A device and method for assisting migratory fish to enter the intake of a fish pass

Abstract

The application discloses a facility for assisting anadromous fishes to enter a fishway inlet and a method thereof, relates to the technical field of fish passing facilities, and is a technology for smoothly guiding fishes to enter a fishway inlet in a wide range. The facility for assisting anadromous fishes to enter a fishway inlet comprises a plurality of fan ring units, an air compressor, a control center, fixed piles and a flow regulating unit, the fan ring units are gradually enlarged one by one in a radial manner from the fishway inlet to the downstream of a river, and each fan ring unit is composed of a fan ring, a fish attracting device, a sensor and a bubble curtain device. The bubble curtain device is arranged along the outer side of the fan ring, the air compressor is connected with the bubble curtain device through a pipeline, and the control center is in communication connection with the fish attracting device, the sensor, the bubble curtain device and the air compressor. The application has the advantages of comprehensively attracting fishes by sound and light, is favorable for long-distance discovery of anadromous fishes and smooth arrival of the fishes at the fishway inlet, and has important significance for protecting fish resources and promoting water ecological civilization construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fish passing facilities, in particular to a facility for assisting anadromous fish to enter the inlet of a fishway and a method thereof. BACKGROUND

[0002] A fishway is a fish passing structure that helps fish and other aquatic organisms to pass through barriers and migrate freely. How to make fish quickly enter the inlet of a fishway and successfully pass through the fishway is a scientific problem that needs to be solved in current engineering fishways. Physical barriers are usually used to guide fish to bypass the migration barrier in engineering technical fishways, but physical barriers are easy to block and need to be cleaned and maintained regularly, which consumes manpower and financial resources. In contrast, non-physical barriers can attract fish shoals to the inlet of the fishway by stimulating fish behavior. Non-physical barriers include light, underwater sound, bubble curtain, electronic barrier, etc., and have the advantages of low price, no maintenance, and no pollution to the river.

[0003] The invention patent with the application number 201410629415.5 discloses a seamless shore fish guiding device for fish guiding system, which uses physical fish guiding grid and fish guiding technology to realize seamless connection of the fish guiding system on the shore. The invention patent with the application number 201520002572.3 discloses a sound and light integrated fishway ecological fish guiding system, which includes a fish passing channel for connecting the downstream fishway and the upstream fishway. The sound field generating device and the bubble curtain device are arranged on one side of the fish passing channel, and the light attracting lamp is arranged on the other side of the fish passing channel to improve the fish passing efficiency. The invention patent with the application number 202120981757.9 discloses a new fish driving device, which uses sound, light, and bubble curtain composite technology to achieve the driving effect and solves the problem that the traditional bubble curtain interception technology cannot drive fish at night and in low visibility underwater.

[0004] The defects of the prior art are:

[0005] (1) The existing fishway inlet auxiliary technology has poor actual effect, and it is difficult for fish shoals to enter the inlet of the fishway, or the fish shoals entering the inlet of the fishway may stay or turn back at the inlet of the fishway instead of directly entering the inlet of the fishway.

[0006] (2) The fish attracting facilities or devices at the inlet of the fishway are not suitable for a large range of water area and are only used at the inlet of the fishway.

[0007] (3) Most fishway inlet fish attracting devices have low intelligence level, limited attracting effect, and high maintenance cost. SUMMARY

[0008] The application aims at solving the defects of the existing fishway fish attracting technology, improving the probability of the migratory fish discovering and entering the fishway inlet, improving the fishway fish passing effect, and protecting the diversity of aquatic ecological system.

[0009] The technical scheme is that the application adopts a facility for assisting the migratory fish to enter the fishway inlet, which comprises a plurality of fan ring units, an air compressor, a control center, fixed piles and a flow regulating unit.

[0010] The fan ring unit is composed of a fan ring, a fish attracting device, a sensor and a bubble curtain device. The fan ring unit is radially enlarged one by one from the fishway inlet to the downstream of the river. The inner side of the fan ring unit close to the fishway inlet is connected with the bottom plate of the fishway inlet. The fan ring is fixedly arranged on the riverbed and is provided with sand ripples and waterweeds on the surface. The fish attracting device, the sensor and the bubble curtain device are installed on the top of the fan ring. The fish attracting device, the sensor and the bubble curtain device are arranged in an arc shape from the inner side to the outer side of the fan ring in each fan ring unit.

[0011] The fish attracting device is sealed on the top of the fan ring by using transparent material, which does not affect the fish to discover the fish attracting device and prevents the sand and stone from damaging the fish attracting device, thereby prolonging the service life.

[0012] The bubble curtain device is arranged along the outer side of the fan ring. The bubble curtain device is composed of a bubble curtain pipe, a nozzle, an air inlet pipe and a flashing color belt. The bubble curtain pipe is provided with a plurality of micro nozzles. The interval between the adjacent nozzles is not specifically required. The bubble curtain pipe is connected with the outlet of the air compressor through the air inlet pipe. The nozzle is provided with a sand prevention cover plate. The nozzle converts the high pressure air generated by the air compressor into a bubble curtain. The flashing color belt is installed beside the bubble curtain pipe and is used for enhancing the visual effect of the bubble curtain barrier.

[0013] The air compressor is connected with the bubble curtain device through a pipeline. The air compressor is installed on the riverbank.

[0014] The fixed pile is composed of a drill rod, a pipe pile, a ratchet mechanism, a driving gear, a rack and a fixed anchor. The drill rod is driven by a motor to drill a hole in the riverbed. The pipe pile sinks into the hole under the action of the self weight. The top of the pipe pile is provided with a thread for fixing the fan ring unit. The pipe pile is a hollow structure and is provided with a plurality of holes in the side surface. A set of ratchet mechanisms are arranged in the pipe pile at certain intervals along the axial direction. The ratchet mechanism is composed of a ratchet on the outer wall surface of the drill rod and a ratchet wheel on the inner wall surface of the driving gear. The outer wall surface of the drill rod is provided with the ratchets constituting the ratchet mechanism at certain intervals. The inner wall surface of the driving gear is provided with the ratchet wheels constituting the ratchet mechanism. The fixed anchor can be driven to extend out of the pipe pile through the hole in the pipe pile by the counterclockwise rotation of the driving gear. The rack is arranged on the side of the fixed anchor close to the ratchet mechanism. The outer end of the fixed anchor is opposite to the hole in the side surface of the pipe pile.

[0015] The flow regulating unit comprises a flow dividing wall, a hydraulic automatic gate, a water passage and a damping torque hinge. The flow dividing wall is provided with a plurality of water passages, and the hydraulic automatic gate is installed on the water-facing surface of the flow dividing wall through the damping torque hinge.

[0016] The control center is in communication connection with the fish attracting device, the sensor, the bubble curtain device and the air compressor, and controls the operating state of the fish attracting device, the sensor, the bubble curtain device, the flashing color belt and the air compressor.

[0017] In the present application, the fish attracting device comprises a fish attracting lamp belt and an electromagnetic resonator.

[0018] In the present application, the upper and lower surfaces of the fixed anchor are in close contact with the upper and lower edges of the hole of the pipe pile, and the outer end of the fixed anchor is in the shape of a sector. The gear rack of the fixed anchor is in engagement with the driving gear.

[0019] In the present application, when the drill rod rotates clockwise, the pawl hinged to the outer wall of the drill rod slides through the ratchet wheel, and the driving gear and the fixed anchor remain unchanged in the pipe pile. When the drill rod and the pipe pile reach the maximum depth, the drill rod is rotated counterclockwise to make the pawl of each set of ratchet mechanism clamp the ratchet wheel of the corresponding ratchet mechanism, and drive the corresponding driving gear to rotate counterclockwise.

[0020] In the present application, the hydraulic automatic gate rotates to adjust the opening angle under the action of water force through the damping torque hinge.

[0021] Preferably, the sensor is installed on the backwater side of the fish attracting device and the water-facing side of the bubble curtain device, and is closer to the fish attracting device.

[0022] Preferably, the nozzles are all micro nozzles, and the nozzles are provided with sandproof cover plates, and the rotation shafts of the cover plates are located on the water-facing side.

[0023] Preferably, the number of the fan ring units is determined according to the width of the river channel near the downstream of the fishway inlet, and the curvature of the fan ring is determined according to the number of the fan ring units and the bending degree of the river channel.

[0024] Preferably, the fish attracting device and the sensor are arranged in a ring shape according to the shape of the fan ring.

[0025] Preferably, the bubble curtain device is arranged in a necked U shape along the edge of the fan ring unit.

[0026] As a preference, the distance between each set of said ratchet mechanism is equal to the distance between each set of fixed anchors arranged along the axial direction of the pipe pile.

[0027] As a preference, each set of fixed anchors is composed of three said fixed anchors, and the included angle between the straight handles of the fixed anchors is 60°.

[0028] As a preference, the outer end structure of said fixed anchor is a fan shape, which can increase the force bearing area of the fixed anchor and the riverbed sediment.

[0029] As a preference, each set of ratchet mechanism, corresponding driving gear and fixed anchor are located in the same plane perpendicular to the drill pipe and the pipe pile.

[0030] As a preference, said fish-attracting device is sealed in the transparent material protruding on the top of the fan ring, and the transparent material adopts transparent resin.

[0031] As a preference, said fan ring surface is provided with small holes, which can ensure material exchange between the fan ring and the riverbed, and the fan ring surface is arranged with sediment and water grass imitating the riverbed. The sediment can increase the riverbed roughness and reduce the flow rate. The water grass can improve the ecological effect.

[0032] The technical scheme provided by the present application further includes a running method of the facility for assisting the migration fish to enter the fishway inlet, including the following steps:

[0033] ①Firstly, the control center sends an instruction to open the fish-attracting device and the inductor of the fan ring unit of the outermost ring downstream, to attract and induct the migration fish;

[0034] ②When the inductor of the fan ring unit of the outermost ring senses the signal of a large number of fish passing through, the signal is transmitted to the control center, the control center sends an opening signal instruction to the air compressor and the flashing color band of the fan ring unit of the outermost ring, the air compressor starts to work and transports high-pressure air to the bubble curtain pipe of the fan ring unit of the outermost ring through the air inlet pipe of the fan ring unit of the outermost ring, and the high-pressure air forms a bubble curtain barrier from the nozzle in the water; at this time, the control center opens the fish-attracting device and the inductor of the fan ring unit of the inner ring adjacent to the fan ring unit of the outermost ring, to induce the migration fish to enter the fan ring unit of the inner ring;

[0035] ③When the inductor of the fan ring unit of the inner ring senses the signal of a large number of fish passing through, the signal is transmitted to the control center, the control center sends an opening signal instruction to the air compressor and the flashing color band of the fan ring unit of the inner ring, the air compressor starts to work and transports high-pressure air to the bubble curtain pipe of the fan ring unit of the inner ring through the air inlet pipe of the fan ring unit of the inner ring, and the high-pressure air sprays from the nozzle in the water to form a bubble curtain barrier; at this time, the control center opens the fish attracting device and the inductor of the fan ring unit of the inner ring adjacent to the fan ring unit of the inner ring, and induces the migratory fish to enter the fan ring unit of the inner ring;

[0036] ④When the inductor of the fan ring unit of the inner ring senses the signal of a large number of fish passing through, the signal is transmitted to the control center, the control center sends an opening signal instruction to the air compressor and the flashing color band of the fan ring unit of the inner ring, the air compressor starts to work and transports high-pressure air to the bubble curtain pipe of the fan ring unit of the inner ring through the air inlet pipe of the fan ring unit of the inner ring, and the high-pressure air sprays from the nozzle in the water to form a bubble curtain barrier; at this time, the control center opens the fish attracting device and the inductor of the fan ring unit of the inner ring adjacent to the fan ring unit of the inner ring, and induces the migratory fish to enter the fan ring unit of the inner ring;

[0037] ⑤At the same time that the air inlet pipe of the inner ring transports high-pressure air to the bubble curtain pipe of the fan ring unit of the inner ring to form a bubble curtain barrier, the control center sends a closing signal instruction to the air compressor and the flashing color band of the fan ring unit of the outermost ring, the air inlet pipe of the outermost ring stops air intake, and the flashing color band stops emitting light;

[0038] When the inductors of the fan ring units of the inner ring and the inner ring adjacent to the fan ring unit of the outermost ring cannot sense the signal of fish passing through, the control center opens the fish attracting device and the inductor of the fan ring unit of the outermost ring again to start attracting and sensing fish downstream of the river channel;

[0039] ⑥In the above-mentioned manner, a plurality of fan ring units run one by one from the downstream of the river channel to the direction of the entrance of the fishway until the fan ring unit connected with the entrance of the fishway is completed, that is, a running process of assisting migratory fish to enter the entrance of the fishway is realized;

[0040] ⑦Repeat steps ①-⑥, and fish batches enter the fishway in a cycle.

[0041] According to the above-mentioned corresponding steps, the purpose of continuously assisting migratory fish to enter the entrance of the fishway is realized.

[0042] Beneficial effects: the facility and method for assisting the migration of fish into the fishway entrance of the present application have the following beneficial effects:

[0043] (1) The fish population enters the radiation range of the facility for assisting the migration of fish into the fishway entrance, the fish attracting device stimulates the sensory system of fish using sound and light, which can attract the fish population; after the inductor identifies the approach of the fish population, the control center starts the bubble curtain device to form a bubble curtain barrier, which can block the fish population from leaving.

[0044] (2) The fan ring unit of the present application expands radially from the fishway entrance to the river, each fan ring unit has the functions of attracting and blocking, thereby forming the effect of attracting and driving fish, which can attract and drive the fish population to the fishway entrance from a larger range of the river.

[0045] (3) The high-pressure air generated by the air compressor of the present application is converted into a bubble curtain, and the bubble curtain barrier formed can block the fish population entering the fan ring unit from leaving, while increasing the dissolved oxygen in the river and improving the water quality of the water body downstream of the fishway entrance. The area with sufficient dissolved oxygen is more likely to attract fish population.

[0046] (4) The fish attracting device and inductor of the present application are arranged in a ring shape according to the shape of the fan ring, which can attract and sense the fish population from different directions.

[0047] (5) The nozzles of the present application are all micro nozzles, which can ensure that the air output of each nozzle is equivalent, thereby forming a tight and uniform bubble curtain; the nozzles are provided with sand prevention cover plates, and the rotation shaft of the cover plate is located on the water side, which can ensure that the cover plate is sealed under the condition that the air compressor is closed, preventing the nozzles from being blocked by sand.

[0048] (6) The upper and lower surfaces of the fixed anchor of the present application are in close contact with the upper and lower edges of the hole of the pipe pile, which can enhance the stability of the pipe pile.

[0049] (7) The ratchet mechanism of the present application does not affect the drilling process of the drill rod, and can slightly rotate counterclockwise to open the fixed anchor with the help of the drill rod.

[0050] (8) The facility for assisting the migration of fish into the fishway entrance of the present application is uniformly coordinated and controlled by the control center, which can realize the upstream migration of fish population batch after batch, has high intelligence, and is conducive to promoting the progress of intelligent fishway technology. BRIEF DESCRIPTION OF DRAWINGS

[0051] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0052] Figure 1 The present invention provides an arrangement scheme for facilities that assist migratory fish in entering the fishway entrance;

[0053] Figure 2 This is a schematic diagram of the overall structure of the facility for assisting migratory fish to enter the fishway entrance according to the present invention;

[0054] Figure 3 This is a schematic diagram of the fan ring unit of the present invention;

[0055] Figure 4 This is a schematic diagram of the initial state of the fixed pile of the present invention;

[0056] Figure 5 This is a schematic diagram of the fixed pile of the present invention after it has been fixed.

[0057] Figure 6 This is a schematic diagram illustrating the driving relationship between the pawl, ratchet, drive gear, and fixed anchor of the present invention.

[0058] Figure 7 for Figure 6 A schematic diagram showing the fixed anchor after it has been opened;

[0059] Figure 8 This is a schematic diagram of a single fixed anchor of the present invention;

[0060] Figure 9 This is a schematic diagram of the ratchet mechanism of the present invention;

[0061] Figure 10 This is a schematic diagram of the flow regulation unit of the present invention;

[0062] Figure 11 This is a schematic diagram of the opening and closing state of the hydraulic automatic gate of the flow regulation unit of the present invention.

[0063] In the figure: 1-fan ring unit, 11-fan ring, 12-fish attracting device, 121-fish attracting light belt, 122-electromagnetic resonator, 13-inductor, 14-bubble curtain device, 141-bubble curtain pipe, 142-nozzle, 143-air inlet pipe, 144-flashing color belt, 2-air compressor, 3-control center, 4-fixing pile, 41-drill rod, 42-pipe pile, 43-ratchet mechanism, 44-driving gear, 45-rack, 46-fixing anchor, 47-pawl, 48-ratchet, 5-flow regulating unit, 51-diversion wall, 52-hydraulic automatic gate, 53-passing water channel, 54-damping torque hinge. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be further described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0065] In the description of the present application, the terms "inner ring", "inner second ring" and "inner third ring" are only for description purposes, and cannot be understood as indicating or implying relative importance.

[0066] Embodiment 1

[0067] The present embodiment provides a facility for assisting migratory fish to enter the fishway inlet.

[0068] In one embodiment, as shown in Figures 1-11 The facility for assisting migratory fish to enter the fishway inlet includes fan ring units 1, an air compressor 2, a control center 3, fixing piles 4 and a flow regulating unit 5.

[0069] Each fan ring unit 1 is composed of a fan ring 11, a fish attracting device 12, an inductor 13 and a bubble curtain device 14. The fan ring units 1 gradually expand radially from the fishway inlet to the river. The inner side of the fan ring unit 1 near the fishway inlet is connected to the bottom plate of the fishway inlet. The fan ring 11 is fixedly arranged on the riverbed. The fish attracting device 12, the inductor 13 and the bubble curtain device 14 are installed on the top of the fan ring 11. The bubble curtain device 14 is arranged along the outer side of the fan ring 11. The surface of the fan ring 11 is arranged with simulated riverbed silt and waterweed. The top of the fan ring 11 is sealed with a convex acrylate plastic to attract the fish attracting device 12. The air compressor 2 is connected to the bubble curtain device 14 through a pipeline. The air compressor 2 is installed on the riverbank.

[0070] The fixed pile 4 is composed of a drill rod 41, a pipe pile 42, a ratchet mechanism 43, a driving gear 44, a rack 45 and a fixed anchor 46. The drill rod 41 is driven by a motor to drill a hole in the riverbed. The pipe pile 42 sinks into the hole under the action of gravity. The pipe pile 42 has a hollow structure and a plurality of holes on the side surface. The top of the pipe pile 42 is provided with a thread. The pipe pile 42 is fixed to the fan ring unit 1 through a large nut. The outer wall surface of the drill rod 41 is provided with a ratchet pawl 47 constituting the ratchet mechanism 43 at intervals. The inner wall surface of the driving gear 44 is provided with a ratchet wheel 48 constituting the ratchet mechanism 43. The fixed anchor 46 is provided with the rack 45 on the side close to the ratchet mechanism 43. The rack 45 is driven to rotate counterclockwise by the driving gear 44 to push the fixed anchor 46 out of the hole in the side surface of the pipe pile 42 into the river sediment.

[0071] The flow regulating unit 5 includes a flow dividing wall 51, a hydraulic automatic gate 52, a water passage 53 and a damping torque hinge 54. The flow dividing wall 51 is provided with a plurality of water passages 53. The hydraulic automatic gate 52 is installed on the water-facing surface of the flow dividing wall 51. The width of the hydraulic automatic gate 52 is slightly larger than that of the water passage 53. The hydraulic automatic gate 52 is fixed to the flow dividing wall 51 through the damping torque hinge 54. The damping torque hinge 54 can control the opening angle of the hydraulic automatic gate 52 under the action of water force.

[0072] The control center 3 is in communication connection with the fish attracting device 12, the sensor 13, the bubble curtain device 14 and the air compressor 2, and controls the operating state of the fish attracting device 12, the sensor 13, the bubble curtain device 14, the flashing color belt 144 and the air compressor 2.

[0073] The bubble curtain device 14 is composed of a bubble curtain pipe 141, a nozzle 142, an air inlet pipe 143 and a flashing color belt 144. The bubble curtain pipe 141 is arranged with a plurality of micro nozzles 142. The distance between adjacent nozzles 142 is not specifically required. The bubble curtain pipe 141 is connected to the outlet of the air compressor 2 through the air inlet pipe 143. The nozzle 142 is provided with a sand-proof cover plate. The nozzle 142 converts the high-pressure air generated by the air compressor 2 into a bubble curtain. The flashing color belt 144 is installed beside the bubble curtain pipe 141 to enhance the visual effect of the bubble curtain barrier. The fish attracting device 12 includes a fish attracting light belt 121 and an electromagnetic resonator 122. The fish attracting light belt 121 is composed of a band-shaped LED fish attracting light with changing light color. The electromagnetic resonator 122 simulates the sound of fish by adjusting the electromagnetic frequency.

[0074] When the drill rod 41 rotates clockwise, the ratchet pawl 47 hinged to the outer wall of the drill rod 41 slides through the ratchet wheel 48. The driving gear 44 and the fixed anchor 46 remain in the original state in the pipe pile 42. After the drill rod 41 and the pipe pile 42 reach the maximum depth, the drill rod 41 is rotated counterclockwise to make the ratchet pawl 47 of each set of ratchet mechanism 43 clamp the ratchet wheel 48 of the corresponding ratchet mechanism 43, and drive the corresponding driving gear 44 to rotate counterclockwise. The driving gear 44 drives the rack 45 to push the fixed anchor 46 out of the hole of the pipe pile 42.

[0075] In the embodiment, the size of the space occupied by the sector ring unit 1 at the fishway entrance is not specifically limited, and as an implementation form, the sector ring unit 1 occupies the entire space of the fishway entrance section and is connected with the bottom plate at the fishway entrance.

[0076] In the embodiment, the number of the sector ring units 1 is not specifically limited, and can be determined according to the width of the river where the fishway is located and the width of the fishway entrance, as long as the fish can pass through the sector ring unit 1 smoothly.

[0077] In the embodiment, the arrangement position and number of the fixing piles 4 are not specifically limited, and as long as the sector ring unit 1 can be fixed, the fixing piles 4 can be arranged around the sector ring unit 1 or inside the sector ring unit 1, and as a specific implementation form, refer to Figure 1 , the fixing piles 4 are arranged at four corners of the sector ring unit 1 to fix the sector ring unit 1 and prevent the sector ring unit 1 from moving due to the water flow, thereby improving the stability of the overall facility.

[0078] In the embodiment, the number and arrangement mode of the fixing anchors 46 are not specifically limited, and as a specific implementation form, refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the fixing anchors 46 are arranged in groups, each group of the fixing anchors 46 is arranged on the same plane around the drill pipe 41, the fixing anchors are uniformly distributed, and the fixing anchors 46 in adjacent layers are arranged in parallel; as another specific implementation form, the fixing anchors 46 are arranged in a ring shape with the outer wall of the drill pipe 41 as a reference, and the fixing anchors 46 in adjacent layers are arranged in a staggered manner.

[0079] In the embodiment, the shape of the fixing anchor 46 is not specifically limited, and as an implementation form, refer to Figure 8 , the fixing anchor 46 is provided with a rack 45 at one end close to the driving gear 44, and the protruding end of the fixing anchor 46 is in a sector shape, which can increase the contact area and frictional resistance between the fixing anchor 46 and the riverbed sediment, reduce the scouring effect of water and sediment movement on the fixing pile 4, and maintain long-term stability. Refer to Figure 5 , the upper and lower surfaces of the fixing anchor 46 are attached to the upper and lower edges of the hole of the pipe pile 42, the outer end of the fixing anchor 46 is in a sector shape, and the rack 45 of the fixing anchor 46 is engaged with the driving gear 44.

[0080] In the embodiment, as a specific implementation form, refer to Figure 9When the drill rod 41 rotates clockwise to drill into the riverbed, the drill rod 41 drives the pawl 47 of the outer wall surface ratchet mechanism 43 to rotate clockwise, and due to the special structure of the ratchet mechanism 43, the pawl 47 slides past the ratchet 48, and the ratchet 48 of the inner wall surface ratchet mechanism 43 of the drive gear 44 does not rotate, and the drive gear 44 and the fixed anchor 46 remain in the original state; when the drill rod rotates counterclockwise, the drill rod 41 drives the pawl 47 of the outer wall surface ratchet mechanism 43 to rotate counterclockwise, so that the pawl 47 clamps the ratchet 48 of the inner wall surface ratchet mechanism 43 of the drive gear 44 to drive the corresponding drive gear 44 to rotate counterclockwise, and the drive gear 44 drives the rack 45 to push the fixed anchor 46 out of the hole of the pipe pile 42.

[0081] In the embodiment, the inclination angle of the flow splitting wall 51 is not specifically limited, and can occupy the entire space of the water surface of the facility to realize the flow regulation of the water flow in the facility.

[0082] In the embodiment, the model of the damping torque hinge 54 is not specifically limited, and the angle of the hydraulic automatic gate 52 can be automatically adjusted by means of water power to control the size of the water flow through the water passage 53.

[0083] In the embodiment, the connection mode of the electromagnetic resonator 122 and the fan ring 11 is not specifically limited, and the number of electromagnetic resonators 122 gradually decreases and the spacing gradually decreases from the fan ring unit 1 of the outermost ring to the fan ring unit 1 connected to the fishway inlet.

[0084] In the embodiment, the arrangement spacing of the fish attracting device 12, the inductor 13 and the bubble curtain device 14 in the fan ring unit 1 is not specifically limited, and as an embodiment, the fish attracting device 12 is arranged along the inner side of the fan ring 11, the bubble curtain device 14 is arranged along the outer side of the fan ring 11, and the inductor 13 is arranged between the fish attracting device 12 and the bubble curtain device 14 and closer to the fish attracting device 12.

[0085] In the embodiment, there is a certain distance between the fish attracting device 12 and the bubble curtain device 14, which can ensure that the fish school is not disturbed.

[0086] In the embodiment, as a specific embodiment, the four fan ring units 1 gradually decrease from the downstream to the fishway inlet, and the gradually decreasing fan ring units 1 can improve the probability of guiding the fish school into the fishway inlet. The fan ring unit 1 of the outermost ring is located at the downstream position, the fan ring unit 1 of the inner ring, the fan ring unit 1 of the inner second ring and the fan ring unit 1 of the inner third ring are arranged in sequence from the downstream to the fishway inlet, and the fan ring 11 of the fan ring unit 1 of the inner third ring is connected to the bottom plate of the fishway inlet.

[0087] Embodiment 2:

[0088] The embodiment provides a running method of the facility for assisting the migration fish to enter the fishway inlet, and the running method comprises the following steps:

[0089] The embodiment comprises the following steps:

[0090] S1. First, the control center 3 sends an instruction to open the fish-attracting device 12 and the inductor 13 of the downstream outermost ring of the sector ring unit 1, so as to attract and induct the migration fish.

[0091] S2. When the inductor 13 of the outermost ring of the sector ring unit 1 senses a signal that a large number of fish pass, the signal is transmitted to the control center 3, the control center 3 sends an opening signal instruction to the air compressor 2 and the flashing color band 144 of the outermost ring of the sector ring unit 1, the air compressor 2 starts to work and transports high-pressure air to the bubble curtain pipe 141 of the outermost ring of the sector ring unit 1 through the air inlet pipe 143 of the outermost ring of the sector ring unit 1, the high-pressure air sprays from the nozzle 142 in water to form a bubble curtain barrier; at this time, the control center 3 opens the fish-attracting device 12 and the inductor 13 of the inner first ring of the sector ring unit 1 adjacent to the outermost ring of the sector ring unit 1, so as to induce the migration fish to enter the inner first ring of the sector ring unit 1.

[0092] S3. When the inductor 13 of the inner first ring of the sector ring unit 1 senses a signal that a large number of fish pass, the signal is transmitted to the control center 3, the control center 3 sends an opening signal instruction to the air compressor 2 and the flashing color band 144 of the inner first ring of the sector ring unit 1, the air compressor 2 starts to work and transports high-pressure air to the bubble curtain pipe 141 of the inner first ring of the sector ring unit 1 through the air inlet pipe 143 of the inner first ring of the sector ring unit 1, the high-pressure air sprays from the nozzle 142 in water to form a bubble curtain barrier; at this time, the control center 3 opens the fish-attracting device 12 and the inductor 13 of the inner second ring of the sector ring unit 1 adjacent to the inner first ring of the sector ring unit 1, so as to induce the migration fish to enter the inner second ring of the sector ring unit 1.

[0093] S4. When the inductor 13 of the inner second ring of the sector ring unit 1 senses a signal that a large number of fish pass, the signal is transmitted to the control center 3, the control center 3 sends an opening signal instruction to the air compressor 2 and the flashing color band 144 of the inner second ring of the sector ring unit 1, the air compressor 2 starts to work and transports high-pressure air to the bubble curtain pipe 141 of the inner second ring of the sector ring unit 1 through the air inlet pipe 143 of the inner second ring of the sector ring unit 1, the high-pressure air sprays from the nozzle 142 in water to form a bubble curtain barrier; at this time, the control center 3 opens the fish-attracting device 12 and the inductor 13 of the inner third ring of the sector ring unit 1 adjacent to the inner second ring of the sector ring unit 1, so as to induce the migration fish to enter the inner third ring of the sector ring unit 1.

[0094] S5. In the inner ring of the fan ring unit 1, the air inlet pipe 143 transports high-pressure air to the bubble curtain pipe 141 of the inner ring of the fan ring unit 1 to form a bubble curtain barrier, while the control center 3 sends a closing signal instruction to the air compressor 2 and the flash color belt 144 of the outermost ring of the fan ring unit 1, and the air inlet pipe 143 of the outermost ring stops air intake, and the flash color belt 144 stops emitting light; in the inner two rings of the fan ring unit 1, the air inlet pipe 143 transports high-pressure air to the bubble curtain pipe 141 of the inner two rings of the fan ring unit 1 to form a bubble curtain barrier, while the control center 3 sends a closing signal instruction to the air compressor 2 and the flash color belt 144 of the inner ring of the fan ring unit 1, and the air inlet pipe 143 of the inner ring stops air intake, and the flash color belt 144 stops emitting light.

[0095] When the inductors 13 of the fan ring units 1 in the inner ring and the inner two rings adjacent to the fan ring unit 1 in the outermost ring cannot sense the signal of the fish passing through, the control center 3 starts the fish attracting device 12 and the inductor 13 of the fan ring unit 1 in the outermost ring again, and starts to attract and sense the fish downstream of the river channel.

[0096] S6. In the above-mentioned S1-S5 manner, several fan ring units 1 run one by one from the downstream of the river channel to the direction of the fishway entrance until the fan ring unit 1 connected with the fishway entrance is completed, that is, a running process of assisting the migratory fish to enter the fishway entrance is realized.

[0097] S7. Repeat steps S1-S6, and the fish population circulates into the fishway one batch after another.

[0098] According to the above-mentioned corresponding steps, the purpose of continuously assisting the migratory fish to enter the fishway entrance can be realized.

[0099] Specifically, during the planning and construction of the fishway, the scale of the facility for assisting the migratory fish to enter the fishway entrance is determined according to the geological conditions, hydrological conditions, meteorological characteristics, and the river channel shape, river width, and fish species at the fishway entrance. The above-mentioned running method is only a specific implementation manner.

[0100] Obviously, the above-mentioned embodiments are only examples for clear illustration, and are not a limitation on the implementation manners. It is obvious for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above-mentioned description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application, and any figure reference in the claims should not be regarded as limiting the involved claims.

[0101] Furthermore, it is to be understood that the application can be carried out by specifically different embodiments, and equivalents thereof, without departing from the scope of the application or the ambit of the claims.

Claims

1. A facility for assisting migratory fish to enter the fishway entrance, comprising a plurality of fan ring units (1), an air compressor (2), a control center (3), fixed piles (4) and a flow regulating unit (5), characterized in that: the fan ring unit (1) is composed of a fan ring (11), a fish attracting device (12), a sensor (13) and a bubble curtain device (14); the fan ring unit (1) is radially enlarged one by one from the fishway entrance downstream of the river, the inner side of the fan ring unit (1) near the fishway entrance is connected with the fishway entrance bottom plate, the fan ring (11) is fixedly arranged on the riverbed, the surface of the fan ring (11) is provided with sand ripples and water plants simulating the riverbed, the top of the fan ring (11) is provided with the fish attracting device (12), the sensor (13) and the bubble curtain device (14), the fish attracting device (12) is sealed on the top of the fan ring (11) by transparent material; the bubble curtain device (14) is arranged along the outside of the fan ring (11); the air compressor (2) is connected with the bubble curtain device (14) through a pipeline, and the air compressor (2) is installed on the riverbank; the fixed pile (4) is composed of a drill rod (41), a pipe pile (42), a ratchet mechanism (43), a driving gear (44), a rack (45) and a fixed anchor (46); the drill rod (41) is driven by a motor to drill holes in the riverbed, the pipe pile (42) sinks into the drilled hole under the action of its own weight, the top of the pipe pile (42) is provided with a thread for fixing the fan ring unit (1), the pipe pile (42) is a hollow structure and is provided with a plurality of holes on the side surface, and a set of ratchet mechanisms (43) are arranged in the pipe pile (42) along the axial direction at certain intervals; the ratchet mechanism (43) is composed of a ratchet pawl (47) on the outer wall surface of the drill rod (41) and a ratchet wheel (48) on the inner wall surface of the driving gear (44); the outer wall surface of the drill rod (41) is provided with the ratchet pawl (47) constituting the ratchet mechanism (43) at certain intervals; the inner wall surface of the driving gear (44) is provided with the ratchet wheel (48) constituting the ratchet mechanism (43); the fixed anchor (46) can be driven to extend out of the pipe pile (42) by rotating the driving gear (44) counterclockwise, and the fixed anchor (46) is provided with the rack (45) on the side close to the ratchet mechanism (43); the outer end of the fixed anchor (46) is opposite to the hole on the side surface of the pipe pile (42); the flow regulating unit (5) comprises a flow dividing wall (51), a hydraulic automatic gate (52), a water passage (53) and a damping torque hinge (54); a plurality of water passages (53) are distributed on the flow dividing wall (51), the hydraulic automatic gate (52) is installed on the water-facing surface of the flow dividing wall (51) through the damping torque hinge (54); the width of the hydraulic automatic gate (52) is greater than that of the water passage (53); the control center (3) is in communication connection with the fish attracting device (12), the sensor (13), the bubble curtain device (14) and the air compressor (2), and controls the operating state of the fish attracting device (12), the sensor (13), the bubble curtain device (14), the flashing color belt (144) and the air compressor (2).

2. A facility for assisting migratory fish to enter the entrance of a fishway according to claim 1, characterized in that: The bubble curtain device (14) is composed of a bubble curtain pipe (141), a nozzle (142), an air inlet pipe (143) and a flashing color belt (144); the bubble curtain pipe (141) is provided with a plurality of micro nozzles (142), the interval between adjacent nozzles (142) is not specifically required, the bubble curtain pipe (141) is connected with the outlet of the air compressor (2) through the air inlet pipe (143); the nozzle (142) is provided with a sand prevention cover plate, and the nozzle (142) converts the high-pressure air generated by the air compressor (2) into a bubble curtain; the flashing color belt (144) is installed beside the bubble curtain pipe (141) and is used for enhancing the visual effect of the bubble curtain barrier.

3. A facility for assisting migratory fish to enter the entrance of a fishway according to claim 1, characterized in that: The fish attracting device (12) comprises a fish attracting lamp belt (121) and an electromagnetic resonator (122), the fish attracting lamp belt (121) is composed of a belt-shaped LED fish attracting lamp capable of changing light color, and the electromagnetic resonator (122) simulates the sound emitted by fish by adjusting the electromagnetic frequency.

4. A facility for assisting migratory fish to enter the inlet of a fishway according to claim 1, characterized in that: The upper and lower surfaces of the fixed anchor (46) are attached to the upper and lower edges of the hole of the pipe pile (42), and the outer end of the fixed anchor (46) is a fan shape; the rack (45) of the fixed anchor (46) is just engaged with the driving gear (44).

5. A facility for assisting migratory fish to enter the inlet of a fishway according to claim 1, characterized in that: When the drill rod (41) rotates clockwise, the pawl (47) hinged to the outer wall of the drill rod (41) slides through the ratchet wheel (48), the driving gear (44) and the fixed anchor (46) remain unchanged in the pipe pile (42); after the drill rod (41) and the pipe pile (42) reach the maximum depth, the drill rod (41) is rotated counterclockwise, so that the pawl (47) of each set of ratchet mechanism (43) is clamped to the ratchet wheel (48) of the corresponding ratchet mechanism (43), and the corresponding driving gear (44) is driven to rotate counterclockwise, and the driving gear (44) drives the rack (45) to push the fixed anchor (46) out of the hole of the pipe pile (42).

6. A facility for assisting migratory fish to enter the entrance of a fishway according to claim 1, characterized in that: The hydraulic automatic gate (52) rotates to adjust the opening angle under the action of water force through the damping torque hinge (54).

7. A method of operating a facility for assisting migratory fish to enter the intake of a fish pass according to any one of claims 1 to 6, characterised in that The method comprises the following steps: ①Firstly, the control center (3) sends an instruction to open the fish attracting device (12) and the inductor (13) of the fan ring unit (1) of the outermost ring to attract and induct the migratory fish; ②When the inductor (13) of the fan ring unit (1) of the outermost ring senses a signal that a large number of fish pass, the signal is transmitted to the control center (3), the control center (3) sends an opening signal instruction to the air compressor (2) and the flashing color belt (144) of the fan ring unit (1) of the outermost ring, the air compressor (2) starts to work and delivers high-pressure air to the bubble curtain pipe (141) of the fan ring unit (1) of the outermost ring through the air inlet pipe (143) of the fan ring unit (1) of the outermost ring, and the high-pressure air sprays out from the nozzle (142) in water to form a bubble curtain barrier; at this time, the control center (3) opens the fish attracting device (12) and the inductor (13) of the fan ring unit (1) of the inner ring adjacent to the fan ring unit (1) of the outermost ring to induce the migratory fish into the fan ring unit (1) of the inner ring; ③When the inductor (13) of the fan ring unit (1) of the inner ring senses the signal of a large number of fish passing through, the signal is transmitted to the control center (3), and the control center (3) sends an opening signal instruction to the air compressor (2) and the flashing color belt (144) of the fan ring unit (1) of the inner ring. The air compressor (2) starts to work and transports high-pressure air to the bubble curtain pipe (141) of the fan ring unit (1) of the inner ring through the air inlet pipe (143) of the fan ring unit (1) of the inner ring. The high-pressure air sprays from the nozzle (142) in the water to form a bubble curtain barrier. At this time, the fish attracting device (12) and the inductor (13) of the fan ring unit (1) of the inner second ring adjacent to the fan ring unit (1) of the inner ring are opened by the control center (3), so as to induce the migratory fish into the fan ring unit (1) of the inner second ring. ④When the inductor (13) of the fan ring unit (1) of the inner second ring senses the signal of a large number of fish passing through, the signal is transmitted to the control center (3), and the control center (3) sends an opening signal instruction to the air compressor (2) and the flashing color belt (144) of the fan ring unit (1) of the inner second ring. The air compressor (2) starts to work and transports high-pressure air to the bubble curtain pipe (141) of the fan ring unit (1) of the inner second ring through the air inlet pipe (143) of the fan ring unit (1) of the inner second ring. The high-pressure air sprays from the nozzle (142) in the water to form a bubble curtain barrier. At this time, the fish attracting device (12) and the inductor (13) of the fan ring unit (1) of the inner third ring adjacent to the fan ring unit (1) of the inner second ring are opened by the control center (3), so as to induce the migratory fish into the fan ring unit (1) of the inner third ring. ⑤When the air inlet pipe (143) of the fan ring unit (1) of the inner ring transports high-pressure air to the bubble curtain pipe (141) of the fan ring unit (1) of the inner ring to form a bubble curtain barrier, the control center (3) sends a closing signal instruction to the air compressor (2) and the flashing color belt (144) of the fan ring unit (1) of the outermost ring. The air inlet pipe (143) of the outermost ring stops air intake, and the flashing color belt (144) stops emitting light. When the air inlet pipe (143) of the fan ring unit (1) of the inner second ring transports high-pressure air to the bubble curtain pipe (141) of the fan ring unit (1) of the inner second ring to form a bubble curtain barrier, the control center (3) sends a closing signal instruction to the air compressor (2) and the flashing color belt (144) of the fan ring unit (1) of the inner ring. The air inlet pipe (143) of the inner ring stops air intake, and the flashing color belt (144) stops emitting light. When the inductors (13) of the fan ring units (1) of the inner ring and the inner second ring adjacent to the fan ring unit (1) of the outermost ring cannot sense the signal of fish passing through, the control center (3) opens the fish attracting device (12) and the inductor (13) of the fan ring unit (1) of the outermost ring again to start attracting and sensing the fish in the downstream of the river. ⑥In the above-mentioned mode of ①-⑤, the several fan ring units (1) run one by one from the downstream of the river channel to the direction of the fishway entrance until the fan ring unit (1) connected with the fishway entrance is run completely, that is, an operation process of assisting the anadromous fish to enter the fishway entrance is realized; ⑦Repeat steps ①-⑥, and the fish school enters the fishway in batches; According to the above-mentioned corresponding steps, the purpose of continuously assisting the anadromous fish to enter the fishway entrance can be realized.

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