摘要本课题设计开发的旋转机械无线遥测试验台即可以满足企业测试要求, 也可以作为科研设备,主要是利用无线遥测检测技术,结合传统的测量技术,实现旋转机械的应力应变、振动等的测试以及分析。本课题主要以模拟旋转汽轮机转子作为研究对象,对旋转叶片应力应变和振动进行测试而设计,通过对叶片不同条件下应力应变分布情况的测试,与理论分析相结合,获得各种不同工况下的应力应变变化规律,进而为发动机的设计及失效分析提供依据。23562
本文介绍无线遥测试验台的整体结构和各实验的实验原理通过分析计算完成机械系统的设计,同时对测试系统提出粗略的测试方案,在完成完成测试的基础上,能对信号进行简单的处理,能得到比较直观的实验效果图。
关键词:无线遥测试验台 ,叶片,汽轮机转子,应力应变,测试,振动
Abstract
This dynamic integrated dynamic integrated testing platform on rotary machines not
only can be used as teaching equipments, but also be applicable to scientific research in the
scientific institutions.
The stress and strain, displacement, temperature, speed, torque, vibration and shaft
stiffness of rotating machinery can be tested, primarily using fiber grating, and other sensor
detection technology, combined with the traditional measurement technology. In this paper, to
study for the rotating blades, the platform is developed for the rotating blade shaft stiffness and
stress and strain testing. By testing the leaves under different conditions of stress and strain
distribution, combined with the theoretical analysis, you can sum up all kinds of different
conditions of stress and strain changes in the law, providing the basis for the design of engine
blades and failure analysis.
This paper presents the overall structure of the platform and the principle of experiments.
By calculating and analysis, the mechanical system design is completed, while the test system
made a rough testing method is completed on the basis of system design. I use
three-dimensional modeling software Pro-E to model and simulate, making results more
intuitive. The effect of the testing platform is given, including its photo. Finally, a summary of
the final prospects is finished.
Key Words:testing platform;blade;fiber grating;stress and strain;testing;目录
1 绪论 1
1.1 课题的目的及意义 .1
1.2 国内外研究状况 .1
1.3 传感器在振动试验台上的运用 .2
2 无线遥测实验台的组成及实验原理 3
2.1 实验台的总体设计及组成 .3
2.2 试验台主要性能参数 .4
2.2.1 技术要求与测试参数:.4
2.2.2 试验台的主要性能参数:.5
3 机械系统设计计算 6
3.1 旋转机械无线遥测测试试验台整体结构设计 .6
3.2 电动机的选取 .7
3.2.1 选择电动机类型7
3.2.2 选择电动机功率7
3.3 传动比的计算.12
3.4 轴的设计与校核.12
3.4.1 计算轴的转矩 .12
3.6 轴的设计计算.13
3.7 轴承的选择及校核计算.18
3.7.1 轴的轴承 18
3.7.3 轴承 18
3.8 联轴器的选择和计算.21
3.9 键的选择和校核计算.22
3.9.1 低速轴与联轴器用键联接 22
3.9.2 轴与联轴器用键联接 22
3.10 润滑 .23
3.10.1 轴的润滑23
3.11 传感器的安装 .23
3.11.1 应变片的粘贴23
4 测控系统的设计.24
4.1 控制系统 24
4.2 检测系统 24
4.2.1 各机械部件安装与功能: .25
4.2.2 传感器信号调理(放大、调理、转换)器 .26
4.2.3 数据采集卡 .26
4.2.4 接线端子卡 .26
4.2.5 光隔离卡(光电隔离器) .27
5.无线遥测试验台效果.28