Flexible connector for superconducting cable
The superconducting cable flexible connector addresses flexibility and thermal expansion challenges by adjusting bending radius and tension through sliding supports and guide grooves, ensuring reliable operation and adaptability.
Patent Information
- Application Number
- CN202411094831.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-10
- Publication Date
- 2024-12-17
AI Technical Summary
Superconducting cables with poor flexibility and thermal expansion issues due to lack of angle winding, leading to degradation and damage from thermal stress and difficulty in turning during construction.
A superconducting cable flexible connector with a first and second sliding support and a guide groove, allowing for adjustable relative distance and angle between connection ends to change the bending radius and tensile state of superconducting tape groups, using limiting shafts and clamps to manage thermal expansion and bending.
Improves thermal expansion and flexible bending issues, maintaining superconducting performance by allowing adjustable bending radius and tension states, enhancing reliability and adaptability.
Smart Images
Figure CN119153966A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of superconducting electrical engineering, and in particular to a superconducting cable flexible connector. Background Art
[0002] Superconducting power transmission utilizes the zero resistance characteristic of superconductors, which can significantly reduce transmission losses and improve transmission efficiency. It also has the advantages of small corridor footprint, environmental friendliness, reduced carbon emissions, and no fire risk. The use of multiple parallel superconducting tapes to transmit high currents of several thousand amperes or even tens of kiloamperes has obvious application value and development prospects in many fields.
[0003] In the prior art, there are some cable structures that are only stacked and paralleled without angle winding or with small angle winding. Such conductors have the problem of poor flexibility. Since the operating temperature of superconducting cables is generally much lower than room temperature, such superconducting cables without winding angles or with small winding angles will produce obvious thermostrictive effect in the length direction during thermal cycles between room temperature and operating temperature, generally about 0.3%. If flexible processing is not performed, thermal stress will cause superconducting performance to degrade and even damage the superconducting cable. In addition, such cables with poor flexibility are also difficult to turn, and turning is almost inevitable at the construction site. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a superconducting cable flexible connector, which can improve the problems of thermal expansion and flexible bending of the superconducting cable; the structure is simple, and the reliability and adaptability are high.
[0005] In order to solve the above technical problems, the present invention provides a superconducting cable flexible connector, comprising: a first connecting end, a first sliding support is installed on the first connecting end, and a limiting shaft is provided on the first sliding support; a second connecting end, a second sliding support is installed on the second connecting end, and a guide groove is provided on the second sliding support; and a superconducting cable flexible transition section, the superconducting cable flexible transition section includes at least a plurality of superconducting tape groups, one end of any superconducting tape group is fastened by the first connecting end, and the other opposite end is fastened by the second connecting end, wherein: the limiting shaft is installed in the guide groove, the first sliding support moves along the guide groove to change the relative distance with the second sliding support, and the first sliding support rotates a certain angle relative to the guide groove to change the relative angle with the second sliding support; the relative distance and angle between the first connecting end and the second connecting end are changed, so that the superconducting tape group of the linked superconducting cable flexible transition section changes the bending radius and / or the tensile extrusion state.
[0006] The first connection end and the second connection end are respectively in the shape of a hollow cylinder, and one end side of the first connection end and the second connection end are respectively provided with a gap for any superconducting tape group of the flexible transition section of the superconducting cable to pass through.
[0007] The number of gaps on one end of the first connection terminal and the second connection terminal matches the number of superconducting tape groups, and the size of the gaps on one end of the first connection terminal and the second connection terminal matches the cross-sectional dimensions of the plurality of superconducting tape groups in a one-to-one correspondence.
[0008] Among them, the first sliding support member is two parallel plates arranged oppositely, the limiting shaft is two symmetrically arranged raised shafts arranged at the ends of the two parallel plates, the guide grooves are symmetrically arranged on the opposite sides of the second sliding support member, and the two raised shafts are adapted and installed one by one with the two guide grooves.
[0009] Wherein, the first sliding support member and the second sliding support member slide relative to each other to the maximum length of the two support members, and the multiple superconducting tape groups of the flexible transition section of the superconducting cable are still in a state without tension; The first sliding support member and the second sliding support member slide relative to each other to the shortest length of the two support members, and the bending radius size of the multiple superconducting tape groups of the flexible transition section of the superconducting cable is smaller than the maximum bending radius size of the superconducting tape groups.
[0010] The superconducting tape group includes a single component formed by stacking and connecting multiple tapes in parallel, or an overall component formed by arranging multiple single components in a certain pattern.
[0011] The superconducting tape set further includes: a bronze shell covering the outside of the single component or the integral component.
[0012] Wherein, a plurality of monomer components are arranged symmetrically along the circumferential direction.
[0013] Wherein, a clamp for limiting is installed at a certain interval on the monomer component to prevent lateral slippage of multiple strips stacked in parallel during the stretching or extrusion process.
[0014] Wherein, the clamp is made of low-temperature rubber material.
[0015] The implementation of the superconducting cable flexible connector of the present invention has the following beneficial effects: the superconducting cable flexible connector comprises: a first connection end, a first sliding support is mounted on the first connection end, and a limiting shaft is arranged on the first sliding support; a second connection end, a second sliding support is mounted on the second connection end, and a guide groove is arranged on the second sliding support; and a superconducting cable flexible transition section, the superconducting cable flexible transition section comprises at least a plurality of superconducting tape groups, one end of any superconducting tape group is fastened by the first connection end, and the other end opposite is fastened by the second connection end, wherein: the limiting shaft is mounted in the guide groove, the first sliding support moves along the guide groove to change the relative distance with the second sliding support, and the first sliding support rotates a certain angle relative to the guide groove to change the relative angle with the second sliding support; the relative distance and angle between the first connection end and the second connection end are changed, so that the bending radius and / or the tensile extrusion state of the linked superconducting cable flexible transition section are changed, and the problems of thermal expansion and flexible bending of the superconducting cable can be improved; the structure is simple, and the reliability and adaptability are high. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic structural diagram of a superconducting cable flexible connector according to Embodiment 1 of the present invention.
[0018] Figure 2 It is a schematic structural diagram of the assembly of the first sliding support member and the second sliding support member according to the first embodiment of the present invention.
[0019] Figure 3 It is a schematic side structural diagram of the first sliding support member according to the first embodiment of the present invention.
[0020] Figure 4 This is a schematic diagram of the external structure of the flexible transition section of the superconducting cable according to the first embodiment of the present invention.
[0021] Figure 5 Schematic diagram of the cross-sectional structure of a superconducting tape assembly according to Embodiment 1 of the present invention.
[0022] Figure 6 Schematic diagram of the cross-sectional structure of a superconducting tape assembly according to the second embodiment of the present invention.
[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of a superconducting tape assembly according to Embodiment 3 of the present invention. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] like Figure 1-Figure 5 FIG. 1 shows a first embodiment of a superconducting cable flexible connector according to the present invention.
[0026] The superconducting cable flexible connector in this embodiment includes: a first connection end 1, on which a first sliding support 2 is mounted, and a limiting shaft 21 is provided on the first sliding support 2; a second connection end 3, on which a second sliding support 4 is mounted, and a guide groove 41 is provided on the second sliding support 4; and a superconducting cable flexible transition section T, which includes at least a plurality of superconducting tape groups 5, one end of any superconducting tape group 5 is fastened by the first connection end 1, and the other end thereof is fastened by the second connection end 3.
[0027] Wherein: the limit shaft 21 is installed in the guide groove 41, the first sliding support member 2 moves along the guide groove 41 to change the relative distance with the second sliding support member 4, and the first sliding support member 2 rotates a certain angle relative to the guide groove 41 to change the relative angle with the second sliding support member 4; the relative distance and angle between the first connecting terminal 1 and the second connecting terminal 3 are changed, so that the superconducting tape group 5 of the flexible transition section of the linked superconducting cable changes the bending radius and / or the stretching and extrusion state.
[0028] In specific implementation, the first connection terminal 1 and the second connection terminal 3 are respectively in the shape of a hollow cylinder, and the first sliding support 2 is fixedly connected to the first connection terminal 1 by welding, clamping, etc. The second sliding support 4 adopts the same clamping method. One end side of the first connection terminal 1 and the second connection terminal 3 are respectively provided with a gap for any superconducting tape group of the flexible transition section of the superconducting cable to pass through. In implementation, the number of gaps on one end side of the first connection terminal 1 and the second connection terminal 3 is adapted to the number of superconducting tape groups 5, and the size of the gaps on one end side of the first connection terminal 1 and the second connection terminal 3 is adapted to the cross-sectional size of multiple superconducting tape groups 5 in a one-to-one correspondence.
[0029] Furthermore, the first sliding support member 2 is two parallel plates arranged opposite to each other, the limiting shafts 21 are two symmetrically arranged raised shafts provided at the ends of the two parallel plates, the guide grooves 41 are symmetrically arranged on the opposite sides of the second sliding support member 4, and the two raised shafts 21 are fitted and installed one by one with the two guide grooves 41.
[0030] In this embodiment, the width of the guide groove 41 matches the diameter of the limit shaft 21. The length of the guide groove 41 and the length of the second sliding support 4 are determined according to the thermal expansion length of the superconducting tape group 5. The first sliding support 2 and the second sliding support 4 cooperate to realize the parallel sliding of the first sliding support 2 along the two guide grooves 41, the rotation of the first sliding support 2 with the two guide grooves 41 as the center, and the above-mentioned composite motion.
[0031] Furthermore, the relative distance and angle between the first sliding support 2 and the second sliding support 4 can be changed by the relative movement between the first sliding support 2 and the second sliding support 4, thereby improving the length change problem or turning requirement caused by the thermal expansion of the superconducting tape group 5, or solving the above two problems at the same time. When the first sliding support 2 and the second sliding support 4 move relative to each other, the tension or compression state of any superconducting tape group 5 changes by changing its own bending radius.
[0032] During implementation, the first sliding support member 2 and the second sliding support member 4 slide relative to each other to the maximum length of the two supports 2 and 4, the multiple superconducting tape groups 5 are still in a relaxed state, and the multiple superconducting tape groups 5 of the flexible transition section of the superconducting cable are still in a state without tension; the first sliding support member 2 and the second sliding support member 4 slide relative to each other to the shortest length of the two supports 2 and 4, and the bending radius size of the multiple superconducting tape groups 5 of the flexible transition section T of the superconducting cable is smaller than the maximum bending radius size of the superconducting tape groups, thereby ensuring that the superconducting tapes will not be damaged in performance.
[0033] Furthermore, the superconducting tape set 5 in this embodiment includes a single component 51 in which a plurality of tapes are stacked and connected in parallel, and a bronze shell 52 covering the outside of the single component 51 .
[0034] During implementation, a clamp 6 for limiting position is installed at intervals between the superconducting tape group 5 to prevent the stacked and paralleled tapes from sliding sideways during the stretching or extrusion process. The clamp 6 is made of a flexible material (such as low-temperature rubber) that has good mechanical properties at low temperatures. The main function of the clamp 6 is to limit position rather than tighten, so as to prevent the single superconducting tape group 5 from sliding sideways relative to each other during the stretching or extrusion process.
[0035] In other implementations of the superconducting cable flexible connector in this embodiment, the difference from the above-mentioned embodiment 1 lies in the structure of the superconducting tape group 5. Figure 6 , Figure 7 As shown, the superconducting tape group 5 is a multi-unit assembly composed of a plurality of unit assemblies 51 arranged in a certain pattern. The multi-unit assembly is also contained in a bronze shell 52.
[0036] in: Figure 6The superconducting tape group 5 includes four monomer components 51 arranged symmetrically along the circumferential direction; Figure 7 The medium superconducting tape group 5 includes three single components 51 which are centrally symmetrically arranged along the circumferential direction.
[0037] In the specific implementation of the superconducting cable flexible connector in this embodiment, the relative distance and angle between the first sliding support member 2 and the second sliding support member 4 can be changed through the relative movement between the first sliding support member 2 and the second sliding support member 4, thereby improving the length change problem or turning requirement caused by thermal expansion of the superconducting tape group 5.
[0038] A superconducting cable flexible connector according to the present invention has the following beneficial effects: the superconducting cable flexible connector comprises: a first connection end, a first sliding support is mounted on the first connection end, and a limiting shaft is arranged on the first sliding support; a second connection end, a second sliding support is mounted on the second connection end, and a guide groove is arranged on the second sliding support; and a superconducting cable flexible transition section, the superconducting cable flexible transition section comprises at least a plurality of superconducting tape groups, one end of any superconducting tape group is fastened by the first connection end, and the other end opposite to the superconducting tape group is fastened by the second connection end, wherein: the limiting shaft is mounted in the guide groove, the first sliding support moves along the guide groove to change the relative distance with the second sliding support, and the first sliding support rotates a certain angle relative to the guide groove to change the relative angle with the second sliding support; the relative distance and angle between the first connection end and the second connection end are changed, so that the bending radius and / or the tensile extrusion state of the linked superconducting cable flexible transition section are changed, and the problems of thermal expansion and flexible bending of the superconducting cable can be improved; the structure is simple, and the reliability and adaptability are high.
Claims
1. A superconducting cable flexible connector, characterized in that: include: A first connecting end, wherein a first sliding support is mounted on the first connecting end, and a limiting shaft is disposed on the first sliding support; a second connecting end, wherein a second sliding support member is mounted on the second connecting end, and a guide groove is provided on the second sliding support member; and A superconducting cable flexible transition section, the superconducting cable flexible transition section comprises at least a plurality of superconducting tape groups, one end of any superconducting tape group is fastened by the first connecting end head, and the other opposite end is fastened by the second connecting end head, wherein: The limiting shaft is installed in the guide groove, the first sliding support member moves along the guide groove to change the relative distance with the second sliding support member, and the first sliding support member rotates a certain angle relative to the guide groove to change the relative angle with the second sliding support member; The relative distance and angle between the first connection end and the second connection end are changed so that the superconducting tape group of the flexible transition section of the linked superconducting cable changes the bending radius and / or the stretching and extrusion state.
2. The superconducting cable flexible connector according to claim 1, characterized in that: The first connection end and the second connection end are respectively in the shape of a hollow cylinder, and one end side of the first connection end and the second connection end is respectively provided with a gap for any superconducting tape group of the flexible transition section of the superconducting cable to pass through.
3. The superconducting cable flexible connector according to claim 2, characterized in that: The number of gaps on one end of the first connection terminal and the second connection terminal is adapted to the number of superconducting tape groups, and the size of the gaps on one end of the first connection terminal and the second connection terminal is adapted to the cross-sectional dimensions of multiple superconducting tape groups in a one-to-one correspondence.
4. The superconducting cable flexible connector according to claim 1, characterized in that: The first sliding support member is two parallel plates arranged opposite to each other, the limiting shaft is two symmetrically arranged raised shafts arranged at the ends of the two parallel plates, the guide grooves are symmetrically arranged on the opposite sides of the second sliding support member, and the two raised shafts are fitted and installed one by one with the two guide grooves.
5. The superconducting cable flexible connector according to claim 4, characterized in that: The first sliding support member and the second sliding support member slide relative to each other to the maximum length of the two support members, and the plurality of superconducting tape groups of the flexible transition section of the superconducting cable are still in a state of not being subjected to tension; The first sliding support member and the second sliding support member slide relative to each other to the shortest length of the two support members, and the bending radius size of the multiple superconducting tape groups of the superconducting cable flexible transition section is smaller than the maximum bending radius size of the superconducting tape groups.
6. The superconducting cable flexible connector according to claim 1, characterized in that: The superconducting tape group includes a single component formed by stacking and connecting multiple tapes in parallel, or an overall component formed by arranging multiple single components in a certain pattern.
7. The superconducting cable flexible connector according to claim 6, characterized in that: The superconducting tape group further includes: a bronze shell covering the outside of the single component or the integral component.
8. The superconducting cable flexible connector according to claim 6, characterized in that: The plurality of monomer components are symmetrically arranged along a circumferential direction.
9. The superconducting cable flexible connector according to claim 6, characterized in that: A clamp for limiting position is installed at intervals on the monomer assembly to prevent lateral slippage of multiple strips stacked in parallel during the stretching or extrusion process.
10. The superconducting cable flexible connector according to claim 9, characterized in that: The clamp is made of low-temperature rubber material.