| 摘要 |
<p>A method of varying turbine output from approximately 85% rated load down to approximately 65% rated output or alternatively from 100% down to approximately 85% where the turbine forms part of a supercritical installation having a steam generator for generating steam to a predetermined amount in excess of critical pressure. The installation includes a feed water pump for maintaining pressures in the steam generator to the predetermined amount in excess of critical pressure, a division valve and a turbine control valve. Output is varied by maintaining the control valve in a fully or partially open position, the division valve in a fully open position and varying the delivery pressure of the feed water pump from the predetermined supercritical pressure to a pressure slightly above critical.</p> |
