Title:
SEAL RING FOR STEAM TURBINE
Document Type and Number:
WIPO Patent Application WO/1999/045240
Kind Code:
A1
Abstract:
A seal ring used between rotating parts of a rotating machine such as a steam turbine capable of preventing a sealing performance from lowering by accurately moving the seal ring as specified, comprising seal ring part pieces respectively constituting divided upper and lower parts and right and left parts of the ring, wherein these divided pieces are arranged so that the one side surfaces of them are brought in contact slidably with each other by a vertically energized spring installed between one side surfaces of the seal ring parts, and a seal guide for guiding the seal ring part pieces in vertical direction is provided to prevent a collision between the seal ring part pieces and to move them inward under load so as to reduce clearances between seal fins and corresponding surfaces.
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Inventors:
MAGOSHI RYOTARO (JP)
KONISHI TETSU (JP)
YOSHIDA ZENICHI (JP)
KONISHI TETSU (JP)
YOSHIDA ZENICHI (JP)
Application Number:
PCT/JP1999/000770
Publication Date:
September 10, 1999
Filing Date:
February 22, 1999
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
MAGOSHI RYOTARO (JP)
KONISHI TETSU (JP)
YOSHIDA ZENICHI (JP)
MAGOSHI RYOTARO (JP)
KONISHI TETSU (JP)
YOSHIDA ZENICHI (JP)
International Classes:
F01D11/00; F01D11/02; F01D25/16; F02C7/28; F16J15/34; F16J15/44; (IPC1-7): F01D11/00; F16J15/447
Foreign References:
| JPS57116972A | 1982-07-21 | |||
| JPS60111004A | 1985-06-17 | |||
| JPS633570U | 1988-01-11 |
Other References:
See also references of EP 1061237A4
Attorney, Agent or Firm:
Ishikawa, Arata (Toranomon 1-chome Minato-ku Tokyo, JP)
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