基于CFO器件的卷烟吸阻检测装置设计  

Design of Cigarette Draw Resistance Detection Device Based on CFO Device

作　　者：邹诚志 何爱民 牛小民 曹昌清 赵树弥[1] 朱震[1] 吴晓松[1] 王安[1] ZOU Cheng-zhi;HE Ai-min;NIU Xiao-min(Institute of Applied Technology, Hefei Institutes of Physical Science, ChineseAcademy of Sciences, Hefei, Anhui 230088;China Tobacco Hebei Industrial Co., Ltd., Shijiazhuang, Hebei 050051;Northwest Tobacco Quality Supervision and Test Station,Lanzhou, Gansu 730030)

机构地区：[1]中国科学院合肥物质科学研究院应用技术研究所,安徽合肥230088 [2]河北中烟工业有限责任公司,河北石家庄050051 [3]西北烟草质量监督检测站,甘肃兰州730030 [4]上海市烟草质量监督检测站,上海200082

出　　处：《安徽农业科学》2018年第16期200-204,共5页Journal of Anhui Agricultural Sciences

基　　金：安徽省重大科学仪器专项(1510115223)

摘　　要：针对卷烟吸阻测量过程中临界流量孔件(CFO器件)生成的高速微小气体流量产生的压差受到环境温湿度影响,难以准确测量的问题,设计了由进样模块、标准包覆模块、电路系统、气路系统等组成的卷烟吸阻检测装置,用于精密检测CFO器件生成的高速微小气体流量产生的压差。根据卷烟吸阻测量标准的流量要求(17.5±0.3)mL/s,采用CFO器件产生标准微小气体流量17.5 mL/s作用于烟蒂端。基于STM32的核心控制板,采用压差传感器对测量管路压降精密检测,使用温度传感器和湿度传感器对环境温湿度进行实时监测。通过标准棒修正由差压传感器本身带来的误差以及试验环境中温湿度波动带来的误差。结果表明,卷烟吸阻检测装置实现了测量过程中管路压降的精密测量和温湿度影响的修正,测量精度达5 Pa,比现有测量标准要求提高了1倍。In the measuring process of cigarette draw resistance,a pressure difference was produced by high speed gas micro-flow which was generated by a critical flow orifice device（ Critical flow orifice device,CFO device） and was affected by the temperature and humidity of the environment,it was difficult to accurately measure. A cigarette draw detection device for high precision detecting the pressure difference of CFO device generated was designed. It included sampling module,standard coating module,circuit system,pneumatic system and gas path system. According to the flow measurement standard of cigarette draw resistance requirements（ 17.5 ＋ 0.3） mL/s,the CFO device was used to generate the standard gas micro-flow 17.5 mL/s in cigarette end. Based on the core control panel of STM32,the pressure sensor was used to precisely detect the pressure drop of the measurement pipeline,and the temperature and humidity sensors were used to monitor the environmental temperature and humidity in real time. The error of the differential pressure sensor in itself and the fluctuation of temperature and humidity in the experimental environment were corrected by some standard rods. The cigarette draw resistance detection system was tested. The results showed that the detection device of cigarette draw resistance realized the precise measurement of pipeline pressure drop and the correction of temperature and humidity influence during the measurement process,and the measurement accuracy reached 5 Pa. That＇s twice as much as the existing measurement standards.

关 键 词：卷烟吸阻 压降检测 气体微流量 CFO器件 

分 类 号：TS43[农业科学—烟草工业]