Anti-unhooking mechanism of control rod guiding sleeve for nuclear power plant

• Main Authors: WANG WEI, ZHOU LI, MENG ZHAOYANG, LI JIANGLIN, LI HUIYI, ZHANG YUAN, GE KEDANG, SHANG YANZHI, XIAO ZHENDONG, SHAN GUANGFANG, ZHENG HAIQUAN, CAI SISAN
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2018
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention belongs to the technical field of control rod guiding sleeves, and particularly relates to an anti-unhooking mechanism of a control rod guiding sleeve for a nuclear power plant. The anti-unhooking mechanism comprises a gripping head, double-end studs, an inner rod, an outer tube and a spring, wherein the gripping head is mounted at a tail end of the outer tube by the double-end studand is relaxed; the spring is arranged in a groove in a head part of the outer tube; the inner rod penetrates through an inner diameter of the spring and is inserted into the outer tube from the headpart of the outer tube; and a positioning hole of the inner rod is connected with a guiding groove of the outer tube by another double-end stud. The anti-unhooking mechanism provided by the inventioncan protect safety of a control rod assembly and reduce safety risks of nuclear fuel operation in an event of failure of a control rod gripper mechanism or breakage of thin steel cables of a refuelingmachine. 本发明属于控制棒导向套技术领域，具体