摘  要

傳統(tǒng)的冶煉廠礦石供料控制系統(tǒng)是一種基于繼電接觸器和人工手動(dòng)方式的半自動(dòng)化系統(tǒng)。但隨著冶煉廠規(guī)模的擴(kuò)大，對(duì)礦石的需求量大大提高，傳統(tǒng)的供料系統(tǒng)已無法滿足冶煉廠的需要。

本文在對(duì)傳統(tǒng)供料控制系統(tǒng)進(jìn)行了認(rèn)真的分析與研究后，結(jié)合相關(guān)理論和技術(shù)，制定出一套由PLC為控制核心的皮帶傳輸供料控制系統(tǒng)。為了實(shí)現(xiàn)供料系統(tǒng)的穩(wěn)定運(yùn)行，處理諸如皮帶跑偏、打滑及撕裂等問題，在主電路中用傳感器檢測故障信號(hào)，軟件中調(diào)用相應(yīng)傳感器檢測到的故障信號(hào)處理子程序并執(zhí)行處理。

運(yùn)用皮帶運(yùn)輸線進(jìn)行礦石供料大大提高了工作效率。在PLC中應(yīng)用子程序的方式，不僅便于實(shí)現(xiàn)多種運(yùn)行方式，而且大大提高了程序的可維護(hù)性和可靠性。經(jīng)過實(shí)驗(yàn)室供料控制系統(tǒng)的仿真，表明了該供料控制系統(tǒng)運(yùn)行的正確性、實(shí)用性。

關(guān)鍵詞：PLC、礦石供料系統(tǒng)、組態(tài)軟件

 

Abstract

The traditional smelter ore material feeding control system is a kind of based on relay contactor and artificially manually half automation system. But as the smelter, the expansion of the scale of the demand for ore greatly improved, and the traditional material feeding system has failed to meet the needs of smelter.

In this paper, the traditional material feeding control system has carried on the earnest analysis and research, unifies the related theory and technology, develop a set of by PLC as control core belt transmission material feeding control system. In order to realize the material feeding system, such as the stable operation of the belt running deviation and handle problems such as skidding and tear in the main circuit fault signal using sensor detection, software invokes the sensor detects corresponding fault signal processing procedure and execute processing.

Using belt transit for ore material feeding greatly improve the working efficiency. Application of subroutines in PLC, not only is easy to realize the way many kinds of operation mode, and greatly improve the reliability and maintainability of the program. After lab material feeding control system, the simulation shows that the material feeding control system runs and practicability.

Keywords: PLC, ore material feeding system, the configuration software

 

目  錄

摘  要 I

Abstract II

第 1 章 緒 論 1

1.1 課題的提出 1

1.2 礦石供料系統(tǒng)技術(shù)發(fā)展前景 2

1.3 本課題的主要研究內(nèi)容 2

1.4 課題的意義 3

第 2 章 系統(tǒng)總體方案設(shè)計(jì) 4

2.1 系統(tǒng)分析 4

2.1.1 礦石供料系統(tǒng)的工藝應(yīng)用及特點(diǎn) 4

2.1.2 礦石供料系統(tǒng)的組成 5

2.1.3 供料系統(tǒng)工藝流程 6

2.2 系統(tǒng)控制方案的確定 8

2.2.1 控制方案總體結(jié)構(gòu)的實(shí)現(xiàn) 8

2.2.2 礦石供料系統(tǒng)控制流程 9

第 3 章 系統(tǒng)硬件設(shè)計(jì) 10

3.1 系統(tǒng)主要設(shè)備選型 10

3.1.1 PLC簡介 11

3.1.2 PLC及其擴(kuò)展模塊的選型 15

3.1.3 皮帶機(jī)的選型 15

3.1.4 電動(dòng)機(jī)的選型 16

3.1.5 電機(jī)過流檢測元件的選型 16

3.1.6 稱重傳感器的選型 17

3.1.7 皮帶跑偏檢測元件的選型 17

3.1.8 皮帶機(jī)打滑檢測元件的選型 18

3.1.9 皮帶機(jī)撕裂元件的選型 19

3.2 系統(tǒng)主電路設(shè)計(jì) 19

3.3 系統(tǒng)硬件配置及I/O接線圖 20

第 4 章 系統(tǒng)軟件設(shè)計(jì) 24

4.1 PLC的通信協(xié)議簡介 24

4.2 PLC程序設(shè)計(jì) 25

4.2.1 系統(tǒng)主程序 25

4.2.2 系統(tǒng)順序停止子程序 27

4.2.3 篩選機(jī)電機(jī)正反轉(zhuǎn)子程序 28

4.2.4 二皮帶故障停止子程序 30

結(jié)論 32

致謝 33

參考文獻(xiàn) 34