Gas pipeline double-plugging device

• Main Authors: GAO JING, XU DEJIA, ZHONG TAO, HAN YONGXIN, JIA LIANGYI, QUAN NI
• Format: Patent
• Language: Chinese; English
• Published: 13.12.2022
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; 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; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The gas pipeline double-plugging device comprises a supporting pipe and a flexible pipe, a plugging air bag is arranged on the outer wall of the flexible pipe, a plugging device is arranged at the right end of the flexible pipe and comprises a support pipe, a sleeve is fixed to the support pipe through a support ring, the sleeve is connected with an extrusion taper sleeve, an elastic plugging piece is arranged in the extrusion taper sleeve, and the elastic plugging piece is connected with the support pipe. The elastic plugging piece comprises an elastic body, a supporting rod and supporting discs distributed at intervals are arranged in the elastic body, a left supporting plate and a right supporting plate are fixed to the two ends of the supporting rod, the left supporting plate is connected with the support ring through a tension spring, expansion ring sets in one-to-one correspondence with the supporting discs are further arranged in the elastic body, and each expansion ring set is provided with an expansi