Water-saving efficient closed cooling tower

Abstract

The application relates to a water-saving and high-efficiency closed cooling tower, which comprises a cooling tower body, the cooling tower body comprises a water collector and a fan located above the water collector, the water collector comprises a plurality of water collecting units arranged closely, each water collecting unit comprises a plurality of wave-shaped water collecting plates arranged in parallel and spaced, the lower end of each wave-shaped water collecting plate is arranged vertically, and the upper end is arranged at an angle with the vertical direction; each water collecting unit is arranged in a rotating mode, and the rotating direction is opposite to the rotating direction of the fan. The application can solve the problem of poor water collecting effect.

Description

Technical Field

[0001] This invention relates to the field of cooling towers, and more specifically to a water-saving and high-efficiency closed-loop cooling tower. Background Technology

[0002] A closed-circuit cooling tower mainly consists of a tower body, air duct, fan, water collector, spray pipes, coils, water tank, and water pump. The coils carry a medium, and three fluids operate in different ways within the tower: the medium inside the pipes (usually cooling water, which cannot come into contact with the outside environment to avoid impurities), air, and spray water. The medium inside the pipes transfers heat to the spray water and air outside the pipes through the pipe walls, then re-enters the industrial system to absorb heat, ensuring stable operation. The spray water outside the pipes absorbs heat, which is then carried away by the flowing air, but it also carries away some small water droplets. To reduce this loss, a water collector is installed at the top of the tower to intercept the water droplets carried by the air. However, existing water collectors typically have their outlets pointing vertically upwards, resulting in poor water collection and wasted water resources. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a water-saving and high-efficiency closed cooling tower to solve the problem of poor water collection effect.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a water-saving and high-efficiency closed cooling tower, comprising a cooling tower body, the cooling tower body including a water collector and a fan located above the water collector, the water collector including a plurality of closely arranged water collection units, the water collection unit including a plurality of corrugated water collection plates arranged in parallel and spaced apart, the lower end of the corrugated water collection plate being vertically arranged, and the upper end being arranged at an angle to the vertical direction; each water collection unit is arranged in a rotating manner, the rotation direction being opposite to the direction of rotation of the fan.

[0005] Furthermore, the water collection unit also includes a support frame, which includes two opposing structural support plates and two opposing water collection plate support plates. The two structural support plates and the two water collection plate support plates together form a square structure. Multiple water collection plate grooves are arranged side by side at intervals on the water collection plate support plates, and the corrugated water collection plates are inserted into the water collection plate grooves.

[0006] To further improve the water collection effect, a baffle plate is provided on the corrugated water collection plate.

[0007] Furthermore, the cooling tower body also includes a tower body, air duct, spray pipes, water tank, coils, and water pump; wherein,

[0008] The air duct is installed at the upper opening of the tower body, and the fan is installed inside the air duct;

[0009] The water collector, the spray pipe, and the coil are installed in the tower body from top to bottom;

[0010] The tower body has an air inlet on its side wall, and the air inlet is located below the coil.

[0011] The water tank is located at the bottom of the tower body, the inlet of the water pump is connected to the water tank, and the outlet is connected to the spray pipe.

[0012] Furthermore, to prevent the coil from deforming due to uneven temperature distribution, the air resistance at the left and right ends of the coil is less than that at the middle section.

[0013] The specific structure of a coil with good heat exchange effect is further improved. The coil includes a first vertical coil, a horizontal coil and a second vertical coil arranged and connected in sequence in the left and right direction. The straight tubes of the first vertical coil and the second vertical coil extend in the vertical direction, and the straight tubes of the horizontal coil extend in the left and right direction. The outer wall of the straight tube of the horizontal coil is provided with fins.

[0014] After adopting the above technical solution, an air outlet channel is formed between adjacent corrugated water collection plates. The upper end of the corrugated water collection plate is set at an angle to the vertical direction, so that the outlet of the air outlet channel is set at an angle to the vertical direction and will not face the fan directly. Each water collection unit is arranged in a rotating manner, so that the outlet of the air outlet channel of each water collection unit is also arranged in a rotating manner, and the rotation direction is opposite to the direction of the fan. Since the air inside the tower will spiral upward during the rotation of the fan at the top of the tower, arranging the rotation direction of the outlet of each water collection unit opposite to the rotation direction of the fan is the arrangement form with the best water collection effect, which can greatly improve the water collection effect and achieve high efficiency and water saving. The lower end of the corrugated water collection plate is set vertically, so that the inlet of the air outlet channel is vertical, which facilitates the uniform entry of the airflow carrying droplets rising inside the tower into the air outlet channel, and reduces wind resistance to a certain extent. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the water-saving and high-efficiency closed cooling tower in Embodiment 1 of the present invention;

[0016] Figure 2 This is a schematic diagram of the water collector in Embodiment 1 of the present invention;

[0017] Figure 3 This is a schematic diagram of the water collection unit in Embodiment 1 of the present invention;

[0018] Figure 4 for Figure 3 The main view;

[0019] Figure 5 for Figure 4AA section view;

[0020] Figure 6 This is a schematic diagram of the coil structure in Embodiment 1 of the present invention;

[0021] Figure 7 This is a schematic diagram of the water collector in Embodiment 2 of the present invention. Detailed Implementation

[0022] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Example 1

[0024] like Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a water-saving and high-efficiency closed-loop cooling tower includes a cooling tower body. The cooling tower body includes a water collector 1 and a fan 2 located above the water collector 1. The water collector 1 includes a plurality of closely arranged water collection units 11. Each water collection unit 11 includes a plurality of corrugated water collection plates 111 arranged side by side at intervals. The lower end of each corrugated water collection plate 111 is vertically arranged, and the upper end is arranged at an angle to the vertical direction. Each water collection unit 11 is arranged in a rotating manner, and the direction of rotation is opposite to the direction of rotation of the fan 2.

[0025] Specifically, an air outlet channel is formed between adjacent corrugated water collection plates 111. The upper end of the corrugated water collection plate 111 is set at an angle to the vertical direction, so that the outlet of the air outlet channel is set at an angle to the vertical direction and will not be directly opposite the fan 2. Each water collection unit 11 is arranged in a rotating manner, so that the outlet of the air outlet channel of each water collection unit 11 is also arranged in a rotating manner, and the rotation direction is opposite to the direction of the fan 2. Since the fan 2 at the top of the tower will cause the air inside the tower body 8 to spiral upward during the rotation process, the arrangement of the rotation direction of the outlet of each water collection unit 11 is opposite to the rotation direction of the fan 2, which is the arrangement with the best water collection effect, which can greatly improve the water collection effect and achieve high efficiency and water saving. The lower end of the corrugated water collection plate 111 is set vertically, so that the inlet of the air outlet channel is vertical, which facilitates the uniform entry of the airflow carrying liquid droplets rising inside the tower into the air outlet channel, and reduces wind resistance to a certain extent.

[0026] Generally, the upper end of the corrugated water-collecting plate 111 is tilted from top to bottom in a direction away from the central axis of the air duct 3. The corrugated water-collecting plate 111 can be S-shaped or Z-shaped. In this embodiment, the corrugated water-collecting plate 111 is Z-shaped.

[0027] In this embodiment, the water collector 1 has four water collection units, which are arranged in a 2x2 matrix, as follows: Figure 2As shown, the upper end of the corrugated water-collecting plate 111 of the water-collecting unit 11 on the left rear side is tilted to the left, the upper end of the corrugated water-collecting plate 111 of the water-collecting unit 11 on the left front side is tilted forward, the upper end of the corrugated water-collecting plate 111 of the water-collecting unit 11 on the right front side is tilted to the right, and the upper end of the corrugated water-collecting plate 111 of the water-collecting unit 11 on the right rear side is tilted backward.

[0028] like Figure 1 , 2 As shown in Figures 3, 4, and 5, the water collection unit 11 further includes a support frame. The support frame includes two opposing structural support plates 112 and two opposing water collection plate support plates 113. The two structural support plates 112 and the two water collection plate support plates 113 together form a square structure. Multiple water collection plate grooves are arranged side by side at intervals on the water collection plate support plate 113. The corrugated water collection plate 111 is inserted into the water collection plate groove.

[0029] Traditional water collectors often suffer from installation difficulties. In this embodiment, the water collection unit 11 also includes a support frame, which facilitates the splicing between adjacent water collection units 11 and makes it easier to install the entire water collector 1 inside the tower body 8. Each water collection unit 11 is modular, making installation and transportation convenient. If a water collection unit 11 is damaged or aged, the abnormal water collection unit 11 can be replaced individually, reducing replacement costs. Each water collection unit 11 has a support frame with high support strength, which also solves the problem of traditional water collectors having low support strength, making installation difficult and causing the water collection plate to tilt and increase resistance after long-term use.

[0030] like Figure 1 , 2 As shown in Figures 3 and 5, the corrugated water-collecting plate 111 is provided with a baffle plate 1111. The bent portion of the corrugated water-collecting plate 111 and the baffle plate 1111 are used to intercept droplets in the air. In this embodiment, the baffle plate 1111 is located on the windward side of the corrugated water-collecting plate 111, and can be straight or L-shaped, with the L-shaped opening facing downward.

[0031] like Figure 1 As shown, the cooling tower body also includes a tower body 8, a wind duct 3, a spray pipe 4, a water tank 5, a coil 6, and a water pump 7; wherein,

[0032] The air duct 3 is installed at the upper opening of the tower body 8, and the fan 2 is installed inside the air duct 3;

[0033] The water collector 1, the spray pipe 4, and the coil 6 are installed sequentially from top to bottom inside the tower body 8;

[0034] The side wall of the tower body 8 is provided with an air inlet 81, which is located below the coil 6;

[0035] The water tank 5 is located at the bottom of the tower body 8, and the inlet of the water pump 7 is connected to the water tank 5, while the outlet is connected to the spray pipe 4.

[0036] like Figure 1 , 6 As shown, the air resistance at the left and right ends of the coil 6 is less than that at the middle part.

[0037] Because fan 2 is located at the center of the tower top, the airflow velocity in the center of the tower body 8 is much higher than that near the tower wall. This results in a lower heat exchange effect at the edges compared to the center, leading to uneven temperature distribution over time and causing the coil 6 to deform, thus affecting its service life. In this embodiment, the air resistance at both ends of the coil 6 is lower than that in the middle, which helps to balance the airflow velocity between the edges and the middle, thus solving the problem of uneven temperature distribution in the coil 6 to some extent.

[0038] like Figure 1 , 6 As shown, the coil 6 includes a first vertical coil 61, a horizontal coil 62, and a second vertical coil 63 arranged and connected in sequence in the left-right direction. The straight tube portions of the first vertical coil 61 and the second vertical coil 63 extend in the vertical direction, and the straight tube portion of the horizontal coil 62 extends in the left-right direction. The outer wall of the straight tube portion of the horizontal coil 62 is provided with fins.

[0039] In this embodiment, the coil 6 employs a structure combining a first vertical coil 61, a horizontal coil 62, and a second vertical coil 63. The horizontal coil 62 is positioned at the center of the tower, where wind speed is high, while the first vertical coil 61 and the second vertical coil 63 are located near the tower wall where wind speed is low. This reduces wind resistance around the tower wall. Traditional coils typically only have a horizontal coil section. When using spray water for cooling, water on the horizontal finned tubes is diverted to the tower walls on both sides, affecting the cooling effect. In this embodiment, with the addition of the first vertical coil 61 and the second vertical coil 63, the water diverted by the horizontal coil 62 reaches the first vertical coil 61 or the second vertical coil 63, where it is intercepted and diverted downwards, preventing wasted cooling. Compared to traditional coils, the coil 6 in this embodiment offers better cooling performance and a longer service life.

[0040] Example 2

[0041] like Figure 1 , 2 As shown in Figures 3, 4, 5, 6, and 7, the main difference between this embodiment and Embodiment 1 is that the water collector 1 includes 9 water collection units 11, which are arranged in a 3x3 matrix. The outer 8 water collection units 11 are arranged in groups of two in a rotating configuration.

[0042] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A water-saving and high-efficiency closed-loop cooling tower, characterized in that, The cooling tower includes a cooling tower body, which includes a water collector (1) and a fan (2) located above the water collector (1). The water collector (1) includes several closely arranged water collection units (11). Each water collection unit (11) includes multiple corrugated water collection plates (111) arranged side by side at intervals. The lower end of each corrugated water collection plate (111) is vertically arranged, and the upper end is arranged at an angle to the vertical direction. Each water collection unit (11) is arranged in a rotating manner, and the direction of rotation is opposite to the direction of rotation of the fan (2). The water collector (1) has 4 water collection units, which are arranged in a 2x2 matrix. The upper end of the corrugated water collection plate (111) of the water collection unit (11) on the left rear side is inclined to the left, the upper end of the corrugated water collection plate (111) of the water collection unit (11) on the left front side is inclined to the front, the upper end of the corrugated water collection plate (111) of the water collection unit (11) on the right front side is inclined to the right, and the upper end of the corrugated water collection plate (111) of the water collection unit (11) on the right rear side is inclined to the rear. The water collection unit (11) also includes a support frame, which includes two opposing structural support plates (112) and two opposing water collection plate support plates (113). The two structural support plates (112) and the two water collection plate support plates (113) together form a square structure. Multiple water collection plate grooves are arranged side by side at intervals on the water collection plate support plate (113), and the corrugated water collection plate (111) is inserted into the water collection plate groove. The cooling tower body includes a coil (6), and the wind resistance at the left and right ends of the coil (6) is less than the wind resistance at the middle part. The coil (6) includes a first vertical coil (61), a horizontal coil (62), and a second vertical coil (63) arranged and connected in sequence in the left-right direction. The straight sections of the first vertical coil (61) and the second vertical coil (63) extend in the vertical direction, and the straight section of the horizontal coil (62) extends in the left-right direction. The outer wall of the straight section of the horizontal coil (62) is provided with fins.

2. The water-saving and high-efficiency closed-loop cooling tower according to claim 1, characterized in that, The corrugated water-collecting plate (111) is provided with a water-baffle plate (1111).

3. The water-saving and high-efficiency closed-loop cooling tower according to claim 1, characterized in that, The cooling tower body also includes a tower body (8), a wind duct (3), a spray pipe (4), a water tank (5), and a water pump (7); among which, The air duct (3) is installed at the upper opening of the tower body (8), and the fan (2) is installed inside the air duct (3); The water collector (1), the spray pipe (4) and the coil (6) are installed in the tower body (8) from top to bottom; The side wall of the tower body (8) is provided with an air inlet (81), which is located below the coil (6); The water tank (5) is located at the bottom of the tower body (8), and the inlet of the water pump (7) is connected to the water tank (5), and the outlet is connected to the spray pipe (4).

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