Sealing device, system and method for detection of gas tightness of pipeline

Abstract

The invention provides a sealing device, a system and a method for detection of the gas tightness of the pipeline. The sealing device for detection of the gas tightness of the pipeline includes an inner wall sealing assembly, an outer wall sealing assembly and an auxiliary sealing device, wherein a gap is formed between the inner wall sealing assembly and the outer wall sealing assembly, a pipeline to be detected is inserted in the gap, and the auxiliary sealing device enables the inner wall sealing assembly and the outer wall sealing assembly to be mutually extruded. The system for detection of the gas tightness of the pipeline at least comprises the sealing device for detection of the gas tightness of the pipeline, which is mentioned above, and the detection sealing device for the gas tightness of the pipeline is arranged at one end of the pipeline to be detected. The invention further provides the method for detection of the gas tightness of the pipeline. According to the sealing device, the system and the method, the inner side and the outer side of the end portion of the pipeline are sealed through the inner wall sealing assembly and the outer wall sealing assembly respectively to enable a cavity inside the pipeline to be sealed, the inner wall sealing assembly injects air into the inner cavity, and the pipeline tightness can be detected by testing the pressure change of the inner cavity, so that the sealing device is convenient and practical and capable of improving the efficiency.

Description

technical field [0001] The invention relates to the field of pipeline detection, in particular to a pipeline airtightness detection sealing device, a pipeline airtightness detection system and method. Background technique [0002] At present, the air tightness test of the drainage pipe is a water test operation. The detection labor intensity is high, the production efficiency is low, and the personnel operation is intensive. At the same time, there are inspection blind spots, resulting in large fluctuations in production quality. Moreover, the water inspection not only needs to dry the water on the outer surface of the drain pipe, which leads to low production efficiency, but also wastes water resources and causes water resource pollution. Contents of the invention [0003] The invention aims to provide a pipeline airtightness detection sealing device, a pipeline airtightness detection system and a method which are easy to operate and improve detection efficiency. [00...

AI Technical Summary

Problems solved by technology

The detection is labor-intensive, the production efficiency is low, and the operation is intensive

At the same time, there are inspection blind spots, resulting in large fluctuations in production quality

And the water inspection not only needs to dry the water on the outer surface of the drain pipe, which leads to low production efficiency, but also wastes water resources and causes water pollution

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