Particle trap for compressed gas insulated transmission systems

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865677

Cookson, Alan H ^[1]

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1. Pittsburgh, PA

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.

• Research Organization: Westinghouse Electric Corp., Pittsburgh, PA (United States)
• DOE Contract Number: ET-78-C-01-3029
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4554399
• OSTI ID: 865677
• Country of Publication: United States
• Language: English

Related Subjects

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/