【摘要】：近年來,隨著石油化學(xué)工業(yè)的迅速發(fā)展,石油以及基礎(chǔ)化學(xué)原料的產(chǎn)量及消費(fèi)量增長很快。作為石油化工企業(yè),產(chǎn)品的進(jìn)出廠與銷售方式多種多樣,各企業(yè)主要有管道運(yùn)輸、船舶運(yùn)輸、火車運(yùn)輸和汽車運(yùn)輸?shù)冗@幾種傳統(tǒng)的儲(chǔ)運(yùn)方式。為了克服人工操作和管理帶來的弊病,減少環(huán)境污染,提高儲(chǔ)運(yùn)管理作業(yè)效率和石油化工企業(yè)的整體效益以適應(yīng)經(jīng)濟(jì)發(fā)展的需求,需要自動(dòng)化程度高、安全可靠性好、便于操作維護(hù)的自動(dòng)進(jìn)出料的集散控制和管理系統(tǒng)。 本文針對(duì)某石油化工企業(yè)油港碼頭的特點(diǎn)和石化原料的定量裝車、卸車要求,設(shè)計(jì)了一套符合該項(xiàng)目的SCADA控制系統(tǒng)。從現(xiàn)場(chǎng)控制設(shè)備的選型設(shè)計(jì)、下位機(jī)的控制編程和上位機(jī)的開發(fā)組態(tài)三方面實(shí)現(xiàn)裝卸車遠(yuǎn)程聯(lián)鎖控制,并提供友好直觀的人機(jī)界面進(jìn)行現(xiàn)場(chǎng)的狀態(tài)和數(shù)據(jù)監(jiān)控。本論文主要研究?jī)?nèi)容如下： (1)針對(duì)項(xiàng)目要求,本文設(shè)計(jì)并選用德國E+H公司批量控制儀作為現(xiàn)場(chǎng)定量裝車控制系統(tǒng),并選取適當(dāng)?shù)倪^程參數(shù)測(cè)量和報(bào)警儀表,包括質(zhì)量流量計(jì)、溢油靜電保護(hù)器、可燃?xì)怏w報(bào)警器、溫度儀表、壓力儀表等,滿足系統(tǒng)裝車精度要求,此外還設(shè)計(jì)選型用于裝卸車業(yè)務(wù)遠(yuǎn)程下載的IC卡讀卡器。所選取的設(shè)備均符合防爆統(tǒng)一認(rèn)證,并滿足項(xiàng)目中現(xiàn)場(chǎng)總線通訊要求。 (2)針對(duì)系統(tǒng)的控制要求,本文選用美國Rockwell公司的ControlLogix平臺(tái)PLC作為下位機(jī)控制設(shè)備,通過RSLogix5000編程軟件,使用結(jié)構(gòu)文本和梯形圖語言實(shí)現(xiàn)系統(tǒng)的過程設(shè)備及卸車業(yè)務(wù)控制功能,功能包括：閥門開關(guān)控制、泵的啟停、PID變頻控制、壓縮機(jī)啟停控制、自動(dòng)卸車控制系統(tǒng)、批量控制儀冗余信號(hào)2選1控制、過程參數(shù)模擬量監(jiān)控等。 (3)本文以iFIX組態(tài)軟件作為上位機(jī)監(jiān)控平臺(tái),設(shè)計(jì)開發(fā)系統(tǒng)的人機(jī)操作界面,用于遠(yuǎn)程處理裝卸車業(yè)務(wù)。根據(jù)項(xiàng)目要求,實(shí)現(xiàn)現(xiàn)場(chǎng)裝車、卸車8個(gè)不同工藝流程段的控制界面和多鶴位、單鶴位業(yè)務(wù)實(shí)時(shí)處理界面,并提供歷史數(shù)據(jù)查詢、報(bào)警顯示等功能。 (4)針對(duì)系統(tǒng)的通訊問題,本文采用工業(yè)以太網(wǎng)和Modbus現(xiàn)場(chǎng)總線協(xié)議實(shí)現(xiàn)SCADA系統(tǒng)從管理層、控制層到現(xiàn)場(chǎng)層的信息交互。其中,為解決監(jiān)控系統(tǒng)和PLC的數(shù)據(jù)通訊問題,本文采用開放、成熟的OPC技術(shù),將監(jiān)控系統(tǒng)作為OPC客戶端訪問控制器提供的OPC服務(wù)器中的數(shù)據(jù),從而實(shí)現(xiàn)整個(gè)SCADA系統(tǒng)的管控一體化。
[Abstract]:In recent years, with the rapid development of petrochemical industry, the production and consumption of petroleum and basic chemical raw materials increase rapidly. As a petrochemical enterprise, there are a variety of products in and out of the factory and sales methods, the main enterprises are pipeline transport, ship transport, train transport and automobile transportation and other traditional storage and transportation methods. In order to overcome the disadvantages caused by manual operation and management, reduce environmental pollution, improve the efficiency of storage and transportation management and the overall benefit of petrochemical enterprises to meet the needs of economic development, it is necessary to have a high degree of automation and good safety and reliability. Easy to operate and maintain the automatic feeding and distribution control and management system. According to the characteristics of the oil port wharf of a petrochemical enterprise and the quantitative loading and unloading requirements of petrochemical raw materials, a set of SCADA control system is designed in this paper. The remote interlocking control of the loading and unloading vehicle is realized from the aspects of the selection and design of the field control equipment, the control programming of the lower computer and the development and configuration of the upper computer, and the friendly and intuitive man-machine interface is provided to monitor the status and data of the field. The main contents of this thesis are as follows: (1) according to the requirements of the project, this paper designs and selects the batch control instrument of EH Company of Germany as the on-site quantitative loading control system, and selects appropriate process parameters measurement and alarm instrument. It includes mass Flowmeter, oil spill electrostatic protector, combustible gas alarm, temperature meter, pressure meter and so on, which can meet the requirement of system loading precision. In addition, IC card reader is designed and selected for remote download of loading and unloading vehicle business. The selected equipment conforms to the unified authentication of explosion-proof and meets the requirements of fieldbus communication in the project. (2) according to the control requirements of the system, the ControlLogix platform PLC of Rockwell Company is chosen as the control equipment of the lower computer in this paper. Through the RSLogix5000 programming software, the control function of the process equipment and unloading business of the system is realized by using the structure text and trapezoid diagram language. Functions include: valve switch control, pump start and stop, PID frequency conversion control, compressor start and stop control, automatic unloading control system, batch control instrument redundant signal 2 select 1 control, process parameters analog monitoring and so on. (3) in this paper, the iFIX configuration software is used as the host computer monitoring platform, and the man-machine interface of the system is designed and developed, which can be used for the remote processing of the loading and unloading vehicle business. According to the requirements of the project, the control interface, multi-crane position and single-crane service real-time processing interface of 8 different process flow sections are realized, and the functions of historical data query, alarm display and so on are provided. (4) aiming at the communication problem of the system, this paper uses industrial Ethernet and Modbus fieldbus protocol to realize the information exchange of SCADA system from management layer, control layer to field layer. In order to solve the problem of data communication between monitoring system and PLC, this paper adopts the open and mature OPC technology, and uses the monitoring system as the OPC client to access the data in the OPC server. In order to achieve the management and control integration of the whole SCADA system.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE968

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本文編號(hào)：2334167