An artificial downdraft device based on a deflector

Abstract

The present disclosure provides an artificial downwelling current device based on a deflector. The device includes: a base and a bracket in a rectangular structure, a deflector, a plurality of convex platforms with grooves, a plurality of tension cables, a plurality of cable tensioners, and a plurality of hoisting cables; the bracket is placed perpendicular to the base, and the first bracket frame of the bracket fits with the midline of the base; one end of the hoisting cable is connected to the second bracket frame of the bracket, and the other end is connected to the frame of the deflector for hoisting the deflector; one end of the tension cable is connected to the cable tensioner, and the other end is connected to the second bracket frame of the bracket for restricting the movement of the deflector; the cable tensioner is fixed to the base; the convex platforms with grooves are relatively fixed on the first base frame and the second base frame located on both sides of the bracket. The artificial downwelling current device of the present application forms a downwelling current by blocking and inducing the change of the horizontal tidal current direction, enhances the vertical exchange ability of seawater, and effectively alleviates the low oxygen condition of seawater in the coastal area.

Description

Technical Field

[0001] The present disclosure relates to the field of fluid mechanics, and particularly to an artificial downflow device based on a deflector. Background Art

[0002] Artificial downflow is considered an effective method to alleviate ocean hypoxia. In enclosed fjords and lakes, oxygen can be significantly improved through various vertical water exchange methods. However, due to the extremely high costs of transportation, operation, and maintenance, existing vertical water exchange methods are not practical in coastal waters. Summary of the Invention

[0003] The present disclosure provides an artificial downflow device based on a deflector to at least solve the above technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, there is provided an artificial downflow device based on a deflector, the device comprising: a base, a deflector, a bracket, a plurality of grooved bosses, a plurality of tensioning cables, a plurality of cable tensioners, and a plurality of hoisting cables; the base and the bracket are in a rectangular structure, the bracket is placed perpendicular to the base and the first bracket border of the bracket is fitted to the midline of the base; one end of the hoisting cable is connected to the second bracket border of the bracket, and the other end of the hoisting cable is connected to the border of the deflector for hoisting the deflector; one end of the tensioning cable is connected to the cable tensioner, and the other end of the tensioning cable is connected to the second bracket border of the bracket for restricting the movement of the deflector; the cable tensioner is fixed to the base; the grooved bosses are relatively fixed on the first base border and the second base border located on both sides of the bracket.

[0005] In an implementable embodiment, the device further comprises: a grid pallet, the grid pallet is fitted and fixed to the lower end of the base.

[0006] In an implementable embodiment, the device further comprises: a plurality of counterweights, the plurality of counterweights are fixed to the grid pallet.

[0007] In an implementable embodiment, the border material of the deflector is stainless steel, and the main body material of the deflector is a composite structure formed by coating a tarpaulin woven from polyester fiber with polyvinyl chloride.

[0008] In an implementable embodiment, the grooved bosses are fixed to the base by means of cement and steel bar pouring, and the bracket is fixed to the base by means of cement and steel bar pouring.

[0009] In an implementable embodiment, the materials of the hoisting cable and the tensioning cable are synthetic fibers.

[0010] In one implementable embodiment, the cable tightener is made of stainless steel.

[0011] In one implementable embodiment, the grooved boss is fixed at the midpoints of the first base frame and the second base frame.

[0012] In one implementable embodiment, the grooved boss is used to engage with the groove when the deflector rotates around the second support frame, so as to prevent the deflector from rotating too much.

[0013] In one implementable embodiment, the counterweight is fixed to the grid pallet by means of cement pouring.

[0014] An artificial downwelling device based on a deflector according to the present disclosure includes: a base, a deflector, a support, a plurality of grooved bosses, a plurality of tension cables, a plurality of cable tighteners, and a plurality of lifting cables. The base and the support are in a rectangular structure. The support is placed perpendicular to the base, and the first support frame of the support is fitted to the midline of the base. One end of the lifting cable is connected to the second support frame of the support, and the other end is connected to the frame of the deflector for lifting the deflector. One end of the tension cable is connected to the cable tightener, and the other end is connected to the second support frame of the support for restricting the movement of the deflector. The cable tightener is fixed to the base, and the grooved bosses are relatively fixed to the first base frame and the second base frame on both sides of the support. The artificial downwelling device based on the deflector of the present application forms a downwelling by blocking and inducing the change of the horizontal tidal current direction, enhances the vertical exchange ability of seawater, transports the oxygen-rich seawater in the upper layer to the bottom layer, effectively alleviates the low-oxygen condition of the bottom seawater in the coastal area. The deflector will swing with the overall change of the tidal current direction, and can face the tidal current direction in most tidal current directions, thereby increasing the efficiency of inducing the downwelling. The structure is simple and the cost is low.

[0015] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become easily understood. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, wherein:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 The structural schematic of an artificial downwelling device based on a deflector according to an embodiment of the present disclosure is shown Figure 1 ;

[0019] Figure 2 Shows the structural schematic diagram of an artificial downflow device based on a deflector according to an embodiment of the present disclosure Figure 2 ;

[0020] Figure 3 Shows the structural schematic diagram of a boss with a groove according to an embodiment of the present disclosure.

[0021] Explanation of reference numerals in the figure: 1, base; 2, deflector; 3, bracket; 4, boss with a groove; 5, tensioning cable; 6, cable tensioner; 7, hoisting cable; 8, grid support plate; 9, counterweight; 31, first bracket frame; 32, second bracket frame; 11, first base frame; 12, second base frame. Detailed implementation manners

[0022] To make the objectives, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present disclosure.

[0023] Figure 1 Shows an artificial downflow device based on a deflector according to an embodiment of the present disclosure, as Figure 1 shown. The artificial downflow device includes: a base 1, a deflector 2, a bracket 3, a plurality of bosses 4 with grooves, a plurality of tensioning cables 5, a plurality of cable tensioners 6, and a plurality of hoisting cables 7. Among them, the base 1 and the bracket 3 are in a rectangular structure. The bracket 3 is placed perpendicular to the base 1, and the first bracket frame 31 of the bracket 3 is fitted with the midline of the base 1. One end of the hoisting cable 7 is connected to the second bracket frame 32 of the bracket 3, and the other end is connected to the frame of the deflector 2 for tensioning the deflector 2 to make the deflector 2 in a hoisted state. One end of the tensioning cable 5 is connected to the cable tensioner 6, and the cable tensioner 6 is fixed on the base 1. The other end of the tensioning cable 5 is connected to the second bracket frame 32 of the bracket 3 for restricting the movement of the deflector 2; Figure 1 shown, the cable tensioner 6 is fixed at the four top corners (one of which is not shown) of the base 1. The cable tensioner 6 can apply sufficient tension to keep the tensioning cable 5 in a tensioned state. Through the cable tensioner 6 and the tensioning cable 5, the upward, front-back, and left-right movements of the deflector 2 can be restricted. The boss 4 with a groove is relatively fixed to the first base frame 11 and the second base frame 12 of the base 1. When encountering a tidal current, the deflector 2 rotates to a limited extent with the tidal current around the second bracket frame 32. The boss 4 with a groove can limit the swinging amplitude of the deflector 2, preventing the frame at the bottom end of the deflector 2 from rising too high with the increase of the tidal current velocity, resulting in a decrease in the downflow rate.

[0024] Each structure of the device cooperates with each other. When the horizontal tidal current flows through the deflector, the deflector can rotate around the second support frame border to a limited extent with the tidal current, converting a part of the horizontal kinetic energy into downward kinetic energy to overcome the stratification resistance formed by the vertical density difference of the water body, and the remaining kinetic energy maintains the horizontal movement of the downward flow at the bottom of the device. After the downward flow enters the bottom water body, due to its relatively large dissolved oxygen concentration, it will effectively slow down hypoxia.

[0025] The artificial downward flow device based on the deflector of the present application forms a downward flow by blocking and inducing the change of the horizontal tidal current direction, enhancing the vertical exchange ability of seawater, transporting the oxygen-rich seawater in the upper layer to the bottom layer, effectively alleviating the hypoxia condition of the bottom seawater in the coastal area. The deflector will swing with the overall change of the tidal current direction, and can face the tidal current direction in most tidal current directions to increase the efficiency of inducing the downward flow. The structure is simple and the cost is relatively low.

[0026] Figure 2 Figure 9 shows the structural schematic diagram of an artificial downward flow device based on a deflector according to an embodiment of the present disclosure. Figure 2 .

[0027] As Figure 2 shown, the device further includes: a grid support plate 8, and the grid support plate 8 is fixedly attached to the lower end of the base 1.

[0028] The grid support plate 8 is attached to and fixed to the lower end of the base 1. The grid support plate 8 can increase the contact area between the artificial downward flow device and the seabed to reduce the pressure, and can prevent the artificial downward flow device from sinking into the sediment.

[0029] As Figure 2 shown, the device further includes a plurality of counterweight blocks 9, and the plurality of counterweight blocks 9 are fixed to the grid support plate 8.

[0030] The plurality of counterweight blocks 9 are fixed on the grid support plate 8, used to increase the overall weight of the artificial downward flow device, lower the center of gravity of the artificial downward flow device, increase the overturning moment of the artificial downward flow device, and prevent the artificial downward flow device from being toppled by the tidal current when the tidal current is relatively large. In order to ensure the balance of the artificial downward flow device, the plurality of counterweight blocks 9 should be symmetrically fixed on the grid support plate 8.

[0031] In an implementable manner, the border material of the deflector 2 is stainless steel, and the main body material of the deflector 2 is a composite structure formed by coating a tarpaulin woven from polyester fiber with polyvinyl chloride.

[0032] Stainless steel has strong corrosion resistance and can remain stable in harsh environments such as humidity, acid and alkali. Therefore, the frame material of the guide plate 2 is selected as stainless steel, which can effectively prevent the frame from being damaged by seawater corrosion, thereby extending the life of the guide plate 2. In addition, stainless steel has good mechanical strength and can withstand greater pressure and impact force, ensuring that the guide plate 2 remains stable when subjected to the impact of the tide. The composite structure formed by weaving polyester fiber into a tarpaulin shape and then coating the tarpaulin with polyvinyl chloride is used as the material of the main body of the guide plate 2. The polyester fiber is light in weight, so the tarpaulin woven with polyester fiber can reduce the weight of the main body of the guide plate 2. The polyvinyl chloride coating has good waterproofness and wear resistance, which can effectively prevent moisture from penetrating into the inside of the guide plate 2 and resist friction and wear of external objects. Therefore, the composite structure formed by coating the tarpaulin woven with polyester fiber with polyvinyl chloride as the main body of the guide plate 2 can ensure the dryness and stability of the guide plate 2, and has sufficient bearing capacity while the guide plate 2 remains light, which can extend the service life of the guide plate 2 and meet the use requirements in complex environments.

[0033] In one possible implementation manner, the boss 4 with the groove is fixed on the base 1 by means of cement reinforcement casting, and the bracket 3 is fixed on the base 1 by means of cement reinforcement casting.

[0034] The combination of cement and steel bars can form a high-strength, high-toughness composite material that can withstand the influence of various environmental factors. The grooved boss 4 and the bracket 3 are fixed to the base 1 by pouring cement and steel bars, which can prevent the water from eroding the grooved boss 4 and the bracket 3 and improve the bearing capacity of the base 1.

[0035] In one embodiment, the material of the hoisting cable 7 and the tensioning cable 5 is synthetic fiber.

[0036] The hoisting cable 7 and the tensioning cable 5 made of synthetic fiber are light and high-strength. While ensuring strength, the weight of the cable is significantly reduced, which is convenient for operation, and is particularly important for the hoisting cable 7. In addition, it has good wear resistance and corrosion resistance, is more suitable for marine environment, and can maintain a long service life in a poor environment. The synthetic fibers that can be used include polyester, nylon, polypropylene, nylon, etc.

[0037] In one embodiment, the cable tensioner 6 is made of stainless steel.

[0038] The cable tensioner 6 is fixed on the base 1. Since stainless steel has strong corrosion resistance and can remain stable in harsh environments such as humidity, acid and alkali, the cable tensioner 6 is made of stainless steel to effectively prevent the cable tensioner 6 from being damaged by seawater corrosion, thereby extending the life of the cable tensioner 6.

[0039] In one implementable embodiment, the grooved boss 4 is fixed at the midpoints of the first base border 11 and the second base border 12.

[0040] The artificial downwelling current device based on the deflector shown in the embodiments of the present application includes two grooved bosses 4. The grooved bosses 4 can be fixed at the midpoints of the first base border 11 and the second base border 12. In such a fixing manner, the relative balance of the base 1 can be maintained.

[0041] It can be understood that if multiple grooved bosses 4 are provided, they can be evenly installed on the first base border 11 and the second base border 12 respectively, and the grooved bosses 4 on each base border are equidistantly installed relative to the two endpoints of the base border.

[0042] Figure 3 The structural schematic diagram of the grooved boss in the embodiments of the present disclosure is shown.

[0043] As Figure 2 and Figure 3 shown, the grooved boss 4 is used to be stuck in the groove when the deflector 2 rotates around the second support border 32, so as to prevent the deflector 2 from rotating too large an angle.

[0044] The upper border of the deflector 2 is connected to the hoisting cable 7, and the lower border is unrestricted. The deflector 2 rotates around the second support border 32 under the influence of the tidal current. When the tidal current velocity increases, the swing amplitude of the deflector 2 also increases, and even the lower border of the deflector may rotate to the same height as the upper border. This situation will lead to a decrease in the downwelling current flow rate. Therefore, the grooved boss 4 is provided with a groove, which can be used to be stuck in the groove when the deflector 2 rotates under the influence of the tidal current, so as to limit the decrease in the downwelling current flow rate caused by the too high rotation of the lower border of the deflector 2. It can be understood that the position of the groove on the boss can be set at different heights according to the actual water area conditions.

[0045] Since the structure of the grooved boss 4 is similar to that of an artificial fish reef, in addition to enhancing the vertical exchange of seawater and increasing the dissolved oxygen at the bottom layer of the seawater, this device can also take into account some functions of the artificial fish reef and has the effect of regulating the biological environment.

[0046] In one implementable embodiment, the counterweight 9 is fixed on the grid pallet 8 by means of cement pouring.

[0047] The combination of cement and steel bars can form a composite material with high strength and high toughness, which can withstand the influence of various environmental factors. The counterweight 9 is fixed on the grid pallet 8 by means of cement pouring, which can not only prevent the erosion of the water area on the counterweight 9 but also improve the bearing capacity.

[0048] It can be understood that the grid pallet 8 can also be fixed to the base 1 by means of cement pouring.

[0049] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0050] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this disclosure, "a plurality" means two or more, unless otherwise specifically defined.

[0051] As described above, the above are only specific embodiments of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed in this disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure shall be subject to the protection scope of the claims.

Claims

1. An artificial downdraft device based on a deflector, characterized in that, The device includes: a base (1), a deflector (2), a bracket (3), a plurality of grooved bosses (4), a plurality of tension cables (5), a plurality of cable tensioners (6) and a plurality of hoisting cables (7); The base (1) and the bracket (3) are of a rectangular structure. The bracket (3) is placed perpendicular to the base (1), and the first bracket frame (31) of the bracket (3) is fitted to the midline of the base (1); One end of the hoisting cable (7) is connected to the second bracket frame (32) of the bracket (3), and the other end of the hoisting cable (7) is connected to the frame of the deflector (2) for hoisting the deflector (2); One end of the tension cable (5) is connected to the cable tensioner (6), and the other end of the tension cable (5) is connected to the second bracket frame (32) of the bracket (3) for restricting the movement of the deflector (2); The cable tensioner (6) is fixed to the base (1); The grooved bosses (4) are relatively fixed to the first base frame (11) and the second base frame (12) on both sides of the bracket (3). The grooved bosses (4) are used to catch on the grooves when the deflector (2) rotates around the second bracket frame (32) to prevent the deflector (2) from rotating too large an angle.

2. The device according to claim 1, characterized in that, The device further includes: a grid pallet (8) which is fixedly attached to the lower end of the base (1).

3. The device according to claim 2, characterized in that The device further includes: a plurality of counterweights (9) which are fixed to the grid pallet (8).

4. The device according to claim 1, characterized in that, The frame of the deflector (2) is made of stainless steel, and the main body of the deflector (2) is a composite structure formed by coating a tarpaulin woven from polyester fibers with polyvinyl chloride.

5. The device according to claim 1, characterized in that, The grooved bosses (4) are fixed to the base (1) by means of cement and steel bar casting, and the bracket (3) is fixed to the base (1) by means of cement and steel bar casting.

6. The device according to claim 1, characterized in that, The hoisting cable (7) and the tension cable (5) are made of synthetic fiber.

7. The device according to claim 1, characterized in that, The cable tensioner (6) is made of stainless steel.

8. The device according to claim 1, characterized in that, The grooved bosses (4) are fixed at the midpoints of the first base frame (11) and the second base frame (12).

9. The device according to claim 3, characterized in that, The counterweights (9) are fixed to the grid pallet (8) by means of cement casting.

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