Electric fish barrier of directed action. RU patent 2473735.

IPC classes for russian patent Electric fish barrier of directed action. RU patent 2473735. (RU 2473735):

E02B8/08 - Fish passes; Passages for rafts or boats

A01K79/02 - by electrocution (electric circuits therefor H05C)

Another patents in same IPC classes:

Electric fish barrier / 2473734
Electric fish barrier includes an electronic control unit (1) and a single-row system of electrodes (2) divided into sections. Each electrode (2) is divided along a vertical line into elements (3) with the help of insulators (4). Sections of electrodes (2) are made of stiff electrodes. Electrodes (2) are made in the form of pipes, bars or flexible electrodes. Flexible electrodes may look like soft bare cables or a chain with a bare strand pulled through chain links, or a chain with a copper tinned mat placed on it. Pulse current from the supply unit (1) is supplied to each separate element of the electrode (2) with the help of a supply cable (5). It is possible to supply voltage of different potential to separate elements of the electrode (2) at different depths.

Fish-protection structure of intake works / 2465396
Intake works fish-protection structure is related to the field of hydroengineering facilities and is used to prevent ingress of roe, larvae, young fish and full-grown fish into the intake works. The structure comprises a water-intake pipe 15, an inlet flow-forming head wall 12, a fish-receiving pod 5, a fish-diverting nozzle 9, an output head wall 11 of the fish-diverting nozzle 9, a curvilinear U-shaped water-receiving chamber 1, chambers-shelters for fish 7. At the inlet of the water-receiving chamber 1 there are coarse garbage-retaining grates 2 installed. Between the curvilinear convex 3 and concave 4 walls of the water-receiving chamber 1 there is the fish-receiving pod 5 installed. The fish-receiving pod 5 is arranged in the form of a vertical curvilinear wall with holes for passage of a part of a fish flow 6 with fish into the chamber-shelter 7. In the centre of the curvilinear concave wall 4 of the water-receiving chamber 1 there is a receiving window arranged with guide blades 8 of the fish-diverting nozzle 9. The fish-diverting nozzle 9 is arranged in the form of a box with water discharge with fish along a pipe 10 towards the outlet head wall 11. The outlet head wall 11 is arranged outside the limits of the water intake action area. The inlet flow-forming head wall 12 is inserted into the curvilinear convex wall 3 of the water-receiving chamber 1. The inlet flow-forming head wall 12 is arranged in the form of radial vertical blades 13. In the space between vertical blades 13 there are inclined guide partitions 14. Partitions 14 forward the flow without fish into a vertical riser of a water intake pipe 15. The pitch 16 between guide partitions 14 reduces top down. At the ends of radial vertical blades 13 there are flexible canopies 17 fixed to divert fish to the fish-receiving pod 5.

Method to let fish through via high head water development / 2451778
Invention relates to hydraulic engineering, namely, to methods to attract and transfer fish producers via retaining structures to areas of spawning and ongrowing. In the proposed method a fish pass is arranged in the form of a channel 1 of rectangular cross section with a bottom inclination having incomplete transverse partitions 2 or in the form of a tray 3 with a stepped bottom and transverse partitions 4 with swim-in holes 5, forming a row of chambers or pools 6 and falls between them. In some internal transverse partitions 7 of the fish pass the swim-in holes 8 are framed with a flow-generating apron 9. A system of jet-forming nozzles 11 is installed under coverage of the apron 9 in galleries 10. Besides, nozzles 11 are aligned towards an upper reach and are arranged at the angle or in parallel to an axis of a swim-in hole 8. The system of jet-forming nozzles 11 is supplied from distributing headers 12. Water required to generate hydraulic jets 13 is supplied to distribution headers 12 along bypass discharge pipelines. Further a transit water flow 17 is sent from the upper reach to orient fish among chambers or pools 6 of the fish pass. At some inner transverse partitions 7 of the fish pass a system of jet-forming nozzles 11 is connected for swim-in holes 8. At the moment of water outflow via the system of jet-forming nozzles 11 the hydraulic jets 13 are formed. For more efficient full rest of fish moving along the fish pass in the fish pass pool 16, appropriate hydraulic conditions are developed using hydraulic resistance to a transit flow 17, i.e. zones of partially equal pressures 15. Whirlpool zones 18 in tray structures are created for partial rest of fish prior to a rush to overcome a transit flow 17 or swim-in holes 5. Hydraulic conditions supporting full efficient rest of fish moving along a fish pass are developed via sections of a fish pass route having equal length or via sections of a fish pass of different length, besides, in this case the section lengths regularly decrease towards the upper reach.

Fish pass for high-head water development / 2451132
Fish pass for high-head water development is installed in a water development dam site. The fish pass is arranged in the form of an open staged, inclined or inclined-staged overflow tray 1 of a fish bypass channel, connecting upper and lower water development reaches. Inside the water overflow tray 1 of the fish bypass channel the vertical transverse partitions 2 and 3 are installed with swim-in holes 4 and 5 accordingly. Transverse partitions 2 form fish pass chambers 6, 7, 8, 9, 10 and 11 between each other. Transverse partitions 3 with swim-in holes 5 are framed with flow-forming aprons 12, where systems of jet-forming nozzles 14 are installed under their coverages in galleries 13. At the same time systems of jet-forming nozzles 14 are directed towards the above fish pass chamber and are installed at the angle or in parallel to the axis of the swim-in hole 5. Pairs of near transverse partitions, where in one above transverse partition 3, included into this pair, the swim-in hole 5 is equipped with a system of jet-forming nozzles 14, and on the other below transverse partition 2 from the same pair the swim-in hole 4 without a system of jet-forming nozzles 14, there are fish pass reservoirs created for recreation 15. Fish pass reservoirs for recreation 15 divide the fish pass into sections. Fish pass sections may comprises an identical number of fish pass chambers 6, 7, 8, 9, 10 and 11. Besides, fish pass sections may comprise different numbers of fish pass chambers, moreover, the quantity of chambers in the fish pass section regularly reduces towards the upper reach. Besides, the fish pass sections may form one fish pass flight, creating a single-flight fish pass. Besides, the fish pass sections may form several opposite fish pass flights, creating a multiple-flight fish pass.

Riverbed spawning complex / 2444187
Complex comprises a flooded spawning ground, a channel of a water-conducting spawning track of trapezoidal cross section with elements of higher roughness at the bottom. The flooded spawning ground is installed in the upper reach of the complex. The water-conducting track is formed with side dams that narrow the channel and a bottom threshold in the head part. The bottom part of the channel section is arranged with an inclination. Wintering pits are arranged in the end of the water-conducting track.

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Fish protection structure of tidal power plant consists of not less, than two cylinder support-casings (1). A line of supports-casings (1) setting is perpendicular to direction of tide (2). Along vertical supports-casings (1) are divided with horizontal partition (5) into tiers. Working chamber (6) is installed in centre of each supports-casings (1). Chamber (6) is equipped with bypass pipes. Stationary axial swirling unit (9) is located in centre of working chamber (6). Swirling unit (9) is made in form of cylinder with guiding blades. The blades have a shape of a logarithm spiral. The cylinder is open on side surface and has closed upper and lower bases. An opening in centre of the cylinder is communicated with a lift pipe of water supply pipe (8). An end wall of fish removing device is made in form of perforated truncated cone (10) in working chamber (6). Stationary axial swirling unit (9) is located in cavity of cone (10). Inlet holes (11) of fish removal pipes are arranged on an external side of the swirling unit in the working chamber. Outlet orifices of fish removal and bypass pipes enter a gap between adjacent cylinder supports casings. Refuge camber (17) is formed between external surface of perforated truncated cone (10) and a wall of working chamber (6). Dry chamber (19) is positioned between the wall of the working chamber (6) and a wall of the support-casing (1).

Airlift filter for filtration of hydrocoles and suspensions / 2428542
Device is formed with the help of two or more water impermeable baffle booms joined to each other by means of water impermeable links installed in a watercourse. Air is supplied in space between baffle booms, at the bottom. Water-air flows that occur in the process capture hydrocoles and suspensions available in the watercourse that pass in a diameter between the air duct and the baffle booms, and they are moved into the upper part of the restricted space between the baffle booms and further into a deflecting device.

Fish protection water intake unit / 2423578
Fish protection water intake unit consists of a suction nozzle 6, connected via a pump 5 with a discharge pipeline 3 and equipped with a rotary mesh drum 9, which is placed into a cylindrical jacket with a fish outlet 7. A fixed washing accessory 8, designed to clean a webbing net with water jets, is connected to a pipeline 1 to supply water, which is connected with the discharge pipeline 3 on a section arranged behind the pump. The pipeline for water supply into the washing accessory is equipped with a valve 2 with an electric drive, an electric motor 15 of which is connected via a magnetic starter 14 with a time relay 13 and a reverse. The relay 13 is connected with a membrane vacuummeter 11, equipped with a pressure sensor 12 and installed on a suction nozzle 6. The suction nozzle is equipped with a valve 4.

Fish protection device of off-shore structure water intake / 2423577
Fish protection of off-shore structure water intake comprises a bottom flow-forming rapid, an airlift that creates an air-bubble curtain, a fish outlet and a bottom water intake. The fish protection device is equipped with a water-receiving chamber, in the bottom of which there is a bottom water intake. In the water-receiving chamber there is an airlift arranged in the form of a pontoon, at the bottom of which there is a flow course suppressor attached with a gap for flow outlet. The lower end of the suppressor is connected with a water-receiving pipe. Above the pontoon there is a distributing header, above which there is a fish collector, the outlet nozzle of which is connected to the fish outlet. The bottom flow-forming rapid is arranged in the form of a head with a slot water receiver.

Method to control passage of fish through hydraulic unit / 2408763
Method to control passage of fish through hydraulic unit consists in formation of a controlled water flow with the help of water jets outflowing from jet-forming nozzles, framing inflow holes, in a fish-passage route equipped with separating walls with inflow holes. Jet-forming nozzles are installed along with the flow of a transit flow and towards transit flow. Speed mode of water flow along fish-passage route is controlled by intensity of water jets supply by changing their number n. Initial speed of water jets outflow from jet forming nozzles directed along with transit flow required to form optimum attracting flow is determined by a given dependence.

Method of fishing and catching marine invertebrates / 2406300
Invention may be used in the fishery of aquatic organisms positively reacting to light. Method of catching fish and marine invertebrates is to place on the perimetre of the boat of light sources parallel to the water surface for at least two levels with the possibility of rotation about the vertical and/or one of the horizontal axis and/or towards their longitudinal axis, at that the power of light sources placed on the lower level is lower than the power of light sources located on the upper level. Concentration of catch is carried out by displacement of commercial peak of the spectral characteristic of light sources located on the lower level, towards the red light and/or their alternate turning-off towards the light sources located above the gear. Preferably, the light sources of the upper level with a capacity of up to 5 kW are placed above the deck at the height of the upper tier of ship masts. At the lower level the lamps are used with capacity from 0.5 to 1.5 kW. Upon completion of the concentration with the well-known techniques the object of fishing is captured, the gear is raised, and the catch is notched.

Method of sea hydrobiont catching positively reacting to light / 2328116
Method includes search of hydrobiont congestions, vessel statement in drift, hydrobiont concentrating under the vessel hull, catching hydrobiont by storeys. Fishing of congestions is carried out under the hull of one or several vessels consistently on different horizons of congestion by several stripping tools of catching in steps lowered on all thickness of congestion of sea hydrobiont.

Method of electrification of trawls and device for realization of this method / 2304385
Proposed method consists in securing the electric power source in towing line in vicinity of trawl wing for supplying the electric current to system of electrodes located on trawl net envelope. Two independent power sources are secured at trawl wings on standard points of location of depressors. Wires supplying pulse current are connected to electrical connectors on control units of power sources; electrical fields formed by them are used for control of fish behavior in the course of fishing. Device proposed for realization of this method includes electric current generator driven by impeller actuated by energy of water incoming flow. It is placed in metal watertight housing and is provided with three-phase induction AC generator, bipolar current pulse oscillator, voltage, frequency and pulse duration control unit. Control unit is provided with single-contact connectors for connecting the wires running from electrodes on net section of trawl.

Catching device for electric light fishing / 2278510
Proposed device has funnel with bell-like end with suction zone created by water flow and narrow end connected with fish intake hose. Device is furnished with load unit and lamps to create light field attracting fish to inlet hole of funnel. Funnel is made profiled in meridional section with inner streamlined surface, with inlet diameter at bell-like end providing position of suction zone border close to inlet hole. Lamps creating light field are displaced in direction of flow behind suction zone and they partly project into funnel space. Outer part of lamps is covered with cases non-transparent for light.

Method of energizing electrodes for directional movement of fish / 2273991
Method comprises energizing one-row sectional electrode system separated with pulses. The negative voltage pulse is supplied alternately to one of the sections of the electrodes, and this section is converted into the cathode. The positive voltage pulse is fed to the other sections of the electrodes, which are not adjacent to the cathode, and they are converted into the anodes. According to the first version, the positive voltage pulse is fed to the all other sections of the electrodes, and they are converted into the anodes, excluding the sections adjacent to the cathode section of the electrodes. According to the second version, the positive voltage pulse is alternately fed to the even sections, and the even section is then converted into the cathode, or to the uneven sections of the electrodes, and the next even section is then converted into the cathode. According to the first version the number of the sections should be no less than 10, and according to the second version the number of sections should be no less than 18-20.

Electric fish barrier of directed action / 2473735
Fish barrier includes an electronic control unit and a double-row system of electrodes divided into sections. Each row of electrodes combined into half-sections is arranged at the angle to an arriving flow. A section of electrodes comprises two half-sections, one half-section from each row of electrodes. In the first version, a cathode is in turns one of the electrode sections, anodes are all remaining sections of electrodes. In the second version, a cathode is in turns one of the electrode sections, anodes are all remaining sections of electrodes, not adjacent to the cathode one. The produced homogeneous cathode electric field creates a wide deterring zone, which aligns fish away from electrode sections and takes it away from the protected water intake.

FIELD: electricity.

SUBSTANCE: fish barrier includes an electronic control unit and a double-row system of electrodes divided into sections. Each row of electrodes combined into half-sections is arranged at the angle to an arriving flow. A section of electrodes comprises two half-sections, one half-section from each row of electrodes. In the first version, a cathode is in turns one of the electrode sections, anodes are all remaining sections of electrodes. In the second version, a cathode is in turns one of the electrode sections, anodes are all remaining sections of electrodes, not adjacent to the cathode one. The produced homogeneous cathode electric field creates a wide deterring zone, which aligns fish away from electrode sections and takes it away from the protected water intake.

EFFECT: improved characteristics of fish departure from a zone of fish barrier coverage due to reduced impact of arriving flow at fish in process of their exit from an electric field created by a device, and higher efficiency of device functioning.

2 cl, 1 dwg

The proposed technical solution relates to fisheries and can be used for directional movement of fish, mainly for fencing accumulation zones of fish or routes of their movement from falling fish in water.

There are technical solutions, affecting fish front electric field, discouraging her from the water intake see, e.g., «A way to attract the fish» Avtosvit. The USSR №390799, MCL AC 79/02, «Device for directional movement of fish» Avtosvit. The USSR №535930, MCL AC 61/00, 79/02.

Closest to the claimed utility model is a way of eating current pulses is divided into sections for single row pulse system of electrodes, in which one section of the electrodes alternately becomes the cathode, while the other sections electrodes neighboring cathode become anodes (see RF patent №2273991, IPC AC 79/02).

The disadvantage of a design is the long stay fish in an electric field, which must be overcome to leave the field, the large impact of the approach flow to the water intake.

The objective of the proposed technical solution is to minimize impacts on fish approach thread when its withdrawal from the device and exiting the zone of influence of an electric field.

The task is achieved by the proposed double-row electric , with each row in the United electrodes is at an angle to the approach flow.

Distinctive features of the prototype signs of the claimed utility model are: the presence in two series in the United electrodes, each series of electrodes is at an angle to the approach flow, one section of the electrode consists of two , one of each series of electrodes.

The technical result of the proposed device is shown in the improved characteristics of the waste fish out the range of by reducing the impact of the approach flow on fish during their exit from the electric field created by the device, and the increase of efficiency of functioning of the device.

The figure schematically shows an example of the execution of the claimed device.

The device has the electronic control unit 1, which is connected angled to the approach flow number two in the United electrodes. The device has a V-shaped configuration. Section electrodes (A-A 1 , B-B-1 and etc) is a two electrodes 2, one of each series of electrodes.

It should be noted that V-shaped device configuration is used as a special case of execution devices, two series of electrodes can be placed not only conical, but in parallel, in the form of an ellipse, etc., i.e. the configuration of the device can be different.

The number of electrodes in one can be different and it is from one and more. The number of electrodes the device and electrodes in each is determined depending on the design features of the device and the specific conditions of its operation (from the depth of the waters, migration routes of fish, places of their accumulation, bottom relief etc.).

The work of the claimed device is made in two variants.

In the first option, when enabled electronic unit 1 signal pulse current negative potential voltage supplied turn to one of the sections of the electrodes (for example, A-A 1 ), and this section of the electrodes acts as the cathode. A positive voltage potential goes on all the remaining sections of the electrodes B-B-1 , C-C 1 D D 1 E-E , F-F 1 ...N-N 1 , they perform the role of the anode. Then cathode becomes the next section electrodes (B-B 1 )and all the remaining sections (respectively, A-A 1 C C 1 D D 1 E-E , F-F 1 ...N-N 1 ) becomes the anode, and so on down the chain, the result is a homogeneous cathode electric field, creating extensive scary zone, orienting fish from sections of the electrodes and withdrawing it from the protected water intake.

In the second scenario, the negative potential voltage served successively in one of the sections of the electrodes (for example, C-C 1 ), making this section of electrodes, cathode, and a positive voltage potential is served on all the remaining sections of the electrodes with neighbouring cathode (A-A 1 E-E , F-F 1 ...N-N-1 , respectively), making them the anodes. Then cathode becomes the next section electrodes (D-D 1 ), and all other non-adjacent sections (respectively, A-1 , B-B 1 F-F 1 ...N-N 1 ) become the anodes. Moreover, when applying a negative voltage potential on the initial section of the electrodes, A-A 1 , making this section of the cathode, anode become, respectively, all sections of electrodes, with the exception of sections a B-B-1 and N-N 1 , adjacent to the section of the electrodes, A-A 1 . Similarly, if the cathode is the end section N-N 1 , the anodes are becoming not adjacent sections of the electrodes, i.e. B-B-1 , C-C 1 D D 1 E-E 1 .

During the functioning of technical solutions, the electric field is produced not only from the side of the approach flow, the outer side of the device, but between two rows of electrodes, i.e. inside the device (in this case, inside the cone, as the device has a conical shape), it enhances the effect of scaring away fish from the device and output them outside the influence of the water intake, increasing the efficiency of the device.

When the fish of the zone of influence of the electric field generated electric , the reaction of rejection and exiting from the danger zone becomes dominant. Pass through an electric field in the area of water intake of fish are likely to avoid, first, by increasing the speed of movement in the direction opposite of the approach speed, and, second, through the cross aimed evading movements. Fish shows the combined reaction evasion. The actual behavior of fish near obstacles in the form of electric is not a one line response, but a complex sequence of different models of behavior and change speed and direction of movement. The reaction of fish waste from the device occurs at a sharp angle to the obstacle, performing wavy maneuvers. The amplitude of movement is higher in big fish, than the juvenile. The distance along the screen, overcoming large fish for the same number of shots, and more. Therefore they are quickly out of the dangerous zone of influence of a water intake. The amplitude of the maneuvers movement of juveniles below. Juvenile fish, making attempts departure from the screen and continuing along its surface, tired quicker.

In contrast to the linear arrangement of single-row at right angles to the approach flow configuration electric double row of where both the number of electrodes are positioned at an angle to the appropriate thread, can reduce the impact on fish of the approach flow, facilitating her departure from and exit from the zone of action of the electric field.

Juveniles under the influence of an electric field, showing a defensive reaction, abruptly departs from obstacles in the form of the joint section of the electrodes and moves transit flow on a tangent to the line electrodes, angled toward the stream, in the area where the current velocity is below the critical speeds for fish. This allows juveniles to get themselves to the safe zone of the water source and reduces the duration of stay of fish in the electric field created by the device.

The task consists in minimizing the impact on fish of the approach flow in the process of exit from the zone of action of the electric field and the shortening of stay of fish under the influence of an electric field is performed.

Application of the claimed device is designed to use in the industry known devices and elements.

This technical solution can be used to limit the accumulation zones of fish or routes of their movement from falling fish in water.

1. Electric guide actions, including electronic control unit and is divided into sections-row system of electrodes, wherein each row in the United electrodes is at an angle to the approach flow, section electrode consists of two , one of each series of electrodes, cathode turn becomes one of sections of the electrodes, anode become all the remaining sections of the electrodes.

2. Electric guide actions, including electronic control unit and is divided into sections-row system of electrodes, wherein each row in the United electrodes is at an angle to the approach flow, section electrode consists of two , one of each series of electrodes, cathode turn becomes one of sections of the electrodes, anode become all the remaining sections of the electrodes, not adjacent to the cathode.