基于PLC高楼恒压供水系统设计及仿真(含梯形图)(论文12000字)
摘 要
建设节约型社会。居民生活用水具有时间集中,可靠性低,使水管中的压力始终保持在合适的范围。为此采用变频器与可编程操控器（PLC）构成操控系统,提出用自来水水压供水与水泵提水相结合的方法,并配以变频器、PLC、压力传感器、溢流阀等将管网的压力,并自动调整泵组的运行台数,完成供水压力的闭环操控,完成供水压力的闭环操控,合理开发、节约利用和有效保护水资源是一项艰巨任务。
关键词：变频器 PLC 恒压供水
Abstract
Build a conservation-minded society, reasonable development, economical utilization and effective protection of water resources is a difficult task. Residents living water concentration with time, the characteristic of the large changes in water use, and use the original water supply system is high cost, low reliability, waste water and pipe network system to improve the problem. For frequency converter and a programmable controller (PLC) control system, optimizing the control speed regulating operation of pumps, automatic adjust pump group run the Numbers and complete supply pressure closed loop control, put forward with the combination of tap water and water pressure water pump water way, and with a frequency converter, PLC, pressure sensor, the overflow valve, such as the pipe network pressure, through the pressure sensor data to PLC, PLC control pump speed running, and automatically adjust pump group run the Numbers and complete supply pressure closed-loop control, to keep the pressure in the pipe is always in the right range. The advantage of PLC constant pressure water supply when network flow changes, can achieve a stable water supply pressure and energy saving, safety, high quality supply, etc.
Key words: Frequency converter PLC Constant pressure water supply
目录
1 绪论 1
1.1 研究背景与意义 1
1.2 变频恒压供水的现况 1
1.2.1 国内外变频供水系统现状 1
1.2.2 变频供水系统应用范围 1
1.3 主要研究内容 2
2 系统的理论分析及硬件设计 4
2.1 变频恒压供水系统的理论分析 4
2.1.1 电动机的调速原理 4
2.1.2 变频恒压供水系统的节能原理 4
2.1.3 水泵的工作原理 5
2.2 恒压供水系统的能耗分析 6
2.3 供水操控系统的硬件设计 7
2.3.1 操控系统中传感器的选择 7
2.3.2 操控系统中变频器的选择 7
2.3.3 变频恒压供水系统的操控方案 9
2.3.4 供水装置的选择准则 10
2.4 PLC的接线图与操控电路图 11
2.4.1 I/O点的统计 11
2.4.2 PLC选型的基本准则 12
2.4.3 I/O的分配 12
2.4.4 PID参数的预置 14
3 供水操控系统软件的设计 15
3.1 操控系统软件的流程 15
3.1.1 PLC程序 15
2.1.2 程序中使用的继电器 15
3.2 编程软件的简单介绍 16
3.3 恒压供水系统梯形图的设计 17
4 系统综合调 18
4.1 程序的仿真与调试 18
4.1.1 仿真软件的简介 18
4.1.2 恒压供水系统程序的仿真调试 18
4.2 恒压变频供水系统的WinCC界面设计 20
5 总结与期望 26
5.1 总结 26
5.2 展望 26
参考文献 28
附录 30
附录A 30
附录B 33