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UDC 621.644

Orlov V. А., Zotkin S. P.

Energy conservation in applying protection coatings by trenchless technologies

Summary

The analysis of trenchless technologies and different types of inner protection pipe coatings for ensuring the energy conservation effect during water transportation is presented. Circular pipes and pipes with deformed shape profile, fusion-bonded linings based on inorganic and organic materials are considered as protective coatings. Possible achievement of energy conservation in applying protective coatings by trenchless technologies of renovating water pressure pipelines on the basis of running meter of the pipeline length per year was studied. On the basis of the designed computer-aided program a comprehensive evaluation of energy efficient Swagelining technology that involved pulling new preliminary thermomechanically contracted polymer pipes through the old pipeline was carried out. The computer-aided program for calculating the operation parameters of a pressure pipeline subject to rehabilitation with preliminary contracted polymer pipes allows the designers of making efficient and prompt decisions by event simulation and the use of a wide range of polymer pipes of the relative diameter and SDR value (ratio of the diameter to the pipe wall thickness).

Key words

power saving , pipeline , trenchless technology , renovation , protective coating , hydraulic characteristic

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