2m变频离心选矿机控制系统研究

发布时间：2018-02-27 08:41

本文关键词： 2m离心选矿机变频调速 PLC 人机界面　出处：《昆明理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：离心选矿机是重选领域中一种非常重要的选矿设备。重力选矿就是对所采集到的相应矿物原料,根据其矿物的物理性质、物理化学性质和化学性质的不同特征,筛选出有用矿物的过程。离心选矿机由于引入了离心力,使得矿料的分选效果和效率被大大提升,因此它在选矿领域被广泛而大量地运用。本课的研究是对一选矿厂扩建项目中使用的选矿离心机的控制系统进行改造,在整个项目中总共使用32台选矿离心机,与同类情况相比,其数量可观。为提高单位时间的处理量,提高选矿效率,选用现有使用中转鼓最大的2m选矿离心机。为实现高效、稳定控制,结合当前控制系统技术发展的现状及生产的实际需要,基于PLC变频技术和HMI技术,采用施耐德ModiconM340 PLC对卧式离心选矿机进行控制,人机界面Magelis GXO进行动态监控,设计了2m离心机“触摸屏+可编程控制器+变频器+网络+控制对象”的控制系统,通过实际验证,该控制系统能实现稳定高效生产,很大程度的提高了经济效益。为获取控制系统所需的关键参数,本文对2m变频离心选矿机的基本工作原理和分选原理及发展现状进行了研究,并通过实验,获取影响选矿效果的关键参数信息。为满足项目使用的要求同时控制成本,本文采用施耐德施耐德产品ModiconM340可编程控制器,针对32台离心机两地控制要求,按适度集中的原则设计控制系统,采用一拖四的设计方案,即一个控制柜中安装一套可编程控制器,一套可编程控制器控制4台选矿离心机。同时采用Modbus现场总线交换技术实现可编程控制器与变频器之间的通讯。为更加便于控制和监视,实现系统工作状况的可视化及系统工作状况的可追溯要求,更方便地实现对系统工作参数的设置,引入了HMI技术。可通过以太网接口的可编程控制器与监控中心的上位机联网,形成规模较大的快速控制网络,实现实时监控与控制。本文通过结合2m离心选矿机的工艺特点,采用PLC变频和HMI技术,对2m变频离心选矿机的控制进行系统设计,降低了工人的劳动强度,提高了选矿工作效率,保证了质量,且操作界面友好,可实时监控、安全可靠的性能。通过本次研究,保证了企业顺利实现生产目标,提高了产量,合理节能,创造了经济和社会效益,并且为针对规模化控制离心选矿机的工作模式提供了实践经验和技术参考。
[Abstract]:Centrifugal concentrator is a very important equipment in the field of gravity separation. Gravity dressing is the different characteristics of the corresponding mineral raw materials, according to the physical properties, physicochemical properties and chemical properties of their minerals. The process of screening out useful minerals. The centrifugal concentrator has introduced centrifugal force, which has greatly improved the separation efficiency and efficiency of the ore. Therefore, it is widely and extensively used in the field of mineral processing. The research in this course is to reform the control system of the concentrator used in the expansion project of a concentrator. In total, 32 centrifuges are used in the whole project. In order to increase the processing capacity per unit time and improve the dressing efficiency, the 2m centrifuge, which has the largest drum in use, is used to achieve high efficiency and stable control. Based on PLC frequency conversion technology and HMI technology, the horizontal centrifugal concentrator is controlled by Schneider ModiconM340 PLC and the man-machine interface Magelis GXO is dynamically monitored. The control system of 2m centrifuge "Programmable Controller Inverter Network Control object on Touch screen" is designed. It is proved by practice that the control system can realize stable and efficient production. In order to obtain the key parameters of the control system, the basic working principle, separation principle and development status of 2m frequency conversion centrifugal concentrator are studied in this paper. In order to meet the requirements of project use and control cost, this paper adopts Schneider Schneider product ModiconM340 programmable controller to control 32 centrifuges. The control system is designed according to the principle of moderate centralization, and the design scheme of "one drag four" is adopted, that is, a set of programmable controller is installed in a control cabinet. A set of programmable logic controller (PLC) is used to control 4 ore dressing centrifuges. At the same time, Modbus fieldbus exchange technology is used to realize the communication between programmable controller and frequency converter. In order to realize the visualization of the system working condition and the traceability of the system working condition, it is more convenient to set the working parameters of the system. The HMI technology is introduced. The programmable controller can be connected with the upper computer of the monitoring center through the Ethernet interface. A large scale fast control network is formed to realize real-time monitoring and control. The control of 2m centrifugal concentrator is systematically designed by using PLC frequency conversion and HMI technology combined with the technological characteristics of 2m centrifugal concentrator. It reduces the labor intensity of workers, improves the efficiency of ore dressing, ensures the quality, friendly operation interface, real-time monitoring, safe and reliable performance. Reasonable energy saving creates economic and social benefits and provides practical experience and technical reference for the work mode of large-scale control centrifugal concentrator.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD455.5;TD67

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