DEVICE AND METHOD FOR SLOW TURNING OF AN AERODERIVATIVE GAS TURBINE
First Claim
Patent Images
1. An aeroderivative gas turbine comprising:
- a gas generator;
a gas generator rotor;
a power turbine section; and
a slow turning device,wherein the slow turning device is configured to keep the gas generator rotor in rotary motion after the aeroderivative gas turbine is shutdown.
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Accused Products
Abstract
An aeroderivative gas turbine, including a gas generator, a gas generator rotor, a power turbine section, and a slow turning device, wherein said slow turning device is designed and arranged to keep said rotor in rotary motion after turbine shut-down.
72 Citations
29 Claims
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1. An aeroderivative gas turbine comprising:
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a gas generator; a gas generator rotor; a power turbine section; and a slow turning device, wherein the slow turning device is configured to keep the gas generator rotor in rotary motion after the aeroderivative gas turbine is shutdown. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A slow turning device for turning a gas generator rotor of an aeroderivative gas turbine after shut down of the aeroderivative gas turbine, the slow turning device comprising:
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an electric motor; a gearbox; and an movable shaft torsionally constrained to a slow-speed output member of the gearbox, wherein the movable shaft is selectively movable between an operative position and an inoperative position. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for limiting or preventing locking of a gas generator rotor in an aeroderivative gas turbine upon shut down, the aeroderivative gas turbine including a gas generator with the gas generator rotor and a power turbine, the method comprising:
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at shut down, mechanically connecting said the gas generator rotor to a slow turning device; and rotating the gas generator rotor at a reduced speed by the slow turning device during cooling off of the gas generator rotor until the aeroderivative gas turbine is re-started or until the gas generator rotor has achieved a selected temperature condition. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification