锅炉进水系统及输煤电气的PLC控制.doc

山东大学

毕业设计(论文)
题目:锅炉进水系统及输煤电气的PLC控制
专业: 机电一体化
学生姓名: 徐加利
准考证号: 029107200761
指导老师:_________________________
毕业设计(论文)时间:2009年 6月 30日~ 8月 10日
锅炉进水系统及输煤电气的PLC控制
摘要
本论文基于OMRON公司的CPMIA PLC,设计了大型锅炉供暖输煤控制电气系统。各机械之间均设计安全的联锁保护控制功能:系统中的输煤电机启停是有严格控制顺序的,彼此间有相应的联锁互动关系,当启动某台输煤设备时,从该设备下面流程的最终输煤设备开始向上逐级启动,最后才能使该台设备启动;当停止某台输煤设备或某台设备故障时,从该设备上面流程的源头给煤设备开始向下逐级停车,最后才能使该台设备停止。这样,就保证了上煤传输的正常运行在线控制煤流量,避免了皮带上煤的堆积,也保护了皮带。PLC控制系统硬件设计布局合理,工作可靠,操作、维护方便,工作良好。用 PLC输煤程控系统,不但实现了设备运行的自动化管理和监控,提高了系统的可靠性和安全性,而且改善了工作环境,提高了企业经济效益和工作效率。因此PLC电气控制系统具有一定的工程应用和推广价值。

关键词:锅炉; PLC电气控制系统; 在线控制煤流量
“Abstract”
This paper takes OMRON CPM1A PLC as designing the some large boiler provide warm losing the coal control electricity system can work reliably with property of easy operation and maintenance. The safety locks protection control function:In the system of losing the coal electrical engineering have the strict control in moving and stopping, each other has the homologous lock interaction relation, being start some set to lose the coal equipments, from that equipments below process of end lose the coal equipments start heading up pursue class start, then can make finally that set equipments start;When the stop some set loses the coal equipments or some set equipmentses to break down, from that equipments up the source head of the process starts get down for the coal equipments to pursue the class to park the car, then can make that set equipments stop , guaranteed the normal movement that last coal deliver, avoid the leather belt up the pile up of coal, also protected the leather belt. Lose the coal distance to control the system with the PLC, not only carried out the automation management that equipments circulate and supervision, raise the credibility and safeties of the system, but also improved the work environment, raise the business enterprise economic performance and work efficiencies. therefore the system bears certain practical applying significance and popularizin