Title:
COOLING STRUCTURE FOR TURBINE, AND GAS TURBINE
Document Type and Number:
WIPO Patent Application WO/2016/076003
Kind Code:
A1
Abstract:
Provided are a cooling structure for a turbine, and a gas turbine, which are configured so as to reduce power required for cooling cooling-air and so as to increase a turbine output. A cooling structure for a turbine is configured such that: disks (31) rotating with rotor blades are arranged along the axis (L) of rotation; and the disks (31) have formed therein disk holes (32) arranged in the circumferential direction and supplying to downstream disks cooling air for cooling the rotor blades. At least one of the disk holes in at least one of the disks (31) is set such that, when the rotational direction of the disk (31) is defined as the positive direction and the direction opposite the rotational direction is defined as the negative direction, an outlet absolute circumferential velocity vector (Vt_D) which is a component in the rotational direction U of the velocity vector (C2) of the cooling air at the outlet (32a) of the disk hole (32) is smaller than an inlet absolute circumferential velocity vector (Vt) which is a component in the rotational direction (U) of the velocity vector (C1) of the cooling air at the inlet (32b) of the disk hole (32).
Inventors:
FUJIMURA DAIGO (JP)
Application Number:
PCT/JP2015/075323
Publication Date:
May 19, 2016
Filing Date:
September 07, 2015
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D5/08; F01D25/12; F02C7/18
Foreign References:
| JP2007298020A | 2007-11-15 | |||
| JP2000297607A | 2000-10-24 | |||
| JP2011021542A | 2011-02-03 |
Attorney, Agent or Firm:
SANADA, TAMOTSU (JP)
Sanada 有 (JP)
Sanada 有 (JP)
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