Title:
AXIAL FLOW TURBINE
Document Type and Number:
WIPO Patent Application WO/2015/068279
Kind Code:
A1
Abstract:
An axial flow turbine comprising solids of revolution (109, 112, 102, 118) and stationary parts (103, 101, 111), wherein the internal downstream side of a balance hole (120), which is formed in a rotor disc (112) constituting part of the solids of revolution and is parallel with the direction of a revolution axis (100), is provided with a guiding channel member (130) in which a plurality of guiding channels, which are inclined in the direction opposite to that which the solids of revolution revolve, are formed from the upstream side toward the downstream side of the balance hole. The tangential velocity of leakage flow passing between the solids of revolution and the stationary parts can thereby be reduced, and unstable vibration of the solids of revolution can be effectively suppressed.
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Inventors:
NISHIJIMA NORIYO (JP)
YAMAGUCHI KAZUYUKI (JP)
ENDO AKIRA (JP)
YAMAGUCHI KAZUYUKI (JP)
ENDO AKIRA (JP)
Application Number:
PCT/JP2013/080311
Publication Date:
May 14, 2015
Filing Date:
November 08, 2013
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01D5/10; F01D5/30
Foreign References:
| JP2013113222A | 2013-06-10 | |||
| JP2006125348A | 2006-05-18 | |||
| JPS60108501A | 1985-06-14 | |||
| JP2001200702A | 2001-07-27 |
Attorney, Agent or Firm:
KASUGA Yuzuru (JP)
Kasuga 讓 (JP)
Kasuga 讓 (JP)
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