A device and method for detecting gas content in liquid metal

A liquid metal and gas content technology, applied in the direction of measuring devices, measuring flow/mass flow, liquid/fluid solid measurement, etc., can solve the problems of not being able to reflect the change of liquid metal gas content in time, long response time of gas alarm devices, etc., to achieve Good linearity and range, high magnetic field stability, and high sensitivity

Active Publication Date: 2018-12-28
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, a gas detection and alarm device in liquid metal adopts the principle of diffusion and penetration. The increase of gas content will cause the pressure change in the vacuum system, so as to achieve the purpose of monitoring the gas in the liquid metal, but the gas in the liquid metal The response time of the alarm device is long and cannot reflect the change of gas content in liquid metal in time

Method used

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  • A device and method for detecting gas content in liquid metal
  • A device and method for detecting gas content in liquid metal

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A device for detecting gas content in liquid metal, the device includes a primary sensor and a secondary instrument, wherein the primary sensor includes a magnetic steel assembly, a pipeline assembly 3, a turbulence generator 4, an electrode 2, and a supporting positioning assembly 5;

[0031] The two ends of the pipeline assembly 3 are respectively communicated with the liquid metal pipeline to be detected through the interface;

[0032] The turbulence generator 4 is located in the pipeline assembly, and the turbulence generator 4 causes the fluid in the pipeline assembly 3 to generate eddy currents, increasing the signal fluctuation amplitude; the turbulence generator 4 is a wedge-shaped polyhedron structure, and it is located in the pipeline assembly 3 The radial center position of the turbulent flow generator 4 is placed so that the liquid metal first flows through the wide surface of the wedge-shaped polyhedron structure, and then flows through the narrow surface of...

Embodiment 2

[0040] The difference from Example 1 is that the liquid metal is sodium, and the number of electrodes is 2 pairs. There is an air gap of 1 mm between the pipe assembly and the two horn-shaped permanent magnets.

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Abstract

The invention belongs to the technical field of gas content measurement and discloses an apparatus and method for detecting gas content in a liquid metal.The apparatus comprises a primary sensor and a secondary instrument, wherein the primary sensor comprises a magnetic steel assembly, a pipeline assembly, a turbulence generator, electrodes and a supporting and positioning assembly; the method includes: detecting the gas content in the liquid metal according to differences between sensing signals generated by the liquid metal and a gas therein cutting magnetic lines of force.The apparatus and method have the advantages of high response speed, high sensitivity and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of gas content measurement, in particular to a device and method for detecting gas content in liquid metal. Background technique [0002] In some production and operation processes, the volume content of gas in liquid metal is required to be lower than a certain limit, and the increase in gas volume may mean the occurrence of accidents. Therefore, the purpose of monitoring accidents can be achieved by monitoring the volume content of gas in liquid metal. [0003] Taking sodium-cooled fast reactor as an example, fast reactor is the main reactor type of the world's fourth-generation advanced nuclear energy system. Liquid metal sodium is selected as the coolant material for fast neutron reactors due to its good thermal conductivity and neutron properties. Metal sodium It has the characteristics of lively chemical properties and easy to react violently with water to release hydrogen. The steam generator is one ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00G01M3/40G01F1/64
CPCG01F1/64G01M3/40G01N27/00
Inventor 张媛媛杨建伟崔国生吴宏岩董康乐刘浩杰赵保平
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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