Spray cooling device

Abstract

Relates to the field of air coolers, and discloses a spray cooling device which comprises an air cooler and an air inlet formed in the upper end of the air cooler, and further comprises an air cooling unit arranged in the air inlet and used for conducting air cooling heat dissipation on the air cooler; the atomization unit is arranged in the air inlet and is used for spraying and cooling the air cooler; the cleaning part is arranged on the air cooling unit and used for cleaning the atomization unit, and the cleaning part comprises a cleaning plate fixed to the upper end of the rotating disc and a cleaning brush arranged at the upper end of the cleaning plate; according to the air cooler, the heat exchange capacity of the air cooler is improved, so that the output of a unit is improved, the air cooling unit can drive the cleaning part to rotate below the atomization unit in the moving process to clean the atomization unit, and the situation that impurities in water block small spraying holes and affect the atomization effect of cooling water is reduced; and the cooling effect of the spray cooling system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air coolers, in particular to a spray cooling device. Background Art

[0002] The main purpose of using direct air cooling technology in thermal power plants is to save water. It is suitable for places with dry or arid climates, coal mine pits and other areas with very limited water resources and extremely high water costs. It is also suitable for places in cities where space is limited and wet cooling towers cannot be built. The operation results of existing units show that direct air cooling units save 85% or more water than water condenser generator sets. When the ambient temperature is relatively high in summer, the vacuum of the air-cooled unit will decrease, the power generation efficiency of the unit will decrease, and even the entire unit will be forced to operate at a reduced load. To address this problem, it is necessary to install a spray cooling system on the air-cooled unit and spray the intercooler in summer.

[0003] The existing equipment has the following disadvantages: after the existing spray cooling system has been running for a period of time, impurities in the water are very likely to clog the spray holes, reducing the cooling effect of the spray cooling system.

[0004] Therefore, the present application now proposes a spray cooling device to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a spray cooling device to solve the problem that after a period of operation, impurities in the water are very likely to block the spray holes, thereby reducing the cooling effect of the spray cooling system.

[0006] To achieve the above object, the utility model provides the following technical solution: a spray cooling device, comprising an air cooler and an air inlet arranged at the upper end of the air cooler, and further comprising:

[0007] An air cooling unit, arranged in the air inlet, for air cooling and heat dissipation of the air cooler;

[0008] An atomizing unit, arranged in the air inlet, for spraying and cooling the air cooler;

[0009] A cleaning member is arranged on the air cooling unit and is used for cleaning the atomizing unit.

[0010] Wherein, the air cooling unit comprises a support fixed on the inner wall of the air inlet, a protection box arranged in the middle of the support, a motor fixed inside the protection box, a rotating shaft fixed at the power output end of the motor and a rotating disk fixed at the upper end of the rotating shaft, and the rotating shaft passes through the protection box and is rotatably connected to the protection box through a bearing;

[0011] Blades are arranged at equal angles on the circular end surface of the rotating disk.

[0012] Wherein, the atomization unit comprises a water distribution pipe fixed on the inner wall of the air inlet, a water inlet pipe arranged at the upper end of the water distribution pipe and a nozzle arranged at the lower end of the water distribution pipe, and the cleaning member is located below the nozzle.

[0013] Wherein, a water distribution tray is arranged in the middle of the water distribution pipe, a drainage port is provided at the connection between the water distribution tray and the water distribution pipe, and a filter is arranged inside the water distribution tray.

[0014] There are multiple water distribution pipes, which are distributed at equal angles between the water distribution tray and the air inlet.

[0015] Wherein, the cleaning member comprises a cleaning plate fixed to the upper end of the rotating disk and a cleaning brush arranged on the upper end of the cleaning plate;

[0016] The cleaning brush is made of a bristle brush.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The heat generated during the operation of the thermal power plant of the utility model is connected to the air cooler and enters the inside of the fin tube, and then the fin tube is air-cooled and dissipated through the air cooling unit. When the ambient temperature is relatively high in summer, the atomization unit is connected to the inside of the air inlet, and water is atomized to form droplets of a certain particle size. The droplets are fully mixed with the air and evaporate quickly during the movement. Since the latent heat of vaporization of water is large, a large amount of heat in the air is absorbed when the water evaporates, thereby reducing the temperature of the air. Then, the cooled humid air is sent to the fin tube to enhance the heat exchange effect of the air cooler, and a small amount of remaining droplets that have not been vaporized are The air flows through the high-temperature fin tubes under the action of the air cooling unit. Under the action of high temperature, the droplets accelerate vaporization and absorb the heat of the fin tubes and the air between the fins. Under a certain atomization intensity and spray angle, the spray will also form a water film on the surface of the air cooler. The evaporation of the water film further takes away the heat, thereby improving the heat exchange capacity of the air cooler and thus improving the output of the unit. In the process of movement, the air cooling unit will drive the cleaning part to rotate under the atomization unit to clean the atomization unit, reduce the impurities in the water from clogging the spray holes, affect the atomization effect of the cooling water, and improve the cooling effect of the spray cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure in one embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of a top view of a structure in one embodiment of the utility model;

[0021] Figure 3 This is a schematic structural diagram of an embodiment of the utility model in a front view;

[0022] Figure 4 This is a schematic diagram of the structure inside the air inlet in one embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure inside the protective box in one embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the filter installation in one embodiment of the utility model.

[0025] In the figure: 1. air cooler; 11. fin tube; 2. air inlet; 3. air cooling unit; 31. support; 32. protective box; 33. motor; 34. rotating shaft; 35. rotating disk; 36. blades; 4. atomization unit; 41. water inlet pipe; 42. water distribution plate; 43. water distribution pipe; 44. nozzle; 45. cleaning part; 451. cleaning plate; 452. cleaning brush; 46. filter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 The utility model provides a technical solution: a spray cooling device, comprising an air cooler 1 and an air inlet 2 arranged at the upper end of the air cooler 1, and also comprising:

[0028] The air cooling unit 3 is arranged in the air inlet 2 and is used for air cooling and heat dissipation of the air cooler 1;

[0029] The atomizing unit 4 is arranged in the air inlet 2 and is used for spraying and cooling the air cooler 1;

[0030] The cleaning member 45 is disposed on the air cooling unit 3 and is used for cleaning the atomizing unit 4 . The air cooler 1 is provided with a fin tube 11 at a position below the air cooling unit 3 .

[0031] It should be noted that, during operation, the heat generated during the operation of the thermal power plant is connected to the air cooler 1, enters the interior of the fin tube 11, and then the fin tube 11 is cooled and dissipated by the air cooling unit 3. When the ambient temperature is relatively high in summer, the atomization unit 4 is connected to the interior of the air inlet 2, and water is atomized to form droplets of a certain particle size. The droplets are fully mixed with the air during the movement and evaporate rapidly. Since the latent heat of vaporization of water is large, a large amount of heat in the air will be absorbed when the water evaporates, thereby reducing the temperature of the air. Then, the cooled humid air is sent to the fin tube 11 to enhance the heat exchange effect of the air cooler 1, and a small amount of residual unvaporized air is removed. The mist droplets flow through the high-temperature fin tube 11 under the action of the air cooling unit 3. Under the action of high temperature, the mist droplets accelerate vaporization and absorb the heat of the fin tube 11 and the air between the fins. Under a certain atomization intensity and spray angle, the spray will also form a water film on the surface of the air cooler. The evaporation of the water film further takes away the heat, thereby improving the heat exchange capacity of the air cooler and thus improving the output of the unit. In the process of movement, the air cooling unit 3 will drive the cleaning part 45 to rotate under the atomization unit 4 to clean the atomization unit 4, reduce the impurities in the water from clogging the spray holes, affect the atomization effect of the cooling water, and improve the cooling effect of the spray cooling system.

[0032] In one embodiment, the air cooling unit 3 includes a support 31 fixed on the inner wall of the air inlet 2, a protection box 32 arranged in the middle of the support 31, a motor 33 fixed inside the protection box 32, a rotating shaft 34 fixed at the power output end of the motor 33, and a rotating disk 35 fixed at the upper end of the rotating shaft 34, and the rotating shaft 34 passes through the protection box 32 and is rotatably connected to the protection box 32 through a bearing;

[0033] Blades 36 are arranged at equal angles on the circular end surface of the rotating disk 35 .

[0034] With this design, the motor 33 rotates, driving the rotating shaft 34 to drive the rotating disk 35 to rotate, thereby causing the blades 36 to rotate along the rotating shaft 34 to blow air toward the fin tubes 11 to cool the fin tubes 11 with air.

[0035] In one embodiment, the atomizing unit 4 includes a water distribution pipe 43 fixed on the inner wall of the air inlet 2 , a water inlet pipe 41 arranged at the upper end of the water distribution pipe 43 , and a nozzle 44 arranged at the lower end of the water distribution pipe 43 , and the cleaning member 45 is located below the nozzle 44 .

[0036] In this design, the nozzle 44 sprays water mist into the interior of the air inlet 2, and then the water mist is sent to the fin tube 11 under the drive of the blades 36. After a proper amount of water mist is sprayed into the air inlet 2, the mist droplets diffuse throughout the air cooling unit and are fully contacted and mixed with the air. There is a temperature difference and a water vapor partial pressure difference between the air and the saturated air layer on the surface of the water droplets, so the water droplets evaporate. By utilizing the large latent heat of evaporation of water, the water mist droplets absorb a large amount of heat in the air when evaporating, thereby lowering the air temperature. At the same time, the moisture content of the air increases, the relative humidity increases, and the enthalpy value of the humid air remains unchanged, thereby achieving the purpose of lowering the air temperature.

[0037] In one embodiment, a water distribution tray 42 is disposed in the middle of the water distribution pipe 43 , a drain port is provided at the connection between the water distribution tray 42 and the water distribution pipe 43 , and a filter screen 46 is disposed inside the water distribution tray 42 .

[0038] With this design, the filter 46 can intercept larger impurities in the water. After the device has been used for a period of time, the water separation tray 42 needs to be disassembled to clean the impurities on the filter 46.

[0039] In one embodiment, a plurality of water distribution pipes 43 are provided and are distributed at equal angles between the water distribution plate 42 and the air inlet 2 .

[0040] With such a design, the provision of a plurality of water distribution pipes 43 can increase the coverage rate of the water mist sprayed by the nozzle 44 , thereby improving the spray cooling efficiency of the air cooler 1 .

[0041] In one embodiment, the cleaning member 45 includes a cleaning plate 451 fixed to the upper end of the rotating disk 35 and a cleaning brush 452 disposed on the upper end of the cleaning plate 451;

[0042] The cleaning brush 452 is made of a bristle brush.

[0043] With this design, the cleaning brush 452 penetrates into the interior of the nozzle 44. When the rotating disk 35 rotates driven by the motor 33, the cleaning plate 451 drives the cleaning brush 452 to scrub the nozzle 44, which can reduce the clogging of impurities in the spray holes of the nozzle 44 and affect the atomization spraying efficiency of the cooling water.

Claims

1. A spray cooling device, comprising an air cooler (1) and an air inlet (2) arranged at the upper end of the air cooler (1), characterized in that: Also includes: An air cooling unit (3) is arranged in the air inlet (2) and is used to perform air cooling and heat dissipation on the air cooler (1); an atomizing unit (4), arranged in the air inlet (2), and used for spraying and cooling the air cooler (1); A cleaning member (45) is arranged on the air cooling unit (3) and is used for cleaning the atomization unit (4).

2. A spray cooling device according to claim 1, characterized in that: The air cooling unit (3) comprises a support (31) fixed on the inner wall of the air inlet (2), a protection box (32) arranged in the middle of the support (31), a motor (33) fixed inside the protection box (32), a rotating shaft (34) fixed at the power output end of the motor (33), and a rotating disk (35) fixed at the upper end of the rotating shaft (34); the rotating shaft (34) passes through the protection box (32) and is rotatably connected to the protection box (32) via a bearing; Blades (36) are arranged at equal angles on the circular end surface of the rotating disk (35).

3. A spray cooling device according to claim 1, characterized in that: The atomizing unit (4) comprises a water distribution pipe (43) fixed on the inner wall of the air inlet (2), a water inlet pipe (41) arranged at the upper end of the water distribution pipe (43), and a nozzle (44) arranged at the lower end of the water distribution pipe (43); the cleaning member (45) is located below the nozzle (44).

4. A spray cooling device according to claim 3, characterized in that: A water distribution tray (42) is arranged in the middle of the water distribution pipe (43), a drainage outlet is provided at the connection between the water distribution tray (42) and the water distribution pipe (43), and a filter screen (46) is arranged inside the water distribution tray (42).

5. A spray cooling device according to claim 4, characterized in that: The water distribution pipes (43) are provided in plurality and are distributed at equal angles between the water distribution plate (42) and the air inlet (2).

6. A spray cooling device according to claim 2, characterized in that: The cleaning member (45) comprises a cleaning plate (451) fixed to the upper end of the rotating disk (35) and a cleaning brush (452) arranged on the upper end of the cleaning plate (451); The cleaning brush (452) is made of a bristle brush.

Images