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Rod-shaped nuclear fuel element based on 3D printing and sealing forming method thereof

A nuclear fuel element, 3D printing technology, applied in the field of nuclear power, can solve problems such as poor sealing performance of cladding and end plugs, and achieve the effect of increasing uranium loading, ensuring accuracy, and ensuring sealing effect

Pending Publication Date: 2020-11-17
XI AN JIAOTONG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a rod-shaped nuclear fuel element based on 3D printing and its sealing and forming method, which can solve the problems caused by the poor sealing performance of the cladding and end plugs of the existing rod-shaped nuclear fuel elements. safe question

Method used

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  • Rod-shaped nuclear fuel element based on 3D printing and sealing forming method thereof

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Effect test

Embodiment 1

[0016] A 3D printing sealing forming method for a rod-shaped nuclear fuel element, comprising the following steps:

[0017] 1) Mix short carbon fibers with a particle size of 100 μm, 40 μm, 20 μm and 5 μm at a mass ratio of 2:4:1.5:2.5, and the length of the short carbon fibers is 5 to 10 μm to obtain fiber powder for 3D printing. The configured carbon fiber powder Mix with photosensitive resin adhesive in a mass ratio of 1:3 to obtain 3D printing ink;

[0018] 2) Establish a three-dimensional CAD model of the cladding sealing ring, establish the movement trajectory of the rod-shaped nuclear fuel element, and match it with the scanning path. The movement trajectory of the rod-shaped nuclear fuel element rotates around the center hole 6, and the scanning path revolves around the rod-shaped nuclear fuel element. 3D printer The nozzle remains stationary.

[0019] 3) Import the production data of the cladding sealing ring into a 3D printer, and use the printing ink prepared in st...

Embodiment 2

[0023] A 3D printing sealing forming method for a rod-shaped nuclear fuel element, comprising the following steps:

[0024] 1) Mix short carbon fibers with a particle size of 100 μm, 40 μm, 20 μm and 5 μm at a mass ratio of 2:4:1.5:2.5, and the length of the short carbon fibers is 5 to 10 μm to obtain fiber powder for 3D printing. The configured carbon fiber powder Mix with photosensitive resin adhesive in a mass ratio of 1:2.5 to obtain 3D printing ink;

[0025] 2) Establish a three-dimensional CAD model of the cladding sealing ring, establish the movement trajectory of the rod-shaped nuclear fuel element, and match it with the scanning path. The movement trajectory of the rod-shaped nuclear fuel element rotates around the center hole 6, and the scanning path revolves around the rod-shaped nuclear fuel element. 3D printer The nozzle remains stationary.

[0026] 3) Import the production data of the cladding sealing ring into a 3D printer, and use the printing ink prepared in ...

Embodiment 3

[0031] A 3D printing sealing forming method for a rod-shaped nuclear fuel element, comprising the following steps:

[0032] 1) Mix short carbon fibers with a particle size of 100 μm, 40 μm, 20 μm and 5 μm at a mass ratio of 2:4:1.5:2.5, and the length of the short carbon fibers is 5 to 10 μm to obtain fiber powder for 3D printing. The configured carbon fiber powder Mix with photosensitive resin adhesive in a mass ratio of 1:4 to obtain 3D printing ink;

[0033] 2) Establish a three-dimensional CAD model of the cladding sealing ring, establish the movement trajectory of the rod-shaped nuclear fuel element, and match it with the scanning path. The movement trajectory of the rod-shaped nuclear fuel element rotates around the center hole 6, and the scanning path revolves around the rod-shaped nuclear fuel element. 3D printer The nozzle remains stationary.

[0034] 3) Import the production data of the cladding sealing ring into a 3D printer, and use the printing ink prepared in st...

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Abstract

The invention discloses a nuclear fuel element sealing forming method based on 3D printing, and belongs to the technical field of nuclear power. SiC is adopted as a cladding material of a fuel element; a sealing ring is formed between a cladding and an end plug through a 3D printing method and a laser cladding technology. The cladding is made of a SiC ceramic material; the SiC sealing ring and theSiC cladding are well matched, and therefore, the sealing performance of the cladding and the end plug can be ensured, the operating temperature of a fuel core body and the energy storage of a reactor core are reduced, and the safety of the rod-shaped nuclear fuel element is improved. The nuclear fuel element is reasonable in design and easy and convenient to operate, the sealing ring and the SiCcladding are well matched, and the sealing performance of the rod-shaped nuclear fuel element can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of nuclear power, and relates to a rod-shaped nuclear fuel element based on 3D printing and a sealing forming method thereof. Background technique [0002] Nuclear fuel elements are the energy source of nuclear power plants and the core components of nuclear reactors. The environmental conditions of the fuel elements in the reactor are radiation field, temperature field, velocity field and certain external pressure, etc., and the working environment is very harsh. For structural materials such as fuel element cladding and end plugs, in addition to the damage caused by irradiation, they must also bear the stress, strain, corrosion, etc. caused by the dimensional change of the core material. [0003] Light water reactors are the main reactor type of nuclear power plants, using rod-shaped nuclear fuel elements. The active rod-shaped nuclear fuel element is composed of short cylindrical fuel pellets, cladding,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C21/08
CPCG21C21/08Y02E30/30
Inventor 陈义李聪邱绍宇鲁中良孙超丁阳张瑞谦尤李鸣苗恺潘小强同治强朱勇辉朱丽兵李涤尘
Owner XI AN JIAOTONG UNIV
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