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Fuel assembly and nuclear reactor core using the same

A technology for fuel assemblies and nuclear reactors, which is applied in the assembly of fuel elements, reactors, moderators/core structures, etc., and can solve problems such as limited improvement

Active Publication Date: 2012-04-25
LINGAO NUCLEAR POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this design improves the thermal margin of the core to a certain extent, the degree of improvement is still relatively limited.

Method used

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  • Fuel assembly and nuclear reactor core using the same
  • Fuel assembly and nuclear reactor core using the same
  • Fuel assembly and nuclear reactor core using the same

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Embodiment Construction

[0012] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] see figure 2 As shown in a preferred embodiment, it includes an end grid and at least two mixing grids 2 , and at least two inter-span mixing grids 3 are arranged between two adjacent mixing grids 2 . As a preferred method, the number of mixing grids 3 between the spans can be selected as 2, so that the mixing grids 3 between the spans can better exert their positive effects. Further, the mixing grid 2 and the mixing grid 3 between the spans can adopt the mixing grid 2 and the mixing grid 3 with various types of mixing sheets provided by the prior art, and the exi...

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Abstract

The invention belongs to the technical field of nuclear fuel components and the design of nuclear reactors, and provides a fuel component used for a nuclear reaction core. The fuel component consists of an end framework and at least two mixing frameworks. The end framework consists of an upper end framework and a lower end framework. The mixing frameworks are up-down alternate and are arranged between the upper end framework and the lower end framework in sequence. Two span mixing frameworks are arranged between the two adjoining mixing frameworks. The number of the mixing frameworks is six, and the above two adjoining mixing frameworks are all arranged between the third and the fourth mixing frameworks, between the fourth and the fifth mixing frameworks and the fifth mixing frameworks and the sixth frameworks, from the bottom to the top. The nuclear reaction core using the fuel component is also provided and the core comprises 157 units of the fuel components which are arranged to be 15 lines and 15 rows and are parallel with each other. Compared with the prior art, the fuel component can dramatically increase the thermal allowance of the core under normal and accident working conditions and improve the safety of nuclear power stations.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactor design, and in particular relates to a nuclear reactor core fuel assembly and also relates to a nuclear reactor core using the fuel assembly. Background technique [0002] Nuclear reactor core design is one of the key design contents of nuclear power plant, and fuel assembly is an important part of nuclear reactor core. The main task of nuclear reactor core design is to provide a nuclear reactor core that meets the physical, thermal-hydraulic and safety design requirements of PWR nuclear power plants, including determining the type, number, and arrangement of fuel assemblies in the nuclear reactor. [0003] Taking the CPR1000 pressurized water reactor nuclear power plant as an example, its core is composed of fuel assemblies. At present, the fuel assemblies of CPR1000 pressurized water reactor nuclear power plants are usually AFA-3G assemblies and full M5 AFA-3G assemblies (see figure 1 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C3/34G21C5/14
CPCY02E30/40Y02E30/30
Inventor 肖岷卢向晖
Owner LINGAO NUCLEAR POWER
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