Post-trepanning casing pipe plugging structure

• Main Authors: WANG XUYANG, MA ENDAO, HE QIANG, ZHAO JIAJIAN, BU WEIRONG, BU XINGYU
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a rear trepanning sleeve plugging structure which comprises a flange inner pipe and a flange outer pipe, the flange inner pipe is arranged in the flange outer pipe, one end of the flange outer pipe is provided with a first limiting piece, the flange inner pipe is provided with a second limiting piece, the second limiting piece is arranged at the end, away from the first limiting piece, of the flange inner pipe, and the flange inner pipe is in threaded connection with the flange outer pipe. And plugging modules are arranged at the two ends of the flange inner pipe to plug the flange inner pipe. Through the arrangement of the flange inner pipe and the flange outer pipe, the flange inner pipe and the flange outer pipe can be conveniently installed and fixed, wall bodies with different thicknesses can be adapted, and the installation efficiency is improved. 本发明公开了一种后开孔套管封堵结构，包括法兰内管和法兰外管，法兰内管设于法兰外管中，法兰外管的一端设有第一限位片，法兰内管设有第二限位片，第二限位片设于法兰内管上远离第一限位片的一端，法兰内管和法兰外管螺纹连接，法兰内管的两端均设有封堵模块以封堵法兰内管。本发明通过法