RU2009116027A - METHOD FOR REGULATING FISH PASS THROUGH HYDRAULIC - Google Patents

Abstract

 1. The method of regulating the passage of fish through the hydroelectric unit, which consists in the formation in the fish passage, equipped with dividing walls with inlet openings, of a controlled water stream using water jets flowing out from the jet-forming nozzles framing the inlet openings, characterized in that the high-speed flow of water through the fish passage the path is regulated by the intensity of the water jets by changing their number n. ! 2. The method according to claim 1, characterized in that the required number n of water jets directed towards the transit stream, at an initial velocity V0 of their outflow from the jet-forming nozzles, which are received no more than 10 m / s from the condition of ensuring the safety of migrants, is determined by the following addictions! ! where n is the required number of water jets in a row; ! g - acceleration of gravity (m / s2); ! H is the pressure on the hydraulic unit (m); ! hЭ - distance between the planes of distribution of water jets (m); ! be - the distance between the axes of the water jets (m); ! d0n is the diameter of the jet-forming nozzles (m); ! φ is the speed coefficient determined empirically (m / s). ! 3. The method according to claim 1, characterized in that the initial velocity V0 of the outflow of water jets from the jet-forming nozzles directed towards the transit stream is varied from 0 to 10 m / s and is determined from the following dependence! ! where V0 is the initial velocity of the expiration of water jets (m / s); ! g - acceleration of gravity (m / s2); ! H is the pressure on the hydraulic unit (m); ! hЭ is the distance between the planes of distribution of water jets (m); ! be - the distance between the axes of the water (m); ! φ ′ is the dimensionless coefficient determined by the experimental test�

Claims (5)

1. The method of regulating the passage of fish through the hydroelectric unit, which consists in the formation in the fish passage, equipped with dividing walls with inlet openings, of a controlled water stream using water jets flowing out from the jet-forming nozzles framing the inlet openings, characterized in that the high-speed flow of water through the fish passage the path is regulated by the intensity of the water jets by changing their number n. 2. The method according to claim 1, characterized in that the required number n of water jets directed towards the transit stream, at an initial velocity V _{0 of} their outflow from the jet-forming nozzles, which are received no more than 10 m / s from the condition of ensuring the safety of migrants, is determined by next dependency

, where n is the required number of water jets in a row; g is the acceleration of gravity (m / s ² ); H is the pressure on the hydraulic unit (m); h _E - the distance between the planes of distribution of water jets (m); b _e - the distance between the axes of the water jets (m); d _0n is the diameter of the jet-forming nozzles (m); φ is the speed coefficient determined empirically (m / s). 3. The method according to claim 1, characterized in that the initial velocity V _{0 of the} outflow of water jets from the jet-forming nozzles directed towards the transit stream is varied from 0 to 10 m / s and is determined from the following relationship , where V ₀ - the initial velocity of the expiration of water jets (m / s); g is the acceleration of gravity (m / s ² ); H is the pressure on the hydraulic unit (m); h _E - the distance between the planes of distribution of water jets (m); b _e - the distance between the axes of the water (m); φ ′ is the dimensionless coefficient determined experimentally; n is the number of water jets in a row; d _0n is the diameter of the jet-forming nozzles (m). 4. The method according to claim 4, characterized in that the initial velocity V _{0 of the} outflow of water jets from the jet-forming nozzles directed towards the transit stream and placed in the transit gallery, which excludes the contact of migrants with high-speed dangerous sections of the water jets, is varied from 10 m / s to 30 m / s and is determined by the formula V ₀ = 10k (m / s), and the coefficient of increase k of the initial flow velocity V _{0 of the} water jets from the jet-forming nozzles is determined from the following relationship

, where k is the dimensionless coefficient of increase in the initial velocity of the outflow of water jets from nozzles; g is the acceleration of gravity (m / s ² ); H is the pressure on the hydraulic unit (m); h _E - the distance between the planes of distribution of water jets (m); b _e - the distance between the axes of the water jets in a row (m); φ is the speed coefficient determined empirically (m / s); n is the number of water jets in a row; d _0n is the diameter of the jet-forming nozzles (m). 5. The method according to claim 1, characterized in that it is necessary for the formation of an optimal attracting stream, the initial velocity of the flow of water jets from the jet-forming nozzles directed along the flow of the transit stream, is determined from the following relationship

, where V ₀ - the required initial velocity of the flow of water jets from the jet-forming nozzles for the formation of the optimal attracting flow (m / s); φ ”is the dimensionless coefficient determined experimentally; h _E - the distance between the planes of distribution of water jets (m); b _e - the distance between the axes of the water jets (m); V _PRIV.C. - the value of the optimal average velocity of the attracting stream at the entrance to the inlet hole (m / s); d _0n is the diameter of the jet-forming nozzles (m); n is the number of water jets in a row.