Burning type catalyzing gas sensors are the devices of the gas monitoring system in coal mines, which realizes the auto on-off of the ventilation system based on detecting the gas volume fraction.

热燃烧式催化瓦斯传感器是煤矿矿井瓦斯监控系统的核心部件，用于检测瓦斯体积分数，实现风电闭锁功能。

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The natural gas supply control system, structure and function of burning frame as well as temperature control procedure of furnace of the annular baking furnace are introduced.

介绍了环式焙烧炉天然气供气监控系统、燃烧架的结构与功能及加热炉室温度控制过程。

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The allowable shut-off time of fast shut-off valve is calculated by inferred formula and selection way of fast shut-off valve in the gas supply system of gas burning boiler is summarised.

通过推导公式计算快速切断阀的允许切断时间，并总结燃气锅炉供气系统中快速切断阀的选择方法。

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