What is the role of gas detectors in coal mines
1. What are the harmful gases underground in coal mines?
The main harmful gases in the air of mines include carbon monoxide, hydrogen sulfide, sulfur dioxide, nitrogen dioxide, and ammonia.
Usually present in poorly ventilated old alleys, goafs, and near fire areas, as well as in the airflow during explosions of gun smoke, biogas, and coal dust. When the concentration of these gases reaches a specific value, it can cause harm to human health, and some may even explode and endanger the safety of workers and mines.
2. What are the sources of harmful gases underground?
The sources of carbon monoxide underground are underground fires, gas and coal dust explosions, and blasting work. Due to the rapid production of a large amount of carbon monoxide in gas and coal dust explosions, it poses the greatest harm to people. The source of underground hydrogen sulfide is the decay of pit wood, the decomposition of sulfur-containing minerals in contact with water, the discharge of water from old alleys or from coal and surrounding rocks, and blasting work.
The source of underground sulfur dioxide is slow oxidation or natural generation of sulfur-containing minerals, which are naturally released from coal or surrounding rock and generated by explosion in sulfur-containing minerals. The source of underground nitrogen dioxide is usually nitric oxide generated after blasting, which combines with oxidation in the air to form nitrogen dioxide. The underground ammonia gas comes from blasting, water extinguishing, etc., and some rock formations also release ammonia gas.
Portable single gas detector is an instrument that can continuously detect the concentration of oxygen and toxic and harmful gases in the working environment. The detector detects gas concentration through natural diffusion and adopts imported sensors, which have good sensitivity and excellent repeatability; The instrument adopts embedded microcontroller technology, with simple menu operation, complete functions, high reliability, and multiple adaptive capabilities; Broken code LCD display, intuitive and clear; The compact and beautiful design not only makes you love it but also makes it easier for you to move and use.
