| 摘要 |
PROBLEM TO BE SOLVED: To provide a geothermal turbine capable of suppressing the reduction of a thickness caused by the corrosion of the ground, and sealing the ground part by feeding steam for ground sealing by providing a structure capable of suppressing the generation of drain at the ground part, and easily discharging the drain generated at the ground part. SOLUTION: The geothermal turbine comprises a turbine rotor with a plurality of turbine blades mounted thereon, a turbine casing to cover the entire turbine blades, and the ground part having a labyrinth seal at a part where the turbine rotor passes through the turbine casing, and suppresses the leakage of geothermal steam by feeding steam for ground sealing to the ground part. A discharge port of the steam for ground sealing fed to the ground part is formed in a lowest part of the ground part, and a box communicating with the discharge port is formed below the discharge port. The steam for the gland seal fed to the ground part and the drain generated at the ground part are discharged to the outside via the box. COPYRIGHT: (C)2009,JPO&INPIT
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