湿度对煤尘浓度测量精度的影响实验及其补偿措施  

Study on the Influence of Humidity on Measurement Precision of Coal Dust Concentration and Compensation Method

作　　者：谢双 易俊[1,2] 王杰[3] 王文和 XIE Shuang;YI Jun;WANG Jie;WANG Wenhe(College of Safety Engineering,Chongqing Institute of Science&Technology,Chongqing 401331,China;Chongqing Vocational Institute of Engineering,Chongqing 402260,China;CCTEG Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]重庆科技学院安全工程学院,重庆401331 [2]重庆工程职业技术学院,重庆402260 [3]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《矿业安全与环保》2018年第5期69-73,共5页Mining Safety & Environmental Protection

基　　金：国家重点研发计划项目(2017YFC0805200);重庆科技学院研究生科技创新计划项目(YKJCX1720701)

摘　　要：为了探索环境湿度对煤尘浓度测量精度的影响,在分析激光散射法、β射线法和电荷感应法这3种主要测尘方法原理的基础上,在不同湿度条件下开展了煤尘浓度测量及其误差的实验分析,并指出了各自的补偿方法。煤尘浓度测量实验结果表明:当相对湿度为50%时,3种测尘方法的误差均小于7%;当相对湿度为60%～70%时,激光散射法的误差大于20%,β射线法和电荷感应法的最大误差都约为15%;当相对湿度大于70%时,3种测尘方法的误差都较大。通过对激光散射法和电荷感应法增加湿度检测系统,激光散射法根据湿度调整质量浓度转换系数,电荷感应法根据湿度调整算法的系数,β射线法则采用动态加热的补偿方法,以消除湿度的影响。In order to explore the influence of environmental humidity on the measurement accuracy of coal dust concentration,on the basis of analyzing the principle of the three main methods of dust measurement:laser scattering method,β-ray method and charge sensing method,the measurement of coal dust concentration and its error were carried out under different humidity conditions,and their respective compensation methods were put forward.The experimental results of coal dust concentration measurement show that when the relative humidity is 50%,the error of this three methods is less than 7%;when relative humidity is from 60%to 70%,the error of laser scattering method is more than 20%,the maximum error ofβ-ray method and charge sensing method is about 15%;when the relative humidity is greater than 70%,the error of the three methods is large.To eliminate the influence of humidity,the laser scattering method and the charge sensing method are added the humidity detection system,the laser scattering method adjusts the mass concentration conversion coefficient according to the humidity,the charge sensing method adjusts the coefficients of the algorithm according to the humidity,and theβ-ray method uses the dynamic heating compensation method.

关 键 词：煤尘浓度 激光散射法 Β射线法 电荷感应法 相对湿度 测量误差 补偿修正 

分 类 号：TD714.[矿业工程—矿井通风与安全]