Carbon adsorption box structure of superconducting magnet

Abstract

The utility model discloses a carbon adsorption box structure of a superconducting magnet, a carbon adsorption box is provided with a containing cavity, a plurality of air holes are formed in the peripheral wall of a box body of the carbon adsorption box at intervals, and the containing cavity is communicated with the outside through the air holes. The containing cavity comprises a plurality of filling cavities and a heating cavity which are separated from one another, each filling cavity is filled with an activated carbon adsorption material, a heater is arranged in the heating cavity, the plurality of filling cavities surround the heating cavity, and the heating cavity is adjacent to each filling cavity. The containing cavity is divided into a plurality of filling cavities and heating cavities which are independent from one another, and the heating cavities and the filling cavities are independent and separated from one another, so that even if a heater in the heating cavity is damaged, the heater cannot be in direct contact with activated carbon, the problem of short circuit caused by contact between the activated carbon and the damaged heater is avoided, and the safety is higher; and the normal use of the carbon adsorption box is ensured. The multiple filling cavities are filled with activated carbon adsorption materials, impurities can be effectively adsorbed, and the impurities of the superconducting magnet are purified.

Description

A carbon adsorption box structure for a superconducting magnet Technical Field

[0001] This utility model relates to the technical field of superconducting magnets, and in particular to a carbon adsorption box structure for a superconducting magnet. Background Technology

[0002] Superconducting magnets are core components of high-end precision equipment, widely used in fields such as medical imaging, particle physics, and materials science. The stable operation of superconducting magnets depends on the cryogenic environment of the liquid helium temperature range (4.2K). ~ The superconducting magnet operates under a high vacuum state. To ensure the sealing performance of the cold cavity, the insulation protection of components, and the structural stability, epoxy resin is often used for coil winding and the encapsulation and fixation of cold cavity components. However, epoxy resin (especially amine-based curing agents) releases various volatile gaseous impurities during the curing process. These gaseous impurities mainly include basic amines (ethylenediamine, diethylenetriamine, etc.), polar VOCs (methanol, ethanol, formaldehyde, etc.), and non-polar benzene compounds (benzene, toluene, etc.), and may also be accompanied by trace amounts of esters and sulfides. They are characterized by complex composition, large polarity differences, easy condensation at low temperatures, and some are corrosive. These impurities exist within the operating environment of the superconducting magnet. At the same time, during the operation and maintenance of the superconducting magnet, water vapor, air components, and other impurities may also be introduced into the cold cavity and helium circuit. These impurities, together with the gases released during epoxy resin curing, require adsorption and purification through a carbon adsorption box; otherwise, they will seriously affect the operational safety of the superconducting magnet.

[0003] Under the harsh operating conditions of superconducting magnets, unadsorbed impurities can pose multiple risks: In low-temperature environments, water vapor, amines, and aldehydes easily condense into solid particles, clogging the helium microcirculation loop, disrupting the magnet's temperature field uniformity and vacuum stability, and increasing liquid helium consumption; reactive gases (such as formaldehyde and oxygen) can oxidize core materials of the superconducting coils, such as niobium-titanium and niobium-tin alloys, aging the insulation layer and significantly increasing the probability of magnet quench failure; and if the carbon adsorption box itself has structural defects, it can cause adsorbent particles to detach and modifiers to volatilize. These impurities, after contaminating the cold cavity, will further interfere with magnetic field uniformity and exacerbate component wear. In addition, superconducting magnets have extremely high thermal radiation insulation requirements, and improper adsorption box structural design can increase heat exchange in the cold cavity, compromising the stability of the low-temperature environment.

[0004] The carbon adsorption box is a core component of the superconducting magnet impurity purification system. Existing carbon adsorption boxes mostly use activated carbon as the adsorption substrate and have an internal heating element for regeneration. However, when using a thin-film heating element, the heating element is located inside the carbon adsorption box and in contact with the activated carbon. When the heating element is under pressure, its insulation is easily damaged, causing a short circuit when it comes into contact with the activated carbon. For example, see Chinese Patent Publication No. CN206229369U, which discloses an adsorption device for a vacuum environment. The heating element is located inside the carbon adsorption box and in contact with the activated carbon. When the heating element is under pressure, its insulation is easily damaged, causing a short circuit when it comes into contact with the activated carbon, resulting in the carbon adsorption box becoming unusable.

[0005] Therefore, existing carbon adsorption boxes used for purifying impurities in superconducting magnets have the problem that if the heating element is damaged, it can easily come into contact with the activated carbon, causing a short circuit and rendering the carbon adsorption box unusable. Summary of the Invention

[0006] The purpose of this invention is to solve the problem in the prior art that carbon adsorption boxes used for purifying impurities in superconducting magnets are prone to short circuits when the heating element is damaged and comes into contact with the activated carbon, rendering the carbon adsorption box unusable.

[0007] To address the aforementioned technical problems, this utility model discloses a carbon adsorption box structure for a superconducting magnet. The carbon adsorption box has a receiving cavity, and multiple vent holes are spaced apart on the outer peripheral wall of the box body. The receiving cavity communicates with the outside through these vent holes. The receiving cavity includes multiple filling cavities separated from each other and a heating cavity. Each filling cavity is filled with activated carbon adsorption material, and a heater is installed in the heating cavity. The multiple filling cavities surround the heating cavity, and the heating cavity is adjacent to each of the filling cavities. The heating cavity is located at the center of the receiving cavity, and is separated from the filling cavities. Adjacent filling cavities are separated by partitions.

[0008] By adopting the above technical solution, the containing cavity is divided into multiple independent filling cavities and heating cavities. Activated carbon adsorbent material is filled into the filling cavities, and the heater is set in the heating cavity. The multiple filling cavities surround and are adjacent to the heating cavity. That is to say, the heating cavity and the filling cavity are independent and separated from each other. The heater in the heating cavity will not be compressed by the activated carbon adsorbent material and is not easy to be damaged. Even if the heater in the heating cavity is damaged, the activated carbon will not come into direct contact with the damaged heater because the filling cavity and the heating cavity are separated from each other. This avoids the short circuit problem caused by the activated carbon coming into contact with the damaged heater and ensures the normal use of the carbon adsorption box.

[0009] Furthermore, in the scheme disclosed in this utility model, multiple filling cavities are filled with activated carbon adsorbent material and connected to the outside through vent holes. This ensures that the activated carbon is in full contact with the gas in the superconducting magnet environment, effectively adsorbing impurities and achieving the purification function of impurities in the superconducting magnet, thus maintaining a good operating environment for the superconducting magnet. Moreover, the heating chamber is located in the center of the containing cavity, so that regardless of whether the multiple filling cavities are arranged side-by-side in the length or height direction, heat can be diffused relatively evenly from the heating chamber to the surrounding filling cavities.

[0010] The present invention also discloses a carbon adsorption box structure for a superconducting magnet, wherein multiple filling cavities are arranged side by side along the length of the accommodating cavity, each partition is a partition plate extending along the height of the accommodating cavity, and a heat-conducting partition wall is also provided between the heating cavity and each filling cavity.

[0011] Alternatively, multiple filling cavities are arranged side by side in the height direction of the receiving cavity, each partition is a partition plate extending in the length direction, and a heat-conducting partition wall is provided between the heating cavity and each filling cavity.

[0012] By adopting the above technical solution, when multiple filling cavities are arranged side by side along the length or height of the cavity, the overall structure is more compact and the space utilization of the filling cavities is improved. When arranged along the length, heat can be transferred sequentially to each filling cavity; when arranged along the height, heat can be evenly distributed in the vertical direction. This uniform heating method ensures that the activated carbon adsorbent material reaches a suitable working temperature in all parts, improves the impurity adsorption efficiency, and avoids the degradation of activated carbon adsorption performance due to excessively high or low local temperatures.

[0013] This invention also discloses a carbon adsorption box structure for a superconducting magnet. The partition plates are alloy partition plates, and each alloy partition plate has multiple vent holes spaced apart from each other. Adjacent filling cavities are respectively filled with different types of activated carbon adsorbent materials. Each activated carbon adsorbent material is granular, and the minimum particle size of each type of activated carbon adsorbent material is larger than the pore size of the corresponding vent holes on the partition plate.

[0014] Using the above technical solution, two adjacent filling cavities are filled with different types of activated carbon adsorption materials. Different types of activated carbon have different pore structures and surface chemical properties, and have specific adsorption capabilities for different types of impurities, thereby improving the removal efficiency and purification effect of various impurities.

[0015] The separator is made of alloy, which has high strength, hardness, and good corrosion resistance. Multiple vent holes are spaced apart on the alloy separator, allowing gas to flow between adjacent filling chambers. During the operation of the superconducting magnet, impurity gases generated in different areas can flow between the filling chambers through the vent holes, allowing different types of activated carbon adsorbents to fully exert their adsorption capacity and improving the overall purification effect on impurities. Furthermore, the minimum particle size of each type of activated carbon adsorbent is larger than the pore size of the corresponding separator, preventing activated carbon particles in different filling chambers from mixing through the vent holes and avoiding material mixing or cross-contamination.

[0016] The present invention also discloses a carbon adsorption box structure for a superconducting magnet. The inner wall of the carbon adsorption box is provided with a breathable partition component. One side of the breathable partition component is in close contact with the inner wall of the box, and the other side is in contact with the corresponding side of the activated carbon adsorption material in the corresponding filling cavity.

[0017] Using the above technical solution, the permeable partition component is permeable, allowing gas from the superconducting magnet environment to pass through and enter the filling cavity to contact the activated carbon adsorption material. This enables impurity gases to be successfully adsorbed by the activated carbon, ensuring the impurity purification function of the carbon adsorption box. Furthermore, the permeable partition component also has a separating effect, preventing the activated carbon adsorption material from leaking out from the vents.

[0018] The present invention also discloses a carbon adsorption box structure for a superconducting magnet. The air-permeable separation component includes a layer of air-permeable fiber and a metal mesh stacked together. The air-permeable fiber layer is attached to the inner wall of the box, and one side of the metal mesh is attached to the side of the air-permeable fiber layer away from the inner wall of the box, while the other side is attached to the corresponding side of the activated carbon adsorption material in the corresponding filling cavity.

[0019] Using the above technical solution, the breathable fiber layer of the breathable separator component adheres closely to the inner wall of the box, ensuring smooth gas passage. Furthermore, the fiber layer also provides preliminary filtration for the gas entering the filling cavity. The metal mesh, with its high strength and rigidity, provides structural support for the breathable separator component, enhancing its compressive strength. The mesh size of the metal mesh can be rationally designed according to the particle size of the activated carbon adsorbent material, effectively preventing activated carbon particles from leaking into other areas through the breathable separator component.

[0020] The present invention also discloses a carbon adsorption box structure for a superconducting magnet, wherein the heating cavity extends from the top of the carbon adsorption box toward the receiving cavity, and the heater is encapsulated in the heating cavity.

[0021] Using the above technical solution, the heater can be easily installed by inserting it into the heater cavity through the top of the carbon adsorption box, which improves the ease of installation. Furthermore, because the heater is encapsulated in the heating cavity and isolated from other filling cavities filled with activated carbon adsorption material, damage or short circuits are avoided. The heat generated by the heater can be transferred to the filling cavities through the heating cavity, thereby heating the activated carbon adsorption material in each filling cavity, allowing the activated carbon adsorption material in the filling cavity to exert good adsorption performance.

[0022] The present invention also discloses a carbon adsorption box structure for a superconducting magnet, which includes a base, on which multiple carbon adsorption boxes are spaced apart, and on which multiple mounting grooves are provided to fit each of the multiple carbon adsorption boxes.

[0023] By employing the above technical solution, multiple carbon adsorption boxes are spaced apart on the base, increasing the adsorption area and capacity, enabling the simultaneous adsorption and purification of more impurities in the superconducting magnet. Furthermore, the mounting grooves on the base provide excellent fixation and constraint for the carbon adsorption boxes, ensuring the stability and reliability of their installation.

[0024] The present invention also discloses a carbon adsorption box structure for a superconducting magnet. Each carbon adsorption box is sealed and fixed in the corresponding mounting groove by a sealing strip. Furthermore, the outer surface of the box body and base of the carbon adsorption box is covered with an adhesive tape layer, and the adhesive tape layer has through holes corresponding to multiple ventilation holes.

[0025] Using the above technical solution, each carbon adsorption box is sealed and fixed in the corresponding mounting groove by a sealing strip. The sealing strip effectively fills the tiny gap between the carbon adsorption box and the mounting groove, preventing external air, moisture, and impurities from entering the interior of the carbon adsorption box. The outer surface of the carbon adsorption box body and base is covered with an adhesive tape layer. The adhesive tape layer effectively reduces the transfer of external heat to the interior of the carbon adsorption box, while also preventing the heat inside the carbon adsorption box from dissipating too quickly, maintaining a relatively stable temperature environment inside the carbon adsorption box.

[0026] The present invention also discloses a carbon adsorption box structure for a superconducting magnet. A sensor is provided on the side of the base near the carbon adsorption box. The sensor is detachably fixed on the base and detects the adsorption saturation of the activated carbon adsorption material in each filling cavity.

[0027] The present invention also discloses a carbon adsorption box structure for a superconducting magnet. Multiple insulating support columns are provided at intervals at the bottom of the base away from the carbon adsorption box. The base is supported in the helium-cooled cavity of the superconducting magnet by the multiple insulating support columns.

[0028] By adopting the above technical solution and setting multiple insulating support columns, the base can be electrically and thermally insulated, and the base can be supported to ensure that the base and carbon adsorption box are always in a stable working state. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the overall structure of the carbon adsorption box structure of the superconducting magnet provided in the embodiment of this utility model;

[0030] Figure 2 is a schematic diagram of the carbon adsorption box structure of the superconducting magnet provided in the embodiment of this utility model;

[0031] Figure 3 is a partial schematic diagram of part A in Figure 2;

[0032] Figure 4 is a partial schematic diagram of part B in Figure 2;

[0033] Figure 5 is a side view of the carbon adsorption box structure of the superconducting magnet provided in the embodiment of this utility model;

[0034] Figure 6 is a schematic diagram of the other side of the carbon adsorption box structure of the superconducting magnet provided in the embodiment of this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Carbon adsorption box;

[0037] 101. Box body; 102. Ventilation holes; 103. Adhesive tape layer;

[0038] 100. Receiving cavity;

[0039] 110. Filling cavity; 120. Heating cavity; 130. Separator;

[0040] 140. Breathable partition components;

[0041] 141. Breathable fiber layer; 142. Metal mesh;

[0042] 20. Heater;

[0043] 30. Base;

[0044] 310. Mounting groove; 320. Sealing strip; 330. Insulating support column;

[0045] 40. Sensors. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0047] This embodiment discloses a carbon adsorption box structure for a superconducting magnet, including a base 30 and a carbon adsorption box 10. The carbon adsorption box 10 is fixedly disposed on the base 30. It should be noted that one or more carbon adsorption boxes 10 can be disposed on the base 30. In this embodiment, multiple carbon adsorption boxes 10 are disposed on the base 30. Referring to Figure 1, in this embodiment, five carbon adsorption boxes 10 are disposed at intervals on the base 30, and the structure of each carbon adsorption box 10 is the same.

[0048] Next, we will describe the specific structure of one of the carbon adsorption boxes 10 in detail:

[0049] Referring to Figures 1 and 2, the carbon adsorption box 10 has a receiving cavity 100. Multiple vent holes 102 are spaced apart on the outer peripheral wall of the box body 101 of the carbon adsorption box 10. The receiving cavity 100 communicates with the outside through the vent holes 102. The receiving cavity 100 includes multiple filling cavities 110 separated from each other and a heating cavity 120. Each filling cavity 110 is filled with activated carbon adsorption material, and a heater 20 is disposed in the heating cavity 120. Furthermore, the multiple filling cavities 110 surround the heating cavity 120, and the heating cavity 120 is adjacent to each of the filling cavities 110. Referring to Figures 1 and 2, the heating cavity 120 is located at the center of the receiving cavity 100, and the heating cavity 120 is separated from the filling cavities 110. Adjacent filling cavities 110 are separated from each other by a separator 130.

[0050] It should be noted that the specific structure of the carbon adsorption box 10 is not limited in this embodiment. For example, it can be cylindrical, cubic, or cuboid. Specifically, referring to Figure 1, this embodiment uses a cuboid carbon adsorption box 10 as an example for explanation. Furthermore, in order to improve the adsorption efficiency of the carbon adsorption box 10, multiple vent holes 102 are provided at intervals on each side wall of the box body 101 of the carbon adsorption box 10. The specific number of vent holes 102 is not limited. Preferably, they are arranged in an array to cover each side wall of the box body 101 of the carbon adsorption box 10. In addition, the shape of each vent hole 102 is not limited in this embodiment. For example, the vent hole 102 can be a circular hole, a square hole, etc. The diameter of each vent hole 102 can be designed according to requirements.

[0051] Furthermore, in this embodiment, the number of filling cavities 110 in the receiving cavity 100 is not limited. For example, there can be 2, 3, 4 or other numbers. Multiple filling cavities 110 surround the heating cavity 120. The filling cavities 110 are filled with activated carbon adsorbent material. When the activated carbon adsorbent material in the filling cavity 110 needs to be heated, the heater 20 generates heat and transfers the heat through the heating cavity 120 to the adjacent filling cavities 110 to heat the activated carbon adsorbent material.

[0052] Next, the heating chamber 120 and each filling chamber 110 in this embodiment are adjacent to each other. In this embodiment, the multiple filling chambers 110 surround the heating chamber 120. That is, the heating chamber 120 and the filling chambers 110 are independent and separated from each other. In this way, the heater 20 in the heating chamber 120 will not be compressed by the activated carbon adsorption material, the probability of heater 20 being damaged is reduced, and the service life is longer. Even if the heater 20 in the heating chamber 120 is damaged, since the filling chambers 110 and the heating chamber 120 are separated from each other, the activated carbon will not come into direct contact with the damaged heater 20, thereby avoiding the short circuit problem caused by the activated carbon coming into contact with the damaged heater and ensuring the normal use of the carbon adsorption box.

[0053] Furthermore, in the scheme disclosed in this embodiment, multiple filling cavities 110 are filled with activated carbon adsorbent material and connected to the outside through vent holes 102. This ensures that the activated carbon is in full contact with the gas in the superconducting magnet environment, effectively adsorbing impurities and achieving the purification function of impurities in the superconducting magnet, thus maintaining a good operating environment for the superconducting magnet. The heating cavity 120 is located at the center of the receiving cavity 100, so that regardless of whether the multiple filling cavities 110 are arranged side by side in the length or height direction, heat can be diffused relatively evenly from the heating cavity 120 to the surrounding filling cavities 110.

[0054] This embodiment also discloses a carbon adsorption box structure for a superconducting magnet. Referring to Figure 2, this embodiment preferably provides two filling cavities 110, which are arranged side by side in the height direction of the receiving cavity 100. Each partition 130 is a partition plate extending along the length direction. In other feasible solutions, the partition 130 can also be a partition strip, a partition mesh, etc., and each partition 130 also extends in the horizontal direction. A thermally conductive partition wall (not shown in the figure) is provided between the heating cavity 120 and each filling cavity 110. The function of the thermally conductive partition wall provided between the heating cavity 120 and each filling cavity 110 is to transfer the heat generated by the heater 20 to each filling cavity 110 and physically isolate the heating cavity 120 and the filling cavity 110, so as to avoid direct contact between the heater 20 and the activated carbon adsorption material in the filling cavity 110.

[0055] In another embodiment, multiple filling cavities 110 are arranged side-by-side along the length of the receiving cavity 100. Each partition 130 is a partition plate extending in a direction perpendicular to the length direction. In other possible embodiments, the partition 130 can also be a partition strip, partition mesh, etc., for example, when set as a partition plate, it extends along the height direction. Furthermore, a thermally conductive partition wall is also provided between the heating cavity 120 and each filling cavity 110, similarly transferring the heat generated by the heater 20 to each filling cavity 110 and physically isolating the heating cavity 120 and the filling cavity 110, preventing the heater 20 from directly contacting the activated carbon adsorbent material in the filling cavity 110. For example, two filling cavities 110 can be arranged side-by-side along the length of the receiving cavity 100, with a partition plate between the two filling cavities 110.

[0056] With this structural design in this embodiment, when multiple filling cavities 110 are arranged side-by-side in the length or height direction of the receiving cavity 100, the overall structure is more compact and the space utilization of the filling cavities 110 is improved. When arranged in the length direction, heat can be transferred sequentially to each filling cavity 110 along the length direction; when arranged in the height direction, heat can be evenly distributed in the vertical direction. This uniform heating method ensures that the activated carbon adsorbent material reaches a suitable working temperature in all parts, improves the impurity adsorption efficiency, and avoids the degradation of activated carbon adsorption performance due to excessively high or low local temperatures.

[0057] This embodiment also discloses a carbon adsorption box structure for a superconducting magnet. Referring to Figures 1 and 2, a heating chamber 120 extends from the top of the carbon adsorption box 10 into the receiving cavity 100, and a heater 20 is encapsulated within the heating chamber 120. Preferably, in this embodiment, the resistance of the heater 20 is 120Ω.

[0058] With this structural design, the heater 20 can be easily installed by inserting it into the heater 20 cavity through the top of the carbon adsorption box 10, which improves the installation convenience of the heater 20. Furthermore, because the heater 20 is encapsulated in the heating cavity 120, it is isolated from other filling cavities 110 filled with activated carbon adsorption material, avoiding damage or short circuits. The heat generated by the heater 20 can be transferred to the filling cavities 110 through the heating cavity 120, thereby heating the activated carbon adsorption material in each filling cavity 110, allowing the activated carbon adsorption material in the filling cavity 110 to exert good adsorption performance.

[0059] Furthermore, the partition plate disposed between two adjacent filling cavities 110 in this embodiment will be described. In this embodiment, the partition plate is an alloy partition plate, and each alloy partition plate is provided with multiple vent holes (not shown in the figure) spaced apart from each other. The two adjacent filling cavities 110 are respectively filled with different types of activated carbon adsorbent materials. Each activated carbon adsorbent material is granular, and the minimum particle size of each type of activated carbon adsorbent material is larger than the pore size of the corresponding vent holes on the partition plate.

[0060] Taking an example where two filling cavities 110 are arranged along the height direction and separated by an alloy partition, the two filling cavities 110 are filled with different types of activated carbon. For example, one filling cavity 110 is filled with coconut shell activated carbon, and the other filling cavity 110 is filled with modified coconut shell activated carbon. Adjacent filling cavities 110 are separated by a titanium alloy partition. Both the coconut shell activated carbon and the modified coconut shell activated carbon are granular. The titanium alloy partition has vent holes smaller than those of the two types of activated carbon; for example, in this embodiment, the vent hole diameter can be set to 1 mm.

[0061] Furthermore, in this embodiment, the particle diameter of the coconut shell activated carbon and modified coconut shell activated carbon can be in the range of 2-5 mm, for example, 2 mm, 3 mm, 5 mm, etc. The iodine adsorption value of the coconut shell activated carbon and modified coconut shell activated carbon is greater than 1100 mg / g. The modified activated carbon can be modified by organic acid impregnation, oxidation, or MnO2 (manganese dioxide) / CuO (copper oxide) composite loading, etc., to specifically optimize the gas adsorption capacity for epoxy resin.

[0062] In this scheme, two adjacent filling cavities 110 are filled with different types of activated carbon adsorbent materials. Different types of activated carbon have different pore structures and surface chemical properties, and have specific adsorption capabilities for different kinds of impurities, thereby improving the removal efficiency and purification effect of various impurities.

[0063] The separator is made of alloy, which has high strength, hardness, and good corrosion resistance. Multiple vent holes 102 are spaced apart on the alloy separator, allowing gas to flow between adjacent filling cavities 110. During the operation of the superconducting magnet, impurity gases generated in different areas can flow between the filling cavities 110 through the vent holes 102, allowing different types of activated carbon adsorbent materials to fully exert their adsorption capacity and improving the overall purification effect on impurities. Furthermore, the minimum particle size of each type of activated carbon adsorbent material is larger than the pore size of the corresponding vent holes on the separator, preventing activated carbon particles in different filling cavities 110 from mixing through the vent holes 102 and avoiding material mixing or cross-contamination.

[0064] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. Please refer to Figures 2 and 3. The inner wall of the box body 101 of the carbon adsorption box 10 is also provided with a breathable partition component 140. One side of the breathable partition component 140 is in close contact with the inner wall of the box body 101, and the other side is in contact with the corresponding side of the activated carbon adsorption material in the corresponding filling cavity 110.

[0065] With this structural design, the breathable partition component 140 is breathable, allowing gas in the superconducting magnet environment to pass through and enter the filling cavity 110 to contact the activated carbon adsorption material. This allows impurity gases to be successfully adsorbed by the activated carbon, ensuring the impurity purification function of the carbon adsorption box 10. Furthermore, the breathable partition component 140 also has a separating effect, preventing the activated carbon adsorption material from leaking out from the vent holes 102.

[0066] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. Please refer to Figures 2 and 3 for reference. The breathable separation component 140 includes a breathable fiber layer 141 and a metal mesh 142 stacked together. The breathable fiber layer 141 is attached to the inner wall of the box body 101. One side of the metal mesh 142 is attached to the side of the breathable fiber layer 141 away from the inner wall of the box body 101, and the other side is attached to the corresponding side of the activated carbon adsorption material in the corresponding filling cavity 110.

[0067] The specific material of the breathable fiber layer 141 is not limited. For example, it can be natural fiber, such as cotton fiber, hemp fiber, etc., or synthetic fiber, such as polyester fiber, polypropylene fiber, polyamide fiber, etc. The metal mesh 142 can be iron wire mesh, stainless steel wire mesh, copper wire mesh, etc. In this embodiment, the preferred example is that the breathable fiber layer 141 is polyester fiber paper and the metal mesh 142 is stainless steel wire mesh. The polyester fiber paper is selected with a thickness of 0.1-0.3mm, a filtration accuracy of 0.3-5um, and an air permeability of 300-500L / ㎡s. The stainless steel wire mesh is made of 316L material, 200 mesh, and has 2 layers.

[0068] With this design, the breathable fiber layer 141 of the breathable separator 140 is attached to the inner wall of the box 101, ensuring smooth gas passage. Furthermore, the fiber layer provides preliminary filtration of the gas entering the filling cavity 110. The metal mesh 142, with its high strength and rigidity, provides structural support for the breathable separator 140, enhancing its compressive strength. The mesh size of the metal mesh 142 can be rationally designed according to the particle size of the activated carbon adsorption material, effectively preventing activated carbon particles from leaking into other areas through the breathable separator 140.

[0069] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. A plurality of carbon adsorption boxes 10 are spaced apart on a base 30, and a plurality of mounting slots 310 are provided on the base 30 to fit one-to-one with the plurality of carbon adsorption boxes 10. Referring to Figures 1, 2 and 5, five carbon adsorption boxes 10 are spaced apart on the base 30. Those skilled in the art can increase or decrease the number of carbon adsorption boxes 10 as needed, for example, by setting three, six or other numbers of carbon adsorption boxes 10.

[0070] This structural design, with multiple carbon adsorption boxes 10 spaced apart on the base 30, increases the adsorption area and capacity, enabling the simultaneous adsorption and purification of more impurities in the superconducting magnet. Furthermore, the mounting grooves 310 on the base 30 provide effective fixation and constraint for the carbon adsorption boxes 10, ensuring the stability and reliability of their installation.

[0071] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. Referring to Figures 2 and 4, each carbon adsorption box 10 is sealed and fixed in the corresponding mounting groove 310 by a sealing strip 320. Furthermore, referring to Figures 3 and 4, the outer peripheral surfaces of the box body 101 and the base 30 of the carbon adsorption box 10 are covered with an adhesive tape layer 103. The adhesive tape layer 103 has through holes corresponding to a plurality of vent holes 102. It should be noted that in this embodiment, the adhesive tape layer 103 is preferably a PAP aluminized film adhesive tape layer. The PAP aluminized film adhesive tape layer refers to an adhesive tape material with an aluminum film coated on polypropylene material (PAP).

[0072] In this structural design, each carbon adsorption box 10 is sealed and fixed within its corresponding mounting groove 310 by a sealing strip 320. The sealing strip 320 effectively fills the tiny gap between the carbon adsorption box 10 and the mounting groove 310, preventing external air, moisture, and impurities from entering the interior of the carbon adsorption box 10. The outer surfaces of the box body 101 and the base 30 of the carbon adsorption box 10 are covered with an adhesive tape layer 103. This tape layer 103 is a PAP aluminized film tape layer. The PAP aluminized film has excellent heat insulation properties, effectively reducing the transfer of external heat to the interior of the carbon adsorption box 10, while also preventing excessive heat loss from the interior of the carbon adsorption box 10, maintaining a relatively stable temperature environment inside the carbon adsorption box 10. Furthermore, the aluminized film has a certain electromagnetic shielding performance.

[0073] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. Referring to Figures 1 and 6, a sensor 40 is also provided on the side of the base 30 near the carbon adsorption box 10. The sensor 40 is detachably fixed on the base 30 and detects the adsorption saturation of the activated carbon adsorption material in each filling cavity 110.

[0074] The sensor 40 can be detachably fixed to the base 30 by means of clamps, bolts or other structures. The sensor 40 can be a common gas concentration sensor, which can be selected according to the requirements. For example, it can be a QCM sensor (quartz crystal microbalance), PID photoionization sensor, electrochemical sensor, etc., which can detect polar VOCs (methanol, ethanol, formaldehyde, etc.), benzene series compounds, hydrogen sulfide, ammonia, etc. In this embodiment, a QCM sensor is preferred.

[0075] The embodiment of this invention also discloses a carbon adsorption box structure for a superconducting magnet. Please refer to Figure 1. The bottom of the base 30, away from the carbon adsorption box 10, is also provided with a plurality of insulating support columns 330 at intervals. The base 30 is supported in the helium-cooled cavity of the superconducting magnet by the plurality of insulating support columns 330.

[0076] This structural design, with multiple insulating support columns 330, provides electrical and thermal insulation to the base 30 and supports it, ensuring that the base 30 and the carbon adsorption box 10 are always in a stable working state.

[0077] Finally, the manufacturing process of the activated carbon adsorption material disclosed in this embodiment and the usage process of the carbon adsorption box 10 are briefly described:

[0078] The activated carbon adsorption material is coconut shell activated carbon. Before use, the coconut shell activated carbon is pretreated by coarsely sieving out some smaller particles, and then rinsing the larger particles in clean water for 5-10 minutes. After washing, it is placed in an oven at 120℃ for 24 hours to ensure that the moisture content is less than 2%. Modified coconut shell activated carbon only needs to be coarsely dried with a sieve to remove smaller particles without washing. Before use, it is baked in a separate oven to ensure that the moisture content is less than 2%.

[0079] Next, cut out polyester fiber paper that matches the size of the inner wall of the receiving cavity 100 of the carbon adsorption box 10 with scissors. After applying an appropriate amount of resin to the edges, paste it onto the inner wall of the box 101. Then, place stainless steel wire mesh that matches the side wall of the carbon adsorption box 10 on the side and bottom of the carbon adsorption box 10, with two layers of stainless steel wire mesh.

[0080] The baked coconut shell activated carbon is filled into the chamber, and then titanium alloy partitions are placed on them. More baked modified coconut shell activated carbon is then poured onto the partitions, making the activated carbon flush with the surface of the box 101. The box 101 of the carbon adsorption box 10 is then placed in the groove on the base 30 and secured with screws and nuts. After installation, resin sealing strips are applied to the joint between the box 101 and the base 30. After the resin cures, adhesive tape 103 is pasted onto the surface of the carbon adsorption box 10. Ventilation holes are pre-drilled at the vent positions of the carbon adsorption box 10 to prevent blockage.

[0081] Then, the sensor 40 is fixed to the base 30 with a clamp, the heater 20 is encapsulated in the heating chamber 120 of the box 101 with polyimide resin, and finally the insulating support column 330 is locked and fixed to the bottom of the base 30, and supported in the helium-cooled chamber of the superconducting magnet by multiple insulating support columns 330.

[0082] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0083] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0085] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0086] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0087] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A carbon adsorption box structure for a superconducting magnet, characterized in that, The carbon adsorption box has a receiving cavity, and multiple vent holes are spaced apart on the outer peripheral wall of the box body. The receiving cavity communicates with the outside through the vent holes. The receiving cavity includes multiple filling cavities separated from each other and a heating cavity. Each filling cavity is filled with activated carbon adsorption material, and a heater is provided in the heating cavity. The multiple filling cavities surround the heating cavity, and the heating cavity is adjacent to each of the filling cavities. The heating cavity is located at the center of the receiving cavity, and the heating cavity is separated from the filling cavities. Adjacent filling cavities are separated from each other by a separator.

2. The carbon adsorption box structure of a superconducting magnet as described in claim 1, characterized in that, The plurality of filling cavities are arranged side by side with each other in the length direction of the receiving cavity, each of the partitions is a partition plate extending along the height direction of the receiving cavity, and a heat-conducting partition wall is also provided between the heating cavity and each of the filling cavities; or the plurality of filling cavities are arranged side by side with each other in the height direction of the receiving cavity, each of the partitions is a partition plate extending along the length direction, and a heat-conducting partition wall is provided between the heating cavity and each of the filling cavities.

3. The carbon adsorption box structure of a superconducting magnet as described in claim 2, characterized in that, The partition plate is an alloy partition plate, and each alloy partition plate is provided with a plurality of vent holes spaced apart from each other; wherein two adjacent filling cavities are respectively filled with different types of activated carbon adsorbent materials, each activated carbon adsorbent material is granular, and the minimum particle size of each type of activated carbon adsorbent material is larger than the pore size of the vent holes on the corresponding partition plate.

4. The carbon adsorption box structure of a superconducting magnet as described in claim 1, characterized in that, The inner wall of the carbon adsorption box is also provided with a breathable partition component. One side of the breathable partition component is in close contact with the inner wall of the box, and the other side is in contact with the corresponding side of the activated carbon adsorption material in the corresponding filling cavity.

5. The carbon adsorption box structure of a superconducting magnet as described in claim 4, characterized in that, The breathable separation component includes a layer of breathable fiber and a metal mesh stacked together; wherein the breathable fiber layer is abutted against the inner wall of the box, one side of the metal mesh is abutted against the side of the breathable fiber layer away from the inner wall of the box, and the other side abuts against the corresponding side of the activated carbon adsorbent material in the corresponding filling cavity.

6. The carbon adsorption box structure of a superconducting magnet as described in claim 1, characterized in that, The heating chamber extends from the top of the carbon adsorption box toward the receiving cavity, and the heater is encapsulated within the heating chamber.

7. The carbon adsorption box structure of a superconducting magnet as described in any one of claims 1 to 6, characterized in that, It also includes a base on which a plurality of carbon adsorption boxes are spaced apart; and the base is provided with a plurality of mounting slots that are adapted to each of the plurality of carbon adsorption boxes.

8. The carbon adsorption box structure of a superconducting magnet as described in claim 7, characterized in that, Each carbon adsorption box is sealed and fixed in the corresponding mounting groove by a sealing strip; and the outer peripheral surfaces of the carbon adsorption box body and the base are covered with an adhesive tape layer, on which through holes corresponding to the plurality of vent holes are opened.

9. The carbon adsorption box structure of a superconducting magnet as described in claim 7, characterized in that, A sensor is also provided on the side of the base near the carbon adsorption box. The sensor is detachably fixed to the base and detects the adsorption saturation of the activated carbon adsorption material in each of the filling cavities.

10. The carbon adsorption box structure of a superconducting magnet as described in claim 7, characterized in that, The base is provided with multiple insulating support columns at intervals at the bottom away from the carbon adsorption box, and the base is supported in the helium-cooled cavity of the superconducting magnet by the multiple insulating support columns.

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