US3916079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coolant feed for high voltage apparatus
Assignee: Siemens AG
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Filing: 1974-06-05
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Granted: 1975-10-28
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Expires: 1994-06-05
Abstract
Abstract A coolant feed for electrical apparatus having conductors at a high-voltage potential in which the coolant feed line is surrounded by a vacuum vessel in which is located a radiation shield of electrically insulating material containing a plurality of tubes arranged concentrically to the feed pipe through which a cooling medium flows, the tubes forming at least one outgoing line for the coolant in the direction of the axis of the feed pipe and at least one return line in the opposite direction thereby providing a coolant feed with low internal thermal losses and which is well suited for electrical apparatus having high conductor potentials.
Inventors
- 👤 Hubert Kohler
- 👤 Fritz Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:44
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; H01F6/065; H01B; H01B12/00; H01B12/16; H02; H02G; H02G15/00; H02G15/34; H02K; H02K55/00; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/885
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A coolant feed arrangement for electrical apparatus having conductors which are to be cooled to a low temperature and which are at a high potential comprising: a. a feed pipe made of an electrically insulating material for conducting a first coolant from a coolant source to the electrical apparatus; b. a vacuum vessel made of insulating material, having a cylinder length in the direction of the axis of the feed pipe determined by the dielectric strength of its outer cylinder surface, surrounding said feed pipe concentrically; and c. a radiation shield made of electrically insulating material and including a plurality of concentric tubes through which a second coolant can flow, said radiation shield being arranged concentric to said feed pipe and said vacuum vessel, and having at least one inlet line and one return line for coupling said second coolant into and out of said direction.
Claim 2
Dependent Claim
146 words
A coolant feed arrangement for electrical apparatus having conductors which are to be cooled to a low temperature and which are at a high potential comprising: a. a feed pipe made of an electrically insulating material for conducting a first coolant from a coolant source to the electrical apparatus; b. a vacuum vessel made of insulating material, having a cylinder length in the direction of the axis of the feed pipe determined by the dielectric strength of its outer cylinder surface, surrounding said feed pipe concentrically; and c. a radiation shield made of electrically insulating material and including a plurality of concentric tubes through which a second coolant can flow, said radiation shield being arranged concentric to said feed pipe and said vacuum vessel, and having at least one inlet line and one return line for coupling said second coolant into and out of said direction.
Claim 3
Dependent Claim
28 words
A coolant feed according to claim 1 and further including a first coolant and means to supply said first coolant and wherein said first coolant supplied is helium.
Claim 4
Dependent Claim
43 words
A coolant feed according to claim 1 and further including a second coolant and means supplying said second coolant and wherein said second coolant for said radiation shield is a cryogenic medium having a temperature higher than the temperature of said first coolant.
Claim 5
Dependent Claim
29 words
A coolant feed according to claim 1 wherein said feed pipe, radiation shield and vacuum vessel are made of one of the group consisting of glass, quartz and ceramics.
Claim 6
Dependent Claim
35 words
A coolant feed according to claim 1 wherein the material of which said feed pipe, radiation shield and vacuum vessel are made, is a plastic material which gives off little gas in a high vacuum.
Claim 7
Dependent Claim
90 words
A coolant feed according to claim 1 wherein said radiation shield has a high voltage side and a side at ground potential and wherein said radiation shield comprises a. an inner tube; b. a middle tube; and c. an outer tube to thereby form inner and outer flow passages between said tubes with the inner flow passage connected to said inlet line, the outer flow passage connected to said outlet line and said inner and outer passage connected with each other at the high voltage side of said radiation shield.
Claim 8
Dependent Claim
12 words
A coolant feed according to claim 6 wherein helium is the coolant.
Claim 9
Dependent Claim
31 words
A coolant feed according to claim 7 wherein the second cooling medium for said radiation shieLd is a cryogenic medium having a temperature higher than the temperature of said first coolant.
Claim 10
Dependent Claim
29 words
A coolant feed according to claim 8 wherein said feed pipe, radiation shield and vacuum vessel are made of one of the group consisting of glass, quartz and ceramics.
Claim 11
Dependent Claim
22 words
A coolant feed according to claim 8 wherein said feed pipe, radiation shield and vacuum vessel are made of molybdenum lead glass.
References Cited (Backward Citations)
US3162716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |