Cushion block for relieving wear defect of thermal sleeve of control rod driving mechanism and mounting method

• Main Authors: ZHOU WEI, ZHOU RUIDONG, FAN WEIFENG, CHENG LONG, XIE XIUJUAN, SHEN JIAWEI, QI HONGCHANG, LIN QIN, CHEN HONGWEI, LU SHAOWEI, ZHANG DAWEI, GE LIANWEI, MENG WEIMIN, HE JIAHUAN
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: BLASTING; CONSTRUCTIONAL ELEMENTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; PIPES; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention belongs to the technical field of control rod driving mechanisms, and particularly relates to a control rod driving mechanism heat insulation sleeve abrasion defect relieving cushion block and an installation method. Comprising a plurality of cushion block assemblies, and each cushion block assembly comprises a cushion block, a mounting bolt and a locking sleeve. The method has the beneficial effects that the problem of wear defects of the heat insulation sleeve of the control rod driving mechanism of the pressurized water reactor unit can be solved, wear between the end of the heat insulation sleeve and the sleeve base can be relieved, the service life of components in a nuclear first-level equipment reactor is prolonged, a whole-life and lifelong solution is provided for common hidden dangers in the field of the nuclear power industry, and the method is suitable for popularization and application. The method is a relatively simple and feasible relieving means, and the design leaving problem is