Ceramic end seal design for high temperature high voltage nuclea

Details Ceramic end seal design for high temperature high voltage nuclea Ceramic end seal design for high temperature high voltage nuclea

1977-10-13

1979-02-13

Kozma, Thomas J.

Electricity: conductors and insulators

With fluids or vacuum

Conduit or cable end structure

174 75C, 174 77R, 174 80, H02G 1522

Patent

active

041397240

ABSTRACT:
A coaxial, hermetically sealed end structure is described for electrical instrumentation cables. A generally tubular ceramic body is hermetically sealed within a tubular sheath which is in turn sealed to the cable sheath. One end of the elongated tubular ceramic insulator is sealed to a metal end cap. The other end of the elongated tubular insulator has an end surface which is shaped concave relative to a central conductor which extends out of this end surface. When the end seal is hermetically sealed to an instrumentation cable device and the central conductor is maintained at a high positive potential relative to the tubular metal sheath, the electric field between the central conductor and the outer sheath tends to collect electrons from the concave end surface of the insulator. This minimizes breakdown pulse noise generation when instrumentation potentials are applied to the central conductor.

REFERENCES:
patent: 3017452 (1962-01-01), Rongred
patent: 3904264 (1975-09-01), Oertle

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