Gas Turbine Combustion Chamber

D

Thread Starter

Dhinesh

Dear Sir,

Please anyone share their experience with Gas Turbine combustion chamber dynamics tuning and the parameter which can affect the combustion chamber Differential pressure.

As we are fronting a problem with the Gas turbine (SGT5 4000f) that when it runs in combined cycle mode at low load (about 20-40MW) the combustion chamber DP fluctuate higher also the compressor discharge pressure changing eventually the flue gas entry pressure to HRSG too fluctuating (Variation is about 0.5~0.8Bar) consequently the entire HRSG duct casing and the main steam pipeline are highly vibrating (Seems like resonance of the structure).

Share your experience and give ideas to resolve this issue.

Thank you.
 
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