US3767837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-voltage pressurized gas-insulated power transmission systems
Assignee: ABB Inc USA
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Filing: 1972-08-24
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Granted: 1973-10-23
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Expires: 1992-08-24
Abstract
Abstract A multiphase high-voltage pressurized gas insulated electrical power transmission system for underground applications incorporating a central conductor for each phase, each central conductor being mounted within a grounded conductive housing concentrically arranged with its associated central conductor with the concentric alignment being maintained by insulating spacers. Each of the central conductors and associated housings for the multiphase system are mounted within a steel housing and arranged in a triangular or delta configuration. Conductors of adjacent sections are joined by suitable dielectrically shielded plug-in contact assemblies which provide for electrical continuity between adjacent central conductors of the multiphase bus assembly sections. The concentric grounded housings are preferably perforated to facilitate egress of contaminating particles which may be present within the interior of each grounded housing. The outer steel housing sections are joined, end to end by butt joint welding techniques. In another preferred embodiment, the grounded aluminum housings surround only selected portions of their associated inner conductors and single ground screen means are employed in each housing section for collection of contaminating particles which may be present within the assembly.
Inventors
- 👤 H Graybill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:04
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/06; H01B9/0644; H01B9/0666; H01B9/0672; H02; H02G; H02G5/00; H02G5/06; H02G5/063; H02G5/065; H02G5/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
230 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of grounded metallic housings each having within each group surrounding an associated one of said conductors, the housings within each group being arranged at spaced intervals along their respective conductors and spaced from one another so as to provide gaps between the outer surfaces of the groups of adjacent housings; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated coNductor; the gaps between adjacent housings being greater than the axial length of the housings mounted along each conductor; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement, and for electrically grounding said housings to said enclosure; a perforated metallic sheet mounted within said enclosure and positioned across the bottom of said enclosure; said sheet being electrically connected to said enclosure to form a hollow truncated cylindrical region for collecting particles which may be present within the interior of said enclosure, said region being free of any voltage gradient to retain particles entering said region within said region.
Claim 2
Dependent Claim
230 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of grounded metallic housings each having within each group surrounding an associated one of said conductors, the housings within each group being arranged at spaced intervals along their respective conductors and spaced from one another so as to provide gaps between the outer surfaces of the groups of adjacent housings; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated coNductor; the gaps between adjacent housings being greater than the axial length of the housings mounted along each conductor; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement, and for electrically grounding said housings to said enclosure; a perforated metallic sheet mounted within said enclosure and positioned across the bottom of said enclosure; said sheet being electrically connected to said enclosure to form a hollow truncated cylindrical region for collecting particles which may be present within the interior of said enclosure, said region being free of any voltage gradient to retain particles entering said region within said region.
Claim 3
Dependent Claim
12 words
The assembly of claim 1 wherein said enclosure is formed of steel.
Claim 4
Dependent Claim
15 words
The assembly of claim 2 wherein said conductors and said housings are formed of aluminum.
Claim 5
Dependent Claim
38 words
The assembly of claim 1 wherein said transmission system is a three phase system having first, second and third conductors for each of the three phases; the longitudinal axes of said conductors being arranged in a delta configuration.
Claim 6
Dependent Claim
28 words
The assembly of claim 1 wherein the free ends of said conductors are provided with plug-in contact assemblies for joining said conductors to associated conductors of adjacent assemblies.
Claim 7
Dependent Claim
19 words
The assembly of claim 1 wherein the interior of said enclosure is filled with a high dielectric insulating gas.
Claim 8
Dependent Claim
213 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of elongated grounded metallic housings the housings of each group being arranged at spaced intervals and surrounding an associated one of said conductors; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated conductor; the gaps between adjacent housings of a group being adapted to allow particles to fall therethrough; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement and maintaining said housings a spaced distance from said enclosure, and for electrically grounding said housings to said enclosure; said housings each being perforated to permit particles which may be present in the region between a conductor and its associated grounded housing to pass through said openings to enter into the hollow region between the exteriors of said housings and the interior of said enclosure, which region has no voltage gradient in order to retain particles entering said region within said region.
Claim 9
Dependent Claim
213 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of elongated grounded metallic housings the housings of each group being arranged at spaced intervals and surrounding an associated one of said conductors; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated conductor; the gaps between adjacent housings of a group being adapted to allow particles to fall therethrough; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement and maintaining said housings a spaced distance from said enclosure, and for electrically grounding said housings to said enclosure; said housings each being perforated to permit particles which may be present in the region between a conductor and its associated grounded housing to pass through said openings to enter into the hollow region between the exteriors of said housings and the interior of said enclosure, which region has no voltage gradient in order to retain particles entering said region within said region.
Claim 10
Dependent Claim
141 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of elongated grounded metallic housings the housings of each group being arranged at spaced intervals and surrounding an associated one of said conductors; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated conductor; the gaps between adjacent housings of a group being adapted to allow particles to fall therethrough; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement and maintaining said housings a spaced distance from said enclosure.
Claim 11
Dependent Claim
141 words
A multiphase electrical power transmission system comprising a tubular metallic conductor for each of said phases having their longitudinal axes arranged at equally spaced intervals about an imaginary circle; a grounded metallic enclosure surrounding all of said conductors and being coaxial with the center of said imaginary circle; a plurality of groups of elongated grounded metallic housings the housings of each group being arranged at spaced intervals and surrounding an associated one of said conductors; each housing encircling at least one insulating spacer supporting its associate conductor for maintaining its encircling housing in concentric arrangement with its associated conductor; the gaps between adjacent housings of a group being adapted to allow particles to fall therethrough; means secured between said enclosure and said housings for maintaining said conductors in the aforesaid arrangement and maintaining said housings a spaced distance from said enclosure.
References Cited (Backward Citations)
US2141912A
Cited
US3361870A
Cited
US3391243A
Cited
US3349168A
Cited
US3585271A
Cited
US3610947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |