US3689174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial flow turbine structure
Assignee: Westinghouse Electric Corp
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Filing: 1971-01-11
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Granted: 1972-09-05
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Expires: 1991-01-11
Abstract
Abstract In the manufacturing of stator vanes for the first stage of a multi-stage axial flow gas turbine, casting difficulty and casting cost are reduced by making a separate casting for each vane instead of making segmental groups of vanes which are costly due to a high casting rejection rate. The vanes are supported by grooved holding blocks attached to the blade ring of the turbine, and they are readily assembled or removed. An improved cooling system is provided for the vanes which are of a hollow construction.
Inventors
- 👤 Thomas J Rahaim
- 👤 George M Mierley Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:47
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D9/00; F01D9/02; F01D9/04; F01D9/042; F05; F05D; F05D2240/00; F05D2240/10; Y; Y10; Y10S; Y10S415/00; Y10S415/915
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
In an axial flow hot elastic fluid turbine, in combination, a stator blade ring, an annular array of holding blocks attached to said blade ring, an annular array of separate stator vane structures for directing hot motive fluid, in an axial direction, said blocks being interposed between said vane structures and said blade ring, said blocks having axially extending grooves, said vane structures being slidably supported in said grooves, means for restraining movement of said vane structures in said axial direction, and means for permitting slidable disengagement of said vane structures from said blocks by movement in a direction opposite to said axial direction.
Claim 2
Dependent Claim
104 words
In an axial flow hot elastic fluid turbine, in combination, a stator blade ring, an annular array of holding blocks attached to said blade ring, an annular array of separate stator vane structures for directing hot motive fluid, in an axial direction, said blocks being interposed between said vane structures and said blade ring, said blocks having axially extending grooves, said vane structures being slidably supported in said grooves, means for restraining movement of said vane structures in said axial direction, and means for permitting slidable disengagement of said vane structures from said blocks by movement in a direction opposite to said axial direction.
Claim 3
Dependent Claim
18 words
The combination defined in claim 1, wherein each vane structure includes holding means slidably disposed in said grooves.
Claim 4
Dependent Claim
28 words
The combination defined in claim 2, wherein the holding means comprises two transversely spaced rows of lugs, each of said rows including a plurality of mutually spaced lugs.
Claim 5
Dependent Claim
20 words
The combination defined in claim 3, wherein the lugs in each row are spaced from each other in axial direction.
Claim 6
Dependent Claim
29 words
The combination defined in claim 1, wherein the vanes are of a hollow construction, and each holding block has an opening therethrough admitting colling air into a single vane.
Claim 7
Dependent Claim
25 words
The combination defined in claim 5, including a cover member secured to each vane structure to provide a separate cooling air chamber for each vane.
Claim 8
Dependent Claim
25 words
The combination defined in claim 3, wherein the holding lugs for each vane structure are disposed in grooves in mating two oppositely adjacent holding blocks.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |