High-temperature superconducting cable connector

Abstract

The utility model provides a high-temperature superconducting cable connector, which comprises two sections of high-temperature superconducting cables, a connecting pipe, a connecting material and a filling material, and is characterized in that the end parts of the two sections of high-temperature superconducting cables are connected through the connecting material, and the two sections of high-temperature superconducting cables penetrate through the connecting pipe; and the filling material is filled in the connecting pipe and wraps the connecting position of the end parts of the two sections of high-temperature superconducting cables. The high-temperature superconducting cable joint provided by the utility model is simple in process and can be established and used in a high-intensity magnetic field.

Description

Technical Field

[0001] This application relates to the field of superconducting cable connection technology, and in particular to a high-temperature superconducting cable connector. Background Technology

[0002] High-temperature superconducting cables can exhibit superconducting characteristics at relatively high temperatures and can transmit current without loss in the superconducting state. The connection of ultra-high temperature superconducting cables is one of the key technologies in superconducting power transmission systems. In the process of laying long-distance high-temperature superconducting cables, multiple cable segments are generally used for connection. The connection ends of two superconducting cable segments need to be connected using specific technologies to prevent excessive resistance at the connection point.

[0003] Currently, the connection between two high-temperature superconducting cables is generally achieved by etching to expose the wires at the ends of the superconductor to be connected, and then using superconducting solder as the contact material to connect these wires.

[0004] However, superconducting cables connected by etching technology will lose their superconducting properties under certain magnetic fields, making them unsuitable for establishing strong magnetic field contacts. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a high-temperature superconducting cable connector, which has a simple manufacturing process and can be established and used under a strong magnetic field.

[0006] This application provides a high-temperature superconducting cable connector, including two high-temperature superconducting cables, a connecting tube, a connecting material, and a filling material. The ends of the two high-temperature superconducting cables are configured to be connected by the connecting material, and the two high-temperature superconducting cables are threaded through the connecting tube. The filling material fills the connecting tube and wraps the connection position of the ends of the two high-temperature superconducting cables.

[0007] As an optional implementation, the two high-temperature superconducting cables include a CORC cable and a stacked cable. The CORC cable includes a connecting section, and the stacked cable includes a stacked strip. The ends of the stacked strip and the connecting section are fixed by winding with a connecting material.

[0008] As an alternative implementation, the connecting segment includes a multi-layer strip and a circular core. The multi-layer strip extends spirally around the circular core to form a conductive layer, and a portion of the connecting material is wound around the conductive layer and is in at least partial contact with each layer of the strip.

[0009] As an alternative implementation, stacked strips cover the outer surface of the strip, and some connecting material is wrapped around and fixed to the stacked strips.

[0010] As an optional implementation, the connecting material and the filler material together fill the gap between the connecting section and the stacked strip and the inner wall of the connecting tube.

[0011] As an alternative implementation, the connecting tube includes a straight section and a curved section, a CORC cable is inserted into the connecting tube from the straight section, and a stacked cable is inserted into the connecting tube from the curved section and extends to the straight section; the connecting section is located within the straight section; and a filler material is hot-melted and filled into the curved section.

[0012] As an alternative implementation, the straight segment is filled with rubber clay.

[0013] As an alternative implementation, the connecting material includes solder wire; and / or, the filler material includes at least one of solder wire and solder paste.

[0014] As an optional implementation, the connecting pipe is a copper pipe.

[0015] As an optional implementation, the high-temperature superconducting cable connector also includes an ohmic connector, which is connected to the other end of any segment of the high-temperature superconducting cable relative to the connector end, and the ohmic connector is configured to connect to a power source.

[0016] This application provides a high-temperature superconducting cable connector, comprising two high-temperature superconducting cables, a connecting tube, a connecting material, and a filling material. The ends of the two high-temperature superconducting cables are configured to be connected by the connecting material, and the two high-temperature superconducting cables pass through the connecting tube. The filling material fills the connecting tube and wraps around the connection point of the ends of the two high-temperature superconducting cables. The high-temperature superconducting cable connector provided by this application has a simple manufacturing process and can be established and used under a strong magnetic field. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a high-temperature superconducting cable connector provided in an embodiment of this application;

[0019] Figure 2 A first view of a CORC cable connector provided in an embodiment of this application;

[0020] Figure 3 A second view of a CORC cable connector provided in an embodiment of this application;

[0021] Figure 4 This is a cross-sectional structural diagram of the connection between CORC cable and stacked cable in an embodiment of this application.

[0022] In the picture:

[0023] 10-High-temperature superconducting cable connector;

[0024] 100 - Connecting pipe;

[0025] 101 - Straight line segment;

[0026] 102 - Curved section;

[0027] 110 - Connecting material;

[0028] 120-CORC cable;

[0029] 121-Connecting segment;

[0030] 1211 - Circular core;

[0031] 1212 - Strip;

[0032] 130-Stacked cables;

[0033] 131 - Stacked strips;

[0034] 140-ohm head. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. For example, without departing from the scope of this document, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0037] Depending on the context, the word "if" as used here can be interpreted as "when," "when," or "in response to determination."

[0038] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0039] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0040] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0041] It should be further understood that the terms “comprising” or “including” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups.

[0042] The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0043] High-temperature superconducting cables exhibit superconducting properties at relatively high temperatures (typically above liquid nitrogen temperatures, i.e., 77K or -196°C). In the superconducting state, resistance is zero, enabling lossless current transmission. Connecting ultra-high-temperature superconducting cables is one of the key technologies in superconducting power transmission systems. In the deployment of long-distance high-temperature superconducting cables, multiple cable segments are generally used. Specific techniques are required to connect the two segments to prevent excessive resistance at the connection point.

[0044] Currently, the connection between two high-temperature superconducting cables is generally achieved by etching to expose the wires at the ends of the superconductor to be connected, and then using superconducting solder as the contact material to connect these wires.

[0045] However, superconducting cables connected by etching technology will lose their superconducting properties under certain magnetic fields, making them unsuitable for establishing strong magnetic field contacts.

[0046] To address the aforementioned technical problems, this application provides a high-temperature superconducting cable connector, which has a simple manufacturing process and can be used under a strong magnetic field.

[0047] Figure 1 This is a schematic diagram of a high-temperature superconducting cable connector provided in an embodiment of this application; Figure 2 A first view of a CORC cable connector provided in an embodiment of this application; Figure 3 A second view of a CORC cable connector provided in an embodiment of this application; Figure 4 This is a cross-sectional structural diagram of the connection between CORC cable and stacked cable in an embodiment of this application.

[0048] like Figure 1 This application provides a high-temperature superconducting cable connector 10, including two high-temperature superconducting cables, a connecting tube 100, a connecting material 110, and a filling material. The ends of the two high-temperature superconducting cables are configured to be connected by the connecting material 110, and the two high-temperature superconducting cables are inserted through the connecting tube 100. The filling material is filled in the connecting tube 100 and wraps the connection position of the ends of the two high-temperature superconducting cables.

[0049] It is understandable that in the long-distance deployment of high-temperature superconducting cables, the connection of two high-temperature superconducting cable segments is involved. The connection ends of the two high-temperature superconducting cable segments are connected through a connector, and it is necessary to ensure that the resistance at the connector is zero or very small to meet the transmission efficiency.

[0050] The two high-temperature superconducting cables can be the same type of high-temperature superconducting cable or different high-temperature superconducting cables. The conductive layers at the connecting ends of the two high-temperature superconducting cables are in contact with each other or connected by a low-resistance connecting material 110. The connection method can be winding and binding or welding. The two high-temperature superconducting cables after connection are passed through the connecting tube 100, the connecting part is placed in the connecting tube 100, and the connecting tube 100 is filled with a low-resistance filling material to form a high-temperature superconducting cable joint 10.

[0051] As an optional implementation, the two high-temperature superconducting cables include a CORC cable 120 and a stacked cable 130. The CORC cable 120 includes a connecting section 121, and the stacked cable 130 includes a stacked strip 131. The ends of the stacked strip 131 and the connecting section 121 are wound and fixed by a connecting material 110.

[0052] The CORC cable 120 is a round-core superconducting cable, which is composed of multiple superconducting tapes 1212 spirally wound on a circular core 1211. The stacked cable 130 is composed of multiple superconducting tapes 1212 stacked in parallel and encapsulated in a technical shell. Before connection, the outer protective layer of the connection end of the CORC cable 120 needs to be peeled off to expose a certain length of the internal conductive layer. The exposed part is the connection segment 121 of the CORC cable 120. The stacked tape 131 matching the length of the connection segment 121 is pulled out. The stacked tape 131 is wound and fixed on the connection segment 121 by the connecting material 110, so that the CORC cable 120 and the stacked cable 130 are connected.

[0053] like Figure 2 , Figure 3 As an optional implementation, the connecting segment 121 includes a multilayer strip 1212 and a circular core 1211. The multilayer strip 1212 extends spirally around the circular core 1211 and forms a conductive layer. A portion of the connecting material 110 is wound around the conductive layer and is at least partially in contact with each layer of the strip 1212.

[0054] Understandably, after the outer protective layer of the connecting segment 121 of the CORC cable 120 is peeled off, the inner conductive layer is exposed. The conductive layer is composed of multiple layers of tape 1212, with adjacent layers of tape 1212 spirally extending around the circular core 1211 in opposite directions. To prevent the multiple layers of tape 1212 from becoming tangled, the two ends of the connecting segment 121 can be fixed with insulating tape first, and then the multiple layers of tape 1212 can be cut so that at least part of each layer of tape 1212 is exposed. Finally, the connecting segment 121 is wrapped and fixed with a portion of the connecting material 110. At this time, the connecting material 110 is in contact with at least part of each layer of tape 1212, increasing the contact area and improving conductivity.

[0055] like Figure 4 As an optional implementation, the stacked strip 131 covers the outer surface of the strip 1212, and part of the connecting material 110 is wound around and fixed to the stacked strip 131.

[0056] Understandably, a portion of the connecting material 110 is wrapped around the tape 1212 of the connecting segment 121, and a stacked tape 131 is placed over this portion of the connecting material 110. The stacked tape 131 is connected to the tape 1212 indirectly through this portion of the connecting material 110. Finally, the stacked tape 131 is wrapped around and fixed to the connecting segment 121 through another portion of the connecting material 110. Each tape 1212 of the stacked tape 131 can be connected to each tape 1212 of the CORC cable 120, which can effectively improve conductivity.

[0057] As an optional implementation, the connecting material 110 and the filling material together fill the gap between the connecting section 121 and the stacked strip 131 and the inner wall of the connecting tube 100.

[0058] It is understandable that the connection points of the CORC cable 120 and the stacked cable 130 are inserted into the connecting tube 100, and the connection points are housed in the connecting tube 100. There is a gap between the connecting section 121 and the stacked strip 131 and the inner wall of the connecting tube 100. The gap is filled by the connecting material 110 and the filling material, which can fix the connecting section 121 and the stacked strip 131 in the connecting tube 100. At the same time, it can help the connecting section 121 and the stacked strip 131 to connect better and improve the conductivity.

[0059] As an optional implementation, the connecting tube 100 includes a straight section 101 and a curved section 102. A CORC cable 120 is inserted into the connecting tube 100 from the straight section 101, and a stacked cable 130 is inserted into the curved section 102 of the connecting tube 100 and extends to the straight section 101. The connecting section 121 is located within the straight section 101. A filler material is hot-melted and filled into the curved section 102.

[0060] Understandably, after the connecting section 121 of the CORC cable 120 and the stacked strip 131 of the stacked cable 130 are connected, they are threaded into the connecting tube 100. The connecting part is accommodated in the straight section 101 of the connecting tube 100. The end of the CORC cable 120 away from the connecting part extends from the straight section 101 to the outside of the connecting tube 100, and the end of the stacked cable 130 away from the connecting part extends from the bent section 102 to the outside of the connecting tube 100. The gap between the connecting section 121 and the stacked strip 131 and the inner wall of the connecting tube 100 is filled with filler material, which is added from the bent section 102. At the same time, the connecting tube 100 is heated to 18 degrees Celsius. At 0°C, the filler material is melted and flows from the curved section 102 to the straight section 101. At the same time, part of the connecting material 110 of the winding connecting section 121 and part of the connecting material 110 of the winding stacked strip 131 also melt at high temperature. The molten filler material and connecting material 110 together fill the gap between the connecting section 121 and the inner wall of the connecting tube 100 and the stacked strip 131. The filler material is added until the curved section 102 is filled. After filling, it is cooled. The filler material and connecting material 110 are both low resistance materials, which are used to conduct electricity and fix the part of the CORC cable 120 and the stacked cable 130 connected to the connecting tube 100.

[0061] As an alternative implementation, the straight segment 101 is filled with rubber clay.

[0062] It is understandable that when the connecting pipe 100 is heated, the connecting material 110 and the filler material are in a molten state. The filler material flows from the curved section 102 to the straight section 101. To prevent the molten connecting material 110 and the filler material from flowing out of the straight section 101, rubber putty can be used to fill the straight section 101 to seal the opening of the straight section 101. The amount of rubber putty is determined according to the length of the straight section 101 and the amount of filler material. Under the condition that the filled rubber putty will not be washed away by the molten filler material, the amount of rubber putty should be minimized to ensure good electrical conductivity of the joint.

[0063] As an alternative implementation, the connecting material 110 includes solder wire; and / or, the filler material includes at least one of solder wire and solder paste.

[0064] Understandably, in order to ensure good conductivity of the connector, the connecting material 110 and the filler material need to be low-resistance materials. The connecting material 110 can be solder wire, and the filler material can be solder wire or solder paste, or both solder wire and solder paste can be used for filling.

[0065] As an optional implementation, the connecting pipe 100 is a copper pipe.

[0066] Optionally, the connecting pipe 100 can be a copper pipe. To improve conductivity, an oxygen-free copper pipe can also be used as the connecting pipe 100.

[0067] like Figure 1 As an optional implementation, the high-temperature superconducting cable connector 10 also includes an ohmic connector 140, which is connected to the other end of any segment of the high-temperature superconducting cable relative to the connector end, and is configured to connect to a power source.

[0068] Understandably, after connecting two high-temperature superconducting cables through the high-temperature superconducting cable connector 10, an ohm connector 140 needs to be connected to one of the high-temperature superconducting cables to connect to the power supply.

[0069] This application provides a high-temperature superconducting cable connector 10, comprising two high-temperature superconducting cables, a connecting tube 100, a connecting material 110, and a filling material. The ends of the two high-temperature superconducting cables are configured to be connected via the connecting material 110, and the two high-temperature superconducting cables pass through the connecting tube 100. The filling material fills the connecting tube 100 and wraps around the connection points of the ends of the two high-temperature superconducting cables. The high-temperature superconducting cable connector 10 provided by this application has a simple manufacturing process and can be established and used under a strong magnetic field.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A high-temperature superconducting cable connector (10), characterized in that, It includes two high-temperature superconducting cables, a connecting tube (100), a connecting material (110), and a filling material. The ends of the two high-temperature superconducting cables are configured to be connected through the connecting material (110). The two high-temperature superconducting cables pass through the connecting tube (100). The filling material fills the connecting tube (100) and wraps around the connection position of the ends of the two high-temperature superconducting cables.

2. The high-temperature superconducting cable connector (10) according to claim 1, characterized in that, The two high-temperature superconducting cables include a CORC cable (120) and a stacked cable (130). The CORC cable (120) includes a connecting section (121), and the stacked cable (130) includes a stacked strip (131). The ends of the stacked strip (131) and the connecting section (121) are wound and fixed by the connecting material (110).

3. The high-temperature superconducting cable connector (10) according to claim 2, characterized in that, The connecting segment (121) includes a multilayer strip (1212) and a circular core (1211). The multilayer strip (1212) extends spirally around the circular core (1211) and forms a conductive layer. A portion of the connecting material (110) is wrapped around the conductive layer and is in at least partial contact with each layer of the strip (1212).

4. The high-temperature superconducting cable connector (10) according to claim 2, characterized in that, The stacked strip (131) covers the outer surface of the strip (1212), and part of the connecting material (110) is wrapped around and fixed to the stacked strip (131).

5. The high-temperature superconducting cable connector (10) according to claim 2, characterized in that, The connecting material (110) and the filling material together fill the gap between the connecting segment (121) and the stacked strip (131) and the inner wall of the connecting tube (100).

6. The high-temperature superconducting cable connector (10) according to claim 5, characterized in that, The connecting tube (100) includes a straight section (101) and a curved section (102), the CORC cable (120) is inserted into the connecting tube (100) from the straight section (101), and the stacked cable (130) is inserted into the curved section (102) of the connecting tube (100) and extends to the straight section (101); the connecting section (121) is located within the straight section (101); and the filler material is hot-melt filled within the curved section (102).

7. The high-temperature superconducting cable connector (10) according to claim 6, characterized in that, The straight segment (101) is filled with rubber clay.

8. The high-temperature superconducting cable connector (10) according to claim 1, characterized in that, The connecting material (110) includes solder wire; and / or, the filler material includes at least one of solder wire and solder paste.

9. The high-temperature superconducting cable connector (10) according to claim 1, characterized in that, The connecting pipe (100) is a copper pipe.

10. The high-temperature superconducting cable connector (10) according to any one of claims 1-9, characterized in that, It also includes an ohm connector (140) connected to the other end of any high-temperature superconducting cable relative to the connection end, the ohm connector (140) being configured to connect to a power source.

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