Salt-fresh water exchange protection facility

Abstract

The utility model provides a salt and fresh water exchange protection facility. The salt and fresh water exchange protection facility comprises a collection pool which is arranged at an entrance of a channel, is arranged at the bottom of the channel and is used for collecting density flow entering the channel; the suction and discharge assembly is at least partially arranged in the channel, a water inlet of the suction and discharge assembly is communicated with the bottom of the collection pool, and a water outlet of the suction and discharge assembly penetrates through the bottom wall of the channel to be communicated with the seawater side and is used for discharging density flow; and the vortex eliminating piece is arranged at the water inlet and is used for eliminating the vortex at the water inlet. The utility model solves the problem that the navigation channel in the prior art cannot give consideration to shipping and suppression of seawater upstream.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, and in particular to a salt-fresh water exchange protection facility. Background Art

[0002] Water conservancy projects provide great convenience for people. The waterway at the estuary is affected by the tide. At the tidal estuary, the mixing of fresh water and sea water is an important environmental process. Since the density of sea water is greater than that of fresh water, when the two are mixed, a special flow phenomenon will be formed - heteropycnal flow. Heteropycnal flow refers to the internal flow of fluids caused by density differences. It will cause sea water to flow upstream and form the phenomenon of salt water invading freshwater areas. This phenomenon has a certain impact on the ecological environment. First of all, the invasion of salt water into freshwater areas will change the salinity of the waters and affect the habitat of aquatic organisms. Some freshwater organisms may not be able to adapt to the high-salinity environment, resulting in a decrease in biodiversity. In addition, the mixing of salt water and fresh water may also change the water quality of the river and affect the health of the river ecosystem. The existence of runoff in natural rivers can alleviate or suppress the upstreaming of seawater. In water conservancy projects, a similar approach to that of natural rivers is adopted by setting up tide gates. When the water level in the channel is higher than the sea level and the runoff is large, the tide gates are opened and the outflowing river water is used to alleviate or suppress the upstreaming of seawater. However, setting up tide gates means that the channel is generally closed. The tide gates are only opened when the water level in the channel is high and the flow is large. Normally, the gates are always closed, and navigation in the channel is obstructed and shipping efficiency cannot be exerted.

[0003] From the above, it can be seen that the existing technology has the problem that the waterway cannot take into account both shipping and suppressing the upstream movement of seawater. Utility Model Content

[0004] The main purpose of the utility model is to provide a salt-fresh water exchange protection facility to solve the problem in the prior art that the waterway cannot take into account both shipping and suppressing the upstreaming of seawater.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a salt-fresh water exchange protection facility, including: a collecting tank, which is arranged at the sea entrance of a waterway and at the bottom of the waterway, and is used to collect the heterogeneous flow entering the waterway; a suction and discharge component, which is at least partially arranged inside the waterway, and the water inlet of the suction and discharge component is connected with the bottom of the collecting tank, and the water outlet of the suction and discharge component passes through the bottom wall of the waterway and is connected with the seawater side, and is used to discharge the heterogeneous flow; a vortex eliminater, which is arranged at the water inlet, and is used to eliminate the vortex at the water inlet.

[0006] Furthermore, the suction and discharge assembly includes a first pipe, a second pipe and a third pipe connected in sequence, one end of the first pipe forms a water inlet, and the other end of the third pipe forms a water outlet.

[0007] Furthermore, the suction and drainage assembly also includes a suction and drainage pump, which is arranged on the embankment. The other end of the first pipeline and the other end of the second pipeline are respectively connected to the inlet and outlet of the suction and drainage pump for sucking away the heterogeneous flow in the collection tank.

[0008] Furthermore, the third pipeline is at least partially buried at the bottom of the channel, and the third pipeline portion is arranged at an angle to the channel.

[0009] Furthermore, the third pipeline includes a straight pipe section and a curved pipe section connected in sequence, the straight pipe section forms an angle with the waterway, the curved pipe section has a water outlet, and the curved pipe section fits the bottom wall of the waterway.

[0010] Furthermore, there are multiple third pipelines, and the multiple third pipelines are arranged at intervals along the width direction of the channel.

[0011] Furthermore, the vortex eliminating member is connected to the pool wall of the collecting pool, and one end of the vortex eliminating member away from the pool wall is arranged to be inclined downward.

[0012] Furthermore, the length of the collecting pool is 90m to 100m, and the depth of the collecting pool is 1 to 2 times the depth of the density flow.

[0013] Furthermore, the first pipeline is a reinforced concrete pipe or a steel pipe.

[0014] Furthermore, the suction and discharge assembly also includes a trash rack, which is arranged below the vortex elimination member and is used to cover the water inlet.

[0015] By applying the technical solution of the utility model, the salt-fresh water exchange protection facility includes a collecting pool, a suction and discharge assembly and a vortex elimination member. The collecting pool is arranged at the sea entrance of the waterway and at the bottom of the waterway, and is used to collect the heterogeneous flow entering the waterway. The suction and discharge assembly is at least partially arranged inside the waterway. The water inlet of the suction and discharge assembly is connected with the bottom of the collecting pool, and the water outlet of the suction and discharge assembly passes through the bottom wall of the waterway and is connected with the seawater side to discharge the heterogeneous flow. The vortex elimination member is arranged at the water inlet to eliminate the vortex at the water inlet. By arranging the collecting pool at the sea entrance of the waterway, the heterogeneous flow passes through the collecting pool due to its own density. The density flow is large and will fall into the bottom of the collecting pool. The water inlet of the suction and discharge assembly is connected to the bottom of the collecting pool to suck away the density flow in the collecting pool and discharge the density flow to the seawater side through the water outlet, thereby realizing the transfer of the density flow and preventing the density flow from upstream affecting the waterway. At the same time, the present application also has a vortex elimination component at the water inlet. The vortex elimination component is arranged at the water inlet to eliminate the eddy current or turbulence at the water inlet, thereby ensuring the navigation safety of ships passing through the collecting pool, meeting the needs of shipping and suppressing the upstreaming of seawater, and solving the problem in the prior art that the waterway cannot take into account both shipping and suppressing the upstreaming of seawater. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram showing an angle of a salt-fresh water exchange protection facility in a specific embodiment of the utility model; and

[0018] Figure 2 A schematic structural diagram showing another angle of a salt-fresh water exchange protection facility in a specific embodiment of the utility model;

[0019] Figure 3 The schematic diagram of the structure of the connection between the vortex elimination member and the trash rack in a specific embodiment of the utility model is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Collection tank; 20. Suction and discharge assembly; 21. First pipeline; 22. Second pipeline; 23. Third pipeline; 231. Straight pipe section; 232. Bend pipe section; 24. Suction and discharge pump; 30. Vortex elimination component; 40. Trash rack; 50. Ship; 100. Waterway. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0025] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] In order to solve the problem in the prior art that the waterway cannot take into account both shipping and suppressing the upstream movement of seawater, the utility model provides a salt-fresh water exchange protection facility.

[0027] like Figures 1 to 3 As shown, the salt-fresh water exchange protection facility includes a collection tank 10, a suction and discharge assembly 20 and a vortex elimination member 30. The collection tank 10 is arranged at the estuary of the channel 100 and at the bottom of the channel 100, and is used to collect the density flow entering the channel 100. The suction and discharge assembly 20 is at least partially arranged inside the channel 100, the water inlet of the suction and discharge assembly 20 is connected to the bottom of the collection tank 10, and the water outlet of the suction and discharge assembly 20 passes through the bottom wall of the channel 100 and is connected to the seawater side, and is used to discharge the density flow. The vortex elimination member 30 is arranged at the water inlet, and is used to eliminate the vortex at the water inlet.

[0028] It should be noted that when seawater approaches the gate of waterway 100, it mixes with the clean water from the upstream side near the gate. Since seawater has a greater density than clean water, the different specific gravities of the two produce flow and form a heterogeneous current. In this application, the heterogeneous current refers to seawater in contact with the clean water in waterway 100.

[0029] By setting up a collecting tank 10 at the estuary of the waterway 100, when the density current passes through the collecting tank 10, due to its own high density, the density current will fall to the bottom of the collecting tank 10, and the water inlet of the suction and discharge component 20 is connected to the bottom of the collecting tank 10, so as to suck away the density current in the collecting tank 10 and discharge the density current to the seawater side through the water outlet, thereby realizing the transfer of the density current and preventing the density current from upstream affecting the waterway 100. At the same time, the present application also provides a vortex elimination member 30 at the water inlet. The vortex elimination member 30 is set at the water inlet to eliminate the vortex or turbulence at the water inlet, thereby ensuring the navigation safety of the ship 50 passing through the collecting tank 10, which not only meets the shipping needs but also suppresses the upstreaming of seawater.

[0030] like Figure 2 As shown, the suction and discharge assembly 20 includes a first pipe 21, a second pipe 22 and a third pipe 23 connected in sequence, one end of the first pipe 21 forms a water inlet, and the other end of the third pipe 23 forms a water outlet.

[0031] Specifically, the first pipe 21 and the second pipe 22 are U-shaped, the extension direction of the first pipe 21 is perpendicular to the length direction of the channel 100, the first pipe 21 is partially arranged at the bottom of the collection tank 10, the density flow passes through the first pipe 21, the second pipe 22 and the third pipe 23 in sequence, and enters the seawater side from the outlet, the first pipe 21, the second pipe 22 and the third pipe 23 are connected at the joints for easy processing and construction, and at the same time, the direction in which the density flow enters the first pipe 21 is perpendicular to the direction of the channel 100, which is also conducive to the suction and discharge assembly 20 absorbing the density flow with a lower flow rate and a larger concentration. Optionally, the extension direction of the first pipe 21 is parallel to the length direction of the channel 100.

[0032] like Figure 2 As shown, the suction and drainage assembly 20 further includes a suction and drainage pump 24 , which is disposed on the second pipeline 22 and is used to suck away the density flow in the collection tank 10 .

[0033] Specifically, the second pipeline 22 is approximately L-shaped, with a portion of the second pipeline 22 buried in the waterway 100 and another portion buried on a bank on one side of the waterway 100 . A maintenance well corresponding to the suction and discharge pump 24 is provided on the bank to facilitate maintenance personnel to inspect and maintain the suction and discharge pump 24 .

[0034] like Figure 1 As shown, the third pipeline 23 is at least partially buried at the bottom of the channel 100 , and a portion of the third pipeline 23 is arranged at an angle to the channel 100 .

[0035] Specifically, the height of one end of the third pipe 23 close to the seawater side is greater than the height of one end of the third pipe 23 close to the collecting tank 10, thereby discharging the density flow collected in the collecting tank 10 below the bottom wall of the waterway 100 to the seawater side. In the present embodiment, the bottom wall of the waterway 100 is tilted downward in the direction close to the seawater side, that is, the height of the waterway 100 close to the collecting tank 10 is greater than the height of the waterway 100 close to the seawater side, thereby achieving the density flow falling on the bottom wall of the waterway 100 to move along the waterway 100 close to the seawater side due to its own weight to slow down the upstream movement of the seawater, and also facilitate the density flow to fall into the collecting tank 10.

[0036] like Figure 1 to Figure 2 As shown, the third pipeline 23 includes a straight pipe section 231 and a curved pipe section 232 connected in sequence, the straight pipe section 231 is at an angle to the waterway 100 , the curved pipe section 232 has a water outlet, and the curved pipe section 232 fits the bottom wall of the waterway 100 .

[0037] Specifically, the straight pipe section 231 is buried in the bottom wall of the channel 100, and the curved pipe section 232 is attached to the bottom wall of the channel 100. The suction and discharge pump 24 is used to suck the density flow in the lower collection tank 10 into the suction and discharge assembly 20. After the density flow entering the suction and discharge assembly 20 is discharged along the third pipe 23, the bottom wall of the channel 100 is inclined, which is conducive to the density flow discharged along the outlet to return to the seawater side. At the same time, only the curved pipe section 232 is arranged on the bottom wall of the channel 100, which can also reduce the erosion of the third pipe 23 by seawater. Optionally, the straight pipe section 231 partially extends out of the bottom wall of the channel 100.

[0038] In this embodiment, there are a plurality of third pipes 23 , and the plurality of third pipes 23 are arranged at intervals along the width direction of the waterway 100 .

[0039] Specifically, multiple third pipes 23 are parallel to the extension direction of the channel 100 and are arranged at intervals. In the present embodiment, the width of the third pipe 23 is smaller than the width of the second pipe 22, thereby increasing the pressure of the density flow in the suction and exhaust assembly 20, thereby accelerating the flow rate of the density flow passing through the third pipe 23, achieving the discharged density flow further away from the collection tank 10, and reducing the density flow near the collection tank 10.

[0040] In another embodiment of the present application which is not shown in the figure, an angle is set between the plurality of third pipes 23, and the area where the density flow is discharged is fan-shaped, which is beneficial to reduce the density of the density flow.

[0041] In the present embodiment, the vortex eliminating member 30 is connected to the pool wall of the collecting pool 10, and one end of the vortex eliminating member 30 away from the pool wall is arranged to be inclined downward.

[0042] Specifically, the vortex eliminating member 30 is L-shaped, one end of the vortex eliminating member 30 is arranged on the pool wall of the collection pool 10, and the other end of the vortex eliminating member 30 is bent downwardly, and the vortex eliminating member 30 blocks the water flow above the water inlet, and the vortex eliminating member 30 is provided with a vortex eliminating hole to prevent the formation of turbulence at the water inlet after the heterogeneous flow enters the first pipe 21, and finally achieves the effect of vortex elimination. Optionally, the vortex eliminating member 30 is made of PVC material.

[0043] In another optional embodiment of the present application, the vortex eliminater 30 is a plate-like structure, and the vortex eliminater 30 is used to divide the upper part of the water inlet into two, so that turbulence is formed below the vortex eliminater 30, thereby preventing the formed vortex from affecting the navigation of the ship 50.

[0044] In this embodiment, the length of the collection tank 10 is 90 m to 100 m, and the depth of the collection tank 10 is 1 to 2 times the depth of the density flow.

[0045] Specifically, when the water flow speed of the waterway 100 is relatively low, the tidal speed is high, the density of the seawater is high, and the area where the density current is easily formed is larger. Therefore, the length of the collecting pool 10 is 90m to 100m, which can better adapt to the generation of the density current. Furthermore, in order to facilitate the generation of the density current, the depth of the collecting pool 10 is 1 to 2 times the depth of the seawater in the waterway 100.

[0046] In this embodiment, the first pipeline 21 is a reinforced concrete pipe or a steel pipe.

[0047] Specifically, the first pipe 21 is located at the bottom of the collection tank 10, and there is seawater in the collection tank 10. Long-term use of seawater will cause great erosion to the first pipe 21. Therefore, the use of steel pipes or reinforced concrete pipes can effectively reduce the erosion of the first pipe 21, thereby facilitating the service life of the suction and discharge assembly 20. Among them, steel pipes are easy to prepare, and reinforced concrete pipes have stronger corrosion resistance and are heavier, and can be selected according to needs. Optionally, the first pipe 21 is made of PVC material.

[0048] like Figures 1 to 3 As shown, the suction and discharge assembly 20 further includes a trash rack 40. The trash rack 40 is disposed below the vortex eliminating member 30, and the trash rack 40 is used to cover the water inlet.

[0049] Specifically, the trash rack 40 is a plurality of grid structures, which is wrapped around the first pipe 21 and covers the water inlet, thereby preventing branches, garbage and other debris from entering the first pipe 21 when the suction and discharge pump 24 sucks and discharges the density flow in the collection tank 10.

[0050] In this embodiment, the vortex elimination member 30 includes a straight plate section and a vertical plate section connected in sequence, the straight plate section is parallel to the bottom surface of the collection tank 10, the vertical plate section is perpendicular to the bottom surface of the collection tank 10, a trash rack 40 is arranged between the vertical plate section and the bottom surface of the collection tank 10, the length of the trash rack 40 is consistent with the length of the inner wall of the collection tank 10, the trash rack 40 is arranged vertically, one end of the trash rack 40 is connected to the vertical plate section, and the other end is connected to the bottom surface of the collection tank 10. The trash rack 40 and the vertical plate section divide the bottom of the collection tank 10 into two parts of different sizes.

[0051] From the above description, it can be seen that the above-mentioned embodiments of the utility model achieve the following technical effects: the salt-fresh water exchange protection facility includes a collecting tank 10, a suction and discharge assembly 20 and a vortex-eliminating member 30, the collecting tank 10 is arranged at the estuary of the waterway 100 and at the bottom of the waterway 100, and is used to collect the heterogeneous flow entering the waterway 100, the suction and discharge assembly 20 is at least partially arranged inside the waterway 100, the water inlet of the suction and discharge assembly 20 is connected to the bottom of the collecting tank 10, the water outlet of the suction and discharge assembly 20 passes through the bottom wall of the waterway 100 and is connected to the seawater side, and is used to discharge the heterogeneous flow, the vortex-eliminating member 30 is arranged at the water inlet, and is used to eliminate the vortex at the water inlet, through the waterway A collecting tank 10 is set at the estuary of 100. When the density current passes through the collecting tank 10, due to its large density, the density current will fall into the bottom of the collecting tank 10. The water inlet of the suction and discharge component 20 is connected to the bottom of the collecting tank 10, thereby sucking away the density current in the collecting tank 10 and discharging the density current to the seawater side through the water outlet, thereby realizing the transfer of the density current and preventing the density current from upstream affecting the waterway 100. At the same time, the present application also has a vortex elimination member 30 at the water inlet. The vortex elimination member 30 is set at the water inlet to eliminate the vortex or turbulence at the water inlet, thereby ensuring the navigation safety of the ship 50 passing through the collecting tank 10, which not only meets the shipping needs but also suppresses the upstreaming of seawater.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "upper", "lower", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A salt-fresh water exchange protection facility, characterized in that: include: A collecting pool (10), the collecting pool (10) being arranged at the estuary of the waterway (100) and at the bottom of the waterway (100), and being used to collect the density flow entering the waterway (100); A suction and discharge assembly (20), wherein the suction and discharge assembly (20) is at least partially arranged inside the waterway (100), a water inlet of the suction and discharge assembly (20) is communicated with the bottom of the collection tank (10), and a water outlet of the suction and discharge assembly (20) passes through the bottom wall of the waterway (100) and is communicated with the seawater side, for discharging the density flow; A vortex eliminating member (30) is arranged at the water inlet and is used to eliminate vortex at the water inlet.

2. The salt-fresh water exchange protection facility according to claim 1, characterized in that: The suction and discharge assembly (20) comprises a first pipe (21), a second pipe (22) and a third pipe (23) connected in sequence, one end of the first pipe (21) forms the water inlet, and the other end of the third pipe (23) forms the water outlet.

3. The salt-fresh water exchange protection facility according to claim 2 is characterized in that: The suction and discharge assembly (20) further comprises a suction and discharge pump (24), which is arranged on the second pipeline (22) and is used to suck away the density flow in the collection tank (10).

4. The salt-fresh water exchange protection facility according to claim 2 is characterized in that: The third pipeline (23) is at least partially buried at the bottom of the waterway (100), and a portion of the third pipeline (23) is arranged at an angle to the waterway (100).

5. The salt-fresh water exchange protection facility according to claim 4 is characterized in that: The third pipe (23) comprises a straight pipe section (231) and a curved pipe section (232) connected in sequence, the straight pipe section (231) forms an angle with the waterway (100), the curved pipe section (232) has the water outlet, and the curved pipe section (232) fits the bottom wall of the waterway (100).

6. The salt-fresh water exchange protection facility according to claim 5 is characterized in that: There are a plurality of the third pipes (23), and the plurality of the third pipes (23) are arranged at intervals along the width direction of the waterway (100).

7. The salt-fresh water exchange protection facility according to claim 1 is characterized in that: The vortex eliminating member (30) is connected to the pool wall of the collecting pool (10), and one end of the vortex eliminating member (30) away from the pool wall is arranged obliquely downward.

8. The salt-fresh water exchange protection facility according to claim 1 is characterized in that: The length of the collecting pool (10) is 90m to 100m, and the depth of the collecting pool (10) is 1 to 2 times the depth of the density flow.

9. The salt-fresh water exchange protection facility according to claim 2, characterized in that: The first pipeline (21) is a reinforced concrete pipe or a steel pipe.

10. The salt-fresh water exchange protection facility according to any one of claims 1 to 9, characterized in that: The suction and discharge assembly (20) further comprises a trash rack (40), wherein the trash rack (40) is arranged below the vortex elimination member (30), and the trash rack (40) is used for covering the water inlet.

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