Sewerage pipes are located underground at the level of the foundation of a residential building. Despite the large diameter and the presence of technical hatches, they have slopes, turns, branches. Therefore, it is impossible to carry out a visual inspection of the inside of the pipes in case of accidents, and digging to determine the place of leakage is laborious. To determine the cause of the malfunction by a non-destructive method, a video pipe diagnostic device is used. The video camera, connected with a flexible cable to the monitor, shows the sewer pipe from the inside. This allows you to quickly establish the location of the defective area, the nature of the damage or blockage. The information obtained is necessary to make a decision on how to fix the problem. Prices for teleinspection of pipes and equipment in the regions of Russia differ insignificantly.
Application area
Teleinspection is designed to monitor the state of pipeline systems in emergency situations and for preventive purposes.
Video inspection of the pipe during the accident allows you to quickly identify and localize for repair:
- cracks;
- breaks;
- displacement of joints;
- destruction or deformation of the upper arch;
- foreign objects (rags, construction waste, etc.);
- organic deposits on the walls, reducing the inner diameter.
Video diagnostics of sewer systems outside emergency situations can be used in the following cases:
- assessment of the quality of the work done for the construction or repair of the sewerage system;
- identification at an early stage of pipeline defects that can lead to an accident in the future (cracks, pipe mismatches);
- identification of unauthorized inserts;
- search for forgotten sewer wells;
- search for items that accidentally fell into the sewer;
- establishing the causes of regular blockages in some place of the sewage system;
- restoration of the lost plan-scheme.
Regular preventive video filming of the inside of the sewer will help prevent major accidents and repair costs.
Types of teleinspection systems
Pushed - the camera is fixed at the end of a rigid cable, which the operator forcibly moves along the pipe to the object that has caused a decrease in the throughput of the pipeline.
- Handheld endoscope: a 23 mm diameter camera with 6-12 LEDs is located at the end of a flexible telescopic rod, inside of which is a cable for transferring the image to the screen located on the handle. Advantage - the ability to inspect pipes with a diameter of 25 mm; lightness, compactness. The disadvantage is the small depth of penetration of the video camera into the pipe or cable channel. The standard boom length is 3.6 m, with additional parts it can only be extended to a maximum of 8.6 m.
- Portable portable sewer pipe teleinspection system. Equipped with a monitor, a recording unit with memory up to 256 GB, a set of flexible durable cables over 100 meters in length, video cameras of 17, 23 and 28 millimeters; 12 LEDs. Equipped with a suitcase or box for carrying equipment.
Self-propelled device - camera, lighting and power supplies are attached to a mobile platform, controlled remotely. The advantage is mobility, the length of the connecting cable is up to 500 meters.Disadvantage - used for large diameter pipes: from 150 to 2000 mm.
The equipment, invented for the maintenance of centralized and private sewerage systems, is also suitable for inspecting water pipes, heating networks, gas pipelines and wells.
Teleinspection
Video monitoring of large-diameter pipes is carried out with full-size professional equipment that allows you to inspect hard-to-reach places with a depth of up to 60 meters. The cable is rewound.
To monitor the internal state of the pipeline, a high-resolution color video camera with a light source (light-emitting diodes) is introduced into it. The camera under the control of the operator can rotate, change the angle of view, increase the illumination, zoom in on the image, transmit it from the inside of the pipe to the screen of the device located on the surface.
When defects are detected by a distance counter or using a radio beacon and a locator, the exact location of the object is fixed. The record is used to more accurately diagnose the problem later.
Advantages and disadvantages
Remote localization of the source of the accident allows repairing the pipeline without dismantling or digging trenches, which significantly reduces the cost and shortens the repair time.
The only drawback is the significant price of the diagnostic complex itself, especially the robotic one.
The cost of the teleinspection service depends on the length of the pipes being inspected. In the regions, the price ranges from 50 to 200 rubles. per 1 m of the tested system.
