Reactor internal suitable for supercritical water-cooled reactor two-flow core

Abstract

The invention discloses a reactor internal suitable for a supercritical water-cooled reactor two-flow core. The reactor internal comprises a basket barrel, a lower core plate, a flow collecting cavity shell, a pressing barrel, an upper core plate, a lower supporting plate and an upper coaming, wherein an upper cavity is formed in an area in the pressing barrel and above the lower supporting plate; a mixed cavity is formed among the upper coaming, the lower supporting plate and the core upper plate; the lower supporting plate is provided with a water through hole communicated with the upper cavity and the mixed cavity; the upper coaming, the lower supporting plate, the upper core plate and the pressing barrel form an annular steam outlet cavity; the pressing barrel is connected with an outlet inner sleeve which is communicated with a steam outlet cavity and penetrates through the basket barrel; a flow collecting cavity is formed between the lower core plate and the flow collecting cavity shell; the flow collecting cavity shell is provided with a plurality of openings communicated with the flow collecting cavity; and peripheral openings are formed in the upper parts of the basket barrel and the pressing barrel. By adoption of the two-flow structure, the thermal efficiency is guaranteed, and the structure safety and the structure reliability can be guaranteed.

Description

technical field [0001] The invention relates to an internal component of a supercritical water-cooled reactor, in particular to an internal component suitable for a dual-process core of a supercritical water-cooled reactor. Background technique [0002] The supercritical pressurized water reactor is an advanced fourth-generation reactor that uses light water as the coolant and operates above the critical point of water. At present, the commonly used supercritical water-cooled reactor is a supercritical water-cooled reactor with a single-flow or three-flow structure. The supercritical water-cooled reactor with a single-flow structure has a simple internal structure, but its thermal efficiency is low, and the core power density has a large gradient. The core of supercritical water-cooled reactor with three-flow structure is evenly distributed in the axial direction, but the internal structure of the reactor is very complex. Too many flows will reduce the natural circulation c...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of low thermal efficiency or low safety factor of the core in the existing supercritical water-cooled reactor internals, and provide a reactor internals suitable for supercritical water-cooled reactor dual-flow cores. Ensure the safety and reliability of the structure while ensuring thermal efficiency

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