Automatic root welding pipe orifice windproof device for long oil and gas pipeline

• Main Authors: PEI YUHUI, NI HONGYUAN, CHEN SHUAI, LIU RUI, FENG DAYONG, LI MING, WANG XUEDONG, ZENG SHIWEI, LU HONGXING, WU ZHONGJIANG, MENG DELONG, ZHOU WEIGUANG, ZHANG YU, XU LIANZHENG, ZHAO YU, LI TAO, CHENG SHOUFA, FU FANGYAN, NING TONG, WANG XUEYONG, ZHANG SIYU, SUN DOUSHENG, CHENG ENBO, SI HAOLIANG, LIU JIANPENG
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2019
• 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 the technical field of long-distance oil and gas pipeline construction operation, in particular to an automatic root welding pipe orifice windproof device for a long-distance oil and gas pipeline. The device comprises a barrel capable of being arranged on the outer side of a pipe opening of the oil and gas pipeline in a sleeving mode, and a blocking plate arranged at abarrel port and capable of blocking the barrel port. The plugging plate comprises a fixed plugging plate connected to the port of the cylinder body and a movable plugging plate connected with the fixed plugging plate through a hinge; handles are arranged on the outer sides of the plugging plates. According to the utility model, cross ventilation in the oil-gas pipeline can be eliminated; the device is simple in structure, reliable in sealing, capable of being disassembled and repeatedly used, capable of avoiding root air hole defects in the welding process, capable of reducing cuts caused bywelding root defects, capa