大气与环境光学学报 ›› 2016, Vol. 11 ›› Issue (6): 429-434.

• “先进环境监测技术与设备”专辑 • 上一篇    下一篇

车载机动车尾气测量系统高温尾气采样气路设计

刘国华1,2，张玉钧1，陈晨1，高彦伟1，尤坤1，张恺1，何莹1，贺春贵1，鲁一冰1,2，刘文清1   

  1. (1中国科学院安徽光学精密机械研究所中国科学院环境光学与技术重点实验室， 安徽 合肥 230031；
    2 中国科学技术大学，安徽 合肥 230026）?
  • 收稿日期:2016-07-11 修回日期:2016-09-26 出版日期:2016-11-28 发布日期:2016-11-30
  • 通讯作者: 刘国华（1987-），男，湖南衡阳，博士研究生，主要从事环境光学污染气体检测研究。 E-mail:ghliu@aiofm.ac.cn
  • 作者简介:刘国华（1987-），男，湖南衡阳，博士研究生，主要从事环境光学污染气体检测研究。
  • 基金资助:

    Supported by National High Technology Research and Development Program of China(国家863计划, 2014AA06A503）, National Major Scientific Instruments and Equipment Development Project(国家重大科学仪器设备开发专项, 2012YQ22011902）

Design of High Temperature Exhausts Sampling Gas Circuit for Vehicular Exhaust Measuring System

LIU Guohua1,2, ZHANG Yujun1, CHEN Chen1, GAO Yanwei1, YOU Kun1, ZHANG Kai1, HE Ying1, HE Chungui1, LU Yibing1,2, LIU Wenqing1   

  1. (1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China)
  • Received:2016-07-11 Revised:2016-09-26 Published:2016-11-28 Online:2016-11-30

摘要：

为了准确测得机动车高温尾气中的COx、NOx、THC等气体成分，基于旋风分离器原理，详细讨论了高温尾气的预处理方案；以微粒物过滤室、旋风分离器、阻液器和膜式干燥器为主要器件，设计了改进型旋风分离器和车载式高温尾气预处理采样气路；利用微粒物过滤室两次去杂、金属螺旋管降温、旋风分离器去水去杂、阻液器去水、膜式干燥器去水，在不改变尾气气体成分和含量的情况下，提高了样气净度；实验结果表明，预处理后的样气，相对湿度小于2.5%，温度低于40℃，所含颗粒物直径小于5 ?m，且含量极少，满足车载式机动车尾气气体成分分析模块的要求。

关键词: 高温尾气, 采样气路, 旋风分离器, 预处理

Abstract:

To measure COx, NOx, THC and other gas components of vehicle high temperature exhaust accurately, based on the principle of cyclone, the high temperature exhaust pretreatment regimen is discussed in detail. An improved cyclone and vehicular high temperature exhaust pretreatment gas circuit are designed, taking particulate filter chamber, cyclones, fluid resistance and membrane dryers as the main device. Particulate filter chamber is used to remove dust, metal spiral is used to drop temperature, cyclone is used to remove water and dust, resistance dispenser is used to remove water and membrane dryer is used to remove water. Without changing the exhaust gas composition and content, the gas clarity is improved. Experimental results show that the relative humidity of pretreatment gas is less than 2.5%, temperature is below 40 ℃, particles diameter is less than 5 ?m and the content is extremely low. The sampling pretreatment system meets requirements of motor vehicle exhaust composition analysis module.

Key words: high temperature exhaust, sampling gas circuit, cyclone, pretreatment

中图分类号: 

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