Patent US2930780A successfully refreshed from Google Patents.
Patent US3834831A successfully refreshed from Google Patents.
US3834831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade shank cooling arrangement
Assignee: Westinghouse Electric Corp
•
Filing: 1973-01-23
•
Granted: 1974-09-10
•
Expires: 1993-01-23
Abstract
Abstract In a gas turbine engine, an arrangement for cooling turbine blade shanks for gas turbines, wherein a perforated chamber is arranged to cause a cooling fluid to impinge with a predetermined pattern upon inner wall surfaces of a cavity in a shank portion of a turbine blade and/or the outer walls of adjacent blade shanks. The cooling fluid may escape through radially directed passageways within the turbine blade or through a space between the adjacent blade platforms.
Inventors
- 👤 E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:54
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; F01D11/00; F01D11/005; F01D11/006; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/30; F01D5/3007; F01D5/3015; F05; F05D; F05D2240/00; F05D2240/80; F05D2240/81
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
An elastic motive fluid turbomachine rotor structure comprising; a rotor disc a plurality of blades attached to said disc, said blades having a root portion, an intermediate shank portion, and an air foil portion, at least one perforated generally tubular chamber having its major axis disposed generally parallel to the axis of rotation of said rotor disc and in a spaced relation to said blade shank, means for supplying a coolant fluid under pressure to each of said perforated generally tubular chambers whereby jets of coolant fluid impinge upon predetermined surface portions of said turbomachine rotor structure, means for sealing portions of said rotor disc, and means for discharging said coolant fluid into said turbomachine.
Claim 2
Dependent Claim
115 words
An elastic motive fluid turbomachine rotor structure comprising; a rotor disc a plurality of blades attached to said disc, said blades having a root portion, an intermediate shank portion, and an air foil portion, at least one perforated generally tubular chamber having its major axis disposed generally parallel to the axis of rotation of said rotor disc and in a spaced relation to said blade shank, means for supplying a coolant fluid under pressure to each of said perforated generally tubular chambers whereby jets of coolant fluid impinge upon predetermined surface portions of said turbomachine rotor structure, means for sealing portions of said rotor disc, and means for discharging said coolant fluid into said turbomachine.
Claim 3
Dependent Claim
33 words
An elastic motive fluid turbomachine rotor structure as recited in claim 1, wherein said blade shanks are hollow and said perforated generally tubular chambers are disposed within said hollow portions of said shanks.
Claim 4
Dependent Claim
82 words
An elastic motive fluid turbomachine rotor structure as recited in claim 1, wherein said sealing means comprises an upstream sealing disk disposed on said rotor, a downstream sealing disk disposed on said rotor, said supply means being disposed through said one of said sealing disks to provide a pressurized coolant fluid to said perforated tubular chambers, said coolant fluid impinging with a predetermined pattern upon said surface portions to be cooled which include said blade shank surfaces comprising said hollow shank surfaces.
Claim 5
Dependent Claim
54 words
An elastic fluid turbomachine rotor structure as recited in claim 3, wherein said coolant fluid discharge means comprises at least one passageway extending from said hollow portion of said shank through said air foil portion for the flow of coolant fluid therethrough, after impingement of said coolant fluid upon said hollow blade shank surfaces.
Claim 6
Dependent Claim
34 words
An elastic motor fluid turbomachine rotor structure as recited in claim 3, wherein said shank portion surfaces to be cooled have lugs disposed thereon to restrain radial movement of said perforated generally tubular chambers.
Claim 7
Dependent Claim
36 words
An elastic motor fluid turbomachine rotor structure as recited in claiM 5, wherein each of said perforated generally tubular chambers is disposed beyond the periphery of said disk, between two adjacent shank portions of said blades.
Claim 8
Dependent Claim
55 words
An elastic motor fluid turbomachine rotor structure as recited in claim 6, wherein said perforated generally tubular chambers are disposed within said hollow portions of said shanks and also between at least two of said blades shanks of two adjacent blades, to permit the jetting of cooling fluid upon external and internal blade shank surfaces.
References Cited (Backward Citations)
CA590522A
Cited
GB452412A
Cited
US2141401A
Cited
DE1043718B
Cited
GB872705A
Cited
US3266770A
Cited
US3171631A
Cited
US3325144A
Cited
US3700348A
Cited
US3610769A
Cited
US3715170A
Cited
US3709631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |