Profylmetry

If necessary (optionally), profilers can be equipped with a navigation module.

Signal processing of the navigation module, if equipped with a profiler, allows you to identify and classify bends (deviations of the pipeline axis from the forward direction) and calculate the geodetic coordinates of all detected defects and structural elements of the pipeline.

We carry out profilemetry of pipelines with diameters from 219mm (8 ") to 1420mm (56").

Profilers (PRT)

Tasks

PRT are designed to measure the profile of the inner surface and determine the position of the axis of the main pipeline.

The principle of the profiler is based on restoring the shape of the inner cross section of the pipe according to the lever measuring system. The section is restored by registering the angular position of the levers covering 100% of the inner circumference of the pipe. The determination of the position of the axis of the pipeline is carried out using data from an inertial navigation system.

Features of the route revealed by the profiler and distortions in the shape of the pipeline surface:

- Features of the position of the pipeline

• bends (turns)

• radii of curvature

• rotation angles

- Distortion of the cross-sectional shape

• ovality

• dents

• corrugations

- Structural elements

• ring welds

• cranes

• tees

• taps

• changes in inner diameter

Operational characteristics

Minimum radius of rotation of the pipeline:

1.5 outer diameter of the pipeline

Minimum Passable Diameter:

0.7 outer diameter of the pipeline

Range of working speeds:

0.5 - 4.0 m / s

Optimum Speed:

2.0 - 3.0 m / s

Maximum medium pressure:

12 MPa