An apparatus and system for controlling the oxygen concentration in a liquid LBE/Pb coolant

A coolant and oxygen concentration technology, which is applied in various fluid ratio control, measuring devices, instruments, etc., can solve the problem that solid oxygen control cannot be replenished online, lead oxide balls are easily polluted, poisoning, and gaseous oxygen control adjustment speed is slow and other problems, to achieve the effect of improving oxygen supply efficiency, short response time, and easy transient adjustment

Pending Publication Date: 2017-05-31
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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Problems solved by technology

Initially Ar / H 2 / O 2 Ternary gas realizes oxygen control, in which Ar (argon) gas is used as carrier gas to dilute hydrogen H 2 or oxygen O 2 Content effect, reducing H 2 However, gaseous oxygen control has slow adjustment speed, low oxygen supply efficiency, and the risk of radioactive gas leakage
The solid oxygen control technology is mainly to adjust the oxygen content in the liquid lead-bismuth alloy efficiently, quickly and cleanly by controlling the dissolution and precipitation of solid oxides. However, the solid oxygen control cannot be replenished online, and the lead oxide balls are easy to contaminate "poisoned"

Method used

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  • An apparatus and system for controlling the oxygen concentration in a liquid LBE/Pb coolant
  • An apparatus and system for controlling the oxygen concentration in a liquid LBE/Pb coolant
  • An apparatus and system for controlling the oxygen concentration in a liquid LBE/Pb coolant

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] Such as figure 1 As shown, in the embodiment of the present invention, the electrochemical oxygen pump essentially uses the principle of an electrochemical electrolytic cell to control the flow of oxygen ions, thereby adjusting the oxygen concentration of the cathode and anode on both sides of the solid electrolyte, and is usually used in the purification of oxygen and manufacturing

[0039] The basic principle of the electrochemical oxygen pump is to contr...

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Abstract

The invention discloses an apparatus and system for controlling the oxygen concentration in a liquid LBE / Pb coolant. Through the use of a novel electrochemical oxygen pump device, the oxygen concentration in the coolant can be precisely controlled to form a layer of dense oxide film on the steel surface to prevent further penetration of lead-based alloy into the steel and achieve a preservative effect; and key technical difficulties in lead-based fast reactors and ADS systems are solved to ensure long-term and safe operation of experimental loops and the lead-based fast reactors.

Description

technical field [0001] The invention relates to the technical field of liquid LBE / Pb (Lead-Bismuth Eutectic / Pb, lead-bismuth alloy / pure lead) coolant, in particular to a device and system for controlling the oxygen concentration in liquid LBE / Pb coolant. 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. 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. Therefore, the oxygen concentration control technology is generally considered to be The most effective anti-corrosion method for liquid metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D11/13G01N27/407
CPCG05D11/13G01N27/4073
Inventor 曾献陈钊孙树斌吕阳张勇石秀安林继铭
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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