Water spraying heat dissipation cooling tower and filler thereof

Abstract

The utility model discloses a water spray heat dissipation cooling tower and packing thereof, the water spray heat dissipation cooling tower comprises a shell and the packing arranged in the shell, the packing is formed by stacking packing sheets, water enters from the top of the shell, water exits from the bottom of the shell, air enters from the left side and the right side of the shell, air exits from the top of the shell, and a fan for exhausting air upwards is arranged in the middle of the top surface of the shell. Water inlet distributors are arranged on the left side and the right side of the fan respectively, each set of filler is located below the corresponding water inlet distributor, each set of filler is composed of filler pieces which are sequentially stacked front and back, each filler piece is of a parallelogram structure, the upper edge and the lower edge of each filler piece are horizontal edges, and the left edge and the right edge of each filler piece are bevel edges. And the four edges of each packing sheet are corrugated edges which are arranged in a front-back convex-concave mode. Considering that water flow generates inward oblique flow due to pressure generated in the air inlet direction, the parallelogram-shaped packing sheets are matched, the packing sheets are complementary in the water spraying areas of the air inlet end and the air outlet end, and heat exchange of air and water is fully utilized.

Description

Technical Field

[0001] This utility model relates to a water-spraying cooling tower and its packing material, belonging to the technical field of heat exchange equipment, especially the technical field of cooling towers. Background Technology

[0002] A water-spraying cooling tower is a commonly used type of cooling tower. It consists of a shell and packing material installed inside the shell. Cooling water is sprayed onto the packing material and then passes over it, achieving heat dissipation and temperature reduction. The packing material inside this type of cooling tower is composed of multiple water-spraying packing plates stacked sequentially.

[0003] Existing technologies for water-collecting herringbone corrugated packing sheets each have their own advantages and disadvantages, generally categorized into several types: water-collecting herringbone corrugated packing sheets, dot-wave corrugated packing sheets, inclined corrugated packing sheets, suspended herringbone corrugated packing sheets, and suspended spherical corrugated water-collecting packing sheets. Water-collecting herringbone corrugated packing sheets, dot-wave corrugated packing sheets, and inclined corrugated packing sheets all cannot be suspended and must be bonded with adhesives, resulting in difficulties in cleaning. Suspended herringbone corrugated packing sheets and suspended spherical corrugated water-collecting packing sheets, while fixed by suspension without adhesives, suffer from low cooling efficiency. While water-collecting herringbone corrugated packing sheets and suspended spherical corrugated water-collecting packing sheets can collect water, the high wind resistance at the water collection edge affects the cooling tower airflow, leading to increased net pressure in the cooling tower. Furthermore, water-collecting herringbone corrugated packing sheets, dot-wave corrugated packing sheets, and suspended herringbone corrugated packing sheets all have corrugated internal corners, which, due to the numerous dead angles, are prone to clogging problems. None of these packing plates fully utilize the area of ​​the water-spraying heat dissipation packing plate. Although the spherical wave has a large surface area, it has low water resistance and a faster water drop speed compared to the elliptical wave. The existing water-spraying packing plate waveform is not better, and it does not reduce the wind resistance of the water-collecting packing plate, nor does it fully utilize the heat dissipation area of ​​the water-spraying packing plate.

[0004] The packing plates in the existing technology are all square structures. After the packing plates are installed in the shell, the cooling water sprayed from the top of the packing tower will be deflected at the air inlet due to the influence of the air inlet. As a result, the lower packing at the air inlet is not sprayed with cooling water, which causes waste of this part of the packing and affects the cooling efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a water-spraying cooling tower and its packing material, in order to solve the technical problem that the lower packing material at the air inlet of the existing water-spraying cooling tower is not sprayed with cooling water, resulting in wasted packing material area and affecting cooling efficiency.

[0006] The present invention relates to a water-spraying cooling tower, which adopts the following technical solution: A water-spraying cooling tower includes a shell and packing material disposed within the shell. The packing material is composed of stacked packing sheets. Water enters from the top of the shell and exits from the bottom. A fan for upward air extraction is provided at the top of the shell. Air inlets are located on the left and right sides of the shell. The front and rear sides of the shell are closed structures. The fan is located in the middle of the top surface of the shell. Water distributors are provided on the left and right sides of the fan. The packing material consists of two sets, each set located below each water distributor. Each set of packing material consists of packing sheets stacked sequentially. In each packing group, the foremost packing piece contacts the inner front wall of the shell, and the last packing piece contacts the inner rear wall of the shell. The packing pieces adopt a parallelogram structure, with the top and bottom sides being horizontal and the left and right sides being inclined. The inclined sides slope outward from bottom to top. All four sides of the packing pieces are corrugated edges with convex and concave arrangements. The corrugated edges of two adjacent packing pieces are staggered, forming a honeycomb-shaped water inlet and outlet channel on the top and bottom, and a honeycomb-shaped air inlet and outlet channel on the left and right. The acute angle of the parallelogram of the packing pieces is between 83° and 87°.

[0007] Inside the housing, below each water inlet distributor, there are two hanging rods. Each hanging rod is horizontally positioned and extends in the front-to-back direction. Both ends of each hanging rod are fixed to the frame of the housing. Each packing plate has two through holes at the same position for the hanging rods to pass through.

[0008] The packing sheet has convex and concave water-dividing edges on both the upper and lower edges, and water-blocking inclined trapezoidal waves on both the left and right edges. Packing spacers are distributed on one side of the packing sheet. Double-sided elliptical waves are distributed on both sides of the packing sheet, and dotted small spherical waves are provided in the blank space between the double-sided elliptical waves.

[0009] The water inlet distributor includes a water spray tray, which has a groove structure with water distribution holes evenly distributed on the bottom surface. A water inlet pipe connector is fixed in the middle of the water spray tray. The water inlet pipe connector includes a top plate and two side plates. The upper parts of the two side plates are integrally connected to the left and right sides of the top plate, and the lower parts are fixed in the water spray tray. The space between the two side plates is a water inlet channel. A concave bottom groove is fixed on the bottom surface of the top plate. A pipe hole for connecting to the water inlet pipe is opened on the top plate above the bottom groove.

[0010] The left and right sides of the shell are open structures, and cross-shaped tie rods are provided at the open structures.

[0011] The bottom of the shell is provided with a packing support mesh, and there is a gap between the support mesh and the bottom surface of the shell.

[0012] The packing material of this utility model's water-spraying cooling tower adopts the following technical solution: A packing material for a water-spraying cooling tower is composed of stacked packing sheets. The packing sheets adopt a parallelogram structure, with the top and bottom sides being horizontal and the left and right sides being inclined. The inclined sides slope outward from bottom to top. All four sides of the packing sheets are corrugated edges with front and back convex and concave arrangements. The corrugated edges of two adjacent packing sheets are staggered, forming a honeycomb-shaped water inlet and outlet channel on the top and bottom of the packing, and a honeycomb-shaped air inlet and outlet channel on the left and right sides. The acute angle of the parallelogram of the packing sheets is between 83° and 87°.

[0013] The acute angle of the parallelogram of the packing sheet is 85.8°.

[0014] Each packing plate has two perforations at the same location for the hanging rod to pass through.

[0015] The packing sheet has convex and concave water-dividing edges on both the upper and lower edges, and water-blocking inclined trapezoidal waves on both the left and right edges. Packing spacers are distributed on one side of the packing sheet. Double-sided elliptical waves are distributed on both sides of the packing sheet, and dotted small spherical waves are provided in the blank space between the double-sided elliptical waves.

[0016] The beneficial effects of this utility model are as follows: The packing material in the cooling water heat dissipation tower of this utility model is composed of multiple packing plates. The overall shape of the packing plate is a parallelogram, and each of its air inlet and air outlet sides is inclined. The water flows from top to bottom. The air inlet is affected by the air inlet pressure, and the water flow on the packing plate generates an inward oblique flow, which is exactly consistent with the parallelogram-shaped water-spraying heat dissipation packing plate. The lower outer area of ​​the air inlet side of the packing plate is a waterless area, and the lower inner area of ​​the air outlet side of the packing plate is a water-spraying area (this area serves as a water-spraying thickening area). Therefore, this utility model moves the waterless area on the air inlet side of the packing material in the prior art to the lower part of the air outlet side, so that the heat dissipation area of ​​the water-spraying heat dissipation packing plate is not lost, the heat dissipation area is fully utilized, and the cooling energy of the cooling tower is greatly improved.

[0017] Preferably, the packing sheet is suspended on the hanging rod by perforation, which has the advantages of allowing the packing to be suspended and making it easy to install and remove.

[0018] Preferably, the upper and lower edges of the packing sheet are convex and concave water-dividing edges, and the left and right edges are water-blocking inclined trapezoidal waves. The surface of the hot packing sheet is elliptical wave and dotted small spherical wave, without sharp corners or dead corners. This solves the problem of preventing blockage of the cooling tower water-spraying heat dissipation packing, thereby achieving the purpose of preventing blockage, preventing water drift, preventing water splashing, and saving water. Moreover, the cooling water can form a water film on the packing sheet, which prolongs the water flow time, reduces lateral wind resistance, and reduces wind loss, thereby achieving the purpose of energy saving.

[0019] Preferably, the water distribution plate with water distribution holes helps to achieve uniform water distribution, and the cooling water can enter the packing more evenly.

[0020] Preferably, the left and right sides of the housing are open to maximize the air intake and exhaust volume, and tie rods are installed on the left and right sides of the housing to make the overall housing more stable.

[0021] Preferably, the support mesh set at the bottom of the shell is beneficial for filtering sewage and debris, reducing the noise of water falling, and supporting the packing material to make it more stable. Attached Figure Description

[0022] Figure 1 This is a plan view of a water-spraying cooling tower according to an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 Side view;

[0024] Figure 3 yes Figure 1 Rear view;

[0025] Figure 4 yes Figure 1 Top view;

[0026] Figure 5 yes Figure 4 Schematic diagram of the central water inlet pipe installation components;

[0027] Figure 6 yes Figure 1 A schematic diagram of a single packing sheet in a medium-density packing system;

[0028] Figure 7 yes Figure 6 Cross-sectional views of the filler at different locations along the longitudinal direction;

[0029] Figure 8 yes Figure 6 Cross-sectional views of the filler at different positions in the transverse direction.

[0030] In the diagram: 1-Shell, 1.1-Hanging rod, 1.2-Tie rod, 1.3-Drain hole, 1.4-Inspection door, 1.5-Support mesh, 2-Filling material, 2.1-Concave-convex water distribution edge, 2.2-Water-blocking inclined wave, 2.3-Perforation, 2.4-Filling material partition, 2.5-Bidirectional elliptical wave, 2.6-Dotted small ball wave, 2.7-Identification area, 3-Fan, 4-Water inlet distributor, 4.1-Water spray tray, 4.2-Water distribution hole, 4.3-Pipe hole, 4.4-Water inlet pipe installation plug, 4.5-Top plate, 4.6-Shell enclosure plate. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 5As shown, an embodiment of the water-spraying cooling tower of this utility model includes a shell 1 and packing 2 disposed within the shell 1. The packing 2 is composed of stacked packing sheets. Water enters from the top of the shell 1 and exits from the bottom. A fan 3 for upward air extraction is provided at the top of the shell 1. Air inlets are located on the left and right sides of the shell 1. The front and rear sides of the shell 1 are closed structures, formed by shell sealing plates 4.6 on the front and rear sides of the shell. The fan 3 is located in the middle of the top surface of the shell 1. Water inlet distributors 4 are provided on the left and right sides of the fan 3. There are two sets of packing 2, each set of packing 2 located below each water inlet distributor 4. Each set of packing 2 is composed of packing sheets stacked sequentially. The foremost packing sheet in each set of packing 2 contacts the inner wall of the front side of the shell 1, and the last packing sheet contacts the inner wall of the rear side of the shell 1. The structure of a single packing sheet is as follows: Figure 6 As shown, the packing sheet adopts a parallelogram structure. The top and bottom sides of the packing sheet are horizontal, and the left and right sides are inclined. The inclined sides slope outward from bottom to top. All four sides of the packing sheet are corrugated edges with convex and concave designs. The corrugated edges of two adjacent packing sheets are staggered, forming a honeycomb-shaped water inlet and outlet channel at the top and bottom, and a honeycomb-shaped air inlet and outlet channel at the left and right. The acute angle of the parallelogram of the packing sheet is between 83° and 87°. In this embodiment, the acute angle of the parallelogram of the packing sheet is 85.8°. The top and bottom edges of the packing sheet are convex and concave water-dividing edges 2.1, and the left and right edges are water-blocking inclined trapezoidal waves 2.2. Packing spacers 2.4 are distributed on one side of the packing sheet; double-sided elliptical waves 2.5 are distributed on both sides of the packing sheet, and dotted small spherical waves 2.6 are provided in the blank spaces between the double-sided elliptical waves 2.5.

[0033] Inside the housing 1, below each water inlet distributor 4, there are two hanging rods 1.1 respectively. Each hanging rod is horizontally set and extends in the front-to-back direction. The two ends of each hanging rod 1.1 are fixed to the frame of the housing 1 respectively. Each packing plate has two through holes 2.3 at the same position for the hanging rods 1.1 to pass through.

[0034] like Figure 4 As shown, a top sealing plate 4.5 is provided in the middle area of ​​the top of the shell, the fan 3 is installed on the top sealing plate 4.5, and the water inlet distributor 4 is located on the left and right sides of the two top sealing plates 4.5 respectively. Figure 4 and Figure 5As shown, the water inlet distributor 4 includes a water spray tray 4.1 extending front and rear. The water spray tray 4.1 adopts a groove structure with water distribution holes 4.2 evenly distributed on the bottom surface. A water inlet pipe connector 4.4 is fixed in the middle of the water spray tray 4.1. The water inlet pipe connector 4.4 includes a top plate and two side plates. The upper parts of the two side plates are integrally connected to the left and right sides of the top plate, and the lower parts are fixed in the water spray tray 4.1. The space between the two side plates 4.6 is a water inlet channel. A concave bottom groove is fixed on the bottom surface of the top plate 4.5. A pipe hole 4.3 for connecting to the water inlet pipe is opened on the top plate above the bottom groove.

[0035] The left and right sides of the shell are open structures, with cross-shaped tie rods at the open structures. A packing support mesh 1.5 is provided at the bottom of the shell, with a gap between the support mesh 1.5 and the bottom surface of the shell. Drainage holes 1.3 are located in the middle of the bottom of the front and rear sides of the shell. An inspection door 1.4 is located on the rear side of the shell, between two sets of packing material.

[0036] In this invention, the packing sheet is parallelogram-shaped with an acute angle of 85.8°. Its length in the left-right direction is 930mm, and its height is 450mm~940mm (preferably 700~850mm). The distance between the sheet surfaces is 16mm~22mm. In this embodiment, the height of the packing sheet is 780mm, and the distance between the sheet surfaces is 16mm. The width of the water-retaining inclined trapezoidal wave 2.2 is 70mm, the slope is 30°, its waveform is trapezoidal, and its module is 75mm~85mm. In this embodiment, the width of the water-retaining inclined trapezoidal wave 2.2 is 70mm, the slope is 30°, and its waveform is trapezoidal with a module of 75mm~85mm (preferably 80mm). The surface of the packing sheet has an identification area 2.7, where the company name, trademark, or product model can be marked. The diameter of the perforations 2.3 on the packing sheet is 30mm~40mm. In this embodiment, the diameter of the perforation 2.3 is 34mm. When the packing sheets are threaded onto the hanging rod one after the other, the two ends of the packing form a honeycomb-like surface, which is neat and beautiful.

[0037] The operation process and working principle of the packed tower in this embodiment are as follows: Under the action of the fan 3 at the top of the shell 1, the entire packed tower receives air from the left and right sides of the shell and exits air from the top. Cooling water is evenly distributed from the top water inlet distributor and falls into the packing under its own weight. The concave-convex water distribution edge 2.1 catches the automatically falling cooling water and distributes it to both sides of the packing plate, forming an equal water film on both sides of the packing plate. The cooling water flows downwards under its own weight to the transverse double-sided elliptical wave 2.5 and dot-shaped small spherical wave 2.6 wave surface, which slows down the water flow speed and prolongs the time it takes to pass through the double-sided elliptical wave from top to bottom. Due to the increased surface area of ​​the elliptical wave, the unfolded area per unit area can be increased by 33%~43% compared to the flat area, thereby increasing the heat dissipation area and improving the heat exchange time and area between the cooling water and the transverse air intake. This significantly increases the drop in cooling water temperature and achieves a better cooling effect. When the cooling water is affected by the transverse air intake, the water-blocking oblique wave 2.2 prevents the cooling water from drifting and splashing out, thus achieving a water-saving effect. At the same time, the air outlet end of the packing is also affected by the water-blocking oblique wave 2.2; the small water droplets on the surface of the packing will not be sucked away by the wind from the tower top fan. This also contributes to water conservation, resulting in a water drift rate of ≤0.0009%. The heat sink is parallelogram-shaped, with an angle of 4.2° between its air inlet side and the vertical direction. Under the action of the fan, the lower part of the packing at the air inlet is dry, while the lower part at the air outlet is thickened with water. The angled area at the lower part of the air outlet serves as the thickened area. Therefore, compared with the prior art, this invention moves the dry area of ​​the packing to the air outlet, and the water spray areas of the packing plates at the air inlet and outlet are complementary, making the entire packing rationally distributed and fully utilizing the heat exchange between air and water to achieve a better cooling effect. Because the surface of the packing is elliptical and wavy, without dead corners or sharp edges, it is not easy to accumulate scale and clog. If there are scale lumps and debris, they can be filtered out by the filter screen, preventing the packing from clogging. When the cooling water passes through the filter screen, the splashing sound caused by the cooling water falling directly onto the water surface of the bottom water tray is reduced, which can reduce the noise by 3-5 decibels.

[0038] In summary, this invention considers the pressure generated by the inward airflow causing the water to flow in an inward oblique direction. Combined with parallelogram-shaped packing sheets, the surface area of ​​the packing sheets is fully utilized. Furthermore, the double-sided elliptical waves and dotted small spherical wave surfaces on the heat sink increase the cooling specific surface area, slow down the water flow rate, and reduce wind loss. It effectively combines the bidirectional elliptical waves with good cooling effect with the inclined trapezoidal waves with good water collection effect, low wind resistance, low wind loss, and low static pressure. It has the advantages of high water collection efficiency, low wind resistance, low wind loss, anti-clogging, water saving (drift rate ≤0.0009%), and good cooling tower effect.

[0039] The above description is only a preferred embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the utility model, based on the technical solution and the inventive concept of the utility model, are covered within the protection scope of the utility model.

Claims

1. A water-spraying cooling tower, comprising a shell and packing material disposed within the shell, the packing material being composed of stacked packing sheets, water inlet at the top of the shell and water outlet at the bottom, a fan for upward air extraction at the top of the shell, air inlets on the left and right sides of the shell, and a closed structure on the front and rear sides of the shell, characterized in that: The fan is located in the middle of the top surface of the casing. Water inlet distributors are provided on the left and right sides of the fan. There are two sets of packing material, each set located below each water inlet distributor. Each set of packing material consists of packing plates stacked one after the other. The foremost packing plate in each set contacts the inner wall of the front side of the casing, and the last packing plate contacts the inner wall of the rear side of the casing. The packing plates adopt a parallelogram structure. The top and bottom sides of the packing plate are horizontal, and the left and right sides are inclined. The inclined sides slope outward from bottom to top. All four sides of the packing plate are corrugated edges with convex and concave designs. The corrugated edges of two adjacent packing plates are staggered, so that the packing material forms a honeycomb-shaped water inlet and outlet channel at the top and bottom, and a honeycomb-shaped air inlet and outlet channel at the left and right sides. The acute angle of the parallelogram of the packing plate is between 83° and 87°.

2. The water-spraying cooling tower according to claim 1, characterized in that: Inside the housing, below each water inlet distributor, there are two hanging rods. Each hanging rod is horizontally positioned and extends in the front-to-back direction. Both ends of each hanging rod are fixed to the frame of the housing. Each packing plate has two through holes at the same position for the hanging rods to pass through.

3. The water-spraying cooling tower according to claim 1, characterized in that: The packing sheet has convex and concave water-dividing edges on both the upper and lower edges, and water-blocking inclined trapezoidal waves on both the left and right edges. Packing spacers are distributed on one side of the packing sheet. Double-sided elliptical waves are distributed on both sides of the packing sheet, and dotted small spherical waves are provided in the blank space between the double-sided elliptical waves.

4. The water-spraying cooling tower according to claim 1, characterized in that: The water inlet distributor includes a water spray tray, which has a groove structure with water distribution holes evenly distributed on the bottom surface. A water inlet pipe connector is fixed in the middle of the water spray tray. The water inlet pipe connector includes a top plate and two side plates. The upper parts of the two side plates are integrally connected to the left and right sides of the top plate, and the lower parts are fixed in the water spray tray. The space between the two side plates is a water inlet channel. A concave bottom groove is fixed on the bottom surface of the top plate. A pipe hole for connecting to the water inlet pipe is opened on the top plate above the bottom groove.

5. The water-spraying cooling tower according to claim 1, characterized in that: The left and right sides of the shell are open structures, and cross-shaped tie rods are provided at the open structures.

6. The water-spraying cooling tower according to claim 1, characterized in that: The bottom of the shell is provided with a packing support mesh, and there is a gap between the support mesh and the bottom surface of the shell.

7. A packing material for a water-spraying cooling tower, which is composed of stacked packing sheets, characterized in that: The packing sheet adopts a parallelogram structure. The top and bottom sides of the packing sheet are horizontal, and the left and right sides are inclined. The inclined sides slope outward from bottom to top. All four sides of the packing sheet are corrugated edges with front and back convex and concave arrangements. The corrugated edges of two adjacent packing sheets are staggered, so that the packing sheet forms a honeycomb-shaped water inlet and outlet channel at the top and bottom, and a honeycomb-shaped air inlet and outlet channel at the left and right. The acute angle of the parallelogram of the packing sheet is between 83° and 87°.

8. The packing material of the water-spraying cooling tower according to claim 7, characterized in that: The acute angle of the parallelogram of the packing sheet is 85.8°.

9. The packing material of the water-spraying cooling tower according to claim 7, characterized in that: Each packing plate has two perforations at the same location for the hanging rod to pass through.

10. The packing material of the water-spraying cooling tower according to claim 7, characterized in that: The packing sheet has convex and concave water-dividing edges on both the upper and lower edges, and water-blocking inclined trapezoidal waves on both the left and right edges. Packing spacers are distributed on one side of the packing sheet. Double-sided elliptical waves are distributed on both sides of the packing sheet, and dotted small spherical waves are provided in the blank space between the double-sided elliptical waves.

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