Analysis and correction of defects in heating surfaces of domestic 1 000 MW ultrasupercritical boiler during construction period

Huadian Technology ›› 2010, Vol. 32 ›› Issue (11): 1-4.

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Analysis and correction of defects in heating surfaces of domestic 1 000 MW ultrasupercritical boiler during construction period

DONG Kun1, WANG Huanli2, XU Aijun2

1.Shenhua Guohua (Beijing) Electric Power Research Institute Corporation Limited, Beijing 100069, China; 2.Shenhua Guohua Xuzhou Power Generation Corporation Limited, Xuzhou 221166, China

Received:1900-01-01 Revised:1900-01-01 Online:2010-11-25 Published:2010-11-25

Abstract

Abstract: The development trend of the domestic thermal power industry is to construct the ultrasupercritical units with large capacity. Along with the increasing of the steam pressure and the steam temperature of the unit, the steel grade selected for the boiler heating surface is increased continuously. In the construction period, the top priority is to control the welding process and the welding quality of boiler heating surface. In the construction period of the first 1 000 MW ultrasupercritical boiler in Shenhua Guohua Xuzhou Power Generation Corporation Limited, the supervision of metal quality was enhanced. By inspecting, the defects and the potential hazards of the heating surface tubes were found, and some effective measures were adopted, so the safe, stable and longperiod operation of the unit was ensured.

Key words: ultra-supercritical, boiler, heating surface, defect, safety

DONG Kun;WANG Huanli;XU Aijun. Analysis and correction of defects in heating surfaces of domestic 1 000 MW ultrasupercritical boiler during construction period[J]. Huadian Technology, 2010, 32(11): 1-4.

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Analysis and correction of defects in heating surfaces of domestic 1 000 MW ultrasupercritical boiler during construction period

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