CN101982902B - Interconnecting structure for low-temperature insulation superconducting cable shielding conductor - Google Patents
Interconnecting structure for low-temperature insulation superconducting cable shielding conductor Download PDFInfo
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- CN101982902B CN101982902B CN 201010281477 CN201010281477A CN101982902B CN 101982902 B CN101982902 B CN 101982902B CN 201010281477 CN201010281477 CN 201010281477 CN 201010281477 A CN201010281477 A CN 201010281477A CN 101982902 B CN101982902 B CN 101982902B
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Abstract
The invention discloses an extraction device and an interconnecting structure for a low-temperature insulation superconducting cable shielding conductor. The shielding conductor extraction device is made of a conductive material, and comprises a sleeve part and an extraction part, wherein a central through hole is reserved in the cylindrical sleeve part; the extraction part extends outward from the lateral side of the sleeve part; and a connecting hole is reserved in the extraction part. The shielding conductor interconnecting structure comprises two adjacent low-temperature insulation superconducting cables, wherein each low-temperature insulation superconducting cable comprises an insulating core and a jacket; the outer layer of the insulating core is a shielding conductor; the insulating core of each low-temperature insulation superconducting cable is sleeved with one shielding conductor extraction device; the shielding conductor extraction devices of the two low-temperature insulation superconducting cables are connected through a lead wire; two ends of the lead wire are connected in the connecting holes of the two shielding conductor extraction devices respectively; an extraction jacket is arranged outside the lead wire; and two ends of the extraction jacket are communicated with the jackets of the two low-temperature insulation superconducting cables respectively.
Description
Technical field
The present invention relates to a kind of device for connecting the low-temperature insulation superconductive cable shielded conductor, belong to superconduction engineering applied technical field.
Background technology
Low-temperature insulation superconductive cable is comprised of hyperconductive cable insulating core (being designated hereinafter simply as " insulating core ") and jacket.Wherein insulating core generally is comprised of following part: metal supporting frames, around the center superconductor of described metal supporting frames, around the electric insulation layer of described center superconductor, around the shielded conductor of described electric insulation layer, wherein shielded conductor can all or part ofly be comprised of superconductor.Described jacket is comprised of two-layer concentric metal tube usually, and this double layer of metal pipe is thermal insulation each other.The cryogenic liquid that is included in the jacket is cooled to center superconductor and shielded conductor below the critical temperature of superconductor by dielectric.Described shielded conductor is connected to earth potential.
The interior size of current of the induced current that produces in the low-temperature insulation superconductive cable shielded conductor and center superconductor close (equating opposite direction with size of current by center conductor in theory).For the hyperconductive cable by large electric current, this induced current can be very large.In view of earth current can not be excessive, so be infeasible with the direct ground connection of shielded conductor.Solution is that the shielded conductor with the three-phase alternating current cable interconnects, the electric current that obtains be each phase current vector and, the size of the resultant current that obtains like this is zero or approaches zero, therefore can be connected to ground.
If adopt resistive material to connect between the shielded conductor of three-phase alternating current cable, can increase the Joule heat of system, increase the load of refrigerating system.At present domestic aspect low-temperature insulation superconductive cable research and use fewerly, corresponding shielded conductor ejector is in space state especially.
Summary of the invention
The technical problem to be solved in the present invention provides the superconductive cable screens interconnection of conductors structure of a kind of low resistance, low energy consumption.
In order to solve this technical problem, a kind of low-temperature insulation superconductive cable shielded conductor of the present invention interconnection structure comprises two adjacent low-temperature insulation superconductive cables, described low-temperature insulation superconductive cable comprises insulating core and jacket, the skin of described insulating core is shielded conductor, it is characterized in that: all overlapping on the insulating core of every low-temperature insulation superconductive cable has a shielded conductor ejector, described shielded conductor ejector comprises sleeve part and the lead division with connecting hole with central through hole, one end of described sleeve part is provided with taper surface, sleeve part is enclosed within on the described insulating core, be electrically connected by the welding realization between the electric insulation layer that described taper surface inserts insulating core and the shielded conductor and with described shielded conductor, described lead division stretches out from the side of described sleeve part, link to each other by lead-out wire between the shielded conductor ejector of described two low-temperature insulation superconductive cables, the two ends of lead-out wire are connected in the connecting hole of two shielded conductor ejectors, the outside of described lead-out wire is provided with draws jacket, and the two ends of drawing jacket are connected with the jacket of described two low-temperature insulation superconductive cables respectively.
Preferably, described lead division is cylindrical, and the axis of lead division and the axis of described sleeve part are perpendicular.
Preferably, the connecting hole of described lead division is blind hole.
Preferably, described shielded conductor ejector is formed by a block of metal materials processing, and described sleeve part links to each other with the lead division one.
Preferably, described lead-out wire comprise two ends leading-out terminal, be connected to the metal supporting frames between the leading-out terminal and be centered around the superconductive tape of metal supporting frames outside.
Further, described metal supporting frames is comprised of two sections flexible cords and one section rigid line being connected between two sections flexible cords, between described flexible cord and the rigid line by the metallic sheath crimping.
Further, described metal supporting frames all is made of flexible cord.
The invention has the beneficial effects as follows that shielded conductor ejector of the present invention is simple in structure, easy for installation, can with the shielded conductor good contact of hyperconductive cable, contact resistance is very little, thus the heat that produces is few, can not increase the load of refrigerating system.Shielded conductor interconnection structure of the present invention utilizes above-mentioned shielded conductor ejector and lead-out wire can realize interconnection between adjacent two superconductive cable screens conductors, has at low temperatures the superconduction ability, have advantage easy to connect, can satisfy well interconnective demand between the low-temperature insulation superconductive cable shielded conductor.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the structural representation of shielded conductor ejector of the present invention.
Fig. 2 is the schematic diagram of superconductive cable screens interconnection of conductors structure of the present invention.
Fig. 3 is the schematic diagram of shielded conductor interconnection structure between three hyperconductive cables of the present invention.
Fig. 4 is the cross sectional representation of shielded conductor ejector of the present invention when being enclosed within on the insulating core.
Fig. 5 is the wrapped schematic diagram on metal supporting frames of center superconductor.
Fig. 6 is the annexation schematic diagram of shielded conductor ejector and lead-out wire, shielded conductor.
Fig. 7 is the structural representation of lead-out wire.
Embodiment
As shown in Figure 1, a kind of low-temperature insulation superconductive cable shielded conductor of the present invention ejector 100 can be made by the electric conducting material of the low-resistivities such as copper, and it comprises a sleeve part 101 and a lead division 104.Wherein, sleeve part 101 is for cylindrical shape and have a central through hole 102, and lead division 104 is cylindrical, and the axis of the axis of lead division 104 and sleeve part 101 is perpendicular.Lead division 104 stretches out from the side of sleeve part 101, has a connecting hole 105 in the lead division 104, and connecting hole 105 is blind hole.One end of sleeve part 101 is provided with taper surface 103.For reliability and the low resistance that guarantees to connect, this shielded conductor ejector 100 is preferably formed by a block of metal materials processing, links to each other thereby make its sleeve part 101 form one with lead division 104.
Utilize above-mentioned shielded conductor ejector 100, can realize being connected to each other of two adjacent low-temperature insulation superconductive cable shielded conductors.
As shown in Figure 2, two adjacent low-temperature insulation superconductive cables comprise jacket 1,1 ' and the insulating core 2,2 ' of the inside, all overlap an above-mentioned shielded conductor ejector 100,100 ' in every insulating core 2,2 ' end.Wherein insulating core 2, structure such as Fig. 4, shown in Figure 5 of 2 ', center superconductor 202 surrounds the outside of metal supporting frames 201, and the outside of center superconductor 202 is electric insulation layers 203, and the outside of electric insulation layer 203 is shielded conductors.
As shown in Figure 6, when shielded conductor ejector 100,100 ' is enclosed within on the insulating core, the shielded conductor 204 on stripping of insulatin core top layer, electric insulation layer 203 is passed from the central through hole of shielded conductor ejector with interior part, the shielded conductor 204 of strip off then is enclosed within on the taper surface 103 of its sleeve part, realizes reliable the electrical connection by welding.
Continuation is with reference to Fig. 2, two shielded conductor ejectors 100 that low-temperature insulation superconductive cable is interior, be connected by a lead-out wire 3 between 100 ', the two ends of lead-out wire 3 are connected to the connecting hole 105 interior (as shown in Figure 6) of two shielded conductor ejectors, when mounted, can adopt the mode of clamping pliers crimping to make shielded conductor ejector 100,100 ' reliably is connected with the end of lead-out wire 3, the outside of lead-out wire 3 is provided with draws jacket 4, the two ends of drawing jacket 4 respectively with the jacket 1 of two low-temperature insulation superconductive cables, 1 ' is connected, refrigerant also can be entered draws in the jacket 4, lead-out wire 3 is freezed, make lead-out wire 3 also can keep superconducting state, reduce the caloric value of shielded conductor structure.
As shown in Figure 7, a kind of preferred structure of lead-out wire 3 is leading-out terminals 301 of comprising two ends, is connected to the metal supporting frames between the leading-out terminal 301 and is centered around the superconductive tape 302 of metal supporting frames outside.Be electrically connected reliably between leading-out terminal 301 and the superconductive tape 302.Wherein, metal supporting frames can be comprised of two sections flexible cords 303 and the one section rigid line 305 that is connected between two sections flexible cords, passes through metallic sheath 304 crimping between flexible cord 303 and the rigid line 305.Also can realize by the mode of crimping being electrically connected reliably between flexible cord 303 and the leading-out terminal 301.Flexible cord is adopted at the two ends of lead-out wire, and installation is convenient in the flexibility in the time of can increasing lead-out wire and be connected with the shielded conductor ejector.Certainly metal supporting frames also can all be made of flexible cord.
Above-mentioned shielded conductor interconnection structure can expand to the interconnection of more low-temperature insulation superconductive cable shielded conductors, and Fig. 3 just shows three interconnection structures between the hyperconductive cable.Because bucking current mainly transmits by superconductive tape 302, so controlled well the thermal losses that the shielded conductor electric current causes.
Claims (7)
1. low-temperature insulation superconductive cable shielded conductor interconnection structure, comprise two adjacent low-temperature insulation superconductive cables, described low-temperature insulation superconductive cable comprises insulating core (2) and jacket (1), the skin of described insulating core (2) is shielded conductor, it is characterized in that: all overlapping on the insulating core of every low-temperature insulation superconductive cable (2) has a shielded conductor ejector (100), described shielded conductor ejector (100) comprises that one has the sleeve part (101) of central through hole (102) and the lead division (104) that has connecting hole (105), one end of described sleeve part (101) is provided with taper surface (103), sleeve part (101) is enclosed within on the described insulating core (2), described shielded conductor is stripped near an end of described taper surface (103), be electrically connected by welding realization between the electric insulation layer that described taper surface (103) inserts insulating core (2) and the shielded conductor of strip off and with the shielded conductor of described strip off, described lead division (104) stretches out from the side of described sleeve part (101), link to each other by lead-out wire (3) between the shielded conductor ejector of described two low-temperature insulation superconductive cables, the two ends of lead-out wire (3) are connected in the connecting hole (105) of two shielded conductor ejectors, the outside of described lead-out wire (3) is provided with draws jacket (4), and the two ends of drawing jacket (4) are connected with the jacket (1) of described two low-temperature insulation superconductive cables respectively.
2. shielded conductor interconnection structure according to claim 1 is characterized in that: described lead division (104) is for cylindrical, and the axis of the axis of lead division (104) and described sleeve part (101) is perpendicular.
3. shielded conductor interconnection structure according to claim 1 is characterized in that: the connecting hole of described lead division (105) is blind hole.
4. shielded conductor interconnection structure according to claim 1, it is characterized in that: described shielded conductor ejector is formed by a block of metal materials processing, and described sleeve part (101) links to each other with lead division (104) one.
5. shielded conductor interconnection structure according to claim 1 is characterized in that: described lead-out wire (3) comprise two ends leading-out terminal (301), be connected to the metal supporting frames between the leading-out terminal and be centered around the superconductive tape (302) of metal supporting frames outside.
6. shielded conductor interconnection structure according to claim 5, it is characterized in that: described metal supporting frames is comprised of two sections flexible cords (303) and one section rigid line (305) of being connected between two sections flexible cords, between described flexible cord (303) and the rigid line (305) by metallic sheath (304) crimping.
7. shielded conductor interconnection structure according to claim 5, it is characterized in that: described metal supporting frames all is made of flexible cord.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010281477 CN101982902B (en) | 2010-09-14 | 2010-09-14 | Interconnecting structure for low-temperature insulation superconducting cable shielding conductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010281477 CN101982902B (en) | 2010-09-14 | 2010-09-14 | Interconnecting structure for low-temperature insulation superconducting cable shielding conductor |
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| CN101982902A CN101982902A (en) | 2011-03-02 |
| CN101982902B true CN101982902B (en) | 2013-03-20 |
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| CN 201010281477 Active CN101982902B (en) | 2010-09-14 | 2010-09-14 | Interconnecting structure for low-temperature insulation superconducting cable shielding conductor |
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| JP5829634B2 (en) * | 2013-01-23 | 2015-12-09 | 昭和電線ケーブルシステム株式会社 | Superconducting cable terminal structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574112A (en) * | 2003-06-19 | 2005-02-02 | 住友电气工业株式会社 | Phase split structure of multiphase superconducting cable |
| CN1601659A (en) * | 2003-09-24 | 2005-03-30 | 住友电气工业株式会社 | Terminal structure of superconducting cable and superconducting cable line therewith |
| CN1808813A (en) * | 2004-12-01 | 2006-07-26 | 尼克桑斯公司 | Connection device for superconductive cable screens |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2156606Y (en) * | 1993-04-21 | 1994-02-16 | 国营涪江机器厂 | Soft cable direct connector |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1574112A (en) * | 2003-06-19 | 2005-02-02 | 住友电气工业株式会社 | Phase split structure of multiphase superconducting cable |
| CN1601659A (en) * | 2003-09-24 | 2005-03-30 | 住友电气工业株式会社 | Terminal structure of superconducting cable and superconducting cable line therewith |
| CN1808813A (en) * | 2004-12-01 | 2006-07-26 | 尼克桑斯公司 | Connection device for superconductive cable screens |
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| CN101982902A (en) | 2011-03-02 |
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Address after: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee after: Shanghai Cable Research Institute Co., Ltd. Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: Shanghai Cable Research Institute |
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Effective date of registration: 20200326 Address after: 201900 No. 558, Shanlian Road, Baoshan District, Shanghai Patentee after: Shanghai International Superconducting Technology Co., Ltd Address before: 200093 No. 1000, military road, Shanghai, Yangpu District Patentee before: SHANGHAI ELECTRIC CABLE RESEARCH INSTITUTE Co.,Ltd. |