Title:
STEAM TURBINE DAMAGE EVALUATING DEVICE, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/255229
Kind Code:
A1
Abstract:
Provided is a technology for employing a simulation to precisely evaluate creep deformation behavior of a nozzle diaphragm of a steam turbine that is operated in a power generation plan involving large output variations. A damage evaluating device (10) is provided with: an acquiring unit (11) for acquiring detected data (31) from each of a plurality of sensors (21) installed in a steam turbine (20); a calculating unit (15) for calculating an operating state quantity (ϕ) of a nozzle diaphragm of the steam turbine (20) on the basis of the detected data (31); a computing unit (16) for computing a creep deformation speed (V) of the nozzle diaphragm on the basis of the operating state quantity (ϕ); and an estimating unit (17) for estimating an amount of deformation (D) of the nozzle diaphragm from the creep deformation speed (V), on the basis of a future operation plan (26) for the steam turbine (20).
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Inventors:
SUZUKI YUSUKE (JP)
KASE KENICHI (JP)
KAWAI YASUTERU (JP)
KASE KENICHI (JP)
KAWAI YASUTERU (JP)
Application Number:
PCT/JP2022/021639
Publication Date:
December 08, 2022
Filing Date:
May 26, 2022
Export Citation:
Assignee:
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)
International Classes:
F01D9/04; F01D25/00
Foreign References:
| JPS60147505A | 1985-08-03 | |||
| JPS62118011A | 1987-05-29 | |||
| JP2002277382A | 2002-09-25 | |||
| US20060116847A1 | 2006-06-01 |
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
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