A cooling pipe system

Abstract

The present invention belongs to the field of high-temperature superconducting technology and discloses a cooling pipeline system, including an input unit, an internal cooling unit, a circumferential cooling unit, an end cooling unit and an output unit. The internal cooling unit includes a plurality of coil cooling pipes arranged in parallel to achieve uniform cooling and temperature reduction inside the high-temperature superconducting magnet. The circumferential cooling unit includes a first circumferential cooling structure and a second circumferential cooling structure arranged in a central symmetrical manner to uniformly cool and temperature reduction along the circumference of the high-temperature superconducting magnet. The end cooling unit includes a first end cooling structure and a second end cooling structure respectively arranged at both ends of the high-temperature superconducting magnet to cool both ends of the high-temperature superconducting magnet. The cooling pipeline system can not only uniformly cool and temperature reduction inside the high-temperature superconducting magnet, but also cool the circumference and both ends of the high-temperature superconducting magnet, isolating the high-temperature superconducting magnet from the external temperature zone, effectively preventing heat leakage of the magnet, and providing a stable low-temperature environment for the high-temperature superconducting magnet.

Description

Technical Field

[0001] The present invention relates to the field of high-temperature superconducting technology, and in particular to a cooling pipeline system. Background Art

[0002] High-temperature superconducting magnets typically require an operating temperature of 30K-70K, necessitating a corresponding cooling system. Currently, the cooling methods for superconducting magnet cryogenic cooling systems are primarily conduction cooling and cryogenic medium immersion cooling. Conduction cooling is widely used due to its economical performance. Conduction cooling is further categorized as solid conduction cooling and pipeline cooling. Fixed conduction cooling requires a cooling head to be mounted on the magnet, which is not suitable in some environments.

[0003] The coil cooling pipeline systems disclosed in the prior art are mostly suitable for working environments of ±40°C and are mostly used for heat dissipation. They cannot provide a low-temperature environment for the superconducting magnet that is uniformly cooled and can be stably maintained. Summary of the Invention

[0004] The object of the present invention is to provide a cooling pipe system that can achieve overall uniform cooling of a high-temperature superconducting magnet and provide a stable low-temperature environment for the high-temperature superconducting magnet.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A cooling pipe system is provided for cooling a high-temperature superconducting magnet, wherein the high-temperature superconducting magnet comprises a main frame, a superconducting coil assembly, and a fixing cylinder. The superconducting coil assembly is arranged on the main frame, the superconducting coil assembly comprises a plurality of superconducting coils arranged in parallel, and the fixing cylinder is sleeved on the outside of the superconducting coil assembly.

[0007] The cooling pipe system includes:

[0008] an input unit configured to be connected to an external cooling system;

[0009] An internal cooling unit, comprising a plurality of coil cooling tubes arranged in parallel, each of the coil cooling tubes being connected to the input unit, and one coil cooling tube being sandwiched between two adjacent superconducting coils;

[0010] A circumferential cooling unit includes a first circumferential cooling structure and a second circumferential cooling structure arranged in a centrally symmetrical manner, wherein the first circumferential cooling structure includes a plurality of first circumferential cooling tubes, and the second circumferential cooling structure includes a plurality of second circumferential cooling tubes. The fixed cylinder is provided with a plurality of through holes spaced apart along the circumference, each of the through holes extending along the axis of the fixed cylinder, and the first circumferential cooling tubes and the second circumferential cooling tubes are disposed in corresponding through holes; each of the first circumferential cooling tubes is connected to the input unit;

[0011] An end cooling unit, comprising a first end cooling structure and a second end cooling structure respectively provided at both ends of the high-temperature superconducting magnet, wherein the first end cooling structure comprises a first heat exchange tube provided at the first end of the main frame, the first circumferential cooling tube being connected to the inlet of the first heat exchange tube, and the second circumferential cooling tube being connected to the outlet of the first heat exchange tube; the second end cooling structure comprises a second heat exchange tube provided at the second end of the main frame, a plurality of the second circumferential cooling tubes and a plurality of the coil cooling tubes being connected to the inlet of the second heat exchange tube;

[0012] The output unit is connected between the outlet of the second heat exchange tube and the external cooling system.

[0013] As an optional solution for the cooling pipe system, the internal cooling unit also includes multiple cold conduction plates, each of which is abutted between two adjacent superconducting coils, and each of which is provided with a fixed groove, and the multiple coil cooling pipes are embedded in the multiple fixed grooves one by one.

[0014] As an optional solution for the cooling pipe system, the first end cooling structure further includes a first heat exchange ring, the first heat exchange ring is fixed to the first end of the main frame, and the first heat exchange tube is annularly arranged on the outer peripheral wall of the first heat exchange ring;

[0015] The second end cooling structure further includes a second heat exchange ring, which is fixed to the second end of the main frame, and the second heat exchange tube is arranged on the outer peripheral wall of the second heat exchange ring.

[0016] As an optional solution for the cooling pipe system, spiral grooves are provided on the outer peripheral walls of the first heat exchange ring and the second heat exchange ring, and the first heat exchange tube and the second heat exchange tube abut against the corresponding spiral grooves.

[0017] As an optional solution for the cooling pipe system, spiral grooves are provided on the outer peripheral walls of the first heat exchange ring and the second heat exchange ring, and the first heat exchange tube and the second heat exchange tube abut against the corresponding spiral grooves.

[0018] As an optional solution for the cooling pipeline system, the first end cooling structure further includes a first heat insulation plate, which is arranged between the first end of the main frame and the first heat exchange ring;

[0019] The second end cooling structure further includes a second heat insulation plate, which is arranged between the second end of the main skeleton and the second heat exchange ring.

[0020] As an optional solution for the cooling pipe system, the input unit includes:

[0021] A main input pipe connected to the external cooling system;

[0022] A plurality of shunt pipes are all connected to the outlet of the main input pipe, and the outlet of each shunt pipe is connected to the corresponding coil cooling pipe and the corresponding first circumferential cooling pipe.

[0023] As an optional solution for the cooling pipe system, the circumferential cooling unit also includes a converging cooling pipe and a diverging cooling pipe. The converging cooling pipe is arranged between the outlets of the multiple first circumferential cooling pipes and the inlets of the first heat exchange pipes; the diverging cooling pipe is arranged between the outlets of the first heat exchange pipes and the inlets of the multiple second circumferential cooling pipes.

[0024] As an optional solution for the cooling pipe system, the coil cooling pipe is U-shaped.

[0025] As an optional solution of the cooling pipeline system, the cooling pipeline system further includes a magnet dewar, the magnet dewar is surrounded by a vacuum cavity, and the high-temperature superconducting magnet, the input unit, the internal cooling unit, the circumferential cooling unit, the end cooling unit and the output unit are all arranged in the vacuum cavity;

[0026] The magnet dewar is provided with an escape hole for allowing the input unit and the output unit to communicate with the external cooling system.

[0027] Beneficial effects of the present invention:

[0028] The present invention provides a cooling pipe system for cooling a high-temperature superconducting magnet. The cooling pipe system includes an input unit, an internal cooling unit, a circumferential cooling unit, an end cooling unit, and an output unit. The input unit is configured to connect to an external cooling system. The internal cooling unit includes multiple coil cooling tubes arranged in parallel, each of which is connected to the input unit. A coil cooling tube is sandwiched between two adjacent superconducting coils to achieve uniform cooling of the high-temperature superconducting magnet. The circumferential cooling unit includes a first circumferential cooling structure and a second circumferential cooling structure arranged symmetrically around the center. The first circumferential cooling structure includes multiple first circumferential cooling tubes, and the second circumferential cooling structure includes multiple second circumferential cooling tubes. A fixed cylinder is provided with multiple through-holes spaced circumferentially, each of which extends along the axis of the fixed cylinder. The first circumferential cooling tubes and the second circumferential cooling tubes are disposed within corresponding through-holes, and each first circumferential cooling tube is connected to the input unit to uniformly cool the high-temperature superconducting magnet along its circumference. The end cooling unit includes a first end cooling structure and a second end cooling structure, respectively, located at both ends of the high-temperature superconducting magnet. The first end cooling structure includes a first heat exchange tube located at the first end of the main frame, a first circumferential cooling tube connected to the inlet of the first heat exchange tube, and a second circumferential cooling tube connected to the outlet of the first heat exchange tube. The second end cooling structure includes a second heat exchange tube located at the second end of the main frame, and multiple second circumferential cooling tubes and multiple coil cooling tubes are all connected to the inlet of the second heat exchange tube.

[0029] The cooling medium entering the input unit from the external cooling system flows directly into the multiple coil cooling tubes for internal cooling of the high-temperature superconducting magnet. The remaining portion flows into the multiple first circumferential cooling tubes for circumferential cooling of the high-temperature superconducting magnet. After exiting the multiple first circumferential cooling tubes, the cooling medium enters the first heat exchange tubes to cool the first end of the high-temperature superconducting magnet. The cooling medium then flows through the first heat exchange tubes into the multiple second circumferential cooling tubes, further cooling the magnet along its circumference. Finally, the cooling medium in the multiple second circumferential cooling tubes and the multiple coil cooling tubes enters the second heat exchange tubes to cool the second end of the high-temperature superconducting magnet. The output unit is connected between the outlet of the second heat exchange tubes and the external cooling system. This cooling pipe system can uniformly cool the interior of the high-temperature superconducting magnet, as well as the circumference and both ends of the magnet. It also effectively isolates the magnet from the external temperature zone, effectively reducing heat leakage from the magnet, providing a stable low-temperature environment for the magnet and ensuring its thermal stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an exploded view of a high-temperature superconducting magnet provided in an embodiment of the present invention;

[0031] Figure 2It is a schematic diagram of the overall structure of the cooling pipe system and the high-temperature superconducting magnet provided in a specific embodiment of the present invention;

[0032] Figure 3 An exploded diagram of a cooling pipe system and a high-temperature superconducting magnet provided in an embodiment of the present invention;

[0033] Figure 4 This is an exploded view of a cooling pipe system and a high-temperature superconducting magnet provided in a specific embodiment of the present invention, with some structures omitted;

[0034] Figure 5 Schematic diagram of the structure of a high-temperature superconducting magnet and an internal cooling unit (cold plate omitted) provided in a specific embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of the overall structure of the cooling pipeline system provided by the specific embodiment of the present invention;

[0036] Figure 7 This is a schematic structural diagram of a cooling pipe system provided in an embodiment of the present invention, with some structures omitted;

[0037] Figure 8 It is a structural schematic diagram of a magnet Dewar provided in a specific embodiment of the present invention.

[0038] In the picture:

[0039] 100, high-temperature superconducting magnet; 101, main frame; 102, superconducting coil assembly; 103, fixing cylinder; 1031, through hole;

[0040] 1. Input unit; 11. Main input pipe; 12. Diverter pipe;

[0041] 2. Internal cooling unit; 21. Coil cooling pipe;

[0042] 3. Circumferential cooling unit;

[0043] 31. First circumferential cooling structure; 311. First circumferential cooling pipe; 312. First flow divider; 313. First flow confluence member;

[0044] 32. Second circumferential cooling structure; 321. Second circumferential cooling pipe; 322. Second flow divider; 323. Second flow confluence member;

[0045] 33. Converging cooling pipe; 34. Diverting cooling pipe; 35. Connecting pipe;

[0046] 4. End cooling unit;

[0047] 41. First end cooling structure; 411. First heat exchange tube; 412. First heat exchange ring; 4121. Avoidance groove; 413. First heat insulation plate;

[0048] 42. Second end cooling structure; 421. Second heat exchange tube; 422. Second heat exchange ring; 423. Second heat insulation plate;

[0049] 5. Magnet Dewar; 51. Avoidance hole. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0051] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0053] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0054] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0055] This embodiment provides a cooling pipeline system for cooling a high-temperature superconducting magnet 100. Figure 1 As shown, the high-temperature superconducting magnet 100 includes a main frame 101, a superconducting coil assembly 102, and a fixing barrel 103. The superconducting coil assembly 102 is mounted on the main frame 101 and includes multiple parallel superconducting coils. The fixing barrel 103 is sleeved around the outer side of the superconducting coil assembly 102. Specifically, in this embodiment, multiple superconducting coils are symmetrically arranged on both sides of the main frame 101. Each superconducting coil is annular, and adjacent superconducting coils have different sizes.

[0056] like Figures 2 to 8 As shown, the cooling pipeline system includes an input unit 1, an internal cooling unit 2, a circumferential cooling unit 3, an end cooling unit 4, and an output unit. The input unit 1 is configured to connect to an external cooling system. The internal cooling unit 2 includes multiple parallel coil cooling tubes 21, each of which is connected to the input unit 1. A coil cooling tube 21 is sandwiched between two adjacent superconducting coils to achieve uniform cooling within the high-temperature superconducting magnet 100. The circumferential cooling unit 3 includes a first circumferential cooling structure 31 and a second circumferential cooling structure 32 that are arranged in a centrally symmetrical manner. The first circumferential cooling structure 31 includes a plurality of first circumferential cooling tubes 311, and the second circumferential cooling structure 32 includes a plurality of second circumferential cooling tubes 321. The fixed cylinder 103 is provided with a plurality of through holes 1031 spaced apart along the circumference, and each through hole 1031 extends along the axial direction of the fixed cylinder 103. The first circumferential cooling tube 311 and the second circumferential cooling tube 321 are passed through the corresponding through holes 1031, and each first circumferential cooling tube 311 is connected to the input unit 1 to uniformly cool the high-temperature superconducting magnet 100 along its circumference. The end cooling unit 4 includes a first end cooling structure 41 and a second end cooling structure 42, respectively, disposed at both ends of the high-temperature superconducting magnet 100. The first end cooling structure 41 includes a first heat exchange tube 411 disposed at the first end of the main frame 101. The first circumferential cooling tube 311 is connected to the inlet of the first heat exchange tube 411, and the second circumferential cooling tube 321 is connected to the outlet of the first heat exchange tube 411. The second end cooling structure 42 includes a second heat exchange tube 421 disposed at the second end of the main frame 101. Multiple second circumferential cooling tubes 321 and multiple coil cooling tubes 21 are all connected to the inlet of the second heat exchange tube 421.

[0057] A portion of the cooling medium entering the input unit 1 from the external cooling system directly enters the multiple coil cooling tubes 21 for internal cooling of the high-temperature superconducting magnet 100. Another portion enters the multiple first circumferential cooling tubes 311 for circumferential cooling of the high-temperature superconducting magnet 100. After flowing out of the multiple first circumferential cooling tubes 311, the cooling medium enters the first heat exchange tube 411 to cool the first end of the high-temperature superconducting magnet 100. The cooling medium then flows through the first heat exchange tube 411 into the multiple second circumferential cooling tubes 321, further cooling the high-temperature superconducting magnet 100 along its circumference. Finally, the cooling medium in both the multiple second circumferential cooling tubes 321 and the multiple coil cooling tubes 21 enters the second heat exchange tube 421 to cool the second end of the high-temperature superconducting magnet 100. An output unit (not shown) is connected between the outlet of the second heat exchange tube 421 and the external cooling system. This cooling pipe system can not only uniformly cool the interior of the high-temperature superconducting magnet 100, but also cool the circumference and both ends of the high-temperature superconducting magnet 100, isolating the high-temperature superconducting magnet 100 from the external temperature zone, effectively preventing heat leakage from the magnet, and providing a stable low-temperature environment for the high-temperature superconducting magnet 100.

[0058] Specifically, if Figure 4As shown, in this embodiment, the circumferential cooling unit 3 includes two first circumferential cooling structures 31 and two second circumferential cooling structures 32. The two first circumferential cooling structures 31 and the two second circumferential cooling structures 32 are staggered and centrally symmetrically arranged on the outside of the high-temperature superconducting magnet 100. Among them, the first circumferential cooling structure 31 also includes a first diverter 312 and a first merging piece 313. The first diverter 312 is arranged at the second end of the main skeleton 101, and the inlets of multiple first coil cooling tubes 21 and the inlets of multiple first circumferential cooling tubes 311 are all connected to the first diverter 312. Under the diversion effect of the first diverter 312, the cooling medium in the input unit 1 can be sent to the coil cooling tube 21 and the first circumferential cooling tube 311; the first merging piece 313 is arranged at the first end of the main skeleton 101, and the outlets of multiple first coil cooling tubes 21 are connected to the first merging piece 313. Under the merging effect of the first merging piece 313, the cooling medium in multiple first coil cooling tubes 21 can be simultaneously sent into the first heat exchange tube 411. The second circumferential cooling structure 32 also includes a second diverter 322 and a second merging piece 323. The second diverter 322 is arranged at the first end of the main skeleton 101, and the inlets of multiple second circumferential cooling tubes 321 are connected to the second diverter 322. Under the diversion effect of the second diverter 322, the cooling medium in the first heat exchange tube 411 can be diverted to the multiple second circumferential cooling tubes 321; the second merging piece 323 is arranged at the second end of the main skeleton 101, and the outlets of multiple second circumferential cooling tubes 321 are connected to the second merging piece 323. Under the merging effect of the second merging piece 323, the cooling medium in multiple second circumferential cooling tubes 321 can be simultaneously delivered to the second heat exchange tube 421.

[0059] Illustratively, each first circumferential cooling structure 31 includes two first circumferential cooling tubes 311, and each second circumferential cooling structure 32 includes two second circumferential cooling tubes 321, so as to achieve more uniform cooling and lowering of the circumference of the high-temperature superconducting magnet 100; in other embodiments, the number of the first circumferential cooling tubes 311 and the second circumferential cooling tubes 321 can also be set to three, four or even more, and the specific number can be set as needed and is not specifically limited here.

[0060] Furthermore, in this embodiment, the first flow diverter 312 , the first flow converging member 313 , the second flow diverter 322 , and the second flow converging member 323 are all arranged in a V-shape, which provides good structural stability.

[0061] Specifically, continue to refer to Figure 4 A connecting pipe 35 is provided on the side of the second confluence piece 323 away from the main skeleton 101, and the connecting pipe 35 is connected between the second diverter piece 322 and the inlet of the second heat exchange tube 421 to deliver the cooling medium in the multiple second circumferential cooling tubes 321 into the second heat exchange tube 421.

[0062] Alternatively, as Figure 6 As shown, the circumferential cooling unit 3 also includes a converging cooling pipe 33 and a diverting cooling pipe 34. The converging cooling pipe 33 is disposed between the outlets of the plurality of first circumferential cooling pipes 311 and the inlet of the first heat exchange pipe 411 to deliver the cooling medium in the plurality of first circumferential cooling pipes 311 into the first heat exchange pipe 411. The diverting cooling pipe 34 is disposed between the outlets of the first heat exchange pipe 411 and the inlet of the plurality of second circumferential cooling pipes 321 to divert the cooling medium in the first heat exchange pipe 411 into the plurality of second circumferential cooling pipes 321. Specifically, in this embodiment, the converging cooling pipe 33 is disposed between the inlet of the first heat exchange pipe 411 and the first converging piece 313, and the diverting cooling pipe 34 is disposed between the outlet of the first heat exchange pipe 411 and the second diverting piece 322. This arrangement ensures that the plurality of second circumferential cooling pipes 321 can simultaneously and uniformly cool the circumference of the high-temperature superconducting magnet, thereby ensuring uniform circumferential cooling.

[0063] Specifically, in this embodiment, two converging cooling pipes 33 and two diverting cooling pipes 34 are provided. The two converging cooling pipes 33 are connected to the first converging parts 313 of the two first circumferential cooling structures 31 in a one-to-one correspondence, and the two diverting cooling pipes 34 are connected to the second diverting parts 322 of the two second circumferential cooling structures 32 in a one-to-one correspondence.

[0064] Specifically, the cooling medium can be a medium capable of cooling and lowering the temperature, such as cold water, liquid helium, or liquid nitrogen. In this embodiment, liquid helium is preferably used, as it has the advantages of low surface tension, high thermal conductivity, low viscosity, and stable chemical properties.

[0065] Optionally, continue with reference to Figure 6 The coil cooling tube 21 is U-shaped. The above arrangement can be more compatible with the annular superconducting coil, and the U-shaped coil cooling tube 21 is reliable in operation and low in cost.

[0066] Alternatively, as Figure 7 As shown, the input unit 1 includes a main input pipe 11 and multiple branch pipes 12. The main input pipe 11 is connected to the external cooling system. The multiple branch pipes 12 are all connected to the outlet of the main input pipe 11. The inlet of each branch pipe 12 is connected to the corresponding coil cooling pipe 21 and the corresponding first circumferential cooling pipe 311. Specifically, in this embodiment, each branch pipe 12 is connected to a corresponding first diverter 312. Under the diversion effect of the first diverter 312, the cooling medium can be delivered to the corresponding coil cooling pipe 21 and the first circumferential cooling pipe 311.

[0067] Optionally, the internal cooling unit 2 further includes a plurality of cold plates (not shown), each of which abuts between two adjacent superconducting coils. Each cold plate has a fixed slot, and the plurality of coil cooling tubes 21 are embedded in the fixed slots in a one-to-one correspondence. The cooling energy from the coil cooling tubes 21 is transferred to the cold plates, and then to the superconducting coils via the cold plates, effectively increasing the heat exchange area and improving uniform cooling of the interior of the high-temperature superconducting magnet 100.

[0068] Alternatively, as Figure 3 and Figure 4 As shown, the first end cooling structure 41 further includes a first heat exchange ring 412, which is fixed to the first end of the main frame 101, and a first heat exchange tube 411 is arranged around the outer circumferential wall of the first heat exchange ring 412. The second end cooling structure 42 further includes a second heat exchange ring 422, which is fixed to the second end of the main frame 101, and a second heat exchange tube 421 is arranged around the outer circumferential wall of the second heat exchange ring 422. The arrangement of the first heat exchange ring 412 and the second heat exchange ring 422 can increase the heat exchange area of ​​the first heat exchange tube 411 and the second heat exchange tube 421, effectively improving the isolation effect between the two ends of the high-temperature superconducting magnet 100 and the external temperature zone.

[0069] Further, continue to refer to Figure 3 and Figure 4 The outer walls of the first heat exchange ring 412 and the second heat exchange ring 422 are each provided with a spiral groove, and the first heat exchange tube 411 and the second heat exchange tube 421 abut against the corresponding spiral groove. The provision of the spiral groove increases the contact area between the first heat exchange ring 412 and the first heat exchange tube 411, as well as the contact area between the second heat exchange ring 422 and the second heat exchange tube 421, thereby improving the cooling effect at both ends of the high-temperature superconducting magnet 100.

[0070] Specifically, because the cooling medium flow rate in the first heat exchange tube 411 is smaller than the cooling medium flow rate in the second heat exchange tube 421, the inner diameter of the first heat exchange tube 411 is also smaller than the inner diameter of the second heat exchange tube 421. Accordingly, the size of the spiral groove on the first heat exchange ring 412 is also smaller than the size of the spiral groove on the second heat exchange ring 422.

[0071] Optionally, a plurality of escape grooves 4121 are provided at both ends of the first heat exchange ring 412 and the second heat exchange ring 422. The escape grooves 4121 are used to allow the first heat exchange tube 411 and the second heat exchange tube 421 to pass through. The provision of the escape grooves 4121 facilitates the connection between the inlet of the first heat exchange tube 411 and the merging cooling tube 33, the connection between the outlet of the first heat exchange tube 411 and the diverging cooling tube 34, and the connection between the second heat exchange tube 421 and the connecting tube 35.

[0072] Alternatively, as Figure 3As shown, the first end cooling structure 41 further includes a first thermal insulation disk 413, which is disposed between the first end of the main frame 101 and the first heat exchange ring 412. The second end cooling structure 42 further includes a second thermal insulation disk 423, which is disposed between the second end of the main frame 101 and the second heat exchange ring 422. The provision of the first thermal insulation disk 413 and the second thermal insulation disk 423 can further enhance the isolation effect between the high-temperature superconducting magnet 100 and the external temperature zone, providing a stable low-temperature environment for the high-temperature superconducting magnet 100.

[0073] Specifically, the first heat exchange ring 412 is detachably mounted on the first heat insulation plate 413 by bolts, and the second heat exchange ring 422 is also detachably mounted on the second heat insulation plate 423 by bolts. Furthermore, the first heat insulation plate 413 and the second heat insulation plate 423 are connected to the first and second ends of the main frame 101 in a one-to-one correspondence.

[0074] For example, in this embodiment, the first insulation plate 413 and the second insulation plate 423 are both circular; in other embodiments, the first insulation plate 413 and the second insulation plate 423 may also be other shapes, which are not specifically limited here.

[0075] Optionally, the cooling pipe system further comprises a magnet dewar 5. Figure 8 As shown, the magnet dewar 5 is surrounded by a vacuum chamber. The high-temperature superconducting magnet 100, input unit 1, internal cooling unit 2, circumferential cooling unit 3, end cooling unit 4, and output unit are all located within the vacuum chamber. This further isolates the high-temperature superconducting magnet from the external temperature zone, further reducing heat leakage from the magnet radiation, and facilitating the maintenance of a stable and balanced low-temperature environment. A relief hole 51 is provided in the magnet dewar 5, allowing the input unit 1 and output unit to connect to the external cooling system, facilitating the circulation of the cooling medium.

[0076] Specifically, the magnet dewar 5 is a structure that has been disclosed in the prior art. The specific structure and principle are referred to the prior art and will not be described in detail here.

[0077] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cooling pipe system for cooling a high-temperature superconducting magnet (100), wherein the high-temperature superconducting magnet (100) comprises a main frame (101), a superconducting coil assembly (102) and a fixing cylinder (103), wherein the superconducting coil assembly (102) is arranged on the main frame (101), the superconducting coil assembly (102) comprises a plurality of superconducting coils arranged in parallel, and the fixing cylinder (103) is sleeved on the outside of the superconducting coil assembly (102); It is characterized in that The cooling pipeline system includes: An input unit (1) is configured to be connected to an external cooling system; An internal cooling unit (2) includes a plurality of coil cooling pipes (21) arranged in parallel, each of the coil cooling pipes (21) is connected to the input unit (1), and one coil cooling pipe (21) is sandwiched between two adjacent superconducting coils; A circumferential cooling unit (3) comprises a first circumferential cooling structure (31) and a second circumferential cooling structure (32) which are centrally symmetrically arranged, wherein the first circumferential cooling structure (31) comprises a plurality of first circumferential cooling tubes (311), and the second circumferential cooling structure (32) comprises a plurality of second circumferential cooling tubes (321), the fixed cylinder (103) is provided with a plurality of through holes (1031) spaced apart along the circumference, each of the through holes (1031) extending along the axis direction of the fixed cylinder (103), and the first circumferential cooling tube (311) and the second circumferential cooling tube (321) are passed through the corresponding through holes (1031); and each of the first circumferential cooling tubes (311) is connected to the input unit (1); An end cooling unit (4) comprises a first end cooling structure (41) and a second end cooling structure (42) respectively arranged at both ends of the high-temperature superconducting magnet (100); the first end cooling structure (41) comprises a first heat exchange tube (411) arranged at the first end of the main skeleton (101), the first circumferential cooling tube (311) is connected to the inlet of the first heat exchange tube (411), and the second circumferential cooling tube (321) is connected to the outlet of the first heat exchange tube (411); the second end cooling structure (42) comprises a second heat exchange tube (421) arranged at the second end of the main skeleton (101), and a plurality of the second circumferential cooling tubes (321) and a plurality of the coil cooling tubes (21) are all connected to the inlet of the second heat exchange tube (421); The output unit is connected between the outlet of the second heat exchange tube (421) and the external cooling system.

2. The cooling pipe system according to claim 1, characterized in that: The internal cooling unit (2) further comprises a plurality of cooling plates, each of which is in contact with two adjacent superconducting coils, and each of which is provided with a fixing groove, wherein the plurality of coil cooling tubes (21) are embedded in the plurality of fixing grooves in a one-to-one correspondence.

3. The cooling pipe system according to claim 1, characterized in that: The first end cooling structure (41) further includes a first heat exchange ring (412), the first heat exchange ring (412) being fixed to the first end of the main frame (101), and the first heat exchange tube (411) being arranged on the outer peripheral wall of the first heat exchange ring (412); The second end cooling structure (42) further includes a second heat exchange ring (422), the second heat exchange ring (422) being fixedly mounted on the second end of the main frame (101), and the second heat exchange tube (421) being arranged on the outer peripheral wall of the second heat exchange ring (422).

4. The cooling pipe system according to claim 3, characterized in that: Spiral grooves are provided on the outer peripheral walls of the first heat exchange ring (412) and the second heat exchange ring (422), and the first heat exchange tube (411) and the second heat exchange tube (421) are in contact with the corresponding spiral grooves.

5. The cooling pipe system according to claim 3, characterized in that: A plurality of avoidance grooves (4121) are provided at both ends of the first heat exchange ring (412) and the second heat exchange ring (422), and the avoidance grooves (4121) are used to allow the first heat exchange tube (411) and the second heat exchange tube (421) to pass through.

6. The cooling pipe system according to claim 3, characterized in that: The first end cooling structure (41) further includes a first heat insulation plate (413), and the first heat insulation plate (413) is arranged between the first end of the main frame (101) and the first heat exchange ring (412); The second end cooling structure (42) further includes a second heat insulation plate (423), and the second heat insulation plate (423) is arranged between the second end of the main frame (101) and the second heat exchange ring (422).

7. The cooling pipe system according to any one of claims 1 to 6, characterized in that: The input unit (1) comprises: A main input pipe (11) connected to the external cooling system; A plurality of shunt pipes (12) are all connected to the outlet of the main input pipe (11), and the outlet of each shunt pipe (12) is connected to the corresponding coil cooling pipe (21) and the corresponding first circumferential cooling pipe (311).

8. The cooling pipe system according to any one of claims 1 to 6, characterized in that: The circumferential cooling unit (3) further comprises a converging cooling pipe (33) and a diverging cooling pipe (34), wherein the converging cooling pipe (33) is arranged between the outlets of the plurality of first circumferential cooling pipes (311) and the inlet of the first heat exchange pipe (411); and the diverging cooling pipe (34) is arranged between the outlet of the first heat exchange pipe (411) and the inlet of the plurality of second circumferential cooling pipes (321).

9. The cooling pipe system according to any one of claims 1 to 6, characterized in that: The coil cooling pipe (21) is U-shaped.

10. The cooling pipe system according to any one of claims 1 to 6, characterized in that: The cooling pipeline system further comprises a magnet dewar (5), wherein the magnet dewar (5) is surrounded by a vacuum cavity, and the high-temperature superconducting magnet (100), the input unit (1), the internal cooling unit (2), the circumferential cooling unit (3), the end cooling unit (4) and the output unit are all arranged in the vacuum cavity; The magnet dewar (5) is provided with an avoidance hole (51) that allows the input unit (1) and the output unit to communicate with the external cooling system.

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