High-velocity drainage pipeline defect detection equipment and method

Abstract

The invention provides a large-velocity drainage pipeline defect detection device and method, including a pipeline sonar, a protective shell, a sonar stabilization system, and an energy system. Circumferential scanning, the protective casing is arranged outside one end of the pipeline sonar, the other end of the pipeline sonar extends to the outside of the protective casing, and the sonar stabilization system extends out along the circumference of the protective casing A plurality of support components are used to correct the sonar position of the pipeline. The energy system is connected to the protective shell and electrically connected to the sonar pipeline. As a sonar power supply, the system detects drainage pipes at high flow rates by means of water dragging, which optimizes the detection of pipe defects in large flow pipes, and is easy to operate and highly practical.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a detection device and method for a large flow rate drainage pipeline defect. Background technique [0002] Sonar detector, also known as sonar detector, is an electronic device that uses the propagation characteristics of sound waves underwater to complete underwater detection and communication tasks through electro-acoustic conversion and information processing. There are two types: active and passive. , which belongs to the category of acoustic localization. It uses underwater sound waves to detect, locate and communicate underwater targets. It is the most widely used and most important device in underwater acoustics. [0003] In the urban drainage system, since the sewage in the drainage pipes contains certain solid and semi-solid impurities, it is easy to generate silt during the flow process, thereby reducing the water delivery capacity of the pipeline, and sometimes eve...

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Problems solved by technology

[0003] In the urban drainage system, because the sewage in the drainage pipes contains certain solid and semi-solid impurities, it is easy to generate silt during the flow process, thereby reducing the water delivery capacity of the pipeline, and sometimes even causing partial or complete blockage of the pipeline, thus As a result, conventional detection cannot be carried out. At this time, the sonar detector can be used to detect the blockage of the drainage pipe. However, the existing sonar detection equipment for defects in the pipeline is limited by the influence of the water flow velocity, especially for the large flow velocity. Scenes often don't work

[0004] Such as a drainage pipeline sonar detection device disclosed in patent document CN210739720U, and a kind of municipal water supply and drainage pipeline disease amphibious detection equipment disclosed in patent document CN210257887U. Operation

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