an unknown event in gas turbine
an unknown event in gas turbine
(OP)
We see that in our turbine which is running at 100 % load suddenly switches to lean-lean mode ( 20-40 % load ). Have any body seen this type of issue, or waht are the sensors that are needed to look into to diagnos this issue.
thanks
thanks





RE: an unknown event in gas turbine
also... first thing is call the OEM... if you so require they will send a field engineer to troubleshoot the problem...
these load swings are not good for the unit at all and will damage the combustion hardware very fast.
saludos.
a.
RE: an unknown event in gas turbine
RE: an unknown event in gas turbine
RE: an unknown event in gas turbine
RE: an unknown event in gas turbine
If you are using your terms correctly in saying "Lean Lean Mode" You have a GE Unit most likely with a DLN 2.0 or DLN 2.0+ Combustion system.
Lean Lean Mode is a diffusion mode where gas is being directed to the Primary Fuel Nozzle and the Tertiary Premix Fuel Nozzles.The Gas Turbine runs in this mode from approximately 81% speed to the engine reaches TTRF1 (combustion reference temperature) which corresponds to about 40% base load with extended turndown options and 70% base load without extended turn down options.
The unit will experience what is called a "runback" from Premix to Lean Lean if some event ocurrs in the combustion operation. DLN 2 and 2+ should be giving alarms that will acompany these events.
Can you provide details on the alarms present? Would also help to know if you are runing a Mark V or Mark VI Control as they are completely different when troubleshooting.
Romefu12
RE: an unknown event in gas turbine
What is the maximum temperature a gas generator bearing can withstand. I believe that the gas generator bearing is for a Rolls-Royce Avon engine for industrial engine.
CAE MANIAC
RE: an unknown event in gas turbine
You need to start a new thread to post your question. One you start a new thread comeback and red flag this post.
Please do not hijack another's thread.