Large current corc superconducting cable joint welding heating device

Abstract

The application relates to the field of superconducting electrical engineering, and particularly provides a large-current CORC superconducting cable joint welding heating device. The device comprises a first sub-module, a second sub-module capable of being fixedly connected with the first sub-module, and in an assembled state, the first sub-module and the second sub-module can form a first containing space containing a cable joint, and a base module formed with a second containing space, and in the assembled state, part of the first sub-module and the second sub-module is contained in the second containing space. Through the structure, the reliability of the heating device in the working state can be ensured. The heating device can provide accurate and reliable welding effect, and the welded cable joint is particularly suitable for complex environments such as large current and strong magnetic field.

Description

Technical Field

[0001] This application belongs to the field of superconducting electric technology, and specifically relates to a high current-carrying CORC superconducting cable joint welding heating device. Background Technology

[0002] CORC (Superconducting Conductor On Round Core) superconducting cables possess advantages such as high mechanical strength and low AC loss, making them widely used for high-current transmission. The structure of a CORC superconducting cable typically consists of a circular or toroidal base and a superconducting tape wrapped around it. To achieve superconductivity, the superconducting tape needs to be maintained below liquid nitrogen temperature. In cable systems containing CORC superconducting cables, the superconducting cable is connected to other conductors in the system, as well as to different sections of the superconducting cable, through joints. Therefore, joints, as connecting components between elements, play a crucial role in the power transmission and application of cable systems and are also one of the challenges in cable research.

[0003] Taking high-current-carrying CORC superconducting cables as an example, they are highly sensitive to factors such as temperature, mechanical stress, and environmental conditions. For instance, joints in CORC superconducting cables can be formed through heat welding. The principle of this process is to melt a low-melting-point metal solder and then inject the molten solder into and fill the gap at the joint of adjacent metal components. To ensure that the performance of the CORC superconducting cable is not compromised, the welding technique must ensure that the superconducting properties of the high-current-carrying CORC superconducting cable are not damaged during the connection process. Accordingly, considering the special characteristics of the joint structure and the working environment of high-current-carrying CORC superconducting cables, a suitable heating device needs to be designed to achieve heat welding of the joints.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] This application is made to address at least part of the aforementioned technical problems. Specifically, it proposes a heating device for welding cable joints of high-current-carrying CORC superconducting cables. This device can provide precise and reliable welding results, and the welded cable joints are particularly suitable for complex environments such as high current and strong magnetic fields.

[0006] In view of this, this application provides a high current-carrying CORC superconducting cable joint welding heating device, the device comprising: a first sub-module; a second sub-module which is fixedly connected to the first sub-module, and in the assembled state, the first sub-module and the second sub-module can form a first accommodating space for accommodating the cable joint; and a base module which forms a second accommodating space, and in the assembled state, a portion of the first sub-module and the second sub-module is accommodated in the second accommodating space.

[0007] This configuration ensures the reliability of the heating device during operation.

[0008] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, the first sub-module and the second sub-module have a first groove and a second groove respectively formed on the side close to each other, and the first groove and the second groove form the first accommodating space.

[0009] This configuration provides a possible way to form the first accommodating space.

[0010] It is understood that those skilled in the art can determine the structural form of the first / second sub-module, the first / second groove, and the specific form of the first accommodating space according to actual needs, such as the first sub-module and the second sub-module having the same or different structures.

[0011] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, the first groove and / or the second groove are provided with cooling channels on or near the groove wall.

[0012] This design allows for timely cooling of the cable joints.

[0013] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, a cooling channel is provided on the groove wall of the first groove and / or the second groove in a radially outward recessed manner, and the base module has a communication structure that allows the cooling medium in the cooling channel to flow out.

[0014] This configuration allows for rapid cooling through direct contact between the cooling medium and the cable connector.

[0015] It is understood that those skilled in the art can determine the structural form of the cooling channels and connecting structures, the extension of cooling channels, and their number, etc., according to actual needs. For example, the connecting structure includes multiple connecting holes aligned with the cooling channels.

[0016] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, the base module includes a housing, a second accommodating chamber is formed within the housing, and a support portion is included. The first sub-module and the second sub-module are disposed on the support portion, and the support portion and the housing form the communicating structure.

[0017] In one possible embodiment of the aforementioned high-current CORC superconducting cable joint heating device, the support portion includes a support column and a support frame disposed on the support column.

[0018] The first submodule and the second submodule are at least supported by the support frame.

[0019] This configuration provides a possible structural form for the support component.

[0020] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, at least a portion of the support column is freely accommodated within the first accommodating space when assembled.

[0021] This configuration effectively prevents cable connectors from falling off the device and effectively guides the cooling medium (such as coolant) in the cooling channel to the connecting structure.

[0022] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, the support frame includes a plurality of support members circumferentially arranged around the support column.

[0023] This configuration provides possible structural forms for the support frame, such as support components that can be support bars, support plates, etc., and the number of support components can be three, etc.

[0024] In one possible implementation of the aforementioned high-current CORC superconducting cable joint heating device, the first sub-module and / or the second sub-module are provided with: a connection hole so as to: achieve a fixed connection between the first sub-module and the second sub-module by means of a fastener engaging with the connection hole; and / or an operating end so as to: bring the first sub-module and the second sub-module close to each other by holding the operating end; and / or a first foolproof structure, wherein the base module is provided with a second foolproof structure that engages with the first foolproof structure.

[0025] This configuration ensures the reliability of the installation of the high-current CORC superconducting cable joint heating device.

[0026] In one possible implementation of the above-mentioned high-current CORC superconducting cable joint heating device, the first sub-module and / or the second sub-module are provided with: a heating hole that can accommodate a heating component; and a temperature measuring hole that can accommodate a temperature measuring component.

[0027] This configuration provides a possible structural form for a high-current CORC superconducting cable joint heating device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This invention provides a schematic diagram of the structure of a high-current CORC superconducting cable joint heating device according to an embodiment of this application.

[0030] Figure 2 An exploded schematic diagram of a high-current CORC superconducting cable joint heating device according to an embodiment of this application is shown;

[0031] Figure 3A A schematic diagram of the structure of the first submodule in a high-current CORC superconducting cable joint heating device according to an embodiment of this application is provided. Figure 1 ;

[0032] Figure 3B A schematic diagram of the structure of the first submodule in a high-current CORC superconducting cable joint heating device according to an embodiment of this application is provided. Figure 2 ;

[0033] Figure 4 A schematic diagram of the structure of the second sub-module in a high-current CORC superconducting cable joint heating device according to an embodiment of this application is shown.

[0034] Figure 5 This application presents a schematic diagram of the base module in a high-current CORC superconducting cable joint heating device according to an embodiment; and

[0035] Figure 6 A cross-sectional schematic diagram of the base module in a high-current CORC superconducting cable joint heating device according to an embodiment of this application is shown.

[0036] In the attached image:

[0037] 100. High current-carrying CORC superconducting cable joint heating device;

[0038] 1. First submodule;

[0039] 11. First groove; 12. First cooling channel; 13. First threaded through hole (connection hole); 14. First heating hole; 15. Temperature measuring hole; 16. First recess;

[0040] 2. Second submodule;

[0041] 21. Second groove; 22. Second cooling channel; 23. Second threaded through hole (connection hole); 24. Second heating hole; 25. Handle; 26. Second protrusion;

[0042] 3. Base module;

[0043] 31. Shell; 32. Support column; 33. Support frame; 34. Support leg; 35. First protrusion; 36. Second recess. Detailed Implementation

[0044] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0046] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or couplings. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0048] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, the principles of CORC superconducting cables and their joint welding, which are well-known to those skilled in the art, are not described in detail in order to highlight the main points of this application.

[0049] Reference Figures 1 to 6 In one possible implementation, the high-current-carrying CORC superconducting cable joint welding heating device of this application mainly includes a first submodule 1, a second submodule 2, and a base module 3. The first submodule 1 and the second submodule 2 are arranged facing each other, and the first submodule and the second submodule have a first groove and a second groove respectively on the side closest to each other, thereby forming a first accommodating space capable of accommodating the cable joint in the assembled state. The base module 3 is mainly used to fix the first submodule 1 and the second submodule 2.

[0050] In one possible implementation, the first submodule 1 and the second submodule 2 have roughly the same structure. Taking the first submodule 1 as an example, it mainly includes a first main body, which is roughly a flat block-shaped structure (also called a strip-shaped structure) of a certain length, made of aluminum. The first submodule has a first groove 11 on the side near the second submodule. The groove wall of the first groove 11 has multiple first cooling channels 12 extending along the length direction (i.e., the vertical direction) of the flat block-shaped structure. In this example, the cross-section of the first groove is roughly semi-circular. A first cooling channel 12 is formed at approximately the middle position and near both ends of the semi-circle. The first cooling channel 12 located in the middle independently constitutes a cooling channel, while the first cooling channels at both ends combine with the second cooling channels on the second submodule to form a cooling channel. That is, in this example, in the assembled state, there are four cooling channels. Cooling is achieved by introducing coolant (such as water, alcohol, etc.) into the cooling channels, through direct contact between the coolant and the cable connector.

[0051] In one possible implementation, the first main body portion has first threaded through holes 13 extending along the groove depth at the ends of the two groove walls that roughly correspond to the first groove (the four corners of the main body portion, a total of four) and at the middle of the two groove walls that roughly correspond to the first groove (the middle of the long side of the main body portion, a total of two). That is, in this example, a total of 6 first threaded through holes are provided on the first sub-module 1. The first threaded through holes are mainly used to achieve a fixed connection between the first sub-module and the second sub-module (by means of fasteners such as screws) by cooperating with the second threaded through holes of the second sub-module.

[0052] In one possible implementation, the first main body portion has a first heating hole 14 at one end (e.g., the bottom) along the length of the first groove. The first heating hole is mainly used to insert a heating rod for heating the welding operation. The first heating hole extends approximately along the length of the first groove into the interior of the first main body portion and is located near the groove wall of the first groove 11 to facilitate rapid heat transfer from the heating rod. Correspondingly, the second sub-module mainly includes a second main body portion and a second groove 21, a second cooling channel 22, a second threaded through hole 23, and a second heating hole 24 disposed on the second main body portion, which will not be described further here.

[0053] Considering the functional integrity of the high-current CORC superconducting cable joint welding heating device, in this example, the difference between the first submodule 1 and the second submodule 2 is that the upper part of the first main body has a temperature measuring hole 15, which is mainly used to insert a temperature measuring rod. To ensure the accuracy and sensitivity of temperature measurement, the temperature measuring hole should be located as close as possible to the groove wall while ensuring safety. The outer side of the second main body is provided with an operating end that allows operators to perform operations such as picking up the object; in this example, the operating end is a handle 25.

[0054] In a preferred embodiment of this application, based on the use of aluminum material for the main structure, by setting the first sub-module and the second sub-module and their combination into a flat structure and designing the position of the heating hole and the position of the connector to be relatively close, the high thermal conductivity of the device is improved under the premise of lightweighting through the combination of multiple elements.

[0055] Based on the above structure, in one possible implementation, the method of using the high-current CORC superconducting cable joint welding heating device of this application is as follows:

[0056] S1. The first submodule 1 is fixed by a configured device, such as one with clamping function;

[0057] S2. By manual operation (the operator holds the handle 25 and moves it), the (first and second) grooves are aligned and the cable connector is clamped.

[0058] S3. The first submodule and the second submodule are fixedly connected by means of fasteners such as screws and the corresponding (first and second) threaded through holes (one screw and a pair of threaded through holes).

[0059] In a specific example, the first and second main body parts are roughly the same, such as being made of an aluminum block with a length of 350 mm, a width of 46 mm, and a thickness of 14.5 mm. The first and second heating holes are roughly the same, such as having a diameter of 6 mm and a depth of 250 mm; the first and second grooves are roughly the same, such as having a semi-circular cross-section with a diameter of 20 mm; the first and second threaded through holes are roughly the same, such as having a diameter of 2 mm (penetrating the first and second main body parts along the width direction); the cross-section of the first and second cooling channels is roughly a portion of a circle, such as having a diameter of 4 mm; the temperature measuring hole 15 has a diameter of 4 mm and a depth of 250 mm; the handle of the second submodule is 115 mm long and 50 mm high, and the cross-section of the handle is roughly a circle with a relatively smaller middle section and relatively larger ends, such as having a diameter between 12 and 20 mm, where the middle section is easy to hold, and the ends ensure structural reliability and better absorb heat that is not carried away by the coolant.

[0060] In one possible implementation, the base module 3 mainly includes a base body portion, which includes a housing 31. The housing forms a second accommodating space, and a support portion is disposed within the second accommodating space. The support portion includes a support column 32 and a support frame 33 located in the middle. At least a portion of the support column can be embedded in the first accommodating space formed by the first and second grooves. The support frame mainly provides support for the first and second sub-modules. In the assembled state, the bottoms of the first and second sub-modules abut against the side of the support plate. For example, the radial dimension of the support column is slightly smaller than the first accommodating space formed by the first and second grooves to prevent the cable connector from falling and to guide the coolant in the (first and second) cooling channels. Specifically, because the radial dimension of the support column is slightly smaller, the support column can enter the first accommodating space formed by the first and second grooves. When the cable connector falls, it will first contact the support column and thus stop falling. This prevents the cable connector from falling to the ground and causing safety problems such as metal solder splashing. Meanwhile, since the (first and second) cooling channels are relatively close to the support column, they may even come into contact with each other in actual use. This allows the support column to better guide the coolant flow to the other end (lower end). Based on this, a device capable of absorbing / collecting coolant can be placed at the other end of the support column to ensure the device's impact on the operating environment during use. For example, the support frame may include multiple support members extending radially along the support column and circumferentially around its side. These support members may be support plates of a certain thickness. In this example, the support plates may be aluminum support plates and may consist of four plates, which generally form a cross-shaped structure.

[0061] In order to ensure that the support column 32 has a portion that can extend into the first accommodating space formed by the first groove and the second groove, the axial dimension (height in the assembled state) of the support plate along the support column should be lower than that of the support column 32. Furthermore, in order to ensure that the first sub-module and the second sub-module can extend into the second accommodating space and abut against the side of the support plate 33, the dimensions of the housing (radial profile dimension of the inner wall) should be larger than the combined structure of the first sub-module 1 and the second sub-module 2.

[0062] In one possible implementation, to ensure that the support column can smoothly extend into the first accommodating space formed by the first and second grooves, the diameter of the support column is 2-5 mm (e.g., 3 mm) smaller than the diameter of the first accommodating space formed by the first and second grooves. To ensure that the assembly of the first and second sub-modules can smoothly extend into the first accommodating space of the base module, the length / width of the cross-section of the inner wall of the housing (corresponding to the second accommodating space) is 5-15 mm (e.g., 10 mm) larger than the length / width of the assembly of the first and second sub-modules.

[0063] In a specific example, the support column 32 has a diameter of 17 mm and a height of 50 mm; the support plates of the support frame 33 have roughly the same specifications, such as a thickness of 8 mm and a height of 40 mm; the inner wall of the shell has a length of 56 mm and a width of 40 mm; the outer wall of the bottom of the shell has a length of 160 mm and a width of 160 mm; the outer wall of the top of the shell has a length of 76 mm, a width of 60 mm, and a height of 140 mm; and the four legs at the bottom of the shell have a diameter of 30 mm and a height of 20 mm.

[0064] In one possible implementation, certain mating features can be provided between the lower part of the first / second submodule and the upper part of the corresponding support plate to achieve a foolproof function. For example, in this example, a first recess 16 is provided below the first submodule 1 and a first protrusion 35 is provided on the corresponding support frame. A second protrusion 26 is provided below the second submodule 2 and a second recess 36 is provided on the corresponding support frame grid. Besides the foolproof function, such mating features also ensure the support stability of the device in use to a certain extent.

[0065] Obviously, the combination of the two sets of grooves and protrusions mentioned above is only an exemplary implementation of the mistake-proof function. Those skilled in the art can flexibly choose the specific implementation of the mistake-proof function according to actual needs, such as setting only one protrusion with a rectangular cross-section on one of the sub-modules.

[0066] In a specific example, the width of the first recess on the first submodule is 6mm, and correspondingly, the length, width, and height of the first protrusion on the upper side of the support plate are 8mm, 4mm, and 10mm. The first recess is 1-4mm wider than the first protrusion (e.g., 2mm in the example) to facilitate insertion. The length of the second protrusion on the second submodule is 4mm, the width is 2mm, and the depth is 10mm. Correspondingly, the length of the second recess on the upper side of the support plate is 10mm, the width is 6mm, and the depth is 10mm. Similarly, the length of the second protrusion is 1-4mm smaller than the width of the second recess (e.g., 2mm in the example).

[0067] In this example, the main body of the heating device is a high-purity aluminum block with an overall rectangular outline. Structurally, it is mainly divided into a first sub-module, a second sub-module, and a base module. The first and second sub-modules are fixedly connected by fasteners such as screws and threaded through holes on the first / second sub-modules. A handle on the second sub-module facilitates the alignment of the two sub-modules and subsequent fixing operations. Simultaneously, a semi-circular groove extending along the long side is machined in the middle of the short side of each sub-module. By clamping the two sub-modules, the cable connector can be fixed within the first accommodating space formed by the two grooves. For example, one sub-module can be clamped using a clamping device, and then the other sub-module can be held close and clamped together using the aforementioned engagement. This configuration simplifies the placement and fixing process of the cable connector and provides necessary support and positioning for the welding process.

[0068] Furthermore, in this example, the base module design allows the two sub-modules of the high-current CORC superconducting cable connector heating device to be tightly embedded within it during operation. The base module housing contains a support section, which mainly includes support columns and multiple support frames extending outwards from the columns. For example, in this example, the support frames include four support plates in a roughly cross-shaped structure. The support section serves two main purposes: firstly, it effectively prevents the cable connector from detaching due to discrepancies between the cable connector's dimensions and the dimensions of the first / second grooves; secondly, it facilitates the drainage of coolant after heating. Specifically, the cross-shaped support frames primarily provide support for the first and second sub-modules, effectively preventing the entire device from falling if the clamping device becomes loose. Meanwhile, the gaps between adjacent support plates in the cross-shaped support frame not only facilitate the wiring of the heating rod, but also allow the coolant to flow out of the device along the hollow part of the cross-shaped support frame, thereby quickly releasing heat. Based on this, the cable joint and the entire high-current CORC superconducting cable joint heating device can be cooled quickly.

[0069] Furthermore, in this example, three cooling channels are provided on the inner wall of the semi-circular grooves of the two sub-modules, approximately in the middle and near both ends. The main purpose of the cooling channels is to allow coolant to be poured into them after the welding heating is completed, so that the coolant can directly contact the cable joint, thereby rapidly cooling the heated cable joint and the entire high-current CORC superconducting cable welding heating device.

[0070] The general process for welding cable joints is as follows: First, fill the fixed cable joint with a metal solder such as tin. Then, heat is rapidly and effectively transferred to the cable joint by heating the two sub-modules with a heating rod, melting the metal solder. Next, a high-current CORC superconducting cable is inserted into the cable joint. Once the cable joint is in complete contact with the metal solder, coolant is injected into the first / second cooling channel, causing the liquid metal solder inside the cable joint to cool and solidify rapidly. This effectively prevents the phenomenon of the fixed part of the superconducting tape wrapped on the high-current CORC superconducting cable unraveling due to excessive heating time, as is often the case with high-current CORC superconducting cables. After the metal solder has cooled and solidified, the welding work is completed, and the heating device for the high-current CORC superconducting cable joint of this application can be removed.

[0071] Furthermore, in this example, first and second heating holes are symmetrically arranged inside the main body of the first and second submodules near the first and second recesses to hold the heating rods. Therefore, heat is primarily obtained by placing the heating rods at the bottom of the aluminum block. This configuration effectively prevents molten metal solder from splashing onto the heating rods and causing short circuits, while also ensuring that heat is quickly and efficiently transferred to the metal solder, thus guaranteeing its melting and a good connection with the cable connector. This improves welding quality and reduces the risk of incomplete soldering.

[0072] While ensuring welding quality, overheating is also a crucial concern. Therefore, in this example, a temperature sensing hole is provided at the top of the first submodule. By inserting a temperature sensing rod into this hole, the temperature of the cable joint can be measured in real time during heating. Based on the measured temperature, the operating parameters of the heating rod (such as power) can be adjusted to effectively prevent incomplete melting of the solder due to insufficient temperature reaching or near the melting point, or damage to the superconducting tape due to excessively high temperature. For example, if the current temperature measured by the temperature sensing rod is far from the target temperature, the heating process can be accelerated by increasing the power of the heating rod.

[0073] As can be seen, in the preferred embodiment of this application, the structure of the high-current CORC superconducting cable joint heating device fully considers the needs of engineering practice. The cuboid shape allows the high-current CORC superconducting cable joint heating device to be easily and well integrated with clamping equipment. Furthermore, this application also has the advantages of small size and light weight, meaning it does not occupy excessive initial storage space in a laboratory environment and is easy to store and transport. Thus, the lower manufacturing cost and higher energy efficiency make this device particularly suitable for laboratory environments.

[0074] In addition, other possible implementation methods may exist, such as including but not limited to:

[0075] Understandably, besides directly creating the cooling channel on the inner wall of the aluminum block, it can also be built into the aluminum block, such as by creating the cooling channel near the groove wall. However, during the actual design process, the inventors found that the built-in structure would affect the layout of heating holes, temperature measuring holes, threaded through holes, etc. to some extent. Furthermore, compared with the built-in cooling channel, the solution that allows the coolant to directly contact the cable connector can achieve cooling faster. Therefore, in this example, the method of directly creating the cooling channel on the inner wall of the groove was adopted.

[0076] It is also understood that those skilled in the art can determine the structure, number, and relative positional relationship of the cooling channels according to actual needs, such as the cooling channels having a certain angle with the vertical direction, and the cross-section of the cooling channels at different positions along their flow direction being different.

[0077] It should be specifically noted that the problems mentioned in the other embodiments are only used to explain why this embodiment is described in conjunction with the current structure, and are not intended to suggest that the problems mentioned in other embodiments are therefore excluded from this application. More precisely, it should be understood that this embodiment is described as a specific example that is easier to understand by combining advantages, and related elements can also be changed according to actual needs. For example, under specific needs, a certain degree of increase in layout difficulty can be appropriately accepted.

[0078] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A heating device for a high-current-carrying CORC superconducting cable joint, characterized in that, The device includes: First submodule; The second submodule can be fixedly connected to the first submodule, and In the assembled state, the first submodule and the second submodule can form a first accommodating space to accommodate the cable connector; The base module has a second accommodating space, and in the assembled state, a portion of the first sub-module and the second sub-module are accommodated in the second accommodating space; The first submodule and the second submodule have a first groove and a second groove respectively formed on their sides close to each other. The first groove and the second groove form the first accommodating space. The first groove and / or the second groove have cooling channels on their groove walls or near their groove walls. The first groove and / or the second groove have cooling channels in a radially outward recessed manner on their groove walls. The base module has a communication structure that allows the cooling medium in the cooling channels to flow out. The base module includes a housing, a second accommodating space is formed inside the housing and a support portion is included. The support portion and the housing form the communicating structure. The support portion includes a support column and a support frame disposed on the support column. The first sub-module and the second sub-module are at least supported by the support frame. In the assembled state, at least a portion of the support column is freely accommodated in the first accommodating space. The first submodule and / or the second submodule are provided with a heating hole, which can accommodate a heating component.

2. The high-current CORC superconducting cable joint heating device according to claim 1, characterized in that, The support frame includes a plurality of support members arranged circumferentially around the support column.

3. The high-current CORC superconducting cable joint heating device according to claim 1, characterized in that, The first submodule and / or the second submodule are provided with; Connection holes are provided so that: the first submodule and the second submodule are fixedly connected by means of fasteners engaging with the connection holes; and / or The operating end is configured such that the first submodule and the second submodule are brought close to each other by holding the operating end by hand. And / or The first foolproof structure is provided on the base module, and the second foolproof structure is provided to cooperate with the first foolproof structure.

4. The high-current CORC superconducting cable joint heating device according to claim 1, characterized in that, The first submodule and / or the second submodule are configured with: The temperature measuring hole can accommodate the temperature measuring component.

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