ELECTRIC-ARC PLASMATRON WITH WATER STABILISATION OF ELECTRIC-ARC Russian patent published in 2014 - IPC H05B7/18 H05H1/32 

FIELD: physics.

SUBSTANCE: invention relates to electric-arc plasmatrons with water stabilisation of electric-arc, and can be effectively used when cutting any metal. The electric-arc plasmatron has coaxially and series-arranged cooled cathode assembly, insulator, swirl chamber, a system for feeding plasma-supporting gas and liquid and an anode assembly with an anode nozzle, placed in the inter-electrode gap relative the cathode assembly and forming a cavity for liquid stabilisation transitioning at the outlet into a water screen. The cavity in the anode nozzle is made of two interfaced conical surfaces: a wall which is 2/3 of the length of the initial section of the cavity makes an inclination angle α₁=5-10°, then α₂=30-45° to the cylindrical section at the outlet, the length of which is equal to 0.5-0.8 times its diameter, wherein parameters of the anode nozzle define the nature of liquid stabilisation of the plasma jet and protective characteristics of the water collector-distributor.

EFFECT: simple design, high power of the plasmatron, enthalpy of the obtained plasma and cutting speed.

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