Dry-wet combined closed cooling tower with energy regulation function

Abstract

The utility model discloses a dry-wet combined closed cooling tower with an energy adjusting function. The dry-wet combined closed cooling tower sequentially comprises a spraying water tank, a light pipe group adjustable shutter, a light pipe group, a spraying pipe, a water collector, a finned pipe group and a fan from bottom to top, the finned tube set is located on the upper portion of the closed cooling tower, the finned tube set is of a two-side vertical structure, and finned tube set adjustable shutters are arranged on the outer side of the finned tube set in the length direction. The finned tube group and the light tube group are connected through a connecting pipeline; the water collector, the spraying pipe and the light pipe set are all wrapped in the shell, and an environment temperature heat transmitter and a control system are arranged on the outer surface of the shell. And the light pipe group adjustable shutters are arranged at the periphery below the light pipe group. According to the dry-wet combined closed cooling tower, energy can be adjusted according to different seasons, electricity and water are saved to the maximum extent, and the operation cost is reduced; and wind resistance can be reduced, the arrangement heat exchange area is increased, and the occupied area is reduced.

Description

Technical Field

[0001] The utility model relates to a dry-wet combined closed cooling tower with energy regulation, belonging to the technical field of cooling towers. Background Art

[0002] Closed cooling tower (also called evaporative air cooler, closed cooling tower) places a tubular heat exchanger inside the tower, and ensures the cooling effect through the heat exchange of 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 the service life. When the outside temperature is low, the spray water system can be stopped to achieve a water-saving effect. With the implementation of the national energy-saving and emission reduction policy and the increasing scarcity of water resources, closed cooling towers have been widely used in metallurgy, aviation, electricity, chemical industry, machinery, petroleum, food, plastics, rubber and other industries in recent years.

[0003] The existing dry-wet combined closed cooling tower lays the finned heat exchange tubes flat on the upper part of the water collector in the tower. This layout in the tower not only has the problem of large footprint, but also increases the resistance of the fan, thereby increasing the power consumption of the motor. In addition, the existing dry-wet combined closed cooling tower is not convenient for energy adjustment according to different seasons, and there is room for improvement in terms of power saving, water saving and operating cost control.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] The utility model aims at the deficiencies in the background technology and provides a dry-wet combined closed cooling tower with energy regulation, which can adjust energy according to different seasons, save electricity and water to the maximum extent, and reduce operating costs; it can also reduce wind resistance, increase the arrangement heat exchange area, and reduce the floor space.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A dry-wet combined closed cooling tower with energy regulation, which comprises, from bottom to top, a spray water tank, an adjustable shutter of a light tube group, a light tube group, a spray pipe, a water collector, a fin tube group and a fan;

[0008] The fin tube group is located at the upper part of the closed cooling tower. The fin tube group adopts a two-side vertical structure. The fin tube group is provided with an adjustable louver on the outer side along the length direction. The fin tube group and the light tube group are connected by a connecting pipe.

[0009] The water collector, the spray pipe and the light pipe group are all wrapped in a shell, and an ambient temperature heat transfer device and a control system are arranged on the outer surface of the shell;

[0010] The adjustable shutters of the light tube group are installed around the lower part of the light tube group.

[0011] Furthermore, the control system is electrically connected to the adjustable shutters of the fin tube group and the adjustable shutters of the light tube group. The control system can control the adjustable shutters of the fin tube group and the adjustable shutters of the light tube group to open, close or adjust the opening degree according to the set temperature range.

[0012] Furthermore, a fan fairing is installed between the fin tube group and the fan.

[0013] Furthermore, the connecting pipes are located at the ends of the fin tube group and the bare tube group along the length direction.

[0014] Furthermore, a medium inlet is provided above the end of the fin tube group along the length direction, and a medium outlet is provided below the end of the light tube group along the length direction.

[0015] Furthermore, the spray pipe is horizontally arranged below the water collector and above the light pipe group.

[0016] Furthermore, a plurality of evenly distributed nozzles are installed at the bottom of the spray pipe, and the spray pipe is connected to the spray water tank through a pipeline, wherein a circulating water pump is installed on the pipeline.

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

[0018] The utility model arranges adjustable shutters of finned tube groups at the upper part of the cooling tower and adjustable shutters of light tube groups at the lower part of the cooling tower. The adjustable shutters of the finned tube groups and the adjustable shutters of the light tube groups can be opened, closed or adjusted in degree according to the set temperature.

[0019] The utility model has a plurality of operating modes under different working conditions, and performs energy adjustment according to different seasons, thereby saving electricity and water to the maximum extent and reducing operating costs; and adopts an external fin structure, which has small wind resistance, a larger arrangement heat exchange area, and a smaller footprint.

[0020] The utility model is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the structural front view of the utility model;

[0022] Figure 2 It is a structural side view of the utility model.

[0023] In the figure, 1-fan, 2-fan fairing, 3-fin tube group, 4-adjustable shutter of fin tube group, 5-connecting pipe, 6-water collector, 7-spray pipe, 8-light tube group, 9-shell, 10-adjustable shutter of light tube group, 11-spray water tank, 12-circulating water pump, 13-ambient temperature heat transfer device and control system, 14-medium inlet, 15-medium outlet. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1 and Figure 2 As shown together, the utility model provides a dry-wet combined closed cooling tower with energy regulation, which includes, from bottom to top, a spray water tank 11, an adjustable shutter 10 of a light tube group, a light tube group 8, a spray pipe 7, a water collector 6, a fin tube group 3 and a fan 1.

[0026] A fan fairing 2 is installed between the fin tube group 3 and the fan 1 .

[0027] The fin tube group 3 is located at the upper part of the closed cooling tower. The fin tube group 3 adopts a two-side vertical structure. The fin tube group 3 is provided with an adjustable louver 4 on the outer side along the length direction.

[0028] The finned tube group 3 and the light tube group 8 are connected by a connecting pipe 5, and the connecting pipe 5 is located at the ends of the finned tube group 3 and the light tube group 8 along the length direction. The medium to be cooled or condensed first flows through the finned tube group 3 and then enters the light tube group 8 through the connecting pipe 5 for evaporation and heat exchange.

[0029] A medium inlet 14 is provided above the end of the fin tube group 3 along the length direction, and a medium outlet 15 is provided below the end of the light tube group 8 along the length direction.

[0030] The spray pipe 7 is horizontally arranged below the water collector 6 and above the light pipe group 8; a plurality of evenly distributed nozzles are installed at the bottom of the spray pipe 7, and the spray pipe 7 is connected to the spray water tank 11 through a pipeline, wherein a circulating water pump 12 is installed on the pipeline.

[0031] The circulating water pump 12 delivers the spray water into the spray pipe 7, and the spray water is sprayed downwardly and evenly onto the surface of the light pipe group 8 by the nozzle, forming a uniform water film outside the light pipe.

[0032] The water collector 6 , the spray pipe 7 and the light pipe group 8 are all wrapped in a shell 9 , and an ambient temperature heat transfer device and a control system 13 are arranged on the outer surface of the shell 9 .

[0033] The control system is electrically connected to the fin tube group adjustable shutter 4 and the light tube group adjustable shutter 10. The control system can control the fin tube group adjustable shutter 4 and the light tube group adjustable shutter 10 to open, close or adjust the opening degree according to the set temperature range.

[0034] The light tube group adjustable shutters 10 are installed around the bottom of the light tube group 8.

[0035] The specific working principle of this utility model:

[0036] Summer operation mode (high temperature condition): the adjustable shutter 4 of the fin tube group is closed, and the adjustable shutter 10 of the light tube group is opened; the medium to be cooled or condensed first flows through the fin tube group 3 and then enters the light tube group 8 for evaporation and heat exchange. The circulating water pump 12 sends the spray water to the spray pipe 7, and the spray water is sprayed downward evenly on the surface of the light tube group 8 by the nozzle, forming a uniform water film on the outside of the light tube. The water film evaporates and vaporizes continuously, absorbs the heat of the medium in the tube, and cools or condenses the medium in the tube. The evaporation of the water film greatly increases the humidity of the air after passing through the light tube group 8 and approaches the saturation state. The fan 1 extracts the nearly saturated wet air and passes it through the water collector 6 to remove the water droplets entrained in the wet air. Except for a small amount of vaporized water, most of the spray water falls back into the spray water tank 11, and is pressurized by the circulating water pump 12 for recycling.

[0037] Winter operation mode: the adjustable shutters 4 of the fin-tube group are opened, the adjustable shutters 10 of the light tube group are closed, and the circulating water pump 12 is turned off; all the external cold air enters the equipment from the adjustable shutters 4 of the fin-tube group, and the cooled medium is cooled entirely by the external cold air; this operation mode is a pure air cooling mode. Since the adjustable shutters 10 of the light tube group are closed, the heat exchange efficiency of the fin-tube group 3 can be improved, and the air distribution volume of the fan 1 can be reduced, thereby achieving energy-saving effect.

[0038] Spring and autumn operation mode: the adjustable shutters 4 of the fin tube group and the adjustable shutters 10 of the light tube group are opened at the same time. The cooled or condensed medium first enters the fin tube group 3 for heat exchange, the temperature of the medium in the fin tube decreases, and the cold air outside the fin is heated; the medium continues to enter the light tube group 8 for heat exchange, and the circulating water pump 12 sends the spray water into the spray pipe 7, and the spray water is sprayed downward and evenly on the surface of the light tube group 8 by the nozzle, forming a uniform water film outside the light tube. The water film evaporates and vaporizes continuously, absorbs the heat of the medium in the tube, and cools or condenses the medium in the tube. The evaporation of the water film greatly increases the humidity of the air after passing through the light tube group 8 and approaches the saturation state. The fan 1 extracts the nearly saturated wet air and passes it through the water collector 6. After removing the water droplets entrained in the wet air, except for a small amount of vaporized water, most of the spray water falls back into the spray water tank 11, and is pressurized by the circulating water pump 12 for recycling. The nearly saturated moist air is mixed with the hot air heated by the finned tubes. After the two gases are mixed, the relative humidity of the mixed air decreases, and no white mist is formed when it is discharged into the atmosphere.

[0039] The utility model arranges adjustable shutters of finned tube groups at the upper part of the cooling tower and adjustable shutters of light tube groups at the lower part of the cooling tower. The adjustable shutters of the finned tube groups 4 and the adjustable shutters of the light tube groups 10 can be opened, closed or the opening degree can be adjusted according to the set temperature.

[0040] The utility model can set three different operating modes (summer, winter, spring and autumn), and can adjust energy according to different seasons, saving electricity and water to the maximum extent and reducing operating costs; and it adopts an external fin structure with small wind resistance, larger heat exchange area and smaller footprint.

[0041] 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 dry-wet combined closed cooling tower with energy regulation, characterized in that: The device comprises, from bottom to top, a spray water tank (11), an adjustable shutter of a light tube group (10), a light tube group (8), a spray pipe (7), a water collector (6), a fin tube group (3), and a fan (1); The fin tube group (3) is located at the upper part of the closed cooling tower. The fin tube group (3) adopts a two-side vertical structure. The fin tube group (3) is provided with an adjustable fin tube group shutter (4) on the outer side along the length direction. The fin tube group (3) and the light tube group (8) are connected via a connecting pipe (5). The water collector (6), the spray pipe (7) and the light pipe group (8) are all wrapped in a shell (9), and an ambient temperature heat transfer device and a control system are provided on the outer surface of the shell (9); The light tube group adjustable shutters (10) are installed around the bottom of the light tube group (8).

2. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 1, characterized in that: The control system is electrically connected to the fin tube group adjustable shutter (4) and the light tube group adjustable shutter (10), and the control system can control the fin tube group adjustable shutter (4) and the light tube group adjustable shutter (10) to open, close or adjust the opening degree according to a set temperature range.

3. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 1, characterized in that: A fan fairing (2) is installed between the fin tube group (3) and the fan (1).

4. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 1, characterized in that: The connecting pipe (5) is located at the ends of the fin tube group (3) and the smooth tube group (8) along the length direction.

5. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 4, characterized in that: A medium inlet (14) is provided above the end of the fin tube group (3) in the length direction, and a medium outlet (15) is provided below the end of the light tube group (8) in the length direction.

6. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 1, characterized in that: The spray pipe (7) is arranged below the water collector (6) in the horizontal direction and is located above the light pipe group (8).

7. A dry-wet combined closed cooling tower with energy regulation as claimed in claim 6, characterized in that: A plurality of uniformly distributed nozzles are installed at the bottom of the spray pipe (7), and the spray pipe (7) is connected to a spray water tank (11) via a pipeline, wherein a circulating water pump (12) is installed on the pipeline.

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