双密封技术在回转式空气预热器密封改造中的应用  

APPLICATION OF DUAL-SEALING TECHNOLOGY IN RETROFITTING SEAL OF ROTARY AIR PREHEA TERS

作　　者：刘贵锋[1] 孙建波 

机构地区：[1]淮北国安电力有限公司,安徽淮北235106 [2]北京华能达电力技术应用有限公司,北京100053

出　　处：《热力发电》2005年第3期37-38,41,共3页Thermal Power Generation

摘　　要：通过对淮北第二发电厂2台300 MW燃煤机组锅炉回转式空气预热器(空预器)漏风原因的分析, 提出了空预器“双密封”改造的可行性方案。改造后,较好地解决了回转式空预器漏风大、自动漏风控制系统可靠性差等问题。Through cause analysis of air leakage in rotary air preheaters for boilers of two 300 MW coal-firing units at Huaibei Power Plant No.2,a feasible scheme of retrofitting the said air preheaters into dual-sealing has been put forward.After retrofitting,problems such as large amount of air leakage in said air preheaters and bad reliability of automatic air leakage control system etc.have been solved.

关 键 词：锅炉 回转式 空预器 漏风 双密封 改造 

分 类 号：TK223.34[动力工程及工程热物理—动力机械及工程]