论文编号:ZD175 论文字数:27716,页数:51
摘 要
主卷扬控制系统是保证高炉正常连续生产的关键设备之一。在炼铁高炉的生产中，主令控制器是卷扬最为关键的核心控制设备，一旦上料的主卷扬发生故障维护及调整非常麻烦，将直接导致整个炼铁高炉生产的停滞，造成高炉上料中断，给炼铁生产带来重大经济损失。高炉炼铁生产过程的自动控制程度的高低，直接制约着铁水的产量和质量。因此高炉主卷扬是高炉炼铁的重要环节之一。高炉上料卷扬系统是炼铁生产中的关键设备，主要作用是将炼铁所需的各种原料源源不断地送到高炉内，保证高炉炼铁的正常需要，考虑到上料的速度、设备的备用要求等诸多因素，目前普遍选用单筒双电机双料车的卷扬系统。本文将对此进行分析和讨论。
介绍了在采用PLC和变频器实现高炉主卷扬料车常规控制的基础上，利用旋转编码器发出的脉冲信号构成位置反馈，实现料车的精确位移控制的智能主令控制器的应用情况。改变了原有用LK系列的机械式有触点主令故障率高的缺点。通过PLC程序设计实现料车加减速换速信号、到位信号的数字控制，提高了系统的可靠性和位置精度控制。本设计是基于PLC控制、组态软件监控显示、变频器调速的高炉配料自动控制系统，而系统以PLC控制为核心。本设计为4种原料的配料系统，PLC、变频器分别为西门子公司的S7-300和施耐德ATV71变频器。PLC程序的开发以西门子公司的Step7作为软件平台，采用了面向对象的程序设计技术，模块化的设计，从而使系统具有良好的可移植性和可维护性。
关键词：主卷扬，料车，上料，可编程控制器，位移智能主令控制器
Abstract
Hoist the main blast furnace control system is the guarantee for the normal production of one of the key equipment. Blast furnace in the production of the main winch controller is the core of the most critical control equipment, once the main winch on the expected failure of maintenance and adjustment is very troublesome, will lead directly to the blast furnace production of stagnation, resulting in BF Feeding disruption to the production of iron-smelting result in major economic loss. Iron making blast furnace production process of high and low degree of automation， molten iron directly restrict the quantity and quality. So the main blast furnace blast furnace iron making winch is one of the important links. BF expected winch system is the key to the production of iron-smelting equipment, primary role is to iron-smelting of raw materials required to continue to blast furnace, the blast furnace iron making guarantee the normal needs， taking into account the expected rate, Equipment reserve requirements and other factors, generally selected Dandong double-double motor vehicle winch system. This article will conduct analysis and discussion.
On the PLC in a blast furnace and converter to achieve the main winch control of conventional cars expected on the basis of a rotating encoder pulse a position feedback, expected to achieve the precise control of the displacement of the main controller of the smart application. LK used to change the original series of mechanical contact with the main shortcomings of the high failure rate. PLC program designed to achieve through the expected slowdown for cars and speed signals, the digital control signals in place and improve system reliability and location accuracy control. The design is based on the PLC control, configuration software monitoring display, Drives governor of BF ingredients automatic control system, and PLC control system as the core. The four kinds of raw materials for the design of the batching system, PLC, Siemens converter for the S7-300, SchneiderATV71.Feeding the AC drive system using the Siemens 6 SE70 vector-type converter and PLC combination to achieve. PLC program to the development of the Siemens Step7 as a software platform, using the object-oriented programming techniques, modular design, so that the system has good portability and maintainability.
Keywords：Master winch，Liu car，Feeding，PLC，The main displacement intelligent controller
目录
摘 要 1
Abstract 2
0引言 4
1 主卷扬工艺简介 6
1.1 上料系统概况 6
1.2 上料系统在高炉的地位与作用 7
1.3 基本工艺要求 9
1.4 设计要求 9
2 高炉卷扬控制系统 13
2.1 卷扬系统简介及工艺描述 13
2.2 控制方案 16
2.3 料车定位 20
2.4 高炉上料监视系统 23
3 系统软/硬件说明 28
3.1 变频器的简介及选型 28
3.2 PLC程序设计 33
4 设计图纸说明 46
4.1 主回路说明 46
4.2 控制回路及动作说明 47
结束语 49
谢 辞 50
参考文献 51
