石化原料装卸车SCADA控制系统的设计与实现
发布时间：2018-11-15 19:00
【摘要】：近年来,随着石油化学工业的迅速发展,石油以及基础化学原料的产量及消费量增长很快。作为石油化工企业,产品的进出厂与销售方式多种多样,各企业主要有管道运输、船舶运输、火车运输和汽车运输等这几种传统的储运方式。为了克服人工操作和管理带来的弊病,减少环境污染,提高储运管理作业效率和石油化工企业的整体效益以适应经济发展的需求,需要自动化程度高、安全可靠性好、便于操作维护的自动进出料的集散控制和管理系统。 本文针对某石油化工企业油港码头的特点和石化原料的定量装车、卸车要求,设计了一套符合该项目的SCADA控制系统。从现场控制设备的选型设计、下位机的控制编程和上位机的开发组态三方面实现装卸车远程联锁控制,并提供友好直观的人机界面进行现场的状态和数据监控。本论文主要研究内容如下： (1)针对项目要求,本文设计并选用德国E+H公司批量控制仪作为现场定量装车控制系统,并选取适当的过程参数测量和报警仪表,包括质量流量计、溢油静电保护器、可燃气体报警器、温度仪表、压力仪表等,满足系统装车精度要求,此外还设计选型用于装卸车业务远程下载的IC卡读卡器。所选取的设备均符合防爆统一认证,并满足项目中现场总线通讯要求。 (2)针对系统的控制要求,本文选用美国Rockwell公司的ControlLogix平台PLC作为下位机控制设备,通过RSLogix5000编程软件,使用结构文本和梯形图语言实现系统的过程设备及卸车业务控制功能,功能包括：阀门开关控制、泵的启停、PID变频控制、压缩机启停控制、自动卸车控制系统、批量控制仪冗余信号2选1控制、过程参数模拟量监控等。 (3)本文以iFIX组态软件作为上位机监控平台,设计开发系统的人机操作界面,用于远程处理装卸车业务。根据项目要求,实现现场装车、卸车8个不同工艺流程段的控制界面和多鹤位、单鹤位业务实时处理界面,并提供历史数据查询、报警显示等功能。 (4)针对系统的通讯问题,本文采用工业以太网和Modbus现场总线协议实现SCADA系统从管理层、控制层到现场层的信息交互。其中,为解决监控系统和PLC的数据通讯问题,本文采用开放、成熟的OPC技术,将监控系统作为OPC客户端访问控制器提供的OPC服务器中的数据,从而实现整个SCADA系统的管控一体化。
[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.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE968
本文编号：2334167
[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.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE968
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