本文關鍵詞： 2m離心選礦機 變頻調速 PLC 人機界面　出處：《昆明理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：離心選礦機是重選領域中一種非常重要的選礦設備。重力選礦就是對所采集到的相應礦物原料,根據其礦物的物理性質、物理化學性質和化學性質的不同特征,篩選出有用礦物的過程。離心選礦機由于引入了離心力,使得礦料的分選效果和效率被大大提升,因此它在選礦領域被廣泛而大量地運用。本課的研究是對一選礦廠擴建項目中使用的選礦離心機的控制系統(tǒng)進行改造,在整個項目中總共使用32臺選礦離心機,與同類情況相比,其數量可觀。為提高單位時間的處理量,提高選礦效率,選用現(xiàn)有使用中轉鼓最大的2m選礦離心機。為實現(xiàn)高效、穩(wěn)定控制,結合當前控制系統(tǒng)技術發(fā)展的現(xiàn)狀及生產的實際需要,基于PLC變頻技術和HMI技術,采用施耐德ModiconM340 PLC對臥式離心選礦機進行控制,人機界面Magelis GXO進行動態(tài)監(jiān)控,設計了2m離心機“觸摸屏+可編程控制器+變頻器+網絡+控制對象”的控制系統(tǒng),通過實際驗證,該控制系統(tǒng)能實現(xiàn)穩(wěn)定高效生產,很大程度的提高了經濟效益。為獲取控制系統(tǒng)所需的關鍵參數,本文對2m變頻離心選礦機的基本工作原理和分選原理及發(fā)展現(xiàn)狀進行了研究,并通過實驗,獲取影響選礦效果的關鍵參數信息。為滿足項目使用的要求同時控制成本,本文采用施耐德施耐德產品ModiconM340可編程控制器,針對32臺離心機兩地控制要求,按適度集中的原則設計控制系統(tǒng),采用一拖四的設計方案,即一個控制柜中安裝一套可編程控制器,一套可編程控制器控制4臺選礦離心機。同時采用Modbus現(xiàn)場總線交換技術實現(xiàn)可編程控制器與變頻器之間的通訊。為更加便于控制和監(jiān)視,實現(xiàn)系統(tǒng)工作狀況的可視化及系統(tǒng)工作狀況的可追溯要求,更方便地實現(xiàn)對系統(tǒng)工作參數的設置,引入了HMI技術�？赏ㄟ^以太網接口的可編程控制器與監(jiān)控中心的上位機聯(lián)網,形成規(guī)模較大的快速控制網絡,實現(xiàn)實時監(jiān)控與控制。本文通過結合2m離心選礦機的工藝特點,采用PLC變頻和HMI技術,對2m變頻離心選礦機的控制進行系統(tǒng)設計,降低了工人的勞動強度,提高了選礦工作效率,保證了質量,且操作界面友好,可實時監(jiān)控、安全可靠的性能。通過本次研究,保證了企業(yè)順利實現(xiàn)生產目標,提高了產量,合理節(jié)能,創(chuàng)造了經濟和社會效益,并且為針對規(guī)�；刂齐x心選礦機的工作模式提供了實踐經驗和技術參考。
[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.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD455.5;TD67

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