毕业设计-基于PLC 控制的水泵系统设计-.docx

毕业设计中图分类号：TP273基于PLC控制的水泵系统设计专业名称:电气自动化技术学生姓名:导师姓名:职称：讲师焦作大学二○一三年 12 月中图分类：TP273 密级：无UDC：单位代码：基于PLC控制的水泵系统设计The Water Pump System Based on PLC Control Design姓　 名蒋玉林学　　制3年专 业电气自动化技术研究方向自动化技术导　 　师刘晓莉职　　称讲师论文提交日期2013.12.28论文答辩日期2013.1.2焦作大学摘要近年来我国中小城市发展迅速，集中用水量急剧增加。在用水量高峰期时供水量普遍不足，造成城市公用管网水压浮动较大。由于每天不同时段用水对供水的水位要求变化较大，仅仅靠供水厂值班人员依据经验进行人工手动调节很难及时有效的达到目的。这种情况造成用水高峰期时水位达不到要求，供水压力不足，用水低峰期时供水水位超标，压力过高，不仅十分浪费能源而且存在事故隐患（例如压力过高容易造成爆管事故）。随着社会的发展和进步，城市高层建筑的供水问题日益突出。一方面要求提高供水质量，不要因为压力的波动造成供水故障；另一方面要求保证供水质量的可靠性和安全性，在发生火灾时能够可靠供水。恒压供水保证了供水的质量，以PLC为主机的控制系统满足了系统的控制功能，提高了系统的可靠性。关键词：水压 供水 恒压供水PLC AbstractSmall and medium-sized cities in our country has developed rapidly in recent years, focus on water consumption has increased dramatically. When the peak of the insufficiency of water supply in water, resulting in urban public pipe network pressure is bigger. Due to the different period of time every day change of water level requirements for water supply is bigger, just by factory staff on duty for manual adjustment on the basis of experience of water supply is very difficult to achieve the timely and effective. This situation caused water peak water level can not meet the requirements, insufficient water pressure, excess slack period when the water level, water pressure is too high, not only is a waste of energy and accidents (e.g., high pressure pipe explosion accident caused easily).Along with societys development and progress, city high-rise building water supply problem increasingly prominent. On the one hand, improve water quality, dont because of the pressure fluctuation in water supply failures; On the other hand requirements to ensure the quality of water supply reliability and safety, reliable water supply in the fire. Constant pressure water supply to ensure the quality of the water, with PLC as the host, the control function of the control system can meet the system to improve the reliability of the system.Keyword:Water pressure co