| 摘要 |
1,115,979. Superconducting cables. COMPAGNIE GENERALE D'ELECTRICITE. 10 Nov., 1966 [10 Nov., 1965], No. 50443/66. Headings H1A and H1K. [Also in Division F2] In a superconducting power cable a stack of superconducting bands 1, 1<SP>1</SP>, 1<SP>11</SP> insulated by bands 2, 2<SP>1</SP>, 211 are located within a pipe 3 which contains cryogenic liquid in contact with the exposed ends of the conductors and a sheath 5 provides thermal insulation. The insulating bands (which may be of P.T.F.E.) may be wider than the superconductors and this insulation may be channel-shaped (Fig. 2, not shown) enclosing the superconductors in spongy material (9, 9<SP>1</SP>, 9<SP>11</SP>) ; there being perforations (8, 8<SP>1</SP>, 8<SP>11</SP>) ; the channels to allow the coolant to contact the superconductors. The pipe 3 may be made of insulating material such as a synthetic resin or it may be metallic (Fig. 3, not shown) (e.g. corrugated aluminium). The superconductors may be made entirely of superconducting metal (e.g. niobium) or they may be formed from a metal or a resin strip coated with a suitable superconductor. For D.C. transmission it is preferable for adjacent conductors to carry currents flowing in opposite directions as shown and arrangements for multiphase A.C. transmission are illustrated (Figs. 5 and 6, not shown). |
