Patent US3421300A successfully refreshed from Google Patents.
US3786170A
Expired / Lapsed
US
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Insulation gas filled encapsulated high voltage electrical conductor
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1972-07-12
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Granted: 1974-01-15
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Expires: 1992-07-12
Abstract
Abstract An encapsulated high-voltage conductor structure in which the conductor is supported centrally within a grounded tubular casing by means of insulators, the casing being filled with a pressurized insulating gas and being divided in sections which are coupled together in essentially end-to-end relation by means of coupling joints which provide compensation for temperatureinduced expansion and contraction of the casing sections. Each coupling joint is provided by a housing including oppositely extending coupling sleeves into which the ends of adjoining casing sections are inserted for sliding, guiding movement as the sections expand or contract, there being interposed in an annular gap provided between the end of each casing section and the associated coupling sleeve a sealing means in the form of a flexible tube turned back upon itself which accommodates the relative longitudinal displacement between the casing section and its coupling sleeve.
Inventors
- 👤 D Floessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
H; H01; H01R; H01R35/00; H01R35/02; H02; H02G; H02G15/00; H02G15/20; H02G15/26; H02G5/00; H02G5/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
In an encapsulated high-voltage conductor structure in which the conductor is supported centrally within a grounded tubular casing by means of insulators, said casing being filled with a pressurized insulating gas and being divided longitudinally into rectilinear sections coupled together in essentially end-to-end relation by means of coupling joints which provide compensation for temperature-induced expansion and contraction of the casing, the improvement wherein each coupling joint is constituted by a housing including oppositely extending coupling sleeves into which the end portions of adjoining casing sections are inserted for a sliding guided movement as the sections expand or contract, there being interposed in an annular gap provided between the end portion of each casing section and the associated coupling sleeve a sealing means in the form of a flexible tube turned back upon itself to develop outer and inner portions and which are secured at one end respectively to said coupling sleeve and to the end portion of said casing section thereby to accommodate relative longitudinal displacement between the casing sections and coupling sleeves.
Claim 2
Dependent Claim
173 words
In an encapsulated high-voltage conductor structure in which the conductor is supported centrally within a grounded tubular casing by means of insulators, said casing being filled with a pressurized insulating gas and being divided longitudinally into rectilinear sections coupled together in essentially end-to-end relation by means of coupling joints which provide compensation for temperature-induced expansion and contraction of the casing, the improvement wherein each coupling joint is constituted by a housing including oppositely extending coupling sleeves into which the end portions of adjoining casing sections are inserted for a sliding guided movement as the sections expand or contract, there being interposed in an annular gap provided between the end portion of each casing section and the associated coupling sleeve a sealing means in the form of a flexible tube turned back upon itself to develop outer and inner portions and which are secured at one end respectively to said coupling sleeve and to the end portion of said casing section thereby to accommodate relative longitudinal displacement between the casing sections and coupling sleeves.
Claim 3
Dependent Claim
36 words
An encapsulated high-voltage conductor structure as defined in claim 1 wherein each coupling joint includes means limiting the extent of the relative longitudinal displacement between said coupling sleeves and the end portions of said casing sections.
Claim 4
Dependent Claim
90 words
An encapsulated high-voltage conductor structure as defined in claim 2 wherein said means limiting the extent of the relative longitudinal displacement between each coupling sleeve and the end portion of the associated casing section is constituted by a spacer rod arranged parallel therewith and which extends through an opening provided in a lateral extension on said casing section, one end of said spacer rod being secured to said coupling sleeve and the other end of said spacer rod terminating in an abutment for said lateral extension on said casing section.
Claim 5
Dependent Claim
110 words
An encapsulated high-voltage conductor structure as defined in claim 1 wherein each said coupling sleeve is provided with an outwardly turned flange at one end secured to said housing and an inturned flange at the opposite end establishing a slidable contact with the outer surface of said end portion of said casing section, the outer portion of said flexible sealing tube being clamped at the end opposite the turned-back end between said outwardly turned flange and said housing, and the inner portion of said flexible sealing tube being clamped at the end opposite the turned-back end between the end face of said casing section and a clamping ring secured thereto.
Claim 6
Dependent Claim
44 words
An encapsulated high-voltage conductor structure as defined in claim 4 wherein said clamping ring also functions to clamp a circular insulator in place on said end portion of said casing section, said circular insulator including a central bore through which said high-voltage conductor passes.
Claim 7
Dependent Claim
75 words
An encapsulated high-voltage conductor structure as defined in claim 1 wherein said conductor is also divided longitudinally into rectilinear sections coupled together in essentially end-to-end relation by means of coupling joints wHich provide compensation for temperature-induced expansion and contraction of said conductor, said compensating coupling joints for the sections of said conductor being located within said housing and being operable independently of the operation of the said temperature compensating coupling joints for said casing sections.
Claim 8
Dependent Claim
55 words
An encapsulated high-voltage conductor structure as defined in claim 6 and wherein said coupling joints for the ends of adjoining conductor sections include telescoping sleeve portions thereon and a flexible band connection located within said telescoped sleeve portions, the opposite ends of said band being secured respectively to the ends of said adjoining conductor sections.
Claim 9
Dependent Claim
80 words
An encapsulated high-voltage conductor structure as defined in claim 1 and which further includes a sleeve located within said housing and which is actuatable from the exterior of said housing into the annular space between said outer and inner portions of said flexible sealing tube in the direction of the turned-back end thereof so as to engage and support the latter to prevent any inversion of said tube during evacuation of said casing preparatory to filling with the insulating gas.
Claim 10
Dependent Claim
44 words
An encapsulated high-voltage conductor structure as defined in claim 8 wherein said tube supporting sleeve includes a lateral projection to which is secured an actuating bolt extending through a bore in the wall of said housing with a close sliding fit to the exterior.
Claim 11
Dependent Claim
40 words
An encapsulated high-voltage conductor structure as defined in claim 9 wherein the exterior end of said bolt is threaded to receive an actuating nut and which is covered by a cap to seal the bore against escapage of insulating gas.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |