Full-scale fuel assembly anti-seismic test method and an anti-seismic test bed
A fuel assembly and anti-seismic test technology, which is applied in the testing of machine/structural components, vibration testing, measuring devices, etc., can solve the problem of no direct full-scale anti-seismic test of fuel assemblies, and achieve the effect of real data
Active Publication Date: 2021-11-16
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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[0006] The purpose of the present invention is to provide a full-scale fuel assembly anti-seismic test method and an anti-seismic test bench, to solve the technical problem in the prior art that there is no device or method for directly performing an anti-seismic test on a full-scale fuel assembly
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[0101] like figure 1 , figure 2 with Figure 10 Shown as an alternative embodiment of the present invention, the urging means 3 includes a platen 31, a preload adjusting bolt 32 and the groove 33; groove 33 defines biasing 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 anchored at the top of the upper core plate 22 and the slot 33 overlies preload adjusting bolt 32 anchored on the pressure plate 31, the spring and the end plate of the fuel assembly top 900 to provide a tight biasing The fuel plate assembly 900 so that the force urging the displacement of the spring to meet the design compression.
[0102] The present invention, by adjusting the platen and the top tube bolt tightening seat plate spring 900 on the fuel assembly, to meet the different requirements of preload pair.
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The invention provides a full-scale fuel assembly anti-seismic test method and an anti-seismic test bed, relates to the technical field of nuclear test equipment, and solves the technical problem that no corresponding test bed is provided for testing the anti-seismic performance of a full-scale fuel assembly. The full-scale fuel assembly anti-seismic test method comprises the steps that a fuel assembly is fixed to an earthquake simulation vibration table through an anti-seismic test bed, water is injected to simulate the working state, and testing is conducted; the anti-seismic test bed comprises a water tank containing water, an internal frame placed in the water tank and used for fixing a fuel assembly, a pre-tightening mechanism arranged at the top of the water tank and used for pressing the fuel assembly, and a frame stabilizing assembly arranged on the water tank and tightly abutting against the internal frame for limiting; and the water tank is installed on the earthquake simulation vibration table, and the detection elements are placed on the fuel assembly, the water tank and / or the inner frame. The method is used for the anti-seismic test of the fuel assembly, the process is from nothing to existence, and the full-size anti-seismic test can be carried out on the fuel assembly.
Description
Technical field [0001] The present invention relates to the technical field of nuclear testing devices and more particularly, to a full scale test method and seismic shock test stand fuel assembly. Background technique [0002] like Figure 24 , The nuclear reactor fuel assembly is composed of fuel rods 500, the stem member 400, the socket member 300, the spacer grid, the guide pipe member, the flux measurement tube configuration, the multilayer fuel assembly spacer grid ( spacer grid A600, B700 grid spacer, the spacer grid C800), welded to the spacer grid guide tube, a spring inside the fuel rods by fixing to form a fuel assembly. The fuel assembly, through the lower end portions, and the pin hole with the outer support structure is fixedly connected to the stem. [0003] Earthquake fuel assembly problem is related to the nuclear power plant safety an important issue. The nuclear safety regulations and our country "and identification of seismic design of nuclear power plants (HAD...
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IPC IPC(8): G01M7/04
CPCG01M7/04
Inventor 胡晓张艳红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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