Detecting device and detecting method for pipeline leakage

Abstract

The invention discloses a detecting device for pipeline leakage. The detecting device includes a sound collection unit and an external host computer; a housing of the sound collection unit includes a metal housing in the inner side and an expanded plastic layer in the outer side; a hollow interlayer is arranged in the metal housing; the expanded plastic layer is provided with a plurality of through holes which communicate with the hollow interlayer; the metal housing is fusiform; a sonic sensor is fixed on a central axis of the metal housing through a support; and a first memory and a storage battery are fixed on the internal top and the internal bottom of the metal housing respectively. The invention further provides a method for detecting leakage point by using the detecting device. Acquired sound wave signals are filtered and selected, invalid signals can be reused, and then a noise reduction effect can be achieved, and the distortion rate of sample signals can be decreased after noise reduction. The detecting device and the detecting method can overcome the defects in the prior art, and can detect non-metal large diameter pipeline.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a pipeline leakage detection device and a detection method thereof. Background technique [0002] Water supply pipeline leakage detection is an important work content for water companies to save water resources, reduce production and sales, and improve their own economic benefits. At present, there are many methods and technologies for water supply pipeline leakage detection, such as flow method, pressure method, noise method, listening method, and correlation analysis method , pipeline endoscopic method, ground penetrating radar method, surface temperature measurement method and gas tracer method, etc., the above methods and technologies have solved many pipeline leakage problems, but the effect on non-metallic and large-diameter pipelines is very unsatisfactory. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pi...

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Problems solved by technology

[0002] Water supply pipeline leakage detection is an important work content for water companies to save water resources, reduce production and sales, and improve their own economic benefits. At present, there are many methods and technologies for water supply pipeline leakage detection, such as flow method, pressure method, noise method, listening method, and correlation analysis method , pipeline endoscopic method, ground penetrating radar method, surface temperature measurement method and gas tracer method, etc., the above methods and technologies have solved many pipeline leakage problems, but the effect on non-metallic and large-diameter pipelines is very unsatisfactory

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