公开(公告)号：EP3086324B1

公开(公告)日：2019-03-20

申请号：EP13899373.8

申请日：2013-12-20

申请人： China Nuclear Power Technology Research Institute Co., Ltd ,  China General Nuclear Power Co., Ltd

发明人： YU, Wenchi ,  LI, Weicai ,  HU, Haixiang ,  WANG, Jiayuan

IPC分类号： G21C3/32 ,  G21C3/33

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.

公开(公告)号：EP4280227A1

公开(公告)日：2023-11-22

申请号：EP22748792.3

申请日：2022-01-05

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

发明人： XUE, Zhe ,  PANG, Zhengzheng ,  LI, Weicai

IPC分类号： G21C7/103 ,  G21C7/10 ,  G21C7/11

摘要： A control rod absorber assembly (1), a control rod (3) and a control rod assembly. The control rod absorber assembly (1) comprises a first absorber (11), a second absorber (12) and a stress transmission assembly (13), wherein the stress transmission assembly (13) is arranged around the periphery of the second absorber (12) and forms a stress combination together with the second absorber (12), and a receding space (2) for accommodating the second absorber (12) when the second absorber expands in a radial direction is provided between the stress transmission assembly (13) and the periphery of the second absorber (12); and the first absorber (11) and the stress combination are configured to be mounted in a cladding tube (31) of a control rod (3), the first absorber (11) and the stress combination are arranged in an axial direction of the cladding tube (31),and the first absorber (11) is located above the stress combination and is configured for pressing the stress combination downwards. By arranging the stress transmission assembly (13), the second absorber (12) does not bear the action of gravity of the first absorber (11), so as to reduce compression creep of the second absorber (12); and when the second absorber (12) absorbs neutrons and expands in the radial direction, an expanded portion can be accommodated in a receding space (2), so as to prevent a cladding tube (31) from being damaged.