47 results about "Electrode erosion" patented technology

A high power DC steam plasma torch system (S) includes a steam plasma torch assembly (1) wherein superheated steam (46) is used as the main plasma forming gas, thereby resulting in a very reactive steam plasma plume. The superheated steam (46) is injected internally directly into the plasma plume via a ceramic lined steam feed tube (25) for reducing condensation of steam before reaching the plasma plume. The superheated steam (46) flows through a gas vortex (16) which has tangentially drilled holes thereby resulting in a high speed gas swirl that minimizes electrode erosion. In the present steam plasma torch system (S), the plasma torch assembly (1) is ignited using an ignition contactor which is housed external to the plasma torch assembly (1). The superheated steam (46) is injected into the plasma plume using a water cooled steam vortex generator assembly (15).

The invention relates to a field-distortion oil-medium trigger switch comprising a closed non-metal casing, a high-voltage electrode, a low-voltage electrode, a trigger electrode and an external trigger switch. The high-voltage electrode and the low-voltage electrode are arranged in the non-metal casing. The non-metal casing is filled with transformer oil. The high-voltage electrode that is circular is arranged on the inner side of the bottom of the non-metal casing. The trigger electrode comprises a trigger electrode stem and a trigger disc; the trigger disc is arranged between the high-voltage electrode and the low-voltage electrode, one end of the trigger electrode stem is fixedly connected with the trigger disc, and the other end of the trigger electrode stem extends out of the top of the non-metal casing to be electrically connected with the external trigger switch. The casing, the high-voltage electrode, the low-voltage electrode, the trigger electrode stem and the trigger disc are arranged coaxially. Since the trigger electrode structure is introduced, field distortion of working clearance, control of ON time and multiple discharge channels are realized, range of work voltage of the switch is expanded, electrode erosion degree is lowered, and the field-distortion oil-medium trigger switch is applicable to switching-on of hundreds of nanosecond to several microsecond megavolt level voltage pulse.