APPARATUS FOR MONITORING OF COMBUSTION INSTABILITY

摘要

PURPOSE: A combustion instability monitoring device is provided to correctly sense the combustion instability generated in an operation and to prevent the malfunction of the equipment due to the combustion instability. CONSTITUTION: A combustion instability monitoring device(200) comprises a probe(210), a noise filter(220), a first amplification unit(230), an ultraviolet filtering unit(240), a second amplification unit(250), and a combustion state analyzing unit(270). The probe is installed to a combustor inside a gas turbine and simultaneously detects the combustion heat release rate by irradiation sensing according to the combustion flame and combustion pressure. The noise filter removes the noise to a combustion pressure signal which is outputted from the probe. The combustion state analyzing unit analyzes the combustion pressure and the combustion heat release rate using a first detection signal and a second detection signal and detects the combustion state of the combustor. [Reference numerals] (220) Noise filter; (230) First amplification unit; (240) Ultraviolet filtering unit; (241) Ultraviolet lens; (243) Ultraviolet filter; (250) Second amplification unit; (260) Converter unit; (270) Combustion state analyzing unit