阅读说明：本技术 一种超导磁体系统 (Superconducting magnet system ) 是由 马韬 伍锐 戴少涛 胡磊 马化韬 黄建民 伍宇扬 于 2020-12-31 设计创作，主要内容包括：本发明涉及超导磁体技术领域,公开了一种超导磁体系统,其包括：杜瓦结构,杜瓦结构内形成有密封空腔；超导磁体,设置于密封空腔内,超导磁体包括筒体和超导线圈,筒体的两端连接有第一线圈端板和第二线圈端板,超导线圈绕设于筒体上；冷却装置,穿设于杜瓦结构,冷却装置在密封空腔内延伸且接触于超导磁体,冷却装置用于冷却超导磁体；冷却装置包括：制冷机、导冷板、导冷线圈、导冷条,通过将超导线圈的两侧边缘接触于导冷线圈,使得绕制在筒体上的每一层超导带材均与导冷线圈接触,大大提升了超导线圈与导冷线圈的传导面积,提升了制冷机对超导磁体的冷却速率。(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 a superconducting coil, wherein a first coil end plate and a second coil end plate are connected to two ends of the cylinder body, and the superconducting coil is 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.)

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 a superconducting coil, a first coil end plate and a second coil end plate are connected to two ends of the cylinder body, and the superconducting coil is 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;

and the cold guide strip is connected to the cold guide plate and the cold guide coil.

2. The superconducting magnet system of claim 1 wherein the cold-conducting coil is configured to exchange heat on the refrigeration head and the superconducting coil through the cold-conducting plate and the cold-conducting strip.

3. The superconducting magnet system of claim 1, wherein the cold conductive plate is a plate-like arc structure, or an annular structure;

the edge of the cold conducting plate is flush with the edge of the first coil end plate.

4. The superconducting magnet system according to claim 1, wherein the plurality of the cold conduction coils are provided, a winding groove is formed between the outer surface of the cylindrical body and the plurality of the cold conduction coils, the superconducting coil is wound in the winding groove, and both side edges of the superconducting coil are in contact with the cold conduction coils.

5. The superconducting magnet system of claim 4, 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.

6. 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.

7. The superconducting magnet system of claim 6 wherein the second puller 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.

8. The superconducting magnet system of claim 6 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.

9. The superconducting magnet system of any one of claims 1-8 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 second coil end plate, the third lead cold coil with the fourth leads cold coil and laminates each other, just the third lead cold coil with the fourth lead cold coil is located first lead cold coil with between the cold coil is led to the second, 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 cold coil is led to the second.

10. The superconducting magnet system of claim 9 wherein the cold lead 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.

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.

To achieve the above object, in some embodiments of the present application, there is provided a superconducting magnet system including: the Dewar structure is internally provided with a sealed cavity; 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.

In some embodiments of the present application, the cold conduction coil is configured to exchange heat between the refrigeration head and the superconducting coil via the cold conduction plate and the cold conduction strip.

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 barrel is formed with a winding slot between the cold conduction coils, the superconducting coil is wound in the winding slot, and the two side edges of the superconducting coil are both 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 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.

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 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.

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 second coil end plate, the third lead cold coil with the fourth leads cold coil and laminates each other, just the third lead cold coil with the fourth lead cold coil is located first lead cold coil with between the cold coil is led to the second, 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 cold coil is led to the second.

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 Dewar structure is internally provided with a sealed cavity; 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 structural diagram 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 structural diagram of a base body according to an 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 conducting 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 limiting member; 53. a first tie rod assembly; 531. a pull rod; 532. a base body; 533. a first adjusting seat; 534. a second adjusting 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 implicitly indicating 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 body 21 and a superconducting coil 22, two ends of the cylinder body 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 body 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, and the cold conducting plate 32 is disposed 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 the superconducting coil 22 is 36.0 to 37.0 ten thousand, and preferably, the number of turns of the 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 1770 mm; 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, when the cold conducting plate 32 is an arc segment, that is, the number of the correspondingly arranged refrigerators 31 is small, and the number of the cold conducting strips 34 is arranged corresponding to the plate-shaped arc cold conducting plate 32, so that the utilization rate or efficiency of the cold energy of the refrigerators 31 can be ensured on the premise of ensuring the cooling rate of the superconducting magnet 2 system, the operating cost of the superconducting magnet 2 system is reduced, and the 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 guide plate 32; the first pull rod assembly 53 includes a pull rod 531 and two seat bodies 532, the pull rod 531 is rotatably connected between the two seat bodies, and the two seat 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 deformation of each component in the superconducting magnet 2 system under 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 that the number of turns of the superconducting coil 22 is distributed into three winding slots 4, the superconducting coil 22 is distributed into three or more winding slots 4, the contact surface between the superconducting coil 22 and the cold-guiding coil 33 is changed from two surfaces to six surfaces, that is, the contact area between two sides of the superconducting coil 22 and the cold-guiding coil 33 is increased, and the cooling speed of the magnet of the superconducting magnet 2 is ensured.

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 a superconducting coil, wherein a first coil end plate and a second coil end plate are connected to two ends of the cylinder body, and the superconducting coil is 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 is 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-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.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various 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.