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Irradiation device

An irradiation device and irradiation technology, applied in the field of reactor irradiation, can solve problems such as temperature differences and achieve the effect of eliminating temperature differences

Pending Publication Date: 2021-08-27
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this disclosure is to provide an irradiation device that can solve the problem of temperature differences in the axially distributed irradiated samples in the irradiation test

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment one: rapid temperature rise. By adjusting the heating components to raise the temperature, the temperature required for the irradiation test can be quickly reached, and after the temperature is stable, argon gas is introduced to keep it warm. This temperature control method is mainly based on heating components, supplemented by gas insulation;

Embodiment 2

[0044] Embodiment two: slowly heat up. First pass in argon gas for heat preservation. After the temperature is stable, slowly adjust the heating power of the heating component until it reaches the temperature required for the irradiation test. This temperature control method is mainly based on gas insulation, supplemented by temperature adjustment of heating components;

Embodiment 3

[0045] Embodiment three: slow cooling. It can be realized by slowly adjusting the gas composition (for example, increasing the proportion of helium in the mixed gas), or slowly adjusting the heating power of the heating component.

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PUM

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Abstract

The present disclosure relates to an irradiation device, the irradiation device comprises a shell, a sample tank and a heating assembly; the interior of the shell is hollow, and the shell is used for being placed in a reactor; the sample tank is used for being inserted into the shell in a removable mode, the axis direction of the sample tank is parallel to the length direction of the shell, and an irradiation sample is arranged in the sample tank in the axis direction of the sample tank; the heating assembly is used for being arranged in the shell and comprises at least two heating units arranged in the axis direction, each heating unit is used for independently conducting heat exchange with the irradiation sample at the corresponding position through the side wall of the sample tank, and the at least two heating units comprise the first heating unit and the second heating unit; and the sample tank is provided with a first end and a second end which are opposite in the axis direction, the first heating unit is used for conducting heat exchange with the irradiation sample close to the first end of the sample tank, and the second heating unit is used for conducting heat exchange with the irradiation sample close to the second end of the sample tank. According to the invention, the problem of temperature difference of irradiation samples axially distributed in an irradiation test can be solved.

Description

technical field [0001] The present disclosure relates to the technical field of reactor irradiation, and in particular, to an irradiation device. Background technique [0002] Before the materials used in nuclear reactors are officially used, they must pass the in-reactor radiation test to verify whether their radiation resistance performance meets the requirements for use. The in-reactor radiation test of materials must be carried out under certain technical conditions. One of the important indicators is is the irradiation temperature of the irradiated sample. In the related art, the irradiated material is processed into an irradiated sample that satisfies various performance tests, and then loaded into an irradiating device and entered into a stack. Due to the difference in the neutron injection amount in the axial direction of the reactor, the neutron fluence received by the irradiation device in the axial direction is different, and accordingly the irradiation temperatu...

Claims

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Application Information

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IPC IPC(8): G21K5/00G21K5/08G21C19/20
CPCG21K5/00G21K5/08G21C19/20Y02E30/30
Inventor 刘磊李强袁建东刘天才毕可明
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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