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Detachable annular fuel test assembly

A fuel test and annular technology, applied in the field of reactor engineering, can solve the problems of waste of test resources and research and development funds, and achieve the effect of simplifying the assembly process and assembly process, saving the cycle of component manufacturing and testing, and improving the measurement accuracy.

Pending Publication Date: 2020-08-04
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

The components are connected and fixed in the form of welding. If this form of components is used to conduct tests with different test parameters under the same test conditions, such as the test of the resistance coefficient of different spacer grids, the test object needs to be replaced with a new whole after each test. Replacement of components, resulting in waste of test resources and development funds, and the use of different components for the same test conditions may result in additional test errors

Method used

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  • Detachable annular fuel test assembly
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  • Detachable annular fuel test assembly

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Embodiment Construction

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like figure 1 The shown detachable annular fuel test assembly, suitable for hydraulic simulation test, includes an upper tube seat 1 , an annular fuel simulation rod 2 , a spacer grid 3 , a guide tube 4 , an instrument tube 5 , and a lower tube seat 6 .

[0042] The upper part of the upper tube seat 1 is provided with a compression spring, which cooperates with the upper grid plate of the core to realize the compression of the annular fuel test assembly in the reactor, and can prevent the annular fuel test assembly from moving in the core.

[0043] The annular fuel simulation rod 2 includes an upper end plug, a lower end plug, an inner cladding shell, and an outer shell. The inner cladding shell and the outer shell are coaxially nested, and an upper end plug is arranged above the inner cladding shell and the outer casing, and a ...

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Abstract

The invention relates to the technical field of reactor engineering, and relates to a detachable annular fuel test. The detachable annular fuel test assembly is characterized in that a upper pipe seatand a guide pipe connecting pipe, a guide pipe and the guide pipe connecting pipe, an internal annular fuel simulation rod and a lower pipe seat, the guide pipe and a lower pipe seat, the lower pipeseat and the lower pipe seat support legs and the like are fixedly connected through screws; the detachable function is achieved, part of components can be replaced according to related requirements of tests, new assemblies do not need to be replaced, and the test and manufacturing cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of reactor engineering, in particular to a detachable annular fuel test assembly. Background technique [0002] The fuel assembly is one of the most important components in the reactor core, and its performance directly affects the economics of nuclear power plants, the goals of sustainable development and indirectly the safety goals. [0003] The benefits of annular fuels compared to traditional solid cylindrical fuels are that at very high linear power densities, the temperature in the center of the fuel remains low, there is less energy storage within the fuel, less fission gas release, and normal operation can be expected and better fuel performance under transient conditions. [0004] In order to ensure the safe use of the annular fuel assembly in the reactor, a large number of performance tests are required to verify its safety and reliability after the structural design is completed. Among them, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/00
CPCG21C17/001Y02E30/30
Inventor 季松涛何晓军史宝磊张爱民徐西安韩智杰邹远方刁均辉
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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