Hydrodynamic reconstruction method of Tesla valve tidal river network based on plane and vertical combination

Abstract

The present invention discloses a method for hydrodynamic reconstruction of a tidal river network based on a Tesla valve in a planar and vertical combination. The method comprises the following steps: first, in the planar form of the river channel, the main upstream seawater channel in the tidal river network is designed into a structural form of a Tesla valve; second, in the vertical direction of the river channel, a Tesla valve-like structure is also adopted, and a directional guide structure is set near the riverbed, so that the streamline is smooth when the water flows toward the ocean, and the water flow resistance is increased when the water flows upstream from the ocean to the river channel; the present invention achieves effective suppression of the upstream salt tide by installing a structure similar to a Tesla valve at the inflow and upstream between the ocean and the river channel without using movable components such as gates, while not cutting off the connectivity of the water body, having little impact on fish migration and the connectivity of the ecosystem, and more effectively blocking the high-concentration salt water body at the bottom, thereby promoting the unidirectional flow of water and the discharge of pollutants in the river channel of the tidal river network area.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulics and river dynamics, and in particular to a hydrodynamic reconstruction method of a Tesla valve tidal river network based on a planar and vertical combination. Background Art

[0002] River estuaries where rivers meet the sea often have complex river networks. These networks, influenced by both tides and runoff, often present complex hydrodynamic structures and water environmental problems. First, saltwater intrusion caused by high tides can flow upstream along river channels, impacting coastal cities' access to freshwater resources and water quality within the river network. Second, the cyclical rise and fall of tides causes bidirectional reciprocating motion in tidal river networks. The back-and-forth oscillation of water in some river sections prevents the effective discharge of pollutants, leading to deterioration of the water environment. Currently, artificially constructed tidal gates and other structures can alleviate these problems to a certain extent through opening and closing operations.

[0003] However, artificially constructed tide gates form a physical barrier to the water body during closure, destroying the connectivity of the water system and having a negative impact on the aquatic ecosystem, especially fish migration. In addition, the construction and daily operation and maintenance of tide gates involve complex mechanized operations, which require high construction and management costs. The reliability of the mechanical system will continue to decrease as the operating time increases. Therefore, it is urgent to find a fixed river channel structure that can not only suppress the upward movement of salt tides and promote unidirectional flow of water without destroying the connectivity of water bodies, but also support the hydrodynamic reconstruction and water environment improvement of tidal river network areas. Summary of the Invention

[0004] The present invention provides a method for hydrodynamic reconstruction of a tidal river network using a Tesla valve based on a planar and vertical combination, which can effectively solve the problem proposed in the above background technology that artificially constructed tide gates form a physical barrier to the water body during closure, destroy the connectivity of the water system, and have a negative impact on the aquatic ecosystem, especially fish migration. In addition, the construction and daily operation and maintenance of tide gates involve complex mechanized operations, the required construction and management costs are high, and the reliability of the mechanical system will continue to decrease as the operating time increases.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for reconstructing the hydrodynamics of a tidal river network based on a combination of planar and vertical Tesla valves, wherein the planar and vertical Tesla valves are arranged in a river channel, and the river channel is designed to resemble a Tesla valve, thereby reconstructing the hydrodynamics of the tidal river network and effectively suppressing saltwater intrusion without affecting the flood discharge capacity. The method specifically comprises the following steps:

[0006] Step 1: Based on the river channel plan, the main upstream channel of the tidal river network is designed to have a Tesla valve structure.

[0007] Step 2: Vertically in the river channel, a Tesla-like valve structure is also used. A directional diversion structure is set up near the riverbed to smooth the flow line when the water flows toward the ocean. When the water flows upstream from the ocean to the river channel, the water flow resistance increases.

[0008] Step three: specifically design a Tesla-like valve structure for use in tidal river networks, and arrange the Tesla-like valve structure at the river flow end and the ocean upstream end.

[0009] According to the above technical solution, in steps one and two, specifically in the river plane and vertically upwards, the position of the river estuary is set to a Tesla-like valve structure, so that when water flows toward the ocean, and when seawater flows upstream from the ocean to the river, it needs to pass through this Tesla-like valve structure.

[0010] According to the above technical solution, in steps one and two, when the Tesla-like valve structure is arranged at the intersection of the river and the ocean, it is necessary to arrange it specifically according to the structural shape of the location and analyze the water flow characteristics in the river basin. The water flow characteristics specifically include the water flow velocity, wave characteristics and wind speed in the river basin.

[0011] At the same time, the influence of the river channel shape on the fluid inertia is determined, so that the arranged Tesla-like valve structure conforms to the structural shape of the river channel. By adjusting the layout of the designed Tesla-like valve, it can adapt to the expected flow hydraulics of the river channel and meet the actual requirements of the flow in the river basin.

[0012] According to the above technical solution, in step three, before the specific arrangement of the Tesla-like valve structure, it is necessary to select and determine the material of the Tesla-like valve structure. It is necessary to select corrosion-resistant, wear-resistant, and high-temperature resistant materials as the main material of the Tesla-like valve structure. The selected materials include alloy materials or new composite materials. At the same time, the underwater part and the fixed parts of the Tesla-like valve structure need to be treated with anti-corrosion to ensure that the Tesla-like valve structure can work stably for a long time in the natural riverbed environment.

[0013] According to the above technical solution, in step three, within the Tesla-like valve structure, the impact buffer area between the Tesla-like valve structure and the seawater is thickened, that is, the wing-shaped obstacle area inside the Tesla-like valve structure is thickened, so that the Tesla-like valve structure can effectively resist the impact of seawater during the buffering process of upstream seawater, and prevent the buffer area from being severely worn due to long-term impact.

[0014] According to the above technical solution, in step three, when the Tesla-like valve structure is specifically arranged, the number of Tesla-like valve structures to be arranged needs to be determined based on the width of the river channel and the flow rate of the river water, so that the number of Tesla-like valve structures to be arranged can effectively transport the river fluid. At the same time, a control valve is set at the water inlet of the arranged multiple Tesla-like valve structures, and the opening and closing state of the corresponding Tesla-like valve structure is controlled by the control valve.

[0015] According to the above technical solution, the number and shape of channels inside the Tesla-like valve structure are adjusted at the same time, so that the flow capacity of the arranged Tesla-like valve structure can meet the transportation demand for river flow, and improve the control ability of the Tesla-like valve structure on the river fluid, and improve the regulation accuracy of the Tesla-like valve structure on the flow of river fluid.

[0016] According to the above technical solution, in step three, advanced monitoring sensor equipment needs to be arranged and installed inside the Tesla-like valve structure to monitor the flow rate and flow velocity of river water flowing through the Tesla-like valve structure, and by adjusting the opening and closing number and opening and closing degree of the Tesla-like valve, precise control of the river flow can be achieved.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0018] 1. By designing the main seawater upstream channel in the tidal river network into a Tesla valve shape in the river channel plane, and by designing the river channel into a Tesla valve shape, it is possible to effectively suppress the intrusion of saltwater without affecting the flood discharge capacity. In addition, in the vertical direction, a structure similar to the Tesla valve is also adopted, and a directional diversion structure is set near the riverbed. This makes the streamline smooth when the water flows toward the ocean, while the water flow resistance increases when the water flows upstream from the ocean to the river channel. In addition, because the density of salt water is greater than that of fresh water, a saltwater wedge with high bottom concentration and low surface concentration is often formed during the upstream process. Installing the diversion device near the riverbed can effectively increase the bottom water resistance and better prevent the upstream movement of saltwater.

[0019] By installing a structure similar to a Tesla valve at the inflow and upstream between the ocean and the river, without using movable components such as gates, the upstream of the salt tide is effectively suppressed, and the traditional tide gate structure is replaced, solving the problem that the construction and daily operation and maintenance of traditional tide gates involve complex mechanized operations and high construction and management costs. At the same time, it will not cut off the connectivity of water bodies, and has less impact on fish migration and ecosystem connectivity, so that high-concentration salt water bodies at the bottom are more effectively blocked, which promotes the one-way flow of water bodies and the discharge of pollutants in the river channels of tidal river networks.

[0020] 2. By arranging the Tesla-like valve structure according to the structural shape of the intersection of the river and the ocean, analyzing the water flow characteristics in the river basin, and determining the influence of the river channel shape on the fluid inertia, the arranged Tesla-like valve structure is made to conform to the structural shape of the river. By adjusting the layout of the Tesla-like valve, it can adapt to the expected flow hydraulics of the river and meet the actual requirements of the flow in the river basin. The monitoring sensor equipment is arranged and installed inside the Tesla-like valve structure to monitor the flow rate and flow velocity of the river water flowing through the Tesla-like valve structure. By adjusting the number and degree of opening and closing of the Tesla-like valve, precise control of the river flow is achieved.

[0021] 3. By selecting corrosion-resistant, wear-resistant and high-temperature resistant materials as the main materials of the Tesla-like valve structure, and subjecting the underwater part and fixed parts of the Tesla-like valve structure to anti-corrosion treatment, the Tesla-like valve structure is guaranteed to work stably for a long time in the natural riverbed environment. At the same time, the impact buffer area with seawater in the Tesla-like valve structure is thickened, that is, the wing-shaped obstacle area inside the Tesla-like valve structure is thickened, so that the Tesla-like valve structure can effectively resist the impact of seawater during the buffering process of upstream seawater, and prevent the buffer area from being severely worn due to long-term impact, thereby ensuring the long-term and stable use of the valve body.

[0022] 4. By determining the number of Tesla-like valve structures to be arranged according to the width of the river and the flow rate of the river water, the number of Tesla-like valve structures to be arranged can effectively transport the river fluid. At the same time, control valves are set at the water inlets of the arranged multiple Tesla-like valve structures, and the opening and closing states of the corresponding Tesla-like valve structures are controlled by the control valves, so that the flow capacity of the arranged Tesla-like valve structures can meet the transportation requirements of the river flow, and improve the control ability of the Tesla-like valve structures on the river fluid, and improve the regulation accuracy of the Tesla-like valve structures on the flow of river fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached figure:

[0025] Figure 1 is a flow chart of the steps of the method of the present invention;

[0026] Figure 2 Schematic diagram of the specific arrangement of the Tesla-like valve structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the flow of water in the Tesla-like valve structure of the present invention. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] Example: Figure 1-3 As shown, the present invention provides a technical solution, based on a method for hydrodynamic reconstruction of a tidal river network using a planar and vertical combination of Tesla valves, wherein the planar and vertical combination of Tesla valves are arranged in a river channel, and the river channel is designed into a Tesla valve shape to achieve hydrodynamic reconstruction of the tidal river network. This effectively suppresses saltwater intrusion without affecting the flood discharge capacity, and specifically comprises the following steps:

[0030] Step 1: Based on the river channel plan, the main upstream channel of the tidal river network is designed to have a Tesla valve structure.

[0031] Step 2: Vertically in the river channel, a Tesla-like valve structure is also used. A directional diversion structure is set up near the riverbed to smooth the flow line when the water flows toward the ocean. When the water flows upstream from the ocean to the river channel, the water flow resistance increases.

[0032] Step three: specifically design a Tesla-like valve structure for use in tidal river networks, and arrange the Tesla-like valve structure at the river flow end and the ocean upstream end.

[0033] Based on the above technical solution, in steps one and two, specifically in the river plane and vertically upwards, the position of the river estuary is set to a Tesla-like valve structure, so that when water flows toward the ocean, and when seawater flows upstream from the ocean to the river, it needs to pass through this Tesla-like valve structure.

[0034] Based on the above technical solution, in steps one and two, when the Tesla-like valve structure is arranged at the intersection of the river and the ocean, it is necessary to arrange it specifically according to the structural shape of the location and analyze the water flow characteristics in the river basin. The water flow characteristics specifically include the water flow velocity, wave characteristics and wind speed in the river basin.

[0035] At the same time, the influence of the river channel shape on the fluid inertia is determined, so that the arranged Tesla-like valve structure conforms to the structural shape of the river channel. By adjusting the layout of the designed Tesla-like valve, it can adapt to the expected flow hydraulics of the river channel and meet the actual requirements of the flow in the river basin.

[0036] Based on the above technical solution, in step three, before the specific arrangement of the Tesla-like valve structure, it is necessary to select and determine the material of the Tesla-like valve structure. It is necessary to select corrosion-resistant, wear-resistant, and high-temperature resistant materials as the main material of the Tesla-like valve structure. The selected materials include alloy materials or new composite materials. At the same time, the underwater part and fixed parts of the Tesla-like valve structure need to be treated with anti-corrosion to ensure that the Tesla-like valve structure can work stably for a long time in the natural riverbed environment.

[0037] Based on the above technical solution, in step three, within the Tesla-like valve structure, the impact buffer area between the Tesla-like valve structure and the seawater is thickened, that is, the wing-shaped obstacle area inside the Tesla-like valve structure is thickened, so that the Tesla-like valve structure can effectively resist the impact of seawater during the buffering process of upstream seawater, and prevent the buffer area from being severely worn due to long-term impact.

[0038] Based on the above technical solution, in step three, when the Tesla-like valve structure is specifically arranged, the number of Tesla-like valve structures to be arranged needs to be determined according to the width of the river channel and the flow rate of the river water, so that the number of Tesla-like valve structures to be arranged can effectively transport the river fluid. At the same time, a control valve is set at the water inlet of the arranged multiple Tesla-like valve structures, and the opening and closing state of the corresponding Tesla-like valve structure is controlled by the control valve;

[0039] At the same time, the number and shape of channels inside the Tesla-like valve structure are adjusted so that the flow capacity of the arranged Tesla-like valve structure can meet the transportation demand for river flow, and improve the control ability of the Tesla-like valve structure on the river fluid, and improve the regulation accuracy of the Tesla-like valve structure on the flow of river fluid.

[0040] Based on the above technical solution, in step three, advanced monitoring sensor equipment needs to be arranged and installed inside the Tesla-like valve structure to monitor the flow rate and flow velocity of river water flowing through the Tesla-like valve structure, and by adjusting the opening and closing number and opening and closing degree of the Tesla-like valve, precise control of the river flow can be achieved.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A Tesla valve tidal river network hydrodynamic reconstruction method based on a combination of planar and vertical analysis is characterized by: Tesla valves, which are a combination of horizontal and vertical ones, are placed in the river channel. The river channel is designed into the shape of a Tesla valve to achieve hydrodynamic reconstruction of the tidal river network. This effectively suppresses saltwater intrusion without affecting the flood discharge capacity. The specific steps include the following: Step 1: Based on the river channel plan, the main upstream channel of the tidal river network is designed to have a Tesla valve structure. Step 2: Vertically in the river channel, a Tesla-like valve structure is also used. A directional diversion structure is set up near the riverbed to smooth the flow line when the water flows toward the ocean. When the water flows upstream from the ocean to the river channel, the water flow resistance increases. Step three, specifically design a Tesla-like valve structure for use in tidal river networks, and specifically arrange the Tesla-like valve structure at the flow end of the river and the upstream end of the ocean. Within the Tesla-like valve structure, the impact buffer area between the Tesla-like valve structure and the seawater is thickened. When arranging the Tesla-like valve structure, the number of Tesla-like valve structures to be arranged needs to be determined based on the width of the river and the flow rate of the river water. At the same time, the number and shape of the channels inside the Tesla-like valve structure are adjusted so that the flow capacity of the arranged Tesla-like valve structure can meet the transportation demand for the river flow.

2. The Tesla valve tidal river network hydrodynamic reconstruction method based on the combination of planar and vertical analysis according to claim 1 is characterized by: In the steps 1 and 2, specifically in the river plane and vertically upwards, the position of the river estuary is set to a Tesla-like valve structure, so that when water flows toward the ocean, and when seawater flows upstream from the ocean to the river, it needs to pass through this Tesla-like valve structure.

3. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of planar and vertical analysis according to claim 2 is characterized by: In steps 1 and 2, when the Tesla-like valve structure is deployed at the intersection of the river and the ocean, it is necessary to specifically arrange it according to the structural shape of the location and analyze the water flow characteristics in the river basin. The water flow characteristics specifically include the water flow velocity, wave characteristics and wind speed in the river basin. At the same time, the influence of the river channel shape on the fluid inertia is determined, so that the arranged Tesla-like valve structure conforms to the structural shape of the river channel. By adjusting the layout of the designed Tesla-like valve, it can adapt to the expected flow hydraulics of the river channel and meet the actual requirements of the flow in the river basin.

4. The Tesla valve tidal river network hydrodynamic reconstruction method based on a combination of planar and vertical analysis according to claim 1 is characterized by: In the step three, before the specific arrangement of the Tesla-like valve structure, it is necessary to select and determine the material of the Tesla-like valve structure. It is necessary to select corrosion-resistant, wear-resistant, and high-temperature resistant materials as the main material of the Tesla-like valve structure. The selected materials include alloy materials or new composite materials. At the same time, the underwater part and the fixed parts of the Tesla-like valve structure need to be treated with anti-corrosion to ensure that the Tesla-like valve structure can work stably for a long time in the natural riverbed environment.

5. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of planar and vertical analysis according to claim 4 is characterized by: In step three, the wing-shaped obstacle area inside the Tesla-like valve structure is thickened so that the Tesla-like valve structure can effectively resist the impact of seawater during the buffering process of upstream seawater, preventing the buffer area from being severely worn due to long-term impact.

6. The Tesla valve tidal river network hydrodynamic reconstruction method based on a combination of planar and vertical analysis according to claim 4 is characterized by: In step three, the number of Tesla-like valve structures arranged is sufficient to effectively transport river fluids. At the same time, control valves are set at the water inlets of the arranged multiple Tesla-like valve structures to control the opening and closing states of the corresponding Tesla-like valve structures through the control valves.

7. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of planar and vertical analysis according to claim 6 is characterized by: In step three, advanced monitoring sensor equipment needs to be arranged and installed inside the Tesla-like valve structure to monitor the flow rate and flow velocity of river water flowing through the Tesla-like valve structure, and to achieve precise control of river flow by adjusting the number and degree of opening and closing of the Tesla-like valve.

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