A method and device for reducing arc plasma generator electrode ablation

A technology of arc plasma and generator, which is applied in the direction of plasma and electrical components, and can solve the problems of complex structure and high maintenance cost of thermal plasma generators

Inactive Publication Date: 2018-01-23
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 complex structure, high maintenance cost, and a high-voltage power supply design

Method used

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  • A method and device for reducing arc plasma generator electrode ablation
  • A method and device for reducing arc plasma generator electrode ablation

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Embodiment Construction

[0029] The basic idea of ​​the present invention is to carry out mechanical knurling, wire drawing, sandblasting, shot blasting and other treatments on the electrode surface of the arc plasma generator to change the electrode surface morphology, stress state, microstructure and crystal phase structure, thereby changing the electrode surface. The energy condition of the arc will affect the attachment reaction energy of the arc attached to the electrode surface or disperse and micronize the attachment points, thereby reducing electrode ablation and improving the operation stability and life of the arc plasma generator.

[0030] figure 1 Provided is an arc plasma generator for reducing electrode ablation, a cathode 1 , an intermediate section 2 , an anode 3 , an insulating member 4 and an outer sleeve 5 . The middle section 2 is arranged downstream of the arc transmission direction of the cathode 1; the anode 3 is surface-treated to make the anode 3 have a specific surface struct...

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Abstract

The invention relates to a method and a device for reducing arc plasmatron electrode ablation. The arc plasmatron mainly comprises a cathode, an anode, an insulation member and an outer sleeve. Mechanical knurling, wire drawing, sand blasting and shot blasting for a surface of an arc plasmatron electrode are carried out, the electrode surface appearance, a stress status and the microscopic organization and the crystal phase structure are changed, so the energy state of the surface of the electrode is changed, the attachment reaction energy of arcs attached to the surface of the electrode is influenced, or micro attachment points are scattered, and thereby electrode ablation of the arc plasmatron can be reduced.

Description

technical field [0001] The invention relates to a method and a device for reducing electrode ablation of 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 forms of generators are even more diverse, from the most commonly used structure with only cylindrical cathode and tubular anode, tube arc, laminated type, to a wide variety of special structures. Regardless of the structure, use and power level of the non-transferred arc, the common feature is that the gas discharge arc is used as the current channel to connect the cathode and the anode. In the flowing argon, nitrogen, hydrogen, air and other gases or mixed gases, a discharge arc is generated between the cathode and the anode and the working gas is heated to form a hot plasma jet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H1/48
CPCH05H1/48
Inventor 潘文霞吴承康孟显
Owner INST OF MECHANICS CHINESE ACAD OF SCI
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