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发明公开
CN105020735A 一种抽气式回转空气预热器 无效 - 撤回

一种抽气式回转空气预热器
摘要：
一种抽气式回转空气预热器，属于火力发电厂利用尾部热烟气对冷空气进行回转预热的设备。该回转空气预热器包括外壳、转子、密封片、密封板以及抽气系统；所述抽气系统包括设置在至少一个密封板上的至少一个抽气口、至少一个安装在密封板上包络抽气口的收风箱、至少一个抽气风机和空气利用设备。抽气风机的入口与收风箱通过抽气管道连接，抽气风机的出口通过出风管道与空气利用设备连接；本发明通过设置抽气系统，可以对密封板开口处的压力适度调整，从而降低甚至消除烟气侧与抽气口处的压差，达到降低乃至消除漏风的效果。
摘要（英）：

The invention provides a suction-type rotary air preheater, belonging to equipment which carries out rotary preheating on cold air by using tail hot flue gas in a thermal power plant. The rotary air preheater comprises a shell, a rotor, a sealing piece, a sealing plate and an air exhaust system. The air exhaust system comprises at least one air exhaust port arranged on at least one sealing plate, at least one air receiving box which is installed on the sealing plate and envelops the air exhaust port, at least one air exhaust fan and air utilization equipment. The inlet of the air exhaust fan is connected to the air receiving box through an air exhaust pipe, and the outlet of the air exhaust fan is connected to the air utilization equipment through an air outlet pipe. According to the suction-type rotary air preheater, through arranging the air exhaust system, the pressure of a sealing plate opening can be adjusted properly, thus the pressure difference of a glue gas side and the air exhaust port is reduced or even eliminated, and the effect of reducing and even eliminating air leakage is achieved.

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