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.