Plasma cutting torch for underground oil pipe cutting

• Main Authors: LIU JINXU, FENG XINYA, LIU ZHAOHU, WANG MINGZHI, HE CHUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The utility model relates to a plasma cutting torch for underground oil pipe cutting. Ignition powder and a powder column are installed in a shell of the plasma cutting torch. The ignition wire extends into the ignition powder; a thick graphite pipe, a graphite ring and a thin graphite pipe are lined on the inner wall of the shell; the sliding sleeve is slidably arranged on the peripheral side of the shell in a sleeving mode. A first sealing piece is tightly attached between the sliding sleeve and the shell. The nozzle is fixedly connected into the second end of the shell and provided with spraying holes located in the outer side of the shell and distributed in the circumferential direction. The supporting seat is fixedly connected to the nozzle; the sliding sleeve shaft is fixedly connected to the end, away from the nozzle, of the supporting base. The peripheral surface of the sliding sleeve shaft is in sliding fit with the sliding sleeve, and a second sealing piece is tightly attached between the sliding sl