In-situ mechanical testing device used in lead-bismuth environment

Abstract

The invention belongs to the technical field of mechanical property testing of nuclear engineering materials, and discloses an in-situ mechanical testing device used in a lead-bismuth environment. A safe and reliable high-temperature lead-bismuth environment box body is constructed by a testing machine, a sealing method of an inner layer and an outer layer is used, the in-situ mechanical testing device is suitable for high-temperature liquid lead-bismuth and other harsh environments, and by matching with attached gas circuit control of the testing machine, safety is ensured, the influence of gas leakage on a test result is prevented, the vacancy of the in-situ mechanical testing machine used in a high-temperature lead-bismuth environment in a domestic market is filled, and the in-situ mechanical testing machine has great significance on the development of novel nuclear industry in China. And an oxygen control device is further arranged so that the oxygen concentration in a lead-bismuth alloy can be monitored in real time and strictly controlled, and the device can be used for simulating actual working conditions under different conditions and researching the corrosivity of the lead-bismuth alloy to a structural material under different oxygen concentrations.

Description

technical field [0001] The invention belongs to the technical field of testing the mechanical properties of nuclear engineering materials, and in particular relates to an in-situ mechanical testing device used in a lead-bismuth environment. Background technique [0002] In recent years, nuclear energy, as a mature, safe and reliable clean energy, has been widely valued worldwide. However, my country's nuclear energy development and utilization time is relatively short, and its total use ratio is far behind that of developed countries such as Europe and the United States. For long-term development, my country needs to vigorously develop nuclear energy. In the process of developing nuclear energy, the safe disposal of nuclear waste is an inevitable problem. At present, the accelerator driven sub-critical system (Accelerator Driven Sub-critical System, ADS) has good economy and system security, and is internationally recognized as the most promising technical approach to safel...

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Problems solved by technology

[0004] The present invention provides an in-situ mechanical test device used in lead-bismuth environment, which solves the technical problems of mechanical testing of structural materials in lead-bismuth environment, and can be used to pull For tensile, compression and fatigue tests, a high-temperature lead-bismuth environment chamber with good sealing performance and complete gas-liquid circuit control is designed, and a liftable furnace that can control the oxygen concentration in the lead-bismuth melt provides a safe and reliable environment for mechanical tests of materials. High Temperature Liquid Lead Bismuth Environment with Quantitative Oxygen Concentration

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