Magnetic ferric oxide electrode

Abstract

The invention provides a magnetic ferric oxide electrode, comprising a hollow cylinder with a bottom, an internal plated copper layer, a cavity, an insulating material layer, a PVC (Polyvinyl Chloride) pipe and a cable, wherein the cable penetrates through the PVC pipe and the insulating material layer to be electrically connected and fixed with the internal plated copper layer; epoxy resin is adopted as the insulating material to form a flow guide channel; the central part of the cavity is filled with polystyrene and integrally coated by using the hollow cylinder with the bottom to form an electrode main body; and the hollow cylinder with the bottom is made by using Fe3O4 as a main material. The magnetic ferric oxide electrode provided by the invention has the advantages of excellent conductive property, better uniformity of potential, current and temperature rise distribution on the surface of the electrode main body while the current passes through the electrode main body, smaller polarization potential of the used material, large allowable current intensity, low consumption rate of the anode, more superior corrosion resistance and stability, longer service life, smaller dependence of the selected raw material on the temperature, uneasiness in cracking and damaging, comparatively low price, convenience for construction, high cost performance and broad application prospect.

Description

technical field [0001] The invention relates to the field of grounding and anticorrosion of power systems, and specifically provides a magnetic iron oxide electrode. Background technique [0002] In order to ensure the long-term and effective operation of the DC grounding electrode of the HVDC transmission system within the design period, the selection of the grounding electrode material is a key issue. Materials used as ground electrode feeders must have good electrical properties (such as electrical conductivity) and physical and chemical properties (such as resistance to mechanical damage and corrosion). The basic requirements include: ①good electrical conductivity; ②large flow rate; ③corrosion resistance, low consumption, and long life; ④certain mechanical strength, wear resistance, impact and vibration resistance; ⑤materials are readily available and cost-effective. [0003] Electrode materials can be divided into three categories: soluble materials (such as iron, copp...

AI Technical Summary

Problems solved by technology

[0006] Chinese patent 200820067181.X "anti-corrosion ground electrode" is composed of a metal conductor and a conductive polymer material anti-corrosion layer coated on the outside of the metal conductor, which has a certain anti-corrosion effect, but because the ground electrode is still used in domestic conventional The way the cable head is welded at the head end of the electrode will inevitably make the current distribution on the electrode surface uneven, resulting in local heating and serious corrosion

However, magnetic iron oxide electrodes produced by sintering techniques are brittle, limited in shape and size, and cannot be machined

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