Winding component for rapid excitation of dry-cooled superconducting magnet and use method thereof

Abstract

The present invention belongs to the technical field of superconducting magnets, and discloses a winding component for rapid excitation of a dry-cooled superconducting magnet, in which the outer wall cold-conducting fins and the inner wall cold-conducting fins of the coil are both strip-shaped arc structures. It is used to conduct cooling to the outer wall and inner wall of the superconducting coil, and is fixed on an insulating cold-conducting plate made of insulating material with high thermal conductivity in conjunction with upper and lower metal pressing blocks with high thermal conductivity, thereby achieving effective fixation of the outer wall cold-conducting fins and the inner wall cold-conducting fins of the coil, ensuring that the inner wall cold-conducting fins of the coil can be deformed in coordination with the superconducting coil during the excitation process without peeling off, and also achieving electrical insulation between the outer wall cold-conducting fins of the coil and the inner wall cold-conducting fins of the coil, solving the problem of cold-conducting failure of the inner wall of the coil during the excitation process and the problem of electrical connection of large-area metal cold-conducting materials, blocking the eddy current induced in the cooling structure of the superconducting magnet during the excitation process, achieving heat conduction between the outer wall cold-conducting fins and the inner wall cold-conducting fins of the coil, and optimizing the cold distribution thereof.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting magnets, in particular to a winding component for rapid excitation of a dry-cooling superconducting magnet and a use method thereof. Background Art

[0002] Compared with conventional conductors, superconductors are the main conductor materials used to generate stable and strong magnetic fields because of their unimpeded current carrying capacity. They are widely used in various fields such as medical treatment, scientific research, transportation, and national defense. Unlike conventional conductors, superconductors must operate below their critical parameters to achieve unimpeded current carrying. The critical temperature of superconductors will decrease with the increase of the background magnetic field and the operating current of the conductor. When the operating temperature of the superconductor is greater than its critical temperature, the superconductor will lose its superconductivity, which is what we usually call quenching. For superconducting magnets, the excitation process is a process of increasing the magnetic field generated by the electromagnetic coil by continuously increasing the operating current of the conductor until it reaches the target magnetic field. The excitation process of superconducting magnets is a process of dynamic change of magnetic field. This magnetic field change will generate heat on the winding components of the superconducting magnet, causing the coil temperature to rise. The faster the excitation rate, the greater the temperature rise. When its temperature is higher than the critical temperature of the superconducting material, the superconducting magnet will quench. Therefore, the excitation process of superconducting magnets itself is a continuous and limited process.

[0003] Dry superconducting magnets rely on refrigerators to cool superconducting coils by heat conduction. Compared with traditional liquid helium immersion cooling magnets, they have not only successfully gotten rid of the constraints of expensive and scarce liquid helium, but also have the advantages of compact structure, convenient operation, high reliability and safety, and have become the main direction of application and development of superconducting magnet systems. However, compared with liquid helium immersion magnets, their refrigeration system has limited cooling capacity and low heat exchange efficiency with superconducting coils. In order to ensure that the superconducting coils do not lose supersonic power during the excitation process, the excitation rate of this type of superconducting magnet is severely limited and extremely slow, which directly leads to serious time waste and low efficiency during the use of this type of superconducting magnet.

[0004] Since the dry superconducting magnet uses a refrigerator to cool the coil by heat conduction, the cooling capacity available to the winding is limited by the maximum cooling capacity that the refrigerator can generate. The heat generated by the winding during the excitation process will increase with the increase of the excitation rate, and it is very easy to exceed the cooling capacity that the refrigerator can provide. At the same time, since its cooling structure is a mechanical connection, the heat exchange efficiency is not high, and the heat generated by the winding during the excitation process cannot be effectively transferred to the refrigeration system in a timely manner. The above two factors will directly lead to a large temperature rise in the superconducting coil during rapid excitation, which will cause the temperature of the superconducting coil to exceed its critical temperature and induce magnet quenching. Summary of the invention

[0005] The object of the present invention is to provide a winding component for rapid excitation of a dry-cooled superconducting magnet to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution:

[0007] A winding component for rapid excitation of a dry-cooled superconducting magnet, comprising a superconducting coil, wherein a plurality of coil inner wall cooling fins are evenly arranged on the inner wall of the superconducting coil along the circumferential direction, a plurality of coil outer wall cooling fins are evenly arranged on the outer wall of the superconducting coil along the circumferential direction, a coil support outer cylinder is symmetrically arranged on the surface of the coil outer wall cooling fins, insulating cooling disks are arranged at both ends of the coil outer wall cooling fins and the coil inner wall cooling fins close to the superconducting coil, both ends of the coil outer wall cooling fins are bent toward the center direction of the insulating cooling disk, and both ends of the coil inner wall cooling fins are bent toward the outer edge direction of the insulating cooling disk, and a lower metal pressing block and an upper metal pressing block are respectively connected to the outer sides of the two insulating cooling disks for pressing the coil outer wall cooling fins and the coil inner wall cooling fins on the outer surface of the insulating cooling disk.

[0008] Further preferably, the coil outer wall cooling fins and the coil inner wall cooling fins are both strip-shaped arc structures, and the coil outer wall cooling fins and the coil inner wall cooling fins are arranged on the outer wall and inner wall of the superconducting coil in a one-to-one correspondence. The coil outer wall cooling fins and the coil inner wall cooling fins are used to cool the outer wall and inner wall of the superconducting coil, and are required to be made of materials with high thermal conductivity, such as high-purity oxygen-free copper or 5N aluminum. The thickness of the coil outer wall cooling fins is less than 5 mm, the thickness of the coil inner wall cooling fins is less than 0.5 mm, and the surface roughness of the coil outer wall cooling fins and the coil inner wall cooling fins are both less than 1.6 μm.

[0009] Further preferably, the bending parts at both ends of the coil outer wall cooling plate and the coil inner wall cooling plate are both tightly attached to the outer edge or inner edge of the insulating cold plate, and after bending, the ends of the coil outer wall cooling plate and the coil inner wall cooling plate are overlapped or butt-connected to the outer surface of the insulating cold plate.

[0010] Further preferably, the axial cross section of the coil support outer cylinder is an I-shaped structure, and the coil support outer cylinder has a smaller diameter and is evenly provided with a plurality of reserved holes on one end surface close to the insulating cold conduction plate, and a connecting bolt is provided inside the reserved hole, and the connecting bolt passes through the positioning hole provided on the surface of the insulating cold conduction plate, and a fixing nut is screwed on the other end of the connecting bolt. Both the connecting bolt and the fixing nut are made of non-magnetic material.

[0011] Further preferably, the two coil support outer cylinders have a larger diameter and are close to each other, and the end surfaces and outer edges thereof are evenly provided with a plurality of axial hoisting holes and radial hoisting holes, and the coil support outer cylinders are made of insulating materials with a certain strength, such as G10 glass fiber and epoxy resin composite materials.

[0012] Further preferably, the surface of the insulating cold plate is evenly provided with a plurality of pressure block connection holes, the surfaces of the lower metal pressure block and the upper metal pressure block are both provided with through holes corresponding to the pressure block connection holes, the through holes are provided with metal pressure block locking bolts, the metal pressure block locking bolts pass through the through holes, the coil outer wall cold plate and the coil inner wall cold plate and are screwed to the pressure block connection holes. The insulating cold plate is made of insulating material with high thermal conductivity at low temperature, such as aluminum nitride, and is integrally processed and formed. The metal pressure block locking bolts are made of non-magnetic material.

[0013] Further preferably, the lower metal pressing block and the upper metal pressing block are fan-shaped as a whole, and transition ears are arranged on the outer sides of the lower metal pressing block and the upper metal pressing block, and a plurality of cooling holes are evenly arranged on the surface of the transition ears. The lower metal pressing block and the upper metal pressing block are made of metal materials with high thermal conductivity, and are used to transfer the cooling energy of the refrigeration system to the cooling fins on the outer wall of the coil and the cooling fins on the inner wall of the coil. The flatness of the crimping surface of the lower metal pressing block and the upper metal pressing block is less than 0.1㎜, and the surface roughness is less than 0.8μm.

[0014] The present invention also provides the following technical solution: a method for using a winding component for rapid excitation of a dry-cooled superconducting magnet, comprising the following steps:

[0015] Step 1, winding the superconducting coil through a mold and demolding it;

[0016] Step 2: Use low-temperature glue to stick the outer wall cooling plate and the inner wall cooling plate of the superconducting coil on the outer wall and the inner wall of the superconducting coil after demoulding respectively;

[0017] Step 3: symmetrically install the coil support outer cylinder on the surface of the cooling fin on the outer wall of the coil, and perform epoxy pouring on the entire component;

[0018] Step 4: Install the insulated cold plate on the end of the coil support outer cylinder away from each other by connecting the bolts, fixing nuts, positioning holes and reserved holes;

[0019] Step 5, bend the ends of the coil outer wall cooling plate and the coil inner wall cooling plate toward the surface of the insulating cooling plate respectively;

[0020] Step 6: Connect the lower metal pressing block and the upper metal pressing block to the insulating cold conducting plates at both ends respectively through the metal pressing block locking bolts, through holes and pressing block connecting holes;

[0021] Step 7: Install the entire component on the cryostat through the axial lifting holes and radial lifting holes.

[0022] Further preferably, when the superconducting coil is wound by a mold and demolded; when the superconducting coil is wound by dry winding, the wound superconducting coil needs to be epoxy poured and then demolded; when the superconducting coil is wound by wet winding, the wound superconducting coil is directly demolded.

[0023] Further preferably, in step 2, the outer wall cooling fins and the inner wall cooling fins of the coil are respectively pasted with low-temperature glue on the outer wall and the inner part of the superconducting coil after demolding; in step 3, the coil support outer cylinder is symmetrically installed on the surface of the coil outer wall cooling fins, and the entire component is epoxy cast; and in step 4, when the insulating cooling plate is installed on the end of the coil support outer cylinder away from each other by connecting bolts, fixing nuts, positioning holes and reserved holes, the coil outer wall cooling fins and the coil inner wall cooling fins are required to be in the expanded state at all times.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] In this component, the outer wall cooling fins and the inner wall cooling fins of the coil are both strip-shaped arc structures, and the outer wall cooling fins and the inner wall cooling fins of the coil are arranged on the outer wall and the inner wall of the superconducting coil in a one-to-one correspondence. The outer wall cooling fins and the inner wall cooling fins of the coil are used to cool the outer wall and the inner wall of the superconducting coil, and are required to be made of materials with high thermal conductivity, and are fixed on an insulating cooling plate made of insulating materials with high thermal conductivity with upper and lower metal pressing blocks with high thermal conductivity, which not only realizes the effective fixation of the outer wall cooling fins and the inner wall cooling fins of the coil, but also realizes electrical insulation between each outer wall cooling fin and the inner wall cooling fin of the coil, fundamentally solving the problem of electrical connection of large-area metal cooling materials, effectively blocking the eddy current induced in the cooling structure during the excitation process of the superconducting magnet, greatly reducing the heat generation of the cooling structure components, and at the same time can also realize heat conduction between each outer wall cooling fin and the inner wall cooling fin of the coil, optimizing its cooling distribution.

[0026] During the excitation process, when the superconducting coil is compressed and deformed under the action of electromagnetic force, the insulating cooling plate will also move with the superconducting coil, which makes the cooling plate on the inner wall of the coil have axial freedom. At the same time, since the inner wall of the cooling plate on the inner wall of the coil is a free interface and is not subject to stress, it also has radial freedom. The above two degrees of freedom ensure that the cooling plate on the inner wall of the coil can deform in coordination with the superconducting coil without peeling off, fundamentally solving the problem of cooling failure in the most vulnerable area of ​​the inner wall of the coil due to deformation of the superconducting coil during the excitation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the insulated cold-conducting plate of the present invention;

[0030] In the figure: 1. superconducting coil; 2. cooling plate on the outer wall of the coil; 3. cooling plate on the inner wall of the coil; 4. outer tube supporting the coil; 5. insulating cooling plate; 6. lower metal pressing block; 7. upper metal pressing block; 8. connecting bolt; 9. fixing nut; 10. metal pressing block locking bolt; 11. pressing block connecting hole; 12. positioning hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-3 , the present invention provides a technical solution:

[0033] A winding component for rapid excitation of a dry-cooled superconducting magnet comprises a superconducting coil 1, wherein a plurality of coil inner wall cooling fins 3 are uniformly arranged on the inner wall of the superconducting coil 1 along the circumferential direction, a plurality of coil outer wall cooling fins 2 are uniformly arranged on the outer wall of the superconducting coil 1 along the circumferential direction, a coil supporting outer cylinder 4 is symmetrically arranged on the surface of the coil outer wall cooling fins 2, insulating cooling plates 5 are arranged at both ends of the coil outer wall cooling fins 2 and the coil inner wall cooling fins 3 close to the superconducting coil 1, both ends of the coil outer wall cooling fins 2 are bent toward the center direction of the insulating cooling plate 5, and both ends of the coil inner wall cooling fins 3 are bent toward the outer edge direction of the insulating cooling plate 5, and the outer sides of the two insulating cooling plates 5 are respectively connected to a lower metal pressing block 6 and an upper metal pressing block 7 for pressing the coil outer wall cooling fins 2 and the coil inner wall cooling fins 3 on the outer surface of the insulating cooling plate 5.

[0034] In the present invention, the coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 are both strip-shaped arc structures, and the coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 are arranged on the outer wall and inner wall of the superconducting coil 1 in a one-to-one correspondence.

[0035] In the present invention, the bending parts at both ends of the coil outer wall cold plate 2 and the coil inner wall cold plate 3 are both in close contact with the outer edge or inner edge of the insulating cold plate 5, and after bending, the ends of the coil outer wall cold plate 2 and the coil inner wall cold plate 3 overlap or butt-jointly connect to the outer surface of the insulating cold plate 5. When the bending parts at both ends of the coil outer wall cold plate 2 are in close contact with the outer edge of the insulating cold plate 5, the bending parts at both ends of the coil inner wall cold plate 3 are in close contact with the inner edge of the insulating cold plate 5, and at this time, the ends of the coil outer wall cold plate 2 and the coil inner wall cold plate 3 are in a state of butt-jointing with each other; when the bending parts at both ends of the coil outer wall cold plate 2 are in close contact with the inner edge of the insulating cold plate 5, the bending parts at both ends of the coil inner wall cold plate 3 are in close contact with the outer edge of the insulating cold plate 5, and at this time, the ends of the coil outer wall cold plate 2 and the coil inner wall cold plate 3 overlap each other.

[0036] In the present invention, the axial cross section of the coil support outer cylinder 4 is an I-shaped structure, and the surface of one end of the coil support outer cylinder 4 with a smaller diameter and close to the insulating cold plate 5 is evenly provided with a plurality of reserved holes, and a connecting bolt 8 is provided inside the reserved hole, and the connecting bolt 8 passes through the positioning hole 12 provided on the surface of the insulating cold plate 5, and the other end of the connecting bolt 8 is screwed with a fixing nut 9. The surfaces and outer edges of the ends of the two coil support outer cylinders 4 with larger diameters and close to each other are evenly provided with a plurality of axial lifting holes and radial lifting holes. Among them, the end of the coil support outer cylinder 4 with a smaller diameter is arranged in a direction away from the axial center of the superconducting coil 1 and close to the insulating cold plate 5, and the end of the coil support outer cylinder 4 with a larger diameter is arranged in a direction close to the axial center of the superconducting coil 1.

[0037] In the present invention, a plurality of pressure block connecting holes 11 are evenly arranged on the surface of the insulating cold plate 5, and through holes corresponding to the pressure block connecting holes 11 are arranged on the surfaces of the lower metal pressure block 6 and the upper metal pressure block 7, and metal pressure block locking bolts 10 are arranged inside the through holes. The metal pressure block locking bolts 10 pass through the through holes, the coil outer wall cold plate 2 and the coil inner wall cold plate 3, and are screwed to the pressure block connecting holes 11.

[0038] In the present invention, the lower metal pressing block 6 and the upper metal pressing block 7 are fan-shaped as a whole, and transition ears are arranged on the outer sides of the lower metal pressing block 6 and the upper metal pressing block 7, and a plurality of cooling holes are evenly arranged on the surface of the transition ears.

[0039] The present invention also provides the following technical solution: a method for using a winding component for rapid excitation of a dry-cooled superconducting magnet, comprising the following steps:

[0040] Step 1, winding a superconducting coil 1 through a mold and demolding it;

[0041] Step 2: Use low-temperature glue to stick the outer wall cooling plate 2 and the inner wall cooling plate 3 of the superconducting coil 1 after demoulding to the outer wall and the inner part of the superconducting coil 1 respectively;

[0042] Step 3, symmetrically install the coil support outer cylinder 4 on the surface of the coil outer wall cooling plate 2, and perform epoxy casting on the entire component;

[0043] Step 4, by connecting the bolts 8 with the fixing nuts 9, the positioning holes 12 and the reserved holes, the insulating cold plate 5 is installed on the end of the coil supporting outer cylinder 4 that is away from each other;

[0044] Step 5, bend the ends of the coil outer wall cooling plate 2 and the coil inner wall cooling plate 3 toward the surface of the insulating cooling plate 5 respectively;

[0045] Step 6, respectively connect the lower metal pressing block 6 and the upper metal pressing block 7 to the insulating cold plate 5 at both ends through the metal pressing block locking bolts 10, the through holes and the pressing block connecting holes 11;

[0046] Step 7: Install the entire component on the cryostat through the axial lifting holes and radial lifting holes.

[0047] In the present invention, the superconducting coil 1 is wound by a mold and demolded; when the superconducting coil 1 is wound by dry winding, the wound superconducting coil 1 needs to be epoxy poured and then demolded; when the superconducting coil 1 is wound by wet winding, the wound superconducting coil 1 is directly demolded.

[0048] In the present invention, in step 2, the outer wall and inner wall of the superconducting coil 1 after demolding are respectively pasted with low-temperature glue on the outer wall and inner wall of the coil; in step 3, the coil support outer cylinder 4 is symmetrically installed on the surface of the outer wall of the coil, and the entire component is epoxy cast; and in step 4, when the insulating cold plate 5 is installed on the end of the coil support outer cylinder 4 away from each other by connecting the bolts 8 in conjunction with the fixing nuts 9, the positioning holes 12 and the reserved holes, the outer wall of the coil The cold plate 2 and the inner wall of the coil are always required to be in an unfolded state. Among them, the outer wall of the coil The cold plate 2 and the inner wall of the coil The cold plate 3 are always in an unfolded state, which means that when the two ends of the outer wall of the coil The cold plate 2 and the inner wall of the coil The cold plate 3 are not bent in steps 2, 3 and 4, the outer wall of the coil The cold plate 2 and the inner wall of the coil The cold plate 3 are in a straight state as a whole.

[0049] Embodiment: First, a superconducting coil 1 is wound through a mold and demolded. The superconducting wire used to make the superconducting coil 1 should have low AC loss to reduce the heat generated by the coil during the excitation process. For NbTi superconducting wire, the best choice of substrate is CuMn substrate, followed by CuNi substrate, and finally Cu substrate; for the selection of core wire diameter, the core wire diameter of CuMn and CuNi superconducting wires is required to be less than 5μm, and the core wire diameter of Cu superconducting wire is required to be less than 3μm; for the selection of torsion pitch, the torsion pitch of CuMn and CuNi superconducting wires is required to be less than 35mm, and the core wire diameter of Cu superconducting wire is required to be less than 20mm; for Nb3Sn superconducting wire, the best choice is bronze method Nb3Sn, followed by internal tin method Nb3Sn. At the same time, according to different winding methods, when the superconducting coil 1 is wound by dry winding, the wound superconducting coil 1 needs to be epoxy poured and then demolded; when the superconducting coil 1 is wound by wet winding, the wound superconducting coil 1 is directly demolded.

[0050] After the superconducting coil 1 is prepared, the outer wall and inner wall of the superconducting coil 1 after demolding are respectively pasted with low-temperature glue on the outer wall of the coil and the inner wall of the coil; the coil support outer cylinder 4 is symmetrically installed on the surface of the outer wall of the coil and the entire component is epoxy cast; when the insulating cold plate 5 is installed on the end of the coil support outer cylinder 4 away from each other by connecting the bolts 8 with the fixing nuts 9 and the positioning holes 12 and the reserved holes, the outer wall of the coil and the inner wall of the coil are required to be always in the unfolded state, and the outer wall of the coil and the inner wall of the coil are both strip-shaped arc structures, and the outer wall of the coil and the inner wall of the coil are arranged one by one on the outer wall and the inner wall of the superconducting coil 1. The outer wall of the coil and the inner wall of the coil are used to conduct cooling to the outer wall and the inner wall of the superconducting coil 1, and are required to be made of materials with high thermal conductivity, such as high-purity oxygen-free copper or 5N aluminum. The thickness of the coil outer wall cooling sheet 2 is less than 5mm, the thickness of the coil inner wall cooling sheet 3 is less than 0.5mm, and the surface roughness of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are both less than 1.6μm. The axial cross section of the coil support outer cylinder 4 is an I-shaped structure, and the coil support outer cylinder 4 has a smaller diameter and is evenly provided with a plurality of reserved holes on the surface of one end close to the insulating cold plate 5, and a connecting bolt 8 is provided inside the reserved hole, and the connecting bolt 8 passes through the positioning hole 12 provided on the surface of the insulating cold plate 5, and the other end of the connecting bolt 8 is screwed with a fixing nut 9. The connecting bolt 8 and the fixing nut 9 are both made of non-magnetic materials.

[0051] Then, the ends of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are bent toward the surface of the insulating cold disk 5 respectively, and the bending parts at both ends of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are both tightly attached to the outer edge or inner edge of the insulating cold disk 5, and after bending, the ends of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are overlapped or butt-connected to the outer surface of the insulating cold disk 5. When the bending parts at both ends of the coil outer wall cooling sheet 2 are tightly attached to the outer edge of the insulating cold disk 5, the bending parts at both ends of the coil inner wall cooling sheet 3 are tightly attached to the inner edge of the insulating cold disk 5, at this time, the ends of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are butt-jointed to each other; when the bending parts at both ends of the coil outer wall cooling sheet 2 are tightly attached to the inner edge of the insulating cold disk 5, the bending parts at both ends of the coil inner wall cooling sheet 3 are tightly attached to the outer edge of the insulating cold disk 5, at this time, the ends of the coil outer wall cooling sheet 2 and the coil inner wall cooling sheet 3 are overlapped to each other. The lower metal pressing block 6 and the upper metal pressing block 7 are connected to the insulating cold plate 5 at both ends respectively through the metal pressing block locking bolts 10, through holes and pressing block connecting holes 11. The lower metal pressing block 6 and the upper metal pressing block 7 are fan-shaped structures as a whole, and transition ears are arranged on the outer sides of the lower metal pressing block 6 and the upper metal pressing block 7. A plurality of cold holes are evenly arranged on the surface of the transition ears, and the cold holes are connected to the external refrigeration system. The lower metal pressing block 6 and the upper metal pressing block 7 are made of metal materials with high thermal conductivity, and are used to transfer the cold of the refrigeration system to the outer wall cold plate 2 of the coil and the inner wall cold plate 3 of the coil. The flatness of the crimping surface of the lower metal pressing block 6 and the upper metal pressing block 7 is less than 0.1㎜, and the surface roughness is less than 0.8μm; finally, the whole component is installed in the low temperature thermostat through a plurality of axial lifting holes and radial lifting holes evenly arranged on the surface and outer edge of the end with a larger diameter and close to each other of the two coil support outer cylinders 4. The coil supporting outer cylinder 4 is made of an insulating material with a certain strength, such as a composite material of G10 glass fiber and epoxy resin.

[0052] In this component, the coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 are both strip-shaped arc structures, and the coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 are arranged on the outer wall and inner wall of the superconducting coil 1 in a one-to-one correspondence. The coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 are used to cool the outer wall and inner wall of the superconducting coil 1, and are required to be made of materials with high thermal conductivity. The upper metal pressing block 7 and the lower metal pressing block 6 with high thermal conductivity are fixed on the insulating cooling plate 5 made of insulating material with high thermal conductivity. Not only the effective fixation of the coil outer wall cooling plates 2 and the coil inner wall cooling plates 3 is achieved, but also electrical insulation is achieved between each coil outer wall cooling plates 2 and each coil inner wall cooling plates 3, fundamentally solving the problem of electrical connectivity of large-area metal cooling materials, effectively blocking eddy currents induced in the cooling structure during the excitation process of the superconducting magnet, greatly reducing the heat generation of the cooling structure components, and at the same time, heat conduction between each coil outer wall cooling plates 2 and each coil inner wall cooling plates 3 can be achieved, thereby optimizing the cooling distribution.

[0053] During the excitation process, when the superconducting coil 1 is compressed and deformed under the action of electromagnetic force, the insulating cooling plate 5 will also move with the superconducting coil 1, which makes the coil inner wall cooling plate 3 have axial freedom. At the same time, since the inner wall of the coil inner wall cooling plate 3 is a free interface and is not subject to stress, it also has radial freedom. The above two degrees of freedom ensure that the coil inner wall cooling plate 3 can be deformed in coordination with the superconducting coil 1 without peeling off, fundamentally solving the problem of cooling failure in the most vulnerable area of ​​the coil inner wall due to the deformation of the superconducting coil 1 during the excitation process.

[0054] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A winding component for rapid excitation of a dry-cooled superconducting magnet, comprising a superconducting coil (1), characterized in that: The inner wall of the superconducting coil (1) is evenly provided with a plurality of coil inner wall cooling fins (3) along the circumferential direction, the outer wall of the superconducting coil (1) is evenly provided with a plurality of coil outer wall cooling fins (2) along the circumferential direction, the surface of the coil outer wall cooling fins (2) is symmetrically provided with a coil support outer cylinder (4) along the axial direction, and both ends of the coil outer wall cooling fins (2) and the coil inner wall cooling fins (3) close to the superconducting coil (1) are provided with insulating cooling disks (5), both ends of the coil outer wall cooling fins (2) are bent toward the center direction of the insulating cooling disk (5), and both ends of the coil inner wall cooling fins (3) are bent toward the outer edge direction of the insulating cooling disk (5), and the outer sides of the two insulating cooling disks (5) are respectively connected to a lower metal pressing block (6) and an upper metal pressing block (7) for pressing the coil outer wall cooling fins (2) and the coil inner wall cooling fins (3) on the outer surface of the insulating cooling disk (5); The coil outer wall cooling fins (2) and the coil inner wall cooling fins (3) are both strip-shaped arc structures, and the coil outer wall cooling fins (2) and the coil inner wall cooling fins (3) are arranged on the outer wall and inner wall of the superconducting coil (1) in a one-to-one correspondence with each other; The bending parts of both ends of the coil outer wall cooling plate (2) and the coil inner wall cooling plate (3) are closely attached to the outer edge or inner edge of the insulating cold plate (5), and after bending, the ends of the coil outer wall cooling plate (2) and the coil inner wall cooling plate (3) are overlapped or butt-connected to the outer surface of the insulating cold plate (5); The surface of the insulating cold plate (5) is also evenly provided with a plurality of pressure block connection holes (11); the surfaces of the lower metal pressure block (6) and the upper metal pressure block (7) are both provided with through holes corresponding to the pressure block connection holes (11); metal pressure block locking bolts (10) are provided inside the through holes; the metal pressure block locking bolts (10) pass through the through holes, the coil outer wall cold plate (2) and the coil inner wall cold plate (3) and are screwed to the pressure block connection holes (11).

2. The winding component for rapid excitation of a dry-cooled superconducting magnet according to claim 1, characterized in that: The axial cross section of the coil support outer cylinder (4) is an I-shaped structure, and the coil support outer cylinder (4) has a smaller diameter and is evenly provided with a plurality of reserved holes on one end surface close to the insulating cold conduction plate (5), and connecting bolts (8) are provided inside the reserved holes. The connecting bolts (8) penetrate the inside of the positioning holes (12) provided on the surface of the insulating cold conduction plate (5), and the other end of the connecting bolt (8) is threadedly connected with a fixing nut (9).

3. The winding component for rapid excitation of a dry-cooled superconducting magnet according to claim 2, characterized in that: A plurality of axial hoisting holes and radial hoisting holes are evenly arranged on the end surfaces and outer edges of the two coil supporting outer cylinders (4) with larger diameters and close to each other.

4. The winding component for rapid excitation of a dry-cooled superconducting magnet according to claim 1, characterized in that: The lower metal pressing block (6) and the upper metal pressing block (7) are integrally fan-shaped structures, and transition ears are arranged on the outer sides of the lower metal pressing block (6) and the upper metal pressing block (7), and a plurality of cooling holes are evenly arranged on the surface of the transition ears.

5. The method for using a winding component for rapid excitation of a dry-cooled superconducting magnet according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1, winding a superconducting coil (1) through a mold and demoulding the coil; Step 2: Using low-temperature glue to adhere the outer wall cooling plate (2) and the inner wall cooling plate (3) of the superconducting coil (1) after demoulding to the outer wall and the inner wall of the superconducting coil (1) respectively; Step 3, symmetrically installing the coil support outer cylinder (4) on the surface of the coil outer wall cooling plate (2), and performing epoxy casting on the entire component; Step 4: Install the insulating cold conduction plate (5) on the end of the coil support outer cylinder (4) away from each other by connecting the bolts (8) with the fixing nuts (9) and the positioning holes (12) and the reserved holes; Step 5, bending the ends of the coil outer wall cooling plate (2) and the coil inner wall cooling plate (3) toward the surface of the insulating cooling plate (5); Step 6: Connect the lower metal pressing block (6) and the upper metal pressing block (7) to the insulating cold conducting plates (5) at both ends respectively through the metal pressing block locking bolts (10), the through holes and the pressing block connecting holes (11); Step 7: Install the entire component on the cryostat through the axial lifting holes and radial lifting holes.

6. The method for using a winding component for rapid excitation of a dry-cooled superconducting magnet according to claim 5, characterized in that: The superconducting coil (1) is wound by a mold and demoulded; when the superconducting coil (1) is wound by dry winding, the wound superconducting coil (1) needs to be epoxy poured and then demoulded; when the superconducting coil (1) is wound by wet winding, the wound superconducting coil (1) is directly demoulded.

7. The method for using a winding component for rapid excitation of a dry-cooled superconducting magnet according to claim 5, characterized in that: In the step 2, the outer wall and inner wall of the superconducting coil (1) are respectively attached with low-temperature adhesive to the outer wall and inner wall of the coil; in the step 3, the coil support outer cylinder (4) is symmetrically installed on the surface of the coil outer wall cooling plate (2), and the entire component is epoxy cast; and in the step 4, the insulating cooling plate (5) is installed on the end of the coil support outer cylinder (4) away from each other by connecting the bolts (8) with the fixing nuts (9) and the positioning holes (12) and the reserved holes, and the coil outer wall cooling plate (2) and the coil inner wall cooling plate (3) are always in the unfolded state.

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