Device for eliminating rime fog of water cooling tower
By setting up a rotary filler mixer and dry cold air passage on the top of the cool water tower, the cold air is mixed with hot saturated water vapor and captured, solving the problem of white mist and moisture loss, achieving efficient water recovery and smoke elimination.
Patent Information
- Application Number
- CN202323328900.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2033-12-07
AI Technical Summary
The existing cool water towers produce white mist during cooling, causing visual pollution and taking away a lot of water, lacking effective elimination and recycling measures.
A device is designed to introduce cold air into mixing with hot saturated water vapor by setting a rotary filler mixer and dry cold air passage on the top of the cool water tower, and to capture condensed water droplets using the filler layer to reduce water vapor temperature and moisture loss.
The smoke removal rate and moisture loss of white mist are significantly reduced, and water recovery and conservation are achieved. The smoke removal rate reaches 70-90%, and the water volume is saved by about 40%.
Smart Images
Figure CN222124018U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cooling tower accessory components, in particular to a device for eliminating white mist in a cooling tower. Background Art
[0002] Existing cooling towers are primarily used to cool industrial circulating hot water. Their operating principle is to use convection between incoming wind and water pouring down from above to remove the heat source. Some of the water evaporates during this convection, carrying away the corresponding latent heat of evaporation, thereby lowering the water temperature. During this process, the fan blades at the top of the cooling tower rotate, drawing saturated hot water vapor from the lower portion of the cooling tower to the outside of the cooling tower. After the saturated hot water vapor is discharged from the curved wind duct at the top of the cooling tower, it encounters cold air outside and condenses into small droplets, forming a white mist. This creates visual pollution while also removing a large amount of water. Therefore, how to eliminate this visual pollution and avoid excessive water replenishment has become a pressing technical challenge for cooling towers. Utility Model Content
[0003] The purpose of the utility model is to provide a device for eliminating white mist in a cooling tower, so as to solve the problems raised in the above background technology.
[0004] To achieve the above objectives, the present invention provides the following technical solutions:
[0005] A device for eliminating white mist in a cooling tower comprises a cooling tower body, an exhaust port is provided at the top of the cooling tower body, cooling tower fan blades are provided at the lower part of the exhaust port for causing saturated hot water vapor inside the cooling tower to rise, a rotating filler-type mixer is provided at the top of the cooling tower fan blades for mixing saturated hot water vapor and dry cold air, and a dry cold air channel for communicating with an external connection is provided at a position corresponding to the rotating filler-type mixer and the cooling tower body.
[0006] The beneficial effects of the present invention are as follows: the present invention transforms the existing cooling tower, and allows the cold air to enter through the dry cold air channel, so that it meets the original hot saturated water vapor inside the cooling tower body, and is fully mixed in the rotating packing mixer. It can not only promote the rapid condensation of saturated hot water vapor into small droplets and maximize the contact with the water-containing gas phase through the packing layer of the rotating packing mixer and capture the water droplets, thereby achieving the characteristics of improving its capture efficiency and water recovery capacity, but also reduce the temperature of the discharged water vapor at the same time, so as to achieve the characteristics of eliminating visual pollution and reducing water loss.
[0007] Preferably, the rotary filler mixer includes a cylinder that passes through from top to bottom, a bracket is provided on the inner wall of the cylinder, the bracket is connected to a rotating shaft provided at the center of the cylinder through a bearing, and the rotating shaft is connected to a power unit; a filler layer is provided between the rotating shaft and the inner wall of the cylinder.
[0008] Preferably, an annular water collecting trough is provided at the lower part of the cylinder, and the annular water collecting trough includes an annular bottom plate, which is arranged on the inner side of the bottom of the cylinder and connected to the inner wall of the bottom of the cylinder, and an annular water baffle is provided on the inner side of the annular bottom plate; a water outlet connected to the annular water collecting trough is provided on the outer wall of the bottom of the cylinder.
[0009] Preferably, the water outlet is arranged at a height smaller than the height of the top of the annular water baffle.
[0010] Preferably, there are several water outlets, which are evenly distributed on the outer wall of the bottom of the cylinder.
[0011] Preferably, the outlet of the dry cold air channel is arranged at the lower part of the cooling tower blade.
[0012] Preferably, a mixer blade for rapid air induction is provided on the rotating shaft at the lower part of the bracket.
[0013] Preferably, a dry cold air channel outlet is provided between the mixer blades and the cooling tower blades.
[0014] Preferably, a rotating shaft is mounted on the middle portion of the cooling tower fan blade, the rotating shaft and the rotating shaft are respectively connected to the output ends of the dual-output shaft commutator, and the input end of the dual-output shaft commutator is connected to the first motor.
[0015] Preferably, a rotating shaft is mounted on the middle portion of the cooling tower fan blade, and the rotating shaft is connected to the main shaft of the first motor; and the rotating shaft is connected to the main shaft of the second motor.
[0016] The utility model is suitable for being installed in the inner upper part of the cooling tower to achieve the characteristics of reducing water loss and eliminating visual pollution. It is further suitable for cooling tower working conditions with a large amount of water vapor. At the same time, the more obvious the water mist is on the upper part of the cooling tower in winter, the greater the amount of cold air entering from the cold air inlet, and the more obvious the effect of eliminating mist and recovering water vapor. The utility model utilizes a dry cold air channel to introduce external cold air into the upper part of the cooling tower, so that the cold air is mixed with the hot saturated water vapor to be discharged, and the purpose of eliminating visual pollution is achieved by lowering the temperature. Furthermore, when the two are mixed, they contact with each other through the filler layer to capture water droplets, thereby achieving the characteristics of eliminating visual pollution and reducing water loss. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the present utility model.
[0018] Figure 2 This is another structural diagram of the present invention.
[0019] Figure 3 This is another structural diagram of the present utility model.
[0020] Figure 4 for Figure 3 Schematic diagram of the top view of the rotating packing type.
[0021] Figure 5 for Figure 3 Schematic diagram of the upward structure of the rotating filler type.
[0022] In the figure: 1. Cooling tower body; 2. Exhaust port; 3. Cooling tower fan blades; 4. Rotating packing mixer; 5. Dry cold air channel; 6. Cylinder; 7. Bracket; 8. Bearing; 9. Rotating shaft; 10. Packing layer; 11. Annular bottom plate; 12. Annular water baffle; 13. Water outlet; 14. Mixer blades; 15. Rotating shaft; 16. Dual output shaft commutator; 17. First motor; 18. Second motor. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0024] Reference Figure 1-3 As shown, a device for eliminating white mist in a cooling tower comprises a cooling tower body 1, an exhaust port 2 is provided at the top of the cooling tower body 1, a cooling tower fan blade 3 is provided at the lower part of the exhaust port 2 for causing saturated hot water vapor inside the cooling tower to rise, a rotating packing type mixer 4 is provided at the top of the cooling tower fan blade 3 for mixing saturated hot water vapor and dry cold air, and a dry cold air channel 5 for connecting to the outside is provided at a position corresponding to the rotating packing type mixer 4 and the cooling tower body 1. The utility model is used to introduce the cold air in the dry cold air channel 5 connected to the outside into the upper part of the cooling tower body 1, so that the cold air meets the hot saturated water vapor to be discharged, and is fully mixed by the rotating packing type mixer 4, and the rotating packing type mixer 4 meets and captures condensed water droplets during the rotation process, so as to reduce the temperature of the air discharged from the cooling tower, recycle water, and avoid replenishing a large amount of water.
[0025] Further, refer to Figure 1-5As shown, the rotating filler mixer 4 includes a cylinder 6 that passes through from top to bottom. A bracket 7 is provided on the inner wall of the cylinder 6. The bracket 7 is connected to a rotating shaft 9 provided at the center of the cylinder 6 through a bearing 8. The rotating shaft 9 is connected to a power unit. A filler layer 10 is provided between the rotating shaft 9 and the inner wall of the cylinder 6. The rotating filler water collector in the present invention is suitable for processing conditions with a large amount of water-containing gas phase. It includes a cylinder 6, the bottom of which is used to enter the water-containing gas phase, and the top of which is used to discharge the gas phase. The rotating shaft 9 is used to drive the cylinder 6 and the filler layer 10 to rotate, so that the cold air is fully mixed with the hot saturated water vapor to be discharged, and to achieve rapid contact between the filler layer 10 and the condensed water droplets and rapid separation of the water droplets from the air, so as to achieve the characteristic of improving the processing capacity. The filler layer 5 described in the present invention can be provided with traditional filler particles or a wire mesh.
[0026] Furthermore, an annular water collection trough is provided at the lower portion of the cylinder 6. The annular water collection trough includes an annular bottom plate 11, which is disposed on the inner side of the bottom of the cylinder 6 and connected to the inner wall of the bottom of the cylinder 6. An annular water retaining plate 12 is provided on the inner side of the annular bottom plate 11. A water outlet 13 connected to the annular water collection trough is provided on the outer wall of the bottom of the cylinder 6. The rotation of the cylinder 6 and the packing layer 10 described in the present invention generates centrifugal force, causing water droplets to be thrown onto the inner wall of the cylinder 6 under the action of centrifugal force. The droplets then enter the annular water collection trough under the action of gravity and are collected. The annular water collection trough and the lower portion of the cylinder 6 can be an integral structure or a detachable structure. Preferably, the annular water collecting trough and the cylinder 1 are an integrated structure, one side of the annular bottom plate 11 is connected to the inner wall of the bottom of the cylinder 6, an annular water baffle 12 is provided on the inner side of the annular bottom plate 11, and the water outlet 13 is provided on the outer wall of the bottom of the cylinder 6, which is used to draw water out from the outside of the cylinder 6 to avoid wetting the related equipment at the bottom of the cylinder 6 and contact with the water-containing gas phase.
[0027] Furthermore, the height of the water outlet 13 is less than the height of the top of the annular water baffle 12. The above arrangement can prevent the annular water baffle 12 from overflowing.
[0028] Furthermore, there are multiple water outlets 13 , which are evenly distributed on the outer wall of the bottom of the cylinder 6 .
[0029] Further, refer to Figure 1 As shown, the outlet of the dry cold air channel 5 is set at the lower part of the cooling tower fan blade 3. When only the cooling tower fan blade 3 is set in the utility model, the dry cold air channel 5 is set at the lower part of the cooling tower fan blade 3 to achieve the purpose of inducing wind and preliminarily mixing the air with the hot saturated water vapor to be discharged.
[0030] Further, refer to Figure 2 、 3As shown, a mixer blade 14 for rapidly drawing air is provided on the rotating shaft 9 at the bottom of the bracket 7. Since a rotary packing mixer 4 is provided in the present invention, in order to improve the mixing efficiency and processing capacity of hot and cold air, the present invention is provided with a mixer blade 14 at the bottom of the rotary packing mixer 4 to enable air to quickly enter the rotary packing mixer 4; an outlet for a dry cold air channel 5 is provided between the mixer blade 14 and the cooling tower blade 3. When the mixer blade 14 is provided, the outlet for the dry cold air channel 5 is preferably provided between the mixer blade 14 and the cooling tower blade 3. The cooling tower blade 3 is used to drain the hot saturated water vapor inside the cooling tower body 1, and the mixer blade 14 is used to drain the cold air and fully mix it, so that the air quickly enters the rotary packing mixer 4 after mixing.
[0031] Further, refer to Figure 1 、 3 As shown, the middle portion of the cooling tower fan blade 3 is provided with a rotating shaft 15, and the rotating shaft 15 and the rotating shaft 9 are respectively connected to the output end of the dual output shaft commutator 16, and the input end of the dual output shaft commutator 16 is connected to the first motor 17. The utility model can use the first motor 17 to drive the cooling tower fan blade 3, the mixer blade 14 and the rotary filler mixer 4 to rotate simultaneously to achieve energy saving.
[0032] Further, refer to Figure 2 As shown, the central portion of the cooling tower fan blade 3 is provided with a rotating shaft 15, which is connected to the main shaft of the first motor 17; the rotating shaft 9 is connected to the main shaft of the second motor 18. The present invention can also adopt a method in which the first motor 17 drives the cooling tower fan blade 3 to rotate, and the second motor 18 drives the mixer blades 14 and the rotary filler mixer 4 to rotate, thereby achieving the characteristics of flexible adjustment of the rotation speed and adjusting the processing capacity according to actual working conditions.
[0033] The working principle of the present invention is as follows: the industrial circulating water is heat exchanged in the cooling tower body 1, and the hot saturated water vapor after heat exchange rises under the guidance of the cooling tower fan blades 3 and meets the cold air from the dry cold air channel 5. The two enter the rotating packing mixer 4 together, and the two are quickly and fully mixed in the rotating packing mixer 4 to reduce the temperature of the hot saturated water vapor. Part of the saturated hot water vapor is quickly condensed into small droplets. During the rotation of the rotating packing mixer 4, the packing layer 10 contacts and captures the above-mentioned small water droplets. After the packing layer 10 captures the water droplets, it is thrown onto the inner wall of the cylinder 6 under the action of centrifugal force. The water droplets enter the annular water collecting trough along the inner wall and are finally discharged into the cooling tower through the outlet 13; after the temperature is reduced, the gas phase continues to rise through the packing layer 10 of the rotating packing mixer 4 and is discharged from the exhaust port 2; the above process has the characteristics of large water-containing gas phase processing capacity, high processing efficiency, effective energy saving and avoidance of heat exchange cooling water waste. With 5000m3 / h cooling tower scale calculation, the water evaporation loss of conventional cooling tower is about 50~100m 3 / h, the saturated hot water gas temperature at the exhaust port 2 is 25-30°C; the use of the utility model can achieve a water saving rate of about 40%, and the amount of water that can be recycled is about 20-30m 3 / h, and the smoke elimination rate can reach 70-90%, and the water vapor temperature at the exhaust port 2 is reduced to 20-25°C.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for eliminating white mist in a cooling tower, comprising a cooling tower body (1), wherein an exhaust port (2) is provided at the top of the cooling tower body (1), and characterized in that: A cooling tower fan blade (3) for causing saturated hot water vapor inside the cooling tower to rise is provided at the lower part of the exhaust port (2); a rotating filler mixer (4) for mixing saturated hot water vapor and dry cold air is provided at the top of the cooling tower fan blade (3); a dry cold air channel (5) for communicating with an external connection is provided at a position of the rotating filler mixer (4) corresponding to the cooling tower body (1).
2. The device for eliminating white mist in a cooling tower according to claim 1, characterized in that: The rotary filling mixer (4) comprises a cylinder (6) which is connected vertically, a bracket (7) is provided on the inner wall of the cylinder (6), the bracket (7) is connected to a rotating shaft (9) provided at the center of the cylinder (6) through a bearing (8), and the rotating shaft (9) is connected to a power unit; A packing layer (10) is provided between the rotating shaft (9) and the inner wall of the cylinder (6).
3. The device for eliminating white mist in a cooling tower according to claim 2, characterized in that: The lower part of the cylinder (6) is provided with an annular water collecting groove, and the annular water collecting groove comprises an annular bottom plate (11), the annular bottom plate (11) is arranged on the inner side of the bottom of the cylinder (6) and connected to the inner wall of the bottom of the cylinder (6), and an annular water retaining plate (12) is arranged on the inner side of the annular bottom plate (11); A water outlet (13) which is in communication with the annular water collecting groove is provided on the outer wall of the bottom of the cylinder (6).
4. The device for eliminating white mist in a cooling tower according to claim 3, characterized in that: The water outlet (13) is arranged at a height smaller than the height of the top of the annular water baffle (12).
5. The device for eliminating white mist in a cooling tower according to claim 3, characterized in that: There are a plurality of water outlets (13) which are evenly distributed on the outer wall of the bottom of the cylinder (6).
6. The device for eliminating white mist in a cooling tower according to claim 1, characterized in that: The outlet of the dry cold air channel (5) is arranged at the lower part of the cooling tower fan blade (3).
7. The device for eliminating white mist in a cooling tower according to claim 2, characterized in that: A mixer blade (14) for rapid air induction is provided on the rotating shaft (9) at the lower part of the bracket (7).
8. The device for eliminating white mist in a cooling tower according to claim 7, characterized in that: An outlet of a dry cold air channel (5) is provided between the mixer blades (14) and the cooling tower blades (3).
9. The device for eliminating white mist in a cooling tower according to claim 2, characterized in that: The middle part of the cooling tower fan blade (3) is provided with a rotating shaft (15), the rotating shaft (15) and the rotating shaft (9) are respectively connected to the output end of the double output shaft commutator (16), and the input end of the double output shaft commutator (16) is connected to the first motor (17).
10. The device for eliminating white mist in a cooling tower according to claim 2, characterized in that: A rotating shaft (15) is mounted in the middle of the cooling tower fan blade (3), and the rotating shaft (15) is connected to the main shaft of the first motor (17); The rotating shaft (9) is connected to the main shaft of the second motor (18).