摘 要

本课题拟设计一套基于PLC和工控组态软件MCGS的三螺杆泵性能测试台监控系统。在测试过程中，上位机监控系统能通过自动和手动两种方式控制测试台油路管道系统的开关，实时显示油路系统阀门的运行状态，实时显示测试台中各硬件设备的运行情况；在测试过程中，若油箱液位高于上限值或低于下限值，监控系统能够及时报警示意工作人员进行查看，并及时暂停硬件系统的运转，保证测试安全；该监控系统采用工控组态软件MCGS和可编程控制器相结合方式，上位机界面操作简单方便，控制准确度高，能大幅度减少人工劳动强度，提高生产效率，通过与其他相关的硬件设备相结合，可以方便快捷的开发各项用于现场采集、数据控制和处理的设备。用户可以通过简便的模块化组态就可以构造自己的应用系统。上位机界面操作简单方便，控制准确度高，能大幅度减少人工劳动强度，提高生产效率，为进行大规模的产品自动检测做好准备，适用于各类型三螺杆泵的在线性能测试，满足工业化生产的要求。

关键词：三螺杆泵性能测试台；监控系统；阀门； MCGS； PLC。

Design of monitoring system for three screw pump performance testing platform

Abstract

This topic is to design a monitoring system of three screw pump performance test platform based on PLC and industrial control configuration software MCGS. During the test, the PC monitoring system through the automatic and manual control in two ways to test the switch desk oil pipeline system, real-time display the running status of the oil system of the valve, the real-time display of running test platform of hardware; during the test, if the oil tank level is higher than the upper limit value or below the lower limit, monitoring the system can timely alarm of the staff to view, and promptly suspended hardware system operation, ensure safety testing; the monitoring system uses MCGS configuration software and programmable controller combined with the upper machine interface, simple and convenient operation, high accuracy of control, can greatly reduce labor intensity, improve the production efficiency, through the combined with other related hardware equipment, can be convenient for the development of data acquisition, control and processing Equipment. Users can build their own application systems through simple modular configuration. PC interface is simple and convenient operation, high accuracy of control, can greatly reduce labor intensity, improve production efficiency, to carry out large-scale products automatic detection of ready online performance test is suitable for various types of the three screw pump, meet the requirement of industrial production.

Key words: three screw pump performance test platform; monitoring system; valve; MCGS; PLC.

目 录

1 绪论……………………………………………………………………………………………………………1

1.1 研究目的及意义………………………………………………………………………………………1

1.2 国内外同类研究概况…………………………………………………………………………………1

2 三螺杆泵性能测试台监控系统的总体构成方案……………………………………………………………3

2.1 系统组成………………………………………………………………………………………………3

2.2 系统原理………………………………………………………………………………………………3

2.3 具体内容………………………………………………………………………………………………4

3 三螺杆泵性能测试台监控系统的软件设计与上位机界面搭建……………………………………………5

3.1 组态软件介绍…………………………………………………………………………………………5

3.1.1 MCGS的概念及特点……………………………………………………………………………5

3.1.2 MCGS工程的五大部分…………………………………………………………………………5

3.2 界面搭建………………………………………………………………………………………………6

3.2.1 用户窗口设置…………………………………………………………………………………6

3.2.2 实时数据库窗口设置…………………………………………………………………………10

3.2.3 主控窗口设置…………………………………………………………………………………11

3.3 运行环境……………………………………………………………………………………………12

3.4 故障报警……………………………………………………………………………………………13

3.5 操作权限及管理……………………………………………………………………………………16

4 三螺杆泵性能测试台监控系统中下位机PLC程序设计…………………………………………………21

4.1 PLC介绍………………………………………………………………………………………………21

4.1.1 概述……………………………………………………………………………………………21

4.1.2 PLC特点………………………………………………………………………………………21

4.2 控制流程图…………………………………………………………………………………………22

4.3 输入、输出点及PLC选型……………………………………………………………………………22

4.4 PLC梯形图……………………………………………………………………………………………24

结论……………………………………………………………………………………………………………25

致谢……………………………………………………………………………………………………………26

参考文献………………………………………………………………………………………………………27附录 PLC梯形图……………………………………………………………………………………………28

1 绪论

1.1 研究目的及意义

基于组态软件MCGS和三菱Fx2N系列PLC的三螺杆泵性能测试台监控系统具有良好的人机交互操作界面，能够高效、快速地对各个设备运行状态的检测，在测试过程中，上位机监控系统能通过自动和手动两种方式控制测试台油路管道系统的开关，实时显示油路系统阀门的运行状态，实时显示测试台中各硬件设备的运行情况；在测试过程中，若发生故障，监控系统能够及时报警提醒工作人员进行检查，并及时停止硬件系统的运行，保证测试安全；该监控系统采用工控组态软件MCGS和可编程控制器相结合方式，上位机界面操作简单方便，控制准确度高，能大幅度降低人工劳动强度，提高生产效率，为进行大规模的产品自动检测做好准备，适用于各类型三螺杆泵的在线性能测试，满足工业化生产的要求。

1.2 国内外同类研究概况