A boundary layer scoop

Abstract

The application relates to the technical field of cooling water collection, in particular to an attached layer water collector which comprises a cylinder wall, a blade, an attached layer and a bottom plate; the cylinder wall and the bottom plate are integrated to form the main structure of a water collection unit, the blade is arranged in the cylinder wall and is used for guiding airflow and enhancing water drop collision probability; the attached layer is arranged on the surface of the cylinder wall and is used for capturing tiny liquid drops moving with airflow and forming liquid films on the surface of the attached layer to flow downward; and the bottom plate is used for supporting the whole structure and guiding and collecting liquid.

Description

Technical Field

[0001] This application relates to the field of cooling water collection technology, and in particular to a boundary layer water collector. Background Technology

[0002] The rapid development of industry and population growth in my country have led to a sharp increase in urban domestic and industrial water consumption. Thermal power plants consume a significant amount of water, with cooling towers accounting for a substantial proportion. Wind loss from cooling towers manifests as small water droplets being carried out of the tower by airflow, entering the atmosphere or falling to the surrounding ground. Furthermore, water droplets discharged into the environment by airflow can impact the surrounding environment. In winter, ice may form around the tower, affecting traffic. Given that cooling water primarily serves a cooling function in the power plant's circulation system and its quality remains unchanged, collecting the lost water through appropriate measures would significantly achieve water conservation goals. Currently, most cooling towers are equipped with water collectors to conserve water and mitigate adverse environmental impacts.

[0003] Currently, the main product for water collectors in cooling towers is the corrugated plate type, also known as a water separator or water collector. The water collector is an important device for water conservation and environmental protection within cooling towers, installed above the water distribution tray. When the rising airflow carrying water droplets passes through the water collector, the droplets collide with the collector wall and are prevented from rising further, thus being collected. Air and any uncaptured tiny droplets continue to rise and are discharged into the external environment. By removing a large number of fine water droplets and other drifting particles carried in the hot, humid air inside the cooling tower, the water collector not only conserves water but also prevents pollution of the surrounding environment; its performance determines the water collection efficiency.

[0004] Current field application results show that the new vortex water collector has a higher water collection rate and a lower suspended solids content in the recycled water compared to the traditional corrugated plate water collector. This verifies that the new vortex water collector has a good water collection effect on tiny droplets and can effectively improve the quality of circulating water.

[0005] However, due to factors such as the structure of the cooling tower and the air intake method, the wind speed varies at different locations within the water collection layer of the cooling tower, resulting in a wave-like distribution of wind speed on the same cross-section. This uneven wind speed distribution causes droplets to travel at different speeds, and since the water collectors inside the tower are usually of the same type, droplets in areas with higher wind speeds are more likely to fly out and are difficult to collect. Utility Model Content The purpose of this application is to provide a boundary layer water collector to solve at least one of the technical problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, this application provides a boundary layer water collector, including a cylinder wall, blades, boundary layer and bottom plate; The cylinder wall and the bottom plate are integrated to form the main structure of the water collection unit. The blades are set inside the cylinder wall to guide the airflow and increase the probability of water droplet collision. The boundary layer is disposed on the surface of the cylinder wall to capture tiny droplets moving with the airflow and form a liquid film on its surface that flows downward. The base plate is used to support the entire structure and guide the collected liquid.

[0007] Furthermore, the boundary layer has a streamlined shield-like structure; The boundary layer is arranged in an array along the surface of the cylinder wall.

[0008] Furthermore, the boundary layer includes a windward side and a leeward side; The windward surface is a gradually expanding curved arc structure, which is used to guide the airflow to adhere and pass smoothly, reducing turbulence intensity and drag. The leeward side is provided with a flow guiding area to promote the convergence of the liquid film and guide it downward, preventing secondary entrainment.

[0009] Furthermore, the cylinder wall includes a high-wind-speed zone and a low-wind-speed zone; The high-wind-speed zone and the low-wind-speed zone are of equal height, each occupying half of the height of the cylinder wall, and are distributed sequentially from bottom to top along the vertical direction of the cylinder wall.

[0010] Furthermore, the boundary layer includes an elongated boundary layer and a wide circular boundary layer, which are respectively disposed in the high wind speed area and the low wind speed area; Slender boundary layers help reduce airflow resistance and increase liquid film conduction velocity; A wide circular boundary layer can increase the capture area to improve water recovery.

[0011] Furthermore, the top of the boundary layer is designed with a crescent-shaped groove; The crescent groove induces vortex directional separation through asymmetric curved surfaces, which enhances the droplet retention effect, thereby enhancing the accumulation effect of droplets on the leeward side and promoting droplet merging and sliding, thus improving water collection efficiency.

[0012] Furthermore, the boundary layer density in the high wind speed area is higher than that in the low wind speed area, achieving an optimal match between material utilization and water absorption performance.

[0013] Furthermore, the thickness of the boundary layer gradually increases from the airflow inlet end to the outlet end to adapt to changes in airflow velocity and improve droplet capture efficiency.

[0014] Furthermore, the blades, the boundary layer, the cylinder wall, and the bottom plate are all provided with snap-fit ​​structures and are connected through the snap-fit ​​structures.

[0015] Furthermore, the blades are fixed blades installed on the cylinder wall to intercept water droplets carried in the exhaust air of the cooling tower, reduce water evaporation loss, and allow air to pass through smoothly.

[0016] Furthermore, it also includes the central axis; The blades are rotating blades mounted on the central axis, used to agitate the airflow to disrupt the continuity of the liquid film, promote the coalescence of tiny droplets into larger droplets, and thus improve the dehydration efficiency.

[0017] Furthermore, two rotating blades are provided and are coaxially arranged; The two rotating blades are an agitator blade and a water-collecting blade, respectively. The agitating blades are positioned on the windward side of the water-collecting blades, and the two operate in conjunction with a synchronous transmission mechanism. When the airflow drives the agitating blades to rotate, the blades disturb the water molecules in the airflow, disrupting their surface tension balance. This causes micron-sized droplets to become unstable and coalesce, and are then blown upwards by the airflow to the water-collecting blades. There, droplets collide and remain on the water-collecting blades, and the airflow guides the droplets to migrate directionally and accelerate their detachment, preventing secondary entrainment. The water-collecting blades are driven to rotate by the airflow, and the water droplets on them collect and fall.

[0018] Furthermore, the length, thickness, and weight of the agitating blade are all less than the length, thickness, and weight of the water-collecting blade, so that the rotational speed of the agitating blade is higher than that of the water-collecting blade.

[0019] Furthermore, the agitating blade and the water-collecting blade are respectively mounted on the central shaft via a first one-way bearing and a second one-way bearing; The first one-way bearing and the second one-way bearing are arranged in opposite directions, so that the agitating blade and the water-collecting blade rotate in opposite directions.

[0020] Furthermore, it also includes the bearing bracket; The central shaft is mounted inside the cylinder wall via a shaft bracket; The center of the shaft bracket is coaxial with the central axis to ensure the geometric symmetry and dynamic balance of the rotating component; the end of the shaft bracket is fixed to the upper end of the cylinder wall.

[0021] By adopting the above technical solution, this application has the following beneficial effects: (1) Through the streamlined shield-shaped boundary layer structure, crescent groove design, and gradually expanding curved arc structure on the windward side, the airflow is effectively guided, the turbulence intensity is reduced, and the resistance is decreased. At the same time, the droplet retention effect is enhanced, the droplet merging and sliding are promoted, and the water collection efficiency is significantly improved. The differentiated structure of the boundary layer in high and low wind speed areas (slender boundary layer and wide circular boundary layer) and the optimization of the arrangement density further improve the material utilization rate and water collection performance.

[0022] (2) The boundary layer is distributed with non-uniform density along the cylinder wall surface, and its thickness gradually increases from the airflow inlet end to the outlet end, adapting to changes in airflow velocity and enhancing droplet capture efficiency. The guide zone design on the leeward side promotes liquid film convergence and downward guidance, effectively preventing secondary entrainment and improving the stability of liquid collection.

[0023] (3) The fixed blade design effectively intercepts water droplets in the cooling tower exhaust air, reducing evaporation loss, while allowing air to pass through smoothly and maintaining cooling efficiency. The design of rotating blades (including agitating blades and water-collecting blades) disrupts the continuity of the liquid film by agitating the airflow, promoting the coalescence of small droplets into large droplets and improving dehydration efficiency. The counter-rotating blade design further optimizes the treatment effect of airflow and water droplets. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the boundary layer water collector disclosed in this application; Figure 2 This is a three-dimensional isometric solid line drawing of the boundary layer water collector disclosed in this application; Figure 3 This is a front view of the boundary layer water collector disclosed in this application; Figure 4 This is a side view of the boundary layer water collector disclosed in this application; Figure 5 A schematic diagram of the three-dimensional structure of a slender boundary layer; Figure 6 A schematic diagram of the three-dimensional structure of a wide circular boundary layer; Figure 7 A schematic diagram of a three-dimensional structure with a crescent-shaped groove boundary layer; Figure 8 A cross-sectional view of the water collector using the movable blade technology. Figure 9 This is a diagram showing the wind speed distribution in the water collection layer inside a mechanical ventilation cooling tower.

[0026] Figure label: 1-Cylinder wall; 2-Blade; 3-Boundary layer; 4-Bottom plate; 5-Windward side; 6-Leisure side; 7-Agitating blade; 8-Water collecting blade; 9-Slender boundary layer; 10-Wide circular boundary layer; 11-Crescent groove; 12-Central shaft; 13-Shaft bracket; 14-First one-way bearing; 15-Second one-way bearing. Detailed Implementation

[0027] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] It should also be noted that the specific embodiments or implementation methods described below are a series of optimized settings listed in this application to further explain the specific application content, and these settings can be combined or used in conjunction with each other.

[0031] The present application will be further explained below with reference to specific implementation methods.

[0032] like Figure 1-2 As shown, the boundary layer 3 water collector provided in this embodiment includes a cylinder wall 1, blades 2, boundary layer 3 and bottom plate 4; The cylinder wall 1 and the bottom plate 4 are integrated to form the main structure of the water collection unit. The blades 2 are set inside the cylinder wall 1 to guide the airflow and enhance the probability of water droplet collision. The boundary layer 3 is disposed on the surface of the cylinder wall 1 to capture tiny droplets moving with the airflow and form a liquid film on its surface that flows downward. The base plate 4 is used to support the entire structure and guide the collected liquid.

[0033] As a further embodiment of this embodiment, the boundary layer 3 has a streamlined shield-shaped structure; The boundary layer 3 is arranged in an array along the surface of the cylinder wall 1.

[0034] This device, a derivative of the novel cyclone water collector, aims to address the uneven airflow velocity within the cooling tower while maintaining a relatively constant pressure differential. It features a novel cyclone water collector with a boundary layer 3, specifically designed to improve water collection efficiency and reduce windage losses. The boundary layer 3 employs a streamlined shield-like structure to effectively reduce airflow resistance and energy loss. Its unique curved shape allows for the formation of a stable boundary layer as airflow passes over the cylinder wall 1, promoting the adhesion and aggregation of tiny droplets. The array arrangement ensures uniform coverage of the boundary layer 3 on the cylinder wall 1, preventing blind spots and significantly improving water collection efficiency.

[0035] As a further embodiment of this example, the boundary layer 3 includes a windward side 5 and a leeward side 6; The windward surface 5 is a gradually expanding curved arc structure, which is used to guide the airflow to adhere and pass smoothly, reduce turbulence intensity and reduce drag. The leeward side 6 is provided with a flow guiding area to promote the convergence of the liquid film and guide it downward, preventing secondary entrainment.

[0036] In this application, the boundary layer 3 forms a local low-pressure zone on the windward side, inducing airflow to adhere to the wall and effectively suppressing droplet splashing. On the leeward side, the secondary flow field generated by eddy shear enhances droplet collision and aggregation effects. Specifically, a convergent-diffusion flow channel is formed between adjacent boundary layers 3, effectively enhancing local airflow disturbance and promoting the removal of micron-sized droplets. When the airflow passes through the convergent section, the velocity gradually increases, and the liquid film formed on the surface of the boundary layer 3 extends stably downstream under shear force. When the airflow enters the diffusion section, the velocity decreases, the pressure rises, and a micro-cell effect is formed between adjacent boundary layers 3, promoting the migration and adhesion of tiny droplets to the wall, thereby causing residual droplets to impact and be captured on the surface of the boundary layer 3. This structure significantly improves water collection efficiency while ensuring low resistance, especially exhibiting excellent removal capability for droplets with a diameter of less than 5 micrometers.

[0037] In actual operation, the curved arc parameters of boundary layer 3 can be optimized according to specific working conditions. For example, by adjusting the radius of curvature and the gradual expansion angle of the windward surface 5, the adhesion requirements under different airflow velocities can be adapted. The surface roughness of the guide zone is specially treated to prevent the liquid film from breaking during flow and to accelerate the liquid film convergence rate through an appropriate surface tension gradient.

[0038] To ensure smooth entry of the droplet-carrying airflow into the collector, the lowest boundary layer 3 structure is positioned 25-45mm from the bottom of the collector. Simultaneously, it ensures that droplets in the airflow passing through the highest layer of the collector accumulate on the collector wall due to eddy currents. The highest boundary layer 3 is positioned 20-40mm from the collector outlet. To accommodate more boundary layer 3 structures while ensuring droplet accumulation on the leeward side 6 of the boundary layer 3, the vertical spacing between boundary layer 3 structures is 40-50mm, and the left and right boundary layer 3 structures are staggered by 20-30mm. Each row contains 3-4 boundary layer 3 structures, evenly distributed inside the collector cylinder wall 1, totaling 36-40 rows. When a boundary layer 3 structure intersects with the blade 2 and causes conflict, the corresponding boundary layer 3 structure needs to be removed.

[0039] This layered, staggered arrangement not only maximizes the number of boundary layers 3 per unit space but also further enhances droplet collision efficiency through airflow disturbance between adjacent columns. In actual assembly, the boundary layer 3 structure is integrally molded from high-strength, corrosion-resistant materials and fixed to the collector cylinder wall 1 via a slotted connection, ensuring structural stability under long-term airflow impact and liquid film immersion environments. Simultaneously, the installation angle of each column of boundary layers 3 can be finely adjusted by ±5° according to the airflow inlet direction to accommodate potential airflow deviation issues in different equipment layouts, further optimizing the droplet capture path.

[0040] As a further embodiment of this embodiment, the cylindrical wall 1 includes a high wind speed zone and a low wind speed zone; The high-wind-speed zone and the low-wind-speed zone are of equal height, each occupying half of the height of the cylinder wall 1, and are distributed sequentially from bottom to top along the vertical direction of the cylinder wall 1.

[0041] like Figure 5-6 As shown, as a further embodiment of this example, the boundary layer 3 includes an elongated boundary layer 9 and a wide circular boundary layer 10, which are respectively disposed in the high wind speed area and the low wind speed area. The elongated boundary layer 9 helps reduce airflow resistance and increase liquid film conduction velocity; The wide circular boundary layer 10 can increase the capture area to improve water recovery rate.

[0042] like Figure 7 As shown, as a further embodiment of this example, the top of the boundary layer 3 is designed with a crescent groove 11; The crescent groove 11 induces vortex directional separation through asymmetric curved surface, which enhances the droplet retention effect, thereby enhancing the accumulation effect of droplets on the leeward side 6 and promoting droplet merging and sliding, thus improving water collection efficiency.

[0043] In this application, the boundary layer 3 is designed as a slender boundary layer 9 in high wind speed areas with a sharp arc at the bottom to enhance the interception capability of high-speed droplets. In low wind speed areas, a wide and round boundary layer 10 is adopted with a smooth arc at the bottom to improve the stability of liquid film formation. The top is uniformly optimized into a crescent shape to effectively guide droplets to gather on the leeward side 6, thereby improving the deposition effect and water collection efficiency.

[0044] In actual operation, the slender boundary layer 9 in the high-wind-speed zone, with its streamlined design, can quickly guide droplets in the high-speed airflow to the surface of the cylinder wall 1, reducing droplet splashing caused by airflow disturbance. The wide circular boundary layer 10 in the low-wind-speed zone increases the contact area with the airflow, making it easier for low-speed flowing droplets to adhere and form a continuous liquid film, avoiding evaporation due to excessively long residence time of droplets on the surface caused by slow flow. The curved surface design of the crescent groove 11 optimizes the trajectory of droplets. When the airflow passes over the top of the boundary layer 3, the vortex is directionally separated under the action of the curved surface, pushing the droplets towards the leeward side 6 and causing them to collide and merge with each other, forming larger droplets that slide down the cylinder wall 1, effectively reducing the probability of droplets escaping with the airflow, thus significantly improving the overall water collection effect while ensuring smooth airflow.

[0045] As a preferred embodiment of this invention, the boundary layer 3 is arranged at a higher density in the high wind speed area than in the low wind speed area, thereby achieving an optimal match between material utilization and water absorption performance.

[0046] In a preferred embodiment of this invention, the thickness of the boundary layer 3 gradually increases from the airflow inlet end to the outlet end to adapt to changes in airflow velocity and improve droplet capture efficiency.

[0047] In high-wind-speed areas, a higher density of the boundary layer can form a denser interception barrier within a unit space. Even when facing tiny droplets dispersed in high-speed airflow, the synergistic effect of the multi-layer structure can improve the capture probability, preventing some droplets from passing directly through the interception gap due to insufficient density. In low-wind-speed areas, the airflow speed is slower, and the droplet kinetic energy is lower. Appropriately reducing the density of the boundary layer can reduce airflow resistance. At the same time, combined with the liquid film formation characteristics of the wide circular boundary layer 10, it can still maintain a high droplet collection capacity, thus finding a balance between material usage and water collection effect. The gradient design of the boundary layer 3 thickness is consistent with the velocity distribution law of the airflow in the water collector. The airflow velocity is higher at the inlet end, and the thinner boundary layer 3 can reduce the energy loss caused by airflow impact, ensuring that the airflow enters the water collection area quickly. As the airflow flows towards the outlet end, the velocity gradually decreases, and the thicker boundary layer 3 can provide a larger contact area and a longer action path, so that droplets that are originally difficult to capture even if they pass through quickly can also be effectively adsorbed, further improving the overall droplet capture efficiency.

[0048] The boundary layer 3 of this application achieves the integrated molding of the above-mentioned complex structure through injection molding process, ensuring the geometric accuracy and surface smoothness of the boundary layer 3, effectively improving the fluidity of the liquid film and reducing flow resistance; the material is a modified engineering plastic that is corrosion-resistant and anti-aging, which significantly enhances the long-term stability in high humidity and high temperature environments; combined with the airflow distribution characteristics inside the cooling tower, the slender, wide-round and crescent-shaped structures are regionally matched and arranged to optimize the local water collection performance.

[0049] In a preferred embodiment of this invention, the blade 2, the boundary layer 3, the cylinder wall 1, and the bottom plate 4 are all provided with snap-fit ​​structures and are connected by snap-fit ​​structures.

[0050] As a further embodiment of this invention, the blade 2 is a fixed blade 2 disposed on the cylinder wall 1, used to intercept water droplets carried in the exhaust air of the cooling tower, reduce water evaporation loss, and allow air to pass through smoothly.

[0051] The tilt angle of the fixed blade 2 is optimized through fluid dynamics simulation to form an angle of attack of 15°-30° with the airflow direction. This avoids the direct impact of the airflow and the resulting eddy current loss, while also guiding the droplets to flow along the boundary layer 3 on the surface of the blade 2 and converge into a water flow. The micron-level guide grooves on the surface of the blade 2 are spirally distributed, which can accelerate the efficiency of the liquid film gathering at the bottom of the blade 2, reduce the risk of secondary atomization of droplets, and ensure that the intercepted water flows back to the cooling tower circulation system quickly.

[0052] like Figure 8 As shown, as a further embodiment of this example, the blade 2 is a rotating blade set on the central shaft 12, used to agitate the airflow to disrupt the continuity of the liquid film, promote the coalescence of small droplets into large droplets, thereby improving the dehydration efficiency.

[0053] As a further embodiment of this invention, two rotating blades are provided and are coaxially arranged; The two rotating blades are agitator blade 7 and water-collecting blade 8; The agitating blade 7 is located on the windward side of the water-collecting blade 8, and the two operate in conjunction with each other through a synchronous transmission mechanism. When the airflow drives the agitating blade 7 to rotate, the agitating blade 7 disturbs the water molecules in the airflow, breaking their surface tension balance, causing micron-sized droplets to become unstable and coalesce, and then be blown upward by the airflow to the water-collecting blade 8, where droplets collide and remain, guiding the droplets to migrate directionally and accelerate their detachment, preventing secondary entrainment. The water-collecting blade 8 is driven to rotate by the airflow, and the water droplets on it collect and fall.

[0054] As a further embodiment of this example, the length, thickness, and weight of the agitating blade 7 are all less than the length, thickness, and weight of the water-collecting blade 8, so that the rotation speed of the agitating blade 7 is higher than the rotation speed of the water-collecting blade 8.

[0055] The speed difference between the agitating blade 7 and the collecting blade 8 creates a velocity gradient field, enhancing airflow disturbance and droplet collision probability, thereby improving coalescence efficiency. When the collecting blade 8 rotates slowly, it facilitates the uniform distribution and continuous renewal of the liquid film on the surface of the blade 2, avoiding localized liquid accumulation or dry spots, further improving drainage efficiency; simultaneously, it reduces the risk of secondary droplet breakage and decreases the probability of escape. During rotation, the centrifugal force and airflow shear force of the collecting blade 8 work synergistically to accelerate the detachment of large droplets and their directional return along the guide channel into the tower, ensuring efficient dehydration while maintaining system stability.

[0056] The droplets collected from the 8 water-collecting blades, due to their initial circumferential velocity, fall in a spiral trajectory under the influence of centrifugal force and gravity. This effectively extends the droplet fall path, increasing gas-liquid separation, and avoids concentrated falls that could impact the packing layer. Simultaneously, the spirally falling droplets interact with the rising airflow during their descent, continuously collecting water and further enhancing overall water collection efficiency. This design, through the synergistic optimization of aerodynamic characteristics and structural form, achieves an organic combination of efficient dehydration and long-term stable operation. It is suitable for cooling tower systems operating under high air volume and high humidity conditions, demonstrating excellent engineering results.

[0057] As a further embodiment of this example, the agitating blade 7 and the water collecting blade 8 are respectively mounted on the central shaft 12 via a first one-way bearing 14 and a second one-way bearing 15; The first one-way bearing 14 and the second one-way bearing 15 are arranged in opposite directions, so that the stirring blade 7 and the water collecting blade 8 rotate in opposite directions.

[0058] In this embodiment, the counter-rotating design of the agitator blade 7 and the water-collecting blade 8 further enhances the airflow disturbance intensity, expands the velocity shear layer range, effectively suppresses the axial migration of the liquid film along the surface of the blade 2, and avoids water accumulation. Simultaneously, the vortex flow generated by the counter-rotation accelerates the lateral migration and collision coalescence of tiny droplets, significantly improving separation efficiency. This configuration, while ensuring a compact structure, optimizes the dynamic distribution within the airflow channel, making the dehydration process more uniform and stable, especially suitable for high-efficiency and energy-saving requirements under varying operating conditions. Furthermore, the counter-rotation design also reduces equipment vibration and noise levels, improving operational stability and environmental friendliness.

[0059] As a further embodiment of this invention, a shaft bracket 13 is also included; The central shaft 12 is mounted inside the cylinder wall 1 via a shaft bracket 13; The center of the shaft bracket 13 is coaxially arranged with the central shaft 12 to ensure the geometric symmetry and dynamic balance of the rotating component; the end of the shaft bracket 13 is fixed to the upper end of the cylinder wall 1.

[0060] The shaft bracket 13 is integrally formed from high-strength alloy material and is detachably connected to the cylinder wall 1 via a snap-fit ​​structure at the ends. Its radial support arms are evenly distributed radially, ensuring stable support for the central shaft 12 while avoiding significant resistance to the main airflow path. The surface of the support arms is streamlined to reduce local eddy current losses caused by airflow around the shaft and lower system pressure resistance. In addition, the shaft bracket 13 has pre-reserved lubrication oil channels, which provide long-term lubrication for the central shaft 12 through self-lubricating bearing seats, effectively reducing frictional losses during high-speed rotation and extending equipment maintenance cycles.

[0061] By adopting the above technical solution, this application has the following beneficial effects: (1) Through the optimized design and layered staggered arrangement of boundary layer 3, the water collection efficiency is significantly improved, and it has excellent droplet removal ability while ensuring low resistance characteristics.

[0062] (2) The structural design of the windward side 5 and the leeward side 6 of the boundary layer 3 effectively reduces the turbulence intensity, reduces the resistance, promotes liquid film convergence and flow guidance, and prevents secondary entrainment.

[0063] (3) Different types of boundary layers are used in high wind speed area and low wind speed area to achieve optimal matching of material utilization and water collection performance. The design of crescent groove 11 further enhances the droplet retention and merging effect.

[0064] (4) The reverse rotation of the rotating blades and the speed difference design enhance the probability of airflow disturbance and droplet collision, while the structural design of the shaft frame ensures the stable operation and low resistance characteristics of the rotating parts.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A boundary layer water collector, characterized in that, This includes the cylinder wall, blades, boundary layer, and bottom plate; The cylinder wall and the bottom plate are integrated to form the main structure of the water collection unit. The blades are set inside the cylinder wall to guide the airflow and increase the probability of water droplet collision. The boundary layer is disposed on the surface of the cylinder wall to capture tiny droplets moving with the airflow and form a liquid film on its surface that flows downward. The base plate is used to support the entire structure and guide the collected liquid.

2. A boundary layer water collector according to claim 1, characterized in that, The boundary layer has a streamlined shield-shaped structure; The boundary layer is arranged in an array along the surface of the cylinder wall.

3. A boundary layer water collector according to claim 1, characterized in that, The boundary layer includes a windward side and a leeward side; The windward surface is a gradually expanding curved arc structure, which is used to guide the airflow to adhere and pass smoothly, reducing turbulence intensity and drag. The leeward side is provided with a flow guiding area to promote the convergence of the liquid film and guide it downward, preventing secondary entrainment.

4. A boundary layer water collector according to claim 1, characterized in that, The cylinder wall includes a high wind speed zone and a low wind speed zone; The high-wind-speed zone and the low-wind-speed zone are of equal height, each occupying half of the height of the cylinder wall, and are distributed sequentially from bottom to top along the vertical direction of the cylinder wall.

5. A boundary layer water collector according to claim 4, characterized in that, The boundary layer includes an elongated boundary layer and a wide circular boundary layer, which are respectively set in the high wind speed area and the low wind speed area; Slender boundary layers help reduce airflow resistance and increase liquid film conduction velocity; A wide circular boundary layer can increase the capture area to improve water recovery.

6. A boundary layer water collector according to claim 1, characterized in that, The top of the boundary layer is designed with a crescent-shaped groove; The crescent groove induces vortex directional separation through asymmetric curved surfaces, which enhances the droplet retention effect, thereby enhancing the accumulation effect of droplets on the leeward side and promoting droplet merging and sliding, thus improving water collection efficiency.

7. A boundary layer water collector according to claim 4, characterized in that, The boundary layer has a higher density in the high wind speed area than in the low wind speed area, achieving an optimal match between material utilization and water absorption performance.

8. A boundary layer water collector according to claim 1, characterized in that, The thickness of the boundary layer gradually increases from the airflow inlet to the outlet to adapt to changes in airflow velocity and improve droplet capture efficiency.

9. A boundary layer water collector according to claim 1, characterized in that, The blades, the boundary layer, the cylinder wall, and the bottom plate are all provided with snap-fit ​​structures and are connected by snap-fit ​​structures.

10. A boundary layer water collector according to claim 1, characterized in that, The blades are fixed blades installed on the cylinder wall, used to intercept water droplets carried in the exhaust air of the cooling tower, reduce water evaporation loss, and allow air to pass through smoothly.

11. A boundary layer water collector according to claim 1, characterized in that, It also includes the central axis; The blades are rotating blades mounted on the central axis, used to agitate the airflow to disrupt the continuity of the liquid film, promote the coalescence of tiny droplets into larger droplets, and thus improve the dehydration efficiency.

12. A boundary layer water collector according to claim 11, characterized in that, The rotating blades are provided in two parts and are arranged coaxially; The two rotating blades are an agitator blade and a water-collecting blade, respectively. The agitating blade is located on the windward side of the water-collecting blade, and the two operate in conjunction with each other through a synchronous transmission mechanism. When the airflow drives the agitating blade to rotate, the agitating blade disturbs the water molecules in the airflow, breaks their surface tension balance, causes micron-sized droplets to become unstable and aggregate, and is then blown upward by the airflow to the water-collecting blade, where droplets collide and remain, guiding the droplets to migrate in a directional manner and accelerating their detachment, preventing secondary entrainment. The water-collecting blade is driven to rotate by the airflow, and the water droplets on it collect and fall.

13. A boundary layer water collector according to claim 12, characterized in that, The length, thickness, and weight of the agitating blade are all less than those of the water-collecting blade, so that the rotational speed of the agitating blade is higher than that of the water-collecting blade.

14. A boundary layer water collector according to claim 12, characterized in that, The agitating blades and the water-collecting blades are respectively mounted on the central shaft via a first one-way bearing and a second one-way bearing; The first one-way bearing and the second one-way bearing are arranged in opposite directions, so that the agitating blade and the water-collecting blade rotate in opposite directions.

15. A boundary layer water collector according to claim 11, characterized in that, It also includes the shaft bracket; The central shaft is mounted inside the cylinder wall via a shaft bracket; The center of the shaft bracket is coaxial with the central axis to ensure the geometric symmetry and dynamic balance of the rotating component; the end of the shaft bracket is fixed to the upper end of the cylinder wall.

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