Atmospheric corrosivity on-line monitoring system and method

Abstract

The invention discloses an atmospheric corrosivity on-line monitoring system and method. The system comprises a corrosion galvanic couple. The corrosion galvanic couple comprises an anode plate and a cathode plate arranged in parallel. The anode plate and the cathode plate are arranged in a conductive solution. The anode plate and the cathode plate are respectively connected to outgoing lines. The outgoing lines are connected to a zero resistance galvanometer. The zero resistance galvanometer transmits the measured corrosion current to an atmospheric corrosion monitoring server. The atmospheric corrosion monitoring server carries out analysis and processing through the received corrosion current value from the corrosion galvanic couple and acquires an atmospheric corrosivity level at any time point through comparison with a preset standard.

Description

technical field [0001] The invention belongs to the field of corrosion monitoring, and in particular relates to an atmospheric corrosion online monitoring system and a method thereof. Background technique [0002] At present, the judgment of atmospheric corrosiveness is mainly based on the standard ISO9223 and the national standard GB19292. Atmospheric corrosivity testing and methods currently mainly include two types of methods: one is field exposure test method. This method adopts the exposure corrosion test of standard metal copper, aluminum, zinc and carbon steel in the field to detect the corrosion weight loss or thickness loss in the first year, so as to realize the classification of atmospheric corrosion. The second is the environmental factor method. This method detects atmospheric environmental factors, mainly including four parts: temperature, humidity, sulfur oxide content and sedimentation of chlorine salt. The atmospheric corrosivity is evaluated and graded a...

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Problems solved by technology

[0003] The on-site exposure test method requires at least one-year exposure corrosion test in the field. It takes a long period to obtain the results, and the corrosion data obtained has large dispersion and poor accuracy, especially for data near the critical point of corrosive classification. Atmospheric corrosive ratings pose a concern

The period required to obtain atmospheric environmental factors by the environmental factor method is also very long, especially the detection steps of sulfur oxides and chloride salt deposition are very cumbersome, and the obtained results fluctuate greatly

[0004] With the development of society, the atmospheric environment is constantly changing, and the reliability of the atmospheric corrosion monitoring results over the past few years will be reduced.

However, the long-term and continuous monitoring of atmospheric corrosion over the past time is very heavy and unrealistic.

In short, there are disadvantages such as long period, poor precision, and low reliability in the monitoring of atmospheric corrosion by the above method.

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