opening, and the inside of the closed system is in a negative pressure environment; a plurality of moving assemblies are arranged in the upper space, a plurality of moving assemblies, a plastic package bag assembly, a heat sealing assembly and a shearing assembly are arranged in the lower space, and a control device is arranged outside the closed system;
the control device performs the automatic packaging method of radioactive materials according to any one of the preceding claims 1 to 8.
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