摘要
局部通风机用于矿山巷道掘进通风时,稳定、可靠、节能、降噪是其基本要求的目标。局部通风机自动控制在煤矿节能高效安全运行中具有重要作用。根据煤矿现场实际情况,分析了局部通风机的风量和掘进巷道内的瓦斯浓度间的关系。采用西门子S7-200PLC的PID控制功能控制变频器,基于PLC实现了局部通风机随煤矿掘进工作面瓦斯浓度变化的自动变频调速。系统稳定、可靠,具有故障诊断、故障报警等功能。在保证了煤矿的安全生产的同时,达到了节能、降低耗材、自动控制的目的。
When local ventilator is used in the process of mine roadways driving,its basic requirements are stability,reliability,energy saving,and noise reducing.Its automatic control is very important for efficient and safe production.Based on the field situation,the relationship between wind volume of the local fan and gas concentration is studied.With PID control converter(S7-200PLC),the automatic frequency-speed regulation is realized in accordance with the gas concentration variation based on PLC.The system has stability,reliability,failure diagnosis,failure alarm,and other functions.Besides,energy conservation,low cost and automatic control are achieved.
出处
《山西煤炭》
2012年第1期67-69,共3页
Shanxi Coal
关键词
PLC
PID闭环控制
局部通风机
变频器
PLC
PID closed-loop control
local ventilator
frequency converter
