Patent US1981946A successfully refreshed from Google Patents.
US3856983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical penetrant structure
Assignee: Conax Buffalo Corp
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Filing: 1972-06-30
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Granted: 1974-12-24
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Expires: 1992-06-30
Abstract
Abstract An electrical penetrant structure to provide medium voltage power penetration through a wall such as the concrete containment wall of a nuclear powered electrical generating facility and used typically to supply electrical power to electrical motor driven reactor coolant pumps. The electrical penetrant structure includes at least one conductor so mounted as to allow longitudinal and lateral movement thereof relative to its support, such longitudinal movement resulting from a thermal effect in the conductor as occurs during starting up of the pumps when the conductor handles a higher starting current than during normal pump-operating conditions, and such lateral movement being possible from a short circuit which produces high lateral forces between conductors where more than one conductor is included in the structure as is usually the case.
Inventors
- 👤 R Jankowiak
- 👤 R Natell
- 👤 E Fisher
- 👤 W Rautio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; G21C17/116; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
130 words
In an electrical penetrant structure, the combination comprising a wall member having an opening therethrough, a conductor extending through said opening, and means mounting said conductor on said wall member so as to allow longitudinal and lateral movement of said conductor relative to said wall member including a tubular sleeve of rigid electrical insulating material surrounding said conductor and having inner and outer end portions, said inner end portion being arranged adjacent said opening in spaced relation to said wall member to provide an annular space therebetween, first seal means sealingly connected to said wall member and sleeve and closing sAid space and allowing longitudinal and lateral movement of said sleeve relative to said wall member, and second seal means sealingly rigidly connecting said outer end portion to said conductor.
Claim 2
Dependent Claim
130 words
In an electrical penetrant structure, the combination comprising a wall member having an opening therethrough, a conductor extending through said opening, and means mounting said conductor on said wall member so as to allow longitudinal and lateral movement of said conductor relative to said wall member including a tubular sleeve of rigid electrical insulating material surrounding said conductor and having inner and outer end portions, said inner end portion being arranged adjacent said opening in spaced relation to said wall member to provide an annular space therebetween, first seal means sealingly connected to said wall member and sleeve and closing sAid space and allowing longitudinal and lateral movement of said sleeve relative to said wall member, and second seal means sealingly rigidly connecting said outer end portion to said conductor.
Claim 3
Dependent Claim
54 words
An electrical penetrant structure according to claim 1 wherein said first seal means includes a flexible imperforate corrugated tube one end of which is sealingly connected to said wall member and the other end of which is sealingly connected to said sleeve, and said second seal means removably connects said sleeve to said conductor.
Claim 4
Dependent Claim
77 words
An electrical penetrant structure according to claim 2 wherein said opening in said wall member is internally threaded, said first seal means includes a tubular housing surrounding said sleeve and externally threaded and removably screwed into said threaded opening and having an enlarged head, a seal ring between said head and wall member and sealing the threaded joint between said wall member and housing, and said one end of said tube is sealingly connected to said housing.
Claim 5
Dependent Claim
26 words
An electrical penetrant structure according to claim 3 wherein said enlarged head is internally recessed, and said flexible corrugated tube is arranged in such housing recess.
Claim 6
Dependent Claim
66 words
An electrical penetrant structure according to claim 1 wherein said second seal means includes a gland body surrounding said conductor and arranged partially within said sleeve, ferrule means arranged within said gland body and surrounding said conductor, a compression cap connected to said gland body and arranged to compress said ferrule means, and an imperforate ring means sealing the joint between said sleeve and gland body.
Claim 7
Dependent Claim
29 words
An electrical penetrant structure according to claim 5 wherein said gland body is made of metal, said ring means is brazed to said gland body and to said sleeve.
Claim 8
Dependent Claim
100 words
An electrical penetrant structure according to claim 5 wherein said opening in said wall member is internally threaded, said first seal means includes a tubular housing surrounding said sleeve and externally threaded and removably screwed into said threaded opening and having an enlarged head internally recessed, a seal ring between said head and wall member and sealing the threaded joint between said wall member and housing, said first seal means also including a flexible imperforate corrugated tube arranged in such housing recess and having one end sealingly connected to said housing and its other end sealingly connected to said sleeve.
Claim 9
Dependent Claim
78 words
An electrical penetrant structure according to claim 7 wherein there is a second conductor extending through a second opening in said wall member and mounted thereon in the same manner as defined for the first mentioned conductor, that portion of each of said conductors arranged on the inside of said wall member being surrounded in spaced relation by an electrically conductive pipe electrically connected to said, and means mounted on said wall member for grounding said wall member.
Claim 10
Dependent Claim
66 words
An electrical penetrant structure according to claim 1 wherein there is a second conductor extending through a second opening in said wall member and mounted thereon in the same manner as defined for the first mentioned conductor, such conductors severally extending outwardly beyond their respective second seal means, and strap means interconnecting such extended portions of said conductors to restrain relative lateral movement between said conductors.
Claim 11
Dependent Claim
31 words
An electrical penetrant structure according to claim 9 wherein said strap means is made of a conductive material so as to provide a buss strap electrically connecting said conductors in parallel.
Claim 12
Dependent Claim
19 words
An electrical penetrant structure according to claim 9 wherein said strap means is made of an electrical insulating material.
Claim 13
Dependent Claim
77 words
An electrical penetrant structure providing electrical power transmission in the 5 to 10 kilovolt range through the containment wall of a nuclear powered electrical generating facility, comprising a canister extending through said wall and including spaced end heads Having openings therethrough, an uninterrupted solid conductor extending through said openings, and means insulatively and sealingly mounting said conductor on said end heads so as to allow longitudinal and lateral movement of said conductor relative to said end heads.
Claim 14
Dependent Claim
77 words
An electrical penetrant structure providing electrical power transmission in the 5 to 10 kilovolt range through the containment wall of a nuclear powered electrical generating facility, comprising a canister extending through said wall and including spaced end heads Having openings therethrough, an uninterrupted solid conductor extending through said openings, and means insulatively and sealingly mounting said conductor on said end heads so as to allow longitudinal and lateral movement of said conductor relative to said end heads.
Claim 15
Dependent Claim
46 words
An electrical penetrant structure according to claim 12 wherein such mounting means are removably connected to said conductor and also to said end heads thereby to allow replacement of said conductor as well as said means following permanent installation of said canister to said containment wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |