| 摘要 |
FIELD: physics.SUBSTANCE: method involves increasing electrode cooling intensity by creating an electrically active surface of microvortices of gas at said electrode and removing heat through the microvortices into an axial plasma stream while rotating the electrode with an electrode holder and vortex flow of the plasma-supporting gas around a common axis in opposite directions. The plasmatron has an air turbine, a turbine wheel shaft on whose end there is a nonconsumable electrode which mounted with electrical insulation in a journal on gas bearings with possibility of rotation in a gas-discharge chamber with a plasma-supporting gas swirler, an inlet pipe of the working chamber of the turbine for inlet of an air stream in the direction towards the blades of the turbine wheel, mounted at a tangent with possibility of the shaft rotating in a direction opposite the direction of swirling of the plasma-supporting gas in the discharge chamber. In the electrode assembly of the plasmatron, the electrode holder is connected to a centrifugal heat pipe in the evaporation zone, whose cooling fins in the condensation zone are in form of blades of the turbine wheel blown by a gas-air stream. In the adiabatic zone, the heat pipe has a heat-insulating and electrically insulating coating.EFFECT: intensification of the process of cooling heat-loaded components of a plasmatron and high heat and mass transfer from the electrode to the plasma-treated article.7 cl, 7 dwg |
