回转式空气预热器冷端漏风原因分析及控制措施

华电技术 ›› 2016, Vol. 38 ›› Issue (4): 15-17.

回转式空气预热器冷端漏风原因分析及控制措施

上海市东方海事工程技术有限公司，上海〓200011

出版日期:2016-04-25 发布日期:2016-07-11

Reason analysis of cold end air leakage of rotary air preheater and its control measures

Shanghai Orient Marine Engineering Technology Company Limited,Shanghai 200011,China

Online:2016-04-25 Published:2016-07-11

摘要/Abstract

摘要：

摘要：目前国内火电机组发电负荷普遍低于设计负荷，回转式空气预热器热变形不充分，致使冷端漏风增加，加剧空气预热器冷端腐蚀和堵灰，降低锅炉效率，增加运行成本。针对以上问题，分析了回转式空气预热器冷端漏风的形成机理，从动密封和静密封两方面着手，提出了多种方式相结合的冷端漏风控制方法。

关键词:

关键词：回转式空气预热器, 冷端漏风, 动密封, 静密封

Abstract:

Abstract:At present,the generation loads of thermal power units in the domestic are generally lower than the design loads.In addition,the insufficient thermal deformation of rotary air preheater could increase the cold end air leakage,corrosion and clogging,which will reduce the boiler efficiency and increase the operation cost.For the problems above,this paper analyzed the formation mechanism of cold end air leakage of rotary air preheater and proposed a control method of combining a variety of ways from two aspects of dynamic seal and static seal.

Key words:

Keywords:rotary air preheater, cold end air leakage, dynamic seal, static seal

杜艳青，张春晖，杨迪. 回转式空气预热器冷端漏风原因分析及控制措施[J]. 华电技术, 2016, 38(4): 15-17.

DU Yanqing,ZHANG Chunhui,YANG Di.

Reason analysis of cold end air leakage of rotary air preheater and its control measures

[J]. Huadian Technology, 2016, 38(4): 15-17.