Tesla valve sensitive tidal river network hydrodynamic reconstruction method based on plane and vertical combination

Abstract

The invention discloses a plane and vertical combination-based Tesla valve tidal river network hydrodynamic reconstruction method, which comprises the following steps of: 1, designing a main seawater upstream channel in a tidal river network into a Tesla valve structural form on the form of a river plane; secondly, in the vertical direction of the river channel, a Tesla valve-like structure is adopted, and a directional flow guide structure is arranged at the position close to a riverbed, so that when the water flow flows towards the ocean, the flow line is smooth, and when the water flow traces upwards from the ocean to the river channel, the water flow resistance is increased; structures similar to Tesla valves are installed at the inflow and upstream positions between the ocean and the river channel, movable assemblies such as gates are not used, salty tide upstream is effectively inhibited, meanwhile, water connectivity is not blocked, the influence on fish migration and ecosystem connectivity is small, and the method is suitable for large-scale popularization and application. High-concentration salt-containing water at the bottom is more effectively blocked, and one-way flow of water and pollutant discharge in a riverway of a tidal river network area are promoted.

Description

Technical Field

[0001] The 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] There are often complex river networks in the estuary areas where rivers flow into the sea. Under the influence of tides and runoff, these river networks often have complex hydrodynamic structures and water environment problems. First, the saltwater bodies in the ocean caused by high tides flow upstream along the river channel to form saltwater intrusion, which affects the acquisition of freshwater resources in coastal cities and the water quality in the river network. Secondly, the periodic rise and fall of tides causes the water bodies in the tidal river network area to move back and forth in both directions. The water bodies in some river sections oscillate back and forth and cannot effectively discharge pollutants, causing the water environment to deteriorate. At present, artificially built tide gates and other structures can alleviate the above problems to a certain extent through opening / 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, which has 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 structure that can suppress the upward movement of salt tides and promote unidirectional flow of water without destroying the connectivity of the water body, so as to 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 the 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 the tide gates involve complex mechanized operations, which require high construction and management costs, and the reliability of the mechanical system will continue to decrease as the operating time increases.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a method for hydrodynamic reconstruction of a tidal river network based on a planar and vertical combination of Tesla valves, wherein a planar and vertical combination of Tesla valves is arranged in a river channel, and the river channel is designed into a Tesla valve shape, so as to realize hydrodynamic reconstruction of a tidal river network, and effectively suppress saltwater intrusion without affecting the flood discharge capacity, specifically comprising the following steps:

[0006] Step 1: In terms of the river channel plane, the main seawater upstream channel in the tidal river network is designed into a Tesla valve structure;

[0007] Step 2: In the vertical direction of the river channel, a Tesla-like valve structure is also used to set a directional guide structure near the riverbed, so that the streamline is smooth when the water flows toward the ocean, and the water flow resistance increases when the water flows upstream from the ocean to the river channel;

[0008] Step three, specifically design the Tesla-like valve structure applied to the tidal river network, and specifically arrange the Tesla-like valve structure at the river flow end and the ocean upstream end.

[0009] According to the above technical solution, in step one and step two, the position of the river mouth is set to a Tesla-like valve structure in the river plane and vertically upward, 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 step 1 and step 2, 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, and 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 shape of the river flow channel 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, thereby preventing 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 channel water, so that the number of Tesla-like valve structures to be arranged can effectively transport the river channel fluid, and 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 scheme, 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 over the river fluid, and improve the regulation accuracy of the Tesla-like valve structure over 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 degree of opening and closing 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 plane, and by designing the river into a Tesla valve shape, it is possible to effectively suppress the invasion of saltwater tides 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, so that when the water flows to the ocean, the streamline is smooth, and when the water flows upstream from the ocean to the river, the water flow resistance increases. In addition, since the density of salt water is greater than that of fresh water, a salt water 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 of salt water;

[0019] By installing a Tesla valve-like structure at the inflow and upstream between the ocean and the river, without using active components such as gates, the upstream of the salt tide is effectively suppressed, and the traditional tide gate structure is replaced, solving the problem of complex mechanized operations involved in the construction and daily operation and maintenance of traditional tide gates, and the high construction and management costs. At the same time, it will not cut off the connectivity of water bodies, and has little impact on fish migration and ecosystem connectivity, so that high-concentration salt water bodies at the bottom are more effectively blocked, which promotes the unidirectional flow of water 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. The layout of the Tesla-like valve is adjusted to 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 and velocity of the river water flowing through the Tesla-like valve structure. The flow of the river is precisely controlled by adjusting the number and degree of opening and closing of the Tesla-like valve.

[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 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, thereby ensuring the long-term stable use of the valve body.

[0022] 4. The number of Tesla-like valve structures to be arranged is 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, 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 demand for 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 picture:

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

[0026] Figure 2 It is a 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 a Tesla-like valve structure of the present invention. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with 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 the planar and vertical Tesla valve combined tidal river network hydrodynamic reconstruction method, the planar and vertical Tesla valves are arranged in the river channel, and the river channel is designed into the Tesla valve shape to achieve tidal river network hydrodynamic reconstruction, without affecting the flood discharge capacity, effectively suppressing the saltwater intrusion, specifically comprising the following steps:

[0030] Step 1: In terms of the river channel plane, the main seawater upstream channel in the tidal river network is designed into a Tesla valve structure;

[0031] Step 2: In the vertical direction of the river channel, a Tesla-like valve structure is also used to set a directional guide structure near the riverbed, so that the streamline is smooth when the water flows toward the ocean, and the water flow resistance increases when the water flows upstream from the ocean to the river channel;

[0032] Step three, specifically design the Tesla-like valve structure applied to the tidal river network, and specifically arrange the Tesla-like valve structure at the river flow end and the ocean upstream end.

[0033] Based on the above technical solution, in step one and step two, the position of the river estuary is set to a Tesla-like valve structure in the river plane and vertically upward, 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 step 1 and step 2, 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 shape of the river flow channel 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 channel water flow, so that the number of Tesla-like valve structures to be arranged can effectively transport the river channel fluid, and at the same time, a control valve is arranged 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, improve the control ability of the Tesla-like valve structure over river fluid, and improve the regulation accuracy of the Tesla-like valve structure over river fluid flow.

[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 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 only a preferred example 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 can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A Tesla valve tidal river network hydrodynamic reconstruction method based on a combination of plane and vertical, characterized by: The Tesla valves in combination of plane and vertical are arranged in the river channel, and the river channel is designed into the shape of Tesla valve to realize the hydrodynamic reconstruction of the tidal river network. Under the premise of not affecting the flood discharge capacity, the saltwater intrusion is effectively suppressed. The specific steps include the following: Step 1: In terms of the river channel plane, the main seawater upstream channel in the tidal river network is designed into a Tesla valve structure; Step 2: In the vertical direction of the river channel, a Tesla-like valve structure is also used to set a directional guide structure near the riverbed, so that the streamline is smooth when the water flows toward the ocean, and the water flow resistance increases when the water flows upstream from the ocean to the river channel; Step three, specifically design the Tesla-like valve structure applied to the tidal river network, and specifically arrange the Tesla-like valve structure at the river flow end and the ocean upstream end.

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

3. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of plane and vertical according to claim 2 is characterized by: In step 1 and step 2, 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; At the same time, the influence of the shape of the river flow channel 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 method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of plane and vertical 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 plane and vertical according to claim 4 is characterized by: 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, preventing the buffer area from being severely worn due to long-term impact.

6. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of plane and vertical according to claim 4 is characterized by: In step three, when the Tesla-like valve structures are 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 channel water, so that the number of Tesla-like valve structures to be arranged can effectively transport the river channel 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.

7. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of plane and vertical according to claim 6 is characterized by: 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, improve the control ability of the Tesla-like valve structure over river fluid, and improve the regulation accuracy of the Tesla-like valve structure over river fluid flow.

8. The method for hydrodynamic reconstruction of a Tesla valve tidal river network based on a combination of plane and vertical according to claim 6 is characterized by: In the 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 opening and closing quantity and degree of the Tesla-like valve.

Images