FISH PROTECTION STRUCTURE "ZAPAN" Russian patent published in 2016 - IPC E02B8/08 

FIELD: construction; fishing and fish farming.

SUBSTANCE: invention relates to hydrotechnical structures and can be used to prevent ingress of young fish in water intake structures. Fish protection structure includes fish deflecting tray, fish lifting jump, installed at an angle of lift, trap boom with flange and fish catching openings arranged between fish deflecting tray and fish lifting jump. Structure has bottom dividing flow fish catching head made in form of truncated pyramid, one side of which has angle of 30° to flow axis. Fish lifting jump is made in form of pipe with branch pipes for feeding compressed air into it and installed between fish catching head and trap boom. At that, trap boom with flange is equipped with fish catching openings formed by fish catching blades made in form of arc with rounded angle of 12-13° and installed at angle of 45° to axis of flange.

EFFECT: higher efficiency of young fish protection against damage and ingress into water intake structures.

1 cl, 3 dwg