管道型红外甲烷传感器在负压抽采管路中的检测技术研究  

Research on detection technology of pipeline type infrared methane sensor in negative pressure extraction pipeline

作　　者：董康宁 杨晋芳 DONG Kangning;YANG Jinfang(College of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China;The Suited(Beijing)Science and Technology Development Co.,Ltd.,Beijing 100083,China)

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京思优特科技发展有限公司,北京100083

出　　处：《煤矿安全》2021年第4期129-132,共4页Safety in Coal Mines

摘　　要：为解决煤矿井下瓦斯抽采过程中负压抽采管路中的瓦斯气体自然扩散到气室难度大,且需要有效滤水滤尘,同时抽采管路的负压变化也会对红外甲烷传感器测量数据产生影响问题,研究新型专用气路装置将传感器气室与抽采管路连接,同时在气室中内置红外探测敏感元件和压力采集元件,对瓦斯浓度和压力数据进行采集并建立压力补偿算法模型,进行瓦斯浓度测量值修正。结果表明:传感器气路装置可实现负压抽采管路中的瓦斯气体自然扩散到气室,压力补偿算法模型可消除抽采管路中负压对瓦斯浓度测量数值造成的影响。In order to solve the problem that the natural diffusion of gas in the negative pressure extraction pipeline to the gas chamber is difficult and need to filter water and dust effectively in the process of underground coal mine gas extraction, and the negative pressure change of the extraction pipeline will also affect the measured data of the infrared methane sensor, a new type of special gas path device is studied to connect the sensor gas chamber with the extraction pipeline, and the infrared detection sensing element and pressure acquisition element are built in the gas chamber to collect the gas concentration and pressure data and establish the pressure compensation algorithm model to correct the measured value of gas concentration. The results show that the gas path device of the sensor can realize the natural diffusion of the gas in the negative pressure extraction pipeline to the gas chamber, and the pressure compensation algorithm model can eliminate the influence of the negative pressure in the extraction pipeline on the gas concentration measurement.

关 键 词：瓦斯抽采 抽采管道 红外甲烷传感器 传感器气路装置 压力补偿 

分 类 号：TD676[矿业工程—矿山机电]