Abstract
The study is dedicated to investigation of impact made by smooth coatings applied on the flow part surfaces of main line oil pumps with reference to energy efficiency performance of the said pumps. Loctite 7227 and Belzona 1341 were used as coatings which allowed to significantly reduce the roughness of the coated surfaces. Distinctive features of the abovementioned coatings are low cost and easy application (by spraying or using a brush) which is, despite lack of hydrophobic behavior, makes them applicable for use in operating conditions at oil pumping stations. Experimental studies have been carried out including coatings testing on full-scale pumps MOL 1250-60 and MOL 10000-210. The results of the experimental studies have been compared with the results of analytic calculations. Based on the results of the studies the applicability of smooth non-hydrophobic coatings was confirmed on condition of their application on the surfaces of volute flow parts of mainline oil pumps. Besides, the suggested analytical procedure for coatings efficiency evaluation was validated.
Highlights
There are 2121 main line and booster pumping units currently operated in Transneft system companies
It follows from the presented data that the increase in efficiency of the said pumps just for 1 % will save 140 mln kWh of electric energy annually which equals to 420 mln rub
That currently one of the advanced techniques for energy efficiency increase in centrifugal pumps is improving of centrifugal pump’s flow part surfaces quality by applying special purpose coatings which effectiveness could be increased by means of adding extra properties to the surfaces, for example, hydrophobic properties, resistance to corrosion and erosion impact made by pumped media etc
Summary
There are 2121 main line and booster pumping units currently operated in Transneft system companies. It follows from the presented data that the increase in efficiency of the said pumps just for 1 % will save 140 mln kWh of electric energy annually which equals to 420 mln rub. It is being said, that currently one of the advanced techniques for energy efficiency increase in centrifugal pumps is improving of centrifugal pump’s flow part surfaces quality by applying special purpose coatings which effectiveness could be increased by means of adding extra properties to the surfaces, for example, hydrophobic properties, resistance to corrosion and erosion impact made by pumped media etc.
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