Dynamic circulation liquid metal environmental material corrosion test system

A technology of liquid metal and dynamic circulation, which is applied in the direction of analyzing materials, weather resistance/light resistance/corrosion resistance, testing wear resistance, etc., can solve problems such as the inability to realize liquid metal flow and stress loading, and achieve purification of impurities and stability The effect of monitoring

Pending Publication Date: 2022-02-18
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing test system mainly focuses on the static liquid metal environment, and cannot realize the flow and stress loading of liquid metal. The purpose is to provide a new dynamic circulation liquid metal environment material corrosion test system, which can simulate The actual service conditions of nuclear power plants provide test materials with a high flow rate and stress-loaded liquid metal environment

Method used

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  • Dynamic circulation liquid metal environmental material corrosion test system

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Embodiment 1

[0031] Such as figure 1 As shown, a dynamic circulation liquid metal environment material corrosion test system provided by the embodiment of the present invention is mainly composed of a gas pump 1, a melting storage tank 2, a circulation pump 3, a heater 4, a stress corrosion device 5, and an oxygen control box 6. It is composed of air cooler 7, flow meter 8 and several pipelines and valves.

[0032] Among them, the melting storage tank 2 is used to heat and melt solid metal and store and recover the liquid metal in the test system; the upper end of the melting storage tank is connected to the gas pump 1 through a gas pipeline, and the bottom end is connected to the circuit of the test system through a pipeline; the melting storage tank The tank 2 is provided with a heating device, a liquid level measuring device and a gas interface; the heating device is used to melt solid metal, the liquid level measuring device is used to measure the metal liquid level in the molten stora...

Embodiment 2

[0040] An operating method of a dynamic circulation liquid metal environment material corrosion test system provided by an embodiment of the present invention includes the following steps:

[0041] (1) Sample assembly: start the kettle body lifting device 11, lower the kettle body 12, install the stress corrosion sample on the sample fixture, open the kettle body lifting device 10 again, lift the kettle body 12, and complete the kettle cover 11 and the fastening and sealing of the still body 12;

[0042] (2) Pipeline preheating: turn on the heat tracing switch of the loop pipeline to preheat the loop pipeline;

[0043] (3) Canned medium: through the gas pump 1, the test medium in the molten storage tank 2 is pressed into the test system loop through the valve;

[0044] (4) Loop operation: Turn on the circulation pump 3, and after the liquid metal medium obtains thrust, it flows out from the circulation pump 3 and then flows through the heater 4, the stress corrosion device 5,...

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Abstract

The invention discloses a dynamic circulation liquid metal environmental material corrosion test system, the system comprises a gas pump, a melting storage tank, a circulating pump, a heater, a stress corrosion device, an oxygen control box and an air cooler, and the circulating pump, the heater, the stress corrosion device, the oxygen control box, the air cooler and the circulating pump are sequentially connected through pipelines to form a test system loop. The upper end of the melting storage tank is connected with the gas pump through a gas pipeline, the bottom of the melting storage tank is connected with the test system loop through a liquid pressing pipeline, and a heating device for melting solid metal is arranged in the melting storage tank. The test system provided by the invention can simulate the actual service condition of a nuclear power station, and provides a loading liquid metal environment with high flow velocity and stress for a test material.

Description

technical field [0001] The invention relates to the technical field of material corrosion testing, in particular to a dynamic circulation liquid metal environment material corrosion testing system. Background technique [0002] The fourth-generation nuclear reactor is a new type of reactor with higher safety, better economy and longer operating life. To achieve its successful development, construction and safe operation, the reliability of reactor structural materials in long-term service under actual working conditions must be considered. The liquid metal cooling reactor is one of the six conceptual reactors developed. The coolant is liquid metal with high temperature, high density and high flow rate, and liquid metal is extremely corrosive to traditional materials. [0003] The main vessels, steam generators, main pipelines, main pumps and valves of nuclear power plants are all subjected to certain service stresses (thermal stress or mechanical stress, etc.). These equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N3/02G01N17/00
CPCG01N3/56G01N3/02G01N17/00G01N2203/024
Inventor 邓平赵永福兰治科姜峨王苏豪银朝晖李朋洲卓文彬秦胜杰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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