CN112420312B - Modular high-temperature superconducting magnet system and assembly method thereof - Google Patents
Modular high-temperature superconducting magnet system and assembly method thereof Download PDFInfo
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- CN112420312B CN112420312B CN202011187592.4A CN202011187592A CN112420312B CN 112420312 B CN112420312 B CN 112420312B CN 202011187592 A CN202011187592 A CN 202011187592A CN 112420312 B CN112420312 B CN 112420312B
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/048—Superconductive 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
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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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Abstract
The invention discloses a modularized high-temperature superconducting magnet system, which comprises an upper container cover plate, a superconducting magnet, a frame assembly, M support assemblies and a lower container bottom plate, wherein the upper container cover plate and the lower container bottom plate are both composed of a body and a connecting block; the invention is particularly suitable for being used in a high-temperature superconducting motor, and is particularly suitable for being used in a high-temperature superconducting motor or a high-temperature superconducting direct-driven wind driven generator for ship propulsion with the requirements of high power, low rotating speed, compact structure, low running cost and the like.
Description
Technical Field
The invention belongs to the field of superconducting application, and particularly relates to a modular high-temperature superconducting magnet system and an assembling method thereof.
Background
The conventional synchronous motor generally adopts a copper winding rotor, and under the operating condition, a large amount of joule heat is generated due to the resistance of the copper winding, so that the efficiency of the motor is reduced.
Because the superconducting material has the zero resistance effect that the resistance is changed into zero in a low-temperature environment, the superconducting magnet developed by the rotor winding by adopting the superconducting material has no power loss, and the efficiency of the motor is further greatly improved. In addition, compared with the conventional copper winding, the superconducting magnet can bear higher current under a strong magnetic field, so that the superconducting motor has the advantages of small volume, light weight, high power density, high torque density and the like. In recent years, many researchers have been working on developing a feasible, highly reliable high temperature superconducting motor.
In the prior art, there are various high-temperature superconducting motor rotor structures. The superconducting magnets of most high-temperature superconducting motors are all installed and fixed on a low-temperature component, and the magnets are connected in series through current leads to form a circuit loop with an external magnet current source. Wherein, in order to provide a cryogenic vacuum environment, all superconducting magnets are placed in a huge vacuum container together with cryogenic components. Under the operation condition, if one high-temperature superconducting magnet fails, the vacuum container needs to be opened in order to repair or replace the failed high-temperature superconducting magnet, but the huge vacuum container brings great difficulty to the repair and maintenance of the superconducting magnet.
Based on the above, a modularized superconducting magnet system is provided, which can meet the requirements of operating environment (low temperature, vacuum and through flow), performance (strength and heat leakage) and simple maintenance and high reliability, wherein the superconducting magnet systems are structurally independent.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a modular high-temperature superconducting magnet system which can meet the actual working requirements and is structurally independent from each other by starting from the structure of a high-temperature superconducting magnet and a support assembly thereof and considering the assembly process.
The technical scheme adopted by the invention for solving the technical problems is as follows: a modularized high-temperature superconducting magnet system is composed of a vacuum container, a superconducting magnet and a support assembly; the vacuum container comprises a container upper cover plate, a container lower base plate and a frame assembly which is respectively connected with the container upper cover plate and the container lower base plate through bolts and sealing rings, wherein the container lower base plate comprises a lower base plate body and lower base plate connecting blocks which are arranged on the left side and the right side of the lower base plate body in pairs; the superconducting magnet consists of a runway-shaped magnet lower bottom plate with an L-shaped cross section, a magnet upper cover plate and N (N is more than or equal to 2) double-cake coils clamped between the magnet lower bottom plate and the magnet upper cover plate, the two double-cake coils are connected together in a penetrating way through a pin and a bolt to form a whole, each double-cake coil consists of an inner ring, an outer ring and a superconducting coil solidified between the inner ring and the outer ring through low-temperature resin, the N double-cake coils are connected together in series through a lead wire, the left side and the right side of the magnet upper cover plate and the magnet lower bottom plate are respectively provided with a fixed block corresponding to a lower bottom plate connecting block/an upper cover plate connecting block, the magnet lower bottom plate or the magnet upper cover plate is connected with a refrigerant transmission joint through a pipeline, the refrigerant transmission joint is connected with an external low-temperature refrigeration system through a pipeline, and the superconducting magnet is connected with a sealing binding post through a current lead wire, the sealed wiring terminal is connected with an external magnet current source; the supporting assembly is composed of a plurality of first supporting rods arranged on the left side and the right side of the magnet lower bottom plate along the length direction of the superconducting magnet, a plurality of second supporting rods arranged on the magnet lower bottom plate in an X-shaped crossed mode along the width direction of the superconducting magnet and a plurality of third supporting rods arranged on the left side and the right side of the magnet upper cover plate along the length direction of the superconducting magnet, two ends of the first supporting rods and two ends of the second supporting rods are respectively connected with a lower bottom plate connecting block and a fixing block on the magnet lower bottom plate through pins, and two ends of the third supporting rods are respectively connected with an upper cover plate connecting block and a fixing block on the magnet upper cover plate through pins; the outer surfaces of the superconducting magnet, the support assembly and the low-temperature pipeline are coated with a plurality of layers of heat insulating materials.
The modular high-temperature superconducting magnet system is characterized in that the lower base plate connecting block and the upper cover plate connecting block are formed by processing stainless steel plates, aluminum alloy plates, titanium alloy plates or copper plates.
The first support rod, the second support rod and the third support rod of the modularized high-temperature superconducting magnet system are composed of middle sections with circular or square cross sections, and front end portions and rear end portions with pin holes, and are formed by processing a combined material formed by a full composite material, a titanium alloy, stainless steel, an aluminum alloy or a composite material and a metal material.
The inner ring and the outer ring of the modularized high-temperature superconducting magnet system are formed by processing stainless steel plates, aluminum alloy plates, titanium alloy plates, oxygen-free copper plates or glass fiber composite material plates.
In the modularized high-temperature superconducting magnet system, the first supporting rod is connected with the superconducting magnet, the low-temperature end of the first supporting rod is close to the geometric center of the superconducting magnet, the normal-temperature end of the first supporting rod is connected with the vacuum container and is far away from the geometric center of the superconducting magnet, and the assembly angle of the first supporting rod, the lower bottom plate of the container and the superconducting magnet is more than 0 degree and not more than 45 degrees.
Another object of the present invention is to provide an assembling method of the above modular high temperature superconducting magnet system, comprising the steps of:
step 7, connecting a current lead of the superconducting magnet with a sealed wiring terminal, and connecting the current lead with a refrigerant transmission joint through a pipeline;
and 9, hermetically installing a transition plate provided with a sealing wiring terminal, a vacuumizing joint and a refrigerant transmission joint on the frame body to obtain the modularized high-temperature superconducting magnet system.
The invention has the beneficial effects that: when the superconducting magnet system is used for a high-temperature superconducting ship propulsion motor or a high-temperature superconducting wind driven generator, compared with the scheme that all superconducting magnets are installed and fixed on a low-temperature component and share one huge vacuum container, when a certain superconducting magnet breaks down, only the vacuum container of the superconducting magnet which breaks down is needed to be opened, and the vacuum containers of other superconducting magnets are not needed to be opened, so that the difficulty of maintaining the superconducting magnet is reduced, and the maintainability and the reliability of the superconducting motor are improved.
The superconducting magnet and the supporting component thereof are assembled in a design unit, so that a motor assembler does not need to know low temperature and vacuum, and the technical requirement and difficulty of motor assembly are reduced.
And when the superconducting magnet is in a low-temperature environment, due to low-temperature cold shrinkage of materials, the superconducting magnet is shortened to a certain extent in both the length direction and the width direction, and the clearance can exactly compensate the cold shrinkage of the superconducting magnet, so that the support assembly, the superconducting magnet and the vacuum container are connected in tight fit under the low-temperature environment, and the rigidity of the whole magnet system under the low-temperature working condition is further improved.
The invention has great innovation in the aspects of reducing the technical requirements and difficulty of motor assembly, reducing the maintenance difficulty, improving the reliability of the whole machine, improving the rigidity of a magnet system and the like, is particularly suitable for being used in a high-temperature superconducting motor, and is particularly suitable for being used in a high-temperature superconducting motor or a high-temperature superconducting direct-driven wind driven generator for ship propulsion with the requirements of high power, low rotating speed, compact structure, low operation cost and the like.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the present invention with the frame assembly removed;
fig. 3 is a schematic structural diagram of the superconducting magnet of the present invention;
fig. 4 is a schematic cross-sectional structure diagram of the superconducting magnet of the present invention;
FIG. 5 is a schematic diagram of a structure of a superconducting magnet double-pancake coil according to the present invention;
FIG. 6 is a schematic structural diagram of a lower base plate of the superconducting magnet of the present invention;
FIG. 7 is a schematic structural diagram of an upper cover plate of the superconducting magnet according to the present invention;
fig. 8 is a schematic structural view of the connection of the superconducting magnet and the support assembly according to the present invention;
fig. 9 is a bottom view of the superconducting magnet of the present invention connected to a support assembly;
fig. 10 is a top view of a superconducting magnet of the present invention coupled to a support assembly;
FIG. 11 is a schematic structural view of a support assembly of the present invention;
FIG. 12 is a schematic view of the construction of the lower floor of the container of the present invention;
FIG. 13 is a schematic view of the construction of the cover plate of the container of the present invention;
FIG. 14 is a schematic structural view of the frame assembly of the present invention;
fig. 15 is a schematic cross-sectional structure of the present invention.
The figures are numbered: 1-container lower bottom plate, 11-lower bottom plate body, 12-lower bottom plate connecting block, 2-supporting component, 21-supporting rod one, 22-supporting rod two, 23-supporting rod three, 211-front end part, 212-middle section, 213-rear end part, 3-bolt, 4-frame component, 41-vacuum joint, 42-refrigerant transmission joint, 43-frame body, 44-sealing terminal, 431/432/433-matching surface, 5-superconducting magnet, 51-double-cake coil, 52-magnet lower bottom plate, 53-magnet upper cover plate, 511-inner ring, 512-superconducting coil, 513-outer ring, 521-magnet lower bottom plate body, 522/523/532-n-shaped block with pin hole, 531-magnet upper cover plate body, 6-container upper cover plate, 61-upper cover plate connecting block, 62-container upper cover plate body.
Detailed Description
The invention is further illustrated by the following figures and examples.
The invention has great innovation in the aspects of reducing the technical requirements and difficulty of motor assembly, reducing the difficulty of maintenance, improving the reliability of the whole machine, improving the rigidity of a magnet system and the like. The invention is suitable for the application occasions of the high-temperature superconducting magnet, and is particularly suitable for being used as a high-temperature superconducting ship propulsion motor or a high-temperature superconducting wind driven generator with the requirements of high power, low rotating speed, compact structure, high power density, high torque density and the like.
The invention discloses a modularized high-temperature superconducting magnet system, which comprises a container upper cover plate 6, a superconducting magnet 5, a frame assembly 4, M support assemblies 2 and a container lower bottom plate 1, wherein M is more than or equal to 4, the container upper cover plate 6 and the container lower bottom plate 1 are both composed of a body (a lower bottom plate body 11/a container upper cover plate body 62) and connecting blocks (a lower bottom plate connecting block 12/an upper cover plate connecting block 61) which are paired, the connecting blocks are N-shaped blocks with pin holes, the number of the N-shaped blocks is M pairs (M is more than or equal to 4), the superconducting magnet 5 is composed of N double-pancake coils 51, a magnet upper cover plate 53 and a magnet lower bottom plate 52, N is more than or equal to 2, the magnet upper cover plate 53 and the magnet lower bottom plate 52 are both composed of the body and a fixed block, the fixed blocks are N-shaped blocks with pin holes and correspond to the connecting blocks, the number of the N is M pairs, and two ends of the M support assemblies 2 are respectively arranged at two ends of the superconducting magnet 5, In the n-shaped blocks of the upper container cover plate 6 and the lower container bottom plate 1, when the n-shaped blocks are arranged along the length direction of the superconducting magnet 5, the assembly angle between the n-shaped blocks and the superconducting magnet 5 and the vacuum container is theta (theta is more than 0 degree and less than or equal to 45 degrees), and the n-shaped blocks are arranged in pairs in a crossed manner along the width direction of the superconducting magnet and are in an X shape. The arrangement method greatly reduces the total height of the superconducting magnet and the supporting assembly thereof and reduces the total size while meeting the heat leakage requirement; in addition, when the support assemblies are arranged along the width direction of the superconducting magnet, the support assemblies are arranged in pairs in a crossed mode and are in an X shape. The arrangement method meets the heat leakage requirement, improves the stability of the system and further improves the reliability of the system.
Example 1
Referring to fig. 1 to 15, a basic embodiment of the present invention is shown.
A modularized high-temperature superconducting magnet system comprises a vacuum container, a superconducting magnet 5 and a supporting component 2, wherein the vacuum container comprises a container upper cover plate 6, a container lower bottom plate 1 and a frame component 4, the container lower bottom plate 1 comprises a lower bottom plate body 11 and lower bottom plate connecting blocks 12 which are arranged on the left side and the right side of the lower bottom plate body 11 in pairs, the container upper cover plate 6 comprises a container upper cover plate body 62 and upper cover plate connecting blocks 61 which are arranged on the container upper cover plate body 62 in pairs, the lower bottom plate connecting blocks 12 and the upper cover plate connecting blocks 61 are n-shaped blocks which are formed by processing stainless steel plates, aluminum alloy plates, titanium alloy plates or copper plates and are provided with pin holes, and the number of the n-shaped blocks is 18 pairs in total. The frame assembly 4 is respectively connected with the upper cover plate 6 of the container and the lower bottom plate 1 of the container through bolts 3 and sealing rings, the frame assembly 4 is composed of a frame body 43, a sealing binding post 44, a vacuum pumping joint 41 and a refrigerant transmission joint 42, wherein the sealed wiring terminal 44, the vacuumizing connector 41 and the refrigerant transmission connector 42 are all hermetically mounted on a transition plate, the transition plate is hermetically mounted on a frame body 43, the frame body 43 adopts a II-shaped structure and comprises 3 matching surfaces, the matching surface 431 is a matching surface between the frame body 43 and the container bottom plate 1, the matching surface 432 is a matching surface between the frame body 43 and the container top cover plate 6, the matching surface 433 is a matching surface between the frame body 43 and the external structure, the matching surfaces are all formed by metal processing, and the container top cover plate 6, the container bottom plate 1 and the frame body 43 of the vacuum container are formed by processing Q235.
The superconducting magnet 5 consists of 8 double-pancake coils 51, an upper magnet cover plate 53 and a lower magnet bottom plate 52, the three are connected together in a penetrating way through pins and bolts 3 to form a whole, the 8 double-pancake coils 51 are connected together in series through leads, the double-pancake coils 51 consist of an inner ring 511, an outer ring 513 and a superconducting coil 512, the three are solidified into a whole through low-temperature resin, wherein the inner ring 511 is formed by processing a copper plate and the outer ring 513 through aluminum alloy plates, the upper magnet cover plate 53 and the lower magnet bottom plate 52 are in a runway-shaped plate with an L-shaped section in a structural form, the lower magnet bottom plate 52 consists of a lower magnet bottom plate body 521, n-shaped blocks 522 with pin holes and n-shaped blocks 523 with pin holes which are arranged transversely and longitudinally, the upper magnet cover plate 53 consists of an upper magnet cover plate body 531 and n-shaped blocks 532 with pin holes which are positioned in a left groove and a right groove in the middle of the upper magnet cover plate body 531, the number of the n-shaped blocks is 18 pairs in total, the n-shaped blocks are processed by stainless steel plates, the magnet upper cover plate 53 or the magnet lower bottom plate 52 is connected with the refrigerant transmission joint 42 of the frame assembly 4 through a pipeline, the refrigerant transmission joint 42 is connected with an external low-temperature refrigeration system through a pipeline, and due to the particularity of the superconducting magnet, the superconducting magnet relates to the aspects of winding process, low temperature, vacuum maintenance, rigidity and strength, heat leakage and the like, and has higher requirements on fields and personnel technologies, so that a common motor factory is not provided with a winding workshop of the superconducting magnet temporarily. At present, a superconducting magnet is generally designed, wound and tested by designers, and the superconducting magnet is transported to a motor assembly workshop by a design unit for assembly after the test is qualified. In the process, certain hidden dangers may be brought to the performance of the superconducting magnet due to uncontrollable factors of transportation and incompleteness of the motor assembly personnel in understanding the superconducting magnet. Moreover, assembling superconducting magnets on site in a motor assembly workshop also brings great challenges and difficulties for motor assembly personnel.
The superconducting magnet 5 is connected with a sealing binding post 44 of the frame component 4 through a current lead, the sealing binding post 44 is connected with an external magnet current source, the support component 2 is a rod with pin holes at two ends, the cross section is square, and the support component is composed of a middle section 212 of glass fiber reinforced plastics, a front end 211 of stainless steel and a rear end 213 of stainless steel, wherein the front end 211 is arranged in an n-shaped block 522 with a pin hole, an n-shaped block 523 with a pin hole and an n-shaped block 532 with a pin hole, the rear end 213 is arranged in the n-shaped blocks of the lower bottom plate connecting block 12 and the upper cover plate connecting block 61, the connection mode adopts pin connection and clearance fit, the clearance is slightly larger than the clearance of transition fit, and the difficulty of pin assembly is reduced. And when the superconducting magnet is in a low-temperature environment, due to low-temperature cold shrinkage of the materials, the superconducting magnet is shortened to a certain extent in the length direction or the width direction, and the clearance can exactly compensate the cold shrinkage of the superconducting magnet, so that the support assembly, the superconducting magnet and the vacuum container are connected in tight fit in the low-temperature environment, and the rigidity of the whole magnet system under the low-temperature working condition is further improved.
The support assembly 2 in this embodiment has three forms of support assemblies, which are a first support rod 21 and a third support rod 23 arranged along the length direction of the superconducting magnet 5 and a second support rod 22 arranged along the width direction of the superconducting magnet 5, the lower bottom plate connecting block 12 is connected with one end of the first support rod 21 and one end of the second support rod 22 through pin holes, the other ends of the first support rod 21 and the second support rod 22 are connected with a fixed block on the lower bottom plate 52 of the magnet through pin holes, the upper cover plate connecting block 61 is connected with one end of the third support rod 23 through pin holes, and the other end of the third support rod 23 is connected with a fixed block on the upper cover plate 53 of the magnet through pin holes, wherein the front end parts 211 of the low-temperature ends of the first support rod 21 and the third support rod 23 are close to the geometric center of the superconducting magnet 5, and the rear end parts 213 of the normal-temperature ends are far away from the geometric center of the superconducting magnet 5; the supporting rods two 22 along the width direction of the superconducting magnet 5 are arranged in a pairwise crossing manner to form an X shape, the matching among the supporting components 2 and the pins, the matching among the superconducting magnet 5 and the n-shaped blocks and the matching among the pins and the superconducting magnet 5 and the n-shaped blocks are clearance fit, the matching tolerance is H7/H6, when the supporting rods two 22 are arranged along the length direction of the superconducting magnet 5, the assembly angle of the middle section 212, the superconducting magnet 5 and the vacuum container is 10 degrees, and the outer surfaces of the superconducting magnet 5, the supporting components 2 and the pipeline are all coated with multiple layers of heat insulating materials.
The assembling method of the modularized high-temperature superconducting magnet system comprises the following steps:
And 2, connecting the N double-pancake coils 51, the upper magnet cover plate 53 and the lower magnet bottom plate 52 together through pins and bolts 3, wherein the pins and the bolts 3 penetrate through the whole superconducting coil 512, the inner ring 511 and the outer ring 513 to form a whole.
And 3, connecting the first support rods 21 between the lower magnet base plate 52 and the lower base plate connecting block 12 along the length direction, connecting each pair of second support rods 22 between the lower magnet base plate 52 and the lower base plate connecting block 12 in an X shape, and putting pins and locking.
And 4, respectively connecting and locking two ends of the residual third support rod 23 with the upper cover plate 53 of the magnet and the upper cover plate connecting block 61 through pins.
And 5, coating multiple layers of heat insulating materials on the outer surfaces of the superconducting magnet 5 and the support assembly 2.
And 6, placing the parts coated with the multiple layers of heat insulating materials in the II-shaped frame body 43, and hermetically connecting the frame body 43 with the upper container cover plate 6 and the lower container bottom plate 1 by using the bolts 3 and the sealing rings respectively.
And 7, connecting a current lead of the superconducting magnet 5 with a sealing binding post 44 of the frame assembly 4, and connecting the current lead with a refrigerant transmission joint 42 of the frame assembly 4 through a pipeline.
and 9, hermetically installing a transition plate provided with a sealing wiring terminal 44, a vacuumizing connector 41 and a refrigerant transmission connector 42 on the frame body 43 to obtain the modularized high-temperature superconducting magnet system.
Example 2
Different from embodiment 1, the inner ring 511 and the outer ring 513 are each processed from an aluminum alloy plate. Can also be processed by stainless steel plates, titanium alloy plates or copper plates.
Example 3
The difference from embodiment 1 is that the support member 2 has a circular cross section and is machined from a titanium alloy. The composite material can also be processed by a composite material formed by a full composite material, stainless steel, aluminum alloy or a composite material and a metal material.
Example 4
Unlike embodiment 1, when the support assembly 2 is arranged along the length direction of the superconducting magnet, the assembly angle of the body 212 with the superconducting magnet 5 and the vacuum vessel is 5 °.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. A modular high temperature superconducting magnet system, characterized by: the superconducting magnet is composed of a vacuum container, a superconducting magnet (5) and a supporting assembly (2);
the vacuum container consists of a container upper cover plate (6), a container lower bottom plate (1) and a frame component (4) which is respectively connected with the container upper cover plate (6) and the container lower bottom plate (1) through sealing rings, the lower bottom plate (1) of the container consists of a lower bottom plate body (11) and lower bottom plate connecting blocks (12) which are arranged on the left side and the right side of the lower bottom plate body (11) in pairs, the upper cover plate (6) of the container consists of an upper cover plate body (62) of the container and upper cover plate connecting blocks (61) which are arranged on the upper cover plate body (62) of the container in pairs, the frame component (4) consists of a frame body (43) which is connected with the upper cover plate (6) of the container and the lower bottom plate (1) of the container and a transition plate which is connected with the frame body (43), the transition plate is provided with a sealing wiring terminal (44), a vacuumizing joint (41) and a refrigerant transmission joint (42);
the superconducting magnet (5) consists of a magnet lower bottom plate (52) with an L-shaped cross section, a magnet upper cover plate (53) and a plurality of double-pancake coils (51) clamped between the magnet lower bottom plate (52) and the magnet upper cover plate (53), wherein the double-pancake coils (51) consist of an inner ring (511), an outer ring (513) and a superconducting coil (512) solidified between the inner ring (511) and the outer ring (513) through low-temperature resin, the double-pancake coils (51) are connected in series through leads, the left side and the right side of the magnet upper cover plate (53) and the magnet lower bottom plate (52) are respectively provided with a fixed block corresponding to the lower bottom plate connecting block (12)/the upper cover plate connecting block (61), the magnet lower bottom plate (52) or the magnet upper cover plate (53) is connected with a refrigerant transmission joint (42) through a pipeline, and the refrigerant transmission joint (42) is connected with an external low-temperature refrigeration system through a pipeline, the superconducting magnet (5) is connected with a sealed wiring terminal (44) through a current lead, and the sealed wiring terminal (44) is connected with an external magnet current source;
the supporting assembly (2) consists of a plurality of first supporting rods (21) which are arranged on the left side and the right side of a magnet lower bottom plate (52) along the length direction of the superconducting magnet (5), a second supporting rod (22) which is arranged on the magnet lower bottom plate (52) in an X-shaped crossed manner along the width direction of the superconducting magnet (5) and a plurality of third supporting rods (23) which are arranged on the left side and the right side of a magnet upper cover plate (53) along the length direction of the superconducting magnet (5), two ends of the first supporting rods (21) and the second supporting rods (22) are respectively connected with fixing blocks on a lower bottom plate connecting block (12) and the magnet lower bottom plate (52) through pins, and two ends of the third supporting rods (23) are respectively connected with fixing blocks on an upper cover plate connecting block (61) and the magnet upper cover plate (53) through pins;
the outer surfaces of the superconducting magnet (5), the supporting component (2) and the pipeline are coated with a plurality of layers of heat insulating materials.
2. The modular hts magnet system according to claim 1, characterized in that the lower base plate connection block (12) and the upper cover plate connection block (61) are machined from stainless steel, aluminum alloy, titanium alloy or copper plate.
3. A modular high temperature superconducting magnet system according to claim 1 or 2 wherein the first support rod (21), the second support rod (22) and the third support rod (23) are formed by a middle section (212) with a circular or square cross-section and a front end section (211) and a rear end section (213) with pin holes, and are machined from a fully composite material, a titanium alloy, stainless steel, an aluminum alloy or a combination of a composite material and a metal material.
4. A modular high temperature superconducting magnet system according to claim 3 wherein the inner ring (511) and the outer ring (513) are machined from stainless steel sheet, aluminium alloy sheet, titanium alloy sheet, oxygen free copper sheet or glass fibre composite sheet.
5. The modular high-temperature superconducting magnet system according to claim 4, wherein the cryogenic end of the first support rod (21) connected with the superconducting magnet (5) is close to the geometric center of the superconducting magnet (5), and the assembly angle of the first support rod (21) with the vessel bottom plate (1) and the superconducting magnet (5) is more than 0 ° and not more than 45 °.
6. A method of assembling a modular high temperature superconducting magnet system according to claim 1, comprising the steps of:
step 1, winding a plurality of double-pancake coils (51) and processing all parts;
step 2, penetrating the whole inner ring (511), the superconducting coil (512) and the outer ring (513) by using pins and bolts (3), and connecting the double-cake coil (51), the upper magnet cover plate (53) and the lower magnet bottom plate (52) into a whole;
step 3, connecting the first support rods (21) between the lower magnet base plate (52) and the lower base plate connecting block (12) along the length direction, connecting each pair of second support rods (22) between the lower magnet base plate (52) and the lower base plate connecting block (12) in an X shape, and putting and locking pins;
step 4, two ends of the third support rod (23) are respectively connected and locked with the upper cover plate (53) of the magnet and the upper cover plate connecting block (61) through pins;
step 5, coating a plurality of layers of heat insulating materials on the outer surfaces of the superconducting magnet (5) and the support assembly (2);
step 6, placing the container body in a frame body (43), and hermetically connecting the frame body (43) with an upper container cover plate (6) and a lower container bottom plate (1) by using bolts (3) and sealing rings respectively;
step 7, connecting a current lead of the superconducting magnet (5) with a sealed wiring terminal (44) and connecting the current lead with a refrigerant transmission joint (42) through a pipeline;
step 8, coating a plurality of layers of heat insulating materials on the outer surface of the pipeline;
and 9, hermetically installing a transition plate provided with a sealing wiring terminal (44), a vacuumizing joint (41) and a refrigerant transmission joint (42) on a frame body (43) to obtain the modularized high-temperature superconducting magnet system.
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