Sodium-cooled-fast-reactor-structure-based material irradiation capsule

Abstract

The utility model relates to a measurement apparatus using nuclear radiation inside a reactor to measure a material irradiation performance. In order to solve a problem of lack of convenient and applicable sodium-cooled-fast-reactor-structure-based material irradiation capsule, the invention provides a sodium-cooled-fast-reactor-structure-based material irradiation capsule comprising an outer cylinder body, an inner cylinder body, and a central tube; and the central tube is arranged at the center inside the inner cylinder body. A sample placing region is arranged between the central tube and the inner cylinder body. A joint is arranged at the opening end of the inner cylinder body. The outer cylinder body is arranged outside the integrated structure; and an outer end cover is arranged at the top end. The inside of the inner cylinder body is filled with liquid sodium; and space between the inner cylinder body and the outer cylinder body is filled with helium. The connecting way is realized by welding. With the sodium-cooled-fast-reactor-structure-based material irradiation capsule, the problem of lack of convenient and applicable sodium-cooled-fast-reactor-structure-based material irradiation capsule in the prior art can be solved. The minimum sample number required by the standard testing requirement can be met by one-time test. Moreover, the structure is design reasonably; and the capsule can be used conveniently and has the non-on-line test parameter monitoring function.

Description

technical field [0001] The invention relates to a measuring device for measuring the radiation properties of materials by using reactor nuclear radiation, in particular to a sodium-cooled fast reactor structural material irradiation tank. Background technique [0002] The radiation performance of materials is one of the most important performances of materials in nuclear power plants. New materials used in any radiation site in nuclear power plants need to undergo radiation tests to master their radiation performance. [0003] The fast neutron field produced by nuclear fission in the fast neutron research reactor provides an irradiation site for accelerating the completion of the nuclear material irradiation test. To carry out material irradiation tests, it is necessary to combine the irradiation conditions of the research reactor and develop a unique irradiation device according to the specific requirements of the sample size, irradiation temperature and damage dose of the...

AI Technical Summary

Problems solved by technology

[0007] Due to the particularity of the structure of the sodium-cooled fast reactor, the first consideration should be the irradiation tank for off-line measurement. However, since the technology of the sodium-cooled fast reactor is still in development, the open literature available for reference is extremely limited, and no suitable one has been found so far. Therefore, based on actual needs, a convenient and applicable sodium-cooled fast reactor structural material irradiation tank should be developed

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