Power plants – Motive fluid energized by externally applied heat – Having apparatus cleaning – sealing – lubricating – purging,...
Patent
1996-12-16
1999-01-12
Nguyen, Hoang
Power plants
Motive fluid energized by externally applied heat
Having apparatus cleaning, sealing, lubricating, purging,...
606412, 415112, 415230, F01B 3100
Patent
active
058573380
ABSTRACT:
A seal system for a geothermal power plant of the type having a steam turbine operating on high pressure steam produced from geothermal fluid includes a high pressure seal housing associated with the high pressure stage of the turbine. The housing has a first internal chamber for receiving geothermal steam that leaks from the high pressure stage, and a further internal chamber for receiving geothermal steam leaking from the first internal chamber. A condenser/vaporizer is provided for condensing steam from the further internal chamber using an organic fluid and producing condensate that can be disposed of in a re-injection well. Leakage of high pressure geothermal steam through the seal is suppressed because most of the leakage with be shunted to the condenser/vaporizer, which preferably is associated with a module that includes a steam turbine and an organic turbine coupled to a generator.
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Nguyen Hoang
Ormat Industries Ltd.
Sandler Donald M.
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