热风吹扫系统电除尘器绝缘子室数值模拟

Numerical simulation of the insulator chamber of electrostatic precipitator in the hot air blowing system

为防止烟道气在绝缘件表面结露和粉尘吸附在绝缘件表面,电除尘器绝缘子室(保温箱)采用了热风吹扫系统和承压绝缘子上盖板开孔的措施。利用ANSYS Fluent进行数值模拟,得到了相应的绝缘子室的速度场和温度场,并将特定位置的温度与实测值进行了比较。通过分析可知,在热风吹扫系统、上盖板开孔和加热管三者相结合的情况下,解决了烟道气在绝缘件表面结露和侵入烟尘粘结在绝缘件表面,从而使得绝缘件的寿命得以延长。

In order to prevent the condensation of flue gas and adsorption of dust on the surface of the insulating parts, the electrostatic precipitator insulator chamber （incubator） adopts hot air blowing sys-tem and upper cover plate with holes. Numerical simulation was carried on by ANSYS Fluent, and the velocity field and temperature field of the insulator chamber was obtained. Furthermore the temperature of the specific positions was compared with the measured value. Through the analysis, with the combi-nation of hot air blowing system, upper cover plate with holes and a heating pipe, condensation prob-lem of flue gas and adhesion of intrusive smoke dust can be avoided on the surface of insulating parts. Thereby the lifespan of insulating parts can be prolonged.