Special fog-eliminating cooling tower for heat exchange filler unit

Abstract

The application discloses a special fog-eliminating cooling tower for a fog-eliminating heat exchange filler unit and relates to the technical field of cooling towers. The fog-eliminating heat exchange filler unit is arranged in the tower body, the fog-eliminating heat exchange filler unit is alternately arranged with fog-eliminating heat exchange cavities and fillers, the fog-eliminating heat exchange cavities are arranged in a flat shape, the upper end of the fog-eliminating heat exchange cavities is provided with fluid distribution ports communicating with the inner cavities, the lower end of the fog-eliminating heat exchange cavities is fixedly connected with reinforced heat dissipation pipe groups communicating with the inner cavities, the high-efficiency heat exchange water distribution pipeline and the special fog-eliminating water distribution pipeline are arranged in parallel from top to bottom above the fog-eliminating heat exchange filler unit, and the special fog-eliminating water distribution pipeline corresponds to the fluid distribution ports of the fog-eliminating heat exchange cavities. The application solves the problems of the conventional fog-eliminating cooling tower, such as seasonal performance fluctuation, difficulty in transformation and the problem that heat exchange efficiency and fog-eliminating performance cannot be considered simultaneously.

Description

Technical Field

[0002] This invention relates to the field of cooling tower technology, and more specifically to a dedicated demisting cooling tower for demisting heat exchange packing units. Background Technology

[0004] Current anti-fogging cooling tower technology has formed two main systems: condensing modules and dry-wet cooling. Condensing module technology, by installing a high-efficiency condensing device on the tower body, uses an ambient cold source to force the humid air to undergo a phase change and condense, reducing the relative humidity of the exhaust gas to near ambient levels and achieving anti-fogging. This is suitable for the environmental retrofitting of existing cooling towers in cold northern regions. Dry-wet cooling technology, on the other hand, arranges the air cooler and water-cooled section in series, controlling the air distribution ratio between the dry and wet sections to achieve anti-fogging while maintaining the cooling temperature difference.

[0005] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects: First, the system's resistance characteristics are a significant issue. The condenser module increases wind resistance considerably, and the increased overall resistance in the dry-wet system due to the air-cooled section forces the fan to consume more energy. Second, the defogging effect is significantly affected by environmental parameters. When the ambient temperature or relative humidity is high, the defogging efficiency of the condenser module decreases significantly, and the dry-wet system is prone to incomplete defogging under low-temperature and high-humidity conditions. Most importantly, its year-round operational stability is insufficient. In summer, the condenser module's condensation efficiency decreases, leading to a reduction in cooling capacity. The limited heat exchange capacity of the air-cooled section in the dry-wet system further reduces the overall cooling effect. Furthermore, the high cost of retrofitting limits its wider application.

[0006] Secondly, in conventional packing materials for cooling towers, the structural limitations of the packing material restrict its ability to exchange heat, making it impossible to simultaneously achieve both heat exchange and defogging functions.

[0007] Third, when a traditional cooling tower is equipped with a defogging heat exchange chamber shell unit, in its defogging mode, water needs to be distributed only to the heat exchange chamber shell. However, traditional cooling towers are limited by the spray system and cannot distribute circulating cooling water only in the defogging heat exchange chamber shell to form a uniform and stable water film, which leads to the inability to achieve the best defogging and heat exchange effect.

[0008] Fourth: When renovating existing old towers, it is often necessary to carry out large-scale demolition and alteration on the original tower structure, which leads to increased costs and manpower input, greater construction difficulty, and a longer construction period.

[0009] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this invention provides a dedicated defogging cooling tower for defogging heat exchange packing units, which solves the problems of seasonal performance fluctuations, difficulties in modification, and inability to balance heat exchange efficiency and defogging performance that are common in traditional defogging cooling towers.

[0012] To achieve the above objectives, the present invention provides the following technical solution: A dedicated defogging cooling tower with defogging heat exchange packing unit includes a tower body. Inside the tower body are defogging heat exchange packing units. These units are alternately and sequentially arranged in a defogging heat exchange chamber shell and packing. The defogging heat exchange chamber shell is flat and has a fluid distribution port at its upper end, connecting to its inner cavity. A reinforced heat dissipation pipe assembly, also connecting to its inner cavity, is fixedly connected to the lower end of the defogging heat exchange chamber shell. Above the defogging heat exchange packing unit, a high-efficiency heat exchange water distribution pipeline and a dedicated defogging water distribution pipeline are arranged side by side from top to bottom. The dedicated defogging water distribution pipeline corresponds to the fluid distribution port of the defogging heat exchange chamber shell.

[0013] As an optimized solution, the defogging heat exchange chamber shell includes a flat chamber shell structure, and the opposite side walls of the chamber shell structure are provided with a concave enhanced heat exchange structure. The lower end of the chamber shell structure is fixedly connected to a fluid discharge integrated pipe that is connected to the enhanced heat dissipation tube assembly.

[0014] As an optimized solution, the opposite side walls of the cavity shell structure are provided with a continuous bending sealing structure. The continuous bending sealing structure includes two relatively inclined first side bending portions, and the other ends of the two first side bending portions are fixedly connected to parallel second side bending portions. The two second side bending portions are fitted and fixedly connected to each other.

[0015] As an optimized solution, the fluid discharge integrated pipe includes a drainage channel structure connected to the lower port of the cavity shell structure, and the drainage channel has several pipe interfaces connected in parallel to its inner cavity.

[0016] As an optimized solution, the drainage channel structure includes two downwardly inclined first bottom bends, and the other ends of the two first bottom bends are fixedly connected downwards to parallel second bottom bends, with the two second bottom bends being fitted and fixed together.

[0017] As an optimized solution, the continuous bending sealing structure and the fluid discharge integrated pipe are provided with a rounded corner transition structure at the corner of the cavity shell structure.

[0018] As an optimized solution, the enhanced heat exchange structure includes several obliquely corrugated reinforcement units distributed in parallel along an oblique direction.

[0019] As an optimized solution, the cross-sectional shape of the oblique corrugated reinforcement unit is a semi-circular groove.

[0020] As an optimized solution, the surface of the oblique corrugated reinforcement unit is provided with several semi-circular arc-shaped elongated microstructure reinforcement textures arranged side by side along its extension direction.

[0021] As an optimized solution, several of the microstructure reinforcement textures are arranged at equal intervals, and the extension direction of the microstructure reinforcement textures is orthogonal to the extension direction of the oblique corrugated reinforcement unit.

[0022] As an optimized solution, the opposite sidewalls of the cavity shell structure are provided with a number of vertically arranged concave reinforcing ribs, which are located in the central area of ​​the cavity shell structure and near the side edge.

[0023] As an optimized solution, the cross-section of the concave reinforcing rib is rectangular.

[0024] As an optimized solution, the enhanced heat dissipation tube assembly includes enhanced heat dissipation tubes connected to each of the tube interfaces.

[0025] As an optimized solution, the lower end of the enhanced heat dissipation pipe extends to the water surface of the pool.

[0026] As an optimized solution, the enhanced heat exchange tube includes one of finned heat exchange tubes, smooth heat exchange tubes, and corrugated heat exchange tubes.

[0027] As an optimized solution, the dedicated anti-fogging water distribution pipeline includes a dedicated anti-fogging water distribution grid-type water distribution structure and a dedicated anti-fogging water distribution branch pipe-type water distribution structure.

[0028] As an optimized solution, the dedicated anti-fogging water distribution grid-type water distribution structure includes an inlet main pipe, water distribution branch pipes, and multiple grid-type water distribution units.

[0029] As an optimized solution, the bar-type water distribution unit includes a bar-type main water inlet pipe, and several bar-type branch water distribution pipes corresponding to each anti-fogging heat exchange chamber shell are fixedly connected in parallel on the bar-type main water inlet pipe. Several outlets are opened in parallel along the extension direction of the bar-type branch water distribution pipes, and each outlet is provided with a water distribution structure.

[0030] As an optimized solution, the water distribution branch pipe is vertically connected to the main water inlet pipe.

[0031] As an optimized solution, each of the water distribution branch pipes is connected in parallel with several grid-type water inlet main pipes.

[0032] As an optimized solution, the water distribution branch pipes are symmetrically connected to the main water inlet pipe.

[0033] As an optimized solution, a connector that connects to the water distribution branch pipe is fixedly connected to the middle position of the bar-type water inlet main pipe.

[0034] As an optimized solution, the dedicated anti-fogging water distribution branch pipe type water distribution structure includes an anti-fogging water distribution main pipe, and several anti-fogging water distribution branch pipes corresponding to each anti-fogging heat exchange chamber shell are fixedly connected in parallel on the anti-fogging water distribution main pipe.

[0035] As an optimized solution, the anti-fogging water distribution branch pipe has several water outlets arranged in parallel along its extension direction, and each water outlet is equipped with a water distribution structure.

[0036] As an optimized solution, the anti-fogging water distribution branch pipe is vertically connected to the anti-fogging water distribution main pipe.

[0037] As an optimized solution, the water distribution structure includes a duckbill-shaped flat nozzle.

[0038] As an optimized solution, the extension direction of the duckbill-shaped flat nozzle is parallel to the extension direction of the grid-type water distribution branch pipe and the anti-fog water distribution branch pipe.

[0039] As an optimized solution, the water distribution structure includes a flat opening.

[0040] As an optimized solution, the opening extension direction of the flat opening is parallel to the extension direction of the grid-type water distribution branch pipe and the anti-fog water distribution branch pipe.

[0041] As an optimized solution, several of the aforementioned duckbill-shaped flat nozzles are arranged at equal intervals.

[0042] As an optimized solution, several of the flat openings are arranged at equal intervals.

[0043] As an optimized solution, a water collector is installed in the area above the high-efficiency heat exchange water distribution pipeline in the tower body.

[0044] As an optimized solution, the upper end of the high-efficiency heat exchange water distribution pipeline is provided with several nozzles arranged in parallel along its extension direction, and the nozzles of the nozzles are set upward.

[0045] As an optimized solution, a fan is installed at the top of the tower.

[0046] Compared with the prior art, the beneficial effects of the present invention are: This defogging heat exchange system employs a unique modular design concept, organically combining the defogging heat exchange chamber shell with high-performance packing material. The configuration ratio of these two components is adjusted to adapt to the climatic characteristics and environmental requirements of different regions. The innovative defogging heat exchange chamber shell structure features specially reinforced heat exchange tubes at the bottom, extending directly to the water surface area, forming a highly efficient heat exchange system together with the upper defogging heat exchange packing unit. The system utilizes an independent water distribution design for both high-efficiency heat exchange and dedicated defogging functions, allowing for flexible adjustment of the water distribution ratio between the two systems according to seasonal changes and operating conditions to achieve optimal operation. This modular structure retains the high-efficiency heat exchange characteristics while enhancing the defogging effect through the defogging heat exchange chamber shell. The entire system employs a relatively simple connection method, making installation and modification processes more convenient and efficient. The high-efficiency heat exchange water distribution pipeline and the dedicated anti-fogging water distribution pipeline adopt dynamic water distribution in different areas and time periods. By optimizing the water flow distribution sequence, the system operating parameters can be precisely controlled. Two sets of water distribution devices with independent functions but coordinated with each other are integrated, including the high-efficiency heat exchange water distribution pipeline and the dedicated anti-fogging water distribution pipeline. A composite water distribution structure is specially designed for the anti-fogging heat exchange chamber shell. Through innovative water flow organization, it can achieve uniform water distribution, anti-fogging optimization and heat exchange enhancement. In defogging operation mode, the system uses a unique circulating cooling water distribution structure to evenly distribute circulating cooling water into the defogging heat exchange chambers of each defogging heat exchange packing unit. Relying on the guiding and distribution function of the defogging heat exchange chambers, a continuous and stable descending water film forms along the inner wall of the chamber. Outside cold air enters from the bottom of the defogging heat exchange packing unit, flows through the high-performance packing area that works in conjunction with the defogging heat exchange chamber, and efficiently exchanges heat with the water film on the inner wall of the chamber through indirect heat conduction and convection, achieving the defogging effect. The system employs a hot and cold state partitioning design, achieving complete isolation between the gas and liquid phases, ensuring that the rising air does not carry liquid moisture, fundamentally preventing water evaporation and the formation of visible mist plumes. In addition, after the circulating cooling water completes one heat exchange and defogging in the defogging heat exchange unit, it continues to enter the enhanced heat dissipation tube group for a second heat exchange. The outside cold air and the cooling water that has completed one heat exchange in this area exchange heat again through the partition heat exchange method, which further improves the overall heat exchange efficiency and defogging effect of the system. The entire system is based on the principle of heat exchange between gas and liquid phases through the wall, realizing a "heat transfer without mass transfer" defogging mechanism, which completely eliminates the white fog phenomenon. At the same time, it implements gradual deep cooling of the circulating cooling water through a stepped cooling method. The system also has high operational flexibility and configuration adaptability. The defogging heat exchange unit adopts a modular adjustable layout design, and the volume ratio of the defogging heat exchange chamber shell and high-performance packing can be flexibly adjusted according to different regional climate conditions and environmental protection requirements. The upper end of the cavity structure is provided with a fluid distribution port that connects to its inner cavity, which can efficiently and evenly receive cooling water from the external system and achieve stable flow guidance, ensuring that the cooling medium is evenly distributed on the surface of the heat exchange area. The continuous bending sealing structure not only significantly increases the combined contact area, but also effectively improves the stiffness of the connection between adjacent units and the overall structural stability. The fluid discharge integrated pipe includes several parallel pipe connections to ensure consistent fluid distribution in each branch channel; The fluid discharge integrated connector features a V-shaped flow guide structure at the bottom, further enhancing the continuous strength and sealing reliability of the interface. This flow guide channel is continuously connected to each pipe joint, enabling efficient collection and even distribution of circulating cooling water to each outlet. The fluid discharge integrated pipe is manufactured using a one-piece molding process, with no assembly seams, good structural integrity, and excellent sealing performance.

[0047] The rounded corner transition structure, the continuous bending sealing structure, and the fluid discharge integrated pipe together form a continuous and complete sealing boundary; The cavity shell structure adopts a standardized rectangular frame structure, forming a complete and sealed rectangular heat exchange cavity. It has significant modular features, which is conducive to large-scale production and rapid on-site assembly with surrounding components. While effectively controlling the overall manufacturing cost, it greatly improves the maintainability and ease of operation of the equipment. The oblique corrugated reinforcement unit has a consistent radius of curvature and unit spacing, and extends continuously at a specific angle relative to the cavity plane. The circulating cooling water enters the cavity from the fluid distribution port at the top and flows downward along the inner wall. Guided by the oblique corrugated reinforcement unit, it spreads downward at a slow and uniform flow rate, forming a continuous and stable covering water film in the process. The surface features a regularly arranged microstructure reinforcement pattern, consisting of semi-circular, elongated raised strips spaced at uniform intervals and depths. The pattern's direction is orthogonal to the main corrugated structure, collectively forming a multi-level composite enhanced heat transfer surface. This microstructure reinforcement pattern not only significantly improves the structural strength of the oblique corrugated unit itself but also effectively increases the actual heat transfer area, prolongs the residence time of the cooling water film in the heat transfer zone, and promotes a more uniform liquid film distribution, thereby significantly improving overall heat transfer efficiency and demisting performance. To ensure the structural stability of the main heat exchange zone during long-term operation, supporting and reinforcing ribs are installed in the central area of ​​the heat exchange zone and on the inner side of the long side of the frame. The ribs are symmetrically distributed with the center of the heat exchange zone as the reference, and the edge supporting and reinforcing ribs maintain a constant distance from the inner wall of the long side of the frame. These ribs adopt a rectangular cross-section, and their height gradually decreases from the root to the top with a consistent draft angle. Together with the surrounding frame and corrugated units, they form a high-rigidity overall support system, which can effectively suppress structural deformation caused by water flow impact, temperature alternation and material fatigue, and ensure the long-term stable and reliable operation of the anti-fogging heat exchange chamber shell under complex working conditions. The anti-fogging heat exchange chamber shell and packing are arranged in alternating layers, with a volume ratio of 1:8. This ratio can be flexibly adjusted according to the climate of the actual application area, the packing material, and specific heat exchange requirements. Under the premise of ensuring the system has high-efficiency heat exchange performance and excellent anti-fogging effect, its maximum allowable ratio can be expanded to 1:1. In terms of structural connection, the anti-fogging heat exchange chamber shell and high-performance packing can be reliably fixed in a variety of ways, including but not limited to bonding, hoisting, or using external frame support. The unit is installed in the packing area of ​​the cooling tower and features flexible assembly, strong adaptability and convenient maintenance. It can operate stably under different working conditions and effectively achieve the dual functions of water saving and mist elimination. The enhanced heat dissipation pipe assembly is located below the defogging heat exchange packing unit and connected to the defogging heat exchange chamber shell, used to further enhance the overall heat dissipation performance of the system. The enhanced heat dissipation pipe assembly achieves a reliable connection to the defogging heat exchange chamber shell through pipe joints. The pipe connection can be connected to the defogging heat exchange chamber shell by adhesive bonding, pin connection or other mechanical fastening methods; The reinforced heat dissipation pipes achieve a sealed connection with the pipe joint through various methods such as snap-fit, flange docking, welding or threaded connection, so as to facilitate on-site installation and later maintenance; The enhanced heat dissipation pipe adopts an ultra-thin straight-through structure design, which matches the size of the shell and tube interface of the defogging heat exchange chamber. The end of the pipe extends to the horizontal plane of the water tank, forming a stable water flow channel and reducing the turbulence of the water flow. In terms of materials, reinforced heat pipes can be made of different materials such as aluminum alloy, stainless steel, titanium alloy, metal matrix composite material, polymer composite material, ceramic or PVC, depending on actual needs, to meet multiple requirements such as corrosion resistance, thermal conductivity and economy. The structural form of the heat exchange tube can be flexibly selected according to the actual heat exchange requirements and operating environment: for working conditions with high heat exchange requirements, ultra-thin finned heat exchange tubes can be used to increase the heat transfer area; under normal heat exchange conditions, ultra-thin smooth heat exchange tubes can be selected to improve performance and cost; in the case of vibration or need to compensate for thermal expansion and contraction, corrugated reinforced heat exchange tubes can be used to improve structural reliability; and for application scenarios with strict requirements for temperature distribution uniformity, gradient ultra-thin finned tubes can be used to achieve more precise heat exchange control. The grid-type water distribution branch pipes or anti-fogging water distribution branch pipes are arranged in a one-to-one correspondence with the anti-fogging heat exchange chamber shells, and are fixedly installed directly above the fluid distribution openings on the top of each anti-fogging heat exchange chamber shell, ensuring that each heat exchange unit can obtain independent and uniform water supply. Each grid-type water distribution branch pipe or anti-fog water distribution branch pipe has a duckbill-shaped flat nozzle or flat opening installed at its outlet. When installed, it extends deep into the anti-fog heat exchange chamber shell, so that the circulating cooling water forms a directional spray effect, directly acting on the two side walls of the anti-fog heat exchange chamber shell to form a uniform and stable slow-flowing water film and establish an efficient heat exchange interface. The bar-type water inlet main pipe is connected to the water inlet main pipe through water distribution branch pipes. The system adopts a highly modular configuration. In practical applications, the number of independent bar water distribution units can be flexibly determined according to the specific specifications of the cooling tower and the heat exchange requirements. Each independent water distribution unit can cover 30 to 50 or even more anti-fogging heat exchange units, demonstrating good engineering adaptability and scalability.

[0048] Employing a highly modular structural design, with standardized interfaces and replaceable units, it can not only adapt to the construction requirements of various new cooling towers, but also provide an ideal solution for the renovation of existing old towers. Its rapid installation structure design allows for functional upgrades to be completed by only partially replacing the original water distribution system and packing components, avoiding the large-scale dismantling and modification of the tower structure in traditional renovation projects, and significantly reducing renovation costs and construction difficulty. Attached Figure Description

[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0051] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the water distribution effect in the non-fogging mode of the present invention; Figure 3 This is a schematic diagram illustrating the water distribution effect of the defogging mode of the present invention; Figure 4 This is a schematic diagram of the structure of the defogging heat exchange chamber shell of the present invention; Figure 5 This is a schematic diagram of the continuous bending sealing structure of the present invention; Figure 6 This is a schematic diagram of the pipe connection interface of the present invention; Figure 7 This is a schematic diagram of the integrated fluid discharge pipe of the present invention; Figure 8 This is a schematic diagram of the rounded corner transition structure of the present invention; Figure 9 This is a schematic diagram of the enhanced heat exchange structure of the present invention; Figure 10 This is a schematic diagram of the structure of the defogging heat exchange packing unit of the present invention; Figure 11 This is a schematic diagram of the distribution structure of the anti-fogging heat exchange chamber shell and packing in this invention; Figure 12 This is a schematic diagram of the structure of the enhanced heat dissipation pipe assembly of the present invention; Figure 13 This is a schematic diagram of the special anti-fogging water distribution grid-type water distribution structure of the present invention. Figure 14 This is a schematic diagram of the special anti-fogging water distribution branch pipe water distribution structure of the present invention; Figure 15 This is a schematic diagram of the flat opening structure of the present invention; Figure 16 This is a schematic diagram of the structure of the duckbill-type flat nozzle of the present invention.

[0052] In the diagram: 1-Reinforced heat exchange structure; 2-Fluid distribution port; 3-Integrated fluid discharge pipe; 4-Continuous bending sealing structure; 5-Concave reinforcing rib; 6-First side bend; 7-Second side bend; 8-First bottom bend; 9-Second bottom bend; 10-Pipe connection; 11-Rounded corner transition structure; 12-Slanted corrugated reinforcement unit; 13-Microstructure reinforcement texture; 15-Reinforced heat dissipation tube assembly; 17-Reinforced heat dissipation tube; 18-Anti-fogging heat exchange chamber shell; 19-Packaging; 20- 21-Grate-type main water inlet pipe; 22-Grate-type branch water distribution pipe; 23-Outlet; 24-Duckbill-type flat nozzle; 25-Flat opening; 26-Branch water distribution pipe; 27-Anti-mist heat exchange packing unit; 28-Dedicated anti-mist water distribution pipeline; 29-High-efficiency heat exchange water distribution pipeline; 30-Water collector; 31-Fan; 32-Outdoor cold air; 33-Circulating cooling water; 34-Humid hot air; 35-Tower body; 36-Dry hot air; 37-Anti-mist water distribution main pipe; 38-Anti-mist water distribution branch pipe Detailed Implementation

[0053] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0054] like Figures 1 to 16 As shown, a dedicated demisting cooling tower for demisting heat exchange packing units includes a tower body 35. Inside the tower body 35 are demisting heat exchange packing units 27. The demisting heat exchange packing units 27 are alternately and sequentially arranged in a demisting heat exchange chamber shell 18 and packing 19. The demisting heat exchange chamber shell 18 is flat, with a fluid distribution port 2 at its upper end connecting to its inner cavity, and a reinforced heat dissipation pipe assembly 15 connected to its lower end. Above the defogging heat exchange packing unit 27, a high-efficiency heat exchange water distribution pipeline 29 and a dedicated defogging water distribution pipeline 28 are arranged side by side from top to bottom. The dedicated defogging water distribution pipeline 28 corresponds to the fluid distribution port 2 of the defogging heat exchange chamber shell 18.

[0055] The defogging heat exchange chamber shell 18 includes a flat chamber shell structure. The opposite side walls of the chamber shell structure are provided with a recessed enhanced heat exchange structure 1. The lower end of the chamber shell structure is fixedly connected to a fluid discharge integrated pipe 3 that is connected to the enhanced heat dissipation pipe assembly 15.

[0056] The cavity shell structure has a continuous bending sealing structure 4 on the opposite side end walls. The continuous bending sealing structure 4 includes two relatively inclined first side bending portions 6. The other ends of the two first side bending portions 6 are fixedly connected to parallel second side bending portions 7. The two second side bending portions 7 are fitted and fixedly connected to each other.

[0057] The fluid discharge integrated pipe 3 includes a drainage channel structure connected to the lower port of the cavity shell structure. Several pipe interfaces 10 that communicate with its inner cavity are fixedly connected in parallel on the drainage channel structure.

[0058] The drainage channel structure includes two downwardly inclined first bottom bends 8, and the other ends of the two first bottom bends 8 are fixedly connected downwards to parallel second bottom bends 9, and the two second bottom bends 9 are fitted and fixed together.

[0059] The continuous bending sealing structure 4 and the fluid discharge integrated pipe 3 are provided with a rounded corner transition structure 11 at the corner of the cavity shell structure.

[0060] The enhanced heat exchange structure 1 includes several oblique corrugated reinforcing units 12 that are distributed in parallel along an oblique direction.

[0061] The cross-sectional shape of the oblique corrugated reinforcement unit 12 is a semi-circular groove.

[0062] The surface of the oblique corrugated reinforcement unit 12 is provided with several semi-circular, elongated microstructure reinforcement textures 13 arranged in parallel along its extension direction.

[0063] Several microstructure reinforcement textures 13 are arranged at equal intervals, and the extension direction of the microstructure reinforcement textures 13 is orthogonal to the extension direction of the oblique corrugated reinforcement unit 12.

[0064] The opposite sidewalls of the cavity shell structure are provided with several vertically arranged concave reinforcing ribs 5, which are located in the central area of ​​the cavity shell structure and near the side edge.

[0065] The cross-section of the concave reinforcing rib 5 is rectangular.

[0066] The injection molding process for the defogging heat exchange chamber shell 18 is to form the defogging heat exchange chamber shell 18 in one step using a precision injection mold.

[0067] The hot pressing process for the defogging heat exchange chamber shell 18 is as follows: the chamber shell molds are prepared by hot pressing, and then the two molds are fixed by bonding or welding to form a complete heat exchange unit.

[0068] The advantages of the two methods are as follows: injection molding offers good overall integrity and excellent sealing; the mold assembly provides strong maintainability and allows for partial replacement. The defogging heat exchange packing unit 27 (one set of defogging heat exchange chamber shell 18 and two sets of high-performance packing 19) can be fixedly connected in the following ways: adhesive connection, hoisting connection, and external fixed frame connection.

[0069] The anti-fogging heat exchange chamber shell 18 can be made of materials such as PVC and PP.

[0070] The enhanced heat pipe assembly 15 includes enhanced heat pipes 17 connected to each pipe connection interface.

[0071] The lower end of the reinforced heat dissipation pipe 17 extends to the water surface of the pool.

[0072] The enhanced heat exchange tube 17 includes one of the following: finned heat exchange tube, smooth heat exchange tube, and corrugated heat exchange tube.

[0073] The enhanced heat exchange tube type 17 can be flexibly selected according to heat exchange requirements and local climate conditions, including but not limited to: ultra-thin finned heat exchange tubes, which improve heat exchange efficiency by increasing the heat exchange surface area and are suitable for working environments with high requirements for heat exchange performance; ultra-thin smooth heat exchange tubes, which achieve a balance between lightweight and high-efficiency heat exchange through optimized tube diameter and wall thickness and are suitable for conventional heat exchange needs; corrugated enhanced heat exchange tubes, which enhance the heat exchange effect by inducing fluid turbulence and improve structural rigidity, and are suitable for environments with vibration; and gradient ultra-thin finned tubes, where the inlet area of ​​the gradient finned tube is sparse to reduce flow resistance, the main body area has gradually denser fin arrangement to enhance heat exchange, and the outlet area optimizes the fin spacing to balance pressure drop and heat exchange, achieving synergistic optimization of airflow distribution and heat exchange efficiency.

[0074] The enhanced heat pipe 17 can be made of the following materials, including but not limited to: aluminum alloy, stainless steel, titanium alloy, metal-based composite material, polymer composite material, ceramic material, PVC material, etc.

[0075] The 28 types of dedicated anti-fogging water distribution pipelines include dedicated anti-fogging water distribution grid-type water distribution structure and dedicated anti-fogging water distribution branch pipe-type water distribution structure.

[0076] The dedicated anti-fogging water distribution grid-type water distribution structure includes an inlet main pipe 20, a water distribution branch pipe 26, and multiple grid-type water distribution units.

[0077] The bar-type water distribution unit includes a bar-type main water inlet pipe 21, and several bar-type water distribution branch pipes 22 corresponding to each anti-fog heat exchange chamber shell 18 are fixedly connected in parallel on the bar-type main water inlet pipe 21. Several water outlets 23 are opened in parallel along its extension direction on the bar-type water distribution branch pipes 22, and each water outlet 23 is provided with a water distribution structure.

[0078] The water distribution branch pipe 26 is vertically connected to the main water inlet pipe 20.

[0079] Each water distribution branch pipe 26 is connected in parallel to several grid-type water inlet main pipes 21.

[0080] The water distribution branch pipe 26 is symmetrically connected to the main water inlet pipe 20.

[0081] A connector for the water distribution branch pipe 26 is fixedly connected to the middle position of the bar-type water inlet main pipe 21.

[0082] The dedicated anti-fogging water distribution branch pipe type water distribution structure includes an anti-fogging water distribution main pipe 37, and several anti-fogging water distribution branch pipes 38 corresponding to the anti-fogging heat exchange chamber shell 18 are fixedly connected in parallel on the anti-fogging water distribution main pipe 37.

[0083] Several water outlets 23 are arranged in parallel along the extension direction of the anti-fog water distribution branch pipe 38, and each water outlet 23 is equipped with a water distribution structure.

[0084] The anti-fogging water distribution branch pipe 38 is vertically connected to the anti-fogging water distribution main pipe 37.

[0085] The water distribution structure includes a duckbill-shaped flat nozzle 24, the extension direction of which is parallel to the extension direction of the grid-type water distribution branch pipe 22 and the anti-fog water distribution branch pipe 37.

[0086] The water distribution structure includes a flat opening 25.

[0087] The opening direction of the flat opening 25 is parallel to the extension direction of the grid-type water distribution branch pipe 22 and the anti-fog water distribution branch pipe 37.

[0088] Several duckbill-shaped flat nozzles are set at equal intervals.

[0089] Several flat openings are set at equal intervals.

[0090] A water collector 30 is installed in the area above the high-efficiency heat exchange water distribution pipeline 29 of the tower body.

[0091] Several nozzles are arranged in parallel along the extension direction at the upper end of the high-efficiency heat exchange water distribution pipeline 29. The nozzles are set upwards, and the nozzles will make the circulating cooling water 33 evenly cover the entire area of ​​the anti-fogging heat exchange packing unit 27 array, providing a reliable guarantee for high-efficiency heat exchange.

[0092] A fan 31 is installed at the top of the tower.

[0093] In non-fogging operation mode, the high-efficiency heat exchange water distribution pipeline 29 is opened, while the dedicated defogging water distribution pipeline 28 is closed. The high-efficiency heat exchange water distribution pipeline 29 system evenly sprays circulating cooling water 33 onto the entire area of ​​the defogging heat exchange packing unit 27 array through its upward spray nozzles. The circulating cooling water 33 flows sequentially through the high-performance packing 19 and the interior of the defogging heat exchange chamber shell 18. Outside cold air 32 enters from the bottom of the tower, flows upward through the defogging heat exchange packing unit 27 array, and fully exchanges heat with the falling circulating cooling water 33 in counter-current contact. During this process, the cold air absorbs heat and transforms into humid hot air 34, which is finally discharged from the tower by the top fan 31 system. At the same time, the circulating cooling water 33, which has completed one heat exchange inside the chamber shell, continues to flow downward and enters the area of ​​the enhanced heat dissipation tube assembly 15. The circulating cooling water 33 in this area undergoes a secondary indirect heat exchange with the cold air 34 entering from the bottom of the tower, further reducing the water temperature. This operating mode significantly improves the system's heat dissipation capacity under high-temperature conditions through a dual enhanced heat exchange mechanism of "contact heat exchange + indirect heat exchange," effectively meeting the extreme heat exchange requirements of the cooling system during the high-temperature period in summer.

[0094] In defogging operation mode, the dedicated defogging water distribution pipeline 28 is opened, while the high-efficiency heat exchange water distribution pipeline 29 is closed. The dedicated defogging water distribution pipeline 28 system adopts a water distribution method that corresponds one-to-one with the defogging heat exchange chamber shells 18, precisely and evenly spraying the circulating cooling water 33 onto the inner wall surface of each defogging heat exchange chamber shell 18, forming a continuous and stable descending water film, constituting the system's "hot channel". Outside cold air 32 enters from the bottom of the tower, flows through the high-performance packing 19 area that works in conjunction with the defogging heat exchange chamber shells 18, and flows upward, forming the system's "cold channel". The circulating water in the hot channel and the air in the cold channel undergo efficient indirect heat exchange through the wall surface of the defogging heat exchange chamber shells 18, achieving heat transfer without mass exchange. This process ensures that the cold air remains dry during its ascent, transforming from dry cold air to dry hot air 36 after heat exchange, and is finally discharged outside the tower through the top fan system 31, completely eliminating the generation of visible fog plumes. After completing one stage of indirect heat exchange, the circulating cooling water 33 continues to flow downwards along the inner wall of the defogging heat exchange chamber shell 18, entering the enhanced heat dissipation tube assembly 15 for a secondary indirect heat exchange. This tiered cooling design significantly enhances the system's cooling capacity, achieving a progressive and deep cooling of the circulating cooling water 33. The cooling water ultimately returns to the storage tank via the bottom of the heat exchange tube assembly. This solution completely eliminates the rain zone structure of traditional cooling towers, not only eliminating the water waste caused by water splashing and water mist entrainment in this area, but also effectively preventing icing due to low winter temperatures, and effectively reducing operating noise, avoiding the formation of plumes that may be caused by direct contact between water and air. Through pure indirect heat exchange, two-stage enhanced cooling, and structural optimization, the system significantly improves the defogging effect while achieving water conservation and a comprehensive improvement in operational reliability.

[0095] The working principle of this device is as follows: This defogging heat exchange system employs a unique modular design concept, organically combining the defogging heat exchange chamber shell 18 with high-performance packing material 19. The configuration ratio of these two components is adjusted to adapt to the climatic characteristics and environmental requirements of different regions. The innovative defogging heat exchange chamber shell 18 structure features a specially reinforced heat dissipation tube assembly 15 at the bottom, extending directly to the water surface area, forming a highly efficient heat exchange system together with the upper defogging heat exchange packing unit 27. The system utilizes an independent water distribution design for both high-efficiency heat exchange and dedicated defogging, allowing for flexible adjustment of the water distribution ratio between the two systems according to seasonal changes and operating conditions to achieve optimal operation. This modular structure retains the high-efficiency heat exchange characteristics while enhancing the defogging effect through the defogging heat exchange chamber shell 18. The entire system employs a relatively simple connection method, making installation and modification processes more convenient and efficient. The high-efficiency heat exchange water distribution pipeline 29 and the dedicated anti-fogging water distribution pipeline 28 adopt dynamic water distribution in different areas and time periods. By optimizing the water flow distribution sequence, the system operating parameters can be precisely controlled. Two sets of water distribution devices with independent functions but coordinated with each other are integrated, including the high-efficiency heat exchange water distribution pipeline 29 and the dedicated anti-fogging water distribution pipeline 28. A composite water distribution structure is specially designed for the anti-fogging heat exchange chamber shell 18. Through innovative water flow organization, the functions of uniform water distribution, anti-fogging optimization and heat exchange enhancement are achieved. In defogging operation mode, the system distributes circulating cooling water 33 evenly to each defogging heat exchange packing unit 27 through a unique dedicated defogging water distribution pipeline 28. Relying on the guiding and distribution function of the defogging heat exchange chamber shell 18, a continuous and stable descending water film forms along the inner wall of the chamber shell. Outside cold air 32 enters from the bottom of the defogging heat exchange packing unit 27, flows through the high-performance packing 19 area that works in conjunction with the defogging heat exchange chamber shell 18, and exchanges heat efficiently with the water film on the inner wall of the defogging heat exchange chamber shell 18 through conduction and convection. This system adopts a hot and cold state partitioning design, achieving complete isolation between the gas and liquid phases, ensuring that the rising air does not carry liquid moisture, fundamentally preventing water evaporation and the formation of visible mist. In addition, after the circulating cooling water 33 completes one heat exchange and defogging in the defogging heat exchange unit, it continues to enter the enhanced heat dissipation tube group 15 for a second heat exchange. The outside cold air 32 and the cooling water in this area that has completed one heat exchange are heat exchanged again through the partition heat exchange method, which further improves the overall heat exchange efficiency and defogging effect of the system. The entire system is based on the principle of heat exchange between gas and liquid phases through the wall, realizing a "heat transfer without mass transfer" defogging mechanism, which completely eliminates the white fog phenomenon. At the same time, it implements a gradual deep cooling of the circulating cooling water 33 through a stepped cooling method. The system also has high operational flexibility and configuration adaptability. The defogging heat exchange unit adopts a modular adjustable layout design. The volume ratio of the defogging heat exchange chamber shell 18 and the high-performance packing 19 can be flexibly adjusted according to different regional climate conditions and environmental protection requirements. The upper end of the cavity shell structure is provided with a fluid distribution port 2 that connects to its inner cavity, which can efficiently and evenly receive cooling water from the external system and achieve stable flow guidance, ensuring that the cooling medium is evenly distributed on the surface of the heat exchange area. The continuous bending sealing structure 4 not only significantly increases the combined contact area, but also effectively improves the stiffness of the connection between adjacent units and the overall structural stability. The fluid discharge integrated pipe 3 includes several parallel pipe interfaces 10 to ensure the consistency of fluid distribution in each branch channel; The fluid discharge integrated pipe 3 features a V-shaped flow guide structure with a pointed bottom, further enhancing the continuous strength and sealing reliability at the interface. This flow guide channel is connected to each pipe interface, enabling efficient collection and even distribution of circulating cooling water 33 to each outlet. The fluid discharge integrated pipe 3 is manufactured using a one-piece molding process, with no assembly seams, good structural integrity, and excellent sealing performance.

[0096] The rounded corner transition structure 11, together with the continuous bending sealing structure 4 and the fluid discharge integrated pipe 3, constitute a continuous and complete sealing boundary. The cavity shell structure adopts a standardized rectangular frame structure, forming a complete and sealed rectangular heat exchange cavity. It has significant modular features, which is conducive to large-scale production and rapid on-site assembly with surrounding components. While effectively controlling the overall manufacturing cost, it greatly improves the maintainability and ease of operation of the equipment. The oblique corrugated reinforcement unit 12 has a consistent radius of curvature and unit spacing, and extends continuously at a specific angle relative to the cavity plane. The circulating cooling water 33 enters the cavity from the fluid distribution port 2 at the top and flows downward along the inner wall. Guided by the oblique corrugated reinforcement unit 12, it spreads downward at a slow and uniform flow rate, and forms a continuous and stable covering water film in the process. The surface is equipped with regularly arranged microstructure reinforcement textures 13. These textures are semi-circular arc-shaped elongated protrusions, arranged with uniform spacing and consistent depth. Their direction is orthogonal to the extension direction of the main corrugation, forming a multi-level composite enhanced heat transfer surface. The microstructure reinforcement textures 13 not only significantly improve the structural strength of the oblique corrugated unit 12 itself, but also effectively increase the actual heat transfer area, prolong the residence time of the cooling water film in the heat transfer area, and promote a more uniform liquid film distribution, thereby significantly improving the overall heat transfer efficiency and demisting performance. To ensure the structural stability of the main heat exchange zone during long-term operation, supporting and reinforcing ribs 5 are provided in the central area of ​​the heat exchange zone and on the inner side of the long side of the frame. The ribs are symmetrically distributed with the center of the heat exchange zone as the reference, and the edge supporting and reinforcing ribs 5 maintain a constant distance from the inner wall of the long side of the frame. These ribs adopt a rectangular cross-section, and their height gradually decreases from the root to the top with a consistent draft angle. Together with the surrounding frame and corrugated unit, they form a high-rigidity overall support system, which can effectively suppress structural deformation caused by water flow impact, temperature alternation and material fatigue, and ensure the long-term stable and reliable operation of the anti-fogging heat exchange chamber shell 18 under complex working conditions. The anti-fogging heat exchange chamber shell 18 and packing 19 are arranged in alternating layers and parallel to each other, with a volume ratio of 1:8. This ratio can be flexibly adjusted according to the climate of the actual application area and the specific heat exchange requirements of the packing 19. Under the premise of ensuring that the system has high-efficiency heat exchange performance and excellent anti-fogging effect, its maximum allowable ratio can be expanded to 1:1. In terms of structural connection, the anti-fogging heat exchange chamber shell 18 and high-performance packing 19 can be reliably fixed in a variety of ways, including but not limited to bonding, hoisting, or using external frame support. The unit is installed in the packing area 19 of the cooling tower. It features flexible assembly, strong adaptability, and convenient maintenance. It can operate stably under different working conditions and effectively achieve the dual functions of water saving and mist elimination. The enhanced heat dissipation pipe assembly 15 is located below the defogging heat exchange packing unit 27 and is connected to the defogging heat exchange chamber shell 18 to further enhance the overall heat dissipation performance of the system. The enhanced heat dissipation pipe assembly 15 is reliably connected to the defogging heat exchange chamber shell 18 through the pipe connection interface 10; The pipe connection 10 can be connected to the demisting heat exchange chamber shell 18 by adhesive bonding, pin connection or other mechanical fastening methods; The reinforced heat dissipation pipe 17 achieves a sealed connection with the pipe interface through various methods such as snap-fit, flange connection, welding or threaded connection, so as to facilitate on-site installation and later maintenance; The enhanced heat dissipation pipe 17 adopts an ultra-thin straight-through structure design, which matches the pipe connection interface size of the anti-fogging heat exchange chamber shell 18. The end of the pipe extends to the horizontal plane of the water tank, forming a stable water flow channel and reducing the turbulence of the water flow. In terms of materials, the reinforced heat pipe 17 can be made of different materials such as aluminum alloy, stainless steel, titanium alloy, metal matrix composite material, polymer composite material, ceramic or PVC according to actual needs, in order to meet multiple requirements such as corrosion resistance, thermal conductivity and economy. The structure of the reinforced heat exchange tube 17 can be flexibly selected according to the actual heat exchange requirements and operating environment: for working conditions with high heat exchange requirements, ultra-thin finned heat exchange tubes can be used to increase the heat transfer area; under normal heat exchange conditions, ultra-thin smooth heat exchange tubes can be selected to improve performance and cost; in situations where there is vibration or thermal expansion and contraction compensation is required, corrugated reinforced heat exchange tubes can be used to improve structural reliability; and for application scenarios with strict requirements for temperature distribution uniformity, gradient ultra-thin finned tubes can be used to achieve more precise heat exchange control. The grid-type water distribution branch pipe 22 or the anti-fog water distribution branch pipe 38 and the anti-fog heat exchange chamber shell 18 are arranged in a one-to-one correspondence and are fixedly installed directly above the fluid distribution opening on the top of each anti-fog heat exchange chamber shell 18 to ensure that each heat exchange unit can obtain independent and uniform water supply. Each grid-type water distribution branch pipe 22 or anti-fog water distribution branch pipe 38 has a duckbill-shaped flat nozzle 24 or a flat opening 25 installed at the outlet 23. When installed, it goes deep into the anti-fog heat exchange chamber shell 18, so that the circulating cooling water 33 forms a directional spraying effect, directly acting on the two side walls of the anti-fog heat exchange chamber shell 18 to form a uniform and stable slow-flowing water film and establish an efficient heat exchange interface. The bar-type water inlet main pipe 21 is connected to the water inlet main pipe 20 through the water distribution branch pipe 26. The system adopts a highly modular configuration. In practical applications, the number of independent bar water distribution units can be flexibly determined according to the specific specifications of the cooling tower and the heat exchange requirements. Each independent water distribution unit can cover 30 to 50 or even more demisting heat exchange units, demonstrating good engineering adaptability and scalability.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention 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 the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A dedicated demisting cooling tower for demisting heat exchange packing units, characterized in that: The tower body (35) includes a defogging heat exchange packing unit (27) inside the tower body (35). The defogging heat exchange packing unit (27) consists of alternating defogging heat exchange chamber shells (18) and packing (19). The defogging heat exchange chamber shell (18) is flat. The upper end of the defogging heat exchange chamber shell (18) is provided with a fluid distribution port (2) that connects to its inner cavity. The lower end of the defogging heat exchange chamber shell (18) is fixedly connected with a reinforced heat dissipation tube assembly (15) that connects to its inner cavity. The anti-fogging heat exchange packing unit (27) is provided with a high-efficiency heat exchange water distribution pipeline (29) and a dedicated anti-fogging water distribution pipeline (28) arranged side by side from top to bottom. The dedicated anti-fogging water distribution pipeline (28) corresponds to the fluid distribution port (2) of the anti-fogging heat exchange chamber shell (18).

2. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 1, characterized in that: The defogging heat exchange chamber shell (18) includes a flat chamber shell structure. The opposite side walls of the chamber shell structure are provided with a concave enhanced heat exchange structure (1). The lower end of the chamber shell structure is fixedly connected to a fluid discharge integrated pipe (3) connected to the enhanced heat dissipation tube group (15).

3. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 2, characterized in that: The fluid discharge integrated pipe (3) includes a drainage channel structure connected to the lower port of the cavity shell structure, and a number of pipe interfaces (10) communicating with its inner cavity are fixedly connected in parallel on the structure of the drainage channel.

4. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 2, characterized in that: The enhanced heat exchange structure (1) includes several oblique corrugated reinforcement units (12) distributed in parallel along the oblique direction.

5. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 4, characterized in that: The surface of the oblique corrugated reinforcement unit (12) is provided with several semi-circular arc-shaped elongated microstructure reinforcement textures (13) arranged in parallel along its extension direction.

6. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 3, characterized in that: The enhanced heat dissipation tube assembly (15) includes an enhanced heat dissipation tube (17) connected to each of the tube interfaces.

7. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 6, characterized in that: The lower end of the enhanced heat dissipation pipe (17) extends to the water surface of the pool.

8. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 1, characterized in that: The special anti-fog water distribution pipeline (28) includes a special anti-fog water distribution grid-type water distribution structure and a special anti-fog water distribution branch pipe-type water distribution structure.

9. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 8, characterized in that: The dedicated anti-fogging water distribution grid-type water distribution structure includes multiple grid-type water distribution units. Each grid-type water distribution unit includes a grid-type main water inlet pipe (21). Several grid-type water distribution branch pipes (22) corresponding to each anti-fogging heat exchange chamber shell are fixedly connected in parallel on the grid-type main water inlet pipe (21). Several water outlets (23) are opened in parallel along its extension direction on the grid-type water distribution branch pipes (22). Each water outlet (23) is provided with a water distribution structure.

10. The dedicated demisting cooling tower for demisting heat exchange packing unit according to claim 8, characterized in that: The dedicated anti-fogging water distribution branch pipe type water distribution structure includes an anti-fogging water distribution main pipe (37), and several anti-fogging water distribution branch pipes (38) corresponding to each row of anti-fogging heat exchange chamber shells are fixedly connected to the anti-fogging water distribution main pipe (37). Several water outlets (23) are arranged in parallel along its extension direction on the anti-fogging water distribution branch pipes (38), and each water outlet (23) is provided with a water distribution structure.

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