Metal oxide anode assembly for cathode protection of ship

A technology of cathodic protection and anode components, which is applied in the field of metal oxide anode components for ship cathodic protection, which can solve the problems of affecting the streamline of the hull, large protection current, and easy damage of the coating, so as to save precious metal resources, long service life, The effect of excellent mechanical properties

Active Publication Date: 2006-10-11
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

Polyvinyl chloride, nylon, laminated phenolic glass steel, etc. have been used as the material of the anode insulation bracket. These materials are prone to aging, unstable performance, and failure when they work for a long time.
[0006] Impressed current cathodic protection systems for ships often use strip-shaped auxiliary anode components, some of which can even reach several meters in length. Although it can reduce the water connection resistance, it cannot be installed on parts of the hull with large curvature

Method used

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  • Metal oxide anode assembly for cathode protection of ship

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Embodiment

[0023]A titanium plate is used as the anode substrate, with a diameter of Φ300mm and a thickness of 10mm. A titanium conductive rod 2 with a diameter of 12mm is welded on the back, and the working surface of the anode body 1 is coated with ruthenium oxide, iridium oxide, titanium oxide, tantalum oxide, A mixed metal oxide conductive coating of tin oxide, wherein the content of ruthenium oxide and iridium oxide is 30% (mol). The anode bracket 3 is made of glass fiber reinforced epoxy resin composite material through compression molding. The anode body 1 is packaged in the molded anode bracket 3 with epoxy resin to make an anode assembly. The anode fixing frame 4 is made of polytetrafluoroethylene, the auxiliary anode assembly is installed in the pre-prepared groove at the stern of the hull, and fixed with 6 bolts. According to the amount of protection current required by the design, a total of 2 auxiliary anode assemblies are used, which are respectively installed on both side...

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Abstract

This invention relates to a shipping cathode protective metal oxide anode assembly, which is composed of anode, conducting bar, insulating bracket and fixing frame, the anode uses titanium as base, which assumes disc shape, the working surface is coated with ceramic compound metal oxide conducting coat, the opposite side is welded with conducting pole with solid titanium bar or copper core compound titanium bar, the anode bracket uses glass fiber to reinforce epoxy resin compound material and shape by thermoforming, the anode is pressed tightly by fixing frame and fixed by bolt, and the fixing frame is made by using corrosion-resistance polymer material. The ship with assistant anode assembly is fit for installing at the part whose curvature half-diameter is shorter, which has well electrochemical capability, not easy to damage, and can work long; and it has long life and well stability.

Description

Technical field: [0001] The invention relates to a metal oxide anode assembly, which is suitable for the applied current cathodic protection system of ships, and is used to prevent seawater corrosion of ship hulls, rudder plates, and propeller propellers, and can also be used to prevent metal oxides such as floating docks, barges, and hydraulic gates. The invention relates to corrosion of structures, specifically a metal oxide anode assembly for ship cathodic protection belonging to the technical field of electrochemical protection. technical background: [0002] The combination of cathodic protection and coating can effectively prevent the corrosion of metal structures such as ships in seawater. According to different methods of providing protective current, cathodic protection can be divided into two methods: sacrificial anode and impressed current. The sacrificial anode method is to generate cathodic protection current by connecting the electronegative anode material to ...

Claims

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Application Information

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IPC IPC(8): C23F13/06
Inventor 许立坤王廷勇魏琼
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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