Pipeline interface air tightness detection device and detection method

Abstract

The invention relates to the field of pipeline air tightness detection, and provides a pipeline interface air tightness detection device and detection method. The detection device comprises sealing pieces arranged on the two sides of a pipeline connector, the sealing pieces on the two sides are correspondingly used for forming sealing fit with the inner walls of pipelines on the two sides of the pipeline connector, and a surrounding cavity is formed between the sealing pieces on the two sides. The device further comprises a first inflation pump arranged on the outer side of the pipeline, the first inflation pump is connected with an inflation pipe, a hole matched with the inflation pipe is formed between the sealing piece and the inner wall of the pipeline, the inflation pipe is communicated with the enclosing cavity, and an air pressure sensor is arranged in the enclosing cavity. The air pressure sensor detects the change of air pressure in the enclosed cavity, if the air tightness ofthe pipeline connector does not reach the standard, the change of the air pressure value detected by the air pressure sensor is large, and if the air tightness of the pipeline connector reaches the standard, the change of the air pressure value detected by the air pressure sensor is small or remains unchanged, so that the air tightness of the pipeline connector can be conveniently and accuratelyjudged.

Description

technical field [0001] The invention belongs to the field of pipeline airtightness detection, in particular to a pipeline joint airtightness detection device and detection method. Background technique [0002] Such as figure 1 As shown, the pipeline 1 is usually used to transport gas and liquid. The pipeline 1 is usually connected by screw, flange and welding. In order to ensure the convenient disassembly and installation of the pipeline, the pipeline 1 is usually connected in a detachable way. . If a detachable connection is adopted, there must be a pipe interface 2 between the pipes 1 . In order to avoid leakage of gas and liquid from the pipeline 1, it is necessary to perform an air tightness test on the pipeline interface 2. [0003] In the prior art, after the construction of the pipeline 1 of the water delivery project, the method of testing the air tightness of the pipeline interface 2 mainly adopts the segmental irrigation test, which has problems such as low dete...

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Problems solved by technology

[0003] In the prior art, after the construction of the pipeline 1 of the water delivery project, the method of testing the air tightness of the pipeline interface 2 mainly adopts the segmental irrigation test, which has problems such as low detection efficiency and poor detection effect. During the test, the pipeline interface leaks, which will also affect the stability of the pipeline foundation

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