SYSTEM OF AUTOMATIC CORRECTION OF CATHODE PROTECTION STATIONS OPERATION Russian patent published in 2012 - IPC G01N17/02 

FIELD: electricity.

SUBSTANCE: system of automatic correction of cathode protection stations operation comprises the first and second controlled stations of cathode protection, the first and second set point adjusters of the initial protective potential value. Also the system comprises the first and second electrodes of comparison, the first and second units of potential correction, a communication line, the first, second and third sensors of corrosion, the third electrode of comparison, the first, second and third set point adjusters of current potential value along the length of the protected pipeline. Besides, the system comprises the first, second, third and fourth units of comparison of current potentials along the pipe length, the first, second and third set point adjusters of the current corrosion value, the first, second and third integrators, the first, second, third and fourth units of comparison of current corrosion along the pipe length. Also the system comprises the first, second and third scaling amplifiers by potential, the first, second and third scaling amplifiers by corrosion, a summator of potentials. a summator of current corrosion, a set point adjuster of remote point potential, a unit of comparison of a remote point, the first and second inverters.

EFFECT: higher efficiency of pipeline protection against corrosion by automatic correction of potential deviations of protective potential values along pipeline length and maintenance of protective potential value within permissible limits.

1 dwg