基于PLC的尿素成品传送控制系统的设计与实现

发布时间：2018-04-28 01:23

  本文选题：PLC + MCGS组态　； 参考：《河北工业大学》2015年硕士论文

【摘要】：大化肥行业尿素成品包装线中电气设备纷繁复杂,种类繁多。其中栈桥皮带运输和散装库耙料机是其中最重要的大型电气设备。它们的运行情况关系到包装设备能否正常运行。经过多年的连续生产运行,设备陈旧老化,元器件备品备件匮乏,这些因素经常危及自动化生产的连续运转。随着上世纪末21世纪初,微机控制技术及变频器技术在工业控制中广泛推广应用,PLC应用技术体现出了它特有的优越性。本文主要是应用西门子S7-200、OMRON C系列PLC技术及昆仑通态的MCGS(Monitor and Control Generated System,监测与控制产生系统)组态软件对尿素成品运输生产线电气控制进行技术改造。本次技改技措由PLC编程控制替代了建厂初数目繁多的继电器-接触器控制,消除了设备潜在的故障隐患。栈桥皮带运输联锁实现了PLC从站控制,而在耙料机监控室中实现了上位机实时监控,耙料机大车操作室内安装人机交换接口—触摸屏控制;将耙料机大车行走绕线式电动机串电阻箱调速改为鼠笼式电动机的变频调速;解决了耙料机自动纠偏的校正难题;重新调整了耙料机自动控制中凸轮控制器的动作程序匹配关系。从而改善了操作工的工作环境,提高了设备运行可靠性和自动化程度,降低了维修费用,为保障设备的长周期安全运行提供了强有力技术支持。建立一个尿素成品运输生产线的计算机集散控制系统,栈桥皮带运输PLC和耙料机控制PLC分别作为两个子系统,通过PROFIBUS-DP网连接,建立一个总控室,采用上位机实现总体监控。
[Abstract]:Large chemical fertilizer industry urea finished product packaging line in the complex electrical equipment, a variety of. Among them the trestle belt conveyance and bulk storage rake machine is one of the most important large-scale electrical equipment. Their operation is related to the normal operation of packaging equipment. After years of continuous production and aging of equipment and lack of spare parts of components, these factors often endanger the continuous operation of automatic production. With the end of the last century and the beginning of the 21st century, microcomputer control technology and frequency converter technology are widely used in industrial control, and the application of PLC technology embodies its unique advantages. This paper mainly uses Siemens S7-200 OMRON C series PLC technology and Kunlun MCGS(Monitor and Control Generated System, monitoring and control generation system configuration software to carry on the technical transformation to the urea finished product transportation production line electrical control. In this technical innovation, the PLC programming control replaces the numerous relay-contactor control in the initial construction of the plant, and eliminates the hidden trouble of the equipment. The trestle belt transportation interlock realizes the PLC slave station control, but realizes the upper computer real time monitoring in the Harrow material machine monitor room, and installs the man-machine exchange interface-touch screen control in the Harrow truck operation room; In this paper, the speed regulation of series resistance box is changed into the frequency conversion of squirrel cage motor, which solves the problem of correcting the deviation of the raking machine. The program matching relation of cam controller in automatic control of rake machine is adjusted. Thus the working environment of the operators is improved, the reliability and automation of the equipment are improved, the maintenance cost is reduced, and the strong technical support is provided for ensuring the long period safe operation of the equipment. A computer distributed control system for urea finished product transportation production line was established. The trestle belt transport PLC and the Harrow machine control PLC were used as two subsystems respectively. A master control room was set up through the PROFIBUS-DP net, and the overall monitoring was realized by the upper computer.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ441.41;TP273
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本文编号：1813168