SHL燃煤锅炉动力部分PLC控制系统设计.doc

摘 要 随着工业自动化程度的提高和锅炉工艺水平的日益完善，工业锅炉自动化控制从简单地DDZ-Ⅲ系统仪表、计算机控制系统发展到目前所采用的触摸屏+PLC显示控制系统。对于日常生活中供热供水的燃煤锅炉房，普遍采用PLC（可编程控制器）来控制锅炉运行所需的各种动力设备。 本文采用先进的PLC控制技术，针对民用锅炉房中燃煤锅炉的引风机、一次风机、二次风机、给水泵电机、补水泵电机、给煤电机、炉排电机等动力设备设计出一套合理而实用的控制方案，能够实现各种电机的顺序启停以及动力设备的故障报警和保护功能，最大限度的降低锅炉房的安全隐患和经济损失；同时本文还对对锅炉房的供配电照明工程进行了详尽的规划设计。本设计还采用三菱PLC仿真软件对动力部分的控制方案进行模拟，有效地提高了控制程序的可靠性和完整性。 关键词：锅炉动力控制，PLC，供配电照明 ABSTRACT With the improvement in the level of industrial automation and the level of the boiler process improvement, industrial automation and the control of the boiler simply from DDZ-Ⅲ system instrumentation, computer control system developed to touch -screen + PLC Control System currently. As daily water supply for coal-fired heating boiler room, PLC programmable logic controller is commonly used to control a variety of power equipment required in boiler running. In this paper, advanced PLC control technology is used in control of the suction fan, a fan and second fan, the pump motor, pump motor up to the coal machine of coal-fired boiler in the boiler room, the design of electric power equipment such as a set of reasonable control and practical proposals that can achieve the order of start and stop all kinds of electrical power equipment, as well as fault alarm and protection functions, the reduction in the boiler room of the security risks and economic losses at the least; At the same time, this article is also about a boiler room for lighting distribution project planning and designing. The simulation designing of power control part is realized by the simulation software of Mitsubishi PLC .it could improve the reliability and integrity of control procedure. KEY WORDS: power control of boilers,PLC,power distribution and lighting 目 录 摘 要 1 ABSTRACT 2 目 录 3 第一章 锅炉控制的概念和发展前景 6 1.1锅炉控制的基本概念 6 1.2锅炉控制技术的现状与发展 6 1.3本设计采用的控制方案 8 1.3.1 PLC的基本概念 8 1.3.2 PLC控制的优势 9 第二章 锅炉动力设计的内容和原始资料说明 10 2.1 SHL型锅炉的结构分析 10 2.2锅炉动力设备的分析介绍 10 2.2.1引风机 10 2.2.2 一、二次风机 12 2.2.3 给、补水泵 14 2.2.4 炉排链条和给煤机 15 2.3锅炉控制中保护的对象