Radioactive gas source box assembly and filling shielding method thereof

Abstract

The invention discloses a radioactive gas source box assembly and a filling shielding method thereof. The radioactive gas source box assembly comprises a source box body which comprises a gas chamber and a breather pipe communicated with the gas chamber; the packaging cover is arranged above the gas chamber, the packaging cover is connected with the side, facing the ventilation pipe, of the gas chamber, and the ventilation pipe is located in the packaging cover; wherein the source box body and the packaging cover form an initial source box. The sealing and transporting reliability of the radioactive gas source can be guaranteed, the leakage of the radioactive gas source in the packaging process can be avoided through a filling shielding method, the health of workers is not affected, and the safety of the working environment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical engineering, and in particular to a radioactive gas source box assembly and a filling and shielding method thereof. Background Art

[0002] Due to the unique properties of radioactive gases, they must be stored in source cartridges for applications such as thickness measurement and monitoring. Kr-85 radiation sources, which have abundant beta radiation, are primarily used to measure material thickness and density by measuring the level of radiation transmitted through the material. Thickness gauges based on Kr-85 source cartridges are primarily used to measure the areal density of lithium battery electrodes. Since lithium battery negative electrodes are typically based on copper foil, the Kr-85 beta radioactive source is the only device currently capable of accurately measuring their areal density. Therefore, the preparation of Kr-85 gas source cartridges is of great economic value. Furthermore, the filling of source cartridges for other radioactive gases also plays an important role. For example, many countries have developed automated xenon monitoring systems to meet atmospheric radioxenon monitoring requirements. After radioactivity measurement, xenon samples are temporarily transferred to stainless steel for archiving. The maximum volume of the archived sample is approximately 350 mL. If suspicious information is found, the archived sample must be sent to a designated radionuclide laboratory for detailed analysis and measurement. To improve detection sensitivity, the radioxenon is transferred to a 6-20 mL source cartridge for analysis.

[0003] Radioactive gas is prone to leakage during the filling process, potentially exposing operators to internal and external radiation exposure. Furthermore, leaks can pollute the environment. Given the importance and widespread use of radioactive gas source cartridges, as well as their inherent radioactivity and toxicity, remote automated filling and safe storage of radioactive gas are crucial. Currently, manual filling can be hazardous to workers. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides a radioactive gas source box assembly and a filling and shielding method thereof, wherein the radioactive gas source is encapsulated by the radioactive gas source box assembly, which can ensure the reliability of the sealing and transportation of the radioactive gas source. The filling and shielding method can avoid the leakage of the radioactive gas source during the packaging process, which affects the health of the workers and improves the safety of the working environment.

[0006] Specifically, the following technical solutions are included:

[0007] An embodiment of the first aspect of the present invention provides a radioactive gas source box assembly, the radioactive gas source box assembly comprising:

[0008] The source box body includes a gas chamber and a vent pipe communicating with the gas chamber;

[0009] a packaging cover, disposed above the gas chamber, and connected to a side of the gas chamber facing the vent pipe, wherein the vent pipe is located inside the packaging cover;

[0010] The source box body and the packaging cover form an initial source box.

[0011] Optionally, the radioactive gas source box assembly further includes:

[0012] The protective mold includes a mold bottom and a mold cover, wherein the mold bottom and the mold cover form a receiving space, and the initial source box is arranged in the receiving space. The mold bottom and the mold cover are detachably connected to form an intermediate source box.

[0013] Optionally, the protective mold is made of copper;

[0014] The material of the side of the gas chamber facing away from the ventilation pipe is titanium alloy.

[0015] Optionally, the radioactive gas source box assembly further includes:

[0016] The isolation barrel comprises a barrel bottom and a barrel cover. A placement space is formed in the barrel bottom. The placement space is configured to accommodate a plurality of the intermediate source boxes. The isolation barrel is made of lead.

[0017] An embodiment of the second aspect of the present invention provides a method for filling and shielding a radioactive gas source cartridge assembly, which is used to install the radioactive gas source cartridge assembly. The method comprises the following steps:

[0018] Place the buffer tank containing the radioactive gas source and the source box body in the glove box;

[0019] Introducing the radioactive gas source in the buffer tank into the original body;

[0020] The source box body is sealed to complete the filling of the radioactive gas source.

[0021] Optionally, introducing the radioactive gas source in the buffer tank into the original body comprises:

[0022] The gas chamber is evacuated based on the vent pipe, so that the gas chamber forms a negative pressure chamber;

[0023] The vent pipe is then connected to the buffer tank through a pipeline, and the radioactive gas source enters the gas chamber.

[0024] Optionally, sealing the source box body includes:

[0025] A sealing clamp is provided in the glove box, and the vent pipe is squeezed and sealed by the sealing clamp;

[0026] The glove box is provided with a pneumatic scissors, which cuts off the vent pipe after extrusion and sealing based on the pneumatic scissors;

[0027] The filling of the radioactive gas source is completed.

[0028] Optionally, the filling and shielding method further includes:

[0029] The filled source box body is moved to the welding station in the glove box by a first six-axis manipulator;

[0030] The first six-axis manipulator moves the packaging cover and places it above the source box body;

[0031] Pressing the packaging cover onto the source box body by a pressing mechanism above the welding station;

[0032] The welding station welds the packaging cover and the source box body to obtain an initial source box.

[0033] Optionally, the radioactive gas source box assembly further includes a protective mold, including a mold bottom and a mold cover, the mold bottom and the mold cover forming an accommodation space, the initial source box is disposed in the accommodation space, the mold bottom and the mold cover are detachably connected, and the filling and shielding method further includes:

[0034] Placing the mold bottom at a mold bottom station in the glove box, and moving the initial source box into the mold bottom using a second six-axis manipulator;

[0035] The second six-axis manipulator grabs the mold cover, moves it to the mold bottom station, and presses the mold cover and the mold bottom tightly;

[0036] The third six-axis manipulator absorbs the screws and moves to the mold bottom station, connects the mold cover and the mold bottom by screws, and obtains the intermediate source box.

[0037] Optionally, the radioactive gas source box assembly further comprises: an isolation barrel comprising a barrel bottom and a barrel cover, wherein a placement space is formed in the barrel bottom, and the placement space is configured to accommodate a plurality of the intermediate source boxes; the isolation barrel is made of lead, and the filling and shielding method further comprises:

[0038] In the glove box, the intermediate source box is moved to the barrel bottom station using the third six-axis manipulator, and the intermediate source box is placed in the barrel bottom;

[0039] When the barrel bottom is not fully filled with the intermediate source box, the third six-axis manipulator reciprocates between the mold bottom station and the barrel bottom station;

[0040] When the bottom of the barrel is filled with the intermediate source box, the third six-axis manipulator grabs the barrel cover, moves to the top of the barrel bottom, and obtains the radioactive gas source box assembly.

[0041] The embodiment of the present invention provides a radioactive gas source box assembly and a filling and shielding method thereof, wherein the radioactive gas source box assembly includes a source box body and a packaging cover covering the source box body, the source box body includes a gas chamber and a vent pipe connected to the gas chamber, the gas chamber is evacuated through the vent pipe, so that the gas chamber forms a negative pressure, and then the vent pipe is connected to a buffer tank containing a radioactive gas source, and the pressure difference allows the radioactive gas source in the buffer tank to directly enter the gas chamber through the vent pipe, and then the vent pipe is sealed by a sealing clamp, and finally the vent pipe is cut off from the sealing part, which can ensure the reliability and stability of the radioactive gas source packaging. Then, the packaging cover is added to the source box body on the side with the vent pipe, and the packaging cover and the source box body are sealed and fixedly connected to further ensure the reliability and stability of the radioactive gas source packaging. Relevant measurement work is performed on the side of the source box body away from the packaging cover, thereby improving the stability and reliability of the radioactive gas source.

[0042] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 is a schematic diagram of a source box body according to an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of an initial source box according to an embodiment of the present invention;

[0046] Figure 3 is a schematic diagram of an intermediate source box according to an embodiment of the present invention;

[0047] Figure 4 is a schematic diagram of a radioactive gas source box assembly according to one embodiment of the present invention;

[0048] Figure 5 The figure is a flow chart of the steps of a filling and shielding method according to an embodiment of the present invention.

[0049] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0050] 100 radioactive gas source box assembly, 110 initial source box, 111 gas chamber, 112 ventilation tube, 113 packaging cover, 120 intermediate source box, 121 protective mold, 1211 mold bottom, 1212 mold cover, 130 isolation barrel, 131 barrel bottom, 132 barrel cover. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] Before further describing the embodiments of the present invention in detail, the directional terms involved in the embodiments of the present invention, such as "upper part", "lower part" and "side part", do not have the meaning of limiting the scope of protection of the present invention.

[0053] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0054] Figure 1 is a schematic diagram of a source box body according to an embodiment of the present invention; Figure 2 Schematic diagram of an initial source box according to an embodiment of the present invention.

[0055] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a radioactive gas source box assembly 100, which includes:

[0056] The source box body includes a gas chamber 111 and a vent pipe 112 communicating with the gas chamber 111;

[0057] The packaging cover 113 is disposed above the gas chamber 111 and is connected to a side of the gas chamber 111 facing the vent pipe 112. The vent pipe 112 is located inside the packaging cover 113.

[0058] The source box body and the packaging cover 113 form an initial source box 110 .

[0059] The radioactive gas source box assembly 100 includes a source box body and a packaging cover 113 covering the source box body. The source box body includes a gas chamber 111 and a vent tube 112 connected to the gas chamber 111. The vent tube 112 evacuates the gas chamber 111 to create a negative pressure in the gas chamber 111. The vent tube 112 is then connected to a buffer tank containing a radioactive gas source. Due to the pressure difference, the radioactive gas source in the buffer tank enters the gas chamber 111 directly through the vent tube 112. The vent tube 112 is then sealed with a sealing clamp and finally cut off at the sealed portion, thereby ensuring the reliability and stability of the radioactive gas source packaging. The packaging cover 113 is then placed on the side of the source box body with the vent tube 112, and the packaging cover 113 and the source box body are sealed and fixedly connected to further ensure the reliability and stability of the radioactive gas source packaging. Relevant measurement work is performed on the side of the source box body facing away from the packaging cover 113, thereby improving the stability and reliability of the radioactive gas source.

[0060] Figure 3 Schematic diagram of an intermediate source box according to an embodiment of the present invention.

[0061] In one possible implementation, Figure 3 As shown, the radioactive gas source box assembly 100 further includes:

[0062] The protective mold 121 includes a mold bottom 1211 and a mold cover 1212. The mold bottom 1211 and the mold cover 1212 form a receiving space. The initial source box 110 is set in the receiving space. The mold bottom 1211 and the mold cover 1212 are detachably connected to form an intermediate source box 120.

[0063] Among them, the protective mold 121 is used to cover the outside of the initial source box 110 to form an intermediate source box 120, which can further prevent the leakage of the radioactive gas source. The protective mold 121 includes a mold bottom 1211 and a mold cover 1212. Through the detachable connection between the mold bottom 1211 and the mold cover 1212, when the initial source box 110 is to be used, the mold bottom 1211 and the mold cover 1212 can be quickly opened to take out the initial source box 110, which is convenient for the direct use of the initial source box 110. In other words, the protective mold can store the initial source box 110.

[0064] In a feasible embodiment, the material of the protection mold 121 is copper;

[0065] The side of the gas chamber 111 facing away from the ventilation pipe 112 is made of titanium alloy.

[0066] Among them, the protective mold 121 is made of copper. Copper has a certain shielding function for the radioactive gas source, can provide effective protection for the initial source box 110, and has a better shielding effect on low-energy radiation (such as beta rays). Copper has natural corrosion resistance, especially in humid or chemical environments, and can protect the radioactive gas source from leakage for a long time. The oxide layer (patina) easily formed on the copper surface can further prevent corrosion. Copper also has good thermal conductivity, which helps to dissipate the heat generated by the decay of the radioactive gas source, avoid local overheating, and improve safety. Copper has low reactivity with most radioactive gas sources (such as radon, xenon, etc.), avoiding chemical reactions with the radioactive gas source after leakage. It can be reused after use, reducing the environmental burden of nuclear waste disposal.

[0067] It should be noted that the vent tube 112 is made of copper. In addition to the advantages mentioned above, copper is easy to process, shape, cut, and seal, making it suitable for manufacturing protective shells with high sealing requirements, namely protective mold 121. The gas chamber 111 is made of stainless steel, which can extend the service life of the gas chamber 111 and maintain the cleanliness of the radioactive gas source. Only the side of the gas chamber 111 facing away from the vent tube 112 is made of titanium alloy. The dense oxide film (TiO2) naturally forms on the surface of titanium alloy, making it suitable for long-term contact with corrosive radioactive gases. Titanium alloy has a strength similar to that of steel, but is 40% to 50% lighter, making it easy to transport and install, and can withstand high pressure or impact, preventing the source box from rupturing in accidents. Titanium alloy is not easily embrittled or degraded by irradiation from radioactive gas sources, making it suitable for long-term storage of high-activity radioactive materials. Highly airtight sealing can be achieved through electron beam welding or laser welding, meeting strict leakage standards for radioactive containers (such as ISO 2919). Furthermore, the titanium alloy has an appropriate thickness to density ratio, and can efficiently penetrate the beta rays released by Kr-85 with a maximum energy of 687.4 keV, while maintaining the mechanical strength of the window layer and working directly through the titanium alloy side.

[0068] Figure 4 FIG. 4 is a schematic diagram of a radioactive gas source box assembly according to an embodiment of the present invention.

[0069] In one possible implementation, Figure 4 As shown, the radioactive gas source box assembly 100 further includes:

[0070] The isolation barrel 130 includes a barrel bottom 131 and a barrel cover 132 . A placement space is formed in the barrel bottom 131 , and the placement space is configured to accommodate multiple intermediate source boxes 120 . The isolation barrel 130 is made of lead.

[0071] During transportation, the intermediate source box 120 must be placed in an isolation barrel 130. Lead has a strong absorption capacity for gamma rays and X-rays, significantly reducing radiation dose and protecting transport personnel and the public. Lead, with its high atomic number, efficiently attenuates high-energy photons through the photoelectric effect, Compton scattering, and electron pair effects. The lead isolation barrel 130 is typically designed as a sealed structure, preventing the leakage of radioactive gases and environmental contamination even if the source box itself is accidentally damaged. Lead's chemical stability makes it less likely to react with radioactive gas sources, ensuring long-term safety.

[0072] Figure 5 The figure is a flow chart of the steps of a filling and shielding method according to an embodiment of the present invention.

[0073] like Figure 5 As shown, another embodiment of the present invention provides a filling and shielding method for a radioactive gas source box assembly, which is used to install the above-mentioned radioactive gas source box assembly. The filling and shielding method includes the following steps:

[0074] Step 1: Place the buffer tank containing the radioactive gas source and the source box body in the glove box;

[0075] Step 2: introducing the radioactive gas source in the buffer tank into the original body;

[0076] Step 3: seal the source box body to complete the filling of the radioactive gas source.

[0077] Specifically, the buffer tank containing the radioactive gas source and the source box body are placed in a glove box. Operating within the glove box can prevent the radioactive gas source from leaking and directly contacting workers, potentially causing harm to them. First, the gas chamber 111 is evacuated via the vent pipe 112, creating a negative pressure chamber. The vent pipe 112 is then connected to the buffer tank via a pipeline, allowing the radioactive gas source to enter the gas chamber 111. At this point, the radioactive gas source is transferred from the buffer tank to the source box body. The negative pressure differential accelerates the flow of the radioactive gas source, improving the gas filling efficiency. No mechanical pump is required to contact the radioactive gas source, thus avoiding contamination or changes in the gas source composition. The initial evacuation removes air (O2, H2O, etc.) from the source box body, preventing the radioactive gas source from reacting. Negative pressure suction reduces the intrusion of external particulate matter, effectively ensuring the purity of the radioactive gas source. This facilitates the subsequent operation of the initial source box 110, eliminates the need for a pressure vessel, and reduces the cost of preparing the source box. After the inflation is completed, in the glove box, the sealing clamp is moved to align the sealing clamp with the vent tube 112 for high-strength extrusion sealing to achieve the sealing of the radioactive gas source. The sealing clamp is then removed and the pneumatic scissors are moved over to cut off the sealed vent tube 112 to ensure that the sealing section and the gas chamber 111 are on the same side to ensure the primary sealing of the radioactive gas source and form the initial source box 110, which is then packaged for subsequent sealing and transportation assurance.

[0078] In a feasible implementation manner, the filling and shielding method further includes:

[0079] The filled source box body is moved to the welding station in the glove box by the first six-axis manipulator;

[0080] The first six-axis manipulator moves the packaging cover and places it on the source box body;

[0081] The packaging cover is pressed onto the source box body by a pressing mechanism above the welding station;

[0082] The welding station welds the packaging cover and the source box body to obtain an initial source box.

[0083] Among them, the clamp stuck at the bottom of the source box body (away from the vent tube side) during gas filling is loosened, and the source box body is adsorbed to the welding station by the first six-axis manipulator and positioned at the welding station. The packaging cover 113 is then sucked by the first six-axis manipulator and moved to the top of the source box body. The cover is connected to the side of the source box body facing the vent tube 112, and the packaging cover 113 is pressed tightly by the pressing mechanism (cylinder) on the welding station. The pressing mechanism of the welding station drives the packaging cover 113 and the source box body to rotate together, and the connection between the source box body and the packaging cover 113 is welded by the welding manipulator to complete the packaging and form the initial source box 110.

[0084] In a feasible embodiment, the radioactive gas source box assembly further includes a protective mold 121, including a mold bottom 1211 and a mold cover 1212, the mold bottom 1211 and the mold cover 1212 forming an accommodation space, the initial source box 110 is disposed in the accommodation space, and the mold bottom 1211 and the mold cover 1212 are detachably connected. The filling and shielding method further includes:

[0085] Place the mold base at the mold base station in the glove box, and move the initial source box into the mold base using the second six-axis manipulator;

[0086] The second six-axis manipulator grabs the mold cover, moves it to the mold bottom station, and presses the mold cover and mold bottom tightly;

[0087] The third six-axis robot absorbs the screws and moves to the mold bottom station, connects the mold cover and the mold bottom with screws, and obtains the intermediate source box.

[0088] Specifically, the initial source box 110 is moved to the mold bottom 1211 of the mold bottom station by the second six-axis manipulator. Then, the mold cover 1212 is adsorbed by the second six-axis manipulator, and the mold cover 1212 is moved to the top of the mold bottom station and covered on the mold bottom 1211, completing the cover connection between the mold cover 1212 and the mold bottom 1211, and then compressed by the clamping mechanism (cylinder) here. The screws are adsorbed by the third six-axis manipulator, and moved to the mold bottom station to start installing the screws, so that the mold bottom 1211 and the mold cover 1212 are fixedly connected, and the intermediate source box 120 is obtained.

[0089] In a feasible embodiment, the radioactive gas source box assembly further includes: an isolation barrel 130, including a barrel bottom 131 and a barrel cover 132, wherein a placement space is formed in the barrel bottom 131, and the placement space is configured to accommodate multiple intermediate source boxes 120; the isolation barrel 130 is made of lead, and the filling and shielding method further includes:

[0090] In the glove box, the intermediate source box is moved to the barrel bottom station based on the third six-axis manipulator, and the intermediate source box is placed in the barrel bottom;

[0091] When the barrel bottom is not fully loaded with the intermediate source box, the third six-axis manipulator works back and forth between the mold bottom station and the barrel bottom station;

[0092] When the bottom of the barrel is filled with the intermediate source box, the third six-axis manipulator grabs the barrel cover, moves it to the top of the barrel bottom, and obtains the radioactive gas source box assembly.

[0093] Specifically, the intermediate source box 120 connected by screws is moved to the barrel bottom 131 (accommodation space) of the isolation barrel 130 by the third six-axis mechanical axis. When the barrel bottom 131 is not full of intermediate source boxes 120, the third six-axis manipulator continues to complete the work of installing screws and transporting the intermediate source box 120 until the barrel bottom 131 is filled with the required number of intermediate source boxes 120. The third six-axis manipulator then absorbs the barrel cover 132, moves the barrel cover 132 to the top of the barrel bottom 131, and completes the crimping connection between the barrel bottom 131 and the barrel cover 132 to form the final radioactive gas source box assembly 100. The connection between the barrel bottom 131 and the barrel cover 132 can be a positioning connection of a block and a buckle, or a raised ring can be provided on the side of the barrel cover 132 facing the barrel bottom 131, and the raised ring matches the placement space of the barrel bottom 131 (clearance fit) to achieve the connection between the barrel bottom and the barrel cover.

[0094] It should be noted that, in this embodiment, three intermediate source boxes 120 are placed in the isolation barrel 130 . The number of intermediate source boxes 120 placed is set according to needs, and the isolation barrel 130 is prepared according to the set requirements.

[0095] The control of each component in this application is performed via a PLC, and the filling and shielding of the radioactive gas source box assembly 100 can be achieved through remote control. The collaborative operation of multiple six-axis manipulators greatly simplifies the process for workers to prepare the radioactive gas source box assembly 100, improving production efficiency and reducing the radiation exposure of workers to the radioactive gas source during the preparation of the radioactive gas source box assembly 100. The entire filling and shielding process is completed within a glove box. Even if a trace leak occurs, the radioactive gas source can be discharged from the process exhaust pipe through the glove box exhaust and centrally processed, reducing radiation exposure to workers and environmental hazards. At the same time, the installation of a lead isolation barrel 130 ensures the storage of the intermediate source box 120 on the one hand, and shields the radioactive gas source on the other hand. The isolation barrel 130 facilitates storage and transfer, reducing the radiation exposure of the radioactive gas source box assembly 100 to transporters during transportation. At present, the Kr-85β radioactive source box is the only device that can accurately measure the surface density of lithium battery negative electrodes. Therefore, the preparation of the Kr-85 source box has high economic value. In addition, the filling and shielding method of the radioactive gas source box assembly 100 can also be applied to the packaging of other radioactive gas source boxes.

[0096] Example

[0097] In this example, helium is used to simulate radioactive gas to conduct preparation and storage tests of the radioactive gas source box assembly 100, and a six-axis manipulator is selected for motion operation, and the movement of the manipulator is completed by PLC.

[0098] The first six-axis manipulator sucks the bottom of the source box (the side facing away from the vent pipe), moves it to the inflation station in the glove box, and clamps the bottom of the box by the cylinder;

[0099] The vacuum system is connected to the source box body, and the vacuum air circuit start-up ball valve automatically opens. After the vacuum system exhausts the air in the gas source box, the vacuum air circuit start-up ball valve closes.

[0100] Control the connection between the buffer tank storing helium and the vent pipe of the source box body, and clamp the two together;

[0101] The diaphragm pressure pump pressurizes the helium and stores it in the buffer gas line. When the pressure reaches 0.5MPa, the pressure pump is shut down.

[0102] Open the solenoid valve at the outlet of the buffer tank to inflate the source box body. When the pressure inside the source box body reaches 0.3MPa, close the solenoid valve to complete the inflation of the source box body.

[0103] After the inflation is completed, the buffer tank gas line and the source box body vent pipe are kept clamped, and the sealing clamp moves to this point to perform high-strength extrusion sealing on the source box body vent pipe. After the extrusion sealing is completed, the sealing clamp returns to its original position;

[0104] The pneumatic scissors move to this position and cut the vent tube (copper) at the extrusion sealing position. After the cutting is completed, the pneumatic scissors return to their original position.

[0105] Loosen the clamping ring that clamps the bottom of the source box body, and use the first six-axis manipulator to move the inflated source box body to the welding station for positioning;

[0106] The first six-axis manipulator then sucks the package cover to the welding station and connects it to the top of the source box body (on the side facing the vent pipe). At the same time, the package cover is pressed tightly by the pressing mechanism (cylinder), and the first six-axis manipulator returns to its original position.

[0107] The pressing mechanism of the welding station rotates the source box body and the packaging cover, and the welding robot welds the chain base of the source box body and the packaging cover to complete the packaging and obtain the initial source box. After the welding is completed, the welding robot returns to its original position and rotates the initial source box back to its original position;

[0108] After the packaging action is completed, the protective mold action begins. The second six-axis robot absorbs the mold bottom to the mold bottom station, and the second six-axis robot absorbs the mold cover to the mold cover station, and then returns to its original position through the second six-axis robot.

[0109] After the welding work and the transfer of the protective mold are completed, the second six-axis manipulator grabs the initial source box, moves it from the welding station to the mold bottom station, places the initial source box in the mold bottom, and the second six-axis manipulator returns to its original position;

[0110] The second six-axis manipulator then absorbs the mold cover, moves from the mold cover station to the mold bottom station, and places the mold cover on the mold bottom to complete the packaging of the initial source box. The mold cover and mold bottom are pressed together by the cylinder at the mold bottom station to obtain the intermediate source box. The second six-axis manipulator returns to its original position to carry out the next cycle of work;

[0111] The third six-axis robot grabs the screws and moves to the mold bottom station to fasten the mold bottom and mold cover with screws. After the screw connection is completed, the third six-axis robot returns to its original position;

[0112] The third six-axis manipulator grabs the intermediate source box and moves it to the isolation barrel station, and places the intermediate source box in the placement space at the bottom of the barrel, and the third six-axis manipulator returns to its original position;

[0113] When the intermediate source box is not filled to the bottom of the barrel, the third six-axis manipulator continues to perform screw installation operations and move the intermediate source box;

[0114] When the intermediate source box is filled to the bottom of the barrel, the third six-axis manipulator grabs the barrel cover and moves it above the barrel bottom to complete the transportation packaging. The third six-axis manipulator returns to its original position and repeats the work of screw installation and transferring the intermediate source box.

[0115] The isolation barrel filled with the intermediate source box is plastic-sealed in the glove box and then taken out.

[0116] It should be noted that the above processes are all carried out in a glove box to avoid leakage of radioactive gas sources affecting nearby workers.

[0117] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0118] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as illustrative only.

[0119] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radioactive gas source box assembly, characterized in that: The radioactive gas source box assembly comprises: The source box body includes a gas chamber and a vent pipe communicating with the gas chamber; a packaging cover, disposed above the gas chamber, and connected to a side of the gas chamber facing the vent pipe, wherein the vent pipe is located inside the packaging cover; The source box body and the packaging cover form an initial source box.

2. The radioactive gas source box assembly according to claim 1, characterized in that: The radioactive gas source box assembly further comprises: The protective mold includes a mold bottom and a mold cover, wherein the mold bottom and the mold cover form a receiving space, and the initial source box is arranged in the receiving space. The mold bottom and the mold cover are detachably connected to form an intermediate source box.

3. The radioactive gas source box assembly according to claim 2, characterized in that: The material of the protective mold is copper; The material of the side of the gas chamber facing away from the ventilation pipe is titanium alloy.

4. The radioactive gas source box assembly according to claim 2, characterized in that: The radioactive gas source box assembly further comprises: The isolation barrel comprises a barrel bottom and a barrel cover. A placement space is formed in the barrel bottom. The placement space is configured to accommodate a plurality of the intermediate source boxes. The isolation barrel is made of lead.

5. A filling and shielding method for a radioactive gas source box assembly, used for installing the radioactive gas source box assembly according to any one of claims 1 to 4, characterized in that: The filling and shielding method comprises the following steps: Place the buffer tank containing the radioactive gas source and the source box body in the glove box; Introducing the radioactive gas source in the buffer tank into the original body; The source box body is sealed to complete the filling of the radioactive gas source.

6. The filling and shielding method of the radioactive gas source cartridge assembly according to claim 5, characterized in that: Introducing the radioactive gas source in the buffer tank into the original body comprises: The gas chamber is evacuated based on the vent pipe, so that the gas chamber forms a negative pressure chamber; The vent pipe is then connected to the buffer tank through a pipeline, and the radioactive gas source enters the gas chamber.

7. The filling and shielding method of the radioactive gas source cartridge assembly according to claim 6, characterized in that: Sealing the source box body includes: A sealing clamp is provided in the glove box, and the vent pipe is squeezed and sealed by the sealing clamp; The glove box is provided with a pneumatic scissors, which cuts off the vent pipe after extrusion and sealing based on the pneumatic scissors; The filling of the radioactive gas source is completed.

8. The filling and shielding method of the radioactive gas source cartridge assembly according to claim 5, characterized in that: The filling and shielding method further comprises: The filled source box body is moved to the welding station in the glove box by a first six-axis manipulator; The first six-axis manipulator moves the packaging cover and places it above the source box body; Pressing the packaging cover onto the source box body by a pressing mechanism above the welding station; The welding station welds the packaging cover and the source box body to obtain an initial source box.

9. The filling and shielding method of the radioactive gas source cartridge assembly according to claim 8, characterized in that: The radioactive gas source box assembly further includes a protective mold, including a mold bottom and a mold cover, wherein the mold bottom and the mold cover form a receiving space, the initial source box is disposed in the receiving space, and the mold bottom and the mold cover are detachably connected. The filling and shielding method further includes: Placing the mold bottom at a mold bottom station in the glove box, and moving the initial source box into the mold bottom using a second six-axis manipulator; The second six-axis manipulator grabs the mold cover, moves it to the mold bottom station, and presses the mold cover and the mold bottom tightly; The third six-axis manipulator absorbs the screws and moves to the mold bottom station, connects the mold cover and the mold bottom by screws, and obtains the intermediate source box.

10. The filling and shielding method of the radioactive gas source cartridge assembly according to claim 9, characterized in that: The radioactive gas source box assembly further includes: an isolation barrel, including a barrel bottom and a barrel cover, wherein a placement space is formed in the barrel bottom, and the placement space is configured to accommodate a plurality of the intermediate source boxes; the isolation barrel is made of lead, and the filling and shielding method further includes: In the glove box, the intermediate source box is moved to the barrel bottom station using the third six-axis manipulator, and the intermediate source box is placed in the barrel bottom; When the barrel bottom is not fully filled with the intermediate source box, the third six-axis manipulator reciprocates between the mold bottom station and the barrel bottom station; When the bottom of the barrel is filled with the intermediate source box, the third six-axis manipulator grabs the barrel cover, moves to the top of the barrel bottom, and obtains the radioactive gas source box assembly.

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