A cooling tower that utilizes air energy

Abstract

This invention belongs to the technical field of natural draft cooling towers, specifically relating to a cooling tower utilizing air energy. It includes a tower body, an exhaust assembly installed at the top, a drain outlet at the bottom, air inlets on the bottom sidewall, and a liquid inlet pipe installed on the top sidewall, connected to a spray plate. A packing adjustment assembly is installed inside the tower body, and the assembly is filled with a packing layer. This invention, by lowering the top and bottom perforated plates and raising the annular perforated plate, encourages more packing to adhere to the tower wall, increasing the time it takes for water to pass through the packing layer at the tower wall, thus improving the cooling efficiency of the hot water flowing along the tower wall. Furthermore, by expanding a rubber bladder, which pushes the packing from the center to the edge of the packing layer, this invention increases the compactness of the packing layer at the tower wall, increasing the resistance to water flow and further slowing down the passage of water through the packing layer, thereby increasing the time it takes for water to pass through the packing layer at the tower wall.

Description

Technical Field

[0001] This invention belongs to the field of natural ventilation cooling tower technology, and specifically relates to a cooling tower that utilizes air energy. Background Technology

[0002] A natural draft cooling tower is a cooling device that relies on natural air convection (the chimney effect) to dissipate heat, without the need for mechanical fans. Its core principle is to utilize the density difference between hot and cold air to create natural draft. Cool, fresh air is drawn in at the bottom inlet, while heated, rising, humid air is expelled from the top. The tall tower structure creates a vertical pressure difference, driving continuous airflow. Hot water is distributed in thin films or droplets through a spray system, ensuring full contact with the upward-flowing air. Heat is released through both evaporation and conduction, ultimately achieving cooling.

[0003] The cooling tower is filled with packing material. The main function of the packing material is to increase the contact area between water and air, significantly improve the mass transfer efficiency between water and air, and accelerate heat transfer and water evaporation, as shown in the invention patent with publication number CN112393622A.

[0004] In actual use, cooling towers exhibit wall flow effect, meaning that the flow velocity near the tower wall is 30% to 50% faster than that at the center. As a result, the time for water to pass through the packing at the tower wall is reduced, leading to a decrease in the cooling efficiency of the hot water flowing along the tower wall. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a cooling tower that utilizes air energy, thereby solving the technical problems in the prior art.

[0006] The objective of this invention can be achieved through the following technical solution: A cooling tower utilizing air energy, comprising a tower body, an exhaust assembly installed at the top of the tower body, a drain port installed at the bottom, air inlets arranged on the bottom sidewall of the tower body, a liquid inlet pipe installed on the top sidewall of the tower body, the liquid inlet pipe connected to a spray plate, a packing adjustment assembly installed inside the tower body, the packing adjustment assembly being filled with a packing layer; the packing adjustment assembly includes a base plate fixedly installed on the tower body and an annular perforated plate slidably installed on the sidewall of the tower body, the annular perforated plate being connected to a bottom perforated plate via a rubber ring, and a top perforated plate being installed on the top of the bottom perforated plate; a transmission box is installed at the bottom of the base plate, a cylinder is installed at the bottom of the transmission box, the output end of the cylinder is connected to a telescopic rod, the top of the telescopic rod being rotatably connected to the top perforated plate; a push-pull rod is installed on the annular perforated plate, an inclined lifting platform is installed at the bottom of the push-pull rod, a connecting sleeve is installed on the telescopic rod, the connecting sleeve is connected to the inclined push platform via a push rod, the inclined push platform and the inclined lifting platform are inclinedly engaged, and the inclined lifting platform, the inclined push platform, the push rod and the connecting sleeve are all located inside the transmission box.

[0007] As a further optimization or improvement of this solution, a top cavity is opened at the center of the top perforated plate, and a bottom cavity is opened at the center of the bottom perforated plate. The telescopic rod passes through the bottom cavity on the bottom perforated plate and connects to the top perforated plate.

[0008] As a further optimization or improvement of this solution, an inclined groove is formed on the inner wall of the bottom cavity, and a sliding block is installed inside the top cavity, with the sliding block slidingly engaging with the inclined groove.

[0009] As a further optimization or improvement of this solution, a sliding sleeve is installed on the substrate, the telescopic rod slides inside the telescopic rod, a rubber bladder is installed on the telescopic rod, a bracket is installed inside the rubber bladder, a through groove is opened on the side wall of the sliding sleeve, and the telescopic rod is connected to the bracket through a connecting rod, with the connecting rod located inside the through groove.

[0010] As a further optimization or improvement to this solution, guide bars are installed on the side wall of the tower body, and the guide bars slide in conjunction with the grooves on the annular perforated plate.

[0011] As a further optimization or improvement to this solution, a filler layer is filled between the annular perforated plate and the substrate.

[0012] As a further optimization or improvement of this solution, the spray heads on the spray plate face the packing layer, and external gas enters from the bottom of the tower through the air inlet.

[0013] The beneficial effects of this invention are: (1) Based on the wall flow effect, the present invention promotes more packing layers to come closer to the tower wall by moving the top and bottom orifice plates downward and the annular orifice plate upward, thereby increasing the time for water to pass through the packing layer at the tower wall and improving the cooling efficiency of hot water flowing along the tower wall. Furthermore, the present invention uses a cylinder to drive a telescopic rod to move downwards, and the telescopic rod pushes the bracket through a connecting rod, causing the rubber bladder to open. The rubber bladder pushes the packing in the central area of ​​the packing layer towards the edge area, causing the packing to adhere to the tower wall, increasing the compactness of the packing layer at the tower wall, reducing the gaps between the packings, increasing the resistance of water flow through the packing layer at the tower wall, slowing down the water flow through the packing layer at the tower wall, and further increasing the time for water flow through the packing layer at the tower wall.

[0014] (2) In this invention, the cylinder drives the telescopic rod to move down, and the telescopic rod pushes the bracket through the connecting rod, causing the rubber bladder to open. When the water flows through the top perforated plate and the annular perforated plate into the central area of ​​the packing layer, the water flows along the top arc of the rubber bladder to the edge area of ​​the packing layer, increasing the length of the water flow path and preventing the edge area of ​​the packing layer from drying out.

[0015] (3) When the rubber bladder of the present invention is opened, when air enters the packing layer through the substrate, the air flows through the bottom arc surface of the rubber bladder to the edge area of ​​the packing layer, guiding the air toward the tower wall and improving the contact efficiency between the air and the water flow at the tower wall. Furthermore, when the top perforated plate is moved downward by the telescopic rod, the telescopic rod rotates the top perforated plate in cooperation with the slide and the inclined groove. The through holes on the top and bottom perforated plates are staggered, reducing the gas throughput of the bottom and top perforated plates. This promotes the air to be discharged through the through holes on the annular perforated plate, increases the air throughput through the edge area of ​​the packing layer, and enhances the cooling efficiency of the water flow along the tower wall. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a cross-sectional view of the overall structure of the present invention.

[0019] Figure 3 A schematic diagram of the overall structure of the filler adjustment assembly.

[0020] Figure 4 Front view of the overall structure of the packing adjustment assembly.

[0021] Figure 5 for Figure 4 Enlarged view of the structure of part A.

[0022] Figure 6 for Figure 4 Enlarged view of the structure of part B.

[0023] Figure 7 This is a diagram showing the connection between the inclined plane pusher and the inclined plane lifting platform.

[0024] Figure 8 This is a schematic diagram of the rubber bladder and support structure.

[0025] The diagram indicates: 1. Tower body; 2. Air inlet; 3. Base; 4. Exhaust assembly; 5. Drain outlet; 6. Spray plate; 7. Liquid inlet pipe; 8. Filler adjustment assembly; 801. Base plate; 802. Annular orifice plate; 803. Top orifice plate; 804. Bottom orifice plate; 805. Rubber ring; 806. Telescopic rod; 807. Slide seat; 808. Inclined groove; 809. Top cavity; 810. Guide bar; 811. Push-pull rod; 812. Inclined lifting platform; 813. Connecting sleeve; 814. Push rod; 815. Inclined push platform; 816. Transmission box; 817. Slide sleeve; 818. Rubber bladder; 819. Bracket; 820. Connecting rod; 821. Bottom cavity; 822. Through groove; 9. Packing layer; 10. Cylinder. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See Figures 1-7 A cooling tower utilizing air energy includes a tower body 1, an exhaust assembly 4 installed at the top of the tower body 1, a drain port 5 installed at the bottom, an air inlet 2 on the bottom side wall of the tower body 1, an inlet pipe 7 installed on the top side wall of the tower body 1, the inlet pipe 7 being connected to a spray plate 6, and a packing adjustment assembly 8 installed inside the tower body 1, the packing adjustment assembly 8 being filled with a packing layer 9; the packing adjustment assembly 8 includes a base plate 801 fixedly installed on the tower body 1 and an annular perforated plate 802 slidably installed on the side wall of the tower body 1, the annular perforated plate 802 being connected to a bottom perforated plate 804 via a rubber ring 805, and a top perforated plate 803 installed on top of the bottom perforated plate 804; the base plate 801... A transmission box 816 is installed at the bottom of plate 801, and a cylinder 10 is installed at the bottom of transmission box 816. The output end of cylinder 10 is connected to telescopic rod 806, and the top end of telescopic rod 806 is rotatably connected to top perforated plate 803. A push-pull rod 811 is installed on the annular perforated plate 802, and an inclined lifting platform 812 is installed at the bottom of push-pull rod 811. A connecting sleeve 813 is installed on telescopic rod 806, and the connecting sleeve 813 is connected to inclined push platform 815 through push rod 814. Inclined push platform 815 is inclined to cooperate with inclined lifting platform 812, and inclined lifting platform 812, inclined push platform 815, push rod 814 and connecting sleeve 813 are all located inside transmission box 816.

[0028] Specifically, guide bars 810 are installed on the side wall of the tower body 1, and the guide bars 810 slide in conjunction with the grooves on the annular perforated plate 802. The space between the annular perforated plate 802 and the base plate 801 is filled with a filler layer 9.

[0029] Specifically, the spray heads on the spray plate 6 face the packing layer 9, and external gas enters from the bottom of the tower body 1 through the air inlet 2.

[0030] It should be noted that the annular orifice plate 802 corresponds to the edge area of ​​the packing layer 9, that is, the packing layer 9 near the tower wall; the top orifice plate 803 and the bottom orifice plate 804 correspond to the central area of ​​the packing layer 9. A limit head is provided at the top of the guide bar 810 to prevent excessive displacement of the annular orifice plate 802. A base 3 for supporting the tower body 1 is installed at the bottom of the tower body 1.

[0031] This invention connects the liquid inlet pipe 7 to hot water, and the hot water is sprayed from the top to the bottom of the tower body 1 through the spray plate 6. At the same time, the air inlet 2 at the bottom of the tower body 1 draws in low-temperature fresh air, which comes into full contact with the downward hot water and releases heat through the dual effects of evaporation and conduction. During this process, the hot water seeps into the packing layer 9 through the packing adjustment component 8, and the low-temperature air comes into contact with the water flow in the packing layer 9, thereby increasing the contact area between water and air.

[0032] Based on the wall flow effect, see Figures 3-4 In this invention, the cylinder 10 drives the telescopic rod 806 to move downward. The telescopic rod 806, through its connection with the top perforated plate 803, drives the top perforated plate 803 and the bottom perforated plate 804 to move downward. See [link to relevant documentation]. Figure 7 The telescopic rod 806 moves downward, causing the connecting sleeve 813 to move downward simultaneously. The connecting sleeve 813, through the push rod 814, drives the inclined push platform 815 to move. Simultaneously, with the cooperation of the inclined push platform 815 and the inclined lifting platform 812, the downward movement of the telescopic rod 806 causes the push-pull rod 811 to move upward. (See also...) Figure 4 The present invention moves the top perforated plate 803 and the bottom perforated plate 804 downward and the annular perforated plate 802 upward, so that more packing layer 9 is brought closer to the tower wall, increasing the time for water to pass through the packing layer 9 at the tower wall and improving the cooling efficiency of hot water flowing along the tower wall. Furthermore, the present invention uses cylinder 10 to drive telescopic rod 806 to move downward. Telescopic rod 806 pushes bracket 819 through connecting rod 820, causing rubber bladder 818 to open. As rubber bladder 818 opens, it pushes the packing in the central area of ​​packing layer 9 towards the edge area, causing the packing to adhere to the tower wall, increasing the compactness of packing layer 9 at the tower wall, reducing the gaps between packings, increasing the resistance of water flow through packing layer 9 at the tower wall, slowing down the water flow through packing layer 9 at the tower wall, and further increasing the time for water flow through packing layer 9 at the tower wall.

[0033] See Figures 4-5 The top cavity 809 is formed at the center of the top perforated plate 803, and the bottom cavity 821 is formed at the center of the bottom perforated plate 804. The telescopic rod 806 passes through the bottom cavity 821 on the bottom perforated plate 804 and connects to the top perforated plate 803.

[0034] Specifically, the bottom cavity 821 has an inclined groove 808 on its inner wall, and the top cavity 809 has a slide 807 installed inside, with the slide 807 slidingly engaging with the inclined groove 808.

[0035] It should be noted that when the top perforated plate 803 is moved downward by the telescopic rod 806, the telescopic rod 806 drives the top perforated plate 803 to rotate under the cooperation of the slide block 807 and the inclined groove 808. The through holes on the top perforated plate 803 and the bottom perforated plate 804 are misaligned, the gas throughput of the bottom perforated plate 804 and the top perforated plate 803 is reduced, and air is discharged through the through holes on the annular perforated plate 802, thereby increasing the amount of air passing through the edge region of the packing layer 9.

[0036] When the top perforated plate 803 is moved downward by the telescopic rod 806, the telescopic rod 806 drives the top perforated plate 803 to rotate under the cooperation of the slide block 807 and the inclined groove 808. This causes the through holes on the top perforated plate 803 to gradually shift away from the through holes on the bottom perforated plate 804, reducing the amount of hot water entering from the central area of ​​the packing layer 9 and avoiding the problem that the hot water sprayed by the spray plate 6 is mainly concentrated in the central area of ​​the packing layer 9.

[0037] See Figure 4 and Figure 8 A sliding sleeve 817 is installed on the base plate 801. A telescopic rod 806 slides inside the telescopic rod 806. A rubber bladder 818 is installed on the telescopic rod 806. A bracket 819 is installed inside the rubber bladder 818. A through groove 822 is opened on the side wall of the sliding sleeve 817. The telescopic rod 806 is connected to the bracket 819 through a connecting rod 820, and the connecting rod 820 is located inside the through groove 822.

[0038] It should be noted that the hot water sprayed by the spray plate 6 is mainly concentrated in the central area of ​​the packing layer 9. When the hot water seeps into the packing layer 9, there is a channeling phenomenon, that is, the water flows straight down along the shortest path, resulting in some areas being completely dry and reducing the utilization rate.

[0039] In this invention, the cylinder 10 drives the telescopic rod 806 to move downward. The telescopic rod 806 pushes the bracket 819 through the connecting rod 820, causing the rubber bladder 818 to open. When the water flows into the central area of ​​the packing layer 9 through the top perforated plate 803 and the annular perforated plate 802, the water flows along the top arc of the rubber bladder 818 towards the edge area of ​​the packing layer 9, improving the water flow path and preventing the edge area of ​​the packing layer 9 from drying out.

[0040] As the rubber bladder 818 expands, when air enters the packing layer 9 through the substrate 801, the air flows through the bottom arc of the rubber bladder 818 towards the edge area of ​​the packing layer 9, guiding the air towards the tower wall and improving the contact efficiency between the air and the water flow at the tower wall.

[0041] The implementation principle of this invention is as follows: This invention connects the liquid inlet pipe 7 to hot water, and the hot water is sprayed from the top to the bottom of the tower body 1 through the spray plate 6. At the same time, the air inlet 2 at the bottom of the tower body 1 draws in low-temperature fresh air, which comes into full contact with the downward hot water and releases heat through the dual effects of evaporation and conduction. During this process, the hot water seeps into the packing layer 9 through the packing adjustment component 8, and the low-temperature air comes into contact with the water flow in the packing layer 9, thereby increasing the contact area between water and air.

[0042] Based on the wall flow effect, see Figures 3-4 In this invention, the cylinder 10 drives the telescopic rod 806 to move downward. The telescopic rod 806, through its connection with the top perforated plate 803, drives the top perforated plate 803 and the bottom perforated plate 804 to move downward. See [link to relevant documentation]. Figure 7 The telescopic rod 806 moves downward, causing the connecting sleeve 813 to move downward simultaneously. The connecting sleeve 813, through the push rod 814, drives the inclined push platform 815 to move. Simultaneously, with the cooperation of the inclined push platform 815 and the inclined lifting platform 812, the downward movement of the telescopic rod 806 causes the push-pull rod 811 to move upward. (See also...) Figure 4 The present invention moves the top perforated plate 803 and the bottom perforated plate 804 downward and the annular perforated plate 802 upward, so that more packing layer 9 is brought closer to the tower wall, increasing the time for water to pass through the packing layer 9 at the tower wall and improving the cooling efficiency of hot water flowing along the tower wall. Furthermore, the present invention uses cylinder 10 to drive telescopic rod 806 to move downward. Telescopic rod 806 pushes bracket 819 through connecting rod 820, causing rubber bladder 818 to open. As rubber bladder 818 opens, it pushes the packing in the central area of ​​packing layer 9 towards the edge area, causing the packing to adhere to the tower wall, increasing the compactness of packing layer 9 at the tower wall, reducing the gaps between packings, increasing the resistance of water flow through packing layer 9 at the tower wall, slowing down the water flow through packing layer 9 at the tower wall, and further increasing the time for water flow through packing layer 9 at the tower wall.

[0043] It should be noted that the hot water sprayed by the spray plate 6 is mainly concentrated in the central area of ​​the packing layer 9. When the hot water seeps into the packing layer 9, there is a channeling phenomenon, that is, the water flows straight down along the shortest path, resulting in some areas being completely dry and reducing the utilization rate.

[0044] In this invention, the cylinder 10 drives the telescopic rod 806 to move downward. The telescopic rod 806 pushes the bracket 819 through the connecting rod 820, causing the rubber bladder 818 to open. When the water flows into the central area of ​​the packing layer 9 through the top perforated plate 803 and the annular perforated plate 802, the water flows along the top arc of the rubber bladder 818 towards the edge area of ​​the packing layer 9, increasing the water flow path length and preventing the edge area of ​​the packing layer 9 from drying out.

[0045] As the rubber bladder 818 expands, when air enters the packing layer 9 through the substrate 801, the air flows through the bottom arc of the rubber bladder 818 towards the edge area of ​​the packing layer 9, guiding the air towards the tower wall and improving the contact efficiency between the air and the water flow at the tower wall.

[0046] Furthermore, when the top perforated plate 803 is moved downward by the telescopic rod 806, the telescopic rod 806 drives the top perforated plate 803 to rotate under the cooperation of the slide block 807 and the inclined groove 808. The through holes on the top perforated plate 803 and the bottom perforated plate 804 are misaligned, the gas throughput of the bottom perforated plate 804 and the top perforated plate 803 is reduced, and air is discharged through the through holes on the annular perforated plate 802, thereby increasing the amount of air passing through the edge region of the packing layer 9.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A cooling tower utilizing air energy, characterized in that: The tower body (1) includes an exhaust assembly (4) installed at the top of the tower body (1) and a drain port (5) installed at the bottom. An air inlet (2) is arranged on the bottom side wall of the tower body (1). An inlet pipe (7) is installed on the top side wall of the tower body (1). The inlet pipe (7) is connected to a spray plate (6). A packing adjustment assembly (8) is installed inside the tower body (1). The packing adjustment assembly (8) is filled with a packing layer (9). The packing adjustment assembly (8) includes a base plate (801) fixedly installed on the tower body (1) and an annular perforated plate (802) slidably installed on the side wall of the tower body (1). The annular perforated plate (802) is connected to a bottom perforated plate (804) through a rubber ring (805). A top perforated plate (803) is installed on the top of the bottom perforated plate (804). A transmission box (816) is installed at the bottom of the base plate (801). A cylinder (10) is installed at the bottom of the transmission box (816). The output end of the cylinder (10) is connected to a telescopic rod (806). The top end of the telescopic rod (806) is rotatably connected to the top perforated plate (803). A push-pull rod (811) is installed on the annular perforated plate (802). An inclined lifting platform (812) is installed at the bottom of the push-pull rod (811). A connecting sleeve (813) is installed on the telescopic rod (806). The connecting sleeve (813) is connected to the inclined push platform (815) through the push rod (814). The inclined push platform (815) is in inclined engagement with the inclined lifting platform (812). The inclined lifting platform (812), the inclined push platform (815), the push rod (814) and the connecting sleeve (813) are all located inside the transmission box (816). A sliding sleeve (817) is installed on the substrate (801). A telescopic rod (806) slides inside the telescopic rod (806). A rubber bladder (818) is installed on the telescopic rod (806). A bracket (819) is installed inside the rubber bladder (818). A through groove (822) is opened on the side wall of the sliding sleeve (817). The telescopic rod (806) is connected to the bracket (819) through a connecting rod (820), and the connecting rod (820) is located inside the through groove (822).

2. A cooling tower utilizing air energy according to claim 1, characterized in that: The top cavity (809) is opened at the center of the top perforated plate (803), and the bottom cavity (821) is opened at the center of the bottom perforated plate (804). The telescopic rod (806) passes through the bottom cavity (821) on the bottom perforated plate (804) and connects to the top perforated plate (803).

3. A cooling tower utilizing air energy according to claim 2, characterized in that: The bottom cavity (821) has an inclined groove (808) on its inner wall, and a slide (807) is installed inside the top cavity (809). The slide (807) and the inclined groove (808) are in sliding engagement.

4. A cooling tower utilizing air energy according to claim 1, characterized in that: Guide bars (810) are installed on the side wall of the tower body (1), and the guide bars (810) slide in conjunction with the grooves on the annular perforated plate (802).

5. A cooling tower utilizing air energy according to claim 1, characterized in that: The annular perforated plate (802) and the substrate (801) are filled with a filler layer (9).

6. A cooling tower utilizing air energy according to claim 1, characterized in that: The spray head on the spray plate (6) faces the packing layer (9), and external gas enters from the bottom of the tower body (1) through the air inlet (2).

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