Erosion deposition test device and test method with multi-characteristic pipe sections, multi-angle positions, and controllable particle concentration

Abstract

The invention relates to an erosion deposition test device and a test method with multi-characteristic pipe sections, multi-angle positions, and controllable particle concentration, belonging to the field of erosion deposition test of nuclear power plant pipelines. The invention solves the problem that the traditional pipe flow erosion deposition experimental device cannot simultaneously test the erosion deposition conditions of different characteristic pipe sections and different angle positions of the same pipe section, and it is difficult to simulate the erosion deposition situation of the particle concentration in the primary circuit pipeline of the nuclear power plant that changes with time . The power device in the present invention includes a frequency converter, a three-phase motor and a centrifugal pump; the input end of the frequency converter is connected to a three-phase power supply, the output end is connected to a three-phase motor, the output end of the three-phase motor is connected to a centrifugal pump, and the water inlet of the centrifugal pump is connected to the main pipe of the circulation pipeline At the end of the pipeline, the outlet of the centrifugal pump is connected to the beginning of the main pipeline of the circulation pipeline; among the components of the test device, all the components that are in contact with the medium in the liquid storage tank are made of non-metallic materials or metal materials that do not contain Co, Fe, Ni, Mn, Cr . The invention is used for erosion deposition testing.

Description

technical field [0001] The invention relates to a nuclear power plant pipeline erosion deposition test device and test method, in particular to a multi-characteristic pipe section, multi-angle position, and a controllable particle concentration erosion deposition test device and test method, which can be tested in the primary circuit of a nuclear power plant. During the period, the impact of radioactive particles whose concentration in the pipeline changes with time on the erosion deposition of different elbows and the element replacement between radioactive elements and pipe wall components belongs to the field of nuclear power plant pipeline erosion deposition testing. Background technique [0002] During the overhaul period of nuclear power plants, hydrogen peroxide solution should be injected into the primary circuit pipeline for pipeline cleaning. During this process, there will be corrosion product particles of radioactive elements (such as CoO, Fe 3 o 4 , NiO, MnO, C...

AI Technical Summary

Problems solved by technology

Due to the existence of the desalination bed in the primary circuit pipeline of the nuclear power plant, the particle concentration in the primary circuit pipeline decreases continuously with the circulation of the cleaning fluid, while the traditional flow tube experimental device can only create a certain concentration of particles. The corrosion deposition environment cannot truly simulate the erosion deposition of the particle concentration in the primary circuit pipeline of the nuclear power plant over time.

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