Integrated gaseous oxygen control device and lead-based fast neutron reactor

Abstract

The invention discloses an integrated gaseous oxygen control device which is suitable for a lead-based fast neutron reactor. The device comprises a gas injector (11), a columnar lifting pipe (12) anda gas-liquid separation chamber (13); a liquid discharge outlet (131) is formed between the bottom of the gas-liquid separation chamber (13) and the outer wall of the columnar lifting pipe (12); at least a gas outlet (14) is arranged in the upper side of the gas-liquid separation chamber (13); one end of the gas injector (11) penetrates through the top of the gas-liquid separation chamber (13); atleast a part of the lower end of the columnar lifting pipe (12) and a part of the lower end of the gas injector (11) are located below the liquid level of a cooling liquid; and the gas-liquid separation chamber (13) is located above the liquid level of the cooling liquid. The invention also discloses a corresponding lead-based fast neutron reactor. With the implementation of the method, the engineering feasibility and safety of the gaseous oxygen control technology can be effectively improved, and the complexity and the operation maintenance cost of the system are reduced.

Description

technical field [0001] The invention belongs to the technical field of advanced nuclear energy systems, and in particular relates to an integrated gaseous oxygen control device and a lead-based fast neutron reactor. Background technique [0002] Liquid lead-based alloys (lead and lead-bismuth alloys) have excellent thermal conductivity and neutronic properties, and are important candidate coolants for fourth-generation nuclear power lead-based fast neutron reactors (lead-based fast reactors) and future advanced nuclear energy systems ADS . However, lead-based alloys are highly corrosive to structural materials in medium and high temperature environments, which greatly reduces the safety and economy of lead-based fast neutron reactors. [0003] At present, it is generally believed that the most effective way to inhibit the corrosion effect of lead-based alloys is to control the oxygen concentration in liquid lead-based alloys. The principle is: keep the oxygen concentration...

AI Technical Summary

Problems solved by technology

However, this method needs to inject a large amount of gas into the reactor, which will affect the normal operation of the reactor. Once the lead-based coolant entrains air bubbles into the core, it will cause a serious reactor accident.

Therefore, at present, this method is only applied to the coolant stagnation zone around the core for small-scale oxygen concentration adjustment.

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