Novel reactor core barrel structure

Abstract

The invention discloses a novel reactor core barrel structure used for a pressure vessel of a pressurized water reactor. The novel reactor core barrel structure at least includes upper support flanges(1), an upper cylinder (2), a lower cylinder (4), lower inner flanges (6) and a lower core plate (5). Specifically, the upper support flanges (1) are at least provided with hoist holes (10), the upper cylinder (2) is fixed to the upper support flanges (1), and circumference is provided with multiple layers of drain holes (20), the lower cylinder (4) is fixed to the bottom of the upper cylinder (2), the upper ends of the lower inner flanges (6) are fixed to the bottom of the lower cylinder (4), the upper surfaces of the lower inner flanges (6) are equipped with support steps (60), and the lower core plate (5) is placed on the support steps (60) and is fixed to the lower inner flanges (6). The novel reactor core barrel structure provided by the invention has the advantages of simple and firm structure, easy lifting, convenience for rod drop, etc.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a novel core hanging basket structure. Background technique [0002] In the core of the existing pressurized water reactor, it is necessary to use the hanging basket assembly to realize the dropping of the control rods. However, the existing hanging basket assembly generally adopts a concentrated flow hole. In the process of realizing the work, the lateral flow generated by the centralized outlet due to suction; if the load reaches a certain level, the control rod guide cylinder assembly will be bent; another On the one hand, the lateral action will cause the friction force between the control rod and the guide cylinder to increase, which is not conducive to the drop of the control rod. [0003] Therefore, how to provide a core basket assembly with better performance becomes a problem to be solved. Contents of the invention [0004] The technical problem to be solved by...

AI Technical Summary

Problems solved by technology

However, the existing hanging basket assembly generally adopts a concentrated flow hole. In the process of realizing the work, the lateral flow generated by the centralized outlet due to suction; if the load reaches a certain level, the control rod guide cylinder assembly will be bent; another On the one hand, the lateral action will cause the friction between the control rod and the guide cylinder to increase, which is not conducive to the drop of the control rod.

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