IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0840336
(2004-05-07)
|
우선권정보 |
JP-2003-174396(2003-06-19) |
발명자
/ 주소 |
- Ashibe,Yuuichi
- Takahashi,Yoshihisa
- Honjo,Shoichi
- Etoh,Keisuke
|
출원인 / 주소 |
- Sumitomo Electric Industries, Ltd.
- The Tokyo Electric Power Company, Incorporated
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
6 |
초록
▼
A superconducting cable joint structure is a structure used to joint together superconducting cables used at cryogenic temperature or to joint together a terminal of the superconducting cable and a normal conducting cable, and it includes a joint insulation layer arranged radially outer than a porti
A superconducting cable joint structure is a structure used to joint together superconducting cables used at cryogenic temperature or to joint together a terminal of the superconducting cable and a normal conducting cable, and it includes a joint insulation layer arranged radially outer than a portion connecting the superconducting cables' respective conductors together or the superconducting cable's conductor and the normal conducting cable's conductor together, and at least one coolant path provided at the joint insulation layer to cool the portion connecting the conductors together. The cable cores can have their connection prevented from generating heat to have an increased temperature.
대표청구항
▼
What is claimed is: 1. A structure jointing together a terminal of a superconducting cable and a normal conducting cable, the structure comprising: a joint insulation layer provided in contact with an external circumference of a conductor connection connecting together a conductor of said supercond
What is claimed is: 1. A structure jointing together a terminal of a superconducting cable and a normal conducting cable, the structure comprising: a joint insulation layer provided in contact with an external circumference of a conductor connection connecting together a conductor of said superconducting cable and a conductor of said normal conducting cable; and at least a single coolant path provided within said joint insulation layer to cool said conductor connection. 2. The structure of claim 1, wherein: said superconducting cable has an external casing and a cable core inserted into an internal space of said external casing; said cable core has a former formed of a long filament, a superconducting layer provided on a radially outer surface of said former, and an insulation layer arranged radially outer than said superconducting layer; and said internal space serves as a coolant layer passing a coolant therethrough, said coolant layer directly contacting said joint insulation layer, with said coolant path passing the coolant of said coolant layer. 3. The structure of claim 2, wherein: said superconducting cable has more than one said cable core, each having a shield layer with a superconducting wire arranged radially outer than said insulation layer, and a protection layer formed of an insulator and arranged radially outer than said shield layer; and said superconducting layer of said cable core and said conductor of said normal conducting cable are connected together via said conductor connection covered with said joint insulation layer. 4. The structure of claim 1, wherein said joint insulation layer is formed of coolant impregnated papers deposited in layers. 5. The structure of claim 1, wherein said conductor connection includes a conductor connection sleeve compression-connected to a radially outer surface of said conductor of said superconducting cable and said conductor of said normal conducting cable arranged to abut against each other. 6. The structure of claim 5, wherein said coolant path has an inclined path connecting said radially inner opening to a radially outer opening of said coolant path. 7. The structure of claim 5, wherein: said superconducting cable has a cable core; said cable core has a former; and said cable core has a spirally wound, multilayered superconducting layer, said cable core has a terminal with said former and said multilayered superconducting layer exposed stepwise, and said conductor connection sleeve has a radially inner surface connected to said former and said multilayered superconducting layer exposed stepwise. 8. The structure of claim 1, wherein said joint insulation layer is formed of an insulating resin molding provided with said coolant path. 9. The structure of claim 1, wherein: said superconducting cable and said normal conducting cable are connected together via said conductor connection such that said conductor of said normal conducting cable and said conductor of said superconducting cable are connected together via said conductor connection circumferentially provided with said joint insulation layer; and said coolant path is arranged at an interface of an end surface of said joint insulation layer and an outer end surface of said normal conducting cable. 10. The structure of claim 9, wherein: said superconducting cable has a cable core; and said interface is inclined relative to a longitudinal direction of said cable core and is provided with said coolant path. 11. The structure of claim 5, wherein said coolant path has a radially inner opening along a radially outer surface of said conductor connection sleeve to allow said radially outer surface to directly contact said coolant. 12. A structure jointing together a first superconducting cable and a second superconducting cable that are used at cryogenic temperatures, the structure comprising: a joint insulation layer provided in contact with an external circumference of a conductor connection connecting together a conductor of said first superconducting cable and a conductor of said second superconducting cable; and at least a single coolant path provided within said joint insulation layer to cool said conductor connection. 13. The structure of claim 12, wherein: said first superconducting cable has an external casing and a cable core inserted into an internal space of said external casing; said cable core has a former formed of a long filament, a superconducting layer provided on a radially outer surface of said former, and an insulation layer arranged radially outer than said superconducting layer; and said internal space serves as a coolant layer passing a coolant therethrough, said coolant layer directly contacting said joint insulation layer, with said coolant path passing the coolant of said coolant layer. 14. The structure of claim 13, wherein: said first superconducting cable has more than one said cable core, each having a shield layer with a superconducting wire arranged radially outer than said insulation layer, and a protection layer formed of an insulator and arranged radially outer than said shield layer; and said superconducting layer of said cable core and a superconducting layer of a cable core of said second superconducting cable are connected together via said conductor connection covered with said joint insulation layer. 15. The structure of claim 12, wherein said joint insulation layer is formed of coolant impregnated papers deposited in layers. 16. The structure of claim 12, wherein: said conductor connection includes a conductor connection sleeve that is compression-connected to a radially outer surface of said conductor of said first superconducting cable and that is compression-connected to a radially outer surface of said conductor of said second superconducting cable; and said conductor of said first superconducting cable is arranged to abut against said conductor of said second superconducting cable. 17. The structure of claim 16, wherein said coolant path has an inclined path connecting said radially inner opening to a radially outer opening of said coolant path. 18. The structure of claim 16, wherein: said first superconducting cable has a cable core; said cable core has a former; said cable core has a spirally wound, multilayered superconducting layer; said cable core has a terminal with said former and said multilayered superconducting layer exposed stepwise; and said conductor connection sleeve has a radially inner surface connected to said former and said multilayered superconducting layer exposed stepwise. 19. The structure of claim 12, wherein said joint insulation layer is formed of an insulating resin molding provided with said coolant path. 20. The structure of claim 12, wherein: said first superconducting cable and said second superconducting cable are connected together via said conductor connection such that said conductor of said first superconducting cable and said conductor of said second superconducting cable are connected together via said conductor connection circumferentially provided with said joint insulation layer; and said coolant path is arranged at an interface of an end surface of said joint insulation layer and an outer surface of said conductor connection. 21. The structure of claim 20, wherein: said first superconducting cable has a cable core; and said interface is inclined relative to a longitudinal direction of said cable core.
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