Hyperbolic cooling tower water recovery system

Abstract

The utility model relates to the technical field of cooling tower water recovery, in particular to a hyperbolic-curve-type cooling tower water recovery system which comprises a water condensation structure arranged in a tower body in the axial direction of the tower body and a sound wave generator arranged on the inner circumferential wall of the tower body and corresponding to the water condensation structure. The water condensation structure comprises a plurality of longitudinally-arranged partition plates, and the sound production direction of the sound wave generator intersects with the partition plates. Sound waves generated by the sound wave generator interact with hot and humid air in the tower body, the molecular motion state of water vapor carried in the hot and humid air is changed under the action of the sound waves, the condensation process of the water vapor is accelerated, and the longitudinally arranged partition plates are matched with the sound wave generator to further promote the condensation effect. Water drops condensed under the action of sound waves are attached to the partition plate and slide down along the surface of the partition plate to be recycled, so that the amount of water vapor discharged out of the tower along with hot air is greatly reduced, the water evaporation loss of the cooling tower is remarkably reduced, and the utilization rate of water resources is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower water recovery technology, and more specifically, to a hyperbolic cooling tower water recovery system. Background Technology

[0002] In industrial production, the large amount of waste heat generated by high-temperature processes (such as thermal power generation, steel smelting, and chemical reactions) needs to be dissipated through cooling systems to ensure stable equipment operation. In addition, hyperbolic cooling towers are also used as core cooling equipment in some urban centralized heating systems and aeration tanks of sewage treatment plants. As a typical natural draft cooling tower, the hyperbolic cooling tower utilizes the thermal pressure effect created by the difference in air density to drive heat and mass exchange between the air and cooling water inside the tower. It has advantages such as requiring no mechanical ventilation equipment (or only auxiliary ventilation), low energy consumption, and large processing capacity, making it a core component of large-scale cooling systems.

[0003] The working principle of a hyperbolic cooling tower is as follows: hot water to be cooled is pumped to the top of the tower and evenly sprayed onto the packing material inside the tower via a water distribution system. Simultaneously, cold air from outside enters through the air inlet at the bottom of the tower. Guided by the hyperbolic structure of the tower, the air accelerates upwards, and the hot water and cold air come into full contact in the gaps between the packing material, resulting in efficient heat exchange. During this process, the cold air absorbs heat from the hot water, its temperature rises, and its water vapor content increases, eventually forming humid air. This humid air is then discharged from the top of the tower by the suction force generated by the tower itself, thus cooling the hot water. However, this working mode reveals significant shortcomings in water conservation. Because the cooling process highly depends on the heat exchange between water and air, a large amount of water is lost to the atmosphere through evaporation. Even with current methods such as optimizing water spray density and improving packing material, evaporation loss remains the main component of water consumption in hyperbolic cooling towers, especially under hot and dry climate conditions where the evaporation rate increases significantly, making water waste even more prominent. Furthermore, during airflow, some water droplets are carried out of the cooling tower by the airflow, causing considerable wind damage. Despite the installation of devices such as water collectors, it is difficult to completely eliminate this phenomenon.

[0004] With the global water shortage becoming increasingly severe, the efficient use of industrial water has become a critical issue that urgently needs to be addressed. Against this backdrop, sound wave-based water-saving technologies have gradually emerged and are continuously developing. The application of sound wave technology in the field of water conservation has brought new ideas and possibilities for solving the problem of water waste in cooling towers. However, how to effectively apply sound wave technology to hyperbolic cooling towers and truly improve their water-saving effect remains a technical challenge that the industry urgently needs to overcome. Utility Model Content

[0005] The purpose of this invention is to provide a hyperbolic cooling tower water recovery system. By setting up a condensation structure and a sound wave generator inside the hyperbolic cooling tower, the sound waves emitted by the generator interact with the hot and humid air inside the tower. The water vapor carried in the hot and humid air changes its molecular motion state under the action of the sound waves, accelerating the condensation process. The longitudinally arranged baffles, in conjunction with the sound wave generator, further promote the condensation effect. The water droplets condensed by the sound waves adhere to the baffles and slide down the surface of the baffles for recovery, greatly reducing the amount of water vapor discharged from the tower with the hot air. This significantly reduces the water evaporation loss of the cooling tower and effectively improves the utilization rate of water resources. This solves the technical problem of how to effectively apply sound wave technology to hyperbolic cooling towers and truly improve their water-saving effect.

[0006] This utility model is achieved through the following technical solution: a hyperbolic cooling tower water recovery system, including a tower body, a water collection pool, packing material, a water distribution device, and a water baffle. The water collection pool is located at the lower end of the tower body, and the packing material and the water distribution device are both located inside the tower body. The water distribution device is located above the packing material, and the water baffle is located above the water distribution device. It also includes a condensate structure located inside the tower body along the axial direction of the tower body, and a sound wave generator located on the inner peripheral wall of the tower body corresponding to the condensate structure.

[0007] The condensation structure includes several longitudinally arranged baffles, and the sound emission direction of the sound wave generator intersects with the baffles.

[0008] According to a preferred embodiment, the sound wave generator is a low-to-medium frequency sound wave generator.

[0009] According to a preferred embodiment, the frequency range of the sound wave generator is 100 to 2000 Hz.

[0010] According to a preferred embodiment, the sound wave generator is a pneumatic sound wave generator driven by compressed air.

[0011] According to a preferred embodiment, the partition plate is provided with a plurality of acoustic wave through holes.

[0012] According to a preferred embodiment, a valve is provided on the compressed air inlet pipe connecting each of the pneumatic acoustic wave generators.

[0013] According to a preferred embodiment, the tower body is further provided with a water collector, which is located above the condensate structure.

[0014] According to a preferred embodiment, the surface of the partition is provided with a hydrophilic coating.

[0015] According to a preferred embodiment, a plurality of the partitions intersect circumferentially around the axis of the expanding duct, and the sound wave generator is arranged corresponding to the gap between adjacent partitions.

[0016] According to a preferred embodiment, each gap between adjacent partitions corresponds to at least one sound wave generator.

[0017] The technical solution of the hyperbolic cooling tower water recovery system provided by this utility model has at least the following advantages and beneficial effects:

[0018] (1) By setting up a condensate structure and a sound wave generator inside the hyperbolic cooling tower, the sound waves emitted by the sound wave generator interact with the hot and humid air inside the tower. The water vapor carried in the hot and humid air changes its molecular motion state under the action of the sound waves, which accelerates the condensation process of water vapor. The longitudinally set baffles, together with the sound wave generator, further promote the condensation effect. The water droplets condensed by the sound waves adhere to the baffles and slide down the surface of the baffles for recycling, which greatly reduces the amount of water vapor discharged out of the tower with the hot air, thereby significantly reducing the water evaporation loss of the cooling tower and effectively improving the utilization rate of water resources.

[0019] (2) The setting of the sound wave through hole causes the sound wave to diffract when it passes through. The sound wave through hole at different positions causes the sound wave to continue to propagate at different angles and along different paths, forming a complex and intertwined sound wave propagation path above the water baffle. This propagation method causes the sound wave to superimpose and interfere with each other in the various areas divided by the partition inside the tower, thereby forming a strong sound field with superposition effect, effectively avoiding the blind zone of sound wave propagation, and ensuring that every corner inside the tower can be effectively covered by the sound field. Under the action of this uniform and high-intensity sound field, the water vapor molecules in the hot and humid air can be more fully affected by the sound wave, thereby accelerating the condensation process and improving the overall water-saving effect of the cooling tower.

[0020] (3) By setting up a water collector above the condensate structure, it is possible to further capture the small water droplets that were not collected by the baffle after sonic condensation and natural cooling. By working together with the condensate structure, the efficiency of moisture recovery in the exhaust air is greatly improved and the dispersion of moisture outside the cooling tower is reduced.

[0021] (4) Valves are installed on the compressed air inlet pipes connecting each pneumatic acoustic generator. Operators can adjust the working status of each acoustic generator precisely through the valves according to the actual operating conditions of the cooling tower, such as changes in heat load, differences in ambient temperature and humidity, etc., to achieve flexible control of the acoustic effect and ensure the best water saving and operation effect under different conditions.

[0022] (5) The hydrophilic coating on the surface of the partition can reduce the contact angle between water and the surface of the partition, making it easier for water vapor to condense into water droplets on the surface of the partition, thereby improving the condensation efficiency and increasing the amount of condensed water.

[0023] (6) Several of the aforementioned baffles intersect circumferentially around the axis of the expanded air duct, and the resulting spatial structure allows water vapor to condense more evenly inside the tower, avoiding the concentration of condensate in certain local areas, which is conducive to improving the overall efficiency of water recovery. At the same time, this structure also guides the condensate to flow along the surface of the baffles to the water collection pool, reducing the secondary evaporation of water droplets during the falling process. Attached Figure Description

[0024] Figure 1 A schematic diagram of the longitudinal section of the hyperbolic cooling tower provided in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the condensation structure provided in Embodiment 1 of this utility model;

[0026] Reference numerals: 100-Tower body, 200-Water collection tank, 300-Filling material, 400-Water distribution device, 500-Water baffle, 600-Condensation structure, 610-Baffle plate, 620-Sonic wave through hole, 700-Sonic wave generator, 800-Water collector. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Example 1

[0029] In order to reduce the amount of water vapor discharged from the tower with hot air, reduce water evaporation loss of the cooling tower, and thus improve the utilization rate of water resources, this utility model applies acoustic technology to hyperbolic cooling towers and proposes a hyperbolic cooling tower water recovery system based on acoustic water collection.

[0030] This embodiment describes a hyperbolic cooling tower water recovery system based on acoustic water collection, such as... Figure 1 As shown, it includes a tower body 100, a water collection tank 200, packing material 300, a water distribution device 400, and a water baffle 500.

[0031] In some embodiments, the water collection tank 200 is located at the lower end of the tower body 100, which can conveniently collect the condensate generated during the cooling process in the cooling tower, providing storage space for the recycling of cooling water; the packing 300 and the water distribution device 400 are both located inside the tower body 100, with the water distribution device 400 located above the packing 300. The water distribution device 400 can evenly distribute the water to be cooled onto the packing 300. The packing 300 has a large specific surface area. After the water distribution device 400 evenly distributes the water onto the packing 300, a thin water layer is formed on the surface of the packing 300, increasing the water-air exchange. The contact area and contact time are considered. Simultaneously, during the heat exchange between hot water and cold air, some small water droplets are formed, and some of these droplets move with the rising airflow. The water deflector 500 is positioned above the water distribution device 400. The water deflector 500 can change the flow direction and speed of the airflow, causing the airflow carrying water droplets to collide and slow down during its flow, thus separating the water droplets from the airflow and collecting them. This reduces the number of water droplets carried out of the cooling tower, lowers wind losses, and improves water resource utilization. In a preferred embodiment, the water deflector 500 consists of several horizontally spaced water-deflecting blades, which are C-shaped.

[0032] Furthermore, the hyperbolic cooling tower water recovery system based on acoustic wave water collection provided in this embodiment also includes a condensation structure 600 arranged axially inside the tower body 100, and an acoustic wave generator 700 arranged on the inner peripheral wall of the tower body 100 corresponding to the condensation structure 600. The acoustic waves emitted by the acoustic wave generator 700 interact with the hot and humid air inside the tower body 100, thereby accelerating the water vapor condensation process.

[0033] In some implementations, see Figure 2 As shown, the condensate structure 600 includes several longitudinally arranged baffles 610. The baffles 610 extend along their length to contact or maintain a certain distance from the inner wall of the expansion duct; no specific limitation is made here. The sound-emitting direction of the sound generator 700 intersects with the baffles 610. The longitudinal arrangement of the baffles 610 based on the flow direction of water vapor allows water droplets condensed by the sound waves to adhere to the baffles 610 and slide down their surface for recycling. In some embodiments, several baffles 610 intersect circumferentially around the axis of the expansion duct, forming a spatial structure that allows water vapor to condense more evenly inside the tower body 100, preventing condensate from concentrating in certain local areas and improving the overall efficiency of water recycling. Simultaneously, this structure guides the condensate along the surface of the baffles 610 to the collection tank 200, reducing secondary evaporation of water droplets during their descent. Figure 2The number of partitions 610 is 4, but there is no specific limit here. The number of partitions 610 can be any number. The sound wave generator 700 is set in the gap between adjacent partitions 610. Each gap between adjacent partitions 610 corresponds to at least one sound wave generator 700. In other embodiments, a number of partitions 610 are arranged in a grid pattern, that is, they are formed by alternating two or more longitudinally arranged partitions 610 and two or more transversely arranged partitions 610. The specific number and arrangement of partitions 610 are not specifically limited here.

[0034] Specifically, this embodiment incorporates a condensation structure 600 and a sound wave generator 700 inside a hyperbolic cooling tower. The sound waves emitted by the sound wave generator 700 interact with the hot and humid air inside the tower body 100. The water vapor carried in the hot and humid air undergoes a change in molecular motion under the influence of the sound waves, accelerating the condensation process. The longitudinally arranged baffle 610, in conjunction with the sound wave generator 700, further promotes the condensation effect. The water droplets condensed by the sound waves adhere to the baffle 610 and slide down the surface of the baffle 610 for recycling, greatly reducing the amount of water vapor discharged from the tower with the hot air. This significantly reduces the water evaporation loss of the cooling tower and effectively improves the utilization rate of water resources.

[0035] Example 2

[0036] This embodiment further describes the sound wave generator 700 based on the technical solution provided in Embodiment 1:

[0037] In this embodiment, the sound wave generator 700 is a pneumatic sound wave generator 700 driven by compressed air, with a sound frequency range of 100–2000 Hz. It should be noted that the working principle of this pneumatic sound wave generator 700 is to generate sound waves by passing compressed air through it. The sound frequency emitted by the sound wave generator 700 is 100–2000 Hz, which belongs to the low-to-mid frequency range and will not resonate with equipment or facilities, thus avoiding damage.

[0038] Furthermore, the partition 610 is provided with a plurality of acoustic wave through holes 620. The arrangement of the acoustic wave through holes 620 causes diffraction when sound waves pass through. The acoustic wave through holes 620 at different positions cause the sound waves to continue to propagate at different angles and along different paths, forming a complex and intertwined sound wave propagation path above the water baffle 500. This propagation mode causes the sound waves to superimpose and interfere with each other in the various areas divided by the partition 610 above the water baffle 500, thereby forming a strong sound field with superposition effect. This effectively avoids blind spots in sound wave propagation and ensures that all corners above the water baffle 500 are effectively covered by the sound field. Under the action of this uniform and high-intensity sound field, water vapor molecules in hot and humid air can be more fully affected by the sound waves, thereby accelerating the condensation process and improving the overall water-saving effect of the cooling tower.

[0039] In addition, valves are provided on the compressed air inlet pipes connecting each of the pneumatic acoustic wave generators 700; operators can precisely adjust the working state of each acoustic wave generator 700 through the valves according to the actual operating conditions of the cooling tower, such as changes in heat load, differences in ambient temperature and humidity, etc., to achieve flexible control of the acoustic wave effect and ensure that the best water-saving and operating effect can be achieved under different conditions.

[0040] Example 3

[0041] This embodiment, based on the technical solution provided in Embodiment 2, further explains the internal structure of the tower body 100:

[0042] In this embodiment, a water collector 800 is also provided inside the tower body 100, and the water collector 800 is located above the condensation structure 600. Specifically, by setting the water collector 800 above the condensation structure 600, it is possible to further capture the fine water droplets that have not been collected by the baffle 610 after acoustic condensation and natural cooling. Through the coordinated work of the water collector 800 and the condensation structure 600, the efficiency of moisture recovery from the exhaust air is greatly improved, and the dispersion of moisture outside the cooling tower is reduced.

[0043] In terms of material selection, the surface of the baffle 610 is provided with a hydrophilic coating. The hydrophilic coating can reduce the contact angle between water and the surface of the baffle 610, making it easier for water vapor to condense into water droplets on the surface of the baffle 610, thereby improving condensation efficiency and increasing the amount of condensed water. In addition, the water baffle 500 and the brackets for installing the condensate structure 600, water collector 800, etc. are made of polytetrafluoroethylene or stainless steel, so as to adapt to the complex operating environment of the cooling tower and ensure the long-term stable operation of the equipment.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hyperbolic cooling tower water recovery system, comprising a tower body (100), a water collection tank (200), packing material (300), a water distribution device (400), and a water baffle (500), wherein the water collection tank (200) is located at the lower end of the tower body (100), the packing material (300) and the water distribution device (400) are both located inside the tower body (100), the water distribution device (400) is located above the packing material (300), and the water baffle (500) is located above the water distribution device (400), characterized in that, It also includes a condensation structure (600) disposed inside the tower body (100) along the axial direction of the tower body (100), and a sound wave generator (700) disposed on the inner peripheral wall of the tower body (100) corresponding to the condensation structure (600); The condensation structure (600) includes several longitudinally arranged baffles (610), and the sound generation direction of the sound wave generator (700) intersects with the baffles (610).

2. The hyperbolic cooling tower water recovery system as described in claim 1, characterized in that, The sound wave generator (700) is a low-to-medium frequency sound wave generator (700).

3. The hyperbolic cooling tower water recovery system as described in claim 2, characterized in that, The frequency range of the sound wave generator (700) is 100 to 2000 Hz.

4. The hyperbolic cooling tower water recovery system as described in claim 3, characterized in that, The sound wave generator (700) is a pneumatic sound wave generator (700) driven by compressed air.

5. The hyperbolic cooling tower water recovery system as described in claim 4, characterized in that, The partition (610) has a plurality of acoustic wave through holes (620).

6. The hyperbolic cooling tower water recovery system as described in claim 4, characterized in that, Valves are provided on the compressed air inlet pipes connecting each of the pneumatic acoustic wave generators (700).

7. The hyperbolic cooling tower water recovery system as described in claim 1, characterized in that, The tower body (100) is also equipped with a water collector (800), which is located above the condensate structure (600).

8. The hyperbolic cooling tower water recovery system as described in claim 1, characterized in that, The surface of the partition (610) is provided with a hydrophilic coating.

9. The hyperbolic cooling tower water recovery system as described in claim 1, characterized in that, Several of the partitions (610) intersect circumferentially around the axis of the expanding duct, and the sound wave generator (700) is set with respect to the gap between adjacent partitions (610).

10. The hyperbolic cooling tower water recovery system as described in claim 9, characterized in that, Each adjacent partition (610) has at least one corresponding sound wave generator (700) in the gap.

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