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Small lead-cooled fast reactor core

A lead-cooled, small-scale technology, applied in the field of small-scale lead-cooled fast reactor cores, can solve problems such as failure to meet safety and sustainability requirements

Active Publication Date: 2021-06-22
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a small lead-cooled fast reactor core to solve the problem that the existing lead-cooled fast reactor core cannot meet the safety and sustainability requirements caused by the miniaturization of the core

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Embodiment Construction

[0017] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0018] The embodiment of the present invention proposes a small lead-cooled fast reactor core design, and evaluates its physical and thermal performance. Specifically, it includes: the core design objectives and related criteria for small lead-cooled fast reactors; starting from the selection of rod bundle parameters, component design and...

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Abstract

The embodiment of the invention discloses a small lead-cooled fast reactor core. The small lead-cooled fast reactor core comprises a fuel assembly, a control rod assembly, a safety rod assembly and a reflecting layer assembly, fuel rods in the fuel assembly are arranged in a square shape, and fuel is uranium-plutonium mixed oxide; the fuel assembly comprises three layers of fuel subareas, and the proportion of the number of plutonium dioxide atoms of fuel rods in the outer fuel subarea is larger than that of the number of plutonium dioxide atoms of fuel rods in the inner fuel subarea. The control rod assembly and the safety rod are made of boron carbide; the width of the reflecting layer assembly is the same as that of the fuel assembly, and the reflecting layer assembly is made of EP823 stainless steel and lead-bismuth alloy according to a preset volume ratio; the assembly wall and the cladding of each assembly are made of EP823 stainless steel; and the cooling agent is lead-bismuth alloy. According to the invention, the miniaturization requirement of the lead-cooled fast reactor core is met, the safety and sustainability requirements of the lead-cooled fast reactor core are ensured, and the design criterion is met.

Description

technical field [0001] The invention relates to the technical field of miniaturization of lead-based fast reactors, in particular to a core of a small lead-cooled fast reactor. Background technique [0002] Lead-cooled fast reactor refers to a fast neutron reactor cooled by liquid lead or lead-bismuth alloy. As one of the main types of fourth-generation reactors, the lead-cooled fast reactor can well meet the target requirements of the fourth-generation reactors. It can realize a closed fuel cycle, improve the effective use of nuclear fuel, optimize nuclear waste management and treatment processes, and help nuclear power sustainable development. [0003] At present, small lead-cooled fast reactors are needed for power supply in remote areas, but the research on the core of small lead-cooled fast reactors is insufficient, and it is difficult to meet the safety and sustainability requirements at the same time under the condition of miniaturization of the lead-cooled fast reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/20G21C3/07G21C3/62G21C15/28
CPCG21C3/20G21C3/07G21C3/623G21C15/28Y02E30/30
Inventor 刘晓晶杨冬梅柴翔张滕飞
Owner SHANGHAI JIAO TONG UNIV
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