High-temperature high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method

A flow-accelerated corrosion, high-temperature and high-pressure technology, which is applied in the fields of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc. The effect of sensitive control, stable operation and strong safety

Active Publication Date: 2021-01-29
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-temperature, high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method, based on the principle of natural circulation, relying on the density difference between the cold and hot carbon dioxide fluids as the driving pressure head

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  • High-temperature high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method
  • High-temperature high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method
  • High-temperature high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method

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Embodiment 1

[0040] Such as Figure 1-Figure 3As shown, the high temperature and high pressure supercritical carbon dioxide flow accelerated corrosion test system includes a closed loop circuit and a gas supply system; the closed loop loop includes a pulse damper 14 connected by pipelines, a carbon dioxide mass flowmeter 15, an electric control valve V6, a heating Device 16, high-temperature and high-pressure reactor and cooler 22, the cooler 22 is arranged at the rear end of the high-temperature and high-pressure reactor, and the pulse damper 14, carbon dioxide mass flow meter 15, electric control valve V6, and heating device 16 are arranged at a high temperature At the front end of the high-pressure reactor, the outlet of the pulse damper 14 is provided with a shut-off valve V, and the closed loop is provided with 2 branches, one of which is provided with a shut-off valve V3 and a vacuum pump 10, and the vacuum pump 10 is used for The air in the equipment and pipeline is exhausted in the...

Embodiment 2

[0046] Such as Figure 1-Figure 3 As shown, this embodiment is based on Embodiment 1, and a baffle plate 25 is provided between the high-temperature and high-pressure reactor body 19 and the high-temperature and high-pressure reactor cover 20 .

Embodiment 3

[0048] Such as Figure 1-Figure 3 As shown, this embodiment is based on Embodiment 1, and also includes an alarm system, the alarm system includes a controller, and also includes an overpressure / low pressure alarm, an abnormal flow alarm, an over-temperature alarm, and a carbon dioxide alarm electrically connected to the controller. The abnormal gas composition alarm also includes a pressure sensor and a temperature sensor arranged on the closed loop, the pressure sensor and the temperature sensor are electrically connected to the controller, and the carbon dioxide mass flow meter 15 and the mass spectrometer 13 are electrically connected to the controller.

[0049] This embodiment is equipped with an overpressure / low pressure alarm, an abnormal flow rate alarm, an overtemperature alarm, and an abnormal carbon dioxide gas component alarm, and a series of actions occur through the existing computer control system to ensure the safety and reliability of the system. . When the p...

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Abstract

The invention discloses a high-temperature high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method. The test system comprises a closed circulation loop and a gas supply system; the closed circulation loop comprises a pulse damper, a carbon dioxide mass flow meter, an electric control valve V6, a heating device, a high-temperature and high-pressure reaction kettle and a cooler which are connected through a pipeline, and the cooler is arranged at the rear end of the high-temperature and high-pressure reaction kettle; the pulse damper, the carbon dioxide massflow meter, the electric control valve V6 and the heating device are arranged at the front end of the high-temperature and high-pressure reaction kettle, and a mass spectrometer and a back pressure valve are arranged on the closed circulation loop; the gas supply system comprises a carbon dioxide storage tank and a high-pressure liquid chromatography pump and is used for providing carbon dioxide gas flow for the closed circulation loop. The problems that in the prior art, the working condition of high-flow-speed supercritical carbon dioxide is difficult to achieve, and a supercritical carbon dioxide flow accelerated corrosion test cannot be carried out are solved.

Description

technical field [0001] The invention relates to a corrosion test technology for corrosion-resistant materials, in particular to a high-temperature, high-pressure supercritical carbon dioxide flow accelerated corrosion test system and method. Background technique [0002] Nuclear energy is gradually becoming an important choice to replace fossil energy due to its advantages of stability, economy, and high efficiency, and has become one of the three pillars of world energy. The supercritical carbon dioxide nuclear energy system adopts the principle of the fluid Brayton cycle. Compared with the traditional Rankine cycle, it has the advantages of simple system, compact structure, high thermal efficiency, and easy realization of modular technology. Material reliability is one of the important bottlenecks restricting the development of supercritical carbon dioxide. Under the condition of supercritical carbon dioxide, the system materials will not only undergo uniform corrosion an...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 黄彦平王家贞姜峨邱添卓文彬马韦刚刘生晖刘蔚伟
Owner NUCLEAR POWER INSTITUTE OF CHINA
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