Layered controllable water intake device

Abstract

The utility model discloses a layered controllable water taking equipment, the layered controllable water taking equipment includes: door frame subassembly is equipped with a plurality of water taking mouth that sets up along the height direction interval in proper order on the door frame subassembly, and the movable gate is arranged in each water taking mouth, a plurality of drive mechanism, a plurality of drive mechanism with a plurality of gate one to one correspondence, drive mechanism with gate transmission connection is used for driving gate opens or closes water taking mouth, wherein, the gate includes the first end and the second end who sets up opposite along the length direction, when the gate closes water taking mouth, the first end is located the second end top, the thickness of gate is gradually wide again gradually narrow's tendency change in the direction from the first end to the second end. According to the layered controllable water taking equipment of the application, the water flow can enter the water taking mouth more smoothly, reduces the impact and turbulence, improves the water taking efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stratified water intake technology, and in particular to a stratified controllable water intake device. Background Technology

[0002] In my country, the development of water conservancy and hydropower projects is closely linked to ecological environmental protection. Currently, when water conservancy and hydropower projects divert water downstream, water quality and temperature must strictly meet standards to maintain the stability of downstream ecosystems and meet diverse water demand. This is especially true for large-scale water conservancy and hydropower projects, whose reservoirs are often quite deep, with intake structures often buried deep underwater to fully utilize the stored water. However, reservoir water exhibits significant vertical stratification; the bottom water drawn from deeper intakes is often colder and has mineral content exceeding standards, which negatively impacts downstream ecological environments, agricultural irrigation, and industrial water use.

[0003] The gate design in multi-layered intake channel technology faces challenges. Since the channel needs to accommodate water intake from different water layers, the design of each gate is crucial. However, existing gates are mostly of uniform thickness. In high dam reservoirs, water pressure increases exponentially with depth, and gates of ordinary thickness cannot withstand the immense pressure, easily leading to structural damage. Increasing the overall gate thickness to ensure strength would significantly increase construction costs and installation difficulty, and in some cases, it would be impossible due to the unique geographical and engineering conditions of high dam reservoirs. Furthermore, gates of uniform thickness cannot effectively guide water flows with different velocities and flow rates, resulting in turbulent flow and affecting water intake efficiency and quality.

[0004] Therefore, there is an urgent need for a new type of stratified controllable water intake equipment. Utility Model Content

[0005] The main purpose of this utility model is to provide a layered controllable water intake device to solve the problem that the gate of the existing layered controllable water intake device cannot match the water pressure changes at different depths and cannot effectively guide water flow with different velocities and flow rates.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The stratified controllable water intake device according to this application includes:

[0008] A door frame assembly, wherein the door frame assembly is provided with a plurality of water inlets arranged at intervals along the height direction, and each water inlet is provided with a movable gate;

[0009] Multiple driving mechanisms are provided, each corresponding to one of the multiple gates. The driving mechanisms are connected to the gates to drive the gates to open or close the water intake. Each gate includes a first end and a second end that are arranged opposite each other along its length. When the gate closes the water intake, the first end is located above the second end. The thickness of the gate gradually increases and then gradually decreases in the direction from the first end to the second end.

[0010] According to the layered controllable water intake device of this application, the gate includes a first surface and a second surface disposed opposite to each other. When the gate closes the water intake, the first surface is on the outside, and when the gate opens the water intake, the first surface is below the second surface. The first surface is in the shape of a protruding arc relative to the second surface.

[0011] Optionally, the second surface and the first surface are symmetrically arranged along the central axis of the gate along its length direction.

[0012] Optionally, the width of the first end is greater than the width of the second end.

[0013] Optionally, a rotating shaft is provided inside the water intake, and the gate is connected to the rotating shaft and can rotate with the rotating shaft. The distance between the rotating shaft and the first end is less than the distance between the rotating shaft and the second end.

[0014] Optionally, the height of the gate is L, and the distance between the connection position of the rotating shaft and the gate and the first end is D, where 0.3L≤D<0.5L.

[0015] Optionally, both the first surface and the second surface are provided with a plurality of guide plates, which are spaced apart along the width direction of the gate.

[0016] Optionally, a plurality of the guide plates are disposed on the portion of the gate located between the rotating shaft and the second end.

[0017] According to the layered controllable water intake device of this application, the gate has a hollow cavity, and a supporting frame is provided inside the hollow cavity.

[0018] The technical solution provided by the utility model embodiments has the following advantages compared with the prior art:

[0019] The layered controllable water intake device provided in this embodiment addresses the differences in water quality and temperature at different depths in a reservoir. By configuring multiple gates and corresponding drive mechanisms, each gate at the intake can be independently controlled, enabling precise water intake from different water layers. Furthermore, a malfunction in one drive mechanism does not affect the operation of the others, improving reliability. Initially, the first, thinner end of the gate opens first. This thinner end provides less initial obstruction to the water flow, allowing it to enter the intake more smoothly and reducing the impact and turbulence caused by sudden contact with a thicker structure. As the gate opens from the first end to the second, the water gradually penetrates deeper into the intake, causing changes in water pressure and velocity. In the intermediate stage, the gate thickness gradually increases. This is because the water pressure tends to increase with depth, and the increased thickness better withstands this pressure, ensuring the stability of the gate structure and preventing deformation or damage due to excessive pressure. Additionally, the increased thickness also buffers and slows the water flow. When the water flow velocity is relatively high, the increased thickness increases the contact area between the water flow and the gate. According to the momentum theorem, the water flow velocity is slowed down, which helps reduce turbulence and allows the water to pass through the intake more smoothly. Near the second end of the gate, the thickness gradually narrows again. At this point, the water flow has already been buffered and adjusted within the intake. The narrowing thickness allows the water to flow out faster, preventing stagnation or vortices at the intake end and guiding the water flow to concentrate and flow out quickly, maintaining smooth flow. Attached Figure Description

[0020] Figure 1 A schematic diagram of the gate closing the water intake of a layered controllable water intake device provided in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the gate opening of the water intake of a layered controllable water intake device provided in an embodiment of the present invention.

[0022] Labeling: Gate 10, First end A, Second end B, First surface 11, Second surface 12, Guide plate 13, Rotating shaft 20, Gate frame assembly 30, Intake 31. Detailed Implementation

[0023] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] like Figure 1 and Figure 2As shown, the layered controllable water intake device according to an embodiment of this application includes a door frame assembly 30 and a plurality of drive mechanisms.

[0025] Specifically, the gate frame assembly 30 is provided with a plurality of water intakes 31 arranged sequentially at intervals along the height direction, and each water intake 31 is provided with a movable gate 10; a plurality of drive mechanisms correspond one-to-one with a plurality of gates 10, and the drive mechanisms are connected to the gates 10 for driving the gates 10 to open or close the water intakes 31. The gates 10 include a first end A and a second end B arranged opposite to each other along the length direction. When the gates 10 close the water intakes 31, the first end A is located above the second end B, and the thickness of the gates 10 gradually widens and then gradually narrows in the direction from the first end A to the second end B.

[0026] According to the layered controllable water intake device provided in this application embodiment, since the water quality and temperature vary at different depths in the reservoir, multiple gates 10 and multiple drive mechanisms are set up one-to-one, allowing each gate 10 at the water intake 31 to be independently controlled. This enables precise water intake from different water layers, and the failure of one drive mechanism will not affect the operation of the other drive mechanisms, improving reliability. Initially, the first end A at the top of the gate 10 opens first, as this end is thinner. The thinner first end A provides less initial obstruction to the water flow, allowing it to enter the water intake 31 more smoothly, reducing the impact and turbulence caused by sudden contact with a thick structure. As the gate 10 opens from the first end A to the second end B, the water flow gradually penetrates deeper into the water intake 31, and the water pressure and flow velocity change. In the intermediate stage, the gate 10 gradually widens. This is because, firstly, the water pressure tends to increase as the water flow deepens, and the increased thickness can better withstand the water pressure, ensuring the stability of the gate 10 structure and preventing deformation or damage due to excessive water pressure. Secondly, the increased thickness can also buffer and slow down the water flow. When the water flow velocity is high, the increased thickness increases the contact area between the water flow and the gate 10. According to the momentum theorem, the water flow velocity is slowed down, which helps to reduce water flow turbulence and allows the water flow to pass through the intake 31 more smoothly. Near the second end B of the gate 10, the thickness gradually narrows again. At this point, the water flow has already been buffered and adjusted within the intake 31. The narrowing thickness allows the water flow to accelerate outward, preventing the water flow from stagnating or forming vortices at the end of the intake 31, guiding the water flow to concentrate and flow out quickly, maintaining the smoothness of the water flow.

[0027] In some embodiments, the drive mechanism is located inside the water intake 31, which facilitates the arrangement of the relevant drive motor and transmission components. The drive motor is an existing underwater electric motor.

[0028] like Figure 1 and Figure 2As shown, in the layered controllable water intake device according to the embodiment of this application, the gate 10 includes a first surface 11 and a second surface 12 disposed opposite to each other. When the gate 10 closes the water intake 31, the first surface 11 is on the outside. When the gate 10 opens the water intake 31, the first surface 11 is located below the second surface 12. The first surface 11 is in the shape of a protruding arc relative to the second surface 12.

[0029] In detail, when the gate 10 is opened, the first surface 11 is located below the second surface 12. The arc-shaped surface guides the water flow downwards, preventing the water flow from forming backflow or vortex at the bottom, making the water flow transition more natural and smooth, which helps to maintain the uniformity of the water flow speed.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the second surface 12 and the first surface 11 are symmetrically arranged along the central axis of the length direction of the gate 10.

[0031] In detail, the first surface 11 and the second surface 12 are symmetrical along the central axis, ensuring that the gate 10 is subjected to uniform force under the impact of water flow. Even when the water flow velocity is variable and the direction is complex, the symmetrical structure can prevent the gate 10 from twisting or displacing due to uneven force, maintain the gate 10 in a stable open state, and ensure the continuity and safety of the water intake process. When the water flow impact force increases significantly during the flood season, the gate 10 with the symmetrical structure can still operate stably, ensuring that water intake is not affected.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments, the width of the first end A is greater than the width of the second end B.

[0033] In the above embodiment, the width of the first end A is greater than the width of the second end B, and the second end B is located below the first end A. The wider upper part increases the weight and cross-sectional area of ​​the first end A of the gate 10, causing the center of gravity of the gate 10 to shift downward, making it more stable under the impact of water flow. When water flow impacts the gate 10, the first end A can better resist the horizontal impact force of the water flow, preventing the gate 10 from shaking or displacing due to the action of water flow. This stability advantage is particularly obvious in high-velocity water flow areas, which can effectively extend the service life of the gate 10 and ensure the long-term reliable operation of the water intake device. The narrower second end B reduces the obstruction of water flow when passing through the second end B. When the water flows through the second end B, it can leave the gate 10 more smoothly, reducing friction and vortex formation between the water flow and the gate 10. According to the principles of fluid mechanics, this reduces the water flow resistance, thereby reducing the head loss when the water flows through the gate 10.

[0034] like Figure 1 and Figure 2As shown, in some embodiments, a rotating shaft 20 is provided inside the water intake 31. The gate 10 is connected to the rotating shaft 20 and can rotate with the rotating shaft 20. The distance between the rotating shaft 20 and the first end A is less than the distance between the rotating shaft 20 and the second end B. When opened, because the rotating shaft 20 is close to the first end A, and the first end A is close to the rotating shaft 20, a smaller force is enough to make the first end A move first under the action of the driving force. At this time, the gate 10 rotates around the rotating shaft 20, and the opening of the first end A is like prying the short lever arm, easily breaking the static state of the water flow at the water intake 31. The narrower second end B then opens, reducing the initial water flow resistance, and the water flow can flow into the water intake 31 more smoothly.

[0035] In some embodiments, the height of the gate 10 is L, and the distance between the connection point of the rotating shaft 20 and the gate 10 and the first end A is D, where 0.3L ≤ D < 0.5L. This ensures that the ratio of the power arm to the resistance arm is within a reasonable range during the rotation of the gate 10. When opening, the drive mechanism only needs to output a small driving force to easily rotate the gate 10, achieving energy savings. Simultaneously, the stability of the gate 10 is ensured throughout the opening and closing process, preventing jamming or shaking caused by improper positioning of the rotating shaft 20, thus improving operational reliability.

[0036] Wherein, D can be 0.3L, 0.32L, 0.34L, 0.36L, 0.38L, 0.4L, 0.42L, 0.44L, 0.46L, or 0.48L. In a specific embodiment, D is 0.382L.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, both the first surface 11 and the second surface 12 are provided with multiple guide plates 13, which are spaced apart along the width direction of the gate 10. The guide plates 13, spaced apart along the width direction on the surface of the gate 10, can reduce the impact and frictional force generated by the large-area, high-speed water flow on the surface of the gate 10, which can easily cause wear to the gate 10 over time. The presence of the guide plates 13 can change the contact mode between the water flow and the gate 10, dispersing the concentrated water flow impact force onto each guide plate 13. Simultaneously, the guide plates 13 reduce the direct friction between the water flow and the gate 10 over a large area to a certain extent, reducing the degree of wear. The large-area water flow is divided into numerous small streams. These small streams are independent yet work together, reducing lateral interference and mixing between water flows, making the overall water flow more stable and orderly.

[0038] like Figure 1 and Figure 2 As shown, in some embodiments, multiple guide plates 13 are disposed on the portion of the gate 10 located between the rotating shaft 20 and the second end B.

[0039] In the above embodiment, during the rotation and opening of the gate 10, the flow velocity and direction of the water flow in the part of the gate 10 located between the rotating shaft 20 and the second end B change significantly. The guide plate 13 can effectively rectify and guide the rapidly flowing water in this area. Through precise control of the water flow, the turbulence of the water flow in this area is reduced, ensuring the stability and uniformity of the water flow at the water intake 31, thereby improving the water quality. During long-term operation, the wear of the device caused by the water flow in this area is also effectively controlled, extending the maintenance cycle of the device and reducing maintenance costs.

[0040] According to the layered controllable water intake device of this application embodiment, the gate 10 has a hollow cavity, within which a supporting frame is installed. The hollow cavity of the gate 10 significantly reduces its overall weight. Compared to a solid structure, it reduces material usage and manufacturing costs while maintaining strength. During installation, the lighter weight lowers the requirements for installation equipment and improves installation efficiency. Maintenance is also easier, reducing maintenance difficulty. For example, in large-scale water conservancy projects, the installation time of the gate 10 with a hollow cavity design is shortened by approximately 20% compared to a solid gate 10, effectively saving construction time and costs. The supporting frame within the hollow cavity provides necessary support for the gate 10. When the gate 10 closes the water intake 31, the supporting frame is evenly distributed within the hollow cavity, effectively dispersing the pressure of the water flow on the gate 10 and enhancing its structural strength and stability. Under high water pressure, the supporting frame prevents the gate 10 from deforming due to excessive water pressure, ensuring the normal operation and long-term reliability of the gate 10. Whether in the daily operation of the reservoir or in response to extreme situations such as floods, the hollow gate 10 with a supporting frame can maintain structural integrity and ensure the safe operation of the water conservancy project.

[0041] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A stratified controllable water intake device, characterized in that, include: A door frame assembly, wherein the door frame assembly is provided with a plurality of water inlets arranged at intervals along the height direction, and each water inlet is provided with a movable gate; Multiple driving mechanisms are provided, each corresponding to one of the multiple gates. The driving mechanisms are connected to the gates to drive the gates to open or close the water intake. Each gate includes a first end and a second end that are arranged opposite each other along its length. When the gate closes the water intake, the first end is located above the second end. The thickness of the gate gradually increases and then gradually decreases in the direction from the first end to the second end.

2. The stratified controllable water intake device according to claim 1, characterized in that, The gate includes a first surface and a second surface arranged opposite to each other. When the gate closes the water intake, the first surface is on the outside. When the gate opens the water intake, the first surface is below the second surface. The first surface is in the shape of a protruding arc relative to the second surface.

3. The stratified controllable water intake device according to claim 2, characterized in that, The second surface and the first surface are symmetrically arranged along the central axis of the gate along its length.

4. The stratified controllable water intake device according to claim 3, characterized in that, The width of the first end is greater than the width of the second end.

5. The stratified controllable water intake device according to claim 4, characterized in that, A rotating shaft is provided inside the water intake, and the gate is connected to the rotating shaft and can rotate with the rotating shaft. The distance between the rotating shaft and the first end is less than the distance between the rotating shaft and the second end.

6. The stratified controllable water intake device according to claim 5, characterized in that, The height of the gate is L, and the distance between the connection position of the rotating shaft and the gate and the first end is D, where 0.3L≤D<0.5L.

7. The stratified controllable water intake device according to any one of claims 5 or 6, characterized in that, Both the first surface and the second surface are provided with a plurality of guide plates, which are spaced apart along the width direction of the gate.

8. The stratified controllable water intake device according to claim 7, characterized in that, Multiple guide plates are disposed on the portion of the gate located between the rotating shaft and the second end.

9. The stratified controllable water intake device according to any one of claims 1-6, characterized in that, The gate has a hollow cavity, and a supporting frame is installed inside the hollow cavity.

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