Is a hydromechanical device custom-designed according to the problems and characteristics of the specific pipeline.
It's able to remove the hardest calcium and salt compounds deposits clogging the pipe free flow area by more than 70%.
Generally a single run-through is required for the complete descaling and cleaning of the pipeline; however in some cases more runs are needed (gradual incrustation removal) depending on the pipeline state and slurry recovery systems.
Our cleaning device is automatically propelled by the pipeline fluid itself, without any hose, cable or power connection, enabling the device to restore many kilometers in a single continuous operation.
During cleaning, the propelling fluid flows through the device at a higher speed than the device itself, transporting the removed debris ahead of the tool (in suspension with the fluid). Therefore the line never runs the risk of being shut down or plugged due to debris accumulation.
Our device is easily locatable because equipped with a special radio transmitter that pinpoints the rate of advance and points the progress of the device at all times.
Our hydromechanical device is easy to insert into the pipeline via various available entry points if launcher and receiving trap barrels are not present in the line, ensuring minimum interruption to the normal pipeline operation.
The device works with a fluid velocity ranging between 0.8 to 1.5 m/s. Part of the deriving fluid pressure is used by the device to self propel and clean while the remaining pressure is employed to transport the suspended debris at a higher speed.
The pipeline layout generally sets no limits since Idromec system is designed for vertical elevations, for 90° turns with bend radius up to 1.5 of the nominal pipe diameter, for any pipe material and length. However, the internal nominal diameter must be constant and not smaller than 70 mm (while it could be even larger than 2000 mm).
GAUGING EACH CLEANING OPERATION
WITH THE IDROMEC SYSTEM ACCORDING TO THE PIPELINE PROBLEMS AND THE AIMS TO PURSUE
- Giving the option to choose between the following:
either keeping a fine film of hard deposits on the internal pipeline surface or totally cleaning the pipe wall surface (even to bare metal). In fact, in some cases a complete pipe cleaning may cause a restart of corrosion.
- Finishing the inner pipe surface according to the pipeline operation condition that is according to the Reynolds value and pipeline length.
- Removing very hard iron and calcium compounds from the pipe wall pits (due to pitting corrosion), using a system of hydraulic high pressure jets applied on the device.
- Removing in a hydrocarbon pipeline the water deposited on the pipe bottom to prevent pitting or channel corrosion.
- Keeping in a hydrocarbon pipeline a thin film of wax around the inner pipe wall to prevent corrosion.
- Performing cleaning operations in pipelines with unknown layout using cleaning devices with highly adaptable overall dimensions. In this case we also recommend to perform precautionary tests with foan or calibrated pigs to determine the minimum pipeline diameter.
The primary task is to pulverize and remove the incrustations from the inner pipeline surface. The cleaning section is made up of a variety of interchangeable tools specified according to the type of pipe and intervention.
It consists of two heads of steel V-shaped blades and of a series of special brushes. The blades provide full coverage of the inner circumference of the pipe wall and are mechanically sharpened and designed to work without gauging or scraping. Through an adjusting spring system applied on each head, it is possible to adjust the blades stiffness and consequently the adherence pressure around the pipe surface. The overall length of the cleaning heads are designed according to the minimum pipeline curvature radius and are hinged together with special universal joints (to provide high adaptability to the pipeline layout and great mechanical performances). The arrangement also allows the pipe to retain, if desired, its natural lining or any lining that has been applied to the pipe. In fact, the final cleaning action is caused by a very fine layer of water forced between the blades cutting edges and the inner pipe surface causing the blades to hydroplane rather than cut into or even touch the surface of the pipe.
Hydraulic propulsion section:
It is made up of a set of membranes which alternatively regulates the propelling liquid flow-rate creating an hydraulic jack-hammer effort that propels the device in an impulsive way and at the same time allows the fluid to pass through it and to flush loosened deposits ahead of the device in a suspended form.
The jack-hammer action allows the pulverization and removal of the hardest deposits while the high flushing of propelling fluid avoids any debris accumulation ahead of it. However, in case of debris accumulation, the forward motion of the cleaning device is automatically slowed, allowing more flushing fluid to run through the device speeding up the debris flow. In addition the sucking action caused by the differential pressure created by the vibrating propulsion means that the propelling fluid immediately following the device is as clean as the fluid being pumped into the pipeline from the source. Unlike other cleaning systems, with this technology it is possible to restore miles and miles of pipeline at a cleaning speed ranging between 0.6 and 1 m/s without any interruption of the line even in extreme working conditions (over 70% clogging of the pipe free-flow area).
Allows the localization of the device at all times through the housing of a special radio transmitter.
FURTHER CONSTRUCTION DATA:
Each cleaning device is designed, dimensioned and manufactured with appropriate materials able to withstand the work environmental conditions and stress.
The number of sections and universal joints is determined according to pipeline characteristics and cleaning requirements.
The device adaptability rate (reducing the device diameter) is determined by the minimum diameter of the line and must not exceed 30% less of the inner nominal diameter of the pipe.
The radial stiffness of the cleaning section is adjustable through spring-damper systems.
Before use, each device is assembled, gauged and tested.
Our cleaning devices are manufactured according to UNI EN ISO 9000 standard.