Title:
TURBINE BLADE MAINTENANCE METHOD
Document Type and Number:
WIPO Patent Application WO/2017/115643
Kind Code:
A1
Abstract:
After a bonding coat layer removal step wherein a bonding coat layer (first coating layer) is removed by a chemical process, and a cleaning step wherein a turbine blade is cleaned by blast processing, an adhesion cleaning step (blast particle cleaning step) is executed, wherein an ultrasonic cleaning process (steps S22, S25), in which the turbine rotor blade is immersed in a water bath and ultrasound waves are transmitted in the water bath to clean the turbine rotor blade, and a pressurized water cleaning process (steps S23, S26), in which pressurized water is injected into an internal cooling flow path after the ultrasonic cleaning process, are performed one or more times, and after the adhesion cleaning step a heat-tint step is executed.
Inventors:
TAKEUCHI YASUSHI (JP)
KAWACHI YOSUKE (JP)
INOUE YOSHIYUKI (JP)
KAWACHI YOSUKE (JP)
INOUE YOSHIYUKI (JP)
Application Number:
PCT/JP2016/087066
Publication Date:
July 06, 2017
Filing Date:
December 13, 2016
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F02C7/00; B08B3/08; B24C1/00; F01D5/18; F01D5/28; F01D25/00; F02C7/18
Domestic Patent References:
| WO2009101690A1 | 2009-08-20 |
Foreign References:
| JP2003155935A | 2003-05-30 | |||
| JP2012062834A | 2012-03-29 | |||
| US5507306A | 1996-04-16 |
Other References:
See also references of EP 3315745A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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