HYBRID ANODE STRUCTURE FOR CATHODIC PROTECTION ENABLING CATHODIC PROTECTION USING INSOLUBLE ANODE USED AS CORE EVEN AFTER SACRIFICIAL ANODE IS CONSUMED BY USING HYBRID ANODE FOR CATHODIC PROTECTION DURING CONSTRUCTION OF SACRIFICIAL ANODE SYSTEM

摘要

PURPOSE: To provide a hybrid anode structure for cathodic protection which applies a core of consumable sacrificial anode to an insoluble anode material to sustain cathodic protection on an object without reconstruction of the anode through an impressed current type cathodic protection even after a consumable anode is consumed by sacrificial anode type cathodic protection. CONSTITUTION: In an anode structure applied to a metal structure in an electrolyte such as underground or underwater to perform cathodic protection, the hybrid anode structure for cathodic protection comprises a consumable sacrificial anode part(2) installed to proceed a sacrificial abode type cathodic protection; an insoluble anode part(1) applied to the consumable sacrificial anode part as a core to proceed an impressed current type cathodic protection; and an anode lead wire(3) for electrically connecting the insoluble anode part to a cathodic protection object, wherein the consumable sacrificial anode part surrounds the core of the insoluble anode part, wherein the consumable sacrificial anode part is formed of any one anode material selected from aluminum alloy anode, zinc alloy anode and magnesium alloy anode, wherein size and shape of the consumable sacrificial anode part are determined according to life of a desired anode, wherein the consumable sacrificial anode part is fabricated in a rectangular rod, semispherical or cylindrical shape, wherein the insoluble anode part is formed of any one insoluble anode material selected from high ferrosilicon anode, MMO anode and platinum-titanium anode, wherein size and shape of the insoluble anode part are determined according to life of a desired anode, and wherein the insoluble anode part is fabricated in a rod, tube, reticular or wire shape.