US3609057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine coolant flow system
Assignee: RTX Corp
•
Filing: 1970-06-15
•
Granted: 1971-09-28
•
Expires: 1990-06-15
Abstract
Abstract A two-stage turbine is disclosed having a vane upstream of a first stage turbine and a vane between the two turbine stages. A hot gas flows into the turbine from a hot gas generator and it exhausts from an exit end. Sealing means are provided between the rotating turbines and the fixed structure forming the inner side of the annular hot gas flow passage through the turbine. A chamber is formed adjacent the sealing means at the inlet to the first stage turbine. A coolant is directed to said chamber with the pressure regulated so that in operation fluid will flow inwardly through the sealing means from the hot gas flow passage to said chamber. The fluid mixture from the chamber passes to the rear side of the turbine disk where the pressure is now greater than the pressure in the hot gas flow passage so that at the sealing means at the rear side of the first stage turbine the coolant flows into said passage. In the second stage turbine, the pressures of the coolant and hot gases are such that the coolant flows outwardly into the hot gas flow passage. A dome-shaped manifold receives coolant from a supply and directs it through passageways to the chamber. The sizing of the sealing means at various locations controls the amount of leakage flow. The invention herein described was made in the course of or under a contract with the Department of the Air Force.
Inventors
- 👤 Leland J Radtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:07
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/081; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A turbine construction having in combination, a housing, a turbine rotor mounted therein for rotation, and annular passageway having inner and outer walls, said turbine rotor having blades thereon which project into said passageway, said turbine rotor having platform means which forms a rotating portion of said inner wall, an annular space being formed between said rotating portion and the adjacent portion of the inner wall, a chamber being formed in said housing, said chamber being connected to said annular passageway for receiving fluid from said passageway, a coolant supply means connected to said chamber for directing a coolant from said supply to said chamber, said chamber having an outlet for directing the mixed fluid formed in said chamber outwardly therefrom.
Claim 2
Dependent Claim
121 words
A turbine construction having in combination, a housing, a turbine rotor mounted therein for rotation, and annular passageway having inner and outer walls, said turbine rotor having blades thereon which project into said passageway, said turbine rotor having platform means which forms a rotating portion of said inner wall, an annular space being formed between said rotating portion and the adjacent portion of the inner wall, a chamber being formed in said housing, said chamber being connected to said annular passageway for receiving fluid from said passageway, a coolant supply means connected to said chamber for directing a coolant from said supply to said chamber, said chamber having an outlet for directing the mixed fluid formed in said chamber outwardly therefrom.
Claim 3
Dependent Claim
62 words
A turbine construction as set forth in claim 1 wherein said chamber has an annular opening into which said platform means projects, a first and second annular opening being formed between the platform means and the edges of the opening in the chamber, one opening providing the connection to the annular passageway while the other opening provides the outlet from said chamber.
Claim 4
Dependent Claim
85 words
A turbine construction as set forth in claim 1 wherein said chamber is connected to said inner wall and includes as two sides thereof an inner and outer flange projecting towards said turbine rotor, said outer flange projecting over said platform means and said inner flange projecting under said platform means, the opening formed between the outer flange and the platform providing the connection to the annular passageway and the opening formed between the inner flange and the platform providing the outlet from said chamber.
Claim 5
Dependent Claim
69 words
A turbine construction as set forth in claim 1 wherein one wall of said chamber is formed by an annular flange projecting into said annular space to a point adjacent the inner platform means, said flange forming an annular outlet passageway with the cooperating side of said turbine rotor, said flange also forming a passageway with said wall to form a passageway for admitting the coolant to said chamber.
Claim 6
Dependent Claim
39 words
A turbine construction as set forth in claim 1 wherein a second turbine rotor is mounted therein for rotation, said rotors being connected together, said mixed fluid being directed from said chamber to said turbine rotors for cooling them.
Claim 7
Dependent Claim
56 words
A turbine construction as set forth in claim 1 wherein a second annular space is formed between said rotating portion and the other adjacent portion of the inner wall, passage means through said turbine rotor for directing mixed fluid from said outlet to saiD second annular space, said mixed fluid being directed into said annular passageway.
Claim 8
Dependent Claim
23 words
A turbine construction as set forth in claim 1 wherein the mixed fluid is directed on to said turbine rotor for cooling it.
Claim 9
Dependent Claim
127 words
A turbine construction having in combination, a housing, a turbine rotor mounted in a cavity in said housing for rotation, said turbine rotor having blades, said housing having an inlet communicating with said blades, and an outlet for receiving the discharge from said blades, said turbine rotor having a platform mounted thereon, said housing defining a chamber having an opening therein, said platform extending into said opening and defining therewith a first opening and a second opening, a source of coolant, means for connecting said source to said chamber for directing a coolant thereto, said first opening bleeding a portion of the gases from said inlet into said chamber for mixing with said coolant, said second opening providing a discharge for said fluid mixture from said chamber.
Claim 10
Dependent Claim
127 words
A turbine construction having in combination, a housing, a turbine rotor mounted in a cavity in said housing for rotation, said turbine rotor having blades, said housing having an inlet communicating with said blades, and an outlet for receiving the discharge from said blades, said turbine rotor having a platform mounted thereon, said housing defining a chamber having an opening therein, said platform extending into said opening and defining therewith a first opening and a second opening, a source of coolant, means for connecting said source to said chamber for directing a coolant thereto, said first opening bleeding a portion of the gases from said inlet into said chamber for mixing with said coolant, said second opening providing a discharge for said fluid mixture from said chamber.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |