| 主权项 |
1. A purging system for providing an inert gas to a welding site at a remote location within the bore of a stainless steel pipe, said system comprising:
a reduction connector adapted to be connected to a source of inert gas, said connector having an inlet port and an outlet port, wherein the outlet port is connected to a cylindrical outlet bore within the reduction connector, a gas lens comprised of a substantially homogenous cylinder of metal mesh disposed in the cylindrical outlet bore, a cylindrical nozzle mounted to the reduction connector, an elongated inert gas supply line connecting said inert gas source to said reduction connector by means of an elbow fitting, whereby said gas can be conveyed precisely to the remote welding site within said bore, wherein the cylindrical nozzle is adapted to funnel the inert gas to the welding site, wherein the cylinder of metal mesh has several layers of fine mesh, wherein the cylinder of metal mesh has a passageway extending therethrough, wherein the cylinder of metal mesh has a plug in the passageway, and wherein the plug is a screw. |
