回转式空气预热器的漏风原因分析及防治

Air Leakage Analysis and Precautions of Rotary Air Preheater

回转式空气预热器是大中型电站锅炉广泛应用的尾部换热设备,但漏风率过高是该类设备的致命缺点,影响了整个机组运行的经济性和可靠性。针对漏风的机理,分析了降低漏风的原理及方法,对空气预热器的漏风防治具有一定的指导意义。

Rotary air preheater is used widely in large and middle power boilers. Its fatal shortcoming is that it leaks more air than other kinds of heaters. And this influences the reliability and security of the units. After the analysis of the influence factors of leakage, the paper gives out the principle and methods of reducing leakage, and this will give some help for leakage precautions.