回转式空气预热器漏风分析和在安装中的预防措施

回转式空气预热器是大型电站锅炉上广泛采用的烟风换热设备，通常布置在锅炉后部。 漏风量高是该类设备的致命缺点，随着机组容量的增大，预热器的直径和高度也在增大，漏风的条件有所增加，所以在回转式空气预热器安装中，降低空气预热器漏风量，防止漏风超标是很重要的。 对空气预热器的漏风进行了分析，提出了在安装过程中所需要采取的控制方法和对策。

Analysis on Rotary Air Pre-heater Air Leakage and Preventive Measures During Its Installation

Rotary air pre-heater is a flue-gas air heat exchange device widely used in large power boilers,which is usually located to the boiler rear.High air leakage is the fatal drawback of such devices.With capacity increase the pre-heater diameter and height grow up together,and so conditions for air leakage are also increased.It is very important to reduce pre-heater air leakage and prevent leakage from exceeding specifications during pre-heater installation.The paper analyzes the leakage and gives out control m...