Power plants – Motive fluid energized by externally applied heat – Power system involving change of state
Patent
1998-07-30
2000-08-29
Nguyen, Hoang
Power plants
Motive fluid energized by externally applied heat
Power system involving change of state
60679, F01K 1300
Patent
active
061090379
ABSTRACT:
A feed water heating system for heating a feed water for a power-generating plant having a steam turbine, a condenser and a steam generator, comprises: a steam injector unit for receiving a plurality of bled steams having different pressures extracted from the steam turbine and an effluent water discharged from the condenser to mix the effluent water with the plurality of bled steams to raise the temperature and pressure of a mixture of the effluent water with the plurality of bled steams to deaerate and discharge the temperature and pressure raised mixture. The steam injector unit comprises: a multistage steam injector having a plurality of steam injectors connected in series for receiving one of the plurality of bled steams and a feed water to mix the one of the plurality of bled steams with the feed water to raise the temperature and pressure of a mixture of the one of the plurality of bled steams and the feed water to discharge the temperature and pressure raised mixture; a cylindrical container for housing therein the multistage steam injector; and a jet centrifugal deaerator, provided downstream of the multistage steam injector, for receiving a feed water discharged from the multistage steam injector and the bled steams to apply a centrifugal force to the feed water and the bled steams to deaerate the feed water to spatially separate a deaerated feed water from the bled steams to discharge the deaerated feed water.
REFERENCES:
patent: 3016712 (1962-01-01), Taylor
patent: 3029197 (1962-04-01), Untermyer
Asanuma Yutaka
Kumagai Kenji
Mori Michitsugu
Nakamaru Mikihide
Narabayashi Tadashi
Kabushiki Kaisha Toshiba
Nguyen Hoang
Tokyo Electric Power Co.
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