Reverse flow cooling tower with low wind resistance

Abstract

The utility model relates to the technical field of cooling towers, in particular to a low-wind-resistance countercurrent cooling tower, which comprises a tower body, a water collecting tank arranged along the bottom end of the periphery of the inner wall of the tower body, an air inlet arranged on the periphery of the tower body above the water collecting tank, a filler layer arranged in the tower body above the air inlet, and a cooling device arranged on the tower body. An air cooler is arranged in the tower body above the filler layer, an air inlet and an air outlet are formed in the tower body on one side of the air cooler, and two ends of the air cooler are respectively communicated with the air inlet and the air outlet; an air outlet is formed in the top of the tower body; an air inlet is formed in the tower body, a cooler is arranged in the tower body below the air inlet, a cooling liquid inlet and a cooling liquid outlet are formed in the tower body on one side of the cooler, the two ends of the cooler are communicated with the cooling liquid inlet and the cooling liquid outlet respectively, and a cooling medium is conveyed into the cooler through the cooling liquid inlet. The cooling tower has the advantages that wind resistance in the tower body is reduced, and the cooling effect and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to a cooling tower, in particular to a low wind resistance counter-flow cooling tower. Background Art

[0002] Countercurrent cooling towers are widely used due to their advantages such as energy saving, low water pressure, low wind resistance and low noise. However, in current countercurrent cooling towers, after the medium to be cooled enters the tower body from the coil at the upper end of the cooling tower, the external air enters the cooling tower and is cooled by the spray water above, and then exchanges heat with the medium to be cooled. The cooled medium is then discharged from the cooling tower through the coil. However, the coil for the medium to be cooled in the existing cooling tower is usually set below the spray water, which causes the air coming in from the air inlet to have a larger wind resistance in the cooling tower, thereby affecting the normal operation of the cooling tower, resulting in poor cooling effect and affecting work efficiency. Utility Model Content

[0003] In order to solve the problems in the related art, the present application provides a low wind resistance counterflow cooling tower, which solves the problem that the existing counterflow cooling tower has large wind resistance and affects the working efficiency and cooling effect.

[0004] The technical solution is as follows:

[0005] A low wind resistance countercurrent cooling tower comprises a tower body, a water collecting pool is arranged at the bottom end along the periphery of the inner wall of the tower body, an air inlet is arranged at the periphery of the tower body above the water collecting pool, a packing layer is arranged in the tower body above the air inlet, and a cooling device for spraying cooling water in the water collecting pool on the packing layer is arranged on the tower body; an air cooler is arranged in the tower body above the packing layer, an air inlet and an air outlet are arranged on the tower body on one side of the air cooler, and two ends of the air cooler are respectively connected with the air inlet and the air outlet;

[0006] An air outlet is provided at the top of the tower body; the tower body is characterized in that a cooler is provided in the tower body below the air inlet, a coolant inlet and a coolant outlet are provided on the tower body on one side of the cooler, and two ends of the cooler are respectively connected to the coolant inlet and the coolant outlet, and the cooling medium is transported into the cooler through the coolant inlet.

[0007] Through the above technical scheme, by setting up the air cooler, the wind resistance in the tower body below the cooling device is reduced, thereby increasing the wind volume and speed of wind outside the tower body entering the tower body, and by setting up the cooler in the water collecting tank, the cooling water sprayed through the packing layer will first pass through the cooler before falling into the water collecting tank, so that the temperature of the cooling water drops, which reduces the wind resistance in the tower body, thereby ensuring the normal operation of the cooling tower; and because the cooler is filled with cooling medium, it can exchange heat with the falling cooling water, and the cooled cooling water can ensure the cooling speed of the subsequent air, thereby improving the working efficiency and cooling effect of the cooling tower.

[0008] Preferably, the cooler includes an inlet pipe and an outlet pipe with consistent structures, the inlet pipe is arranged in parallel above the outlet pipe, the inlet pipe is connected to the coolant inlet, and the outlet pipe is connected to the coolant outlet; a plurality of first coils are arranged in parallel in the tower body on one side of the inlet pipe and the outlet pipe, the first coils are arranged longitudinally, one end of each first coil is connected to the inlet pipe, and the other end of each first coil is connected to the outlet pipe.

[0009] Through the above technical solution, by setting up multiple first coils, the contact area between the cooling medium in the first coil and the heated cooling water is larger, so the cooling water can be cooled more quickly, thereby reducing the wind resistance in the tower body and ensuring the normal operation of the cooling tower.

[0010] Preferably, the air cooler includes an air inlet pipe and an air outlet pipe with the same structure, the air inlet pipe is arranged in parallel above the air outlet pipe, one end of the air inlet pipe is connected to the air inlet, and one end of the air outlet pipe is connected to the air outlet; a plurality of second coils are arranged in parallel in the tower body on one side of the air inlet pipe and the air outlet pipe, the second coils are arranged longitudinally, one end of each second coil is connected to the air inlet pipe, and the other end of each second coil is connected to the air outlet pipe.

[0011] Preferably, the cooling device includes a water pump and a spray mechanism, the water pump is arranged at the bottom of one side of the tower body, and the spray mechanism is arranged in the tower body above the packing layer and below the air cooler; the water inlet of the water pump is connected with a water inlet pipe, the other end of the water inlet pipe extends into the tower body, so that the water inlet pipe is connected with the water outlet arranged at the bottom of the water collecting tank; the water outlet of the water pump is connected with a drain pipe, the other end of the drain pipe extends into the tower body and is connected with the spray mechanism, and the water pump is used to pump the cooling water in the water collecting tank into the spray mechanism.

[0012] Preferably, the spray mechanism includes a plurality of spray pipes arranged in parallel, an end of each spray pipe close to the drain pipe is connected to the drain pipe, and an end of each spray pipe away from the drain pipe is sealed; a plurality of spray ports are arranged on the side wall surface of each spray pipe, and a spray head is arranged on each spray port, and the spraying direction of the spray head is toward the packing layer.

[0013] Preferably, a water collector is provided in the tower body above the spray pipe, and the water collector is located below the air cooler.

[0014] Through the above technical scheme, in the process of using spray water to cool the air in the tower body, there is water loss due to wind blowing. The cooling water formed by condensation after cooling water vaporization can be collected by the water collector so that it can be recycled, thereby ensuring the normal operation of the cooling tower and saving water resources.

[0015] Preferably, a matching air inlet window is provided on the air inlet.

[0016] In summary, the beneficial effects of a low wind resistance counterflow cooling tower are:

[0017] 1. The air cooler is set to reduce the wind resistance in the tower body below the cooling device, thereby increasing the wind volume and speed of the wind outside the tower body entering the tower body. The cooler is set in the water collection tank, and the cooling water sprayed through the packing layer will first pass through the cooler before falling into the water collection tank, so that the temperature of the cooling water drops, which reduces the wind resistance in the tower body, thereby ensuring the normal operation of the cooling tower; and because the cooler is filled with cooling medium, it can exchange heat with the falling cooling water, and the cooled cooling water can ensure the cooling speed of the subsequent air, thereby improving the working efficiency and cooling effect of the cooling tower;

[0018] 2. By setting up multiple first coils, the contact area between the cooling medium in the first coil and the heated cooling water is larger, so the cooling water can be cooled more quickly, thereby reducing the wind resistance in the tower body and ensuring the normal operation of the cooling tower;

[0019] 3. In the process of using spray water to cool the air in the tower, there is water loss due to wind blowing. The water collector can collect the cooling water formed by the condensation of the cooling water after vaporization so that it can be recycled, thereby ensuring the normal operation of the cooling tower and saving water resources.

[0020] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0022] Figure 1 It is a structural schematic diagram of a low wind resistance counterflow cooling tower;

[0023] Figure 2 A cross-sectional view of a low-drag counterflow cooling tower;

[0024] Figure 3 A side view of a low wind resistance counterflow cooling tower;

[0025] Figure 4 A top view of a low wind resistance counterflow cooling tower;

[0026] Figure 5 It is a structural schematic diagram of a spray pipe in a low wind resistance counterflow cooling tower;

[0027] Figure 6 A top view of a low wind resistance counterflow cooling tower;

[0028] Figure 7 for Figure 6 A partial enlarged view of the middle A part;

[0029] In the figure, 1. tower body; 2. water collecting tank; 3. air inlet; 4. packing layer; 5. air inlet; 6. air outlet; 7. air outlet; 8. coolant inlet; 9. coolant outlet; 10. liquid inlet pipe; 11. liquid outlet pipe; 12. first coil; 13. air inlet pipe; 14. air outlet pipe; 15. second coil; 16. water pump; 17. water inlet pipe; 18. drain pipe; 19. spray pipe; 20. spray head; 21. water collector. DETAILED DESCRIPTION

[0030] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices and methods consistent with some aspects of the utility model as detailed in the attached claims.

[0031] In a possible embodiment, as shown in the attached Figure 1-7As shown, a low wind resistance countercurrent cooling tower comprises a tower body 1, a water collecting pool 2 is arranged at the bottom end of the inner wall periphery of the tower body 1, an air inlet 3 is arranged at the periphery of the tower body 1 above the water collecting pool 2, and a matching air inlet window is arranged on the air inlet 3. Installing the air inlet window on the air inlet 3 of the cooling tower belongs to the prior art, and the specific structure of the air inlet window belongs to common knowledge, which will not be repeated here. The air inlet window can be installed on the air inlet 3, and the specific size and model are common knowledge, which will not be repeated here.

[0032] A packing layer 4 is arranged in the tower body 1 above the air inlet 3. The specific structure of the packing layer 4 of the cooling tower and the connection of the cooling tower are common knowledge and will not be described here. A cooling device for spraying the cooling water in the water collection tank 2 on the packing layer 4 is arranged on the tower body 1.

[0033] An air cooler is arranged in the tower body 1 above the packing layer 4, and an air inlet 5 and an air outlet 6 are arranged on the tower body 1 on one side of the air cooler. Both ends of the air cooler are connected to the air inlet 5 and the air outlet 6 respectively. The air cooler is arranged above the cooling device, so that the wind resistance in the tower body 1 becomes smaller, thereby increasing the wind volume and speed of the wind outside the tower body 1 entering the tower body 1.

[0034] An air outlet 7 is provided at the top of the tower body 1. It is common knowledge to provide an air outlet duct on the tower body 1 at the top of the air outlet 7. It is common knowledge to install a fan and fan blades on the air outlet duct to speed up the discharge of air in the tower body 1 to the outside of the tower body 1, which will not be repeated here.

[0035] A cooler is arranged in the tower body 1 below the air inlet 3, and a coolant inlet 8 and a coolant outlet 9 are arranged on the tower body 1 on one side of the cooler. The two ends of the cooler are respectively connected to the coolant inlet 8 and the coolant outlet 9, and the cooling medium is transported into the cooler through the coolant inlet 8. The specific cooling medium can be a medium that can reduce the temperature of the falling cooling water. This is common knowledge and will not be repeated here. A cooling liquid inlet pipe 10 is connected to the coolant inlet 8, and a cooling liquid outlet pipe 11 is connected to the coolant outlet 9. A control valve for controlling the flow rate and flow velocity in the pipe is respectively arranged on the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 11. These are all common knowledge and will not be repeated here. The model of the control valve can be one that can control the flow rate and flow velocity in the pipe. This is also common knowledge and will not be repeated here.

[0036] The cooler is located at the upper end of the water collecting tank 2, so the cooling water after spraying through the packing layer 4 will first pass through the cooler before falling into the water collecting tank 2, so that the heated cooling water will be cooled down, which reduces the wind resistance in the tower body 1, thereby ensuring the normal operation of the cooling tower; and because the cooler is filled with cooling medium, it can exchange heat with the falling cooling water, and the cooled cooling water can ensure the cooling speed of the subsequent air, thereby improving the working efficiency and cooling effect of the cooling tower.

[0037] The cooler includes a liquid inlet pipe 10 and a liquid outlet pipe 11 with the same structure. The liquid inlet pipe 10 is arranged in parallel above the liquid outlet pipe 11. The liquid inlet pipe 10 is connected to the cooling liquid inlet 8, and the liquid outlet pipe 11 is connected to the cooling liquid outlet 9. A plurality of first coils 12 are arranged in parallel in the tower body 1 on one side of the liquid inlet pipe 10 and the liquid outlet pipe 11. The first coils 12 are arranged longitudinally, one end of each first coil 12 is connected to the liquid inlet pipe 10, and the other end of each first coil 12 is connected to the liquid outlet pipe 11.

[0038] The air cooler comprises an air inlet pipe 13 and an air outlet pipe 14 of the same structure. The air inlet pipe 13 is arranged in parallel above the air outlet pipe 14. One end of the air inlet pipe 13 is connected to the air inlet 5, and one end of the air outlet pipe 14 is connected to the air outlet 6. A plurality of second coils 15 are arranged in parallel in the tower body 1 on one side of the air inlet pipe 13 and the air outlet pipe 14. The second coils 15 are arranged longitudinally. One end of each second coil 15 is connected to the air inlet pipe 13, and the other end of each second coil 15 is connected to the air outlet pipe 14. The air inlet 5 is connected to the air outlet 6. A hot air pipe is connected, and a cold air pipe is connected to the air outlet 6. A control valve for controlling the flow rate and flow velocity in the pipe is respectively arranged on the hot air pipe and the cold air pipe. These are all common knowledge and will not be elaborated here. The model of the control valve can be used to control the flow rate and flow velocity in the pipe, which is also common knowledge and will not be elaborated here. The hot air that needs to be cooled enters from the hot air pipe outside the tower body 1, passes through the air inlet pipe 13, and enters each second coil 15 in turn. The cooled air is discharged from the cold air pipe through the air storage pipe.

[0039] The cooling device includes a water pump 16 and a spray mechanism. The water pump 16 is arranged at the bottom of one side of the tower body 1, and the spray mechanism is arranged in the tower body 1 above the packing layer 4 and below the air cooler; the water inlet of the water pump 16 is connected with a water inlet pipe 17, and the other end of the water inlet pipe 17 extends into the tower body 1, so that the water inlet pipe 17 and the water outlet arranged at the bottom of the water collecting tank 2 are connected; the water outlet of the water pump 16 is connected with a drain pipe 18, and the other end of the drain pipe 18 extends into the tower body 1 and is connected with the spray mechanism. The water pump 16 is used to pump the cooling water in the water collecting tank 2 into the spray mechanism.

[0040] The spray mechanism includes a plurality of spray pipes 19 arranged in parallel, one end of each spray pipe 19 close to the drain pipe 18 is connected to the drain pipe 18, and one end of each spray pipe 19 far from the drain pipe 18 is sealed; a water pipe is arranged on one side of the spray pipe 19 close to the drain pipe 18, the length direction of the water pipe is perpendicular to the length direction of the spray pipe 19, both ends of the water pipe are sealed, and a first water outlet and a plurality of second water outlets are arranged on the side wall of the water pipe, the first water outlet is connected to the drain pipe 18, and each second water outlet The cooling water pumped out by the water pump 16 is transported to each of the spray pipes 19 for use after passing through the drain pipe 18 and the water pipe; a plurality of spray ports are arranged on the side wall of each spray pipe 19, and a spray head 20 is arranged on each spray port, and the spray direction of the spray head 20 is toward the packing layer 4. The specific structure of the spray head 20 and the method of installing it on the spray pipe 19 belong to common knowledge, and will not be repeated here. The spray head 20 used can realize the function of spraying cooling water, and the specific model belongs to common knowledge, and will not be repeated here;

[0041] A water collector 21 is provided in the tower body 1 above the spray pipe 19, and the water collector 21 is located below the air cooler; in the process of using spray water to cool the air in the tower body 1, there is water loss due to wind blowing, and the cooling water formed by condensation after the cooling water is vaporized can be collected by the water collector 21 so that it can be recycled, thereby ensuring the normal operation of the cooling tower and saving water resources; the specific structure of the water collector 21 is common knowledge and will not be repeated here. Condensed water that can be installed in the tower body 1 and can recover cooling water can be used. The specific model is common knowledge and will not be repeated here.

[0042] Operation principle: When the cooling tower is in use, the medium to be cooled is transported from the air inlet 5 to each first coil 12 through the air inlet pipe 13. At this time, the air around the tower body 1 enters the tower body 1 from the air inlet 3, and the fan set on the top of the tower body 1 sucks the air out of the tower body 1. At the same time, the water pump 16 is started to transport the cooling water in the water collection tank 2 to each spray pipe 19 through the drain pipe 18, and spray the cooling water on the packing layer 4 through each spray head 20. The cooling water from the air inlet is cooled by the heat exchange method. The incoming air temperature drops, and after cooling and before being discharged from the tower body 1, it passes through the first coil 12, thereby reducing the temperature of the medium to be cooled in the first coil 12 and being discharged from the outlet pipe 14 for use; the cooling water after spraying will fall back into the water collecting tank 2, and the temperature of the cooling water will rise, and before falling into the water collecting tank 2, it will contact the second coil 15. At this time, the cooling medium in the second coil 15 can cool the cooling water and then store it in the water collecting tank 2 for subsequent circulation.

[0043] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not present in the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0044] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A low wind resistance counterflow cooling tower, comprising a tower body, a water collecting pool is arranged at the bottom end of the inner wall periphery of the tower body, an air inlet is arranged at the periphery of the tower body above the water collecting pool, a packing layer is arranged in the tower body above the air inlet, and a cooling device for spraying cooling water in the water collecting pool on the packing layer is arranged on the tower body; An air cooler is arranged in the tower body above the packing layer, an air inlet and an air outlet are arranged on the tower body on one side of the air cooler, and two ends of the air cooler are respectively connected to the air inlet and the air outlet; The top of the tower body is provided with an air outlet; it is characterized in that: A cooler is arranged in the tower body below the air inlet, and a coolant inlet and a coolant outlet are arranged on the tower body on one side of the cooler. Both ends of the cooler are connected to the coolant inlet and the coolant outlet respectively, and the cooling medium is transported into the cooler through the coolant inlet.

2. A low wind resistance counterflow cooling tower according to claim 1, characterized in that: The cooler comprises a liquid inlet pipe and a liquid outlet pipe of the same structure, the liquid inlet pipe is arranged above the liquid outlet pipe in parallel, the liquid inlet pipe is communicated with the coolant inlet, and the liquid outlet pipe is communicated with the coolant outlet; A plurality of first coils are arranged in parallel in the tower body on one side of the liquid inlet pipe and the liquid outlet pipe. The first coils are arranged longitudinally, one end of each first coil is connected to the liquid inlet pipe, and the other end of each first coil is connected to the liquid outlet pipe.

3. A low wind resistance counterflow cooling tower according to claim 1, characterized in that: The air cooler comprises an air inlet pipe and an air outlet pipe of the same structure, the air inlet pipe is arranged in parallel above the air outlet pipe, one end of the air inlet pipe is connected to the air inlet, and one end of the air outlet pipe is connected to the air outlet; A plurality of second coils are arranged in parallel in the tower body on one side of the air inlet pipe and the air outlet pipe. The second coils are arranged longitudinally, one end of each second coil is connected to the air inlet pipe, and the other end of each second coil is connected to the air outlet pipe.

4. A low wind resistance counterflow cooling tower according to claim 1, characterized in that: The cooling device comprises a water pump and a spray mechanism, wherein the water pump is arranged at the bottom of one side of the tower body, and the spray mechanism is arranged in the tower body above the packing layer and below the air cooler; The water inlet of the water pump is connected to an inlet pipe, the other end of which extends into the tower body, so that the inlet pipe is connected to the water outlet arranged at the bottom of the water collecting tank; the water outlet of the water pump is connected to a drain pipe, the other end of which extends into the tower body and is connected to the spray mechanism, and the water pump is used to pump the cooling water in the water collecting tank into the spray mechanism.

5. A low wind resistance counterflow cooling tower according to claim 4, characterized in that: The spray mechanism comprises a plurality of spray pipes arranged in parallel, one end of each spray pipe close to the drain pipe is connected to the drain pipe, and one end of each spray pipe away from the drain pipe is sealed; A plurality of spray ports are arranged on the side wall surface of each spray pipe, and a spray head is arranged on each spray port, and the spray direction of the spray head is toward the packing layer.

6. A low wind resistance counterflow cooling tower according to claim 5, characterized in that: A water collector is arranged in the tower body above the spray pipe, and the water collector is located below the air cooler.

7. A low wind resistance counterflow cooling tower according to claim 1, characterized in that: The air inlet is provided with a matching air inlet window.

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