文档介绍：单位代码 01
学号 100119064
分类号 TP273+.2
密级
毕业设计说明书
电锅炉温度控制系统的设计
院(系)名称
信息工程学院
专业名称
测控技术与仪器
学生姓名
邓继文
指导教师
吴娟
2014年4月25日
电锅炉温度控制系统的设计
摘要
电锅炉温度智能控制系统在工业生产和科研工作中占有重要的地位。锅炉汽包燃烧系统是工业蒸汽锅炉安全、稳定运行的重要指标。温度过高,会使蒸汽带水过多,汽水分离差,使后续的过热器管壁结垢,传热效率下降,过热蒸汽温度下降,严重时将引起蒸汽品质下降,影响生产和安全;温度过低又将破坏部分水冷壁的水循环不能满足工艺要求,严重时会发生锅炉爆炸。尤其是大型锅炉,一旦控制不当,容易使汽包满水或汽包内的水全部汽化,造成重大事故。因此,在锅炉运行中,保证温度在正常范围是非常重要的。
基于单片机技术实现的电锅炉温度控制系统主要由温度检测电路、温度控制电路、温度显示电路三个部分组成。在本次设计中,选用符合测量温度范围要求的热电偶温度传感器来实现数据采集,用仪表放大电路对电压信号进行放大,实现对温度的检测和信号的传输;用单片机对所采集的数据进行处理后,再进行相应的控制,从而实现对温度的控制;采用LCD1602液晶显示器将处理的数据进行实时显示。然后根据设计电路进行了实际制作和测试分析,达到了预期的要求。
关键词:单片机,热电偶温度传感器,LCD,MAX6675
The Design of the Electric Boiler Temperature Control System
Author:Deng JiWen
Tutor:Wu Juan
Abstract
Annealing temperature control system in industrial production and scientific research occupies an important bustion system of boiler steam drum is industrial steam boiler safe and stable operation of the important is too high, can make the steam with water too much, separation of poor, make the follow-up of superheater tube wall scaling, heat transfer efficiency drops, superheated steam temperature drop, serious when will cause steam quality to drop, affect the production and safety; Temperature is too low will damage part of the wall of the water cycle can't meet the technological requirements, serious happens when the boiler large boiler, once the improper control, easy to make all of the water in the water or steam drum drum with vaporization, cause serious accident. Therefore, in boiler operation, it is very important to ensure that the temperature in the normal range.
Based on single chip puter technology to realize the electric boiler temperature control system is posed of the temperature detection circuit, temperature control circuit, display circuit of three this design, choose to meet the requirements of measuring temperature range thermocouple temperature sensor to achieve data acqu