发布时间 : 星期三 文章清洗废水治理工程控制系统设计更新完毕开始阅读fbcba727a300a6c30c229fda
摘要
摘 要
课题主要通过PLC程序仿真对制药废水处理自动化控制，程序具备手动/自动控制功能，实现对提升泵，风机房空压机的变频工频控制，对加药泵，污泥回流泵的智能控制，自动控制过程中，主要是采集DO仪检测仪变送回开关量信号，液位仪变送回开关量信号，PH检测仪开关量信号，实现对空压机、提升泵、加药泵（NaOH）自动控制、空压机运行过程中，通过PLC时间控制程序实现对空压机时间的切换。
设计中完成了配电系统设计，PLC控制电路的设计，PLC控制程序的设计，并进行了程序仿真，通过仿真实现了预期的控制要求。
PLC提高了自动控制的可靠性,不仅减轻了工人的劳动强度,而且提高了制药污水处理的运行效率,实现了污水厂生产管理的科学性。不但使制药公司的污水得到了达标排放，而且一部分污水能得到了循环利用。
关键词: 废水处理；自动化控制；PLC控制
Abstract
Abstract
The topic mainly uses PLC simulation procedure to automatic control pharmaceutical wastewater treatment, procedures have manual / automatic control functions, to achieve lift pump, air compressor in ventilator room frequency conversion and power frequency control, intelligent control the dosing pump and return sludge pump. In the process of automatic control, is mainly to collect DO Meter Tester turned back to the switch signal, liquid level instrument variable back to the switch signal, switch signal of the PH tester , for air compressor, lift pump, dosing pump ( NaOH ) automatic control. In the operation of air compressor, by the PLC time control program to switch air compressor time.
Topic design power distribution system , PLC control circuit, PLC program, and carried out the process simulation, by the simulation to achieve the expected control requirements.
PLC improves the reliability of automatic control, not only reduces the labor intensity of workers, and improve the pharmaceutical wastewater treatment efficiency, realized sewage factory production management. Not only make the pharmaceutical company's sewage is discharged, and a part of the sewage can be recycled..
Key words: Waste water treatment; automatic control; PLC control
目录
目录
第1章 绪论 ................................................................................................................................. 1 1.1制药污水处理的必要性 .................................................................................................... 1 1.2制药污水治理的现状 ........................................................................................................ 1 1.3本课题的研究背景及意义 ................................................................................................ 1 1.4 课题设计的方案及技术路线 ............................................................................................ 3 第2章 硬件选择及控制电路图设计 ......................................................................................... 6 2.1污水管线控制工艺流程图 ................................................................................................ 6 2.2污泥管线控制工艺流程图 ................................................................................................ 7 2.3药剂管线控制工艺流程图 ................................................................................................ 8 2.4 硬件选择 ............................................................................................................................ 8 2.4.1 PLC的选择 ................................................................................................................. 8 2.4.2扩展模块的选择 ....................................................................................................... 10 2.4.3中间继电器的选择 ................................................................................................... 11 2.4.4变频器的选择 ........................................................................................................... 12 2.4.5电动机的选择 ........................................................................................................... 13 2.4.6电机保护器的选用 ................................................................................................. 13 2.5控制电路的设计 .............................................................................................................. 15 2.5.1故障切换电路的设计 ............................................................................................... 15 2.5.2配电系统设计 ........................................................................................................... 17 第3章 PLC控制电路程序 ........................................................................................................ 19 3.1 PLC编程流程图的设计 ................................................................................................... 19 3.1.1总体流程设计 ........................................................................................................... 19 3.1.2 污水提升泵的PLC编程流程图 .......................................................................... 19 3.1.3接触氧化池系统工作流程图 ................................................................................... 21
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目录
3.1.4污泥回流系统流程图 ............................................................................................... 22 3.2 PLC继电器端子接线及端子功能 ................................................................................... 23 3.3 PLC控制程序 ................................................................................................................... 26 第4章 结论 ............................................................................................................................... 37 致谢 ............................................................................................................. 错误！未定义书签。 参考文献 ..................................................................................................................................... 39
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