What are the commonly used detection methods for municipal pipelines
The assessment of drainage pipeline status is based on the results of manual and other inspections in the early stage, to judge and evaluate the functional and structural status of the pipeline, determine the smoothness of the pipeline and the integrity of the structure, in order to provide guidance for subsequent pipeline repair and maintenance, and improve the efficiency of repair and maintenance work.
The underground pipeline leakage detection company reminds you that there are three main ways to detect drainage pipelines:
Pipeline periscope inspection
Rapid detection is achieved through a pipeline periscope, which uses an adjustable length handle to place a high magnification camera into the inspection well through other concealed spaces. The operator adjusts the lighting and lens focus on the ground through a controller for observation, and stores the inspection data in the form of video recording.
The pipeline periscope is equipped with a powerful light source, which can inspect and observe the internal conditions of pipelines with small filling and diameters of 200-1500. In ideal pipeline conditions, the detection depth can reach up to 80 meters. The high-definition camera can clearly display internal conditions such as pipeline cracks and blockages, judge structural defects of pipelines, and provide technical basis for pipeline maintenance and repair.
When conducting a rough survey of pipelines, pipeline periscope inspection (hereinafter referred to as QV) clearly has an advantage.
(1) Convenient connection;
(2) Easy to operate;
(3) Placing the camera into the inspection well provides a clear view of the situation inside the pipe;
(4) Compared to other instruments, it is lighter to carry. For a preliminary understanding of the situation inside the pipeline, QV is undoubtedly a better choice.
Underground pipeline leakage detection
Pipeline closed-circuit television inspection
Pipeline closed-circuit television detection, which is an endoscopic detection technology, mainly involves crawling inside the pipeline to understand its specific condition. Its obvious advantages are reflected in the fact that we can use the lens of the crawler to have a clear understanding of the situation inside the pipeline during inspection. There is no problem with the pipeline, and the crawler can carefully identify the problem with the lens when it reaches the defect.
The purpose of pipeline closed-circuit television detection is different, generally divided into rapid detection and detailed detection. The corresponding equipment is a fast periscope detection system and a pipeline closed-circuit television detection endoscopic detection system. The information usually obtained during the inspection process includes internal image data of the pipeline, the length of the inspected pipeline, the distance of the defect location, and the slope of the pipeline.
In addition to providing video recordings, the testing project will also provide professional evaluation reports within the industry, which comprehensively evaluate the material, connection method, external geology, pipeline foundation condition, as well as burial time, groundwater level height, temperature, dynamic and static loads, and many other factors of the pipeline itself. This will help customers understand the current status and future conditions of the underground pipeline. And it can conduct on-site measurements of pipeline slope, geographic information, and other data according to customer needs.
Pipeline sonar detection
Sonar detection is mainly used to solve the problems of detecting the amount of silt and deformation of soft pipelines when the water level inside the pipeline is high. The sonar probe is moved inside the pipeline by the traction rope to measure the amount of sedimentation in the pipeline, which has a significant effect on the statistical analysis of the expected amount of sedimentation inside the pipeline and before pipeline dredging.
