公开(公告)号：EP3686900A1

公开(公告)日：2020-07-29

申请号：EP17925989.0

申请日：2017-09-20

申请人： Ling Ao Nuclear Power Co., Ltd. ,  China Nuclear Power Technology Research Institute Co., Ltd. ,  China General Nuclear Power Corporation ,  CGN Power Co., Ltd.

发明人： PANG, Zhengzheng ,  ZHANG, Yuxiang ,  LI, Weicai ,  JI, Shizhe

IPC分类号： G21C3/34

摘要： A spacer grid and a fuel assembly, the spacer grid comprising two grille units (10) and a clamp unit (20); the two grille units (10) are disposed in an opposing vertical configuration and the clamp unit (20) is inserted between the grille units (10), and can move vertically relative to the grille units (10). The spacer grid of the fuel assembly can reduce stress on a guide tube, reduce the fuel assembly growth and ensure lateral rigidity of the fuel assembly, prevent bending of the fuel assembly and reduce difficulties in inserting a control rod downwards during normal operations, increase the strength of the spacer grid and stability of the coolant circulation channel under accident conditions.