CN119132783B - Winding part for quick excitation of dry cooling superconducting magnet and use method thereof - Google Patents
Winding part for quick excitation of dry cooling superconducting magnet and use method thereof Download PDFInfo
- Publication number
- CN119132783B CN119132783B CN202411585717.7A CN202411585717A CN119132783B CN 119132783 B CN119132783 B CN 119132783B CN 202411585717 A CN202411585717 A CN 202411585717A CN 119132783 B CN119132783 B CN 119132783B
- Authority
- CN
- China
- Prior art keywords
- coil
- cold guide
- wall
- superconducting
- wall cold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The invention belongs to the technical field of superconducting magnets, and discloses a winding part for quick excitation of a dry-type cooling superconducting magnet. The superconducting coil is used for conducting cold to the outer wall and the inner wall of the superconducting coil, and is matched with an upper metal pressing block and a lower metal pressing block with high heat conductivity to be fixed on an insulating cold conducting disc made of insulating materials with high heat conductivity, so that the coil outer wall cold conducting sheet and the coil inner wall cold conducting sheet are effectively fixed, the coil inner wall cold conducting sheet can be deformed in a coordinated manner with the superconducting coil in the excitation process without stripping, electric insulation is realized between the coil outer wall cold conducting sheets and the coil inner wall cold conducting sheets, the problem of cold conducting failure of the coil inner wall in the excitation process and the problem of electric communication of large-area metal cold conducting materials are solved, the eddy current induced in the cold conducting structure by the superconducting magnet in the excitation process is blocked, the heat conduction between the coil outer wall cold conducting sheets and the coil inner wall cold conducting sheets is realized, and the cold distribution of the coil inner wall cold conducting sheets is optimized.
Description
Technical Field
The invention relates to the technical field of superconducting magnets, in particular to a winding part for quick excitation of a dry-type cooling superconducting magnet and a use method thereof.
Background
Compared with the conventional conductor, the superconductor has no-resistance current carrying capacity, is a main conductor material for generating a steady and constant strong magnetic field at present, and is widely applied to various fields of medical treatment, scientific research, transportation, national defense and the like, unlike the conventional conductor, the superconductor needs to run below the critical parameter of the superconductor in order to realize no-resistance current carrying, the critical temperature of the superconductor can be reduced along with the rise of the background magnetic field where the conductor is positioned and the running current of the conductor, and when the running temperature of the superconductor is higher than the critical temperature of the superconductor, the superconductor loses superconductivity, namely the superconductor loses quench. For a superconducting magnet, the excitation process is a process of increasing the magnetic field generated by an electromagnetic coil by continuously increasing the running current of a conductor until the magnetic field reaches a target magnetic field, the excitation process of the superconducting magnet is a process of dynamically changing the magnetic field, heat is generated on winding components of the superconducting magnet by the change of the magnetic field, the temperature of the coil is increased, the faster the excitation speed is, the larger the temperature rise is, and when the temperature is higher than the critical temperature of a superconducting material, the superconducting magnet is quenched, so the excitation process of the superconducting magnet is a continuous and limited process.
Compared with the traditional liquid helium soaking cooling magnet, the dry superconducting magnet not only successfully gets rid of the constraint of liquid helium with high price and short resources, but also has the advantages of compact structure, convenient operation, high reliability and safety and the like, and has become the main direction of the application development of a superconducting magnet system. However, compared with a liquid helium immersed magnet, the cooling system has limited cooling capacity and low heat exchange efficiency with a superconducting coil, so that the superconducting coil is ensured not to quench in the excitation process, the excitation speed of the superconducting magnet is severely limited, the excitation speed is extremely slow, and the problems of serious time waste, low efficiency and the like of the superconducting magnet in the use process are directly caused.
The heat conduction structure of the dry superconducting magnet belongs to mechanical connection, heat exchange efficiency is low, heat generated by the winding in the excitation process cannot be effectively transferred to a refrigerating system in time, and the two factors directly lead the superconducting coil to generate larger temperature rise in the rapid excitation process, and the temperature rise can lead the temperature of the superconducting coil to exceed the critical temperature of the superconducting coil and induce the magnet to quench.
Disclosure of Invention
The present invention aims to provide a winding part for quick excitation of a dry-type cooling superconducting magnet, which solves the problems in the prior art.
In order to achieve the above object, the present invention provides the following technical scheme:
The utility model provides a winding part of quick excitation of dry-type cooling superconducting magnet, includes superconducting coil, superconducting coil inner wall evenly is provided with a plurality of coil inner wall cold guide pieces along circumference, superconducting coil outer wall evenly is provided with a plurality of coil outer wall cold guide pieces along circumference, coil outer wall cold guide piece surface symmetry is provided with the coil and supports the urceolus, coil outer wall cold guide piece and coil inner wall cold guide piece all are provided with insulating cold guide plate near superconducting coil's both ends, coil outer wall cold guide plate's both ends all to the central direction of insulating cold guide plate is buckled, coil inner wall cold guide plate's both ends all to the outside border direction of insulating cold guide plate is buckled, two the insulating cold guide plate outside is connected with lower part metal briquetting and upper portion metal briquetting respectively for compress tightly insulating cold guide plate outside surface's coil outer wall cold guide piece and coil inner wall cold guide plate.
Further preferably, the outer wall cold guide plate and the inner wall cold guide plate are both in strip-shaped arc structures, and the outer wall cold guide plate and the inner wall cold guide plate are arranged on the outer wall and the inner wall of the superconducting coil in one-to-one correspondence with each other. The outer wall and inner wall cooling plates are used for cooling the outer and inner walls of the superconducting coil, and are made of high-heat-conductivity materials, such as high-purity oxygen-free copper or 5N aluminum. Wherein the thickness of the cold guide plate on the outer wall of the coil is less than 5mm, the thickness of the cold guide plate on the inner wall of the coil is less than 0.5mm, and the surface roughness of the cold guide plate on the outer wall of the coil and the surface roughness of the cold guide plate on the inner wall of the coil are less than 1.6 mu m.
Further preferably, the bending parts at the two ends of the coil outer wall cold guide sheet and the coil inner wall cold guide sheet are clung to the outer edge or the inner edge of the insulating cold guide disc, and after bending, the ends of the coil outer wall cold guide sheet and the coil inner wall cold guide sheet are mutually lapped or butt-jointed and connected to the outer side surface of the insulating cold guide disc.
Still preferably, the axial section of the coil supporting outer cylinder is of an i-shaped structure, and a plurality of preformed holes are uniformly formed in the surface of one end of the coil supporting outer cylinder, which is smaller in diameter and close to the insulating cold-conducting disc, and connecting bolts are arranged in the preformed holes, penetrate through the positioning holes in the surface of the insulating cold-conducting disc, and the other ends of the connecting bolts are in threaded connection with fixing nuts. The connecting bolt and the fixing nut are both made of nonmagnetic materials.
Further preferably, a plurality of axial lifting holes and radial lifting holes are uniformly formed on one end surface and the outer edge of the coil supporting outer cylinder, which are larger in diameter and are close to each other. And the coil supporting outer cylinder is made of insulating materials with certain strength, such as G10 glass fiber and epoxy resin composite materials.
Still preferably, the surface of the insulating cold-conducting disc is also uniformly provided with a plurality of press block connecting holes, the surfaces of the lower metal press block and the upper metal press block are respectively provided with through holes corresponding to the press block connecting holes, metal press block locking bolts are arranged in the through holes, and the metal press block locking bolts penetrate through the through holes, the coil outer wall cold-conducting sheet and the coil inner wall cold-conducting sheet and are in threaded connection with the press block connecting holes. The insulating cold-conducting disk is made of insulating material with high heat conductivity at low temperature, and is integrally formed, such as aluminum nitride. The metal press block locking bolt is made of nonmagnetic materials.
Further preferably, the lower metal pressing block and the upper metal pressing block are integrally in a fan-shaped structure, transition lugs are arranged on the outer sides of the lower metal pressing block and the upper metal pressing block, and a plurality of cold guide holes are uniformly formed in the surfaces of the transition lugs. The lower metal pressing block and the upper metal pressing block are made of metal materials with high heat conductivity and are used for transmitting the cold energy of the refrigerating system to the outer wall cold guide plate and the inner wall cold guide plate of the coil. The flatness of the press contact surface of the lower metal pressing block and the upper metal pressing block is less than 0.1mm, and the surface roughness is less than 0.8 mu m.
The invention also provides a technical scheme that the use method of the winding part for quick excitation of the dry-type cooling superconducting magnet comprises the following steps:
Step 1, winding a superconducting coil through a die, and demolding;
step 2, sticking a coil outer wall cold guide sheet and a coil inner wall cold guide sheet on the demoulded superconducting coil outer wall and the demoulded superconducting coil inner wall respectively by using low-temperature adhesives;
Step 3, symmetrically installing coil supporting outer cylinders on the surfaces of the cold guide plates on the outer wall of the coil, and carrying out epoxy casting on the whole part;
Step 4, installing an insulating cold guide disc at one end of the coil support outer cylinder, which is far away from each other, through the cooperation of the connecting bolts, the fixing nuts, the positioning holes and the preformed holes;
Step 5, bending the end parts of the coil outer wall cold guide sheet and the coil inner wall cold guide sheet towards the surface of the insulating cold guide disc respectively;
Step 6, connecting the lower metal press block and the upper metal press block with the insulating cold guide discs at two ends respectively through the metal press block locking bolts, the through holes and the press block connecting holes;
and 7, mounting the whole part on the cryostat through the axial lifting hole and the radial lifting hole.
Further preferably, when the superconducting coil is wound by a mold and is demoulded, epoxy casting is needed for the completed superconducting coil when the superconducting coil is wound by a dry winding mode, then demould is carried out, and when the superconducting coil is wound by a wet winding mode, the completed superconducting coil is demoulded directly.
The step (2) is to symmetrically install a coil support outer cylinder on the surface of the coil outer wall cold guide plate and to perform epoxy casting on the whole part, and the step (4) is to install an insulating cold guide plate at one end of the coil support outer cylinder far away from each other by matching a connecting bolt with a fixing nut, a positioning hole and a reserved hole, wherein the coil outer wall cold guide plate and the coil inner wall cold guide plate are required to be in an unfolding state all the time.
Compared with the prior art, the invention has the beneficial effects that:
The outer wall cold guide sheet and the inner wall cold guide sheet of the coil in the component are of strip-shaped arc structures, and the outer wall cold guide sheet and the inner wall cold guide sheet of the coil are arranged on the outer wall and the inner wall of the superconducting coil in a one-to-one correspondence mode. The coil outer wall cold guide sheet and the coil inner wall cold guide sheet are used for conducting cold for the superconducting coil outer wall and the superconducting coil inner wall, are required to be made of materials with high heat conductivity, are matched with an upper metal pressing block and a lower metal pressing block with high heat conductivity to be fixed on an insulating cold guide disc made of insulating materials with high heat conductivity, so that the coil outer wall cold guide sheet and the coil inner wall cold guide sheet are effectively fixed, electric insulation is realized between the coil outer wall cold guide sheet and the coil inner wall cold guide sheet, the electric conduction problem of large-area metal cold guide materials is fundamentally solved, vortex induced in the cold guide structure in the excitation process of the superconducting magnet is effectively blocked, heating of cold guide structural components is greatly reduced, heat conduction between the coil outer wall cold guide sheet and the coil inner wall cold guide sheet can be realized, and cold distribution of the coil inner wall cold guide sheet is optimized.
When the superconducting coil is subjected to compression deformation under the action of electromagnetic force in the excitation process, the insulating cold guide disc moves along with the superconducting coil, so that the inner wall cold guide sheet of the coil has axial freedom degrees, and meanwhile, the inner wall of the inner wall cold guide sheet of the coil is a free interface and is not stressed, so that the inner wall cold guide sheet of the coil also has radial freedom degrees, the two freedom degrees ensure that the inner wall cold guide sheet of the coil can be subjected to coordinated deformation along with the superconducting coil and cannot be peeled off, and the problem that the inner wall of the coil is most prone to quenching zone cold guide failure caused by deformation of the superconducting coil in the excitation process is fundamentally solved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of an insulating cold plate according to the present invention;
In the figure, a superconducting coil, a coil outer wall cold guide sheet, a coil inner wall cold guide sheet, a coil supporting outer cylinder, an insulating cold guide disk, a lower metal press block, a 7 upper metal press block, a 8 connecting bolt, a 9 fixing nut, a 10 metal press block locking bolt, a 11 press block connecting hole, a 12 positioning hole are arranged.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, the present invention provides a technical solution:
The utility model provides a winding part of quick excitation of dry-type cooling superconducting magnet, including superconducting coil 1, superconducting coil 1 inner wall evenly is provided with a plurality of coil inner wall cold guide piece 3 along circumference, superconducting coil 1 outer wall evenly is provided with a plurality of coil outer wall cold guide piece 2 along circumference, coil outer wall cold guide piece 2 surface symmetry is provided with coil support urceolus 4, coil outer wall cold guide piece 2 and coil inner wall cold guide piece 3 are close to superconducting coil 1's both ends all are provided with insulating cold guide plate 5, both ends of coil outer wall cold guide piece 2 are all buckled to insulating cold guide plate 5's central direction, both ends of coil inner wall cold guide piece 3 are all buckled to insulating cold guide plate 5's outside border direction, two insulating cold guide plate 5 outsides are connected with lower metal briquetting 6 and upper portion metal briquetting 7 respectively, be used for compressing tightly insulating cold guide plate 5 outside surface's coil outer wall cold guide piece 2 and coil inner wall cold guide piece 3.
In the invention, the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are in strip-shaped arc structures, and the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are arranged on the outer wall and the inner wall of the superconducting coil 1 in one-to-one correspondence.
In the invention, the bending parts at the two ends of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are clung to the outer edge or the inner edge of the insulating cold guide disc 5, and the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 after bending are mutually lapped or butt-jointed and connected to the outer side surface of the insulating cold guide disc 5. When the bending parts at the two ends of the coil outer wall cold guide sheet 2 are clung to the outer edge of the insulating cold guide disc 5, the bending parts at the two ends of the coil inner wall cold guide sheet 3 are clung to the inner edge of the insulating cold guide disc 5, a state is formed in which the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are mutually butted, and when the bending parts at the two ends of the coil outer wall cold guide sheet 2 are clung to the inner edge of the insulating cold guide disc 5, the bending parts at the two ends of the coil inner wall cold guide sheet 3 are clung to the outer edge of the insulating cold guide disc 5, and a state is formed in which the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are mutually overlapped.
In the invention, the axial cross section of the coil supporting outer cylinder 4 is of an I-shaped structure, a plurality of reserved holes are uniformly formed in the surface of one end, close to the insulating cold guide plate 5, of the coil supporting outer cylinder 4, connecting bolts 8 are arranged in the reserved holes, the connecting bolts 8 penetrate through positioning holes 12 formed in the surface of the insulating cold guide plate 5, and fixing nuts 9 are screwed at the other ends of the connecting bolts 8. The two coil support outer cylinders 4 are large in diameter, and a plurality of axial lifting holes and radial lifting holes are uniformly formed in one end surface and the outer edge of each coil support outer cylinder, which are close to each other. Wherein, the smaller one end of coil support urceolus 4 diameter sets up in the direction that is close to insulating cold guide dish 5 that keeps away from superconducting coil 1 axial center department, and the bigger one end of coil support urceolus 4 diameter sets up in the direction that is close to superconducting coil 1 axial center department.
In the invention, a plurality of press block connecting holes 11 are uniformly formed on the surface of the insulating cold guide plate 5, through holes corresponding to the press block connecting holes 11 are formed on the surfaces of the lower metal press block 6 and the upper metal press block 7, metal press block locking bolts 10 are arranged in the through holes, and the metal press block locking bolts 10 penetrate through the through holes, the coil outer wall cold guide plate 2 and the coil inner wall cold guide plate 3 and are in threaded connection with the press block connecting holes 11.
In the invention, the lower metal press block 6 and the upper metal press block 7 are of a fan-shaped structure as a whole, transition lugs are arranged on the outer sides of the lower metal press block 6 and the upper metal press block 7, and a plurality of cold guide holes are uniformly arranged on the surfaces of the transition lugs.
The invention also provides a technical scheme that the use method of the winding part for quick excitation of the dry-type cooling superconducting magnet comprises the following steps:
Step 1, winding a superconducting coil 1 through a die, and demolding;
Step 2, sticking a coil outer wall cold guide sheet 2 and a coil inner wall cold guide sheet 3 on the outer wall and the inner wall of the demoulded superconducting coil 1 by using low-temperature adhesives respectively;
Step 3, symmetrically installing coil supporting outer cylinders 4 on the surfaces of the coil outer wall cooling guide plates 2, and carrying out epoxy casting on the whole part;
Step 4, installing the insulating cold guide disc 5 at one end of the coil support outer cylinder 4 far away from each other through the connecting bolt 8 matched with the fixing nut 9, the positioning hole 12 and the reserved hole;
Step 5, bending the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 towards the surface of the insulating cold guide disc 5 respectively;
step 6, connecting the lower metal press block 6 and the upper metal press block 7 with the insulating cold guide plates 5 at two ends respectively through the metal press block locking bolts 10, the through holes and the press block connecting holes 11;
and 7, mounting the whole part on the cryostat through the axial lifting hole and the radial lifting hole.
In the invention, when the superconducting coil 1 is wound by a mould and is demoulded, when the superconducting coil 1 is wound by a dry winding mode, the wound superconducting coil 1 needs to be subjected to epoxy casting and then demoulded, and when the superconducting coil 1 is wound by a wet winding mode, the wound superconducting coil 1 is directly demoulded.
In the invention, the outer wall and the inside of a demoulded superconducting coil 1 are respectively and correspondingly stuck with a coil outer wall cold guide sheet 2 and a coil inner wall cold guide sheet 3 by using low-temperature adhesives, the coil outer wall cold guide sheet 2 is symmetrically provided with a coil support outer cylinder 4 on the surface of the coil outer wall cold guide sheet 2, the whole part is subjected to epoxy casting, and the insulating cold guide disc 5 is arranged at one end of the coil support outer cylinder 4 far away from each other by matching a connecting bolt 8 with a fixing nut 9, a positioning hole 12 and a reserved hole, wherein the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are required to be in an unfolding state all the time. The fact that the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are in an unfolded state all the time means that the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are in a straight line state when both ends of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are not bent in the steps 2,3 and 4.
In the embodiment, the superconducting coil 1 is first wound by a die, and then is demolded. The superconducting wire of the superconducting coil 1 should have low alternating current loss to reduce the heating value of the coil in the excitation process, the choice of the substrate is most preferably a CuMn substrate, next a CuNi substrate and finally a Cu substrate for NbTi superconducting wire, the choice of the core wire diameter is preferably a bronze Nb 3 Sn, next an internal tin Nb 3 Sn for Nb 3 Sn for CuMn substrate and CuNi substrate superconducting wire, the core wire diameter is preferably less than 5 μm for Cu substrate superconducting wire, the core wire diameter is preferably less than 3 μm for Cu substrate superconducting wire, the torsion pitch is preferably less than 35mm for CuMn substrate and CuNi substrate superconducting wire, and the core wire diameter is preferably less than 20mm for Cu substrate superconducting wire. Meanwhile, according to different winding methods, when the superconducting coil 1 is wound in a dry winding manner, epoxy casting is required to be performed on the completed superconducting coil 1, and then demoulding is performed, and when the superconducting coil 1 is wound in a wet winding manner, the completed superconducting coil 1 is directly demoulded.
After the preparation of the superconducting coil 1 is completed, the outer wall and the inner part of the demoulded superconducting coil 1 are respectively and correspondingly stuck with a coil outer wall cold guide sheet 2 and a coil inner wall cold guide sheet 3 by using low-temperature adhesives, a coil support outer cylinder 4 is symmetrically arranged on the surface of the coil outer wall cold guide sheet 2 and epoxy casting is carried out on the whole part, when an insulating cold guide disc 5 is arranged at one end of the coil support outer cylinder 4 far away from each other through a connecting bolt 8 in cooperation with a fixing nut 9, a positioning hole 12 and a reserved hole, the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are required to be in an unfolding state all the time, the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are of strip-shaped arc structures, and the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are arranged on the outer wall and the inner wall of the superconducting coil 1 in a one-to-one correspondence mode. The outer wall cold guide plate 2 and the inner wall cold guide plate 3 are used for guiding cold to the outer wall and the inner wall of the superconducting coil 1, and are required to be made of materials with high heat conductivity, such as high-purity oxygen-free copper or 5N aluminum. Wherein the thickness of the coil outer wall cold guide sheet 2 is less than 5mm, the thickness of the coil inner wall cold guide sheet 3 is less than 0.5mm, and the surface roughness of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 is less than 1.6 mu m. The axial cross section of the coil support outer cylinder 4 is of an I-shaped structure, a plurality of reserved holes are uniformly formed in the surface of one end, close to the insulating cold guide plate 5, of the coil support outer cylinder 4, connecting bolts 8 are arranged in the reserved holes, the connecting bolts 8 penetrate through the positioning holes 12 formed in the surface of the insulating cold guide plate 5, and fixing nuts 9 are screwed at the other ends of the connecting bolts 8. The connecting bolt 8 and the fixing nut 9 are both made of nonmagnetic materials.
And then bending the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 towards the surface of the insulating cold guide disc 5 respectively, wherein the bending parts of the two ends of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are clung to the outer edge or the inner edge of the insulating cold guide disc 5, the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 after bending are mutually lapped or butt-jointed and connected with the outer side surface of the insulating cold guide disc 5, when the bending parts of the two ends of the coil outer wall cold guide sheet 2 are clung to the outer edge of the insulating cold guide disc 5, the bending parts of the two ends of the coil inner wall cold guide sheet 3 are clung to the inner edge of the insulating cold guide disc 5, and the mutually lapped state of the end parts of the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 is formed. The lower metal press block 6 and the upper metal press block 7 are respectively connected with the insulating cold guide plates 5 at two ends through the metal press block locking bolts 10, the through holes and the press block connecting holes 11. The lower metal pressing block 6 and the upper metal pressing block 7 are integrally in a fan-shaped structure, transition lugs are arranged on the outer sides of the lower metal pressing block 6 and the upper metal pressing block 7, a plurality of cold guide holes are uniformly formed in the surfaces of the transition lugs, and the cold guide holes are connected to an external refrigerating system. The lower metal pressing block 6 and the upper metal pressing block 7 are made of metal materials with high heat conductivity and are used for transmitting the cold energy of a refrigerating system to the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3. The flatness of the press contact surfaces of the lower metal pressing block 6 and the upper metal pressing block 7 is smaller than 0.1mm, the surface roughness is smaller than 0.8 mu m, and finally the whole part is installed on the cryostat through a plurality of axial lifting holes and radial lifting holes which are respectively and uniformly arranged on the surface and the outer edge of one end of the two coil supporting outer cylinders 4 which are larger in diameter and are close to each other. And the coil supporting outer cylinder 4 is made of an insulating material with certain strength, such as a G10 glass fiber and epoxy resin composite material.
The outer wall of the coil in the component is provided with a cold guide sheet 2 and the inner wall of the coil is provided with a cold guide sheet 3 which are in a strip-shaped arc structure, and the outer wall of the coil is provided with the cold guide sheet 2 and the inner wall of the coil is provided with the cold guide sheet 3 which are in one-to-one correspondence with each other and are arranged on the outer wall and the inner wall of the superconducting coil 1. The coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are used for conducting cold to the outer wall and the inner wall of the superconducting coil 1, are required to be made of materials with high heat conductivity, and are matched with an upper metal pressing block 7 and a lower metal pressing block 6 with high heat conductivity to be fixed on an insulating cold guide disc 5 made of insulating materials with high heat conductivity, so that the coil outer wall cold guide sheet 2 and the coil inner wall cold guide sheet 3 are effectively fixed, electric insulation between the coil outer wall cold guide sheets 2 and the coil inner wall cold guide sheet 3 is realized, the problem of electric conduction of large-area metal cold guide materials is fundamentally solved, eddy currents induced in the cold guide structure in the excitation process of the superconducting magnet are effectively blocked, heating of cold guide structural components is greatly reduced, meanwhile, heat conduction between the coil outer wall cold guide sheets 2 and the coil inner wall cold guide sheet 3 can be realized, and cold distribution of the coil inner wall cold guide sheets is optimized.
When the superconducting coil 1 is subjected to compression deformation under the action of electromagnetic force in the excitation process, the insulating cold guide disc 5 moves along with the superconducting coil 1, so that the inner wall cold guide sheet 3 of the coil has axial freedom degrees, and meanwhile, the inner wall of the inner wall cold guide sheet 3 of the coil is a free interface and is not stressed, so that the inner wall cold guide sheet 3 of the coil also has radial freedom degrees, the two freedom degrees ensure that the inner wall cold guide sheet 3 of the coil can be subjected to coordinated deformation along with the superconducting coil 1 and cannot be peeled off, and the problem that the inner wall of the coil is most prone to quenching region cold guide failure caused by deformation of the superconducting coil 1 in the excitation process is fundamentally solved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. The winding part for quick excitation of the dry-type cooling superconducting magnet comprises a superconducting coil (1), and is characterized in that a plurality of coil inner wall cold guide plates (3) are uniformly arranged on the inner wall of the superconducting coil (1) along the circumferential direction, a plurality of coil outer wall cold guide plates (2) are uniformly arranged on the outer wall of the superconducting coil (1) along the circumferential direction, coil support outer cylinders (4) are symmetrically arranged on the surfaces of the coil outer wall cold guide plates (2) along the axial direction, insulating cold guide plates (5) are respectively arranged at two ends, close to the superconducting coil (1), of the coil outer wall cold guide plates (2) and the coil inner wall cold guide plates (3), both ends of the coil outer wall cold guide plates (2) are bent towards the central direction of the insulating cold guide plates (5), both ends of the coil inner wall cold guide plates (3) are bent towards the outer side edge direction of the insulating cold guide plates (5), and the outer sides of the two insulating cold guide plates (5) are respectively connected with a lower metal pressing block (6) and an upper metal pressing block (7) which are used for pressing the coil inner wall cold guide plates (2) on the surfaces of the outer side of the insulating cold guide plates (5);
The coil outer wall cold guide plates (2) and the coil inner wall cold guide plates (3) are of strip-shaped arc structures, and the coil outer wall cold guide plates (2) and the coil inner wall cold guide plates (3) are arranged on the outer wall and the inner wall of the superconducting coil (1) in a one-to-one correspondence manner;
The bending parts at the two ends of the coil outer wall cold guide sheet (2) and the coil inner wall cold guide sheet (3) are clung to the outer edge or the inner edge of the insulating cold guide disc (5), and the end parts of the coil outer wall cold guide sheet (2) and the coil inner wall cold guide sheet (3) after bending are mutually lapped or butt-jointed and connected to the outer side surface of the insulating cold guide disc (5);
The insulating cold guide plate (5) surface still evenly is provided with a plurality of briquetting connecting holes (11), lower part metal briquetting (6) and upper portion metal briquetting (7) surface all be provided with briquetting connecting hole (11) each other correspond the through-hole, the inside metal briquetting lock bolt (10) that is provided with of through-hole, metal briquetting lock bolt (10) run through-hole, coil outer wall cold guide piece (2) and coil inner wall cold guide piece (3) spiro union in briquetting connecting hole (11).
2. The winding part for rapid excitation of a dry-type cooling superconducting magnet according to claim 1, wherein the axial cross section of the coil supporting outer cylinder (4) is of an I-shaped structure, a plurality of reserved holes are uniformly formed in the surface of one end, close to the insulating cold guide plate (5), of the coil supporting outer cylinder (4), connecting bolts (8) are arranged in the reserved holes, the connecting bolts (8) penetrate through the positioning holes (12) formed in the surface of the insulating cold guide plate (5), and fixing nuts (9) are screwed to the other end of the connecting bolts (8).
3. A rapidly excited winding assembly of a dry cooling superconducting magnet according to claim 2, wherein a plurality of axial lifting holes and radial lifting holes are uniformly formed on one end surface and the outer edge of the two coil supporting outer cylinders (4) which are larger in diameter and are close to each other.
4. The winding part for rapid excitation of a dry cooling superconducting magnet according to claim 1, wherein the lower metal pressing block (6) and the upper metal pressing block (7) are integrally in a fan-shaped structure, transition lugs 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 uniformly formed in the surfaces of the transition lugs.
5. A method of using a rapidly exciting winding part of a dry cooled superconducting magnet according to any one of claims 1-4, comprising the steps of:
Step 1, winding a superconducting coil (1) through a die, and demolding;
Step 2, adhering a coil outer wall cold guide sheet (2) and a coil inner wall cold guide sheet (3) on the outer wall and the inner wall of the demoulded superconducting coil (1) by using low-temperature adhesives respectively;
Step 3, symmetrically installing coil supporting outer cylinders (4) on the surfaces of the coil outer wall cold guide plates (2), and carrying out epoxy casting on the whole part;
Step 4, installing an insulating cold guide disc (5) at one end of the coil support outer cylinder (4) far away from each other through a connecting bolt (8) matched with a fixing nut (9), a positioning hole (12) and a reserved hole;
Step 5, bending the end parts of the coil outer wall cold guide sheet (2) and the coil inner wall cold guide sheet (3) towards the surface of the insulating cold guide disc (5) respectively;
step 6, connecting the lower metal press block (6) and the upper metal press block (7) with the insulating cold guide discs (5) at two ends respectively through the metal press block locking bolts (10), the through holes and the press block connecting holes (11);
and 7, mounting the whole part on the cryostat through the axial lifting hole and the radial lifting hole.
6. The method of using a rapidly excited winding part of a dry-cooled superconducting magnet according to claim 5, wherein the mold is used for winding the superconducting coil (1) and demolding, when the superconducting coil (1) is wound by dry winding, the wound superconducting coil (1) needs to be subjected to epoxy casting and then demolding, and when the superconducting coil (1) is wound by wet winding, the wound superconducting coil (1) is directly demolded.
7. The method for using the winding component for rapidly exciting the dry-type cooling superconducting magnet according to claim 5, wherein the step 2 is characterized in that the coil outer wall cold guide plate (2) and the coil inner wall cold guide plate (3) are respectively adhered to the outer wall and the inner wall of the demoulded superconducting coil (1) by using low-temperature adhesives, the step 3 is that the coil outer wall cold guide plate (2) is symmetrically provided with the coil support outer cylinder (4) on the surface, epoxy casting is carried out on the whole component, and the step 4 is carried out, when the insulating cold guide plate (5) is arranged at one end of the coil support outer cylinder (4) far away from each other through the connecting bolt (8) in a matching mode, and the coil outer wall cold guide plate (2) and the coil inner wall cold guide plate (3) are all required to be in an unfolding state all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411585717.7A CN119132783B (en) | 2024-11-08 | 2024-11-08 | Winding part for quick excitation of dry cooling superconducting magnet and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411585717.7A CN119132783B (en) | 2024-11-08 | 2024-11-08 | Winding part for quick excitation of dry cooling superconducting magnet and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119132783A CN119132783A (en) | 2024-12-13 |
| CN119132783B true CN119132783B (en) | 2025-02-11 |
Family
ID=93750051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411585717.7A Active CN119132783B (en) | 2024-11-08 | 2024-11-08 | Winding part for quick excitation of dry cooling superconducting magnet and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119132783B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136915A (en) * | 2019-06-10 | 2019-08-16 | 杭州慧翔电液技术开发有限公司 | A superconducting magnet and magnetron CZ single crystal device |
| CN114678184A (en) * | 2022-03-17 | 2022-06-28 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | A conduction cooling mixed Nb3Sn high-field superconducting magnet and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5970945B2 (en) * | 2012-05-09 | 2016-08-17 | 三菱電機株式会社 | Superconducting coil, superconducting coil device, and superconducting coil manufacturing method |
| CN117649993A (en) * | 2024-01-18 | 2024-03-05 | 陕西星环聚能科技有限公司 | High-temperature superconductive Helmholtz magnet coil |
| CN220913996U (en) * | 2024-04-08 | 2024-05-07 | 西安聚能超导磁体科技有限公司 | Conduction cooling type superconducting magnet structure for ion source |
-
2024
- 2024-11-08 CN CN202411585717.7A patent/CN119132783B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136915A (en) * | 2019-06-10 | 2019-08-16 | 杭州慧翔电液技术开发有限公司 | A superconducting magnet and magnetron CZ single crystal device |
| CN114678184A (en) * | 2022-03-17 | 2022-06-28 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | A conduction cooling mixed Nb3Sn high-field superconducting magnet and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119132783A (en) | 2024-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109545539B (en) | A method for making a skeleton-free niobium three-tin superconducting coil | |
| CN113053613B (en) | A conduction-cooled high-temperature superconducting electric suspension magnet structure | |
| CN104240939A (en) | Framework for winding superconducting coil and winding method | |
| CN119132783B (en) | Winding part for quick excitation of dry cooling superconducting magnet and use method thereof | |
| CN206541687U (en) | A kind of superconducting coil directly cooled down | |
| CN109686528B (en) | High-temperature superconducting energy storage magnet device | |
| CN113555182B (en) | Superconducting coil and method of manufacture | |
| CN117438171A (en) | A high-reliability internally reinforced composite copper foil high-energy high-field coil and its production method | |
| CN117854877A (en) | Superconducting magnet for magnetic control Czochralski single crystal and refrigerating method | |
| Asano et al. | Cu-Ag wire pulsed magnets with and without internal reinforcements | |
| CN216818069U (en) | Interturn insulation layer of plate-type structure coil | |
| Kosaki et al. | Development of extruded polymer insulated superconducting cable | |
| CN114678184B (en) | Conduction cooling mixed Nb3Sn high-field superconducting magnet and preparation method thereof | |
| Yamamoto et al. | A thin superconducting solenoid wound with the internal winding method for colliding beam experiments | |
| Ballarino | Application of high temperature superconductors to accelerators | |
| CN106710778B (en) | A kind of superconducting coil directly cooled down and cooling means | |
| CN115188555A (en) | Design of a large-size superconducting double-cake coil bobbin | |
| Inoue et al. | High-field installations at the Tsukuba magnet laboratories of NRIM | |
| Vialle et al. | A high performance insulated REBCO pancake with conductive cooling capability | |
| CN114267528A (en) | Interturn insulation layer of plate-type structure coil and preparation method thereof | |
| Devred et al. | Development of a Nb/sub 3/Sn quadrupole magnet model | |
| CN221708531U (en) | A transformer coil | |
| Portone et al. | Conceptual design of the 12.5 T superconducting EFDA dipole | |
| JP3195874B2 (en) | Superconducting coil device and method of manufacturing the same | |
| CN114360846B (en) | Multi-coil combined high-field superconducting magnet and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |