Water conservancy layered water taking device

Abstract

The invention discloses a water conservancy layered water taking device which comprises a door frame assembly, a lifting lug is arranged at the top end of the door frame assembly, and a plurality of water taking openings which are sequentially formed in the height direction at intervals are formed in the door frame assembly. The door frame assembly comprises two oppositely-arranged side stand columns and cross beams connected between the two side stand columns, each side stand column comprises a plurality of sub-stand columns, every two adjacent sub-stand columns are connected through a fastener, and every two adjacent cross beams and every two opposite sub-stand columns jointly define the water intake. A movable gate is arranged in each water intake and can close or open the water intake, and the surface profile of each gate is that two flow guide curved surfaces are symmetrically arranged and connected end to end. According to the water conservancy layered water taking device, every two adjacent sub-stand columns are connected through the corresponding fastener, and therefore the number of water taking layers can be flexibly increased or decreased according to engineering requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of stratified water intake, and in particular to a water conservancy stratified water intake device. Background Art

[0002] In stratified water intake applications in water conservancy projects, accurately obtaining water from different water layers is crucial. However, existing stratified water intake devices have significant drawbacks. First, they are inconvenient to install. Second, most existing devices use a fixed water intake structure, which cannot flexibly adjust the water intake height according to water level fluctuations or project scale. As a result, they cannot meet the stratified water intake needs in different scenarios and have poor versatility. When the device is partially damaged (such as aging of the water intake components on a certain layer), the door frame assembly must be completely disassembled for repair, which is time-consuming and labor-intensive, affects normal water intake operations, and significantly increases maintenance costs. Summary of the Invention

[0003] The main purpose of the present invention is to provide a water conservancy stratified water intake device to solve the problem in the prior art that the water intake height cannot be flexibly adjusted according to water level changes or project scale.

[0004] To achieve the above object, the present invention provides the following technical solutions: According to the hydraulic stratified water intake device of the present application, it includes a door frame assembly, a lifting lug is provided at the top of the door frame assembly, and a plurality of water intakes arranged in sequence along the height direction are provided on the door frame assembly. The door frame assembly includes two oppositely arranged side columns and a crossbeam connected between the two side columns. The side columns include a plurality of sub-columns, and two adjacent sub-columns are connected by fasteners. The two adjacent crossbeams and the two opposite sub-columns jointly define the water intake. A movable gate is provided in each of the water intakes, and the gate can close or open the water intake. The surface contour of the gate is symmetrically arranged on two guide surfaces and connected end to end.

[0005] According to the hydraulic stratified water intake device of the present application, the gate includes a first end and a second end opposite to each other along the length direction, and the cross section of the guide curved surface is further provided with a first tangent point, a second tangent point, and a third tangent point between the first end and the second end. The cross section is along the symmetry axis of the gate, and the contour between the first end and the first tangent point and the contour between the third tangent point and the second end satisfy the following formula: , there is a smooth transition between the first tangent point and the second tangent point, and a smooth transition between the second tangent point and the third tangent point, wherein X is the distance between the first end and the first tangent point or the distance between the third tangent point and the second end, Y is the distance between the outline between the first end and the first tangent point or the distance between the outline between the third tangent point and the second end and the gate symmetry axis, and t is the polar angle parameter.

[0006] Optionally, for the length L of the gate, the distance L1 between the third tangent point and the second end satisfies: L1 = 2 / 3L, 3m < L < 3.5m, where m is in meters.

[0007] Optionally, the inside of the gate includes a hollow cavity, and inside the hollow cavity, a first reinforcing plate, a second reinforcing plate, and a third reinforcing plate are arranged at intervals in the length direction of the gate. The thicknesses of the first reinforcing plate and the second reinforcing plate are equal and both are D1, and the thickness of the second reinforcing plate is D2, where D2 > 2D1. The first reinforcing plate, the second reinforcing plate, and the third reinforcing plate extend to both ends in the width direction of the gate, and the gate, the first reinforcing plate, the second reinforcing plate, and the third reinforcing plate are integrally formed.

[0008] Optionally, an equipment installation cavity is provided on the outer side of the side column. An inspection opening is further provided on the side of the equipment installation cavity facing away from the side column. The side column also defines an assembly channel, and the assembly channel communicates the water intake and the equipment installation cavity. A driving component is arranged in the equipment installation cavity. Both ends of the gate are provided with a central shaft, and the central shaft passes through the assembly channel. A rolling bearing is sleeved on the central shaft. The central shaft includes a free end and a fixed end, and the fixed end is integrally formed with the gate. The central shaft is arranged as a stepped cantilever shaft, and the driving component corresponds to and is in transmission connection with the central shaft on one side.

[0009] Optionally, the water conservancy layered water intake device further includes a control system and a water temperature and water quality monitor, and the driving component, the water temperature and water quality monitor, and the control system are all communicatively connected. A detection end of the water temperature and water quality monitor is provided on the gate, and the detection end and the water temperature and water quality monitor are electrically connected through a wire. A wire routing channel is provided in the central shaft and runs through the free end and the hollow cavity, and the wire passes through the hollow cavity, the wire routing channel, and the equipment installation cavity.

[0010] Optionally, the driving component includes a motor, a reducer, a worm, and a worm wheel that are sequentially in transmission connection. The worm wheel is sleeved on the central shaft. A keyway is provided in the worm wheel, and a connection key is provided on the central shaft, and the connection key is embedded in the keyway. An opening degree detector is further provided at the free end, and the opening degree detector is communicatively connected with the control system.

[0011] For the water conservancy layered water intake device according to the present application, connecting plates are provided at both ends in the length direction of the sub-column. Multiple bolt holes are provided on the connecting plates. The connecting plates of two adjacent sub-columns are overlapped, and fastening members are commonly inserted into the opposite bolt holes on the two connecting plates. A rectangular block-shaped elastic buffer is provided between the two overlapped connecting plates.

[0012] According to the hydraulic stratified water intake device of the present application, the gate is rotatable, and a sealing member is further provided on the surface of the beam facing the water intake. When the gate is rotated to close the water intake, both ends of the gate in the longitudinal direction respectively abut against the sealing member.

[0013] According to the hydraulic stratified water intake device of the present application, the surfaces of the crossbeam and the sub-columns defining the water intake are both provided with arc-shaped surfaces.

[0014] The above technical solution provided by the embodiment of the invention has the following advantages compared with the prior art: The hydraulic stratified water intake device provided by the embodiment of the present invention has a lifting lug that can cooperate with lifting equipment to realize the overall lifting of the hydraulic stratified water intake device, which is convenient for rapid relocation, and the side columns include sub-columns arranged in sequence along the length direction, and two adjacent sub-columns are connected by fasteners, so that the number of water intake layers can be flexibly increased or decreased according to engineering needs. By changing the number of sub-columns, the overall height can be adjusted to adapt to changes in reservoir water levels or expansion needs. At the same time, it allows damaged sub-columns or beams to be replaced without disassembling adjacent components. In addition, the multi-layer independent water intake layout realizes vertical stratification control of the water body, and each layer of water intake can be opened and closed separately to obtain specific water layer samples. The guide surface contour can guide the water flow in the tangential direction when the gate is opened, thereby reducing head loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a hydraulic stratified water intake device provided in one embodiment of the present invention; Figure 2 A front view of a hydraulic stratified water intake device provided in another embodiment of the present invention; Figure 3 for Figure 2 Cross-sectional view at AA in the middle; Figure 4 A side view of a hydraulic stratified water intake device provided by an embodiment of the present invention; Figure 5 for Figure 4 Cross-sectional view at the middle BB; Figure 6 for Figure 4 Enlarged view of point C in the middle; Figure 7 A three-dimensional diagram of a gate of a hydraulic stratified water intake device provided by an embodiment of the present invention; Figure 8 A cross-sectional view along the length direction of a gate of a hydraulic stratified water intake device provided in an embodiment of the present invention.

[0016] Explanation of reference numerals: door frame assembly 10, lifting ear 11, water intake 12, side column 13, sub-column 131, equipment installation cavity 132, crossbeam 14, gate 20, guide surface 21, first reinforcing plate 22, second reinforcing plate 23, third reinforcing plate 24, central axis 25, connecting key 251, first end A, first tangent point B, second tangent point C, third tangent point D, second end E, rolling bearing 30, drive assembly 40, motor 41, motor output shaft 411, reducer 42, reducer output shaft 421, worm 43, worm gear 44, fixing bracket 50, bolt 51, axis of symmetry M. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0018] like Figure 1-Figure 3 、 Figure 7 as well as Figure 8 As shown, the hydraulic stratified water intake device according to the embodiment of the present application includes a door frame assembly 10, a lifting ear 11 is provided at the top of the door frame assembly 10, and a plurality of water intakes 12 are provided on the door frame assembly 10 and spaced apart in sequence along the height direction. The door frame assembly 10 includes two oppositely arranged side columns 13 and a crossbeam 14 connected between the two side columns 13. The side columns 13 include a plurality of sub-columns 131, and two adjacent sub-columns 131 are connected by fasteners. The two adjacent crossbeams 14 and the two opposite sub-columns 131 jointly define the water intake 12. A movable gate 20 is provided in each water intake 12, and the gate 20 can close or open the water intake 12. The surface contour of the gate 20 is that two guide surfaces 21 are symmetrically arranged and connected end to end.

[0019] The crossbeam 14 is welded or integrally formed with the sub-columns 131 on both sides.

[0020] In a specific embodiment, the door frame assembly 10 includes two vertical parallel side columns 13 and multiple horizontal beams 14 to form a rectangular frame. Adjacent beams 14 are arranged at equal intervals in the vertical direction. Adjacent side columns 13 and beams 14 together define a rectangular water intake 12.

[0021] Each side column 13 includes a plurality of sub-columns 131 stacked in sequence. Positioning pin holes aligned with each other are provided between adjacent sub-columns 131 , and cylindrical pins are installed in the positioning pin holes.

[0022] like Figure 7 and Figure 8 As shown, the guide surface 21 is a smooth continuous surface that can guide water to flow along a specific path. The symmetry axis M of the gate 20 extends along the length direction of the gate 20, and the guide surfaces 21 all protrude in the direction away from the symmetry axis M. The guide surfaces 21 are composed of a section of arc surface or multiple sections of arc surfaces with smooth transitions connected in sequence.

[0023] According to the hydraulic stratified water intake device of the embodiment of the present application, the lifting lug 11 can cooperate with the lifting equipment to realize the overall lifting of the hydraulic stratified water intake device, which is convenient for rapid relocation, and the side column 13 includes sub-columns 131 arranged in sequence along the length direction, and two adjacent sub-columns 131 are connected by fasteners, so that the number of water intake layers can be flexibly increased or decreased according to engineering requirements. By changing the number of sub-columns 131, the overall height can be adjusted to adapt to changes in reservoir water levels or expansion needs. At the same time, it is allowed to replace damaged sub-columns 131 or beams 14 without disassembling adjacent components. In addition, the layout of the multi-layer independent water intakes 12 realizes the vertical stratification control of the water body. Each layer of water intake 12 can be opened and closed separately to obtain a specific water layer sample. The contour of the guide surface 21 can guide the water flow to the tangential direction when the gate 20 is opened, thereby reducing the head loss.

[0024] like Figure 8 As shown, according to the hydraulic stratified water intake device of the embodiment of the present application, the gate 20 includes a first end A and a second end E opposite to each other along the length direction. The cross section of the guide curved surface 21 is further provided with a first tangent point B, a second tangent point C, and a third tangent point D between the first end A and the second end E. The cross section is along the symmetry axis M of the gate 20. The contour between the first end A and the first tangent point B and the contour between the third tangent point D and the second end E satisfy the following formula: , there is a smooth transition between the first tangent point B and the second tangent point C, and a smooth transition between the second tangent point C and the third tangent point D, wherein X is the distance between the first end A and the first tangent point B or the distance between the third tangent point D and the second end E, Y is the distance between the contour between the first end A and the first tangent point B or the contour between the third tangent point D and the second end E and the symmetry axis M of the gate 20, and t is the polar angle parameter.

[0025] In the above embodiment, the coordinates (x, y) corresponding to each point on the contour between the first end A and the first tangent point B and the contour between the third tangent point D and the second end E satisfy , its polar coordinate equation is as follows: Therefore, the curve parameter equations corresponding to the contour between one end and the first tangent point B and the contour between the third tangent point D and the second end E can be simplified to , the thickness H of the gate 20 satisfies H=2y, such as Figure 8As shown in the figure. The width of the gate 20 is approximately the same as the width of the water intake 12. It can be understood that there needs to be a certain gap between the two to prepare for the rotation of the gate 20.

[0026] For the water conservancy layered water intake device according to the embodiment of the present application, the formula constructs the x and y coordinate relationships through the polar angle parameter t, so that the contours between the first end A and the first tangent point B, and between the third tangent point D and the second end E can better guide the flow. The guiding angle can be accurately controlled through the dynamic change of t, reducing the water flow impact resistance and achieving low-energy consumption water intake. The contour curve derived from the formula makes the force distribution on the gate 20 more uniform, avoiding local stress concentration. The polar angle parameter t, as a variable, allows the curve shape to be adjusted according to actual engineering requirements (such as water level height, water flow velocity). By changing the value range of t, the guiding surface 21 of the gate 20 can flexibly adapt to different water conservancy scenarios, realizing the dynamic optimization of the guiding and sealing performance, and enhancing the versatility of the water conservancy layered water intake device.

[0027] As Figure 8 shown, in some embodiments, for the length L of the gate 20, the distance L1 between the third tangent point D and the second end E satisfies: L1 = 2 / 3L, 3m < L < 3.5m, where m is in meters.

[0028] In the above embodiment, by setting the ratio of the distance between the third tangent point D and the second end E to the length of the gate 20, the center of gravity can be balanced, making the gate 20 rotate more smoothly around the rotation axis during the rotation and closing process. The center of gravity falls near the rotation axis, reducing the rotation resistance caused by the gravity offset, avoiding the opening and closing jamming, ensuring that the gate 20 can complete the rotation opening and closing动作 quickly and smoothly, and enhancing the water intake operation efficiency.

[0029] In some embodiments, a plurality of guiding plates are arranged on the guiding surface 21 of the gate 20, and the plurality of guiding plates are arranged at intervals along the width direction of the gate 20. The guiding plates are arranged at intervals along the width direction on the surface of the gate 20. The large-area high-speed flowing water will generate a large impact force and friction force on the surface of the gate​​In some embodiments, the curved guide surface 21 of the gate 20 is coated with a composite coating of PDMS (polydimethylsiloxane) elastomer and nano-TiO2, which can suppress turbulent pulsation and reduce algae adhesion. One prior art technique for preparing this composite coating includes ultrasonically dispersing nano-TiO2 (particle size 10-20 nm) in ethanol for 30 minutes to form a stable suspension. The dispersion is then mixed with a PDMS prepolymer (such as Sylgard 184) in appropriate proportions and uniformly dispersed through high-speed shearing (10,000 rpm) or mechanical stirring (2 hours). A curing agent is then added and evenly applied to the curved guide surface 21, whereupon the coating is cured at a specific temperature.

[0031] like Figure 7 and Figure 8 As shown, in some embodiments, the interior of the gate 20 includes a hollow cavity, and the first reinforcing plate 22, the second reinforcing plate 23 and the third reinforcing plate 24 are arranged in the hollow cavity and spaced in sequence along the length direction of the gate 20. The thickness of the first reinforcing plate 22 and the second reinforcing plate 23 are equal and are both D1. The thickness of the second reinforcing plate 23 is D2, D2>2D1, the first reinforcing plate 22, the second reinforcing plate 23 and the third reinforcing plate 24 extend to both ends of the gate 20 in the width direction, and the gate 20, the first reinforcing plate 22, the second reinforcing plate 23 and the third reinforcing plate 24 are formed as one piece.

[0032] In the above-described embodiment, the hollow cavity design within the gate 20 significantly reduces its weight, lowering energy consumption during rotation and opening and closing, making the gate 20 more flexible. Furthermore, the first, second, and third reinforcing plates 22, 23, and 24 disposed within the hollow cavity form a support system that compensates for the strength loss of the hollow structure. The first and second reinforcing plates 22, 23 are of equal thickness, evenly distributing support force along the length of the gate 20, enhancing the gate's overall resistance to bending deformation and ensuring structural stability under water impact. The third reinforcing plate 24, with a thickness D2 greater than 2D1, provides enhanced support for key stress-bearing areas of the gate 20 (such as areas of concentrated water impact or near the pivot point). This differentiated thickness design prioritizes structural strength enhancement in high-stress areas, optimizing material efficiency while improving the gate's 20's adaptability to complex hydraulic conditions and preventing localized deformation or damage.

[0033] like Figure 1 、 Figure 4-Figure 6As shown, in some embodiments, an equipment installation cavity 132 is provided on the outer side of the side column 13, and an inspection port is also provided on the side of the equipment installation cavity 132 away from the side column 13. The side column 13 also defines an assembly channel, which connects the water intake 12 and the equipment installation cavity 132. A drive component 40 is provided in the equipment installation cavity 132, and a central axis 25 is provided at both ends of the gate 20. The central axis 25 is passed through the assembly channel, and a rolling bearing 30 is sleeved on the central axis 25. The central axis 25 includes a free end and a fixed end, and the fixed end is integrally formed with the gate 20. The central axis 25 is configured as a stepped cantilever axis, and the drive component 40 corresponds one-to-one to the central axis 25 on one side and is transmission-connected.

[0034] In the above-described embodiment, the equipment installation cavity 132 integrates the drive assembly 40 on the outside of the side column 13, forming an independent protective unit to prevent water erosion and interference from debris. A maintenance access is also provided on the side of the equipment installation cavity 132 facing away from the side column 13. This allows for direct repair from the outside of the gate 20 when a rotational malfunction occurs, without disassembling the gate 20 or the door frame, thus shortening downtime for maintenance. The central axis 25 is configured as a stepped cantilever axis, which enhances bending resistance through a gradual diameter change. The free end is rigidly connected to the drive assembly 40 to ensure complete transmission of the driving torque. The fixed end is integrally formed with the gate 20, eliminating gaps in the connection and improving rotational stability. Rolling bearings 30 are installed within the assembly channel and, in conjunction with a sealing structure, prevent the ingress of water impurities, reduce friction losses, and ensure long-term smooth rotation. Each drive assembly 40 independently controls a single central axis 25, ensuring smooth rotation of the gate 20. The transmission system reduces energy loss through structural optimization, ensuring fast and precise opening and closing movements and adapting to diverse operating conditions.

[0035] The driving component 40 may be powered by an electric motor 41 or a cylinder.

[0036] In some embodiments, the water conservancy stratified water intake device also includes a control system and a water temperature and water quality monitor. The drive component 40, the water temperature and water quality monitor and the control system are all communicatively connected. A detection end of the water temperature and water quality monitor is provided on the gate 20. The detection end and the water temperature and water quality monitor are electrically connected through a wire. A wiring channel is provided in the central axis 25 that passes through the free end and the hollow cavity. The wire is passed through the hollow cavity, the wiring channel and the equipment installation cavity 132.

[0037] The water temperature and quality monitor can be installed in the device installation cavity 132. The data cable connecting the water temperature and quality monitor and the detection terminal is installed in the hollow cavity and the wiring channel. The water temperature and quality monitor can be a HachSC1000 (a model of Hach Corporation (USA), which is a multi-parameter universal controller) or an ultrasonic Doppler device.

[0038] In the above-described embodiment, the detection end of the water temperature and water quality monitor is directly embedded in the gate 20 and integrated with the diversion surface 21, enabling real-time measurement of water parameters at the water intake 12. The embedded installation of the detection end of the water temperature and water quality monitor effectively avoids water flow disturbances and ensures the accuracy of the monitoring data. The control system receives monitoring data in real time, and the drive assembly 40 can automatically adjust the opening of the gate 20 according to the water quality parameters. For example, when the water quality in a certain layer is abnormal, the system quickly responds and adjusts the status of the corresponding gate 20. The wiring channel within the central axis 25 adopts a rotating seal structure, allowing the wires to rotate with the gate 20 without entanglement. The wiring channel is connected to the hollow cavity and the equipment installation cavity 132 via a sealing adapter, which effectively prevents water infiltration and ensures the reliability of signal transmission. The wiring channel is integrated with the central axis 25 structure, ensuring transmission strength while providing space for threading. A wire fixing device is provided in the hollow cavity to prevent water impact and wear of the wires.

[0039] like Figure 4-Figure 6 As shown, in some embodiments, the driving assembly 40 includes an electric motor 41, a reducer 42, a worm 43 and a worm gear 44 that are sequentially connected in transmission. The worm gear 44 is sleeved on the central shaft 25. A keyway is provided in the worm gear 44. A connecting key 251 is provided on the central shaft 25. The connecting key 251 is embedded in the keyway. An opening detector is also provided at the free end, and the opening detector is communicatively connected to the control system.

[0040] like Figure 6 As shown, the motor 41 , the motor output shaft 411 , the reducer 42 , the reducer output shaft 421 , the fixing bracket 50 , the bolts 51 for assembling the fixing bracket 50 , the worm 43 and the worm wheel 44 are shown.

[0041] In the above embodiment, the meshing design of the worm 43 and the worm wheel 44 can form a reverse self-locking function, which can automatically lock the position of the gate 20 when the power is interrupted, preventing accidental opening due to gravity or water pressure, and improving the safety of the operation of the device. The tight fit structure between the keyway in the worm wheel 44 and the connecting key 251 of the central shaft 25 realizes the reliable transmission of the driving torque, allowing the worm wheel 44 to be axially fine-tuned on the central shaft 25, compensating for assembly errors, and ensuring transmission stability. The motor 41, reducer 42, worm 43 and worm wheel 44 are connected by flanges to form an independent drive unit, which can be hoisted and replaced as a whole. The reducer 42 and the worm 43 are connected by a locking sleeve, which can transmit torque without a keyway, improving the efficiency of disassembly and assembly. The opening detector is integrated into the free end of the central shaft 25, and obtains the opening information of the gate 20 by detecting the rotation angle of the worm wheel 44, realizing dynamic monitoring of the opening and closing process and ensuring control accuracy. The worm 43 and worm wheel 44 transmission converts the horizontal rotation of the motor into the vertical rotation of the central shaft 25, adapting to the narrow body structure of the side column 13. The L-shaped drive layout saves installation space. The drive assembly 40 is completely enclosed within the equipment mounting cavity 132, isolating it from the water flow environment. The worm gear 44 and worm 43 are located near an access hatch at the bottom of the equipment mounting cavity 132, allowing for quick disassembly and maintenance. A keyway connection allows the worm gear 44 to be separated from the central shaft 25 without disassembling the gate 20.

[0042] In some embodiments, a brake is connected between the reducer output shaft 421 and the worm 43. The brake includes, but is not limited to, an electromagnetic brake and a hydraulic brake. The brake is also equipped with a pressure strain gauge. The pressure strain gauge directly measures the pressure changes experienced by the brake during the opening and closing process, reflecting the mechanical load state of the gate 20 during operation. The pressure data is used to infer the water flow impact force, and combined with water quality sensor data, the opening distribution strategy for stratified water intake is optimized. When inferring the water flow impact force from the pressure data, the force transmission process is as follows: water flow impact force → gate 20 → central shaft 25 → worm gear 44 → worm 43 → brake → pressure strain gauge. Calibration is performed by fixing the gate 20 opening and applying a known load to simulate the water flow impact force. Rapid opening and closing of the gate 20 is simulated, and the pressure fluctuation curve is recorded. After establishing a corresponding mechanical relationship, the measured water flow impact force is compared with the inferred value in a laboratory environment. If the error is controlled within ±5%, it can be applied in engineering projects. In this way, when the water quality of a certain layer meets the standard, the corresponding gate 20 can be opened first. When the impact force of the water flow in this layer exceeds the limit, the corresponding gate 20 is opened to share the load.

[0043] It is understandable that the position of the gate 20 can also be fed back in real time through the opening detector to adjust the braking force to avoid overshoot or underlock.

[0044] like Figure 7As shown, in some embodiments, the gate 20 includes a central axis 25 arranged at both ends in the width direction, and each gate 20 corresponds to two sets of drive components 40, and the two sets of drive components 40 are respectively arranged on the outside of the two side columns 13, and a clutch is provided between the motor 41 and the reducer 42. The clutch can control the transmission or disengagement of power between the motor 41 and the reducer 42. In this way, when the gate 20 needs to be driven, only the drive component 40 on one side needs to maintain transmission with the gate 20, and the drive component 40 on the other side is used as a backup. When the drive component 40 on this side fails, it is disengaged from the drive component 40 on this side, and the drive component 40 on the other side is transmitted to the gate 20 through the clutch, thereby realizing the backup of the drive component 40. Even if a drive component 40 fails, the other backup drive component 40 can also be quickly switched to work, thereby shortening the downtime of the water conservancy stratified water intake device when a failure occurs, and ensuring the continuity of the water intake function.

[0045] It should be noted that the side of the side column 13 close to the water intake 12 is the inner side, and the side away from the water intake 12 is the outer side.

[0046] According to the hydraulic stratified water intake device of the embodiment of the present application, connecting plates are provided at both ends of the length direction of the sub-columns 131, and a plurality of bolt 51 holes are provided on the connecting plates. The connecting plates of two adjacent sub-columns 131 are overlapped, and fasteners are commonly passed through the opposite bolt 51 holes on the two connecting plates. A rectangular block-shaped elastic buffer is provided between the two overlapped connecting plates.

[0047] In the above-mentioned embodiment, the elastic buffer is sandwiched between the connecting plates, and absorbs the impact energy of the water flow through the elastic deformation of the material, reduces vibration transmission, reduces structural stress concentration, and avoids fatigue damage caused by rigid connection. The elastic buffer produces compression deformation under the preload of the bolt 51, automatically adapts to the processing and installation deviations of the sub-columns 131, ensures that the connection planes of adjacent sub-columns 131 are tightly fitted, and maintains the straightness of the overall structure. The elastic buffer can also effectively prevent water from infiltrating the connection interface, prevent rust, and extend the service life of the structure. The flexibility of the elastic buffer allows the sub-column 131 to be fine-tuned in angle to adapt to complex foundation conditions, and the connection can be quickly completed without on-site welding, thereby improving construction efficiency. A single sub-column 131 can be disassembled and replaced independently, and the compression characteristics of the elastic buffer eliminate the need to completely release the preload during maintenance, shortening downtime and reducing maintenance difficulty.

[0048] According to the hydraulic stratified water intake device of the embodiment of the present application, the gate 20 is rotatable, and a sealing member is provided on the surface of the beam 14 on the side facing the water intake 12. When the gate 20 is rotated to close the water intake 12, the two ends of the gate 20 in the longitudinal direction respectively abut against the sealing member.

[0049] In the above-described embodiment, the seal elastically deforms when the gate 20 rotates to the closed position, compensating for machining errors and installation deviations between the gate 20 and the crossbeam 14. This flexible contact eliminates rigid impact, ensuring a linear seal between the gate 20 and the seal. This evenly distributes contact pressure, effectively preventing water flow, and thus improving sealing reliability. The seal quickly assembles to the crossbeam 14 via a snap-on design. The seal can be made of an elastic material such as EPDM rubber.

[0050] Among them, the contact surface between the seal and the gate 20 is set to an arc surface, which can enable the gate 20 to produce a wiping effect during the opening and closing process with the seal, automatically remove mud and sand impurities, reduce maintenance frequency, and reduce maintenance costs.

[0051] In a specific embodiment, the end faces of both ends of the gate 20 in the longitudinal direction are set as arc surfaces, so that the gate 20 can produce a wiping effect during the opening and closing process with the seal, automatically remove mud and sand impurities, reduce maintenance frequency, and reduce maintenance costs.

[0052] According to the hydraulic stratified water intake device of the embodiment of the present application, the surfaces of the beam 14 and the sub-columns 131 defining the water intake 12 are both provided with curved surfaces. It is understood that, compared to a right-angle structure, the curved surfaces can reduce turbulence and head loss generated by the water flow, thereby improving water intake efficiency. The curved surface design also makes the water flow turn more naturally and reduces the probability of local vortex formation.

[0053] A polyurethane-based self-healing coating is applied to the curved surface and the sealing surface. When microcracks appear, the encapsulated repair agent is released under humidity triggering, thereby achieving partial automatic repair within a certain period of time.

[0054] In order to verify the effect of a hydraulic stratified water intake device provided in this embodiment, a two-dimensional structural model of the hydraulic stratified water intake device provided in this embodiment was established in Fluent software. For the convenience of comparison, a stratified water intake gate with a rectangular gate structure and a hydraulic stratified water intake device model designed in this application were established respectively, and numerical simulations were performed on them based on the same working environment and water intake requirements.

[0055]

[0056] Under the conditions of normal water storage level of 2267.00m in the power station and power generation of six units, when the lowest water level controlled by the upper water intake is 2257.00m (11-layer gate), the total head loss of the inlet section of the rectangular water intake working gate is 0.22m, and the total head loss of the hydraulic stratified water intake device of the present application at the inlet section is 0.13m, and its electric energy loss reduction rate is 41%; in addition, when the lowest water level controlled by the upper water intake is 2260.50m (10-layer gate), the total head loss of the inlet section of the rectangular water intake working gate is 0.16m, and the total head loss of the hydraulic stratified water intake device of the present application at the inlet section is 0.11m, and its electric energy loss reduction rate is 31%.

[0057] The test results show that when the water intake level of the power station is not lower than 2257.00m, the power loss of the water drop-shaped hydraulic stratified water intake device of the present invention will be at least 41% lower than the power loss of the rectangular hydraulic stratified water intake device.

[0058] The above detailed description of the specific embodiments of the invention is intended to be illustrative only, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the present invention are also within the scope of the present invention. Therefore, equivalent changes, modifications, and improvements made without departing from the spirit and scope of the present invention should be included within the scope of the present invention.

Claims

1. A water conservancy stratified water intake device, characterized in that: It includes a door frame assembly. A lifting lug is provided at the top of the door frame assembly. The door frame assembly is provided with a plurality of water intake ports arranged at intervals in the height direction. The door frame assembly includes two oppositely arranged side columns and a cross beam connected between the two side columns. The side column includes a plurality of sub-columns, and adjacent two sub-columns are connected by fasteners. Adjacent two cross beams and opposite two sub-columns jointly define the water intake port. A movable gate is provided in each water intake port. The gate can close or open the water intake port. The surface profile of the gate is symmetrically arranged with two diversion curved surfaces and connected end to end.

2. The hydraulic stratification water intake device according to claim 1, characterized in that: The gate includes a first end and a second end opposite to each other along the length direction. The cross section of the guide curved surface is further provided with a first tangent point, a second tangent point, and a third tangent point between the first end and the second end. The cross section is along the gate symmetry axis. The contour between the first end and the first tangent point and the contour between the third tangent point and the second end satisfy the following formula: , there is a smooth transition between the first tangent point and the second tangent point, and a smooth transition between the second tangent point and the third tangent point, wherein X is the distance between the first end and the first tangent point or the distance between the third tangent point and the second end, Y is the distance between the outline between the first end and the first tangent point or the distance between the outline between the third tangent point and the second end and the gate symmetry axis, and t is the polar angle parameter.

3. The hydraulic stratification water intake device according to claim 2, characterized in that: For the length L of the gate, the distance L1 between the third tangent point and the second end satisfies: L1 = 2 / 3L, 3m < L < 3.5m, where m is in meters.

4. The hydraulic stratification water intake device according to claim 3, characterized in that: The inside of the gate includes a hollow cavity. The hollow cavity is provided with a first reinforcing plate, a second reinforcing plate, and a third reinforcing plate arranged at intervals in the length direction of the gate. The thicknesses of the first reinforcing plate and the second reinforcing plate are equal and both are D1, and the thickness of the second reinforcing plate is D2, D2 > 2D1. The first reinforcing plate, the second reinforcing plate, and the third reinforcing plate extend to both ends in the width direction of the gate. The gate, the first reinforcing plate, the second reinforcing plate, and the third reinforcing plate are integrally formed.

5. The hydraulic stratification water intake device according to claim 4, characterized in that: An equipment installation cavity is provided on the outer side of the side column. An inspection port is further provided on the side of the equipment installation cavity背离 the side column. The side column also defines an assembly channel. The assembly channel communicates the water intake port and the equipment installation cavity. A driving component is provided in the equipment installation cavity. Both ends of the gate are provided with a central shaft. The central shaft passes through the assembly channel. A rolling bearing is sleeved on the central shaft. The central shaft includes a free end and a fixed end. The fixed end is integrally formed with the gate. The central shaft is arranged as a stepped cantilever shaft. The driving component corresponds to and is传动连接 with the central shaft on one side一一对应并传动连接.

6. The hydraulic stratification water intake device according to claim 5, characterized in that: It further includes a control system and a water temperature and quality monitor. The driving component, the water temperature and quality monitor, and the control system are all通信连接. The detection end of the water temperature and quality monitor is provided on the gate. The detection end and the water temperature and quality monitor are electrically connected by a wire. A wiring channel passing through the free end and the hollow cavity is provided in the central shaft. The wire passes through the hollow cavity, the wiring channel, and the equipment installation cavity.

7. The hydraulic stratification water intake device according to claim 6, characterized in that: The driving component includes a motor, a reducer, a worm, and a worm wheel that are传动连接依次传动连接. The worm wheel is sleeved on the central shaft. A keyway is provided in the worm wheel. A connecting key is provided on the central shaft. The connecting key is embedded in the keyway. An opening detector is further provided at the free end. The opening detector is通信连接 with the control system.

8. The hydraulic stratification water intake device according to claim 1, characterized in that: Connecting plates are provided at both ends of the sub-columns in the length direction, and a plurality of bolt holes are provided on the connecting plates. The connecting plates of two adjacent sub-columns are overlapped, and the fasteners are passed through the opposite bolt holes on the two connecting plates. A rectangular block-shaped elastic buffer is provided between the two overlapped connecting plates.

9. The hydraulic stratification water intake device according to claim 1, characterized in that: The gate is rotatable, and a sealing member is provided on a surface of the beam facing the water intake. When the gate is rotated to close the water intake, both ends of the gate in the longitudinal direction respectively abut against the sealing member.

10. The hydraulic stratification water intake device according to claim 1, characterized in that: The surfaces of the crossbeam and the sub-columns defining the water intake are both provided with arc-shaped surfaces.

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