ACTIVE MEASUREMENT OF GAS FLOW VELOCITY OR SIMULTANEOUS MEASUREMENT OF VELOCITY AND TEMPERATURE, INCLUDING IN GAS TURBINE COMBUSTORS

摘要

Active acoustic velocity, pyrometry-based gas flow velocity, and temperature measurement, such as for monitoring of gas turbine combustors, including industrial gas turbine (IGT) combustors is incorporated into a combustion monitoring and control system by the addition of an acoustic transmitter or an acoustic transceiver which transmits a sound wave in a line-of-sight with a plurality of acoustic sensors, such as dynamic pressure sensors. For velocity measurement, sound transmission propagation time which is directed generally along a gas flow path is measured by a controller and correlated with gas flow velocity along the line-of-sight. Similarly, sound transmission propagation time is correlated with temperature along the line-of-sight. Path(s) of acoustic transmission serve as velocity or velocity/absolute temperature measurement. In an integrated thermoacoustic pressure-based sensor and monitoring/control system embodiment, the controller correlates velocity and, if desired, absolute active path temperatures with acoustic transmission and propagation time analysis techniques.