摘要
将锅炉高温受热面管局部交叉运用到锅炉高温受热面热偏差改造中,用局部交叉的方法解决锅炉运行中高温受热面同屏热偏差较大的问题,通过对机组运行状态的分析,计算锅炉运行中高温受热面的屏间热偏差与同屏热偏差,找出产生热偏差的原因,并在此基础上进行壁温计算,提出了局部交叉和结构改造的解决方案。结果表明:这种改造方法工程改造量小,可以有效地降低锅炉高温受热面的热偏差,从而有效控制锅炉高温受热面的壁温,保障锅炉的安全稳定运行。
To reduce the thermal deviation existing in high-temperature heating tubes in the same panel or in different panels of a boiler,an analysis was conducted on the operation status,while relevant calculations were carried out,after which the causes leading to the thermal deviation were found,and subsequently a retrofit scheme was put forward by sectional crossover and other structural modification.Results show that the retrofit requires little engineering work,which may be used to reduce the thermal deviation of high-temperature heating surfaces,thus effectively controlling the wall temperature and securing the safety operation of the boiler.
作者
崇培安
徐洪涛
丁士发
CHONG Peian1, XU Hongtao2, DING Shifa1(1. Shanghai Power Equipment Research Institute Co. , Ltd. , Shanghai 200240, China; 2. Tianji Power Plant, Huaihu Coal ＆ Power Co. , Ltd. , Huainan 232000, Anhui Province, Chin)
出处
《动力工程学报》
CAS
CSCD
北大核心
2018年第6期452-457,512,共7页
Journal of Chinese Society of Power Engineering
关键词
锅炉
热偏差
壁温
局部交叉
boiler
thermal deviation
wall temperature
sectional crossover
