Rotatable Plasma Cutting Torch Assembly With Short Connections

摘要

A plasma torch assembly is provided with a torch body having a primary portion and a dielectric portion. The use of the dielectric portion allows for the length of the leads in the torch body to be shorter than known torches, especially in higher current applications. This provides for added stability and longevity of the torch and its components.

主权项

1. A cutting torch body, comprising:
a metallic primary body portion comprising a first cavity in an upstream end of said primary body portion and a second cavity in a downstream end of said primary body portion, and said first and second cavities are separated by a separator portion; a dielectric torch body portion which is inserted into said first cavity, where an upstream end of said dielectric portion extends beyond said upstream end of said primary body portion; at least one high voltage pulse electrical conduit which passes through said first cavity, said separator portion and said second cavity, and where said at least one high voltage pulse electrical conduit has an upstream end which extends beyond said upstream end of said dielectric portion by a distance in the range of 0.25 to 0.75 inches; and at least one cooling fluid conduit which passes through said first cavity, said separator portion and said second cavity, and where said at least one cooling fluid conduit has an upstream end which extends beyond said upstream end of said dielectric portion by a distance in the range of 2 to 6.5 inches.