铸造车间空中移动式烟气捕集罩气流组织优化研究  

Optimization Study of Airflow Organization of Aerial Mobile Fume Trapping Hood in Foundry Workshop

作　　者：孔令旭 宋高举 赵虎 刘统洲 徐恩献 强天伟[1] KONG Ling-xu;SONG Gao-ju;ZHAO Hu;LIU Tong-zhou;XU En-xian;QIANG Tian-wei(Xi′an Engineering University,Xi′an 710048,Shaanxi,China;SIPPR Engineering Group Co.,Ltd.,Zhengzhou 450007,Henan,China;CITIC Heavy Industries Co.,Ltd.,Luoyang 471003,Henan,China)

机构地区：[1]西安工程大学,陕西西安710048 [2]机械工业第六设计研究院有限公司,河南郑州450007 [3]中信重工机械股份有限公司,河南洛阳471003

出　　处：《铸造》2024年第7期923-932,共10页Foundry

摘　　要：因铸件浇注工序产生烟气的污染源位置不固定、源强变化大、实施污染气体捕集的空间位置不足等问题,成为铸造车间营造职业卫生环境的难点。设计了一套空中移动式烟气捕集罩,采用数值模拟的方法研究了捕集效率的影响因素。结果表明,增设捕集罩后可以提高捕集范围内风速约0.1 m/s,送风风速为2 m/s时,捕集效果最好;污染源温度为200℃时的颗粒物捕集率比温度为800℃时的捕集率提高19.7%,污染源位于捕集罩正下方时的颗粒物捕集率比位于侧方4 m处的捕集率提高9.9%,污染源直径为1 m时的颗粒物捕集率比直径为3 m时的捕集率提高35.8%。通过本研究可为铸造车间空中移动式捕集罩的工程应用提供参数支撑。Due to the location of the source of fumes from the casting process is not fixed,the source intensity varies greatly and the implementation of pollution gas capture space location is insufficient,which has become a difficulty to create an occupational health environment in the foundry.A set of aerial mobile flue gas capture hood is designed.Numerical simulation is used to study the factors affecting the trapping efficiency.The results show that the addition of the capture hood can increase the wind speed in the capture range to about 0.1 m/s.The best trapping effect is achieved when the air velocity is 2 m/s.And 19.7%increase in particulate matter capture rate at a source temperature of 200℃compared to 800℃,9.9%increase in particulate matter capture rate when the source is located directly underneath the capture hood compared to the capture rate at 4 m to the side.The capture rate of particulate matter at 1 m diameter of the source is 35.8%more than that at 3 m diameter.This study can provide parametric support for the engineering application of aerial mobile trapping hoods in foundries.

关 键 词：铸造 移动式捕集罩 悬浮烟气 气流组织 

分 类 号：TG28[金属学及工艺—铸造]