公开(公告)号：EP4261845A1

公开(公告)日：2023-10-18

申请号：EP21902720.8

申请日：2021-12-10

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

发明人： LU, Zhaohui ,  CHEN, Yeqing ,  JIN, Shuwu ,  LI, Zewen ,  LIU, Yanan ,  LIU, Qingsong ,  ZHOU, Guofeng ,  RUI, Min ,  TANG, Shujian ,  LU, Guangyao ,  HU, Lunbao ,  ZHANG, Chao ,  QIAO, Jianyi ,  SU, Xiaowei

IPC分类号： G21C19/105 ,  G21C19/02 ,  G21C7/14

摘要： The present invention provides a control rod driving mechanism (100) with safety protection function, including a rod position detector assembly, a pressure-resistant housing assembly, a claw assembly, a driving lever assembly, a coil assembly and a safety protection device. The safety protection device includes a fixing magnetic pole, a locking coil, a spring, a movable armature, a claw and a transition support sleeve, wherein a sealing housing is coupled to the transition support sleeve via the fixing magnetic pole, the transition support sleeve is coupled to the claw assembly, the movable armature is slidably arranged in the transition support sleeve. One end of the spring elastically abuts against the movable armature, and the other end of the spring elastically abuts against the fixing magnetic pole or the transition support sleeve. The claw is mounted on the transition support sleeve and linked with the movable armature, and the driving lever assembly penetrates the transition support sleeve and the fixing magnetic pole. The locking coil is mounted on the coil assembly and the movable armature slides axially such that the claw pivotally swings for engaging with or releasing from the driving rod assembly, to achieve a reliable safety protection function and realize safe shutdown of the reactor