Particle trap for compressed gas insulated transmission systems

Details Particle trap for compressed gas insulated transmission systems Particle trap for compressed gas insulated transmission systems

1984-04-26

1985-11-19

Askin, Laramie E.

Electricity: conductors and insulators

With fluids or vacuum

With fluid maintenance or conditioning means

174 28, 174100, H01B 906, H01B 904, H02G 506

Patent

active

045543992

ABSTRACT:
A particle trap is provided for gas insulated transmission lines having a central high voltage conductor supported within an outer coaxial conductive sheath by a dielectric support member. A cavity between the inner conductor and outer sheath is filled with a dielectric insulating gas. A cone-like particle deflector, mounted to the inner conductor, deflects moving particles away from the support member, to radially outer portions of the cavity. A conductive shield is disposed adjacent the outer sheath to form a field-free region in radially outer portions of the cavity, between the shield and the sheath. Particles traveling along the cavity are deflected by the cone-like deflector into the field-free region where they are held immobile. In a vertical embodiment, particles enter the field-free region through an upper end of a gap formed between shield and sheath members. In a horizontal embodiment, the deflector cone has a base which is terminated radially internally of the shield. Apertures in the shield located adjacent the deflector allow passage of deflected particles into the field-free region. The dielectric support member is thereby protected from contaminating particles that may otherwise come to rest thereon.

REFERENCES:
patent: 3515939 (1970-06-01), Trump
patent: 3856978 (1974-12-01), Sletten et al.
patent: 4096345 (1978-06-01), Kemeny
patent: 4105859 (1978-08-01), Cookson et al.
patent: 4161621 (1979-07-01), Bolin et al.
patent: 4281209 (1981-07-01), Yoshioka et al.
patent: 4440970 (1984-04-01), Dale

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