Title:
GAS TURBINE ROTOR
Document Type and Number:
Japanese Patent JPH1122402
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To ensure a proper pressure and use this pressure as the pressure in the rotor blade upstream side to ensure the feed of cooling air to the root part of a rotor blade by providing a communicating hole allowing a stationary blade upstream cavity to communicate with a rotor blade groove cavity so as to axially extend through a pair of disc arms. SOLUTION: In working fluid downstream, a rotor blade groove cavity 5 is formed in the upstream end part bottom position opposite to a stationary blade upstream cavity 4. A pair of disc arms 2, 2 axially protruded and extended in the opposite direction and mutually contact in the end parts have a communicating hole 6 axially extended through the disc arms 2, 2. The stationary blade upstream cavity 4 is allowed to communicate with the rotary blade groove cavity 5 by this communicating hole 6. Thus, the pressure loss is eliminated in the upstream side and downstream side of the stationary blade, and the pressure in the stationary blade upstream side is kept substantially as it is as the pressure in the rotary blade upstream side arranged in the following position. Thus, feed of cooling air can be surely performed.
Inventors:
ICHIYANAGI TAKU
TOMITA YASUOKI
TOMITA YASUOKI
Application Number:
JP17409797A
Publication Date:
January 26, 1999
Filing Date:
June 30, 1997
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F01D5/06; F01D5/08; F01D5/18; F01D9/02; F02C7/18; (IPC1-7): F01D5/08; F01D5/06; F01D9/02; F02C7/18
Attorney, Agent or Firm:
Arata Ishikawa (1 person outside)
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