本文介绍应用国内最新的两维激光测速仪,对1000吨/时锅炉水模型水平烟道沉灰区域内的流场分布进行测量,并对测量结果作出初步分析。测量数据的分析表明,该区域内流场分布特殊,一直延续到后烟道入口,这是造成水平烟道沉灰的基本原因。改变折焰角结构后,沉灰现象即获得明显改善。这种特殊的气流分布认为是起源于炉膛旋转上升气流。 This paper introduces the application of the latest two-dimensional laser velocimeter in our country to measure the flow field distribution in the horizontal flue and ash deposition zone of a 1000 t / h boiler water model and to make a preliminary analysis of the measurement results. The analysis of the measured data shows that the flow field in this area is special and has been extended to the entrance of the post-flue, which is the basic reason for the fouling of horizontal flue. After changing the structure of the folding angle, the phenomenon of sinking ash has been significantly improved. This special distribution of air flow is thought to originate from the rotation of the hearth.