CN119581130A - High current carrying TSTC high temperature superconducting cable for fusion - Google Patents
High current carrying TSTC high temperature superconducting cable for fusion Download PDFInfo
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- CN119581130A CN119581130A CN202411857137.9A CN202411857137A CN119581130A CN 119581130 A CN119581130 A CN 119581130A CN 202411857137 A CN202411857137 A CN 202411857137A CN 119581130 A CN119581130 A CN 119581130A
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- tstc
- current carrying
- superconducting cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
- H01B12/08—Stranded or braided wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/16—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
本发明涉及超导电缆技术领域，尤其涉及一种聚变用高载流TSTC高温超导电缆，包括：金属导体骨架，周向开设阶梯槽，中部开设冷却介质通道；超导带材，层叠铺设于所述阶梯槽内；隔板，沿所述阶梯槽的深度方向设于所述阶梯槽内，用于将所述阶梯槽分隔成两个结构对称的容纳腔；压板，设置于所述隔板远离所述冷却介质通道的一端，用于固定所述超导带材。本发明提供的聚变用高载流TSTC高温超导电缆，通过在阶梯槽的每层条形槽内层叠不同带宽及类型的超导带材，优化超导带材的种类及带宽，提高超导电缆的载流能力，还能够固定扭转中的超导带材，防止超导带材从阶梯槽内脱落。
The present invention relates to the technical field of superconducting cables, and in particular to a high-current TSTC high-temperature superconducting cable for fusion, comprising: a metal conductor skeleton, with a stepped groove provided in the circumferential direction and a cooling medium channel provided in the middle; a superconducting tape, stacked and laid in the stepped groove; a partition, provided in the stepped groove along the depth direction of the stepped groove, for dividing the stepped groove into two symmetrical accommodating cavities; a pressure plate, provided at one end of the partition away from the cooling medium channel, for fixing the superconducting tape. The high-current TSTC high-temperature superconducting cable for fusion provided by the present invention optimizes the type and bandwidth of the superconducting tape, improves the current-carrying capacity of the superconducting cable, and can also fix the superconducting tape in torsion to prevent the superconducting tape from falling off the stepped groove.
Description
Technical Field
The invention relates to the technical field of superconducting cables, in particular to a high-current-carrying TSTC high-temperature superconducting cable for fusion.
Background
With the development of superconducting materials, a high-current-carrying superconducting conductor based on a second-generation high-temperature superconducting tape gradually becomes a main body in the field of superconducting cables. The TSTC conductor (TWISTED STACKED-targets Cable, hereinafter referred to as "TSTC conductor") based on the superconducting material has good mechanical properties, good current density and bending properties, contact resistance is less than 10nW at liquid nitrogen temperature, critical current reaches 1.5kA, and the critical current reaches 10kA at liquid helium temperature, and is mainly applied to superconducting power equipment and large-scale high-field superconducting magnets. However, TSTC conductors have problems such as limited current carrying capability and easy strip stripping during twisting.
Disclosure of Invention
The invention provides a high-current-carrying TSTC high-temperature superconducting cable for fusion, which is used for solving the problems of improving the current carrying capacity of a TSTC conductor and preventing strip from falling off during torsion.
The invention provides a high-current-carrying TSTC high-temperature superconducting cable for fusion, which comprises:
A metal conductor framework, a stepped groove is formed in the circumferential direction, and a cooling medium channel is formed in the middle of the metal conductor framework;
The superconducting strips are laid in the stepped groove in a stacking manner;
the baffle plate is arranged in the stepped groove along the depth direction of the stepped groove and is used for dividing the stepped groove into two accommodating cavities with symmetrical structures;
And the pressing plate is arranged at one end, far away from the cooling medium channel, of the partition plate and is used for fixing the superconducting tape.
In some embodiments, the metal conductor skeleton is made of copper or aluminum.
In some embodiments, a cooling medium channel penetrates through the axial direction of the metal conductor framework, and cooling liquid is introduced into the cooling medium channel, wherein the cooling liquid is liquid nitrogen or liquid helium.
In some embodiments, the number of the step grooves is a plurality, and the step grooves are uniformly distributed in the circumferential direction of the metal conductor framework.
In some of these embodiments, the stepped groove is disposed spirally along the outer periphery of the metal conductor bobbin, and the stepped groove has an inner diameter that increases in a direction away from the cooling medium passage.
In some of these embodiments, the stepped slot comprises at least two parallel disposed bar slots, the width of which comprises 4mm, 6mm, 8mm, 12mm.
In some embodiments, the superconducting tape comprises yttrium barium copper oxide, bismuth strontium calcium copper oxide, or iron-based superconductor.
In some embodiments, the separator is made of copper or aluminum, and the separator and the metal conductor framework are integrally formed.
In some embodiments, the pressing plate is a spiral plate, a containing groove is formed in the spiral plate, superconducting strips are filled in the containing groove, and the spiral plate is detachably connected with the partition plate.
In some embodiments, the pressing plate is a flat spring, the middle of the spring is filled with a superconducting tape, and two sides of the spring are connected with the metal conductor framework.
The beneficial effects of the invention are as follows:
1. The twisting stepped grooves are formed in the periphery of the metal conductor framework, superconductive tapes with different bandwidths and types are stacked in each layer of strip-shaped grooves of the stepped grooves, and the current carrying capacity of the superconductive cable is improved by optimizing the types and bandwidths of the superconductive tapes, so that the problem of current carrying capacity reduction caused by twisting and bending of the superconductive cable is solved;
2. the stepped groove is divided into two accommodating cavities with symmetrical structures by the partition board, superconducting strips are respectively placed in the two accommodating cavities, and the partition board can effectively split faults;
3. The pressing plate is arranged on one side of the partition plate and one side of the superconducting tape, which is far away from the cooling medium channel, so that on one hand, the pressing plate can protect the partition plate, improve the mechanical strength of the partition plate, prevent the superconducting tapes on two sides of the partition plate from being extruded by the partition plate to deform and bend, and on the other hand, the pressing plate can fix the superconducting tapes in torsion, prevent the superconducting tapes from falling off from the stepped groove, and prevent dislocation movement of the superconducting tapes from influencing the current carrying capacity.
Drawings
FIG. 1 is a cross-sectional view of a fusion high current TSTC high temperature superconducting cable according to the present invention;
FIG. 2 is a schematic structural view of the metal conductor backbone shown in FIG. 1;
FIG. 3 is a schematic view of the structure of one embodiment of the platen shown in FIG. 1;
FIG. 4 is a schematic view of another embodiment of the platen shown in FIG. 1.
In the attached drawings, 1, a metal conductor framework, 2, a stepped groove, 3, a cooling medium channel, 4, a superconducting tape, 5, a partition plate, 6, a pressing plate, 61, a spiral plate, 62, a containing groove, 7, a spring, 8 and a hook.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As described in the background, the conventional TSTC conductors have limited current carrying capacity and the problem of easy shedding of the twisted superconducting tape. Therefore, how to improve the current carrying capability of the TSTC conductor and prevent the superconducting tape from falling off during torsion is a technical problem to be solved by those skilled in the art.
In order to solve the problems, referring to fig. 1, 2, 3 and 4, the invention provides a high current carrying TSTC high temperature superconducting cable for fusion, which comprises a metal conductor framework 1, a superconducting strip 4, a baffle plate 5 and a pressing plate 6, wherein at least one stepped groove 2 is formed in the circumferential direction of the metal conductor framework 1, the stepped groove 2 is spirally wound and twisted along the outer circumference of the metal conductor framework 1, and the superconducting strip 4 is layered and laid in the stepped groove 2. A cooling medium channel 3 is arranged in the middle of the metal conductor framework 1, the cooling medium channel 3 is arranged along the axial direction of the metal conductor framework 1, and cooling medium is introduced into the cooling medium channel 3 to cool the metal conductor framework 1. The partition plate 5 is disposed in the stepped groove 2 along the depth direction of the stepped groove 2, and is used for dividing the stepped groove 2 into two accommodating cavities with symmetrical structures, namely a first accommodating cavity and a second accommodating cavity, and the superconducting tape 4 is respectively placed in the first accommodating cavity and the second accommodating cavity. The pressing plate 6 is disposed at one end of the partition 5 away from the cooling medium channel 3, that is, the pressing plate 6 is disposed at one side of the superconducting tape 4 away from the cooling medium channel 3, and the superconducting tape 4 is pressed and fixed.
According to the high-current-carrying TSTC high-temperature superconducting cable for fusion, the twisted stepped groove 2 is arranged on the periphery of the metal conductor framework 1, the superconducting strips 4 with different bandwidths and types are stacked in each layer of the stepped groove 2, and the current carrying capacity of the superconducting cable is improved by optimizing the types and bandwidths of the superconducting strips 4, so that the problem of current carrying capacity reduction caused by twisting and bending of the superconducting cable is solved. The separator 5 divides the stepped groove 2 into two accommodating cavities with symmetrical structures, the superconducting tapes 4 are respectively placed in the two accommodating cavities, and the separator 5 can effectively split faults. By arranging the pressing plate 6 on one side of the partition plate 5 and one side of the superconducting tape 4 far away from the cooling medium channel, on one hand, the pressing plate 6 can protect the partition plate 5, improve the mechanical strength of the partition plate 5 and prevent the superconducting tapes 4 on two sides of the partition plate 5 from extruding the partition plate 5 to deform and bend, and on the other hand, the pressing plate 6 can fix the superconducting tapes 4 in torsion and prevent the superconducting tapes 4 from falling off from the stepped groove 2 and prevent dislocation movement of the superconducting tapes 4 from influencing the current carrying capacity.
Preferably, the metal conductor framework 1 is made of copper bars or aluminum bars, the periphery of the metal conductor framework is provided with a spiral multi-groove structure, on one hand, copper and aluminum have excellent heat conduction capability, so that low-temperature media in the cooling medium channel 3 can be conveniently transferred to the superconducting strip 4 to cool the superconducting strip 4, and on the other hand, copper and aluminum have excellent strength, and after the periphery of the metal conductor framework is processed into the spiral stepped groove 2, the superconducting strip 4 and the cooling medium channel 3 in the stepped groove 2 can be still kept supported.
Preferably, the cross section of the cooling medium channel 3 is circular, the cooling medium channel 3 penetrates through the axial direction of the metal conductor framework 1, and cooling liquid is introduced into the cooling medium channel 3, and the cooling liquid is liquid nitrogen or liquid helium. The cooling liquid cools the superconducting tape 4, so that the superconducting tape 4 in the spiral stepped groove 2 is always in a superconducting state.
Preferably, the number of the step grooves 2 is 3,4, 5, 6, 8, and they are uniformly distributed in the circumferential direction of the metal conductor skeleton 1.
In some of these embodiments, the stepped groove 2 is spirally formed along the outer circumference of the metal conductor bobbin 1, and the stepped groove 2 is continuously increased in the inner diameter of the bar-shaped groove in a direction away from the cooling medium passage 3. On the one hand, the laying of the superconductive strips 4 is convenient, and the operation is convenient, and on the other hand, the thickness of the metal conductor framework 1 between two adjacent stepped grooves 2 is ensured, so that the integral strength and the supporting function of the metal conductor framework 1 are ensured.
Preferably, the stepped groove 2 comprises at least two parallel arranged strip-shaped grooves, the width of which comprises 4mm, 6mm, 8mm, 12mm, in order to match the thickness specification of the suitable superconducting tape 4.
Preferably, the superconducting tape 4 is made of yttrium barium copper oxide, bismuth strontium calcium copper oxide, and an iron-based superconductor.
Preferably, the material of the separator 5 is a superconducting material with a low resistance value and a high hardness, such as copper or aluminum. This design helps to improve the overall mechanical stability and thermal conduction efficiency of the conductor. The separator 5 and the metal conductor framework 1 are integrally formed.
Preferably, the clamp plate 6 can be detachably connected with the metal conductor skeleton 1, and the clamp plate 6 can be detachably connected with the baffle 5, and the accommodating groove 62 is formed in the clamp plate 6, so that the baffle 5 fixing effect is improved by plugging the superconducting tape 4 in the accommodating groove 62, and the current carrying capacity of the clamp plate 6 is improved on the premise that the superconducting tape 4 is prevented from falling off from the stepped groove 2, and the overall current carrying capacity of the TSTC high-temperature superconducting cable is further improved.
As shown in fig. 3, the pressing plate 6 is an exemplary spiral plate 61, a containing groove 62 is formed in the spiral plate 61, the superconducting tape 4 is filled in the containing groove 62, and then the current carrying capacity of the pressing plate 6 is improved, the spiral plate 61 is detachably connected with the partition plate 5, specifically, an inserting mode can be adopted, protruding portions are arranged at the tail end of the partition plate 5 at intervals, a groove is formed in the middle of the pressing plate 6, the protruding portions are embedded in the groove, and then the detachable connection between the pressing plate 6 and the partition plate 5 is realized. The two sides of the pressing plate 6 are respectively fixedly connected with the metal conductor framework 1, so that the strength between the pressing plate 6 and the metal conductor framework 1 is improved, and the phenomenon that the superconducting tape 4 slides down from the stepped groove 2 to influence the current carrying capacity of the superconducting cable is effectively avoided.
As shown in fig. 4, the pressing plate 6 is an exemplary flat spring 7, the superconducting tape 4 is filled in the spring 7, two sides of the spring 7 can be fixedly connected with the metal conductor framework 1, a hook 8 can also be designed, and a groove matched with the hook 8 is formed in the metal conductor framework 1, so that the pressing plate 6 and the metal conductor framework 1 can be detachably connected. The spring 7 and the partition board 5 are detachably connected, and the connection can be realized by embedding a protruding part and a groove. The pressing plate 6 is designed into a flat spring 7, on one hand, the spring 7 has good self-adaption, self-adaption adjustment can be carried out according to spiral torsion of the stepped groove 2 and the partition plate 5, and the flat inner space formed by coiling of the spring 7 is convenient for filling the superconducting tape 4, so that the current carrying capacity of the pressing plate 6 and the superconducting cable is improved.
Referring to fig. 1, the number of the step grooves 2 is 4, the step grooves 2 are uniformly distributed in the circumferential direction of the metal conductor skeleton 1, the partition plate 5 is positioned in the middle of the step grooves 2, the partition plate 5 divides each step groove 2 into two accommodating cavities with the same structure, each accommodating cavity comprises three twisted strip grooves, and the three twisted strip grooves sequentially comprise a first strip groove, a second strip groove and a third strip groove along the direction far away from the cooling medium channel, wherein the width of the first strip groove is 2mm, the height of the first strip groove is 3.1mm, the width of the second strip groove is 4mm, the height of the second strip groove is 2.6mm, and the width of the third strip groove is 6mm, and the height of the third strip groove is 2.1mm. The first slot can hold 25 superconducting tapes 42 mm wide, the second slot can hold 20 superconducting tapes 4mm wide, and the third slot can hold 25 superconducting tapes 6mm wide. Two superconducting strips 4 can be plugged into the middle part of the pressing plate 6, 142 superconducting strips 4 are placed into each step groove 2, the critical current of each superconducting strip 4 is 120A, the critical current of each step groove 2 is up to 16.8KA, and the critical current of the whole TSTC high-temperature superconducting cable is 67.2KA.
The invention is based on TSTC conductors, the traditional single groove is only rectangular, the quantity of added strips is limited, the invention designs a stepped groove by changing the groove structure, the size of the used strips and the choice of the current carrying capacity become more, the current carrying capacity is improved, and the requirement of large-magnitude current in fusion is met. The twisting may cause strain relief, resulting in increased cable pitch, the addition of spacers in the step grooves, and the design of the platens on the step grooves, which stiffens the superconducting tape in the step grooves and increases its mechanical strength.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present disclosure, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411857137.9A CN119581130A (en) | 2024-12-16 | 2024-12-16 | High current carrying TSTC high temperature superconducting cable for fusion |
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| CN202411857137.9A CN119581130A (en) | 2024-12-16 | 2024-12-16 | High current carrying TSTC high temperature superconducting cable for fusion |
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| CN119581130A true CN119581130A (en) | 2025-03-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192287A (en) * | 1995-06-07 | 1998-09-02 | 比克有限公司 | Electric conductors and cables |
| CN107393652A (en) * | 2017-06-01 | 2017-11-24 | 上海超导科技股份有限公司 | A kind of yttrium system superconducting tape with sealing joint in low-resistance and preparation method thereof |
| CN113363010A (en) * | 2020-10-26 | 2021-09-07 | 核工业西南物理研究院 | Stepped high-temperature superconducting CICC conductor with high current carrying capacity |
| CN117854831A (en) * | 2024-02-21 | 2024-04-09 | 北京交通大学 | TSTC conductor with high current carrying capacity and cable comprising same |
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2024
- 2024-12-16 CN CN202411857137.9A patent/CN119581130A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1192287A (en) * | 1995-06-07 | 1998-09-02 | 比克有限公司 | Electric conductors and cables |
| CN107393652A (en) * | 2017-06-01 | 2017-11-24 | 上海超导科技股份有限公司 | A kind of yttrium system superconducting tape with sealing joint in low-resistance and preparation method thereof |
| CN113363010A (en) * | 2020-10-26 | 2021-09-07 | 核工业西南物理研究院 | Stepped high-temperature superconducting CICC conductor with high current carrying capacity |
| CN117854831A (en) * | 2024-02-21 | 2024-04-09 | 北京交通大学 | TSTC conductor with high current carrying capacity and cable comprising same |
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