METHODS OF SI BASED CERAMIC COMPONENTS VOLATILIZATION CONTROL IN A GAS TURBINE ENGINE
First Claim
1. A method of controlling volatilization of silicon based components in a gas turbine engine, the method comprising:
- measuring, estimating and/or predicting a variable related to operation of the gas turbine engine;
correlating the variable to determine an effective amount of silicon to control volatilization of the silicon based components in the gas turbine engine;
comparing the effective amount of silicon to a maximum amount of silicon; and
injecting the lesser of the effective amount of silicon and the maximum amount of silicon into the gas turbine engine to control volatilization of the silicon based components.
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Abstract
A method of controlling volatilization of silicon based components in a gas turbine engine includes measuring, estimating and/or predicting a variable related to operation of the gas turbine engine; correlating the variable to determine an amount of silicon to control volatilization of the silicon based components in the gas turbine engine; and injecting silicon into the gas turbine engine to control volatilization of the silicon based components. A gas turbine with a compressor, combustion system, turbine section and silicon injection system may be controlled by a controller that implements the control method.
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Citations
20 Claims
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1. A method of controlling volatilization of silicon based components in a gas turbine engine, the method comprising:
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measuring, estimating and/or predicting a variable related to operation of the gas turbine engine; correlating the variable to determine an effective amount of silicon to control volatilization of the silicon based components in the gas turbine engine; comparing the effective amount of silicon to a maximum amount of silicon; and injecting the lesser of the effective amount of silicon and the maximum amount of silicon into the gas turbine engine to control volatilization of the silicon based components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of controlling volatilization of silicon based components in a gas turbine engine, the method comprising:
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measuring temperature of turbine exhaust gas, fuel flow, water content of the turbine exhaust gas, and a component temperature of the gas turbine engine; correlating each of the temperature of the turbine exhaust gas, the fuel flow, the water content and the component temperature to determine an effective amount of silicon to control volatilization of the silicon based components in the gas turbine engine; and injecting the effective amount of silicon into the gas turbine engine to control volatilization of the silicon based components.
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20. A gas turbine engine system comprising:
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a compressor; a combustion system; a turbine section; an injector adapted to inject silicon into the combustion system; and a controller, wherein the controller includes programming for; measuring, estimating and/or predicting a variable related to operation of the gas turbine engine; correlating the variable to determine an effective amount of silicon to control volatilization of silicon based components in the gas turbine engine; comparing the effective amount of silicon to a maximum amount of silicon; and injecting the lesser of the effective amount of silicon and the maximum amount of silicon into the gas turbine engine to control volatilization of the silicon based components.
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Specification