M
HI all
After a HGPI (GE 6581 dual DLN 1.0 CL extender) and during the fuel tests at FSNL there is a difference in pressure between the combustors as follow:
All the combustors have a 13 bars except for combustor 4: 11 bars, combustor 7: 12 bars and combustors 9: 12 bars .
We checked the fuel circuit, no leaks detected between the flow divider and the fuel nozzle.
Suspected of being in default, we changed the check valve air 7, A large quantity of fuel was found upstream and downstream of the check valve! also We have interchanged between the fuel nozzle of the combustors 7 and 9.
The TG was started with a setpoint of 5 mw of load, the pressure of the combustors was 16 bars except for combustor 4: 12 bars , combustor 7: 13 bars and combustors 9: 13 bars .
Please someone can tell me the cause of the pressure difference readed in the flow divider and what can i do to fix it?
Sincerely
After a HGPI (GE 6581 dual DLN 1.0 CL extender) and during the fuel tests at FSNL there is a difference in pressure between the combustors as follow:
All the combustors have a 13 bars except for combustor 4: 11 bars, combustor 7: 12 bars and combustors 9: 12 bars .
We checked the fuel circuit, no leaks detected between the flow divider and the fuel nozzle.
Suspected of being in default, we changed the check valve air 7, A large quantity of fuel was found upstream and downstream of the check valve! also We have interchanged between the fuel nozzle of the combustors 7 and 9.
The TG was started with a setpoint of 5 mw of load, the pressure of the combustors was 16 bars except for combustor 4: 12 bars , combustor 7: 13 bars and combustors 9: 13 bars .
Please someone can tell me the cause of the pressure difference readed in the flow divider and what can i do to fix it?
Sincerely