Particle trap for compressed gas insulated transmission systems

Patent · Tue Jan 01 04:00:00 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
• 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

/174/
adjacent
allow
allow passage
apertures
base
cavity
central
coaxial
compressed
compressed gas
conductive
conductive sheath
conductor
cone
cone-like
contaminating
contaminating particles
deflected
deflected particles
deflector
deflects
dielectric
dielectric insulating
dielectric support
disposed
disposed adjacent
embodiment
enter
field-free
filled
form
formed
free region
gap
gap formed
gas
gas insulated
held
horizontal
immobile
inner
inner conductor
insulated
insulated transmission
insulating
insulating gas
internally
lines
located
located adjacent
mounted
moving
moving particles
otherwise
outer
outer coaxial
outer portion
outer sheath
particle
particle trap
particles
particles travel
passage
portions
protected
provided
radially
radially outer
region
sheath
shield
shield located
support
supported
systems
terminated
thereon
transmission
transmission line
transmission lines
transmission systems
trap
traveling
upper
vertical
voltage
voltage conductor