A vdf cooling tower

Abstract

This utility model relates to the field of chemical equipment technology and discloses a VDF cooling tower, including a support frame, support feet, a fixing frame, a fixing structure, and a cooling assembly. The support frame has support feet with rubber anti-slip pads at the bottom and through holes and a fixing frame at the top. The fixing structure includes a fixing plate and an arc-shaped cooling tank fixing clamp. The cooling assembly consists of an air inlet structure, a cooling structure, an air outlet structure, and a condenser tube fixing structure. In the cooling structure, a coolant inlet tank is provided at the lower end of the outer side of the cooling tank, and a coolant outlet tank is provided at the upper end in a symmetrical pattern. There are condenser tubes distributed equidistantly around the circumference inside, which are fixed by a top plate and a bottom plate. Both the air inlet and the air outlet are L-shaped, and a sealing gasket is provided at the connecting flange. There is a condensate drain outlet at the bottom of the air inlet flange. The heat exchange efficiency is improved through a circulating cooling system and multiple sets of condenser tubes. Multiple seals prevent leakage and pollution. The stable structure ensures reliable operation. It is suitable for cooling high-temperature materials in VDF production.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically a VDF cooling tower. Background Technology

[0002] Vinylidene fluoride (VDF) is a key monomer in the chemical industry for the production of fluoropolymers. During its preparation and subsequent processing, related materials (such as reaction mixtures and pyrolysis gases) are often in a high-temperature state due to exothermic reactions or process characteristics. This high-temperature environment can interfere with the efficiency of subsequent separation and purification, and may even change the chemical properties of the materials, leading to safety risks. Therefore, specialized cooling equipment is needed to regulate the temperature of VDF-related materials to ensure the stability and safety of the production process.

[0003] Traditional cooling technologies have significant limitations when processing VDF-related materials. Single cooling methods are easily affected by external conditions, leading to unstable cooling efficiency. At the same time, some cooling methods may cause material leakage or impurities due to insufficient sealing performance or structural design defects, affecting product purity. These problems not only increase production energy consumption and costs, but may also interfere with the continuity of subsequent processes due to poor cooling effect, potentially affecting the quality of the final product. To address these issues, we propose a VDF cooling tower. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a VDF cooling tower that solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a VDF cooling tower, comprising: The support frame, support legs, and fixing frames are provided. The support legs are fixedly connected to the bottom of the support frame, and the fixing frames are fixedly installed on the top of the support frame. The fixing frames are distributed symmetrically on the top of the support frame. A fixing structure is disposed between the fixing brackets, the fixing structure being between the inner sides of the facing through holes; The cooling assembly is located inside the fixed frame. The cooling assembly includes an air inlet structure, a cooling structure, an air outlet structure, and a fixing structure. The air inlet structure is located at the top of the cooling structure, the air outlet structure is located at the bottom of the cooling structure, and the fixing structure is located inside the cooling structure.

[0006] Preferably, the support frame has support feet with rubber anti-slip pads fixedly installed at the four corners of the bottom, the support frame has a through hole in the center of the top, and the support frame has vertical poles at the four corners of the top.

[0007] Preferably, the fixing structure includes a fixing plate and a cooling tank fixing clamp. A set of fixing plates distributed symmetrically on one side of the fixing frame are fixedly installed, and the cooling tank fixing clamp is fixedly installed on the other side of the fixing plate. Both sides of the cooling tank fixing clamp are fixedly connected to the side of the fixing plate, and the middle part of the cooling tank fixing clamp is arc-shaped.

[0008] Preferably, the cooling structure includes a cooling tank, a coolant inlet tank, and a coolant outlet tank. The outer surface of the cooling tank is fixedly connected to the inner arc of the cooling tank fixing clamp. The coolant inlet tank is fixedly installed at the lower end of the outer surface of the cooling tank, and the coolant outlet tank is fixedly installed at the upper end of the outer surface of the cooling tank. The coolant inlet tank and the coolant outlet tank are symmetrical about the origin.

[0009] Preferably, the air intake structure includes an air inlet connecting flange, an air inlet, and a condensate drain outlet. The air inlet connecting flange is fixedly connected to the top of the cooling tank. An L-shaped air inlet is fixedly connected to the top of the air inlet connecting flange. The connection between the air inlet connecting flange and the cooling tank is sealed internally by a sealing gasket. A set of condensate drain outlets distributed symmetrically are fixedly installed on the bottom side of the air inlet connecting flange.

[0010] Preferably, the fixing structure includes a condenser pipe fixing top plate, a condenser pipe fixing bottom plate, and condenser pipes. The condenser pipe fixing top plate is fixedly installed on the top of the inner surface of the cooling tank, and the condenser pipe fixing bottom plate is fixedly installed on the bottom of the inner surface of the cooling tank. The condenser pipe fixing top plate and the condenser pipe fixing bottom plate are flush with the upper and lower end faces of the cooling tank. Multiple sets of condenser pipes distributed equidistantly in a circle are fixedly installed between the condenser pipe fixing top plate and the condenser pipe fixing bottom plate. The top of the condenser pipes is connected to the interior of the air inlet connecting flange.

[0011] Preferably, the air outlet structure includes an air outlet connecting flange and an air outlet. The bottom of the cooling tank is fixedly connected to the air outlet connecting flange, and the bottom of the air outlet connecting flange is fixedly connected to an L-shaped air outlet. The connection between the air outlet connecting flange and the air outlet and the cooling tank is sealed by a sealing gasket.

[0012] Compared with the prior art, this utility model provides a VDF cooling tower, which has the following beneficial effects: 1. This VDF cooling tower utilizes a circulating cooling system formed by a coolant inlet tank at the lower end and a coolant outlet tank at the upper end of the cooling tank. Combined with multiple sets of circumferentially spaced condenser tubes inside, it increases the contact area with high-temperature materials. Simultaneously, the coolant flow direction from the lower end to the upper end ensures efficient heat absorption, avoiding the limitations of traditional single-cooling methods. It can maintain a stable and efficient cooling effect under different environmental conditions, significantly shortening material cooling time and improving production continuity. The connections between the inlet flange and the cooling tank, and between the outlet flange and the outlet and the cooling tank, are all sealed with gaskets, effectively preventing external impurities from entering and preventing leakage of VDF-related materials. Support feet with rubber anti-slip pads are installed at the bottom of the support frame, enhancing overall stability and preventing displacement due to vibration during operation. The cooling tank is securely connected to the frame via arc-shaped cooling tank fixing clamps and plates, ensuring structural stability during operation. Furthermore, the condensate drain outlet facilitates timely drainage of condensate, reducing the impact of internal liquid accumulation on the cooling effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the air inlet connection flange of this utility model; Figure 3 This is a schematic diagram of the condenser tube of this utility model; Figure 4 This is a schematic diagram of the top plate for fixing the condenser tube of this utility model.

[0014] In the diagram: 1. Support frame; 2. Support leg; 3. Through hole; 4. Fixing frame; 5. Fixing plate; 6. Cooling tank fixing clamp; 7. Cooling tank; 8. Coolant inlet tank; 9. Coolant outlet tank; 10. Air inlet connecting flange; 11. Air inlet; 12. Condensate drain outlet; 13. Condensate pipe fixing top plate; 14. Condensate pipe fixing bottom plate; 15. Condensate pipe; 16. Air outlet connecting flange; 17. Air outlet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 A VDF cooling tower, comprising: The support frame 1, the support leg 2, and the fixing frame 4 are provided. The support leg 2 is fixedly connected to the bottom of the support frame 1, and the fixing frame 4 is fixedly installed on the top of the support frame 1. The fixing frames 4 are symmetrically distributed on the top of the support frame 1. The fixing structure is provided between the fixing brackets 4, and the fixing structure is between the inner sides of the through holes 3 facing each other; The cooling assembly is located inside the mounting frame 4. The cooling assembly includes an air intake structure, a cooling structure, an air outlet structure, and a fixing structure. The air intake structure is located at the top of the cooling structure, the air outlet structure is located at the bottom of the cooling structure, and the fixing structure is located inside the cooling structure.

[0017] Furthermore, support feet 2 with rubber anti-slip pads are fixedly installed at the four corners of the bottom of the support frame 1. A through hole 3 is opened in the center of the top of the support frame 1. There are vertical uprights at the four corners of the top of the support frame 1. The support feet 2 at the four corners of the bottom of the support frame 1 not only enhance the overall stability with rubber anti-slip pads, but their height design also allows the fixed frame 4 and cooling components at the top of the support frame 1 to be at a suitable operating height, which is convenient for staff to carry out daily inspection and maintenance of components such as cooling tank 7, air inlet 11, and air outlet 17. The through hole 3 in the center of the top of the support frame 1 provides space for the air outlet 17 and related pipelines to avoid structural interference affecting the assembly and operation of the device. The frame structure formed by the four vertical uprights at the top provides a stable installation foundation for the fixed frame 4, ensuring that the fixed frame is not easily deformed when bearing the weight of the cooling components.

[0018] Furthermore, the fixing structure includes a fixing plate 5 and a cooling tank fixing clamp 6. A set of fixing plates 5 distributed symmetrically are fixedly installed on the side of the fixing frame 4. The cooling tank fixing clamp 6 is fixedly installed on the other side of the fixing plate 5. Both sides of the cooling tank fixing clamp 6 are fixedly connected to the side of the fixing plate 5. The middle part of the cooling tank fixing clamp 6 is arc-shaped. The fixing structure composed of the fixing plate 5 and the cooling tank fixing clamp 6, through the rigid connection between the fixing plate 5 and the fixing frame 4, evenly transfers the weight of the cooling tank 7 to the fixing frame 4, and then the fixing frame 4 distributes it to the support frame 1. This avoids local stress concentration caused by the weight of the cooling tank 7 or the impact of internal materials. The arc-shaped design in the middle of the cooling tank fixing clamp 6 fits perfectly with the outer surface of the cooling tank 7, increasing the contact area, which not only improves the fixing strength, but also reduces vibration transmission when the cooling tank 7 is working. At the same time, this symmetrical distribution fixing method ensures the horizontal balance of the cooling tank 7 and prevents it from tilting due to uneven force.

[0019] Furthermore, the cooling structure includes a cooling tank 7, a coolant inlet tank 8, and a coolant outlet tank 9. The outer surface of the cooling tank 7 is fixedly connected to the inner arc of the cooling tank fixing clamp 6. The coolant inlet tank 8 is fixedly installed at the lower end of the outer surface of the cooling tank 7, and the coolant outlet tank 9 is fixedly installed at the upper end of the outer surface of the cooling tank 7. The coolant inlet tank 8 and the coolant outlet tank 9 are symmetrical about the origin. In addition to forming a coolant flow path from bottom to top, the symmetrical distribution of the coolant inlet tank 8 and the coolant outlet tank 9 also allows the coolant to be evenly distributed in the annular space between the cooling tank 7 and the condenser tube 15, avoiding local coolant stagnation. The size design of the inlet tank and the outlet tank is adapted to common coolant delivery pipelines, which facilitates quick docking with the external circulation system. Moreover, the positional distribution of the two tanks forms a complete coolant circulation loop inside the cooling tank 7, ensuring that each condenser tube 15 can be fully wrapped in coolant, thereby improving the overall heat exchange efficiency.

[0020] Furthermore, the air intake structure includes an air inlet connecting flange 10, an air inlet 11, and a condensate drain outlet 12. The air inlet connecting flange 10 is fixedly connected to the top of the cooling tank 7, and an L-shaped air inlet 11 is fixedly connected to the top of the air inlet connecting flange 10. The connection between the air inlet connecting flange 10 and the cooling tank 7 is sealed internally by a sealing gasket. A set of axially symmetrically distributed condensate drain outlets 12 are fixedly installed on the bottom side of the air inlet connecting flange 10. The L-shaped design of the air inlet 11 not only facilitates connection with external air supply pipelines and reduces resistance caused by pipeline bends, but also allows high-temperature materials to enter the air inlet connecting flange 10 in a more stable state. The axially symmetrical distribution of the condensate drain outlets 12 ensures that condensate can be discharged in a timely manner from different directions, avoiding backflow of condensate into the air inlet 11 or the cooling tank 7 due to untimely drainage on one side. At the same time, its location on the bottom side of the air inlet connecting flange 10 allows for natural drainage by gravity, eliminating the need for additional power devices and reducing equipment energy consumption.

[0021] Furthermore, the fixing structure includes a condenser pipe fixing top plate 13, a condenser pipe fixing bottom plate 14, and condenser pipes 15. The condenser pipe fixing top plate 13 is fixedly installed on the top of the inner surface of the cooling tank 7, and the condenser pipe fixing bottom plate 14 is fixedly installed on the bottom of the inner surface of the cooling tank 7. The condenser pipe fixing top plate 13 and the condenser pipe fixing bottom plate 14 are flush with the upper and lower end faces of the cooling tank 7. Multiple sets of condenser pipes 15 are fixedly installed between the condenser pipe fixing top plate 13 and the condenser pipe fixing bottom plate 14, and are distributed circumferentially at equal intervals. The top of the condenser pipes 15 is connected to the interior of the air inlet connecting flange 10. In addition to fixing the condenser tubes 15, the base plate 14 of the condenser tube fixing plate 13 is designed to be flush with the upper and lower end faces of the cooling tank 7, so that the interior of the cooling tank 7 forms a closed heat exchange space, reducing the heat exchange between the coolant and the outside. The multiple sets of condenser tubes 15 distributed circumferentially at equal intervals not only increase the heat exchange area, but their arrangement also causes the coolant to form turbulence during the flow process, which enhances the scouring effect on the surface of the condenser tubes 15 and reduces scale deposition. At the same time, the independent channel design of each condenser tube 15 ensures that the material is evenly distributed when flowing in the tube, avoiding insufficient cooling due to excessive local material flow rate.

[0022] Furthermore, the air outlet structure includes an air outlet connecting flange 16 and an air outlet 17. The bottom of the cooling tank 7 is fixedly connected to the air outlet connecting flange 16, and the bottom of the air outlet connecting flange 16 is fixedly connected to the L-shaped air outlet 17. The connection between the air outlet connecting flange 16, the air outlet 17, and the cooling tank 7 is sealed with a gasket. The L-shaped design of the air outlet 17 corresponds to the air inlet 11, allowing the cooled material to be discharged at a gentle angle, reducing pipeline wear. The multiple sealing design of the air outlet connecting flange 16, the air outlet 17, and the cooling tank 7 not only prevents material leakage but also prevents outside air from entering the cooling tank 7, avoiding the reaction between impurities in the air and the cooled VDF material. The flange connection method facilitates quick disassembly of the air outlet 17 for internal cleaning or replacement when needed, improving the maintenance convenience of the equipment while ensuring the structural strength of the connection parts, which can withstand a certain material pressure.

[0023] Structural Description: Support frame 1: Support frame 1 is the basic support structure of VDF cooling tower. It has support feet with rubber anti-slip pads at the four corners of the bottom, a through hole in the center of the top, and vertical poles at the four corners, providing a stable installation base for the fixed frame and bearing the overall weight. Support feet 2: Support feet 2 are installed at the four corners of the bottom of the support frame. The bottom is equipped with rubber anti-slip pads to enhance the stability of the device and prevent vibration displacement. Their height keeps the upper components at a suitable operating height for easy maintenance. Through hole 3: Through hole 3 is opened in the center of the top of the support frame to provide space for the air outlet and related pipelines, avoid structural interference, and ensure smooth assembly and operation of the device; Fixing frame 4: Fixing frame 4 is fixed to the top of the support frame and is distributed symmetrically on the axis. It is used to install the fixing plate and cooling components, distribute the weight of the cooling tank to the support frame, and enhance the overall structural stability. Fixing plate 5: The fixing plate 5 is symmetrically distributed on the side of the fixing frame, and the other side is connected to the cooling tank fixing clamp. The weight of the cooling tank is transferred through rigid connection to avoid local stress concentration and ensure the balance of the cooling tank. Cooling tank fixing clip 6: The cooling tank fixing clip 6 has fixing plates on both sides and an arc shape in the middle. It fits against the outside of the cooling tank, increases the contact area, enhances the fixing strength, reduces vibration transmission, and fixes the cooling tank. Cooling tank 7: Cooling tank 7 is the core structure for cooling. It is connected to the fixing clamp on the outside and is equipped with condenser tubes inside. Water inlet and outlet tanks are set at the upper and lower ends of the outside to form a cooling space and realize heat exchange between the material and the coolant. Coolant inlet tank 8: Coolant inlet tank 8 is located at the lower end of the outside of the cooling tank, symmetrical to the origin of the outlet tank. It is used to introduce coolant so that it flows from bottom to top in the tank and fully absorbs heat. Coolant outlet tank 9: Coolant outlet tank 9 is located on the upper part of the outside of the cooling tank, symmetrical to the origin of the inlet tank. It is used to discharge the coolant after heat absorption, forming a circulation to ensure continuous and efficient cooling. Air inlet connecting flange 10: Air inlet connecting flange 10 connects the top of the cooling tank to the air inlet. The connection is sealed with a gasket to prevent material leakage. A condensate drain outlet is installed on the bottom side, and the air inlet is connected to the top. Inlet 11: Inlet 11 is L-shaped and connected to the top of the inlet connecting flange, which facilitates connection with external gas pipelines, reduces resistance, and allows high-temperature materials to enter the cooling tank smoothly. Condensate drain outlet 12: The condensate drain outlet 12 is symmetrically distributed on the bottom side of the air inlet connecting flange, and uses gravity to discharge condensate in time, avoiding stagnation that would affect the cooling effect. Condenser tube fixing top plate 13: The condenser tube fixing top plate 13 is installed at the top of the cooling tank and is flush with the upper end face of the cooling tank. It is used to fix the top of the condenser tube, forming a closed heat exchange space and reducing heat exchange. Condenser tube fixing base plate 14: The condenser tube fixing base plate 14 is installed at the bottom of the cooling tank and is flush with the lower end face of the cooling tank. It works with the top plate to fix the bottom of the condenser tube and ensures that the condenser tube is stably arranged. Condenser 15: Multiple sets of condenser 15 are circumferentially distributed between the top plate and the bottom plate. The top is connected to the air inlet flange to increase the contact area with the material, so that the material can fully exchange heat with the coolant inside the tube. Outlet connection flange 16: Outlet connection flange 16 connects the bottom of the cooling tank to the outlet. The connection is sealed with a gasket to prevent material leakage and contamination and to ensure the purity of the material. Outlet 17: Outlet 17 is L-shaped and connected to the bottom of the outlet flange for easy connection to external pipelines, allowing cooled materials to be discharged smoothly and reducing pipeline wear. Working Principle: The high-temperature VDF material to be cooled enters through the L-shaped air inlet 11 and then through the air inlet connecting flange 10 into the cooling tank 7. The connection between the air inlet connecting flange 10 and the cooling tank 7 is sealed with a gasket to prevent material leakage. After entering, the material flows into multiple sets of circumferentially equidistant condenser tubes 15 between the condenser tube fixing top plate 13 and the condenser tube fixing bottom plate 14. These condenser tubes 15 increase the contact area between the material and the cooling medium, laying the foundation for efficient cooling. At the same time, the coolant enters from the coolant inlet trough 8 at the lower end of the outer surface of the cooling tank 7 into the space between the cooling tank 7 and the condenser tubes 15. Since the coolant inlet trough 8 and the coolant outlet trough 9 are symmetrical at the origin and the coolant outlet trough 9 is located at the upper end of the outer surface of the cooling tank 7, the coolant can form a bottom-up flow in the cooling tank 7, forming a reverse heat exchange with the high-temperature material flowing from top to bottom in the condenser tubes 15, maximizing the absorption of heat from the material and improving cooling efficiency. During the cooling process, the water vapor in the high-temperature material condenses into liquid water. This condensate collects at the condensate drain 12 on the bottom side of the inlet flange 10 and is discharged in time to prevent condensate from accumulating and affecting the cooling effect. The cooled material flows out from the condenser pipe 15, enters the L-shaped outlet 17 through the outlet flange 16 at the bottom of the cooling tank 7, and is finally discharged from the cooling tank 7. The connection between the outlet flange 16, the outlet 17, and the cooling tank 7 is sealed with a gasket to further ensure that the material does not leak and is not contaminated by the outside. In addition, the cooling tank 7 is firmly connected to the fixing frame 4 through the cooling tank fixing clamp 6 and the fixing plate 5. The fixing frame 4 is installed on the top of the support frame 1. The support feet 2 at the four corners of the bottom of the support frame 1 are equipped with rubber anti-slip pads, which can effectively enhance the stability of the overall device, prevent the device from shifting due to vibration during operation, and ensure the stability of the linkage of various components, thereby ensuring that the cooling process is continuous and stable.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A VDF cooling tower, characterized in that, include: The support frame (1), support feet (2) and fixing frame (4) are provided. The support feet (2) are fixedly connected to the bottom of the support frame (1), and the fixing frame (4) is fixedly installed on the top of the support frame (1). The fixing frame (4) is symmetrically distributed on the top of the support frame (1). The fixing structure is provided between the fixing brackets (4), and the fixing structure is between the inner sides of the through holes (3) facing each other; The cooling assembly is located inside the fixed frame (4). The cooling assembly includes an air inlet structure, a cooling structure, an air outlet structure and a fixing structure. The air inlet structure is located at the top of the cooling structure, the air outlet structure is located at the bottom of the cooling structure, and the fixing structure is located inside the cooling structure.

2. The VDF cooling tower according to claim 1, characterized in that, The support frame (1) has four fixed support feet (2) with rubber anti-slip pads at the bottom corners. The support frame (1) has a through hole (3) at the top center. The support frame (1) has four vertical poles at the top corners.

3. The VDF cooling tower according to claim 1, characterized in that, The fixing structure includes a fixing plate (5) and a cooling tank fixing clamp (6). A set of fixing plates (5) distributed symmetrically are fixedly installed on the side of the fixing frame (4). The cooling tank fixing clamp (6) is fixedly installed on the other side of the fixing plate (5). Both sides of the cooling tank fixing clamp (6) are fixedly connected to the side of the fixing plate (5). The middle part of the cooling tank fixing clamp (6) is arc-shaped.

4. A VDF cooling tower according to claim 3, characterized in that, The cooling structure includes a cooling tank (7), a coolant inlet tank (8), and a coolant outlet tank (9). The outer surface of the cooling tank (7) is fixedly connected to the inner arc of the cooling tank fixing clamp (6). The coolant inlet tank (8) is fixedly installed at the lower end of the outer surface of the cooling tank (7), and the coolant outlet tank (9) is fixedly installed at the upper end of the outer surface of the cooling tank (7). The coolant inlet tank (8) and the coolant outlet tank (9) are symmetrical about the origin.

5. A VDF cooling tower according to claim 4, characterized in that, The air intake structure includes an air inlet connecting flange (10), an air inlet (11), and a condensate drain outlet (12). The top of the cooling tank (7) is fixedly connected to the air inlet connecting flange (10), and the top of the air inlet connecting flange (10) is fixedly connected to an L-shaped air inlet (11). The connection between the air inlet connecting flange (10) and the cooling tank (7) is sealed with a gasket. A set of condensate drain outlets (12) that are symmetrically distributed are fixedly installed on the bottom side of the air inlet connecting flange (10).

6. A VDF cooling tower according to claim 5, characterized in that, The fixing structure includes a condenser tube fixing top plate (13), a condenser tube fixing bottom plate (14), and condenser tubes (15). The condenser tube fixing top plate (13) is fixedly installed on the top of the inner surface of the cooling tank (7), and the condenser tube fixing bottom plate (14) is fixedly installed on the bottom of the inner surface of the cooling tank (7). The condenser tube fixing top plate (13) and the condenser tube fixing bottom plate (14) are flush with the upper and lower end faces of the cooling tank (7). Multiple sets of condenser tubes (15) are fixedly installed between the condenser tube fixing top plate (13) and the condenser tube fixing bottom plate (14) in a circumferentially equidistant manner. The top of the condenser tubes (15) is connected to the interior of the air inlet connecting flange (10).

7. A VDF cooling tower according to claim 4, characterized in that, The air outlet structure includes an air outlet connecting flange (16) and an air outlet (17). The bottom of the cooling tank (7) is fixedly connected to the air outlet connecting flange (16), and the bottom of the air outlet connecting flange (16) is fixedly connected to the L-shaped air outlet (17). The connection between the air outlet connecting flange (16), the air outlet (17), and the cooling tank (7) is sealed by a sealing gasket.

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