Local interception device for wide water areas, power plant water intake system

Abstract

The utility model provides a kind of wide-area water area local interception device, power plant water intake system.The wide-area water area local interception device includes: gas supply part, is configured to provide gas;At least one jet component, each group of jet component includes multiple bubble sections, multiple bubble sections in each group of jet component are sequentially arranged in the edge of local water area determined in wide-area water area range, each bubble section is connected with gas supply part, and each bubble section is formed with multiple jet orifices allowing gas to be ejected;Gas supply part provides gas to multiple bubble sections respectively, and the gas ejected by multiple bubble sections forms bubble curtain extended from multiple bubble sections to the liquid surface edge of local water area, to prevent peripheral float into local water area.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a wide-area water local interception device and a power plant water intake system. Background Technology

[0002] Bubble curtain technology can be used to create a bubble curtain over a wide area of ​​water to intercept floating debris in specific areas. This technology can be applied to scenarios requiring the cleanliness of localized sections of a large body of water, such as power plants and oil transportation. For example, power plants are typically located near coastlines or rivers because their condensers require sufficient cooling water. However, floating organisms and debris in oceans and rivers can easily clog water intakes, potentially causing plant shutdowns and directly threatening the stability and security of the power grid. Bubble curtain technology can address this by releasing gas through nozzles in bubble pipes, causing surrounding water to rise and form a bubble curtain. This bubble curtain pushes nearby floating debris away from the water intake, effectively blocking it.

[0003] However, in related technologies, when using bubble curtain technology to locally intercept objects in a wide area of ​​water, there are shortcomings such as uneven distribution of the bubble curtain and uneven air flow, which makes it impossible to effectively intercept floating objects. Utility Model Content

[0004] In view of this, the present invention provides a wide-area water local interception device for power plant water intake system, which at least partially solves the above technical problems and can effectively intercept floating objects.

[0005] A first aspect of this invention provides a localized interception device for a wide-area water body, comprising: an air supply unit configured to supply gas; at least one jetting assembly, each group of the jetting assemblies comprising multiple bubble segments, the multiple bubble segments in each group of the jetting assemblies being sequentially disposed at the edge of a localized water body defined within the wide-area water body, each bubble segment being connected to the air supply unit, and each bubble segment forming multiple jet holes that allow the gas to be ejected; wherein the air supply unit supplies the gas to the multiple bubble segments respectively, and the gas ejected by the multiple bubble segments forms a bubble curtain extending from the multiple bubble segments to the edge of the liquid surface of the localized water body, thereby preventing external floating objects from entering the localized water body.

[0006] Optionally, the depth difference between the deepest and shallowest water levels in each bubble segment is less than or equal to a predetermined value.

[0007] Optionally, the multiple bubble segments belonging to the same group of jet components constitute a bubble conduit.

[0008] Optionally, the multiple bubble segments belonging to a single bubble pipe are isolated from each other.

[0009] Optionally, the multiple bubble segments belonging to a single bubble pipe are interconnected.

[0010] Optionally, each of the bubble segments forms a bubble channel.

[0011] Optionally, adjacent bubble channels form a first plane, and the projections of adjacent bubble channels onto a second plane that is perpendicular to the first plane and parallel to the extension direction of the bubble channels at least partially overlap.

[0012] Optionally, each of the bubble segments is disposed at the bottom of the local water area.

[0013] Optionally, the wide-area water local interception device further includes multiple gas supply pipes, one end of each gas supply pipe being connected to the gas supply unit, and the other end of each gas supply pipe being connected to at least one of the multiple bubble segments, so as to supply the gas to the multiple bubble segments respectively.

[0014] Optionally, the wide-area water local interception device further includes: a plurality of sub-valve, one end of each sub-valve being connected to the gas supply unit and the other end being connected to the bubble section, the sub-valve being configured to regulate the gas parameters of the gas flowing into the bubble section.

[0015] Optionally, the wide-area water local interception device further includes: a main valve, one end of which is connected to the gas supply unit, and the other end of which is connected to a plurality of the sub-valves respectively, the main valve being configured to regulate the gas parameters of the gas flowing out of the gas supply unit.

[0016] Optionally, the wide-area water local interception device further includes: a control unit connected to the sub-valve and / or the main valve, which controls the gas supply section to provide gas parameters, including flow rate and pressure, to the multiple bubble sections by controlling the opening degree of the sub-valve and / or the main valve.

[0017] Optionally, the wide-area water local interception device further includes: multiple detectors, each of which is connected to the bubble section to detect the gas parameters of the gas flowing to the bubble section or the gas parameters of the gas flowing out of the gas supply section; wherein, the control unit controls the opening degree of the sub-valve and / or the main valve based on the detection results of the detectors, thereby controlling the gas parameters of the gas supplied by the gas supply section to the bubble section.

[0018] Optionally, the wide-area water local interception device further includes: a first detection device configured to detect the density and uniformity of the bubble curtain, and the control unit controlling the gas parameters of the gas supplied by the gas supply unit to each bubble segment based on the detection results of the first detection device.

[0019] Optionally, the first detection device includes: a camera device configured to acquire image information of the bubble curtain, and the control unit determines the density and uniformity of the bubble curtain based on the image information.

[0020] Optionally, the first detection device includes: an acoustic device configured to acquire acoustic information of the bubble curtain, and the control unit determines the density and uniformity of the bubble curtain based on the acoustic information.

[0021] Optionally, the wide-area water local interception device further includes: a second detection device disposed within the wide-area water, the second detection device being configured to detect the number of floating objects outside the local water area and within the local water area, and the control unit adjusting the gas parameters of each bubble segment based on the detection results of the second detection device.

[0022] Optionally, the wide-area water local interception device further includes: a third detection device configured to detect the water flow velocity around the bubble segment, and the control unit controlling the gas parameters of the gas supplied by the gas supply unit to the bubble segment based on the detection results of the third detection device.

[0023] Optionally, the gas supply section includes one or more gas supply units, each connected to one or more of the bubble segments.

[0024] Optionally, the gas supply unit further includes a gas source distributor configured to connect the plurality of gas supply units to the plurality of bubble segments respectively.

[0025] Optionally, the wide-area local interception device further includes: a salvage unit disposed at the edge of the bubble curtain, the salvage unit being configured to salvage the floating objects outside the bubble curtain.

[0026] Optionally, the required flow rate to be supplied to the bubble segment is determined based on the standard air supply flow rate at the standard depth of the bubble segment, the length of the bubble segment, and the flow rate ratio of the bubble segment, wherein the flow rate ratio is characterized as the percentage of the flow rate difference between the shallowest and deepest water levels of the bubble segment to the shallow water level flow rate.

[0027] Optionally, the pressure to be supplied to the bubble segment is determined based on the standard gas supply pressure at the standard depth of the bubble segment, the deepest water level of the bubble segment, and the density of the local water area.

[0028] Optionally, the wide-area water local interception device further includes: a plurality of fourth detection devices, respectively disposed at the edge of the bubble curtain, the fourth detection devices being configured to detect water level changes, and the control unit controlling the gas parameters of the gas supplied by the gas supply unit to the bubble section based on the detection results of the fourth detection devices.

[0029] Optionally, when the gas is supplied to the bubble section based on the pressure control gas supply unit: when a decrease in pressure value is detected, followed by a return to the original value, and an increase in flow rate value is detected, which increases to a high point, it is determined that the bubble section is leaking; and when an increase in pressure value is detected, followed by a return to the original value, and a decrease in flow rate value is detected, which decreases to a low point, it is determined that the bubble section is blocked.

[0030] Optionally, when the gas is supplied to the bubble section based on the flow control gas supply unit: when an increase in the flow rate is detected, followed by a return to the original value, and a decrease in the pressure is detected, which then decreases to a low value, it is determined that the bubble section is leaking; and when a decrease in the flow rate is detected, followed by a return to the original value, and a rise in the pressure is detected, which then increases to a high value, it is determined that the bubble section is blocked.

[0031] A second aspect of this utility model provides a water intake system for a power plant, comprising: a local interception device for a wide water area as described above; and a pumping device disposed within a local water area defined within the wide water area, the pumping device being configured to pump water from the wide water area.

[0032] According to the embodiments of this utility model, by setting multiple bubble segments, each bubble segment is connected to the gas supply unit, and the gas supply unit can be controlled to independently supply gas to the multiple bubble segments. That is, the gas can be sprayed by the bubble segments separately to ensure that each bubble segment can spray out a specific flow rate of gas, thereby ensuring that the gas flow rate of the interception device is uniform, making the formed bubble curtain uniform, and thus achieving the purpose of effectively intercepting floating objects. Attached Figure Description

[0033] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0034] Figures 1-4 The diagram illustrates the interception effect of different gas flow rates under different water flow conditions.

[0035] Figure 5 A schematic side view of a wide-area water local interception device according to an embodiment of the present invention is shown.

[0036] Figure 6A schematic side view of a wide-area water local interception device according to another embodiment of the present invention is shown.

[0037] Figure 7 Schematic illustration Figure 6 A side view of the embodiment shown from another angle.

[0038] Figure 8 The illustration shows a side view of a wide-area water local interception device according to another embodiment of the present invention.

[0039] Figure 9 A schematic side view of a wide-area water local interception device according to another embodiment of the present invention is shown.

[0040] Figure 10 A side view of a wide-area water local interception device according to another embodiment of the present invention is shown schematically.

[0041] Figure 11 A side view of a wide-area water local interception device according to a further embodiment of the present invention is shown schematically.

[0042] Figure 12 The schematic diagram illustrates the control principle of a wide-area water local interception device according to an embodiment of the present invention.

[0043] Figure 13 The schematic diagram illustrates the experimental principle of an interception experiment using the wide-area water local interception device according to an embodiment of the present invention.

[0044] Figure 14 The diagram illustrates the changes in pressure and flow rate in the pressure-regulated bubble section when leakage occurs.

[0045] Figure 15 The diagram illustrates the changes in pressure and flow rate in the bubble section when leakage occurs, based on the flow regulation bubble section.

[0046] Figure 16 The diagram illustrates the changes in pressure and flow rate in the pressure-regulated bubble section when blockage occurs.

[0047] Figure 17 The diagram illustrates the changes in pressure and flow rate in the bubble section when blockage occurs, based on the flow regulation bubble section.

[0048] Figure Labels

[0049] 1. Gas supply section; 2. Bubble section; 21. First bubble section; 22. Second bubble section; 23. Third bubble section; 24. Fourth bubble section; 25. Fifth bubble section; 26. Sixth bubble section; 27. Seventh bubble section; 28. Eighth bubble section; 29. ​​Ninth bubble section; 3. Control unit; 4. Wide water area; 41. Local water area; 42. Bottom of water area; 5. Bubble pipe; 6. Gas supply pipe; 61. Main gas supply pipe; 62. Sub-gas supply pipe; 7. Main valve; 8. Sub-valve; 9. Detector; 10. Actuator; 11. Signal line. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0051] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0052] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0053] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0054] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this utility model. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this utility model.

[0055] Figures 1-4 The diagram illustrates the interception effect of different gas flow rates under different water flow conditions.

[0056] The inventors conducted an experimental analysis of the interception effect of different gas flow rates under different water flow conditions in a water tank measuring 3 meters wide, 6 meters long, and 4 meters deep. Specifically, a silica gel float with a density of 1 g / cm³ was placed on the surface of the water tank. A 5-meter-long bubble tube was installed underwater. An air compressor for supplying gas, a pressure gauge for detecting the pressure at the gas jet outlet of the bubble tube, a flow meter for detecting the gas flow rate at the gas jet outlet, and a pressure regulating valve for adjusting the gas jet pressure were also included.

[0057] like Figure 1 As shown, when the water flow velocity is 0.1 m / s, the interception efficiency is higher when the gas flow rate is 12 m³ / h than when the gas flow rates are 24 m³ / h, 36 m³ / h, and 48 m³ / h. Therefore, a higher gas flow rate does not necessarily mean a better interception effect. In fact, a higher gas flow rate consumes more energy.

[0058] like Figure 2 and Figure 3 As shown, when the water flow velocity is 0.3 m / s and 0.4 m / s, the interception efficiency is low when the gas flow rate is less than 36 m³ / h. When the gas flow rate is greater than 36 m³ / h, the interception efficiency tends to stabilize. Therefore, further increasing the gas flow rate will not increase the interception efficiency, but will instead increase energy consumption.

[0059] like Figure 4 As shown, the interception efficiency is highest when the water flow velocity is 0.5 m / s and the gas flow rate is 36 m³ / h. The interception efficiency decreases when the gas flow rate is lower or higher than 36 m³ / h.

[0060] As can be seen from the above, under different water flow velocities, to achieve the best interception efficiency, it is not better to have a higher gas flow rate, but rather to maintain a specific gas flow rate.

[0061] However, in the process of developing this invention, the inventors discovered that due to the relatively long bubble pipe, the pressure inside the pipe near the air supply section is higher than that in the section further away from the air supply section. This results in uneven airflow in the bubble pipe, with higher flow rates near the supply section and lower flow rates further away, leading to weaker interception capabilities in the section furthest from the supply section. Furthermore, since the overall air supply of the bubble pipe is limited, excessive airflow in some sections inevitably leads to insufficient airflow in other sections, resulting in weaker interception capabilities in those sections. Moreover, since the interception effect of the bubble curtain also follows the "bucket effect," if there is a weak point, floating objects may pass through the area with weaker interception capabilities, leading to interception failure. Therefore, this invention provides a wide-area local interception device for floating objects.

[0062] Figure 5 A schematic side view of a wide-area water local interception device according to an embodiment of the present invention is shown. Figure 6 A schematic side view of a wide-area water local interception device according to another embodiment of the present invention is shown. Figure 7 Schematic illustration Figure 6 A side view of the embodiment shown from another angle.

[0063] like Figure 5 As shown, a wide-area water local interception device may include an air supply unit 1 and at least one jet assembly. Each jet assembly includes multiple bubble segments 2. The shape of the bubble segments 2 is not limited. For example, the bubble segments 2 may include, but are not limited to, annular, semi-annular, disc-shaped, rectangular, etc. The air supply unit 1 can be used to supply gas. The air supply unit 1 can be an air compressor, blower, air pump, or other device capable of supplying gas. For example, the air supply unit 1 can be a 200KW screw air compressor. Figure 7 As shown, multiple bubble segments 2 in each jet assembly can be sequentially positioned at the edge of a local water area 41 defined within the wide water area 4. The edge of the local water area 41 can have multiple placement areas. The multiple bubble segments 2 can be sequentially positioned in different placement areas. Each bubble segment 2 can be connected to the air supply unit 1. Each bubble segment 2 can form multiple jet holes that allow gas to be ejected. The wide water area 4 can be a lake, large reservoir, harbor, strait, or ocean, or any other water body with a large surface area. For example, the surface area of ​​the wide water area 4 can be greater than or equal to 0.1 square kilometers. The local water area 41 can be a part of the wide water area 4. The local water area 41 can be positioned according to actual needs. The placement area can be located directly below the edge of the local water area 41, such that the bubble segments 2 are located directly below the edge of the local water area 41.

[0064] By controlling the gas supply unit 1 to supply gas to the multiple bubble segments 2, the gas ejection from each of the multiple bubble segments 2 can be controlled independently. The gas supply unit 1 can be connected to each of the multiple bubble segments 2, allowing the gas supply unit 1 to supply gas to each of the multiple bubble segments 2 independently. The gas ejected from the multiple bubble segments 2 can form a bubble curtain extending from the bubble segments 2 to the edge of the local water area 41, preventing floating objects outside the bubble curtain from entering the local water area 41. Specifically, the gas ejected from the bubble segments 2 can form an upward circulation in the water, lifting underwater floating objects to the surface and pushing them away from the bubble curtain.

[0065] According to the embodiment of this utility model, by setting multiple bubble segments 2, each bubble segment 2 is connected to the air supply unit 1, and the air supply unit 1 can be controlled to independently supply gas to the multiple bubble segments 2, that is, the bubble segments 2 can be controlled to spray gas separately, so as to ensure that each bubble segment 2 can spray out a specific flow rate of gas, thereby ensuring that the air flow rate of the interception device is uniform, making the formed bubble curtain uniform, and thus achieving the purpose of effectively intercepting floating objects.

[0066] In some embodiments, the depth difference between the deepest and shallowest water levels of each bubble segment 2 can be less than or equal to a predetermined value. In implementing this invention, the inventors discovered that due to the slope of the underwater surface, after installing the bubble segment 2, a significant depth difference occurs between some locations of the bubble segment 2. This results in different internal and external pressure differences at the air jets in those locations, thus affecting the uniformity of the outflow rate of the bubble segment 2. This can be addressed by installing each bubble segment 2 within two isobaths at adjacent depths underwater, with the depth difference between the two isobaths being less than or equal to a predetermined value. This ensures that the depth difference between the deepest and shallowest water levels of each bubble segment 2 is less than or equal to the predetermined value, thereby minimizing the difference in outflow rate at each location of each bubble segment 2 and maintaining the uniformity of the outflow rate. In other words, the outflow rate at each location of the bubble segment 2 can reach a specific flow rate. Furthermore, since the water flow velocity varies at different depths, the outflow rate of bubble segments at different depths should be different. The preset value can be set according to the depth of the bottom, so that the water flow velocity at each position of each bubble segment 2 is approximately the same. Furthermore, the length of the bubble segment 2 and the distance between the isobaths can be set according to requirements. For example, multiple bubble segments 2 can be set within two isobaths. The depth difference between the deepest and shallowest water levels in multiple bubble segments 2 should be less than or equal to the preset value. Furthermore, the preset value can be adjusted according to the actual performance of the bubble segment 2. When setting the preset value, it should be ensured that, under normal operating pressure, the percentage (n) of the airflow difference between the shallowest and deepest water levels of bubble segment 2 relative to the airflow at the shallowest water level is less than or equal to the preset flow rate ratio; thus, the smaller the flow rate difference, the smaller the depth difference. The preset flow rate ratio can be set to approximately 30%-50%.

[0067] Furthermore, since the gas supply unit 1 can supply gas to each bubble section 2 separately, and the depth difference between the deepest and shallowest water levels of each bubble section 2 does not affect the uniformity of the outflow volume of the bubble section 2, the outflow volume of each bubble section 2 can be guaranteed, thereby ensuring the uniformity and density of the outflow volume of the interception device. Furthermore, the depth difference between the deepest and shallowest water levels in each installation area can be less than or equal to a predetermined value, thus ensuring that the depth difference between the deepest and shallowest water levels of each bubble section 2 after installation is less than or equal to the predetermined value.

[0068] Furthermore, the length of each bubble segment 2 can be different, that is, the length of the installation area can be different. When the installation area has a slope, the length of the installation area with a larger slope can be shorter than that of the installation area with a smaller slope, so as to ensure that the depth difference between the deepest water level and the shallowest water level of each bubble segment 2 is less than or equal to a predetermined value.

[0069] In some embodiments, each placement area can be located between two adjacent isobaths, i.e., the bubble segment 2 is installed between two adjacent isobaths. The length of the bubble segment 2 can be such that the first end of the bubble segment 2 covers the deepest position of the isobath, and the last end of the bubble segment 2 covers the shallowest position of the isobath. Thus, the smaller the depth difference, the shorter the bubble segment 2, and the higher the uniformity of the exhaust gas of the bubble segment 2.

[0070] Furthermore, before installation, the shape of the bottom of the water 42 can be drawn in the form of isobaths using multibeam sonar carried by the unmanned vessel, and the length of each bubble segment 2 can be designed according to the isobaths to ensure that each bubble segment 2 does not exceed the isobath of a certain depth difference, thereby ensuring that the depth difference between the deepest and shallowest water levels of each bubble segment 2 is less than or equal to a predetermined value.

[0071] For example, such as Figure 5 As shown, when the bottom of the water body 42 has steep slopes on both sides and a gentle slope in the middle, the predetermined value can be set to 0.5 meters, and eight bubble segments 2 can be set. To ensure that the depth difference between the deepest and shallowest water levels in each bubble segment 2 does not exceed 0.5 meters, multiple bubble segments 2 can be set to different lengths. For example, if the slope is steeper on the left side of the bottom of the water body 42, three bubble segments 2 can be set, with lengths of 3.9 meters, 3.9 meters, and 4 meters respectively. If the middle part is gentler, three bubble segments 2 can be set, with lengths of 8.8 meters, 55 meters, and 12 meters respectively. If the slope is steeper on the right side of the bottom of the water body 42, three bubble segments 2 can be set, with lengths of 4.3 meters, 4 meters, and 4.1 meters respectively.

[0072] like Figure 5As shown, in some embodiments, the wide-area water local interception device may further include multiple sub-valves 8. One end of each sub-valve 8 is connected to the air supply unit 1. The other end of each sub-valve 8 is connected to the bubble section 2. The sub-valve 8 is used to regulate the gas parameters of the gas flowing into the bubble section 2. For example, the opening degree of the sub-valve 8 can be adjusted to prevent gas from flowing into the bubble section 2, or to regulate the gas parameters of the gas flowing into the bubble section 2. Further, the sub-valve 8 can be used to control the outflow rate of each bubble section 2, for example, reducing the air supply flow rate to each bubble section 2 in the shallow water area to avoid excessive outflow rate of the bubble section 2 in the shallow water area. Increasing the air supply flow rate to each bubble section 2 in the deep water area to avoid excessive outflow rate of the bubble section 2 in the deep water area.

[0073] In some embodiments, the wide-area water local interception device may further include a main valve 7. One end of the main valve 7 is connected to the gas supply unit 1. The other end of the main valve 7 is connected to a plurality of sub-valves 8. The main valve 7 is configured to regulate the gas parameters of the gas flowing out of the gas supply unit 1. For example, the opening degree of the main valve 7 can be adjusted to prevent gas from flowing out of the gas supply unit 1, or to regulate the gas parameters of the gas flowing out of the gas supply unit 1. Specifically, the opening degrees of the main valve 7 and the sub-valves 8 can be set as needed.

[0074] like Figures 6-7 As shown, in some embodiments, the wide-area water local interception device may further include a control unit 3. The control unit 3 can be connected to the main valve 7 and / or sub-valve 8. By controlling the opening degree of the main valve 7 and / or sub-valve 8, the gas supply unit 1 can control the gas parameters supplied to the multiple bubble segments 2 by the gas supply unit 1. Further, the opening degree of the sub-valve 8 can be pre-adjusted, so that the control unit 3 can be connected only to the main valve 7 without connecting to the sub-valve 8. That is, only the control unit 3 needs to adjust the opening degree of the main valve 7 to control the gas parameters supplied to the multiple bubble segments 2 by the gas supply unit 1. The opening degrees of the multiple sub-valve 8 can be set according to the depth of their corresponding bubble segments 2. Correspondingly, the opening degree of the main valve 7 can be pre-adjusted, so that the control unit 3 can be connected only to the sub-valve 8 without connecting to the main valve 7. That is, only the control unit 3 needs to adjust the opening degree of the sub-valve 8 to control the gas parameters supplied to the multiple bubble segments 2 by the gas supply unit 1. The control unit 3 can also be connected to the main valve 7 and the sub-valve 8 at the same time. That is, the control unit 3 can adjust the opening of the main valve 7 and the sub-valve 8 to control the gas parameters of the gas supply unit 1 to supply gas to the multi-stage bubble section 2 respectively.

[0075] Furthermore, the main valve 7 and the sub-valve 8 can be devices that simultaneously possess flow and pressure monitoring and flow and pressure control functions, such as a mass flow controller that integrates both flow monitoring and flow control functions. The control unit 3 can be connected to the main valve 7 and / or the sub-valve 8 via signal line 11. The control unit 3 can set the gas flow rate and gas pressure values ​​for each bubble segment 2, and send instruction information containing the gas flow rate and gas pressure values ​​to the main valve 7 and / or the sub-valve 8 in each loop via signal line 11. The main valve 7 and / or the sub-valve 8 can output an equal amount of gas to each bubble segment 2 according to the instruction information. At the same time, the main valve 7 and / or the sub-valve 8 can feed back the real-time detected flow and pressure signals to the control unit 3 via signal line 11.

[0076] like Figures 6-7 As shown, in some embodiments, where the main valve 7 and sub-valve 8 do not have flow and pressure monitoring functions, the wide-area water local interception device may also include multiple detectors 9. Each detector 9 is connected to the bubble section 2 or the gas supply section 1 to detect the gas parameters of the gas flowing to the bubble section 2 or the gas parameters of the gas flowing out of the gas supply section 1.

[0077] Based on the detection results of the detector 9, the control unit 3 can control the opening degree of the main valve 7 and / or the sub-valve 8, thereby controlling the gas parameters of the gas supplied from the gas supply unit 1 to the bubble section 2. The gas parameters may include pressure and flow rate.

[0078] like Figures 6-7 As shown, there can be 8 bubble segments 2, each bubble segment 2 can be connected to a detector 9, and the air supply unit 1 can be connected to a detector 9.

[0079] like Figures 6-7 As shown, in some embodiments, multiple bubble segments 2 can form a bubble pipe 5, meaning that only one bubble pipe 5 needs to be installed during installation.

[0080] In some embodiments, multiple bubble segments 2 belonging to a single bubble pipe 5 can be isolated from each other. The control unit 3 can control the gas supply unit 1 to supply gas to only a specific bubble segment 2. Furthermore, the control unit 3 can control the gas supply unit 1 to supply gas pressure and flow rate to each bubble segment 2 separately.

[0081] In some embodiments, multiple bubble segments 2 belonging to a single bubble pipe 5 can be interconnected. After the control unit 3 controls the gas supply unit 1 to supply gas to a specific bubble segment 2, the gas in that bubble segment 2 can flow to the adjacent bubble segment 2 based on the pressure difference between it and the adjacent bubble segment 2, thereby further improving the pressure uniformity between adjacent bubble segments 2 and further improving the uniformity of the bubble curtain.

[0082] Figure 8 The illustration shows a side view of a wide-area water local interception device according to another embodiment of the present invention. Figure 9 A schematic side view of a wide-area water local interception device according to another embodiment of the present invention is shown. Figure 10 A side view of a wide-area water local interception device according to another embodiment of the present invention is shown schematically.

[0083] like Figures 6-10 As shown, in some embodiments, each bubble segment 2 can be formed as a bubble channel 5. If one or more bubble segments 2 are damaged, only some bubble segments 2 can be replaced, thereby reducing maintenance costs.

[0084] In some embodiments, adjacent bubble channels 5 may form a first plane (e.g. Figure 10 The first and second bubble pipe segments 5, from top to bottom, can form a first plane. The projections of adjacent bubble pipe segments 5 onto a second plane (i.e., bubble pipe segments 5 are parallel to the second plane) are at least partially overlapping. A plane perpendicular to the bubble pipe segments 5 can be defined as a third plane, i.e., the second plane is perpendicular to both the first and third planes. By ensuring that the projections of adjacent bubble pipe segments 5 on the second plane are at least partially overlapping, adjacent bubble segments 2 can be staggered, avoiding gaps in the bubble curtain caused by separate installation of the bubble pipes, thus ensuring the continuity of the bubble curtain. Furthermore, when adjacent bubble pipe segments 5 are staggered, the distance between adjacent bubble pipe segments 5 can be less than or equal to 5 cm to facilitate binding adjacent bubble pipe segments 5 together, thereby further ensuring the continuity of the bubble curtain.

[0085] like Figure 6 , Figures 8-9 As shown, in some embodiments, each bubble segment 2 can be disposed at the bottom of the local water area 41. For example, the bubble segment 2 can be disposed at the bottom of the ocean or river, that is, the bubble curtain can extend from the bottom of the local water area 41 to the surface of the liquid, thereby forming a bubble curtain with a large area to prevent floating objects at various depths of the water area from entering the local water area 41. Furthermore, since the bubble segment 2 is disposed at the bottom of the local water area 41, it will not affect the passage of ships in the water.

[0086] Figure 11 A side view of a wide-area water local interception device according to a further embodiment of the present invention is shown schematically.

[0087] like Figures 5-11 As shown, in some embodiments, the bubble segments 2 can be linearly distributed, such as... Figures 5-10 The straight lines shown and Figure 11 The ring shown can be set according to the shape of the local water area 41 and the surrounding environment.

[0088] In some embodiments, the wide-area water local interception device may further include multiple air supply pipes 6. One end of each air supply pipe 6 may be connected to the air supply unit 1. The other end of each air supply pipe 6 may be connected to one of the multiple bubble segments 2, so that each air supply pipe 6 supplies gas to one bubble segment, making each bubble segment 2 and the air supply unit 1 form a separate air supply circuit, so that the air supply unit 1 supplies gas to each bubble segment 2 respectively. Further, the other end of each air supply pipe 6 may be connected to at least one of the multiple bubble segments 2 to supply gas to the multiple bubble segments respectively. For example, when the bubble segments 2 are interconnected, each air supply pipe 6 may be connected to two adjacent bubble segments 2, so that one air supply pipe 6 can supply gas to two bubble segments 2 simultaneously. Figure 9 As shown, further, the multiple gas supply pipelines may include a main gas supply pipeline 61 and multiple sub-gas supply pipelines 62. The main gas supply pipeline 61 can be connected to the gas supply unit 1, and one end of each sub-gas supply pipeline 62 can be connected to the gas supply unit 1 through the main gas supply pipeline 61, while the other end of the sub-gas supply pipeline 62 can be connected to the bubble section 2, thereby reducing the total length of the gas supply pipelines and lowering costs. The sub-gas supply pipelines 62 can be channels formed by devices such as valves.

[0089] Furthermore, multiple sets of jetting components can be installed at the edge of the local water area to increase the thickness of the bubble curtain. The air supply pipe 6 can simultaneously supply air to the bubble section 2 of multiple sets of jetting components.

[0090] like Figures 8-9 As shown, detector 9 can be installed at the upper part of the water area or at the bottom 42 of the water area. Installing detector 9 at the bottom 42 of the water area can reduce the number of pipes, pipe volume, and installation difficulty, and avoid affecting the operation of vessels in the upper part of the water area. Furthermore, sub-valve 8 can also be installed at the bottom 42 of the water area.

[0091] Figure 12 The schematic diagram illustrates the control principle of a wide-area water local interception device according to an embodiment of the present invention.

[0092] In some embodiments, detector 9 may include at least one of a mass flow meter and a pressure sensor. For example... Figure 12As shown, the wide-area water local interception device may also include an actuator 10. The control unit 3 can use the actuator 10 to control the flow and / or pressure of the main valve 7 and / or sub-valve 8. A mass flow meter and / or pressure sensor can be connected to the bubble section 2 or the air supply unit 1 to detect the flow rate and / or pressure of the gas flowing to the bubble section 2, or to detect the flow rate and / or pressure of the gas flowing out of the air supply unit 1. Based on the detection results of the detector 9, the control unit 3 can control the opening degree of the main valve 7 and / or sub-valve 8, thereby controlling the flow rate and / or pressure of the gas supplied by the air supply unit 1 to each bubble section 2, to ensure that the gas flow rate per unit length of each bubble section 2 is the same. Further, as... Figure 12 As shown, actuator 10 is connected between control unit 3 and main valve 7 and / or between control unit 3 and sub-valve 8. Actuator 10 can be an electric actuator, pneumatic actuator, or wire-guided torque actuator. Control unit 3 can control the opening degree of main valve 7 and / or sub-valve 8 through actuator 10.

[0093] Furthermore, such as Figure 12 As shown, the control unit 3 can be connected to the detector 9 and the actuator 10 via signal line 11. The control unit 3 can set the gas pressure and gas flow rate for each bubble segment 2, and send the gas pressure and gas flow rate as opening / closing angle signals to the actuators 10 of each loop via signal line 11. The actuators 10 can control the corresponding main valve 7 and / or sub-valve 8 to rotate to the specified opening / closing angle to supply gas to the corresponding bubble segment 2. At the same time, the detector 9 can feed back the real-time detected flow rate and pressure signals to the control unit 3 via signal line 11. The control unit 3 sends adjustment signals to the actuators 10 until the actual gas pressure and gas flow rate are consistent with the set gas pressure and gas flow rates.

[0094] Furthermore, when the bottom 42 of the water surface is relatively flat, if the air flow rate per meter of bubble segment 2 is Q (L / min), and the length of this bubble segment 2 is L meters, then the total air flow rate of this bubble segment 2 can be set to Q*L (L / min) in the actuator 10. When the bottom 42 of the water surface is relatively steep, especially for steep slopes on both sides, it is necessary to calculate the projected length L' of this bubble segment 2 on the liquid surface, and the air flow rate of this bubble segment 2 can be set to Q*L' (L / min). Furthermore, the air flow rate of each bubble segment 2 can be fine-tuned according to the interception performance of the bubble curtain until a better interception effect is achieved. Q and L can be set according to requirements. For example, Q can be 0~0.6m. 3 / min. L can be 2m, 3m, 5m, 8m, etc.

[0095] Furthermore, by setting detector 9, the gas pressure and gas flow rate of each bubble segment 2 can be detected, and control unit 3 can determine the pressure curve changes of each bubble segment 2, thereby allowing real-time tracking of the actual working status of each bubble segment 2. In case of blockage or leakage in bubble segment 2, an alarm can be triggered for replacement. For example, if a sudden increase in gas flow rate in bubble segment 2 is detected, exceeding a first threshold, a leak in bubble segment 2 can be determined. If a sudden increase in pressure value in bubble segment 2 is detected, exceeding a second threshold, a blockage in bubble segment 2 can be determined. The first and second thresholds can be set according to requirements.

[0096] Furthermore, by setting multiple detectors 9, the pressure and flow rate of the gas supplied by the air supply unit 1 to each bubble section 2 can be precisely adjusted. This allows the interception device to better adapt to changes in the surrounding environment. For example, during long-term continuous operation of the interception device, due to the influence of tides, the water level difference in some parts of the water area can reach more than 10 meters, meaning the water level change can reach more than 10 meters. However, due to different water depth changes, pressure changes of 0.1~1 Bar will occur on the outside of the jet nozzle. If no adjustment is made, the air flow rate will decrease when the water level is high and increase when the water level is low, thus affecting the stability and uniformity of the bubble curtain. This results in ineffective interception of floating objects in areas with low air flow rates, and energy waste in areas with excessive air flow rates. By setting multiple detectors 9, the actual air flow rate can be detected in real time, thereby allowing for precise adjustment of the air flow rate in real time. This prevents the interception device from being affected by tides, ensuring the stability of the bubble curtain and effectively saving energy.

[0097] In some embodiments, the wide-area water local interception device may further include a first detection device. The first detection device can be used to detect the density and uniformity of the bubble curtain. Based on the detection results of the first detection device, the control unit 3 can control the gas supply unit 1 to supply gas parameters to each bubble segment 2 to ensure the density and uniformity of the bubble curtain.

[0098] In some embodiments, the first detection device may include a camera device. The camera device can be used to acquire image information of the bubble curtain. For example, the camera device can be a camera or a video camera, thereby acquiring image information of the bubble curtain. Preferably, the camera device can be a video camera, capable of tracking dynamic changes in the bubble curtain. The control unit 3 can determine the density and uniformity of the bubble curtain based on the image information.

[0099] In some embodiments, the first detection device may include an acoustic device. The acoustic device can be used to acquire acoustic information of the bubble curtain. The acoustic device may be an ultrasonic probe. The control unit 3 can determine the density and uniformity of the bubble curtain based on the acoustic information.

[0100] In some embodiments, the wide-area local interception device may further include a second detection device. The second detection device may be positioned within the wide-area water region. The second detection device can be used to detect the number of floating objects both outside and within the local water region. The control unit 3 can adjust the gas parameters of each bubble segment based on the detection results of the second detection device to ensure that the wide-area local interception device has a better interception effect.

[0101] Furthermore, multiple second detection devices can be provided. These devices can be positioned on the outer side of the local water area and the bubble curtain, away from the local water area; that is, some second detection devices can be located on the outer side of the local water area, while others can be located inside. Each second detection device can be used to detect the number of floating objects on the outer side or within the local water area. The second detection devices can include the aforementioned camera and acoustic wave devices, meaning that the camera and acoustic wave devices can achieve the purpose of detecting the number of floating objects on the outer side or within the local water area.

[0102] In some embodiments, the wide-area local interception device may further include a third detection device. The third detection device can be used to detect the water flow velocity around the bubble section 2. The control unit 3 can control the gas parameters of the gas supplied by the gas supply unit 1 to the bubble section 2 based on the detection results of the third detection device.

[0103] In some embodiments, the gas parameters include pressure. The pressure required to be supplied to bubble section 2 can be determined based on the standard gas supply pressure at the standard depth of bubble section 2, the deepest water level of bubble section 2, and the density of the local water area.

[0104] According to an embodiment of this utility model, the pressure required to be supplied to the bubble section 2 It can be represented by the following expression (1).

[0105] (1).

[0106] in, This refers to the standard gas supply pressure at the standard depth of bubble section 2. The density of the local water area under operating conditions. It is the acceleration due to gravity. For standard depth, The deepest water level in bubble section 2 is denoted by k, which is a correction coefficient. The k coefficient is related to the gas compression in bubble section 2, ambient temperature, and deformation under different pressures at the jet orifice. The k coefficient can be adjusted according to the actual situation. and A negative value indicates underwater.

[0107] According to an embodiment of this utility model, pressure It can also be represented by the following expression (2).

[0108] (2).

[0109] Where c is the correction amount, which can be negative. The correction amount c is related to the gas compression in bubble section 2, ambient temperature, and deformation under different pressures at the jet orifice. The correction amount c is adjusted according to the actual situation.

[0110] In some embodiments, considering that tidal changes can cause water level changes, the wide-area local interception device may further include multiple fourth detection devices. These multiple fourth detection devices may be respectively positioned at the edges of the bubble curtain to detect water level changes. The control unit 3 may control the gas parameters of the gas supplied by the gas supply unit 1 to the bubble section 2 based on the detection results of the fourth detection devices.

[0111] According to an embodiment of this utility model, in situations where water level changes in a localized water area due to tidal forces, pressure... It can be represented by the following expression (3).

[0112] (3).

[0113] in, This represents the change in water level.

[0114] According to an embodiment of this utility model, in situations where water level changes in a localized water area due to tidal forces, pressure... It can also be represented by the following expression (4).

[0115] (4).

[0116] In some embodiments, the gas parameters include flow rate. The required flow rate to be supplied to bubble section 2 is determined based on the standard gas supply flow rate at the standard depth of bubble section 2, the length of bubble section 2, and the flow rate ratio of bubble section 2.

[0117] According to an embodiment of the present invention, the flow ratio is characterized as the percentage of the flow difference between the shallowest and deepest water levels in bubble section 2 relative to the flow rate at the shallow water level.

[0118] According to an embodiment of this utility model, the flow rate required to be supplied to bubble section 2 It can be represented by the following expression (5).

[0119] (5).

[0120] in, This represents the standard gas supply flow rate at the standard depth of bubble section 2. The flow rate ratio of bubble section 2, This is a correction factor, which can be adjusted according to the actual situation. .

[0121] According to an embodiment of this utility model, the flow rate It can also be represented by the following expression (6).

[0122] (6).

[0123] in, This is a correction amount, which can be negative. The deformation is related to the gas compression within bubble section 2, ambient temperature, and different pressures at the jet orifice. The correction amount should be adjusted according to the actual situation. .

[0124] According to an embodiment of this utility model, when based on the flow rate regulating bubble section 2, the flow rate is not affected by tidal forces. It can be represented by the above expressions (5) and (6).

[0125] In some embodiments, the gas supply unit 1 may include one or more gas supply units. Multiple gas supply units can be connected to the bubble sections 2 one-to-one, one-to-many, or many-to-many; that is, one gas supply unit can be connected to one bubble section 2, one gas supply unit can supply gas to multiple bubble sections 2, or multiple gas supply units can supply gas to multiple bubble sections 2. By using multiple gas supply units to supply gas to multiple bubble sections 2, normal gas supply can be ensured even when one or more gas supply units are idle or under maintenance.

[0126] In some embodiments, the gas supply unit 1 may include a gas source distributor. The gas source distributor can be used to connect multiple gas supply units to multiple bubble segments 2 respectively. Multiple gas supply units can be connected to multiple bubble segments 2 through the gas source distributor to achieve the purpose of multiple gas supply units working alternately. For example, in the case of 8 bubble segments 2, the gas source distributor can be a 1-to-8 distributor. One inlet and eight outlet positions can be connected to detectors 9 and actuators 10 respectively. The one inlet can be connected to the gas supply unit 1 through detectors 9 and actuators 10. The eight outlets can be connected to eight bubble segments 2 through eight detectors 9 and eight actuators 10 respectively, with each outlet connected to one bubble segment 2. Detectors 9 and actuators 10 can be connected to the control unit 3 via IOlink communication lines. Further, the control unit 3 may include an IOlink master station, a programmable logic controller (PLC), and a remote computer. The IOlink master station can be connected to the PLC via a bus. The remote computer can be remotely connected to the PLC through a network port on the PLC.

[0127] In some embodiments, the wide-area local interception device may further include a retrieval section. The retrieval section may be located at the edge of the bubble curtain. The retrieval section can be used to retrieve floating objects outside the bubble curtain. Furthermore, due to the force of the water flow, floating objects tend to accumulate downstream of the bubble curtain; therefore, the retrieval section may be located downstream of the bubble curtain to prevent floating objects from entering the bubble curtain due to excessive amounts of floating objects.

[0128] Figure 13 The schematic diagram illustrates the principle of an interception simulation experiment using the wide-area water local interception device according to an embodiment of the present invention.

[0129] like Figure 13 As shown, the inventor conducted a simulation experiment using the wide-area water local interception device of this utility model embodiment. The air supply unit 1 is a 150KW, 380V, 50Hz screw air compressor. The interception device is set in an open channel with a width of 77 meters and a depth of 13 meters. There is a significant depth difference at the bottom of the open channel. Starting from the horizontal plane of the open channel, isobaths are marked at 3-meter depths (e.g.,...). Figure 13 (As shown by the dashed lines). Bubble segments 2 are set up with the principle that the depth difference between the highest and lowest points of each bubble segment 2 should not exceed 3 meters. For example... Figure 13 As shown, nine bubble segments 2 of varying lengths are arranged in an alternating pattern to prevent gaps in the bubble curtain caused by separate installation of bubble pipes, thus ensuring the continuity of the bubble curtain. Figure 13 As shown, the beginning of the second bubble segment 2 is located directly above the end of the first bubble segment 2. Furthermore, the beginning of the second bubble segment 2 can also be located directly below, to the left or to the right of the end of the first bubble segment 2.

[0130] Specifically, the first bubble segment 21 extends slopingly from the left side of the open channel to a position approximately 3 meters underwater. The length of the first bubble segment 21 is 3.9 meters. The second bubble segment 22 extends slopingly from the left side of the open channel to a position approximately 6 meters underwater, also approximately 3 meters underwater, and is 4 meters long. The third bubble segment 23 extends slopingly from the left side of the open channel to a position approximately 9 meters underwater, also approximately 6 meters underwater, and is 4 meters long. The fourth bubble segment 24 extends slopingly from the left side of the open channel to a position near the bottom of the open channel, and is 8.8 meters long. The fifth bubble segment 25 extends along the shape of the bottom of the open channel, near the end of the fourth bubble segment 24, and is 45 meters long. The sixth bubble segment 26 extends slopingly from the right side of the open channel to a position approximately 12 meters underwater, also approximately 9 meters underwater, and is 11.4 meters long. The seventh bubble section, 27, extends slopingly from the right side of the open channel at approximately 6 meters underwater to approximately 9 meters underwater. The length of the seventh bubble section, 27, is 4.3 meters. The eighth bubble section, 28, extends slopingly from the right side of the open channel at approximately 3 meters underwater to approximately 6 meters underwater. The length of the eighth bubble section, 28, is 4.07 meters. The ninth bubble section, 29, extends slopingly from the right side of the open channel's horizontal plane to approximately 3 meters underwater. The length of the ninth bubble section, 29, is 4.1 meters.

[0131] Furthermore, nine gas supply pipes are installed. Figure 13 (Not shown) and respectively connected to the deep water end of the 9-segment bubble section 2 (e.g. Figure 13 (The right end of bubble section 2 shown) is connected. The gas supply pressure of each gas supply pipe section can be designed as: Gas supply pressure = Pipe pressure loss of gas supply pipe + Exhaust opening pressure of bubble section 2 + Water depth pressure + Error pressure. The exhaust opening pressure, water depth pressure, and error pressure of the bubble section can be set according to actual conditions and needs. The error pressure can be 0.1 bar. The pipe pressure loss can be calculated based on the length of each bubble section 2 and the estimated gas flow rate. The water depth pressure of each bubble section 2 can be the deepest depth of bubble section 2 multiplied by 0.1 bar per meter.

[0132] Table 1 below shows the air supply pressure of the bubble section.

[0133] Table 1

[0134]

[0135] Where X is the tidal parameter. Since tides cause changes in the depth of the entire bubble segment, to ensure consistent gas flow at different depths, the depth of the bubble segment's end is measured every hour using sonar. X is then set based on the measured depth. X = Change in depth at the end of bubble segment 2 × 0.1 bar. For example, if the initial depth at the end of the third bubble segment 23 is 9 meters, and the depth at the end of the third bubble segment 23 after high tide is 11 meters, the change is 2, and X is 0.2 bar. The gas supply pressure of the third bubble segment 23 is 1.81 bar.

[0136] Furthermore, the interception device is also equipped with an alarm device. The alarm device is connected to each of the nine bubble segments 2. The alarm device includes a leakage detection module and a blockage detection module.

[0137] Figure 14 The diagram illustrates the changes in pressure and flow rate in the pressure-regulated bubble section when leakage occurs.

[0138] like Figure 14 As shown in the embodiment of this utility model, when adjusting the pressure of the bubble section 2, a constant pressure is provided to the bubble section 2. In the following scenario, if a rapid decrease in pressure is detected, followed by a correction to the original value and stabilization, and simultaneously a sudden increase in flow rate is detected during this process, reaching a high point, the leak detection module can determine that bubble segment 2 is leaking. For example, if the gas flow rate in bubble segment 2 increases by 30%, the leak detection module can determine that bubble segment 2 is leaking.

[0139] Figure 15 The diagram illustrates the changes in pressure and flow rate in the bubble section when leakage occurs, based on the flow regulation bubble section.

[0140] like Figure 15 As shown in the embodiment of this utility model, when adjusting the flow rate of bubble section 2, a constant flow rate is provided to bubble section 2. In the following scenario, if the flow rate suddenly increases at a certain time, then recovers to its original value after correction, and simultaneously the pressure continuously decreases and then reaches a new lower value, the leakage detection module can determine that bubble segment 2 is leaking. For example, if the pressure in bubble segment 2 drops to 30% or more, the leakage detection module can determine that bubble segment 2 is leaking.

[0141] Figure 16 The diagram illustrates the changes in pressure and flow rate in the pressure-regulated bubble section when blockage occurs.

[0142] like Figure 16 As shown in the embodiment of this utility model, when adjusting the pressure of the bubble section 2, a constant pressure is provided to the bubble section 2. In this case, when a sudden increase in pressure is detected, it is then corrected to the original value. During this process, a decrease in flow rate is detected. Once the flow rate decreases to a lower value, the blockage determination module can determine that bubble segment 2 is blocked.

[0143] Figure 17 The diagram illustrates the changes in pressure and flow rate in the bubble section when blockage occurs, based on the flow regulation bubble section.

[0144] like Figure 17 As shown in the embodiment of this utility model, when adjusting the flow rate of bubble section 2, a constant flow rate is provided to bubble section 2. In the case where the flow rate suddenly decreases at a certain time and then recovers to its original value after correction, while the pressure continues to rise and stabilizes after exceeding a certain value above the original value, the blockage determination module can determine that bubble segment 2 is blocked.

[0145] Furthermore, multiple simulated jellyfish were placed in the open channel, and an interception experiment was conducted on the simulated jellyfish using the above setup. During the experiment, each bubble segment 2 could spray gas relatively stably, and the gas flow rate of the nine bubble segments 2 was uniform, forming a relatively uniform bubble curtain, which effectively intercepted the simulated jellyfish.

[0146] This invention also provides a water intake system for a power plant. The water intake system may include the aforementioned wide-area local interception device and pumping device. The wide-area local interception device can be used to keep a local area of ​​the wide-area water clean. The pumping device can be installed below a defined local area 41 within the wide-area water 4. The pumping device can be used to extract water below the wide-area water 4 for power generation. Specifically, the pumping device can be used to cool the power plant's condenser.

[0147] The embodiments of the present invention have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the present invention, and all such substitutions and modifications should fall within the scope of the present invention.

Claims

1. A wide-area water local interception device, characterized in that, include: The gas supply unit is configured to supply gas. At least one jet assembly, each group of jet assemblies includes multiple bubble segments, the multiple bubble segments in each group of jet assemblies are sequentially disposed at the edge of a local water area defined within the wide water area, each bubble segment is connected to the air supply unit, and each bubble segment forms multiple jet holes that allow the gas to be ejected; The gas supply section provides gas to multiple bubble segments, and the gas ejected from the multiple bubble segments forms a bubble curtain that extends from the multiple bubble segments to the edge of the liquid surface of the local water area, so as to prevent external floating objects from entering the local water area.

2. The wide-area water local interception device according to claim 1, characterized in that, The depth difference between the deepest and shallowest water levels in each bubble segment is less than or equal to a predetermined value.

3. The wide-area water local interception device according to claim 1, characterized in that, The multiple bubble segments belonging to the same group of jet components constitute a bubble channel.

4. The wide-area water local interception device according to claim 3, characterized in that, The multiple bubble segments belonging to a single bubble pipe are isolated from each other.

5. The wide-area water local interception device according to claim 3, characterized in that, The multiple bubble segments belonging to a single bubble pipe are interconnected.

6. The wide-area water local interception device according to claim 1, characterized in that, Each of the bubble segments forms a bubble channel.

7. The wide-area water local interception device according to claim 6, characterized in that, The adjacent bubble channels form a first plane, and the projections of the adjacent bubble channels onto a second plane that is perpendicular to the first plane and parallel to the extension direction of the bubble channels at least partially overlap.

8. The wide-area water local interception device according to any one of claims 1-7, characterized in that, Each of the bubble segments is located at the bottom of the local water area.

9. The wide-area water local interception device according to any one of claims 1-7, characterized in that, It also includes multiple gas supply pipes, one end of each gas supply pipe being connected to the gas supply unit, and the other end of each gas supply pipe being connected to at least one of the multiple bubble segments, so as to supply the gas to the multiple bubble segments respectively.

10. The wide-area water local interception device according to any one of claims 1-7, characterized in that, Also includes: Multiple sub-valves, each sub-valve having one end connected to the gas supply unit and the other end connected to the bubble section, the sub-valve being configured to regulate the gas parameters of the gas flowing into the bubble section.

11. The wide-area water local interception device according to claim 10, characterized in that, Also includes: A main valve is connected at one end to the gas supply unit, and at the other end to a plurality of the sub-valvees. The main valve is configured to regulate the gas parameters of the gas flowing out of the gas supply unit.

12. The wide-area water local interception device according to claim 10, characterized in that, Also includes: The control unit, connected to the sub-valve and / or the main valve, controls the gas supply section to provide gas parameters, including flow rate and pressure, to the multiple bubble sections by controlling the opening degree of the sub-valve and / or the main valve.

13. The wide-area water local interception device according to claim 12, characterized in that, Also includes: Multiple detectors, each connected to the bubble section, are used to detect gas parameters of gas flowing into the bubble section or gas parameters of gas flowing out of the gas supply section. The control unit controls the opening degree of the sub-valve and / or the main valve based on the detection result of the detector, thereby controlling the gas parameters of the gas supplied by the gas supply unit to the bubble section.

14. The wide-area water local interception device according to claim 12, characterized in that, Also includes: A first detection device is configured to detect the density and uniformity of the bubble curtain, and the control unit controls the gas parameters of the gas supplied by the gas supply unit to each bubble segment based on the detection results of the first detection device.

15. The wide-area water local interception device according to claim 14, characterized in that, The first detection device includes: a camera device configured to acquire image information of the bubble curtain, and the control unit determining the density and uniformity of the bubble curtain based on the image information.

16. The wide-area water local interception device according to claim 14, characterized in that, The first detection device includes an acoustic device configured to acquire acoustic information of the bubble curtain, and the control unit determines the density and uniformity of the bubble curtain based on the acoustic information.

17. The wide-area water local interception device according to claim 12, characterized in that, Also includes: A second detection device is installed in the wide water area. The second detection device is configured to detect the number of floating objects outside the local water area and within the local water area. The control unit adjusts the gas parameters of each bubble segment based on the detection results of the second detection device.

18. The wide-area water local interception device according to claim 12, characterized in that, Also includes: The third detection device is configured to detect the water flow velocity around the bubble segment, and the control unit controls the gas parameters of the gas supplied by the gas supply unit to the bubble segment based on the detection results of the third detection device.

19. The wide-area water local interception device according to any one of claims 1-7, characterized in that, The gas supply unit includes: One or more gas supply units are connected to the multiple bubble segments respectively.

20. The wide-area water local interception device according to claim 19, characterized in that, The gas supply unit also includes: The gas supply distributor is configured to connect the plurality of gas supply units to the plurality of bubble segments respectively.

21. The wide-area water local interception device according to any one of claims 1-7, characterized in that, Also includes: A retrieval unit is disposed at the edge of the bubble curtain, and the retrieval unit is configured to retrieve the floating objects outside the bubble curtain.

22. The wide-area water local interception device according to claim 12, characterized in that, Based on the standard air supply flow rate at the standard depth of the bubble segment, the length of the bubble segment, and the flow rate ratio of the bubble segment, the flow rate to be supplied to the bubble segment is determined, wherein the flow rate ratio is characterized as the percentage of the flow rate difference between the shallowest and deepest water levels of the bubble segment to the shallow water level flow rate.

23. The wide-area water local interception device according to claim 12, characterized in that, Based on the standard air supply pressure at the standard depth of the bubble segment, the deepest water level of the bubble segment, and the density of the local water area, the pressure that needs to be supplied to the bubble segment is determined.

24. The wide-area water local interception device according to claim 12, characterized in that, Also includes: Multiple fourth detection devices are respectively installed at the edge of the bubble curtain. The fourth detection devices are configured to detect changes in water level. Based on the detection results of the fourth detection devices, the control unit controls the gas parameters of the gas supplied by the gas supply unit to the bubble section.

25. The wide-area water local interception device according to claim 12, characterized in that, When the gas is supplied to the bubble section based on pressure control: When a decrease in pressure is detected, followed by a return to the original value, and an increase in flow rate is detected, reaching a high point, it is determined that the bubble segment is leaking. as well as When an increase in pressure is detected, followed by a return to the original value, and a decrease in flow rate is detected, which then drops to a low value, it is determined that the bubble segment is blocked.

26. The wide-area water local interception device according to claim 12, characterized in that, When the gas is supplied to the bubble section based on flow control: When an increase in flow rate is detected, followed by a return to the original value, and a decrease in pressure is detected, which then drops to a low point, it is determined that the bubble segment is leaking. as well as When a decrease in flow rate is detected, followed by a return to the original value, and a rise in pressure is detected, reaching a high point, it is determined that the bubble segment is blocked.

27. A water intake system for a power plant, characterized in that, include: The wide-area water local interception device as described in any one of claims 1 to 23 above; as well as A pumping device is installed within a defined local area of ​​the wide water area, and the pumping device is configured to pump water from the wide water area.

Images