Gas turbine flame detection system with reflected flame radiatio

Details Gas turbine flame detection system with reflected flame radiatio Gas turbine flame detection system with reflected flame radiatio

1990-03-23

1992-06-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Flame light source

250237R, 340578, G01J 3114

Patent

active

051209756

ABSTRACT:
A directionally-sensitive flame detection apparatus and method for determining the presence of flame in a combustion chamber zone of a gas turbine. A radiation detector is coupled to the monitored combustion zone by a radiation collimator having mechanically-lowered internal reflectance so as to enhance the effective collimation angle. In this manner, a narrowed detector view angle is provided that is substantially independent of radiation wavelength or the material properties of the collimator tube.

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patent: 4317045 (1982-02-01), Coe et al.
patent: 4328488 (1982-05-01), Yanai et al.
patent: 4542963 (1985-09-01), Linlor
patent: 4774404 (1988-09-01), Hasegawa et al.
patent: 4855718 (1989-08-01), Cholin et al.

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