Title:
GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2015/056498
Kind Code:
A1
Abstract:
A gas turbine provided with: a blade ring (43) that marks off an annular first cavity (61) as a result of being connected to the inner periphery of a turbine casing (26); a plurality of heat-insulating rings (46, 47) that are connected to the inner periphery of the blade ring (43) at a predetermined axial direction interval; a plurality of partitioning rings (49, 51) that are connected to the inner periphery of the plurality of heat-insulating rings (46, 47); a plurality of rotor blade bodies (54) that are spaced at a predetermined axial direction interval, are affixed to the outer periphery of a rotor (32), and are arranged so as to face the plurality of partitioning rings (49, 51) in the radial direction; a plurality of stator blade bodies (53) that mark off an annular second cavity (62) as a result of an exterior shroud (56) being affixed to the heat-insulating rings (46, 47) between the plurality of rotor blade bodies (54); a second cooling-air supply route (74) that supplies compressed air to the second cavity (62); a first cooling-air supply route (71) that supplies cooling air that has a lower temperature than the compressed air to the first cavity (61); and a cooling-air discharge route (72) that discharges the cooling air from the first cavity (61). The gas turbine thereby provides an appropriate amount of clearance between rotor blades and the side of a turbine casing and has improved performance.
Inventors:
HASHIMOTO SHINYA (JP)
Application Number:
PCT/JP2014/073698
Publication Date:
April 23, 2015
Filing Date:
September 08, 2014
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F02C7/18; F01D11/08; F01D17/08; F02C7/28
Foreign References:
| JP2008121685A | 2008-05-29 | |||
| JP2005054777A | 2005-03-03 | |||
| JPH11294104A | 1999-10-26 | |||
| JP2009156261A | 2009-07-16 | |||
| JP2006002766A | 2006-01-05 |
Attorney, Agent or Firm:
SAKAI, Hiroaki et al. (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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