冶煉廠礦石供料係統設計

摘 要

傳統的冶煉廠礦石供料控製係統是一種基於繼電接觸器和人工手動方式的半自動化係統。但隨著冶煉廠規模的擴大，對礦石的需求量大大提高，傳統的供料係統已無法滿足冶煉廠的需要。

本文在對傳統供料控製係統進行了認真的分析與研究後，結合相關理論和技術，製定出一套由PLC為控製核心的皮帶傳輸供料控製係統。為了實現供料係統的穩定運行，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，軟件中調用相應傳感器檢測到的故障信號處理子程序並執行處理。

運用皮帶運輸線進行礦石供料大大提高了工作效率。在PLC中應用子程序的方式，不僅便於實現多種運行方式，而且大大提高了程序的可維護性和可靠性。經過實驗室供料控製係統的仿真，表明了該供料控製係統運行的正確性、實用性。

關鍵詞：PLC、礦石供料係統、組態軟件



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 礦石供料係統技術發展前景 2

1.3 本課題的主要研究內容 2

1.4 課題的意義 3

第 2 章 係統總體方案設計 4

2.1 係統分析 4

2.1.1 礦石供料係統的工藝應用及特點 4

2.1.2 礦石供料係統的組成 5

2.1.3 供料係統工藝流程 6

2.2 係統控製方案的確定 8

2.2.1 控製方案總體結構的實現 8

2.2.2 礦石供料係統控製流程 9

第 3 章 係統硬件設計 10

3.1 係統主要設備選型 10

3.1.1 PLC簡介 11

3.1.2 PLC及其擴展模塊的選型 15

3.1.3 皮帶機的選型 15

3.1.4 電動機的選型 16

3.1.5 電機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 皮帶機打滑檢測元件的選型 18

3.1.9 皮帶機撕裂元件的選型 19

3.2 係統主電路設計 19

3.3 係統硬件配置及I/O接線圖 20

第 4 章 係統軟件設計 24

4.1 PLC的通信協議簡介 24

4.2 PLC程序設計 25

4.2.1 係統主程序 25

4.2.2 係統順序停止子程序 27

4.2.3 篩選機電機正反轉子程序 28

4.2.4 二皮帶故障停止子程序 30

結論 32

致謝 33

參考文獻 34