Air cylindrical plasma generator gap structure

Abstract

The invention discloses an air cylindrical plasma generator gap structure. A cathode and an anode are hollow cylindrical bodies arranged at the middle lower end; a gap is located at the junction of two electrodes. A gas ring cylinder is arranged at the gap, and W inclined gas guide through holes are formed in the gas ring cylinder; meanwhile, W groups of gap vertical water inlet pipes are arrangedand are circumferentially and uniformly distributed at intervals. The gap arc striking is performed, and the functions of water guiding, air guiding, positioning and the like are achieved, thereby meeting the requirement for overall design of the cylindrical cathode and anode. An electric arc moves on the inner walls of the two cylinders, so the heating surface is greatly increased, the temperature of the cylinder wall directly cooled by water is low, the electrodes are not easy to burn out, and the temperature of the sprayed electric arc is as high as 3,000 DEG C; and the requirement of longservice life of high-temperature treatment is met. A water cooling system is reversely discharged from an upper end water inlet pipe, a cathode spiral water channel, a gap water inlet pipe, an anodespiral water channel and a lower water return tank through the annular water outlet channel and the water outlet pipe. The two spiral water channels and the two cooling heat exchange surfaces are large, so that the cooling effect is extremely optimized. The invention not only solves the problems of expensive inert gas material, high cost, short structural life and difficult maintenance in the prior art, but also solves the problem of long service life in high-temperature treatment, especially the treatment of industrial hazardous wastes.

Description

[0001] (1) Technical field: [0002] The invention relates to a gap structure of an air cylindrical plasma generator, relates to a plasma generator using air as a medium, and belongs to the category of ion generation and spark gap (H01T). [0003] (two) background technology: [0004] The existing non-transferred arc plasma generator basically uses inert gas as the working medium (carrier), and its material is expensive, the cost is high, the structure life is short, and it is difficult to maintain. People began to turn to the development and research of plasma generators with air as the medium. [0005] Reference document 1 Chinese invention patent (Patent No. ZL022761748) discloses a <Plasma generator with air as the medium>. From the point of view of the moving structure, it is still the traditional non-transferred arc structure, that is, the cathode is fixed on the top to generate a fixed arc; in terms of the life of the plasma generator, there is no improvement. Th...

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Problems solved by technology

Therefore, the above-mentioned features of simple structure, convenient maintenance, low cost, and long life are also limited and partial; the biggest problem is that the scope of application is limited, especially in the treatment of high-temperature industrial hazardous waste.

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