CN114171254B - Integrated joint topology suitable for high-temperature superconducting urban power cable - Google Patents
Integrated joint topology suitable for high-temperature superconducting urban power cable Download PDFInfo
- Publication number
- CN114171254B CN114171254B CN202111508405.2A CN202111508405A CN114171254B CN 114171254 B CN114171254 B CN 114171254B CN 202111508405 A CN202111508405 A CN 202111508405A CN 114171254 B CN114171254 B CN 114171254B
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- Prior art keywords
- temperature superconducting
- joint
- copper
- copper tube
- layer
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- 239000010949 copper Substances 0.000 claims abstract description 56
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 30
- 239000007788 liquid Substances 0.000 description 17
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
-
- 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
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention discloses an integrated joint topology suitable for a high-temperature superconducting urban power cable, which comprises a high-temperature superconducting tape and a copper pipe, wherein the high-temperature superconducting tape is spirally wound in the copper pipe, a bracket for supporting the high-temperature superconducting tape is arranged in the copper pipe, an organic insulating layer and a heat preservation layer are wound on the outer side of the copper pipe, a stainless steel pipe armor layer is arranged on the outer side of the copper pipe, two ends of the copper pipe are respectively provided with an electric joint, and the electric joints are copper joints and are divided into a male joint and a female joint. The invention can meet the working environment of the superconducting cable and realize the large-scale application of the superconducting cable.
Description
Technical Field
The invention relates to an integrated joint topology suitable for a high-temperature superconducting urban power cable, which is used in the field of high-temperature superconducting cables.
Background
In recent years, the superconducting material of the second generation high temperature superconducting material (REBCO coated conductor) has become a research hot spot in the field of power equipment due to the characteristics of no direct current resistance loss and high conduction current density, and has rapid development of related applications, such as superconducting cables, superconducting energy storage, superconducting transformers, superconducting current limiters, superconducting motors and the like, and the superconducting material has great advantages in the aspect of power transmission due to the characteristics of zero resistance, so that a large amount of energy consumption can be saved. The bunched cable is formed by spirally winding superconducting tapes, has the characteristic of high engineering current density, is not insulated from layer to layer, and can flow freely between layers, so that the bunched cable has higher thermal stability and robustness and has wide application prospect in an electric power transmission system. The low temperature environment of the superconductive power cable is needed in the power transmission, and the refrigerant generally used for low temperature refrigeration comprises liquid nitrogen, nitrogen fixation, gas helium, liquid helium, supercritical helium, liquid hydrogen and the like, and has different temperature ranges. The critical temperature of the second-generation high-temperature superconducting tape with the most commercial application prospect at present is about 90K, the factors such as cost economy and the like are comprehensively considered, the liquid nitrogen environment is an economical and applicable low-temperature environment, the liquid nitrogen temperature under normal pressure is generally about 77K, and the refrigeration requirement of the second-generation high-temperature superconducting power cable can be met.
At present, the superconducting tape is prepared in kilometer level, when the superconducting tape is applied to a power cable, a joint is inevitably used, common superconducting power equipment joints are obtained by welding the superconducting tape and a copper joint by using indium or tin, and then the copper joint is pressed by pressure, so that the purpose of electric connection is achieved. When liquid nitrogen is used as a refrigerant, the sealing problem of the liquid nitrogen is also considered, besides the conventional electrical connection, the refrigerant in a refrigeration pipeline is guaranteed not to leak, the VCR joint is most commonly used in the connection industry of the liquid pipeline at present and is adopted technically in a mature mode, the joint has the characteristics of good sealing performance, convenience in disassembly and assembly and the like, and the VCR joint is used as a mature product and has various different sizes for selection, so that how to integrally match the superconducting electrical joint with the VCR joint and form reliable superconducting cable connection is a key problem for laying and applying a superconducting power cable.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an integrated joint topology suitable for a high-temperature superconducting urban power cable, which can meet the working environment of the superconducting cable and realize the large-scale application of the superconducting cable.
The integrated joint topology suitable for the high-temperature superconducting city power cable comprises a superconducting tape and a copper pipe;
The high-temperature superconductive strip is spirally wound in the copper pipe, a bracket for supporting the high-temperature superconductive strip is arranged in the copper pipe, an organic insulating layer and a heat preservation layer are wound on the outer side of the copper pipe, a stainless steel pipe armor layer is arranged on the outer side of the copper pipe, and electric joints are respectively arranged at two ends of the copper pipe and are copper joints and are divided into a male joint and a female joint.
Further, the material of the organic insulating layer is kapton organic material or asbestos.
Further, the stainless steel pipe armor layer is filled with a heat insulation material.
Further, the inner diameter of the copper tube is 6mm, and the incidence angle of the spiral winding of the high-temperature superconductive tape is 35-45 degrees.
Further, a plurality of high-temperature superconductive tape layers are wound on the inner side of the copper pipe, and each high-temperature superconductive tape layer is wound by a plurality of high-temperature superconductive tapes.
Furthermore, the end part of the high-temperature superconductive tape and the electric joint are welded together by tin or indium in an oil bath temperature control mode.
Further, for the integrated joint of two sections adjacent high temperature superconducting cables, form electric connection through public joint and female joint interconnect, the copper pipe is connected through direct insertion type copper joint, copper pipe and direct insertion type copper joint welded fastening, and stainless steel pipe armor passes through VCR joint interconnect, and stainless steel pipe armor and VCR joint welded fastening.
The invention discloses an integrated connector suitable for a high-temperature superconducting urban power cable, which is designed into an integrated connector topology design of a superconducting power cable under 77K and has the advantages that the integrated connector topology design of the superconducting power cable matched with liquid nitrogen refrigeration is provided, the low-temperature environment of the superconducting power cable is ensured through a VCR connector and a double-layer stainless steel tube, the purpose of refrigeration is realized by utilizing the circulating flow of liquid nitrogen, and the purpose of convenient disassembly and assembly is realized through a direct-insert copper connector. The invention has simple design, can be used as a design scheme of the superconducting power cable for cities to promote large-scale commercial application of superconducting power equipment, can greatly reduce the energy consumption of power transmission and improve the power transmission capacity.
Drawings
Fig. 1 is a schematic structural diagram of an integrated joint topology suitable for use in a high temperature superconducting urban power cable of the present invention.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is given by way of specific examples:
Referring to fig. 1, in an integrated joint topology suitable for a high-temperature superconducting city power cable of the present invention, a high-temperature superconducting tape 11 is spirally wound inside a copper pipe 12, and the superconducting tape needs to be tightly attached to the copper pipe, so that a certain support needs to be filled inside to prevent the superconducting tape from loosening. A plurality of high-temperature superconductive tape layers can be wound on the inner side of the copper pipe, and each high-temperature superconductive tape layer is wound by a plurality of high-temperature superconductive tapes. In order to ensure that the cable has better mechanical bending property and simultaneously ensure that the attenuation of critical current of the belt material in the bending and winding process is not more than 5 percent, the bunched cable is prepared by adopting a copper pipe 12 with the inner diameter of 6mm, the incidence angle of the spiral winding of the superconductive belt material 11 is in the range of 35-45 degrees, and each layer is wound by 3 belt materials together. The copper pipe is hollow, so that liquid nitrogen can freely circulate in the pipe, and better refrigeration efficiency is achieved. In order to ensure insulation and heat preservation of the cable, an organic insulating layer 6 and a heat preservation layer 7 are wound on the copper pipe, wherein the organic insulating layer is usually Kapton organic material or asbestos.
The outer side of the copper pipe is provided with a stainless steel pipe armor layer 2, and the inner diameter of the stainless steel pipe armor layer is larger than the outer diameters of the bunched cable, the heat insulation layer and the insulating layer. The stainless steel tube is filled with heat insulating material as completely as possible to achieve good heat preservation effect.
The two ends of the copper pipe are respectively provided with an electric joint 5, wherein the electric joints are copper joints and are divided into a male joint and a female joint. The end of the high-temperature superconductive strip and the electric joint are welded together by adopting an oil bath temperature control mode through tin or indium, and the female joint of the copper joint can be locked on the male joint at low temperature (in a liquid nitrogen environment) by utilizing the difference of thermal expansion coefficients of different materials.
To the integrated joint of two sections adjacent high temperature superconducting cable, form electric connection through public joint and female joint interconnect, the copper pipe is connected through direct insertion formula copper joint 3, copper pipe and direct insertion formula copper joint welded fastening, stainless steel pipe armor passes through VCR and connects 4 interconnect, stainless steel pipe armor and VCR and connect welded fastening.
The wire outlet end of the cable is connected by adopting a mode of adding an insulating heat-preserving sleeve layer on an annular copper terminal, the annular copper terminal is directly welded on a copper pipe, and attention is required to be paid to insulation and heat-preserving cushion layers between the copper terminal and a double-layer stainless steel pipe and between the copper terminal and a liquid nitrogen inlet so as to ensure that the whole cable is not electrified and is in a good low-temperature environment. At the liquid nitrogen inlet, a compressor is needed to give a certain pressure to liquid nitrogen, the liquid nitrogen is forced to flow in a copper pipe at a certain flow speed, and flows out at the other end of a cable, and meanwhile, if two or more superconducting power cables are erected in parallel (such as a positive-negative loop of direct-current transmission and a three-phase loop of alternating-current transmission), the flow of the liquid nitrogen can form a circulating cooling loop by a plurality of compression pumps and a refrigerating machine.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111508405.2A CN114171254B (en) | 2021-12-10 | 2021-12-10 | Integrated joint topology suitable for high-temperature superconducting urban power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111508405.2A CN114171254B (en) | 2021-12-10 | 2021-12-10 | Integrated joint topology suitable for high-temperature superconducting urban power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114171254A CN114171254A (en) | 2022-03-11 |
| CN114171254B true CN114171254B (en) | 2024-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111508405.2A Active CN114171254B (en) | 2021-12-10 | 2021-12-10 | Integrated joint topology suitable for high-temperature superconducting urban power cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN114171254B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115458230B (en) * | 2022-08-12 | 2024-12-20 | 富通集团（天津）超导技术应用有限公司 | A superconducting current lead component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714426A (en) * | 2008-10-03 | 2010-05-26 | 美国超导公司 | Electricity transmission cooling system |
| CN110682236A (en) * | 2019-11-08 | 2020-01-14 | 中国原子能科学研究院 | Ice plug jacket assembly for repair and maintenance of metal face seal joints |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3096201B2 (en) * | 1993-12-28 | 2000-10-10 | 株式会社フジクラ | High temperature superconducting power cable |
| DE19504857C2 (en) * | 1995-02-14 | 2002-02-07 | Max Planck Gesellschaft | Gas permeable high voltage insulation |
| GB2331867A (en) * | 1997-11-28 | 1999-06-02 | Asea Brown Boveri | Power cable termination |
| KR102179619B1 (en) * | 2013-10-31 | 2020-11-18 | 엘에스전선 주식회사 | Very Low Temperature Cooling Device And Connecting Structure of Superconducting Device |
| CN104538753B (en) * | 2014-12-01 | 2017-03-29 | 盛威尔(惠州)电缆科技有限公司 | A kind of hyperconductive cable piecing devices |
| CN106253199B (en) * | 2016-08-08 | 2018-05-25 | 华北电力大学 | A kind of cold insulation high-temperature superconductive cable shielded layer end construction and connection method |
| CN212725625U (en) * | 2020-08-25 | 2021-03-16 | 苏州麦格尼特新技术有限公司 | Special superconducting cable joint |
-
2021
- 2021-12-10 CN CN202111508405.2A patent/CN114171254B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714426A (en) * | 2008-10-03 | 2010-05-26 | 美国超导公司 | Electricity transmission cooling system |
| CN110682236A (en) * | 2019-11-08 | 2020-01-14 | 中国原子能科学研究院 | Ice plug jacket assembly for repair and maintenance of metal face seal joints |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114171254A (en) | 2022-03-11 |
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