A compact nuclear reactor with multi-mode operation

Abstract

The invention discloses a multi-mode operation compact nuclear reactor, and belongs to the technical field of nuclear reactor design. For reactor critical and sub critical operation, the sub critical transmutation and critical yield functional switching is completed through spallation target introduction and moving-out and reactor core layout change; the sub critical degree regulation is completed. Beryllium softening neutrons are added in a long-service-life fission product transmutation region in the reactor core for reaching the requirements of long-service-life fission product high transmutation requirements; meanwhile, uranium 238 is added in the minor actinide element transmutation region for compensating the reaction performance reduction due to minor actinide element and plutonium combustion consumption. In the sub critical and critical switching process, through the matching of the spallation target, an assembly pipe pin of the reactor core and a layered grid plate connected box, the reactor general flowing is matched; the operation parameter consistency of the critical and sub critical systems can be maintained. The multi-mode operation compact nuclear reactor is based on the reactor layout change and multilayer flow rate distribution technology, and realizes the reactor multi-mode operation; the reactor universality is good; high engineering significance is realized.

Description

Technical field [0001] The invention relates to the technical field of nuclear reactor design, in particular to a compact nuclear reactor operating in multiple modes. Background technique [0002] Nuclear reactors are divided into critical reactors and subcritical reactors according to different operating modes. The former is mainly traditional nuclear reactors and six types of third-generation nuclear energy systems, and the latter is mainly accelerator-driven subcritical nuclear energy systems (ADS). But at present, the functions of nuclear reactors are relatively single. Critical reactors are mainly used for production capacity, while subcritical reactors are mainly used for transmutation. Different designs are adopted to meet different needs. This makes critical and subcritical technologies not universal, especially the core layout and flow distribution are significantly different. Summary of the invention [0003] In view of this, the present invention provides a compact nuc...

AI Technical Summary

Problems solved by technology

However, at present, the functions of nuclear reactors are relatively single, critical reactors are mainly used for production capacity, and subcritical reactors are mainly used for transmutation; different designs are adopted to meet different needs

This makes the critical and subcritical technologies not universal, especially the core layout and flow distribution are significantly different

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