Radioactive substance dissolving system and complexing device thereof

Abstract

The embodiment of the invention relates to the technical field of radioactive substance transfer, in particular to a radioactive substance dissolving system and a complexing device thereof. The device is used for complexing fluorine ions in a dissolving solution in which radioactive substances are dissolved by using an aluminum ion complexing agent, and comprises an annular accommodating part and a neutron absorbing part, wherein the annular accommodating part is arranged to form an annular accommodating cavity for accommodating a dissolving solution and an aluminum ion complexing agent; the neutron absorption part is arranged on the radial inner side of the annular containing part and used for absorbing neutrons. According to the device provided by the embodiment of the invention, the accommodating cavity for accommodating the dissolving solution and the aluminum ion complexing agent is arranged as the annular accommodating cavity, so that the capacity is improved on the premise of avoiding critical problems in the complexing process; the device provided by the embodiment of the invention is provided with the neutron absorber to absorb neutrons, so that the neutrons emitted by the radioactive substance in the annular accommodating cavity can be prevented from entering the annular accommodating cavity after being emitted out of the annular accommodating cavity and being absorbed by the fissile material to cause a critical problem.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of radioactive material transfer, and specifically to a radioactive material dissolution system and a complexing device thereof. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] When transferring radioactive substances, hydrofluoric acid or other liquids can be used to dissolve the radioactive substances to form a solution. Afterwards, the solution containing the radioactive substances needs to be treated to separate the radioactive substances. The device for treating the solution includes a complexing device, which uses an aluminum ion complexing agent to complex the fluoride ions in the solution containing the radioactive substances.

[0004] The inventors of the present application have discovered that when the content of radioactive substances in the dissolving solution is high, criticality problems may occur in the complexing device. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] In order to avoid critical problems in the process of complexing a solution containing radioactive substances when the content of radioactive substances is high, an embodiment of the present application provides a complexing device for complexing fluorine ions in a solution containing radioactive substances using an aluminum ion complexing agent, and the device may include an annular container and a neutron absorber. The annular container is configured to form an annular container cavity for accommodating the solution and the aluminum ion complexing agent; the neutron absorber is arranged on the radial inner side of the annular container for absorbing neutrons.

[0007] The device provided in the embodiment of the present application is beneficial to increasing the capacity while avoiding critical problems in the complexation process by setting the holding chamber for holding the dissolving solution and the aluminum ion complexing agent as an annular holding chamber; at the same time, the device provided in the embodiment of the present application is provided with a neutron absorber to absorb neutrons, which can prevent neutrons emitted by radioactive materials in the annular holding chamber from entering the annular holding chamber again after being ejected from the annular holding chamber and being absorbed by the fissile material to cause critical problems.

[0008] The embodiment of the present application also provides a radioactive material dissolution system, which includes a loading structure, a dissolution device, a sealing hoisting device, a feeding device, a radioactive material dissolution degree determination device, and a complexing device provided in the embodiment of the present application. Among them, the loading structure is used to load a plurality of radioactive plate-shaped samples, and the radioactive plate-shaped samples collect radioactive materials; the dissolution device is configured to provide a dissolution space for the radioactive materials; the sealing hoisting device is configured to hoist the loading structure into the dissolution device and seal the dissolution device; the feeding device is configured to add a feed liquid into the dissolution device, and the feed liquid is used to dissolve the radioactive materials to form a dissolution liquid; the radioactive material dissolution degree determination device is configured to determine the dissolution degree of the radioactive materials in the dissolution device; the complexing device is configured to use an aluminum ion complexing agent to complex the fluoride ions in the dissolution liquid containing the radioactive materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0010] Figure 1 It is a schematic diagram of the structure of the complexing device provided in the embodiment of the present application.

[0011] Figure 2 It is a cross-sectional schematic diagram of the complexing device provided in the embodiment of the present application.

[0012] Figure 3 yes Figure 1 A schematic diagram of the structure of the complexing device after omitting the annular inner shell, the annular outer shell and the neutron absorber.

[0013] Figure 4 yes Figure 3 A partial enlarged view of .

[0014] Figure 5 It is another cross-sectional schematic diagram of the complexing device provided in the embodiment of the present application.

[0015] Figure 6 It is a schematic structural diagram of a sealing lifting device provided according to an embodiment of the present application.

[0016] Figure 7 It is a schematic structural diagram of a cover assembly provided according to an embodiment of the present application.

[0017] Figure 8 yes Figure 6 A schematic structural diagram of the portion of the sealing lifting device that can be separated from the cover assembly as a whole is shown.

[0018] Fig. 9 It is a schematic structural diagram from another angle of a sealing lifting device provided according to an embodiment of the present application.

[0019] Fig.10 It is a schematic structural diagram of a sealing lifting device provided according to another embodiment of the present application.

[0020] Fig.11 It is a cross-sectional schematic diagram of a sealing lifting device provided according to an embodiment of the present application.

[0021] Fig.12 yes Fig.11 A partial enlargement of a cross-sectional view of a seal lifting device is provided.

[0022] Fig.13 It is a structural schematic diagram of a loading structure provided according to an embodiment of the present application.

[0023] Fig.14 It is a cross-sectional schematic diagram of a loading structure provided according to an embodiment of the present application.

[0024] Fig.15 It is a schematic diagram of an exploded view of the plug-in portion of a first rod and a second rod provided according to an embodiment of the present application.

[0025] Fig.16 It is a schematic diagram of the partial structure of the lifting and fitting part of an embodiment of the present application observed from above.

[0026] Fig.17 It is a schematic structural diagram of the lifting and fitting part of an embodiment of the present application observed from below.

[0027] Fig.18 It is a structural schematic diagram of a radioactive material dissolution degree determination device connected to a dissolution device according to an embodiment of the present application.

[0028] Fig.19 is a schematic exploded view of a radioactivity measurement assembly according to an embodiment of the present application.

[0029] Fig. 20 It is a schematic diagram of an exploded view of a radioactivity measurement component according to an embodiment of the present application from another angle.

[0030] Fig.21 It is a schematic diagram of an exploded view of a radioactivity measurement component according to an embodiment of the present application from another angle.

[0031] Description of reference numerals:

[0032] 10. Sealing and hoisting device; 110. Cover assembly; 1100. Cover plate; 111. Cover plate through hole; 112. Recessed portion; 1150. Heating assembly; 1151. Heating element; 1152. Heat conducting element; 11521. Opening; 1153. Insulating element; 1154. Protective shell; 1160. Connecting side plate; 1170. Vertical plate; 120. Hoisting portion; 130. Driving assembly; 131. Rotating shaft; 132. Rotating driving portion; 1321. Switch; 133. Coupling; 134. Lifting driving portion; 1341. Switch; 135. Lead screw; 136. Electrical connector; 1361. Electrical connection interface; 140. Mounting assembly; 141. First mounting plate; 1411. First through hole; 1412, first bottom plate; 1413, first side plate; 1414, first top plate; 1415, first reinforcing plate; 142, sealing assembly; 1421, sleeve; 1422, sealing cover; 14221, sealing cover body; 14222, sealing cap; 1423, first sealing member; 1424, flexible sealing pad; 1425, pressing member; 1426, bolt; 1427, flange; 143, second mounting plate; 1431, slide rail; 144, sliding mounting plate; 1441, stopper; 145, third mounting member; 1451, second bottom plate; 1452, second side plate; 1453, second top plate; 1454, third side plate; 1455, second reinforcing plate; 1456, pressing member;

[0033] 20. Loading structure; 210. Main body; 211. Accommodating cavity; 212. Liquid flow hole; 213. Grid; 2131. First rod; 21311. Plug-in portion; 2132. Second rod; 21321. Plug-in fitting portion; 214. First side plate; 215. Second side plate; 2151. Side opening; 2152. Slot fitting member; 2153. Slot; 216. Side through hole group; 2161. Side through hole; 217. Lifting fitting portion; 2171. Lifting channel; 21711. First guide hole section; 21712. Second guide hole section; 21713. Third guide hole section; 2172. Connecting plate; 220. Stopper; 221. Slot; 222. Disassembly hole;

[0034] 30. dissolving device; 311. dissolving tank;

[0035] 40, radioactive measurement assembly; 410, radioactive measurement member; 411, electric wire; 431, first shielding member; 4311, first plate; 43111, half hole; 4312, first side plate; 4313, bottom plate; 43131, groove; 4314, second side plate; 432, second shielding member; 433, fastener; 434, second plate; 4341, half hole; 4342, groove; 440, through slot; 441, first thermal insulation member;

[0036] 50. Measurement aids;

[0037] 60. complexing device; 61. annular containing member; 611. containing chamber; 6111. bottom wall; 61111. inclined surface; 61112. recessed portion; 612. annular outer shell; 613. annular inner shell; 614. bottom plate; 615. first cover plate; 62. neutron absorber; 621. neutron absorber element; 63. liquid outlet pipe; 631. liquid inlet; 64. bubbling member; 641. annular pipe; 6411. air outlet; 642. air inlet pipe; 65. air outlet pipe; 66. supporting member; 67. solution inlet pipe; 68. aluminum ion complexing agent inlet pipe; 601. second cover plate; 602. liquid level measuring member; 603. pressure measuring member;

[0038] 701. Measuring pipeline; 702. Return pipeline.

[0039] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0041] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0042] The embodiment of the present application provides a complexing device for complexing fluorine ions in a solution containing radioactive substances using an aluminum ion complexing agent. Figure 1 and Figure 2 The complexing device 60 may include an annular container 61 and a neutron absorber 62. The annular container 61 is configured to form an annular accommodating chamber 611 for accommodating the dissolving liquid and the aluminum ion complexing agent; the neutron absorber 62 is arranged on the radial inner side of the annular container 61 for absorbing neutrons.

[0043] When the content of the radioactive substance exceeds the preset value, in order to avoid critical problems, the thickness of the container containing the solution containing the radioactive substance cannot exceed the preset size. The complexing device 60 provided in the embodiment of the present application is provided with an annular containing cavity 611 for containing the dissolving solution and the aluminum ion complexing agent, which is conducive to increasing the capacity under the premise of avoiding critical problems in the complexing process.

[0044] At the same time, the complexing device 60 provided in the embodiment of the present application is provided with a neutron absorber 62 to absorb neutrons, which can prevent the neutrons emitted by the radioactive material in the annular containing cavity 611 from entering the annular containing cavity 611 again after being ejected from the annular containing cavity 611 and being absorbed by the fissile material to cause critical problems.

[0045] In some embodiments, the fluorine ions of the solution come from hydrofluoric acid used to dissolve radioactive substances. In some embodiments, the aluminum ion complexing agent used to complex with the fluorine ions in the solution can be aluminum nitrate, and the fluorine ions in the solution can be complexed with the aluminum ions to form aluminum fluoride. In some embodiments, the material of the neutron absorber 62 can be boron-containing polyethylene.

[0046] In some embodiments, the complexing device 60 may be disposed in a glove box.

[0047] See also Figure 2 and Figure 3 In some embodiments, the complexing device 60 may further include a liquid outlet pipe 63 for allowing the liquid in the receiving chamber 611 to leave the receiving chamber 611, and a liquid inlet 631 of the liquid outlet pipe 63 is located at the bottom of the annular receiving chamber 611. In some embodiments, the liquid outlet pipe 63 is connected to an external negative pressure providing device, and the liquid in the receiving chamber 611 leaves the receiving chamber 611 through the liquid outlet pipe 63 by negative pressure suction.

[0048] See also Figure 4 In some embodiments, the liquid outlet pipe 63 abuts against the bottom wall 6111 of the annular accommodating chamber 611, and the liquid inlet 631 is formed by a groove formed by the concave end surface of the liquid outlet pipe 63. In such an embodiment, it is beneficial to extract as much liquid as possible from the accommodating chamber 611.

[0049] In some embodiments, a plurality of grooves may be formed on the end surface of the liquid outlet pipe 63 , that is, a plurality of liquid inlets 631 may be formed, so that the liquid in the accommodating chamber 611 can be completely drawn out of the accommodating chamber 611 as much as possible.

[0050] See also Figure 3 and Figure 5In some embodiments, the bottom wall 6111 of the annular accommodating chamber 611 may include an inclined surface 61111 extending downward from the radial outer side to the radial inner side, so that the remaining small amount of liquid in the accommodating chamber 611 flows along the inclined surface 61111 to converge to a lower place. In some embodiments, the liquid outlet pipe 63 is disposed adjacent to the radial inner wall of the annular accommodating chamber 611, so that the liquid can enter the liquid outlet pipe 63.

[0051] See also Figure 3 and Figure 4 In some embodiments, the inclined surface 61111 may further form a recessed portion 61112, the bottom surface of the recessed portion 61112 being a plane and being in contact with the radial inner edge of the bottom wall 6111. In such an embodiment, a small amount of liquid remaining in the accommodating chamber 611 can flow to the lowest point along the inclined surface 61111 and then enter the recessed portion 61112. The liquid outlet pipe 63 abuts against the bottom surface so that the liquid entering the recessed portion 61112 can be drawn out by the liquid outlet pipe 63.

[0052] See also Figure 3 In some embodiments, the complexing device 60 may further include a bubbling member 64 and an air outlet pipe 65. The bubbling member 64 is used to provide bubbles into the annular accommodating chamber 611 to accelerate the mixing of the dissolved liquid and the aluminum ion complexing agent; the air outlet pipe 65 is used to allow the gas in the annular accommodating chamber 611 to flow out of the annular accommodating chamber 611. By providing bubbles into the annular accommodating chamber 611 to accelerate the mixing of the dissolved liquid and the aluminum ion complexing agent, it is beneficial to fully complex the fluoride ions.

[0053] The bubbling member 64 may be a bubbler.

[0054] In some embodiments, the bubbling member 64 provides bubbles into the annular containing chamber 611 by means of negative pressure. In some embodiments, the air outlet pipe 65 is also connected to an external negative pressure providing device, and the gas enters the bubbling member 64 by means of negative pressure suction, and the gas in the containing chamber 611 flows out of the annular containing chamber 611 from the air outlet pipe 65. In some embodiments, the air inlet of the air outlet pipe 65 is located above the liquid surface of the liquid in the containing chamber 611. Compared with bubbling with compressed air, the negative pressure environment is more conducive to the escape of bubbles from the liquid and prevents them from being retained in the liquid.

[0055] In some embodiments, the gas outlet pipe 65 can be fluidically connected to an external negative pressure providing device through the exhaust gas absorption device, so that the gas in the annular accommodating cavity 611 is introduced into the exhaust gas absorption device by using negative pressure.

[0056] See also Figure 3In some embodiments, the bubbler 64 may include an annular tube 641 and an air inlet pipe 642. The annular tube 641 is disposed on the bottom wall 6111 of the annular accommodating chamber 611, and the annular tube 641 is provided with a plurality of air outlet holes 6411; the air inlet pipe 642 is in fluid communication with the annular tube 641, and is used to supply gas to the annular tube 641, and the gas can enter the annular accommodating chamber 611 from the plurality of air outlet holes 6411 in the form of bubbles.

[0057] In some embodiments, the air outlet holes 6411 may be evenly distributed along the circumference of the annular tube 641. In some embodiments, the air outlet holes 6411 may be located on a side of the annular tube 641 that is away from the bottom wall 6111.

[0058] In some embodiments, during the complexing process, the gas in the containing chamber 611 is caused to flow out from the air outlet pipe 65 by means of negative pressure suction, so that negative pressure is formed above the liquid surface; due to the pressure difference between the air pressure in the containing chamber 611 and the air pressure in the glove box, the air in the glove box enters the air inlet pipe 642 under the action of the pressure difference, flows to the annular pipe 641 that is fluidly connected to the air inlet pipe 642, and enters the liquid in the containing chamber 611 from the air outlet 6411 in the form of bubbles; the bubbles in the liquid will rise due to the buoyancy of the liquid and leave the liquid. During the rising process of the bubbles, the liquid in the containing chamber 611 can be subjected to a stirring-like operation, thereby accelerating the mixing of the dissolved liquid and the aluminum ion complexing agent, making the complexing more complete.

[0059] See also Figure 3 In some embodiments, the complexing device 60 may further include a plurality of support members 66, which are circumferentially spaced apart on the bottom wall 6111 of the annular accommodating chamber 611, and the annular tube 641 is supported by the plurality of support members 66 so that a gap for solution flow is formed between the annular tube 641 and the bottom wall 6111 of the annular accommodating chamber 611.

[0060] See also Figure 2 In some embodiments, the neutron absorber 62 may include a plurality of neutron absorbers 621 stacked in the height direction, and the contact surface between two adjacent neutron absorbers 621 is a non-planar surface. Setting the contact surface between two adjacent neutron absorbers 621 to be a non-planar surface can prevent neutrons from directly passing through the gap between the two. In some embodiments, between two adjacent neutron absorbers 621, the contact surface of one neutron absorber 621 forms a groove, and the contact surface of the other neutron absorber 621 forms a protrusion.

[0061] See also Figure 1In some embodiments, the complexing device 60 may further include a dissolving solution inlet pipe 67 and an aluminum ion complexing agent inlet pipe 68. The dissolving solution inlet pipe 67 is used to supply the dissolving solution containing the radioactive substance into the containing chamber 611, and the aluminum ion complexing agent inlet pipe 68 is used to supply the aluminum ion complexing agent into the containing chamber 611; the dissolving solution inlet pipe 67 and the aluminum ion complexing agent inlet pipe 68 are both in fluid communication with the containing chamber 611. In some embodiments, the aluminum ion complexing agent and the dissolving solution enter the containing chamber 611 by means of negative pressure.

[0062] See also Figure 1 and Figure 2 In some embodiments, the annular container 61 may include an annular outer shell 612, an annular inner shell 613, a bottom plate 614, and a first cover plate 615. The annular inner shell 613 is disposed radially inward of the annular outer shell 612, and both ends of the annular inner shell 613 and both ends of the annular outer shell 612 are fixedly connected to the bottom plate 614 and the first cover plate 615 respectively; the annular outer shell 612, the annular inner shell 613, the bottom plate 614, and the first cover plate 615 together form an annular container chamber 611.

[0063] In some embodiments, the annular outer shell 612 and the annular inner shell 613 are fixedly connected to the bottom plate 614 by welding, and the annular outer shell 612 and the annular inner shell 613 are also fixedly connected to the first cover plate 615 by welding.

[0064] In some embodiments, the first cover plate 615 may be an annular cover plate, and the liquid outlet pipe 63 , the gas outlet pipe 65 , the gas inlet pipe 642 , the dissolved liquid inlet pipe 67 and the aluminum ion complexing agent inlet pipe 68 are all disposed on the first cover plate 615 .

[0065] In some embodiments, the neutron absorption element 621 is disposed radially inside the annular inner shell 613. In some embodiments, the complexing device 60 may further include a second cover plate 601 for enclosing the neutron absorption element 621 radially inside the annular inner shell 613.

[0066] In some embodiments, the surface of the bottom plate 614 located between the annular outer shell 612 and the annular inner shell 613 forms a bottom wall 6111 of the annular accommodating cavity 611 .

[0067] See also Figure 5 In some embodiments, the complexing device 60 may further include a liquid level measuring member 602 for measuring the liquid level of the liquid in the containing chamber 611. The liquid level measuring member 602 may be a liquid level meter.

[0068] When the liquid level in the accommodating chamber 611 is high, the liquid in the accommodating chamber 611 may flow out of the air outlet pipe 65 under the action of negative pressure suction. When the liquid level in the accommodating chamber 611 measured by the liquid level measuring member 602 is high and is easily sucked to the air outlet pipe 65 by negative pressure suction, the negative pressure suction power of the liquid outlet pipe 63 can be increased to make the liquid in the accommodating chamber 611 flow to the liquid outlet pipe 63 instead of the air outlet pipe 65.

[0069] See also Figure 1 In some embodiments, the complexing device 60 may further include a pressure measuring component 603 for measuring the pressure of the gas in the accommodating chamber 611. The pressure measuring component 603 may be a pressure gauge.

[0070] The embodiment of the present application also provides a radioactive material dissolution system, which may include a loading structure, a dissolution device, a sealing and hoisting device, a feeding device, a radioactive material dissolution degree determination device, and a complexing device 60 provided in the embodiment of the present application. Among them, the loading structure is used to load a plurality of radioactive plate-shaped samples, and the radioactive plate-shaped samples collect radioactive materials; the dissolution device is configured to provide a dissolution space for the radioactive materials; the sealing and hoisting device is configured to hoist the loading structure into the dissolution device and seal the dissolution device; the feeding device is configured to add a feed liquid into the dissolution device, and the feed liquid is used to dissolve the radioactive materials to form a dissolution liquid; the radioactive material dissolution degree determination device is configured to determine the dissolution degree of the radioactive materials in the dissolution device; the complexing device 60 is configured to complex the fluorine ions in the dissolution liquid containing the radioactive materials using an aluminum ion complexing agent.

[0071] In some embodiments, see Figures 6 to 8 The sealing lifting device 10 includes: a cover assembly 110, a lifting part 120, a driving assembly 130 and an installation assembly 140. The cover assembly 110 is used to seal the top opening of the dissolving device; the lifting part 120 is used to lift the loading structure; the driving assembly 130 is used to drive the lifting part 120 to move, so as to connect or disconnect with the loading structure and drive the loading structure to move up and down; the installation assembly 140 is used to detachably install the driving assembly 130 as a whole on the cover assembly 110.

[0072] The sealing lifting device 10 provided in the embodiment of the present application uses the installation component 140 to detachably install the driving component 130 as a whole on the cover component 110. When the driving component 130 fails, the driving component 130 can be removed from the cover component 110 as a whole, which is convenient to operate.

[0073] In some embodiments, the mounting assembly 140 may include a first mounting plate 141 detachably connected to the cover assembly 110 .

[0074] In some embodiments, the cover assembly 110 includes a cover plate 1100 and two connecting side plates 1160 connected to the cover plate 1100, the two connecting side plates 1160 are arranged opposite to each other, and the first mounting plate 141 is detachably connected to the two connecting side plates 1160. Specifically, mounting blocks can be arranged on two opposite surfaces of the two connecting side plates 1160, mounting holes are formed on the mounting blocks, and mounting holes are correspondingly formed on the first mounting plate 141, and the first mounting plate 141 is detachably connected to the two connecting side plates 1160 by fasteners passing through the mounting holes.

[0075] The fasteners may be bolts, for example. When the mounting assembly 140 , the driving assembly 130 and the hanging portion 120 need to be disassembled from the cover assembly 110 as a whole, it is only necessary to remove the bolts to disassemble the whole assembly.

[0076] See also Fig. 9 In some embodiments, the cover assembly 110 may further include two vertical plates 1170 , each vertical plate 1170 being connected to a connecting side plate 1160 , and the vertical plates 1170 are used to cooperate with an external moving mechanism to achieve overall movement of the sealing lifting device 10 .

[0077] The connecting side plate 1160 and the vertical plate 1170 may be an integral piece to increase the overall strength. The connecting side plate 1160 may be welded to the cover plate 1100 .

[0078] In some embodiments, the driving assembly 130 may include: a rotating shaft 131 and a rotating driving part 132, wherein the rotating shaft 131 passes through the cover assembly 110 and is connected to the hanging part 120, and is used to drive the hanging part 120 to rotate, and the rotating driving part 132 is used to drive the rotating shaft 131 to rotate. The rotating driving part 132 is arranged on the first mounting plate 141. The mounting assembly 140 may also include: a sealing assembly 142, and the sealing assembly 142 is used to dynamically seal the rotating shaft 131 with the cover assembly 110. By providing the sealing assembly 142, the dissolving liquid (i.e., the liquid containing the radioactive substance) in the dissolving device can be prevented from diffusing into the glove box.

[0079] In the embodiment of the present application, the hoisting part 120 may have a non-circular structure, such as an elliptical shape, and a hoisting matching part is further provided on the loading structure, and its shape is adapted to the shape of the hoisting part 120. When the rotating driving part 132 drives the rotating shaft 131 to drive the hoisting part 120 to rotate in the hoisting matching part, the hoisting part 120 can be matched or unmatched with the hoisting matching part, so that the hoisting part 120 is connected to or disconnected from the loading structure. The hoisting part 120 can be matched with the hoisting matching part by, for example, a snap-fit ​​match.

[0080] In some embodiments, the rotation driving unit 132 may be a motor.

[0081] See also Figure 6 In some embodiments, the first mounting plate 141 is provided with a first through hole 1411 for the rotation shaft 131 to pass through, see Fig. 9 The cover plate 1100 is provided with a cover plate through hole 111 for the rotation shaft 131 to pass through. Figure 8 The sealing assembly 142 includes a sleeve 1421 and a sealing cover 1422. The sleeve 1421 is arranged on the first mounting plate 141. The rotating shaft 131 passes through the first through hole 1411, the sleeve 1421 and the cover through hole 111 in sequence and extends to the bottom of the cover 1100. The sealing cover 1422 is arranged on the sleeve 1421 for sealing the gap between the sleeve 1421 and the cover through hole 111.

[0082] The size of the hanging part 120 is smaller than the size of the cover plate through hole 111. Since the first mounting plate 141, the sleeve 1421 and the sealing cover 1422 are connected to the first mounting plate 141, when the rotating shaft 131 and the rotating driving part 132 are disassembled from the cover plate 1100, these parts can be disassembled as a whole by separating the first mounting plate 141 from the cover plate 1100, which is convenient for operation in the glove box.

[0083] In such an embodiment, after the first mounting plate 141 is disassembled from the connecting side plate 1160, the first mounting plate 141 is lifted upward, and the sealing assembly 142, the hoisting part 120, the rotating shaft 131, the rotating driving part 132 and the like can be separated from the cover plate 1100 as a whole. During assembly, when the first mounting plate 141 is placed from top to bottom on the two connecting side plates 1160, the hoisting part 120 and the rotating shaft 131 enter the cover plate through hole 111. When the first mounting plate 141 is in contact with the two connecting side plates 1160, the sealing cover 1422 is pressed against the periphery of the cover plate through hole 111 to seal the gap between the sleeve 1421 and the cover plate through hole 111. It can be seen that the embodiment of the present application makes the assembly and disassembly of the sealing hoisting device 10 very convenient by specially designing the sealing assembly.

[0084] In some embodiments, the surface of the cover plate 1100 facing the first mounting plate 141 may be provided with a recessed portion 112, and the sealing assembly 142 further includes a first sealing member 1423 disposed in the recessed portion 112. When the first mounting plate 141 and the cover plate 1100 are detachably connected, the sealing cover 1422 at least partially enters the recessed portion 112 and seals with the first sealing member 1423 to increase the sealing effect. The first sealing member 1423 may be an elastic sealing ring.

[0085] In some embodiments, see Fig.12The sealing cover 1422 may include a sealing cover body 14221 and a sealing cover cap 14222. When the first mounting plate 141 is detachably connected to the two connecting side plates 1160, the bottom of the sealing cover cap 14222 enters the recessed portion 112 to press the first sealing member 1423, and the sealing cover body 14221 is embedded in the cover plate through hole 111. This arrangement can further enhance the sealing effect of the sealing cover 1422 and prevent the dissolved liquid from entering the top of the cover plate 1100.

[0086] In the related art, the dynamic sealing of the rotating shaft 131 is achieved by using a sealing gasket and a rubber ring disposed in the groove of the sealing gasket. In order to dissolve the radioactive material better, the driving assembly 130 can be used to drive the loading structure to move up and down in the dissolution device. The inventor of the present application found that during the rising and falling process of the rotating shaft 131, the rubber ring sometimes breaks away from the groove of the sealing gasket and enters the gap between the rotating shaft 131 and the first through hole 1411, jamming the rotating shaft 131 and preventing the rotating shaft 131 from rotating and rising.

[0087] In order to prevent the rubber ring from coming out of the groove of the sealing gasket and jamming the rotating shaft 131, in some embodiments, see Figure 8 and Fig.12 The sealing assembly 142 further includes a flexible sealing pad 1424 and a pressing member 1425. The flexible sealing pad 1424 is sleeved on the rotating shaft 131. The pressing member 1425 is used to press the flexible sealing pad 1424 and the first mounting plate 141 along the axial direction of the rotating shaft 131, so as to dynamically seal the rotating shaft 131 and the first through hole 1411. Such a sealing method can achieve dynamic sealing of the rotating shaft 131 without causing the rotating shaft 131 to get stuck. In some embodiments, the pressing member 1425 can be, for example, a stainless steel gasket. In some embodiments, the flexible sealing pad 1424 can be a rubber pad.

[0088] In some embodiments, the flexible sealing gasket 1424 may include two flexible semicircular gaskets, which are tightly fitted with the rotating shaft 131, and then the flexible sealing gasket 1424 is fixed to the upper part of the first mounting plate 141 using a clamping member 1425 to facilitate assembly.

[0089] In some embodiments, the sleeve 1421 may be connected to the first mounting plate 141 via a flange 1427 and bolts 1426. The pressing member 1425 may be connected to the first mounting plate 141 via bolts 1426.

[0090] In some embodiments, the mounting assembly 140 may include a second mounting plate 143 and a sliding mounting plate 144, the second mounting plate 143 is connected to the first mounting plate 141, the sliding mounting plate 144 is slidably connected to the second mounting plate 143, and the rotation driving unit 132 is disposed on the sliding mounting plate 144. The driving assembly 130 may also include a lifting driving unit 134 mounted on the second mounting plate 143, for driving the sliding mounting plate 144 to move upward and downward, thereby driving the lifting unit 120 to move upward and downward.

[0091] See also Figure 8 In some embodiments, the mounting assembly 140 may further include a first bottom plate 1412, two first side plates 1413 disposed opposite to each other, and a first top plate 1414, wherein the first side plate 1413 is disposed between the first bottom plate 1412 and the first top plate 1414, the two first side plates 1413 are respectively fixedly connected to the sliding mounting plate 144, the rotation driving portion 132 is disposed on the first top plate 1414, and the driving assembly 130 may further include a coupling 133, through which the rotation shaft 131 is connected to the rotation driving portion 132. The coupling 133 is disposed between the first bottom plate 1412 and the first top plate 1414, and the rotation shaft 131 passes downward through the first bottom plate 1412.

[0092] Through the above arrangement, the lifting drive unit 134 can drive the rotating drive unit 132 and the hoisting unit 120 to move up and down. The second mounting plate 143 can be provided with a slide rail 1431, and the lifting drive unit 134 can drive the sliding mounting plate 144 to move up and down on the slide rail 1431 through the lead screw 135, thereby driving the loading structure to enter or leave the dissolving device.

[0093] In some embodiments, see Figure 6 A plurality of switches 1341 may be further provided on the second mounting plate 143, the switch 1341 including a light emitting portion and a light receiving portion that are relatively arranged, a stopper 1441 is further provided on the sliding mounting plate 144, the switch 1341 including a plurality of light sources and receivers, when the sliding mounting plate 144 is lifted or lowered until the stopper 1441 can be located between the light emitting portion and the light receiving portion of the switch 1341, the switch 1341 sends an electrical signal to indicate that the sliding mounting plate 144 has reached a preset height.

[0094] In some embodiments, the driving assembly 130 may further include a plurality of switches 1321 disposed on the first base plate 1412 for instructing the rotating shaft 131 to rotate to a preset angle.

[0095] In some embodiments, see Fig.11The mounting assembly 140 may further include two symmetrically arranged first reinforcing plates 1415 , wherein the first reinforcing plates 1415 are arranged on a side of the sliding mounting plate 144 facing the second mounting plate 143 to reinforce the sliding mounting plate 144 .

[0096] In some embodiments, see Figure 6 and Fig.10 The mounting assembly 140 also includes two third mounting members 145, which are symmetrically mounted on the first mounting plate 141. The driving assembly 130 also includes multiple power connectors and two electrical connectors 136. Each electrical connector 136 is respectively arranged on a third mounting member 145 for quick-release connection with multiple power connectors and external power cords.

[0097] The electrical connector 136 may be provided with a plurality of electrical connection interfaces 1361, and the external power line is quickly connected to the power connector through the electrical connection interface 1361. Since the electrical connector 136 is quickly connected to the external power line, and the power connector of the electrical device on the cover assembly 110 can be quickly connected to the electrical connector 136, when disassembling the drive assembly 130, the mounting assembly 140, the drive assembly 130 and the electrical connector 136 can be removed as a whole, which is more convenient.

[0098] In the embodiment of the present application, the two third mounting members 145 are symmetrically arranged, so that when the driving assembly 130 rotates or moves up and down, no eccentric movement occurs, thereby not affecting the sealing effect of the cover plate 1100.

[0099] See also Fig.10 In this embodiment, each third mounting member 145 may include a second bottom plate 1451, a second side plate 1452, a second top plate 1453, a third side plate 1454, and two matching plates, wherein the second bottom plate 1451 is fixedly connected to the first mounting plate 141, the two ends of the second side plate 1452 are respectively connected to one end of the second bottom plate 1451 close to the rotation axis 131 and one end of the second top plate 1453 close to the rotation axis 131, and the third side plate 1454 is connected to one end of the second top plate 1453 away from the rotation axis 131. The two matching plates are arranged on both sides of the third side plate 1454, and together with the third side plate 1454, form a slot for the power supply connector 136 to be placed. A tightening member 1456 is also arranged on the matching plate, which is used to tighten the electrical connector 136 to fix the electrical connector 136 on the third mounting member 145.

[0100] In some embodiments, the third mounting member 145 may further include a second reinforcing plate 1455, which is respectively connected to the second bottom plate 1451, the second side plate 1452 and the second top plate 1453, and is perpendicular to the second bottom plate 1451, the second side plate 1452 and the second top plate 1453. Since the electrical connector 136 has a certain deadweight, the second reinforcing plate 1455 may be used to improve the mechanical strength of the entire third mounting member 145.

[0101] After the dissolution is completed, in order to reduce radioactive contamination, the loading structure and the sample loaded therein need to be dried in the dissolution device. In some embodiments, the dissolution device may be provided with a drying component for drying the sample and the loading structure in the dissolution device. The drying component may be dried by electric heating.

[0102] The inventors of the present application found that after drying, condensed water will remain on the inner surface of the cover plate 1100. Even by extending the drying time, it is difficult to completely dry the inside of the cover plate 1100. This will cause radioactive contamination problems. The inventors of the present application further found that this is because when the loading structure and the samples loaded therein are dried, the cover plate 1100 is located in the external environment. Since the cover plate 1100 is usually made of metal material, the material has fast heat conduction, so the temperature of the cover plate 1100 is relatively low, which results in condensed water always remaining on the inner surface of the cover plate 1100 after drying.

[0103] In order to solve the above problems, in some embodiments, the cover assembly 110 may further include a heating assembly 1150 disposed on the cover plate 1100, for heating the cover plate 1100. The embodiment of the present application sets the heating assembly 1150 to heat the cover plate 1100, and increases the temperature of the cover plate 1100, which can avoid the formation of condensed water residue due to the low temperature of the cover plate 1100 when drying the loading structure. In some embodiments, the heating assembly 1150 can be disposed on the cover plate 1100 and located between the two connecting side plates 1160. The first mounting plate 141 can be located above the heating assembly 1150.

[0104] See also Figure 7 , Fig.11 and Fig.12 In some embodiments, the heating assembly 1150 may include: a heating element 1151, a heat conducting element 1152, a heat insulating element 1153 and a protective shell 1154. The heating element 1151 is used to provide heat, the heat conducting element 1152 is thermally connected to the cover plate 1100, and is used to conduct the heat provided by the heating element 1151 to the cover plate 1100, the heat insulating element 1153 is arranged on the outside of the heat conducting element 1152, and is used to keep the heat conducting element 1152 warm, and the protective shell 1154 is arranged on the outside of the heat insulating element 1153, and is used to protect the heat insulating element 1153.

[0105] In such an embodiment, the heating component 1150 can transfer heat to the cover plate 1100 through the heat conducting member 1152, and can reduce heat loss, while the protective shell 1154 can also protect the heating component 1151, the heat conducting member 1152, and the heat insulating member 1153. In addition, the adverse effect of the heat of the heating component 1151 on the sealing component 142 can also be reduced.

[0106] The heating element 1151 may be, for example, an electric heating rod. The material of the heat conducting element 1152 may be, for example, graphite. The heat conducting element 1152 may be formed with an opening 11521, and the heating element 1151 is embedded in the opening 11521. The heating assembly 1150 may further include: a temperature measuring element, which is arranged in the heat conducting element 1152 and is used to detect the temperature of the heat conducting element 1152.

[0107] The power connectors of the heating element 1151 and the temperature measuring element can be quickly connected to the electrical connector 136. When the drive assembly 130 needs to be disassembled, the power connectors of the heating element 1151 and the temperature measuring element are disassembled from the electrical connector 136, which is easy to operate.

[0108] See also Fig.13 and Fig.14 , Fig.13 is a schematic structural diagram of a loading structure according to an embodiment of the present application, Fig.14 It is a cross-sectional schematic diagram of a loading structure according to an embodiment of the present application, the loading structure 20 includes a main body 210 and a stopper 220, the main body 210 is configured to form a accommodating chamber 211 with a side opening 2151, the accommodating chamber 211 is used to place a plurality of radioactive plate-like samples, and the plurality of radioactive plate-like samples are stacked in the accommodating chamber 211 along the height direction of the accommodating chamber 211; the accommodating chamber 211 has a plurality of liquid flow holes 212, so that the feed liquid in the dissolving device can enter the accommodating chamber 211 and flow through the plurality of through holes of the radioactive plate-like samples; the stopper 220 is detachably arranged at the side opening 2151 of the accommodating chamber 211, and is used to prevent the radioactive plate-like samples from moving out of the accommodating chamber 211.

[0109] In the related art, in order to dissolve multiple radioactive plate-like samples at the same time and ensure that the liquid can fully enter the through holes of the radioactive plate-like samples to ensure that the radioactive substances collected by the radioactive plate-like samples can be completely dissolved, the loading structure is usually provided with multiple layers of accommodating chambers, and a radioactive plate-like sample is placed in each layer of accommodating chambers. The inventors of the present application found that due to the limited space of the dissolution device, the height of the loading structure is usually limited. In this way, if the height of each layer of accommodating chambers is set to be only slightly larger than the height of the radioactive plate-like samples, then each time the radioactive plate-like samples are placed, the operation is more difficult; if the height of each layer of accommodating chambers is set to be higher, then the number of accommodating chambers will be reduced, and the number of radioactive plate-like samples processed each time will be reduced.

[0110] The loading structure 20 for radioactive plate-like samples provided in the embodiment of the present application is provided with only one accommodating chamber 211, which facilitates stacking of multiple radioactive plate-like samples in the accommodating chamber 211 along the height direction of the accommodating chamber 211, thereby reducing the difficulty of loading radioactive plate-like samples. In addition, the inventor of the present application has found that multiple radioactive plate-like samples can be stacked in the accommodating chamber 211 along the height direction of the accommodating chamber 211, rather than being placed in a dissolving tank respectively, so that the radioactive substances collected by the radioactive plate-like samples can be completely dissolved. In addition, since there is no need to provide multiple layers of accommodating chambers, the partition between two adjacent layers of accommodating chambers is omitted, which greatly reduces the overall weight of the loading structure 20.

[0111] In some embodiments, the height of the accommodating cavity 211 can be determined according to the height of each radioactive plate-shaped sample and the content of the radioactive material collected therein. The inventors of the present application can determine the mass or content of the radioactive material in the loading structure 20 at the critical state through critical calculation, and can adjust the height of the accommodating cavity 211 according to the mass or content of the radioactive material obtained by calculation to adjust the number of radioactive plate-shaped samples that can be loaded in the accommodating cavity 211, so that the mass or content of the radioactive material in the loading structure 20 does not exceed half of the critical amount.

[0112] See also Fig.13 and Fig.14 In some embodiments, the main body 210 may include two layers of frames 213, two first side plates 214 relatively arranged on both sides of the two layers of frames 213, and two second side plates 215 relatively arranged on the other two sides of the two layers of frames 213, each second side plate 215 connects the two first side plates 214, the two first side plates 214, the two second side plates 215 and the two layers of frames 213 together form a accommodating cavity 211, and the frame 213 forms a plurality of liquid flow holes 212; wherein, a side opening 2151 is formed on a second side plate 215 and is located between the two layers of frames 213; the second side plate 215 forming the side opening 2151 is provided with a slot 2153, and the stopper 220 is detachably inserted into the slot 2153.

[0113] In the embodiment of the present application, the main body 210 is configured to include two layers of frames 213, which not only increases the effective flow area of ​​the liquid flow hole 212, but also helps to reduce the weight of the main body 210; by providing a side opening 2151 on the second side plate 215, it is convenient to place multiple radioactive plate-like samples into the accommodating cavity 211 in sequence; by providing a slot 2153 on the second side plate 215 and providing a stopper 220 so that it can be detachably inserted into the slot 2153, the radioactive plate-like samples can be prevented from being removed from the accommodating cavity.

[0114] In some embodiments, the slot 2153 is formed on the inner side of the second side plate 215. In some embodiments, the second side plate 215 includes a first plate body located above the side opening 2151 and a second plate body located below the side opening 2151. The slot 2153 is formed on the inner side of the first plate body to avoid interference with the radioactive plate-shaped sample. When the stopper 220 is inserted into the slot 2153, the lower end of the stopper 220 is located on the inner side of the second plate body, thereby reducing the shaking of the stopper 220.

[0115] In some embodiments, the main body 210 may further include a slot fitting 2152 disposed on the inner side of the first plate body and forming a slot 2153 together with the first plate body.

[0116] In some embodiments, a disassembly hole 222 may be formed on the stopper 220, and a clearance groove may be formed on the first plate. After the rod is inserted into the disassembly hole 222 through the clearance groove, the rod is moved upward to remove the stopper 220 from the slot 2153. The slot fitting 2152 is recessed at the position facing the disassembly hole 222 to facilitate the rod to pass through the disassembly hole 222.

[0117] See also Fig.13 In some embodiments, the connection portion between the first side plate 214 and the second side plate 215 can be rounded. The gap between the loading structure 20 and the dissolving tank of the dissolving device is small, and the loading structure 20 is not easy to enter and exit, and may get stuck on the tank wall of the dissolving tank. The inventor of the present application found that by setting the corners to be rounded, the loading structure 20 can be easily entered and exited from the dissolving tank.

[0118] In some embodiments, the grid 213 includes a plurality of first rods 2131 and a plurality of second rods 2132, the first rods 2131 and the second rods 2132 are cross-connected, the first rods 2131 connect the two first side plates 214, and the second rods 2132 connect the two second side plates 215. This arrangement is conducive to ensuring the strength of the grid 213 and facilitating the flow of the liquid.

[0119] In some embodiments, a corresponding second rod 2132 of the two-layer grid 213 is located directly below the slot 2153, and the stopper 220 forms a slot 221. When the stopper 220 is detachably inserted into the slot 2153, a corresponding second rod 2132 of the two-layer grid 213 enters the slot 221 to prevent the stopper 220 from shaking and falling off. Through the cooperation of the slot 221 and the second rod 2132, the stopper 220 can enter or leave the slot 2153 more smoothly, and each second rod 2132 can be connected to the second side plate 215, thereby ensuring the mechanical strength of the grid 213.

[0120] See also Fig.15 , Fig.15It is a schematic diagram of the exploded connection part of the first rod 2131 and the second rod 2132 provided according to an embodiment of the present application. In some embodiments, the first rod 2131 forms a plurality of plug-in parts 21311, and the second rod 2132 forms a plurality of plug-in fitting parts 21321. The connection between the first rod 2131 and the second rod 2132 is achieved through the plug-in fitting of the plug-in parts 21311 and the plug-in fitting parts 21321.

[0121] The plug-in portion 21311 may be, for example, a first slot formed above the first rod 2131, and the plug-in mating portion 21321 may be a second slot formed below the second rod 2132, and the first rod 2131 is plugged with the second rod 2132 below the second rod 2132. In some embodiments, the length of the first rod 2131 is smaller than that of the second rod 2132, and the first rod 2131 is disposed below the second rod 2132, which is beneficial to improving the overall strength of the grid 213 structure and is not prone to breakage.

[0122] In some embodiments, the first side plate 214 and the second side plate 215 away from the stopper 220 (i.e., the second side plate 215 without the side opening 2151) are both provided with two side through hole groups 216, and each side through hole group 216 includes a plurality of side through holes 2161 distributed along the height direction. The side through holes 2161 are provided to help reduce the overall weight of the loading structure 20.

[0123] In some embodiments, the number of the side through holes 2161 in each side through hole group 216 is the same as the number of the radioactive plate-like samples, and each side through hole 2161 is located between two layers of the radioactive plate-like samples.

[0124] In order to fully exchange the liquid inside and outside the loading structure 20, the loading structure 20 can be moved up and down in the dissolution tank. By locating each side through hole 2161 between two layers of radioactive plate samples, it is helpful to improve the exchange efficiency of the liquid inside and outside the loading structure 20, so that the radioactive plate samples can be more fully dissolved.

[0125] In some embodiments, a plurality of side through holes 2161 can be directly formed on the side panel. Compared with a side panel with through holes formed by splicing a plurality of plates, a side panel with side through holes directly formed has a higher mechanical strength.

[0126] In some embodiments, the width of the side through holes 2161 can be greater than the spacing between the side through holes 2161. This arrangement can not only reduce the overall weight of the loading structure 20, but also will not have a significant impact on the mechanical strength of the side plate; it can also further improve the exchange efficiency of the slurry inside and outside the loading structure 20.

[0127] In some embodiments, the main body 210 further includes a lifting and fitting portion 217, see Fig.16 and Fig.17 The hoisting matching portion 217 is disposed above the two-layer grid 213 and is used to cooperate with the hoisting portion 120 of the external hoisting mechanism so as to hoist the main body 210 by utilizing the cooperation between the hoisting portion 120 and the hoisting matching portion 217 .

[0128] The lifting matching part 217 may include a lifting channel 2171, wherein the lifting channel 2171 includes a first guide hole section 21711, a second guide hole section 21712 and a third guide hole section 21713 in sequence along its extension direction, the inner wall of the second guide hole section 21712 is parallel to the extension direction of the lifting channel 2171, and the aperture size at the second guide hole section 21712 is the smallest, the first guide hole section 21711 extends obliquely toward the second guide hole section 21712, the third guide hole section 21713 extends obliquely toward the second guide hole section 21712, and the third guide hole section 21713 forms two recessed portions to accommodate the lifting part 120.

[0129] Specifically, the inner wall of the second guide hole segment 21712 can be four right-angled trapezoids that are connected in sequence along the circumferential direction and are symmetrically arranged at two adjacent ones, and the inner wall of the third guide hole segment 21713 can be four triangles that are connected in sequence along the circumferential direction and are symmetrically arranged at two adjacent ones. Through such an arrangement, a recessed portion extending toward the first guide hole segment 21711 can be formed between two opposite right-angled triangles of the third guide hole segment 21713.

[0130] The lifting part 120 can have a non-circular structure, such as an elliptical shape, and the lifting part 120 can enter the lifting channel 2171 from top to bottom, and then rotate the lifting part 120 so that the two ends of the lifting part 120 are stuck in the two recessed parts to achieve stable lifting. The inclined setting of the second guide hole section 21712 and the third guide hole section 21713 is conducive to guiding the lifting part 120 to enter and exit the lifting channel 2171.

[0131] Still see Fig.16 and Fig.17 In some embodiments, the lifting fitting part 217 may further include a plurality of connecting plates 2172, which are respectively used to connect the plate forming the lifting channel 2171 with the first side plate 214 and the second side plate 215. Specifically, the lifting fitting part 217 may include four connecting plates 2172, which are respectively used to connect the two first side plates 214 and the two second side plates 215. Specifically, one connecting plate 2172 may be connected to the slot fitting 2152. The upper surface of the lifting fitting part 217 may be flush with the upper end surfaces of the first side plate 214 and the second side plate 215.

[0132] In some embodiments, the feeding device may include a liquid container and a feeding pipeline, the feeding pipeline is fluidly connected to the dissolution space provided by the dissolution device, and the liquid container can add liquid for dissolving radioactive substances into the dissolution space provided by the dissolution device through the feeding pipeline.

[0133] In some embodiments, the radioactive material dissolution system further includes a tail gas absorption device. The gas outlet pipe 65 can be fluidically connected to the negative pressure providing device through the tail gas absorption device, so that the gas in the annular accommodating chamber 611 is introduced into the tail gas absorption device by using negative pressure.

[0134] See also Fig.18 In some embodiments, the determination device includes: a measuring pipeline 701 and a radioactivity measurement component 40. The measuring pipeline 701 is used to receive the dissolved liquid from the dissolving device 30; the radioactivity measurement component 40 is used to measure the radioactivity of the dissolved liquid in the measuring pipeline 701. The determination device provided in the embodiment of the present application can determine the degree of dissolution of the radioactive substance by measuring the radioactivity of the dissolved liquid.

[0135] The measuring line 701 may be in fluid communication with the dissolution tank 311 of the dissolution device 30 .

[0136] See also Figures 19 to 21 In some embodiments, the radioactivity measurement assembly 40 includes: a radioactivity measurement component 410 and a shielding shell. The radioactivity measurement component 410 is used to measure radioactivity; the shielding shell covers the measuring pipeline 701 and the radioactivity measurement component 410, so that the radioactivity measurement component 410 can only measure the radioactivity of the measuring pipeline 701. The shielding shell can shield the influence of radioactivity from the outside, so that the radioactivity measured by the radioactivity measurement component 410 is more accurate.

[0137] In some embodiments, the radioactivity measurement assembly further includes: a first heat insulating member 441 , which is sleeved on the measurement pipeline 701 to prevent heat from being transferred from the measurement pipeline 701 to the shielding shell.

[0138] The inventor of the present application found that the temperature of the solution in the measuring pipeline 701 is relatively high, and the heat is transferred to the shielding shell through the measuring pipeline 701, and then transferred to the radioactive measuring element 410 through the shielding shell, which will affect the measurement result of the radioactive measuring element 410. The embodiment of the present application can reduce the heat transferred from the measuring pipeline 701 to the shielding shell by providing the first thermal insulation element 441, thereby making the measurement result of the radioactive measuring element 410 more accurate.

[0139] See also Fig.21In some embodiments, a through groove 440 is provided on the side of the first thermal insulation member 441 facing the radioactive measuring member 410, and the radioactive measuring assembly 40 further includes: a second thermal insulation member filled in the through groove 440 and between the first thermal insulation member 441 and the radioactive measuring member 410, wherein the gamma ray absorption rate of the second thermal insulation member is less than the gamma ray absorption rate of the first thermal insulation member 441.

[0140] The inventor of the present application found that although the first thermal insulation member 441 can reduce the influence of temperature on the measurement, the first thermal insulation member 441 will also stop the gamma rays in the measuring pipeline 701, affecting the measurement results. Based on the above reasons, the inventor of the present application set a through groove 440 in the first thermal insulation member, and filled the through groove 440 with a second thermal insulation member with a lower gamma ray absorption rate. In this way, by setting the through groove 440 on the side of the first thermal insulation member 441 facing the radioactive measuring member 410, the first thermal insulation member 441 and the second thermal insulation member jointly insulate, which can achieve a good thermal insulation effect while basically not affecting the absorption rate of gamma rays, thereby improving the measurement accuracy.

[0141] In some embodiments, the material of the first thermal insulation component may be polytetrafluoroethylene, which can not only provide thermal insulation but also facilitate the fixation of the shielding shell and the measuring pipeline 701 .

[0142] In some embodiments, the second thermal insulation member may be a silica aerogel thermal insulation felt. The measuring pipeline 701 is a stainless steel pipeline, and the shielding shell is installed on the measuring pipeline 701 .

[0143] See also Figures 19 to 21 In some embodiments, the shielding shell includes: a plurality of shielding members connected together by fasteners 433 .

[0144] Specifically, the shielding shell may include a first shielding member 431 and a second shielding member 432 that are arranged opposite to each other.

[0145] The first shielding member 431 is formed with a first through hole for allowing the electric wire 411 of the radioactivity measuring member 410 to pass through.

[0146] The first shielding member 431 may include two first side plates 4312 disposed opposite to each other, a second side plate 4314 connecting the two first side plates 4312, a bottom plate 4313 connecting the two first side plates 4312 and the second side plates 4314, and a cover plate of the two first side plates 4312 and the second side plates 4314. The cover plate is provided with a through hole for the cable of the radioactivity measuring member 410 to pass through.

[0147] The first shielding member 431 may include a body and a groove formed on the body, and the first heat insulating member 441 is disposed at the groove. The first heat insulating member 441 is provided with a through hole for arranging the measuring pipeline 701 .

[0148] The cover plate includes a first plate 4311 and a second plate 434. The first plate 4311 is connected to the two first side plates 4312 and the second side plate 4314. The second plate 434 is connected to the two first side plates 4312 by fasteners. The first plate 4311 is provided with a half hole 43111, and the second plate 434 is provided with a half hole 4341, and the two together form a through hole of the cover plate. The second plate 434 is also formed with a groove 4342, and the bottom plate 4313 is formed with a groove 43131 to match with the groove on the body of the second shielding member 432, so as to facilitate the installation of the first heat insulating member 441.

[0149] The first heat insulating member 441 is composed of two halves, one of which is connected to the body of the second shielding member 432 by a fastener; the other half is provided with a through slot 440, which is connected to the second plate 434 and the bottom plate 4313 by a fastener. The body of the second shielding member 432 is also connected to the second plate 434 and the bottom plate 4313 by a fastener 433. This arrangement facilitates the installation of the first heat insulating member 441 and the shielding shell, and facilitates the filling of the second heat insulating member into the shielding shell.

[0150] In some embodiments, see Fig.18 The determining device further comprises: a measuring auxiliary component 50, the measuring auxiliary component 50 comprises an auxiliary container and a liquid level measuring component.

[0151] The auxiliary container is in fluid communication with the measuring pipeline 701, and is used to receive the dissolved liquid in the measuring pipeline 701. The liquid level measuring part is used to measure the liquid level in the auxiliary container, and the radioactivity measuring component 40 measures the radioactivity of the dissolved liquid in the measuring pipeline 701 after the liquid level in the auxiliary container reaches a preset value. The auxiliary container can help determine the timing of the radioactivity measuring component 40 to perform the measurement. When the liquid level measuring part measures that the liquid level in the auxiliary container reaches the preset value, it means that the measuring pipeline 701 is already full of dissolved liquid, and the radioactivity measuring component 40 can be used to measure it, so as to avoid inaccurate measurement results when the measuring pipeline 701 is not yet full.

[0152] In some embodiments, the auxiliary container is also provided with an air outlet for connecting to a vacuum pump to form a negative pressure in the auxiliary container, so that the dissolved liquid in the dissolving device 30 enters the auxiliary container through the measuring pipeline 701 under the action of the negative pressure.

[0153] In some embodiments, the auxiliary container is provided with an air inlet for supplying gas into the auxiliary container so that the auxiliary container changes from a negative pressure environment to a normal pressure environment, so that when a negative pressure is formed in the dissolution tank 311 of the dissolution device 30, the dissolved liquid in the auxiliary container returns to the dissolution device 30 via the measuring pipeline 701 under the action of the pressure difference.

[0154] In some embodiments, the determination device may further include a reflux line 702, which is respectively connected to the auxiliary container and the dissolution tank 311 of the dissolution device 30. Valves are respectively provided on the reflux line 702 and the measuring line 701. When the dissolved liquid needs to be returned to the dissolution device 30, the dissolved liquid can return to the dissolution tank 311 through the reflux line 702.

[0155] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0156] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A complexing device for complexing fluoride ions in a solution containing a radioactive substance using an aluminum ion complexing agent, characterized in that: The device comprises: An annular container, the annular container is configured to form an annular accommodating chamber for accommodating the dissolving solution and the aluminum ion complexing agent; The neutron absorber is arranged on the radial inner side of the annular container and is used for absorbing neutrons.

2. The device according to claim 1, characterized in that Also includes: A liquid outlet pipe, used for allowing the liquid in the containing chamber to leave the containing chamber; The liquid inlet of the liquid outlet pipe is located at the bottom of the annular accommodating chamber.

3. The device according to claim 2, characterized in that The liquid outlet pipe is in contact with the bottom wall of the annular accommodating chamber, and the liquid inlet is formed by a groove formed by the depression of the end surface of the liquid outlet pipe.

4. The device according to claim 3, characterized in that The bottom wall of the annular accommodating cavity includes an inclined surface extending downward from the radial outer side toward the radial inner side; The liquid outlet pipe is arranged adjacent to the radial inner wall of the annular accommodating cavity.

5. The device according to claim 4, characterized in that The inclined surface also forms a recessed portion, the bottom surface of which is a plane and is connected to the radial inner edge of the bottom wall; The liquid outlet pipe is in contact with the bottom surface.

6. The device according to claim 4, characterized in that Also includes: A bubbling member, used for providing bubbles into the annular containing cavity to accelerate the mixing of the dissolving solution and the aluminum ion complexing agent; The gas outlet pipe is used to allow the gas in the annular accommodating cavity to flow out of the annular accommodating cavity.

7. The device according to claim 6, characterized in that The bubbling member comprises: An annular pipe, arranged on the bottom wall of the annular accommodating cavity, and the annular pipe is provided with a plurality of air outlet holes; The air inlet pipe is in fluid communication with the annular pipe member and is used to supply gas to the annular pipe member. The gas enters the annular containing cavity from the multiple air outlet holes in the form of bubbles.

8. The device according to claim 7, characterized in that Also includes: A plurality of support members are arranged at intervals along the circumferential direction on the bottom wall of the annular accommodating chamber, and the annular tube is supported by the plurality of support members so that a gap for solution flow is formed between the annular tube and the bottom wall of the annular accommodating chamber.

9. The device according to claim 1, characterized in that The neutron absorber comprises a plurality of neutron absorbers stacked in a height direction, and a contact surface between two adjacent neutron absorbers is a non-planar surface.

10. A radioactive material dissolution system, characterized in that: include: A loading structure, used for loading a plurality of radioactive plate-shaped samples, wherein the radioactive plate-shaped samples collect the radioactive material; a dissolution device, configured to provide a dissolution space for the radioactive material; A sealing hoisting device, configured to hoist the loading structure into the dissolving device and seal the dissolving device; A feeding device, configured to add a feed liquid into the dissolving device, wherein the feed liquid is used to dissolve the radioactive material to form a dissolving liquid; a radioactive material dissolution degree determining device, configured to determine the dissolution degree of the radioactive material in the dissolution device; The complexing device according to any one of claims 1 to 9 is configured to complex fluoride ions in a solution containing a radioactive substance using an aluminum ion complexing agent.

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