Core monitoring device of central authorities subassembly

The utility model provides a core monitoring device of central authorities subassembly, include: the instrument pipe unit of protractile, it includes the instrument subassembly, and guidance assembly,guidance assembly can operate in order to incite somebody to action by optionally the middle position of instrument pipe unit location in the reactor core of protractile. 本实用新型提供种中央芯体监控装置组件，包括：可伸出的仪器管单元，其包括仪器组件；和引导组件，所述引导组件能选择性地操作以将所述可伸出的仪器管单元定位在反应堆芯体中的中央位置。