Claims
- 1. A gas turbine alternately useable as an auxiliary power unit, load compressor, air turbine starter or the like, said turbine comprising:
- a centrifugal compressor mounted for rotation;
- a turbine wheel mounted for rotation;
- a clutch interconnecting said compressor and said turbine wheel and selectively operable to couple or decouple said compressor and said turbine wheel;
- an inlet to said compressor;
- variable inlet guide vanes in said inlet and movable between positions substantially opening and substantially closing said inlet;
- a compressed air outlet from said compressor;
- a gas inlet to said turbine wheel;
- a combustor interconnecting said gas inlet and said turbine wheel;
- ducting interconnecting said compressed air outlet and said combustor including a butterfly valve disc movable between a first position halting flow from said compressed air outlet to said gas inlet and a second position allowing flow from said compressed air outlet to said gas inlet;
- a first port in said ducting between said compressed air outlet and said valve disc and openable to direct compressed air to a point of use;
- a second port in said ducting between said valve disc and said gas inlet and openable to admit pressurized air from an external source.
- 2. The gas turbine of claim 1 further including a rotary machine adapted to be coupled to one of said compressor and said turbine wheel.
- 3. The gas turbine of claim 1 further including a compressed air consuming load coupled to said first port, and a selectively operable valve disposed between said load and said first port.
- 4. The gas turbine of claim 1 further including an external pressure source connected to said second port and a selectively operable valve disposed between said source and said second port.
- 5. The gas turbine of claim 1 further including a rotary load having a rotary input adapted to be coupled to one of said compressor and said turbine wheel;
- a compressed air consuming load coupled to said first port, and a first selectively operable valve disposed between said air consuming load and said first port; and
- an external pressure source connected to said second port, and a selectively operable second valve disposed between said source and said second port.
Parent Case Info
This is a division of application Ser. No. 271,516 filed Nov. 14, 1988 which is a division of prior appln. Ser. No. 092,408 filed Sept. 2, 1987 (abandoned).
US Referenced Citations (5)
Divisions (2)
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Number |
Date |
Country |
Parent |
271516 |
Nov 1988 |
|
Parent |
92408 |
Sep 1987 |
|