AC HIGH-VOLTAGE ELECTRIC ARC PLASMA TORCH COOLING SYSTEM AND THE AC HIGH-VOLTAGE ELECTRIC ARC PLASMA TORCH WITH COOLING SYSTEM (EMBODIMENTS) Russian patent published in 2019 - IPC H05B7/20 H05H1/24 H05H1/34 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the field of plasma equipment. In one embodiment, the high-voltage arc plasma torch cooling system contains three electrode assemblies, each of which contains a hollow cylindrical electrode with a coil, forming three arc channels three composite metal nozzles, each of which is connected to the corresponding hollow electrode through the insulating bushing, and each of the arc channel metal branch pipes are interconnected by means of the additional insulating bushing. Each of the insulating bushings contains a channel for the plasma-forming gas supply to the region between the hollow cylindrical electrode and the metal branch pipe, and into the region between the composite metal branch pipe adjacent parts. There is a metal plate for the metal branch pipes other ends hermetic fastening, three connecting nodes, in each of which a part of the corresponding arc channel branch pipe is placed, intended for the electric arc and plasma passage from the hollow electrode to the plasma torch outlet. Outlet unit contains a shell, in which the branch pipes other parts are located, designed for plasma output from the plasma torch, wherein the shell end face is along the perimeter hermetically connected to the said metal plate. At each of the hollow electrode placed end faces washers are located with channels for plasma-forming gas supply into the of the electrode cavity and the coolant supply holes. High-voltage electric arc plasma torch cooling system contains three composite cooling jackets, wherein each of the cooling jacket cavities are communicated by the coolant flow through the holes made in the insulating bushings, and between each of the cooling jackets end face and the metal plate there is a gap for the coolant passage from the metal branch pipes cooling jackets cavities into the output unit shell cavity. Shell end face is attached to the metal branch pipes cooling jackets in the output unit in the immediate vicinity of the insulating bushings. Coolant output unit is placed on the shell from the connecting nodes side. Also disclosed is the high-voltage arc plasma torch cooling system embodiment containing two electrode units.

EFFECT: increase in the high-voltage arc plasma torch operation reliability.

12 cl, 8 dwg