Abstract
The pressure shell seal structure is an important part of the control rod drive mechanism, and it is also one of the key structures to ensure the normal operation, safety and reliability of the reactor. In this paper, a new type of sealing structure of pressure shell of control rod drive mechanism is proposed to meet the requirements of multiple loading and unloading in special marine environment. Compared with the traditional welding connection structure, it has the advantages of fast and convenient operation, easy replacement of sealing components and so on. It can greatly shorten the loading and unloading time of control rod drive mechanism in the refueling process and avoid damage.
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