| 摘要 |
FIELD: hydraulic engineering. ^ SUBSTANCE: invention relates to facilities designed to prevent getting of young fish into diversion. Proposed fish protective facility includes fish-retaining shield formed in waterway, perforated air conduits found on bottom of waterway directly before fish -retaining shield and connected with compressed air source, system of forced diversion of young fish in form of pressure pipeline submerged under water level and furnished with ejectors arranged along its length, ejectors being connected with pressure line of pump, trash-and-fish trough found in upper part of shield parallel to perforated air conduits and pressure pipeline connected with fish diversion device, vertical boom submerged under water level and fish intake holes. Moreover, device is furnished with additional trash-and-fish trough communicating with fish diversion device installed parallel to main trash-and-fish trough before the trough with free space formed between troughs. Pressure pipeline of young fish forced diversion system is located in surface level of free space and in middle between additional and main trash-and-fish troughs. Ejectors are made on outer surface of pressure pipeline in two rows with displacement of ejectors of first row relative row relative to ejectors of second row and are arranged square to its longitudinal axis at acute angle relative to edges of trash-and-fish trough. Outlet holes of ejectors of first row are pointed to additional trash-and-fish trough, and outlet holes of ejectors of second row are pointed to main trash-and-fish trough. Outer and inner edges of additional and main trash-and-fish troughs are non-flooded. Fish intake holes are located at base of ejectors at side opposite to outlet holes. ^ EFFECT: simplified design of fish protective facility, improved efficiency of directing of young fish into fish diversion device by creating conditions for forced diversion of young fish. ^ 10 cl, 16 dwg |
