Gas supply method and device for detecting content of hydrogen in solid metal

A gas supply device and a technology for hydrogen content, which are applied in the field of gas supply methods and devices for detecting hydrogen content in solid metals, can solve the problems of single gas supply method, low degree of automation, affecting detection results, etc., and achieve faster analysis time and automation. The effect of high degree and improved detection accuracy

Pending Publication Date: 2020-10-09
GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gas supply method of the current gas supply device is single, and the degree of automation is low, which makes the detection efficiency low and the data has large errors, which seriously affects the detection results.

Method used

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  • Gas supply method and device for detecting content of hydrogen in solid metal
  • Gas supply method and device for detecting content of hydrogen in solid metal
  • Gas supply method and device for detecting content of hydrogen in solid metal

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1: According to this embodiment of the present invention, a device for detecting hydrogen content in solid metal is provided, figure 1 It is a structural block diagram of the detection device of the present invention, such as figure 1 As shown, the device mainly includes: gas supply control unit, gas supply unit, hydrogen evolution chamber, signal acquisition unit, temperature control unit and control processing system.

[0048] During the test, the solid metal sample is placed in the hydrogen evolution chamber, and the gas supply unit is connected to the hydrogen evolution chamber to provide the hydrogen evolution chamber with a carrier gas for purging the solid metal sample before heating and serving as a hydrogen carrier during the hydrogen evolution process. The air supply control unit and the air supply unit together form an air supply device, and the air supply control unit is connected with the air supply unit to realize the control of the air supply u...

Embodiment 2

[0062] Embodiment 2: According to this embodiment of the present invention, a detection method using the hydrogen content detection device in the solid metal described in the foregoing embodiment 1 is provided. When the hydrogen content is detected, the solid metal sample 7 is first placed in the hydrogen evolution chamber In the sample pre-release area 101, the temperature and hydrogen concentration in the hydrogen evolution chamber are detected by the temperature sensor 5 and the high-temperature hydrogen sensor 6. The carrier gas is supplied to the sample prevention area 101 and the heating area 102 of the hydrogen evolution chamber through the gas supply unit 100 . The carrier gas is nitrogen or inert gas that does not react with hydrogen and solid metal. Before measuring hydrogen, the air in the hydrogen evolution chamber needs to be exhausted. Before the carrier gas is introduced, the hydrogen evolution chamber can be evacuated by the vacuum pump 20 outside the hydrogen ...

Embodiment 3

[0068] Embodiment 3: According to this embodiment of the present invention, there is provided a gas supply device for the detection of hydrogen content in solid metals in the foregoing embodiments 1 and 2. The gas supply device provided in this embodiment can be solid The carrier gas is provided when the hydrogen content of the metal sample is detected, and the hydrogen-containing calibration gas can also be provided for the calibration of the detection device. The calibration requirements of different hydrogen concentrations can realize the calibration of high-temperature hydrogen sensors, avoid the influence of the sensor's own factors on the detection accuracy of metal hydrogen content, and improve the detection accuracy of data; by selecting large flow gas flow controllers and small flow gas flow control The device can meet the requirements of different gas flows into the hydrogen evolution chamber, improve the accuracy of gas flow control, and further improve the accuracy ...

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Abstract

The invention relates to a gas supply method and device for detecting the content of hydrogen in solid metal. The gas supply device is used for being connected with a hydrogen evolution chamber for hydrogen evolution of the solid metal, and the gas supply device mainly comprises a gas source module, a gas electromagnetic valve module, a gas purification module, a vacuumizing module and a control module. Carrier gas can be provided for sample hydrogen content detection, hydrogen-containing calibration gas can be provided for high-temperature hydrogen sensor calibration, the gas supply process matches the test process, the automation degree is high, and the detection efficiency is high; and the calibration requirements of different hydrogen concentrations are met, and the gas flow control accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of substance content detection in samples, and relates to the detection of hydrogen content in solid metal samples, such as the detection of diffuse hydrogen content or total hydrogen content in steel blocks, aluminum blocks, and metal welded joints, and specifically relates to a method for detecting hydrogen content in solid metal samples. Gas supply method and device for hydrogen content detection. Background technique [0002] The hydrogen sensor prepared with functional ceramics as the core component is a type of high-temperature sensor that has developed rapidly in recent years. This sensor has been gradually applied to the detection of hydrogen content in high-temperature media such as liquid metal and molten salt. Depending on the type of material, the high temperature at which hydrogen gas is precipitated is different for each material. For the detection of hydrogen content in solid metal, if a high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/16G01N33/2025
CPCG01N7/16G01N33/2025
Inventor 陈建勋戚政武张大伟张万宝陈英红杨宁祥张少琼叶忠巧李晓峰李继承谢小娟
Owner GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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