基于S7-1200的瓦斯智能混配系统设计与工艺技术研究
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摘要
为了有效提高打牛厂煤矿抽采的低浓度瓦斯利用率,提升瓦斯发电站经济效益,基于西门子S7-1200PLC控制系统,研发出高低浓度瓦斯智能混配系统。介绍了高低浓度瓦斯智能混配系统的主要功能及其结构组成,以及智能混配系统的关键技术设备和工艺控制原理。智能混配系统通过自动监测、分析高低浓度瓦斯的流量、压力、浓度等主要参数的变化规律,自动调节低浓度瓦斯混配量。应用结果表明:该智能混配系统混配的瓦斯浓度均匀稳定,瓦斯发电机组运行高效可靠,同时压力保护装置不会造成瓦斯抽采泵"憋压",对瓦斯抽采泵站安全运行无影响。
In order to effectively improve utilization of low concentration gas in Daniuchang Coal Mine and improve the economic benefits of gas power stations,based on Siemens S7-1200 PLC control system,an intelligent mixing system of high and low concentration gas was developed,the main function,structure,key technical equipment and process control principle of it were introduced. The intelligent mixing system can automatically adjust the mixing amount of low concentration gas by automatically monitoring and analyzing the change rules of flow,pressure,concentration and other main parameters of low-concentration gas. The application results show that the gas concentration of the intelligent mixing system is uniform and stable,and the gas generator set operates efficiently and reliably,at the same time,the pressure protection device will not cause the gas extraction pump to"suppress"and has no influence on the safe operation of the gas extraction pump station.
In order to effectively improve utilization of low concentration gas in Daniuchang Coal Mine and improve the economic benefits of gas power stations,based on Siemens S7-1200 PLC control system,an intelligent mixing system of high and low concentration gas was developed,the main function,structure,key technical equipment and process control principle of it were introduced. The intelligent mixing system can automatically adjust the mixing amount of low concentration gas by automatically monitoring and analyzing the change rules of flow,pressure,concentration and other main parameters of low-concentration gas. The application results show that the gas concentration of the intelligent mixing system is uniform and stable,and the gas generator set operates efficiently and reliably,at the same time,the pressure protection device will not cause the gas extraction pump to"suppress"and has no influence on the safe operation of the gas extraction pump station.
引文
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[3]龙伍见.我国煤矿低浓度瓦斯利用技术研究现状及前景展望[J].矿业安全与环保,2010,37(4):74-77.
[4]黄盛初,刘文革,赵国泉.中国煤层气开发利用现状及发展趋势[J].中国煤炭,2009,35(1):5-10.
[5]周福宝,李宽让.乌兰煤矿瓦斯综合发电技术可行性论证[J].西北煤炭,2007(4):3-5.
[6]赵玉龙.煤层气发电可行性研究[J].西北煤炭,2011(7):150-152.
[7]王广宏.基于瓦斯氧化技术的井筒加热系统[J].煤矿安全,2017,48(4):107-110.
[8]李磊.高河煤矿瓦斯蓄热氧化电站设计及运行效果分析[J].煤炭工程,2016,48(7):19-21.
[9]张玉明.低浓度瓦斯混配技术在乏风氧化中的应用[J].矿业安全与环保,2015,42(4):40-43.
[10]逄锦伦.动态连续混气系统均匀度检测方法探讨[J].矿业安全与环保,2018,45(3):112-115.
[11]逄锦伦,李杰,徐鹏.一种基于Lab VIEW的瓦斯焚烧综合监控系统[J].矿业安全与环保,2014,41(6):33-35.
[12]谭凯,郭清华,张远征,等.分布式多点激光甲烷检测系统研究[J].工矿自动化,2017,43(10):65-69.
[13]周海坤.基于TDLAS的激光甲烷遥测技术[J].煤矿安全,2015,46(7):113-115.
[14]王祖迅.西门子CP340模块与矿用监控分站通讯实现[J].自动化与仪器仪表,2016(5):127-129.
[15]张堃,牟少芳,刘晓杰,等.STMZET6与S7-1200自定义通信协议实现串行通信[J].工业控制计算机,2017,30(12):104-105.
[16]张燎,薛岩,金佛荣.基于S7-1200PLC的中央空调控制系统设计[J].陇东学院学报,2013,24(5):19-22.
[17]邓绍华.基于PLC的蒸煮锅PID温度控制应用[J].广东科技,2013,22(10):183-184.