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Flat plate type nuclear fuel component

A technology for nuclear fuel assembly and nuclear fuel, which is applied to fuel elements, fuel element assembly, nuclear engineering, etc., can solve problems such as uneven distribution of nuclear fuel cores, accidents, and nuclear fuel element damage, and achieve reasonable distribution, high coolant flow rate, The effect of high heat flux density

Inactive Publication Date: 2011-05-18
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uneven distribution of nuclear fuel cores in this kind of nuclear fuel plate, damage to nuclear fuel elements is prone to occur at the thinner cladding position, resulting in accidents

Method used

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  • Flat plate type nuclear fuel component
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  • Flat plate type nuclear fuel component

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] This embodiment discloses a flat-plate nuclear fuel assembly used in China Advanced Research Reactor (CARR).

[0026] The flat-plate nuclear fuel assembly is located in the center of the reactor active area and placed on the cone surface of the square hole of the grid plate of the reactor core. The plug of the nuclear fuel assembly is inserted into the rectangular hole of the core grid plate, and the conical surface of the plug rests on the conical surface of the grid plate. The upper part of the nuclear fuel assembly relies on the protrusion of the side plate to maintain the radial clearance fit between the standard nuclear fuel assembly and surrounding assemblies and other core components.

[0027] The flat nuclear fuel assembly includes a side plate 4 , a nuclear fuel plate 5 , and a rectangular plug 6 . The upper half of the nuclear fuel assembly is composed of...

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Abstract

The invention belongs to the technical field of nuclear fuel and particularly relates to a flat plate type nuclear fuel component. The nuclear fuel component comprises side plates, a nuclear fuel plate and a rectangular plug, wherein the nuclear fuel plate is prepared by the related method of the invention; the nuclear fuel plate is fixed on the side plates arranged on the two sides, the lower end of the nuclear fuel plate is provided with a positioning comb; the rectangular plug is inserted in a rectangular structure on the lower end of the nuclear fuel component and fixedly connected with the positioning comb which is arranged on the lower end; the nuclear fuel plate contains a jacket and nuclear fuel chips which are covered in the jacket; the thickness of the edge of each nuclear fuel chip is no more than the thickness of the middle; and the jacket is made of aluminum 6061. In the nuclear fuel plate provided by the invention, the nuclear fuel chips are distributed evenly, thus the safety risk can be reduced. The flat plate type nuclear fuel component formed by the nuclear fuel plate also has the advantages of high uranium density of the chips, high density of heat flow and high flow rate of coolant.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel, and in particular relates to a flat-plate nuclear fuel assembly. Background technique [0002] The nuclear fuel assembly is one of the most important components in the reactor core and is the core source of maintaining the power of the reactor. The plate-type nuclear fuel assembly has the advantages of high specific power, high thermal efficiency, good stability, safety and reliability. The structural forms of plate-type dispersoid nuclear fuel assemblies are slightly different in different research reactors, and the plate types include flat plate, curved plate, and involute type. [0003] In the traditional nuclear fuel assembly, the manufacturing method of its nuclear fuel plate is to form a nuclear fuel slab by welding a core block, a frame and an upper and lower cover plate, and then heat and cold rolling. The above-mentioned core block is in the shape of a cuboid, and in the manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/02G21C3/07G21C21/02G21C3/36
CPCY02E30/40Y02E30/30
Inventor 康亚伦张爱民
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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