煤尘含水率对测尘仪测量结果的影响研究

发布时间：2018-08-25 13:38

【摘要】：在不同煤尘含水率条件下,对β射线法与摩擦电法测尘仪测量煤尘浓度的结果进行了对比研究,实验结果表明:随着给定煤尘浓度的增大,β射线法与摩擦电法测尘仪测量结果的绝对误差都逐渐增大;在煤尘浓度一定的条件下,随着煤尘含水率的增加,两种测尘仪器的煤尘浓度测量值越偏离给定煤尘浓度值,且煤尘含水率对摩擦电法测尘仪的测量结果影响更大;当煤尘含水率低于3.5%时,摩擦电法测尘仪测量结果偏离给定煤尘浓度值较小,而当煤尘含水率高于3.5%时,β射线法测尘仪测量结果偏离给定煤尘浓度值较小。
[Abstract]:Under the condition of different moisture content of coal dust, the results of measuring coal dust concentration by 尾 ray method and friction electric dust meter are compared and studied. The experimental results show that the absolute errors of the measured results of the 尾 ray method and the friction electric method increase gradually with the increase of the given coal dust concentration, and the absolute error increases with the increase of the moisture content of the coal dust under the condition of the given coal dust concentration. The measured value of coal dust concentration of the two kinds of dust measuring instruments deviates from the given coal dust concentration value, and the moisture content of coal dust has more influence on the measurement result of friction electric dust meter, when the moisture content of coal dust is lower than 3.5%, When the moisture content of coal dust is higher than 3.5, the measured value of 尾 ray dust meter deviates from the given coal dust concentration.
【作者单位】：煤矿瓦斯与火灾防治教育部重点实验室;中国矿业大学安全工程学院;
【分类号】：TD714.3

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