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A seismic test method for full-scale fuel assemblies

A technology of fuel assembly and anti-seismic test, which is applied in the direction of machine/structural component testing, vibration testing, measuring devices, etc., can solve the problem of no direct alignment of full-scale fuel assemblies, and achieve the effect of real data

Active Publication Date: 2022-05-10
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for anti-seismic testing of full-scale fuel assemblies to solve the technical problem in the prior art that there is no device or method for directly performing anti-seismic tests on full-scale fuel assemblies

Method used

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  • A seismic test method for full-scale fuel assemblies
  • A seismic test method for full-scale fuel assemblies
  • A seismic test method for full-scale fuel assemblies

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Embodiment approach

[0101] Such as figure 1 , figure 2 and Figure 10 As shown, as an optional embodiment of the present invention, the pretension mechanism 3 includes a pressure plate 31, an adjusting bolt 32 and a pretension groove 33; the pretension groove 33 is opened on the upper core plate 22 and corresponds to the top of the fuel assembly The position of the plate spring 900, the pressure plate 31 is anchored on the top of the upper core plate 22 and covers the pre-tension groove 33, the adjusting bolt 32 is anchored on the pressure plate 31, and the end is tightened with the plate spring 900 on the top of the fuel assembly to provide pre-tension The force makes the fuel assembly leaf spring 900 preloaded and displaced to reach the designed compression amount.

[0102] The present invention can meet the requirements of different pre-tightening forces by tightening the pressure plate and the adjusting bolt on the tube seat plate spring 900 on the fuel assembly.

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Abstract

The invention provides an anti-seismic test method of a full-scale fuel assembly, relates to the technical field of nuclear test equipment, and solves the technical problem that there is no corresponding test bench for testing the anti-seismic performance of the full-scale fuel assembly. The anti-seismic test method of the full-scale fuel assembly includes fixing the fuel assembly on an earthquake-simulating vibration table through an anti-seismic test stand, injecting water to simulate the working state and testing; the anti-seismic test stand includes a water tank filled with water, placed in the water tank The internal frame used to fix the fuel assembly, the pre-tensioning mechanism set on the top of the water tank to press the fuel assembly, and the frame stabilization assembly set on the water tank and tightened with the internal frame to limit the position; the water tank is installed on the earthquake simulation vibration table , also includes detection elements placed on fuel assemblies, water tanks and / or internal frames. The invention is used for the anti-seismic test of the fuel assembly, which is a process from scratch, and can carry out a full-scale anti-seismic test on the fuel assembly.

Description

technical field [0001] The invention relates to the technical field of nuclear test equipment, in particular to an anti-seismic test method for a full-scale fuel assembly. Background technique [0002] Such as Figure 24 As shown, the nuclear power plant reactor fuel assembly is composed of a fuel rod 500, an upper nozzle 400 part, a lower nozzle 300 part, a positioning grid, a guide tube part, a flux measuring tube, etc., and the fuel assembly has a multi-layer positioning grid ( Spacer grid A600, spacer grid B700, spacer grid C800), the spacer grid is welded on the guide tube, and the fuel rod is fixed by the internal spring to form a fuel assembly. The upper and lower ends of the fuel assembly are fixedly connected to the external support structure through the tube holes and pins of the upper and lower tube bases respectively. [0003] The anti-seismic problem of fuel assemblies is an important subject related to the safety of nuclear power plants. According to my count...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/04
CPCG01M7/04
Inventor 张艳红胡晓高建勇朱洪东杨陈邢国良曾迪张立红曾新翔吕玮
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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