A system and method for water replenishment and replacement through multi-gate control

Abstract

This invention discloses a system and method for water replenishment and exchange through multi-gate coordinated control, comprising: a river channel; and a first control gate assembly and a second control gate assembly respectively disposed in the upstream and downstream sections of the river channel, and further comprising multiple channels disposed in the river channel and positioned between the first and second control gate assemblies. This invention utilizes natural tidal energy to replenish and exchange water in the inland river channel through multiple gates, while simultaneously and rationally coordinating the opening and closing of the upstream and downstream first and second control gate assemblies, thereby ensuring a long-term unidirectional flow state in the inland river channel, increasing water circulation, and ultimately improving the water quality of the inland river channel.

Description

Technical Field

[0001] This invention relates to the field of water environment engineering technology, specifically to a system and method for water replenishment and replacement through multi-gate joint control. Background Technology

[0002] Existing engineering measures for ensuring the water quality of inland rivers mainly include pollution interception, dredging, and water replenishment. These three measures are all crucial for ensuring the water quality of inland rivers. However, for some inland rivers with poor hydrodynamics and bidirectional flow, only water replenishment and regulation can be used to increase water circulation. The main method of water replenishment and regulation is to build pressure pipelines along major rivers to replenish water to inland rivers through pumping, thereby increasing water exchange. Although this method has a relatively immediate effect, it has two drawbacks: firstly, the initial construction investment is large; secondly, the subsequent operation and maintenance costs are extremely high, with significant annual electricity costs. Therefore, this paper proposes a water quality improvement system and method that utilizes natural resources effectively, with low consumption, intelligently, and greenly. Specifically, it is a system and method for water replenishment and exchange through multi-gate joint control. Summary of the Invention

[0003] The purpose of this invention is to provide a system and method for water replenishment and exchange through multi-gate joint control. This system utilizes natural tidal energy to replenish and exchange water in the inland river through multiple gates. At the same time, it rationally adjusts the opening and closing of the first and second control gate components at the upstream and downstream, thereby ensuring the unidirectional flow of water in the inland river in the long term, increasing water circulation, and thus improving the water quality of the inland river.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a system for water replenishment and exchange through multi-gate joint control, comprising: a river channel; and a first control gate assembly and a second control gate assembly respectively disposed in the upstream and downstream sections of the river channel, and further comprising multiple channels disposed in the river channel and positioned between the first control gate assembly and the second control gate assembly, wherein when the tide is high, the upstream first control gate assembly is opened and the downstream second control gate is closed, and when the tide is low, the upstream first control gate assembly is closed and the downstream second control gate is opened.

[0005] Preferably, the first control gate assembly includes an installation plate fixed to the opposite side of the river channel, the installation plate having a circular through groove in the middle; a connecting strip fixed to the side wall of the installation plate, with a central shaft fixed to the bottom of the connecting strip; two rotatable sector plates disposed inside the circular through groove, the two sector plates being rotatably connected to the central shaft through mounting rings at their central ends, forming a semicircle when the two sector plates are combined; two sets of meshing transmission assemblies are also provided on the installation plate, respectively used to drive the operation of the corresponding sector plates; a triggering system is also provided on the two sets of meshing transmission assemblies, used to control the opening and closing of the first control gate assembly and the second control gate assembly when tides occur.

[0006] Preferably, each set of the meshing transmission components includes a mounting strip disposed on the mounting plate, and the mounting strip can move up and down inside the long groove on the mounting plate, and a first rack fixed to the bottom of the mounting strip; it also includes an arc plate fixed to the arc edge of the fan-shaped plate, the outer wall of the arc plate is provided with arc teeth, and the arc teeth mesh with the first rack.

[0007] Preferably, the triggering system includes L-shaped frames fixed to the top of the two mounting bars respectively, with a float at the bottom of the vertical section of each L-shaped frame for sensing water level changes; and a spring connected to the lower surface of the horizontal section of the L-shaped frame and the upper surface of the mounting plate for resetting the L-shaped frame; it also includes a connecting plate fixed to the top of the horizontal sections of the two L-shaped frames, and a mounting frame disposed on one side of the river channel, with a resistance bar and an electric block sliding sleeve respectively disposed at the opposite ends of the mounting frame and the connecting plate, and the electric block sliding sleeve can slide on the resistance bar. When the tide rises or falls, the connecting plate contacts or separates from the mounting frame, which is used to control the closing and opening of the second control gate assembly; it also includes a terminal block disposed on the mounting frame for connecting an external power supply.

[0008] Preferably, the mounting bracket is also equipped with an indicator light to display changes in the upstream water level.

[0009] Preferably, the waterway is further provided with an indicator plate relative to the mounting frame, and the indicator plate is provided with a scale on the side wall near the connecting plate.

[0010] Preferably, the second control gate assembly includes a mounting frame fixed to the opposite side of the river channel, and a linkage mechanism disposed on the mounting frame, and also includes a baffle disposed on the linkage mechanism, wherein the linkage mechanism is used to control the closing or separation of the baffle from the mounting frame; the linkage mechanism includes two sets of linkage transmission assemblies disposed on the mounting frame, and the baffle is disposed between the two sets of linkage transmission assemblies.

[0011] Preferably, each of the linkage transmission assemblies includes a transmission frame fixed to the side wall of the baffle away from the first control gate assembly, and a first transmission rod and a second transmission rod respectively rotatably connected to the inner and outer sides of the bottom of the transmission frame. The other ends of the first transmission rod and the second transmission rod are respectively rotatably connected to a first pin and a second pin in the middle of the vertical section of the mounting frame, and the first pin is located inside and below the second pin. It also includes an L-shaped rod rotatably connected to the middle of the transmission frame via a mounting shaft.

[0012] It also includes a drive system mounted on the mounting frame for the operation and rotation of the L-shaped rod.

[0013] Preferably, each drive system includes a rotatable connecting shaft disposed on the inner wall of the vertical section of the mounting frame, the end of the L-shaped rod away from the transmission frame being fixedly connected to the connecting shaft, and a transmission gear fixed on the connecting shaft; it also includes an electric telescopic rod disposed at the end of the horizontal section of the mounting frame, the telescopic end of the electric telescopic rod being fixedly connected to a second rack through a connecting block, and the second rack meshing with the transmission gear.

[0014] A method for water replenishment and replacement through multi-gate control, applied to the aforementioned system for water replenishment and replacement through multi-gate control, the method comprising the following steps:

[0015] S1: During high tide, the first control gate component upstream is opened and the second control gate component is closed, so that a large amount of water flows into the river channel between the first control gate component and the second control gate component through the tidal action, that is, several channels enter the inland river.

[0016] S2: The first control gate assembly at the upstream position remains open until the tide recedes;

[0017] S3: When the tide recedes, the first control gate component upstream closes, while the second control gate component downstream of the river opens. A large amount of water flows out through the location of the second control gate component downstream, thus completing the process of exchanging most of the water in the inner river.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This invention utilizes tidal energy changes to achieve the replacement of most of the water in inland rivers, thereby changing the bidirectional flow of the river from a clear upstream-downstream reciprocating flow to a unidirectional flow. This design leverages the power of nature's tides to improve water quality and solves the problem of water circulation in inland river systems. It is an effective, low-consumption, intelligent, and green method for improving water quality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 for Figure 1 A partial disassembly diagram;

[0022] Figure 3 This is a schematic diagram of the structure of the first control gate assembly;

[0023] Figure 4 for Figure 3 Another perspective of the three-dimensional structure diagram;

[0024] Figure 5 This is a schematic diagram of the second control gate assembly.

[0025] Figure 6 for Figure 5 Another perspective on the three-dimensional structure;

[0026] Figure 7 This is a schematic diagram of the disassembly and reassembly of the linkage mechanism.

[0027] In the diagram: 1. River channel; 2. Canal; 3. Indicator light; 4. Connecting plate; 5. Terminal; 6. Mounting bracket; 7. Resistance strip; 8. Indicator plate; 9. L-shaped frame; 10. Float; 11. Spring; 12. Mounting strip; 13. First rack; 14. Arc-shaped tooth; 15. Central shaft; 16. Sector plate; 17. Connecting strip; 18. Mounting plate; 19. Mounting frame; 20. Baffle; 22. Electric telescopic rod; 23. Connecting block; 24. Second rack; 25. Second transmission rod; 26. First transmission rod; 27. First pin; 28. Second pin; 29. ​​Transmission tooth; 30. L-shaped rod; 31. Transmission frame; 32. Scale; 33. Circular through groove; 34. Arc-shaped plate. Detailed Implementation

[0028] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Please see Figures 1 to 7 The present invention preferably provides a technical solution: a system for water replenishment and exchange through multi-gate joint control, comprising: a river channel 1; and a first control gate assembly and a second control gate assembly respectively disposed in the upstream and downstream sections of the river channel 1, and further comprising multiple channels 2 disposed in the river channel 1 and positioned between the first control gate assembly and the second control gate assembly. When the tide is high, the upstream first control gate assembly is opened and the downstream second control gate is closed. When the tide is low, the upstream first control gate assembly is closed and the downstream second control gate is opened.

[0031] Based on the tidal conditions of the major rivers surrounding the inland canal, the position where the tide rises first is defined as upstream, and the position where the tide rises later is defined as downstream. This is achieved by installing a first control gate assembly and a second control gate assembly at the upstream and downstream ends of channel 1, respectively. Figure 1 As shown, this process can replace most of the water in the inner canal.

[0032] Specific examples Figure 2As shown, during high tide, the upstream first control gate component opens and the second control gate component closes, allowing a large amount of water to flow into the river channel 1 between the first and second control gate components through tidal action. The water then enters the inland river through several channels 2. The upstream first control gate component remains open until low tide. When the tide recedes, the upstream first control gate component closes, and the downstream second control gate component opens, allowing a large amount of water to flow out through the downstream second control gate component. This completes most of the water exchange process in the inland river. Before the next high tide, the downstream second control gate component remains open. Over time, this ensures a continuous unidirectional flow in the inland river, increases water circulation, and thus improves the water quality of the inland river.

[0033] This design utilizes natural tidal energy to replenish and replace water in the inland river through multiple gates. At the same time, it rationally adjusts the opening and closing of the first and second control gate components upstream and downstream, thereby ensuring the long-term unidirectional flow of the inland river, increasing water circulation, and thus improving the water quality of the inland river.

[0034] Furthermore, the first control gate assembly includes a mounting plate 18 fixed to the opposite side of the river channel 1, with a circular through groove 33 in the middle of the mounting plate 18; a connecting strip 17 fixed to the side wall of the mounting plate 18, with a central shaft 15 fixed to the bottom of the connecting strip 17; two rotatable sector plates 16 disposed inside the circular through groove 33, with the two sector plates 16 rotatably connected to the central shaft 15 through mounting rings at their central ends, forming a semicircle when the two sector plates 16 are combined; two sets of meshing transmission assemblies are also provided on the mounting plate 18, which are used to drive the operation of the corresponding sector plates 16; a triggering system is also provided on the two sets of meshing transmission assemblies, which is used to control the opening and closing of the first control gate assembly and the second control gate assembly when tides occur.

[0035] Since the two sector plates 16 are set inside the circular through groove 33, and can rotate around the central axis 15 inside the circular through groove 33, as shown... Figures 3-4 As shown, since the two sector plates 16 can form a semicircle when they are combined, when the tide occurs, the triggering system drives the two sets of meshing transmission components to operate, thereby causing the two sector plates 16 to combine or separate. Specifically... Figure 3 As shown, during high tide, the two sector plates 16 deflect upwards, allowing a large amount of water to flow into the inner canal through the open area at the bottom of the two sector plates 16. At this point, the water level does not exceed the radius of the circular channel 33. Due to the rising water level, the structural characteristics of the system trigger the expansion of the area below the two sector plates 16. Figure 2As shown in the diagram, when the tide recedes, the two sector plates 16 can deflect downwards and merge, thereby closing the first control gate assembly and blocking the inflow of passenger water into the inner canal. At the same time, by triggering the structural characteristics of the system, the second control valve assembly is opened, allowing the water in the inner canal to flow out through the second control gate assembly.

[0036] Furthermore, each meshing transmission assembly includes a mounting strip 12 disposed on the mounting plate 18, and the mounting strip 12 can move up and down inside the long groove on the mounting plate 18, and a first rack 13 fixed to the bottom of the mounting strip 12; it also includes an arc plate 34 fixed to the arc edge of the fan-shaped plate 16, the outer wall of the arc plate 34 is provided with arc teeth 14, and the arc teeth 14 mesh with the first rack 13.

[0037] Because the arc-shaped tooth 14 meshes with the first rack 13, and the first rack 13 is fixed to the bottom of the mounting strip 12, the mounting strip 12 can slide up and down inside the long groove of the mounting plate 18, such as... Figure 3 As shown, when the two mounting strips 12 move upward, they can cause the left sector plate 16 to deflect clockwise and the right sector plate 16 to deflect counterclockwise, so that the two sector plates 16 move relative to each other, and the area under the two sector plates 16 gradually expands. Similarly, when the two mounting strips 12 move downward, the area under the two sector plates 16 gradually shrinks until it closes, thereby blocking the flow of passenger water into the inner canal.

[0038] Furthermore, the triggering system includes L-shaped frames 9 fixed to the top of the two mounting strips 12 respectively, with a float 10 at the bottom of the vertical section of each L-shaped frame 9 for sensing water level changes; and a spring 11 connected to the lower surface of the horizontal section of the L-shaped frame 9 and the upper surface of the mounting plate 18 for resetting the L-shaped frame 9; it also includes a connecting plate 4 fixed to the top of the horizontal sections of the two L-shaped frames 9, and a mounting frame 6 set on one side of the river channel 1. The opposite ends of the mounting frame 6 and the connecting plate 4 are respectively provided with a resistor strip 7 and an electric block sliding sleeve, and the electric block sliding sleeve can slide on the resistor strip 7. When the tide rises or falls, the connecting plate 4 contacts or separates from the mounting frame 6, which is used to control the closing and opening of the second control gate assembly; it also includes a terminal block 5 set on the mounting frame 6 for connecting an external power supply.

[0039] The triggering system can adaptively move up and down according to changes in water level during tidal periods, thereby opening or closing the meshing transmission assembly and the second control gate assembly. Figure 3-4As shown, during high tide, the float 10 can move upward according to the water level. The mounting strip 12 is connected to the horizontal section of the L-shaped frame 9. Therefore, when the water level rises, it can drive the mounting strip 12 to move upward, thereby causing the two fan-shaped plates 16 to deflect upward and open the first control gate assembly. At the same time, the connecting plate 4 fixed to the top of the two L-shaped frames 9 moves upward, which can drive the electric sliding sleeve at the end of the connecting plate 4 to contact the resistor strip 7. The microcontroller inside the system receives the trigger information and analyzes the trigger signal, thereby controlling the second control gate assembly to close. Similarly, when the tide recedes, the L-shaped frame 9 is reset by the action of the spring 11, and the float 10 moves downward according to the water level, thereby causing the first control gate assembly to close and the second control gate assembly to open, and the inner river water flows downstream.

[0040] As one way to display the range of water level changes, the mounting bracket 6 is also equipped with an indicator light 3 to display the upstream water level changes.

[0041] like Figure 2 As shown, by observing the flashing intensity of indicator light 3 at this location, the intensity of tidal energy or changes in upstream water level can be understood. In this embodiment, the flashing intensity is adjusted by the magnitude of the current. Since the electric sliding sleeve at the end of the connecting plate 4 can move up and down on the resistor bar 7, and the top of the resistor bar 7 is the input end, connected to the external power supply on the terminal 5, when the electric sliding sleeve contacts the resistor bar 7 and moves on the resistor bar 7, the resistor bar 7 can be connected in series with the electric sliding sleeve to form a sliding rheostat, such as... Figure 1 As shown, when the tide rises, the electric sliding sleeve moves closer to the connection end of the resistor bar 7, the resistance of the sliding rheostat decreases and the current increases, thereby increasing the flashing intensity of the indicator light 3. Similarly, when the tide recedes, the flashing intensity decreases.

[0042] As another implementation of displaying the range of water level changes, the river channel 1 is also provided with an indicator plate 8 relative to the mounting frame 6, and the indicator plate 8 is provided with a scale 32 on the side wall near the connecting plate 4.

[0043] By observing the position of the connecting plate 4 pointing to scale 32, one can understand the magnitude of tidal energy and the extent of water level rise.

[0044] Example 2

[0045] In another embodiment of the present invention, the second control gate assembly includes a mounting frame 19 fixed on the opposite side of the river channel 1, and a linkage mechanism disposed on the mounting frame 19. It also includes a baffle 20 disposed on the linkage mechanism, and the linkage mechanism is used to control the closing or separation of the baffle 20 from the mounting frame 19. The linkage mechanism includes two sets of linkage transmission assemblies disposed on the mounting frame 19, and the baffle 20 is disposed between the two sets of linkage transmission assemblies.

[0046] The linkage mechanism allows control of the opening and closing of the mounting frame 19 and the baffle 20, thereby controlling the opening and closing of the second control gate assembly. Figure 5-6 As shown, when the microcontroller converts the trigger signal of the triggering system into an operating signal and sends it to the linkage mechanism, the linkage mechanism can control the baffle 20 and the mounting frame 19 to close, thereby closing the second control gate assembly. When the trigger signal of the triggering system is interrupted, the linkage mechanism controls the baffle 20 to run, so that a large amount of water flows downstream through the mounting frame 19. This process, through the linkage of the first control gate assembly and the second control gate assembly, realizes the replacement of most of the water in the inland river according to the tidal energy change, thereby realizing the transformation of the river with no obvious upstream and downstream reciprocating flow from bidirectional flow to unidirectional flow. This design uses the tidal power of nature to participate in water quality improvement and solves the problem of water circulation in the inland river system. It is an effective, low-consumption, intelligent and green water quality improvement method.

[0047] Furthermore, each linkage transmission assembly includes a transmission frame 31 fixed to the side wall of the baffle 20 away from the first control gate assembly, and a first transmission rod 26 and a second transmission rod 25 rotatably connected to the inner and outer sides of the bottom of the transmission frame 31, respectively. The other ends of the first transmission rod 26 and the second transmission rod 25 are rotatably connected to the first pin 27 and the second pin 28 in the middle of the vertical section of the mounting frame 19, respectively, and the first pin 27 is located in the inner lower part of the second pin 28. It also includes an L-shaped rod 30 rotatably connected to the middle of the transmission frame 31 through a mounting shaft. It also includes a drive system provided on the mounting frame 19 for the operation and rotation of the L-shaped rod 30.

[0048] like Figure 7 As shown, the second transmission rod 25 and the first transmission rod 26 are not on the same plane, and the second pin 28 of the second transmission rod 25 is positioned above and outside the first pin 27 at the end of the first transmission rod 26, as shown. Figure 5 As shown, when the drive system drives the L-shaped rod 30 to rotate, the baffle 20 can be deflected through the transmission action of the second transmission rod 25 and the first transmission rod 26, thereby causing the baffle 20 to close or separate from the mounting frame 19, and thus causing the second control gate assembly to close or operate.

[0049] Furthermore, each drive system includes a rotatable connecting shaft disposed on the inner wall of the vertical section of the mounting frame 19, an end of the L-shaped rod 30 away from the transmission frame 31 fixedly connected to the connecting shaft, and a transmission gear 29 fixed on the connecting shaft; it also includes an electric telescopic rod 22 disposed at the end of the horizontal section of the mounting frame 19, the telescopic end of the electric telescopic rod 22 being fixedly connected to a second rack 24 via a connecting block 23, and the second rack 24 meshing with the transmission gear 29.

[0050] Since both the L-shaped rod 30 and the transmission gear 29 are fixedly connected to the connecting shaft, the microcontroller controls the electric telescopic rod 22 at this location, i.e., adjusts the extension and retraction of the electric telescopic rod 22, thereby opening and closing the baffle 20 and the mounting frame 19. When the triggering system is triggered, i.e., the electric telescopic rod 22 receives the trigger signal from the microcontroller, it retracts, causing the transmission gear 29, which meshes with the second rack 24, to rotate clockwise. Figure 7 As shown, the L-shaped rod 30 rotates clockwise, which causes the baffle 20 to deflect downward, thus closing the baffle 20 with the mounting frame 19. Similarly, when the signal is disconnected, the baffle 20 separates from the mounting frame 19, which opens the second control valve assembly, allowing water to flow downstream through the mounting frame 19.

[0051] A method for water replenishment and replacement through multi-gate control, applied to the aforementioned system for water replenishment and replacement through multi-gate control, includes the following steps:

[0052] S1: During high tide, the first control gate component upstream is opened and the second control gate component is closed, so that a large amount of water flows into the river channel between the first control gate component and the second control gate component through the tidal action, that is, several channels enter the inland river.

[0053] S2: The first control gate assembly at the upstream position remains open until the tide recedes;

[0054] S3: When the tide recedes, the first control gate component upstream closes, while the second control gate component downstream of the river opens. A large amount of water flows out through the location of the second control gate component downstream, thus completing the process of exchanging most of the water in the inner river.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolted connections, etc.

[0056] The foregoing, in conjunction with embodiments and accompanying drawings, has clearly and completely described the concept, specific structure, and resulting technical effects of the present invention, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the possibility of forming a better connection structure by adding or reducing connecting accessories, depending on the specific implementation.

[0057] The above description of the specific embodiments of the present invention is only for further explanation of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. A system for water replenishment and replacement through multi-gate control, characterized in that, include: River channel (1); The first control gate assembly and the second control gate assembly are respectively set in the upstream and downstream sections of the river channel (1), and also include a plurality of channels (2) set in the river channel (1) and placed between the first control gate assembly and the second control gate assembly. When the tide rises, the upstream first control gate assembly is opened and the downstream second control gate is closed. When the tide recedes, the upstream first control gate assembly is closed and the downstream second control gate is opened. The first control gate assembly includes a mounting plate (18) fixed on the opposite side of the river channel (1), and a circular through groove (33) is provided in the middle of the mounting plate (18). And a connecting strip (17) fixed to the side wall of the mounting plate (18), and a central shaft (15) is fixed to the bottom of the connecting strip (17); It also includes two rotatable sector plates (16) disposed inside the circular through groove (33), and the two sector plates (16) are rotatably connected to the central shaft (15) through the mounting ring at their central ends respectively. When the two sector plates (16) are combined, they form a semicircle. The mounting plate (18) is also provided with two sets of meshing transmission components, which are used to drive the operation of the corresponding sector plate (16); It also includes a triggering system installed on the two sets of meshing transmission components, which is used to control the opening and closing of the first control gate assembly and the second control gate assembly when the tide occurs; Each of the meshing transmission components includes a mounting strip (12) disposed on the mounting plate (18), and the mounting strip (12) can move up and down inside the long groove on the mounting plate (18), and a first rack (13) fixed at the bottom of the mounting strip (12). It also includes an arc plate (34) fixed to the arc edge of the fan-shaped plate (16), the outer wall of the arc plate (34) is provided with arc teeth (14), and the arc teeth (14) mesh with the first rack (13); The triggering system includes an L-shaped frame (9) fixed to the top of the two mounting strips (12) respectively, and a float (10) is provided at the bottom of the vertical section of each L-shaped frame (9) for sensing water level changes; and the spring connecting the lower surface of the horizontal section of the L-shaped frame (9) to the upper surface of the mounting plate (18). (11) is used for resetting the L-shaped frame (9); It also includes a connecting plate (4) fixed to the top of the horizontal section of the two L-shaped frames (9), and an installation frame (6) set on one side of the river channel (1). The opposite ends of the installation frame (6) and the connecting plate (4) are respectively provided with a resistor strip (7) and an electric block sliding sleeve. The electric block sliding sleeve can slide on the resistor strip (7). When the tide rises or falls, the connecting plate (4) contacts or separates from the installation frame (6) to control the closing and opening of the second control gate assembly. It also includes a terminal block (5) provided on the mounting bracket (6) for connecting an external power supply.

2. The system for water replenishment and replacement via multi-gate control as described in claim 1, characterized in that: The mounting bracket (6) is also equipped with an indicator light (3) to display changes in the upstream water level.

3. The system for water replenishment and replacement via multi-gate control as described in claim 1, characterized in that: The river channel (1) is also provided with an indicator plate (8) relative to the mounting frame (6), and the indicator plate (8) is provided with a scale (32) on the side wall near the connecting plate (4).

4. A system for water replenishment and replacement via multi-gate control according to claim 1, characterized in that: The second control gate assembly includes a mounting frame (19) fixed on the opposite side of the river channel (1), and a linkage mechanism disposed on the mounting frame (19), and also includes a baffle (20) disposed on the linkage mechanism, and the linkage mechanism is used to control the closing or separation of the baffle (20) and the mounting frame (19); The linkage mechanism includes two sets of linkage transmission assemblies disposed on the mounting frame (19), and the baffle (20) is disposed between the two sets of linkage transmission assemblies.

5. A system for water replenishment and replacement via multi-gate control according to claim 4, characterized in that: Each of the linkage transmission assemblies includes a transmission frame (31) fixed to the side wall of the baffle (20) away from the first control gate assembly, and a first transmission rod (26) and a second transmission rod (25) rotatably connected to the inner and outer sides of the bottom of the transmission frame (31), respectively. The other ends of the first transmission rod (26) and the second transmission rod (25) are rotatably connected to the first pin (27) and the second pin (28) in the middle of the vertical section of the mounting frame (19), respectively, and the first pin (27) is located inside and below the second pin (28). It also includes an L-shaped rod (30) that is rotatably connected to the middle of the transmission frame (31) via a mounting shaft; It also includes a drive system mounted on the mounting frame (19) for the operation and rotation of the L-shaped rod (30).

6. A system for water replenishment and replacement via multi-gate control according to claim 5, characterized in that: Each drive system includes a rotatable connecting shaft disposed on the inner wall of the vertical section of the mounting frame (19), the end of the L-shaped rod (30) away from the transmission frame (31) being fixedly connected to the connecting shaft, and a transmission tooth (29) fixed on the connecting shaft. It also includes an electric telescopic rod (22) disposed at the end of the horizontal section of the mounting frame (19). The telescopic end of the electric telescopic rod (22) is fixedly connected to a second rack (24) via a connecting block (23), and the second rack (24) meshes with the transmission gear (29).

7. A method for water replenishment and replacement through multi-gate control, characterized in that, The system for water replenishment and replacement via multi-gate control, as described in claim 1, comprises the following steps: S1: During high tide, the first control gate assembly upstream is opened and the second control gate assembly is closed, so that a large amount of water flows into the river channel (1) between the first control gate assembly and the second control gate assembly through the tidal action, that is, several channels (2) enter the inland river channel; S2: The first control gate assembly at the upstream position remains open until the tide recedes; S3: When the tide recedes, the first control gate assembly upstream closes, while the second control gate assembly downstream opens, allowing a large amount of water to flow out through the second control gate assembly downstream, thus completing most of the inner canal's drainage process. The process of one water exchange.

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