A corrosion monitoring device and method for marine equipment under wet-dry alternating environment

By designing a corrosion monitoring device for alternating wet and dry environments on the surface of marine equipment, and using an online measurement and transmission module to collect cathodic protection potential in wet conditions and current data in dry conditions, which is then converted into low-frequency impedance data, the problem of the inability of existing technologies to effectively monitor the corrosion status of marine equipment in alternating wet and dry environments is solved, and real-time and accurate corrosion status monitoring and early warning are achieved.

CN122150098APending Publication Date: 2026-06-05CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA SHIPBUILDING INDUSTRY CORPORATION NO725 RESEARCH INSTITUTE
Filing Date
2026-03-27
Publication Date
2026-06-05

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Abstract

The application provides a corrosion monitoring device and method for marine equipment in a wet-dry alternating environment, the corrosion monitoring device comprises an online measurement and transmission module, the online measurement and transmission module is connected with a corrosion monitoring probe and an environment probe respectively, a hydraulic selection switch is arranged between the corrosion detection probe and the online measurement and transmission module, the corrosion detection probe is used for collecting cathode protection potential data in a wet state, collecting current data in a dry state and converting the current data into low-frequency impedance data through the online measurement and transmission module. The application is suitable for automatic identification and in-situ, long-time and continuous measurement of key corrosion evaluation parameters of marine equipment in a dry state and a wet state environment, does not need to pre-bury a monitoring probe, is convenient to install and apply, is widely applicable, has the characteristics of directly reflecting the corrosion protection state of equipment and being repeatedly used and the like.
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