Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1998-04-17
1999-12-21
Nguyen, Hoang
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60670, F01K 734
Patent
active
060033177
ABSTRACT:
A method of generating steam for a steam turbine includes extracting a first partial flow of saturated steam from a steam drum. The first partial flow of saturated steam is throttled and then superheated by heat exchange with a second partial flow of the saturated steam. A steam power plant includes a steam turbine having a water/steam cycle in which a steam drum is connected. A separate sealing-steam line leads from said steam drum to said steam turbine. A heat exchanger in said sealing-steam line has a primary side and a secondary side. The primary side is connected to said steam drum and a throttle member is connected between said secondary side and said steam drum. A method of starting a steam turbine of a steam power plant usees the sealing steam. The steam surbine is put at an especially low risk of corrosion even during restarting after shutdown.
REFERENCES:
patent: 4474010 (1984-10-01), Shibuya et al.
patent: 4873829 (1989-10-01), Williamson
patent: 5095706 (1992-03-01), Saito et al.
patent: 5412936 (1995-05-01), Lee et al.
Greenberg Laurence A.
Lerner Herbert L.
Nguyen Hoang
Siemens Aktiengesellschaft
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