A pipe blocker

Abstract

The invention relates to a pipeline occluder, which includes a support rod, an expansion ring and a sealing cover. The right end of the support rod is provided with a fixed ring, and the middle part of the support rod is provided with a slip ring; the expansion ring includes first arcs distributed alternately along the circumferential direction shaped part and the second arc-shaped part, the first arc-shaped part is provided with a guide part, the side surface corresponding to the two ends of the guide part and the first arc-shaped part is a guide surface, and a chute is arranged on the guide surface, and the two side walls of the chute There is a guide hole on the top, and the guide hole on the adjacent first arc-shaped piece forms a figure-eight shape. The second arc-shaped piece is provided with lugs, and the lugs correspond to the fixed ring and the slip ring through the first connecting rod and the second connecting rod. Hinged, the two ends of the second arc-shaped part are respectively provided with sliders in the chute, and the two sides of the slider are respectively provided with guide posts in the guide holes; the sealing cover is set on the expansion ring from right to left and respectively It is fixedly connected with the first arc piece. It has the advantages of simple structure, convenient operation, reliable plugging, and strong adaptability. It does not need to open equal-diameter holes in the pipeline, which improves the working efficiency.

Description

technical field [0001] The invention relates to a plugging device, in particular to a pipe plugging device used for opening and plugging gas pipelines. Background technique [0002] In the process of connection, cutting and rerouting of the gas pipeline network, it is often necessary to perform hole sealing operations. At present, the plugging machine used in this field mainly uses the expansion cylinder to seal the pipeline, which has the following problems in practical application: 1. The pipeline must be provided with equal-diameter holes, that is, the pipeline is completely cut off, otherwise the expansion cylinder cannot be used to seal; 2. The difficulty and workload of opening equal-diameter holes is relatively large, which affects the operation efficiency; 3. The expansion cylinder requires a high degree of matching of equal-diameter holes, and frequent sealing is not tight, which affects the reliability of sealing and job security. Contents of the invention [0...

AI Technical Summary

Problems solved by technology

At present, the plugging machine used in this field mainly uses the expansion cylinder to seal the pipeline, which has the following problems in practical application: 1. The pipeline must be provided with equal-diameter holes, that is, the pipeline is completely cut off, otherwise the expansion cylinder cannot be used to seal; 2. The difficulty and workload of opening equal-diameter holes is relatively large, which affects the operation efficiency; 3. The expansion cylinder requires a high degree of matching of equal-diameter holes, and frequent sealing is not tight, which affects the reliability of sealing and job safety

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