Cryogenic power cable
First Claim
1. A cryogenic power cable comprisingan electrical conductor having a cryogenic cooling medium passage therethrough,a layer of thermal insulating material surrounding the conductor, andan electric insulation layer surrounding the layer of thermal insulating material, the electric insulating layer comprising insulating paper or plastic film which has impregnated therein an insulating liquid and the electric insulating layer being cooled with a cryogenic cooling medium to a temperature in the range of from -40°
- C. to -100°
C.
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Accused Products
Abstract
A cryogenic power cable of a cryoresistive type having a conductor which is cooled with a cooling medium to permit large capacity power transmission by reducing thereby the electric resistance and the joule loss of the conductor. The temperature of the cable core is controlled through an ingenious arrangement comprising the conductor which incorporates therein a passage for the cooling medium, an electric insulation layer made of an ordinary electric insulating material and a thermal insulating material layer. The cable not only makes ultra-high voltage transmission of 500 to 1000 KV possible but also is advantageous on account of a simple and economic structure.
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Citations
13 Claims
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1. A cryogenic power cable comprisingan electrical conductor having a cryogenic cooling medium passage therethrough,a layer of thermal insulating material surrounding the conductor, andan electric insulation layer surrounding the layer of thermal insulating material, the electric insulating layer comprising insulating paper or plastic film which has impregnated therein an insulating liquid and the electric insulating layer being cooled with a cryogenic cooling medium to a temperature in the range of from -40°
- C. to -100°
C. - View Dependent Claims (2, 3, 4, 5, 6)
- C. to -100°
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7. A cryogenic power cable comprisingan electrical cryogenically cooled conductor,a layer of thermal insulating material surrounding the cryogenically cooled conductor, andan electric insulation layer surrounding the layer of thermal insulating material, the electric insulating layer comprising insulating paper or plastic film which has impregnated therein an insulating liquid and the electric insulating layer being cooled with a cryogenic cooling medium to a temperature in the range of from -40°
- C. to -100°
C. - View Dependent Claims (8, 9, 10, 11, 12)
- C. to -100°
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13. A cryogenic power cable comprisingan electrical conductor having a cryogenic cooling medium passage surrounding the conductor,a layer of thermal insulating material surrounding the passage, andan electric insulation layer surrounding the layer of thermal insulating material, the electric insulating layer comprising insulating paper or plastic film which has impregnated therein an insulating liquid and the electric insulating layer being cooled with a cryogenic cooling medium to a temperature in the range of from -40°
- C. to -100°
C.
- C. to -100°
Specification