基于PLC的煤矿瓦斯浓度监控系统.docx

洛阳理工学院毕业设计（论文） 基于?PLC?的煤矿瓦斯浓度监控系统 摘?要 煤矿矿井通风系统能否正常工作与矿井内工作环境条件，生产效率，安全生 产密切相关。随着我国政府对各行各业安全生产监管力度的不断加大，尤其对煤 矿生产的安全要求越来越高，对煤矿矿井通风系统进行技术改造，提高其运行稳 定性，可靠性，节能性等势在必行。 本系统将三菱?PLC?与变频器结合起来，采用瓦斯浓度和井下压力为主要参数， 实现对矿井通风机的工作过程和运转速度的有效控制，从而达到矿井下通风安全、 稳定，同时使得资源最大的利用。并且?PLC?对通风机有过热保护、故障报警、机 械故障和瓦斯高浓度报警等功能。为了矿井通风的安全节能技术改造提供新的技 术。 关键词：PLC,?瓦斯浓度,?传感器，通风机 I 洛阳理工学院毕业设计（论文） Coal-mine?Gas?Concentration?Monitoring?System?based?on?PLC ABSTRACT The?working?conditions,?the?normal?work?of?mine?ventilation?system?and?whether the?coal?mine?production?efficiency,?safety?production?is?closely?related?to.?Along?with the?Chinese?government?on?all?kinds?of?production?safety?supervision?increased, especially?for?coal?mine?production?safety?requirements?more?and?more?high,?the technical?reformation?of?coal?mine?ventilation?system,?improve?the?operation?stability, reliability,?energy?saving?and?so?be?imperative. This?system?will?combine?with?Mitsubishi?PLC?inverter,?the?concentration?of?gas and?down?hole?pressure?as?the?major?parameter,?achieve?effective?control?of?working process?and?the?running?speed?of?the?mine?ventilator,?so?as?to?achieve?the?mine ventilation?and?safety,?stability,?and?makes?use?of?the?most?resources.?And?PLC overheating?protection,?fault?alarm,?fault?and?high?gas?concentration?alarm?function?of fan.?Provide?a?new?technology?for?technological?transformation?of?mine?ventilation?and safety?and?energy?saving KEY?WORDS: PLC，Gas，Transducer，ventilate II 洛阳理工学院毕业设计（论文） 目　录 前　言?.......................................................................................................... 1 第? 1? 章? 瓦斯相关介绍?................................................................................ 2 1.1? 瓦斯气体?......................................................................................... 2 1.1.1? 瓦斯气体性质?....................................................................... 2 1.1.2? 瓦斯气体的爆炸?................................................................... 2 1.1.3? 本课题研究的意义?......