安全阀在线测试装置设计(含CAD零件图装配图)
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安全阀在线测试装置设计(含CAD零件图装配图)(开题报告,周进展表,外文翻译,论文说明书10000字,CAD图16张)
摘 要
安全阀是一种使用广泛保护装置,主要原理是阀瓣开启释放压力保证设备安全。国家标准要求“每年至少应校验一次”,以此来是安全阀能正常运行。离线校验使用较多。离线校验要求将生产设备停止,然后把安全阀拆卸下来,再由校验人员校验其参数。该方法会因拆卸条件限制、校验期间影响工期,综合成本高等因素限制。在线校验相对于离线校验在安全、经济、时间等方面有很大优势,所以,在线校验就很有研究的必要。
本文设计了一套机电液一体化的安全阀在线检测装置,该装置以机械结构为主体,配以液压系统辅助作为动力,计算机控制完成检测。设计主要内容包括:(1)机械夹具的设计和计算;(2)液压动力系统的设计计算;(3)控制部分数据采集设备和传感器的选型。
关键词:安全阀 在线检测 夹具 液压缸
Design of on-line inspection device for safety valve
Abstract
Safety valve is a kind of protective device, which controls the pressure not exceeding the specified value and plays a protective role for personal safety and equipment. To ensure the safety of the equipment, the general safety valve requirements "at least once a year should be tested". At present, most of safety valves are inspected by off-line test method. Off-line test method requires the safety valve to be removed after the production equipment is stopped for check. Although the purpose of check is achieved, it also leads to a series of economic problems brought by that the production equipment must be stopped. Besides, this method is also limited by the disassembly conditions of the safety valve, with long check time and high comprehensive cost. Compared with off-line test method, on-line test method has great advantages in terms of safety, economy and time, so it is necessary to study online validation.
[来源:http://think58.com]
A set of electromechanical and hydraulic integrated safety valve on-line testing method is designed in this thesis, which takes mechanical structure as the main body and is assisted by hydraulic system as the power and completes the testing by computer control. This device mainly includes: (1) the calculation in the design of mechanical fixture; (2) design and calculation of hydraulic power system; (3) control part of the data acquisition device and sensor selection[1].
Key Words: Safety valve;On-line test inspection;Mechanical fixture;Hydraulic cylinder
安全阀在线检测装置的整体设计
安全阀结构简图如图2-1所示。正常工作时阀瓣和阀体通过阀杆上的弹簧力实现密封功能,当作用在阀瓣下方的压力过大超过弹簧力时,阀瓣和阀体分离,安全阀起跳释放压力。本次设计思路为:在阀杆处提供向上的外力,带动阀瓣打开,达到人为打开安全阀的目的,再在其中进行安全阀性能参数的测量。安全阀的测试主要是确定安全阀的起跳压力和回座压力。
[来源:http://think58.com]
目录
摘 要 I
Abstract II
[来源:http://www.think58.com]
第一章 绪论 1
1.1研究背景和意义 1
1.2国内外研究现状 2
1.3本论文主要研究内容 3
第二章 安全阀在线检测装置的整体设计 4
第三章 机械部分设计 7
3.1机械夹具设计 7
3.2液压动力系统设计 10
第四章 控制部分设计 19
4.1数据采集设备的选型 19
4.2测试传感器 21
4.3数据采集箱集成和连接 24
第五章 经济性分析 26
第六章 总结和展望 28
参考文献 29
致谢 30
[资料来源:http://think58.com]