PLC控制恒压供水设计水泵控制.docVIP

基于PLC控制恒压供水的设计 ——水泵控制 学生姓名 XXX 所 在 系 电子工程系 专业名称 自动化 班 级 XXX 学 号 XXX 指导教师 XXX XXXXXXXXXXX XXX 基于PLC控制恒压供水的设计 ——水泵控制 学生：XXX 指导教师：XXX 内容摘要：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：PLC 恒压供水 Based on PLC control constant pressure water supply design water pump control Abstract：In recent years our country small and medium-sized town and cities development was rapid, centralized water consumption sharp growth. When water consumption peak time volume of diversion universal insufficient, causes the urban public pipe network hydraulic pressure fluctuation to be big. Because the different time interval water used is every day big to the water supply water level request change, depends merely for the water works attendants to carry on the manual manual regulation based on the experience to be very difficult effective to serve the purpose promptly. This kind of situation creates when the water used peak the water level cannot meet the requirements, the water supply pressure is insufficient, when water used trough time supplies water level exceeding the allowed figure, the pressure is excessively high, not only wastes the energy moreover to have the accident potential (e.g. pressure to be excessively high easily to create cartridge igniter accident). Along with societys development and the progress, the urban high-rise constructions water supply question is day by day prominent. On the one hand requests to improve the water supply quality, does not want, because the pressure fluctuation creates the water supply breakdown; On the other hand the request guarantee water supply qualitys reliability and the security, in has time the fire can supply water reliably. In v