METHOD AND DEVICE FOR MONITORING COMBUSTION CONDITIONS IN GAS-TURBINE POWER UNIT Russian patent published in 2005 - IPC

FIELD: aviation, gas, and power engineering.

SUBSTANCE: proposed method designed for monitoring flame and combustion conditions in gas-turbine power units of gas-transfer stations and aircraft engines includes measurement of signals of inductance voltage induced due to interaction between electricity conduction component of high-temperature gas flow and sensing element of magnetic probe disposed on surface of GPTU housing directly in region adjacent to its combustion chamber, and comparison of measurement results with reference signals measured in GPTU starting, in the course of GPTU tests at fixed power, and in emergency burning conditions within its combustion chamber. Device implementing this method has magnetic probe disposed on surface of GPTU housing and instrumentation connected to GPTU starting and control units provided with three newly introduced magnetic probe selection channels and analyzing unit. Each selection channel has series-connected spectral selection subunit, comparison circuit, and reference signal shaping subunit. Spectral selection subunits are connected through their inputs to outputs of comparison circuits whose second inputs are connected to outputs of respective reference signal shaping subunits. Outputs of comparison circuits are connected through analyzing unit to inputs of instrumentation whose outputs are connected through analysis unit to inputs of reference signal shaping subunits.

EFFECT: enhanced reliability of monitoring gas turbine starting and standard operation conditions, detecting emergency situations, and eliminating them, if required.

5 cl, 1 dwg