Dear byrdj and JJPellin,
Thanks for your responses.
Here are the drawing screenshots of servo assembly. Following is the arrangement:
EG-10P Actuator > Relay Pilot Valve > Relay Piston > Amplifier Pilot Valve > Amplifier Piston > Steam Control Lift
The process is being controlled by DCS and...
Dear JJPelin,
Your point is valid but the turbine is running at almost full load. It is driving an ambient air centrifugal compressor. Current magnitude of speeed variation ~ 10 - 15 RPM is affordable but the very frequent motion of the complete linkage assemblies is a threat of rapid wear of...
Dear byrdj,
Thanks for your post. There is no issue with the demand which is actually the speed of turbine measured by three speed probes.
I am also interested about adjusting gains but that is the domain of our instrumentation team who are not taking risk as the turbine can trip and the whole...
We are facing problem of severe jiggling on steam inlet control valves’ servomotor assembly of a process critical steam turbine of make M/s Delaval (Now Siemens). These valves are operated by a woodward EG10-P actuator as per governor inputs.
All the pilot valves and pistons of the...
