Gas turbine overtemperature protection

Details Gas turbine overtemperature protection Gas turbine overtemperature protection

1989-06-16

1990-03-27

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39281, F02C 928

Patent

active

049109561

ABSTRACT:
Turbine gas temperature, which escalates during a compressor stall, is monitored 46, and compared to a set point temperature 52. If the set point temperature is exceeded, valve 36 is pulsed discharging fuel from line 24 and reducing flow to the combustor. Open and closed intervals are selected to reduce flow, but to avoid flameout. An additional second valve 42 operates in a similar mode in response to an even higher gas temperature.
Engine operation continues in this temperature protection mode until the stall is corrected by whatever means.

REFERENCES:
patent: 3002349 (1961-10-01), Arnett et al.
patent: 3006144 (1961-10-01), Arnett et al.
patent: 3053047 (1962-09-01), Bodemuller
patent: 3688495 (1972-09-01), Fehler et al.
patent: 4454713 (1984-06-01), Meyer et al.

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