Regulation of the temperature of hot gas of a gas turbine

Abstract

The invention relates to a device for regulating the hot flue gas temperature of a gas turbine (1), in particular a stationary gas turbine for power generation, which gas turbine has a gas turbine for injecting a liquid (W) into a gas stream which can be compressed by a compressor. An injection device (9) into the air flow (L) sucked by the machine (3), with the help of which a combustion medium (B) can be burned in a downstream combustion chamber (5) to form hot flue gases (H), the hot flue gas expands and performs work when flowing through the downstream turbine section (7), and the gas turbine has a temperature measuring device for detecting the temperature of the air flow (L) before the compressor (3) ( MTU), wherein the hot flue gas temperature is adjusted by the amount of combustion medium, in order to provide a regulating means to increase the service life of components exposed to hot flue gas during wet compression operation, the invention proposes that the temperature measurement A device (MTU) is arranged before the injection device (9) and uses the measured temperature (TU) to calculate the temperature (TV1) of the air flow (L) at the inlet (12) of the compressor (3) ).

Description

[0001] This application is a divisional application of Chinese Patent Application No. 200480007518.2 with the filing date of March 25, 2004 and the title of the invention is "Temperature Measuring Device and Means for Adjusting Hot Flue Gas Temperature of Gas Turbine". technical field [0002] The invention relates to a regulating means for regulating the temperature of the hot flue gas of a gas turbine, in particular a stationary gas turbine for power generation. Background technique [0003] It is known to use stationary gas turbines to generate mechanical energy, which is usually converted into electrical energy by means of a generator. For this purpose, in a gas turbine, a fossil fuel is combusted together with an air stream compressed by a compressor to form hot flue gas, which is then expanded in a turbine section on the rotor to perform work. Therein, the gas turbine is operated in such a way that sufficient energy is delivered on the rotor shaft for the generation of...

AI Technical Summary

Problems solved by technology

In this case, however, the gas turbine is overfired, i.e. the actual turbine section inlet temperature may be higher than the maximum permissible turbine section inlet temperature

Conversely, if the compressor inlet temperature is measured to be lower than the actual temperature, the combustion in the gas turbine is not sufficient

[0008] Excessive combustion of gas turbines can lead to overheating of components subjected to hot flue gases and thus to a reduction in their life, or also to damage

Conversely, incomplete combustion in a gas turbine results in a loss of power

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