Processing method of heat pipe cooling reactor core

Abstract

The invention discloses a processing method of a heat pipe cooling reactor core, and relates to the technical field of heat pipe cooling reactors, in the method, a fuel rod and a heat pipe are sequentially assembled in a base body, and powder is filled between the fuel rod and the base body and between the heat pipe and the base body. The space between the fuel rod and the base body and the space between the heat pipe and the base body are filled with the powder, and the heat transfer efficiency is improved; the effective heat conductivity coefficient of the powder filling gap is high, so that the temperature difference between the reactor core matrix and the heat pipe can be reduced, and the safety margin of the reactor is improved; the filled powder has fluidity, can effectively absorb thermal expansion of the reactor core matrix and the heat pipe, and reduces contact stress of the reactor core matrix and the heat pipe.

Description

Technical field [0001] The present invention relates to heat the reactor tube was cooled technical field, and particularly to a method for processing a heat pipe cooling of the reactor core. Background technique [0002] A solid heat pipe cooling the reactor core, the fuel rods and the heat pipe are sequentially fitted in a solid matrix, therefore, inevitably exist a gap between the heat pipe assembly, the fuel rods and the matrix, such as the specific attachment structure figure 1 Indicated. [0003] Reactor operation, the heat generated from the fuel rods, to the heat transfer tubes through fitting gap with the substrate, a heat pipe to transfer heat to the thermoelectric conversion system, thereby completing the thermal to electrical energy conversion. In the prior art, a multi-gap assembly of a vacuum atmosphere, when the structure does not produce contact between the heat transfer depends on the thermal radiation, there is a lot of resistance, so that the temperature differe...

AI Technical Summary

Problems solved by technology

In the prior art, the assembly gap is mostly a vacuum environment. When there is no contact between the structures, the heat transfer depends on the heat radiation, so there is a large thermal resistance, so that the temperature difference between the fuel rod and the heat pipe is too large, reducing the reactor safety margin

If the size of the assembly gap is reduced, the thermal resistance between the assemblies will be reduced to a certain extent because the structures are more likely to be in contact; Excessive contact stress between them can lead to reactor safety issues

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