High-temperature superconducting magnet cooling structure and high-temperature superconducting device

Abstract

The invention belongs to the technical field of high-temperature superconducting, and discloses a high-temperature superconducting magnet cooling structure and a high-temperature superconducting device. The high-temperature superconducting magnet cooling structure comprises a Dewar, a magnet cold conduction assembly, a cold head cold conduction assembly and a cold shield, a vacuum environment can be created in the Dewar, the magnet cold conduction assembly is in heat conduction connection with the peripheral face and the end face of a double-pancake coil, and the cold head cold conduction assembly is in heat conduction connection with the cold shield and the magnet cold conduction assembly. The cold shield surrounds the high-temperature superconducting magnet, the magnet cold conduction assembly and the cold head cold conduction assembly. According to the high-temperature superconducting magnet cooling structure, on one hand, input of external heat to the high-temperature superconducting magnet can be reduced, on the other hand, through heat conduction connection with the end face and the peripheral face of the double-pancake coil, the high-temperature superconducting magnet can be fully contacted, heat output is enhanced, and input of heat is further reduced by reducing the temperature of the cold shield; therefore, the requirement for temperature control of the high-temperature superconducting magnet is met when a hot spot appears or under a severe working condition.

Description

Technical Field

[0001] This invention relates to the field of high-temperature superconductivity technology, and in particular to a high-temperature superconducting magnet cooling structure and a high-temperature superconducting device. Background Technology

[0002] High-temperature superconducting magnets typically operate at temperatures below 70K, so they must be equipped with appropriate cryogenic systems.

[0003] Existing cryogenic systems typically employ conductive cooling to lower the temperature of high-temperature superconducting magnets. However, superconducting magnets operate in a complex environment with strong thermo-electric-magnetic-mechanical coupling. Any minute local disturbance (such as wire breakage, mechanical friction, or sudden magnetic field changes) can cause a sudden increase in local temperature, forming a "hot spot." Simultaneously, in changing magnetic fields (such as magnet excitation or pulsed operation), the high-temperature superconducting tape generates considerable AC losses (hysteresis losses, coupling current losses, etc.). These losses are directly converted into heat within the superconducting tape, and their power density can be extremely high. In existing cryogenic systems, the cooling power of conductive cooling is relatively low and cannot meet the cooling requirements of high-temperature superconducting magnets when "hot spots" occur or under harsh operating conditions. This leads to a rapid increase in the temperature and size of the high-temperature superconducting magnet, potentially causing it to lose quench.

[0004] Therefore, there is an urgent need for an electroplating apparatus and electroplating method to solve the above-mentioned technical problems. Summary of the Invention

[0005] One objective of this invention is to provide a cooling structure for high-temperature superconducting magnets that can effectively and uniformly cool the magnets and quickly cope with temperature rises caused by localized heating or AC losses in the magnets.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A high-temperature superconducting magnet cooling structure is provided to maintain the operating temperature of the high-temperature superconducting magnet. The high-temperature superconducting magnet includes a main frame and a plurality of double-panel coils arranged along the axial direction of the main frame. The high-temperature superconducting magnet cooling structure includes:

[0008] A Dewar, which can create a vacuum environment, and a high-temperature superconducting magnet can be fixedly installed inside the Dewar;

[0009] A magnet cooling assembly includes an arc-shaped insulating sheet, a coil insulating sheet, and a cooling sheet. The arc-shaped insulating sheet is laid on the outer circumferential surface of the double-pane coil and is thermally connected to the double-pane coil. The coil insulating sheet is disposed between two adjacent double-pane coils and the end face of the double-pane coil is thermally connected to the coil insulating sheet. The cooling sheet, the arc-shaped insulating sheet, and the coil insulating sheet are all thermally connected.

[0010] A cold head heat conduction assembly, comprising heat conduction strands and a cold head flange, wherein the cold head flange is used for thermally connecting the refrigeration device, and the heat conduction plate is thermally connected to the cold head flange through the heat conduction strands and the cold head flange;

[0011] A cold shield is provided, which surrounds the high-temperature superconducting magnet, the magnet cooling component, and the cold head cooling component, and is disposed between the Dewar and the high-temperature superconducting magnet. The cold shield and the cold head flange are thermally connected by the cooling stranded wire.

[0012] In some embodiments, the magnet cooling assembly further includes a skeleton cooling block, with one skeleton cooling block provided at each of the two axial ends of the main skeleton. The skeleton cooling block is thermally connected to the double-panel coil and is thermally connected to the cold head flange through the cooling strand.

[0013] In some embodiments, the inner circumferential surface of the dual-pane coil and the outer circumferential surface of the main frame are thermally connected.

[0014] In some embodiments, an insulating layer is provided on the surface of the skeleton cooling block, the insulating layer being used to insulate the skeleton cooling block and the double-pane coil.

[0015] In some embodiments, the magnet cooling assembly further includes a pull rod that passes through the cooling plate and the frame cooling block along the axial direction of the main frame and is connected to a fastening nut to press the frame cooling block, the cooling plate, the coil insulating sheet, the arc-shaped insulating sheet and the double-panel coil into close contact.

[0016] In some embodiments, along the axial direction of the main frame, the two ends of the coil insulating sheet are respectively thermally connected to the end face of one of the double-panel coils, and the coil insulating sheet is provided with a flange portion protruding along the radial direction of the main frame, the flange portion being used to increase the thermal conductivity of the coil insulating sheet and the cooling sheet.

[0017] In some embodiments, the cooling plate is provided with a relief groove to prevent interference between the cooling plate and the coil insulation sheet. The flange portion can extend into the relief groove to increase the thermal conductivity between the coil insulation sheet and the cooling plate.

[0018] In some embodiments, an insulating thermally conductive grease is disposed between the cooling plate and the arc-shaped insulating plate; and / or,

[0019] An insulating and thermally conductive grease is disposed between the arc-shaped insulating sheet and the double-panel coil; and / or,

[0020] An insulating thermally conductive grease is disposed between the cooling plate and the coil insulating plate; and / or,

[0021] Insulating thermal grease is provided between the cooling block of the skeleton and the main skeleton.

[0022] In some embodiments, the cooling conductor includes a first strand, a second strand, and a third strand, wherein the first strand is thermally connected between the cooling plate and the cold head flange, the second strand is thermally connected between the skeleton cooling block and the cold head flange, and the third strand is thermally connected between the cooling screen and the cold head flange.

[0023] Another objective of this invention is to provide a high-temperature superconducting device that can maintain stable operation and has high reliability.

[0024] To achieve this objective, the present invention adopts the following technical solution:

[0025] A high-temperature superconducting device includes a high-temperature superconducting magnet, a suspension assembly, and a cooling structure for the high-temperature superconducting magnet. The suspension assembly and the high-temperature superconducting magnet are both disposed within the Dewar of the high-temperature superconducting magnet cooling structure. The suspension assembly is connected to the high-temperature superconducting magnet, the Dewar, and the cold screen of the high-temperature superconducting magnet cooling structure to fix the high-temperature superconducting magnet and the cold screen within the Dewar.

[0026] The above technical solution has the following advantages or beneficial effects:

[0027] In this high-temperature superconducting device, by setting up a cooling structure for the high-temperature superconducting magnet, on the one hand, the input of external heat to the high-temperature superconducting magnet can be reduced; on the other hand, by making thermally conductive connections with the end faces and outer peripheral surfaces of the double-pane coils in the high-temperature superconducting magnet, it can fully contact the high-temperature superconducting magnet, enhance the heat output, and further reduce the heat input by lowering the temperature of the cooling screen. Thus, the temperature control requirements for the high-temperature superconducting magnet are met when "hot spots" occur or under harsh operating conditions. Attached Figure Description

[0028] Figure 1 This is an internal structural diagram of the high-temperature superconducting device in an embodiment of the present invention;

[0029] Figure 2 This is an assembly diagram of the high-temperature superconducting magnet and coil insulating sheet in an embodiment of the present invention;

[0030] Figure 3 This is an assembly diagram of the high-temperature superconducting magnet and the magnet cooling assembly in an embodiment of the present invention;

[0031] Figure 4 This is a perspective view of the coil insulating sheet in an embodiment of the present invention;

[0032] Figure 5This is a perspective view of the cooling sheet in an embodiment of the present invention;

[0033] Figure 6 This is a perspective view of the skeleton cooling block in an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Magnet cooling assembly; 11. Coil insulation sheet; 12. Arc-shaped insulation sheet; 13. Cooling sheet; 131. Clearance groove; 14. Frame cooling block; 15. Pull rod;

[0036] 2. Cold screen;

[0037] 3. Dewar;

[0038] 41. Magnet suspension rod; 42. Cold screen suspension rod;

[0039] 51. First stranded wire; 52. Second stranded wire; 53. Third stranded wire; 54. Cold head flange; 55. Cold shield flange;

[0040] 100. Double-panel coil; 101. Main frame. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "abutting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] The following is based on Figures 1 to 6 The high-temperature superconducting magnet cooling structure and high-temperature superconducting device provided in the embodiments of the present invention are introduced.

[0046] like Figure 1 As shown, in this embodiment, the high-temperature superconducting magnet cooling structure includes a Dewar 3, a magnet cooling component 1, a cold head cooling component, and a cold screen 2, which can be thermally connected to the high-temperature superconducting magnet to maintain the operating temperature of the high-temperature superconducting magnet.

[0047] Specifically, the Dewar 3 is a vacuum-insulated container capable of creating a vacuum environment inside, thus providing a highly insulated physical space. A high-temperature superconducting magnet is fixedly disposed inside the Dewar 3, while a cold shield 2 is arranged enclosingly between the high-temperature superconducting magnet and the Dewar 3. The cold shield 2 intercepts radiant heat, further blocking radiant heat from the inner wall of the Dewar 3 to the high-temperature superconducting magnet, thereby reducing the impact of room temperature on the high-temperature superconducting magnet through the Dewar 3.

[0048] The magnet cooling assembly 1 includes an arc-shaped insulating sheet 12, a coil insulating sheet 11, and a cooling sheet 13. (Reference) Figures 1 to 3 As shown, the room-temperature superconducting magnet includes a main frame 101 and multiple double-coil coils 100. Coil insulating sheets 11 and double-coil coils 100 are alternately arranged along the axial direction of the main frame 101. Coil insulating sheets 11 are disposed between two adjacent double-coil coils 100 and are thermally connected to the end faces of adjacent double-coil coils 100. Arc-shaped insulating sheets 12 are laid on the outer circumferential surface of the double-coil coils 100 and are thermally connected to the outer circumferential surface of the double-coil coils 100. Cooling sheets 13 are thermally connected to the arc-shaped insulating sheets 12, the coil insulating sheets 11, and the cold head cooling assembly.

[0049] The cold head cooling assembly includes cooling conductor wires and a cold head flange 54. The cold head flange 54 is used for thermal connection to the refrigeration device and is thermally connected to the aforementioned cooling plate 13 via the cooling conductor wires. When the high-temperature superconducting magnet generates heat, the heat can be transferred to the refrigeration device through the cooling conductor wires and the cold head flange 54, thereby outputting the heat generated by the high-temperature superconducting magnet. The Dewar 3 and the cold shield 2 reduce the transfer of external heat to the high-temperature superconducting magnet. The cold shield 2 is also thermally connected to the cold head flange 54 via the cooling conductor wires, thus working in conjunction with the magnet cooling assembly 1 and the cold head cooling assembly to maintain a suitable operating temperature. Optionally, the cooling conductor wires are made of copper stranded wire to improve heat conduction efficiency.

[0050] By setting up this high-temperature superconducting magnet cooling structure, on the one hand, the input of external heat to the high-temperature superconducting magnet can be reduced; on the other hand, by making thermally conductive connections with the end face and outer peripheral surface of the double-pane coil 100 in the high-temperature superconducting magnet, it can fully contact the high-temperature superconducting magnet, enhance the heat output, and further reduce the heat input by lowering the temperature of the cooling screen 2. Thus, the temperature control requirements of the high-temperature superconducting magnet can be met when "hot spots" occur or under harsh working conditions.

[0051] Specifically, in this embodiment, such as Figure 1 As shown, in this embodiment, the high-temperature superconducting magnet cooling structure further includes a cold shield flange 55. One end of the conductor stranded wire is connected to the cold shield flange 55, which is fixedly and thermally connected to the inner wall of the cold shield 2. This allows the heat from the cold shield 2 to be transferred to the cold head flange 54 through the cold shield flange 55 and the conductor stranded wire. Preferably, one end of the conductor stranded wire is welded to the cold head flange 54, and the other end is crimped with a copper lug. The copper lug allows for a fixed connection between the conductor stranded wire and the cold shield flange 55, achieving effective heat transfer and avoiding the impact of thermal contraction stress on the cooling structure. Optionally, the aforementioned copper lug is also connected between the conductor stranded wire and the magnet cooling assembly 1.

[0052] Continue to refer to Figures 1 to 3 As shown, in this embodiment, along the axial direction of the main frame 101, both ends of the coil insulating sheet 11 are thermally connected to the end face of a double-panel coil 100, and the coil insulating sheet 11 is provided with a flange portion protruding along the radial direction of the main frame 101. The flange portion can be thermally connected to the cooling sheet 13, thereby increasing the thermal conductivity of the coil insulating sheet 11 and the cooling sheet 13. When individual double-panel coils 100 exhibit phenomena such as "hot spots," due to the large thermal conductivity area between the coil insulating sheet 11 and the cooling sheet 13, heat can be transferred with high efficiency, thereby quickly reducing the temperature of the "hot spots" and maintaining the superconducting state of the double-panel coils 100.

[0053] Preferably, in this embodiment, the main frame 101 is made of a material with high strength and high thermal conductivity, and the outer surface of the main frame 101 is uniformly sprayed with insulating material to form an insulating layer. (Refer to...) Figure 5 As shown, the main frame 101 is a stepped thin-walled shaft. After the coaxial assembly of the double-panel coil 100 is completed, a flange with internal thread needs to be installed at the other end of the main frame 101 to achieve axial compression and fixation of the double-panel coil 100.

[0054] like Figure 4 , Figure 5 As shown, the cooling plate 13 is provided with a relief groove 131 to prevent interference between the cooling plate 13 and the coil insulation plate 11. At the same time, the width and depth of the relief groove 131 are greater than the thickness and width of the flange, so that the flange can extend into the relief groove 131 to increase the thermal conductivity between the coil insulation plate 11 and the cooling plate 13.

[0055] like Figure 3 , Figure 6 As shown, the magnet cooling assembly 1 also includes a frame cooling block 14, with one frame cooling block 14 at each of the axial ends of the main frame 101. The inner side of the frame cooling block 14 is an arc surface, which can be in contact with and thermally connected to the outer peripheral surface of the main frame 101. The frame cooling block 14 is thermally connected to the cold head flange 54 through a cooling strand. The inner peripheral surface of the double-pane coil 100 is also in contact with and thermally connected to the main frame 101. Therefore, in this embodiment, the double-pane coil 100 can be thermally connected to the cold head flange 54 simultaneously through the frame cooling block 14 (main frame 101), the arc-shaped insulating sheet 12, and the coil insulating sheet 11, so that the end face, outer peripheral surface, and inner peripheral surface of the double-pane coil 100 can all be used to output heat, thereby ensuring that the double-pane coil 100 can be at a suitable operating temperature.

[0056] Specifically, the surface of the skeleton cooling block 14 is provided with an insulating layer, which is used to insulate the skeleton cooling block 14, the double-pane coil 100, and the main skeleton 101 to avoid short circuits.

[0057] Furthermore, in this embodiment, the magnet cooling assembly 1 also includes a pull rod 15. The pull rod 15 passes through the cooling plate 13 and the skeleton cooling block 14 along the axial direction of the main frame 101 and is connected with a fastening nut to press the skeleton cooling block 14, the cooling plate 13, the coil insulating plate 11, the arc-shaped insulating plate 12, and the double-panel coil 100 into tight contact, thereby fixing the high-temperature superconducting magnet cooling structure and the high-temperature superconducting magnet in place. Exemplarily, each end of the main frame 101 is connected to two skeleton cooling blocks 14, and each skeleton cooling block 14 is connected to four pull rods 15. The eight pull rods 15 in the main assembly are evenly or symmetrically arranged around the axis of the main frame 101, so that the skeleton cooling blocks 14 can be installed under balanced force.

[0058] Preferably, insulating thermal grease is disposed between the cooling plate 13 and the arc-shaped insulating plate 12, thereby further ensuring the thermal conductivity and thermal conduction area of ​​both. Similarly, in some embodiments, insulating thermal grease may also be disposed between the arc-shaped insulating plate 12 and the double-panel coil 100, between the cooling plate 13 and the coil insulating plate 11, between the skeleton cooling block 14 and the main skeleton 101, and between the double-panel coil 100 and the main skeleton 101. These are all within the scope of protection of this invention.

[0059] The present invention also provides a high-temperature superconducting device, which includes a high-temperature superconducting magnet, a suspension assembly, and the aforementioned high-temperature superconducting magnet cooling structure. Both the suspension assembly and the high-temperature superconducting magnet are disposed within the Dewar 3 of the high-temperature superconducting magnet cooling structure. The suspension assembly connects the high-temperature superconducting magnet, the Dewar 3, and the cold screen 2 to fix the high-temperature superconducting magnet and the cold screen 2 within the Dewar 3.

[0060] Specifically, the suspension assembly includes a magnet suspension rod 41 and a cold screen suspension rod 42, both of which are slender rods with low thermal conductivity and small cross-section. One end of the magnet suspension rod 41 is connected to the inner wall of the Dewar 3, and the other end passes through the cold screen 2 and connects to the magnet cooling assembly 1. One end of the cold screen suspension rod 42 is connected to the Dewar 3, and the other end is connected to the cold screen 2. The suspension assembly can fix the high-temperature superconducting magnet, the cold screen 2, the magnet cooling assembly 1, and the cold head cooling assembly in place, and also reduce the heat transferred to the high-temperature superconducting magnet through the suspension assembly. Optionally, as... Figure 1 As shown, the number of magnet suspension rods 41 and cold screen suspension rods 42 is generally no less than 3, and they are set in a way that reasonably distributes the load to achieve a more stable fixing effect.

[0061] Continue to refer to Figure 1 As shown, in this embodiment, the conductor strands include a first strand 51, a second strand 52, and a third strand 53. The first strand 51 is thermally connected between the cooling plate 13 and the cold head flange 54; the second strand 52 is thermally connected between the skeleton cooling block 14 and the cold head flange 54; and the third strand 53 is thermally connected between the cold screen 2 and the cold head flange 54. Through the first strand 51, the second strand 52, and the third strand 53, the high-temperature superconducting magnet can be cooled by the cooling plate 13 and the skeleton cooling block 14, and the cold screen 2 can be cooled by the third strand 53. Thus, both the high-temperature superconducting magnet and the cold screen 2 can be cooled simultaneously through a single cold head flange 54, further simplifying the structure of the high-temperature superconducting device.

[0062] Furthermore, in this high-temperature superconducting device, by setting up the cooling structure for the high-temperature superconducting magnet, on the one hand, the input of external heat to the high-temperature superconducting magnet can be reduced; on the other hand, by thermally connecting the end face and outer peripheral surface of the double-pane coil 100 in the high-temperature superconducting magnet, it can fully contact the high-temperature superconducting magnet, enhance the heat output, and further reduce the heat input by lowering the temperature of the cooling screen 2, thereby meeting the temperature control requirements of the high-temperature superconducting magnet when "hot spots" occur or under harsh working conditions.

[0063] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cooling structure for a high-temperature superconducting magnet, used to maintain the operating temperature of a high-temperature superconducting magnet, characterized in that, The high-temperature superconducting magnet includes a main frame (101) and a plurality of double-pancake coils (100) arranged along the axial direction of the main frame (101). The cooling structure of the high-temperature superconducting magnet includes: Dewar (3), a vacuum environment can be created inside the Dewar (3), and the high-temperature superconducting magnet can be fixedly installed inside the Dewar (3); A magnet cooling assembly (1) includes an arc-shaped insulating sheet (12), a coil insulating sheet (11), and a cooling sheet (13). The arc-shaped insulating sheet (12) is laid on the outer circumferential surface of the double-pane coil (100) and is thermally connected to the double-pane coil (100). The coil insulating sheet (11) is provided between two adjacent double-pane coils (100), and the end face of the double-pane coil (100) is thermally connected to the coil insulating sheet (11). The cooling sheet (13) is thermally connected to the arc-shaped insulating sheet (12) and the coil insulating sheet (11). The cold head cooling assembly includes a cooling conductor wire and a cold head flange (54). The cold head flange (54) is used for thermally connecting the refrigeration device. The cooling plate (13) is thermally connected through the cooling conductor wire and the cold head flange (54). A cold screen (2) surrounds the high-temperature superconducting magnet, the magnet cooling component (1) and the cold head cooling component, and is disposed between the Dewar (3) and the high-temperature superconducting magnet. The cold screen (2) and the cold head flange (54) are connected by the cooling stranded wire.

2. The high-temperature superconducting magnet cooling structure according to claim 1, characterized in that, The magnet cooling assembly (1) further includes a skeleton cooling block (14). Each of the two ends of the main skeleton (101) is provided with a skeleton cooling block (14). The skeleton cooling block (14) and the double-panel coil (100) are thermally connected. The skeleton cooling block (14) is thermally connected to the cold head flange (54) through the cooling strand.

3. The high-temperature superconducting magnet cooling structure according to claim 2, characterized in that, The inner circumferential surface of the double-pane coil (100) and the outer circumferential surface of the main frame (101) are thermally connected.

4. The high-temperature superconducting magnet cooling structure according to claim 2, characterized in that, The surface of the skeleton cooling block (14) is provided with an insulating layer, which is used to insulate the skeleton cooling block (14) and the double-pane coil (100).

5. The high-temperature superconducting magnet cooling structure according to claim 2, characterized in that, The magnet cooling assembly (1) also includes a pull rod (15), which passes through the cooling plate (13) and the frame cooling block (14) along the axial direction of the main frame (101) and is connected with a fastening nut to press the frame cooling block (14), the cooling plate (13), the coil insulation plate (11), the arc-shaped insulation plate (12) and the double-panel coil (100) into close contact.

6. The high-temperature superconducting magnet cooling structure according to claim 1, characterized in that, Along the axial direction of the main frame (101), the two ends of the coil insulating sheet (11) are thermally connected to the end face of a double-pane coil (100), and the coil insulating sheet (11) is provided with a flange portion protruding along the radial direction of the main frame (101). The flange portion is used to increase the thermal conductivity of the coil insulating sheet (11) and the cooling sheet (13).

7. The high-temperature superconducting magnet cooling structure according to claim 6, characterized in that, The cooling plate (13) is provided with a relief groove (131), which is used to prevent interference between the cooling plate (13) and the coil insulation plate (11). The flange can extend into the relief groove (131) to increase the thermal conductivity between the coil insulation plate (11) and the cooling plate (13).

8. The high-temperature superconducting magnet cooling structure according to claim 2, characterized in that, An insulating thermal grease is disposed between the cooling plate (13) and the arc-shaped insulating plate (12); and / or, An insulating thermal grease is disposed between the arc-shaped insulating sheet (12) and the double-panel coil (100); and / or, An insulating thermal grease is disposed between the cooling sheet (13) and the coil insulating sheet (11); and / or, Insulating thermal grease is provided between the skeleton cooling block (14) and the main skeleton (101).

9. The high-temperature superconducting magnet cooling structure according to claim 2, characterized in that, The cooling conductor includes a first strand (51), a second strand (52), and a third strand (53), wherein, The first strand (51) is thermally connected between the cooling plate (13) and the cold head flange (54), the second strand (52) is thermally connected between the skeleton cooling block (14) and the cold head flange (54), and the third strand (53) is thermally connected between the cold screen (2) and the cold head flange (54).

10. A high-temperature superconducting device, characterized in that, The device includes a high-temperature superconducting magnet, a suspension assembly, and a high-temperature superconducting magnet cooling structure as described in any one of claims 1-9. The suspension assembly and the high-temperature superconducting magnet are both disposed within the Dewar (3) of the high-temperature superconducting magnet cooling structure. The suspension assembly is connected to the high-temperature superconducting magnet, the Dewar (3), and the cold screen (2) of the high-temperature superconducting magnet cooling structure to fix the high-temperature superconducting magnet and the cold screen (2) within the Dewar (3).

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