摘要
某工业园区自备电厂锅炉水冷壁管在运行期间多次发生穿孔事故,通过内壁垢样分析和金相检验等方法,结合现场工况,对水冷壁管的穿孔原因进行了分析。结果表明:锅炉内水的电导率和SiO_(2)含量偏高,且现场缺少在线仪表监测,造成内壁结垢,继而引发了垢下局部碱腐蚀,造成管壁减薄至无法承受工作应力而穿孔爆裂。
The boiler water wall tube in an industrial park′s own power plant perforated for many times during operation.The causes of perforation on water wall tube were analyzed by means of inner wall scale analysis and metallographic examination,combined with the field conditions.The results show that the conductivity and SiO2 content of water in boiler were high,and there was no on-line instrument monitoring in the field,which led to the alkali corrosion under the scale,resulted in the tube wall thinning to unable to bear the stress and the perforation and burst.
作者
郭丹
彭章华
张维科
翟光杰
何成文
蒋华
GUO Dan;PENG Zhanghua;ZHANG Weike;ZHAI Guangjie;HE Chengwen;JIANG Hua(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710032,China;Inner Mongolia Lantai Industrial Co.,Ltd.,Wuhai 016000,China;Shanxi Zhongdian Shentou Second Power Generation Co.,Ltd.,Shuozhou 036011,China)
出处
《理化检验（物理分册）》
CAS
2021年第3期73-77,共5页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
水冷壁管
爆裂
垢下碱腐蚀
水质
water wall tube
burst
alkali corrosion under scale
water quality
