Countercurrent fog dispersal and noise reduction closed cooling tower

Abstract

The utility model discloses a countercurrent fog dispersal and noise reduction closed cooling tower which comprises a cooling tower main body, and a finned tube bundle, a fan, a water collector, a spraying device, a heat exchange tube bundle and a water collecting tank are sequentially arranged in the cooling tower main body from top to bottom; the upper end of the finned tube bundle is connected with a horizontally-arranged medium inlet connector, the lower end of the finned tube bundle is connected with the upper end of the heat exchange tube bundle through a connecting tube, and the lower end of the heat exchange tube bundle is connected with a horizontally-arranged medium outlet connector. An air inlet window is arranged between the shell plate and the water collecting tank, and the air inlet window is embedded in the side part of the cooling tower main body; and a maintenance window is arranged on one side of the top of the cooling tower main body, and is positioned outside the fan. The countercurrent fog dispersal and noise reduction closed cooling tower provided by the utility model can realize fog dispersal and noise reduction, solves the problem of serious rime fog when the cooling tower operates in winter, can also reduce noise, and is suitable for being applied to cities.

Description

Technical Field

[0001] The utility model relates to a counter-current mist elimination and noise reduction closed cooling tower, belonging to the technical field of cooling towers. Background Art

[0002] With the implementation of the national energy conservation and emission reduction policy and the increasing scarcity of water resources, closed cooling towers have been widely used in iron and steel metallurgy, power electronics, mechanical processing, air conditioning systems and other industries in recent years. Countercurrent closed cooling towers (also called evaporative air coolers or closed cooling towers) place tubular heat exchangers in the tower to ensure the cooling effect through heat exchange between circulating air, spray water and circulating water. Because it is a closed cycle, it can ensure that the water quality is not polluted, which well protects the efficient operation of the main equipment and increases its service life. When the outside temperature is low, the spray water system can be stopped to save water.

[0003] The counter-flow closed cooling tower in the prior art is mostly used in the north or in areas with low temperatures. Because there is no filler in the tower, there is no need to consider the problem of filler icing during winter operation. However, the counter-flow closed cooling tower in the prior art still has the following technical problems during use:

[0004] When used in winter, due to the large temperature difference, the hot and humid air is drawn out by the fan and then cooled to below the dew point temperature. The water vapor contained in the air condenses to form white mist, which interferes with visibility and is not suitable for use in cities. Fans are often installed at the top of the equipment, which makes a lot of noise and is even more unsuitable for use in cities.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] The utility model aims at the deficiencies in the background technology and provides a countercurrent demisting and noise reducing closed cooling tower, which can achieve demisting and noise reduction, solve the serious white fog problem that occurs when the cooling tower is running in winter, and can also reduce noise, and is suitable for use in cities.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A counter-current demisting and noise reducing closed cooling tower comprises a cooling tower body, wherein a fin tube bundle, a fan, a water collector, a spray device, a heat exchange tube bundle and a water collecting tank are sequentially installed inside the cooling tower body from top to bottom;

[0009] The upper end of the finned tube bundle is connected to a horizontally arranged medium inlet joint, the lower end of the finned tube bundle is connected to the upper end of the heat exchange tube bundle through a connecting pipe, and the lower end of the heat exchange tube bundle is connected to a horizontally arranged medium outlet joint;

[0010] An air inlet window is arranged between the outer shell plate and the water collecting tank, and the air inlet window is embedded in the side of the cooling tower body; an inspection window is arranged on one side of the top of the cooling tower body, and the inspection window is located outside the fan.

[0011] Furthermore, the cooling tower body is a vertical box structure.

[0012] Furthermore, the connecting pipe is installed on the outer wall of the cooling tower body in a vertical direction, and the connecting pipe guides the medium in the fin tube bundle into the heat exchange tube bundle.

[0013] Furthermore, the water collector, the spray device and the outside of the heat exchange tube bundle are covered with an outer shell plate.

[0014] Furthermore, the water collecting tank is connected to the spraying device through a water supply pipeline, a spraying pump is installed on the water supply pipeline, and the spraying pump is located at one side of the bottom of the cooling tower body.

[0015] Furthermore, an air outlet is provided at the top of the cooling tower body.

[0016] Furthermore, the medium inlet joint and the medium outlet joint are located on the same side of the cooling tower body.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] After the humid hot air is extracted by the fan and mixed with the hot air in the fin tube bundle area, the relative humidity is reduced to form unsaturated gas, which can block or reduce the generation of white fog;

[0019] The finned tube bundle is arranged on the upper part of the fan, which has a significant defogging effect and is convenient for maintenance. If there is a leak, it is also easy to replace. In addition, the finned tube bundle can pre-cool the hot water, reduce the temperature difference, reduce the evaporation of the lower part, save water resources, and the cooling effect is particularly obvious in winter.

[0020] The fan is installed inside the equipment to reduce noise. By reserving an inspection window outside the fan, the fan can be inspected and maintained without removing the fin tube bundle.

[0021] It can eliminate fog and reduce noise, and can be used in public places such as shopping malls, airports, hospitals, etc. in the city.

[0022] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a half-section view of the utility model.

[0025] In the figure, 1-fin tube bundle, 2-fan, 3-inspection window, 4-outer shell plate, 5-air inlet window, 6-water collecting tank, 7-connecting pipe, 8-water collector, 9-spraying device, 10-heat exchange tube bundle, 11-spray pump, 12-cooling tower body, 13-air outlet, 14-medium inlet joint, 15-medium outlet joint. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown together, the utility model provides a countercurrent demisting and noise reducing closed cooling tower, including a cooling tower body 12, the cooling tower body 12 is a vertical box structure, and the cooling tower body 12 is equipped with a fin tube bundle 1, a fan 2, a water collector 8, a spray device 9, a heat exchange tube bundle 10 and a water collecting tank 6 in sequence from top to bottom.

[0028] The upper end of the finned tube bundle 1 is connected to a horizontally arranged medium inlet joint 14 , the lower end of the finned tube bundle 1 is connected to the upper end of the heat exchange tube bundle 10 through a connecting pipe 7 , and the lower end of the heat exchange tube bundle 10 is connected to a horizontally arranged medium outlet joint 15 .

[0029] The connecting pipe 7 is installed on the outer wall of the cooling tower body 12 along the vertical direction, and the connecting pipe 7 is used to introduce the medium in the fin tube bundle 1 into the heat exchange tube bundle 10 .

[0030] The medium inlet joint 14 and the medium outlet joint 15 are located on the same side of the cooling tower body 12 .

[0031] The exterior of the water collector 8 , the spray device 9 and the heat exchange tube bundle 10 is covered with an outer shell plate 4 .

[0032] An air inlet window 5 is provided between the shell plate 4 and the water collecting tank 6 , and the air inlet window 5 is embedded in the side of the cooling tower body 12 .

[0033] The water collecting tank 6 is connected to the spraying device 9 through a water supply pipeline, and a spraying pump 11 is installed on the water supply pipeline. The spraying pump 11 is located at one side of the bottom of the cooling tower body 12. The spraying pump 11 pumps the cooling water in the water collecting tank 6 to the spraying device 9 to spray the heat exchange tube bundle 10.

[0034] An air outlet 13 is disposed at the top of the cooling tower body 12 .

[0035] A maintenance window 3 is provided on one side of the top of the cooling tower body 12 . The maintenance window 3 is located outside the fan 2 , so that the fan 2 can be inspected and maintained without disassembling the fin tube bundle 1 .

[0036] The specific working principle of this utility model:

[0037] When the equipment is in operation, the heat medium flows through the fin tube bundle 1 from the medium inlet joint 14, enters the heat exchange tube bundle 10 through the connecting pipe 7, and flows out from the medium outlet joint 15 after passing through the heat exchange tube bundle 10; the spray water in the water collecting tank 6 is sent to the spray device 9 through the spray pump 11, and the spray water is sprinkled on the heat exchange tube bundle 10, and the heat of the medium in the tube is carried away by the vaporized latent heat and falls into the water collecting tank 6; humid hot air is formed in the outer shell plate 4; the fan 2 is running, and the air enters from the air inlet window 5. The humid hot air and the spray water flow upward under the negative pressure of the fan 2. After being blocked by the water collector 8, the humid hot air is extracted by the fan 2, and after being mixed and diluted with the hot air in the fin tube bundle 1 area, the relative humidity is reduced to form unsaturated gas, which can block or reduce the generation of white fog, and the fin tube bundle 1 can cool the heat medium, reduce the temperature difference, reduce the evaporation of the lower part, save water resources, and the cooling effect is particularly obvious in winter.

[0038] The fin tube bundle in the utility model is arranged on the upper part of the fan, which has a remarkable demisting effect and is convenient for maintenance and replacement if there is leakage.

[0039] The fan in the utility model is arranged inside the equipment, which can reduce noise. By reserving an inspection window outside the fan, the fan can be inspected and maintained without disassembling the fin tube bundle.

[0040] The above is an example of the best implementation of the utility model, and the parts not described in detail are common knowledge of ordinary technicians in this field. The protection scope of the utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A countercurrent demisting and noise reducing closed cooling tower, characterized in that: The cooling tower comprises a cooling tower body (12), wherein a fin tube bundle (1), a fan (2), a water collector (8), a spray device (9), a heat exchange tube bundle (10) and a water collecting tank (6) are installed in sequence from top to bottom inside the cooling tower body (12); The upper end of the finned tube bundle (1) is connected to a horizontally arranged medium inlet joint (14), the lower end of the finned tube bundle (1) is connected to the upper end of the heat exchange tube bundle (10) via a connecting pipe (7), and the lower end of the heat exchange tube bundle (10) is connected to a horizontally arranged medium outlet joint (15); The exterior of the water collector (8), the spray device (9) and the heat exchange tube bundle (10) is covered with an outer shell plate (4); An air inlet window (5) is provided between the outer shell plate (4) and the water collecting tank (6), and the air inlet window (5) is embedded in the side of the cooling tower body (12); an inspection window (3) is provided on one side of the top of the cooling tower body (12), and the inspection window (3) is located outside the fan (2).

2. A countercurrent demisting and noise reducing closed cooling tower as claimed in claim 1, characterized in that: The cooling tower body (12) is a vertical box structure.

3. A counter-current demisting and noise reducing closed cooling tower as claimed in claim 1, characterized in that: The connecting pipe (7) is installed on the outer wall of the cooling tower body (12) in a vertical direction, and the connecting pipe (7) guides the medium in the fin tube bundle (1) into the heat exchange tube bundle (10).

4. A counter-current demisting and noise reducing closed cooling tower as claimed in claim 1, characterized in that: The water collecting tank (6) is connected to the spraying device (9) via a water supply pipeline, and a spraying pump (11) is installed on the water supply pipeline. The spraying pump (11) is located at one side of the bottom of the cooling tower body (12).

5. A counter-current demisting and noise reducing closed cooling tower as claimed in claim 1, characterized in that: An air outlet (13) is provided at the top of the cooling tower body (12).

6. A counter-current demisting and noise reducing closed cooling tower as claimed in claim 1, characterized in that: The medium inlet joint (14) and the medium outlet joint (15) are located on the same side of the cooling tower body (12).

Images