CN112837883B - Superconducting magnet system - Google Patents
Superconducting magnet system Download PDFInfo
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- CN112837883B CN112837883B CN202011626898.5A CN202011626898A CN112837883B CN 112837883 B CN112837883 B CN 112837883B CN 202011626898 A CN202011626898 A CN 202011626898A CN 112837883 B CN112837883 B CN 112837883B
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
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- 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
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Abstract
The invention relates to the technical field of superconducting magnets, and discloses a superconducting magnet system, which comprises: the Dewar structure is internally provided with a sealed cavity; the superconducting magnet is arranged in the sealed cavity and comprises a cylinder body and superconducting coils, the two ends of the cylinder body are connected with a first coil end plate and a second coil end plate, and the superconducting coils are wound on the cylinder body; the cooling device penetrates through the Dewar structure, extends in the sealed cavity and is in contact with the superconducting magnet, and is used for cooling the superconducting magnet; the cooling device includes: the refrigerator, lead cold drawing, lead cold coil, lead cold strip through the both sides edge with superconducting coil in leading cold coil for every layer of superconducting tape of coiling on the barrel all contacts with leading cold coil, has promoted superconducting coil and the conduction area who leads cold coil greatly, has promoted the cooling rate of refrigerator to the superconducting magnet.
Description
Technical Field
The invention relates to the technical field of superconducting magnets, in particular to a superconducting magnet system.
Background
In recent years, the superconducting technology is rapidly developed in various industries, and particularly in the field of high-temperature superconducting technology, in order to realize high-power rapid heating of a workpiece, a low-temperature environment is required to realize the magnet under the superconducting critical condition. In the prior art, a stable low-temperature environment is required for the operation of a superconducting magnet, and the low-temperature environment for the operation of the superconducting magnet mainly has three modes: low-temperature liquid soaking cooling, recondensing cooling and refrigerator conduction cooling. The liquid immersion cooling mainly uses liquid helium or liquid nitrogen as an immersion medium, but the method needs professional transportation and tank filling operation, increases the complexity of system application, is influenced by factors such as international helium resource limit production and the like, and the price of the liquid helium continuously rises, so that the application cost of the system is increased, and further the application of the liquid immersion cooling mode is limited.
At present, a cooling mode conducted by a refrigerator is often applied to a low-power superconducting induction heating device with a small volume and few turns of a coil, and the reason is that the contact area between a conduction piece and a magnet coil is small in the cooling mode conducted by the refrigerator, so that the cooling rate is low when the cooling mode is applied to the superconducting induction heating device with a large number of turns and high power.
Disclosure of Invention
The invention provides a superconducting magnet system, which aims to solve the problem of slow cooling rate caused by small contact area of a conducting piece and a magnet coil in a cooling mode of refrigerator conduction in the prior art.
In order to achieve the above object, in some embodiments of the present application, there is provided a superconducting magnet system including: the device comprises a Dewar structure, a sealing cavity and a sealing cover, wherein a sealing cavity is formed in the Dewar structure; the superconducting magnet is arranged in the sealed cavity and comprises a barrel body and the superconducting coil, a first coil end plate and a second coil end plate are connected to two ends of the barrel body, and the superconducting coil is wound on the barrel body; the cooling device penetrates through the Dewar structure, extends in the sealed cavity and is in contact with the superconducting magnet, and is used for cooling the superconducting magnet; wherein the cooling device includes: the refrigerator is arranged outside the Dewar structure, and a refrigerating head of the refrigerator penetrates through the Dewar structure and extends into the sealed cavity; the cold guide plate is connected to the refrigerating head and is arranged on the first coil end plate; the cold conduction coil is sleeved on the barrel, and the superconducting coil is in contact with the cold conduction coil; and the cold guide strip is connected to the cold guide plate and the cold guide coil.
In some embodiments of the present application, the cold conduction coil is configured to exchange heat on the refrigeration head and the superconducting coil through the cold conduction plate and the cold conduction bar.
In some embodiments of the present application, the cold conducting plate has a plate-shaped arc structure, or a ring structure; the outer side edge of the cold conducting plate is flush with the outer side edge of the first coil end plate.
In some embodiments of the present application, the number of the cold conduction coils is set to be a plurality of, the outer surface of the cylinder body is formed with a winding groove between the cold conduction coils, the superconducting coils are wound in the winding groove, and the edges of the two sides of the superconducting coils are all contacted with the cold conduction coils.
In some embodiments of the present application, the superconducting magnet system comprises: the fasteners penetrate through the cold conduction coil, the first coil end plate and the second coil end plate; the limiting part is sleeved on the fastener and is connected and attached to the cold conduction coil, the first coil end plate and the second coil end plate so as to limit the width of the winding slot.
In some embodiments of the present application, the superconducting magnet system comprises: a first tie rod assembly connected between the bottom of the sealed cavity and the second coil end plate; the second pull rod assembly penetrates through the cold conduction coil, the first coil end plate and the second coil end plate, is connected to the top of the sealed cavity, and is used for limiting the superconducting magnet to be in contact with the inner wall of the sealed cavity.
In some embodiments of the present application, the second tie rod assembly is disposed through the cold conduction plate; the first pull rod assembly comprises a pull rod and two seat bodies, the pull rod is rotationally connected between the two seat bodies, and the two seat bodies are respectively connected to the second coil end plate and the bottom of the sealed cavity.
In some embodiments of the present application, the superconducting magnet system comprises: the supporting ring is connected to the first coil end plate, the second pull rod assembly penetrates through the supporting ring, and the refrigerator penetrates through the supporting ring.
In some embodiments of the present application, the cold-conductive coil comprises: first lead cold coil, second lead cold coil, third lead cold coil, fourth lead cold coil, fifth lead cold coil and sixth lead cold coil, first lead cold coil laminate in first coil end plate, the second lead cold coil laminate in the second coil end plate, the third lead cold coil with the fourth lead cold coil laminates each other, just the third lead cold coil with the fourth lead cold coil is located first lead cold coil with between the second lead cold coil, the fifth lead cold coil with the sixth lead cold coil laminates each other, just the fifth lead cold coil with the sixth lead cold coil is located the fourth lead cold coil with between the second lead cold coil.
In some embodiments of the present application, the cold conducting bar is connected to the first cold conducting coil, the third cold conducting coil, the fourth cold conducting coil, the fifth cold conducting coil and the sixth cold conducting coil; the number of the cold guide strips is set to be a plurality.
In some embodiments of the present application, there is provided a superconducting magnet system comprising: the device comprises a Dewar structure, a sealing cavity and a sealing cover, wherein a sealing cavity is formed in the Dewar structure; the superconducting magnet is arranged in the sealed cavity and comprises a barrel body and the superconducting coil, a first coil end plate and a second coil end plate are connected to two ends of the barrel body, and the superconducting coil is wound on the barrel body; the cooling device penetrates through the Dewar structure, extends in the sealed cavity and is in contact with the superconducting magnet, and is used for cooling the superconducting magnet; wherein the cooling device comprises: the refrigerator is arranged outside the Dewar structure, and a refrigerating head of the refrigerator penetrates through the Dewar structure and extends into the sealed cavity; the cold guide plate is connected to the refrigerating head and is arranged on the first coil end plate; the cold conduction coil is sleeved on the barrel, and the superconducting coil is in contact with the cold conduction coil; and the cold guide strip is connected to the cold guide plate and the cold guide coil. The edges of the two sides of the superconducting coil are in contact with the cold-conducting coil, so that each layer of superconducting strip wound on the cylinder body is in contact with the cold-conducting coil, the conduction area of the superconducting coil and the cold-conducting coil is greatly increased, and the cooling rate of the superconducting magnet by the refrigerator is increased.
Drawings
FIG. 1 is a schematic diagram of a superconducting magnet system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of a superconducting magnet in an embodiment of the invention;
FIG. 3 is an enlarged schematic view taken at "A" in FIG. 2;
FIG. 4 is a schematic structural view of a first tie rod assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of the seat body according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of a cold conducting plate according to an embodiment of the invention;
FIG. 7 is a sectional view of a cold guide coil and a single-layer superconducting tape according to an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
1. a dewar structure; 11. sealing the cavity;
2. a superconducting magnet; 21. a barrel; 22. a superconducting coil; 23. a first coil end plate; 24. a second coil end plate;
3. a cooling device; 31. a refrigerator; 32. a cold conducting plate; 33. a cold conduction coil; 331. a first cold conduction coil; 332. a second cold conduction coil; 333. a third cold conduction coil; 334. a fourth cold conduction coil; 335. a fifth cold conduction coil; 336. a first cold conduction coil; 34. conducting cold strips;
4. a winding slot;
51. a fastener; 52. a stopper; 53. a first tie rod assembly; 531. a pull rod; 532. a base body; 533. a first adjustment seat; 534. a second adjustment seat; 535. adjusting a rod; 54. a second tie rod assembly;
6. a support ring;
7. a superconducting tape.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1, the present application provides a superconducting magnet system comprising: the Dewar structure 1 is characterized in that a sealed cavity 11 is formed in the Dewar structure 1; the superconducting magnet 2 is arranged in the sealed cavity 11, the superconducting magnet 2 comprises a cylinder 21 and a superconducting coil 22, two ends of the cylinder 21 are connected with a first coil end plate 23 and a second coil end plate 24, and the superconducting coil 22 is wound on the cylinder 21; the cooling device 3 penetrates through the Dewar structure 1, the cooling device 3 extends in the sealed cavity 11 and is in contact with the superconducting magnet 2, and the cooling device 3 is used for cooling the superconducting magnet 2; wherein the cooling device 3 comprises: the refrigerator 31 is arranged outside the Dewar structure 1, and a refrigerating head of the refrigerator 31 penetrates through the Dewar structure 1 and extends into the sealed cavity 11; a cold conducting plate 32 connected to the refrigeration head, the cold conducting plate 32 being arranged on the first coil end plate 23; the cold conduction coil 33 is sleeved on the barrel 21, and the supercoil is contacted with the cold conduction coil 33; a cold conducting bar 34 connected to the cold conducting plate 32 and the cold conducting coil 33; the edges of the two sides of the superconducting coil 22 are in contact with the cold-conducting coil 33, so that each layer of superconducting strip 7 wound on the cylinder 21 is in contact with the cold-conducting coil 33, the conduction areas of the superconducting coil 22 and the cold-conducting coil 33 are greatly increased, and the cooling rate of the superconducting magnet 2 by the refrigerator is increased.
In some embodiments of the present application, superconducting coils 22 are formed by a stacked arrangement of superconducting tapes 7.
In some embodiments of the present application, the number of turns of superconducting coil 22 is 36.0 to 37.0 ten thousand, and preferably, the number of turns of superconducting coil 22 is 35 ten thousand; the Dewar structure 1 is composed of an inner cylinder, an outer cylinder, an upper flange and a lower flange, and a sealed cavity 11 formed in the Dewar structure 1 is in a vacuum state under the working state of the superconducting magnet 2 system; in addition, the outer surface of the outer cylinder is wrapped with a magnetic shield for limiting the superconducting magnet 2 in the Dewar structure 1 from causing magnetic field interference on components arranged outside the Dewar structure 1; the inner diameter of the inner cylinder is 1775 mm-1765 mm, preferably, the inner diameter of the inner cylinder is 1770mm; the central magnetic field formed in the superconducting magnet 2 is greater than 1T.
In some embodiments of the present application, cold-conducting coils 33 are used to exchange heat from the cold head and superconducting coils 22 via cold-conducting plates 32 and cold-conducting strips 34.
It should be noted that, during the operation of the refrigerator 31, or when an excitation current flows through the superconducting coil 22 and the temperature of the superconducting coil 22 is higher than a preset temperature value, the refrigerator 31 transmits the cold energy to the superconducting coil 22 through the cold head of the refrigerator 31, the cold conducting plate 32, the cold conducting strip 34 and the cold conducting coil 33 in sequence, so as to cool the superconducting coil 22.
In some embodiments of the present application, the material of the cold conducting plate 32, the cold conducting strip 34 and the cold conducting coil 33 is preferably copper, which can ensure the cooling efficiency of the refrigerator 31 of the present application on the superconducting coil 22; in addition, the outer surfaces of the cold conduction plate 32, the cold conduction strip 34 and the cold conduction coil 33 are wrapped with an insulating layer, and the material of the insulating layer includes, but is not limited to, polyimide or polypropylene laminated paper.
As shown in fig. 6, in some embodiments of the present application, the cold guide plate 32 has a plate-shaped arc structure, or a ring structure; the outer side edge of the cold conducting plate 32 is disposed flush with the outer side edge of the first coil end plate 23.
It should be noted here that the cold conducting plate 32 is a plate-shaped arc structure or an annular structure, and when the cold conducting plate 32 is an arc segment, that is, the number of correspondingly arranged refrigerators 31 is small, and the number of cold conducting strips 34 is arranged corresponding to the plate-shaped arc cold conducting plate 32, on the premise of ensuring the cooling rate of the superconducting magnet 2 system, the usage rate or efficiency of the cold energy of the refrigerators 31 can be ensured, the operating cost of the superconducting magnet 2 system is reduced, and energy is saved; when the cold conducting plate 32 is a ring structure, that is, the cold conducting plate 32 and the first coil end plate 23 are the same in shape, the cold conducting plate 32 is arranged on the circumference of the whole cylinder 21, the number of the refrigerators 31 is correspondingly increased, and the cold conducting strip 34 is arranged on the outer circumference of the whole superconducting coil 22, so as to ensure the cooling rate of the superconducting magnet 2 system in the present application; in addition, the edge of the cold conducting plate 32 is flush with the edge of the first coil end plate 23, so that the cold conducting plate 32 cannot stop an annular closed magnetic circuit formed by the superconducting magnet 2 when the exciting current is supplied, and the reduction of the magnetic field intensity is avoided.
As shown in fig. 2, in some embodiments of the present application, the number of the cold conduction coils 33 is set to be plural, a winding slot 4 is formed between the outer surface of the barrel 21 and the plurality of cold conduction coils, the superconducting coil 22 is wound in the winding slot 4, and both side edges of the superconducting coil 22 are in contact with the cold conduction coils 33.
As shown in fig. 7, in some embodiments of the present application, a winding groove 4 is formed between a plurality of cold conduction coils and an outer surface of a barrel 21, a superconducting coil 22 is wound in the winding groove 4, both side edges of the superconducting coil 22 are in contact with the cold conduction coils 33, the cold conduction coils 33 are used as a component for performing contact heat exchange with the superconducting coil 22, in the case that a plurality of superconducting tapes 7 are stacked, both side surfaces of the superconducting coil 22 are formed with a surface structure, the superconducting coil 22 is wound in the winding groove 4, both side surfaces of the entire superconducting coil 22 are completely attached to the cold conduction coils 33, and a contact area or a heat exchange area between the superconducting coil 22 and the cold conduction coils 33 is ensured; in addition, for the single-layer superconducting tape 7, the cold guiding coils 33 are in contact with the edges of the two sides of the superconducting tape 7, and the cold on the cold guiding coils 33 is gradually transferred from the two sides of the superconducting tape 7 to the middle of the superconducting tape 7, or the heat on the superconducting tape 7 is gradually transferred from the two sides of the superconducting tape 7 to the middle of the superconducting tape 7 to the cold guiding coils 33, so that the cooling rate and the cooling effect of the superconducting magnet 2 system are ensured.
In some embodiments of the present application, the slot bottom and the slot opening of the winding slot 4 may further be provided with a cold conducting piece, so as to wrap the superconducting coil 22 between the cold conducting piece and the cold conducting coil 33, further increasing the refrigerating speed of the superconducting magnet 2 by the refrigerator 31; the material of the same cold conductor is preferably copper.
As shown in fig. 2, in some embodiments of the present application, a superconducting magnet 2 system comprises: the fastener 51 is arranged in the cold-conducting coil 33, the first coil end plate 23 and the second coil end plate 24 in a penetrating mode; and a limiting member 52 sleeved on the fastening member 51, wherein the limiting member 52 is connected and attached to the cold-conducting coil 33, the first coil end plate 23 and the second coil end plate 24 to limit the width of the winding slot 4.
As shown in fig. 2, in some embodiments of the present application, a superconducting magnet 2 system comprises: a first tie rod assembly 53 connected between the bottom of the sealed cavity 11 and the second coil end plate 24; the second pull rod assembly 54 is disposed through the cold conducting coil 33, the first coil end plate 23 and the second coil end plate 24, the second pull rod assembly 54 is connected to the top of the sealed cavity 11, and the first pull rod assembly 53 and the second pull rod assembly 54 are used for limiting the superconducting magnet 2 from contacting the inner wall of the sealed cavity 11.
As shown in fig. 4, in some embodiments of the present application, the second tie rod assembly 54 is disposed through the cold conduction plate 32; the first pull rod assembly 53 includes a pull rod 531 and two fastening bodies 532, the pull rod 531 is rotatably connected between the two fastening bodies, and the two fastening bodies 532 are respectively connected to the second coil end plate 24 and the bottom of the sealed cavity 11.
It should be noted that, the number of the first pull rod assemblies 53 and the second pull rod assemblies 54 may be provided in plural, and the plural first pull rod assemblies 53 and the plural second pull rod assemblies 54 are uniformly arranged on the circumference where the first coil end plate 23 and the second coil end plate 24 are located; when the cold guide plate 32 is a plate-shaped arc structure of the cold guide plate 32, part of the second pull rod assemblies 54 are arranged on the cold guide plate 32 in a penetrating manner, and when the cold guide plate 32 is an annular structure, a plurality of second pull rod assemblies 54 are arranged on the cold guide plate 32 in a penetrating manner; in addition, the first pull rod assembly 53 and the second pull rod assembly 54 ensure the stability of the superconducting magnet 2 while keeping the superconducting magnet 2 from contacting the inner wall of the sealed cavity 11.
In addition, as shown in fig. 5, the base body connected to the bottom of the sealed cavity 11 includes a first adjusting base 533, a second adjusting base 534 and an adjusting rod 535, one end of the adjusting rod 535 is connected to the first adjusting base 533, or one end of the adjusting rod 535 is rotatably connected to the first adjusting base 533, and the other end of the adjusting rod 535 is connected to the second adjusting base 534, specifically, the adjusting rod 535 is inserted into the second adjusting base 534, and an external thread is provided on an outer wall of the adjusting rod 535, and a threaded hole is correspondingly provided on the second adjusting base 534, so that the length of the adjusting rod 535, that is, the distance between the first adjusting base 533 and the second adjusting base 534 can be adjusted, the stability of the superconducting magnet 2 in the sealed cavity 11 is ensured, and the position of the superconducting magnet 2 in the sealed cavity 11 can be adjusted according to the measured deformation amount of each component in the superconducting magnet 2 system in the low temperature environment.
As shown in fig. 2, in some embodiments of the present application, to further enhance the stability of the superconducting magnet 2 within the sealed cavity 11, the superconducting magnet 2 system comprises: the support ring 6 is connected to the first coil end plate 23, the second pull rod assembly 54 is disposed on the support ring 6, and the refrigerator 31 is disposed on the support ring 6.
As shown in fig. 3, in some embodiments of the present application, the cold-conductive coil 33 includes: the first cold-conducting coil 331 is attached to the first coil end plate 23, the second cold-conducting coil 332 is attached to the second coil end plate 24, the third cold-conducting coil 333 and the fourth cold-conducting coil 334 are attached to each other, the third cold-conducting coil 333 and the fourth cold-conducting coil 334 are located between the first cold-conducting coil 331 and the second cold-conducting coil 332, the fifth cold-conducting coil 335 and the sixth cold-conducting coil 336 are attached to each other, and the fifth cold-conducting coil 335 and the sixth cold-conducting coil 336 are located between the fourth cold-conducting coil 334 and the second cold-conducting coil 332.
It should be noted that, three winding slots 4 are formed by the arrangement of the first cold guiding coil 331, the second cold guiding coil 332, the third cold guiding coil 333, the fourth cold guiding coil 334, the fifth cold guiding coil 335 and the sixth cold guiding coil 336, so as to distribute the number of turns of the superconducting coil 22 into three winding slots 4, distribute the superconducting coil 22 into three or more winding slots 4, and change the contact surface between the superconducting coil 22 and the cold guiding coil 33 from two surfaces to six surfaces, that is, the contact area between the two sides of the superconducting coil 22 and the cold guiding coil 33 is increased, so as to ensure the cooling speed of the magnet of the superconducting magnet 2.
In some embodiments of the present application, the cold conducting bar 34 is connected to the first cold conducting coil 331, the third cold conducting coil 333, the fourth cold conducting coil 334, the fifth cold conducting coil 335, and the sixth cold conducting coil 336; the number of the cold conduction bars 34 is set to be plural.
It should be noted that the cold conducting strip 34 is not connected to the second cold conducting ring, and the second cold conducting ring is attached to the second coil end plate 24, and the second cold conducting coil 332 is the farthest point from the cooling source, so that the loss of cooling capacity is avoided, and the cooling efficiency of the superconducting magnet 2 system of the present application is improved.
In summary, in some embodiments of the present application, there is provided a superconducting magnet system comprising: the Dewar structure is internally provided with a sealed cavity; the superconducting magnet is arranged in the sealed cavity and comprises a cylinder body and superconducting coils, the two ends of the cylinder body are connected with a first coil end plate and a second coil end plate, and the superconducting coils are wound on the cylinder body; the cooling device penetrates through the Dewar structure, extends in the sealed cavity and is in contact with the superconducting magnet, and is used for cooling the superconducting magnet; wherein, cooling device includes: the refrigerator is arranged outside the Dewar structure, and a refrigerating head of the refrigerator penetrates through the Dewar structure and extends into the sealed cavity; the cold guide plate is connected to the refrigerating head and arranged on the first coil end plate; the cold conduction coil is sleeved on the barrel, and the superconducting coil is contacted with the cold conduction coil; and the cold guide strip is connected to the cold guide plate and the cold guide coil. The edges of the two sides of the superconducting coil are in contact with the cold conduction coil, so that each layer of superconducting strip wound on the cylinder is in contact with the cold conduction coil, the conduction area of the superconducting coil and the cold conduction coil is greatly increased, and the cooling rate of the superconducting magnet by the refrigerator is increased.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A superconducting magnet system, comprising:
the Dewar structure is internally provided with a sealed cavity;
the superconducting magnet is arranged in the sealed cavity and comprises a cylinder body and superconducting coils, two ends of the cylinder body are connected with a first coil end plate and a second coil end plate, and the superconducting coils are wound on the cylinder body;
the cooling device penetrates through the Dewar structure, extends in the sealed cavity and is in contact with the superconducting magnet, and is used for cooling the superconducting magnet;
wherein the cooling device comprises:
the refrigerator is arranged outside the Dewar structure, and a refrigerating head of the refrigerator penetrates through the Dewar structure and extends into the sealed cavity;
the cold guide plate is connected to the refrigerating head and is arranged on the first coil end plate;
the cold conduction coil is sleeved on the barrel, and the superconducting coil is in contact with the cold conduction coil;
the cold conducting strip is connected to the cold conducting plate and the cold conducting coil;
the cold conduction coil is used for exchanging heat on the refrigerating head and the superconducting coil through the cold conduction plate and the cold conduction strip;
the cold guide plate is of a plate-shaped arc structure or an annular structure;
the edge of the cold conducting plate is flush with the edge of the first coil end plate;
the number of the cold conduction coils is set to be a plurality of, a winding groove is formed between the outer surface of the barrel and the plurality of cold conduction coils, the superconducting coils are wound in the winding groove, and the edges of two sides of the superconducting coils are in contact with the cold conduction coils.
2. The superconducting magnet system of claim 1, wherein the superconducting magnet system comprises:
the fasteners penetrate through the cold conduction coil, the first coil end plate and the second coil end plate;
the limiting part is sleeved on the fastener, and the limiting part is connected and attached to the cold conduction coil, the first coil end plate and the second coil end plate so as to limit the width of the winding slot.
3. The superconducting magnet system of claim 1, wherein the superconducting magnet system comprises:
a first tie rod assembly connected between the bottom of the sealed cavity and the second coil end plate;
the second pull rod assembly penetrates through the cold conduction coil, the first coil end plate and the second coil end plate, is connected to the top of the sealed cavity and is used for limiting the superconducting magnet to be in contact with the inner wall of the sealed cavity.
4. The superconducting magnet system of claim 3 wherein the second tie rod assembly is disposed through the cold conductive plate;
the first pull rod assembly comprises a pull rod and two seat bodies, the pull rod is rotationally connected between the two seat bodies, and the two seat bodies are respectively connected to the second coil end plate and the bottom of the sealed cavity.
5. The superconducting magnet system of claim 3 wherein the superconducting magnet system comprises:
the support ring is connected to the first coil end plate, the second pull rod assembly penetrates through the support ring, and the refrigerator penetrates through the support ring.
6. The superconducting magnet system of any one of claims 1-5 wherein the cold lead coil comprises: first lead cold coil, second lead cold coil, third lead cold coil, fourth lead cold coil, fifth lead cold coil and sixth lead cold coil, first lead cold coil laminate in first coil end plate, the second lead cold coil laminate in the second coil end plate, the third lead cold coil with the fourth lead cold coil laminates each other, just the third lead cold coil with the fourth lead cold coil is located first lead cold coil with between the second lead cold coil, the fifth lead cold coil with the sixth lead cold coil laminates each other, just the fifth lead cold coil with the sixth lead cold coil is located the fourth lead cold coil with between the second lead cold coil.
7. The superconducting magnet system of claim 6 wherein the cold lead bar is connected to the first, third, fourth, fifth and sixth cold lead coils;
the number of the cold guide strips is set to be a plurality.
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| CN114121399B (en) * | 2021-11-25 | 2022-09-20 | 浙江大学 | Superconducting magnet cooling system |
| CN115036093B (en) * | 2022-06-20 | 2023-04-11 | 华中科技大学 | Superconducting magnet combined type cooling device and operation method thereof |
| CN115291148B (en) * | 2022-09-29 | 2022-12-20 | 中国科学院合肥物质科学研究院 | Large superconducting magnet low-temperature test supporting device |
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| JP2002043117A (en) * | 2000-07-26 | 2002-02-08 | Sumitomo Heavy Ind Ltd | Conductively cooled superconducting magnet |
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| CN102737806B (en) * | 2012-06-11 | 2013-10-30 | 华中科技大学 | Structure for conducting and cooling high-temperature superconducting magnet |
| CN206003577U (en) * | 2016-08-30 | 2017-03-08 | 河南省豫星华晶微钻有限公司 | A kind of high-temperature superconducting magnet cold guide apparatus |
| CN106298149B (en) * | 2016-09-13 | 2018-01-23 | 华北电力大学 | A kind of conduction cooling superconducting magnet and preparation based on ReBCO spiral coating conductor pieces |
| CN109036758B (en) * | 2018-07-16 | 2020-06-23 | 中国科学院合肥物质科学研究院 | Cold volume transmission structure of high temperature superconducting magnet is placed to level |
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