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Title: Particle trap for compressed gas insulated transmission systems

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.

Inventors:
 [1]
  1. (Pittsburgh, PA)
Issue Date:
Research Org.:
Westinghouse Electric Corp
OSTI Identifier:
865677
Patent Number(s):
4554399
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
ET-78-C-01-3029
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
particle; trap; compressed; gas; insulated; transmission; systems; provided; lines; central; voltage; conductor; supported; outer; coaxial; conductive; sheath; dielectric; support; cavity; inner; filled; insulating; cone-like; deflector; mounted; deflects; moving; particles; radially; portions; shield; disposed; adjacent; form; field-free; region; traveling; deflected; held; immobile; vertical; embodiment; enter; upper; gap; formed; horizontal; cone; base; terminated; internally; apertures; located; allow; passage; protected; contaminating; otherwise; thereon; particle trap; compressed gas; outer portion; transmission lines; outer sheath; disposed adjacent; transmission line; inner conductor; gas insulated; insulated transmission; insulating gas; located adjacent; radially outer; transmission systems; voltage conductor; gap formed; contaminating particles; shield located; outer coaxial; moving particles; dielectric insulating; dielectric support; free region; particles travel; allow passage; deflected particles; conductive sheath; /174/

Citation Formats

Cookson, Alan H. Particle trap for compressed gas insulated transmission systems. United States: N. p., 1985. Web.
Cookson, Alan H. Particle trap for compressed gas insulated transmission systems. United States.
Cookson, Alan H. Tue . "Particle trap for compressed gas insulated transmission systems". United States. https://www.osti.gov/servlets/purl/865677.
@article{osti_865677,
title = {Particle trap for compressed gas insulated transmission systems},
author = {Cookson, Alan H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

Patent:

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