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Comprehensive mechanical property test device of fuel assembly and test method thereof

A fuel assembly, comprehensive mechanics technology, applied in the direction of measurement device, analysis material, strength characteristics, etc., can solve the problem of no fuel assembly comprehensive mechanical performance test device patent, no fuel assembly comprehensive mechanical performance test device description and other problems, to avoid The effect of test data inaccuracy and ensuring measurement accuracy

Active Publication Date: 2014-04-02
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Judging from the current patent novelty search, there is no related patent on the test device for the comprehensive mechanical properties of fuel assemblies, and there is no description of the test device for the comprehensive mechanical properties of fuel assemblies from the published literature at home and abroad.

Method used

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  • Comprehensive mechanical property test device of fuel assembly and test method thereof
  • Comprehensive mechanical property test device of fuel assembly and test method thereof
  • Comprehensive mechanical property test device of fuel assembly and test method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as Figure 1 to Figure 5 shown.

[0047] The fuel assembly comprehensive mechanical performance test device includes a horizontal support platform 9 and a vertical support platform 10 placed on the horizontal support platform 9; a base 3 is installed on the horizontal support platform 9, and at least 3 axes perpendicular to the horizontal are installed on the base 3 The loading column 8 on the upper surface of the support platform 9, the base 3 is equipped with at least two measuring columns 2 whose axes are perpendicular to the upper surface of the horizontal support platform 9; The support platform is connected, and the end of the loading column 8 away from the base 3 runs through the loading top plate 1, and the loading top plate 1 is provided with a through hole for placing the fuel assembly under test.

[0048] The design principle of the present invention is: the present invention is specially configured as the above-mentioned device according to the charact...

Embodiment 2

[0062] Experimental methods, including component tension and compression tests, the specific experimental steps are:

[0063] A1. Lift the tested fuel assembly 4 vertically through the through hole for the tested fuel assembly. After the lower end of the tested fuel assembly 4 is fixed on the base, install the vertical loading mechanism 5 in place from above the loading top plate 1. The upper end of the fuel assembly 4 is connected with the output end of the vertical loading mechanism 5, and the verticality of the measured fuel assembly 4 is adjusted; preferably, the lower end of the measured fuel assembly 4 is fixed with the pin on the clamp on the base; it is connected with the measuring column An eddy current displacement sensor or a differential transformer type displacement sensor or a laser displacement sensor is arranged on the limit device; the surface of the measured fuel assembly 4 is attached with a strain gauge for measuring assembly strain, etc.

[0064] B1. Apply...

Embodiment 3

[0067] Such as figure 1 with figure 2 As shown, the described experimental method also includes the component torsion test, and its specific experimental steps are:

[0068] A2. Hang the tested fuel assembly 4 vertically through the through-hole of the tested fuel assembly. After the lower end of the tested fuel assembly 4 is fixed to the base, install the torsional loading mechanism 6 on the loading top plate. The upper end is connected to the output end of the torsion loading mechanism 6; an eddy current displacement sensor or a differential transformer type displacement sensor or a laser displacement sensor is arranged on the limit device connected to the measuring column; the surface of the measured fuel assembly 4 is attached with a measuring assembly Strain gauges, etc.

[0069] B2. Apply torsional force to the tested fuel assembly 4 through the torsion loading mechanism 6, measure the rotation angle and lateral deformation index of the tested fuel assembly 4 at the s...

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Abstract

The invention discloses a comprehensive mechanical property test device of a fuel assembly and a test method thereof. The comprehensive mechanical property test device of fuel assembly comprises a horizontal supporting platform (9) and a vertical supporting platform (10) placed on the horizontal supporting platform (9), wherein a base (3) is installed on the horizontal supporting platform (9), at least three loading upright posts (8) with axial lines vertical to the upper surface of the horizontal supporting platform (9) are installed on the base (3), and at least two measuring upright posts (2) with axial lines vertical to the upper surface of the horizontal supporting platform (9) are installed on the base (3); a loading head plate (1) is arranged above the base (3), the loading head plate (1) is connected with the vertical supporting platform through a connecting element, and the ends away from the base (3) of the loading upright posts (8) penetrate through the loading head plate (1). The comprehensive mechanical property test device disclosed by the invention can be installed at one time and finish a variety of tests. The device is convenient to install and operate and is easy to detach, and the test steps are few.

Description

technical field [0001] The invention relates to a device for testing the comprehensive mechanical properties of fuel assemblies, in particular to a device which adopts a four-column bearing frame structure and can be used for testing the mechanical properties of fuel assemblies. The device can be used for mechanical performance tests such as tension, compression, torsion, bending, drop and wall rebound of reactor fuel assemblies. Background technique [0002] Nuclear power plant reactor fuel assemblies are composed of fuel rods, upper nozzle parts, lower nozzle parts, end grids, mixing grid parts, guide tube parts, flux measuring tubes, etc. There are multi-layer positioning grids on the fuel assembly. The spacer grid is welded on the guide tube, and the fuel rods are fixed by internal springs to form a fuel assembly. The mechanical properties of fuel assemblies are directly related to the integrity and safety of fuel assemblies. According to relevant nuclear safety regulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/20G01N3/22G01N3/303G01N3/30
Inventor 张勇马建中李朋洲陈祯李天勇李琦黄文
Owner NUCLEAR POWER INSTITUTE OF CHINA
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