A method for detecting galvanic atmospheric corrosion sensor

A technology for atmospheric corrosion and corrosion detection, applied in the field of sensor detection, can solve the problems of difficulty in meeting the requirements of mass production process of sensors and long evaluation period, and achieve the effect of satisfying comparability requirements, ensuring results, and ensuring accurate and credible results.

Active Publication Date: 2021-06-18
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no uniform specification and detection method for relevant corrosion sensors at home and abroad. The evaluation of corrosion sensors can only be realized by comparing the long-term test results with outdoor exposure corrosion samples. The evaluation cycle is long and it is difficult to meet the sensor mass production process requirements.

Method used

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  • A method for detecting galvanic atmospheric corrosion sensor
  • A method for detecting galvanic atmospheric corrosion sensor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In this embodiment, the anode of the galvanic atmospheric corrosion sensor is made of metal zinc, and the cathode is made of metal platinum. The structure of the galvanic couple type atmospheric corrosion sensor is a spaced form in which cathodes and anodes are alternately arranged, and the cathodes and anodes are respectively provided with lead wires. The electrode area is 10cm 2 .

[0061] First, at 25° C. and 30% RH, a multimeter was used to detect the insulation resistance between the anode and the cathode of the above-mentioned galvanic atmospheric corrosion sensor. The positive pole of the multimeter is connected to the anode of the galvanic atmospheric corrosion sensor, and the other pole of the multimeter is connected to the cathode of the galvanic atmospheric corrosion sensor. The detected resistance value is 80MΩ, which preliminarily judges that the galvanic atmospheric corrosion sensor is effective.

[0062] Next, in the temperature and humidity alternating...

Embodiment 2

[0070] In this embodiment, the anode of the galvanic atmospheric corrosion sensor is made of metal aluminum, and the cathode is made of metal gold. The structure of the galvanic couple type atmospheric corrosion sensor is a spaced form in which cathodes and anodes are alternately arranged, and the cathodes and anodes are respectively provided with lead wires. The electrode area is 10cm 2 .

[0071] First, at 25°C and 30% RH, use a multimeter to detect the insulation resistance between the anode and cathode of the galvanic atmospheric corrosion sensor. The positive pole of the multimeter is connected to the anode of the galvanic atmospheric corrosion sensor, and the other pole of the multimeter is connected to the cathode of the galvanic atmospheric corrosion sensor. The detected resistance value is 20MΩ, which preliminarily judges that the galvanic atmospheric corrosion sensor is effective.

[0072] Next, in the temperature and humidity alternating box described above, the c...

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Abstract

The invention provides a method for detecting a galvanic atmospheric corrosion sensor, the method comprising: step 1): measuring the insulation resistance value between the cathode and the anode of the galvanic atmospheric corrosion sensor, based on the insulation The resistance value preliminarily judges whether the galvanic atmospheric corrosion sensor is effective, if it is initially judged that the galvanic atmospheric corrosion sensor is effective, then proceed to the following step 2); step 2): at room temperature and various humidity conditions Next, detect and record the corrosion current value of the galvanic couple type atmospheric corrosion sensor, and judge whether the detected corrosion current value is within a predetermined range, if so, proceed to the following step 3); and step 3 ): detecting and analyzing the situation that the corrosion current value of the galvanic atmospheric corrosion sensor changes with the change of humidity.

Description

technical field [0001] The invention belongs to the technical field of sensor detection methods, and in particular relates to a method for detecting a galvanic couple type atmospheric corrosion sensor. Background technique [0002] The galvanic couple type atmospheric corrosion sensor uses the atmosphere as the corrosion medium according to the difference in corrosion potential of the cathode and anode materials, and realizes the detection of atmospheric corrosion by detecting the corrosion current between the cathode and anode, which solves the problem of long cycle time and work problems such as large volume and discontinuous data. [0003] There are many options for the structural form and cathode and anode materials of the galvanic atmospheric corrosion sensor, and the sensitivity, accuracy and consistency of the sensor have a great influence on the detection results. At present, there is no uniform specification and detection method for relevant corrosion sensors at ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 樊志彬李辛庚马义河姜波王晓明宗立君张振岳闫风洁李文静吴亚平郭凯王蝶赵洺哲米春旭
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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