| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress hampering of sealability or reduction of thickness caused by corrosion of a gland part, by reducing a content of a corrosive material such as H<SB>2</SB>S and CO<SB>2</SB>in steam for a gland seal introduced into a gland part having a labyrinth seal of a geothermal turbine. Ž<P>SOLUTION: The geothermal turbine device includes: a geothermal turbine rotary-driven by geothermal steam supplied through a main steam pipe; a shaft of the geothermal steam penetrating a turbine casing; and a shaft seal part in which the labyrinth seal to which steam for seal is supplied is applied to the shaft. As steam for seal, clean steam condensate made by removing the corrosive material from the geothermal turbine after drive of a geothermal turbine drive is heated and evaporated by branched main steam branched from the main steam pipe, and is supplied to the labyrinth seal. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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