scholarly journals DEVELOPMENT OF A FICH PROTECTION DEVICE DESIGN

2021 ◽  
pp. 68-72
Author(s):  
A. Zabrodin ◽  
Yu. Bagaiskov
Keyword(s):  
Water Intake ◽  
Protection Device ◽  
Young Fish ◽  
Flow Forming ◽  
Hydraulic Flow ◽  
Type Device ◽  
Protection Devices ◽  
Reliability Of Operation ◽  
Intake Structure ◽  
Fish Protection

The water intake structure is a functional element of the water supply system, but it must also be a fish protection object. The following basic requirements are imposed on the devices of modern fish protection devices at water intakes: prevention of ingress and death of young fish and larvae, prevention of injury to young fish and larvae, removal of protected fish from water intake, reliability of operation under specific conditions and means. According to the principle of operation, the most effective is the active scheme, with the forced formation of the hydraulic flow structure. The design of a universal combined type device with the use of a jet generator as a flow-forming element that creates a reactive hydraulic movement designed to protect fish and juveniles with a body size of less than 15 mm is proposed.

Hydraulic Method and a Device of Fish Protection at Water-Intake from the Mountain Rivers

2014 ◽  
Vol 641-642 ◽  
pp. 353-358 ◽  
Author(s):  
Nikolai Vatin ◽  
Nikolai Lavrov ◽  
Nikolai Korzhavin
Keyword(s):  
Experimental Data ◽  
Water Flow ◽  
Water Intake ◽  
Protection Device ◽  
Young Fish ◽  
Mountain Rivers ◽  
Hydraulic Method ◽  
The Impact ◽  
Geometrical Dimensions ◽  
Fish Protection

In given article the arrangement of fish protection on water intakes is observed. Fish protection device in the form of variable width visor, arranged on the crest of sediment protection threshold is offered. In the article the geometrical dimensions of the fish protection device are substantiated, the distribution of water flow along it is studied, the capacity and the impact of the device on specimens of young fish is determined. The experimental data and their analysis with the subsequent conclusions are given.

scholarly journals Investigating the effectiveness of a fish-protection structure of the reclamation water intake

2020 ◽  
Vol 210 ◽  
pp. 07008
Author(s):  
Svetlana Dragunova ◽  
Evgeny Kuznetsov ◽  
Anna Khadzhidi ◽  
Alexander Koltsov ◽  
Noureldin Sharaby
Keyword(s):  
Water Intake ◽  
Juvenile Fish ◽  
Swimming Ability ◽  
Protection Device ◽  
Laboratory Studies ◽  
Young Fish ◽  
Water Stream ◽  
Protection Effect ◽  
Fish Protection

The study was conducted at the reclamation water intake facility of Tikhovsky hydroelectric complex. We used data from long-term observations and results of laboratory studies on a 1:20 scale physical model of the Zapan fish protection device. The effectiveness of the model was evaluated using simulators of juvenile fish. Increasing the efficiency of the Zapan fish protection facility is achieved by additional placement in the bottom threshold, which directs the bottom flow along with the young fish to the springboard, where there is an airlift in the form of a bubble curtain that lifts the young along the springboard into the fish-receiving holes of permeable shields. Fish protection design and location in the middle of the water stream do not create a backwater due to low resistance and provide protection for young fish. This increases not only the survival rate of young fish, but also the efficiency of reclamation water intakes. A new design of a fish protection structure for reclamation water intakes of the Zapan type was developed, which provides a fish protection effect of 3 groups of young fish formed by their swimming ability, which allowed determining the size of the elements of the fish protection structure.

scholarly journals Increase fish protective efficiency constructions of meliorative water intake

2020 ◽  
pp. 69-73
Author(s):  
Svetlana Mikhailovna Dragunova ◽  
Yevgeniy Vladimirovich, Кuznetsov ◽  
Anna Yevgenievna Khadzhidi
Keyword(s):  
Physical Model ◽  
Water Intake ◽  
Flow Rate ◽  
Juvenile Fish ◽  
Protective Efficiency ◽  
Irrigation Systems ◽  
Relative Flow Rate ◽  
Reclamation System ◽  
Relative Flow ◽  
Fish Protection

The article solves the problem of increasing the level of protection of juvenile fish to a standard indicator by the modernization of individual elements of fish protection of ameliorative water intake of irrigation systems. The design of an integrated fish-protecting structure with a logging boom adapted to hydrology and the rhythm of migration of juvenile fish from irrigation sources has been proposed. The results of studies on a physical model, taking into account the costs of the reclamation system, show an increase in the efficiency of the combined fish protection structure with a harbor for reclamation water intakes in the range of 78,5–84,0 %, depending on the relative flow rate on the shelf of the sanctuary.

Closure to “Perforated-Pipe Water Intake for Fish Protection”

1977 ◽  
Vol 103 (6) ◽  
pp. 666-667
Author(s):  
Richard T. Richards ◽  
Mark J. Hroncich
Keyword(s):  
Water Intake ◽  
Pipe Water ◽  
Perforated Pipe ◽  
Fish Protection

scholarly journals Experimental Study of Submerged Vanes in Intakes under Sediment Feeding Conditions

2018 ◽  
Vol 40 ◽  
pp. 03016
Author(s):  
Aslı Bor Türkben
Keyword(s):  
Water Intake ◽  
River Flow ◽  
Flow Direction ◽  
Main Channel ◽  
Bed Topography ◽  
Before And After ◽  
Submerged Vane ◽  
Solid Discharge ◽  
Submerged Vanes ◽  
Intake Structure

Sediment is transported along the river flow and deposited in the mouth of the intake structure over time and reducing the water intake capacity. Nowadays, many water intake structures lose their function and are closed to operation. To deal with this problem, recently, submerged vane application has offered a practical and economical solution. The aim of this study was to evaluate the efficiency of three vane installations under sediment feeding conditions by comparing the bed topography before and after vanes were installed. For that purpose, experiments were carried out in a laboratory channel running for 90-degree intake angle. Three vanes were installed in one column at near the intake entrance. The vanes dimensions were equal to; 3cm height, 12cm long, 10 mm thick, and aligned with α = 20° angle to flow direction. The tests were run until equilibrium was reached, i.e. when the outgoing solid discharge was equal or larger than 90% of the incoming. Once the bed topography remained stable, bed and water level surfaces were measured. tests were carried out by feeding sediment from upstream of the main channel.

Volumetric Hydraulic Baffle: New-Generation Contactless Fish Protection Device

2005 ◽  
Vol 39 (5) ◽  
pp. 253-256
Author(s):  
A. V. Ivanov ◽  
G. G. Filippov ◽  
A. L. Ersler ◽  
K. V. Ilyushin
Keyword(s):  
Protection Device ◽  
New Generation ◽  
Fish Protection
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