摘要 水压试验机电气控制系统的设计—PLC控制和编程

摘要

随着国民经济的飞速发展,钢管被广泛应用于石油化工、锅炉制造等行业,它们的普遍特点是常用于高温、高压等恶劣工况下,因此对钢管的质量提出了更高的要求。本文所介绍的水压试验机控制系统正是为检验钢管的耐压能力而设计制造的。它是一个多方面为一体的复杂系统,是集机械、电气、液压、传感和自动控制为一体的复杂的机、电、液一体化设备。

本文所研究的水实验压机是一种利用油水平衡控制对钢管进行静水压试验的机器。水压试验机的控制系统由硬件系统、软件系统组成。本次设计中，我主要负责PLC控制和编程部分 。

关键词：水压试验机控制系统；油水平衡控制；静水压

i

Abstract

Design Of ElectricalControl System For Hydrostatic Testing Machine—Control and Programming By PLC

Abstract

With the rapid development of the national economy，steel pipes are widely used in petrochemical, boiler manufacturing industry, their general characteristics is commonly used in high temperature, high pressure and other adverse conditions, so the quality of steel has put forward higher requirements. Described in this article hydrostatic testing machine control system for the test tube is the ability to design and manufacture of pressure of. It is a multifaceted complex system as a whole, is a mechanical, electrical, hydraulic, sensor integration and automation for complex mechanical, electrical and hydraulic equipment integration.

In this paper, the experimental study of water press is a balance to control the use of oil-water pipe for hydrostatic pressure testing machine. Hydraulic test machine control system by the hardware system, software system. The design, I am primarily responsible for part of PLC control and programming.

Keywords: Control system for hydrostatic testing machine; Oil and water balance control; Hydrostatic pressure

ii

目录

目 录

摘要 ....................................................... i Abstract ...................................................ii 目 录 ..................................................... I 1 绪论 .................................................... 1

1.1课题背景 ...................................................... 1 1.2 研究意义 ...................................................... 1 1.3 国内外相关领域的研究现状 ...................................... 1 1.4 研究内容 ...................................................... 2 1.5 论文结构 ...................................................... 3 1.6 本章小结 ...................................................... 3

2 水压机控制系统的工作原理及基本构成 ..................... 4

2.1 水压试验机控制系统工作原理 .................................... 4 2.2 水压试验机控制系统的基本构成 .................................. 5 2.2.1 硬件系统组成 .............................................. 5 2.2.2 软件系统组成 .............................................. 8 2.3 本章小结 ..................................................... 10

3 系统软件PLC部分的设计实现 .............................11

3.1 编程方案 ...............................................11 3.2 西门子S7-200 PLC模块 ...................................11 I

目录 3.2.1 CUP模块.................................................. 11 3.2.2 扩展模块 ................................................. 12 3.3 控制系统I/O设计 ............................................. 12 3.4 数据采集处理： ............................................... 15 3.5 PLC与计算机的自由协议通信 ................................... 17 3.6 本章小结 ..................................................... 18

4 重点程序介绍............................................19

4.1 油压跟踪水压程序介绍 ......................................... 19 4.2 星三角启动程序 ............................................... 20 4.3 水压和油压初始化程序 ......................................... 20 4.4 水压和油压的采集程序 ......................................... 21 4.5 机架的手动前进后退程序 ....................................... 23 4.6 本章小结 ..................................................... 24

5 结论与展望 ..............................................25

5.1 研究课题总结 ................................................. 25 5.2 课题前景展望 ................................................. 25

致 谢 .....................................................27 参考文献 ...................................................27 附录：部分主程序...........................................28

II