Large-diameter pipeline sealing performance testing device and method

Abstract

The invention discloses a large-diameter pipe sealing performance detection device, which includes: a cylindrical body; respectively surrounds the two ends of the cylindrical body, and after inflated, contacts with the inner wall of the pipe to be tested and is in contact with the cylindrical body The outer wall of the pipe to be tested and the inner wall of the pipeline to be tested form two annular airbags with a closed cavity; the air hole opened through the annular airbag is the air pump for inflating the annular airbag; the first through hole opened through the cylindrical body is the air pump for the said annular airbag A booster pump for water injection and pressurization in the airtight cavity; several sector blocks that are respectively arranged on the two end faces of the cylindrical body and can prevent the annular airbag from detaching from the cylindrical body after water injection and pressurization in the airtight cavity plate. The invention discloses a method for detecting the sealing performance of a large-diameter pipeline by using the above-mentioned large-diameter pipeline sealing performance detection device. By using the above-mentioned device and method, the sealing performance test of pipelines under high water pressure can be realized, and it is applicable to the sealing performance test of various large-diameter pipelines.

Description

technical field [0001] The invention relates to a pipeline sealing performance detection technology, in particular to a large-diameter pipeline sealing performance detection device and method. Background technique [0002] In the existing civil engineering technology, large-diameter pipeline projects often have technical requirements for pipeline sealing performance. Water pressure test to check its sealing performance. [0003] However, in the prior art, when detecting the sealing performance of large-diameter pipelines (for example, pipelines with an inner diameter greater than 1.5 meters), there are various difficulties, so there is no ideal one for the time being in the prior art. Detection method. For example, in the relevant acceptance regulations of pipeline engineering, it is often used to build sealing walls at both ends of the pipeline to be tested, and then fill the sealed pipeline to be tested with water and pressurize to test the sealing performance of the pip...

AI Technical Summary

Problems solved by technology

[0005] In summary, due to the above-mentioned various problems in the above-mentioned detection methods, it is difficult for various large-diameter pipeline sealing performance detection methods in the prior art to realize the sealing performance detection under high water pressure, and the scope of application is narrow, so It is difficult to be widely used in the sealing performance detection of various large-diameter pipelines

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