Switching device for mode transition of DC plasma torches

摘要

The present invention obtains an automatic mode switching of DC plasma torches through, which easily switches DC plasma torches to be run between a transmitting mode and a non-transmitting mode and put the switching device under the monitor and the control of a current sensor and a current level controller; the heat generated by the current passing through can be transferred by a non-combustible liquid driven by a pump and be cooled down through a heat exchanger; and, electric arcs is prevented from happening between two electrodes by the non-combustible liquid.