Cavitation protection coatings for hydroelectric power installations
Hardly any form of modern energy production has a greater "green potential". Water as the sole driving force on one hand. Unfortunately on the other a motor of permanent wear and tear - CAVITATION! Almost all Kaplan and Francis turbines suffer more or less due to the variant hydraulic pressure conditions. Debris, sediment, vibration and the enormous water impact add to the difficulties. Conventional polymeric repair technologies, such as epoxy-ceramic, have proven in many cases as technically inadequate to withstand the enormous loads.
We have a solution for problems with cavitation on hydroelectric power plants by means of coatings! Scope of application: Francis impellers Kaplan impellers Penstocks Guide vanes Nozzle hoods Wicket gates Head covers Draft tubes Spiral casings MetaLine - Technical solutions in detail METALINE SERIES 700 MetaLine Series 700 coatings have much smoother surface structures in comparison with brush or trowel applied conventional epoxy / ceramic coatings. Hydro-dynamic flow conditions are positively influenced. The homogenous, elastic material structure is vibration-resistant and helps to compensate the continual variances in tension and pressure influences that occur due to cavitation. Damage caused by foreign matter and waste introduction is greatly reduced due to the material's erosion-resistant characteristics.
MetaLine Series 700 – MetaLine Series 700 coatings have much smoother surface structures compared to epoxy coatings. The hydro-dynamic flow conditions are positively influenced by the rubber-like sprayed coating. The homogenous, elastic material structure is vibration-resistant and helps compensate for the continual variances in tension and pressure loads under cavitation. The damage from impact and debris infiltration is extremely inhibited via the massive energy absorbing physical properties. Pelton turbine runners are unsuitable for this elastomeric process, due to their extremely high operational pressure situation.
MetaLine Series 700 coatings have much smoother surface structures compared to epoxy coatings. The hydro-dynamic flow conditions are positively influenced by the rubber-like sprayed coating. The homogenous, elastic material structure is vibration-resistant and helps compensate for the continual variances in tension and pressure loads under cavitation. The damage from impact and debris infiltration is extremely inhibited via the massive energy absorbing physical properties. Pelton turbine runners are unsuitable for this elastomeric process, due to their extremely high operational pressure situation.
