Arc plasma generator

Abstract

The invention provides an arc plasma generator, and relates to the technical field of plasma generators, and the arc plasma generator provided by the invention comprises a cathode, an insulating support assembly, a middleware, an air inlet part, an insulating part and an anode; the cathode is connected to the top end of the insulating supporting assembly; the middle part, the air inlet part, the insulating part and the anode are clamped on the insulating supporting assembly from top to bottom, the middle part is provided with a first plasma channel, the cathode penetrates through the top end of the insulating supporting assembly and extends into the first plasma channel, and the anode is provided with a second plasma channel communicated with the first plasma channel through the air inlet part and the insulating part; the gas inlet piece is used for distributing the shielding gas into the second plasma channel and enabling the surface of the second plasma channel to form spiral shielding gas. The arc plasma generator can increase the arc voltage, reduce the arc current, constrain the plasma jet, improve the characteristics of the plasma in the arc root attaching area, stabilize the arc and inhibit the electrode ablation.

Description

technical field [0001] The invention relates to the technical field of plasma generators, in particular to an arc plasma generator. Background technique [0002] The arc plasma generator is a device that generates high-temperature plasma through the discharge between electrodes. Usually, the discharge between the electrodes can form a high temperature of more than 10,000 degrees, and the temperature of the generated plasma jet is also more than 1,000 degrees. Therefore, DC arc plasma generators are usually used as high-temperature heat sources in various scenarios. For example, high-temperature arcs can melt metal and ceramic powders for the preparation of various functional coatings, and can also be used for waste treatment in the field of environmental protection, as well as for ultra-fine powder synthesis, cutting, and even smelting steel, etc. It has a very wide range of applications in various fields. [0003] At present, there are two outstanding problems in the prac...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two outstanding problems in the practical application of arc plasma generators: the first is the instability caused by the jumping of the arc roots along the axial direction, which affects the production process; the second is the accumulation of the arc roots. Anode ablation caused by attachment to the electrode surface not only affects the production process, but also directly determines the service life of the generator

Therefore, the magneto arc greatly increases the complexity and unreliability of the plasma generator system

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