空氣預熱器采用的是安全離合器裝置。空氣預熱器與其他設備相比較,具有橫截面尺寸小,密封性能好,操作安全方便以及性價比高等優點。The safety clutch device used in the air preheater. Compared with other equipments, the air preheater has the advantages of cross section size, good sealing performance, convenient operation and high performance ratio.