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Shielding structure, shielding assembly and sodium-cooled fast reactor

A shielding structure, sodium-cooled fast reactor technology, applied in the field of nuclear reactors, can solve the problems of poor shielding effect and high radiation dose

Pending Publication Date: 2021-05-07
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the in-core shielding of sodium-cooled fast reactors has defects such as poor shielding effect and high radiation dose.

Method used

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  • Shielding structure, shielding assembly and sodium-cooled fast reactor
  • Shielding structure, shielding assembly and sodium-cooled fast reactor
  • Shielding structure, shielding assembly and sodium-cooled fast reactor

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Embodiment Construction

[0062] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Apparently, the described embodiment is one embodiment of the present invention, but not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0063] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application shall have the usual meanings understood by those skilled in the field of the present invention. For ease of description, spatially relative terms such as "above", "below", "upper end", "lower end" etc. may be used herein, only to describe the ...

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Abstract

The invention discloses a shielding structure, a shielding assembly and a sodium-cooled fast reactor. The shielding structure comprises a plurality of circles of shielding pieces arranged in the radial direction of the shielding structure, wherein each circle of shielding piece is composed of a plurality of graphite shielding rods forming a circle in a surrounding mode, each graphite shielding rod is formed by splicing a plurality of graphite rods in the axial direction, and the splicing seam positions of the graphite shielding rods arranged in the radial direction of the shielding structure are not completely the same. According to the technical scheme, part of neutrons escaping outwards from the abutted seam position of the graphite rod can be reduced, and the dosage level of the sodium-cooled fast reactor body is reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a reactor shielding structure, a shielding assembly and a sodium-cooled fast reactor. Background technique [0002] The sodium-cooled fast reactor is a fast neutron reactor with liquid sodium as the coolant. It is the most mature and most experienced reactor type among the fourth-generation reactors. The in-core shielding of the sodium-cooled fast reactor is mainly used to reduce the dose level of the neutron flux to the reactor vessel, reactor pit, and secondary loop coolant. At present, the in-core shielding of sodium-cooled fast reactors has defects such as poor shielding effect and high radiation dose. Contents of the invention [0003] The purpose of the first aspect of the present invention is to provide a new shielding structure to improve the neutron shielding effect of the shielding structure in the reactor in view of the defects existing in the prior art. ...

Claims

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Application Information

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IPC IPC(8): G21C11/02
CPCG21C11/022G21C11/028Y02E30/30
Inventor 夏宇刘兆阳徐海涛燕春光孙帅王事喜王毅孙刚邓夏王明政张东辉吴水金杨孔雳
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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