Do you know Flexible anode?
The flexible anode consists of a copper core and a polymer that conducts electricity, usually with added toner. In this combination, it is obvious that the copper core in the middle conducts electricity, while the surrounding polymer is mainly electrochemical. Flexible anode is a kind of long linear, flexible and cable-type auxiliary anode, which is called flexible anode because of its soft mechanical strength. It mainly includes conductive polymer anode, metal oxide MMO anode and platinum-nb alloy anode. It can be laid close to the pipe and tank bottom, so that the protection current is not affected by the surface state and geographical conditions of the protected body and evenly distributed, playing a role that the conventional auxiliary anode can not play.
Structure drawing of MMO/Ti wire flexible anode
Features of flexible anode
1. Even distribution of current and potentia.
Even distribution of output current can ensure even distribution of current and cathodic protection even if the pipeline anticorrosion layer is seriously damaged. The protection potential is evenly distributed to avoid over-protection and under-protection.
2. Easy installation.
Can be laid directly close to the pipeline, greatly reduce current leakage, improve the utilization efficiency of protection current; The construction is simple and flexible, the user can cut into any length or appropriate bending according to the site conditions; At the same time, because the flexible anode is pre-filled with coke, no filler is required for field installation, greatly reducing the construction intensity.
3. The interference of stray current is small.
Strong pertinence, can minimize the stray current interference to other metal structures, can solve the shielding and interference problems in the complex pipe network area.
4. Good sealing, small grounding resistance.
Conductive polymer anode without contact in the middle, good sealing, to prevent the copper core from chemical corrosion, to ensure the service life of the anode; At the same time, because the flexible anode is reliably laid near the pipeline for a long distance, the pipeline protection can achieve a low grounding resistance, which is conducive to reduce the system output and improve the economy of cathodic protection.
Flexible anode end
Application of flexible anode
1. Old pipes with aging cover;
2. 2. Intricate pipe network;
3. 3. Outer wall of tank bottom;
4. 4, Long distance, small distance parallel pipeline;
5. 5. High resistivity environment.
Flexible anode anode, which is also called cable shape early mainly to solve coating aging aging pipeline cathodic protection problem, currently widely used new and existing pipeline and storage tank of cathode protection, including oil, natural gas pipeline, oil storage tank bottom cathodic protection, city gas pipeline distribution pipeline, water and sewage pipeline cathodic protection, etc. It can be widely used in petrochemical, metallurgical, power plant water treatment and other industries. Within the allowable operating current range, its service life can be expected to reach more than 25 years.
