粉末静电喷涂固化炉结构设计与数值模拟

Structure Optimization and Numerical Simulation of Powder Electrostatic Spraying Curing Furnace

针对现有以烟气为热源的粉末静电喷涂固化炉进行结构改进和优化设计,主要包括在空气分布器中设置横向、纵向隔板,并在分布孔位置设置呈固定角度折弯的导流板。运用Fluent软件对设计的固化炉的性能进行了数值模拟,研究了空气分布器导流板夹角对固化炉内部空气分布情况、升温速率、温度分布情况以及加热均匀性的影响。结果表明:改进设计的粉末静电喷涂固化炉能够明显缩短升温时间,空气分布器导流板夹角为60°时,粉末静电喷涂固化炉的能耗较低、性能较优。

In this paper, the structure of the fume-heated powder electrostatic spraying curing furnace is improved and optimized, which mainly includes the transverse and longitudinal partitions in air distributor and the fixedangle deflector at the place of air distributed holes. The performance of the designed curing furnace is simulated by Fluent. The influence of the deflector angle of the air distributor on air distribution, heating speed, temperature distri- bution and heating uniformity of the curing furnace is investigated. The results show that the heating time of the designed powder electrostatic spraying curing furnace is significantly reduced, and the curing furnace has lower energy consumption and a better performance when the deflector angle is 60°. This research has great significance in guiding on the structure design and performance optimization of powder electrostatic spraying curing furnace.