Fish passing facility for canal hub ship lock

Abstract

The invention relates to the technical field of water conservancy projects, and discloses a canal hub ship lock fish passing facility which comprises a ship lock body structure, a mounting base is fixedly connected to the downstream side of the ship lock body structure, and a fish passing mechanism is integrated on the outer wall of the mounting base in a welding mode. The fish passing mechanism comprises a rotating vortex induction channel and an air bag suspension type fish passing platform, and an energy conversion fishway is arranged on the inner wall of the ship lock body structure. And the turbulent flow characteristics of the natural stream can be accurately simulated through the rotating vortex induction channel. The water flow sensor monitors the flow speed in real time, the edge calculation terminal accurately controls the rotating speed and the inclination angle of the rotatable guide vanes according to a fish flow taxis model and algorithm, vortex with the specific diameter and flow speed distribution is formed, fishes are attracted to enter a channel in the tangential direction, and the success rate that the fishes are guided to pass through a ship lock downstream inlet is increased; the problem that the ship lock hinders fish migration is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy projects, in particular to a canal hub ship lock fish passing facility. Background Art

[0002] In modern water conservancy project construction, canal hub locks, as important navigation facilities, have greatly promoted the development of water transportation. However, with the construction of water conservancy projects, the impact of locks on the ecological environment, especially fish migration, has gradually become a key challenge.

[0003] Traditional canal hub locks primarily focus on accommodating ship navigation, but their design and construction often fail to fully consider the migratory characteristics of fish. Large water level differences upstream and downstream of the locks, coupled with changes in water velocity and flow patterns, create an environment unfavorable for fish migration. While some fish-passing facilities exist, such as sloped fishways and vertical fish risers, these often fail to operate effectively in turbulent waters or when water levels fluctuate significantly. Their adaptability also makes it difficult to provide a stable migratory path for fish.

[0004] Furthermore, some traditional fish passages are not optimized for varying hydrological conditions, seasonal variations, and the physiological characteristics of fish, resulting in their inability to meet the needs of fish passing through locks in practice. For example, fish lack a clear path to navigate when approaching locks, making them prone to becoming disoriented or even wandering into dangerous areas, resulting in injury or death. With changes in the ecological environment and the evolving behavior of fish, many existing fish passages are unable to adjust their operating parameters in a timely manner, gradually failing to meet the needs of modern locks and ecological protection. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a canal hub lock fish passage facility, which solves the problem that the existing fish passage facilities cannot effectively provide a stable and safe migration channel for fish under conditions such as turbulent water flow, large water level fluctuations and insufficient adaptability.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a canal hub ship lock fish passing facility, including a ship lock main structure, a mounting base fixedly connected to the downstream side of the ship lock main structure, an outer wall of the mounting base integrated with a fish passing mechanism by welding, the fish passing mechanism including a rotating vortex induction channel and an airbag suspended fish passing platform, and an energy conversion fishway provided on the inner wall of the ship lock main structure.

[0007] Preferably, the rotating vortex inducing channel includes a rotatable guide vane, a drive system and a water flow sensor. The rotatable guide vane is horizontally installed at the downstream inlet of the lock main structure through a central axis. Both ends of the central axis are fixed to the concrete base of the lock main structure through flanges. The drive system includes a servo motor and a water flow sensor. The output end of the servo motor is fixedly connected to a gear set, and the gear set is meshed with the central axis. The water flow sensor is a Doppler flow meter, and the water flow sensor is fixed to the bottom of the rotating vortex inducing channel by bolts.

[0008] Preferably, the surface of the rotatable guide vane is coated with a polyurethane anti-biological attachment coating, the inclination angle of the rotatable guide vane is adjustable in the range of 0° to 45°, and the gear set is a planetary gear reduction mechanism.

[0009] Preferably, the airbag suspended fish-passing platform includes an airbag unit, and multiple airbag units are interconnected by silicone bellows. The outer wall of the airbag unit is sequentially provided with a PVC mesh cloth outer layer and a TPU airtight layer. A counterweight chain and a nylon cable are welded to the bottom of the airbag suspended fish-passing platform. One end of the ground anchor is connected to one side of the outer wall of the nylon cable, and the other end of the ground anchor is fixed to the riverbed. The counterweight chain is vertically immersed in the water. A micro air compressor is installed on one side of the outer wall of the airbag unit, and the input end of the micro air compressor is connected to the outside world. The inflation pressure adjustment range of the micro air compressor is 5 to 10 kPa.

[0010] Preferably, a silicone bionic water grass cluster is bonded to the surface of the airbag unit, and the height of the water grass cluster is 20 to 50 cm.

[0011] Preferably, the energy conversion fishway includes a piezoelectric ceramic array, a supercapacitor group and a pulse water flow generator. The piezoelectric ceramic array is bonded to the outer wall of the gate track of the lock main structure by epoxy resin glue. The supercapacitor group is connected to the graphene-based capacitor through a wire and embedded in the lock control room of the lock main structure. The pulse water flow generator is welded to the reserved holes in the upstream and downstream guide walls of the lock main structure.

[0012] Preferably, an embedded invisible fishway is embedded inside the lock wall of the main structure of the ship lock, and the embedded invisible fishway includes a vertical fish lifting pipe and a horizontal resting pool. The vertical fish lifting pipe is a PVC pipe provided with a check valve, and one end of the vertical fish lifting pipe is connected to the ship lock water injection pipe, and the ship lock water injection pipe is longitudinally embedded inside the lock wall. The horizontal resting pools are distributed inside the lock wall at intervals of 3m, and an oxygen curtain generator is installed inside the horizontal resting pool.

[0013] Preferably, the lock control room has a built-in edge computing terminal, and the edge computing terminal has a built-in fish recognition algorithm based on the YOLOv5 model. The lock control room is also connected to an input underwater camera, and the input underwater camera collects underwater RGB image data.

[0014] The present invention provides a canal hub lock fish passage facility, which has the following beneficial effects:

[0015] 1. This invention accurately simulates the turbulent flow characteristics of natural streams through a rotating vortex induction channel. A water flow sensor monitors flow velocity in real time. Edge computing terminals, based on fish flow-attraction models and algorithms, precisely control the rotational speed and inclination of rotatable guide vanes, creating vortices with a specific diameter and flow velocity distribution. This attracts fish tangentially into the channel, increasing the success rate of fish being guided through the downstream entrance of the lock and effectively resolving the issue of locks hindering fish migration.

[0016] 2. This invention's bladder-suspended fish-passing platform automatically adjusts to water level fluctuations. A micro-air compressor adjusts the inflation pressure of the air bladder units based on water level sensor data, allowing the platform to automatically rise and fall with water level fluctuations, maintaining optimal conditions for fish passage. Silicone bellows allow for proper flexure between adjacent air bladder units, resisting current impact. Counterweight chains and nylon cables ensure platform stability, minimizing horizontal drift and providing a stable and suitable environment for fish passage, adapting to varying hydrological conditions.

[0017] 3. The energy-conversion fishway of this invention has the dual functions of energy recovery and ecological simulation. When a ship passes through the lock, the vibration energy of the gate track is collected and stored by the piezoelectric ceramic array. This energy is used to drive a pulsed water flow generator, simulating tidal conditions and stimulating the upstream swimming instinct of fish. This also reduces dependence on external energy sources, achieving energy conservation and environmental protection. The guide plates within the diffusion buffer chamber rationally control the flow velocity gradient to protect the fish. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the fish passage facility of the ship lock according to the present invention;

[0019] Figure 2 This is a diagram showing the fish passage facility of the ship lock in the present invention;

[0020] Figure 3 Schematic diagram of the fish passage facility of the ship lock in the present invention;

[0021] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0022] Figure 5 Schematic diagram of the fish passing mechanism of the present invention;

[0023] Figure 6 This is a diagram showing the fish passing mechanism of the present invention;

[0024] Figure 7 is a cross-sectional view of the airbag unit of the present invention;

[0025] Figure 8 This is a connection diagram of the edge computing terminal in the present invention;

[0026] Figure 9 It is a schematic cross-sectional view of the vertical fish lifting tube in the present invention.

[0027] Among them, 1. Lock main structure; 2. Mounting base; 3. Fish passing mechanism; 301. Rotatable guide vane; 302. Drive system; 308. Servo motor; 310. Gear set; 303. Water flow sensor; 304. Center shaft; 305. Downstream inlet; 306. Flange; 307. Concrete base; 309. Silicone bionic water grass cluster; 311. Bolt; 312. Polyurethane anti-biological adhesion coating; 313. Airbag unit; 314. Silicone bellows; 315. PVC mesh outer layer; 3 16. TPU airtight layer; 317. Counterweight chain; 318. Nylon cable; 319. Ground anchor; 320. Micro air compressor; 4. Energy conversion fishway; 401. Piezoelectric ceramic array; 402. Supercapacitor group; 403. Pulse water flow generator; 404. Epoxy resin glue; 405. Gate track; 406. Graphene-based capacitor; 5. Embedded invisible fishway; 501. Vertical fish lift pipe; 502. Horizontal rest pool; 503. Lock water injection pipeline; 504. Oxygen curtain generator; 6. Edge computing terminal. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Please see the attached Figure 1 - Attachment Figure 9 An embodiment of the present invention provides a canal hub ship lock fish passing facility, including a ship lock main structure 1, a mounting base 2 is fixedly connected to the downstream side of the ship lock main structure 1, and a fish passing mechanism 3 is integrated into the outer wall of the mounting base 2 by welding. The fish passing mechanism 3 includes a rotating vortex induction channel and an airbag suspended fish passing platform, and an energy conversion fishway 4 is provided on the inner wall of the ship lock main structure 1.

[0030] The rotating vortex inducing channel includes a rotatable guide vane 301, a drive system 302 and a water flow sensor 303. The rotatable guide vane 301 is horizontally installed at the downstream inlet 305 of the main structure 1 of the ship lock through a central shaft 304. Both ends of the central shaft 304 are fixed in the concrete base 307 of the main structure 1 of the ship lock through flanges 306. The drive system 302 includes a servo motor 308 and a water flow sensor 303. The output end of the servo motor 308 is fixedly connected to a gear set 310, which is engaged with the central shaft 304. The water flow sensor 303 is a Doppler flow meter, which is fixed to the bottom of the rotating vortex inducing channel by bolts 311.

[0031] The surface of the rotatable guide vane 301 is coated with a polyurethane anti-biological adhesion coating 312. The inclination angle of the rotatable guide vane 301 is adjusted in the range of 0° to 45°. The gear set 310 is a planetary gear reduction mechanism with a reduction ratio of 10:1, which controls the blade rotation speed to 5 to 30 rpm.

[0032] Specifically, when fish approach the downstream entrance of the lock, the water flow sensor 303, i.e., the Doppler flow meter, monitors the flow velocity at the entrance in real time and transmits the data to the edge computing terminal 6 via the RS485 bus. The edge computing terminal 6 generates a control instruction based on a preset fish flow tendency model, such as grass carp preferring a flow velocity of 0.6 m / s, through the PID algorithm to drive the servo motor 308 to rotate. The gear set 310 (which uses a planetary gear reduction ratio of 10:1) reduces the motor speed to 5-30 rpm, driving the rotatable guide vane 301. Rotating around the central axis 304, the blade inclination angle is dynamically adjusted within a range of 0° to 45°. When the blade rotates, the water flow is cut to form a clockwise vortex with a diameter of 2 to 4 m. The flow velocity at the core of the vortex decreases, while the flow velocity at the edge increases, thereby simulating the turbulent flow characteristics of a natural stream and attracting fish to enter the channel along the tangent direction of the vortex. In addition, the polyurethane anti-biological adhesion coating 312 coated on the surface of the rotatable guide blade 301 can reduce the frictional resistance between the rotatable guide blade 301 and the attachment of algae, thereby ensuring the long-term and efficient operation of the blade.

[0033] The airbag suspended fish-passing platform includes an airbag unit 313, and multiple airbag units 313 are interconnected by silicone bellows 314. The outer wall of the airbag unit 313 is sequentially provided with a PVC mesh cloth outer layer 315 and a TPU airtight layer 316. A counterweight chain 317 and a nylon cable 318 are welded to the bottom of the airbag suspended fish-passing platform. One end of a ground anchor 319 is connected to one side of the outer wall of the nylon cable 318, and the other end of the ground anchor 319 is fixed to the riverbed. The counterweight chain 317 is suspended in the water. A micro air compressor 320 is installed on one side of the outer wall of the airbag unit 313. The input end of the micro air compressor 320 is connected to the outside world. The inflation pressure adjustment range of the micro air compressor 320 is 5 to 10 kPa.

[0034] The surface of the airbag unit 313 is bonded with a silicone bionic water grass cluster 309, and the height of the water grass cluster is 20 to 50 cm.

[0035] Specifically, the micro air compressor 320 adjusts the inflation pressure of the airbag unit 313 according to the water level sensor data, so that the airbag platform automatically rises and falls with the water level fluctuation. In the inflated state, the airbag expands to form a stepped drop, and the flow rate decreases when the water flows through the steps, which meets the upstream swimming needs of small and medium-sized fish. The silicone bellows 314 allows bending of ±15° between adjacent airbag units to avoid structural tearing due to water flow impact. The counterweight chain 317 and the nylon cable 318 work together to ensure that the horizontal offset of the platform is ≤0.5m. The silicone bionic water grass cluster 309 generates low-frequency vibration by swinging, releasing L-serine pheromone, inducing fish to approach and reducing stress response.

[0036] The energy conversion fishway 4 includes a piezoelectric ceramic array 401, a supercapacitor group 402 and a pulse water flow generator 403. The piezoelectric ceramic array 401 is bonded to the inner wall of the gate track 405 of the lock main structure 1 through epoxy resin glue 404. The supercapacitor group 402 is connected to the graphene-based capacitor 406 through a wire and embedded in the lock control room of the lock main structure 1. The pulse water flow generator 403 is welded to the reserved holes in the upstream and downstream guide walls of the lock main structure 1.

[0037] The lock control room has a built-in edge computing terminal 6, which has a built-in fish recognition algorithm based on the YOLOv5 model. The lock control room is also connected to an input underwater camera that collects underwater RGB image data.

[0038] Specifically, when a ship passes through the lock, the vibration energy borne by the gate track 405 is transmitted to the piezoelectric ceramic array 401. The piezoelectric piece generates an electric charge due to mechanical stress, which is converted into direct current by the rectifier circuit and stored in the graphene-based capacitor 406. The stored electric energy drives the pulse water flow generator 403: the solenoid valve opens and closes at a frequency of 1-3 times / minute, so that the water flows through the Venturi tube to form a pulse jet, simulating the tidal environment and stimulating the upstream swimming instinct of fish. A guide plate is installed in the diffusion buffer chamber to reduce the flow gradient to 0.3-0.8m / s to prevent high-speed water flow from damaging the fish body.

[0039] An embedded invisible fishway 5 is pre-buried inside the lock wall of the main structure 1 of the ship lock. The embedded invisible fishway 5 includes a vertical fish lifting pipe 501 and a horizontal resting pool 502. The vertical fish lifting pipe 501 is a PVC pipe equipped with a check valve. One end of the vertical fish lifting pipe 501 is connected to a ship lock water injection pipe 503. The ship lock water injection pipe 503 is pre-buried longitudinally inside the lock wall. The horizontal resting pools 502 are distributed inside the lock wall at intervals of 3m. An aerobic curtain generator 504 is installed inside the horizontal resting pool 502. In addition, a bubble curtain generator is also provided around the vertical fish lifting pipe 501 to guide fish into the vertical fish lifting pipe 501.

[0040] Specifically, when the lock is filled with water, the diversion branch of the lock water injection pipe 503 directs part of the water flow into the vertical fish lifting pipe 501, and the water forms a vertical upward flow in the fish lifting pipe, pushing the fish upward; the check valve prevents backflow and ensures one-way passage. Every time the fish ascend 3m, they enter the horizontal rest pool 502, and the oxygen curtain generator 504 in the pool releases high-purity oxygen to make the dissolved oxygen concentration ≥6mg / L, helping the fish to recover their physical strength. The rest pool and the fish lifting pipe are arranged alternately to form an "exercise-recovery" cycle, reducing the accumulation of fish fatigue.

[0041] Specifically, the bottom entrance of the vertical fish lift 501 is designed as a trumpet-shaped induction chamber. The outlet of the shiplock water injection pipe 503 faces the induction chamber and is equipped with a guide plate. When the shiplock is filled with water, a portion of the water flows into the induction chamber to form a gentle horizontal induction flow that attracts fish. This solves the problem of connecting the horizontal flow tendency of bottom fish with the vertical pipe. The edge computing terminal 6 can use the data from the underwater camera at the entrance to determine whether there is a school of fish and use this as the basis for whether to activate the invisible fishway, thus avoiding ineffective water injection and solving the problem of time dislocation.

[0042] When fish enter the induction chamber, the system controls the water flow rate, causing the water level in the vertical fish lift tube 501 to rise gently, lifting the fish along with the water as if in an aquarium, rather than being swept along at high speed. The inner wall of the tube is coated with a self-lubricating, low-friction coating to minimize accidental contact between the fish and the tube wall.

[0043] An energy dissipation grid is installed at the junction of the vertical fish lift tube 501 and the horizontal resting pool 502. The water rising from the fish lift tube is buffered and rectified by the grid before entering the resting pool, rapidly attenuating its kinetic energy and ensuring a still water or low-flow zone within the resting pool 502. This provides a truly resting environment for the fish, allowing them to quickly recover their strength in conjunction with the oxygen curtain generator 504.

[0044] Working Principle: When fish approach the downstream entrance of the lock, a Doppler current meter (water flow sensor 303) located at the bottom of the vortex induction channel monitors the flow velocity at the entrance in real time and transmits the data to the edge computing terminal 6 via the RS485 bus. Based on a preset fish flow-attraction model (e.g., grass carp prefer a flow velocity of 0.6 m / s), the edge computing terminal 6 generates control instructions using a PID algorithm to drive the servo motor 308. The gear set 310 at the output of the servo motor 308 (using a planetary gear reduction mechanism with a reduction ratio of 10:1) reduces the motor speed to 5-30 rpm, which in turn drives the rotatable guide vanes 301 to rotate about the central axis 304. The inclination angle of the rotatable guide vanes 301 is dynamically adjusted within a range of 0°-45°. As the vanes rotate, they cut through the water flow, forming a clockwise vortex with a diameter of 2-4 m. The vortex core velocity decreases while the edge velocity increases, accurately simulating the turbulent flow characteristics of a natural stream and attracting fish to enter the channel along the tangent of the vortex. Furthermore, the polyurethane anti-fouling coating 312 on the surface of the rotatable guide vanes 301 reduces frictional resistance with the water flow, reducing algae adhesion and ensuring long-term, efficient operation of the blades. A micro-air compressor 320 adjusts the inflation pressure of the airbag units 313 based on water level sensor data, allowing the airbag-suspended fish platform to automatically rise and fall with water level fluctuations. When inflated, the airbags expand to form a stepped drop, reducing the flow rate as the water passes over the steps, thus accommodating the upstream migration needs of small and medium-sized fish. Adjacent airbag units are connected by silicone bellows 314, which allow for ±15° of flexure between adjacent units, effectively preventing structural tears caused by water impact. A counterweight chain 317 is suspended in the water, while a nylon cable 318 is connected to the airbag-suspended fish platform at one end and anchored to the riverbed at the other end via a ground anchor 319. These two functions work together to ensure the platform's horizontal deflection is ≤0.5m. Furthermore, the silicone biomimetic waterweed clusters 309 bonded to the surface of the airbag unit 313 generate low-frequency vibrations through oscillation, releasing L-serine pheromones, which attract fish and reduce their stress response. When a ship passes through the lock, the vibration energy exerted on the gate track 405 of the main lock structure 1 is transferred to the piezoelectric ceramic array 401 bonded to its outer wall. The mechanical stress on the piezoelectric ceramics generates an electric charge, which is converted to direct current by a rectifier circuit and stored in a graphene-based capacitor 406 embedded in the lock control room and connected by wires. This stored electrical energy drives a pulsed water flow generator 403 welded to pre-recorded holes in the upstream and downstream guide walls of the main lock structure 1. The solenoid valve in the pulsed water flow generator 403 opens and closes at a frequency of 1-3 times per minute, causing water to flow through the Venturi tube as a pulsed jet, simulating tidal conditions and stimulating the upstream swimming instinct of fish.A guide plate is installed within the diffusion buffer chamber to reduce the flow gradient to 0.3-0.8 m / s, preventing high-speed water flow from damaging fish. During water injection, a water injection pipe 503 is pre-buried longitudinally within the lock wall. Its branch pipe directs part of the water flow into a vertical fish riser 501 (a PVC pipe equipped with a check valve). This water forms a vertical upwelling within the riser, propelling the fish upward. The check valve prevents backflow, ensuring one-way passage. Every 3 meters, fish enter a horizontal resting pool 502, located at 3-meter intervals within the lock wall. Oxygen curtain generators 504 are installed within the pools, releasing high-purity oxygen to maintain a dissolved oxygen concentration of ≥6 mg / L, helping the fish recover. The alternating layout of resting pools and fish risers creates an "exercise-recovery" cycle, reducing accumulated fish fatigue and facilitating smooth passage through the lock.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A canal hub ship lock fish passage facility, comprising a ship lock main structure (1), characterized in that: A mounting base (2) is fixedly connected to the downstream side of the ship lock main structure (1); a fish passing mechanism (3) is integrated into the outer wall of the mounting base (2) by welding; the fish passing mechanism (3) comprises a rotating vortex induction channel and an airbag suspended fish passing platform; and an energy conversion fishway (4) is provided on the inner wall of the ship lock main structure (1); The rotating vortex inducing channel comprises a rotatable guide vane (301), a drive system (302) and a water flow sensor (303); the rotatable guide vane (301) is horizontally mounted on a downstream inlet (305) of a ship lock main structure (1) via a central shaft (304); both ends of the central shaft (304) are fixed to a concrete base (307) of the ship lock main structure (1) via flanges (306); the drive system (302) comprises a servo motor (308) and a water flow sensor (303); an output end of the servo motor (308) is fixedly connected to a gear set (310); the gear set (310) is meshed with the central shaft (304); the water flow sensor (303) is a Doppler flow meter; and the water flow sensor (303) is fixed to the bottom of the rotating vortex inducing channel via bolts (311); The airbag suspended fish-passing platform comprises an airbag unit (313), wherein a plurality of the airbag units (313) are interconnected via a silicone bellows (314), wherein the outer wall of the airbag unit (313) is sequentially provided with a PVC mesh outer layer (315) and a TPU airtight layer (316), wherein a counterweight chain (317) and a nylon cable (318) are welded to the bottom of the airbag suspended fish-passing platform, wherein one end of a ground anchor (319) is connected to one side of the outer wall of the nylon cable (318), wherein the other end of the ground anchor (319) is fixed to the riverbed, and the counterweight chain (317) is suspended in the water, wherein a micro air compressor (320) is installed on one side of the outer wall of the airbag unit (313), wherein the input end of the micro air compressor (320) is connected to the outside, and the inflation pressure of the micro air compressor (320) is adjustable in the range of 5 to 10 kPa; The energy conversion fishway (4) comprises a piezoelectric ceramic array (401), a supercapacitor group (402) and a pulse water flow generator (403). The piezoelectric ceramic array (401) is bonded to the outer wall of the gate track (405) of the ship lock main structure (1) through epoxy resin glue (404). The supercapacitor group (402) is connected to the graphene-based capacitor (406) through a wire and embedded in the ship lock control room of the ship lock main structure (1). The pulse water flow generator (403) is welded to the reserved holes in the upstream and downstream guide walls of the ship lock main structure (1).

2. A canal hub lock fish passage facility according to claim 1, characterized in that: The surface of the rotatable guide vane (301) is coated with a polyurethane anti-biological attachment coating (312), the inclination angle of the rotatable guide vane (301) is adjustable in a range of 0° to 45°, and the gear set (310) is a planetary gear reduction mechanism.

3. A canal hub lock fish passage facility according to claim 1, characterized in that: The surface of the airbag unit (313) is bonded with a silica gel bionic water grass cluster (309), and the height of the water grass cluster is 20 to 50 cm.

4. A canal hub lock fish passage facility according to claim 1, characterized in that: An embedded invisible fishway (5) is pre-buried inside the lock wall of the ship lock main structure (1). The embedded invisible fishway (5) includes a vertical fish lifting pipe (501) and a horizontal rest pool (502). The vertical fish lifting pipe (501) is a PVC pipe provided with a check valve. One end of the vertical fish lifting pipe (501) is connected to a ship lock water injection pipe (503). The ship lock water injection pipe (503) is pre-buried longitudinally inside the lock wall. The horizontal rest pool (502) is distributed inside the lock wall at intervals of 3m. An oxygen curtain generator (504) is installed inside the horizontal rest pool (502).

5. The canal hub lock fish passage facility according to claim 1, characterized in that: The ship lock control room has a built-in edge computing terminal (6), the edge computing terminal (6) has a built-in fish recognition algorithm based on the YOLOv5 model, and the ship lock control room is also connected to an input underwater camera, which collects underwater RGB image data.

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