Internally cooled high-energy cable and a method of manufacturin

Details Internally cooled high-energy cable and a method of manufacturin Internally cooled high-energy cable and a method of manufacturin

1975-01-29

1976-11-02

Grimley, Arthur T.

Electricity: conductors and insulators

With fluids or vacuum

With cooling or fluid feeding, circulating or distributing

174128R, 174130, H01B 734

Patent

active

039898849

ABSTRACT:
A cable includes a tubular multi-layer electric conductor, electric insulation surrounding the electric conductor, and an outer cable jacket surrounding the electric insulation. An inner tubular member of titanium or alloyed stainless steel is accommodated in the electric conductor and defines a channel for a cooling medium such as water. At least one of the layers constituting the electric conductor is a circumferentially complete tubular element surrounding or surrounded by a layer comprising a plurality of juxtaposed elongated electric conductor elements. In the region of contact of the electric conductor with the inner tubular member, there is provided at least one groove extending longitudinally of the cable for conducting the cooling medium which escapes from the cooling channel in case of damage to the inner tubular member to the ends of the cable so as to indicate the occurrence of such damage. A method of manufacturing such cable includes shrinking the electric conductor on the inner tubular member, joining a plurality of the inner tubular members by welding at a high temperature, and subsequently joining the electric conductors surrounding the inner tubular members by welding at a lower temperature.

REFERENCES:
patent: 3201507 (1965-08-01), Johnsen
patent: 3613231 (1971-10-01), Pugh
patent: 3666879 (1972-05-01), Hirsch et al.
Advantages of 400 KV Internally Oil-Cooled Cable, Electrical Times, vol. 158, No. 12, 17 Sept. 70, (S1330-0105), pp. 59-60.

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