Solid-state oxygen control device

Abstract

The invention discloses a solid-state oxygen control device. The device comprises a container, a flow rate adjusting unit and a replenishment mechanism, wherein a dissolution chamber for holding leadoxide pellets is arranged in the container, and an inlet and an outlet which are communicated with the dissolution chamber respectively are formed in two ends of the container; the flow rate adjustingunit is arranged on the container and used for controlling the flow rate of a coolant in the container; the replenishment mechanism is connected with the dissolution chamber to replenish the lead oxide pellets for the dissolution chamber. By means of the arrangement of the replenishment mechanism and a return pipe, the problem that current solid state oxygen control cannot realize online replenishment is solved, high-power oxygen supply of a reactor device and online replenishment of the lead oxide pellets are realized, the concentration of oxygen in the coolant can be accurately controlled,so that a layer of dense oxide film is formed on the surface of steel, lead-based alloy is prevented from further penetrating into the steel, an anticorrosion effect is realized, key technical difficulties of a lead-based fast reactor or an ADS system are overcome, and long-term safe operation of an experimental loop and the lead-based fast reactor is ensured.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a solid oxygen control device. Background technique [0002] Because liquid lead-based alloy coolant is highly corrosive to reactor structural materials, oxygen concentration control technology is generally considered to be the most effective anti-corrosion method for liquid metal circuits and lead-based fast reactors. One of the key equipment for safe operation. [0003] Adjusting the oxygen content in liquid lead-bismuth alloy is an important means to reduce its corrosion to steel. If a certain concentration of oxygen is dissolved in the lead-bismuth alloy, a dense oxide film can be formed on the pipe wall of the circuit, which prevents the lead-bismuth alloy from further penetrating into the steel and plays an anti-corrosion role. However, the oxygen concentration in the liquid metal must be maintained within a reasonable range. If it exceeds the upper limit, it wil...

AI Technical Summary

Problems solved by technology

[0007] The existing solid-state oxygen control devices can only be applied to experimental loops or static experimental devices, and cannot be applied to lead-based reactor devices

At the same time, the existing solid-state oxygen control device cannot replenish lead oxide pellets online. The lead oxide pellets are easily polluted and "poisoned". The solid-state oxygen control device can only be replaced offline, which will bring radioactive risks to maintenance personnel.

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