Analysis on reasons of crack of 600 MW steam turbine highpressure cylinder and treatment

Huadian Technology ›› 2011, Vol. 33 ›› Issue (4): 12-14.

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Analysis on reasons of crack of 600 MW steam turbine highpressure cylinder and treatment

HOU Shiyong1,ZHANG Yanfei2

1.Huadian Inner Mongolia Energy Corporation Limited, Baotou Power Generation Branch Company, Baotou 014013, China; 2.Inner Mongolia Electric Power Research Institute, Hohhot 010020, China

Received:1900-01-01 Revised:1900-01-01 Online:2011-04-25 Published:2011-04-25

Abstract

Abstract: In overhaul of 600 MW unit of Huadian Inner Mongolia Energy Corporation Limited Baotou Power Generation Branch Company, it was found that cracks were occurred in highpressure outer casing. The reasons of the cracks were analyzed. The advantages and disadvantages of several patch weld technologies were compared. Finally, the lowtemperature preheating nickelwelding materialused patch weld technology was selected and adopted, and favorable effect was obtained.
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Key words: steam turbine, HP cylinder, crack, patch weld

HOU Shiyong;ZHANG Yanfei. Analysis on reasons of crack of 600 MW steam turbine highpressure cylinder and treatment[J]. Huadian Technology, 2011, 33(4): 12-14.

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Analysis on reasons of crack of 600 MW steam turbine highpressure cylinder and treatment

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