煤矿井下粉尘和瓦斯环境模拟校验装置
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摘要
设计制做了一个可以产生粉尘和甲烷并控制湿度的新型球型环境模拟舱,用来校验仪器并对干扰因素分析解耦。通过气溶胶发生器发生的NaCl颗粒来模拟粉尘,再混入低浓度的甲烷,通过内置的风扇搅拌均匀,再通过Zigbee无线技术将内置的传感器得到的湿度、甲烷浓度信号传给STM32单片机,再由单片机传给上位机的Labview上显示并控制球舱里面的湿度、甲烷浓度。结果表明球舱内颗粒物浓度均匀性良好,重复性误差不超过6%。湿度范围在10%～90%可控,甲烷浓度均匀并在1%以下可控。
A new spherical environment simulation cabin was designed, which can produce dust and methane and control humidity. It is also used to calibrate the instruments and decouple the interference factors. The aerosol generator produces NaCl particles to simulate the dust, then mixes with a certain concentration of methane, stirs evenly through the built-in fan, then transmits the humidity and methane concentration signals from the built-in sensor to STM32 MCU by Zigbee wireless technology,and then transmits them to Labview and controls the humidity and methane concentration inside. The results showed that the particle concentration uniformity in the cabin was good, and the repeatability error was less than 6%. The humidity range was controlled between 10% and 90%, and the methane concentration was uniform and controlled below 1%.
A new spherical environment simulation cabin was designed, which can produce dust and methane and control humidity. It is also used to calibrate the instruments and decouple the interference factors. The aerosol generator produces NaCl particles to simulate the dust, then mixes with a certain concentration of methane, stirs evenly through the built-in fan, then transmits the humidity and methane concentration signals from the built-in sensor to STM32 MCU by Zigbee wireless technology,and then transmits them to Labview and controls the humidity and methane concentration inside. The results showed that the particle concentration uniformity in the cabin was good, and the repeatability error was less than 6%. The humidity range was controlled between 10% and 90%, and the methane concentration was uniform and controlled below 1%.
引文
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[3]袁维贵,褚福爱.煤矿瓦斯检测传感器的现状及发展趋势[J].煤炭科技,2012(4):99-100.
[4]高昊.基于光散射原理的矿用激光粉尘浓度传感器[J].煤矿安全,2016,47(3):98-100.
[5]金金,丁成,高凯.煤矿用激光甲烷传感器校准方法[J].中国计量,2018(5):114-115.
[6]王莹.提高光度计法可吸入颗粒物质量浓度测量系统的精度研究[D].南京:南京理工大学,2008.
[7]宋志强.光学甲烷测定器标准装置的测量不确定度评定[J].煤,2005(6):54-56.
[8]王黎明,刘动,陈枫林,等.雾霾模拟方法及其装置研究[J].高电压技术,2014,40(11):3297-3304.
[9]张鹏.湿度对粉尘浓度检测的影响规律及校正方法研究[D].重庆:重庆科技学院,2017.
[10]苟新宇,张晓明,李丽峰,等.矿井风流温湿度预测方法及应用[J].辽宁工程技术大学学报(自然科学版),2015,34(3):319-322.