the process of maintenance of a cathodic protection against corrosion and device for implementing this process

摘要

in accordance with the invention, the process of cathodic protection against corrosion using a single electrode, the anode connects to the positive pole of a source of electrical power.the negative pole is connected to the object to protect, in a case of this kind in a kettle.according to an essential feature of the invention, the intensity of the current to maintain the process is periodically varied in increase or decrease.for a predetermined time, a predetermined percentage value relative to the value of the system.and during this period of reduced lending is measured by the potential difference between the kettle and the anode.this potential difference is compared by a comparator with a reference value predetermined.and the deviation is used to determine the intensity of the current in the phase of full power immediately following.