Superconducting coil joint device, superconducting coil unit and medical equipment thereof

Abstract

The utility model relates to the technical field of superconducting, in particular to a superconducting coil connector device, a superconducting coil unit and medical equipment thereof. A superconducting coil joint device is used for connecting at least two superconducting coils, and comprises a to-be-cooled component used for accommodating a low-temperature superconducting material and allowing a part of the superconducting coils to extend into; the first cold guide column is used for being connected with a cold source; one end of the second cold conduction column is mounted in the to-be-cooled component and is in contact with the low-temperature superconducting material, and the other end of the second cold conduction column is arranged by keeping a preset distance from the low-temperature superconducting material in the to-be-cooled component; and the insulating cold conduction piece is located between the ends, away from the to-be-cooled component, of the first cold conduction column and the second cold conduction column, and connects the first cold conduction column with the second cold conduction column, so that the cooling capacity of the cold source is transmitted to the second cold conduction column through the first cold conduction column. The device has the advantages that the first cold conduction column and the second cold conduction column can keep a low-temperature environment in the to-be-cooled component, so that connection between two superconducting coils is realized.

Description

Technical Field

[0001] The present application relates to the field of superconducting technology, and in particular to a superconducting coil joint device, a superconducting coil unit and medical equipment thereof. Background Art

[0002] Existing superconducting magnetic resonance magnets immerse superconducting coils in liquid helium to make the superconducting wire become superconducting. However, liquid helium is an expensive and non-renewable strategic resource. Every time the superconducting magnet is excited or quenched, it will result in the loss of liquid helium. Therefore, the exploration of liquid helium-free superconducting magnets is becoming more and more urgent.

[0003] In existing liquid helium-free magnets, the superconducting coils are no longer immersed in liquid helium. In order to maintain the low temperature of the superconducting coils, the refrigeration source needs to be connected to the superconducting coils to maintain the low temperature of the superconducting coils. However, the superconducting joints between the coils are difficult to connect because the superconducting wire is relatively thin and a reliable cooling insulation structure cannot be installed on the wire. Utility Model Content

[0004] Based on this, the utility model provides a superconducting coil joint device.

[0005] A superconducting coil joint device is used to connect at least two superconducting coils, and the superconducting coil joint device includes: a component to be cooled, used to accommodate low-temperature superconducting material; a first cooling column, used to connect a cold source; a second cooling column, one end of the second cooling column is installed in the component to be cooled and contacts with the low-temperature superconducting material, and the other end of the second cooling column is connected to the first cooling column; an insulating cooling component is located between the first cooling column and the second cooling column, and connects the first cooling column and the second cooling column.

[0006] With such arrangement, the low-temperature superconducting material in the component to be cooled can ensure the connectivity of the superconducting coil in a low-temperature environment, and the end of the superconducting coil extending into the component to be cooled is equivalent to being completely wrapped by the low-temperature superconducting material, so the contact between the two is stable and reliable, and the first cooling column and the second cooling column are connected by the insulating cooling column, so the cold on the cold source can be transferred to the second cooling column through the first cooling column, and then the low-temperature superconducting material in the component to be cooled is cooled by the second cooling column, thereby providing a low-temperature environment for the superconducting coil, and the insulating thermal conductive part has insulating properties, which can prevent the current between the superconducting coils from being transferred to the cold source through the superconducting low-temperature medium, the second cooling column and the first cooling column, causing damage to the cold source.

[0007] In one embodiment, the insulating cooling member includes an insulating layer and metal layers disposed on two opposite sides of the insulating layer, and the first cooling column and the second cooling column are respectively connected to the corresponding metal layers.

[0008] In one embodiment, the superconducting coil joint device also includes a first detachable part, which can detachably connect the first cooling column, the insulating cooling column, and the second cooling column, and the first detachable part is insulated from the first cooling column and / or the second cooling column.

[0009] In one embodiment, the first detachable member includes any one of a threaded connection and a snap-on connection.

[0010] In one embodiment, the first detachable member comprises:

[0011] An insulating sleeve, installed in the first cooling column;

[0012] A first threaded component, one end of which is in contact with the first cooling column through the insulating sleeve, and the other end of which extends into the second cooling column and is threadedly connected with the second cooling column.

[0013] In one embodiment, a first connecting hole is provided in the first cooling column, a step is provided on the hole wall of the first connecting hole, and the insulating sleeve is positioned in the first connecting hole through the step.

[0014] In one embodiment, a ring groove is formed on a side of the second cooling column facing the first cooling column, and one end of the insulating sleeve extends into the ring groove through the first connecting hole and the third connecting hole;

[0015] The insulating sleeve extends into one end of the annular groove along the axial direction of the second cooling column, and is spaced apart from the bottom surface of the annular groove.

[0016] In one embodiment, the superconducting coil joint device further includes:

[0017] A cooling belt, one end of which is connected to the first cooling column, and the other end of which is used to connect to a cooling source, so that the cooling energy of the cooling source is transferred to the first cooling column through the cooling belt.

[0018] In one embodiment, a cooling member is connected to the first cooling column, a portion of the cooling member extends into the first cooling column, and the cooling belt is wrapped around the outer periphery of the cooling member and connected to the cooling member.

[0019] The component to be cooled includes a superconducting cup body, in which a low-temperature superconducting material is accommodated; or, the component to be cooled includes a superconducting cup body and a conduction-cooling adapter block, in which a low-temperature superconducting material is accommodated, the conduction-cooling adapter block is connected to the low-temperature superconducting material, and the conduction-cooling adapter block is connected to the second conduction-cooling column.

[0020] The utility model also provides a superconducting coil unit, comprising the superconducting coil joint device as described above, wherein the superconducting coil unit further comprises a superconducting switch, wherein the superconducting coil joint device is arranged in at least two groups, and a plurality of the superconducting coils and the superconducting switch are arranged between the two groups of the superconducting coil joint devices, and the plurality of the superconducting coils and the superconducting switch are arranged in parallel.

[0021] The utility model also provides a medical device, comprising the superconducting coil unit as described above.

[0022] Compared with the prior art, the utility model ensures the connectivity of the superconducting coil in a low-temperature environment through the low-temperature superconducting material in the component to be cooled, and the end of the superconducting coil extending into the component to be cooled is equivalent to being completely wrapped by the low-temperature superconducting material, so the contact between the two is stable and reliable, and the first cooling column and the second cooling column are connected by the insulating cooling column, so the cold on the cold source can be transferred to the second cooling column through the first cooling column, and then the low-temperature superconducting material in the component to be cooled is cooled by the second cooling column, thereby providing a low-temperature environment for the superconducting coil, and the insulating heat-conducting component has insulating properties, which can prevent the current between the superconducting coils from being transferred to the cold source through the superconducting low-temperature medium, the second cooling column and the first cooling column to cause damage to the cold source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of a superconducting coil joint device provided in one embodiment of the present application;

[0025] Figure 2 A cross-sectional view of a superconducting coil joint device provided in one embodiment of the present application;

[0026] Figure 3 A cross-sectional schematic diagram of an insulating cooling member provided in one embodiment of the present application;

[0027] Figure 4 A cross-sectional view of a superconducting coil joint device provided in one embodiment of the present application;

[0028] Figure 5 A schematic structural diagram of a superconducting coil unit provided in one of the embodiments of the present application.

[0029] 1. The superconducting coil joint device includes: 100, a superconducting coil joint device; 10, a component to be cooled; 11, a superconducting cup body; 12, a cooling adapter block; 121, a connecting section; 122, an expanded diameter section; 20, a first cooling column; 21, a first connecting hole; 211, a step; 30, a second cooling column; 31, a second connecting hole; 32, an annular groove; 40, an insulating cooling member; 41, an insulating layer; 42, a metal layer; 43, a third connecting hole; 50, a first detachable member; 51, an insulating sleeve; 52, a first threaded member; 53, a gasket; 60, a second detachable member; 70, a cold source; 71, a cooling belt; 72, a cooling member; 80, a superconducting coil; 90, a superconducting switch; 200, a superconducting coil unit. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0035] See also Figure 1 to Figure 2 The utility model provides a superconducting coil joint device 100, which is used to connect at least two superconducting coils 80, and can simultaneously meet the low-temperature operating environment of the superconducting coil 80 and the stable connection between the two superconducting coils 80.

[0036] Specifically, the superconducting coil joint device 100 includes a component to be cooled 10, a first cooling column 20, a second cooling column 30 and an insulating cooling member 40. The component to be cooled 10 is used to accommodate low-temperature superconducting material and allow part of the superconducting coil 80 to extend into. The first cooling column 20 is used to connect the cold source 70. One end of the second cooling column 30 is installed in the component to be cooled 10 and contacts with the low-temperature superconducting material. The other end of the second cooling column 30 is set to maintain a preset distance from the low-temperature superconducting material in the component to be cooled 10. The insulating cooling member 40 is located between the first cooling column 20 and the second cooling column 30 away from one end of the component to be cooled 10, and connects the first cooling column 20 and the second cooling column 30 so that the cold energy of the cold source 70 is transferred to the second cooling column 30 via the first cooling column 20.

[0037] In this way, the low-temperature superconducting material in the component to be cooled 10 can ensure the connectivity of the superconducting coil 80 in a low-temperature environment, and the end of the superconducting coil 80 extending into the component to be cooled 10 is equivalent to being completely wrapped by the low-temperature superconducting material, so the contact between the two is stable and reliable, and the first cooling column 20 and the second cooling column 30 are connected by the insulating cooling component 40, so the cold on the cold source 70 can be transferred to the second cooling column 30 through the first cooling column 20, and then the low-temperature superconducting material in the component to be cooled 10 is cooled by the second cooling column 30, thereby providing a low-temperature environment for the superconducting coil 80, and the insulating thermal conductive component has insulating properties, which can prevent the current between the superconducting coils 80 from being transferred to the cold source 70 through the superconducting low-temperature medium, the second cooling column 30 and the first cooling column 20, causing damage to the cold source 70.

[0038] The component to be cooled 10 includes a superconducting cup 11, and a low-temperature superconducting material is contained in the superconducting cup 11. For example, the low-temperature superconducting material is a superconducting alloy, which has a solidifying property and can be fixedly connected to the second cooling column 30 after solidification.

[0039] Exemplarily, the superconducting alloy is lead-mystal alloy, Wood's alloy, etc. In other embodiments, the superconducting alloy may also be other materials that exhibit zero resistance and the property of repelling magnetic lines of force under low temperature conditions.

[0040] See also Figure 4 In another embodiment, the component to be cooled 10 includes a superconducting cup 11 and a conduction-cooling adapter block 12. The superconducting cup 11 still contains a low-temperature superconducting material. The conduction-cooling adapter block 12 is connected to the low-temperature superconducting material, and the conduction-cooling adapter block 12 is connected to the second conduction-cooling column 30. The conduction-cooling adapter block 12 can increase the contact area between the second conduction-cooling column 30 and the low-temperature superconducting material to improve the conduction-cooling effect.

[0041] Furthermore, the cooling adapter block 12 includes a connecting section 121 connected to the second cooling column 30 and an expanded diameter section 122 connected to the connecting section 121. The diameter of the expanded diameter section 122 is larger than that of the connecting section 121, and after the low-temperature superconducting material contained in the superconducting cup body 11 solidifies into a solid, the contact area between the expanded diameter section 122 and the superconducting cup body 11 is large, and the connection strength is high.

[0042] like Figure 3 As shown, the insulating cooling member 40 includes an insulating layer 41 and metal layers 42 disposed on two opposite sides of the insulating layer 41, and the first cooling column 20 and the second cooling column 30 are respectively connected to the corresponding metal layers 42. The insulating layer 41 separates the two metal layers 42 to ensure the insulating properties of the insulating cooling member 40, and the metal layer 42 is used to connect with the first cooling column 20 and the second cooling column 30, which are also made of metal.

[0043] In this embodiment, the insulating layer 41 is set to an aluminum nitride ceramic sheet. The aluminum nitride material has the characteristics of high thermal conductivity, low dielectric constant, thermal expansion coefficient matching that of silicon, high resistance, low density, etc., and has good thermochemical stability and good mechanical properties. In other embodiments, the insulating layer 41 can also be made of other materials with good cold conduction and insulation properties, and is not limited to the above-mentioned aluminum nitride ceramic sheet.

[0044] The metal layer 42 is made of indium sheet, which also has excellent thermal conductivity, low hardness, and soft material, making it easier to connect to the first cooling column 20 and the second cooling column 30. After connection, the contact with the two will be closer, and it can also play the role of soft connection to prevent the insulating cooling part 40 from being crushed. In one embodiment, the first cooling column 20 and the second cooling column 30 are respectively connected to the corresponding metal layer 42 by welding, thereby simplifying the connection structure without the need for additional connectors. The welding method is preferably configured as vacuum brazing to improve the corrosion resistance of the product and avoid environmental pollution. In other embodiments, the first cooling column 20 and the second cooling column 30 can also be connected to the corresponding metal layer 42 by welding methods such as arc welding or laser welding.

[0045] Exemplarily, the first cooling column 20 and the second cooling column 30 are both configured as oxygen-free copper columns, which reduce impurities, improve heat transfer efficiency, and have low hardness and are easy to process. In other embodiments, the first cooling column 20 and the second cooling column 30 can also be made of a material with high thermal conductivity such as an aluminum column.

[0046] In another embodiment, the first cooling column 20 and the second cooling column 30 may be connected by other connection structures in addition to being connected by welding.

[0047] Exemplarily, the superconducting coil joint device 100 further includes a first detachable part 50, which can detachably connect the first cooling column 20, the insulating cooling column 40, and the second cooling column 30, and the first detachable part 50 is insulated from the first cooling column 20 or the second cooling column 30. In this way, the first detachable part 50 can make the connection strength between the first cooling column 20, the insulating cooling column 40, and the second cooling column 30 higher, and the detachable connection makes it easy to repair and replace when one or two of the three are damaged, without replacing all components.

[0048] In one embodiment, the first detachable member 50 includes either a threaded connection or a snap-on connection, and the connection method can be flexibly changed according to work requirements.

[0049] The insulating sleeve 51 is installed in the first cooling column 20, one end of the first threaded member 52 abuts against the first cooling column 20 through the insulating sleeve 51, and the other end extends into the second cooling column 30. The insulating sleeve 51 is threadedly connected to the second cooling column 30. The insulating sleeve 51 is made of a material with good strength at low temperatures, such as polytetrafluoroethylene (PTFE), bakelite, and PEEK.

[0050] Specifically, take the way in which the first detachable part 50 includes a threaded connection as an example: the first cooling column 20 is provided with a first connection hole 21 penetrating along the thickness direction thereof, the second cooling column 30 is provided with a second connection hole 31 at one end away from the component to be cooled 10, the insulating cooling component 40 is provided with a third connection hole 43 penetrating along the thickness direction thereof, the insulating sleeve 51 is installed in the first connection hole 21, one end of the first threaded part 52 abuts against the first cooling column 20 through the insulating sleeve 51, and the other end is successively penetrated through the insulating sleeve 51 and the third connection hole 43 and extends into the second connection hole 31, and is threadedly connected with the second cooling column 30, wherein the first threaded part 52 is insulated between the hole walls of the first connection hole 21 and the hole walls of the third connection hole 43 respectively through the insulating sleeve 51. In this way, the first threaded part 52 is penetrated through the insulating sleeve 51 and the third connection hole 43 and extends into the second connection hole 31, and is connected to the three at the same time, so as to realize the connection and fixation between the three. One end of the first threaded member 52 is in contact with the first cooling column 20 through the insulating sleeve 51 , so the current on the first threaded member 52 will be isolated by the insulating sleeve 51 to prevent the current from being transmitted to the cooling column.

[0051] The first threaded member 52 is a metal screw. Of course, in other embodiments, the first threaded member 52 may also be a ceramic screw. The first detachable member 50 may also be configured to connect the first cooling column 20 and the second cooling column 30 in the form of a snap connection, interference riveting, etc., and is not limited to the above-mentioned threaded connection method.

[0052] Furthermore, a step 211 is provided on the hole wall of the first connection hole 21, and the insulating sleeve 51 is positioned in the first connection hole 21 by the step 211 to ensure the stability of the position of the insulating sleeve 51 and avoid the insulation sleeve 51 loosening to cause leakage and other problems.

[0053] The second cooling column 30 is provided with an annular groove 32 connected with the second connecting hole 31 on one side facing the first cooling column 20, and one end of the insulating sleeve 51 extends into the annular groove 32 through the first connecting hole 21 and the third connecting hole 43, wherein the insulating sleeve 51 extends into one end of the annular groove 32 along the axial direction of the second cooling column 30, and is spaced apart from the bottom surface of the annular groove 32. With such a configuration, the annular groove 32 prevents the second cooling column 30 from directly contacting the insulating sleeve 51, thereby preventing the insulating sleeve 51 from being punctured due to excessive current, and the insulating sleeve 51 is spaced apart from the bottom surface of the annular groove 32 in the axial direction, thereby preventing the insulating sleeve 51 from abutting and interfering with the bottom surface of the groove, thereby preventing the connection between the first cooling column 20 and the second cooling column 30 from being not tight enough.

[0054] Furthermore, along the radial direction of the second connecting hole 31 (that is, the radial direction of the insulating sleeve 51), the insulating sleeve 51 and the side wall of the annular groove 32 are spaced apart. In this way, creepage can be avoided when the second cooling column 30 and the hole wall of the third connecting hole 43 are too close, causing leakage and causing current to be transferred to the first cooling column 20.

[0055] The first detachable member 50 further includes a gasket 53, which is sleeved on the first threaded member 52 and located before the insulating sleeve 51 and the first threaded member 52, and the end of the first threaded member 52 away from the second cooling column 30 is pressed against the insulating sleeve 51 through the gasket 53. In this way, the gasket 53 can prevent the first threaded member 52 from being screwed into the threaded hole excessively to cause damage to the insulating sleeve 51, and avoid the problem of reduced insulation performance after the insulating sleeve 51 is damaged, thereby further preventing leakage.

[0056] The gasket 53 is preferably made of an elastic and insulating material, such as a rubber sheet.

[0057] In one embodiment, the first cooling column 20, the second cooling column 30 and the insulating cooling member 40 can also be connected by welding and then connected by the first detachable member 50. In this way, the stability of the connection between the first cooling column 20, the second cooling column 30 and the insulating cooling member 40 is improved.

[0058] like Figure 1 As shown, the second cooling column 30 and the component to be cooled 10 are connected by a second detachable member 60. This prevents the second cooling column 30 from shaking and tipping over between the components to be cooled 10. Moreover, the second cooling column 30 can be disassembled from the component to be cooled 10, which facilitates later maintenance and replacement.

[0059] Exemplarily, in this embodiment, the second detachable part 60 is a bolt or a screw, and the second detachable part 60 is passed through the cup bottom of the component to be cooled 10 and extends into the second cooling column 30, so that the second cooling column 30 is fixedly connected to the component to be cooled 10.

[0060] It can be understood that in other embodiments, the second cooling column 30 and the cup bottom of the component to be cooled 10 can also be connected by other connection methods such as welding and clamping, and are not limited to the second detachable part 60.

[0061] like Figure 1 As shown, the superconducting coil joint device 100 further includes a cooling belt 71, one end of which is connected to the first cooling column 20, and the other end is used to connect the cold source 70, so that the cold energy of the cold source 70 is transferred to the first cooling column 20 through the cooling belt 71. In this way, the cold energy of the cold source 70 can be transferred through the cooling belt 71, and the cold source 70 does not need to be directly connected to the first cooling column 20, and the position setting of the cold source 70 and the component 10 to be cooled is more free.

[0062] In this embodiment, the cooling belt 71 is made of copper belt, which has good heat transfer effect and low cost. In other embodiments, a thermal siphon can be used to transfer the cold from the cold source 70 to the first cooling column 20, without being limited to the above-mentioned copper belt implementation method.

[0063] Furthermore, a cooling member 72 is connected to the first cooling column 20, and a portion of the cooling member 72 extends into the first cooling column 20. The cooling belt 71 is wound around the outer periphery of the cooling member 72 and connected to the cooling member 72. In this way, since the cooling member 72 extends into the first cooling column 20, it forms a circumferential abutment with the first cooling column 20, with a larger contact area and a higher cooling efficiency, and is fixedly connected to the first cooling column 20. The cooling belt 71 is wound around the outer periphery of the cooling member 72, which expands the connection area between the cooling belt 71 and the cooling member 72, thereby improving the cooling efficiency.

[0064] In other embodiments, the cooling belt 71 may also be directly wound around the outer circumference of the first cooling column 20 and connected by welding or other methods, rather than being limited to the cooling member 72 for cooling and limiting.

[0065] like Figure 5 As shown, the present invention also provides a superconducting coil unit 200, the superconducting coil unit 200 further includes a superconducting switch 90, the superconducting coil joint device 100 is provided in at least two groups, and a plurality of superconducting coils 80 and a superconducting switch 90 are provided between the two groups of superconducting coil joint devices 100, and the plurality of superconducting coils 80 and the superconducting switch 90 are provided in parallel. In this way, the superconducting coil joint device 100 can cool down the plurality of superconducting coils 80 and the superconducting switch 90 at the same time.

[0066] The utility model also provides a medical device, comprising the superconducting coil unit 200 as described above.

[0067] Compared with the prior art, the utility model ensures the connectivity of the superconducting coil 80 in a low-temperature environment through the low-temperature superconducting material in the component to be cooled 10, and the end of the superconducting coil 80 extending into the component to be cooled 10 is equivalent to being completely wrapped by the low-temperature superconducting material, so the contact between the two is stable and reliable, and the first cooling column 20 and the second cooling column 30 are connected by the insulating cooling component 40, so the cold on the cold source 70 can be transferred to the second cooling column 30 through the first cooling column 20, and then the low-temperature superconducting material in the component to be cooled 10 is cooled by the second cooling column 30, thereby providing a low-temperature environment for the superconducting coil 80, and the insulating thermal conductive component has insulating properties, which can prevent the current between the superconducting coils 80 from being transferred to the cold source 70 through the superconducting low-temperature medium, the second cooling column 30 and the first cooling column 20, causing damage to the cold source 70.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A superconducting coil joint device for connecting at least two superconducting coils (80), characterized in that: The superconducting coil joint device comprises: A component to be cooled (10), used for containing a low-temperature superconducting material; A first cooling column (20) is used to connect to a cooling source (70); A second cooling column (30), one end of the second cooling column (30) being installed in the component to be cooled (10) and in contact with the low-temperature superconducting material, and the other end of the second cooling column (30) being connected to the first cooling column; The insulating cooling member (40) is located between the first cooling column (20) and the second cooling column (30), and connects the first cooling column (20) and the second cooling column (30).

2. The superconducting coil joint device according to claim 1, characterized in that: The insulating cooling component (40) comprises an insulating layer (41) and a metal layer (42) provided on two opposite sides of the insulating layer (41); the first cooling column (20) and the second cooling column (30) are respectively connected to the metal layer (42).

3. The superconducting coil joint device according to claim 2, characterized in that: The superconducting coil joint device further comprises a first detachable part (50), wherein the first detachable part (50) is capable of detachably connecting the first cooling column (20), the insulating cooling column (40), and the second cooling column (30), and the first detachable part (50) is insulated from the first cooling column (20) and / or the second cooling column (30).

4. The superconducting coil joint device according to claim 3, characterized in that: The first detachable member (50) comprises: An insulating sleeve (51) is installed in the first cooling column (20); A first threaded member (52), one end of which abuts against the first cooling column (20) through the insulating sleeve (51), and the other end of which extends into the second cooling column (30) and is threadedly connected to the second cooling column (30).

5. The superconducting coil joint device according to claim 4, characterized in that: A first connecting hole (21) is provided in the first cooling column (20), a step (211) is provided on the hole wall of the first connecting hole (21), and the insulating sleeve (51) is positioned in the first connecting hole (21) via the step (211).

6. The superconducting coil joint device according to claim 5, characterized in that: A ring groove (32) is formed on a side of the second cooling conduction column (30) facing the first cooling conduction column (20), and one end of the insulating sleeve (51) extends into the ring groove (32) through the first connecting hole (21); The insulating sleeve (51) extends into one end of the annular groove (32) along the axial direction of the second cooling column (30), and is spaced apart from the bottom surface of the annular groove (32).

7. The superconducting coil joint device according to claim 1, characterized in that: The superconducting coil joint device also includes: A cooling belt (71), one end of which is connected to the first cooling column (20), and the other end of which is used to connect to a cold source (70), so that the cold energy of the cold source (70) is transferred to the first cooling column (20) through the cooling belt (71); a cooling member (72) is connected to the first cooling column (20), a portion of which extends into the first cooling column (20), and the cooling belt (71) is wound around the outer peripheral side of the cooling member (72) and connected to the cooling member (72).

8. The superconducting coil joint device according to claim 1, characterized in that: The component to be cooled (10) comprises a superconducting cup (11), wherein a low-temperature superconducting material is contained in the superconducting cup (11); or, The component to be cooled (10) comprises a superconducting cup body (11) and a cooling conduction adapter block (12), wherein a low-temperature superconducting material is accommodated in the superconducting cup body (11), the cooling conduction adapter block (12) is connected to the low-temperature superconducting material, and the cooling conduction adapter block (12) is connected to the second cooling conduction column (30).

9. A superconducting coil unit, characterized in that: The invention comprises a superconducting coil joint device according to any one of claims 1 to 8, wherein the superconducting coil unit further comprises a superconducting switch, the superconducting coil joint device is arranged into at least two groups, and a plurality of the superconducting coils (80) and a superconducting switch (90) are arranged between the two groups of the superconducting coil joint devices, and the plurality of the superconducting coils (80) and the superconducting switch (90) are arranged in parallel.

10. A medical device, characterized in that: Comprising the superconducting coil unit as claimed in claim 9.

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