A fish passing device with water level self-adaptive adjustment for water and electricity fish protection

Abstract

The application discloses a fish passing device with water level self-adaptive adjustment for water and electricity fish protection, and relates to the field of fish passing devices.The fish passing device with water level self-adaptive adjustment for water and electricity fish protection is characterized in that: the inner baffle and the inclined baffle are matched, the inclined baffle is used to tilt and close to the water collecting mechanism, the secondary guidance of the water flow after the water flow is divided can be realized, the water flow track is further stabilized, and the structure features that the height of the two sides of the inner baffle is higher are matched, so that the relative still water rest space is formed in the two side areas between the inner baffles, the fish temporarily rests during the swimming process, and the buffer rest area is avoided, so that the fish is not prone to power consumption and cannot pass the flow.

Description

Technical Field

[0001] This invention relates to the field of fish passage devices, and more specifically to a fish passage device for hydroelectric fish protection with adaptive water level regulation. Background Technology

[0002] At present, the scale of hydropower construction continues to expand. While hydropower stations, sluices and other water conservancy facilities regulate water resources and generate electricity and prevent floods, they also block the migration channels and daily travel paths of fish in natural river channels, destroy the ecological connectivity of aquatic areas, and are very likely to cause a decline in the number of fish populations and a reduction in biodiversity in the region. Therefore, fish flow protection devices have become the core supporting equipment for hydropower ecological protection. In the prior art, invention patent CN112942264A discloses a "floating dock adaptive adjustment water replenishment fishway," in which the bottom end of the fishway body is rotatably connected to the floating dock structure, and an auxiliary swimming structure is set inside the fishway body. The angle of the auxiliary swimming plate is adjusted by a corresponding adjustment structure to adapt to changes in the water level difference between upstream and downstream, while providing auxiliary and resting conditions for fish during their upstream migration. This technology can improve the problem of traditional fishways having difficulty connecting upstream and downstream when the water level changes. However, from the perspective of hydrodynamic control inside the fish passage, this solution mainly focuses on the overall posture of the fishway and the adjustment of the auxiliary swimming structure. It does not provide the same solution as this application for how to continuously stratify and divert the water flow after entering the fishway, provide secondary guidance and local buffering, and how to form a relatively stable low-velocity resting area in the continuous water guiding path. In addition, under long-term operating conditions, silt and floating debris may affect the adjustment structure with sliding or moving relationships. This prior art also does not provide a corresponding technical solution for the synergistic relationship between adjustment actions and obstacle clearing actions.

[0003] Chinese patent application CN114319261A discloses a "vertical slotted fishway with H-shaped piers and short baffles." This design incorporates H-shaped piers, long and short side baffles within the fishway enclosure. Multiple water-blocking and energy-dissipating structures adjust the water flow direction, reducing flow velocity and turbulent kinetic energy within the enclosure and directing the main flow towards the center of the fishway. A low-velocity backflow zone is also formed behind the baffles and H-shaped piers, providing a brief resting place for fish swimming upstream. While this technology effectively optimizes the flow pattern within the fishway and addresses the resting needs of fish with weak swimming abilities, it primarily relies on the enclosure, H-shaped piers, and long and short side baffles to dissipate energy and redistribute the water flow within a fixed channel. However, it lacks a corresponding buoyancy linkage structure to adaptively adjust the fishway's inlet position, guiding posture, and water collection state in response to significant changes in upstream and downstream water levels.

[0004] Therefore, although existing technologies have been studied and improved to regulate fish passages according to water level changes and to reduce flow velocity and create resting areas for fish using water-blocking structures, there is still room for further improvement in the actual operation environment of hydropower projects: under fluctuating water levels, the fish passage device needs to be able to automatically adjust the water guide position and tilt state according to water level changes to maintain relatively stable water intake and water guide conditions; the water flow needs to be layered, buffered, and guided in continuous fish passages to reduce water flow impact while creating a relatively slow-flow area for fish to stay briefly; the movable regulating mechanism is in a natural water environment for a long time, and silt and floating debris tend to accumulate in the guide and sliding parts, so it is also necessary to improve the operational reliability of the regulating mechanism in water bodies containing silt and debris.

[0005] Therefore, it is necessary to provide a fish passage device that combines adaptive water level regulation, fish passage flow diversion and buffering, fish resting, and obstacle removal at the regulation points, in order to improve the existing problems of fish passage facilities in terms of adaptability to water level changes, continuous water flow control, and long-term operational stability. Summary of the Invention

[0006] To address the aforementioned problems, a technical solution is proposed: a fish passage device for hydroelectric fish protection with adaptive water level regulation, comprising: A guide rail mechanism, wherein a water guiding mechanism is installed on the top of the guide rail mechanism, and a water collecting mechanism is installed on the top of the water guiding mechanism; The water guiding mechanism includes a guide plate, one end of which is fixedly connected to the top of a guide rail mechanism. Side baffles are fixedly installed on both sides of the top of the guide plate, and an inner baffle is fixedly installed between the side baffles. The bottom of the inner baffle is flush with the top of the guide plate, and the inner baffles are evenly installed axially between the side baffles. The height of the inner baffles gradually decreases from both sides to the center and curves in an arc towards the side away from the water collecting mechanism. An inclined baffle is fixedly installed on the side of the inner baffle closest to the water collecting mechanism. The baffle and the inclined baffle work together, and the inclined baffle tilts towards the water collection mechanism to guide the water flow after diversion, further stabilizing the water flow trajectory. At the same time, the structure of the inner baffle with higher height on both sides creates a relatively still water resting space on both sides between the inner baffles, allowing fish that are exhausted during swimming to rest temporarily, avoiding the lack of a buffer resting area, which would cause fish to easily become exhausted and unable to pass through the flow. The inclined baffle is symmetrically installed at the center position of the axis of the inner baffle, and the end of the inclined baffle away from the inner baffle tilts towards the water collection mechanism.

[0007] Preferably, a column groove plate is fixedly installed at one end of the guide plate near the water collection mechanism. A column groove is opened on the outer side of the column groove plate. An inner arc strip is fixedly installed on the top of the guide plate. The top of the inner arc strip is a convex arc surface. The inner arc strip is evenly installed between the inner baffles. By adopting the structural design of the inner baffles, which are high on both sides and low in the center and arc-shaped concave towards the side away from the water collection mechanism, the water flow above the guide plate can be divided into layers, reducing the overall water flow velocity, weakening the water flow impact force, and at the same time regulating the water flow direction, guiding the water flow to flow steadily downward along the center position, avoiding the situation of water flow dispersion and eddy current generation, and providing a gentle water flow environment for fish to swim against the current. The inner arc strip is arc-shaped concave towards the side away from the water collection mechanism.

[0008] Preferably, the guide rail mechanism includes a fixed frame plate, a side slide rail is fixedly installed on the top of the fixed frame plate, the side slide rails are symmetrically installed along the center position of the axis of the fixed frame plate, a bottom slide plate is slidably installed on the inner wall of each side slide rail, a column groove block is fixedly installed at the center position of the top of the bottom slide plate, a column groove is opened on the top of each outer side of the column groove block, and a connecting column is rotatably installed at the column groove of the column groove block, and a rotating block is rotatably installed on the top of the column groove block through the connecting column.

[0009] Preferably, the top of the trough block is fixedly connected to the bottom of the guide plate away from the water collection mechanism. Side shovels are fixedly installed on both sides of the bottom slide plate. The side of the side shovel away from the bottom slide plate is an inclined surface that slopes from top to bottom away from the bottom slide plate. The side shovel is provided with a shovel blade at the end away from the bottom slide plate, and notches are evenly opened at the shovel blade. The side shovels installed on both sides of the bottom slide plate can move synchronously with the adjustment action of the device. Relying on the outer inclined surface and the end shovel blade, the mud and floating debris accumulated on the guide rail are cleaned, avoiding the accumulation of debris from affecting the adjustment and operation of the device. The notches opened at the shovel blade can reduce the adhesion of debris and maintain the obstacle clearing effect. Arc protrusions are fixedly installed on the inclined surface of the side shovels, and the top of the arc protrusion is a raised arc surface.

[0010] Preferably, the water collection mechanism includes a top plate, an inner rotating shaft is rotatably installed on the side of the top plate near the guide plate, and the top plate is rotatably connected to the column groove of the column groove plate through the inner rotating shaft. A fixing plate is fixedly installed at the bottom of the top plate, the fixing plate is symmetrically installed along the center position of the axis of the top plate, and a hollow float is fixedly installed at the bottom of the fixing plate.

[0011] Preferably, a zigzag guide plate is fixedly installed on the top of the top plate. The zigzag guide plate is symmetrically installed along the center of the axis of the top plate, and the end of the zigzag guide plate away from the guide plate bends to both sides. An arc-shaped convex plate is fixedly installed on the top of the top plate. The height of the arc-shaped convex plate gradually increases as it approaches the guide plate, and the side of the arc-shaped convex plate near the guide plate is flat. Inner arc plates are fixedly installed on the opposite sides of the zigzag guide plate. By adopting a two-sided zigzag extension structure, the water collection area can be expanded, effectively improving... To improve water collection efficiency and ensure sufficient water flow in the fish passage under different water levels, avoiding insufficient water flow during the dry season that would prevent fish from passing through, the inner arc plate on the inner side of the tortuous guide plate features an arc-shaped bend with gradually decreasing spacing. This allows for the gradual gathering and concentration of water from a large area, preventing sudden and uneven water flow. The inner arc plate bends in an arc on one side of the guide plate and is located between the arc-shaped convex plate and the guide plate. The distance between the inner arc plates gradually decreases as they approach the guide plate.

[0012] Compared with the prior art, the beneficial effects of the present invention include: (1) By combining the inner baffle with the inclined baffle, the inclined baffle is tilted towards the water collection mechanism, which can guide the water flow after diversion for a second time, further stabilizing the water flow trajectory. At the same time, in combination with the structural feature of the higher height on both sides of the inner baffle, a relatively still water resting space is formed in the area between each inner baffle, which provides temporary rest for fish that are exhausted during swimming, avoiding the lack of a buffer resting area, which would cause fish to be easily exhausted and unable to pass through the flow.

[0013] (2) By adopting the structural design of the inner baffle with high sides and low center and arc-shaped concave on the side away from the water collection mechanism, the water flow above the guide plate can be divided into layers, reducing the overall water flow velocity, weakening the water flow impact force, and at the same time regulating the water flow direction, guiding the water flow to flow steadily downward along the center position, avoiding the situation of water flow scattering and eddy current generation, and providing a gentle water flow environment for fish to swim against the current.

[0014] (3) The side shovels mounted on both sides of the bottom slide plate can move synchronously with the adjustment of the device. Relying on the outer inclined surface and the end shovel blade, the mud and sand and floating debris accumulated on the guide rail are cleaned up, avoiding the accumulation of debris from affecting the adjustment and operation of the device. The notch opened at the shovel blade can reduce the adhesion of debris and maintain the obstacle clearing effect.

[0015] (4) By adopting a curved extension structure on both sides of the zigzag guide plate, the water collection area can be expanded, the water collection efficiency can be effectively improved, and the fish passage can always have sufficient water flow under different water level conditions. This avoids the problem of insufficient water flow in the passage during the dry season, which would prevent fish from passing through. The inner arc plate on the inner side of the zigzag guide plate has the characteristics of arc bending and gradually narrowing spacing, which can gradually gather and collect the large-scale water flow, avoiding the situation of sudden water flow and uneven water volume. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram showing the position and structure of the water guiding mechanism and the water collecting mechanism of the present invention; Figure 4 This is a schematic diagram of the water collection mechanism of the present invention; Figure 5 This is a partial structural side view of the water collection mechanism of the present invention; Figure 6 This is a schematic diagram of the water guiding mechanism of the present invention; Figure 7 This is a partial structural side view of the water guiding mechanism of the present invention; Figure 8 This is a schematic diagram of the guide rail mechanism of the present invention; Figure 9 This is an enlarged schematic diagram of part of the guide rail mechanism of the present invention.

[0018] In the diagram: 1. Guide rail mechanism; 2. Water guiding mechanism; 3. Water collecting mechanism; 11. Fixed frame plate; 12. Side slide rail; 13. Rotary trough block; 14. Column groove block; 15. Connecting column; 16. Bottom slide plate; 17. Arc protrusion block; 18. Side shovel plate; 21. Guide plate; 22. Column groove plate; 23. Side baffle; 24. Inner baffle; 25. Inclined baffle; 26. Inner arc strip; 31. Top plate; 32. Bending guide plate; 33. Inner arc plate; 34. Fixed plate; 35. Hollow float block; 36. Arc protrusion plate; 37. Inner rotating shaft. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Various modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0020] Example 1 refer to Figures 1 to 3 and Figures 6 to 7 This invention provides a fish passage device for hydroelectric fish protection with adaptive water level adjustment, comprising: The guide rail mechanism 1 has a water guiding mechanism 2 installed on its top, and a water collecting mechanism 3 is installed on the top of the water guiding mechanism 2. The water guiding mechanism 2 includes a guide plate 21. One end of the bottom of the guide plate 21 is fixedly connected to the top of the guide rail mechanism 1. Side baffles 23 are fixedly installed on both sides of the top of the guide plate 21. An inner baffle 24 is fixedly installed between the side baffles 23. The bottom of the inner baffle 24 fits against the top of the guide plate 21. The inner baffle 24 is evenly installed axially between the side baffles 23. The height of the inner baffle 24 gradually decreases from the sides to the center and curves and indents towards the side away from the water collecting mechanism 3. An inclined baffle 25 is fixedly installed on the side of the inner baffle 24 closest to the water collecting mechanism 3. One end of the bottom of the guide plate 21 is fixedly connected to the rotating block 13. The angle and position are adjusted according to the adjustment action of the guide rail mechanism 1. The side baffles 23 on both sides of the top of the guide plate 21 form a lateral enclosure of the water guiding channel, preventing water from overflowing. To ensure concentrated water flow, the inner baffles 24, evenly distributed between the side baffles 23, are attached to the top surface of the guide plate 21 at their bottom. The height of the inner baffles 24 gradually decreases from both sides to the center and curves in an arc shape away from the water collection mechanism 3. This allows for layered distribution of the water flow above the guide plate 21, regulating the flow direction and preventing the water flow from becoming scattered. The water flow is guided downward from the center. The inclined baffles 25, symmetrically installed on the side of the inner baffles 24 near the water collection mechanism 3, are inclined towards the water collection mechanism 3 at their ends to guide the water flow between the inner baffles 24. Combined with the relatively high height of the inner baffles 24, the space between the inner baffles 24 provides resting space for fish on both sides. The inclined baffles 25 are symmetrically installed at the center of the axis of the inner baffles 24, and the end of the inclined baffles 25 away from the inner baffles 24 is inclined towards the water collection mechanism 3.

[0021] A column groove plate 22 is fixedly installed at one end of the guide plate 21 near the water collection mechanism 3. A column groove is opened on the outer side of the column groove plate 22. An inner arc strip 26 is fixedly installed on the top of the guide plate 21. The top of the inner arc strip 26 is a convex arc surface. The inner arc strip 26 is evenly installed between the inner baffles 24. It forms a rotating connection structure with the water collection mechanism 3 through the outer column groove. The top of the inner arc strip 26, which is evenly distributed between the inner baffles 24, is a convex arc surface. It is curved in an arc shape away from the water collection mechanism 3. This can further refine the water flow guidance path, buffer the water flow impact force, and provide a stable water flow environment for fish to swim smoothly. The inner arc strip 26 is curved in an arc shape away from the water collection mechanism 3.

[0022] Example 2 Based on Example 1, and referring to Figures 8 to 9The guide rail mechanism 1 includes a fixed frame plate 11. A side slide rail 12 is fixedly mounted on the top of the fixed frame plate 11. The side slide rails 12 are symmetrically installed along the center of the axis of the fixed frame plate 11. Bottom slide plates 16 are slidably mounted on the inner walls of the side slide rails 12. A column groove block 14 is fixedly mounted at the center of the top of the bottom slide plate 16. Column grooves are formed on the top of the outer sides of the column groove block 14, and connecting columns 15 are rotatably mounted at the column grooves of the column groove block 14. The fixed frame plate 11 provides stable support for all upper structures. When the device is working, the bottom slide plates 16 of the side slide rails 12 symmetrically mounted on the top of the fixed frame plate 11 are in contact with the side slide rails 12. The inner wall of the side slide rail 12 allows for sliding, and the position can be adaptively displaced along the side slide rail 12 according to the changes in water level. The column groove block 14 fixed at the top center of the bottom slide plate 16 is connected to the column 15 through the top column groove. The rotating groove block 13 is rotated through the connecting column 15. The top of the rotating groove block 13 is fixedly connected to the guide plate 21 of the water guiding mechanism 2. While the bottom slide plate 16 slides, the rotation of the connecting column 15 drives the guide plate 21 to adjust its tilt angle and horizontal position synchronously to adapt to changes in water level. The rotating groove block 13 is rotatably installed on the top of the column groove block 14 through the connecting column 15.

[0023] The top of the trough block 13 is fixedly connected to the bottom of the guide plate 21 at the end away from the water collection mechanism 3. Side shovels 18 are fixedly installed on both sides of the bottom slide plate 16. The side of the side shovel 18 away from the bottom slide plate 16 is an inclined surface that slopes from top to bottom away from the bottom slide plate 16. The side shovel 18 is provided with a shovel blade at the end away from the bottom slide plate 16, and notches are evenly opened at the shovel blade. The side shovels 18 fixed on both sides of the bottom slide plate 16 move synchronously with the bottom slide plate 16. The inclined surface and the end shovel blade of the side shovel 18 can clean the mud and sand debris accumulated at the bottom during the device adjustment process. The notches opened at the shovel blade can reduce the adhesion of debris and improve the obstacle removal effect. At the same time, the arc protrusions 17 on the inclined surface of the side shovel 18 guide the bottom water flow through the raised arc surface to avoid the water flow turbulence affecting the adjustment stability of the device. Arc protrusions 17 are fixedly installed on the inclined surface of the side shovel 18, and the top of the arc protrusions 17 is a raised arc surface.

[0024] Example 3 Based on Examples 1 and 2, and referring to Figures 4 to 5The water collection mechanism 3 includes a top plate 31. An inner rotating shaft 37 is rotatably mounted on the side of the top plate 31 near the guide plate 21, and the top plate 31 is rotatably connected to the column groove of the column groove plate 22 through the inner rotating shaft 37. A fixing plate 34 is fixedly mounted on the bottom of the top plate 31. The top plate 31 is rotatably engaged with the column groove of the column groove plate 22 through the inner rotating shaft 37, so that the water collection mechanism 3 can rotate flexibly relative to the water guide mechanism 2, and adapt to the angle changes caused by water level fluctuations. The fixing plates 34 symmetrically fixed at the bottom of the top plate 31 are used to support the hollow core. The hollow float 35, relying on its own hollow buoyancy structure, automatically rises or sinks with the change of water level, completing the adaptive adjustment of water level. The guide water mechanism 2 adjusts its posture in sync. The curved guide plate 32, which is symmetrically installed on the top plate 31, extends to both sides at the far end, which can collect surface water flow over a large area, expand the water collection range, and ensure sufficient water flow in the fish passage. The fixed plate 34 is symmetrically installed at the center of the axis of the top plate 31, and the hollow float 35 is fixedly installed at the bottom of the fixed plate 34.

[0025] A zigzag guide plate 32 is fixedly installed on the top of the top plate 31. The zigzag guide plate 32 is symmetrically installed at the center of the axis of the top plate 31, and the end of the zigzag guide plate 32 away from the guide plate 21 bends to both sides. An arc-shaped convex plate 36 is fixedly installed on the top of the top plate 31. The height of the arc-shaped convex plate 36 gradually increases as it approaches the guide plate 21, and the side of the arc-shaped convex plate 36 near the guide plate 21 is flat. Inner arc plates 33 are fixedly installed on the opposite sides of the zigzag guide plate 32. The inner arc plates 33 fixed on the opposite sides of the zigzag guide plate 32 are curved in an arc to the side of the guide plate 21, and the spacing between the inner arc plates 33 gradually narrows in the direction of the guide plate 21, which can collect... The water flow is gathered to smoothly connect the water flow to the guide channel of the guide mechanism 2. The height of the arc-shaped convex plate 36 at the top of the top plate 31 gradually increases as it approaches the guide plate 21, and the side near the guide plate 21 is flat, which can block the lateral scattered water flow, regulate the main water flow channel, and complete the final sorting of the water flow with the inner arc plate 33, ensuring that the flow velocity and direction of the water flowing into the guide mechanism 2 are stable, providing a continuous and stable water flow condition for fish to pass through smoothly. The inner arc plate 33 is curved to one side of the guide plate 21, and the inner arc plate 33 is located between the arc-shaped convex plate 36 and the guide plate 21, and the distance between the inner arc plates 33 gradually decreases as it approaches the guide plate 21.

[0026] In the water guiding mechanism 2, one bottom end of the guide plate 21 is fixedly connected to the rotating block 13. Its angle and position are adjusted according to the adjustment action of the guide rail mechanism 1. The side baffles 23 on both sides of the top of the guide plate 21 form lateral barriers around the water guiding channel, preventing water overflow and ensuring concentrated water flow. The inner baffles 24, evenly distributed between the side baffles 23, are attached to the top surface of the guide plate 21 at their bottom. The height of the inner baffles 24 gradually decreases from both sides to the center and curves in an arc shape away from the water collecting mechanism 3. This allows for layered diversion of the water flow above the guide plate 21, regulating the water flow direction, preventing water from becoming scattered, and ensuring the water flows downward from the center. The inner baffle 24 has symmetrically installed inclined baffles 25 on the side near the water collection mechanism 3. The ends of the baffles 24 are inclined towards the water collection mechanism 3 to guide the water flow between the inner baffles 24. Combined with the high height of the two sides of the inner baffles 24, the space between the inner baffles 24 provides a resting space for fish on both sides. The outer column groove forms a rotating connection structure with the water collection mechanism 3. The inner arc strips 26 evenly distributed between the inner baffles 24 have a convex arc surface at the top and are curved in an arc shape away from the water collection mechanism 3. This can further refine the water flow guidance path, buffer the water flow impact, and provide a stable water flow environment for fish to swim smoothly.

[0027] In the guide rail mechanism 1, the fixed frame plate 11 provides stable support for all the upper structures. The side slide rails 12, symmetrically installed on the top of the fixed frame plate 11, slide against the inner wall of the side slide rails 12 during operation. The bottom slide plate 16 adapts to changes in water level, moving forward and backward along the side slide rails 12. A column groove block 14 fixed at the top center of the bottom slide plate 16 connects to a column 15 via the top column groove, enabling the rotation of the rotating block 13. The top of the rotating block 13 is fixedly connected to the guide plate 21 of the water guiding mechanism 2. The bottom slide plate 16 slides... Simultaneously, in conjunction with the rotation of the connecting column 15, the guide plate 21 is driven to adjust its tilt angle and horizontal position synchronously to adapt to changes in water level. The side shovels 18 fixed on both sides of the bottom slide plate 16 move synchronously with the bottom slide plate 16. The inclined surface on the outer side of the side shovel 18 and the end blade can clean up the silt and debris accumulated at the bottom during the device adjustment process. The notch opened at the blade can reduce the adhesion of debris and improve the obstacle removal effect. At the same time, the arc protrusion 17 on the inclined surface of the side shovel 18 guides the bottom water flow through the raised arc surface to avoid water flow turbulence affecting the stability of the device adjustment.

[0028] In the water collection mechanism 3, the top plate 31 rotates with the column groove plate 22 via the inner rotating shaft 37, allowing the water collection mechanism 3 to rotate flexibly relative to the water guiding mechanism 2, adapting to the angle changes caused by water level fluctuations. The fixed plates 34 symmetrically fixed at the bottom of the top plate 31 support the hollow float 35. The hollow float 35, relying on its own hollow buoyancy structure, automatically rises or sinks with changes in water level, completing adaptive water level adjustment and simultaneously guiding the water guiding mechanism 2 to adjust its posture. The symmetrically installed curved guide plates 32 at the top of the top plate 31 extend to both sides from the far end, collecting surface water over a wide area, expanding the water collection range, and ensuring... The water flow in the fish passage is sufficient. The inner arc plate 33, which is fixed on the opposite side of the curved guide plate 32, bends in an arc to the side of the guide plate 21. The distance between the inner arc plates 33 gradually narrows in the direction of the guide plate 21, which can gather the collected water flow and make the water flow smoothly connect to the guide channel of the guide mechanism 2. The height of the arc convex plate 36 at the top of the top plate 31 gradually increases as it approaches the guide plate 21, and the side adjacent to the guide plate 21 is flat, which can block the lateral scattered water flow, regulate the main water flow channel, and complete the final sorting of the water flow with the inner arc plate 33. This ensures that the flow rate and direction of the water flowing into the guide mechanism 2 are stable, providing a continuous and stable water flow condition for the fish to pass through smoothly.

[0029] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A fish passage device for hydroelectric fish protection with adaptive water level regulation, characterized in that, The system includes a guide rail mechanism (1), a water guiding mechanism (2), and a water collecting mechanism (3). The water guiding mechanism (2) includes a guide plate (21), with side baffles (23) fixedly installed on both sides of the top of the guide plate (21). Multiple inner baffles (24) are evenly arranged axially between the two side baffles (23). The height of the inner baffles (24) gradually decreases from both sides towards the center and curves and indents towards the side away from the water collecting mechanism (3). An inclined baffle (25) is fixedly installed on the side of the inner baffle (24) near the water collecting mechanism (3). The inclined baffle (25) is symmetrically arranged along the center of the axis of the inner baffle (24) and the end away from the inner baffle (24) is inclined towards the side of the water collecting mechanism (3). The track mechanism (1) includes a fixed frame plate (11) and a side slide rail (12). A bottom slide plate (16) is slidably installed in the side slide rail (12). A column groove block (14) is fixedly installed on the top of the bottom slide plate (16). A rotating groove block (13) is rotatably installed on the column groove block (14) through a connecting column (15). The rotating groove block (13) is fixedly connected to the bottom of the guide plate (21) away from the water collection mechanism (3). The water collection mechanism (3) includes a top plate (31). The top plate (31) is rotatably connected to a column groove plate (22) located on the guide plate (21) near the water collection mechanism (3) through an inner rotating shaft (37). A hollow float block (35) is installed on the bottom of the top plate (31) through a fixed plate (34).

2. The fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 1, characterized in that: The top of the guide plate (21) is fixedly installed with an inner arc strip (26). The top of the inner arc strip (26) is a raised arc surface. Multiple inner arc strips (26) are evenly arranged between the inner baffles (24), and the inner arc strips (26) are curved in an arc shape away from the water collection mechanism (3).

3. A fish passage device for hydroelectric fish protection with adaptive water level adjustment according to claim 1, characterized in that: Side shovels (18) are fixedly installed on both sides of the bottom slide plate (16). The side of the side shovel (18) away from the bottom slide plate (16) is an inclined surface that slopes from top to bottom away from the bottom slide plate (16).

4. A fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 3, characterized in that: The side shovel plate (18) is provided with a shovel blade at one end away from the bottom slide plate (16), and the shovel blade is provided with notches evenly.

5. A fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 3, characterized in that: An arc-shaped protrusion (17) is fixedly installed on the inclined surface of the side shovel plate (18), and the top of the arc-shaped protrusion (17) is a raised arc surface.

6. A fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 1, characterized in that: A zigzag guide plate (32) is fixedly installed on the top of the top plate (31), and the zigzag guide plate (32) bends to both sides at one end away from the guide plate (21).

7. A fish passage device for hydroelectric fish protection with adaptive water level adjustment according to claim 6, characterized in that: The zigzag guide plate (32) is symmetrically arranged at the center position of the axis of the top plate (31).

8. A fish passage device for hydroelectric fish protection with adaptive water level adjustment according to claim 6, characterized in that: An arc-shaped protrusion plate (36) is fixedly installed on the top of the top plate (31). The height of the arc-shaped protrusion plate (36) gradually increases as it approaches the guide plate (21), and the side of the arc-shaped protrusion plate (36) that is close to the guide plate (21) is flat.

9. A fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 8, characterized in that: The opposing surfaces of the zigzag guide plate (32) are fixedly equipped with inner arc plates (33), which are curved toward one side of the guide plate (21) and are located between the arc convex plate (36) and the guide plate (21).

10. A fish passage device for hydroelectric fish protection with adaptive water level regulation according to claim 9, characterized in that: The distance between the two inner arc plates (33) gradually decreases as they approach the guide plate (21).

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