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International journal of fluid machinery and systems v.1 no.1, 2008년, pp.121 - 139   피인용횟수: 1

Investigation of Corrosion Fatigue Phenomena in Transient Zone and Preventive Coating and Blade Design against Fouling and Corrosive Environment for Mechanical Drive Turbines

Hata, Satoshi    (Hiroshima Machinery Works Turbomachinery Engineering Department   ); Nagai, Naoyuki    (Hiroshima Research & Development Center Mitsubishi Heavy Industries, Ltd.   ); Yasui, Toyoaki    (Hiroshima Research & Development Center Mitsubishi Heavy Industries, Ltd.   ); Tsukamoto, Hiroshi    (Kyushu Institute of Technology Graduate School of Life Science and Systems Engineering Department of Biological Functions and Engineering Biofluid Mechanics  );
  • 초록

    For mechanical drive steam turbines, the investigation results of corrosion fatigue phenomena in the transient zone are introduced, including basic phenomena on expansion line and actual design and damage experience. These results were analyzed from the standpoint of stress intensity during the start of cracking. In order to resolve such problems, preventive coating and blade design methods against fouling and corrosive environments are developed. Detailed evaluation test results are given for coating performance using a unique test procedure simulating fouling phenomena and washing conditions. Finally, the results of the successful modification of internals and on-line washing results on site are introduced.


  • 주제어

    Steam Turbine .   Corrosion Fatigue .   Wilson Zone .   Thermodynamics .   Numerical Analysis .   ISB .   Surface Treatment .   Hybrid Coating .   Deposits .   Corrosion .   Erosion .   On-line wash.  

  • 참고문헌 (26)

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    3. Jonas Otakar, 1984, Understanding Steam Turbine Corrosion 84, pp. 55 2 -55 28. 
    4. Ebara Ryuichiro, et al., 1978, “Corrosion Fatigue Behavior of 13Cr Stainless Steel for Turbine Moving Blade,” MitsubishiHeavy Industry Technical Bulletin Vol.15 No.3, pp. 1-10. 
    5. Naumann Hekmut G., Steam Turbine Blade Design Options: How to Specify or Upgrade, Proceedings of 11thTurbomachinery Symposium, pp. 29-49. 
    6. Kihara Hiroshi, Fractography. 
    7. Wagner L.F, Griffin J.H, 1996, “Forced Harmonic Response of Grouped Blade Systems: PartⅠ-Discrete Theory,” Transaction of the ASME, Vol.118, pp. 130-136. 
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    9. Ebara Ryuichiro, 1982, Japan Steel Society, Nishiyama Memorial Technical Session, Environment Crack of Steel. 
    10. Ebara Ryuichiro, et al., “Corrosion-Fatigue Behavior of 13Cr Stainless Steel in Sodium-Chloride Aqueous Solution andSteam Environment,” American Society for Testing and Materials, Corrosion-Fatigue Technology, pp. 155-168. 
    11. Steltz W.G, et al., 1983, “Verification of Concentrated Impurities in Low Pressure Steam Turbines,” Transactions of theASME, Vol.105, pp. 192-198. 
    12. Bischoff James L, et al., 1989, “Liquid-Vapor Relations for the System NaCl-H2O: Summary of the P-T-x Surface from$300^{\circ}C\;to\;500^{\circ}C$,” American Journal of Science, Vol.289, pp. 217-248. 
    13. Allmon.W.E. et al., 1983, “Deposition of Salts from Steam,” International Water Conference, pp. 127-138. 
    14. Maday M.F. et al., “Stress Corrosion Cracking Behavior of Two Ni-Cr-Mo-V Steels in Caustic Solutions and PureOxygenated Water,” Corrosion Vol.45, No.4, pp. 273-281. 
    15. Ebara Ryuichiro .et al., 1990, “Corrosion Fatigue Process of 12 Cr-Stainless Steel,” ISIJ Inter-national, Vol.30, No.7, pp.535-539. 
    16. Katayama Kazuso, et al., 1977, “High-Speed and Large Capacity Compressor-Driving Turbines for Chemical Plants,”Mitsubishi Heavy Industry Technical Bulletin Vol.14 No.5, pp. 1-9. 
    17. Bhat. G.I., Hata. S. et al., 2004, “New Technique for Online Washing of Large Mechanical?Drive Condensing SteamTurbines,” Proceedings of the 33rd Turbomachinery Symposium, pp. 57-65. 
    18. Hata. S. et al., 2005, “Recent Technologies for the Reliability and Performance of Mechanical-Drive Steam Turbines inEthylene Plants,” Proceedings of the 34th Turbomachinery Symposium, pp. 15-23. 
    19. Hata, S., Sasaki, T., Ikeno, K., 2002, “New Technologies of Synthesis Gas Compressor Drive Steam Turbines for IncreasingEfficiency and Reliability,” Proceedings of the 31st Turbomachinery Symposium, Houston, pp. 75-83. 
    20. Hata, S., 2007, “New Technique for Online Washing of Large Mechanical?Drive Condensing Steam Turbines,” Proceedingsof 2007 AIChE Spring National Meeting Ethylene Producer Conference, Houston. 
    21. Hata, S., 2007, “Case Study: Assessing a New Technique for Online Washing of Large Mechanical?Drive Condensing SteamTurbines, “ Proceedings of ROTATE 2007, UAE Abu Dhabi. 
    22. S. Hata, T. Hirano, N., T. Wakai, H. Tsukamoto, 2007, “New On Line Washing Technique for Prevention of PerformanceDeterioration due to Fouling on Steam Turbine Blades (1st Report: Fouling Phenomena, Conventional Washing Technique andDisadvantages),” Transaction of JSME Div. B, Vol.72, No.723, pp. 2589-2595. 
    23. S. Hata, T. Hirano, N., T. Wakai, H. Tsukamoto, 2007, “New On Line Washing Technique for Prevention of PerformanceDeterioration due to Fouling on Steam Turbine Blades, (2nd Report: Basic Experiment and Analysis for Actual Operation ofWashing System) ,” Transaction of JSME Div. B, Vol.72, No.724, pp. 2970-2979. 
    24. S. Hata, T. Miyawaki, N. Nagai, T. Yamashiata, H. Tsukamoto, 2007, “Study on Corrosion Fatigue Phenomena of LowPressure Blades and Integrity Improvement for Mechanical Drive Steam Turbines (1st Report: Relation of Corrosive ChemicalsEnrichment Zone and Corrosion Fatigue) ,” Turbomachinery, Vol.35, No.2, pp. 8-16. 
    25. S. Hata, T. Yasui, K. Yamada, H. Tsukamoto, 2007, “Study on Corrosion Fatigue Phenomena of Low Pressure Blades andIntegrity Improvement for Mechanical Drive Steam Turbines (2nd Report: Operation Life Extension by Blade Surface Treatmentand Coating),” Turbomachinery, Vol.35, No.3, pp. 50-59. 
    26. S. Hata, 2001, “Blades Improvement for Mechanical Drive Steam Turbines, Coating Technologies applied for Nozzle andBlade of Mechanical Drive Steam Turbine,” Turbomachinery, Vol.29, No.5, pp. 40-47. 
  • 이 논문을 인용한 문헌 (1)

    1. Lee, Hyoungwook ; Lee, Geunan ; Kim, Jeongbae 2014. "Thermal Deformation Analysis of a Scroll Compressor for Automobile according to the Change of Materials" 한국태양에너지학회 논문집 = Journal of the Korean Solar Energy Society, 34(6): 67~74     

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