Method of dispersing arc to improve service life of generator and arc plasma generator

An arc generation and generator technology, applied in the direction of plasma, electrical components, etc., can solve the problems of complex structure and high maintenance cost of thermal plasma generators, and achieve the effects of improving life, reducing electrode ablation, and expanding the scope of application.

Inactive Publication Date: 2016-01-06
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It’s just that the thermal plasma generator with this structure has a compl

Method used

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  • Method of dispersing arc to improve service life of generator and arc plasma generator
  • Method of dispersing arc to improve service life of generator and arc plasma generator
  • Method of dispersing arc to improve service life of generator and arc plasma generator

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Embodiment Construction

[0026] The basic idea of ​​the invention is to disperse the arc into a state of lower current density in the channel away from the anode surface, ie to expand the arc discharge gas. From the perspective of the arc channel structure of the generator, the arc flows through the small-diameter confinement channel and the expansion structure channel that promotes the expansion and dispersion of the arc before attaching the anode. The expansion and dispersion of the arc reduces the current density of the arc in the electrode surface attachment area. Therefore, electrode ablation is reduced, and the expansion half angle of the pneumatic expansion structure channel is within 45 degrees.

[0027] figure 1 and 2 An arc plasma generator is given, including a cathode 1, and a confinement and expansion structure channel 2, and the confinement and expansion structure channel 2 is also an anode.

[0028] It is arranged downstream of the cathode along the arc transmission direction, so that...

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Abstract

The present invention relates to a method of dispersing arc to improve the service life of a generator and an arc plasma generator. Before being attached to an anode, the arc flows through a constraint channel of a small diameter and an expansion structure channel of promoting the arc to expand and disperse, the arc is expanded and dispersed, and the current density of the arc in an electrode surface attachment area is reduced, thereby reducing the electrode erosion. The arc dispersion of the present invention enables the electrode erosion to be reduced effectively to thereby improve the service life of the generator, the generator can be designed according to different application conditions, and the application range of the generator is expanded.

Description

technical field [0001] The invention relates to a method for dispersing electric arcs to improve generator life and an arc plasma generator. Background technique [0002] DC non-transferred arc plasma generators have decades of application and research history in a wide range of fields such as industrial manufacturing, scientific exploration, environmental protection, medical care, and national defense. The current density of the arc in the electrode surface attachment area may exceed 10 8 A / m 2 , such high current densities lead to electrode ablation, shortening generator life. At the same time, the pollution of electrode ablation products also limits the application of this type of plasma in the synthesis of fine component materials and the accurate evaluation of material thermal properties in wind tunnel experiments. Therefore, various attempts to reduce electrode ablation to improve plasma generator lifetime have been carried out for decades. [0003] High-efficiency...

Claims

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Application Information

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IPC IPC(8): H05H1/32
Inventor 潘文霞吴承康孟显
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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