Nuclear reactor core layout of a nuclear power plant

Abstract

The invention belongs to a nuclear reactor core arrangement, and in particular relates to a nuclear reactor core arrangement of a 100,000-kilowatt nuclear power plant. A nuclear reactor core arrangement of a nuclear power plant, the core includes three kinds of nuclear fuel rods with different enrichment degrees, the nuclear fuel assemblies with the lowest enrichment degree and the intermediate enrichment degree are distributed in the core at intervals, and the nuclear fuel assemblies with the highest enrichment degree It is arranged outside the core, and a reflective layer is arranged on the periphery. The advantage of the present invention is that, because the core power density of the present invention is low and the thermal safety margin is relatively high, the core is composed of three kinds of nuclear fuel assemblies with different enrichment degrees, and the fuel rods are axially partitioned, which is beneficial to the development Flat core power. The nuclear power plant using this core will greatly improve its operational safety. And because the reactor core is small, the construction cost of the nuclear power plant using this core is low, which is conducive to modular construction.

Description

technical field [0001] The invention belongs to a nuclear reactor core arrangement, and in particular relates to a nuclear reactor core arrangement of a 100,000-kilowatt nuclear power plant. Background technique [0002] Fuel assemblies are an important part of a nuclear reactor core. Nuclear reactor core layout is one of the key design elements of nuclear power plants. The main task of nuclear reactor core design is to meet the overall design requirements of the pressurized water reactor nuclear power plant from the perspective of nuclear reactor physics, including determining the number and type of fuel assemblies and the arrangement of fuel assemblies in the nuclear reactor core. [0003] The current commercial power plants are basically in the million-kilowatt class, with a large number of core components, which have high construction costs and are not conducive to modular construction; their power density is relatively high, and their thermal safety margins are relativ...

AI Technical Summary

Problems solved by technology

[0003] The current commercial power plants are basically in the million-kilowatt class, with a large number of core components, which have high construction costs and are not conducive to modular construction; their power density is relatively high, and the thermal safety margin is relatively low

Images