Anticipatory boiler feedpump suction head controller system

Details Anticipatory boiler feedpump suction head controller system Anticipatory boiler feedpump suction head controller system

F - Mech Eng,Light,Heat,Weapons

22

D

122/18

F22D 5/26 (2006.01) F01K 23/10 (2006.01)

Patent

CA 1240575

19 ABSTRACT OF THE DISCLOSURE Boiler feedpump net positive suction head (NPSH) control is performed in a heat recovery steam generator including a deaerator inserted between steam turbine condensate and steam boiler. To this effect apparatus is provided responsive to temperature at the output of the deaerator, to fluid flow therefrom, and to temperature at the input of the boiler feedpump for providing a signal representative of the anticipated suction head pressure, and the NPSH margin is derived by comparison with actual pressure to control the pegging valve, or other heat source control to the deaerator.

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