ADAPTIVE DEVICE OF CATHODE PROTECTION FROM CORROSION OF GROUP OF UNDERGROUND METAL STRUCTURES Russian patent published in 2013 - IPC C23F13/02 

FIELD: metallurgy.

SUBSTANCE: device comprises a transformer, a rectifier, power switches, valves and filters of the main and N additional protected structures, amplifiers, integrators, pulse-width modulators and units of power switches control of the main and N additional protected structures, a sensor of potential difference of the main and N additional protected structures, a sensor of protective potential value of the main protected structure, a setter of potential of the main protected structure, a unit of comparison of the main protected structure, N sensors of protective potential value of additional protected structures, a corrector of the setter of the main protected structure, N correctors of the setter of additional protected structures, N units of comparison of additional protected structures, a scaling amplifier of the main protected structure and N scaling amplifiers of additional protected structures.

EFFECT: using the invention makes it possible to increase efficiency of cathode protection in case of exposure to external electric fields.

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