Liquid cooled plasma arc torch system and method for replacing a

Details Liquid cooled plasma arc torch system and method for replacing a Liquid cooled plasma arc torch system and method for replacing a

1995-01-04

1997-06-03

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912148, 21912139, B23K 1000

Patent

active

056350880

ABSTRACT:
A liquid cooled plasma arc cutting torch system includes a plasma arc torch, a torch receptacle and a cooling system. The torch is removably mounted to the receptacle. The cooling system includes a liquid storage tank, supply and return lines providing fluid communication paths between the tank and the receptacle and a pump for pumping the cooling liquid from the tank through the supply line, the receptacle, the torch and the return line. A valve coupled to the return line includes a nozzle that directs liquid toward an inside top surface of the tank. A flow restriction member may be provided to equalize pressure in the supply with atmospheric pressure when the pump is not operating. A pressurized gas source may be utilized to substantially clear the receptacle, torch and return line of liquid when the pump is not operating.

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