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1. (WO2018146946) GEOTHERMAL TURBINE

Pub. No.:    WO/2018/146946    International Application No.:    PCT/JP2017/045433
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Wed Dec 20 00:59:59 CET 2017
IPC: F01D 11/04
F01D 9/02
F01D 9/04
F01D 25/00
F01K 21/00
F03G 4/00
F16J 15/447
Applicants: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
三菱日立パワーシステムズ株式会社
Inventors: TAKATA, Ryo
▲高▼田 亮
TSUCHIYA, Mitsuyoshi
土屋 光由
SHIBATA, Yu
柴田 佑
Title: GEOTHERMAL TURBINE
Abstract:
Provided is a geothermal turbine equipped with a rotor, a casing for housing the rotor, a plurality of moving blades disposed around the rotor, a plurality of stationary blades supported on the casing, and at least one seal part provided in the gap between the rotor and the casing upstream of the first-stage moving blade so as to seal off leaked steam flowing toward the inner side of the rotor in the radial direction from between the first-stage stationary blade in the plurality of stationary blades and the first-stage moving blade in the plurality of moving blades, the geothermal turbine being provided with a steam passage which is configured so as to extract a portion of the steam that has passed the first-stage stationary blade and to pass the steam through the interior of the first-stage stationary blade and discharge the steam into the gap.