故障在线监测自编码式棒位指示系统

提出了一种结构简单、工作可靠、测量精度高的控制棒位置指示系统—故障在线监测自编码式棒位指示系统。该系统探测器由一个励磁线圈、Ｎ个测量线圈、一个补偿线圈和一根芯棒组成。其中，芯棒由Ｍ段导磁材料与Ｍ１段非导磁材料间隔分布构成。当芯棒随控制棒在测量线圈中央轴向运动时，励磁线圈上输入的交变信号必然在测量线圈上产生交变感应信号，通过接收这些测量线圈的输出信号并进行处理从而判断控制棒棒位。本文详细地介绍了该系统工作原理、硬件结构、软件框图及试验。结论表明：它比现役压水堆使用的线圈编码棒位指示系统性能优越并具有更多的功能—故障在线监测功能，它可完全满足供热堆的棒位测量要求并可用于其他水堆的棒位指示。

Self encoding rod position indicating system of online failture monitoring

The self encoding rod position indicating system of online failture monitoring consisting of a magnetic exciting winding, N indicating coils, a compensation coil and a core bar is introduced in this paper. The core bar is composed of M sections of magnetic cores and M 1 non magnetic portions arranged alternately. As the control rod is withdrawn, the bar passes the indicating coils and the coils outputs which are inducted by the exciting signal of the winding will be changed. By receiving and processing the outputs, the control rod position is gotten. Further, the system principle, hardware structure, software diagram and experiments are described in detail in the paper. The conclusion shows that the rod position indicating system has many advantages over the automatic rod position indicating system being used in PWRs such as simple structure, excellent reliability and high indication precision and has the capability of online failture monitoring. The self encoding rod position indicating system meets the demand of the rod position indication of the hydraulic control rod drive system in nuclear heating reactors and can be used for other water reactors.