Layered water intake gate and operation method

Abstract

The invention relates to the technical field of water conservancy projects, and provides a layered water intake gate and an operation method.The layered water intake gate comprises a first connecting piece, a second connecting piece and a plurality of gate leaves which are sequentially stacked in the vertical direction, and the gate leaf located at the top is used for being connected with a lifting device; the left end and the right end of each gate leaf are used for being connected into a gate groove in a sliding mode, every two adjacent gate leaves are connected through the corresponding first connecting piece in a sliding mode, and each second connecting piece is used for being detachably connected between the corresponding two adjacent gate leaves so as to limit relative movement between the corresponding two adjacent gate leaves. Through the cooperation of the structures, an operator can flexibly switch the working state of the gate only by installing and removing the second connecting piece and operating the lifting device, so that the operation process is obviously simplified, an independent grabbing beam or opening and closing equipment does not need to be configured for each layer of gate leaf, the equipment investment and the maintenance cost are reduced, and the working efficiency is improved. And the operation efficiency of layered water taking is improved.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and more specifically, to a tiered water intake gate and its operation method. Background Technology

[0002] In water conservancy and hydropower projects, water temperature stratification occurs after reservoir impoundment due to slower water flow and increased water depth, especially pronounced in high dams and large reservoirs. This change in water temperature stratification disrupts the physicochemical properties of the water body and the living environment of aquatic organisms, while also affecting downstream ecological and domestic water demand. For example, urban water supply and agricultural irrigation require warmer surface water in winter to avoid chilling injury, while some industrial cooling requires cold water to improve efficiency. To address this, various stratified water intake facilities have been developed, such as multi-layered intakes, hydraulically driven flap gates, and stacked beam gates, to allow for the extraction of water from different layers according to downstream needs.

[0003] However, traditional stratified water intake facilities have significant shortcomings in practical applications. Multi-layer water intakes and hydraulically driven flap gates are usually expensive and complex in structure, increasing construction and maintenance costs. While stacked beam gates can be used to extract surface water, their operation is cumbersome, requiring adjustments to the number of stacked beam gates according to water level changes, and relying on hydraulic automatic beam grabbers to grasp the lifting lugs of each gate leaf. This results in poor flexibility and makes it difficult to efficiently and conveniently extract water from the middle and lower layers. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to improve the efficiency of stratified water intake operations and reduce costs.

[0005] This invention provides a tiered water intake gate for use in a tiered water intake system. The tiered water intake system includes a frame, a gate slot, and a lifting device. The frame is disposed on the dam surface, and the lifting device is disposed on the frame. The gate slots are disposed on the left and right sides of the dam opening. The tiered water intake gate includes a first connector, a second connector, and multiple gate leaves stacked vertically. The top gate leaf is used to connect with the lifting device. The left and right ends of the gate leaf are slidably connected to the gate slots. Adjacent gate leaves are slidably connected through the first connector. The second connector is detachably connected between adjacent gate leaves to restrict relative movement between adjacent gate leaves.

[0006] Optionally, in each pair of adjacent door leaf sections, the bottom of the upper door leaf is provided with an inner hanging plate, and the top of the lower door leaf is provided with an outer hanging plate. The inner hanging plate is provided with a first connecting hole and a second connecting hole at intervals along the vertical direction. The first connecting hole is located above the second connecting hole. The outer hanging plate is provided with an elongated hole. The length direction of the elongated hole is consistent with the vertical direction. The first connecting member is connected to the second connecting hole and the elongated hole, and the first connecting member is used to slide along the length direction of the elongated hole. The second connecting member is used to be detachably connected between the first connecting hole and the elongated hole.

[0007] Optionally, the first connector and the second connector are pin structures adapted to the second connecting hole, the first connecting hole, and the elongated hole, respectively, and the distance between the first connecting hole and the second connecting hole is equal to the length of the elongated hole.

[0008] Optionally, the door leaf is a frame structure, and the side of the frame structure facing the upstream of the water area is set as a panel to block the water flow. The inner hanging plate is set inside the frame structure, and the outer hanging plate is set outside the frame structure.

[0009] Optionally, at least two sets of the inner hanging plate and / or the outer hanging plate located on a section of the door leaf are provided, and each set of the inner hanging plate and / or the outer hanging plate includes at least two, and the installation positions of the inner hanging plate and the outer hanging plate of two adjacent sections of the door leaf correspond to each other.

[0010] Optionally, the door leaf includes a top door leaf, multiple intermediate door leaves, and a bottom door leaf connected in sequence along the vertical direction. The top of the top door leaf is provided with a lifting plate, which is used to connect with the lifting device. The installation positions of the inner and outer lifting plates on a section of the intermediate door leaf are set differently in the left and right directions.

[0011] Optionally, the intermediate door leaf includes an even-numbered intermediate door leaf and an odd-numbered intermediate door leaf that are sequentially staggered in a vertical direction. The two sets of inner hanging plates on the even-numbered intermediate door leaf are located between the two sets of outer hanging plates on the even-numbered intermediate door leaf, and the two sets of outer hanging plates on the odd-numbered intermediate door leaf are located between the two sets of inner hanging plates on the odd-numbered intermediate door leaf.

[0012] Optionally, overlapping seats are provided at the left and right ends of the gate leaf, and the stratified water intake device further includes a support seat provided on the dam surface, the overlapping seat being used to overlap the support seat.

[0013] Compared with related technologies, the tiered water intake gate provided by the present invention has the following technical advantages: The tiered water intake gate provided by this invention includes multiple gate leaves stacked vertically. By setting up a multi-section, independently adjustable gate leaf structure, the overall height of the gate can be flexibly adjusted according to water intake needs, adapting to the tiered water intake requirements under different water level conditions. The top gate leaf is connected to a lifting device, allowing the lifting device to directly drive the top gate leaf to rise and fall, thereby driving the other gate leaves in conjunction, eliminating the need for an independent opening and closing device for each gate leaf section. The left and right ends of the gate leaf are slidably connected to the gate slots, and the guiding effect of the gate slots ensures that the gate leaves remain stable during the rising and falling process, while bearing the lateral load generated by water pressure, ensuring structural safety. Adjacent gate leaf sections are slidably connected by a first connector, allowing adjacent gate leaf sections to slide relative to each other in the vertical direction, thereby forming a water passage gap when needed, allowing water to enter from the gap between the gate leaf sections. A second connector is detachably connected between adjacent gate leaf sections. When the second connector is installed, the adjacent gate leaf sections are locked and cannot move relative to each other. When the second connector is removed, the adjacent gate leaf sections can slide freely through the first connector. Through the coordinated operation of the above structures, operators can flexibly switch the gate's working state simply by installing and removing the second connecting piece and operating the lifting device: when surface water needs to be taken, part of the second connecting piece is removed, the top gate leaf is raised, and the lower gate leaves unfold sequentially to form a continuous water passage; when a specific water layer in the middle or lower reaches needs to be taken, the second connecting piece other than the target water layer is installed, the gate is lowered to the sill, and the water flow can enter through the reserved gap. This significantly simplifies the operation process, eliminating the need for independent grab beams or opening and closing devices for each gate leaf, reducing equipment investment and maintenance costs, and improving the efficiency of stratified water intake.

[0014] In addition, the present invention also provides a stratified water intake device, including a frame, a gate slot, a lifting device, a pulley device, and a stratified water intake gate as described above. The frame is set on the dam surface, the lifting device is set on the frame, the gate slot is set on the left and right sides of the dam opening, the left and right ends of the gate leaf of the stratified water intake gate are respectively slidably connected to the two gate slots, and the lifting device is connected to the gate leaf located at the top through the pulley device.

[0015] Optionally, the stratified water intake device further includes a support base disposed on the dam surface, the support base being used to support the overlapping seats at the left and right ends of the gate leaf.

[0016] Compared with related technologies, the stratified water intake equipment provided by this invention, by setting up the stratified water intake gate as described above, has roughly the same technical effect as the aforementioned stratified water intake gate, which will not be repeated here. Simultaneously, by setting up a frame on the dam surface, a stable installation foundation is provided for the lifting device, ensuring the overall structural stability of the equipment. The lifting device, set on the frame, serves as the core power source, providing driving force for the gate's lifting and lowering. Gate slots are set on the left and right sides of the dam opening, providing a precise lifting and lowering guide path for the gate, while also bearing water pressure and transmitting it to the dam body. The left and right ends of the stratified water intake gate leaf are slidably connected to the two gate slots, ensuring that the gate leaf maintains the correct position during lifting and lowering, avoiding skew and jamming. The lifting device is connected to the gate leaf located at the top via a pulley system, utilizing the labor-saving principle of the pulley system to reduce the power requirement of the lifting device and make the lifting force transmission more stable. Through the coordinated operation of the above structures, the lifting device can drive the gate to rise and fall smoothly and effortlessly. The sliding fit between the gate slot and the gate leaf ensures stability during the lifting process and effective bearing of water pressure. The pulley device further optimizes the transmission efficiency, thereby enabling the entire equipment to reliably and efficiently perform stratified water intake operations. While achieving flexible water intake, the simplified mechanical structure and reduced auxiliary equipment effectively reduce the construction and operation and maintenance costs of the project.

[0017] Furthermore, the present invention also provides a method for stratified water intake operation, applied to the stratified water intake gate as described above, comprising the following steps: When surface water needs to be taken, the hoisting device set on the frame of the stratified water intake equipment is operated according to the water level change to drive the stratified water intake gate to rise and fall, so that the gate leaf in the compressed state is below the water level and the gate leaf in the stretched state is above the water level, and the surface water passes through the top of the gate leaf in the compressed state. When it is necessary to extract water from a specific layer, a second connector is installed between the adjacent gate leaves other than the gate leaf adjacent to the target water intake layer, so that the adjacent gate leaves are relatively fixed, leaving a gap between the adjacent gate leaves of the target water intake layer, and the layered water intake gate is lowered to the bottom sill of the gate slot, and the water flows in from the gap.

[0018] Optionally, the stratified water intake device further includes a support base set on the dam surface. The step of taking water from a specific layer further includes: first raising the stratified water intake gate above the dam surface, supporting the left and right ends of the gate leaf with the support base, and then performing the installation operation of the second connecting member.

[0019] Compared with related technologies, the stratified water intake operation method provided by this invention, through the application of the aforementioned stratified water intake gate, achieves technical effects closely related to the technical effects of the aforementioned stratified water intake gate. Specifically, when surface water needs to be taken, the lifting device is operated according to the water level change, so that the compressed gate leaf is below the water level and the stretched gate leaf is above the water level, allowing surface water to pass smoothly through the top of the compressed gate leaf without the need for an independent grab beam or opening and closing device for each gate leaf, simplifying the operation process. When a specific water layer needs to be taken, a second connecting piece is installed between adjacent gate leaves other than the target water intake layer, leaving a gap between adjacent gate leaves of the target water intake layer, and then the gate is lowered to the bottom sill, allowing the water flow to accurately enter the target water layer through the reserved gap, realizing flexible access to the middle and lower water layers. By combining the above-mentioned operating methods, operators can flexibly switch the working state of the gate simply by plugging and unplugging the second connector and operating the lifting device. This eliminates the need for complex hydraulic automatic grab beams or multi-layer opening and closing equipment, thus significantly simplifying the operation process, reducing equipment investment and maintenance costs, and improving the efficiency of stratified water intake. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the planar structure of the layered water intake gate in its fully compressed state according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the fully deployed state of the layered water intake gate according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the planar structure of the layered water intake gate in an embodiment of the present invention when it draws water from a specific layer; Figure 4 This is a three-dimensional structural diagram of an even-numbered intermediate door leaf according to an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the odd-numbered intermediate door leaf according to an embodiment of the present invention; Figure 6 This is a cross-sectional structural diagram of the stratified water intake device according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 11-Top door leaf, 111-Lifting plate, 12-Even-numbered intermediate door leaf, 13-Odd-numbered intermediate door leaf, 14-Bottom door leaf, 15-First connecting piece, 16-Second connecting piece, 17-Inner hanging plate, 171-First connecting hole, 172-Second connecting hole, 18-Outer hanging plate, 181-Long strip hole, 19-Overlapping seat, 20-Frame, 30-Door groove, 40-Lifting device, 50-Pulley device, 60-Support seat, 70-Maintenance machine, 01-Dam surface. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0024] In the description of this invention, the orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "top," "bottom," "front," "back," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this invention. They are not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0027] like Figures 1 to 3As shown, this embodiment of the invention provides a tiered water intake gate, which is used for a tiered water intake device. The tiered water intake device includes a frame 20, a gate slot 30, and a lifting device 40. The frame 20 is disposed on the dam face 01, and the lifting device 40 is disposed on the frame 20. The gate slot 30 is disposed on the left and right sides of the dam opening. The tiered water intake gate includes a first connecting member 15, a second connecting member 16, and multiple gate leaves stacked vertically. The gate leaf at the top is used to connect with the lifting device 40. The left and right ends of the gate leaf are respectively used to slide and connect within the gate slot 30. Adjacent gate leaves are slidably connected through the first connecting member 15. The second connecting member 16 is used to detachably connect between adjacent gate leaves to restrict the relative movement between adjacent gate leaves.

[0028] Specifically, multiple door leaf sections are stacked vertically, and adjacent door leaves are connected by a first connector 15 and a second connector 16 to switch between two working states. The first connector 15 mainly serves as a sliding guide, allowing adjacent door leaves to slide relative to each other to form a water passage gap when needed; the second connector 16 is used to lock adjacent door leaves, keeping them relatively fixed when needed to block water flow or form a specific water intake gap. Sliding blocks or tracks that mate with the door groove 30 are provided at both ends of the door leaves to reduce frictional resistance during lifting and lowering. The door leaves adopt a frame structure, which is welded from structural steel to minimize weight while ensuring strength.

[0029] For example, in a specific application scenario of the present invention, the tiered intake gate is installed at the intake of a reservoir, requiring the intake of water at different depths according to downstream irrigation needs. The gate has a total of 6 gate leaves, from top to bottom: top gate leaf 11, four middle gate leaves, and bottom gate leaf 14. Each gate leaf has the same height. Figure 1 As shown, when not in use, the tiered intake gates are in a fully compressed state, and their total height can cover the entire range of water level variations. Figure 6 As shown, the lifting device 40 is a winch-type gate opener, connected to the top gate leaf 11 via a pulley device 50 composed of wire ropes and pulleys. Figure 2 As shown, when surface water needs to be taken, the operator only needs to remove the second connecting piece 16, that is, the entire gate is without the second connecting piece 16 installed, and start the lifting device 40 to lift the top section gate leaf 11. The lower gate leaves unfold sequentially under gravity, forming a continuous water passage from the water surface to the water intake. Then, the gate leaves can be gradually and orderly lifted according to the water consumption. Figure 3As shown, when it is necessary to take water from a specific layer, the entire layered water intake gate is raised above the dam surface 01 and supported by the support base 60. The second connector 16 is installed between each adjacent gate leaf except for the two adjacent gate leaves at the water intake layer position, so that they are relatively fixed and cannot slide. The second connector 16 is not installed between the two adjacent gate leaves at the water intake layer position. Then the gate is lowered to the bottom sill of the gate slot 30, and the water flow can enter the water intake from the gap between the two adjacent gate leaves at the water intake layer position.

[0030] It should be noted that, as Figures 3 to 5 As shown, the first connector 15 and the second connector 16 can use the same pin structure to simplify the types of spare parts and reduce maintenance costs. During operation, different functions can be achieved simply by inserting the pin into different connecting holes: when the pin is inserted only into the lower second connecting hole 172 and the elongated hole 181, it functions as the first connector 15, allowing relative sliding; when the pin is inserted into both the upper first connecting hole 171 and the elongated hole 181, it functions as the second connector 16, restricting relative movement. This design makes the conversion of connector functions extremely simple.

[0031] In this embodiment, by setting multiple gate leaves stacked vertically, the overall height of the gate can be flexibly adjusted according to water intake needs, adapting to the stratified water intake requirements under different water level conditions. The gate leaf at the top is connected to the lifting device 40, allowing the lifting device 40 to directly drive the top gate leaf to rise and fall, thereby driving the other gate leaves in linkage, without the need to equip each gate leaf with an independent opening and closing device. The left and right ends of the gate leaf are slidably connected in the gate groove 30, and the guiding effect of the gate groove 30 ensures that the gate leaf remains stable during the rising and falling process, while bearing the lateral load generated by water pressure, ensuring structural safety. Adjacent gate leaves are slidably connected by the first connector 15, allowing adjacent gate leaves to slide relative to each other in the vertical direction, thereby forming a water passage gap when needed, allowing water to enter from the gap between the gate leaves. The second connector 16 is detachably connected between adjacent gate leaves. When the second connector 16 is installed, the adjacent gate leaves are locked and cannot move relative to each other. When the second connector 16 is removed, the adjacent gate leaves can slide freely through the first connector 15. Through the coordinated operation of the above structures, operators can flexibly switch the gate's working state simply by inserting and removing the second connector 16 and operating the lifting device 40: when surface water needs to be taken, part of the second connector 16 is removed, the top gate leaf is raised, and the lower gate leaves unfold sequentially to form a continuous water passage; when a specific water layer in the middle or lower reaches needs to be taken, the second connector 16 except for the target water layer is installed, the gate is lowered to the bottom sill, and the water flow can enter through the reserved gap. This significantly simplifies the operation process, eliminating the need for independent grab beams or opening and closing devices for each gate leaf, reducing equipment investment and maintenance costs, and improving the efficiency of stratified water intake.

[0032] Optionally, such as Figures 1 to 5 As shown, in each pair of adjacent door leaf sections, the bottom of the upper door leaf is provided with an inner hanging plate 17, and the top of the lower door leaf is provided with an outer hanging plate 18. The inner hanging plate 17 is provided with a first connecting hole 171 and a second connecting hole 172 at intervals along the vertical direction. The first connecting hole 171 is located above the second connecting hole 172. The outer hanging plate 18 is provided with an elongated hole 181. The length direction of the elongated hole 181 is consistent with the vertical direction. The first connecting member 15 is connected to the second connecting hole 172 and the elongated hole 181, and the first connecting member 15 is used to slide along the length direction of the elongated hole 181. The second connecting member 16 is used to detachably connect between the first connecting hole 171 and the elongated hole 181.

[0033] Specifically, the inner hanging plate 17 is located at the bottom of the upper door leaf in two adjacent door leaf sections, and the outer hanging plate 18 is located at the top of the lower door leaf, forming a connection node. The inner hanging plate 17 has a first connecting hole 171 and a second connecting hole 172 spaced vertically, with the first connecting hole 171 located at the top and the second connecting hole 172 at the bottom. The outer hanging plate 18 has an elongated hole 181, the length of which is aligned with the vertical direction. When the first connecting member 15 is connected to the second connecting hole 172 and the elongated hole 181, relative sliding between adjacent door leaves is possible because the elongated hole 181 provides vertical movement space. When the second connecting member 16 is connected to the first connecting hole 171 and the elongated hole 181, the two connecting members work together to lock the inner and outer hanging plates, restricting relative movement. Both the inner hanging plate 17 and the outer hanging plate 18 are made of high-strength steel to ensure the load-bearing capacity of the connection node.

[0034] In this embodiment, the cooperative structure of the inner hanging plate 17 and the outer hanging plate 18, along with the positional design of the first connecting hole 171, the second connecting hole 172, and the elongated hole 181, allows for sliding and locking connections between adjacent door leaves to be achieved through the same set of hanging plate structures. This results in a compact structure and convenient manufacturing. When the first connecting member 15 slides in the elongated hole 181, the length of the elongated hole 181 limits the maximum relative displacement of adjacent door leaves, ensuring that the door leaves will not detach when unfolded. Simultaneously, it ensures that each section of the door leaf can unfold sequentially, improving the reliability and safety of operation.

[0035] Optionally, such as Figures 1 to 5 As shown, the first connector 15 and the second connector 16 are pin structures adapted to the second connecting hole 172, the first connecting hole 171, and the elongated hole 181, respectively, and the distance between the first connecting hole 171 and the second connecting hole 172 is equal to the length of the elongated hole 181.

[0036] Specifically, the first connector 15 and the second connector 16 adopt a pin structure, which is simple in structure, easy to assemble and disassemble, and has a strong load-bearing capacity. The first connecting hole 171 and the second connecting hole 172 are both round holes, adapted to the pin; the elongated hole 181 extends vertically, and its width matches the diameter of the pin, allowing the pin to slide smoothly within the elongated hole 181 without lateral wobbling. The distance between the first connecting hole 171 and the second connecting hole 172 is equal to the length of the elongated hole 181. This dimensional relationship ensures that when the second connector 16 is inserted into the first connecting hole 171 and the elongated hole 181, adjacent door leaves are exactly at their limit positions of complete contact or complete expansion, with no redundant gaps. One end of the pin is equipped with an anti-disengagement baffle, and the other end is equipped with a cotter pin to prevent the pin from accidentally falling off during use.

[0037] In this embodiment, by setting the first connector 15 and the second connector 16 as a pin structure, and limiting the distance between the first connecting hole 171 and the second connecting hole 172 to be equal to the length of the elongated hole 181, the operator can switch the gate leaf state simply by inserting and removing the pin, making the operation simple and quick. The consistency of dimensions ensures that the gate leaf can fit tightly in the compressed state and form a stable water passage in the unfolded state, improving the gate's sealing performance and water passage stability.

[0038] Optionally, such as Figure 2 , Figure 4 and Figure 5 As shown, the door leaf is a frame structure, and the side of the frame structure facing the upstream of the water area is set as a panel to block the water flow. The inner hanging plate 17 is set inside the frame structure, and the outer hanging plate 18 is set outside the frame structure.

[0039] Specifically, the gate leaf adopts a frame structure, consisting of crossbeams, longitudinal beams, and diagonal braces. A panel is installed on the upstream side facing the water, directly bearing the water pressure and transmitting it to the frame. The inner hanging plate 17 is located inside the frame structure, on the back side of the panel, protected by the frame and less susceptible to damage from floating debris in the water flow. The outer hanging plate 18 is located outside the frame structure, on the top outer side of the gate leaf, facilitating connection and disassembly with the inner hanging plate 17 of the upper gate leaf. A continuous weld seam connects the panel and the frame to ensure watertightness. The back of the frame structure typically lacks a panel to reduce weight and facilitate maintenance.

[0040] In this embodiment, by setting the gate leaf as a frame structure and setting a panel on the upstream side, both the structural strength and water-blocking performance of the gate are ensured, while the overall weight is reduced. The layout of the inner hanging plate 17 being set inside the frame and the outer hanging plate 18 being set outside the frame protects the connecting structure, facilitates operation, extends service life, and improves maintenance convenience.

[0041] Optionally, such as Figure 2 , Figure 4 and Figure 5 As shown, at least two sets of the inner hanging plate 17 and / or the outer hanging plate 18 located on a section of the door leaf are provided respectively. Each set of the inner hanging plate 17 and / or the outer hanging plate 18 includes at least two, and the installation positions of the inner hanging plate 17 and the outer hanging plate 18 of two adjacent sections of the door leaf correspond to each other.

[0042] Specifically, at least two sets of inner hanging plates 17 and outer hanging plates 18 can be provided on a single door leaf section, each set including at least two hanging plates. For example, two sets of inner hanging plates 17 can be spaced apart in the left-right direction of the door leaf, each set including two hanging plates arranged in the left-right direction to enhance the stability and load-bearing capacity of the connection. The hanging plate installation positions of adjacent door leaf sections correspond to ensure that the inner and outer hanging plates can be accurately aligned and connected. The design of multiple sets of hanging plates allows the connection node to form multi-point support, improving the torsional resistance.

[0043] In this embodiment, by setting multiple sets of inner hanging plates 17 and outer hanging plates 18, the number of connection nodes between adjacent gate leaves is increased, the load is distributed, and the reliability and torsional resistance of the connection are improved. The design of multiple hanging plates makes the gate more evenly stressed when subjected to water pressure or lifting force, reduces local stress concentration, and extends the service life of the gate, which is especially suitable for the stratified water intake needs in large or deep water conditions.

[0044] Optionally, such as Figure 2 , Figure 4 and Figure 5 As shown, the door leaf includes a top door leaf 11, multiple middle door leaves and a bottom door leaf 14 connected in sequence along the vertical direction. The top of the top door leaf 11 is provided with a lifting plate 111, which is used to connect with the lifting device 40. The installation positions of the inner lifting plate 17 and the outer lifting plate 18 on a middle door leaf are set differently in the left and right directions.

[0045] Specifically, the door leaf includes a top door leaf 11, multiple intermediate door leaves, and a bottom door leaf 14. A lifting plate 111 is installed at the top of the top door leaf 11, with lifting holes for connection to the pulley device 50 and the lifting device 40. The inner and outer hanging plates 17 and 18 on an intermediate door leaf are positioned differently in the left-right direction, i.e., they are staggered in horizontal projection to avoid structural interference and provide a basis for subsequent alternating connections. The bottom of the top door leaf 11 has only an inner hanging plate 17 for connection to the lower door leaf; the top of the bottom door leaf 14 has only an outer hanging plate 18 for connection to the upper door leaf.

[0046] In this embodiment, by staggering the inner hanging plate 17 and outer hanging plate 18 on the middle gate leaf in the left-right direction, the connection nodes between adjacent gate leaves can be reasonably arranged in a limited space, avoiding interference between the hanging plates, and creating conditions for forming an interlaced connection structure. The lifting plate 111 is set on the top of the top section gate leaf 11, which facilitates connection with the lifting device 40, so that the lifting force can be evenly transmitted to the entire gate.

[0047] Optionally, such as Figure 2 , Figure 4 and Figure 5 As shown, the intermediate door leaf includes an even-numbered intermediate door leaf 12 and an odd-numbered intermediate door leaf 13 that are connected in a vertically staggered manner. The two sets of inner hanging plates 17 on the even-numbered intermediate door leaf 12 are located between the two sets of outer hanging plates 18 of the same even-numbered intermediate door leaf 12, and the two sets of outer hanging plates 18 on the odd-numbered intermediate door leaf 13 are located between the two sets of inner hanging plates 17 of the same odd-numbered intermediate door leaf 13.

[0048] Specifically, the intermediate door leaf includes even-numbered intermediate door leaf sections 12 and odd-numbered intermediate door leaf sections 13, which are sequentially staggered along the vertical direction. The two sets of inner hanging plates 17 on the even-numbered intermediate door leaf sections 12 are located between the two sets of outer hanging plates 18 of that section, while the two sets of outer hanging plates 18 on the odd-numbered intermediate door leaf sections 13 are located between the two sets of inner hanging plates 17 of that section. This staggered arrangement allows the inner and outer hanging plates of adjacent door leaves to nest and cooperate with each other, forming a stable connection chain. In the vertical direction, the inner hanging plates 17 and outer hanging plates 18 are arranged alternately, ensuring a uniform distribution of the connection nodes.

[0049] In this embodiment, the alternating connection of even-numbered intermediate gate leaves 12 and odd-numbered intermediate gate leaves 13, along with the nested arrangement of inner and outer hanging plates, makes the entire gate's connection structure more compact and stable. The connection nodes between each gate leaf are evenly distributed in both the vertical and horizontal directions, effectively enhancing the overall rigidity and deformation resistance of the gate. Simultaneously, this staggered structure ensures a stable spacing between the gate leaves when they are deployed, forming a regular water passage and improving water intake efficiency.

[0050] Optionally, such as Figure 1 , Figure 4 and Figure 5 As shown, overlapping seats 19 are respectively provided at the left and right ends of the gate leaf. The stratified water intake device also includes a support seat 60 provided on the dam surface 01. The overlapping seats 19 are used to overlap the support seat 60.

[0051] Specifically, overlapping seats 19 are provided at both ends of the gate leaf. These overlapping seats 19 are typically outward-protruding steel structural members with flat supporting surfaces. They are used to overlap the support seats 60 on the dam surface 01 when the gate is raised above it, achieving temporary locking of the gate and facilitating operations such as pin assembly and disassembly. The overlapping seats 19 are connected to the gate leaf frame using reinforcing ribs to improve load-bearing capacity. The number and position of the overlapping seats 19 correspond to the support seats 60; typically, one pair of overlapping seats 19 is provided per gate leaf section, located at the left and right ends respectively.

[0052] In this embodiment, by setting overlapping seats 19 at both ends of the gate leaf and cooperating with the support seats 60 on the dam surface 01, the gate can be stably placed when it is lifted above the dam surface 01 without relying on the lifting device 40 to continuously bear the load. This saves energy and provides a safe and stable working environment for operators, making it easier to adjust the state of the gate leaf.

[0053] In addition, such as Figure 6 As shown, another embodiment of the present invention provides a stratified water intake device, including a frame 20, a gate slot 30, a lifting device 40, a pulley device 50, and a stratified water intake gate as described above. The frame 20 is disposed on the dam surface 01, the lifting device 40 is disposed on the frame 20, the gate slot 30 is disposed on the left and right sides of the dam opening, and the left and right ends of the gate leaf of the stratified water intake gate are respectively slidably connected to the two gate slots 30. The lifting device 40 is connected to the gate leaf located at the top through the pulley device 50.

[0054] Specifically, the frame 20 is installed on the dam face 01, using a reinforced concrete or steel structure, to support the lifting device 40 and bear the lifting load. Gate slots 30 are located on the left and right sides of the dam opening, extending vertically, and contain guide rails that cooperate with the gate leaves; they are typically made of stainless steel or wear-resistant steel. The lifting device 40 is connected to the top gate leaf of the tiered intake gate via a pulley device 50, which includes movable and fixed pulleys and ropes, reducing lifting force and improving lifting efficiency. The lifting device 40 can be a winch-type gate hoist or a hydraulic gate hoist, with specific specifications determined based on the gate weight and stroke. A maintenance machine 70 is also installed on the frame 20, above the lifting device 40, to facilitate the inspection and maintenance of the device.

[0055] Exemplarily, in one specific embodiment of the present invention, the frame 20 adopts a reinforced concrete frame structure, with an installation platform for the lifting device 40 at the top. The gate slot 30 is embedded in the concrete on both sides of the dam opening, extending from the bottom sill to above the dam surface 01. The lifting device 40 adopts a double-lifting-point winch-type gate opener, which is connected to two sets of lifting plates 111 on the top section gate leaf 11 through two sets of pulley devices 50. The pulley devices 50 adopt a 6-fold pulley block, which reduces the lifting force to 1 / 6 of the gate's own weight, allowing for the use of a smaller lifting device 40 and reducing equipment costs.

[0056] It should be noted that the control system of the lifting device 40 can be integrated with the reservoir's water level monitoring system to achieve automated operation. When the reservoir water level changes, the control system automatically adjusts the number of gate sections according to a preset program to ensure that surface water is always drawn, without manual intervention. The pulley device 50 can be optimized according to the gate weight and the specifications of the lifting device 40 to achieve the best economy and reliability.

[0057] In this embodiment, the stratified water intake equipment provided by this embodiment, by setting the stratified water intake gate as described above, has roughly the same technical effect as the stratified water intake gate described above, and will not be repeated here. At the same time, by setting the frame 20, gate slot 30, lifting device 40, pulley device 50 and the aforementioned stratified water intake gate, the frame 20 is set on the dam surface 01, providing a stable installation foundation for the lifting device 40 and ensuring the stability of the overall structure of the equipment; the lifting device 40 is set on the frame 20, serving as the core power source. The water source provides the driving force for the gate's lifting and lowering. Gate slots 30 are located on the left and right sides of the dam opening, providing a precise lifting and lowering guide path for the gate, while also bearing water pressure and transmitting it to the dam body. The left and right ends of the gate leaves of the tiered water intake gate are slidably connected to the two gate slots 30, ensuring the gate leaves maintain the correct position during lifting and lowering, preventing skewing and jamming. The lifting device 40 is connected to the gate leaf at the top via a pulley device 50. Utilizing the labor-saving principle of the pulley device 50, the power requirement of the lifting device 40 is reduced, while the lifting force transmission is made more stable. Through the coordinated operation of the above structures, the lifting device 40 can smoothly and labor-savingly drive the gate's lifting and lowering. The sliding cooperation between the gate slots 30 and the gate leaves ensures stability during lifting and lowering and effective bearing of water pressure. The pulley device 50 further optimizes transmission efficiency, enabling the entire equipment to reliably and efficiently perform tiered water intake operations. While achieving flexible water intake, the simplified mechanical structure and reduced auxiliary equipment effectively reduce engineering construction and operation and maintenance costs.

[0058] Optionally, such as Figure 6 As shown, the stratified water intake device also includes a support base 60 disposed on the dam surface 01, the support base 60 being used to support the overlapping seats 19 at the left and right ends of the gate leaf.

[0059] Specifically, the support seat 60 is installed on the dam face 01, typically above or beside the gate slot 30, corresponding to the overlapping seat 19 on the gate leaf. The support seat 60 is rotatable. During the gate's ascent to the predetermined height, the overlapping seat 19 does not interfere with the support seat. When the gate reaches the predetermined height, the support seat 60 is rotated to lie below the overlapping seat 19, which then rests on the support seat 60. The support seat 60 bears the weight of the gate and provides stable support. The support seat 60 is made of high-strength steel with a wear-resistant layer on its surface to reduce wear during overlapping. The height of the support seat 60 is adjustable to facilitate adjustment of the gate's placement position.

[0060] In this embodiment, the support base 60 and the connecting seat 19 cooperate to provide a reliable maintenance and operation position for the gate. When the gate leaf status needs to be adjusted (such as installing or removing the second connecting piece 16), the gate can be lifted to the support base 60 and placed there, and the lifting device 40 can be temporarily unloaded, which reduces energy consumption and improves operational safety. The support base 60 makes the operation of the stratified water intake equipment more flexible, safe, and convenient.

[0061] In addition, this embodiment of the invention also provides a method for stratified water intake operation, which is applied to the stratified water intake gate as described above.

[0062] Specifically, the operation method includes two main operating conditions: surface water intake and specific layer water intake.

[0063] In surface water intake operations, operators first determine the required depth of surface water to be extracted based on real-time monitored water level information. For example... Figure 1 As shown, when the stratified intake gate is in full compression, each gate leaf is tightly fitted, blocking the water flow. When surface water needs to be drawn, the operator removes all second connecting parts 16 (i.e., the entire gate is without second connecting parts 16), and then starts the lifting device 40 to lift the top gate leaf 11 via the pulley device 50. During the lifting process, since adjacent gate leaves are only slidably connected by the first connecting part 15, the lower gate leaves unfold sequentially under gravity, forming a structure as shown in the diagram. Figure 2 The diagram shows the fully extended state. The operator controls the lifting height based on the water level, ensuring the compressed door leaf (i.e., the unexpanded door leaf) is below the water level, and the extended door leaf is above the water level. At this point, surface water can pass through the gap between the top of the compressed door leaf and the bottom of the extended door leaf, entering the water intake. As the water level changes, the operator can adjust the lifting height of the hoisting device 40 in real time, changing the number of sections of the compressed door leaf to always maintain surface water intake.

[0064] Under specific water intake conditions, such as Figure 3 and Figure 6As shown, the stratified water intake equipment also includes a support base 60 set on the dam surface 01. The operator first lifts the stratified water intake gate as a whole above the dam surface 01 until the overlapping seats 19 at both ends of the gate leaf are higher than the support base 60. Then, the support base 60 is rotated or adjusted to be below the overlapping seats 19, and the gate is slowly lowered so that the overlapping seats 19 are placed stably on the support base 60, achieving temporary locking of the gate. At this time, the operator can safely perform the pin assembly and disassembly operation: a second connecting piece 16 is installed between each adjacent gate leaf except for the adjacent gate leaf of the target water intake layer, so that these adjacent gate leaves are relatively fixed and cannot slide relative to each other; while the second connecting piece 16 is not installed between the adjacent gate leaves of the target water intake layer, only the first connecting piece 15 is retained for connection. After the installation is completed, the lifting device 40 is started again to slightly lift the gate from the support base 60, rotate the support base 60 to move it away, and then lower the gate to the bottom sill of the gate slot 30. At this point, since all gate leaves except the target water intake layer are locked by the second connector 16 and cannot slide relative to each other, the entire gate becomes a single unit, with only a gap remaining between adjacent gate leaves of the target water intake layer. Water can then enter the intake through this gap, enabling the extraction of water from a specific layer.

[0065] It should be noted that the control system of the lifting device 40 can be integrated with the reservoir's water level monitoring system to achieve automated operation. When the reservoir water level changes, the control system automatically adjusts the number of gate sections to be deployed according to a preset program, ensuring that surface water is always drawn without manual intervention. For water intake from a specific layer, the water intake depth can be preset according to downstream water demand, and the system automatically calculates the gate leaf section that needs to be installed with the second connector 16 and prompts the operator to perform the corresponding operation.

[0066] In this embodiment, the stratified water intake operation method provided by this embodiment, through the application of the aforementioned stratified water intake gate, has technical effects closely related to the technical effects of the aforementioned stratified water intake gate. Specifically, when surface water needs to be taken, the lifting device 40 is operated according to the water level change, so that the compressed gate leaf is below the water level and the stretched gate leaf is above the water level, allowing surface water to pass smoothly through the top of the compressed gate leaf without the need to equip each gate leaf with an independent grab beam or opening and closing device, simplifying the operation process; when a specific layer of water needs to be taken, a second connecting member 16 is installed between adjacent gate leaves other than the target water intake layer, leaving a gap between adjacent gate leaves of the target water intake layer, and then the gate is lowered to the bottom sill, so that the water flow can accurately enter the target water layer through the reserved gap, realizing flexible access to the middle and lower layers of water. Through the coordinated operation of the above methods, operators can flexibly switch the working state of the gate simply by plugging and unplugging the second connector 16 and operating the lifting device 40. This eliminates the need for complex hydraulic automatic grab beams or multi-layer opening and closing equipment, thereby significantly simplifying the operation process, reducing equipment investment and maintenance costs, and improving the efficiency of stratified water intake.

[0067] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A tiered water intake gate, characterized in that, The stratified water intake gate is used for stratified water intake equipment. The stratified water intake equipment includes a frame (20), a gate slot (30), and a lifting device (40). The frame (20) is set on the dam surface (01). The lifting device (40) is set on the frame (20). The gate slot (30) is set on the left and right sides of the dam opening. The stratified water intake gate includes a first connector (15), a second connector (16), and multiple gate leaves stacked in a vertical direction. The gate leaf at the top is used to connect with the lifting device (40). The left and right ends of the gate leaf are respectively used to slide and connect in the gate slot (30). Adjacent gate leaves are slidably connected through the first connector (15). The second connector (16) is used to detachably connect between adjacent gate leaves to restrict the relative movement between adjacent gate leaves.

2. The tiered water intake gate according to claim 1, characterized in that, In each pair of adjacent door leaves, an inner hanging plate (17) is provided at the bottom of the upper door leaf and an outer hanging plate (18) is provided at the top of the lower door leaf. The inner hanging plate (17) is provided with a first connecting hole (171) and a second connecting hole (172) at intervals along the vertical direction. The first connecting hole (171) is located above the second connecting hole (172). The outer hanging plate (18) is provided with an elongated hole (181). The length direction of the elongated hole (181) is consistent with the vertical direction. The first connecting member (15) is connected to the second connecting hole (172) and the elongated hole (181), and the first connecting member (15) is used to slide along the length direction of the elongated hole (181). The second connecting member (16) is used to be detachably connected between the first connecting hole (171) and the elongated hole (181).

3. The tiered water intake gate according to claim 2, characterized in that, The first connector (15) and the second connector (16) are pin structures adapted to the second connecting hole (172), the first connecting hole (171), and the elongated hole (181), respectively, and the distance between the first connecting hole (171) and the second connecting hole (172) is equal to the length of the elongated hole (181).

4. The tiered water intake gate according to claim 2, characterized in that, The door leaf is a frame structure, and the side of the frame structure facing the upstream of the water area is set as a panel to block the water flow. The inner hanging plate (17) is set inside the frame structure, and the outer hanging plate (18) is set outside the frame structure.

5. The tiered water intake gate according to claim 2, characterized in that, The inner hanging plate (17) and / or the outer hanging plate (18) located on a section of the door leaf are provided in at least two sets, and each set of the inner hanging plate (17) and / or the outer hanging plate (18) includes at least two, and the installation positions of the inner hanging plate (17) and the outer hanging plate (18) of two adjacent sections of the door leaf correspond to each other.

6. The tiered water intake gate according to claim 5, characterized in that, The door leaf includes a top door leaf (11), multiple middle door leaves and a bottom door leaf (14) connected in sequence along the vertical direction. The top door leaf (11) is provided with a lifting plate (111), which is used to connect with the lifting device (40). The installation positions of the inner lifting plate (17) and the outer lifting plate (18) on a middle door leaf are set differently in the left and right directions.

7. The tiered water intake gate according to claim 6, characterized in that, The intermediate door leaf includes an even-numbered intermediate door leaf (12) and an odd-numbered intermediate door leaf (13) that are connected in a vertically staggered manner. The two sets of inner hanging plates (17) on the even-numbered intermediate door leaf (12) are located between the two sets of outer hanging plates (18) of the even-numbered intermediate door leaf (12). The two sets of outer hanging plates (18) on the odd-numbered intermediate door leaf (13) are located between the two sets of inner hanging plates (17) of the odd-numbered intermediate door leaf (13).

8. The tiered water intake gate according to claim 1, characterized in that, The left and right ends of the gate leaf are respectively provided with overlapping seats (19), and the layered water intake device also includes a support seat (60) set on the dam surface (01). The overlapping seat (19) is used to overlap the support seat (60).

9. A method for stratified water intake operation, applied to a stratified water intake gate as described in any one of claims 1-8, characterized in that, Includes the following steps: When it is necessary to take surface water, according to the water level change, the lifting device (40) set on the frame (20) of the stratified water intake equipment is operated to drive the stratified water intake gate to rise and fall, so that the gate leaf in the compressed state is below the water level and the gate leaf in the stretched state is above the water level, and the surface water passes through the top of the gate leaf in the compressed state. When it is necessary to take water from a specific layer, a second connector (16) is installed between the adjacent gate leaves other than the gate leaf adjacent to the target water intake layer, so that the adjacent gate leaves are relatively fixed, leaving a gap between the adjacent gate leaves of the target water intake layer, and the layered water intake gate is lowered to the bottom sill of the gate slot (30), and the water flows in from the gap.

10. The stratified water intake operation method according to claim 9, characterized in that, The stratified water intake device also includes a support base (60) set on the dam surface (01). The step of taking water from a specific layer also includes: first, raising the stratified water intake gate above the dam surface (01), using the support base (60) to support the left and right ends of the gate leaf, and then performing the installation operation of the second connector (16).

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