CN219415795U - Wet and dry closed cooling tower - Google Patents

Abstract

The utility model provides a wet dual-purpose closed cooling tower futilely, includes the casing, fin nest of tubes, light pipe nest of tubes, connecting pipe, spraying system and exhaust system, fin nest of tubes sets up in light pipe nest of tubes top, is connected through the connecting pipe with the light pipe nest of tubes, and spraying system is used for spraying shower water to the light pipe nest of tubes on, wherein, the relative both sides of casing set up the air intake, go up the air intake setting in light pipe nest of tubes top, correspond with fin nest of tubes horizontal position, the fin nest of tubes outside is provided with the air intake shutter, goes up the angle that the shutter can be adjusted to the air intake shutter and closes the shutter. Through the dry-wet dual-purpose closed cooling tower, different cooling modes can be selected according to the outside air temperature, a large amount of water resources and electric power energy sources can be saved in cold seasons, visual fog clusters are reduced or eliminated, and meanwhile, occupied area and equipment investment can be reduced.

Description

Wet and dry closed cooling tower

Technical Field

The utility model belongs to the technical field of cooling towers, and particularly relates to a dry-wet closed cooling tower.

Background

The closed cooling tower is characterized in that a tubular heat exchanger is arranged in the tower, and spray water is sprayed onto the surface of a heat exchange tube for evaporating and heat exchanging to achieve the purpose of cooling. Due to the closed circulation, the water quality can be guaranteed not to be polluted, the efficient operation of the main equipment is well protected, and the service life is prolonged.

At present, a closed cooling tower mostly adopts a secondary cooling mode of fin tube group air cooling and light tube group spray cooling, but the current water resource is more and more intense, and especially in areas such as Xinjiang, inner Mongolia and the like, the spray cooling is stopped under the condition of low outside air temperature, and only air cooling is relied on. In order to ensure the air cooling effect, the heat exchange area is increased by increasing the number of the fin tube groups, which is achieved by increasing the floor space of the cooling tower or increasing the number of the cooling towers. Thus, while saving water resources, a great deal of land resources are wasted, and meanwhile, the difficulty of transportation and the purchase cost of the closed cooling tower are increased.

In addition, in autumn and winter, the closed cooling tower can discharge a large amount of fog at the air outlet, and the cold air is condensed into water drops, so that the surrounding environment is damaged.

Based on the above description, there is a need for a closed cooling tower capable of switching cooling modes according to seasonal environments, while maximizing water and land resource saving, and reducing or eliminating visible fog clusters.

Disclosure of Invention

The utility model aims to provide a dry-wet closed cooling tower, which solves the problem that the closed cooling tower is switched to a cooling mode according to the ambient temperature and the problem that the occupied area or the number of equipment is required to be increased when the spray water cooling is stopped.

In order to achieve the purpose, the specific technical scheme of the dry-wet closed cooling tower is as follows:

the utility model provides a wet dual-purpose closed cooling tower futilely, includes casing, fin nest of tubes, light pipe nest of tubes, connecting pipe, spraying system and exhaust system, and the fin nest of tubes sets up in light pipe nest of tubes top, is connected through the connecting pipe with the light pipe nest of tubes, and spraying system is used for spraying shower water on the light pipe nest of tubes, wherein, the relative both sides of casing set up the air intake, and the air intake sets up in light pipe nest of tubes top, corresponds with fin nest of tubes horizontal position, and the fin nest of tubes outside is provided with the air intake shutter.

Further, the upper air inlet shutter is an adjustable shutter, and the angle of the shutter can be adjusted and the shutter can be closed.

Further, the upper air inlet shutter is arranged in parallel with the fin tube group.

Further, the fin tube group is arranged on the inner side or the outer side of the upper air inlet.

Further, the fin tube groups are vertically placed.

Further, the fin tube groups are placed obliquely.

Further, the spray system comprises a water tank, a water pump, a spray pipe and a nozzle, wherein the nozzle is arranged above the light pipe group and faces the light pipe group.

Further, a water receiver is arranged between the fin tube group and the nozzle.

Further, the exhaust system comprises a lower air inlet and an exhaust cylinder, the lower air inlet is arranged on the cooling tower shell below the light pipe group, a lower air inlet shutter is arranged on the lower air inlet, and the exhaust cylinder is arranged at the upper end of the closed cooling tower.

The dry-wet dual-purpose closed cooling tower has the following advantages:

firstly, the dry-wet dual-purpose closed cooling tower can select dry, wet or mixed cooling modes according to weather conditions such as external temperature and the like, not only can ensure the cooling effect in each season, but also can reduce or stop using spray water in cold seasons, thereby avoiding the waste of a large amount of water resources and reducing the loss of electric energy. Secondly, the double-side air inlet fin tube group is added in the dry-wet dual-purpose closed cooling tower, so that the occupied area of equipment is reduced, the energy consumption of the equipment is saved, and the purchase cost of the closed cooling tower is saved while the cooling mode is switched. In addition, in cold autumn and winter, because air cooling is adopted, a large amount of water vapor is not generated, and therefore, the visible fog is reduced or eliminated while water resources are saved. In conclusion, the dry-wet dual-purpose closed cooling tower is a brand new direction of effective measures for industrial water saving and defogging, and has a good application prospect in large chemical circulating water fields.

Drawings

FIG. 1 is an external schematic view of a wet and dry closed cooling tower of the present utility model;

FIG. 2 is a schematic view of the inside of the wet and dry closed cooling tower of the present utility model;

FIG. 3 is a schematic view of the dry and wet dual-purpose closed cooling tower fin tube set of the present utility model vertically arranged inside the upper air outlet;

FIG. 4 is a schematic view of the utility model showing the vertical arrangement of the fin tube set of the wet and dry closed cooling tower outside the upper air outlet;

FIG. 5 is a schematic view showing the structure in which a fin tube group of a wet-dry closed cooling tower of the present utility model is obliquely arranged in an upper air outlet;

FIG. 6 is a schematic view showing the structure in which the fin tube group of the wet and dry closed cooling tower of the present utility model is obliquely arranged outside the upper air outlet;

in the figure:

1. a housing; 2. a fin tube group; 3. a light pipe group; 4. a connecting pipe; 5. a water tank; 6. a water pump; 7. a spray pipe; 8. a nozzle; 9. a water collector; 10. a lower air inlet; 11. a lower air inlet shutter; 12. an upper air inlet; 13. a shutter of an upper air inlet; 14. an exhaust duct.

Detailed Description

For a better understanding of the purpose, structure and function of the present utility model, a dry and wet closed cooling tower according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the wet and dry closed cooling tower of the present utility model includes a housing 1, a fin tube group 2, and a light tube group 3, wherein the fin tube group 2 and the light tube group 3 are connected by a connection pipe 4, and a medium (hereinafter referred to as "medium") to be cooled can flow in the fin tube group 2 and the light tube group 3. The utility model also comprises a spray system, which comprises a water tank 5, a water pump 6, a spray pipeline 7 and a spray nozzle 8, wherein the spray nozzle 8 is arranged above the light pipe group 3 and faces the light pipe group 3, the water tank 5 is arranged at the lower part of the cooling tower and is used for collecting and storing spray water, the spray pipeline 7 is connected with the water tank 5 through the water pump 6, the water pump 6 can send the spray water in the water tank 5 into the spray pipeline, the spray pipeline 8 sprays the spray water downwards on the surface of the light pipe group 3 uniformly, a uniform water film is formed outside the light pipe group 3, the water film is evaporated and evaporated continuously, the heat of a medium in the light pipe group 3 is absorbed, and the medium cooling in the light pipe group 3 is realized. In the cooling process, most of spray water falls back down into the water tank 5 except a small amount of vaporized water, so that the spray water can be recycled, and the waste of water resources is avoided. It is contemplated that the water pump 6 may be disposed at any suitable location within or outside of the housing.

And a water receiver 9 is arranged above the nozzle 8, so that water drops entrained in saturated humid air formed by spray water sprayed on the light pipe set 3 can be recovered and recycled.

The dry-wet dual-purpose closed cooling tower also comprises an exhaust system, wherein the exhaust system comprises a lower air inlet 10 and an exhaust cylinder 14. The lower air inlet 10 is arranged on the cooling tower shell 1 below the light pipe group 3, the lower air inlet 10 is provided with a lower air inlet shutter 11, the air exhaust cylinder 14 is arranged at the upper end of the cooling tower, a fan impeller (not shown in the figure) is arranged in the air exhaust cylinder 14, the fan impeller is driven to rotate by a motor, so that air in the cooling tower is exhausted upwards by the air exhaust cylinder 14, air outside the tower enters the tower through the lower air inlet 10, and then cool air outside the tower is brought into the tower, and bottom-up airflow is formed in the cooling tower.

In order to realize the dual-purpose of drying and wetting of the closed cooling tower, namely, the operation of a spraying system can be stopped in low-temperature weather in winter and spring and autumn, air cooling is adopted to exchange heat, as shown in fig. 1 and 2, the upper air inlets 12 are arranged on two opposite sides of the shell 1 of the closed cooling tower for drying and wetting, the upper air inlets 12 are arranged above the water receiver 9 and correspond to the horizontal position of the fin tube set 2, the fin tube set 2 can be arranged on the inner side (as shown in fig. 3) or the outer side (as shown in fig. 4) of the upper air inlets 12, the upper air inlet louver 13 is vertically arranged on the outer side of the fin tube set 2, the upper air inlets 12 and the upper air inlet louver 13 are matched with the fin tube set in size, and the upper air inlet louver 13 is arranged in parallel with the fin tube set 2.

Further, the upper air intake louver 13 is provided as an adjustable louver, which can be opened/closed according to the cooling mode of the cooling tower, or the louver angle can be adjusted to adjust the air intake quantity of the upper air intake.

As an alternative to the above embodiment, the fin tube groups may be disposed obliquely, i.e., at an angle to the vertical, and likewise, the fin tube groups may be disposed inside (as shown in fig. 5) or outside (as shown in fig. 6) the upper air intake 12.

The closed cooling tower for dry and wet use of the utility model is provided with the upper air inlet 12 and the upper air inlet shutter 13 compared with the traditional closed cooling tower, so that under the condition of not increasing the number of the fin tube groups and occupying more land area, a dry cooling mode, a wet cooling mode or a mixed cooling mode can be selected according to the climatic conditions such as external temperature, wherein the dry cooling mode is that only the fin tube groups 2 are used for air cooling, the wet cooling mode is that only the light tube groups 3 are used for spray cooling, and the mixed cooling mode is that the two-stage cooling mode is that the air cooling and the spray cooling mode is that the medium firstly enters the fin tube groups 2 for first-stage cooling and then enters the light tube groups 3 for heat exchange with spray water, so that the second-stage cooling is realized.

In hot summer, the outside air temperature is too high, the air cooling effect is poor, the upper air inlet louver 13 can be closed, and the medium is cooled mainly by means of heat exchange between the light pipe group 3 and spray water. In winter, the outside air temperature is low, and the effect of medium cooling can be achieved by only heat exchange between the fin tube group 2 and the outside air, so that the upper air inlet louver 13 can be opened, and the spraying system (namely, the water pump 6) is closed to perform air cooling. In spring and autumn, the expected cooling effect cannot be achieved only by air cooling, and the upper air inlet louver 13 and the spraying system can be simultaneously opened, so that a mixed cooling mode of air cooling and spray water cooling is realized. The dry-wet closed cooling tower can select a cooling mode according to the outside air temperature, so that the use of spray water can be greatly reduced or stopped in low-temperature weather in winter and spring and autumn, a large amount of water resources can be saved, the waste of the water resources is avoided, and a large amount of electric energy can be saved.

The fin tube group of the dry-wet dual-purpose closed cooling tower adopts a double-side air inlet mode, so that the heat exchange area of the fin tube group can be increased, the number of equipment is reduced, the expected dry-cold effect can be achieved, and the occupied area of the closed cooling tower is greatly reduced. In addition, in cold autumn and winter, because air cooling is adopted, a large amount of water vapor is not generated, and therefore, the visible fog is reduced or eliminated while water resources are saved.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (9)

1. The utility model provides a wet and dry dual-purpose closed cooling tower, includes casing, fin nest of tubes, light pipe nest of tubes, connecting pipe, spraying system and exhaust system, and the fin nest of tubes sets up in light pipe nest of tubes top, is connected through the connecting pipe with the light pipe nest of tubes, and spraying system is used for spraying spray water on the light pipe nest of tubes, its characterized in that, the relative both sides of casing set up the air intake, go up the air intake setting in light pipe nest of tubes top, correspond with fin nest of tubes horizontal position, be provided with the air intake shutter in the fin nest of tubes outside.

2. The dual-purpose closed cooling tower of claim 1, wherein the upper air inlet louver is an adjustable louver, and the adjustable louver is an angle adjustable louver and a shutter is closed.

3. The wet and dry closed cooling tower of claim 2, wherein the upper air inlet louver is disposed in parallel with the fin tube set.

4. The wet and dry closed cooling tower according to claim 1, wherein the fin tube group is disposed inside or outside the upper air intake.

5. The wet and dry closed cooling tower of claim 4 wherein the fin tube set is vertically disposed.

6. The wet and dry closed cooling tower of claim 4 wherein the fin tube set is inclined.

7. The wet and dry closed cooling tower of claim 1 wherein the spray system comprises a water tank, a water pump, a spray pipe and a nozzle, the nozzle being disposed above and toward the light pipe stack.

8. The wet and dry closed cooling tower according to claim 7, wherein a water receiver is provided between the fin tube group and the nozzle.

9. The dry-wet closed cooling tower according to claim 1, wherein the exhaust system comprises a lower air inlet and an exhaust cylinder, the lower air inlet is arranged on the cooling tower shell below the light pipe group, a lower air inlet shutter is arranged on the lower air inlet, and the exhaust cylinder is arranged at the upper end of the closed cooling tower.