Equipotential electrode for converter valve

Abstract

The invention provides an equipotential electrode for a converter valve. The equipotential electrode for the converter valve comprises a wire clip section, a hexagon nut and an electrolytic corrosion preventing cone, wherein the wire clip section, the hexagon nut and the electrolytic corrosion preventing cone are arranged along the same axial line in sequence, and threads are arranged between the hexagon nut and the electrolytic corrosion preventing cone. The equipotential electrode is arranged at the tail end of a water pipe of a valve die block of the converter valve, the electrolytic corrosion preventing cone is arranged axially along the pipe diameter of the water pipe, and the axial line of the electrolytic corrosion preventing cone is parallel to the flow direction of the water flow and the flow direction of currents of the converter valve. Compared with the prior art, the equipotential electrode for the converter valve is obvious in electrolytic corrosion preventing effect, simple in structure, easy to mount and demount, high in material utilization rate and long in service life.

Description

technical field [0001] The invention relates to an equipotential electrode, in particular to an equipotential electrode for a converter valve. Background technique [0002] As my country's high-voltage direct current transmission technology becomes increasingly mature, the construction of direct current transmission projects is in a golden period of development. In the high-voltage direct current transmission system, the cooling system is an important component of the heat dissipation system of the converter valve, and its operation directly affects the power transmission capacity of the entire direct current system. Therefore, it is particularly important to ensure the stable, reliable and efficient operation of the cooling system. [0003] The water distribution system of the converter valve is widely used in the cooling of the DC transmission converter valve. The pipelines of the water distribution system need to be fixed to prevent the potential difference between the i...

AI Technical Summary

Problems solved by technology

[0004] The currently used equipotential electrode assembly has a complex structure and consists of multiple parts, which is troublesome to install and disassemble, and the reliability of the multi-channel sealing ring is low; special holes need to be drilled on the water pipe for installation, which increases the joints and leakage points of the waterway and reduces the sealing of the waterway Reliability; the equipotential needles in the equipotential electrode assembly are arranged radially along the pipe diameter, and the equipotential needles are in a vertical and non-parallel state with the flow of water and current. Under the action of the current, the equipotential needles corrode from the root, which may not reach 35 In addition, the root corrosion cannot protect the sealing ring of the equipotential root, and the chlorine current corrosion of the O sealing ring cannot be avoided, thereby reducing the sealing performance of the waterway; considering the activity of the metal, the general equipotential needle material is made of expensive platinum. expensive

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