Water-saving fog dispersal cooling tower with air inlet anti-icing function

Abstract

The utility model provides a water-saving fog-dispersal cooling tower with an air inlet anti-icing function, which relates to the technical field of cooling towers and is provided with a tower body, the lower part of the tower body is provided with an air inlet, and the top of the tower body is provided with an air outlet; an air inlet layer, a packing layer and a spraying layer are sequentially arranged between the air inlet and the air outlet from bottom to top; the air inlet layer is divided into a water spraying channel and a cold air channel through a partition plate. The anti-icing system comprises an anti-icing pipe, the anti-icing pipe is located at the end, close to the air inlet, of the partition plate, and a cavity for hot water to pass through is formed in the anti-icing pipe. According to the cooling tower, the anti-icing pipe is arranged on the edge, close to the air inlet, of the partition plate, hot water is introduced into the anti-icing pipe, the hot water in the pipe is kept in a flowing state, and the anti-icing or ice-melting effect can be achieved at the air inlet.

Description

Technical Field

[0001] This utility model relates to the field of anti-fogging cooling tower technology, specifically to a cooling tower with an air inlet anti-icing function. Background Technology

[0002] A cooling tower is a device that uses water as a circulating coolant to absorb heat from a system and release it into the atmosphere to lower the water temperature. Its principle is to use the heat exchange between water and air to generate steam. The steam evaporates and carries away the heat, achieving heat dissipation through evaporation, convection, and radiation to dissipate waste heat generated in industrial processes or refrigeration and air conditioning systems, thereby lowering the water temperature and ensuring the normal operation of the system.

[0003] Chinese invention patent CN113924453B discloses a packing sheet, a packing module, and a cooling tower. The packing module comprises: a first flow path and a second flow path stacked together for heat exchange between water sprayed from above and air flowing from below; a first inlet portion introducing water sprayed from one side of the packing module's width direction into the first flow path; a second inlet portion introducing water sprayed from the other side of the packing module's width direction into the second flow path; a first outlet portion guiding water flowing out of the first flow path to discharge from one side of the packing module's width direction; and a second outlet portion guiding water flowing out of the second flow path to discharge from the other side of the packing module's width direction. According to this invention, the two flow paths in the packing module can operate in different working modes. One flow path can spray water through air to cool the water, while the other flow path only carries air, exchanging heat through the partition wall to reduce misting when humid air is discharged into the atmosphere.

[0004] In this patent and similar technical solutions, the space below the packing module is divided into multiple drainage spaces by a partition. In winter, water sprayed into the drainage space near the air inlet is easily cooled quickly by cold air, causing it to freeze on the partition surface near the air inlet, affecting the normal operation of the cooling tower. Furthermore, in actual operation, the water curtain in the aforementioned drainage space is often affected by the airflow at the air inlet, causing it to sway and disperse, thus forming a certain area of ​​ice layer on the partition surface at the air inlet. Utility Model Content

[0005] This utility model addresses the aforementioned technical problems in the prior art by providing a water-saving and defogging cooling tower with an air inlet anti-icing function, which can prevent ice formation at the air inlet of the cooling tower.

[0006] To achieve the above technical objectives, this utility model provides a water-saving and defogging cooling tower with an air inlet anti-icing function, which has the following features:

[0007] The tower body has an air inlet at its lower part and an air outlet at its top. Between the air inlet and the air outlet, an air inlet layer, a packing layer, and a spray layer are arranged sequentially from bottom to top. The air inlet layer is divided into a water spray channel and a cold air channel by a partition.

[0008] An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe has a cavity inside for hot water to pass through.

[0009] In some embodiments, the anti-icing pipe has a plurality of water spray holes on its sidewall.

[0010] In some embodiments, the top of the anti-icing pipe is connected to the main water supply line.

[0011] In some embodiments, the top of the anti-icing pipe is provided with a water receiving portion located within the water spray channel.

[0012] In some embodiments, the bottom of the anti-icing tube is provided with a bottom hole for draining water from the cavity.

[0013] In some embodiments, the anti-icing tube is provided with a slot in the same direction as the extension of the anti-icing tube, and the end of the partition near the air inlet is embedded in the slot.

[0014] In some embodiments, the anti-icing tube has two cavities, and the slot is located between the two cavities.

[0015] In some embodiments, the sidewall of the anti-icing tube is recessed towards the inner cavity to form the slot.

[0016] Another aspect of this utility model provides a water-saving and defogging cooling tower with an air inlet anti-icing function, which has the following features:

[0017] The tower body has an air inlet at the bottom and an air outlet at the top. Cold air flows into the cooling tower from the air inlet and is discharged from the air outlet. Between the air inlet and the air outlet, an air inlet layer, a packing layer and a spray layer are arranged sequentially from bottom to top.

[0018] The air inlet layer is divided into a water spray channel and a cold air channel by a partition; the hot water sprayed from the spray layer passes through the filler layer and falls into the water spray channel; at least part of the cold air enters the filler layer through the cold air channel and exchanges heat with the hot water partition to form dry hot air;

[0019] An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe having an internal cavity for hot water to pass through; the anti-icing pipe has multiple spray holes on its side wall; the top of the anti-icing pipe has a water receiving part located in the water spray channel, and the bottom has a bottom hole for draining water from the cavity; the anti-icing pipe has a groove in the same direction of extension as the anti-icing pipe, and the end of the partition near the air inlet is embedded in the groove.

[0020] Another aspect of this utility model provides a water-saving and defogging cooling tower with an air inlet anti-icing function, which has the following features:

[0021] The tower body has an air inlet at the bottom and an air outlet at the top. Cold air flows into the cooling tower from the air inlet and is discharged from the air outlet. Between the air inlet and the air outlet, an air inlet layer, a packing layer and a spray layer are arranged sequentially from bottom to top.

[0022] The air inlet layer is divided into a water spray channel and a cold air channel by a partition; the hot water sprayed from the spray layer passes through the filler layer and falls into the water spray channel; at least part of the cold air enters the filler layer through the cold air channel and exchanges heat with the hot water partition to form dry hot air;

[0023] An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe having an internal cavity for hot water to pass through; the side wall of the anti-icing pipe is provided with multiple water spray holes; the top of the anti-icing pipe is connected to the main water supply pipeline, and the bottom is provided with a bottom hole for draining water from the cavity; the anti-icing pipe is provided with a groove in the same direction of extension as the anti-icing pipe, and the end of the partition near the air inlet is embedded in the groove.

[0024] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0025] In the cooling tower of this utility model, by setting an anti-icing pipe at the edge of the partition near the air inlet, and passing hot water through the anti-icing pipe and keeping the hot water in the pipe in a flowing state, the air inlet can be protected against icing or melt ice. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a cooling tower structure;

[0027] Figure 2 This is a top view of the air intake layer;

[0028] Figure 3 This is a schematic diagram of the anti-icing system according to the first embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the anti-icing pipe according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the anti-icing pipe according to another embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the anti-icing pipe according to another embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the anti-icing system according to the second embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of a cooling tower structure using the second implementation method of an anti-icing system.

[0034] Explanation of reference numerals in the attached figures

[0035] 10. Tower body; 11. Air inlet; 12. Air outlet; 13. Water tank;

[0036] 20. Air intake layer; 21. Baffle;

[0037] 30. Packing layer; 31. Packing module;

[0038] 40. Spray layer;

[0039] 50. Hybrid layer;

[0040] 60. Exhaust section; 61. Drive unit; 62. Fan;

[0041] 7. Anti-icing system; 70. Anti-icing pipe; 701. First sidewall; 702. Second sidewall; 703. First extension; 704. Second extension; 71. Cavity; 72. Water spray hole; 73. Slot; 74. Water receiving part; 75. Bottom hole;

[0042] 80. Main water supply line; 81. Connecting pipe;

[0043] H, water spray channel; C, cold air channel. Detailed Implementation

[0044] Other objects and advantages of this utility model will become clear by explaining the preferred embodiments of the present application below.

[0045] Figure 1 This is a schematic diagram of a cooling tower.

[0046] like Figure 1As shown, the cooling tower includes a tower body 10, with an air inlet 11 at the bottom and an air outlet 12 at the top. An exhaust section 60 is installed at the air outlet 12. The exhaust section 60 may include, for example, a drive unit 61 and a fan 62. The drive unit 61 is connected to the fan 62 via a transmission system to drive the fan 62 to rotate. When the fan 62 rotates in the exhaust section 60, an upward airflow is formed inside the cooling tower 10.

[0047] The interior of the tower body 10, from bottom to top, includes an air inlet layer 20, a packing layer 30, a spray layer 40, and a mixing layer 50.

[0048] The packing layer 30 is formed by arranging a plurality of packing modules 31 in a horizontal direction. The packing module 31 includes alternating stacked first flow paths and second flow paths.

[0049] For example, in some embodiments, a first upper opening communicating with a first flow path is formed in one section of the top width direction of the packing module 31, and a second upper opening communicating with a second flow path is formed in another section of the top width direction of the packing module 31. A first lower opening communicating with a first flow path is formed in one section of the bottom width direction of the packing module 31, and a second lower opening communicating with a second flow path is formed in another section of the bottom width direction of the packing module 31.

[0050] Figure 2 This is a top view of the air inlet layer 20. (Example) Figure 2 As shown, the air inlet layer 20 includes multiple longitudinally extending baffles 21, dividing the air inlet layer 20 into a water spray channel H and a cold air channel C. Preferably, the water spray channel H and the cold air channel C are alternately arranged. In the winter defogging mode, water is sprayed into the first flow path of the packing module 31, while air is introduced into the second flow path. Thus, the hot water sprayed from the spray layer 40 flows down through the first flow path to the water spray channel H. Part of the cold air from the outside enters the cold air channel C through the air inlet 11, and then rises through the cold air channel C to the second flow path of the packing module 31, where it exchanges heat with the hot water in the first flow path to form dry hot air; another part of the cold air from the outside enters the water spray channel H through the air inlet 11, and rises through the water spray channel H to the first flow path of the packing module 31, where it contacts the hot water in the first flow path to exchange heat, forming humid hot air. The dry hot air and the humid hot air flow through the spray layer 40 and then mix in the mixing layer 50 to form unsaturated humid hot air, which is then discharged into the atmosphere through the air outlet 12, thus reducing or eliminating the formation of white fog.

[0051] However, in the aforementioned air inlet layer 20, the water sprayed from the water distribution channel H near the air inlet 11 is easily cooled rapidly by the cold air, causing it to freeze on the surface of the baffle 21 near the air inlet 11, affecting the normal operation of the cooling tower. Furthermore, in actual operation, the water flow sprayed from the water distribution channel H is often affected by the airflow at the air inlet 11, causing it to sway and disperse, thus forming a certain area of ​​ice layer on the surface of the baffle 21 at the air inlet 11.

[0052] To solve the above-mentioned technical problems, this utility model provides a cooling tower with an air inlet anti-icing function.

[0053] like Figure 2 As shown, an anti-icing pipe 70 is installed at the edge of the partition 21 near the air inlet 11. Hot water is introduced into the anti-icing pipe 70, so that the anti-icing pipe 70 can preheat the cold air before it enters the water spray channel H, thus preventing icing. In addition, the anti-icing pipe 70 has a certain thickness, which can play a role in blocking water. That is to say, it can block the water in the water spray channel H, especially the wall flow near the partition 21 or formed on the surface of the partition 21, and prevent it from drifting to the outside of the cooling tower and freezing.

[0054] Figure 3 This is a schematic diagram of the anti-icing system according to the first embodiment of the present invention.

[0055] like Figure 3 As shown, the anti-icing system 7 includes multiple anti-icing pipes 70. These anti-icing pipes 70 extend in the same direction as the partition 21 and are located at the end of the partition 21 near the air inlet 11. In this embodiment, the anti-icing pipes 70 are arranged longitudinally, and each anti-icing pipe 70 has multiple spaced-apart water spray holes 72. These water spray holes 72 are used to spray water from the cavity 71 of the anti-icing pipe 70, serving to prevent icing or melt ice. Furthermore, by providing these water spray holes 72, the water inside the anti-icing pipe 70 can be kept flowing and at a constant temperature, preventing icing within the pipe.

[0056] The aforementioned anti-icing system 7 can be connected to the main water supply line 80 via the connecting pipe 82, thereby continuously supplying hot water to the anti-icing system 7 through the main water supply line 80.

[0057] Figure 4 This is a schematic diagram of the structure of an anti-icing pipe 70 according to an embodiment of the present invention.

[0058] like Figure 4 As shown, the anti-icing tube 70 has a slot 73 for receiving the edge of the partition 21 to transfer heat to the partition 21. In this embodiment, the anti-icing tube 70 and the partition 21 can be made of materials with high thermal conductivity, such as metal, to facilitate heat transfer between the anti-icing tube 70 and the partition 21.

[0059] When the anti-icing tube 70 is a square tube, the groove 73 is preferably formed by extending a first extension 703 along a direction parallel to the first sidewall 701 of the anti-icing tube 70, then bending towards the side where the cavity 71 is located, and extending a second extension 704 along a direction perpendicular to the first sidewall 701, with the groove 73 formed between the second extension 704 and the second sidewall 702.

[0060] In other embodiments, the anti-icing tube 70 described above can also be modified into a round tube, or substantially in the shape of a round tube, such modifications being equivalent embodiments.

[0061] Figure 5 This is a schematic diagram of the anti-icing pipe according to another embodiment of the present invention.

[0062] like Figure 5 As shown, the anti-icing pipe 70 has two cavities 71, and a slot 73 is located between the two cavities 71. In the cooling tower, the edge of the baffle 21 is embedded in the slot 73 to connect the baffle 21 to the anti-icing pipe 70. Thus, as shown in the figure, both the water spray channel H and the cold air channel C have anti-icing functions at their air inlets, so that both the water spray channel H and the cold air channel C spray water, or the water spray channel H and the cold air channel C can switch positions while still maintaining the anti-icing function at the air inlet position.

[0063] Figure 6 This is a schematic diagram of the anti-icing pipe according to another embodiment of the present invention.

[0064] like Figure 6 As shown, the two cavities 71 can also be structurally connected as one unit. The anti-icing tube 70 has an inner cavity 71, and one side of the cross-section of the anti-icing tube 70 is recessed to form a groove 73, and the end of the partition 21 is embedded in the groove 73.

[0065] The anti-icing pipe 70 in this embodiment has an arc-shaped top facing the air inlet direction, thereby having a smaller wind resistance.

[0066] In addition, the bottom of the anti-icing pipe 70 in this embodiment is provided with a bottom hole 75. The flow area of ​​the bottom hole 75 is smaller than the flow area of ​​the cavity 71 of the anti-icing pipe 70. This allows hot water to be kept in the cavity 71, and the hot water in the cavity 71 can be discharged through the bottom hole 75, thus maintaining the fluidity of the hot water in the cavity 71. It also allows all the water in the cavity 71 to be discharged when the cooling tower stops spraying, preventing water from accumulating in the cavity 71 and causing icing or corrosion of the anti-icing pipe 70.

[0067] In the first embodiment of the anti-icing system 7, a dedicated pipeline is required to connect the various anti-icing pipes 70 via a connecting pipe 81. To reduce costs, this invention also provides a second embodiment of the anti-icing system.

[0068] Figure 7 This is a schematic diagram of the anti-icing system according to the second embodiment of this utility model. Figure 7 As shown, in the anti-icing system 7 of this embodiment, a water receiving part 74 is provided at the top of the anti-icing pipe 70. The lower end of the water receiving part 74 is connected to the cavity 71 of the anti-icing pipe 70, and the upper end of the water receiving part 74 is funnel-shaped, with the opening gradually increasing from bottom to top. The water receiving part 74 can receive water dripping from top to bottom in the water spraying channel H. Since this part of water still has a certain temperature, it is sufficient to play the role of preventing icing or melting ice.

[0069] The anti-icing system 7 of this embodiment cleverly utilizes the residual heat of the water in the water spray channel H by setting the water receiving part 74, and collects it into the anti-icing pipe 70 to prevent icing in the area near the air inlet 11.

[0070] Figure 8 This is a schematic diagram of the structure of a cooling tower using the second embodiment of the anti-icing system 7.

[0071] like Figure 8 As shown, the anti-icing pipe 70 is located in the air inlet layer 20 of the cooling tower and is connected to the baffle 21 near the air inlet. Preferably, the anti-icing pipe 70 is located in the water spray channel H. The top of the anti-icing pipe 70 has a water receiving part 74, which is used to receive hot water in the water spray channel H, thereby preventing icing at the air inlet of the water spray channel H.

[0072] The apparatus of this application has been described in detail with reference to the preferred technical solutions. However, it should be noted that, without departing from the spirit of this application, those skilled in the art can make any modifications, alterations, and variations based on the above disclosure. This application includes the above-described specific embodiments and any equivalent forms thereof.

Claims

1. A water-saving and defogging cooling tower with anti-icing function at the air inlet, characterized in that, have: The tower body has an air inlet at its lower part and an air outlet at its top. Between the air inlet and the air outlet, an air inlet layer, a packing layer, and a spray layer are arranged sequentially from bottom to top. The air inlet layer is divided into a water spray channel and a cold air channel by a partition. An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe has a cavity inside for hot water to pass through.

2. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 1, characterized in that, The anti-icing pipe has multiple water spray holes on its side wall.

3. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 2, characterized in that, The top of the anti-icing pipe is connected to the main water supply line.

4. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 2, characterized in that, The top of the anti-icing pipe is equipped with a water receiving part located within the water spray channel.

5. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in any one of claims 1 to 4, characterized in that, The bottom of the anti-icing tube is provided with a bottom hole for draining water from the cavity.

6. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 1, characterized in that, The anti-icing tube is provided with a slot in the same direction as the extension of the anti-icing tube, and the end of the partition near the air inlet is embedded in the slot.

7. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 6, characterized in that, The anti-icing tube has two cavities, and the slot is located between the two cavities.

8. The water-saving and defogging cooling tower with anti-icing function at the air inlet as described in claim 6, characterized in that, The anti-icing tube has its sidewall recessed towards the inner cavity to form the slot.

9. A water-saving and defogging cooling tower with anti-icing function at the air inlet, characterized in that, have: The tower body has an air inlet at the bottom and an air outlet at the top. Cold air flows into the cooling tower from the air inlet and is discharged from the air outlet. Between the air inlet and the air outlet, an air inlet layer, a packing layer and a spray layer are arranged sequentially from bottom to top. The air inlet layer is divided into a water spray channel and a cold air channel by a partition; the hot water sprayed from the spray layer passes through the filler layer and falls into the water spray channel; at least part of the cold air enters the filler layer through the cold air channel and exchanges heat with the hot water partition to form dry hot air; An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe having an internal cavity for hot water to pass through; the anti-icing pipe has multiple spray holes on its side wall; the top of the anti-icing pipe has a water receiving part located in the water spray channel, and the bottom has a bottom hole for draining water from the cavity; the anti-icing pipe has a groove in the same direction of extension as the anti-icing pipe, and the end of the partition near the air inlet is embedded in the groove.

10. A water-saving and defogging cooling tower with anti-icing function at the air inlet, characterized in that, have: The tower body has an air inlet at the bottom and an air outlet at the top. Cold air flows into the cooling tower from the air inlet and is discharged from the air outlet. Between the air inlet and the air outlet, an air inlet layer, a packing layer and a spray layer are arranged sequentially from bottom to top. The air inlet layer is divided into a water spray channel and a cold air channel by a partition; the hot water sprayed from the spray layer passes through the filler layer and falls into the water spray channel; at least part of the cold air enters the filler layer through the cold air channel and exchanges heat with the hot water partition to form dry hot air; An anti-icing system includes an anti-icing pipe located at the end of the partition near the air inlet, and the anti-icing pipe having an internal cavity for hot water to pass through; the side wall of the anti-icing pipe is provided with multiple water spray holes; the top of the anti-icing pipe is connected to the main water supply pipeline, and the bottom is provided with a bottom hole for draining water from the cavity; the anti-icing pipe is provided with a groove in the same direction of extension as the anti-icing pipe, and the end of the partition near the air inlet is embedded in the groove.

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