Radioactive substance dissolving system and dissolving 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 dissolving device thereof. The dissolving device comprises a body, a feeding pipeline, a cover body and a body heating assembly. A dissolving tank is formed in the body and used for containing a radioactive plate-shaped sample, and radioactive substances are formed in the radioactive plate-shaped sample; the feeding pipeline is arranged to add feed liquid for dissolving radioactive substances into the dissolving tank; the cover body is used for sealing the dissolving tank; the body heating assembly is arranged on the outer side of the body and used for heating the body. Wherein the body comprises a main body section and a heat dissipation section connected with the main body section, a sealing piece is arranged between the cover body and the heat dissipation section, and the heat dissipation section is arranged to be capable of diffusing heat of the main body section outwards. According to the dissolving device provided by the embodiment of the invention, the temperature of the sealing element can be reduced by utilizing the heat dissipation section, so that the problem that the service life of the sealing element is remarkably shortened due to relatively high temperature of the sealing element when the radioactive plate-shaped sample is dried is avoided.

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 dissolution 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 materials, the radioactive materials can be dissolved by using a dissolving device. The dissolving device generally includes a body forming a dissolving tank and a cover body for closing the dissolving tank, and a sealing member is provided between the body and the cover body to achieve a seal between the two. A radioactive plate sample containing radioactive materials can be placed in the dissolving tank of the dissolving device, and a liquid capable of dissolving radioactive materials can be added to the dissolving tank of the dissolving device to dissolve the radioactive materials.

[0004] The inventor of the present application found that the seal of the dissolution tank is easily damaged after being used for a period of time. The inventor of the present application further found that after the dissolution is completed, when the radioactive plate-like sample in the dissolution tank is dried, the temperature of the seal is high, thereby significantly shortening the service life of the seal. 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 view of the above problems, an embodiment of the present application provides a radioactive material dissolving device, which includes a main body, a feed pipeline, a cover body, and a main body heating component. The main body forms a dissolving tank for accommodating radioactive plate-shaped samples, and the radioactive plate-shaped samples collect radioactive materials; the feed pipeline is configured to add liquid for dissolving radioactive materials into the dissolving tank; the cover body is used to seal the dissolving tank; the main body heating component is disposed on the outside of the main body for heating the main body. Among them, the main body includes a main body section and a heat dissipation section connected to the main body section, a seal is provided between the cover body and the heat dissipation section, and the heat dissipation section is configured to diffuse the heat of the main body section outward.

[0007] The device provided in the embodiment of the present application can utilize the heat dissipation section to reduce the temperature at the seal, thereby avoiding a significant shortening of the service life of the seal due to the high temperature of the seal when drying the radioactive plate sample.

[0008] The embodiment of the present application also provides a radioactive material dissolution system, which includes a dissolution device provided in the embodiment of the present application and a radioactive material dissolution degree determination device. The dissolution device is configured to provide a dissolution space for the radioactive material, and the radioactive material dissolution degree determination device is configured to determine the dissolution degree of the radioactive material in the dissolution device. 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 a radioactive material dissolving device provided in an embodiment of the present application.

[0011] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a radioactive material dissolution device is shown.

[0012] Figure 3 yes Figure 1 A schematic cross-sectional view of the radioactive material dissolution device from another angle is shown.

[0013] Figure 4 yes Figure 1 A side view of a radioactive material dissolution device is shown.

[0014] Figure 5 yes Figure 1 The schematic diagram of the structure of the radioactive material dissolving device after the cover and the main body are separated is shown.

[0015] Figure 6 yes Figure 1 The radioactive material dissolving device shown is a schematic top view with the cover omitted.

[0016] Figure 7 yes Figure 6 Schematic diagram of a top view of the radioactive material dissolution device after omitting the heat dissipation section.

[0017] Figure 8 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.

[0018] Fig. 9 is a schematic exploded view of a radioactivity measurement assembly according to an embodiment of the present application.

[0019] Fig.10 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.

[0020] Fig.11It is a schematic diagram of an exploded view of a radioactivity measurement component according to an embodiment of the present application from another angle.

[0021] Fig.12 It is a schematic structural diagram of an auxiliary container according to an embodiment of the present application.

[0022] Fig.13 is a schematic cross-sectional view of an auxiliary container according to an embodiment of the present application.

[0023] Fig.14 yes Fig.13 A partial enlarged schematic diagram of the rectangular box area in the middle.

[0024] Description of reference numerals:

[0025] 30. Dissolving device; 31. Main body; 311. Dissolving tank; 3111. First zone; 3112. Second zone; 3113. Third zone; 312. Main section; 3121. Connecting and matching part; 3122. First side plate; 31221. First position limiting part; 31222. Second position limiting part; 3123. Second side plate; 313. Heat dissipation section; 3131. Heat dissipation element; 3132. Connecting part; 32. Feeding pipeline; 33. Cover; 331. Cover; 332. Cover heating assembly; 3321. Cover heating element; 3322. Cover heat conducting element; 3323 , cover plate protective shell; 3324, cover plate insulation; 34, body heating assembly; 341, body heating element; 342, body heat conducting element; 343, body insulation element; 344, body protective shell; 35, sealing element; 36, side insulation element; 37, liquid return pipeline; 38, liquid outlet pipeline; 301, air extraction pipeline; 302, air breaking pipeline; 303, mounting element; 304, moving element; 3041, moving part; 305, connecting element; 306, elastic element; 307, moving driving element; 308, base; 3081, moving matching part; 309, bottom insulation element;

[0026] 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;

[0027] 50. Measurement auxiliary part; 51. Auxiliary container; 511. Accommodating chamber; 5111. Bottom wall; 51111. Concave portion; 512. Annular outer shell; 513. Annular inner shell; 514. Cover plate; 515. Bottom plate; 53. Liquid outlet pipe; 531. Liquid inlet; 54. Dissolved liquid inlet pipe; 55. Liquid level measuring part;

[0028] 701. Measuring pipeline; 702. Return pipeline.

[0029] 80. Radioactive plate samples.

[0030] 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

[0031] 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.

[0032] 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.

[0033] See also Figure 1 and Figure 2 , an embodiment of the present application provides a radioactive material dissolving device (hereinafter referred to as the dissolving device) 30, which includes a body 31, a feed pipeline 32, a cover body 33 and a body heating component 34. The body 31 forms a dissolving tank 311 for accommodating a radioactive plate sample 80, and the radioactive plate sample 80 collects radioactive material; the feed pipeline 32 is configured to add a liquid for dissolving the radioactive material into the dissolving tank 311; the cover body 33 is used to seal the dissolving tank 311; the body heating component 34 is disposed on the outside of the body 31 for heating the body 31. Among them, the body 31 includes a main body section 312 and a heat dissipation section 313 connected to the main body section 312, a sealing member 35 is disposed between the cover body 33 and the heat dissipation section 313, and the heat dissipation section 313 is configured to diffuse the heat of the main body section 312 outward.

[0034] In order to reduce radioactive contamination, after the dissolution is completed, the radioactive plate sample 80 needs to be dried in the dissolution tank 311. The inventors of the present application found that when the radioactive plate sample 80 is dried, the service life of the seal 35 is significantly shortened due to the high temperature at which the seal 35 is located. The dissolution device 30 provided in the embodiment of the present application can reduce the temperature at the seal 35 by using the heat dissipation section 313 by configuring the body to include a main section 312 and a heat dissipation section 313 connected to the main section 312, thereby avoiding the service life of the seal 35 being significantly shortened due to the high temperature at which the seal 35 is located when the radioactive plate sample 80 is dried.

[0035] In some embodiments, the liquid added into the dissolving tank 311 by the feed pipeline 32 may be an acidic solution, such as nitric acid and hydrofluoric acid.

[0036] In some embodiments, the body heating component 34 can be used to heat the body 31 when dissolving the radioactive material; the body heating component 34 can also be used to heat the body 31 when drying the radioactive plate sample 80.

[0037] In some embodiments, when dissolving radioactive materials, the main heating component 34 can heat the main body 31 to a dissolving temperature of 80 to 90°C; when heating and drying the radioactive plate sample 80, the main heating component 34 can heat the main body 31 to a drying temperature of 170 to 180°C.

[0038] In some embodiments, the dissolution device 30 may be disposed in a glove box.

[0039] In some embodiments, the seal 35 may be a rubber seal ring. The seal 35 may be disposed at the heat dissipation section 313 .

[0040] See also Figure 1 In some embodiments, the heat dissipation section 313 may form a plurality of heat dissipation elements 3131 to increase the heat dissipation area, which is beneficial to improving the heat dissipation effect. In some embodiments, the heat dissipation elements 3131 may be a plurality of protrusions formed on the side of the heat dissipation section 313.

[0041] See also Figure 2 In some embodiments, the end of the heat dissipation section 313 facing the main section 312 forms a connection portion 3132, and the end of the main section 312 facing the heat dissipation section 313 forms a connection matching portion 3121. The thickness of the connection portion 3132 is less than the thickness of other parts of the heat dissipation section 313, and the thickness of the connection matching portion 3121 is less than the thickness of other parts of the main section 312, so as to reduce the heat conduction between the two, thereby reducing the heat conduction directly to the heat dissipation section 313 on the one hand, and the heat dissipation effect of the heat dissipation section 313 on the other hand, which can significantly reduce the temperature of the sealing member 35.

[0042] In some embodiments, the connecting portion 3132 may include a tapered section that gradually extends toward the direction approaching the main body section 312 and an annular protrusion section connected to the tapered section; the connecting mating portion 3121 may include a tapered section that gradually extends toward the direction approaching the heat dissipation section 313 and an annular groove section connected to the tapered section, and the annular protrusion section of the connecting portion 3132 is embedded in the annular groove section of the connecting mating portion 3121, which is beneficial for reducing the contact area between the two and facilitating a sealed connection between the two.

[0043] See also Figure 1 and Figure 2 In some embodiments, the body heating assembly 34 is configured to be movable relative to the main body section 312, so as to be in a heating position in thermal contact with the main body section 312 or a heat dissipation position separated from the main body section 312. When the body heating assembly 34 is in the heating position in thermal contact with the main body section 312, the portion of the heat dissipation section 313 forming the plurality of heat dissipation elements 3131 is located outside the body heating assembly 34, thereby ensuring that the heat dissipation section 313 can diffuse the heat of the main body section 312 outward.

[0044] After one dissolution process is completed, the temperature of the dissolution tank 311 is relatively high because the main body heating component 34 heats the main body 31 to dry the radioactive plate-shaped sample 80 during the dissolution process. When the next dissolution is performed, the acid solution is introduced into the dissolution tank 311 under negative pressure. Due to the high temperature in the dissolution tank 311, the acid solution vaporizes to form acidic gas. The acidic gas will be sucked away in a negative pressure environment and cannot be recovered.

[0045] In order to shorten the time interval between two dissolution processes and prevent the acidic solution added next time from vaporizing and producing acidic gas at a high temperature, the dissolution device 30 provided in the embodiment of the present application sets the body heating component 34 to be movable relative to the main section 312, so that after the radioactive plate sample 80 is dried, the body heating component 34 can be placed in a heat dissipation position separated from the main section 312, which can significantly accelerate the heat dissipation of the main section 312 and the heat dissipation section 313. After the temperature of the main section 312 and the heat dissipation section 313 is reduced to a suitable temperature, the acidic solution is introduced into the dissolution tank 311 under negative pressure, which can prevent the acidic solution from vaporizing due to the high temperature.

[0046] See also Figure 3 In some embodiments, the main body section 312 includes two first side panels 3122 and two second side panels 3123 that are oppositely disposed. The width of the first side panel 3122 is greater than the length of the second side panel 3123 .

[0047] See also Figure 1 and Figure 2In some embodiments, the number of the main body heating components 34 can be two, and the two main body heating components 34 are respectively arranged facing the two first side plates 3122 to heat the two first side plates 3122. This arrangement can make the heating area and heat dissipation area of ​​the main body section 312 larger, which is conducive to improving the heating efficiency and heat dissipation efficiency.

[0048] See also Figure 5 In some embodiments, the dissolving device 30 further includes two side heat-insulating members 36, which are respectively fixed to the two second side plates 3123 and are used to keep the second side plates 3123 warm. Since the length of the second side plates 3123 is less than that of the first side plates 3122, the side heat-insulating members 36 have little effect on the heat dissipation of the main body section 312.

[0049] See also Figure 2 In some embodiments, the body heating assembly 34 may include a plurality of body heating elements 341, a body heat-conducting element 342, a body heat-insulating element 343, and a body protective shell 344. The plurality of body heating elements 341 are used to provide heat; the plurality of body heating elements 341 are arranged in the body heat-conducting element 342, and the body heat-conducting element 342 is used to be heat-conductingly connected with the two first side plates 3122, and the heat provided by the body heating elements 341 is transferred to the first side plates 3122; the body heat-insulating element 343 is arranged on the outer side of the body heat-conducting element 342 except the surface on one side facing the first side plate 3122, and is used to keep the body heat-conducting element 342 warm; the body protective shell 344 is arranged on the outer side of the body heat-insulating element 343, and is used to protect the body heat-insulating element 343. When the main body heat conducting member 342 is in heat-conducting contact with the first side plate 3122, the main body heat conducting member 342 covers the connecting member 305 of the heat dissipation section 313, and the portion of the heat dissipation section 313 forming a plurality of heat dissipation members 3131 is located outside the main body heat-insulating member 343 and the main body protective shell 344. In such an embodiment, when the main body section 312 is heated, it is beneficial to improve the heating efficiency and the heat-insulating effect; when the main body section 312 is cooled, it is beneficial to achieve rapid heat dissipation of the main body section 312.

[0050] See also Figure 1 and Figure 2 In some embodiments, the dissolving device 30 may further include a mounting member 303, a movable member 304, a connecting member 305 and an elastic member 306. The movable member 304 is used to drive the mounting member 303 to move. The connecting member 305 connects the main body protective shell 344 with the mounting member 303. The elastic member 306 is used to provide a force to the connecting member 305 to move toward the main body heat conductive member 342, so that the main body heat conductive member 342 abuts against the first side plate 3122, thereby improving the heat conduction effect between the main body heat conductive member 342 and the first side plate 3122.

[0051] In some embodiments, the elastic member 306 may be a spring.

[0052] In some embodiments, the elastic member 306 may be sleeved on the connecting member 305 between the main body heat conducting member 342 and the mounting member 303. In some embodiments, the main body heat insulating member 343 and the main body protective shell 344 may form a through hole, and one end of the connecting member 305 passes through the main body heat insulating member 343 and the main body protective shell 344, and is disposed facing the main body heat conducting member 342, so that it can abut against the main body heat conducting member 342 under the action of the elastic member 306.

[0053] See also Figures 1 to 3 In some embodiments, the dissolving device 30 may further include a base 308, the body 31 is fixedly disposed on the base 308, and the movable member 304 is movably disposed on the base 308, thereby driving the mounting member 303 and the body heating component 34 to move relative to the body 31.

[0054] In some embodiments, the surface of the moving member 304 facing the base 308 may form a moving portion 3041, and the surface of the base 308 facing the moving member 304 may form a moving matching portion 3081, and the relative movement between the moving member 304 and the base 308 is achieved through the cooperation between the moving portion 3041 and the moving matching portion 3081. In some embodiments, the moving portion 3041 may be a slide groove, and the moving matching portion 3081 may be a slider.

[0055] In some embodiments, the dissolving device 30 may further include a moving driving member 307, which is connected to the moving member 304 and is used to drive the moving member 304 to move relative to the base 308. In some embodiments, the moving driving member 307 may be a motor.

[0056] See also Figure 3 and Figure 7 In some embodiments, the two first side panels 3122 of the main body section 312 can respectively form two first limiting portions 31221 that are oppositely arranged, and the two first limiting portions 31221 separate the dissolving tank 311 in sequence to form a first area 3111, a second area 3112 and a third area 3113; the first area 3111, the second area 3112 and the third area 3113 are interconnected.

[0057] The second region 3112 is located between the first region 3111 and the third region 3113 .

[0058] The radioactive plate sample 80 is disposed in the second zone 3112 , and the radioactive material is dissolved in the second zone 3112 ; the feed liquid from the feed pipeline 32 enters the first zone 3111 and can flow to the second zone 3112 .

[0059] In some embodiments, there is a gap between two first limiting portions 31221 on the two first side plates 3122 to allow the liquid to flow in. The gap between the two first limiting portions 31221 is smaller than the thickness of the radioactive plate-shaped sample 80 to prevent the radioactive plate-shaped sample 80 from entering the gap.

[0060] In some embodiments, the first limiting portion 31221 may be a protrusion.

[0061] See also Figure 3 and Figure 4 In some embodiments, the dissolving device 30 may further include a liquid return line 37 and a liquid outlet line 38, and the liquid return line 37 and the liquid outlet line 38 are respectively arranged in the third zone 3113 and the first zone 3111. The liquid outlet line 38 can be used to allow the liquid in the dissolving tank 311 to flow out of the dissolving tank 311 (for example, to enter the auxiliary container 51 mentioned below); the liquid return line 37 can be used to allow the liquid flowing out of the dissolving tank 311 (i.e., the liquid in the auxiliary container 51) to flow back to the dissolving tank 311. Since the liquid return line 37 and the liquid outlet line 38 are respectively arranged in the third zone 3113 and the first zone 3111, after the liquid in the dissolving tank 311 flows out and in the process of flowing back again, the flow of the liquid between the three partitions can be accelerated, thereby playing the role of stirring the liquid in the dissolving tank 311, and accelerating the dissolution of the radioactive material.

[0062] In some embodiments, the bottom wall of the dissolution tank 311 can form a slope, and the liquid inlet of the liquid outlet pipe 38 can be located at the lowest point of the slope of the bottom wall of the dissolution tank 311, so that the liquid can converge to the liquid inlet of the liquid outlet pipe 38, which is beneficial for completely extracting the dissolved liquid after the dissolution is completed.

[0063] See also Figure 6 and Figure 7 In some embodiments, the two first side panels 3122 of the main body section 312 can also respectively form second limiting portions 31222 that are relatively arranged. The second limiting portions 31222 are located in the second zone 3112 and are used to limit the movement of the radioactive plate-like sample 80 toward the direction of the first side panel 3122, so that the radioactive plate-like sample 80 can stand upright in the second zone 3112.

[0064] There is a gap between the two opposite second limiting portions 31222 on the two first side plates 3122 , and the gap is greater than the thickness of the radioactive plate-shaped sample 80 .

[0065] In some embodiments, the second limiting portion 31222 can be a protrusion, and the protrusion forms a slope facing the end face of the heat dissipation section 313 to guide the radioactive plate-like sample 80 so that the radioactive plate-like sample 80 can enter between the two relatively arranged second limiting portions 31222.

[0066] See also Figure 5 In some embodiments, the dissolving tank 311 may have an upper opening, and the cover 33 is used to close the upper opening of the dissolving tank 311. The radioactive plate sample 80 can be placed in the second area 3112 from the upper opening. In some embodiments, the cover 33 is connected to a lifting mechanism to achieve the overall lifting movement of the cover 33, thereby closing the upper opening of the dissolving tank 311 or opening the upper opening of the dissolving tank 311.

[0067] See also Figure 1 In some embodiments, the cover body 33 may include a cover plate 331 and a cover plate heating component 332 , and the cover plate heating component 332 is disposed on the cover plate 331 for heating the cover plate 331 .

[0068] The inventors of the present application found that after drying the radioactive plate-like sample 80, condensed water will remain on the inner surface of the cover 331. Even by extending the drying time, it is difficult to completely dry the inside of the cover 331. This will cause radioactive contamination problems. The inventors of the present application further found that this is because when the radioactive plate-like sample 80 is dried, the cover 331 is located in the external environment. Since the cover 331 is usually made of metal material, the material has fast heat conduction, so the temperature of the cover 331 is relatively low, which results in condensed water always remaining on the inner surface of the cover 331 after drying.

[0069] The dissolution device 30 provided in the embodiment of the present application heats the cover plate 331 by arranging a cover plate heating assembly 332 to increase the temperature of the cover plate 331 , thereby avoiding the formation of condensed water residue due to the low temperature of the cover plate 331 when drying the radioactive plate sample 80 .

[0070] When drying the radioactive plate sample 80, the cover plate heating assembly 332 heats the cover plate 331, and the heating temperature is lower than the drying temperature to avoid adverse effects on the seal 35. The heating temperature of the cover plate heating assembly 332 can be, for example, 110-120°C.

[0071] See also Figure 2 and Figure 3 In some embodiments, the cover heating assembly 332 may include a cover heating element 3321, a cover heat conducting element 3322, a cover heat insulating element 3324, and a cover protection shell 3323. The cover heating element 3321 is used to provide heat; the cover heat conducting element 3322 is thermally connected to the cover 331, and is used to conduct the heat provided by the cover heating element 3321 to the cover 331; the cover heat insulating element 3324 is arranged on the outside of the cover heat conducting element 3322, and is used to keep the cover heat conducting element 3322 warm; the cover protection shell 3323 is arranged on the outside of the cover heat insulating element 3324, and is used to protect the cover heat insulating element 3324.

[0072] The cover plate heating element 3321 may be, for example, an electric heating rod. The material of the cover plate heat conductive element 3322 may be, for example, graphite. A plurality of openings may be formed on the cover plate heat conductive element 3322 along the height direction, and a plurality of cover plate heating elements 3321 are respectively embedded in one opening. The cover plate heating assembly 332 may also include: a temperature measuring element, which is arranged in the cover plate heat conductive element 3322 and is used to detect the temperature of the cover plate heat conductive element 3322.

[0073] See also Figure 3 and Figure 4 In some embodiments, the dissolving device 30 may further include an exhaust pipe 301 and a piercing pipe 302, wherein the exhaust pipe 301 and the piercing pipe 302 are in fluid communication with the dissolving tank 311; the gas in the dissolving tank 311 may flow out of the dissolving tank 311 through the exhaust pipe 301, so that a negative pressure environment is formed in the dissolving tank 311; the piercing pipe 302 is also in fluid communication with the glove box, and the gas in the glove box may enter the dissolving tank 311 through the piercing pipe 302, so that the dissolving tank 311 changes from a negative pressure environment to a normal pressure environment. In some embodiments, the exhaust pipe 301 and the piercing pipe 302 may be disposed in the heat dissipation section 313.

[0074] In some embodiments, the dissolving device 30 may further include a bottom insulation member 309 disposed at the bottom of the main body section 312 for insulating the dissolving tank 311 .

[0075] The embodiment of the present application also provides a radioactive material dissolution system, which includes a dissolution device 30 provided in the embodiment of the present application and a radioactive material dissolution degree determination device. The dissolution device 30 is configured to provide a dissolution space for the radioactive material, and the radioactive material dissolution degree determination device (hereinafter referred to as the determination device) is configured to determine the dissolution degree of the radioactive material in the dissolution device 30.

[0076] See also Figure 8 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.

[0077] The inventor of the present application introduced the solution in the dissolving tank 311 into the pipeline and measured the radioactivity of the solution in the pipeline to determine the degree of dissolution of the radioactive material. During the dissolution of the radioactive material in the dissolving device 30, the radioactivity in the solution gradually increases. The solution in the dissolving device 30 can be introduced into the measuring pipeline 701 for measurement at regular intervals, and the radioactivity measurement result will gradually increase; when all the radioactive materials on the radioactive plate sample are transferred to the solution, the radioactivity measurement result reaches a peak value and basically does not change.

[0078] In some embodiments, the measuring line 701 may be in fluid communication with the liquid outlet line 38 of the dissolution device 30 .

[0079] See also Figures 9 to 11 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.

[0080] The shielding shell can shield the influence of radiation from the outside, so that the radiation measured by the radiation measuring element 410 is more accurate.

[0081] 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.

[0082] 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.

[0083] See also Fig.11 In 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.

[0084] 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.

[0085] 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 .

[0086] 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 .

[0087] See also Figures 9 to 11 In some embodiments, the shielding shell includes: a plurality of shielding members connected together by fasteners 433 .

[0088] Specifically, the shielding shell may include a first shielding member 431 and a second shielding member 432 that are arranged opposite to each other.

[0089] 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.

[0090] 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.

[0091] 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 .

[0092] 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.

[0093] 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.

[0094] In some embodiments, see Fig.12 The determining device further includes: a measuring auxiliary component 50 , the measuring auxiliary component 50 includes an auxiliary container 51 and a liquid level measuring component 55 .

[0095] The auxiliary container 51 is in fluid communication with the measuring pipeline 701, and is used to receive the dissolved liquid in the measuring pipeline 701. The measuring auxiliary component 50 may include a dissolved liquid inlet pipe 54, and the dissolved liquid inlet pipe 54 is in fluid communication with the measuring pipeline 701.

[0096] The liquid level measuring device is used to measure the liquid level in the auxiliary container 51. 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 51 reaches a preset value. The auxiliary container 51 can help determine the timing of the radioactivity measuring component 40 to perform the measurement. When the liquid level measuring device measures that the liquid level in the auxiliary container 51 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.

[0097] In some embodiments, the auxiliary container 51 is also provided with an air outlet for connecting to a vacuum pump to form a negative pressure in the auxiliary container 51, 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.

[0098] In some embodiments, the auxiliary container 51 is provided with an air inlet for supplying gas into the auxiliary container 51 so that the auxiliary container 51 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 51 returns to the dissolution device 30 via the measuring pipeline 701 under the action of the pressure difference.

[0099] In some embodiments, the determination device may further include a reflux pipeline 702, which is respectively connected to the liquid outlet pipe 53 of the auxiliary container 51 and the liquid return pipeline 37 of the dissolution device 30. Valves are respectively provided on the reflux pipeline 702 and the measuring pipeline 701. When the dissolved liquid needs to be returned to the dissolution device 30, the dissolved liquid can return to the dissolution device 30 through the reflux pipeline 702.

[0100] In some embodiments, the auxiliary container 51 is configured to form an annular accommodating chamber 511, which is beneficial for avoiding criticality problems.

[0101] See also Fig.13 and Fig.14In some embodiments, the measuring auxiliary component 50 may further include a liquid outlet pipe 53, which is fluidically connected to the reflux line 702 and is used to allow the liquid in the containing chamber 511 to leave the containing chamber 511 and return to the dissolution device 30. The liquid inlet 531 of the liquid outlet pipe 53 is located at the bottom of the annular containing chamber 511.

[0102] In some embodiments, the dissolving device 30 is connected to an external negative pressure providing device, and the liquid in the containing chamber 511 enters the reflux pipeline 702 through the liquid outlet pipe 53 by means of negative pressure suction.

[0103] See also Fig.14 In some embodiments, the liquid outlet pipe 53 abuts against the bottom wall 5111 of the annular accommodating chamber 511, and the liquid inlet 531 is formed by a groove formed by the concave end surface of the liquid outlet pipe 53. In such an embodiment, it is beneficial to extract as much liquid as possible from the accommodating chamber 511.

[0104] In some embodiments, a plurality of grooves may be formed on the end surface of the liquid outlet pipe 53 , that is, a plurality of liquid inlets 531 may be formed, so that the liquid in the accommodating chamber 511 can be completely drawn out of the accommodating chamber 511 as much as possible.

[0105] In some embodiments, the bottom wall 5111 of the annular accommodating chamber 511 is an inclined surface extending downward from the radial outer side to the radial inner side, so that the remaining small amount of liquid in the accommodating chamber 511 flows along the inclined surface to gather at a lower place. In some embodiments, the liquid outlet pipe 53 is disposed adjacent to the radial inner wall of the annular accommodating chamber 511, so that the liquid can enter the liquid outlet pipe 53.

[0106] In some embodiments, the inclined surface may also form a recessed portion 51111, the bottom surface of the recessed portion 51111 is a plane and is connected to the radial inner edge of the bottom wall 5111. In such an embodiment, a small amount of liquid remaining in the accommodating chamber 511 can flow to the lowest point along the inclined surface and then enter the recessed portion 51111. The liquid outlet pipe 53 abuts against the bottom surface so that the liquid entering the recessed portion 51111 can be drawn out by the liquid outlet pipe 53.

[0107] In some embodiments, the auxiliary container 51 may include an annular outer shell 512, an annular inner shell 513, a bottom plate 515, and a cover plate 514. The annular inner shell 513 is disposed radially inward of the annular outer shell 512, and both ends of the annular inner shell 513 and both ends of the annular outer shell 512 are fixedly connected to the bottom plate 515 and the cover plate 514 respectively; the annular outer shell 512, the annular inner shell 513, the bottom plate 515, and the cover plate 514 together form an annular accommodating chamber 511.

[0108] In some embodiments, the liquid outlet pipe 53 , the air outlet pipe, the air inlet pipe, the solution inlet pipe 54 and the liquid level measuring member 55 are all disposed on the cover plate 514 .

[0109] In some embodiments, a portion of the liquid in the dissolution tank 311 can be allowed to enter the auxiliary container 51. When the liquid in the auxiliary container 51 reaches a preset liquid level, the supply of liquid to the auxiliary container 51 is stopped. Thereafter, the liquid entering the auxiliary container 51 is returned to the dissolution tank 311 via the return liquid pipeline 37, thereby stirring the liquid in the dissolution tank 311 and accelerating the dissolution of the radioactive substance.

[0110] In some embodiments, the liquid level measuring member of the determination device may be a liquid level probe, and the determination device may have two liquid level probes, and the two liquid level probes are located at different heights. The low liquid level probe is used to indicate the timing of the radioactivity measurement component 40 starting measurement when measuring the radioactivity of the dissolved liquid in the measurement pipeline 701; the high liquid level probe is used to indicate the timing of the liquid in the dissolving tank 311 stopping entering the auxiliary container 51 when stirring the liquid in the dissolving tank 311.

[0111] In some embodiments, the radioactive material dissolution system can be placed in a glove box.

[0112] 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.

[0113] 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 radioactive material dissolving device, characterized in that: include: A body, the body forming a dissolution tank for accommodating a radioactive plate-shaped sample, wherein the radioactive plate-shaped sample collects radioactive substances; A feed pipeline, configured to add a feed solution for dissolving the radioactive substance into the dissolution tank; A cover body, used for sealing the dissolving tank; A body heating component, disposed outside the body and used for heating the body; The main body comprises a main body section and a heat dissipation section connected to the main body section, a seal is provided between the cover body and the heat dissipation section, and the heat dissipation section is configured to diffuse the heat of the main body section outwards.

2. The device according to claim 1, characterized in that The heat dissipation section forms a plurality of heat dissipation elements to increase the heat dissipation area.

3. The device according to claim 1, characterized in that The end of the heat dissipation section facing the main section forms a connection portion, and the end of the main section facing the heat dissipation section forms a connection matching portion, and the thickness of the connection portion is smaller than the thickness of other parts of the heat dissipation section; The thickness of the connecting and fitting portion is smaller than the thickness of other portions of the main body segment, so as to reduce heat conduction between the two portions.

4. The device according to claim 2, characterized in that The body heating assembly is arranged to be movable relative to the main body section so as to be in a heating position in thermal contact with the main body section or a heat dissipation position separated from the main body section; Wherein, when the main body heating component is in a heating position in thermal contact with the main body section, the portion of the heat dissipation section forming the plurality of heat dissipation elements is located outside the main body heating component.

5. The device according to claim 4, characterized in that The main body section comprises two first side panels arranged opposite to each other and two second side panels arranged opposite to each other, wherein the width of the first side panels is greater than the length of the second side panels; There are two main body heating assemblies, which are respectively arranged facing the two first side plates and used to heat the two first side plates; The device also includes two side insulation components, which are respectively fixedly arranged on the two second side plates and are used to keep the second side plates warm.

6. The device according to claim 2, characterized in that The body heating assembly comprises: A plurality of body heating elements for providing heat; A body heat conducting member, wherein the plurality of body heating members are arranged in the body heat conducting member, and the body heat conducting member is used for heat-conducting connection with the two first side plates to conduct heat provided by the body heating members to the first side plates; A body heat-insulating member, arranged on the outer side of the body heat-conducting member except the surface facing the first side plate, for heat-insulating the body heat-conducting member; The body protection shell is arranged outside the body insulation component and is used to protect the body insulation component; Wherein, when the main body heat conducting member is in thermal contact with the first side plate, the main body heat conducting member covers the connecting member of the heat dissipation section; The heat dissipation section forms a portion of the plurality of heat dissipation elements and is located outside the main body heat-insulating element and the main body protective shell.

7. The device according to claim 6, characterized in that Also includes: A mounting member, a moving member, a connecting member and an elastic member, wherein the moving member is used to drive the mounting member to move, and the connecting member connects the protective shell to the mounting member; The elastic member is used to provide a force for the connecting member to move toward the main body heat conducting member, so that the main body heat conducting member abuts against the first side plate.

8. The device according to claim 5, characterized in that The two first side plates of the main body section respectively form two first limiting parts arranged opposite to each other, and the two first limiting parts sequentially separate the dissolving tank into a first area, a second area and a third area; The radioactive plate-shaped sample is disposed in the second area; The feed liquid from the feed pipeline enters the first zone; The device further comprises a liquid return pipeline and a liquid outlet pipeline, wherein the liquid return pipeline and the liquid outlet pipeline are respectively arranged in the third zone and the first zone.

9. The device according to claim 1, characterized in that The cover body comprises: A cover plate and a cover plate heating component, wherein the cover plate heating component is arranged on the cover plate and is used to heat the cover plate.

10. A radioactive material dissolution system, characterized in that: include: The dissolution device according to any one of claims 1 to 9, configured to provide a dissolution space for the radioactive material; The device for determining the degree of dissolution of a radioactive substance is configured to determine the degree of dissolution of the radioactive substance in the dissolution device.

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