Title:
STEAM TURBINE AND METHOD FOR MODIFYING SAME
Document Type and Number:
WIPO Patent Application WO/2024/075468
Kind Code:
A1
Abstract:
In this method for modifying a steam turbine, a blade removal step and a flow path partition step are implemented. In the blade removal step, a plurality of moving blade rows including a moving blade row on the most axially downstream side and adjacent to each other in the axial direction among a plurality moving blade rows are removed, and stationary blade rows adjacent to the plurality of removed moving blade rows on the axially upstream side of the respective moving blade rows among the plurality of stationary blade rows are removed. In the flow path partition step, an annular steam flow path formed between the inner peripheral side of a rotor casing and the outer peripheral side of a rotor shaft is partitioned at a position on the axially downstream side of a final-stage moving blade row, which is the moving blade row on the most axially downstream side among one or more moving blade rows left after the blade removal step.
Inventors:
OGINO TSUTOMU (JP)
YAMAMOTO HIDEO (JP)
SOH SEEMINDARYL (JP)
TATSUMI YASUYUKI (JP)
YAMAMOTO HIDEO (JP)
SOH SEEMINDARYL (JP)
TATSUMI YASUYUKI (JP)
Application Number:
PCT/JP2023/032752
Publication Date:
April 11, 2024
Filing Date:
September 07, 2023
Export Citation:
Assignee:
MITSUBISHI POWER LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F01D25/24; F01D25/00; F01D25/28
Foreign References:
| JPS57124003A | 1982-08-02 | |||
| US20080000237A1 | 2008-01-03 | |||
| CN111927569A | 2020-11-13 | |||
| JPS5960310U | 1984-04-20 | |||
| JPS57119106A | 1982-07-24 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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