US3867065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic insulator for a gas turbine blade structure
Assignee: Westinghouse Electric Corp
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Filing: 1973-07-16
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Granted: 1975-02-18
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Expires: 1993-07-16
Abstract
Abstract A stationary ceramic three-piece blade structure for gas turbines has an annularly shaped ceramic insulator disposed on its outer periphery. An annularly shaped ceramic insulator is disposed on the inner side of the inner periphery of the blade structure. The ceramic insulators maintain required heat patterns within the three-piece ceramic blade members. The ceramic insulators also prevent heat and thermal gradients from damaging the three piece stationary blade structure and the metal members which surround and support the stationary blade structure in the turbine.
Inventors
- 👤 Richard J Schaller
- 👤 Thomas J Rahaim
- 👤 Jr Claude R Booher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:17
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F01D5/00; F01D5/12; F01D5/28; F01D5/284; F05; F05D; F05D2240/00; F05D2240/10; F05D2300/00; F05D2300/20; F05D2300/21
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
174 words
A hot elastic fluid stator blade construction for a gas turbine, comprising a plurality of radially directed stationary ceramic blades disposed across an annularly shaped hot fluid flow path, each of said stationary ceramic blades being supported on their radially inner ends by a ceramic inner end cap, each of said stationary ceramic blades being supported on their radially outer ends by a ceramic outer end cap, said ceramic outer end caps defining a portion of the radially outer surface of said annularly shaped hot fluid flow path, said inner ceramic end caps defining a portion of the radially inner surface of said annularly shaped hot fluid flow path, and an arcuately shaped ceramic insulator disposed on the radially outer side of said outer ceramic end caps, and an arcuately shaped ceramic insulator disposed on the radially inner side of the inner ceramic end caps, said ceramic insulators preventing damage to said end caps from thermal distortion caused by uneven temperature distribution therein, said ceramic insulators having a woven fibrous ceramic material disposed therein.
Claim 2
Dependent Claim
174 words
A hot elastic fluid stator blade construction for a gas turbine, comprising a plurality of radially directed stationary ceramic blades disposed across an annularly shaped hot fluid flow path, each of said stationary ceramic blades being supported on their radially inner ends by a ceramic inner end cap, each of said stationary ceramic blades being supported on their radially outer ends by a ceramic outer end cap, said ceramic outer end caps defining a portion of the radially outer surface of said annularly shaped hot fluid flow path, said inner ceramic end caps defining a portion of the radially inner surface of said annularly shaped hot fluid flow path, and an arcuately shaped ceramic insulator disposed on the radially outer side of said outer ceramic end caps, and an arcuately shaped ceramic insulator disposed on the radially inner side of the inner ceramic end caps, said ceramic insulators preventing damage to said end caps from thermal distortion caused by uneven temperature distribution therein, said ceramic insulators having a woven fibrous ceramic material disposed therein.
Claim 3
Dependent Claim
47 words
A hot elastic fluid stator blade construction as recited in claim 1, wherein said woven fibrous ceramic material has a directed orientation within said ceramic insulators to reduce thermal conductivity through the ceramic insulators in the radial direction, and to add structural strength to the ceramic insulators.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |