US4013908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for a superconductive exciter winding
Assignee: Kraftwerk Union AG
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Filing: 1975-06-02
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Granted: 1977-03-22
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Expires: 1995-06-02
Abstract
Abstract Cooling system for a superconductive exciter winding in a turbogenerator rotor, the exciter winding having winding coils formed of a multiplicity of individual windings that are received in slots formed at the outer periphery of a solid support cylinder and retained therein by a bracing cylinder shrink-fitted on the support cylinder, includes coolant distribution channels disposed radially in teeth located between and defining the slot formed in the support cylinder and in filler members located between winding head coils, the coolant distribution channels surrounding the individual windings over the entire length thereof and being connected in peripheral direction on both sides thereof with coolant channels extending substantially parallel to one another in radial direction with the individual winding coils and surrounding the same at the bottom of the slots; and method of production.
Inventors
- 👤 Erich Weghaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/24; H02K55/00; H02K55/02; H02K55/04; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/876; Y10S505/877; Y10S505/878
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
Cooling system for a superconductive exciter winding in a turbogenerator rotor, the exciter winding having winding coils formed of a multiplicity of individual windings that are received in slots formed at the outer periphery of a solid support cylinder and retained therein by a bracing cylinder shrink-fitted on the support cylinder, comprising coolant distribution channels disposed radially in teeth located between and defining the slots formed in the support cylinder and in filler members located between winding head coils, said coolant distribution channels surrounding the individual windings over the entire length thereof and being connected in peripheral direction on both sides thereof with coolant channels extending substantially parallel to one another in radial direction with the individual winding coils and surrounding the same at the bottom of the slots.
Claim 2
Dependent Claim
129 words
Cooling system for a superconductive exciter winding in a turbogenerator rotor, the exciter winding having winding coils formed of a multiplicity of individual windings that are received in slots formed at the outer periphery of a solid support cylinder and retained therein by a bracing cylinder shrink-fitted on the support cylinder, comprising coolant distribution channels disposed radially in teeth located between and defining the slots formed in the support cylinder and in filler members located between winding head coils, said coolant distribution channels surrounding the individual windings over the entire length thereof and being connected in peripheral direction on both sides thereof with coolant channels extending substantially parallel to one another in radial direction with the individual winding coils and surrounding the same at the bottom of the slots.
Claim 3
Dependent Claim
29 words
Cooling system according to claim 1 wherein said coolant distribution channels, along the periphery of said support cylinder, are alternatingly constructed as coolant supply channels and coolant discharge channels.
Claim 4
Dependent Claim
27 words
Cooling system according to claim 1 wherein said coolant channels surrounding said winding coils are formed at the inner side of a U-shaped lining of said slots.
Claim 5
Dependent Claim
57 words
Cooling system according to claim 1 wherein said slots are closed by slot-locking wedges at the periphery of said support cylinder, and wherein said radially extending coolant distribution channels are connected through radial incisions formed at the periphery of said support cylinder and at edges of said slot-locking wedges to said coolant channels surrounding said winding coils.
References Cited (Backward Citations)
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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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |