FIELD: hydraulic structure components, particularly to be used in water-intake structures.
SUBSTANCE: vortex fish-protective screen comprises cylindrical chamber with filtering walls provided with fish-diverting means and with water supply line tangentially connected thereto. Fish pass is communicated with chamber and is oppositely tangential to water supply line. Spiral partition length is installed inside the chamber upstream of fish-diverting means to create initial section of vortex channel. Vortex channel end passes into water supply line in flow direction thereof. Two opposite chamber walls are used as filtering walls of the chamber. The ends are made as screw single-turn surfaces with opposite pitches. Distance between the surfaces at fish-diverting means is equal to fish-diverting means throat width and exceeds said value by double screw pitch at water-supply means.
EFFECT: improved young fish protection while water intaking.
3 dwg
