Testing device used for rapid detection of atmosphere environment metal corrosion behavior

Abstract

The invention discloses a testing device used for rapid detection of atmosphere environment metal corrosion behavior. The testing device is composed of an atmosphere metal corrosion detector (1), a temperature detecting part (2), a relative humidity detecting part (3), a dampness eliminating part (4), a temperature adjusting part (5), a portable test box (6), and a power supply (7). According to the testing device, on testing sites of atmosphere environment, rapid detection of wet atmospheric corrosion behavior and rules of metal in atmosphere with the same content of natural environment atmosphere is realized by testers via increasing and reducing adjusting of the environment temperature in the portable test box and graduate reducing process of the relative humidity, critical humidity at metal corrosion atmosphere environment is determined, and working efficiency is increased. The testing device and the above method can be adopted to study different metal atmosphere corrosion behavior and rules via changing metal corrosion sensors of different materials; operation is simple; cost is low; and application range is wide.

Description

technical field [0001] The invention belongs to the field of metal corrosion measurement in atmospheric environment, and is particularly suitable for the test of quickly detecting metal corrosion behavior in tidal atmospheric environment at the test site. Background technique [0002] In the study of metal atmospheric corrosion laws, the study of the influence of atmospheric relative humidity is one of the important contents, and the determination of critical humidity in different regions and different metal materials plays an important role in the metal anticorrosion work of outdoor control cabinets, terminal boxes and other equipment in power grid enterprises. Playing an important guiding role, the definition of critical humidity in textbooks is: "the relative humidity of the atmosphere when the atmospheric corrosion rate of metals begins to increase sharply". [0003] Now there are mainly methods for the determination of critical humidity: Method 1, on-line detection meth...

AI Technical Summary

Problems solved by technology

[0003] Now there are mainly methods for the determination of critical humidity: Method 1, on-line detection method, that is, the atmospheric metal corrosion on-line detector made using the ACM principle, the instrument is placed in the atmospheric environment of the measured point, and through long-term on-line detection, the detected The change of the measured value of the corrosion current of the measured metal under different relative humidity, and then through data analysis, according to the definition of critical humidity, determine the critical humidity of the measured metal in the atmospheric environment of the measuring point area; method 2, laboratory simulation method, that is , in the laboratory, by simulating the atmospheric environment of the measured point area, in special test equipment, such as salt spray chamber and other equipment, the critical humidity of the measured point area and the tested metal are measured. The measurement of critical humidity, method 1, due to the variety of different metal materials used in production and operation enterprises, requires a large amount of online detection equipment, and daily maintenance of online detection equipment is required, the cost is extremely high, not only the detection time is relatively long Long, the installation and disassembly of the detection equipment is very inconvenient, and there is a risk of loss in the outdoors; the second method is to conduct a simulation test in the laboratory, because when the surface of the metal is in a wet state, it will be corroded by the atmosphere, the nature of erosion and The behavior depends on the nature of the electrolyte formed on the surface, especially on the type and content of suspended pollutants in the atmosphere. To truly reflect the atmospheric environment of the measured point, it is necessary to pass more atmospheric parameter components, such as: the air in the measuring point area Suspended pollutants and their content, sulfur dioxide, carbon dioxide and other parameters in the synthetic simulation, not only to obtain these parameters in the measured measuring point area, but also need to do more work, such as on-site atmospheric composition determination, etc., and, in the laboratory It is also difficult to carry out the synthetic simulation of atmospheric environment parameter components, the workload is large, and the cost is high. Because it is difficult to obtain the real value, it will bring large errors to the determination of critical humidity.

Images