Title:
STEAM TURBINE
Document Type and Number:
WIPO Patent Application WO/2017/033226
Kind Code:
A1
Abstract:
This steam turbine (1) is equipped with: a rotor shaft (21) which has disk parts (23) extending toward the radial outer side (Dro) from a shaft core part (22) rotating about an axis (Ar); and multiple rotor blades (32) which are arranged in the circumferential direction (Dc) of the shaft core part (22). First surfaces (100) directed in a first direction, including a directional component toward the radial inner side (Dri), are formed on each of the rotor blades (32). Second surfaces (200) facing the first surfaces (100) are formed on each of the disk parts (23). Recesses are formed on the first surfaces (100) and/or the second surfaces (200) so as to form balance hole parts (40A) as communication paths in the axial direction (Da).
Inventors:
KODA TAKURO (JP)
Application Number:
PCT/JP2015/073511
Publication Date:
March 02, 2017
Filing Date:
August 21, 2015
Export Citation:
Assignee:
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
International Classes:
F01D13/00
Foreign References:
| JP2001200702A | 2001-07-27 | |||
| JPH06137110A | 1994-05-17 | |||
| JP2000337294A | 2000-12-05 | |||
| US20120283994A1 | 2012-11-08 | |||
| JP2003106102A | 2003-04-09 | |||
| JPS5872604A | 1983-04-30 | |||
| US20120036864A1 | 2012-02-16 |
Other References:
See also references of EP 3293362A4
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
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