Pump Governor and self operated regulators
Pump Governor and self operated regulators
(OP)
Can anyone help me understand the difference between Pump governor and self operated regulator?
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Pump Governor and self operated regulators
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RE: Pump Governor and self operated regulators
However, let's make a few assumptions. Perhaps this is a steam driven pump. A pump governor could be a mechanical device where the centripedal force moves a weight outward with mechanical linkage to reduct the steam flow. Perhaps the self operated regulator is a valve that uses force on the diaphragm. These can be pressure reduction to maintain the downstream pressure or pressure relieving to limit the inlet pressure.
RE: Pump Governor and self operated regulators
So this would be straight proportional control, and for every flowrate there would be a slightly different pressure associated.
Now in the modern world we would put a pressure transmitter on the pump discharge, run the signal thru a PID controller, outputting to an air-operated control valve on the steam line to the turbine. With a properly tuned loop, then the pressure would be dead-nuts on all the time AND your instrument techs would be dealing with familiar equipemnt...it's just a pressure control loop when it's piped up this way.
RE: Pump Governor and self operated regulators