Title:
SEAL DEVICE FOR STRUCTURE OF STEAM FEED/DISCHARGE PART FOR COOLING GAS TURBINE
Document Type and Number:
Japanese Patent JP3854341
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To constitute the seal part of a steam feed/discharge part for cooling the moving blade of a gas turbine such that the seal part is movable and to form whole structure in a compact manner.
SOLUTION: The seal device of the structure of a steam feed/discharge part comprises a body case 21 fixed at one end of the wheel chamber 21 of a gas turbine; an uneven surface for a labyrinth formed on the outer surface of the end part 29a of a steam introduction outer pipe 29 extending coaxially with a rotor; an uneven surface for labyrinth formed in the outer surface of the end part 31a of an introduction inner pipe 31 extending through the steam introduction outer pipe 29; a labyrinth ring 33 with which the uneven surface is surrounded; and a seal retainer 35 slidably arranged in a manner to hold the labyrinth ring 33. Further, link arms 37 and 38 pivotally supported at the body case 23 and connected to the seal retainer 35 are connected to the rotary arm of a thermal expansion compensating link mechanism located between a wheel chamber 21 and the support foundation thereof.
Inventors:
Masanori Yuri
Taku Ichiyanagi
Taku Ichiyanagi
Application Number:
JP20484296A
Publication Date:
December 06, 2006
Filing Date:
August 02, 1996
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F01D11/02; F01D25/00; F02C7/28; (IPC1-7): F01D11/02; F01D25/00; F02C7/28
Domestic Patent References:
| JP161298C2 | ||||
| JP4272405A | ||||
| JP6003796A | ||||
| JP3264703A | ||||
| JP10008993A |
Attorney, Agent or Firm:
Michiteru Soga
Yoshio Kobayashi
Yutaka Ikeya
Yoshio Kobayashi
Yutaka Ikeya
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