A pipeline leakage point sealing device

Abstract

The invention relates to a pipeline leakage point sealing device which can be used for plugging partial leakage points of a pipeline. The technical scheme is as follows: an upper shell and a lower shell are combined and covered on the outside of a pipeline leakage point, and a sealing gasket is compacted between the shells in a tongue-and-groove mode; the shells and pipeline are annularly provided with a sealing packing; and a regulating shaft is utilized to compact the sealing packing onto the ends of the shells through a stay bar. The pipeline leakage point sealing device has the advantages of simple structure and high practicality. The axial sealing and radial sealing are separated and can be regulated respectively, so that the sealing effect can be ensured more easily; and the compacting force of the filler can be regulated by simply rotating the regulating shaft, so the operation is more convenient.

Description

technical field [0001] The invention relates to a pipeline leakage point sealing device. Background technique [0002] Pipeline damage can be roughly divided into three categories: the first category is local small damage, such as leakage from small holes or small cracks. Such leaks are usually caused by localized corrosion or welding defects. The second type is local damage, which needs to add a protective cover outside the steel pipe or replace the damaged part with a short pipe. This type of damage is most common, such as when a ship's anchor is hooked. The third category is that large-scale damage occurs on a relatively long pipe section, resulting in a significant reduction in the axial strength of the pipe. This situation requires the replacement of the damaged section with a long pipe section. [0003] Local leakage of pipelines due to local corrosion or welding defects is the most common failure mode. At present, it is usually repaired by partial replacement. P...

AI Technical Summary

Problems solved by technology

The third category is that large-scale damage occurs on a relatively long pipe section, resulting in a significant reduction in the axial strength of the pipe

It is difficult to adjust the pretightening force in this way, and it is often difficult to ensure that the two sealing methods are effective at the same time.

[0013] To sum up, for high-pressure and high-risk pipelines, the technology and equipment for external strengthening and repairing local leakage points are still immature, and the innovation and research and development of related technologies have great application value

Images