Drying device of magnet heat insulation container, drying system and nuclear fusion reaction device

Abstract

The utility model provides a drying device and a drying system of a magnet heat insulation container and a nuclear fusion reaction device. The drying device comprises a shell, a drying agent and a filter screen, the shell is filled with the drying agent, an air inlet and an air outlet are formed in the two ends of the shell respectively, and the filter screen covers the air outlet; the drying device is located between the magnet heat insulation container and the air extractor, and air in the magnet heat insulation container flows into the shell from the air inlet under the action of the air extractor, passes through the drying agent in the shell and is exhausted from the air outlet through the air extractor. The drying device can be used for removing water vapor in the magnet heat insulation container and weakening the influence of the water vapor on the operation performance and the service life of the magnet.

Description

Technical Field

[0001] The present application relates to the field of nuclear fusion technology, and in particular to a drying device, a drying system and a nuclear fusion reaction device for a magnet insulation container. Background Art

[0002] With the development of nuclear fusion reaction technology, research on nuclear fusion reaction devices has become more and more extensive.

[0003] A nuclear fusion reactor includes multiple magnets (such as a central solenoid coil, poloidal magnetic field coils, and toroidal magnetic field coils). These magnets are combined to generate a magnetic field to control the plasma and achieve nuclear fusion reactions. The magnets in a nuclear fusion reactor can be superconducting magnets. These magnets must operate below their critical temperature to achieve a superconducting state. Since the critical temperature of a superconducting magnet is typically well below room temperature, the superconducting magnet can be placed in a vacuum, insulated container (such as a dewar) and cooled by a refrigerator.

[0004] Temperature changes during the cooling and warming process can easily cause water vapor to form in the insulated container. This water vapor can affect the operating performance of the magnet and reduce the life of the magnet. Therefore, a solution to remove water vapor from the insulated container is urgently needed. Utility Model Content

[0005] The present application provides a drying device, a drying system and a nuclear fusion reaction device for a magnet insulation container. The drying device can be used to remove water vapor in the magnet insulation container and reduce the impact of water vapor on the operating performance and life of the magnet.

[0006] According to one aspect of the present application, a drying device for a magnet insulation container is provided, comprising: a housing, a desiccant, and a filter screen, wherein the desiccant is filled in the housing, an air inlet and an air outlet are respectively provided at two ends of the housing, and the filter screen covers the air outlet;

[0007] The drying device is located between the magnetic insulation container and the exhaust device. Under the action of the exhaust device, the gas in the magnetic insulation container flows from the air inlet into the outer shell, passes through the desiccant in the outer shell, and is discharged from the air outlet through the exhaust device.

[0008] According to another aspect of the present application, a drying system is provided, comprising: a magnet, a magnet insulation container, a drying device, and an exhaust device, wherein the drying device is the drying device described above;

[0009] The magnet is located in the magnet insulation container, and the drying device is located between the magnet insulation container and the exhaust device, and is used to absorb water vapor in the magnet insulation container.

[0010] According to another aspect of the present application, a nuclear fusion reaction device is provided, comprising: a reaction chamber and the above-mentioned drying system;

[0011] The magnet in the magnet insulation container in the drying system is used to generate a magnetic field to control the plasma in the reaction chamber to generate a nuclear fusion reaction.

[0012] In an embodiment of the present application, a drying device is provided between the magnet insulation container and the exhaust device, and the drying device includes an outer shell and a desiccant filled therein, and the outer shell has an air inlet and an air outlet covered with a filter. Under the action of the exhaust device, the gas in the magnet insulation container can flow into the drying device and be discharged through the exhaust device. In this way, the water vapor in the magnet insulation container can be extracted to the drying device, thereby achieving the dehumidification and drying effect of the magnet insulation container and avoiding the influence of water vapor on the performance of the magnet. And the desiccant in the drying device can absorb the water vapor, and prevent the water vapor from entering the exhaust device and affecting the exhaust device. In addition, the filter covering the air outlet can prevent the desiccant from entering the exhaust device, ensuring better isolation between the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of a drying device for a magnetic insulation container provided in an embodiment of the present application;

[0014] Figure 2 This is a structural diagram of a drying system provided in an embodiment of the present application;

[0015] Figure 3 1 is a schematic structural diagram of another drying device for a magnetic insulation container provided in an embodiment of the present application;

[0016] Figure 4 1 is a schematic structural diagram of a drying device for a magnetic insulation container provided in an embodiment of the present application;

[0017] Figure 5 This is a structural schematic diagram of another drying device for a magnetic insulation container provided in an embodiment of the present application;

[0018] Figure 6 It is a structural schematic diagram of another drying system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present application. Therefore, the present application is not limited to the specific implementations disclosed below.

[0020] The terms used in one or more embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit one or more embodiments of the present application. The singular forms of "a", "said" and "the" used in one or more embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in one or more embodiments of the present application refers to and includes any or all possible combinations of one or more associated listed items. The term "at least one" in one or more embodiments of the present application refers to "one or more" and "a plurality" refers to "two or more". The term "including" is an open description and should be understood as "including but not limited to", and may include other content on the basis of the content already described.

[0021] It should be understood that although the terms "first", "second", etc. may be used to describe various information in one or more embodiments of the present application, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of one or more embodiments of the present application, "first" may also be referred to as "second", and similarly, "second" may also be referred to as "first". Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0022] Magnets are currently used in a variety of scenarios, and their performance requirements are high. Superconducting magnets have great practical value because they lack the electrical losses caused by wire resistance and the magnetic losses caused by the presence of an iron core. For example, superconducting magnets can be used in nuclear fusion reactors, such as in the toroidal field (TF) coils, center solenoid (CS) coils, and poloidal field (PF) coils used in nuclear fusion reactors. Superconducting magnets require extremely low operating temperatures, which can be achieved through cooling using liquid nitrogen, liquid helium, or refrigerators. To maintain low temperatures, superconducting magnets typically operate in an insulated container (such as a high-vacuum dewar) to reduce heat conduction and radiation. The container can also be equipped with thermal insulation materials surrounding the superconducting magnet, which also insulates the superconducting conductor from external components. A cold screen may be provided between the superconducting magnet and the thermal insulation material to provide thermal shielding for the superconducting magnet.

[0023] During the operation of superconducting magnets, low temperature, high vacuum, and quench protection are crucial operating environments. The presence of moisture can severely impact the proper operation of superconducting magnets. When using a refrigerator for cooling, moisture primarily originates from ambient humidity, poor dewar sealing, temperature fluctuations during the cooling and warming process of the superconducting magnet, and condensation on the thermal insulation materials on the exterior of the cold shield. During the cooling process, moisture within the dewar chamber can condense on the magnet's insulation (also known as the thermal insulation), degrading its insulation properties. This increases the risk of short circuits and leakage, and can also cause localized temperature rises and increase heat loads. Moisture can also cause rust and oxide film formation on metal components within the superconducting magnet, impacting the lifespan and performance of the equipment supporting the superconducting magnet. Furthermore, moisture within the dewar chamber can affect the vacuum level, compromising the magnet's performance. During operation, the magnet may experience a quench, potentially damaging the magnet structure. Therefore, quench protection measures are necessary to ensure safe operation.

[0024] A vacuum obtaining device can also be set up for the superconducting magnet to provide a vacuum environment for the superconducting magnet. The vacuum obtaining device may include a mechanical pump and a molecular pump. The vacuum obtaining device is connected to the thermal insulation container of the superconducting magnet. The gas in the thermal insulation container is extracted by running the mechanical pump and the molecular pump, so that the thermal insulation container becomes a vacuum state. In this process, water vapor will be drawn into the mechanical pump and molecular pump in the vacuum equipment, thereby affecting the operating load of the mechanical pump and the molecular pump, causing the pump's sealing ring to wear and affect the vacuum degree, and in severe cases, the pump will be scrapped. Therefore, in order to avoid the impact of water vapor on superconducting magnets and vacuum obtaining equipment and reduce operation and maintenance costs, a solution to the impact of water vapor is urgently needed.

[0025] The present invention provides a drying device for an insulated magnet container, which removes moisture from the container, reducing its impact on the magnet's operating performance and lifespan. The present invention also provides a drying system and a nuclear fusion reactor, including the drying device for the insulated magnet container and the drying system for the nuclear fusion reactor.

[0026] Figure 1 Schematic diagram of the structure of a drying device for a magnetic insulation container provided in an embodiment of the present application. Figure 1As shown, the drying device 10 includes: a shell 101, a desiccant 102 and a filter 103, and the desiccant 102 is filled in the shell 101. The two ends of the shell 101 respectively have an air inlet K1 and an air outlet K2, and the filter 103 covers the air outlet K2. The mesh size of the filter 103 is smaller than the particle size of the desiccant 102. In some embodiments, the air inlet K1 can also be covered with a filter. The drying device 10 is used to absorb water vapor in the magnet insulation container using the desiccant 102 to dry the internal space of the magnet insulation container to prevent water vapor from affecting the operating performance and life of the magnet set in the magnet insulation container.

[0027] It should be noted that Figure 1 Only a small amount of particles in the desiccant 102 are illustrated, and the desiccant 102 can fill the space in the shell 101 to ensure a better drying effect. In some embodiments, the desiccant 102 may not fill the shell 101, such as the desiccant only occupies four-fifths, three-quarters or other space sizes in the shell 101. In an embodiment of the present application, the desiccant 102 may include at least one of a molecular sieve and activated carbon, such as the molecular sieve may be a 3A zeolite molecular sieve. In one embodiment, the desiccant 102 may be formed by mixing molecular sieve and activated carbon in a certain proportion, such as a ratio of molecular sieve to activated carbon of 3:1. The combination of molecular sieve and activated carbon can also absorb some components that affect the operation of magnets or other devices, such as olefin molecules. Olefin molecules are combustibles and are derived from compounds produced after the molecular sieve absorbs water. Activated carbon can be used to filter the molecules to prevent the molecules from being ignited and affecting the device.

[0028] Figure 2 This is a structural diagram of a drying system provided by an embodiment of the present application, in which the drying device 10 of the magnetic insulation container can be applied. Figure 2 As shown, the drying system includes a magnet insulated container 20, a magnet 30, a drying device 10 and an exhaust device 40. The magnet 30 is located in the magnet insulated container 20. The drying device 10 is located between the magnet insulated container 20 and the exhaust device 40. The magnet insulated container 20 can be connected to the air inlet K1 of the drying device 10, and the exhaust device 40 can be connected to the air outlet K2 of the drying device 10. The magnet insulated container 20, the drying device 10 and the exhaust device 40 can be connected in sequence with pipelines, or the air inlet K1 or the air outlet K2 of the drying device 10 can also be directly connected to other devices, such as the air outlet K2 of the drying device 10 can be directly connected to the exhaust device 40.

[0029] After the exhaust device 40 is started, it can extract gas from other devices in the set direction. Under the action of the exhaust device 40, the gas in the magnetic insulation container 20 will flow from the air inlet K1 of the drying device 10 into the outer shell 101 of the drying device 10, and pass through the desiccant 102 inside the outer shell 101. The desiccant 102 can absorb the moisture carried by the gas. Under the action of the exhaust device 40, the gas that has become dry after absorbing moisture can pass through the filter 103 in the drying device 10, flow from the air outlet K2 of the drying device 10 to the exhaust device 40, and then be discharged to the outside space through the exhaust device 40.

[0030] In the embodiment of the present application, the magnet 30 may be a superconducting magnet, and the magnet thermal container 20 may be a Dewar device. The vacuum device 40 may be a vacuum pump that can be used to vacuum the interior space of the magnet thermal container 20. For example, the vacuum device 40 may be a mechanical pump.

[0031] In this embodiment of the present application, moisture in the insulated magnet container 20 can be drawn into the drying device 10, achieving a dehumidifying and drying effect on the insulated magnet container 20, thereby preventing moisture from affecting the performance of the magnet 30. Furthermore, the desiccant 102 in the drying device 10 can absorb this moisture, preventing it from entering the exhaust device 40 and potentially affecting it. Furthermore, the filter 103 covering the air outlet K2 in the drying device 10 prevents the desiccant 102 from entering the exhaust device 40, ensuring good isolation between components.

[0032] The drying device 10 will be described in detail below with reference to the accompanying drawings. Figure 3 is a structural schematic diagram of another drying device for a magnetic insulation container provided in an embodiment of the present application, and Figure 3 Shown is an exploded view of the drying device. Figure 3 Only a small amount of particles in the desiccant 102 are shown. Figure 3 As shown, the housing 101 of the drying device 10 includes a shell 1011 and a sealing cover 1012. In one embodiment, the shell 1011, the sealing cover 1012 and the filter 103 can all be made of stainless steel.

[0033] The housing 1011 has an air inlet K1 at one end and a sealing cover connection port K3 at the other end. The size of the sealing cover connection port K3 can be larger than that of the air inlet K1. A sealing cover 1012 covers the sealing cover connection port K3 to seal the edges of the sealing cover connection port K3. The air outlet K2 of the drying device 10 is located on the sealing cover 1012, for example, in the middle area of ​​the sealing cover 1012. The air inlet K1 and the air outlet K2 can be substantially the same size. The desiccant 102 can be added through the air inlet K1.

[0034] For example, the drying device 10 as a whole can be roughly cylindrical, and the diameter of the sealing cover connection port K3 can be slightly smaller than the diameter of the drying device 10. The sealing cover 1012 can be fixed to the shell 1011 by screws. The drying device 10 can also include a sealing ring (not shown in the figure), and the gap between the sealing cover 1012 and the sealing cover connection port K3 of the shell 1011 is filled with the sealing ring to achieve sealing. In some embodiments, the air inlet K1 and the air outlet K2 can also be provided with connecting short pipes, so that the air inlet K1 and the air outlet K2 can be more conveniently connected to other devices through the connecting short pipes. Figure 3 As shown, a first connecting short pipe D1 is provided at the air inlet K1, and a second connecting short pipe D2 is provided at the air outlet K2.

[0035] Please continue to refer to Figure 3 The filter 103 in the drying device 10 is a hollow cylindrical structure that covers the air outlet K2 and protrudes into the outer shell 101. The air outlet K2 is equivalent to a bottom surface of the cylindrical structure. The diameter of the cylindrical filter 103 can be roughly the same as the caliber of the air outlet K2. In this way, the overall area of ​​the filter 103 is larger, and more gas can pass through the filter 103 per unit time. The exhaust rate of the exhaust device 40 is higher, and the magnetic insulation container 20 can be evacuated to a vacuum state more quickly. In one embodiment, the length of the filter 103 can be less than half the length of the outer shell 101 in the drying device 10 to avoid excessively squeezing the storage space of the desiccant 102 and affecting the drying effect. In some embodiments, the filter 103 can also be a planar structure covering the air outlet K2.

[0036] In one embodiment, the filter screen 103 has threads on its edge, and the air outlet K2 in the housing 101 also has threads on its edge. The filter screen 103 can be threadedly connected to the area of ​​the housing 101 where the air outlet K2 is located, for example, it can be threadedly connected to the sealing cover 1012. The filter screen 103 can also be connected and fixed to the housing 101 using other methods, such as screws or clamping, which are not limited here.

[0037] Figure 4 Schematic diagram of the structure of a drying device for a magnetic insulation container provided in an embodiment of the present application. Figure 5 This is a structural diagram of another drying device for a magnetic insulation container provided in an embodiment of the present application. Figure 5 Can be Figure 4 Exploded view of the structure shown. Figure 4 and Figure 5 Only a small amount of particles in the desiccant 102 are shown. Figure 4 and Figure 5As shown, the drying device 10, based on the aforementioned structure, further includes a heating component 104 located in the housing 101. The heating component 104 can be inserted into the desiccant 102 to bake the desiccant 102 to discharge the moisture in the desiccant 102. The heating temperature of the heating component 104 can be greater than the boiling point of water. In this way, the drying device 10 can be reused to reduce the drying cost. In the case where the drying device 10 does not include the heating component 104, after each use of the drying device to absorb water vapor in the magnetic insulation container, a new drying device can be replaced for the next drying of the magnetic insulation container.

[0038] For example, after the magnet operation (e.g., an excitation experiment) is complete, and without maintaining a vacuum in the magnet's insulated container, the drying device 10 can be removed from the drying system and the heating component 104 activated to bake out the desiccant 102. During this process, a moisture-free gas (e.g., pure nitrogen) can be introduced through the drying device 10's air inlet K1, while the heating component 104 begins to heat the desiccant 102. The water molecules in the desiccant 102 evaporate upon exposure to heat and are then blown away by the nitrogen gas through the air outlet K2. After a period of baking, the desiccant 102 is completely dry and ready for its next use.

[0039] The heating component 104 may be cylindrical, and the axial direction of the cylindrical heating component 104 may be parallel to the arrangement direction of the air inlet K1 and the air outlet K2 in the housing 101, that is, the heating component 104 may extend along the arrangement direction. Figure 4 In some embodiments, the heating component 104 may not be cylindrical, and may be planar, toothed, or any other shape, which is not limited here.

[0040] Please continue to refer to Figure 4 and Figure 5 The heating element 104 can be formed by spirally winding a heating tube. In some embodiments, the heating tube can be wound in other ways to form a heating element 104 in other shapes. For example, the heating tube can be bent in an S-shape or other arbitrary bending manner to form the heating element 104. The heating element 104 can also be formed into a cylindrical shape by bending the heating tube.

[0041] The embodiment of the present application is illustrated by taking the filter 103 and the heating component 104 as an example. In this way, the filter 103 can be located in the surrounding area of ​​the heating component 104. In the radial direction of the housing 101, the distance between the heating component 104 and the inner wall of the housing 101 (such as Figure 4 The distance d1 in the figure may be greater than the first distance threshold; in the axial direction of the housing 101, the distance between the heating component 104 and the housing (eg Figure 4 The distance d2) can be less than the second distance threshold, that is, the difference between the length of the housing 101 and the axial length of the heating element 104 can be less than the second distance threshold. The first and second distance thresholds can be flexibly set according to needs. This configuration ensures a large gap between the side of the cylindrical heating element 104 and the inner wall of the housing 101, and the end of the heating element 104 is close to the end of the housing 101. This allows the heating element 104 to have greater contact with the desiccant 102 at various locations within the housing 101, ensuring effective drying of the desiccant 102 at each location; and also prevents the heating element 104 from affecting the housing 101.

[0042] For example, in the radial direction of the housing 101, the absolute value of the difference between the first distance and the second distance is less than the target distance. The first distance is the distance between the heating component 104 and the housing 101 (e.g. Figure 4 The second distance is the distance between the heating component 104 and the filter 103 (e.g. Figure 4 In this way, the heating element can be positioned midway between the filter 103 and the inner wall of the housing 101. This ensures that the amount of desiccant 102 on both sides of the heating element 104 is substantially the same, thereby ensuring that the desiccant 102 is fully baked and that the baking effect of the desiccant 102 at each location is consistent.

[0043] In the embodiment of the present application, the terminals of the heating component 104 can extend outside the housing 101, so that the heating component 104 can be energized through the terminals to achieve heat release from the heating component 104. If the heating component 104 has two terminals extending outside the housing 101, the housing 101 can have two mounting holes, and the two terminals can be extended through the two mounting holes respectively. Figure 5 As shown, the two mounting holes can be the first mounting hole A1 and the second mounting hole A2. If the heating component 104 is wound from a heating tube, the two terminals of the heating component 104 can be the first and last ends of the heating tube.

[0044] The heating element 104 can be fixed to the sealing cover 1012 in the housing 101. Figure 4 and Figure 5The drying device 10 may further include two mounting bases 105 made of an insulating material, which may be relatively resistant to high temperatures, such as ceramic. The two mounting bases 105 may be respectively disposed in two mounting holes on the housing 101, and both have through holes connecting the inside and outside of the housing 101. The two terminals of the heating component 104 pass through the through holes in the two mounting bases 105 respectively to achieve fixation with the housing 101, such as specifically to achieve fixation with the sealing cover 1012. The mounting bases 105 can ensure that the installation of the heating component 104 is relatively stable, and the mounting base 105 is made of an insulating material, which can avoid electrical connection between the heating component and the housing 101, thereby avoiding adverse effects on the drying device 10.

[0045] The air extraction device 40 in the embodiment of the present application may include a mechanical pump 401 . Figure 6 This is a schematic diagram of the structure of another drying system provided in the embodiment of the present application. Figure 6 As shown, in Figure 3 On the basis of the above, the drying system can also include a molecular pump 50. The mechanical pump 401 and the molecular pump 50 work together to extract the gas from the magnetic insulation container 20, so that the magnetic insulation container 20 has a good vacuum state. The mechanical pump 401 and the molecular pump 50 can together form the vacuum obtaining device of the magnetic insulation container 20, and the mechanical pump 401 and the molecular pump 50 can be connected in series. The mechanical pump 401 is mainly responsible for compressing and exhausting the gas in the magnetic insulation container 20, while the molecular pump 50 is responsible for further improving the vacuum level based on the mechanical pump 401.

[0046] The two ends of the molecular pump 50 are respectively connected to the magnetic insulation container 20 and the mechanical pump 401, that is, the molecular pump 50 is located between the magnetic insulation container 20 and the mechanical pump 401, and the magnetic insulation container 20 is connected in series with the molecular pump 50 and the mechanical pump 401. The molecular pump 50 can be started after the mechanical pump 401 starts for a target time. The starting pressure of the mechanical pump 401 is relatively low, such as 1 Pa, while the starting pressure of the molecular pump 50 is relatively high, such as 500 Pa. Therefore, the mechanical pump 401 can be started first, and the molecular pump 50 can be started when the environment in which the molecular pump 50 is located meets its starting pressure.

[0047] like Figure 6As shown, the drying device 10 can be located between the molecular pump 50 and the mechanical pump 401. In the process of evacuating the magnetic insulation container 20, the mechanical pump 401 is first started to form a low vacuum environment. The water vapor boils and evaporates in the low vacuum environment, passes through the vacuum pipe between the magnetic insulation container 20 and the molecular pump 50, and the molecular pump 50 to the drying device 10, and then flows out from the exhaust port of the mechanical pump 401. In this way, the vacuuming efficiency of the magnetic insulation container 20 can be guaranteed to be high, and the influence of the drying device 10 on the vacuum state in the magnetic insulation container 20 can be avoided. And because the molecular pump 50 has not been started when the mechanical pump 401 is started, the water vapor will basically not adhere to it even if it passes through the molecular pump 50, and will not affect the molecular pump 50. In some embodiments, the drying device 10 can also be located between the magnetic insulation container 20 and the molecular pump 50.

[0048] In some embodiments, please refer to Figure 6 , a thermal insulation material 60 can also be provided between the magnet 30 and the magnet insulation container 20. The thermal insulation material 60 can be used to reduce the temperature recovery speed of the magnet 30 after the magnet 30 is cooled (such as by a refrigerator). The thermal insulation material 60 can be a composite material, such as aluminum foil on the front and insulating material (such as polyimide) on the back, which can have both thermal insulation and insulation properties, thereby extending the low-temperature maintenance time of the magnet 30 and insulating the magnet 30 from the magnet insulation container 20. A cold shield 70 can also be provided between the magnet 30 and the thermal insulation material 60, and the cold shield 70 can be used to thermally shield the magnet 30.

[0049] In the embodiment of the present application, the magnet insulation container 20 is connected to the drying device 10, and 3A zeolite molecular sieve and activated carbon are added to the drying device 10. When the magnet insulation container 20 is roughly vacuumed using a vacuum obtaining device, the gas containing water inside the magnet insulation container 20 will be fully combined with the drying device 10 and then flow out through the exhaust port of the mechanical pump 401, so that the vacuum obtaining device can be protected. During the operation of the magnet 30, the magnet insulation container 20 can always remain connected to the drying device 10, and the gas containing water flows to the drying device 10 and is absorbed, which is conducive to the continuous increase in the vacuum degree in the magnet insulation container 20 to ensure the stability of the operating environment of the magnet 30. A heating component 104 is provided inside the drying device 10. After the magnet is completed once, before the magnet insulation container 20 needs to be vacuumed again, the water molecules combined with the molecular sieve and activated carbon during the last vacuuming process can be discharged by baking through the heating component 104, so that the drying device 10 can be reused and operated for a long time.

[0050] The drying system provided in the embodiment of the present application can better solve the problem of low vacuum degree, affecting the smooth operation of the magnet and damaging the vacuum acquisition equipment due to water vapor in the magnet's thermal insulation materials and Dewar cavity. It can ensure that the magnet does not quench, provide the magnet with a higher vacuum operating environment, and ensure the safety of the vacuum acquisition equipment, thereby greatly reducing the operation and maintenance costs of the magnet.

[0051] The present application also provides a nuclear fusion reaction device, which may include: a reaction chamber and the above-mentioned drying system (such as Figure 3 or Figure 6 The drying system shown in FIG. The magnets in the drying system, located within the magnet-insulated container, are used to generate a magnetic field to control the plasma in the reaction chamber to induce a nuclear fusion reaction. For example, these magnets can be used in the central solenoid coil, poloidal magnetic field coil, and toroidal magnetic field coil in a nuclear fusion reactor.

[0052] Under the action of this drying system, the stable and efficient operation of each magnet in the nuclear fusion reaction device can be guaranteed, and accordingly, better control of the plasma can be guaranteed to achieve a better nuclear fusion reaction effect.

[0053] The above description is of specific embodiments of the present application, and other embodiments are within the scope of the appended claims. In some cases, the structures described in the claims can be implemented using specific structures different from those provided in the embodiments and still achieve the desired results. In addition, the structures depicted in the drawings may only be portions of the actual structures, and the sizes and positional relationships do not necessarily require implementation in the manner shown.

[0054] Those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the structures, actions, and modules involved are not necessarily required for this application. In the above embodiments, the description of each embodiment has its own emphasis. For parts not detailed in one embodiment, please refer to the relevant description of other embodiments.

[0055] The preferred embodiments disclosed above are intended only to help illustrate the present application. The optional embodiments do not exhaustively describe all details, nor do they limit the present application to the specific embodiments described. Obviously, many modifications and variations can be made based on the content of the present application. The present application selects and describes these embodiments in detail in order to better explain the principles and practical applications of the present application, thereby enabling those skilled in the art to better understand and utilize the present application.

Claims

1. A drying device for a magnetic insulation container, characterized in that: include: A housing, a desiccant and a filter, wherein the desiccant is filled in the housing, an air inlet and an air outlet are respectively provided at two ends of the housing, and the filter covers the air outlet; The drying device is located between the magnetic insulation container and the exhaust device. Under the action of the exhaust device, the gas in the magnetic insulation container flows from the air inlet into the outer shell, passes through the desiccant in the outer shell, and is discharged from the air outlet through the exhaust device.

2. The drying device according to claim 1, characterized in that The housing comprises a shell and a sealing cover, wherein one end of the shell has an air inlet and the other end has a sealing cover connection port, the sealing cover covers the sealing cover connection port, and the air outlet is opened on the sealing cover; And / or, the filter screen is a planar structure covering the air outlet, or the filter screen is a cylindrical structure covering the air outlet and protruding into the housing.

3. The drying device according to claim 1 or 2, characterized in that: Also included is a heating element located within the housing; The heating component is inserted into the desiccant and is used to bake the desiccant and discharge moisture from the desiccant.

4. The drying device according to claim 3, characterized in that The heating component is cylindrical, and the axial direction of the cylindrical heating component is parallel to the arrangement direction of the air inlet and the air outlet; And / or, the heating component is formed by spirally winding a heating tube or bending it into an S shape.

5. The drying device according to claim 4, characterized in that The heating component is cylindrical, and the filter is a cylindrical structure protruding into the housing and is located in the surrounding area of ​​the heating component; In the radial direction of the housing, the absolute value of the difference between the first distance and the second distance is smaller than the target distance; wherein the first distance is the distance between the heating component and the housing, and the second distance is the distance between the heating component and the filter.

6. The drying device according to claim 3, characterized in that The housing is provided with two mounting holes, and the drying device further comprises two mounting seats made of insulating material; The two mounting seats are respectively arranged in the two mounting holes, and both have through holes communicating with the inside and outside of the shell; The two terminals of the heating component pass through the through holes in the two mounting seats and are fixed to the housing.

7. The drying device according to claim 1 or 2, characterized in that: The filter is threadedly connected to the area of ​​the housing where the air outlet is located; And / or, the desiccant includes at least one of molecular sieve and activated carbon; And / or, the housing is made of stainless steel.

8. A drying system, characterized in that: include: A magnet, a magnet insulation container, a drying device and an exhaust device, wherein the drying device is the drying device according to any one of claims 1 to 7; The magnet is located in the magnet insulation container, and the drying device is located between the magnet insulation container and the exhaust device, and is used to absorb water vapor in the magnet insulation container.

9. The drying system according to claim 8, characterized in that The gas extraction device is a mechanical pump, and the drying system further includes a molecular pump, wherein the mechanical pump and the molecular pump are used to extract the gas in the magnetic insulation container to make the magnetic insulation container in a vacuum state; Two ends of the molecular pump are connected to the magnet insulation container and the mechanical pump respectively, and the molecular pump is started after the mechanical pump starts for a target time; The drying device is located between the magnet insulation container and the molecular pump, or between the molecular pump and the mechanical pump.

10. A nuclear fusion reaction device, characterized in that: include: A reaction chamber and a drying system according to claim 8 or 9; The magnet in the magnet insulation container in the drying system is used to generate a magnetic field to control the plasma in the reaction chamber to generate a nuclear fusion reaction.

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