Experimental system for thermal-hydraulic characteristics and corrosive properties of liquid lead-bismuth alloy

Abstract

The invention provides an experimental system for thermal-hydraulic characteristics and corrosive properties of a liquid lead-bismuth alloy. The experimental system comprises a liquid lead-bismuth cycling experiment device, wherein the liquid lead-bismuth cycling experiment device specifically comprises a power pump group, a preheater, a first experimental section, a second experimental section, aheat exchanger, an oxygen control system, a purification system, an expansion box, a storage box, a plurality of flow meters, a plurality of pressure transmitters and a plurality of lead-bismuth valves. By controlling opening or closing of different lead-bismuth valves, different loops are selected for completing experiments on the thermal-hydraulic characteristics and corrosive properties of equipment associated with the liquid lead-bismuth alloy in different experimental sections of the system, as well as experiments on compatibility characteristics of equipment materials and lead-bismuth.With implementation of the system, defects in the prior art can be overcome, and analytical study on the thermal-hydraulic characteristics and corrosive properties of the liquid lead-bismuth alloy isrealized.

Description

technical field [0001] The invention relates to the technical field of nuclear energy, in particular to an experimental system for thermal hydraulic characteristics and corrosion characteristics of a liquid lead-bismuth alloy. Background technique [0002] Nuclear energy has occupied an increasingly important position in the energy field of the world today. With the development of nuclear energy, how to make full use of limited uranium resources and effectively deal with nuclear waste has increasingly attracted people's attention. Liquid lead-bismuth alloy cooling reactor is an effective way to solve the above problems. As a coolant, liquid lead-bismuth alloy has good thermal conductivity, but due to its active chemical properties, high melting point and corrosiveness, it is extremely difficult to study thermal hydraulic performance and corrosion performance. [0003] For the design and construction of fast reactors and the safety analysis of fast reactor operation, the res...

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Problems solved by technology

Because lead-bismuth alloys are corrosive, and the oxygen concentration of liquid lead-bismuth has a great influence on the physical properties of lead-bismuth, this system is not suitable for lead-bismuth experiments.

[0005] However, there are still many shortcomings to be improved in the existing research on the thermal-hydraulic properties of liquid lead-bismuth alloys, and it is impossible to carry out effective analysis and research on the thermal-hydraulic properties and corrosion properties of liquid lead-bismuth alloys.

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