屏式过热器爆管原因分析  

CAUSE ANALYSIS OF TUBE-BURST ON PLATEN SUPERHEATER

作　　者：张晓昱[1] 杨建菊[1] 欧阳杰[1] 赵素芬 

机构地区：[1]河北省电力研究院,河北石家庄050021 [2]华电石家庄热电有限公司,河北石家庄050021

出　　处：《热力发电》2007年第12期83-85,共3页Thermal Power Generation

摘　　要：通过采用化学成分分析、宏观检验和显微组织分析等方法对石家庄热电有限公司屏式过热器爆管试样进行了分析,并通过氧化皮厚度估算了其当量温度,计算出屏式过热器剩余寿命。分析认为屏式过热器爆管为长时间超温运行,造成材料组织老化及腐蚀引起,建议运行中加强高温金属部件入厂检验、在线监测及寿命评估等,以确保机组安全运行。Through methods, such as chemical composition analysis, macroscopic examination, and microstructure analysis etc. , the causes resulting in tube - burst on platen superheater in Shijiazhuang Thermal Power Co Ltd have been analysed, the equivalent temperature being estimated through thickness of the oxide skin, and residual service life being calculated. It is recommended to strengthen the plant - incoming inspection of high -temperature metallic parts, online monitoring, and service 1;re evaluation etc. , so as to ensure safe operation of the unit.

关 键 词：G102钢 爆管 屏式过热器 寿命评估 

分 类 号：TK223.32[动力工程及工程热物理—动力机械及工程] TG115[金属学及工艺—物理冶金]