FISH BARRIER OF WATER-INTAKE WORKS Russian patent published in 1995 - IPC

FIELD: protection of young fish against getting into water-intake works. SUBSTANCE: water flowing along water duct 2 through sectional netted screen 1 is cleaned of litter and young fish and enters water intake 6. In case of heavy concentration of young fish in the water duct the operators activate sections 5 with a minimum size of mesh. On changes in the ichthyological situation, for example, in absence or at minimum concentration of young fish the previously idle large-mesh sections are opened and brought to working position while small-mesh ones are folded and oriented along the stream. EFFECT: improved design. 4 dwg