Separable pipeline internal tensioning leaking stoppage device

• Main Authors: LIU XIAOFEI, WANG HUIHUI, SHEN YIFAN, TIAN AOXIANG, YANG MENGLAN, LUO QIHAN, LIANG PEIJUN
• Format: Patent
• Language: Chinese; English
• Published: 22.01.2021
• 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 utility model relates to the technical field of pipeline construction, in particular to a separable pipeline internal tensioning leaking stoppage device which comprises a reducing tensioning pipetightly pressing the inner wall of a pipeline after being locked, a linkage assembly supporting locking of the reducing tensioning pipe after being unfolded, and a driving assembly driving the linkageassembly to be unfolded. The driving assembly and the linkage assembly are detachably mounted in the reducing tensioning pipe; the driving assembly comprises a screw rod; the linkage assembly comprises at least one group of folding support arms; one end of each folding supporting arm abuts against the deformable position of the inner wall of the reducing tensioning pipe, and the other end of eachfolding supporting arm is connected with a nut of the lead screw; through linear motion of the lead screw nut, the folding supporting arms are unfolded along the radius of the section of the reducingtensioning pipe, and theref