Particle trap contact for gas insulated transmission lines
AssigneeWestinghouse Electric Corp.
InventorGary K. Bowman
Life of this patent
Estimating the term…
Abstract
A gas insulated transmission line includes an elongated outer sheath at ground potential, an inner conductor disposed within the outer sheath at high electrical potential, an insulating gas electrically insulating the inner conductor from the outer sheath, and an insulating spacer insulatably supporting the inner conductor within the outer sheath. An electrically conducting particle-trapping ring is disposed within, and spaced apart form, the outer sheath between the spacer and the outer sheath. The ring and the outer sheath form a low field region therebetween for the entrapment of conducting particles therein. Means are included for electrically connecting the particle-trapping ring to the outer sheath.
Claims10
A gas-insulated transmission line comprising:
- an elongated cylindrical outer sheath at low electrical potential,
- an elongated inner conductor disposed within said outer sheath and at high electric potential with respect to said outer sheath;
- an insulating gas disposed within said outer sheath and electrically insulating said inner conductor from said outer sheath;
- an insulating spacer insulatably supporting said inner conductor within said outer sheath;
- an electrically-conducting particle-trapping ring disposed within, and spaced-apart from, said outer sheath intermediate said spacer and said outer sheath, said ring and said outer sheath forming a low field region therebetween for the entrapment of particles therein, said ring having a contact opening therein;
- and
- means for electrically connecting said ring and said outer sheath comprising:
- an electrically-conducting retaining cup disposes within said ring contact opening and electrically connected to said ring;
- a holding member disposed within said retaining cup and extending outwardly to said outer sheath, said holding member having an opening therein;
- a first spring disposed within said retaining cup and contacting said holding member, said spring exerting a force against said holding member to hold said holding member against said outer sheath;
- a contact button disposed within said retaining cup and extending outwardly through said holding member opening to said outer sheath;
- and
- an electrically-conducting second spring disposed within said retaining cup and contacting said retaining cup and said contact button, said second spring exerting a force against said contact button to hold said contact button against said outer sheath.
Dependencies are inferred from the claim text.