Efficient heat exchange fog dispersal module and cooling tower
By designing an efficient heat exchange and mist removal module in the cooling tower, the inclined structure of the diamond water blocking frame increases the contact area of the airflow, the problem of low heat exchange efficiency of the existing cooling tower is solved, and more efficient heat exchange and water-saving effects are achieved .
Patent Information
- Application Number
- CN202421098489.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The heat exchange efficiency of existing cooling towers is low, especially in winter, which leads to water loss and feather mist that affects the environment and traffic.
An efficient heat exchange and mist removal module was designed, using multiple stacked filler sheets to form wet and hot channels and dry cold channels. Intersecting upper and lower convex ribs are provided on the surface of the filler sheet, which adds a diamond-shaped water blocking frame. The edges of the diamond-shaped water blocking frame have an inclined structure with high middle and low ends, which increases the airflow contact area and improves heat exchange efficiency.
By increasing the contact area between the airflow and the rhombic water blocking frame, the heat exchange efficiency and condensation effect are improved, water loss and feather mist generation are reduced, and more efficient heat exchange and water-saving effects are achieved.
Smart Images
Figure CN222279420U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling towers, in particular to a high-efficiency heat exchange and mist elimination module and a cooling tower. Background Art
[0002] Conventional cooling towers are built by spraying hot water onto the surface of the packing to contact the cold air passing through the packing. The hot water and the cold air exchange sensible heat, and at the same time, part of the hot water is evaporated, that is, the latent heat of evaporation in the evaporated water vapor is discharged into the air, and finally the cooled water falls into the pool. Since the heat is mainly dissipated through the evaporation of water, there will be a large amount of water loss when the cooling tower is working, which accounts for 1.0% to 1.5% of the circulating water volume. In addition, in winter operation, the saturated hot and humid air that flows out of the cooling tower after the heat is dissipated will produce a large amount of plume after contacting the atmosphere, which will affect the surrounding environment and traffic.
[0003] In order to solve this problem, most manufacturers will install a heat exchanger under the air outlet of the cooling tower. The heat exchanger is composed of multiple filler sheets, which have independent wet hot channels and dry cold channels. When working, the wet hot saturated air passes through the wet hot channel from bottom to top, and the cold air outside the tower enters the dry cold channel from one side. During the flow of the above two streams of hot and cold air, heat exchange will occur, so that the water vapor in the wet hot air will condense, and the condensed water will fall to the bottom of the tower again to save water. At the same time, the condensed saturated wet hot air and the heated dry hot air are fully mixed in the air chamber to eliminate fog.
[0004] The Chinese patent document with publication number CN217818249U discloses a heat exchange and mist removal module for a cooling tower, which forms a plurality of grooves on the lower end surface of the main body by protruding a plurality of protrusions on the upper end surface of the main body, thereby increasing the contact area between the cold air and the surface of the main body and improving the heat exchange efficiency. During long-term actual use, the applicant found that the simple protrusion structure cannot significantly improve the heat exchange efficiency due to the limited contact area with the airflow, especially for severe winter, the heat exchange efficiency needs to be improved. Utility Model Content
[0005] The technical problem to be solved by the utility model is: in the prior art, the heat exchange efficiency of the heat exchange and defogging module needs to be improved, so it is necessary for the utility model to provide a high-efficiency heat exchange and defogging module;
[0006] It is even more necessary to provide a cooling tower with the above-mentioned high-efficiency heat exchange and mist elimination module.
[0007] The technical solution adopted by the utility model to solve the technical problem is: a high-efficiency heat exchange and demisting module, comprising a plurality of stacked filling sheets, wherein the filling sheets are spaced to form a wet heat channel and a dry cold channel, wherein upper convex ridges and lower convex ridges intersecting each other are respectively convexly arranged on two opposite surfaces of the filling sheets, wherein a heat exchange sheet is surrounded between the upper convex ridges and the lower convex ridges, wherein a heat exchange sheet is formed, wherein a plurality of rhombus-shaped water-blocking frames which are sequentially surrounded inside and outside are convexly arranged on the heat exchange sheet, wherein each side of the rhombus-shaped water-blocking frame comprises a first water-blocking strip and a second water-blocking strip which are connected to each other, wherein the connection portion of the first water-blocking strip and the second water-blocking strip forms a connection portion, wherein the connection portion of two adjacent sides of the rhombus-shaped water-blocking frame forms a docking portion, and the height of the connection portion on any side of the rhombus-shaped water-blocking frame is higher than the height of the docking portion.
[0008] Furthermore, a groove is provided on the surface of the heat exchange plate opposite to the diamond-shaped water blocking frame and corresponding to the diamond-shaped water blocking frame.
[0009] Furthermore, the surface of the heat exchange fin on which the diamond-shaped water-blocking frame is protruding is opened from the center of the middle diamond-shaped water-blocking frame and is gradually inclined downward outward.
[0010] Furthermore, each two adjacent packing sheets are rotated 90 degrees, and between the upper and lower adjacent packing sheets, the upper ridge on the packing sheet located at the bottom and the lower ridge on the packing sheet located at the top abut against each other.
[0011] Furthermore, the wet hot channel and the dry cold channel are perpendicular to each other.
[0012] A cooling tower, comprising the high-efficiency heat exchange and demisting module as described in any one of the above items, and further comprising a tower body, wherein the high-efficiency heat exchange and demisting module is installed in the tower body.
[0013] Furthermore, the high-efficiency heat exchange and demisting modules have multiple components and are staggered in the horizontal direction. In two adjacent high-efficiency heat exchange and demisting modules, the air inlet ends of the two wet heat channels are close to each other, and the air inlet ends of the two dry cold channels are close to each other. A plurality of isolation frames are installed inside the tower body, and the isolation frames are arranged corresponding to the air inlet ends of the dry cold channels. A dry cold air inlet channel connected to the dry cold channel is formed between the isolation frames, the high-efficiency heat exchange and demisting modules, and the side walls of the tower body.
[0014] Furthermore, the isolation frame includes two relatively arranged longitudinal plates and a transverse plate connected to the bottom of the two longitudinal plates. The longitudinal plates and the transverse plate are fixedly and sealedly connected to the two opposite side walls of the tower body. The side walls of the tower body are provided with a first air inlet connected to the dry cooling channel.
[0015] Furthermore, a moist heat air inlet channel is formed in the area within the tower body between two adjacent dry and cold air inlet channels, the moist heat air inlet channel is isolated from the dry and cold air inlet channel, the moist heat air inlet channel is arranged corresponding to the air inlet end of the moist heat channel, and a second air inlet port connected to the inner cavity of the tower body is opened on both side walls of the tower body.
[0016] Furthermore, a filler is installed in the tower body below the high-efficiency heat exchange and mist removal module and corresponding to the hot and humid air inlet channel, and a spray pipe is arranged above the filler.
[0017] The beneficial effect of the utility model is as follows: the high-efficiency heat exchange and mist elimination module or cooling tower of the utility model is provided with a diamond-shaped water-blocking frame on the heat exchange plate with flat filler, and the height of the connecting part on any one side of the diamond-shaped water-blocking frame is higher than the height of the butt joint part, so that any one side of the diamond-shaped water-blocking frame presents an inclined structure with a high middle and low ends, and compared with a horizontal structure, the side of the inclined structure on the diamond-shaped water-blocking frame can increase the area of the diamond-shaped water-blocking frame, so that when the airflow passes through the wet hot channel or the dry cold channel, it can ensure that the airflow is fully in contact with the diamond-shaped water-blocking frame, thereby increasing the contact area, which is beneficial to heat exchange and has a better condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0019] Figure 1 It is a three-dimensional diagram of the high-efficiency heat exchange and mist elimination module of the utility model;
[0020] Figure 2 yes Figure 1 An exploded view of the high-efficiency heat exchange and mist elimination module is shown;
[0021] Figure 3 yes Figure 1 A three-dimensional image of the high-efficiency heat exchange and mist elimination module from another perspective;
[0022] Figure 4 yes Figure 1 A partial enlarged view of point A in the high-efficiency heat exchange and mist elimination module shown;
[0023] Figure 5 yes Figure 3 A partial enlarged view of point B in the high-efficiency heat exchange and mist elimination module shown;
[0024] Figure 6 yes Figure 1 The front view of the high-efficiency heat exchange and mist elimination module shown;
[0025] Figure 7 yes Figure 1 The left side view of the high-efficiency heat exchange and mist elimination module is shown;
[0026] Figure 8It is a schematic diagram of the structure of the cooling tower of the present invention (the solid line path in the figure represents the flow direction of moist hot air, and the dotted line path represents the flow direction of dry cold air).
[0027] In the figure: 100, high-efficiency heat exchange and demisting module, 1, filler sheet, 101, wet heat channel, 102, dry cold channel, 11, upper convex membrane, 12, lower convex membrane, 13, heat exchange plate, 14, diamond water blocking frame, 141, first water blocking strip, 142, second water blocking strip, 143, connecting part, 144, docking part, 15, groove, 2, tower body, 21, second air inlet, 22, wind tube, 23, fan, 3, isolation frame, 31, longitudinal plate, 32, transverse plate, 30, dry cold air inlet channel, 40, wet hot air inlet channel, 5, filler, 6, spray pipe. DETAILED DESCRIPTION
[0028] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.
[0029] See also Figure 1-Figure 7 The utility model provides a high-efficiency heat exchange and demisting module 100, which is used to be installed in a cooling tower, and includes a plurality of stacked filler sheets 1, a wet heat channel 101 is formed between a filler sheet 1 in the middle and a filler sheet 1 on one side, and a dry cold channel 102 is formed between a filler sheet 1 in the middle and a filler sheet 1 on the other side, that is, a wet heat channel 101 and a dry cold channel 102 are formed between the filler sheets 1, and the wet heat channel 101 and the dry cold channel 102 are isolated from each other. When working, saturated wet hot air formed after heat exchange with hot water passes through the wet hot channel 101, and dry cold air outside the tower passes through the dry cold channel 102 via the dry cold channel 102. In this process, heat exchange occurs between the two airflows, so that the wet hot air is condensed, and the condensed water adheres to the filler sheet 1 and finally falls to the bottom of the cooling tower, thereby achieving water saving while effectively reducing the generation of plume mist.
[0030] An upper ridge 11 and a lower ridge 12 are respectively convexly provided on two opposite surfaces of the packing sheet 1. The upper ridges 11 have multiple and are parallel to each other, and the lower ridges 12 have multiple and are parallel to each other. The upper ridges 11 and the lower ridges 12 are cross-arranged, and each adjacent packing sheet 1 is rotated 90°. During installation, a packing sheet 1 is placed above the bottom packing sheet 1, and the upper packing sheet 1 is rotated 90° and connected to the lower packing sheet 1. At this time, the upper ridge 11 on the lower packing sheet 1 and the lower ridge 12 on the upper packing sheet 1 abut against each other, and the channel formed between the upper and lower packing sheets 1 and the corresponding upper ridges 11 and lower ridges 12 thereon constitute one of the wet heat channel 101 and the dry cold channel 102. When a packing sheet 1 is stacked on top of the packing sheet 1 above, a defogging module consisting of three packing sheets 1 is formed. The top packing sheet 1 is rotated 90° relative to the middle packing sheet 1. At this time, the upper ridge 11 on the middle packing sheet 1 and the lower ridge 12 on the top packing sheet 1 are abutted against each other, and the channel formed between the middle packing sheet 1, the top packing sheet 1 and the corresponding upper ridges 11 and lower ridges 12 thereon constitutes another one of the wet heat channel 101 and the dry cold channel 102.
[0031] In addition, the connection method between two adjacent packing sheets 1 can adopt the connection method between packing sheets in a heat exchange and demisting module for a cooling tower disclosed in the patent document with publication number CN217818249U, that is, the connection method of the concave platform and the convex platform, which will not be repeated here. At the same time, in order to avoid air leakage at the edges of two adjacent packing sheets 1, the bending portion (including the first bending sheet, the second bending sheet and the connecting sheet) structure in the above patent document can be set at the edge of the packing sheet 1, and the specific structure will not be repeated here.
[0032] The portion of the packing sheet 1 located between the two upper ridges 11 and the two lower ridges 12 forms a heat exchange sheet 13, and a plurality of rhombus-shaped water-blocking frames 14 are convexly provided on the heat exchange sheet 13, which are sequentially surrounded inside and outside. Each rhombus-shaped water-blocking frame 14 has four sides, and each side of the rhombus-shaped water-blocking frame 14 includes a first water-blocking strip 141 and a second water-blocking strip 142 connected to each other. The connection portion of the first water-blocking strip 141 and the second water-blocking strip 142 forms a connection portion 143, and the connection portion of two adjacent sides of the rhombus-shaped water-blocking frame 14 forms a docking portion 144, so that the flat surface of the packing sheet 1 Based on the laying direction, the height of the connecting portion 143 on any side of the diamond-shaped water-blocking frame 14 is higher than the height of the docking portion 144. In this way, any side of the diamond-shaped water-blocking frame 14 presents an inclined structure with a high middle and low ends. Compared with the horizontal structure, the side of the inclined structure on the diamond-shaped water-blocking frame 14 can increase the area of the diamond-shaped water-blocking frame 14, so that when the airflow passes through the wet and hot channel 101 or the dry and cold channel 102, it can ensure that the airflow is fully in contact with the diamond-shaped water-blocking frame 14, thereby increasing the contact area, which is beneficial to heat exchange and has a better condensation effect. In addition, by setting a plurality of diamond-shaped water-blocking frames 14 arranged inside and outside, the water-blocking strength is further improved, and the heat exchange efficiency is improved. Furthermore, by setting a plurality of diamond-shaped water-blocking frames 14, the structural strength of the packing sheet 1 is increased, and the packing sheet 1 is effectively prevented from being easily deformed or even damaged.
[0033] Furthermore, a groove 15 is provided on the surface of the heat exchanger fin 13 relative to the diamond-shaped water blocking frame 14, and the groove 15 can increase the surface area of the heat exchanger fin 13, and on the other hand, the groove 15 can reduce the thickness of the diamond-shaped water blocking frame 14, thereby achieving lightweight production and reducing production costs. In this embodiment, the heat exchanger fin 13 and the diamond-shaped water blocking frame 14 are an integrally formed structure.
[0034] As a preferred embodiment, based on the flat placement direction, the surface of the heat exchanger fin 13 on which the diamond-shaped water-blocking frame 14 is protruding is arranged to be gradually inclined downward from the center of the middle diamond-shaped water-blocking frame 14, thereby increasing the area of the heat exchanger fin 13, thereby increasing the contact area between the airflow and the heat exchanger fin 13, which is beneficial to improving the heat exchange efficiency.
[0035] In this embodiment, the filler sheet 1 is roughly a square sheet structure. When working, the demisting module is vertically installed in the cooling tower. The bottom of the demisting module of the wet and hot channel 101 and the dry and cold channel 102 are inclined upward and penetrate the demisting module, and the wet and hot channel 101 and the dry and cold channel 102 are perpendicular to each other.
[0036] See also Figure 8The utility model also provides a cooling tower, including the above-mentioned high-efficiency heat exchange and demisting module 100, and also includes a tower body 2. The high-efficiency heat exchange and demisting module 100 is fixedly installed inside the tower body 2. The high-efficiency heat exchange and demisting module 100 has multiple and is staggered in the horizontal direction. In two adjacent high-efficiency heat exchange and demisting modules 100, the air inlet ends of the two wet and hot channels 101 are close to each other, and the air inlet ends of the two dry and cold channels 102 are close to each other. A plurality of isolation frames 3 are installed inside the tower body 2, and the isolation frames 3 are arranged corresponding to the air inlet ends of the dry and cold channels 102. A dry and cold air inlet channel 30 connected to the dry and cold channel 102 is formed between the isolation frame 3, the high-efficiency heat exchange and demisting module 100 and the side wall of the tower body 2, and the dry and cold air inlet channel 30 is connected to the external dry and cold air. During operation, the external dry and cold air enters the dry and cold channel 102 through the dry and cold air inlet channel 30.
[0037] As a preferred embodiment, the isolation frame 3 includes two oppositely disposed longitudinal plates 31 and a transverse plate 32 connected to the bottom of the two longitudinal plates 31. The longitudinal plates 31 and the transverse plates 32 are both opposite to the two side walls (with Figure 8 The direction shown is for reference, and the two side walls are two opposite side walls perpendicular to the paper plane) and are fixedly sealed and connected. A first air inlet (not shown in the figure) connected to the dry cooling air inlet channel 30 is provided on the side wall of the tower body 2. In this way, when working, the dry cooling air outside the tower enters the dry cooling air inlet channel 30 through the first air inlet, and then flows upward into the dry cooling channel 102 of the high-efficiency heat exchange and demisting module 100.
[0038] In addition, a moist heat air inlet channel 40 is formed in the area between two adjacent dry cold air inlet channels 30 in the tower body 2. The moist heat air inlet channel 40 is isolated from the dry cold air inlet channel 30 by the isolation frame 3. The moist heat air inlet channel 40 is arranged corresponding to the air inlet end of the moist heat channel 101. Figure 8 The direction shown is for reference only. The two side walls are the left and right side walls of the tower body 2. A second air inlet 21 connected to the inner cavity of the tower body 2 is provided. In addition, a filler 5 is installed in the tower body 2 below the high-efficiency heat exchange and defogging module 100 and corresponding to the hot and humid air inlet channel 40, and a spray pipe 6 is arranged above the filler 5. During operation, the circulating water is sprayed onto the filler 5 through the spray pipe 6, and the tower body air enters the tower through the second air inlet 21, then flows upward through the filler 5, exchanges heat with the spray water to form saturated hot and humid air, and then enters the hot and humid channel 101 of the high-efficiency heat exchange and defogging module 100 through the hot and humid air inlet channel 40, and exchanges heat with the dry and cold air in the dry and cold channel 102, thereby condensing the saturated hot and humid air, achieving water saving while also effectively reducing the formation of plume.
[0039] Furthermore, a wind tube 22 is installed on the top of the tower body 2, and a fan 23 is installed in the wind tube 22. When working, the fan 23 is started. Under the operation of the fan 23, the tower air is forcibly sent into the interior of the tower body 2 through the first air inlet and the second air inlet 21 to achieve air convection.
[0040] In the high-efficiency heat exchange and mist removal module of the utility model, a diamond-shaped water-blocking frame 14 is arranged on the heat exchange plate 13 of the packing plane 1, and the height of the connecting portion 143 on any side of the diamond-shaped water-blocking frame 14 is higher than the height of the docking portion 144. In this way, any side of the diamond-shaped water-blocking frame 14 presents an inclined structure with a high middle and low ends. Compared with the horizontal structure, the side of the inclined structure on the diamond-shaped water-blocking frame 14 can increase the area of the diamond-shaped water-blocking frame 14, so that when the airflow passes through the wet hot channel 101 or the dry cold channel 102, it can ensure that the airflow is fully in contact with the diamond-shaped water-blocking frame 14, thereby increasing the contact area, which is beneficial to heat exchange and has a better condensation effect.
[0041] The cooling tower of the utility model has all the technical features of the above-mentioned high-efficiency heat exchange and demisting module, and therefore has the same technical effect as the above-mentioned high-efficiency heat exchange and demisting module.
[0042] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the scope of the utility model through the above description. The technical scope of this utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A high-efficiency heat exchange and mist removal module, comprising a plurality of stacked filler sheets, wherein the filler sheets are spaced to form a wet heat channel and a dry cold channel, characterized in that: Upper convex ridges and lower convex ridges intersecting each other are respectively convexly provided on two opposite surfaces of the packing sheet, and a heat exchange plate is formed between the upper convex ridges and the lower convex ridges. A plurality of rhombus-shaped water-blocking frames which are sequentially surrounded inside and outside are convexly provided on the heat exchange plate. Each side of the rhombus-shaped water-blocking frame includes a first water-blocking strip and a second water-blocking strip connected to each other, and the connection portion of the first water-blocking strip and the second water-blocking strip forms a connecting portion. The connection between two adjacent sides of the rhombus-shaped water-blocking frame forms a docking portion, and the height of the connecting portion on any side of the rhombus-shaped water-blocking frame is higher than the height of the docking portion.
2. The high-efficiency heat exchange and mist elimination module according to claim 1, characterized in that: A groove is provided on the surface of the heat exchange plate opposite to the diamond-shaped water blocking frame and corresponding to the diamond-shaped water blocking frame.
3. The high-efficiency heat exchange and mist elimination module according to claim 2, characterized in that: The surface of the heat exchange plate on which the diamond-shaped water-blocking frame is protruding is opened from the center of the middle diamond-shaped water-blocking frame and is gradually inclined downward outward.
4. The high-efficiency heat exchange and mist elimination module according to claim 1, characterized in that: Every two adjacent packing sheets are arranged to be rotated 90 degrees, and between the upper and lower adjacent packing sheets, the upper ridge on the packing sheet located at the lower side and the lower ridge on the packing sheet located at the upper side abut against each other.
5. The high-efficiency heat exchange and mist elimination module according to claim 1, characterized in that: The wet hot channel and the dry cold channel are perpendicular to each other.
6. A cooling tower, characterized in that: The cooling tower comprises the high-efficiency heat exchange and demisting module according to any one of claims 1 to 5, and the cooling tower further comprises a tower body, in which the high-efficiency heat exchange and demisting module is installed.
7. The cooling tower according to claim 6, characterized in that: The high-efficiency heat exchange and demisting modules are provided in plurality and are staggered in sequence in the horizontal direction. In two adjacent high-efficiency heat exchange and demisting modules, the air inlet ends of the two wet heat channels are close to each other, and the air inlet ends of the two dry cold channels are close to each other. A plurality of isolation frames are installed inside the tower body, and the isolation frames are arranged corresponding to the air inlet ends of the dry cold channels. A dry cold air inlet channel connected to the dry cold channel is formed between the isolation frames, the high-efficiency heat exchange and demisting modules and the side walls of the tower body.
8. The cooling tower according to claim 7, characterized in that: The isolation frame includes two oppositely arranged longitudinal plates and a transverse plate connected to the bottom of the two longitudinal plates. The longitudinal plates and the transverse plate are fixedly and sealedly connected to the two opposite side walls of the tower body. The side walls of the tower body are provided with a first air inlet connected to the dry cooling channel.
9. The cooling tower according to claim 7, characterized in that: A moist heat air inlet channel is formed in the area of the tower body between two adjacent dry and cold air inlet channels. The moist heat air inlet channel is isolated from the dry and cold air inlet channel. The moist heat air inlet channel is arranged corresponding to the air inlet end of the moist heat channel. Second air inlets communicating with the inner cavity of the tower body are provided on both side walls of the tower body.
10. The cooling tower according to claim 9, characterized in that: A filler is installed in the tower body below the high-efficiency heat exchange and mist elimination module and corresponding to the hot and humid air inlet channel, and a spray pipe is arranged above the filler.