Flow rate adjustable fishway

Abstract

The application provides a fishway with adjustable flow rate, characterized in that the fishway comprises a plurality of movable partitions, guide rails, driving devices and walking mechanisms, the guide rails are arranged on the side edges of the fishway, the movable partitions are arranged in the fishway along the water flow direction and are provided with migration channels, the walking mechanisms can drive the movable partitions to move along the guide rails in the fishway under the driving of the driving devices, thereby adjusting the distance between the movable partitions and adjusting the water flow rate.

Description

Technical Field

[0001] This application relates to the field of water conservancy and hydropower engineering, specifically to a fishway with adjustable flow rate. Background Technology

[0002] Traditional open channel fishways typically employ fixed baffle structures to physically slow water flow and aid fish migration. However, existing technologies have significant limitations: the spacing and angle of the fixed baffles cannot be dynamically adjusted, resulting in a uniform flow velocity within the fishway, which is ill-suited to the diverse migration needs of different fish species (e.g., some fish prefer slow flow, while others require higher flow rates to stimulate migration). Furthermore, fixed structures can easily create uneven flow velocities under complex hydrological conditions, potentially forming turbulence or stagnant water zones, increasing resistance to fish passage, and even leading to excessive energy expenditure or injury. Although some studies have attempted to regulate flow velocity using mechanical devices, existing solutions often rely on complex control systems or energy-intensive power units, resulting in low adjustment accuracy, poor stability, and high maintenance costs, failing to meet the practical needs of eco-friendly fishways. Therefore, there is an urgent need for a simple, flexible, and reliable flow velocity control device to improve the versatility and ecological benefits of fishways. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this application is to provide a fishway with adjustable flow rate, in which fixed baffles and movable baffles are alternately arranged, and the water flow rate is adjusted by adjusting the distance between the fixed baffles and the movable baffles.

[0004] According to this application, an adjustable flow rate fishway includes several movable partitions, guide rails, a drive device, and a walking mechanism. The guide rails are disposed on the side of the fishway. The movable partitions have migratory channels and are arranged in the fishway along the direction of water flow. The walking mechanism can drive the movable partitions to move along the guide rails in the fishway under the drive of the drive device, thereby adjusting the distance between the movable partitions and adjusting the water flow rate.

[0005] Preferably, the traveling mechanism includes a speed reducer, traveling wheels, and a braking device, and the traveling mechanism can move on the guide rail via the traveling wheels.

[0006] Preferably, the walking mechanism further includes anti-tipping wheels, which can ensure the stability of the moving partition when it is impacted by water flow.

[0007] Preferably, the several movable partitions are connected by chains, and the walking mechanism can drive the several movable partitions to move as a whole when it moves.

[0008] Preferably, the guide rail is provided with a clamping and locking mechanism, which can clamp the guide rail to prevent the traveling mechanism from sliding on the guide rail and causing displacement of the moving partition.

[0009] Preferably, the movable partition includes a fixed baffle and / or a rotating baffle, wherein the rotating baffle is capable of rotating along a rotation axis to adjust the size of the backflow channel.

[0010] Preferably, the movable partition is provided with at least two rotating baffles, which can rotate along the rotation axis to adjust the size of the backflow channel.

[0011] Preferably, it also includes a fixed partition, which has a migration channel and is arranged in the fishway along the direction of water flow. The water flow rate can be adjusted by adjusting the distance between the fixed partition and the movable partition.

[0012] Preferably, the fixed partitions and the movable partitions are arranged alternately.

[0013] Preferably, the fixed partition includes a fixed baffle and / or a rotating baffle, wherein the rotating baffle can rotate along the rotation axis to adjust the size of the backflow channel.

[0014] Compared with the prior art, this application has the following beneficial effects:

[0015] 1. The flow rate adjustable fishway provided in this application has a walking mechanism that can adjust the distance between the moving baffles, thereby adjusting the flow rate to adapt to the migration needs of different fish species and significantly improve the fishway passage efficiency.

[0016] 2. The flow rate adjustable fishway provided in this application is equipped with a rotating baffle on the movable baffle or the fixed baffle. By adjusting the rotation angle of the rotating baffle, the size of the migratory channel can be adjusted, and continuous dynamic control of the water flow rate can be achieved.

[0017] 3. The adjustable flow rate fishway provided in this application uses a walking mechanism to control the movement of the moving baffle. Combined with anti-tipping wheels and clamping and locking mechanisms, it can ensure the stability of the moving baffle under the impact of high-speed water flow, avoid flow rate fluctuations caused by vibration or displacement deviation, and ensure adjustment accuracy.

[0018] 4. The flow rate adjustable fishway provided in this application can be driven independently or connected by chains to drive the whole, reducing energy consumption while supporting segmented control of large-scale fishways. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the adjustable flow rate fishway in the first embodiment;

[0021] Figure 2 This is a top view of the flow rate adjustable fishway in the first embodiment;

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of part B;

[0024] Figure 5 This is a schematic diagram of the first structure of the movable partition in the first embodiment;

[0025] Figure 6 This is a front view of the movable partition in the first embodiment;

[0026] Figure 7 for Figure 6 An enlarged schematic diagram of section C;

[0027] Figure 8 This is a schematic diagram of the fixed partition in the first embodiment;

[0028] Figure 9 This is a schematic diagram of the second structure of the movable partition;

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Guide rail;

[0031] 2-Drive device;

[0032] 3-Moveable partition;

[0033] 4-Fixed partition;

[0034] 5-Walking mechanism;

[0035] 6- Gearbox;

[0036] 7-Walking wheels;

[0037] 8-Anti-tipping wheel;

[0038] 9-Clamping and locking mechanism;

[0039] 10-Fixed baffle;

[0040] 11- Rotate the baffle. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0043] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0044] First Embodiment

[0045] like Figure 1-9 As shown, the flow rate adjustable fishway provided in this embodiment includes several movable baffles 3, guide rails 1, a drive device 2, and a walking mechanism 5. The guide rails 1 are arranged on the side of the fishway. In this embodiment, the guide rails 1 are arranged on both sides of the fishway. In other embodiments, they can also be arranged on the same side of the fishway. The movable baffles 3 are all provided with migratory channels and are arranged in the fishway along the direction of water flow. The walking mechanism 5 can drive the movable baffles 3 to move along the guide rails 1 in the fishway under the drive of the drive device 2, thereby adjusting the distance between the movable baffles 3 and adjusting the water flow rate.

[0046] Specifically, in this embodiment, the walking mechanism 5 is set on the guide rails 1 on both sides of the fishway. Each movable partition 3 is fixedly connected to a set of walking mechanisms 5 on both sides. Each walking mechanism 5 can independently drive the movable partition 3 to move along the guide rail 1 under the drive of the driving device 2.

[0047] The traveling mechanism 5 includes a reducer 6, traveling wheels 7, and a braking device. The traveling mechanism 5 is mounted on the guide rail 1 via the traveling wheels 7, and the traveling mechanism 5 can move on the guide rail 1 via the traveling wheels 7.

[0048] Furthermore, the walking mechanism 5 is also equipped with an anti-tipping wheel 8. The walking mechanism 5 has an anti-tipping wheel 8 mounting plate on the side facing the inside of the fishway. The anti-tipping wheel 8 can ensure the stability of the moving partition 3 when it is impacted by water flow.

[0049] Furthermore, a clamping and locking mechanism 9 is provided on the guide rail 1. The clamping and locking mechanism 9 can clamp the guide rail 1 to prevent the traveling mechanism 5 from sliding on the guide rail 1 and causing the moving partition 3 to shift.

[0050] Furthermore, the drive device 2 is a brake motor, which can achieve self-locking when power is off.

[0051] The flow rate adjustable fishway provided in this embodiment also includes a fixed baffle 4. In this embodiment, the fixed baffle 4 and the movable baffle 3 are arranged alternately. In other embodiments, a fixed baffle 4 can be arranged with multiple movable baffles 3 spaced apart, or all of them can be arranged as movable baffles 3.

[0052] Furthermore, in this embodiment, the movable baffle 3 is provided with a fixed baffle 10 and a rotating baffle 11. The rotating baffle 11 can rotate along the rotation axis under the drive of the driving device 2 to adjust the opening of the traversing channel, thereby changing the width of the vertical slit and adjusting the water flow rate. In other embodiments, the movable baffle 3 may be provided with only a plurality of rotating baffles 11, such as two. The two rotating baffles 11 can rotate to the same side or opposite sides to adjust the opening of the traversing channel. Similarly, in other embodiments, the fixed baffle 4 may also be provided with a fixed baffle 10 or a rotating baffle 11.

[0053] The flow rate adjustable fishway provided in this embodiment can adjust the water flow rate by changing the distance between the fixed baffle 4 and the movable baffle 3. On the other hand, the movable baffle 3 is divided into two parts: a fixed baffle 10 and a rotating baffle 11. The rotating baffle 11 can be driven by the driving device 2 to rotate along the rotation axis by a certain angle, thereby changing the width of the migratory channel and further adjusting the water flow rate more precisely.

[0054] This structural design allows for several advantages: First, the walking mechanism 5 can adjust the distance between the movable baffles 3, thereby regulating the flow rate to meet the migration needs of different fish species and significantly improve the efficiency of the fishway. Second, the movable baffles 3 are also equipped with rotating baffles 11, which can adjust the size of the migration channel by adjusting the rotation angle of the rotating baffles 11, thus enabling continuous dynamic control of the water flow rate. Third, the walking mechanism 5 controls the movement of the movable baffles 3, and combined with the anti-tipping wheels 8 and the clamping and locking mechanism 9, it ensures the stability of the movable baffles 3 under the impact of high-speed water flow, avoids flow rate fluctuations caused by vibration or displacement deviation, and ensures adjustment accuracy.

[0055] Second Embodiment

[0056] This embodiment provides a flow rate adjustable fishway, which is roughly the same as the flow rate adjustable fishway in the first embodiment. The difference is that in this embodiment, each movable partition 3 is connected as a whole by a chain. When the walking mechanism 5 moves, it can drive several movable partitions 3 to move as a whole, which reduces energy consumption while supporting segmented control of large-scale fishways.

[0057] The specific embodiments of this application have been described above. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application.

Claims

1. A fishway with adjustable flow rate, characterized in that, It includes several movable partitions (3), guide rails (1), drive devices (2) and walking mechanisms (5). The guide rails (1) are set on the side of the fishway. The movable partitions (3) are provided with migratory channels and are arranged in the fishway along the direction of water flow. The walking mechanism (5) can drive the movable partitions (3) to move along the guide rails (1) in the fishway under the drive of the drive devices (2), thereby adjusting the distance between the movable partitions (3) and adjusting the water flow rate.

2. The flow rate adjustable fishway according to claim 1, characterized in that, The walking mechanism (5) includes a speed reducer (6), a walking wheel (7) and a braking device. The walking mechanism (5) can move on the guide rail (1) via the walking wheel (7).

3. The adjustable flow rate fishway according to claim 1, characterized in that, The walking mechanism (5) also includes an anti-tipping wheel (8), which can ensure the stability of the moving partition (3) when it is impacted by water flow.

4. The adjustable flow rate fishway according to claim 1, characterized in that, Several movable partitions (3) are connected by chains, and the walking mechanism (5) can drive several movable partitions (3) to move as a whole when it moves.

5. The adjustable flow rate fishway according to claim 1, characterized in that, The guide rail (1) is provided with a clamping and locking mechanism (9), which can clamp the guide rail (1) to prevent the walking mechanism (5) from sliding on the guide rail (1) and causing the moving partition (3) to shift.

6. The adjustable flow rate fishway according to claim 1, characterized in that, The movable partition (3) includes a fixed baffle (10) and / or a rotating baffle (11), the rotating baffle (11) being able to rotate along the rotation axis to adjust the size of the backflow channel.

7. The adjustable flow rate fishway according to claim 1, characterized in that, The movable partition (3) is provided with at least two rotating baffles (11), which can rotate along the rotation axis to adjust the size of the backflow channel.

8. The adjustable flow rate fishway according to claim 1, characterized in that, It also includes a fixed partition (4), which has a migration channel and is arranged in the fishway along the direction of water flow. The water flow rate can be adjusted by adjusting the distance between the fixed partition (4) and the movable partition (3).

9. The adjustable flow rate fishway according to claim 8, characterized in that, The fixed partition (4) and the movable partition (3) are arranged alternately.

10. The adjustable flow rate fishway according to claim 8, characterized in that, The fixed partition (4) includes a fixed baffle (10) and / or a rotating baffle (11), the rotating baffle (11) being able to rotate along the rotation axis to adjust the size of the reflux channel.

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