煤矿局部通风机瓦斯浓度自动调节及节能控制研究

Research on Gas Concentration Automatic Regulation and Energy Saving Control of Local Ventilators in Coal Mines

针对煤矿采掘工作面瓦斯突涌易引发瓦斯爆炸、煤尘超限、其他有毒有害易燃易爆的安全问题以及局部通风机效率低等问题,分析了瓦斯浓度、碳化物浓度等变量与通风机通风量的关系。设计了煤矿局部通风机瓦斯浓度自动调节与节能控制系统,分析了系统的节能控制原理。采用智能化的模糊控制算法进行变频节能控制,利用MATLAB中的模糊控制软件包进行了仿真设计。基于嵌入式技术设计了系统的硬件结构,并设计了系统的控制软件。对系统进行了验证性试验,结果表明:系统可及时调节局部通风机通风量,降低巷道有害气体浓度,降低了煤矿安全事故的发生,减少了局部通风机电能浪费。

With respect to safety problems confronting driving working faces in coal mines,such as gas explosion easily caused by gas outburst,excessive amount of coal dust,other toxic,harmful,flammable and explosive cases as well as low efficiency of local ventilators,the relationship between variables,such as gas concentration and carbide concentration,and ventilation volume of the ventilator was analyzed,and an automatic gas concentration regulation and energy saving control system was designed for local ventilators used in coal mines.The principle of energy saving of the system was analyzed and an intelligent fussy control algorithm was adopted to realize variable frequency energy-saving control.Simulation design was completed by use of MATLAB fussy control software,system hardware structure was designed based on the embedded technology,and system control software was also designed.Verification tests were made on the system,and test results indicated that this system could timely regulate the ventilation volume of local ventilators and reduce the concentration of harmful gases in the roadway,thus lowering the occurrence of safety accidents in coal mines and reducing the waste of electric energy of local ventilators.