Purging device for pipe welding
OwnerJin Woo Parkinventor
Life of this patent
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Abstract
Disclosed is a purging device for pipe welding, comprising: a pair of sealing tools that are disposed inside a pipe, expand by supplied air and are in contact with an inner wall of the pipe; and a connection pipe that is disposed between the pair of sealing tools, is a cylindrical body, wherein the sealing tools are respectively fixed to either side end of the connection pipe and the connection pipe is provided with a gas nozzle for discharging inert gas supplied from the outside, wherein each of the sealing tools further comprises a blocking layer that is flame retardant and is coupled in such a manner as to surround an outer circumferential surface of each of the sealing tools.
Claims10
A purging device for pipe welding, comprising:
- a pair of sealing tools 10 that are disposed inside a pipe P, expand by supplied air and are in contact with an inner wall of the pipe P;
- and
- a connection pipe 20 that is disposed between the pair of sealing tools 10, is a cylindrical body, wherein the sealing tools 10 are respectively fixed to either side end of the connection pipe 20 and the connection pipe 20 is provided with a gas nozzle 22 for discharging inert gas supplied from the outside,
- wherein each of the sealing tools 10 further comprises a blocking layer 50 that is flame retardant and is coupled in such a manner as to surround an outer circumferential surface of each of the sealing tools 10.
Dependencies are inferred from the claim text.