Circulating water cooling tower

Abstract

A circulating water cooling tower comprises a shell, a water collecting basin is arranged on the lower portion of the shell, and an air inlet net, filler, a water distribution pipe, a water collector and an air outlet device are sequentially arranged in the shell from bottom to top. The air inlet net is located on the outer vertical face of the shell, and dry and cold air outside the shell enters the shell from the air inlet net. A plurality of water distribution nozzles are uniformly arranged on the water distribution pipe; a compressed air resonance device is arranged at the upper part of the water collector; by means of the resonance principle, water vapor evaporated on the upper portion of the water cooling tower is condensed to form large-particle water drops, the large-particle water drops fall into the circulating water pool under the action of gravity, evaporation loss of the circulating water tower is reduced, fresh water supplementing amount of a circulating water system is reduced, and water resources of a company are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical circulating water, and more specifically to a circulating water cooling tower. Background Art

[0002] At present, in the production of the domestic and foreign chemical industries, circulating water is an indispensable public auxiliary system. A large amount of water enters the circulating water pool and enters the circulating cooling water supply system pipe network through the circulating water pump to cool the production device. The circulated cooling return water after heat exchange directly enters the circulating water cooling tower through the circulating cooling return water pipe by using the residual pressure. The cooling tower adopts a countercurrent mechanical draft cooling tower. Under the attraction of the fan to the air and the heat dissipation of the packing to the hot water, the circulated cooling return water and the cold air perform evaporation heat dissipation and mass transfer heat dissipation, so that the water temperature is reduced to a suitable production temperature. The cooled water enters the circulating water pool through the bottom pool of the tower and is lifted and conveyed to the circulating cooling water supply system pipe network by the circulating cooling water supply pump. During the evaporation cooling process of the circulating water, different degrees of loss will occur. According to statistics, the annual evaporation of the circulating water accounts for 20%-30% of the circulating water makeup water, and may reach 40% in summer at high times. Especially under the current situation of water resource and energy shortage, the country's requirements for environmental protection and comprehensive utilization of energy are becoming more and more strict. The scientific, reasonable and efficient water-saving technology of the circulating water cooling tower will be the development trend of the domestic and foreign recycling and utilization of circulating water. Summary of the Invention

[0003] To solve the above problems and overcome the deficiencies of the prior art, the utility model provides a circulating water cooling tower.

[0004] To achieve the above purpose, a circulating water cooling tower provided by the utility model includes a shell. A water collecting basin is arranged at the lower part of the shell. An air inlet net, a packing, a water distribution pipe, a water collector and an air outlet device are sequentially arranged in the shell from bottom to top;

[0005] The air inlet net is located on the outer facade of the shell, and the dry cold air outside the shell enters the inside of the shell through the air inlet net;

[0006] A number of water distribution nozzles are evenly arranged on the water distribution pipe;

[0007] A compressed air resonance device is arranged at the upper part of the water collector.

[0008] Further, the compressed air resonance device is installed at the center of the water collector.

[0009] Further, the compressed air resonance device is connected with a compressed air pipe, the other end of the compressed air pipe is connected with an air compressor station, and an automatic valve is arranged on the compressed air pipe.

[0010] Further, the air pressure in the compressed air pipe is 0.6-0.8 MPa, and the vibration frequency of the compressed air resonance device is 1200-2000 Hz.

[0011] Furthermore, a water replenishing pipe is connected to the side of the water collecting basin, a water pump is arranged on the water replenishing pipe, and the upper end of the water replenishing pipe is communicated with the water distribution pipe.

[0012] Furthermore, the orientation of the water distribution nozzle is vertically downward.

[0013] Furthermore, the air outlet device includes a fan and a fan blade. The fan blade is located at the upper end outlet of the housing. The fan is installed at the upper end of the housing, and the output shaft of the fan is connected to the fan blade.

[0014] Furthermore, a fresh water replenishing pipe is connected to the side of the water collecting basin.

[0015] Furthermore, a support is further included, and the water collector is connected to the inner wall of the housing through the support.

[0016] Furthermore, the support is set to be either a rigid connection or a flexible connection.

[0017] The beneficial effects of the present utility model are as follows:

[0018] It can improve the recycling and utilization rate of circulating water, reduce the makeup water volume of circulating water, achieve the purpose of saving fresh water, reduce the visual pollution of the cooling tower, and reduce the acid mist emission. By using the resonance principle, the water vapor evaporated from the upper part of the cooling tower is condensed to form large water droplets. Under the action of gravity, the large water droplets fall into the circulating water pool, reducing the evaporation loss of the circulating water volume in the water tower, reducing the fresh makeup water volume of the circulating water system, and saving the company's water resources.

[0019] Through the application of the cooling tower water-saving technology, the evaporation amount of the circulating water cooling tower is greatly reduced, the recycling and utilization rate of circulating water is improved, 20% of the fresh water makeup water volume is saved annually, and the company's operation cost is reduced. During the process of the large water droplets falling, heat exchange is carried out with the evaporated water vapor, further reducing the amount of evaporated water vapor of the circulating water, meeting the national requirements for energy conservation and consumption reduction. The cooling tower water-saving technology only has a "coalescence" effect on the water mist, without phase change, and will not affect the temperature inside the circulating water cooling tower. In terms of environmental protection, it reduces the visual pollution effect of the cooling tower and reduces the acid mist emission. Description of the Drawings

[0020] Attached Figure 1 is the structural diagram of the present utility model;

[0021] Attached Figure 2 is the structural diagram of the water collector of the present utility model;

[0022] Among them, the reference numerals are as follows:

[0023] 1. Water collecting basin, 2. Fresh water make-up pipe, 3. Water pump, 4. Make-up pipe, 5. Inlet air screen, 6. Packing, 7. Water distribution nozzle, 8. Water distribution pipe, 9. Water eliminator, 10. Compressed air resonance device, 11. Fan blade, 12. Fan, 13. Compressed air pipe, 14. Shell, 15. Bracket. Detailed implementation mode

[0024] To make the purpose, technical solution and advantages of the implementation of the present utility model clearer, the following will combine the attached Figure 1 and attached Figure 2 of the present utility model to describe the present utility model in more detail.

[0025] The circulating water cooling tower provided by the present utility model includes a shell 14. A water collecting basin 1 is arranged at the lower part of the shell 14. An inlet air screen 5, a packing 6, a water distribution pipe 8, a water eliminator 9 and an air outlet device are successively arranged inside the shell 14 from bottom to top; the inlet air screen 5 is located on the outer vertical surface of the shell 14, and the dry cold air outside the shell 14 enters the inside of the shell 14 through the inlet air screen 5; a plurality of water distribution nozzles 7 are uniformly arranged on the water distribution pipe 8; a pneumatic vibrator is arranged above the water eliminator 9; the pneumatic vibrator is installed at the center of the water eliminator 9; the pneumatic vibrator is connected with a compressed air pipe 13, the other end of the compressed air pipe 13 is connected with an air compressor station, and an automatic valve is arranged on the compressed air pipe 13; the air pressure in the compressed air pipe 13 is 0.6 - 0.8 MPa, and the vibration frequency of the pneumatic vibrator is 1200 - 2000 Hz; a make-up pipe 4 is connected to the side of the water collecting basin 1, a water pump 3 is arranged on the make-up pipe 4, and the upper end of the make-up pipe 4 is communicated with the water distribution pipe 8; the water distribution nozzle 7 faces vertically downward; the air outlet device includes a fan 12 and a fan blade 11, the fan blade 11 is located at the upper end outlet of the shell 14, the fan 12 is installed at the upper end of the shell 14, and the output shaft of the fan 12 is connected with the fan blade 11; a fresh water make-up pipe 42 is connected to the side of the water collecting basin 1; a bracket 15 is further included, and the water eliminator 9 is connected to the inner wall of the shell 14 through the bracket 15; the bracket 15 is set to be one of a rigid connection or a flexible connection.

[0026] The first embodiment is as follows:

[0027] The circulating water cooling tower includes a shell 14. The shell 14 can be set as one of a cuboid, a cube or a cone. A water collecting basin 1 is arranged at the lower part of the shell 14. The shape of the water collecting basin 1 is adapted to that of the shell 14. After the circulating water falls down, it exists inside the water collecting basin 1 and waits for the next cycle, and cools down while waiting.

[0028] An inlet air screen 5, a packing 6, a water distribution pipe 8, a water eliminator 9 and an air outlet device are successively arranged inside the shell 14 from bottom to top;

[0029] The air outlet device includes a fan 12 and a fan blade 11. The fan blade 11 is located at the upper end outlet of the housing 14. The fan 12 is installed at the upper end of the housing 14. The output shaft of the fan 12 is connected to the fan blade 11. The air flow direction of the fan blade 11 is from bottom to top. Driven by the fan blade 11, dry cold air is driven to enter the housing 14 from the air inlet net 5 and flow upward.

[0030] The air inlet net 5 is located on the outer vertical surface of the housing 14. Dry cold air outside the housing 14 enters the housing 14 from the air inlet net 5. A louver grille is provided at the air inlet net 5 in a rotatable manner. By controlling the gear or installing a damping device, it is ensured that after the louver grille is adjusted to a certain angle, its state can be maintained, and at the same time, the angle can be adjusted to change the intake of external dry cold air;

[0031] A fresh water make-up pipe 42 is connected to the side of the water collecting basin 1, which can supplement cooling circulating water into the water collecting basin 1 when the circulating water in the water collecting basin 1 is insufficient. At the same time, a make-up pipe 4 is connected to the side of the water collecting basin 1. A water pump 3 is provided on the make-up pipe 4. The upper end of the make-up pipe 4 is communicated with a water distribution pipe 8. The water distribution pipe 8 is located between the packing 6 and the water separator 9. A number of water spraying nozzles 7 are evenly arranged on the water distribution pipe 8. The orientation of the water spraying nozzles 7 is vertically downward. The circulating water in the water collecting basin 1 is pressurized by the water pump 3, passes through the make-up pipe 4 and the make-up pipe 4 from the water collecting basin 1, and is sprayed onto the packing 6 from the water spraying nozzles 7. During this process, heat exchange takes place, and while the water vapor evaporates, the packing 6 is cooled.

[0032] At this time, the liquid water drips from the packing 6 into the water collecting basin 1 and waits for the next cycle;

[0033] At the same time, dry cold air outside the housing 14 enters from the air inlet net 5, contacts the circulating water through the packing 6, and while performing heat exchange, drives the water vapor to move upward to the water separator 9.

[0034] The water separator 9 is connected to the inner wall of the housing 14 through a bracket 15. The bracket 15 is set to be one of a rigid connection or a flexible connection. The rigid connection can adopt the angle steel welding method or the aluminum profile riveting method. The flexible connection can adopt the combination method of a flange and a flexible gasket or the rubber soft joint method. When using a rigid connection, the vibration of the water separator 9 can be made more stable. When using a flexible connection, the vibration range of the water separator 9 can be made larger.

[0035] A compressed air resonance device 10 is provided at the upper part of the water separator 9. The compressed air resonance device 10 adopts a pneumatic vibrator. The pneumatic vibrator is installed at the center of the water separator 9. The pneumatic vibrator is connected to a compressed air pipe 13. The other end of the compressed air pipe 13 is connected to an air compressor station. An automatic valve is provided on the compressed air pipe 13. The air pressure in the compressed air pipe 13 is 0.6 - 0.8 MPa, and the vibration frequency of the pneumatic vibrator is 1200 - 2000 Hz.

[0036] Add a set of compressed air resonance device 10 to the upper part of the circulating water cooling tower. The clean compressed air generated by the air compressor station with a pressure of 0.6 - 0.8 MPa is introduced into the compressed air resonance device 10. The compressed air resonance device 10 uses a pneumatic vibrator. By adjusting the flow rate and pressure of the compressed air entering the pneumatic vibrator, the vibration frequency of the pneumatic vibrator is controlled within 1200 - 2000 Hz. A positive motion agglomeration mechanism is generated for the fine water particles in the upper part of the circulating water cooling tower. Water particles of different diameters are driven to different degrees. Large particles have greater inertia and are not easily entrained, and tend to maintain their original state, while fine particles are easily driven to move with the vibration of the medium. Thus, relative motion occurs between large and small water particles. The large particles act as collection nuclei and agglomerate the small particles that collide with them, thereby reducing the fine particles and increasing the average core diameter. At the same time, according to the principle of fluid mechanics, the particles are rapidly compressed and the density increases. Under the action of appropriate frequency and pressure, the fine water droplets perform relative motion, collide with each other, and coagulate into large water droplets, which drip into the circulating water pool under the action of gravity. The large water droplets exchange heat with the evaporated water vapor during the falling process, further reducing the amount of evaporated water vapor in the circulating water.

[0037] Through the application of the water-saving technology for the cooling tower, the evaporation rate of the circulating water cooling tower is greatly reduced, the recovery and utilization rate of the circulating water are improved, and 20% of the fresh water make-up volume is saved. During the falling process, the large water droplets exchange heat with the evaporated water vapor, further reducing the amount of evaporated water vapor in the circulating water. The water-saving technology for the cooling tower only has a "coagulation" effect on the water mist, no phase change occurs, and it will not affect the temperature inside the circulating water cooling tower. In terms of environmental protection, the visual pollution effect of the cooling tower is reduced and the acid mist emission is reduced.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating water cooling tower, characterized in that: It comprises a shell, a water collecting basin is arranged at the lower part of the shell, and an air inlet net, a filler, a water distribution pipe, a water collector and an air outlet device are arranged in sequence from bottom to top inside the shell; The air inlet net is located on the outer facade of the shell, and the dry cold air outside the shell enters the shell through the air inlet net; A plurality of water distribution nozzles are evenly arranged on the water distribution pipe; A compressed air resonance device is arranged on the upper part of the water collector.

2. The circulating water cooling tower according to claim 1, characterized in that: The compressed air resonance device is installed at the center of the water collector.

3. The circulating water cooling tower according to claim 2, characterized in that: The compressed air resonance device is connected to a compressed air pipe, the other end of the compressed air pipe is connected to an air compression station, and an automatic valve is arranged on the compressed air pipe.

4. The circulating water cooling tower according to claim 3, characterized in that: The air pressure in the compressed air pipe is 0.6-0.8 MPa, and the vibration frequency of the compressed air resonance device is 1200-2000 Hz.

5. The circulating water cooling tower according to claim 1, characterized in that: A water supply pipe is connected to the side of the water collection basin, a water pump is arranged on the water supply pipe, and the upper end of the water supply pipe is connected to the water distribution pipe.

6. The circulating water cooling tower according to claim 1, characterized in that: The water distribution nozzle is oriented vertically downward.

7. The circulating water cooling tower according to claim 1, characterized in that: The air outlet device comprises a fan and fan blades, wherein the fan blades are located at the upper end outlet of the shell, the fan is installed at the upper end of the shell, and the output shaft of the fan is connected to the fan blades.

8. The circulating water cooling tower according to claim 1, characterized in that: A fresh water replenishment pipe is connected to the side of the water collection basin.

9. The circulating water cooling tower according to claim 1, characterized in that: It also includes a bracket, and the water collector is connected to the inner wall of the shell through the bracket.

10. The circulating water cooling tower according to claim 9, characterized in that: The bracket is configured as either a rigid connection or a flexible connection.

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