FISH-COLLECTING MANIFOLD Russian patent published in 2008 - IPC E02B8/08 

FIELD: hydraulic construction, particularly fish passes permitting fish passage through support structures to fish hatchery and growth areas.

SUBSTANCE: fish-collecting manifold comprises fish-accumulation path transversal to transit flow, swimming-in orifices distributed along fish-accumulation path and facing lower pool of hydrosystem. End part of fish-accumulation path is connected to fish pass inlet. Manifold comprises supply unit having inlet head connected to upper pool and outlet head communicated with fish pass interior. Inlet orifices of outlet head are closed with fish grid. Fish-collecting manifold is of bottom type and arranged in lower pool directly in area of lower search zone for fish. Fish-collecting manifold creates bottom extension in transversal section of fish-accumulation path. Lower pool bottom mark in front of swimming-in orifices of fish-accumulation path is below that of bottom projection base.

EFFECT: increased efficiency of fish attraction and concentration in fish-collecting manifold.

10 cl, 17 dwg