High voltage discharge tube

Abstract

The invention provides a high voltage discharge tube. The discharge tube comprises insulating tubes, connection loops, conducting rods and electrodes, wherein the connection loops are respectively connected at the two ends of the insulating tubes and are used for sealing the insulating tubes; one end of the conducting rods is fixedly arranged at the inner sides of the connection loops; the electrodes are fixed at the other end of the conducting rods; binding posts for connecting the discharge tube to a circuit are arranged at the outer sides of the connection loops; and the insulating tubes are filled with pure hydrogen for extinguishing arc. The discharge tube has the following advantages: the discharge tube has small volume, bears high overvoltage, prevents explosion, protects the environment and does not have polarity (the polarity is not obvious), residual voltage or noises; the overvoltage energy rapidly breaks down and is discharged in the discharge tube and is earthed to be released via the discharge tube, so the discharge tube is suitable for the inflammable and explosive hostile environment; the sealed discharge tube ensures the discharge voltage to be stable and not to be affected by the humidity and air pressure of the ambient environment; and the discharge tube has low capacitance and inductance, thus not affecting the protected circuit.

Description

technical field [0001] The invention relates to an electrical protection element, in particular to a high-voltage discharge tube. [0002] Background technique [0003] The high-voltage discharge tube is a new type of electric vacuum low-carbon environmental protection product. It is a two-electrode fast high-voltage electronic switch tube. Mainly used for vacuum switch (vacuum circuit breaker and vacuum contactor) operating overvoltage and lightning overvoltage protection. Protect high-voltage motors, power transformers, power capacitors, etc. from overvoltage breakdown damage. [0004] Under normal circumstances, when the overvoltage is lower than the discharge value of the discharge tube, the two electrodes of the discharge tube are in a disconnected state, and the electrodes have high insulation performance. When the overvoltage is higher than the discharge value of the discharge tube, the two electrodes of the discharge tube break down quickly (several microseconds),...

AI Technical Summary

Problems solved by technology

[0005]The high-voltage discharge tube in the prior art: it will generate heat during operation, and is not suitable for vacuum switch operation overvoltage and lightning overvoltage protection; it is easy to generate arc after discharge, There is residual pressure, so it is not suitable for use in flammable, explosive and harsh environments; it is not completely sealed, resulting in unstable discharge voltage, and is easily affected by humidity and air pressure in the external environment; poor self-healing, it cannot be used after many times, and needs Replacement maintenance, inconvenient to use

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