数字模拟棒位探测器的研究

提出了一种结构简单、工作可靠、测量精度较高的控制棒棒位探测器－－数字模拟棒位探测器。该探测器由两个反饶串接的长电感线圈，两个短电感编码线圈与一根编码芯棒组成，其中，编码芯棒由一段导磁衔铁与一段非导磁材料组成。当编码芯棒在线圈中央轴向运行时，初级线圈上输入的交变励磁信号必在次级线圈上产生交变的感应信号，通过接收这些线圈的输出信号并进行处理从而判断控制棒在堆内的运行位置。实验结果表明：本数字模拟棒位探

Study on Digital Analog RodPosition Detector

The Digital Analog Rod Position Detector consisting of several group transformers and one coding bar is introduced in this paper.It is composed of two long opposite and two short secondary coils arranged on longitudical axis of rod housing and a coding bar possessing a magnetic core and a non magnetic portion.While the bar passes the secondary coils,their outputs which are inducted by the exciting signal of the primary coil will be changed.By analyzing and processing the varying outputs,the control rod position is gotten.Further,the writers describe the principle of the detector and its experiments.The conclusion shows that the detector has many advantages such as simple constructure,excellent reliability and high detection precision and it is able to be used for rod position detection of Nuclear Heating Reactor(NHR).