Superconducting joint for star simulator and superconducting cable assembly

Abstract

The invention discloses a superconducting connector for a star simulator and a superconducting cable assembly. The superconducting connector comprises a supporting seat, a connector guide seat and a clamping assembly which are fixedly connected in sequence in the length direction of the superconducting connector. A first boss and a second boss are arranged on the supporting seat in a spaced mode in the extending direction perpendicular to the length direction, a through hole is formed in each boss in the first boss and the second boss, a first guide hole and a second guide hole are formed in the connector guide seat in a spaced mode, and the clamping assembly comprises a first sleeve and a second sleeve which are arranged in the extending direction in a spaced mode. According to the superconducting connector, when the first superconducting cable and the second superconducting cable are electrically connected, the first cable connecting part and the second superconducting cable connecting part are jointly limited by the supporting seat, the guide seat and the clamping assembly, so that the risks of deviation, hinging and disconnection of the connecting position of the first superconducting cable and the second superconducting cable are reduced; therefore, current can be stably conducted between the first superconducting cable and the second superconducting cable.

Description

Technical Field

[0001] This invention relates to the field of superconducting technology, and in particular to a superconducting connector and superconducting cable assembly for stellarators. Background Technology

[0002] A stellarator is a toroidal magnetic confinement device designed to achieve controlled nuclear fusion, and it stands alongside the tokamak as one of the two core directions in magnetic confinement fusion research. Its core design concept is to confine high-temperature plasma using a helical magnetic field. This magnetic field is generated by a carefully arranged set of external coils, the twisted shape of which simulates the trajectory of plasma within a toroidal vacuum chamber. Unlike a tokamak, it does not rely on a magnetic field generated by the plasma's own electric current, thus possessing greater stability in principle and being more suitable for the continuous power generation requirements of future fusion power plants. Despite its higher structural complexity and construction cost, the stellarator is considered one of the most promising technological pathways in the long-term exploration of controlled nuclear fusion, providing crucial support for humanity's ultimate realization of clean, unlimited fusion energy.

[0003] Stellarators typically employ twisted superconducting magnets to create the complex magnetic cage required. These superconducting magnets generate large currents and high magnetic fields, and are usually armored to enhance their structural strength. Due to limitations in the length of a single conductor winding or the complexity of the winding process, a single superconducting magnet is generally composed of multiple multi-coil coils connected by a superconducting joint. The superconducting joint requires extremely low resistance to minimize Joule heating, and a well-designed cryogenic environment to rapidly dissipate heat from the joint is crucial to its design.

[0004] Generally, a superconducting conductor connector can electrically connect two multi-coil coils. However, in the existing superconducting conductor connector, after electrically connecting the superconducting cable connectors of the two multi-coil coils, the input ends of the superconducting cable connectors of the two multi-coil coils are in a free position. When subjected to an external magnetic field during use, the electromagnetic force will cause the two multi-coil coils to sway. Over a long period of use, there is a risk that the connection position of the two multi-coil coils may shift, hinge, or break, which may lead to electrical leakage or the stellarator malfunctioning. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in the existing stellarator, during long-term use, the electromagnetic force of the external magnetic field causes the two multi-coil coils to sway for a long time. This can lead to the risk of the connection position of the two multi-coil coils shifting, hinged, or broken during long-term use, resulting in electrical leakage or the stellarator failing to work.

[0006] To address the aforementioned problems, the present invention provides a superconducting connector for a stellarator, the superconducting connector comprising a support base, a connector guide base, and a clamping assembly that are sequentially fixedly connected along the length of the superconducting connector.

[0007] Along the extension direction perpendicular to the length direction, the support base is provided with a first boss and a second boss at intervals, and each of the first boss and the second boss is provided with a through hole, which penetrates the boss along the length direction of the superconducting connector; the connector guide seat is provided with a first guide hole and a second guide hole at intervals, and both the first guide hole and the second guide hole penetrate the connector guide seat along the length direction of the superconducting connector; the clamping assembly includes a first sleeve and a second sleeve at intervals along the extension direction, and one end of the first sleeve and the second sleeve are fixedly connected to the end of the connector guide seat away from the support base along the length direction of the superconducting connector, and the first sleeve and the second sleeve are electrically connected.

[0008] In the stellarator, when the first superconducting cable and the second superconducting cable are electrically connected through a superconducting connector, the first cable connection portion of the first superconducting cable extends out of the first armor and passes through the through hole and the first guide hole of the first boss in sequence, extending into the inner cavity of the first sleeve and electrically connecting with the first sleeve. The second cable connection portion of the second superconducting cable extends out of the second armor and passes through the through hole and the second guide hole of the second boss in sequence, extending into the inner cavity of the second sleeve and electrically connecting with the second sleeve. This allows the first cable connection portion to be electrically connected to the second cable connection portion in sequence through the first sleeve and the second sleeve. Furthermore, the end face of the first boss away from the connector guide seat abuts against the end face of the first armor, and the end face of the second boss away from the connector guide seat abuts against the end face of the second armor.

[0009] Using the above technical solution, when this superconducting connector electrically connects the first superconducting cable and the second superconducting cable, the first and second protrusions on the support base can first fix the first cable connection part and the second cable connection part, thereby constraining the first cable connection part and the second cable connection part in the length direction and the extension direction. Then, the first guide hole limits and guides the first cable connection part, and the second guide hole limits and guides the second cable connection part, thereby achieving secondary constraint on the first cable connection part and the second cable connection part. Finally, the first cable connection part and the second cable connection part are further constrained by the nested electrical connection between the inner cavity of the first sleeve and the second sleeve and the cable connection part. Therefore, when this superconducting connector electrically connects the first superconducting cable and the second superconducting cable, the first cable connection part and the second superconducting cable connection part are jointly limited by the support base, the guide base and the clamping assembly, so that the first cable connection part and the second cable connection part are reliably fixed. Even when the first superconducting cable and the second superconducting cable frequently shake, the connection position between the first cable connection part and the second cable connection part can be kept stable, reducing the risk of the connection position of the first superconducting cable and the second superconducting cable being offset, hinged and disconnected. This allows the first superconducting cable and the second superconducting cable to conduct current stably, ensuring the safe and reliable operation of the stellarator.

[0010] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator, wherein, in the length direction, the through hole of the first boss is directly opposite one end of the first guide hole, one end of the first sleeve is directly opposite the other end of the first guide hole, the through hole of the second boss is directly opposite one end of the second guide hole, and one end of the second sleeve is directly opposite the other end of the second guide hole.

[0011] By adopting the above technical solution, the through hole of the first boss is aligned with one end of the first guide hole, and the through hole of the second boss is aligned with one end of the second guide hole. This allows the first cable connector to pass through the through hole and the first guide hole on the first boss in sequence, and the second cable connector to pass through the through hole and the second guide hole on the second boss in sequence. This avoids friction or jamming caused by path deviation, and makes it easier to install the first cable connector and the second cable connector.

[0012] Furthermore, by setting one end of the first sleeve to face the other end of the first guide hole, and one end of the second sleeve to face the other end of the second guide hole, it can be ensured that the first cable connector directly enters the inner cavity of the first sleeve after passing through the first guide hole, and the second cable connector directly enters the inner cavity of the second sleeve after passing through the second guide hole, forming a continuous conductive path without bending.

[0013] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator. The superconducting connector further includes a protective cover disposed along the length direction. In the length direction, one end of the protective cover is fixedly installed on the side of the support base near the clamping assembly, and the clamping assembly is located inside the protective cover.

[0014] By adopting the above technical solution, a protective cover extending along the length direction is set between the support base and the clamping component, and the clamping component is completely wrapped inside the protective cover, forming a spatial isolation of the clamping component. Its direct contact with the external environment is blocked, thereby reducing the direct effect of electromagnetic force on the clamping component, improving the structural stability of the superconducting connector in a complex electromagnetic environment, and making the electrical conduction efficiency between the first cable connection part and the second cable connection part higher.

[0015] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator. The superconducting connector further includes a cooling connection pipe extending along the length direction. In the length direction, the support base, the protective cover, and the cooling connection pipe are fixedly connected in sequence. The center of the first cable connection portion is provided with a first inner cooling channel extending in a spiral shape along the length direction of the first cable connection portion. The center of the second cable connection portion is provided with a second inner cooling channel extending in a spiral shape along the length direction of the second cable connection portion.

[0016] Furthermore, the cooling connection pipes are connected to the input ends of the first internal cooling channel and the second internal cooling channel respectively, so as to input the cooling medium into the first internal cooling channel and the second internal cooling channel through the cooling connection pipes.

[0017] Using the above technical solution, when the first superconducting cable and the second superconducting cable are electrically connected through this superconducting connector, the stellarator, during operation, inputs the cooling medium into the first and second internal cooling channels through the cooling connection pipe, thereby achieving rapid cooling of the first cable connection and the second superconducting connection. This enhances the mechanical properties of the superconducting materials in the first cable connection and the second superconducting connection, reduces stress damage caused by thermal expansion and contraction or current surges, and keeps the superconducting materials in the first cable connection and the second cable connection below their critical temperature, maintaining the superconducting state and ensuring the stability and efficiency of current transmission.

[0018] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator, wherein the cooling connection pipe includes a cover plate, an insulating connector, and a helium tube; wherein, an installation port is provided on the other end wall of the protective cover, the cover plate is provided on the installation port, and a connecting boss is formed in the center of the cover plate, the connecting boss extends along the length direction toward the direction away from the protective cover, and the connecting boss has a liquid flow channel extending along its length direction, the liquid flow channel being connected to the first inner cooling channel and the second inner cooling channel respectively.

[0019] Furthermore, along the length direction, the connecting boss, the insulating connector, and the helium tube are fixedly connected in sequence, with the helium tube located on the side of the connecting boss away from the protective cover; wherein, the liquid flow channel is connected to the insulating connector, and the insulating connector is connected to the helium tube.

[0020] Using the above technical solution, when cooling this superconducting connector, liquid helium flows from the helium tube to the insulating connector, then flows through the insulating connector to the liquid flow channel, and then flows through the liquid flow channel to the first inner cooling channel and the second inner cooling channel. As a non-conductive component, the insulating connector forms electrical isolation between the helium tube and the connecting boss, avoiding the risk of the cooling connecting tube becoming electrified.

[0021] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator. The clamping assembly further includes a first pressure plate and a second pressure plate. The first pressure plate is sleeved on the side of the first sleeve away from the second sleeve, and the second pressure plate is sleeved on the side of the second sleeve away from the first sleeve. The first pressure plate and the second pressure plate are fixedly connected. An annular boss is also formed on the side of the cover plate near the clamping assembly. The outer wall surface of the annular boss is fixedly fitted with the inner wall surface of the protective cover, and the inner wall surface of the annular boss is fitted with the outer wall surfaces of the first pressure plate and the second pressure plate.

[0022] Furthermore, the end wall of the annular boss, the protective cover, the first pressure plate, the support seat, and the connector guide seat together form a first external cooling channel; the end wall of the annular boss, the protective cover, the second pressure plate, the support seat, and the connector guide seat together form a second external cooling channel; wherein, the output end of the first internal cooling channel is connected to the first external cooling channel, and the output end of the second internal cooling channel is connected to the second external cooling channel.

[0023] Using the above technical solution, when cooling this superconducting connector, helium liquid flows into the first inner cooling channel and the second inner cooling channel through the liquid flow channel to cool the first cable connection part and the second cable connection part. After cooling, the output end of the first inner cooling channel flows the coolant out to the first outer cooling channel, and the output end of the second inner cooling channel flows the coolant out to the second outer cooling channel, forming a cooling circuit that connects the inside and outside. Under the premise of ensuring that the first cable connection part and the second cable connection part can be cooled first, the clamping component can also be cooled a second time, so that the entire superconducting connector is in a low temperature state, thereby making this superconducting connector more reliable in use and ensuring the long-term stable operation of the superconducting connector.

[0024] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator. The clamping assembly further includes a conductive block extending along the length direction. Along the extension direction, the conductive block is pressed between the first sleeve and the second sleeve so that the first sleeve and the second sleeve are electrically connected through the conductive block. The conductive block is also pressed between the first pressure plate and the second pressure plate so that the first pressure plate and the second pressure plate are fixedly connected through the conductive block.

[0025] The first sleeve includes a first conductive sleeve and a first connecting sleeve, with the first connecting sleeve fixedly sleeved on the side of the first conductive sleeve near the first pressure plate; the second sleeve includes a second conductive sleeve and a second connecting sleeve, with the second connecting sleeve fixedly sleeved on the side of the second conductive sleeve near the second pressure plate; grooves corresponding to the first and second conductive sleeves are respectively opened on both sides of the conductive block; at least a portion of the first and second conductive sleeves is embedded into their respective corresponding grooves and is fixedly welded and electrically connected to the conductive block; furthermore, in the length direction of the superconducting connector, the ends of the first and second connecting sleeves near the connector guide seat are both fixedly connected to the connector guide seat; in the extension direction, the outer wall surface of the first connecting sleeve is attached to the first pressure plate, and the outer wall surface of the second connecting sleeve is attached to the second pressure plate.

[0026] When the first superconducting cable and the second superconducting cable are electrically connected through a superconducting connector, the first cable connection part extends into the first conductive sleeve and is welded and fixed to the first conductive sleeve, and the second cable connection part extends into the second conductive sleeve and is welded and fixed to the second conductive sleeve.

[0027] Using the above technical solution, the conductive block is pressed between the first sleeve and the second sleeve, and the first connecting sleeve is fixedly sleeved on the side of the first conductive sleeve near the first pressure plate, and the second connecting sleeve is fixedly sleeved on the side of the second conductive sleeve near the second pressure plate. Grooves corresponding to the first conductive sleeve and the second conductive sleeve are respectively opened on both sides of the conductive block. At least a portion of the first conductive sleeve and the second conductive sleeve are respectively embedded into their respective corresponding grooves and fixedly welded and electrically connected to the conductive block. This allows the first conductive sleeve to be limited by the first connecting sleeve and the groove on the conductive block corresponding to the first conductive sleeve, and the second conductive sleeve to be limited by the groove on the second connecting sleeve and the conductive block corresponding to the second conductive sleeve. This limits the position of the first conductive sleeve and the second conductive sleeve, avoiding the risk of shaking due to electromagnetic force.

[0028] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator, wherein the inner walls of the first conductive sleeve and the second conductive sleeve are both electroplated with a silver layer; both the first conductive sleeve and the second conductive sleeve are copper sleeves, and the conductive block is a copper block.

[0029] The above technical solution involves electroplating a silver layer on the inner walls of the first and second conductive sleeves. Utilizing silver's high conductivity and low contact resistance, energy loss and localized heating during current transmission are reduced, thereby improving the electrical stability of the superconducting joint. Secondly, copper is used as the base material for the first and second conductive sleeves and the conductive block. Copper itself has excellent electrical and thermal conductivity, which synergizes with the silver plating to further reduce overall resistance. Simultaneously, the conductive block and conductive sleeves are made of the same copper material, avoiding interface stress concentration caused by differences in thermal expansion coefficients during dissimilar metal welding, ensuring the mechanical strength and long-term stability of the welded connection. This design, while maintaining the low resistance characteristics of the superconducting joint, enhances its resistance to deformation and durability in strong electromagnetic environments, effectively solving the failure risk of traditional joints caused by material mismatch or poor surface contact.

[0030] Furthermore, embodiments of the present invention also disclose a superconducting connector for a stellarator. The superconducting connector further includes an insulating cover extending along the length direction. In the length direction of the superconducting connector, one end of the insulating cover is fixedly installed on the side of the support base near the clamping assembly. The insulating cover is disposed on the outer periphery of the protective cover, and the cooling connection pipe passes through the end wall of the other end of the insulating cover.

[0031] Using the above technical solution, the insulating cover extends along its length and covers the outside of the protective cover, forming an outer insulating barrier. This effectively isolates the external electromagnetic field from interference with the clamping assembly and the first and second cable connections, reducing the risk of leakage due to electromagnetic induction. Furthermore, the cooling connection pipe passes through the end wall of the other end of the insulating cover, allowing the insulating cover to insulate the inner and outer cooling channels from the external environment during the cooling medium's transport process, thus reducing the impact of the external environment on the heat transfer of the cooling medium.

[0032] Furthermore, the present invention also provides a superconducting cable assembly for a stellarator, including a superconducting connector, a first superconducting cable, and a second superconducting cable; wherein, the first cable connection portion of the first superconducting cable and the second cable connection portion of the second superconducting cable are fixed and electrically connected by the superconducting connector.

[0033] Using the above technical solution, this superconducting cable assembly uses a superconducting connector to fix and electrically connect the first cable connection portion of the first superconducting cable and the second cable connection portion of the second superconducting cable, forming a superconducting cable assembly with a stable overall structure. Specifically, the superconducting connector, as a connection carrier, not only enables electrical conduction between the first and second cable connection portions, but also limits the position of the first and second cable connection portions through the support base, guide base, and clamping assembly. This reduces the risk of misalignment, hinge, or breakage of the connection position of the first and second superconducting cables in this superconducting cable assembly, enabling the superconducting cable assembly to conduct current stably, making it safer and more reliable to use, and also ensuring the reliable operation of the stellarator. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the superconducting connector provided in an embodiment of the present invention;

[0035] Figure 2 This is a partial structural schematic diagram of a superconducting connector provided in an embodiment of the present invention;

[0036] Figure 3 This is a cross-sectional view of a superconducting connector provided in an embodiment of the present invention.

[0037] Figure 4 This is a partial schematic diagram of a cross-sectional view of a superconducting connector provided in an embodiment of the present invention.

[0038] Figure 5 This is a cross-sectional view of the superconducting connector provided in an embodiment of the present invention from another perspective;

[0039] Figure 6 This is a schematic diagram showing the connection between the first cable connection portion and the first internal cooling channel of the superconducting connector provided in an embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Support base;

[0042] 10. First boss; 11. Second boss;

[0043] 2. Connector guide seat;

[0044] 3. Clamping components;

[0045] 30. First sleeve; 31. Second sleeve; 32. First pressure plate; 33. Second pressure plate; 34. Conductive block; 35. First external cooling channel; 36. Second external cooling channel;

[0046] 4. Protective cover;

[0047] 5. Cooling connection pipe;

[0048] 50. Cover plate; 51. Insulating connector; 52. Helium tube; 53. Connecting boss; 54. Annular boss;

[0049] 6. Insulating cover;

[0050] 7. First superconducting cable;

[0051] 70. First cable connector; 71. First armor; 72. First internal cooling channel;

[0052] 8. Second superconducting cable;

[0053] 80. Second cable connector; 81. Second armor; 82. Second internal cooling channel;

[0054] L represents the length direction; W represents the extension direction. Detailed Implementation

[0055] As described in the background section, a superconducting conductor connector can electrically connect two multi-coil coils. However, in the prior art, when connecting two multi-coil coils, after electrically connecting the superconducting cable connectors of the two multi-coil coils to each other, the input ends of the superconducting cable connectors of the two multi-coil coils are free. During use, when subjected to an external magnetic field, the electromagnetic force will cause the two multi-coil coils to sway. Over a long period of use, there is a risk that the connection position of the two multi-coil coils may shift, hinge, or break, which may lead to electrical leakage or the stellarator malfunctioning.

[0056] To address the aforementioned problems, this invention provides a superconducting connector for a stellarator. When electrically connecting a first superconducting cable and a second superconducting cable, this connector achieves primary fixation of the first and second cable connection portions via a first and second protrusion on the support base, thus constraining the first and second cable connection portions in both the length and extension directions. Then, a first guide hole limits and guides the first cable connection portion, and a second guide hole limits and guides the second cable connection portion, thereby achieving secondary constraint on the first and second cable connection portions. Then, through the nested electrical connection between the inner cavity of the first sleeve and the second sleeve and the cable connection part, the position of the first cable connection part and the second cable connection part is constrained, so that the first cable connection part and the second cable connection part are reliably fixed. During the long-term shaking of the first superconducting cable and the second superconducting cable, the connection position between them remains stable, reducing the risk of the connection position of the first superconducting cable and the second superconducting cable shifting, hinged, or broken. This allows the first superconducting cable and the second superconducting cable to conduct current stably, ensuring the safe and reliable operation of the stellarator.

[0057] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0058] like Figure 1-3 As shown, this superconducting connector for stellarators includes a support base 1, a connector guide seat 2, and a clamping assembly 3, which are fixedly connected in sequence along the length direction L of the superconducting connector. Furthermore, the support base 1, the connector guide seat 2, and the clamping assembly 3 are fixedly connected along the length direction L to form an integral support frame, providing stable support for the superconducting cable.

[0059] Specifically, along the extension direction W perpendicular to the length direction L, the support base 1 is provided with a first boss 10 and a second boss 11 at intervals, and each of the first boss 10 and the second boss 11 is provided with a through hole, which penetrates the boss along the length direction L of the superconducting connector; the connector guide seat 2 is provided with a first guide hole and a second guide hole at intervals, and both the first guide hole and the second guide hole penetrate the connector guide seat 2 along the length direction L of the superconducting connector; the clamping assembly 3 includes a first sleeve 30 and a second sleeve 31 at intervals along the extension direction W, and one end of the first sleeve 30 and the second sleeve 31 are fixedly connected to the end of the connector guide seat 2 away from the support base 1 along the length direction L of the superconducting connector, and the first sleeve 30 and the second sleeve 31 are electrically connected.

[0060] More specifically, when the first superconducting cable 7 and the second superconducting cable 8 are electrically connected via a superconducting connector in the stellarator, the first cable connection portion 70 of the first superconducting cable 7 extends out of the first armor 71 and passes through the through hole and the first guide hole of the first boss 10 in sequence, extending into the inner cavity of the first sleeve 30 and electrically connecting with the first sleeve 30, thereby fixing the first cable connection portion 70; the second cable connection portion 80 of the second superconducting cable 8 extends out of the second armor 81 and passes through the through hole and the second guide hole of the second boss 11 in sequence, extending into the inner cavity of the second sleeve 31 and electrically connecting with the second sleeve 31, thereby fixing the second cable connection portion 80; so that the first cable connection portion 70 is electrically connected to the second cable connection portion 80 via the first sleeve 30 and the second sleeve 31 in sequence, ultimately achieving electrical connection between the first cable connection portion 70 and the second cable connection portion 80, thereby making the first superconducting cable 7 and the second superconducting cable 8 electrically conductive; and, the first boss 10 (see Figure 3 The end face away from the connector guide seat 2 abuts against the end face of the first armor 71, and the second boss 11 (see Figure 3 The end face away from the connector guide seat 2 abuts against the end face of the second armor 81. The abutment between the end face and the armor forms a limit in the length direction L, effectively preventing the first cable connection part 70 and the second cable connection part 80 from being displaced along the length direction L under the action of electromagnetic force.

[0061] It should be noted that the first cable connection portion 70 is formed by removing the armor of the connection end of the first superconducting cable 7; the second cable connection portion 80 is formed by removing the armor of the connection end of the second superconducting cable 8, thereby exposing the battery cells at the connection ends of the first cable connection portion 70 and the second cable connection portion 80, thus forming the first cable connection portion 70 and the second cable connection portion 80; that is to say, both the first cable connection portion 70 and the second cable connection portion 80 are made of superconducting materials, such as high-purity oxygen-free copper.

[0062] In summary, when this superconducting connector electrically connects the first superconducting cable 7 and the second superconducting cable 8, the first cable connection part 70 is first passed through the through hole of the first boss 10, and the second cable connection part 80 is passed through the through hole of the second boss 11. The end face of the first boss away from the connector guide seat 2 abuts against the end face of the first armor 71, and the end face of the second boss 11 away from the connector guide seat 2 abuts against the end face of the second armor 81. This achieves primary fixation of the first cable connection part 70 and the second cable connection part 80, effectively preventing the first cable connection part 70 and the second cable connection part 80 from displacing along the length direction L under the action of electromagnetic force. It also prevents the first cable connection part 70 and the second cable connection part 80 from being exposed, reducing the risk of electrical leakage at the connection point between the first cable connection part 70, the second cable connection part 80 and the support seat 1.

[0063] Furthermore, after the first cable connector 70 passes through the through hole of the first boss 10 and the second cable connector 80 passes through the through hole of the second boss 11, the first cable connector 70 extends into and passes through the first guide hole, and the second cable connector 80 extends into and passes through the second guide hole, thereby achieving secondary fixation of the first cable connector 70 and the second cable connector 80. In addition, through the spaced arrangement of the first sleeve 30 and the second sleeve 31, the nested electrical connection between the inner cavity of the sleeve and the cable connector achieves both electrical conduction and constraint in the extension direction W.

[0064] Therefore, it can be seen that when this superconducting connector electrically connects the first superconducting cable 7 and the second superconducting cable 8, the first boss 10 and the second boss 11 on the support base 1 can first achieve primary fixation of the first cable connection part 70 and the second cable connection part 80, thereby constraining the first cable connection part 70 and the second cable connection part 80 in the length direction L and the extension direction W. Then, the first guide hole limits and guides the first cable connection part 70, and the second guide hole limits and guides the second cable connection part 80, thereby achieving secondary constraint of the first cable connection part 70 and the second cable connection part 80. Finally, through the nested electrical connection between the inner cavity of the first sleeve 30 and the second sleeve 31 and the cable connection part, the first cable connection part 70 is further constrained. The cable connection 70 and the second cable connection 80 are further positionally constrained. Therefore, when this superconducting connector electrically connects the first superconducting cable 7 and the second superconducting cable 8, the connection of the first cable connection 70 and the connection of the second superconducting cable 8 are jointly limited by the support seat 1, the guide seat and the clamping assembly 3, so that the first cable connection 70 and the second cable connection 80 are reliably fixed. During the long-term shaking of the first superconducting cable 7 and the second superconducting cable 8, the connection position between them remains stable, reducing the risk of the connection position of the first superconducting cable 7 and the second superconducting cable 8 shifting, hinged and broken. This allows the first superconducting cable 7 and the second superconducting cable 8 to conduct current stably, ensuring the safe and reliable operation of the stellarator.

[0065] Furthermore, the structure and arrangement of the clamping component 3 will be explained below.

[0066] Alternatively, in one feasible implementation, such as Figure 3 and Figure 5 As shown, the clamping assembly 3 also includes a first pressure plate 32 and a second pressure plate 33. The first pressure plate 32 is sleeved on the side of the first sleeve 30 away from the second sleeve 31, and the second pressure plate 33 is sleeved on the side of the second sleeve 31 away from the first sleeve 30. The first pressure plate 32 and the second pressure plate 33 are fixedly connected, thereby enhancing the rigid constraint on the first cable connection 70 and the second cable connection 80. In addition, the first pressure plate 32, the second pressure plate 33, and the connector support 1 are used to resist the electromagnetic force on the superconducting connector during the operation of the stellarator, maintaining structural stability and reducing the risk of quenching failure of the first cable connection 70 and the second cable connection 80, making this superconducting connector safer and more reliable. It should be understood that superconductor quenching failure refers to the phase transition process in which a superconducting material changes from a superconducting state to a normal conducting state when the temperature, magnetic field, or current exceeds a critical value.

[0067] Optionally, in one feasible embodiment, the clamping assembly 3 further includes a conductive block 34 extending along the length direction L. Along the extension direction W, the conductive block 34 is pressed between the first sleeve 30 and the second sleeve 31, so that the first sleeve 30 and the second sleeve 31 are electrically connected through the conductive block 34, thereby forming a stable surface contact electrical connection between the first sleeve 30 and the second sleeve 31, resulting in better conductivity.

[0068] Specifically, the conductive block 34 is also pressed between the first pressure plate 32 and the second pressure plate 33, so that the first pressure plate 32 and the second pressure plate 33 are fixedly connected by the conductive block 34. It should be understood that when the first pressure plate 32 and the second pressure plate 33 are fixedly connected by the conductive block 34, the fixed connection method can be that multiple threaded holes are provided at intervals along the length direction L on the first pressure plate 32 and the second pressure plate 33, and the multiple threaded holes on the first pressure plate 32 correspond one-to-one with the multiple threaded holes on the second pressure plate 33. Connecting holes corresponding one-to-one with the multiple threaded holes are provided on the conductive block 34, and then the first pressure plate 32 and the second pressure plate 33 are fixedly connected by bolts and screws. It should be noted that the number of multiple threaded holes and multiple connecting holes can be 2, 5, 7, etc., and this embodiment does not limit it.

[0069] More specifically, the structure and arrangement of the first sleeve 30 and the second sleeve 31 are not limited.

[0070] In one feasible implementation, the first sleeve 30 includes a first conductive sleeve and a first connecting sleeve, with the first connecting sleeve fixedly sleeved on the side of the first conductive sleeve near the first pressure plate 32; the second sleeve 31 includes a second conductive sleeve and a second connecting sleeve, with the second connecting sleeve fixedly sleeved on the side of the second conductive sleeve near the second pressure plate 33; the conductive block 34 has grooves on both sides corresponding to the first and second conductive sleeves, with at least a portion of the first and second conductive sleeves respectively embedded into their respective corresponding grooves, and fixedly welded and electrically connected to the conductive block 34, thereby achieving surface contact electrical connection and establishing a low-resistance path.

[0071] More specifically, along the length L of the superconducting connector, the ends of both the first and second connecting sleeves near the connector guide seat 2 are fixedly connected to the connector guide seat 2. Along the extension W, the outer wall of the first connecting sleeve is attached to the first pressure plate 32, and the outer wall of the second connecting sleeve is attached to the second pressure plate 33. This allows the first conductive sleeve to be positioned using the grooves on the first connecting sleeve and the conductive block 34 corresponding to the first conductive sleeve, and the second conductive sleeve to be positioned using the grooves on the second connecting sleeve and the conductive block 34 corresponding to the second conductive sleeve. This effectively limits the positions of the first and second conductive sleeves, preventing the risk of wobbling due to electromagnetic force. It should be noted that the connector guide seat 2, the first connecting sleeve, and the second connecting sleeve are all made of stainless steel, thereby improving the structural strength of this superconducting connector.

[0072] More specifically, when the first superconducting cable 7 and the second superconducting cable 8 are electrically connected through a superconducting connector, the first cable connection part 70 extends into the first conductive sleeve and is welded and fixed to the first conductive sleeve, and the second cable connection part 80 extends into the second conductive sleeve and is welded and fixed to the second conductive sleeve.

[0073] In one feasible implementation, to improve the conductivity of this superconducting joint, the inner walls of both the first and second conductive sleeves are electroplated with silver. Utilizing the high conductivity and low contact resistance of silver, energy loss and localized heating during current transmission are reduced, thereby improving the electrical stability of the superconducting joint. Both the first and second conductive sleeves are copper sleeves, and the conductive block 34 is a copper block. Because copper itself has excellent conductivity and thermal conductivity, it can form a synergistic effect with the silver plating, further reducing the overall resistance. Simultaneously, the conductive block 34 and the conductive sleeves are made of the same copper material, which avoids the problem of interface stress concentration caused by differences in thermal expansion coefficients during dissimilar metal welding, ensuring the mechanical strength and long-term stability of the welded connection.

[0074] The aforementioned structure, through the selection of materials, enhances the superconducting connector's resistance to deformation and durability under strong electromagnetic environments while ensuring its low resistance characteristics. This effectively solves the failure risk of traditional connectors caused by material mismatch or poor surface contact, thereby improving the conductivity of this superconducting connector. It is important to understand that the outer peripheral walls of the first cable connection portion 70 and the second cable connection portion 80 can also be electroplated with a silver layer, further enhancing conductivity.

[0075] Furthermore, in one implementation, such as Figure 3As shown, in order to more easily install the first cable connector 70 and the second cable connector 80 to this superconducting connector, in the length direction L, the through hole of the first boss 10 is aligned with one end of the first guide hole, and the through hole of the second boss 11 is aligned with one end of the second guide hole. This avoids friction or jamming caused by path deviation when the first cable connector 70 passes through the through hole and the first guide hole of the first boss 10 in sequence, and the second cable connector 80 passes through the through hole and the second guide hole of the second boss 11 in sequence, making it easier to install the first cable connector 70 and the second cable connector 80.

[0076] Furthermore, one end of the first sleeve 30 is directly opposite the other end of the first guide hole, and one end of the second sleeve 31 is directly opposite the other end of the second guide hole. This ensures that the first cable connector 70 directly enters the inner cavity of the first sleeve 30 after passing through the first guide hole, and the second cable connector 80 directly enters the inner cavity of the second sleeve 31 after passing through the second guide hole, forming a continuous conductive path without bends. This also avoids the problem of friction or jamming caused by path deviation.

[0077] Furthermore, in one implementation, such as Figure 3 As shown, to reduce the influence of external magnetic field forces on the first cable connection portion 70 and the second cable connection portion 80, the superconducting connector also includes a protective cover 4 disposed along the length direction L. One end of the protective cover 4 is fixedly installed on the side of the support base 1 near the clamping assembly 3 along the length direction L, while the other end is disposed away from the support base 1 along the length direction L. The clamping assembly 3 is located inside the protective cover 4, thus blocking direct contact between the clamping assembly 3 and the external environment after it is surrounded by the protective cover 4. This reduces the direct effect of electromagnetic forces on the clamping assembly 3, improves the structural stability of the superconducting connector in complex electromagnetic environments, and increases the electrical conduction efficiency between the first cable connection portion 70 and the second cable connection portion 80. It should be noted that the protective cover 4 is made of stainless steel, further enhancing the structural strength of this superconducting connector.

[0078] Furthermore, in one implementation, such as Figure 3As shown, after the first cable connection portion 70 and the second cable connection portion 80 are electrically connected, if the temperature exceeds a critical value during current conduction, the material recovery resistance of the first cable connection portion 70 and the second cable connection portion 80 will exist, resulting in energy loss and heat generation, thereby causing quench failure and damaging the superconducting performance. Therefore, the superconducting connector also includes a cooling connection pipe 5 extending along the length direction L. Along the length direction L, the support base 1, the protective cover 4, and the cooling connection pipe 5 are fixedly connected in sequence. The center of the first cable connection portion 70 is provided with a first inner cooling channel 72 extending spirally along the length direction L of the first cable connection portion 70; the center of the second cable connection portion 80 is provided with a second inner cooling channel 82 extending spirally along the length direction L of the second cable connection portion 80.

[0079] Specifically, the cooling connection pipe 5 is connected to the input ends of the first internal cooling channel 72 and the second internal cooling channel 82, respectively, so as to input the cooling medium into the first internal cooling channel 72 and the second internal cooling channel 82 through the cooling connection pipe 5. It should be understood that the cooling medium can be helium liquid, liquid nitrogen, etc., and this embodiment is not limited thereto.

[0080] More specifically, when the first superconducting cable 7 and the second superconducting cable 8 are electrically connected through this superconducting connector, the stellarator, during operation, inputs the cooling medium into the first inner cooling channel 72 and the second inner cooling channel 82 through the cooling connection pipe 5, thereby achieving rapid cooling of the first cable connection part 70 and the second cable connection part 80. This enhances the mechanical properties of the superconducting materials of the first cable connection part 70 and the second cable connection part 80, reduces stress damage caused by thermal expansion and contraction or current surges, and keeps the superconducting materials of the first cable connection part 70 and the second cable connection part 80 below their critical temperature, maintaining the superconducting state and ensuring the stability and efficiency of current transmission.

[0081] In addition, the first internal cooling channel 72 and the second internal cooling channel 82 are respectively set in a spiral shape, thereby extending the flow path of the cooling medium in the channel and increasing the heat exchange area with the first cable connection part 70 and the second cable connection part 80, thereby significantly improving the heat dissipation efficiency.

[0082] In one implementation, please refer to Figure 5 The first internal cooling channel 72 may be formed by multiple strands of battery cells of the first cable connection portion 70 surrounding the center of the first cable connection portion 70, and the second internal cooling channel 82 may be formed by multiple strands of battery cells of the second cable connection portion 80 surrounding the center of the second cable connection portion 80.

[0083] In another embodiment, a first cooling pipe may be provided that passes through the center of the first cable connection portion 70, and a second cooling pipe may be provided that passes through the center of the second cable connection portion 80. This embodiment is not limited to this.

[0084] More specifically, the structure and arrangement of the cooling connection pipe 5 are not limited.

[0085] In one implementation, such as Figure 3 As shown, the cooling connection pipe 5 includes a cover plate 50, an insulating connector 51, and a helium pipe 52; wherein, an installation port is provided on the other end wall of the protective cover 4, the cover plate 50 is covered on the installation port, and a connecting boss 53 is formed in the center of the cover plate 50. The connecting boss 53 extends along the length direction L in a direction away from the protective cover 4, and the connecting boss 53 has a liquid flow channel extending along its length direction L. The liquid flow channel is connected to the first inner cooling channel 72 and the second inner cooling channel 82 respectively.

[0086] Specifically, along the length direction L, the connecting boss 53, the insulating connector 51, and the helium tube 52 are sequentially fixedly connected, and the helium tube 52 is located on the side of the connecting boss 53 away from the protective cover 4; wherein, the liquid flow channel is connected to the insulating connector 51, and the insulating connector 51 is connected to the helium tube 52.

[0087] Specifically, when cooling this superconducting connector, liquid helium flows from the helium tube 52 to the insulating connector 51, and then flows through the insulating connector 51 to the liquid flow channel, and then through the liquid flow channel to the first inner cooling channel 72 and the second inner cooling channel 82; the insulating connector 51, as a non-conductive component, forms electrical isolation between the helium tube 52 and the connecting boss 53, avoiding the risk of the cooling connecting tube 5 becoming electrified.

[0088] Furthermore, in one implementation, such as Figure 3 and Figure 5 As shown, in order to further improve the cooling performance of this superconducting connector, an annular boss 54 is formed on the side of the cover plate 50 near the clamping assembly 3. The outer wall surface of the annular boss 54 is fixedly attached to the inner wall surface of the protective cover 4, and the inner wall surface of the annular boss 54 is attached to the outer wall surface of the first pressure plate 32 and the second pressure plate 33, thereby improving the sealing performance of the cover plate 50 for the installation port.

[0089] Specifically, the end wall of the annular boss 54, the protective cover 4, the first pressure plate 32, the support base 1, and the connector guide seat 2 together form a first external cooling channel 35; the end wall of the annular boss 54, the protective cover 4, the second pressure plate 33, the support base 1, and the connector guide seat 2 together form a second external cooling channel 36; wherein, the output end of the first internal cooling channel 72 is connected to the first external cooling channel 35, and the output end of the second internal cooling channel 82 is connected to the second external cooling channel 36. It should be understood that the output ends of the first internal cooling channel 72 and the second internal cooling channel 82 are located at the ends of the first internal cooling channel 72 and the second internal cooling channel 82 closest to the support base 1.

[0090] More specifically, when cooling this superconducting connector, helium liquid flows into the first inner cooling channel 72 and the second inner cooling channel 82 through the liquid flow channel to cool the first cable connection part 70 and the second cable connection part 80. After the output end of the first inner cooling channel 72 flows the coolant out to the first outer cooling channel 35, and the output end of the second inner cooling channel 82 flows the coolant out to the second outer cooling channel 36, forming a cooling circuit that connects the inside and outside. Under the premise of ensuring that the first cable connection part 70 and the second cable connection part 80 can be cooled first, the clamping component 3 can also be cooled a second time, so that the entire superconducting connector is in a low temperature state, thereby making this superconducting connector more reliable in use and ensuring the long-term stable operation of the superconducting connector.

[0091] The following explains how the internal and external cooling channels are connected.

[0092] Please see Figure 4 As shown, the connection between the first inner cooling channel 72 and the first outer cooling channel 35 is used for explanation. There is a gap between the connector guide seat 2 and the support seat 1. There is a gap between the multiple cells at the output end of the first inner cooling channel 72. Liquid helium flows back from the first inner cooling channel 72 to the first outer cooling channel 35 through the gap between the multiple cells.

[0093] Furthermore, in one implementation, such as Figure 1 and Figure 3 As shown, the superconducting connector also includes an insulating cover 6 extending along the length direction L. Along the length direction L of the superconducting connector, one end of the insulating cover 6 is fixedly installed on the side of the support base 1 near the clamping assembly 3, and the insulating cover 6 covers the outer periphery of the protective cover 4. The cooling connection pipe 5 passes through the end wall of the other end of the insulating cover 6.

[0094] Specifically, the insulating cover 6 extends along the length L and covers the outside of the protective cover 4, forming an outer insulating barrier. This effectively isolates the external electromagnetic field from interfering with the clamping assembly 3 and the first cable connection 70 and the second cable connection 80, reducing the risk of leakage due to electromagnetic induction. Furthermore, the cooling connection pipe 5 passes through the end wall of the other end of the insulating cover 6, allowing the insulating cover 6 to insulate the inner and outer cooling channels from the external environment during the cooling medium's transport process, thus reducing the impact of the external environment on the heat transfer of the cooling medium.

[0095] The present invention also provides a superconducting cable assembly for a stellarator, including a superconducting connector, a first superconducting cable 7 and a second superconducting cable 8; wherein the first cable connection portion 70 of the first superconducting cable 7 and the second cable connection portion 80 of the second superconducting cable 8 are fixed and electrically connected by the superconducting connector.

[0096] Specifically, this superconducting cable assembly uses a superconducting connector to fix and electrically connect the first cable connection portion 70 of the first superconducting cable 7 and the second cable connection portion 80 of the second superconducting cable 8, forming a superconducting cable assembly with a stable overall structure. Specifically, the superconducting connector, as a connection carrier, not only enables electrical conduction between the first cable connection portion 70 and the second cable connection portion 80, but also limits the connection between the first cable connection portion 70 and the second superconducting cable 8 through the support base 1, guide base, and clamping assembly 3. This reduces the risk of misalignment, hinge, or breakage of the connection position of the first superconducting cable 7 and the second superconducting cable 8 in this superconducting cable assembly, enabling stable current conduction and making it safer and more reliable to use. It also improves the reliability of the stellarator's operation.

[0097] The specific embodiments described above illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the present invention, many specific details are included in the above description. The present invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the present invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0098] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0099] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0100] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0101] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

Claims

1. A superconducting connector for a stellarator, characterized in that, The superconducting connector includes a support base, a connector guide base, and a clamping assembly that are fixedly connected sequentially along the length of the superconducting connector. Along an extension direction perpendicular to the length direction, the support base is provided with a first boss and a second boss spaced apart, and each of the first boss and the second boss is provided with a through hole, the through hole penetrating the boss along the length direction of the superconducting connector; the connector guide seat is provided with a first guide hole and a second guide hole spaced apart, the first guide hole and the second guide hole both penetrating the connector guide seat along the length direction of the superconducting connector. The clamping assembly includes a first sleeve and a second sleeve spaced apart along the extending direction. Along the length of the superconducting connector, one end of each of the first and second sleeves is fixedly connected to the end of the connector guide seat away from the support seat, and the first sleeve and the second sleeve are electrically connected. In the stellarator, when the first superconducting cable and the second superconducting cable are electrically connected through the superconducting connector, the first cable connection portion of the first superconducting cable extends out of the first armor and passes through the through hole of the first boss and the first guide hole in sequence, extending into the inner cavity of the first sleeve and electrically connecting with the first sleeve. The second cable connection portion of the second superconducting cable extends out of the second armor and passes through the through hole of the second boss and the second guide hole in sequence, extending into the inner cavity of the second sleeve and electrically connecting with the second sleeve. This allows the first cable connection portion to be electrically connected to the second cable connection portion in sequence through the first sleeve and the second sleeve. Furthermore, the end face of the first boss away from the connector guide seat abuts against the end face of the first armor, and the end face of the second boss away from the connector guide seat abuts against the end face of the second armor.

2. The superconducting connector for a stellarator as described in claim 1, characterized in that, In the length direction, the through hole of the first boss is directly opposite one end of the first guide hole, one end of the first sleeve is directly opposite the other end of the first guide hole, the through hole of the second boss is directly opposite one end of the second guide hole, and one end of the second sleeve is directly opposite the other end of the second guide hole.

3. The superconducting connector for a stellarator as described in claim 1, characterized in that, The superconducting connector further includes a protective cover disposed along the length direction, and one end of the protective cover is fixedly installed on the side of the support base near the clamping assembly in the length direction, and the clamping assembly is located inside the protective cover.

4. The superconducting connector for a stellarator as described in claim 3, characterized in that, The superconducting connector further includes a cooling connection pipe extending along the length direction. Along the length direction, the support base, the protective cover, and the cooling connection pipe are sequentially fixedly connected. The center of the first cable connection portion is provided with a first inner cooling channel extending spirally along the length direction of the first cable connection portion, and the center of the second cable connection portion is provided with a second inner cooling channel extending spirally along the length direction of the second cable connection portion. The cooling connection pipe is connected to the input ends of the first internal cooling channel and the second internal cooling channel respectively, so as to input the cooling medium into the first internal cooling channel and the second internal cooling channel through the cooling connection pipe.

5. The superconducting connector for a stellarator as described in claim 4, characterized in that, The cooling connection pipe includes a cover plate, an insulating connector, and a helium tube; wherein, An installation opening is provided on the other end wall of the protective cover. The cover plate is fitted onto the installation opening, and a connecting boss is formed in the center of the cover plate. The connecting boss extends along the length direction away from the protective cover, and a liquid flow channel extending along its length is provided on the connecting boss. The liquid flow channel communicates with the first internal cooling channel and the second internal cooling channel, respectively. Along the length direction, the connecting boss, the insulating connector, and the helium tube are sequentially fixedly connected, with the helium tube located on the side of the connecting boss away from the protective cover; wherein, The liquid flow channel is connected to the insulating connector, and the insulating connector is connected to the helium tube.

6. The superconducting connector for a stellarator as described in claim 5, characterized in that, The clamping assembly further includes a first pressure plate and a second pressure plate. The first pressure plate is sleeved on the side of the first sleeve away from the second sleeve, and the second pressure plate is sleeved on the side of the second sleeve away from the first sleeve. The first pressure plate and the second pressure plate are fixedly connected. The cover plate also has an annular protrusion formed on the side near the clamping assembly. The outer wall surface of the annular protrusion is fixedly fitted to the inner wall surface of the protective cover, and the inner wall surface of the annular protrusion is fitted to the outer wall surfaces of the first pressure plate and the second pressure plate; and... The end wall of the annular boss, the protective cover, the first pressure plate, the support base, and the connector guide seat together form a first external cooling channel; the end wall of the annular boss, the protective cover, the second pressure plate, the support base, and the connector guide seat together form a second external cooling channel; wherein, The output end of the first internal cooling channel is connected to the first external cooling channel, and the output end of the second internal cooling channel is connected to the second external cooling channel.

7. The superconducting connector for a stellarator as described in claim 6, characterized in that, The clamping assembly further includes a conductive block extending along the length direction. Along the extension direction, the conductive block is pressed between the first sleeve and the second sleeve so that the first sleeve and the second sleeve are electrically connected through the conductive block. The conductive block is also pressed between the first pressure plate and the second pressure plate so that the first pressure plate and the second pressure plate are fixedly connected through the conductive block. The first sleeve includes a first conductive sleeve and a first connecting sleeve, with the first connecting sleeve fixedly sleeved on the side of the first conductive sleeve near the first pressure plate; the second sleeve includes a second conductive sleeve and a second connecting sleeve, with the second connecting sleeve fixedly sleeved on the side of the second conductive sleeve near the second pressure plate; the conductive block has grooves on both sides corresponding to the first and second conductive sleeves, and at least portions of the first and second conductive sleeves are respectively embedded into their corresponding grooves, and are fixedly welded and electrically connected to the conductive block; furthermore... Along the length of the superconducting connector, the ends of the first connecting sleeve and the second connecting sleeve near the connector guide seat are both fixedly connected to the connector guide seat. Along the extension direction, the outer wall surface of the first connecting sleeve is attached to the first pressure plate, and the outer wall surface of the second connecting sleeve is attached to the second pressure plate. When the first superconducting cable and the second superconducting cable are electrically connected through the superconducting connector, the first cable connection portion extends into the first conductive sleeve and is welded and fixed to the first conductive sleeve, and the second cable connection portion extends into the second conductive sleeve and is welded and fixed to the second conductive sleeve.

8. The superconducting connector for a stellarator as described in claim 7, characterized in that, Both the first conductive sleeve and the second conductive sleeve have a silver layer electroplated on their inner wall surfaces; both the first conductive sleeve and the second conductive sleeve are copper sleeves, and the conductive block is a copper block.

9. The superconducting connector for a stellarator as described in any one of claims 4-8, characterized in that, The superconducting connector also includes an insulating cover extending along the length direction. In the length direction of the superconducting connector, one end of the insulating cover is fixedly installed on the side of the support near the clamping assembly, and the insulating cover covers the outer periphery of the protective cover. The cooling connection pipe passes through the end wall of the other end of the insulating cover.

10. A superconducting cable assembly for a stellarator, characterized in that, Includes the superconducting connector as described in any one of claims 1-9, and the first superconducting cable and the second superconducting cable; wherein, The first cable connection portion of the first superconducting cable and the second cable connection portion of the second superconducting cable are fixed and electrically connected by the superconducting connector.

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