间隙自补偿漏风控制系统在空气预热器密封改造中的应用  

Application of gap self-compensating air leakage control system in air preheater seal reformation

作　　者：徐百强 孙延维 

机构地区：[1]哈尔滨兴隆锅炉有限公司,哈尔滨150089

出　　处：《华电技术》2014年第8期21-23,77,共3页HUADIAN TECHNOLOGY

摘　　要：回转式空气预热器漏风率较高是一直困扰各大发电企业的难题,它严重影响着机组的经济运行。哈尔滨兴隆锅炉有限公司采用一种全新的漏风控制技术——间隙自补偿漏风控制系统,在湖北能源集团鄂州发电有限公司#3机组大修期间对空气预热器进行了密封改造。改造后,机组在满负荷及变负荷运行的情况下,漏风率长期保持在4%~5%,保证了机组的经济运行。The larger air leakage rate of the rotary air preheater is difficulty troubling many large power generation enterprises,and it influences on unit economic operation seriously. Using a new air leakage control technology —— the gap self-compensating air leakage control system,the Harbin Xinglong Boiler Company Limited implemented the air preheater seal reformation of unit No. 3 in Ezhou Power Generation Company limited of Hubei Energy Group during the unit overhaul period. After reformation,under unit full load and variable load conditions,the air leakage rate remained within 4% ~ 5% for long term,and the unit economic operation was ensured.

关 键 词：空气预热器 密封改造 间隙自补偿漏风控制系统 效果 效益 

分 类 号：TK223.34[动力工程及工程热物理—动力机械及工程]