摘 要


隨著全球經(jīng)濟(jì)一體化發(fā)展趨勢(shì)，特別是中國(guó)加入WTO以后，提高油庫(kù)的售油自動(dòng)化水平成為我國(guó)石油行業(yè)發(fā)展中的一項(xiàng)急迫需要。在這種前提下，開發(fā)新的石油控制系統(tǒng)已經(jīng)成為當(dāng)務(wù)之急。目前，可編程控制器已經(jīng)在自動(dòng)售油控制系統(tǒng)中得到了廣泛的運(yùn)用。本文對(duì)以PLC為控制器的自動(dòng)售油系統(tǒng)的設(shè)計(jì)原理和系統(tǒng)的整體結(jié)構(gòu)方案進(jìn)行了詳細(xì)的敘述。可編程邏輯控制器以其使用簡(jiǎn)單方便、抗干擾性能強(qiáng)、故障率低等一系列優(yōu)點(diǎn)，在控制系統(tǒng)安全、穩(wěn)定的運(yùn)行等方面做出了巨大貢獻(xiàn)。整個(gè)系統(tǒng)構(gòu)成擴(kuò)展性好、可靠性高，具有良好的通用性和工程推廣性。本文第一章首先介紹了國(guó)內(nèi)外自動(dòng)售油油控制系統(tǒng)的發(fā)展情況以及國(guó)內(nèi)現(xiàn)存的主要問題，以及本課題主要研究的內(nèi)容。第二章主要對(duì)三大控制系統(tǒng)進(jìn)行了對(duì)比，很好的展現(xiàn)了PLC+PC組成控制系統(tǒng)的優(yōu)點(diǎn)，并作出了控制系統(tǒng)的總體設(shè)計(jì)。第三章是系統(tǒng)硬件設(shè)計(jì),作為整個(gè)系統(tǒng)的主要部分，詳細(xì)闡述了現(xiàn)場(chǎng)設(shè)備、PLC、及網(wǎng)絡(luò)通信的介紹。第四章主要是針對(duì)本控制系統(tǒng)軟件部分的設(shè)計(jì)。最后還對(duì)本系統(tǒng)設(shè)計(jì)作出了總結(jié)。


關(guān)鍵詞：油庫(kù)；售油控制；安全防爆


 

Abstract


With the globalization of the world economy, especially with the entry to WTO, it is obvious that improving automatic level of oil delivery in the tank farm is urgent in the development of industry of petroleum. On this premise, the development of a new distributed control system for oil has become a top priority. At present, the programmable logic controller has been widely used in Automatic Oil System. This paper describes the design principles and overall structure of the Distributed Control System for Petroleum Based on PLC in detail. PLC makes great contribution to the system based on its easy to use, low failure rate and strong anti-interference. The composition of the whole system is scalability, reliability. This system has a good feature of universal and extended. Chapter 1 introduces the development of the Automatic Oil System as well as major problems existing in our country, and the principal content of this paper. Chapter 2 analyses the three control system, and it demonstrates the advantages of PLC+PC control systems by comparing the three main control system. And make the overall design of the control system. Chapter 3 is system hardware design. It is the most important part of this system.It describes the introduction of field, equipment, PLC and network communication. Chapter 4 is mainly directed against the part of control system software based on PLC. The final is a summary of system design.

 

Keywords:Depot;sale of oil control;safety explosion-proof

目  錄


第1章 緒論 1

1.1 油庫(kù)售油系統(tǒng)的發(fā)展現(xiàn)狀 1

1.2 課題研究的意義和目的 2

1.3 本論文主要研究的內(nèi)容 2

第2章 油庫(kù)售油系統(tǒng)總體設(shè)計(jì) 3

2.1 控制系統(tǒng)方案選擇 3

2.1.1 控制系統(tǒng)的幾種主要形式 3

2.1.2 控制系統(tǒng)方案確定 4

2.2 油庫(kù)自動(dòng)售油控制系統(tǒng)總體設(shè)計(jì) 4

2.2.1 系統(tǒng)設(shè)計(jì)的原則 5

2.2.2 控制系統(tǒng)的組成 5

2.2.3 系統(tǒng)總體結(jié)構(gòu)圖 5

2.2.4 系統(tǒng)功能的實(shí)現(xiàn) 6

2.2.5 系統(tǒng)業(yè)務(wù)流程 7

第3章 系統(tǒng)硬件設(shè)計(jì) 9

3.1 流量計(jì)量的實(shí)現(xiàn) 9

3.1.1 流量計(jì)的選擇 9

3.1.2 LL—AL80.1/A5QF—Ⅱ型腰輪流量計(jì)原理及性能 12

3.1.3 流量的計(jì)量 13

3.2 流量控制的實(shí)現(xiàn) 14

3.2.1 售油系統(tǒng)對(duì)控制閥的要求 14

3.2.2 控制閥的選擇 14

3.2.3 電磁閥的工作原理 15

3.2.4 電磁閥的選擇 16

3.3 安全售油的實(shí)現(xiàn) 16

3.3.1 現(xiàn)場(chǎng)信號(hào)處理 17

3.3.2 防靜電溢油設(shè)計(jì) 19

3.3.3 人對(duì)售油過程的監(jiān)控 20

3.3.4 售油溫度補(bǔ)償?shù)膶?shí)現(xiàn) 21

3.4 控制器PLC的選擇 22

3.4.1 PLC的選型 22

3.4.2 CJ1系列PLC結(jié)構(gòu) 22

3.4.3 CJ1系列PLC 各模塊選擇 23

3.5 PLC與控制PC機(jī)通信的實(shí)現(xiàn) 30

第4章 系統(tǒng)軟件設(shè)計(jì) 31

4.1 自動(dòng)售油控制軟件設(shè)計(jì) 31

4.1.1 控制系統(tǒng)分析 31

4.1.2 控制軟件編程思路 31

結(jié)  論 34

參考文獻(xiàn) 35

附  錄 36

謝  辭 38