A Design Method for Hexagonal Accelerator-Driven Subcritical Reactor Fuel Assembly

An accelerator-driven and fuel assembly technology, applied in the field of nuclear engineering, can solve the problems of low neutron performance and achieve the effect of improving economic efficiency and neutron multiplication performance
CN109559835BActive Publication Date: 2020-03-20NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2020-03-20

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Abstract

A hexagon accelerator driven subcritical reactor fuel assembly and a design method thereof are disclosed. The assembly includes a hexagon base the top surface of which is provided with a plurality ofbase units for fuel rod mounting, with one of the base units being at the center of the base, other base units surrounding the center base unit and being arranged in an annular array manner, distancesbetween adjacent base units being equal; a shell including a prismatic sleeve the cross section of which adapts to the shape of the base and the bottom of which is mounted on the base; an inner sleeve including a prismatic sleeve, disposed inside the shell with a gap between the inner sleeve and the shell, with the bottom of the inner sleeve being mounted on the base; and a plurality of fuel rods, wherein each fuel rod includes a cylindric casing and a core rod in the casing and made of fuel, the bottom of each casing is mounted in one base unit, and the number of the fuel rods is equal to the number of the base units. The assembly and the method are used for solving a problem that neutron performance is poor, and technical effects that economic performance and neutron performance are high are achieved.
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Description

technical field

[0001] The invention relates to the technical field of nuclear engineering, in particular to a hexagonal accelerator-driven subcritical reactor fuel assembly and a design method thereof. Background technique

[0002] With the rapid growth of my country's economy, the demand for energy, especially the demand for nuclear energy, has increased sharply, which has led to the rapid growth of the installed capacity of pressurized water reactor nuclear power plants in my country, and the accumulation of nuclear waste has increased rapidly. The problem of nuclear waste disposal, especially in spent fuel The handling of minor actinides has always been a worldwide problem. In order to solve this problem, an advanced closed fuel cycle, that is, the separation-transmutation (PT) strategy has been proposed internationally. Among them, the Accelerator Driven Sub-critical System (ADS) is an ideal device for transmuting nuclear waste and producing energy. , with good resource ...

Claims

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