基于LabVIEW的减压阀测试设备研制

发布时间：2018-07-20 20:36

【摘要】：本课题以工程实践为背景,设计与开发实现了基于LabVIEW的减压阀测试设备,主要用于高压减压阀的各种特性测试。由于原先的测试设备已手工记录测试为主,为实现快速响应、提高效率及测试准确的减压阀测试设备,在经过查阅大量的相关资料和调研、论证基础上,采用基于LabVIEW软件的测试设备可完美实现所有的要求。本文针对高压减压阀的气密实验、冲击试验、压力特性试验,在按对高压减压阀的各种测试指标要求(诸如:可实现特性试验、冲击试验、静压试验,以毫秒级快速地实时并精确地测量各点压力和温度值等),对减压阀测试系统进行了软、硬件设计。减压阀测试设备硬件部分设计包括机械和测控两部分,机械部分设计由试验台、节流孔板支架、气垫容积推车和增压模块四个部分组成,测控部分设计由工控机、数据采集卡、隔离数字量输入/继电器、电流/电压转换器、多种传感器等构成。在设计与配置了合理的机械系统和测控部分硬件的前提下,软件环境采用可进行高速采集与实时测控软件的LabVIEW软件平台。运用该软件的图形化和灵活性编程,开发了具有个性化、人性化、友好界面的实时测控软件,最终实现了高压气体减压阀测试的自动化设备系统,所研制测试设备的实测结果表明系统具有高精度的实时数据采集和处理的功能,它操作简便,工作可靠,满足高压减压阀的各种特性测试的需求。减压阀测试设备研制完成后,经过使用和测试,测试结果表明由原来的全靠人工读取记录数据,到现在依靠设备实现自动无纸记录数据,显然大大提高了测试数据的准确性、实时性、可靠性和工作效率,也满足了产品批量试验的需求。
[Abstract]:On the background of engineering practice, this paper designs and develops the test equipment of pressure reducing valve based on LabVIEW, which is mainly used for testing various characteristics of high pressure reducing valve. Since the original test equipment has been manually recorded and tested, in order to achieve rapid response, improve efficiency and test accuracy of the pressure relief valve testing equipment, after consulting a large number of relevant information and research, on the basis of demonstration, The test equipment based on LabVIEW software can fulfill all the requirements perfectly. This paper aims at the airtight test, impact test, pressure characteristic test of high pressure reducing valve, according to various test index requirements of high pressure reducing valve (such as: realizable characteristic test, impact test, static pressure test, etc.) Using millisecond to measure the pressure and temperature of every point in real time and accurately, the software and hardware of the pressure reducing valve testing system are designed. The hardware design of the pressure reducing valve test equipment includes two parts: machinery and measurement and control. The design of the mechanical part is composed of four parts: the test bed, the orifice plate support, the air cushion volume cart and the booster module. The measurement and control part is designed by the industrial control computer, the data acquisition card, Isolation digital input / relay, current / voltage converter, a variety of sensors and so on. On the premise of designing and configuring reasonable mechanical system and measuring and controlling part hardware, the software environment adopts LabVIEW software platform which can carry out high speed acquisition and real time measurement and control software. With the help of graphic and flexible programming of the software, a real-time measurement and control software with personalized, humanized and friendly interface is developed, and the automatic equipment system of high pressure gas pressure reducing valve testing is finally realized. The measured results of the developed test equipment show that the system has the function of high precision real-time data acquisition and processing. It is easy to operate and reliable to work. It can meet the requirements of various characteristics test of high pressure reducing valve. After the development of the test equipment for the pressure reducing valve, after using and testing, the test results show that the accuracy of the test data has been greatly improved from the original manual reading of the recorded data to the realization of automatic paperless recording data by the equipment. Real-time, reliability and working efficiency also meet the needs of batch testing.
【学位授予单位】：宁波大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TH137.52

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