UNATTENDED CATHODIC PROTECTION STATION Russian patent published in 1998 - IPC

FIELD: equipment for protection from corrosion of underground and underwater metal structures; may be used for protection from corrosion of gas pipelines, water pipelines, communication cables, oil pipelines, ship side plating, ballast tanks, sea and river buoys, piers, bridge substructures, sheet piling, etc. SUBSTANCE: station includes voltage regulator, transformer with output to rectifier bridge, measurement element, comparison unit, amplifier, thyristor control unit, protected structure and anode grounding. measurement element is made in the form of balanced bridge whose one arm is connected in series to anode grounding circuit, adjacent arm is connected in parallel to ground resistance, and two other arms are connected with one another in series and serve to shunt output of rectifier bridge whose plus terminal is connected by means of cable to anode grounding, and minus terminal to protected structure. EFFECT: higher efficiency and of cathodic protection with station operating in automatic mode with stabilization by ground resistance and simplified operation. 1 dwg