Anti-icing fog dispersal type cooling tower

Abstract

The utility model discloses an anti-icing fog dispersal type cooling tower, which belongs to the technical field of cooling towers, and comprises a tower body, a dividing wall type heat exchanger is arranged in the tower body, the dividing wall type heat exchanger comprises a plurality of heat exchange units which are of rhombic structures and are arranged in sequence, and each heat exchange unit is provided with a damp and hot channel and a dry and cold channel which are mutually independent. The device is characterized in that a water collecting tank is installed at the bottom of each heat exchange unit, a partition plate is vertically installed at the bottom of each water collecting tank, the partition plate divides the area, located below the dividing wall type heat exchanger, in the tower body into a humid and hot area and a dry and cold area which are arranged in a staggered mode, the humid and hot areas are communicated with an inlet of a humid and hot channel, and the dry and cold areas are communicated with an inlet of a dry and cold channel. A water drainage hole is formed in the water collecting tank and connected with a water collecting pipe, and the water collecting pipe is located in the humid and hot area. According to the cooling tower disclosed by the utility model, the water collecting tank at the bottom of the heat exchange unit can be used for collecting condensate water, so that the condition that the condensate water flows onto the partition plate and is frozen is avoided, and the normal work of the cooling tower is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, and particularly to an anti-icing and fog-eliminating cooling tower. Background Art

[0002] A cooling tower is a cooling device that reduces the temperature of circulating water through heat exchange after circulating spray water contacts flowing air, and it has been widely used in various industries. The humid and hot air at the outlet of the cooling tower condenses into water after floating out in the cold season, causing the cooling tower to emit "white fog", which is likely to cause adverse effects such as icing on the road surface near the cooling tower. To solve this problem, cooling towers that can eliminate white fog have gradually emerged on the market.

[0003] The applicant applied for a utility model patent on April 22, 2021 (publication number CN215524263U), which discloses a water-saving and fog-eliminating natural ventilation cooling tower, including a tower body. A partition heat exchanger is installed inside the tower body. The space below the partition heat exchanger in the tower body is sequentially formed with a spray area and a packing area communicating with each other from top to bottom. The spray area and the packing area are separated by a partition board into an independent dry-cooling area and a humid-heat area. A water distribution pipe is installed in the spray area, and packing located below the water distribution pipe is installed in the packing area. Nozzles are installed on the water distribution pipe. A high-level water collection device is arranged below the packing area, and the area below the high-level water collection device is an air inlet area communicating with the outside. A ventilation chimney is arranged at the top of the tower body. The partition heat exchanger is internally partitioned into independent dry-cooling channels and humid-heat channels. The two ends of the dry-cooling channel are respectively communicated with the dry-cooling area and the ventilation chimney, and the two ends of the humid-heat channel are respectively communicated with the humid-heat area and the ventilation chimney. The high-level water collection device is provided with a water collection plate, and the lower end of the water collection plate is connected with a water collection tank. The space on one side of the water collection plate is communicated with the dry-cooling area, and the space on the other side of the water collection plate is communicated with the humid-heat area. By setting the partition heat exchanger, the humid and saturated air is condensed, and the dry cold air is heated. Finally, the air leaving the tower becomes unsaturated, achieving the purpose of water saving and also playing a role in fog elimination. The dry-cooling area and the humid-heat area are separated from each other, ensuring that cold and hot air will not mix in the spray area. And by setting the high-level water collection device, high-level water collection is realized, avoiding the contact between the upward-flowing dry cold air and hot water, and realizing the functions of water saving and fog elimination.

[0004] However, during actual use, users have found that especially when used in cold seasons, since the top of the partition is connected to the bottom of the diamond-shaped partition heat exchanger, when the humid and hot air passing upward through the humid and hot channel exchanges heat with the dry and cold air in the dry and cold channel, some condensed water will flow along the edge of the partition heat exchanger to the bottom of the partition heat exchanger, and then flow downward along the partition. Since one side space of the partition is for the entry of dry and cold air and the temperature of the partition is very low, the condensed water on the partition will freeze. As the cooling tower continues to operate, the icing situation becomes more serious, the weight of the partition increases continuously, and there is a risk that the partition will fall off due to excessive weight, which affects the normal operation of the cooling tower and also increases the trouble for users to remove the ice. Summary of the Utility Model

[0005] The technical problem to be solved by the present utility model is that in the prior art, the condensed water flowing down through the partition heat exchanger will flow onto the partition, increasing the load of the partition after icing and prone to falling off risks. Based on this, the present utility model provides a fog-eliminating cooling tower that can prevent the partition from icing.

[0006] The technical solution adopted by the present utility model to solve its technical problems is: an anti-icing and fog-eliminating cooling tower, including a tower body. A partition heat exchanger is provided inside the tower body. The partition heat exchanger includes a plurality of heat exchange units arranged in a diamond structure and arranged in sequence. Each heat exchange unit has an independent humid and hot channel and a dry and cold channel. A water collecting tank is installed at the bottom of each heat exchange unit. A partition is vertically installed at the bottom of each water collecting tank. The partition divides the area below the partition heat exchanger inside the tower body into a humid and hot area and a dry and cold area arranged staggeredly. The humid and hot area is communicated with the inlet of the humid and hot channel, and the dry and cold area is communicated with the inlet of the dry and cold channel. A drain hole is opened on the water collecting tank, and a water collecting pipe is connected to the drain hole. The water collecting pipe is located in the humid and hot area.

[0007] Further, the water collecting tank includes a bottom flat plate and inclined plates fixedly connected to opposite sides of the bottom flat plate. The two inclined plates are respectively fixedly connected to both sides of the bottom of the heat exchange unit.

[0008] Further, the drain hole is opened on the inclined plate located in the humid and hot area.

[0009] Further, the partition is arranged directly below the bottom flat plate.

[0010] Further, the water collecting tank is horizontally arranged, and a plurality of the water collecting pipes are connected to one side of the water collecting tank along the length direction of the water collecting tank.

[0011] Further, the water collecting tank is inclined, and the water collecting pipe is connected to the lower part of the water collecting tank.

[0012] Further, a crossbeam is installed inside the tower body. The crossbeam is horizontally arranged. The bottom of the water collecting tank is fixedly installed on the crossbeam, and the upper end of the partition plate is fixedly connected to the crossbeam.

[0013] Further, a T-shaped fixing frame is fixedly connected between every two adjacent heat exchange units. The lower end of the T-shaped fixing frame is fixedly connected to the crossbeam.

[0014] Further, a wind cylinder is fixedly installed at the top of the tower body, and a fan is installed inside the wind cylinder.

[0015] The beneficial effects of the present utility model are as follows: In the anti-icing and fog-eliminating cooling tower of the present utility model, a water collecting tank is installed at the bottom of the heat exchange unit. When dry cold air and humid hot air undergo heat exchange in the shell-and-tube heat exchanger, the generated condensed water will flow downward along the side wall on the side of the humid heat channel inlet of the heat exchange unit, and then enter the water collecting tank. Finally, it flows into the water collecting pipe through the drain hole, and then flows into the bottom of the tower body through the water collecting pipe, effectively preventing the condensed water from flowing onto the partition plate, thus avoiding the freezing of the condensed water on the partition plate and eliminating the hidden danger of the partition plate falling off due to excessive load caused by the freezing of the condensed water, ensuring the normal operation of the cooling tower. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of the anti-icing and fog-eliminating cooling tower of the present utility model;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in the shown anti-icing and fog-eliminating cooling tower.

[0019] In the figure: 1. Tower body, 11. Humid heat area, 12. Dry cold area, 13. Crossbeam, 2. Shell-and-tube heat exchanger, 21. Heat exchange unit, 211. Humid heat channel, 212. Dry cold channel, 3. Water collecting tank, 31. Bottom flat plate, 32. Inclined plate, 33. Drain hole, 4. Partition plate, 5. Fixing frame, 6. Wind cylinder, 7. Fan, 8. Water collecting pipe. Detailed Embodiments

[0020] The present utility model will now be described in detail in conjunction with the drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the present utility model in a schematic manner, so it only shows the components related to the present utility model.

[0021] Please refer to Figure 1 、 Figure 2, the present utility model provides an anti-icing and anti-fog cooling tower, which includes a tower body 1. A partition heat exchanger 2 is installed inside the tower body 1. The partition heat exchanger 2 includes a plurality of heat exchange units 21 arranged in a diamond structure and arranged in sequence. The heat exchange unit 21 has independent wet-heat channels 211 and dry-cool channels 212. A water collecting tank 3 is installed at the bottom of each heat exchange unit 21. A partition plate 4 is vertically installed at the bottom of each water collecting tank 3. The partition plate 4 divides the area below the partition heat exchanger 2 inside the tower body 1 into a staggered wet-heat area 11 and a dry-cool area 12. The wet-heat area 11 is communicated with the inlet of the wet-heat channel 211, and the dry-cool area 12 is communicated with the inlet of the dry-cool channel 212. A drain hole 33 is opened on the water collecting tank 3, and a water collecting pipe 8 is connected to the drain hole 33. The water collecting pipe 8 is located in the wet-heat area 11. Figure 1 The direction indicated by the dotted arrow in the figure is the flow direction of the air in the dry-cool channel 212, and the direction indicated by the solid arrow is the flow direction of the air in the wet-heat channel 211.

[0022] In the anti-icing and anti-fog cooling tower of the present utility model, during operation, the dry and cold air entering the tower body 1 is divided into two paths and flows upward. One path of the dry and cold air passes through the packing, exchanges heat with the sprayed water, enters the wet-heat area 11 and becomes wet and hot air, and then the wet and hot air enters the wet-heat channel 211 upward; the other path of the dry and cold air does not contact the sprayed water and directly enters the dry-cool area 12 upward, and then enters the dry-cool channel 212. Inside the heat exchange unit 21, the wet and hot air in the wet-heat channel 211 and the dry and cold air in the dry-cool channel 212 perform partition heat exchange. The wet and hot air is cooled and condensed, and the condensed water flows downward along the wet-heat channel 211. At the same time, the two streams of air passing through the wet-heat channel 211 and the dry-cool channel 212 are mixed and become wet and hot unsaturated air. Therefore, when leaving the tower, a large amount of "white mist" will not appear at the air outlet position of the cooling tower, achieving the anti-fog function.

[0023] In addition, part of the condensed water will flow downward along the inlet side of the wet-heat channel 211, finally enter the water collecting tank 3 at the bottom of the heat exchange unit 21, then flow into the water collecting pipe 8 through the drain hole 33, and finally be discharged into the water tank at the bottom of the tower body 1. During the above process, by setting the water collecting tank 3 to collect the condensed water, it effectively avoids the condensed water flowing onto the partition plate 4, thereby avoiding the freezing of the condensed water on the partition plate 4 and eliminating the hidden danger of the partition plate 4 falling off due to the excessive load of the condensed water icing on the partition plate 4. At the same time, by arranging the water collecting pipe 8 in the wet-heat area 11, it can prevent the condensed water in the water collecting pipe 8 from icing, ensuring that the condensed water can flow smoothly through the water collecting pipe 8 to the water tank at the bottom of the tower body 1.

[0024] The cross-section of the water collecting tank 3 is generally in a V-shaped structure to facilitate water collection. As a preferred embodiment, the water collecting tank 3 includes a bottom flat plate 31 and inclined plates 32 fixedly connected to opposite sides of the bottom flat plate 31. The two inclined plates 32 are respectively fixedly connected to both sides of the bottom of the heat exchange unit 21, and there is a gap between the inclined plates 32 and the heat exchange unit 21. During use, when part of the condensed water flows downward along the side wall of the heat exchange unit 21, it will flow through this gap to the bottom of the heat exchange unit 21 and then fall into the water collecting tank 3. Further, a drain hole 33 is opened on the inclined plate 32 located in the humid heat area 11. The partition plate 4 is arranged directly below the bottom flat plate 31, so that the orthographic projection of the bottom flat plate 31 in the direction of the partition plate 4 completely covers the partition plate 4, thereby further preventing condensed water from flowing onto the partition plate 4.

[0025] In this embodiment, the length of the water collecting tank 3 extends in the direction perpendicular to the paper surface, and the water collecting tank 3 is horizontally arranged. At this time, a plurality of water collecting pipes 8 are connected to one side of the water collecting tank 3 along the length direction of the water collecting tank 3. The plurality of water collecting pipes 8 can simultaneously discharge the condensed water in the water collecting tank 3, improving the drainage efficiency and meeting the operating conditions when a large amount of condensed water is generated in the cooling tower.

[0026] In other embodiments not shown, the water collecting tank 3 can also be inclined, with the two ends at different heights after installation. In this way, the condensed water flowing into the water collecting tank 3 will flow from the high place to the low place along the inclined water collecting tank 3. At this time, the water collecting pipe 8 can be connected to the lower part of the water collecting tank 3. The condensed water converges at the lower part of the water collecting tank 3 and finally enters the water collecting pipe 8, and then flows into the bottom of the tower body 1.

[0027] A cross beam 13 is installed in the tower body 1. The cross beam 13 is horizontally arranged. The bottom of the water collecting tank 3 is fixedly installed on the cross beam 13, and the upper end of the partition plate 4 is fixedly connected to the cross beam 13. The shell-and-tube heat exchanger 2 and the partition plate 4 are fixedly installed in the tower body 1 through the cross beam 13. In addition, a T-shaped fixing frame 5 is fixedly connected between every two adjacent heat exchange units 21. The lower end of the T-shaped fixing frame 5 is fixedly connected to the cross beam 13, thereby further improving the installation stability of the shell-and-tube heat exchanger 2.

[0028] The anti-icing and fog-eliminating cooling tower of the present utility model further includes a water distribution pipe and a filler installed in the tower body 1. The water distribution pipe and the filler are sequentially arranged below the shell-and-tube heat exchanger 2 from top to bottom. Sprayers are installed on the water distribution pipe. The specific connection method is the same as that of the Chinese patent document with the publication number CN215524263U (patent name: A water-saving and fog-eliminating natural draft cooling tower), which will not be elaborated here. During use, the sprayers corresponding to the humid heat area 11 spray water, and the sprayers in the dry cooling area 12 stop working, thereby realizing the function of zoning spraying.

[0029] In addition, a wind cylinder 6 is fixedly installed at the top of the tower body 1, and a fan 7 is installed inside the wind cylinder 6. During operation, the fan 7 is started, and the fan 7 discharges the air inside the tower body 1 upward, so that the dry and cold air outside the tower body 1 is introduced into the tower through the bottom of the side wall of the tower body 1, and exchanges heat with the spray water during the rising process, thereby reducing the temperature of the circulating water.

[0030] In the anti-icing and fog-eliminating cooling tower of the present utility model, a water collecting tank 3 is installed at the bottom of the heat exchange unit 21. When heat exchange occurs between the dry and cold air and the humid and hot air in the shell-and-tube heat exchanger 2, the generated condensed water will flow downward along the side wall of the heat exchange unit 21 on the inlet side of the humid channel 211, and then enter the water collecting tank 3, and finally flow into the water collecting pipe 8 through the drain hole 33, and then flow into the bottom of the tower body 1 through the water collecting pipe 8, effectively preventing the condensed water from flowing onto the partition plate 4, thereby avoiding the freezing of the condensed water on the partition plate 4, eliminating the hidden danger of the partition plate 4 falling off due to excessive load caused by the freezing of the condensed water, and ensuring the normal operation of the cooling tower.

[0031] Taking the above ideal embodiments based on the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the scope of the present utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An anti-icing and defogging cooling tower, comprising a tower body, wherein a partition-type heat exchanger is arranged in the tower body, wherein the partition-type heat exchanger comprises a plurality of heat exchange units in a diamond structure and arranged in sequence, wherein the heat exchange units have mutually independent wet heat channels and dry cold channels, and wherein: A water collecting trough is installed at the bottom of each heat exchange unit, and a partition is vertically installed at the bottom of each water collecting trough. The partition divides the area in the tower body below the partitioning wall heat exchanger into a staggered hot and humid zone and a dry and cold zone. The hot and humid zone is connected to the entrance of the hot and humid channel, and the dry and cold zone is connected to the entrance of the dry and cold channel. A drainage hole is opened on the water collecting trough, and a water collecting pipe is connected to the drainage hole. The water collecting pipe is located in the hot and humid zone.

2. The anti-icing and mist-eliminating cooling tower according to claim 1, characterized in that: The water collecting tank comprises a bottom plate and inclined plates fixedly connected to opposite sides of the bottom plate, and the two inclined plates are respectively fixedly connected to the two sides of the bottom of the heat exchange unit.

3. The anti-icing and mist-eliminating cooling tower according to claim 2, characterized in that: The drain hole is arranged on the inclined plate located in the hot and humid area.

4. The anti-icing and mist-eliminating cooling tower according to claim 2, characterized in that: The partition is arranged directly below the bottom plate.

5. The anti-icing and mist-eliminating cooling tower according to claim 1, characterized in that: The water collecting tank is arranged horizontally, and one side of the water collecting tank is connected with a plurality of water collecting pipes along the length direction of the water collecting tank.

6. The anti-icing and mist-eliminating cooling tower according to claim 1, characterized in that: The water collecting tank is arranged obliquely, and the water collecting pipe is connected to the lower part of the water collecting tank.

7. The anti-icing and mist-eliminating cooling tower according to claim 1, characterized in that: A crossbeam is installed in the tower body, the crossbeam is arranged horizontally, the bottom of the water collecting tank is fixedly installed on the crossbeam, and the upper end of the partition is fixedly connected to the crossbeam.

8. The anti-icing and mist-eliminating cooling tower according to claim 7, characterized in that: A T-shaped fixing frame is fixedly connected between every two adjacent heat exchange units, and the lower end of the T-shaped fixing frame is fixedly connected to the crossbeam.

9. The anti-icing and mist-eliminating cooling tower according to claim 1, characterized in that: A wind tube is fixedly installed on the top of the tower body, and a fan is installed in the wind tube.

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