Sonar detection method for water drainage pipeline

Abstract

The invention discloses a sonar detection method for a water drainage pipeline. The sonar detection method comprises the following steps: S1, getting ready for detection; S2, equipping detection equipment; S3, carrying out sonar detection; and S4, processing data. The sonar detection method has the advantage that detection can be carried out in the water drainage pipeline with certain depth of water, so that the problems that a conventional detection method is unsafe for a detector and is inaccurate to judge functional defects are avoided; moreover, original screening fixed precision is improved to 800 points per circle from 400 points per circle; and an angle that a step motor rotates every time is reduced, so that emitting and receiving times are increased, and therefore, quantity of sampling points is increased, and precision is improved.

Description

technical field [0001] The invention relates to the field of sonar detection methods for drainage pipes, in particular to a sonar detection method for drainage pipes. Background technique [0002] In the development in recent years, through the introduction of foreign countries, there have been many ultrasonic testing equipment for drainage pipes when there is water, mainly focusing on the introduction and absorption of ultrasonic testing equipment. This type of ultrasonic equipment can use the water body as the medium for ultrasonic transmission in the water drainage pipeline, receive the returned ultrasonic signal for analysis, and finally draw a simulated cross-sectional view of the drainage pipeline to show the location and depth of the internal defects of the drainage pipeline. [0003] When dredging and repairing underground pipelines such as municipal drainage underground drainage pipelines, agricultural water underground drainage pipelines, industrial water undergrou...

AI Technical Summary

Problems solved by technology

Water plugging, water stoppage and other means not only increase the workload and working time of the inspection, but also affect the normal production work

Under such conditions, there are many limitations to using the drainage pipe robot to carry the camera device into the drainage pipe for inspection.

However, the traditional detection methods for the deposition and damage inside the pipeline generally use direct visual inspection, divers to probe or use some simple tools such as bamboo chips for inspection, which has many disadvantages such as personal safety, difficulty in finding the deposition situation, and inaccurate judgment.

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