Particle trap for compressed gas insulated transmission systems
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.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4554399
- OSTI ID:
- 5904014
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
24 POWER TRANSMISSION AND DISTRIBUTION
CABLES
CONDUCTOR DEVICES
DESIGN
DIELECTRIC MATERIALS
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
GAS-INSULATED CABLES
MATERIALS
PARTICLES
PARTICULATES
POWER TRANSMISSION LINES
REMOVAL
SEPARATION EQUIPMENT
SLEEVES