电收尘器入口处的气流分布均匀与否,直接影响收尘器的收尘效率。为了得到均匀分布的气流,在电收尘器入口处安装了气流分布板或导向板,导向板与分布板相比具有压力损失较小的优点。本文以弯管—直管—喇叭管—导向板系统为研究对象,阐述了以弯管入口处气流的边界条件来预测导向板的最佳分布方案。 Electric dust collector at the entrance of the air flow distribution or not, directly affect the dust collector dust collection efficiency. In order to obtain an even distribution of the air flow, an air distribution plate or guide plate is installed at the entrance of the electrostatic precipitator. The guide plate has the advantage of less pressure loss than the distribution plate. In this paper, the elbow-straight pipe-trumpet-guide plate system is taken as the research object. The optimal distribution of the guide plate is predicted by the boundary conditions of the airflow at the inlet of elbow.