Fish protection device

 

The invention relates to hydraulic engineering and can be used to protect juvenile fish from entering the intake. The protection device includes a protective surface water intake (SGP) and the water distribution pipe with the primary and secondary nozzles (DS) treegenerator connected to a source of pressurized water. (DS) are located on the seaward side of the main nozzle and inclined to (PEL) at angles larger than the main nozzle. Water jets spouting from the primary and secondary rows of nozzles treegenerator form two hydraulic screen - primary and secondary, which, in turn, create a single volume hydraulic screen. Surround screen not only washes itself (VIZ), but also organizes away from her, in the area where directed in the intake flow velocity does not exceed the critical values for protected fish, transit for speeds above the critical for downstream juvenile fish. The invention will improve the protection efficiency of the devices (VIZ), the flow velocity of the water through which the water exceeds a critical swim speed downstream juvenile fish, by forming a front intake front surround GI-break-before:always;">

The invention relates to hydraulic engineering and can be used to protect juvenile fish from entering the intake.

Known fish protection device of the diversion structure on A. C. the USSR 1191517, E 02 In 8/08, 1984, including protective and water intake screen, in the head part which is installed to the main and additional nozzles treegenerator intended for before forming the protective surface water intake hydraulic screen with periodic changing the position of the hydraulic jets relative to the water front.

For effective protection of fish in this device the rate of water inflow into the intake must not exceed the critical swimming speed for the least amount of protected fish. In most cases when installing a protective water-intake screens directly into the slots of the input window of the diversion structure to provide the desired rate of water inflow into the estuary is not possible. The removal of the same in the reservoir protective intake screen with the aim of increasing its area is not always possible, mainly due to the impact on the screen of ice loads. Used in the prototype pulsating hydraulic screen allows you to increase efficiency is DataBar also must not exceed the critical values for the protected fish.

The purpose of the invention is to improve the protection efficiency of devices with protective water surface, the velocity of flow of the water through which the water exceeds a critical swim speed downstream juvenile fish through the formation before the intake volume hydraulic front of the screen, eliminating direct contact early downstream juvenile fish with a protective water surface.

In Fig.1 shows a protection device, front view, Fig.2 - the same in plan, Fig.3 - in the same plane with the third additional adjacent nozzles.

The protection device includes a section of the protective-receiving surface (1), installed in the input boxes of the diversion structure (2). At the head of each section (1) framed water distribution pipe (3), connected to a source of pressurized water (not shown). On the pipe (3) set the main (4), and from seaward from him more (5) rows of nozzles treegenerator. Nozzle main number (4) sent under less nozzle additional number (5) under large angles to the protective surface water intake (3). Between the primary (4) and additional (5) rows of nozzles can be installed third additional number of nozzles (6). Each different from each other, the threads (7, 8 and 9).

The protection device operates as follows.

The water in the input window (2) water intake comes flowing through protective-receiving surface (1). The speed of flow of water through the surface (1) may exceed the critical values for the main types of protected downstream juvenile fish. Water jets spurting from the core (4) and additional (5) rows of nozzles treegenerator form two hydraulic screen - primary and secondary, which, in turn, create a single volume hydraulic screen. Surround screen not only washes the actual protective-receiving surface (1), but also organizes away from her, in the area where directed in the intake flow velocity does not exceed the critical values for protected fish, transit for speeds above the critical for downstream juvenile fish. This creates an opportunity for the organization of multi-stage protection of juvenile fish of various size and species composition.

At the first stage protection early downstream juvenile fish. This is ensured by the additional hydraulic screen angle to transit over the watercourse in the area, where the influence of water intake is not enough for the external border zone surround screen, i.e. with additional hydraulic screen.

The second step is to protect the remaining downstream, as well as a significant part of the grown juvenile fish passed through additional hydraulic screen. When the volumetric flow of hydraulic screen between the additional and main components is formed internal turbulent flow zone. Once in this zone, the width of which is comparable with the width of the protective water intake section (1), juvenile fish have already moved spotno transit period, i.e., almost parallel to the water front. Disorientation fish in the turbulent zone contributes to its further slope along the water front and removed from the influence zone of water intake.

In the third stage of the protection of the grown fish, good swimmers, actively moving in runoff flows. Once in the zone of the protective-receiving surface, washed by the main hydraulic screen, adolescent fish, showing the reaction of avoidance, self away from the source of danger (1) and, continuing to slide in transit within, out of the range of intake.

To improve the protection efficiency of the entire device, in particular in the second stage for the operator, designed to improve the conditions of removal of juveniles from internal turbulent zone volume hydraulic screen.

In the absence of a watercourse early downstream juvenile fish to protect the grown fish, stronger swimmers or performance degradation abstraction at which the rate of flow of water through the protective surface water intake (1) becomes less than the critical speed for protected fish, with the aim of saving water pressure hydraulic screen it is advisable to arrange only the main number of nozzles (4). Additional rows of nozzles (5 and 6), powered from an isolated thread (7 and 8) water distribution pipe off.

Claims

The protection device made in the form of protective and water-receiving surface and having primary and secondary nozzles treegenerator connected to a source of pressurized water, characterized in that the nozzle treegenerator installed on the water inlet, so the additional nozzles are located on the seaward side of the main nozzle and inclined to protective water surface at angles larger than the main nozzle.

 

Same patents:

The invention relates to hydraulic engineering and can be used to protect juvenile fish from entering the intake

The intake device // 2213179
The invention relates to the field of hydraulic engineering, in particular to a device for automatic startup of centrifugal pumps and fish protection devices

The invention relates to the elements of hydraulic structures and is intended in particular for use in intake structures

The invention relates to hydraulic engineering and can be used to protect juvenile fish at water intakes

The invention relates to hydraulic engineering, namely, devices, preventing the intake of juvenile fish and various contaminants transported by the stream

The invention relates to a device for obtaining or collecting drinking water or tap water from ground (surface) water, can be used in water and is designed to protect juvenile fish from getting into the intake when the intake of water from surface sources

The invention relates to hydraulic engineering and is intended to scare off the fish from the deep water intake structures

The invention relates to hydraulic engineering and is intended to scare off the fish, their larvae and juveniles from intakes

The invention relates to the construction of fish passes and is designed for continuous raising of fish in the fish passage facility and transfer of fish from downstream of the waterworks at the top and back

The invention relates to hydraulic engineering and is intended to scare off the fish from intakes

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

FIELD: hydraulic structures, particularly fish passes in water-intake structures.

SUBSTANCE: method involves supplying water stream free of young fish in waterway; forming hydraulic screen near water-intake influence area to separate above area from main stream of water-intake structure; forming whirlpool area near water-intake shore edge. Water stream is formed upstream water-intake structure. Water for users is taken from whirlpool area formed by inner water spray boundary and shore edge. Facility includes water-intake structure arranged at shore line, water-intake pipes connected with pump, stream former and means for water stream creation in waterway. Means for water stream creation is made as channel operating in non-pressure regime and having outlet part arranged upstream water inlet. Marks formed on channel bottom and waterway bottom coincide one with another. Stream former is located downstream water intake and directed in downstream direction.

EFFECT: creating of hydraulic conditions to protect young fish from ingress in water-intake structure.

14 cl, 9 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. Control of fish passing through fish conduit comes to creating fish attraction water fed from upper pond of hydraulic works into fish conduit and further into lower pond, forming favorable hydraulic conditions directly in fish conduit by changing water level drop between cross partitions by displacing partitions proper relative to bottom of fish conduit and creating overcomable velocity in swim-in holes of partitions. Partitions are displaced along length of fish conduit by driven in direction of upper pond and, simultaneously with displacement of partitions, water level drop formed between partition formed between partitions is displaced, and value of local water level drop is changed over length of fish conduit owing to nonuniform perforation of sections of partitions having different porosity.

EFFECT: provision of controllable hydraulic conditions in fish conduit contributing to effective movement of fish along its length.

19 cl, 18 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. Hydraulic resistance lengthwise fish conduit is formed by means of cross partitions installed along conduit and secured on cross guides at different height marks in depth marks in depth of current and made flexible of elastic material, and delivery of working water into fish conduit to create conditions for passing of fish into upper pond and attraction on fish to inlet of fish pass and subsequent changing of position of partition of partitions relative to fish conduit. Cross partitions form system of swim-in holes creating maximum hydraulic resistance to current passing through fish conduit. Lower partitions in direction of current are installed opposite to swim-in holes formed by upper partitions, thus changing paths of fish movement and total value of hydraulic resistance created by system of partitions.

EFFECT: provision of effective movement of fish to side of upper pond by regulating hydraulic resistance lengthwise fish conduit.

15 cl, 35 dwg

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 guide has prismatic fish guide slots made in bottom of head race of lower pond arranged at acute angle to longitudinal axis of fish pass facility. Slots differ in width over length adjoining by minimum width to inlet of trough-fish storage and they are made in plan in form of rays diverging relative to longitudinal axis of fish pass facility. End face parts of slots adjoining inlet of trough-fish storage communicate with trough channels whose bottom is made tilting to side of lower pond. Fish guide is provided with bottom undersluices and stream-forming nozzles communicating with undersluices which are connected by gate with upper pond, nozzles being arranged in bottom part of slots and orientated to lower pond.

EFFECT: provision of hydraulic conditions in zone of fish guide contributing to effective movement of fish to inlet of fish pass facility.

4 cl, 9 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. According to proposed method regulated fish directing current is formed along downstream side of bottom sill by delivering water from side of spillway dam, subsequent delivery of attraction water from trough-fish storage and formation of longitudinal screw roller formed behind downstream side of bottom sill. In case of change of amount of discharge water through spillway dam and in case of increase or decrease of depth of water in lower pond, total height of bottom sill is changed to change height mark of its upper side. Fish guide includes bottom fish guide sill installed at angle to longitudinal axis of fish facility and adjoining inlet part of trough-fish storage, device to control longsill current which can change its height mark of upper side by means of drive and baffle stationary secured on upper side of bottom sill from side of downstream headless side wall to form horizontal web. Device to control longsill current is located on web and is made I form of flexible elastic envelope connected with compressor through branch pipe and supply air conduit.

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

14 cl, 15 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to methods and facilities designed for passing fish spawners through retaining facilities to places of spawning and fattening. Method comes to delivery of transit flow from side of spillway dam, forming longitudinal screw roller along headless side of bottom fish guide sill by setting sill at acute angle to transit flow and delivering attraction water to inlet hole of trough-fish storage. When forming longitudinal screw roller, part of transit flow passing higher than bottom sill side is redistributed in direction perpendicular to side surface of bottom sill towards longitudinal axis of trough-fish storage. In case of water rise in lower pond, using closed louver slats, water tight plane is formed above upper side of sill making it possible to form bottom fish guide sill of greater height. Fish guide includes bottom fish guide sill installed at angle to longitudinal axis of fish facility and adjoining inlet part of trough-fish storage, device to control longsill current whose position can be changed by means of drive which is made in form of system of louver slats installed on upper edge of bottom fish guide sill and connected with drive. Surface of louver slats can be perforated.

EFFECT: provision of effective control of, longsill current.

4 cl, 7 dwg

Pool-type fish pass // 2245419

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for passing fish spawners through retaining facilities to places of spawning and fattening. Proposed pool-type fish pass includes fish conduit with inlet and outlet heads made in form of channel with longitudinal slope and with cross section of prismatic form connecting lower and upper ponds of hydraulic works, fish resting basins, arranged discretely over length of fish conduit and connected with sections of channel, and feed unit from side of upper pond. Sections of channel of fish conduit between basins are provided with one or several longitudinal partitions dividing them into independent channels made with different longitudinal slopes. Top mark of each longitudinal partition is higher than water level mark in channel.

EFFECT: provision of hydraulic conditions contributing to effective movement of fish over length of fish pass.

13 cl, 24 dwg

Fish pass // 2245420

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 pass includes fish conduit connecting lower and upper ponds and provided with stepped bottom and fish transportation device consisting of pressure pipeline, dispensing chamber and stream-forming channels. Each step of fish pass terminates in spillway sill connecting lower chamber with upper chamber. Stream-forming channels are orientated to side of upper pond, being arranged at acute angle to bottom of fish conduit chamber and connected with dispensing chamber. Pressure face of spillway sills is made in form on inclined plane with tilting to side of lower pond, and stream-forming channels are made on inclined plane, lower than the plane, and in form of concave chutes widening in direction of upper chamber of fish pass. Outlet holes of stream-forming channels are coaxial with chutes. Angle of arrangement of stream-forming channels decreases in direction of upper step of fish pass.

EFFECT: provision of hydraulic conditions in fish conduit for effective movement of fish along its length.

3 dwg

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for preventing getting of young fish into diversion facilities. Proposed device contains fish retaining shield made in form of hollow guides arranged in tiers across water channels in depth with displacement of each upper tier towards diversion channel. It contains also perforated air duct located on bottom of water channel directly before said shield and train-and-fish trough arranged in upper part of channel in parallel with air duct and connected with outlet and device to let out young fish arranged in height of fish retaining shield. Guides of U-shaped are installed at angle to current of intake channel, their planes are perforated and open end part is pointed to bottom of water channel. Young fish let out device is made in form of perforated shields installed side guides for vertical displacement by drive in height of fish retaining shield relative to additional guides made from side of bank edges of intake channel. Perforation holes of shields and u-shaped guides do not coincide in light.

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

8 dwg

Up!