摘要
介绍了一种测量汽轮机轴承振动的新方法。它是在汽轮机轴承的垂直、水平和轴向3个位置的表面各贴一个反光物质,当激光器发出的光线照射在反光物质并反射到某个平面上两个相互垂直的敏感传感器(简称PSD)时,从PSD传感器的检测电路就能输出轴承表面的振动波形,然后利用比较器从3个方向的振动位移选取一个最大值,当最大值超过汽轮机的轴承位移的规定值时,汽轮机跳闸停机并报警。另外,还着重介绍了PSD的测量原理、检测电路等。最后介绍了利用PSD测量汽轮机的轴承振动的优点,这为以后研究汽轮机轴承振动的测量提供了一种新的思路。
The passage narrates a new way to measure steam turbine＇ s axial librations. A reflecting substance is pasted in vertical, level and axial positions of turbine＇ s axis, when light from a laser shines down on it and reflects on PSD, which are vertical each other, the turbine＇ s vibrating waveforms are outputted from the corresponding detecting circuit of PSD. Then a maximum value can be choosed through the comparator, when the max surpasses prescriptive value, turbine breakdowns and gives alarm ring. In addition, the passage emphatically tells the measured principle of PSD, the corresponding detecting circuit etc. At last, the passage introduces some merits for using PSD to measure turbine＇ s axial librations, which provides a new way in studying axial librations.
出处
《汽轮机技术》
北大核心
2009年第1期67-69,共3页
Turbine Technology
关键词
位置敏感传感器
汽轮机
轴承振动
测量
position sensitive detector （PSD）
steam turbine
axial librations
measurement
