Radioactive powder dissolving device for accurate sampling under pressure environment

Abstract

The embodiment of the present application relates to the technical field of dissolving device, and particularly relates to a radioactive powder dissolving device for precise sampling under pressure environment, which comprises a pouring and distributing system, a dissolving system, a sampling system, a feeding system, a vacuum system, a tail gas treatment system, a filtering system and an ion adsorption system. The sampling system is used for taking out the dissolving solution in the dissolving system, and is arranged to sample the dissolving solution under pressure environment in the dissolving process, and the sampling system is arranged to be self-cleaning to avoid interference of previous sampling on next sampling. The dissolving device in the embodiment of the present application can detect the dissolving condition of the powder without affecting the dissolving process in the dissolving system, and can ensure the accuracy of the result of each sampling and ensure that the result of each sampling can fully reflect the dissolving condition of the powder in the current dissolving system.

Description

Technical Field

[0001] The embodiments of this application relate to the field of dissolution apparatus technology, specifically to a radioactive powder dissolution apparatus for precise sampling under pressure. Background Technology

[0002] The statements herein are provided merely as background information in connection with this application and do not necessarily constitute prior art.

[0003] During the dissolution of radioactive powder, it is necessary to sample the solution in the dissolution system to determine whether the dissolution of the radioactive powder has met the predetermined requirements. However, the sampling process is cumbersome and the sampling results are inaccurate, which can easily affect the correct judgment of the actual situation of the dissolution of radioactive powder. Summary of the Invention

[0004] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0005] Embodiments of this application provide a radioactive powder dissolution device for precise sampling under pressure, comprising: a feeding and distributing system; a dissolution system; the feeding and distributing system is configured to receive powder samples from the outside and add the powder samples to the dissolution system according to a predetermined weight; the dissolution system is configured to dissolve the predetermined weight of powder samples entering its interior; a sampling system is configured to remove the dissolved liquid from the dissolution system; a feeding system is configured to add a material liquid for dissolving powder into the dissolution system; a vacuum system is configured to provide negative pressure when adding material into the dissolution system; a tail gas treatment system is configured to treat the tail gas generated by the dissolution system; a filtration system is configured to input the dissolved liquid generated by the dissolution system into the filtration system to remove undissolved residues in the dissolved liquid; an ion adsorption system is configured to input the filtered dissolved liquid into the ion adsorption system to remove impurities in the dissolved liquid; the sampling system is configured to sample the dissolved liquid under pressure during the dissolution process; and the sampling system is configured to be self-cleaning to avoid interference from previous sampling to subsequent sampling.

[0006] The dissolving apparatus in the embodiments of this application, by setting the sampling system to be able to sample the dissolving liquid under pressure during the dissolving process, can detect the dissolution of the powder without affecting the dissolution process in the dissolving system. Furthermore, by setting the sampling system to be self-cleaning, the accuracy of the sampling results is ensured, and the sampling results can fully reflect the dissolution of the powder in the current dissolving system. Attached Figure Description

[0007] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.

[0008] Figure 1 This is a schematic diagram of a radioactive powder dissolution apparatus for precise sampling under pressure according to an embodiment of this application.

[0009] Figure 2 This is a schematic diagram of the material dispensing and dissolving system and the dissolving system according to an embodiment of this application.

[0010] Figure 3 This is an assembly diagram of the quantitative feeding component, rotary drive unit, linear drive unit, carrier component, and fixing plate of a quantitative feeding component of a material feeding and dispensing system according to an embodiment of this application.

[0011] Figure 4 This is an exploded view of the quantitative feeding component, rotary drive unit, linear drive unit, carrier component, and fixing plate of a quantitative feeding assembly of a material feeding and dispensing system according to an embodiment of this application.

[0012] Figure 5 This is a cross-sectional schematic diagram of the weighing component of the quantitative feeding assembly of a material feeding and dispensing system according to an embodiment of this application.

[0013] Figure 6 This is an assembly diagram of the transfer platform component of the transfer component of the material feeding and distributing system according to an embodiment of this application.

[0014] Figure 7 This is an exploded view of the transfer platform component of the transfer component of a material feeding and distributing system according to an embodiment of this application.

[0015] Figure 8 This is a schematic diagram of the structure of the material pouring component of a material pouring and distributing system according to an embodiment of this application.

[0016] Figure 9 This is a schematic diagram of the structure of a dissolving system according to an embodiment of this application.

[0017] Figure 10This is a schematic diagram of the dissolving system according to an embodiment of the present application from another perspective.

[0018] Figure 11 This is a schematic diagram of the structure of a magnetic drive component of a dissolving system according to an embodiment of this application.

[0019] Figure 12 yes Figure 11 A cross-sectional view of region A in the middle.

[0020] Figure 13 This is a schematic diagram of the structure of a sampling system according to an embodiment of this application.

[0021] Figure 14 yes Figure 13 A magnified view of region B in the middle.

[0022] Figure 15 This is a schematic diagram of the structure of a buffer component of a vacuum system according to an embodiment of this application.

[0023] Figure 16 This is a perspective view of a buffer component of a vacuum system according to an embodiment of this application.

[0024] Figure 17 This is a perspective view of the condensation treatment component of an exhaust gas treatment system according to an embodiment of this application.

[0025] Figure 18 This is a cross-sectional schematic diagram of the condensation treatment component of an exhaust gas treatment system according to an embodiment of this application.

[0026] Figure 19 This is a perspective view of the liquid absorption element of an exhaust gas treatment system according to an embodiment of this application.

[0027] Figure 20 This is a cross-sectional schematic diagram of the liquid absorption element of an exhaust gas treatment system according to an embodiment of this application.

[0028] Figure 21 This is a schematic diagram of the structure of a seasoning container of an ion adsorption system according to an embodiment of this application.

[0029] Figure 22 This is a cross-sectional schematic diagram of the seasoning container of an ion adsorption system according to an embodiment of this application.

[0030] Figure 23 This is an assembly diagram of the adsorption column and manual three-way valve of an ion adsorption system according to an embodiment of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Material feeding and dispensing system; 11. Quantitative feeding assembly; 111. Quantitative feeding component; 1111. Groove; 1112. Main body; 1113. Shaft; 112. Rotary drive unit; 113. Linear drive unit; 114. Bearing component; 1141. Cavity; 1142. Feeding port; 1143. Conical channel; 115. Fixing plate; 116. Weighing component; 1161. Main body; 11611. Chamber; 11612. Receiving port; 11613. Conical structure; 11614. Opening; 1162. Receiving section; 1163. Rotating section; 1164. Weighing sensor; 12. Transfer assembly; 121. Transfer gripper; 122. Transfer platform assembly; 1221. Platform body; 12211. Moving channel; 12212. Temporary storage area; 1222. Opening part; 12221. Suction cup; 12222. Lifting part; 1223. Pushing part; 13. Discharging assembly; 131. Receiving part; 1311. Vibrator; 132. Tilting part; 133. Pipeline; 134. Temporary storage bin;

[0033] 20. Dissolving system; 21. Cover; 211. Rotary quick-release structure; 2111. Hook; 212. Pressure transmitter; 213. Temperature sensor; 214. Liquid inlet; 215. Liquid extraction port; 216. Feed inlet; 217. Air extraction port; 218. Pressure relief port; 22. Body; 221. Cavity; 222. Fitting structure; 2221. Protrusion; 23. Receiving component; 24. Stirring component; 25. Magnetic drive assembly; 251. Drive motor; 252. Coupling; 253. Magnetic coupler; 2531. Inner rotor; 2532. Outer rotor; 254. Support frame; 255. Isolation component;

[0034] 30. Sampling system; 31. Sampling buffer container; 311. Sampling liquid inlet; 312. Sampling liquid outlet; 313. Liquid level detection element; 314. Needle; 315. Negative pressure interface; 316. Cylindrical boss; 317. Vent; 32. Sampling container; 33. Switch valve; 34. Pressure detection element;

[0035] 40. Feeding system;

[0036] 50. Vacuum system; 51. Buffer component; 511. Body; 5111. Receiving cavity; 512. Cover; 5121. Fluid inlet; 5122. Fluid outlet; 5123. Vacuum pump interface; 513. Guide post; 514. Cooling water inlet; 515. Cooling water outlet; 52. Support; 521. Rod-shaped component; 522. Ring-shaped component; 5221. Fixing part; 53. Pressure detection component; 54. Liquid level detection component; 55. Mating component;

[0037] 60. Exhaust gas treatment system; 61. Condensation unit; 611. Cooling water inlet; 612. Cooling water outlet; 613. Gas inlet; 614. Gas outlet; 615. Liquid extraction port; 616. Outer shell; 617. Inner shell; 618. Spacer; 619. Gas guide; 6101. First chamber; 6102. Second chamber; 6103. Liquid extraction unit; 6104. Liquid level gauge; 62. Liquid absorption unit; 621. Gas inlet; 622. Gas outlet; 623. Liquid inlet; 624. Liquid extraction port; 625. Shell; 626. Spacer; 6261. Hole; 627. Gas guide pipe; 628. Liquid guide pipe; 629. Liquid level gauge; 6201. First chamber; 6202. Second chamber; 6203. Pressure monitoring unit;

[0038] 70. Filtration system;

[0039] 80. Ion adsorption system; 81. Seasoning container; 811. Intermediate structure; 812. External structure; 813. Bubbling and stirring structure; 8131. Stirring gas inlet; 8132. Stirring tube; 814. Gas extraction port; 815. Liquid inlet; 816. Liquid extraction structure; 8161. Liquid extraction port; 8162. Liquid extraction tube; 817. Pressure detection device; 818. Liquid level detection device; 82. Adsorption column; 821. Quick connector; 822. Vacuum clamp; 83. Manual three-way valve.

[0040] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0041] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0042] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0043] The inventors of this application have discovered that, since radioactive powder is dissolved in a dissolution system under pressure, when sampling the solution during the dissolution process, it is usually necessary to release the pressure in the dissolution system first. This operation is cumbersome and inefficient. In addition, the solution is prone to remain in the sampling pipeline after the previous sampling and will be mixed into the solution of the next sampling, thus causing problems such as inaccurate sampling results and difficulty in accurately reflecting the actual dissolution status of the powder in the current dissolution system.

[0044] Based on this, embodiments of this application provide a radioactive powder dissolution apparatus for precise sampling under pressure. Please refer to [link to relevant documentation]. Figure 1 , Figure 1 A schematic diagram of a radioactive powder dissolution apparatus for precise sampling under pressure, according to an embodiment of this application, is shown. The apparatus includes: a feeding and distributing system 10, a dissolution system 20, wherein the feeding and distributing system 10 is configured to receive powder samples from the outside and add the powder samples to the dissolution system 20 according to a predetermined weight; the dissolution system 20 is configured to dissolve the predetermined weight of powder samples that have entered it; a sampling system 30, which removes the dissolved liquid from the dissolution system 20; a feeding system 40, which is configured to add a liquid for dissolving powder into the dissolution system 20; a vacuum system 50, which is configured to provide negative pressure when adding material into the dissolution system 20; a tail gas treatment system 60, which is configured to treat the tail gas generated by the dissolution system 20; a filtration system 70, to which the dissolved liquid generated by the dissolution system 20 is input and the filtration system 70 removes undissolved residues from the dissolved liquid; and an ion adsorption system 80, to which the filtered dissolved liquid is input and the ion adsorption system 80 removes impurities from the dissolved liquid. The sampling system 30 is configured to sample the solution under pressure during the dissolution process; and the sampling system 30 is configured to be self-cleaning to avoid interference between the previous sampling and the next sampling.

[0045] The dissolving apparatus provided in the embodiments of this application, by setting the sampling system 30 to be able to sample the dissolving liquid under pressure during the dissolving process, can detect the dissolution of the powder without affecting the dissolution process in the dissolving system 20. Furthermore, by setting the sampling system 30 to be self-cleaning, the accuracy of the sampling results is ensured, and the sampling results can accurately reflect the dissolution of the powder in the current dissolving system 20.

[0046] In some embodiments, the material dispensing and distributing system 10 may include a quantitative feeding component 11, such as... Figure 2 As shown, Figure 2This diagram illustrates the structure of a material dispensing system 10 and a dissolving system 20 according to an embodiment of this application. A quantitative feeding component 11 is configured to add a predetermined weight of radioactive powder into the dissolving system 20, thereby enabling quantitative feeding and weighing of the radioactive powder.

[0047] In some embodiments, the quantitative feeding assembly 11 may include a quantitative feeding element 111, a rotary drive unit 112, and a linear drive unit 113, such as Figure 3 As shown, Figure 3 This diagram illustrates the assembly of a quantitative feeding component 111, a rotary drive unit 112, a linear drive unit 113, a support member 114, and a fixing plate 115 in a quantitative feeding assembly 11 of a material dispensing system 10 according to an embodiment of this application. The quantitative feeding component 111 is provided with multiple grooves 1111 of different quantities. Powder material is added into different grooves 1111 to obtain different predetermined amounts of powder samples. The rotary drive unit 112 is configured to rotate and drive the quantitative feeding component 111, causing it to rotate from a material receiving position to a material dispensing position. At the material receiving position, the quantitative feeding component 111 receives a powder sample in one of the grooves 1111 of different quantities. At the material dispensing position, the quantitative feeding component 111 dispenses the powder sample from its groove 1111. The linear drive unit 113 is configured to drive the quantitative feeding component 111 along a straight line, causing the groove 1111 receiving the powder sample to change position, thereby changing the amount of powder sample received as needed.

[0048] In this embodiment, the quantitative feeding component 111 is driven to rotate and extend by the rotary drive unit 112 and the linear drive unit 113, so that the quantitative feeding component 111 can obtain powder samples of different quantities and dispense the powder samples of different quantities as needed.

[0049] like Figure 3 and Figure 4 As shown, Figure 4This diagram shows an exploded view of the quantitative feeding component 111, rotary drive unit 112, linear drive unit 113, carrier member 114, and fixing plate 115 of the quantitative feeding assembly 11 of the material dispensing system 10 according to an embodiment of this application. The quantitative feeding component 111 can be configured as two integrally formed cylindrical structures with different diameters, wherein the larger diameter cylinder is fitted onto the smaller diameter cylinder. The two cylindrical structures include a main body 1112 and a shaft 1113. The larger diameter cylinder is the main body 1112, and the smaller diameter cylinder is the shaft 1113. The main body 1112 has a plurality of grooves 1111 with different quantitative amounts. The shaft 1113 is fixedly connected to the rotary drive unit 112 so that the rotary drive unit 112 drives the shaft 1113 to rotate, thereby causing the shaft 1113 to drive the main body 1112 to rotate, thereby causing the main body 1112 to change from the material receiving position to the material dispensing position.

[0050] like Figure 3 and Figure 4 As shown, in some embodiments, the quantitative feeding assembly 11 may further include a carrier 114, the carrier 114 having a cavity 1141 and a powder material inlet 1142 formed outside the cavity 1141, a portion of the quantitative feeding component 111 being disposed within the cavity 1141, and the position of the groove 1111 corresponding to the position of the inlet 1142, so that the powder sample fed from the inlet 1142 can enter the groove 1111; and the quantitative feeding component 111 being movable within the cavity 1141, so that grooves 1111 of different quantities can cooperate with the inlet 1142.

[0051] Specifically, the carrier 114 can be configured as a hollow cylindrical structure, with the hollow portion being the cavity 1141. The inner diameter of the cylindrical structure is set to be larger than the outer diameter of the main body 1112 of the metering feeder 111, allowing the metering feeder 111 to rotate and move linearly freely within the cavity 1141. Furthermore, the cylindrical structure has a conical channel 1143 penetrating its wall, allowing the powder sample fed from the inlet 1142 to fall into the groove 1111 via the conical channel 1143.

[0052] The groove 1111 of the quantitative feeding component 111 can be set as a circular groove with different depths but the same diameter. The diameter of the circular groove matches the bottom size of the conical channel 1143 to accommodate different predetermined amounts of powder samples. At the same time, it facilitates the reception of powder samples falling from the feeding port 1142 and avoids the powder samples from spilling out.

[0053] like Figure 3 and Figure 4As shown, in some embodiments, the quantitative feeding assembly 11 further includes a fixing plate 115, which is fixedly connected to the quantitative feeding component 111. A linear drive unit 113 is fixedly connected to the fixing plate 115, and the linear drive unit 113 drives the fixing plate 115 to move. The fixing plate 115 drives the quantitative feeding component 111 to move, so that the groove 1111 of the quantitative feeding component 111 changes position, thereby changing the amount of powder sample received as needed.

[0054] Specifically, the linear drive unit 113 can be arranged parallel to the side of the support member 114, and the fixing plate 115 is arranged vertically at the end of the linear drive unit 113 and the support member 114 away from the rotary drive unit 112, and is fixedly connected to both, so that the linear drive unit 113 can drive the fixing plate 115 to move, and the fixing plate 115 can drive the quantitative feeding member 111 to move in a straight line.

[0055] like Figure 2 As shown, in some embodiments, the quantitative feeding assembly 11 further includes a weighing member 116, which is configured to receive the powder sample from the quantitative feeding member 111 and weigh the powder sample to ensure that the weight of the powder sample meets the requirements and to achieve high-precision feeding.

[0056] In some embodiments, the weighing component 116 includes a body portion 1161, a receiving portion 1162, a rotating portion 1163, and a weighing sensor 1164, such as Figure 5 As shown, Figure 5 This diagram shows a cross-sectional view of the weighing component 116 of the quantitative feeding assembly 11 of a material dispensing system 10 according to an embodiment of this application. The main body 1161 forms a chamber 11611. Two ends of a rotating part 1163 are disposed outside the chamber 11611, and the portion between the two ends of the rotating part 1163 is disposed inside the chamber 11611. The rotating part 1163 is configured to drive its two ends to rotate. A receiving part 1162 is disposed inside the chamber 11611 and is fixedly connected to the rotating part 1163. A receiving port 11612 is formed on the outside of the main body 1161, and the receiving port 11612 is connected to the weighing component 1166 of the rotating part 1163 disposed inside the chamber 11611. The receiving part 1162 inside the chamber 11611 is fitted so that the powder sample enters the receiving part 1162 through the receiving port 11612; the weighing sensor 1164 is disposed between the receiving part 1162 and the rotating part 1163 to weigh the receiving part 1162; the bottom of the chamber 11611 of the main body 1161 has a conical structure 11613 with an opening 11614 so that when the rotating part 1163 rotates, the powder sample falling from the receiving part 1162 flows out from the opening 11614.

[0057] The receiving part 1162 is fixedly connected to the part of the rotating part 1163 located between the two ends of the chamber 11611. The part of the rotating part 1163 fixedly connected to the receiving part 1162 may have a groove. The weighing sensor 1164 is disposed in the groove so that the weighing sensor 1164 is disposed between the receiving part 1162 and the rotating part 1163.

[0058] The rotating part 1163 is configured to drive the receiving part 1162 to rotate 180°, so that the receiving part 1162 flips up and down. Specifically, the powder sample in the groove 1111 of the metering feeder 111 enters the receiving part 1162 through the receiving port 11612. The weighing sensor 1164 weighs the receiving part 1162. After weighing, the rotating part 1163 is driven to rotate and drive the receiving part 1162 to rotate 180°. The powder sample in the receiving part 1162 falls along the conical structure 11613 under the action of gravity and flows out from the opening 11614 and is added to the dissolving system 20.

[0059] like Figure 2 As shown, in some embodiments, the material dispensing system 10 further includes a transfer component 12, which is configured to receive powder samples from the outside and add the powder samples to the dissolving system 20 according to a predetermined weight. In this embodiment, the powder samples are transported by the transfer component 12 and added to the quantitative feeding component 11.

[0060] Specifically, the transfer component 12 receives the powder sample from the outside, transfers the powder sample to the feeding position, and adds the powder sample to the quantitative feeding component 11. After quantitative feeding and weighing by the quantitative feeding component 11, the powder sample is then added to the dissolving system 20.

[0061] In some embodiments, the transfer assembly 12 includes a transfer gripper 121 and a transfer platform assembly 122. The transfer gripper 121 is configured to grip a container holding a powder sample and carry the container along the transfer platform assembly 122 to a predetermined position.

[0062] In some embodiments, the transfer platform component 122 includes a platform body 1221, a cover opening component 1222, and a pushing component 1223, such as Figure 6 and Figure 7 As shown, Figure 6 This diagram shows an assembly schematic of the transfer platform assembly 122 of the transfer component 12 of the material feeding and distributing system 10 according to an embodiment of this application. Figure 7An exploded view of the transfer platform assembly 122 of the transfer component 12 of the material distribution system 10 according to an embodiment of this application is shown. A moving channel 12211 is formed on the platform body 1221. The moving channel 12211 is configured to allow containers to move along the moving channel 12211, and a temporary storage area 12212 is provided in the moving channel 12211. Pushing members 1223 are provided on both sides of the temporary storage area 12212. When the transfer gripper 121 moves the container to the vicinity of the temporary storage area 12212, the pushing members 1223 are configured to push the container into the temporary storage area 12212. A lid opening member 1222 is movably provided on one side of the moving channel 12211. It is configured to move to the temporary storage area 12212 to open the lid of the container in the temporary storage area 12212.

[0063] like Figure 7 As shown, the lid opening component 1222 may include a suction cup 12221 and a lifting part 12222. The suction cup 12221 is used to pick up the lid of the container, and the lifting part 12222 is used to control the lifting of the suction cup 12221, so as to drive the suction cup 12221 and the lid of the container it picks up to rise, thereby completing the lid opening operation.

[0064] Specifically, the transfer gripper 121 grabs the container containing the powder sample and moves it along the moving channel 12211 of the platform body 1221 to the vicinity of the temporary storage area 12212. The container is pushed into the temporary storage area 12212 by the pushers 1223 on both sides of the temporary storage area 12212. The opening device 1222 moves to the temporary storage area 12212 and opens the container.

[0065] like Figure 2 As shown, in some embodiments, the material dispensing system 10 may further include a material dispensing component 13, which is configured to receive a container holding a powder sample and add the powder sample to the quantitative feeding component 11.

[0066] The material pouring assembly 13 may include a receiving component 131, a tilting component 132, a pipeline 133, and a temporary storage bin 134, such as Figure 8 As shown, Figure 8 This diagram illustrates the structure of the pouring component 13 of a pouring and dispensing system 10 according to an embodiment of this application. The receiving component 131 is configured to receive a container holding a powder sample after it has been opened; the flipping component 132 is configured to control the receiving component 131 to flip, causing the powder sample in the container to be poured out; the pipeline 133 is configured with one end connected to the receiving component 131 and the other end connected to a temporary storage hopper 134, allowing the powder sample to flow through the pipeline 133 to the temporary storage hopper 134; the temporary storage hopper 134 is configured with one end connected to the pipeline 133 and the other end connected to the dispensing port 1142 of the quantitative feeding component 11, for temporarily storing the powder sample and providing the powder sample to the quantitative feeding component 11.

[0067] The receiving unit 131 is provided with a vibrator 1311, which is fixedly connected to the side of the receiving unit 131 connected to the pipeline 133, so as to vibrate the container when the powder sample is poured out, to ensure that the powder sample is completely poured out and to avoid it remaining inside the container.

[0068] Specifically, the transfer gripper 121 grabs the container containing the powder sample after it has been opened, places it on the receiving unit 131, and uses the flipping unit 132 to control the receiving unit 131 to flip 180°, so that the powder sample in the container is poured out. At this time, the vibrator 1311 is turned on to vibrate the container. The poured powder sample flows along the pipeline 133 to the temporary storage bin 134 for temporary storage, and then is added to the quantitative feeding component 11 through the feeding port 1142.

[0069] In some embodiments, the dissolving system 20 may include a cover 21 and a body 22, such as Figure 9 and Figure 10 As shown, Figure 9 This diagram illustrates the structure of a dissolving system 20 according to an embodiment of this application. Figure 10 This is a schematic diagram of the dissolving system 20 according to another embodiment of the present application. A cover 21 is disposed on a body 22, which forms a cavity 221. A C-type seal is provided between the cover 21 and the body 22 to seal the dissolving system 20.

[0070] In some embodiments, a quick-release structure 211 is formed on the edge of the cover 21 and a mating structure 222 is formed on the edge of the body 22. The quick-release structure 211 and the mating structure 222 cooperate to form a pre-tightening force on the C-type seal to achieve self-sealing of the dissolving system 20.

[0071] Specifically, such as Figure 10 As shown, the rotary quick-release structure 211 has multiple hooks 2111, and the mating structure 222 has multiple protrusions 2221 that match the hooks 2111 of the rotary quick-release structure 211. By rotating the cover 21, the multiple hooks 2111 of the rotary quick-release structure 211 engage with the multiple protrusions 2221 of the mating structure 222. The multiple hooks 2111 and the multiple protrusions 2221 engage one-to-one, and the multiple protrusions 2221 provide a tightening force to the multiple hooks 2111, thereby creating a pre-tightening force on the C-shaped seal disposed between the cover 21 and the body 22.

[0072] In some embodiments, a pressure transmitter 212 is provided on the cover 21. The pressure transmitter 212 monitors the pressure inside the body 22 to monitor the sealing performance of the dissolving system 20 in real time, so as to ensure that the dissolving system 20 operates stably under a predetermined pressure.

[0073] In some embodiments, a temperature sensing element 213 is provided on the cover 21 to monitor the temperature inside the body 22, ensuring that the melting temperature inside the body 22 remains within a predetermined temperature range. The temperature sensing element 213 and the pressure transmitter 212 are positioned opposite each other on the cover 21 to avoid mutual interference and ensure normal operation of both. For example, the temperature sensing element 213 can be a thermocouple.

[0074] In some embodiments, the dissolving system 20 further includes a heating jacket, which is configured as a cylindrical structure and fitted to the inner side of the body 22 for heating the liquid during the dissolving process. The heating jacket includes a heating rod, a heat transfer layer, and an insulation layer. The heat transfer layer is the innermost layer, and the heating rod is disposed inside the heat transfer layer, transferring heat from the heating rod to the liquid inside the body 22. The insulation layer is the outermost layer, in contact with the inner side of the body 22, for insulating the liquid. For example, the heat transfer layer may be composed of graphite rings and graphite plates to ensure the thermal conductivity of the heat transfer layer, and the insulation layer may be aluminum silicate insulation cotton to ensure its insulation effect.

[0075] like Figure 9 As shown, in some embodiments, the cover 21 is provided with a liquid inlet 214, a liquid extraction port 215, a feed inlet 216, a gas extraction port 217, and a pressure relief port 218. The liquid inlet 214 is connected to the feeding system 40, and the liquid used to dissolve the powder enters the body 22 through the liquid inlet 214; the liquid extraction port 215 is connected to the sampling system 30, and the solution generated after the liquid dissolves the powder is extracted from the body 22 through the liquid extraction port 215; the feed inlet 216 is connected to the dispensing and distributing system 10, and the powder sample enters the body 22 through the feed inlet 216; the gas extraction port 217 is connected to the vacuum system 50, and the gas inside the body 22 is extracted through the gas extraction port 217 to create a high-pressure environment inside the body 22; the pressure relief port 218 is connected to the pressure relief valve to break the high-pressure environment inside the body 22 through the pressure relief port 218.

[0076] like Figure 9 and Figure 10As shown, in some embodiments, the dissolving system 20 further includes a receiving component 23 and a stirring component 24. The receiving component 23 is fixedly connected to the cover 21 and located within the cavity 221 formed by the main body. The stirring component 24 is fixed to the cover 21 and extends into the cavity 221 formed by the main body 22, and is located above the receiving component 23. Powder is fed into the receiving component 23, and the stirring component 24 stirs the powder on the receiving component 23. In this embodiment, by setting the stirring component 24 to stir the powder on the receiving component 23 during the dissolving process, the dissolving effect of the powder is improved and the dissolving rate of the powder is accelerated. At the same time, during the dissolving process, the powder that has dissolved in the liquid, i.e., the solution, can pass freely through the receiving component 23, while the undissolved powder cannot pass through the receiving component 23. Therefore, it is convenient to recover the undissolved powder and avoid it affecting the quality of the solution.

[0077] The receiving component 23 may include a filter screen and a filter screen frame. The filter screen frame is columnar and has hooks on its sides, which can be quickly attached to the cover 21 for easy disassembly and installation. The filter screen is fitted onto the filter screen frame, and different pore sizes can be selected according to experimental needs. The liquid inlet 214 and the liquid outlet 215 are located within the receiving component 23 so that powder and liquid can fall directly into the receiving component 23.

[0078] like Figure 9 and Figure 10 As shown, in some embodiments, the dissolving system 20 further includes a magnetic drive assembly 25. A portion of the magnetic drive assembly 25 is disposed outside the cover 21, and another portion is disposed inside the cover 21. The portion of the magnetic drive assembly 25 disposed outside the cover 21 drives the portion disposed inside the cover 21, and the portion disposed inside the cover 21 drives the stirring element 24 to move. This embodiment, by providing the magnetic drive assembly 25 on the cover 21, uses magnetic torque transmission to drive the stirring element 24, eliminating the need for an opening in the cover 21. This avoids driving the stirring element 24 under pressure, ensuring the sealing of the cover 21.

[0079] In some embodiments, the magnetic drive assembly 25 includes a drive motor 251, a coupling 252, and a magnetic coupler 253, such as Figure 11 As shown, Figure 11 This diagram illustrates the structure of the magnetic drive assembly 25 of a dissolution system 20 according to an embodiment of this application. The magnetic coupler 253 includes an inner rotor 2531 and an outer rotor 2532, as shown below. Figure 12 As shown, Figure 12 Show Figure 11A cross-sectional view of region A. The drive motor 251 is connected to the outer rotor 2532 of the magnetic coupler 253 via the coupling 252. The drive motor 251 drives the outer rotor 2532 to move. The drive motor 251, coupling 252, and outer rotor 2532 are located outside the cover 21, while the inner rotor 2531 is located inside the cover 21. The outer rotor 2532 drives the inner rotor 2531 to move, and the inner rotor 2531 drives the stirring element 24 to move. This achieves the driving of the stirring element 24 to move by magnetically transmitting torque.

[0080] like Figure 11 As shown, in some embodiments, the magnetic drive assembly 25 further includes a support frame 254, a drive motor 251 and a coupling 252 are disposed above the support frame 254 and fixedly connected to the support frame 254, and an outer rotor 2532 is disposed below the support frame 254. The support frame 254 is fixedly connected to the cover 21 so as to fix the magnetic drive assembly 25 to the cover 21 through the support frame 254, and at the same time provide support for the magnetic drive assembly 25.

[0081] like Figure 12 As shown, in some embodiments, the magnetic drive assembly 25 further includes an isolator 255 disposed between the cover 21 and the outer rotor 2532 to isolate the cavity 221 formed by the body 22 from the outside, thereby further ensuring a seal.

[0082] In some embodiments, the sampling system 30 includes a sampling buffer container 31 and a sampling container 32, such as Figure 13 and Figure 14 As shown, Figure 13 This diagram illustrates the structure of a sampling system 30 according to an embodiment of this application. Figure 14 Show Figure 13 Enlarged view of region B. The sampling buffer container 31 is in fluid communication with the dissolving system 20; a switching valve 33 is provided between the sampling buffer container 31 and the dissolving system 20, which can control whether the sampling buffer container 31 and the dissolving system 20 are in fluid communication or not; the sampling container 32 is in fluid communication with the sampling buffer container 31. In this embodiment, by setting up the sampling buffer container 31, the high-pressure dissolving liquid flowing out of the closed and high-pressure dissolving system 20 first flows into the sampling buffer container 31 for temporary storage, preventing the dissolving liquid from directly entering the sampling container 32.

[0083] In some embodiments, the sampling buffer container 31 and the dissolving system 20 are configured such that the liquid level of the sampling buffer container 31 is higher than that of the dissolving system 20, so that after sampling is completed, the dissolving liquid in the sampling buffer container 31 can automatically flow back into the dissolving system 20 under the action of gravity, thereby avoiding the dissolving liquid remaining in the sampling buffer container 31 and affecting the sampling results of the next time.

[0084] In some embodiments, the sampling buffer container 31 is provided with a sampling liquid inlet 311 and a sampling liquid outlet 312 at its bottom. The sampling liquid outlet 312 is in fluid communication with the sampling container 32, so that liquid in the sampling buffer container 31 flows into the sampling container 32; the sampling liquid inlet 311 is in fluid communication with the dissolution system 20, and liquid from the dissolution system 20 flows into the sampling buffer container 31 from the sampling liquid inlet 311. The sampling liquid inlet 311 is configured such that its guiding direction is perpendicular to the flow direction of the liquid, such as... Figure 14 As shown, this is to reduce the pressure and flow rate of the liquid and prevent the liquid from impacting the top of the sampling buffer container 31 after entering the container.

[0085] The sampling buffer container 31 has a cavity, and a cylindrical protrusion 316 is provided at the bottom of the cavity, such as... Figure 14 As shown, the sampling liquid inlet 311 is provided on the side wall of the cylindrical boss 316, and multiple sampling liquid inlets 311 can be provided along the circumferential direction of the cylindrical boss 316 to divert the liquid when it enters the sampling buffer container 31, so as to further reduce the pressure and flow rate of the liquid.

[0086] In some embodiments, the sampling buffer container 31 is further provided with a liquid level detection element 313, which is disposed above the sampling liquid inlet 311. A baffle is provided above the sampling liquid inlet 311 to protect the liquid level detection element 313 and prevent splashing of high-pressure liquid from causing accidental contact with the liquid level detection element 313, thereby causing detection errors.

[0087] The liquid level detection element 313 is configured to control the volume of liquid flowing into the sampling buffer container 31 by sensing the liquid level height inside the container. For example, the liquid level detection element 313 can be a liquid level conductivity switch. One part of the liquid level detection element 313 is disposed inside the cavity of the sampling buffer container 31, and the other part is disposed outside the cavity. The part disposed inside the cavity senses the liquid level height inside the sampling buffer container 31. When the liquid rises to a predetermined level, the opening and closing state of the part disposed outside the cavity changes, so that liquid no longer flows into the sampling buffer container 31.

[0088] like Figure 13 As shown, in some embodiments, a needle 314 is connected to the lower end of the sampling buffer container 31. The needle 314 can pierce the end of the sampling container 32 during sampling so that the sampling liquid does not come into contact with the outside world during the sampling process, thereby achieving closed sampling and ensuring the accuracy of the test results.

[0089] The needle 314 can be configured to be connected to the sampling liquid outlet 312 of the sampling buffer container 31 so that the liquid in the sampling buffer container 31 can flow directly into the sampling container 32 through the sampling liquid outlet 312 via the needle 314.

[0090] In some embodiments, the sampling system 30 further includes a pressure detection element 34, which is configured to be connected to the sampling buffer container 31 and to detect the pressure inside the sampling buffer container 31 to ensure that the pressure inside the sampling buffer container 31 meets the requirements. The pressure detection range of the pressure detection element 34 is -0.1 MPa to 0.15 MPa.

[0091] In some embodiments, the sampling buffer container 31 is further provided with a negative pressure interface 315, which draws negative pressure into the sampling buffer container 31 so that after sampling is completed, the needle 314, the sampling liquid outlet 312 and the liquid remaining in the pipeline can be returned to the sampling buffer container 31, thereby avoiding interference with the next sampling.

[0092] Specifically, after sampling is completed, the inside of the sampling buffer container 31 is drawn to a slightly negative pressure state through the negative pressure interface 315, and the valve that controls the connection between the sampling liquid outlet 312 and the sampling container 32 is quickly opened and then closed, so that the needle 314, the sampling liquid outlet 312 and the liquid remaining in the pipeline are returned to the sampling buffer container 31 under the action of air pressure.

[0093] In some embodiments, the sampling buffer container 31 is further provided with a vent 317 to release the internal pressure of the sampling buffer container 31, so that its interior is at atmospheric pressure. After the high-pressure liquid in the dissolution system 20 flows into the sampling buffer container 31, the vent 317 is used to release the internal pressure of the sampling buffer container 31, so that the liquid flowing into the sampling container 32 is at atmospheric pressure.

[0094] In some embodiments, the vacuum system 50 includes a buffer 51 and a vacuum pump, the vacuum pump being connected to the buffer 51 to evacuate the buffer 51; the buffer 51 is provided with a fluid inlet 5121 and a fluid outlet 5122, such as Figure 15 As shown, Figure 15 The diagram shows a schematic of the structure of the buffer 51 of a vacuum system 50 according to an embodiment of this application. The fluid inlet 5121 and the fluid outlet 5122 are respectively connected to the dissolution system 20 to provide a stable negative pressure to the dissolution system 20. By setting the buffer 51, the negative pressure is indirectly provided to the dissolution system 20. Furthermore, the buffer 51 is used to contain the liquid flowing out of the dissolution system 20 and prevent the liquid from being drawn into the vacuum pump.

[0095] Specifically, a vacuum pump is used to evacuate the buffer 51 so that, under negative pressure, the gas in the dissolution system 20 is introduced into the buffer 51 from the fluid inlet 5121, thereby providing negative pressure to the dissolution system 20.

[0096] The vacuum pump is configured to extract gas from the buffer 51 at a predetermined speed to provide a stable negative pressure to the dissolution system 20. For example, the vacuum pump can be configured to extract 20 m³ / s. 3 / h.

[0097] like Figure 15 As shown, in some embodiments, the buffer 51 includes a body 511 and a cover 512, the cover 512 being sealed to the body 511, and the body 511 forming a receiving cavity 5111; a fluid inlet 5121 and a fluid outlet 5122 are disposed on the cover 512 and are configured to be in fluid communication with the receiving cavity 5111, so that gas and liquid in the dissolution system 20 can flow into the receiving cavity 5111 of the buffer 51 through the fluid inlet 5121, or allow liquid to flow back from the receiving cavity 5111 to the dissolution system 20 through the fluid outlet 5122.

[0098] The buffer 51 is connected to the vacuum pump through the vacuum pump interface 5123. The vacuum pump interface 5123 is located on the cover 512 and is in fluid communication with the receiving cavity 5111, so that the gas in the receiving cavity 5111 is extracted by the vacuum pump through the vacuum pump interface 5123.

[0099] In some embodiments, the buffer 51 further includes a guide post 513, such as Figure 16 As shown, Figure 16 This diagram shows a perspective view of a buffer member 51 of a vacuum system 50 according to an embodiment of this application. A guide post 513 is disposed within a receiving cavity 5111. The guide post 513 is connected to a fluid inlet 5121 and a fluid outlet 5122, and extends to the bottom of the receiving cavity 5111, with a gap between the guide post 513 and the bottom of the receiving cavity 5111. The guide post 513 provides guidance for the inflow and outflow of gas or liquid, allowing the gas or liquid to flow to the bottom of the receiving cavity 5111 under the guidance of the guide post 513, or to draw the liquid out of the receiving cavity 5111 from the bottom of the receiving cavity 5111, further preventing the liquid from being drawn into the vacuum pump.

[0100] like Figure 15 and Figure 16 As shown, in some embodiments, the buffer 51 further includes a cooling water inlet 514 and a cooling water outlet 515, which are disposed in the receiving cavity 5111. Cooling water enters the receiving cavity 5111 from the cooling water inlet 514 and flows out of the receiving cavity 5111 from the cooling water outlet 515. The cooling water is used to cool the fluid entering the receiving cavity 5111 from the dissolution system 20, thereby reducing the temperature of the gas in the receiving cavity 5111 extracted by the vacuum pump and ensuring the stable operation of the vacuum pump.

[0101] The cooling water inlet 514 and the cooling water outlet 515 can be provided on the side wall of the buffer member 51, and the cooling water inlet 514 is positioned closer to the bottom of the receiving cavity 5111 than the cooling water outlet 515, so that the cooling water can circulate within the receiving cavity 5111.

[0102] like Figure 15 and Figure 16 As shown, in some embodiments, the vacuum system 50 further includes a support 52 disposed below the buffer 51, configured to support the buffer 51, carry the buffer 51, and fix the buffer 51 to an external component disposed below.

[0103] The support 52 may include multiple rod-shaped members 521 and ring-shaped members 522. One end of each rod-shaped member 521 is connected to the bottom of the buffer member 51, and the other end is fixedly connected to the ring-shaped member 522, so that the buffer member 51 is supported by the multiple rod-shaped members on the ring-shaped member 522. The ring-shaped member 522 is provided with a fixing part 5221 for fixing the ring-shaped member 522 to the external component below, thereby fixing the buffer member 51 to the external component below.

[0104] In some embodiments, the vacuum system 50 further includes a pressure detection element 53 and a liquid level detection element 54, which are respectively fixed to the cover 512. The pressure detection element 53 is configured to detect the pressure in the receiving cavity 5111, and the liquid level detection element 54 is configured to detect the liquid level in the receiving cavity 5111. When the pressure detected by the pressure detection element 53 is greater than a predetermined value or the liquid level detected by the liquid level detection element 54 is greater than a predetermined value, the input of liquid into the receiving cavity 5111 is stopped to prevent liquid from overflowing the receiving cavity 5111.

[0105] In some embodiments, the vacuum system 50 may provide a vacuum of 0.15 kPa to the dissolution system 20 to meet the conditions for adding materials into the dissolution system 20 and the dissolution conditions of the powder sample in the dissolution system 20.

[0106] In some embodiments, the vacuum system 50 further includes a mating member 55 disposed on the outside of the body 511 for mating with an external component to keep the buffer 51 in a stable position.

[0107] The mating parts 55 can be configured in multiple ways according to the mating requirements with external components. For example, the mating parts 55 can be configured in three ways. The three mating parts 55 are distributed in an equilateral triangle on the outside of the body 511 to ensure the stability of the buffer 51 when mating with external components.

[0108] In some embodiments, the pressure detection range of the pressure detection element 53 can be -0.1MPa to 0.15MPa to ensure that the pressure detection element 53 can meet the detection requirements of the operating pressure of the buffer element 51. For example, the operating pressure range of the buffer element 51 is -0.08MPa to 0MPa.

[0109] In some embodiments, the exhaust gas treatment system 60 includes a condensation treatment component 61 and a liquid absorption component 62. The condensation treatment component 61 is provided with a cooling water inlet 611, a cooling water outlet 612, a gas inlet 613, a gas outlet 614, and a liquid extraction port 615. Figure 17 and Figure 18 As shown, Figure 17 This is a perspective view of the condensation unit 61 of an exhaust gas treatment system 60 according to an embodiment of this application. Figure 18 This diagram shows a cross-sectional view of the condenser 61 of an exhaust gas treatment system 60 according to an embodiment of this application. Cooling water enters the condenser 61 through the cooling water inlet 611 and exits the condenser 61 through the cooling water outlet 612. Exhaust gas enters the condenser 61 through the gas inlet 613, and the liquid generated after condensation by the cooling water is drawn away through the liquid extraction port 615. The uncondensed exhaust gas flows out through the gas outlet 614 to the liquid absorption unit 62. This achieves multi-stage treatment of the exhaust gas by first inputting the exhaust gas generated by the dissolution system 20 into the condenser 61 for condensation treatment, and then inputting the uncondensed exhaust gas into the liquid absorption unit 62 for absorption treatment.

[0110] like Figure 17 and Figure 18 As shown, in some embodiments, the condensation unit 61 forms two spaced-apart first cavities 6101 and second cavities 6102. Cooling water inlet 611 and cooling water outlet 612 are in fluid communication with the first cavity 6101, while gas outlet 614 and liquid extraction port 615 are in fluid communication with the second cavity 6102. Exhaust gas is condensed in the first cavity 6101, and the condensed liquid and uncondensed exhaust gas enter the second cavity 6102. From there, the liquid is drawn away by the liquid extraction port 615 and flows out through the gas outlet 614 to the liquid absorption unit 62.

[0111] In this embodiment, the condensation unit 61 is configured as two spaced-apart cavities, which realize the condensation treatment of exhaust gas and the storage of the liquid generated after condensation and the uncondensed gas in the same component, so as to reduce space costs, simplify the operation process, and improve the processing efficiency.

[0112] like Figure 17 and Figure 18As shown, in some embodiments, the condensation treatment component 61 includes an outer shell 616, an inner shell 617, and a spacer 618. A portion of the inner side of the outer shell 616, the outer side of the inner shell 617, and the spacer 618 form a first cavity 6101; the inner side of the inner shell 617, the inner side of another portion of the outer shell 616, and the spacer 618 form a second cavity 6102, thereby achieving a spaced-apart arrangement between the first cavity 6101 and the second cavity 6102.

[0113] like Figure 17 and Figure 18 As shown, in some embodiments, the condensation treatment component 61 includes a gas guide 619, which is disposed within the first cavity 6101 and extends spirally along the outer side of the inner shell 617. A gas inlet 613 is in fluid communication with one end of the gas guide 619, and the other end of the gas guide 619 extends into the second cavity 6102. Cooling water condenses the gas in the gas guide 619, and the condensed gas forms a liquid that enters the second cavity 6102. Uncondensed gas also enters the second cavity 6102. In this embodiment, by configuring the gas guide 619 to extend spirally along the outer side of the inner shell 617, the gas guide 619 forms a coil structure, thereby extending the flow time of the exhaust gas within the coil structure of the gas guide 619, allowing the exhaust gas to be fully condensed by the cooling water, thus ensuring the condensation effect on the exhaust gas.

[0114] The condensation treatment component 61 also includes a liquid extraction component 6103, which is disposed in the second cavity 6102. One end of the liquid extraction component 6103 is in fluid communication with the liquid extraction port 615, and the other end extends to the bottom of the second cavity 6102, so that the liquid formed by the cooled gas in the second cavity 6102 can be drawn away from the liquid extraction port 615 through the liquid extraction component 6103.

[0115] Specifically, cooling water flows into the first chamber 6101 through the cooling water inlet 611 to condense the gas in the gas guide 619. The condensed liquid and the uncondensed gas enter the second chamber 6102. The condensed liquid is sucked away from the liquid extraction port 615 through the liquid extraction member 6103, and the uncondensed gas flows out from the gas outlet 614 to the liquid absorption member 62.

[0116] In some embodiments, the condensation treatment unit 61 further includes a level gauge 6104, which is configured to monitor the level of the liquid formed by the condensation of the exhaust gas in the second chamber 6102, so as to prevent the liquid level from exceeding a predetermined requirement.

[0117] In some embodiments, the liquid absorber 62 is provided with a gas inlet 621, a gas outlet 622, a liquid inlet 623, and a liquid extraction port 624, such as Figure 19 and Figure 20 As shown, Figure 19 This is a perspective view of the liquid absorption element 62 of an exhaust gas treatment system 60 according to an embodiment of this application. Figure 20 This diagram shows a cross-sectional view of the liquid absorber 62 of an exhaust gas treatment system 60 according to an embodiment of this application. The treatment liquid enters the liquid absorber 62 through the inlet 623 and exits through the outlet 624. Uncondensed exhaust gas enters the liquid absorber 62 through the gas inlet 621, and a portion of the exhaust gas is absorbed by the treatment liquid. The outlet 624 is configured to remove the treatment liquid containing the absorbed exhaust gas from the liquid absorber 62. The gas outlet 622 is configured to allow exhaust gas that has not reacted with the treatment liquid to exit. This allows the uncondensed exhaust gas to react with the treatment liquid, thereby absorbing harmful substances in the exhaust gas.

[0118] Multiple liquid absorbers 62 can be provided, and the multiple liquid absorbers 62 are configured to hold different treatment liquids to absorb components of different properties in the exhaust gas, thereby treating the exhaust gas to meet predetermined requirements. For example, two liquid absorbers 62 can be provided, which respectively hold alkaline solution and deionized water to neutralize acidic substances in the exhaust gas.

[0119] like Figure 19 and Figure 20 As shown, in some embodiments, the liquid absorption element 62 forms two interconnected first cavities 6201 and second cavities 6202. A gas inlet 621 is connected to the first cavity 6201 via a pipe; exhaust gas enters the first cavity 6201 and then enters the second cavity 6202 from the first cavity 6201. A liquid inlet 623 is in fluid communication with the second cavity 6202, allowing the treated liquid to enter the second cavity 6202 through the liquid inlet 623. A liquid extraction port 624 and a gas outlet 622 are in fluid communication with the second cavity 6202 via pipes; the gas outlet 622 is in fluid communication with the first cavity 6201.

[0120] In this embodiment, the liquid absorption element 62 is configured as two interconnected cavities, so that the exhaust gas reacts with the treatment liquid in the second cavity 6202, and the first cavity 6201 is used as a buffer area, so that when the treatment liquid is backflowed due to the pressure change in the second cavity 6202, it can flow into the first cavity 6201 for temporary storage, thus preventing the treatment liquid and the exhaust gas that has not been absorbed by the treatment liquid from flowing out of the liquid absorption element 62 together.

[0121] like Figure 19 and Figure 20As shown, in some embodiments, the liquid absorption member 62 includes a housing 625, a spacer 626, and a gas guide pipe 627. The spacer 626 is configured to divide the housing 625 into a first cavity 6201 and a second cavity 6202. The spacer 626 is provided with a hole 6261. The gas guide pipe 627 is disposed in the second cavity 6202 and is in fluid communication with the gas guide pipe 627 through the hole 6261. The gas guide pipe 627 extends in the second cavity 6202, with its outlet end close to the bottom of the second cavity 6202, so that the exhaust gas can be directly delivered to the bottom of the second cavity 6202 through the gas guide pipe 627 to fully contact and react with the treatment liquid.

[0122] Specifically, after the exhaust gas enters the first chamber 6201 through the gas inlet 621, it flows through the hole 6261 and the gas guide pipe 627 into the second chamber 6202, where it reacts with the treatment liquid. The exhaust gas that is not absorbed by the treatment liquid flows out through the gas outlet 622.

[0123] like Figure 19 As shown, in some embodiments, a predetermined distance is left between the opening position of the hole 6261 of the spacer 626 and the pipeline of the gas inlet 621, so that the exhaust gas can first enter the first cavity 6201 from the gas inlet 621, and then flow to the second cavity 6202 through the hole 6261 and the gas guide pipe 627, thereby preventing the exhaust gas from directly entering the hole 6261 from the gas inlet 621 and flowing into the gas guide pipe 627.

[0124] like Figure 19 and Figure 20 As shown, in some embodiments, the liquid absorber 62 further includes a liquid guiding conduit 628, one end of which is configured to be fluidly connected to the liquid extraction port 624. The liquid guiding conduit 628 extends along the first cavity 6201 and the second cavity 6202, and the other end of which is configured to extend to the bottom of the second cavity 6202, so that the treatment liquid after absorbing the exhaust gas can be extracted from the liquid absorber 62 through the liquid guiding conduit 628 from the liquid extraction port 624.

[0125] In some embodiments, the liquid absorption member 62 further includes a level gauge 629, which is disposed in the second cavity 6202 and is configured to monitor the liquid level in the second cavity 6202 to ensure that the liquid level of the treatment liquid in the second cavity 6202 meets the predetermined requirements, so as to avoid the tail gas from being blocked due to excessive liquid level.

[0126] The level gauge 629 can be configured as an external structure, communicating with the inside of the second cavity 6202, so that it can monitor the liquid level in the second cavity 6202.

[0127] In some embodiments, the liquid absorption member 62 further includes a pressure monitoring member 6203, which is connected to the first cavity 6201 and configured to monitor the air pressure inside the first cavity 6201 to ensure that the air pressure value inside the first cavity 6201 meets a predetermined requirement. The pressure detection range of the pressure monitoring member 6203 is -0.1MPa to 0.15MPa.

[0128] In some embodiments, the ion adsorption system 80 may include a seasoning container 81 and an adsorption column 82. The filtered solution is fed into the seasoning container 81, where its acidity and valence state are adjusted. The adjusted solution is then fed into the adsorption column 82, where impurities are adsorbed. In this embodiment, the acidity and valence state of the solution are first adjusted in the seasoning container 81, and then the adsorption column 82 is used to adsorb impurities from the solution, thereby improving the adsorption effect on impurities in the solution.

[0129] Specifically, after the filtered solution is fed into the seasoning container 81, a solution for adjusting the acidity and valence of the solution can be added into the seasoning container 81 through the feeding system 40 to make it fully mixed with the solution. For example, the solution for adjusting the acidity and valence of the solution can be an oxidant, a reducing agent, or an aluminum nitrate solution.

[0130] like Figure 21 and Figure 22 As shown, Figure 21 This diagram shows a schematic representation of the condiment container 81 of an ion adsorption system 80 according to an embodiment of this application. Figure 22 A cross-sectional schematic diagram of the seasoning container 81 of an ion adsorption system 80 according to one embodiment is shown. In some embodiments, the seasoning container 81 is configured as an annular cavity, including an intermediate structure 811 and an outer structure 812. The outer structure 812 surrounds the intermediate structure 811, and the dissolving solution is introduced into the outer structure 812. The radial distance of the cavity formed by the outer structure 812 is less than a predetermined size to avoid excessive storage of the dissolving solution in the outer structure 812, ensuring that the total amount of fissile substances in the dissolving solution is below the critical safety limit, and avoiding nuclear criticality safety problems. For example, the volume of the outer structure 812 can be set to 30L.

[0131] like Figure 21 and Figure 22 As shown, in some embodiments, a bubbling stirring structure 813 is provided inside the external structure 812. The bubbling stirring structure 813 stirs the solution inside the external structure 812 so that the solution is fully mixed with the solution used to adjust its acidity and valence state.

[0132] In some embodiments, the bubbling stirring structure 813 includes a stirring gas inlet 8131 and a stirring tube 8132. The stirring gas inlet 8131 is disposed outside the seasoning container 81, and the stirring tube 8132 is disposed inside the seasoning container 81. A hole is formed on the stirring tube 8132. The stirring gas flows in from the stirring gas inlet 8131 and flows out through the hole of the stirring tube 8132, so that the solution inside the seasoning container 81 is fully and quickly mixed evenly, thereby improving the reaction efficiency and ensuring the reaction effect.

[0133] The stirring tube 8132 extends to the bottom of the seasoning container 81, allowing the stirring gas to pass through the liquid layer from bottom to top in the form of bubbles from the bottom of the seasoning container 81, thereby ensuring that the solution inside the seasoning container 81 is fully mixed.

[0134] like Figure 21 As shown, the external structure 812 is also provided with an air extraction port 814 and a liquid inlet 815. The air extraction port 814 and the liquid inlet 815 are located on the outside of the external structure 812 and are connected to the inside of the external structure 812. The air extraction port 814 extracts the gas inside the external structure 812, creating a high-pressure environment inside it; the liquid inlet 815 is connected to the filtration system 70, and the filtered solution enters the interior of the external structure 812 through the liquid inlet 815.

[0135] like Figure 21 and Figure 22 As shown, a liquid extraction structure 816 is also provided inside the outer structure 812. The liquid extraction structure 816 is used to extract the solution after adjusting the acidity and valence state. The liquid extraction structure 816 includes a liquid extraction port 8161 and a liquid extraction tube 8162. The liquid extraction port 8161 is located outside the outer structure 812, and the liquid extraction tube 8162 is located inside the outer structure 812, extending to the bottom of the outer structure 812. A hole is formed on the liquid extraction tube 8162. The solution after adjusting the acidity and valence state flows in from the hole of the liquid extraction tube 8162 and flows out from the liquid extraction port 8161.

[0136] like Figure 22 As shown, in some embodiments, the condiment container 81 further includes a pressure detection element 817, which is connected to the external structure 812 of the condiment container 81. The pressure detection element 817 is configured to detect the pressure inside the external structure 812 to ensure that its internal pressure meets the requirements. The pressure detection range of the pressure detection element 817 is -0.1MPa to 0.15MPa.

[0137] like Figure 22 As shown, in some embodiments, the condiment container 81 further includes a liquid level detection element 818, which is connected to the external structure 812 of the condiment container 81. The liquid level detection element 818 is configured to monitor the liquid level of the solution inside the external structure 812 to avoid the solution level from exceeding the safety limit.

[0138] like Figure 23 As shown, Figure 23 This diagram illustrates the assembly of an adsorption column 82 and a manual three-way valve 83 in an ion adsorption system 80 according to one embodiment of this application. In some embodiments, the adsorption column 82 includes at least two adsorption columns 82, which are arranged in parallel and are in fluid communication at one end with a seasoning container 81. In this embodiment, at least two adsorption columns 82 are provided, one of which is in normal use, while the other serves as a backup to replace the normally used column 82 when it becomes unusable. This ensures the normal operation of the ion adsorption system and improves the stability and reliability of the dissolving device.

[0139] like Figure 23 As shown, in some embodiments, the ion adsorption system 80 may further include a manual three-way valve 83, which is disposed between one end of at least two adsorption columns 82 and the seasoning container 81, so that one of the two adsorption columns 82 is in fluid communication with the seasoning container 81, and the other of the two adsorption columns 82 is not in fluid communication with the seasoning container 81. Thus, when the normally used adsorption column 82 can no longer work, it is convenient to cut off the communication between the seasoning container 81 and the normally used adsorption column 82, and switch to fluid communication with the standby adsorption column 82, so as to achieve flexible switching.

[0140] In some embodiments, at least two adsorption columns 82 are provided with quick-connect plugs 821 at both ends so that they can be quickly connected to the pipeline, thereby facilitating the disassembly and replacement of the adsorption columns 82.

[0141] In some embodiments, vacuum clamps 822 are provided at both ends of at least two adsorption columns 82 to ensure the sealing of the connection between at least two adsorption columns 82 and the pipeline.

[0142] The following specific embodiments further illustrate the process of using the radioactive powder dissolution apparatus for precise sampling under pressure conditions described in this application.

[0143] The transfer gripper 121 of the transfer component 12 of the material dispensing system 10 grabs a container containing a radioactive powder sample from the outside and carries the container along the moving channel 12211 of the transfer platform component 122. When the container moves to the vicinity of the temporary storage area 12212, the pushers 1223 on both sides of the temporary storage area 12212 push the container into the temporary storage area 12212. At this time, the opening component 1222 moves to the temporary storage area 12212, and the suction cup 12221 of the opening component 1222 picks up the lid of the container. The lifting component 12222 drives the suction cup 12221 and the lid of the container to rise, so as to open the container. The transfer gripper 121 continues to grip the container containing the radioactive powder sample after it has been opened, and moves it along the moving channel 12211 of the transfer platform assembly 122 to the pouring assembly 13. The container is placed on the receiving component 131, and the receiving component 131 is rotated 180° by the flipping component 132, so that the powder sample in the container is poured out. At this time, the vibrator 1311 is turned on to vibrate the container. The poured powder sample flows along the pipeline 133 to the temporary storage bin 134 for temporary storage. The radioactive powder sample in the temporary storage bin 134 is fed into the inlet 1142 of the carrier 114 of the quantitative feeding component 11 and falls into the groove 1111 along the conical channel 1143. The fixed plate 115 is moved by the linear drive unit 113, which drives the quantitative feeding component 111 to move in a straight line, so that the powder sample can fall into multiple grooves 1111 with different quantities. Then, the quantitative feeding component 111 is rotated by the rotary drive unit 112, so that the powder sample in one of the grooves 1111 is thrown out to the weighing component 116. The powder sample falls into the receiving part 1162 through the receiving port 11612 of the weighing part 116. The weighing sensor 1164 weighs the powder sample in the receiving part 1162. After weighing, the rotating part 1163 is driven to rotate and drive the receiving part 1162 to rotate 180°. The powder sample in the receiving part 1162 falls along the conical structure 11613 under the action of gravity and flows out from the opening 11614 and is added to the receiving part 23 of the dissolving system 20.

[0144] The feeding system 40 adds a liquid for dissolving radioactive powder samples into the cavity 221 of the dissolving system 20. The cover 21 of the dissolving system 20 is rotated, causing multiple hooks 2111 of the quick-release structure 211 to engage with multiple protrusions 2221 of the mating structure 222. Each hook 2111 corresponds to a protrusion 2221, and the protrusions 2221 provide a tightening force to the hooks 2111, thereby creating a pre-tightening force on the C-type seal between the cover 21 and the body 22 to seal the dissolving system 20. The radioactive powder sample dissolves in the liquid, resulting in a solution. During the dissolving process, the agitator 24 stirs the solution, and a heating jacket heats the solution.

[0145] During the dissolution process, the dissolving liquid in the dissolution system 20 is extracted using the sampling system 30 to test the dissolution of the powder sample. During sampling, the switch valve 33 of the sampling system 30 is opened, allowing the dissolving liquid in the dissolution system 20 to flow into the cavity of the sampling buffer container 31 through the sampling liquid inlet 311. The pressure inside the sampling buffer container 31 is released through the vent 317. Then, the end of the sampling container 32 is pierced by the needle 314 connected to the lower end of the sampling buffer container 31. The dissolving liquid in the cavity of the sampling buffer container 31 flows directly into the sampling container 32 through the sampling liquid outlet 312 and the needle 314, thus completing the sampling. After sampling, the inside of the sampling buffer container 31 is evacuated to a slightly negative pressure state through the negative pressure interface 315, and the valve controlling the connection between the sampling liquid outlet 312 and the sampling container 32 is quickly opened and then closed, causing the needle 314, the sampling liquid outlet 312, and any residual liquid inside the pipe to return to the sampling buffer container 31.

[0146] When the sampling results meet the predetermined requirements, the solution generated by the dissolving system 20 is input into the filtration system 70 to remove undissolved residues from the solution. Then, the filtered solution is input into the external structure 812 of the seasoning container 81 of the ion adsorption system 80. A solution for adjusting the acidity and valence state of the solution is added to the seasoning container 81 via the feeding system 40. The external structure 812 is then stirred using the bubbling and stirring structure 813 to ensure thorough mixing of the solution and adjust its acidity and valence state. Finally, the solution is extracted via the extraction structure 816 and transported to the adsorption column 82, where impurities are adsorbed and removed from the solution.

[0147] The exhaust gas generated by the dissolution system 20 is transported to the exhaust gas treatment system 60 for treatment. The exhaust gas enters the gas guide 619 through the gas inlet 613 of the condensation treatment unit 61. Cooling water flows into the first chamber 6101 through the cooling water inlet 611 to condense the gas in the gas guide 619. The condensed liquid and the uncondensed gas enter the second chamber 6102. The condensed liquid is sucked away from the liquid outlet 615 through the liquid suction unit 6103, and the uncondensed gas flows out through the gas outlet 614 to the liquid absorption unit 62. The uncondensed gas enters the first chamber 6201 of the liquid absorption unit 62 through the gas inlet 621, and then flows through the hole 6261 and the gas guide pipe 627 into the second chamber 6202 to react with the treatment liquid. The exhaust gas that is not absorbed by the treatment liquid flows out through the gas outlet 622, thus completing the exhaust gas treatment.

[0148] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0149] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A device for accurately sampling radioactive powder under pressure, characterized in that, It includes: The system includes a material dispensing system and a dissolving system. The material dispensing system is configured to receive powder samples from the outside and add the powder samples to the dissolving system according to a predetermined weight. The dissolving system is configured to dissolve a predetermined weight of powder sample that has entered its interior; A sampling system that extracts the solution from the dissolving system; A feeding system configured to add a liquid for dissolving powder into the dissolving system; A vacuum system configured to provide negative pressure when material is added to the dissolving system; An exhaust gas treatment system is configured to treat the exhaust gas generated by the dissolution system; A filtration system is provided, wherein the solution generated by the dissolving system is input into the filtration system, and the filtration system removes undissolved residue from the solution. An ion adsorption system is used to remove impurities from a filtered solution. The sampling system is configured to sample the solution under pressure during the dissolution process; Furthermore, the sampling system is configured to be self-cleaning, preventing the previous sampling from interfering with the next sampling; The material dispensing system includes a metering feeding component, which is configured to add a predetermined weight of radioactive powder into the dissolving system. The quantitative feeding assembly includes a quantitative feeding component, a rotary drive unit, and a linear drive unit. The metering feeder is provided with multiple grooves with different metering values. Radioactive powder is added into different grooves to obtain different predetermined amounts of powder samples. The rotary drive unit is configured to rotatably drive the metering feeder, so that the metering feeder turns from the material receiving position to the material dispensing position. At the material receiving position, the metering feeder receives a powder sample in one of the grooves of different quantities in the metering feeder, and at the material dispensing position, the metering feeder dispenses the powder sample in the groove. The linear drive unit is configured to drive the metering feeder along a straight line, thereby changing the position of the groove receiving the powder sample so that the amount of powder sample received can be changed as needed.

2. The apparatus according to claim 1, characterized in that, The sampling system includes a sampling buffer container and a sampling container, the sampling buffer container being in fluid communication with the dissolution system. A switching valve is provided between the sampling buffer container and the dissolution system, and the switching valve can control whether the sampling buffer container and the dissolution system are in fluid communication or not. The sampling container and the sampling buffer container are in fluid communication.

3. The apparatus according to claim 2, characterized in that, The sampling buffer container and the dissolving system are configured such that the sampling buffer container has a higher liquid level than the dissolving system.

4. The apparatus according to claim 2, characterized in that, The sampling buffer container is provided with a sampling liquid inlet and a sampling liquid outlet at its bottom. The sampling liquid outlet is in fluid communication with the sampling container, so that the liquid in the sampling buffer container flows into the sampling container; The sampling liquid inlet is in fluid communication with the dissolution system. Liquid from the dissolution system flows into the sampling buffer container from the sampling liquid inlet. The sampling liquid inlet is configured such that its guiding direction is perpendicular to the flow direction of the liquid.

5. The apparatus according to claim 4, characterized in that, The sampling buffer container is also equipped with a liquid level detection device, which is located above the sampling liquid inlet, and a baffle is provided above the sampling liquid inlet.

6. The apparatus according to claim 2, characterized in that, The sampling buffer container is connected to a needle at its lower end. The needle can pierce the end of the sampling container during sampling so that the sampling liquid does not come into contact with the outside world during the sampling process.

7. The apparatus according to claim 2, characterized in that, It also includes a pressure detection element, which is configured to be connected to the sampling buffer container and to detect the pressure inside the sampling buffer container.

8. The apparatus according to claim 2, characterized in that, The sampling buffer container is also equipped with a negative pressure interface, which is used to draw negative pressure into the sampling buffer container.

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