Method and device for yang fish protection against entry into water intake structure

FIELD: hydraulic structures, particularly fish-passing devices included in water intake structures.

SUBSTANCE: method is based on young fish's tendency to follow moving objects. Method involves forming water permeable screen including flexible elastic members and extending for the full stream depth; providing means for flexible members displacement and installation in working position; providing preliminary young fish concentration in previously created artificial water-plants and transferring young fish into fish-passing channel. Water permeable screen is formed of flexible elastic members on level of stream carrying young fish with maximal concentration. Screen is created in horizontal plane, wherein flexible elastic members are reciprocated from one bank to another along with directing young fish concentrated inside screen in fish-passing channel. Flexible elastic members imitate natural water flora, which is native fish habitat.

EFFECT: provision of controllable water intake during change in vertical young fish descent dynamics.

27 cl, 21 dwg

 

The invention relates to hydraulic construction, and in particular to methods and structures designed to protect juvenile fish from entering the intake.

Known way to protect juvenile fish from entering the intake structure [1], including the formation of rabotepugacheva screen formed of flexible elastic tubes installed at the bottom of the inlet channel, creating intense hydrodynamic field width and the depth of the channel by feeding pressure fluid into the flexible pipe and the subsequent diversion of juveniles and trash in rebooted.

The disadvantage of this method is low efficiency mode control water and low efficiency of protection of juvenile fish.

Known way to protect juvenile fish from entering the intake structure [2], including the formation of fish screen formed from cylindrical brushes mounted on horizontal guides to the width and depth of the inlet channel, and the subsequent diversion of juveniles and trash in rebooted by rotation of the brushes in the direction of arrangement of rebooted.

The disadvantage of this method is the complexity of the equipment for removal of juvenile fish, and low efficiency of protection of juvenile fish.

The closest technological scheme and to thememo positive effect is the way to protect juvenile fish from entering the intake structure [3], consisting in the creation of a permeable screen, the depth of the stream, made of flexible elastic elements, the inclusion of means for moving and installation of flexible elements in working condition, pre-concentration of juvenile fish in artificial algae and subsequent transportation of juvenile fish in rebooted.

The disadvantage of this method is the low degree of control over the assignment of modes of water in the changing dynamics of the vertical slope of juvenile fish.

It is known device [4], including installed across the inlet channel repositoryname screen formed branched structures with weights and floats for normal installations in relation to the stream.

The disadvantage of this device is the low efficiency of the protection and diversion of juvenile fish from the zone of influence of the water front.

The closest in technical essence and the achieved result is the protection device [3], which includes guides, tiered located in depth, across the stream and repositoryname screen, made in the form of a flexible elastic elements attached to the transverse rails, a drive for moving the flexible element and rebooted.

The disadvantage of this protection device is the low efficiency is the ability of the control mode of the water when changing dynamics of vertical slope fish fry.

The aim of the invention is to create an efficient environment, enabling the possibility to control water at the changing dynamics of the vertical slope of juvenile fish.

The invention consists in the following.

According to claim 1 of the claims. Forming a permeable screen in the horizontal plane of the flexible elastic elements in the horizons of the stream with the maximum concentration of juvenile fish, and the elastic elements are in constant reciprocating movement allows you to move juvenile fish in this horizon in rebooted placed at the right and left banks of the inlet channel. An eco-friendly way and based on the reaction of juvenile fish seeking to follow a moving subject (optomotry reaction). In addition, as repositoriesuses screen uses flexible elastic elements, simulating aquatic vegetation, in which juvenile fish are accustomed to dwell in.

According to claim 2. Running guides in the form of elastic tapes with a width equal to the width of the inlet of rebooted, and can move in the horizontal plane, allows you to move repositoryname screen formed of flexible elastic elements attached to an elastic tapes on both sides. At the same time with a pen is the displacement of the screen moves (translates) the juvenile fish, inside the screen, to the right or left rebooted made opposite end sides of the elastic tape.

According to claim 3 claims. The implementation of flexible elastic elements located above the rails, from a material with a specific gravity less than the specific weight of water, can be installed in operating position. Similarly, the implementation of flexible elastic elements located below the rails, from a material with a specific gravity of greater specific weight of water, also allows you to set flexible elements in working condition.

According to claim 4 claims. Supply rebooted individual gates and execution of the input holes rebooted tiered allows you to create standalone rebooted, allowing you to take juvenile fish in individual horizons of the stream.

According to claim 5 claims. Execution repositoriesuses screen with a through transverse channels located inside of the screen (Fig), allows juvenile fish, feel the feeling of free flow, to move in the direction of rebooted. In addition, in the transverse channels has a transit period due to the effect of the suction flow rebooted.

6 claims. Performing cross through channels on the one hand repositoriesuses screen allows you to create conditions for further divert juveniles of R. what would rebooted.

On 7 and 8 claims. Performing cross through channels on the upper or lower side repositoriesuses screen also contributes to the effectiveness of the diversion of juvenile fish in rebooted.

According to claim 9 claims. Perform transverse through-channels on both sides repositoriesuses screen increases the efficiency of removal of juvenile fish twice.

In paragraph 10 of the claims. Execution repositoriesuses screen with local areas, free from installation flexible elastic elements, allows you to generate “traps” for juvenile fish that are caught in them, has the ability to linger, and at this time, when moving the screen in the direction of rebooted, juvenile fish, concentrated in the “traps”, is given in rebooted.

In paragraph 11 of the claims. Execution sites, free installation flexible elastic elements, on the one hand repositoriesuses screen is a variation of the layout of RSU.

On p.12 of the claims. Execution sites, free installation flexible elastic elements, with both sides repositoriesuses screen allows you to improve the efficiency of the concentration of juvenile fish inside of the screen and tap it into rebooted.

On item 13 of the claims. Performing local sites-free installation flexible elastic elements in staggered order of the ke relative to the surface repositoriesuses screen increases the likelihood of juvenile fish in the generated “traps”.

On 14 claims. Execution sites, free installation flexible elastic elements placed on both sides repositoriesuses of the screen, facing each other, allows juvenile fish to move freely (in the case of the perforated surface of elastic tapes) from the same horizon of the screen to another. In the case of a non-perforated surface elastic tapes this option allows you to increase the power of the traps.

According to § 15 of the claims. The offset of the local areas relative to each other allows to increase the likelihood of juvenile fish in them.

On PP and 17 of the claims. Execution of local areas in square or rectangular form is a variant of the layout of traps.

On p claims. The reduction step, the installation of flexible elastic elements on the width of the elastic tape (the guide) in the direction of the intake channel allows you to enhance the inhibiting function of the screen, i.e. the frequency of installation of flexible elastic element causes the retention of juvenile fish inside of the screen and therefore guarantees its phased withdrawal to rebooted (Fig).

On p.19 of the claims. The implementation of flexible elastic elements in the form of a flat ribbon allows you to improve the overall hydraulic resistance created by repositorium the screen, and accordingly increasing the ing the effectiveness of the protection of juvenile fish and discharge it into rebooted (Fig).

In paragraph 20 of the claims. The implementation of flexible elastic elements in the form of bundles with cross branches allows more imitate aquatic vegetation, which, ultimately, increases the efficiency impact repositoriesuses screen to protect juvenile fish (Fig and 18).

In item 21 of the claims. Execution of the transverse branches of different lengths allows to form a more dense screen at its height.

According to article 22 of the claims. Execution of the transverse branches of the same length is a variation of the layout of the wiring harness that allows you to create a more uniform density repositoryname screen (Fig).

Pop claims. Execution of the transverse branches with length increasing in the direction from the elastic tapes, allows you to form a more dense screen within its regional boundaries. This point allows you to avoid premature release of juvenile fish beyond the external borders of repositoriesuses screen (Fig).

In paragraph 24 of the claims. Run flat ribbon spirally twisted (Fig) allows you to create a greater hydraulic resistance in both the horizontal and vertical directions. In addition, this arrangement enhances the detaining juvenile fish effect, which increases the protection function of the screen.

On A.25 formalisable. Execution elastic tapes (guides) perforated ensures both the exchange of water between the layers repositoriesuses of the screen, and the free movement of juvenile fish from one horizon screen to another. This point does not give a fish fry to leave the screen, and cruising inside him, to remain until the moment of withdrawal to rebooted.

On p claims. The implementation of the holes of perforated elastic tapes in a checkerboard pattern provides a uniform probability of moving fish fry from one layer of the screen to another.

In item 27 of the claims. Execution elastic tapes (guides) of transparent material allows you to provide a normal level of illumination inside repositoriesuses screen, the same as in the flow of the inlet channel, which provides a uniform behavior of juvenile fish caught in the zone of influence repositoriesuses screen.

The solution of this problem is achieved by implementing a new way to protect juvenile fish from entering the intake structure and create a new design of fish protection devices providing this service. Graphic material explaining the essence of the invention is presented in the following figures:

figure 1 - the protection device, the plan;

figure 2 - cross section a-a;

figure 3 - the same, in the case of medium-Yar the sa repositoriesuses screen;

figure 4 - the same, in the case of lower tier repositoriesuses screen;

5 is a layout repositoriesuses screen in the case of the upper and middle tiers of the screen, showing a plot of the concentration of juvenile fish;

6 is a layout repositoriesuses screen in the case of the upper and lower tiers of the screen, showing a plot of the concentration of juvenile fish in the surface and bottom horizons;

Fig.7 - layout repositoriesuses screen in the case of the middle and lower tiers of the screen, showing a plot of the concentration of juvenile fish in the respective horizons stream:

Fig - fullscreen layout repositoriesuses screen, in the case of uniform concentrations of juvenile fish in the depth of the inlet flow channel;

Fig.9 is a movie screen with unilateral placement of local sites-free installation flexible elastic elements, isometric;

figure 10 - repositoryname screen, a top view, location of local areas, made of rectangular form;

11 - repositoryname screen, a top view, location of local areas, completed square form;

Fig - movie screen with bilateral placement of local sites-free installation flexible elastic elements, isometric, sites are located opposite each other;

Fig - fragment of the screen with dfugstore is it the placement of local areas, free installation of flexible elastic elements, isometric, the plots are shifted relative to each other and are staggered;

Fig - movie screen with bilateral placement through the transverse channels, free installation flexible elastic elements, isometric, the channels are located opposite each other;

Fig - fragment repositoriesuses of the screen under the influence of the transit flow rate;

Fig - a movie screen with the resolution of flexible elastic elements, decreasing in the direction of the intake channel;

Fig - variant flexible elastic elements made in the form of bundles with cross branches, placed along the length of the harness, the branches of equal length;

Fig - variant flexible elastic elements made in the form of bundles with cross branches, placed along the length of the wiring harness, branches of different length, and their length increases in the direction from the elastic tape (guides);

Fig - variant flexible elastic elements in the form of flat ribbons;

Fig - variant flexible elastic elements made in the form of a flat spiral ribbons;

Fig - repositoryname screen, single tier, shows the drive system.

The way to protect juvenile fish from getting into water is bornoe construction is as follows.

Depending on the dynamics of vertical slope of juvenile fish in the inlet channel operation service exposes tier repositoriesuses screen 2 according to the following principle - in the horizons of the stream containing the maximum concentration of juvenile fish, forming the maximum hydraulic resistance, and in horizons that do not contain juvenile fish, the screen is not exposed, forming a minimum hydraulic resistance to the flow of the inlet channel. Thus formed repositoryname screen 2 is continuously moved in a horizontal plane, on the shafts 6, at the same time moves in rebooted 4 juvenile fish are concentrated within screen 2.

The protection device includes guides 1, tiered located in depth, across the stream, and repositoryname screen 2, made in the form of a flexible elastic elements 3 attached to the cross rails 1, the actuator (not shown) for moving the flexible element 3 and the guides 1, rebooted 4. Guides 1 made in the form of elastic tape 5 with a width equal to the width of the inlet of rebooted 4, having the ability to move in the horizontal plane, while the flexible elastic elements 3 are attached on both sides of the rails 1, and the elastic strip 5 secured to the longitudinal shaft 6 connected with the means for moving (not shown) rebased rivalshigh screen 2, thus rebooted 4 is performed on both end sides of the elastic tape 5.

In addition, the elastic elements 3 located above the guide 1 may be made of a material with a specific gravity less than the specific weight of water, and the resilient elements 3 located below the guide 1 may be made of material with a specific gravity greater than the specific weight of water.

In addition, rebooted 4 can be equipped with individual valves 7 and made tiered and standalone relative to each other.

In addition, repositoryname screen 2 can be performed with the transverse through-channels 8, the communicating rebottle 4 and free from flexible elastic elements 3.

In addition, the transverse cross-cutting channels 8 can be performed with one hand repositoriesuses screen 2.

In addition, the transverse cross-cutting channels 8 can be performed on the upper side repositoriesuses screen 2.

In addition, the transverse cross-cutting channels 8 can be performed on the bottom side repositoriesuses screen 2.

In addition, the transverse cross-cutting channels 8 can be performed from both sides repositoriesuses screen 2.

In addition, repositoryname screen 2 can be performed with local areas 9, free from flexible elastic elements 3.

In addition, local areas 9 can be aspolozhena on the one hand repositoriesuses screen 2.

In addition, local areas 9 can be placed on both sides repositoriesuses screen 2.

In addition, local areas 9 can be located on the surface repositoriesuses screen 2 in a checkerboard pattern.

In addition, local areas 9, located on two sides repositoriesuses screen 2 may be placed opposite each other.

In addition, local areas 9, located on two sides repositoriesuses screen 2 can be displaced relative to each other.

In addition, local areas 9, the plan can be completed square form.

In addition, local areas 9, the plan may be made rectangular in shape.

In addition, the step of installing the flexible elastic elements 3, width repositoriesuses screen 2, may decrease in the direction of the intake channel 15.

In addition, the flexible elastic elements 3 can be made in the form of a flat tape 10.

In addition, a flexible elastic elements 3 can be made in the form of bundles 11 having lateral branches 12, mounted on their length.

In addition, lateral branches 12 can be made of different length.

In addition, lateral branches 12 can be made of the same length.

In addition, the length of the lateral branches 12 is increased in the direction from the elastic tape 5./p>

In addition, a flat belt 10 can be made of spirally twisted.

In addition, the flexible tape 5 guide 1 can be performed perforated with holes perforation 1.

In addition, the perforation holes 13 can be arranged in a checkerboard pattern.

In addition, the material is elastic tape 5 can be made transparent.

Consumption of water containing juvenile fish and borne debris, flows through the inlet channel 14, and the purified water flow in the intake channel 15. From rubottom 4 juvenile fish are devoted rebootok channels 16 in a safe place located outside the influence of water front. The concentration of juvenile fish in the inlet channel 14, characterized by the curve 17, reflecting the dynamics of vertical slope fish fry.

The protection device operates as follows. Service manual diversion structure, depending on the dynamics of vertical slope of juvenile fish, puts repositoryname screen 2, namely its tier in the combination, which corresponds to the real picture of the dynamics of the slope of juvenile fish in the inlet channel 14 (2, 3, 4, 5, 6, 7 and 8). Installation technology repositoriesuses screen 2 is the following. By means of the actuator (not shown) set a tier of screen 2, unwinding the elastic strip 5 attached to it a flexible ELAST is CNAME elements 3, meanwhile across the channel 14 is formed repositoryname screen 2. Moreover, the maximum hydraulic flow resistance of the inlet channel 14 is formed in the horizons of the stream, in which there is the maximum concentration of juvenile fish, and the minimum hydraulic resistance to flow is formed in the horizons of the stream where there is no juvenile fish.

To ensure effective removal of juvenile fish in rebooted 4 tape 5 by a drive to continuously move the reciprocating while simultaneously moves juvenile fish, which are concentrated within repositoriesuses screen 2, rebooted 4.

To enhance the inhibiting function of the screen 2 it can be executed with the transverse through-channels 8-free installation flexible elastic tape 3, while juvenile fish has the potential to free movement within the channels 8 in the direction of rebooted 4. In addition, the presence of channels 8 simulates the free flow of the inlet channel 14 and causes the retention of juvenile fish within screen 2 for subsequent removal in rebooted 4.

A similar function for the detention of juvenile fish within the screen 2 is carried out by local areas 9. Accommodation sections 9 may be unilateral (with respect to the elastic ribbon 5) (Fig.9) or bilateral (Fig), while sections 9 mouthbut shifted relative to each other or to be located opposite each other (Fig). In addition, sections 9 can be located on the surface of the tape 5 in a checkerboard pattern, which increases the likelihood of getting into their inner space of fish fry and its concentration inside the screen 2.

Flexible elastic elements 3 can be arranged with a pitch decreasing in the direction of the intake channel 15, which increases the delay function screen 2 (Fig) and does not allow juvenile fish to penetrate in the direction of the intake channel 15.

The implementation of flexible elastic elements in the form of bundles 11, provided with lateral branches 12, allows you to enhance the capacity of the new repositoriesuses screen 2, the height (Fig and 18).

The implementation of flexible elastic elements 3 in the form of a flat tape 10 allows you to create a greater hydraulic resistance to flow in the horizon setup screen 2 due to the configuration of the tape 10, as well as to increase the delay function screen 2 (Fig).

The implementation of flexible elastic elements 3 in the form of a flat spiral tape 10 can increase the resistance to movement of juvenile fish in the vertical direction (Fig).

Execution elastic tape 5 with the holes of the perforation allows free movement of juvenile fish from one layer of the screen 2 in the other, thereby delaying its inside the screen 2 for an indefinitely long period of time, dostat CNY to divert it to the side of rebooted 4.

Execution elastic tapes 5 guidelines 1 of transparent material allows you to provide the inside of the screen 2 the same degree of light, which is observed in the inlet channel 14, which allows you to create fish fry similar conditions and does not cause stressful situations.

The proposed method and the protection device for its realization allows the changing dynamics of the vertical slope of juvenile fish to help control water, while in full compliance with the biological characteristics of the security object to provide a high level of fish protection. Furthermore, the basic components repositoriesuses screen - flexible elastic elements, imitate aquatic vegetation, that is the natural habitat for juvenile fish.

Sources of information

1. AS the USSR №1650865 (USSR), IPC E 02 In 8/08, 9/04. "Protection device". Authors: Skin V.N., Chistyakov, A.A., Tsvetkov O.V. and Sinjin AV Publ. 23.05.91. BI No. 19, 1991.

2. AS the USSR №1381233 (USSR), IPC E 02 In 8/08, 9/04. "Water-treating device of the recipient". Authors: Silchenko A.A. and others, publ. 15.03.88. BI No. 10, 1988.

3. AS the USSR №1707128 (USSR) IPC E 02 In 8/08. 9/04. "The protection device of the diversion structure". Authors: A.A. Chistyakov, Fomenko, VA, Cherkasov, VA and Skin V.N. Publ. 23.01.92, BI No. 3, 1992.

4. AS the USSR №1546546 (USSR), IPC E 02 In 8/02. "Method of purification of water from sediment in the open watercourse" Author: sabrin A.N. Publ. 28.02.90, BI No. 8, 1990.

1. The way to protect juvenile fish from entering the intake structure, consisting in the creation of a permeable screen, the depth of the stream, made of flexible elastic elements, the inclusion of means for moving and installation of flexible elements in working condition, pre-concentration of juvenile fish in artificial algae and subsequent transportation of juvenile fish in rebooted, characterized in that the permeable screen formed from a flexible elastic elements in the horizons of the stream with the maximum concentration of juvenile fish, and the screen form in the horizontal plane, while the flexible elastic elements constantly reciprocating move through the means to move them from one Bank to another simultaneously moving the juvenile fish are concentrated within the screen, in rebooted.

2. The protection device, which includes guides, tiered located at depth across the stream, and repositoryname screen, made in the form of a flexible elastic elements attached to the transverse rails, a drive for moving the flexible element and rebooted, characterized in that the guides are made in the form of elastic tapes with a width equal to the width of the inlet of rebooted having the ability to move in g the horizontal plane, while the flexible elastic elements attached on both sides of the guides, and elastic tape secured to a longitudinal shaft connected to means for moving repositoriesuses of the screen, and rebooted performed on both end sides of the elastic tape.

3. The protection device under item 2, characterized in that the elastic elements located above the guides made of a material with a specific gravity less than the specific weight of water, and the resilient elements located below the guides made of a material with a specific gravity greater than the specific weight of water.

4. The protection device under item 2 or 3, characterized in that rebooted equipped with individual valves made out tiered and standalone relative to each other.

5. The protection device according to any one of paragraphs. 2 to 4, characterized in that repositoryname the screen is made with a transverse through-channels, communicating with rubottom and free from flexible elastic elements.

6. The protection device under item 5, characterized in that the transverse cross-cutting channels are made on the one hand repositoriesuses screen.

7. The protection device under item 6, characterized in that the transverse cross-cutting channels are made on the upper side repositoriesuses screen.

8. The protection device under item 6, characterized in that the transverse cross-cutting channels are made on the bottom side repositoriesuses screen.

9. The protection device under item 5, characterized in that the transverse cross-cutting channels are made on both sides repositoriesuses screen.

10. The protection device according to any one of paragraphs. 2 to 4, characterized in that repositoryname the screen is made with local areas, free from flexible elastic elements.

11. The protection device under item 10, characterized in that the local areas are located on one side repositoriesuses screen.

12. The protection device under item 10, characterized in that the local areas are located on two sides repositoriesuses screen.

13. The protection device according to any one of paragraphs. 10 to 12, characterized in that the local areas are located on the surface repositoriesuses screen in a checkerboard pattern.

14. The protection device under item 12 or 13, characterized in that the local sites located on two sides repositoriesuses screen placed opposite each other.

15. The protection device under item 12 or 13, characterized in that the local sites located on two sides repositoriesuses screen, offset relative to each other.

16. The protection device under item 14 or 15, characterized in that the local areas in terms of completed square form.

17. The protection device on p. 10 or 15, characterized in that the local areas in the plan is made rectangular in shape.

18. The protection device according to any one of paragraphs. 2 to 17, characterized in that the step of installing the flexible elastic element width repositoriesuses screen decreases in the direction of the intake channel.

19. The protection device according to any one of paragraphs. 2 to 18, characterized in that the flexible elastic elements in the form of flat ribbons.

20. The protection device according to any one of paragraphs. 2 to 18, characterized in that the flexible elastic elements in the form of bundles having transverse branches attached along their length.

21. The protection device according to p. 20, characterized in that the lateral branches are made of different length.

22. The protection device according to p. 20, characterized in that the lateral branches are made of the same length.

23. The protection device according to p. 21, characterized in that the length of the lateral branches is increased in the direction from the elastic ribbons.

24. The protection device under item 19, characterized in that a flat belt made of spirally twisted.

25. The protection device according to any one of paragraphs. 2 - 24, characterized in that the elastic tape guides made perforated.

26. The protection device on p. 25, characterized in that the perforation holes are staggered.

27. The protection device according to any one of paragraphs. 2 - 26, characterized in that m is a material predetermined elastic tapes are made transparent.



 

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24 cl, 18 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to devices protecting young fish and preventing their getting into diversion facility. Proposed fish protective facility includes filtering water-separating dam made in form of vertical water-separating wall arranged along water intake channel and separating inlet part of channel from water conduit, device for preliminary drawing off young fish made in form of vertical rod installed for rotation by drive arranged before water-separating wall from its end face part pointed opposite to water flow. Rod is displaced relative to water-separating wall towards water intake channel. Device for preliminary drawing off young fish is furnished with additional means to increase fish draw-off effect, said means being made in from of flat round disks rigidly secured in height of rod coaxially with rod. Disks are installed parallel to each other forming slot water intake channels. End face part of water-separating wall adjoining the rod is provided with slots located opposite to planes of arrangement of disks. Disks are installed for free passing relative to slots. Invention provides higher efficiency of drawing off young fish out limits of zone of influence of diversion facility owing to provision of disks considerably increasing area of contact with surrounding medium and creating powerful circulation flow providing diversion of young fish and trash entrained by water behind outer surface of dam.

EFFECT: provision of effective conditions for drawing off young fish out of limits of zone of influence of diversion facility.

15 cl, 16 dwg

FIELD: hydraulic engineering; fish protective facilities.

SUBSTANCE: invention is designed to draw off young fish from zone of influence of water diversion front. Method comes to ejecting young fish into intake part of ejecting plant from section of pond with higher concentration of young fish, creating active ejecting working stream in mixing chamber by entraining volume of water containing young fish into stream created by central ejecting hydraulic jet and further conveyance of water-fish mixture along pressure conduit into fish outlet. At the last stage of conveyance young fish is transported into fish outlet under no pressure conditions by forming hydraulic jet angle to trough of fish outlet, young fish being dropped on surface of fish outlet stream. Invention provides effective conditions for drawing off young fish into fish outlet and reduces damage to young fish. If working ejecting stream is preliminarily saturated with atmospheric air, its outer borders are saturated with air in form of finest microbubbles which form boundary layer ("air cushion") at contact with which young fish do not suffer from discomfort and easily take up hydrodynamic pressure built in mixing chamber. Moreover, provision of boundary layer saturated with microbubbles of air makes it possible to considerably reduce value of friction coupling of two streams, main getting from working nozzle and ejecting, containing young fish.

EFFECT: provision of good conditions for letting out young fish into fish outlet, reduced damage of young fish.

7 cl, 7 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention can be used to protect young fish on diversion facilities used on fishery water sources. Proposed head has water permeable barrier coaxially to which supply line pressure water conduit is installed, stream former conical converging nozzles mounted on top of head, pump suction pipeline and flange connecting suction pipeline with head. Stream former is provided with watertight stream guide conical screen mated with cylindrical ferrule on which conically converging nozzles are mounted. Barrier is made cylindrical and is furnished with stream forming watertight conical screen installed coaxially to its longitudinal axis with angle of taper α from 70 to 110°, pointed by top to suction pipeline, and mated by base with cylindrical ferrule. Barrier can be made of gauze or in form of set of inclined louver rings installed with clearance from 20 to 40 mm relative to each other and at angle of 135° to axis of barrier. Number of conically converging nozzles is from 5 to 20, and their outlet diameter is from 5 to 150 mm.

EFFECT: improved efficiency and provision of prevention of getting of young fish into diversion facility, possibility of removing trash, increased capacity of diversion facility.

5 cl, 2 dwg

Fishway (versions) // 2249653

FIELD: hydraulic works.

SUBSTANCE: invention relates to fish conservation works designed to pass fish spawners through retaining facilities to placed of spawning and fattening. Proposed fishway includes fish conduit made in form of channel whose outlet head is connected with upper pond of hydraulic works, and intake head, with lower pond, cross partitions with swim-in holes, and device to regulate water level in fish conduit made in form of additional cross partitions located higher than minimum designed water level in fish conduit. Lower edges of partitions are made parallel to bottom of fish conduit. Device to regulate water level is furnished with system of perforated pipelines connected with compressor which is arranged under lower edges of additional cross partitions being displaced relative to said partitions upstream. Additional cross partitions are made widthwise fish conduit. According to first design version, perforated pipelines are arranged across longitudinal axis of fish conduit, and according to second version, along said axis. Invention provides effective hydraulic conditions in fish owing to possibility of control of operating conditions of fishway and creating conditions for moving bottom fish along fish conduit to upper pond of hydraulic works.

EFFECT: enhanced reliability in operation.

34 cl, 53 dwg

Fish guide facility // 2245426

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed to pass fish spawners through retaining facilities to places of spawning and fattening. Proposed fish guide facility contains bottom fish guide sill installed at angle to longitudinal axis of fish pass facility and adjoining intake part of trough-fish storage, device to control longsill current with possibility of changing height mark of upper side by means of drive. Longsill current control device is made in form of shutter, flexible envelope and compressor. Shutter and flexible envelope are arranged in body of bottom sill. Shutter can be displaced vertically by changing volume of flexible envelope located from side of lower end face of shutter.

EFFECT: provision of effective control of longsill current at changes of water level in lower pond of hydraulic works.

12 cl, 13 dwg

Fish pass // 2245425

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to fish pass facilities designed for passing fish spawners through retaining facilities to places of spawning and fattening. Proposed fish pass contains fish conduit connecting lower and upper ponds of hydraulic works made in form of overfall fish through, chambers arranged over length to fish conduit and divided by cross partitions with swim-in holes. Partitions are submerged, and bottom of chambers is made with slope to side of upper pond cross partitions are formed by lower end face part of chamber bottom. Swim-in holes form longitudinal channels made in bottom of chambers and they communicate bottom of above chamber with below chamber of fish pass. Bottom of each chamber can be provided with water inlet hole form side of upper pond overlapped by fish grid and communicating with bottom undersluice whose outlet hole is found before inlet first chamber of fish pass and is overlapped by guide grate.

EFFECT: provision of effective passing of fish along fish conduit.

10 cl, 13 dwg

Fish pass // 2245424

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. Proposed fish contains fish conduit connecting upper and lower ponds of hydraulic works made in form of trough, perforated partitions installed on vertical axles for turning and displacement widthwise the trough by means of drive relative to cross guides provided with slot for displacement of axles of partitions, and swim-in holes formed by extreme vertical end faces of partitions. Perforated partitions are made symmetrical relative to vertical axles and are installed separately in section line of trough for independent displacement in slots of cross guides. Lower guide is made in trough bottom. Perforated partitions can be made with surface and/or bottom swim-in holes.

EFFECT: effective control of modes of fish passing along fish conduit.

7 cl, 11 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed to protect young fish from getting into diversion facilities. Proposed device contains fish retaining shield installed in water channel in tiers in depth of water channel with displacement of each higher tier to side of water intake channel, perforated air duct made in form of guides installed across water channel before shield on bottom of water channel, and trash-and-fish trough connected with fish outlet and arranged in upper part of shield parallel to air duct. Guides are made in form of flat plates rigidly installed at angle to flow in intake channel. Each plate is provided with horizontal axle in its upper part on which additional plate is secured from side of water intake channel for turning. Lower end face end of additional plate is provided with radial baffle whose surface has perforation holes. End face part of additional plates is provided with sector stopper from side of fish outlet, horizontal axles of plates being connected with drive. Additional plates can be perforated.

EFFECT: provision of retaining and bringing young fish out of the limits of influence of diversion facility.

3 cl, 12 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed to protect young fish from getting into diversion facilities. Proposed device contains fish retaining shield installed in channel and made in form of perforated pipelines arranged in horizontal tiers along entire depth of channel and connected with source of working medium, perforated air duct placed on bottom of channel directly before shield and trash-and-fish trough arranged in upper part of shield parallel to perforated pipeline and air duct which is connected with fish outlet. Perforated pipelines are furnished with ejectors and fish gathering troughs. Ejectors are connected with pressure line of pump and are placed inside perforated pipelines and in communication with fish gathering troughs through perforation holes made in horizontal plane along both sides of pipelines, fish gathering troughs being rigidly fastened opposite to perforation holes. Inner space of fish gathering troughs is provided with longitudinal horizontal partitions dividing the troughs into separate fish intake parts. Surfaces of fish gathering troughs pointed to surface and to bottom of water channel are made perforated. Cross partitions found inside separate fish intake parts form fish intake channels. Initial part of fish outlet is made with fish intake pocket over entire depth of water channel. End face parts of perforated pipelines pointed to side of fish outlet communicate with inner space of pocket.

EFFECT: provision of retaining and removing of young fish over entire depth of water channel.

3 cl, 7 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to constructions and method aimed at passing spawners through support facilities to places of spawning ands fattening. Proposed head of fish conservation works includes supply unit connected with head water by gate installed in bypass culvert, fish attracting device in form of guides installed before intake part of fishway and made in form of horizontally arranged collectors with non-submerged water outlet holes whose central axes are orientated at different angles to water surface. Collectors are connected with end parts of bypass culverts, being installed for rotation relative to intake part of fishway and made in form of pipes used as base of carrying trusses whose vertical support booms are made coaxially with end parts of bypass culverts. Lower parts of booms are made hollow, being connected with inner space of collectors and bypass culverts. Carrying trusses are connected with drive. To attract fish, "sweep" to attract fish is formed at intake of fish conservation works by opening supply unit to preset value, delivering main attraction water over entire depth of flow and additional attraction water to surface horizons of flow and concentration of fish before intake of fish accumulator-trough. Additional attraction of fish is provided from side of water discharge front of diversion unit with subsequent shifting at end of attraction process of additional attraction water to side of longitudinal attraction water to side of longitudinal axis of fish accumulator-trough. Fish getting into zone of action of additional attraction water is entrained and transferred to zone of action of main attraction water. At end of process of attraction, delivery of additional attraction water is stopped, and fish is concentrated before intake of accumulator-trough.

EFFECT: provision of hydraulic conditions to attract fish from large width of waterway.

3 cl, 5 dwg

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