METHOD FOR CARRYING OUT ELECTRIC PROTECTION OF ARTICLE BURIED IN GROUND

摘要

PURPOSE:To prevent the corrosion of an article buried in the ground by connecting the article to the negative electrode of a solar cell and an electrode buried in the ground to the positive electrode and by allowing an electric current for electric protection to flow in the article from the cell as a power source. CONSTITUTION:An article 8 such as a gas pipe buried in the ground is electrically connected to the negative electrode of a solar cell 6. A hardly consumable electrode 7 of high ferrosilicon or the like is buried in the ground, and it is electrically connected to the positive electrode of the cell 6. An electric current I for electric protection flows in the article 8 from the cell 6 as a power source through the electrode 7 in the direction of arrows, so the corrosion of the article 8 is prevented.