CN211695958U - Water-saving fog-dispersing dry-wet cooling tower - Google Patents

Abstract

The utility model provides a water-saving fog-eliminating dry-wet cooling tower, which is provided with a two-stage dry cooling system, and comprises a pressure-bearing gas-liquid plate type air cooler and an active water collector, wherein a second air flow passage and a second water flow passage are arranged inside the pressure-bearing gas-liquid plate type air cooler and are used for carrying out primary dry heat exchange; the active water collector is arranged in the cooling tower and comprises a plurality of first hollow plates, a first cooling water flow channel is arranged in each first hollow plate, and a first air flow channel is formed between any two adjacent first hollow plates and is used for performing second-stage dry heat exchange; the utility model discloses a wet cooling tower is done to water conservation fog dispersal type through setting up pressure-bearing formula gas-liquid plate air cooler and active water collector, forms two-stage dry cooling system, can greatly promote dry wet cooling tower dry cooling load to account for, makes cooling tower outlet air humidity greatly reduced, compares with the wet cooling tower is done to the tradition, and water conservation performance and fog dispersal performance are promoted by a wide margin.

Description

Water-saving fog-dispersing dry-wet cooling tower

Technical Field

The utility model relates to a dry and wet cooling tower technical field, it is concrete, relate to a but water conservation fog dispersal type cooling tower of water ware is received to bearing plate heat exchanger and active high efficiency.

Background

The traditional cooling tower mainly takes away heat by spraying and evaporating circulating water so as to achieve the purpose of cooling. And (3) allowing ambient cold air to enter the cooling tower, and guiding and discharging the ambient cold air out of the tower through a fan at the top of the cooling tower after the ambient cold air is heated and humidified. Because the air after being heated and humidified is basically in a saturated state, the air after being discharged out of the tower is quickly condensed to form a plurality of tiny liquid drops when being cooled, and the liquid drops are dispersed in the air and show a white state through the refraction effect of sunlight, and the liquid drops are called as white fog or white smoke. The water is evaporated and condensed to form white fog, which leads to water being taken away and white waste on one hand; on the other hand, in winter or when the environmental temperature is low, the visibility of the surroundings is reduced due to the white fog, rainfall is formed around the cooling tower, potential safety hazards such as road icing are caused, and the production and the life of people are seriously hindered.

The existing dry-wet cooling tower adopts a mode of increasing a dry radiator, and replaces part of heat load of wet cooling with dry cooling, thereby reducing water evaporation capacity and achieving the purpose of saving water. The hot dry air generated by the dry radiator and the wet hot air generated by the wet cooling are mixed and then discharged, so that the unsaturation degree can be greatly reduced, and the dry air and the wet hot air are not easy to generate white fog or white smoke after being discharged from the air duct.

The dry radiators adopted by the existing dry and wet cooling tower are mainly tubular heat exchangers (light pipes or finned pipes), unpressurized open water spray gas-liquid orthogonal membrane heat exchangers and the like. The pressure-bearing finned tube heat exchanger is mostly made of metal materials, and when the heat exchanger is used in the environment, the common metal materials are easy to corrode and block, and the corrosion-resistant materials are high in manufacturing cost; the open type water spraying gas-liquid orthogonal membrane heat exchanger has relatively low manufacturing cost, but can not bear pressure, is difficult to carry out multi-pass arrangement, has relatively low heat exchange area in a limited space and has low heat exchange capacity. These all result in the dry-wet cooling tower in the dry cooling load ratio is limited, and cooling or wet cooling is the main, and the water conservation efficiency is relatively limited.

The existing water collector of the cooling tower mostly adopts the forms of baffle plates or corrugated plates and the like, and achieves gas-liquid separation by means of collision action, inertia force and the like to collect moisture carried by air in the tower. The water collecting mode has good effect on large water drop particles, has limited water collecting efficiency on extremely small water drops, and can not collect gaseous water. The water collecting effect of the water collector of the cooling tower can be further deeply dug.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a water conservation fog dispersal type is wet cooling tower futilely to solve the problem that the water conservation performance and the fog dispersal performance of traditional wet cooling tower are relatively poor among the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a water-saving fog-eliminating dry-wet cooling tower is provided with a two-stage dry cooling system, which comprises a pressure-bearing gas-liquid plate type air cooler and an active water collector, wherein a second air flow channel and a second water flow channel are arranged in the pressure-bearing gas-liquid plate type air cooler and are used for carrying out first-stage dry heat exchange; the active water collector is arranged inside the cooling tower and comprises a plurality of first hollow plates, a first cooling water flow channel is arranged inside each first hollow plate, and a first air flow channel is formed between any two adjacent first hollow plates and used for secondary dry heat exchange.

Furthermore, the inlet of the first cooling water flow channel is communicated with the water collecting tank through a water pump, and the outlet of the first cooling water flow channel is communicated with the secondary spray water pipe.

Further, the active water collector comprises a first water dividing pipe, a collecting pipe and a plurality of first hollow plates, wherein the inlet ends of the first hollow plates are connected with the first water dividing pipe, the outlet ends of the first hollow plates are connected with the collecting pipe, the water inlets of the first water dividing pipe are connected with a water pump through a water feeding pipe, and the water outlets of the collecting pipe are connected with a secondary spray water pipe.

Further, in the vertical direction, the first hollow plate is a bent or curved hollow plate structure.

Further, the first hollow plate includes spoiler fins extending toward the first air flow passage.

Furthermore, the pressure-bearing gas-liquid plate type air cooler comprises a second water distribution pipe, a water collection pipe and a plurality of second hollow plates, wherein a second water flow channel is arranged inside each second hollow plate, and a second air flow channel is formed between any two adjacent second hollow plates.

Furthermore, the end of intaking of cavity board is connected with the second branch water pipe in the second, the play water end and the collector pipe of cavity board are connected in the second, the export and the primary spray water piping connection of collector pipe.

Furthermore, a plurality of second water flow channels are arranged in the second hollow plate, and any two adjacent second water flow channels are separated by a partition plate.

Furthermore, a flow deflector is arranged in the mixing chamber of the cooling tower.

Compared with the prior art, a water conservation fog dispersal type is wet cooling tower futilely has following advantage:

a wet cooling tower is done to water conservation fog dispersal type, through setting up pressure-bearing formula gas-liquid plate air cooler and active water collector, form two-stage dry cooling system, can greatly promote dry wet cooling tower dry cooling load to account for, make cooling tower outlet air humidity greatly reduced, compare with the wet cooling tower is done to the tradition, water conservation performance and fog dispersal performance are promoted by a wide margin.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a water-saving fog-dispersing dry and wet cooling tower according to an embodiment of the present invention;

fig. 2 is a top view of an active water collector in a water-saving fog-dispersing dry and wet cooling tower according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of an active water collector in a water-saving fog-dispersal dry-wet cooling tower according to an embodiment of the present invention in a side view direction;

fig. 4 is a schematic structural diagram of a first hollow plate in a water-saving fog-dispersal dry-wet cooling tower according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a pressure-bearing air-liquid plate type air cooler in a water-saving fog-dispersal dry-wet cooling tower according to an embodiment of the present invention;

fig. 6 is a schematic view of an internal heat exchange passage of a pressure-bearing air-liquid plate type air cooler in a water-saving fog-dispersal dry-wet cooling tower according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a second hollow plate in a water-saving fog-dispersal dry-wet cooling tower according to an embodiment of the present invention;

fig. 8 is another schematic structural diagram of the first hollow plate in the water-saving fog-dispersal dry-wet cooling tower according to the embodiment of the present invention;

fig. 9 is another schematic structural diagram of the second hollow plate in the water-saving fog-dispersal dry-wet cooling tower according to the embodiment of the present invention.

Description of reference numerals:

an air duct 1; a fan 2; a pressure-bearing gas-liquid plate type air cooler 3; a first adjustable blind 4; a second adjustable blind 5; a primary spray header 6; an active water collector 7; a water supply pipe 8; a water pump 9; a secondary spray header 10; a water collection tank 11; a first hollow plate 12; a spoiler fin 121; a first air flow passage 13; a first cooling water flow passage 14; a water inlet 15; a first water distribution pipe 16; a water outlet 17; a manifold 18; a second water distribution pipe 19; a header pipe 20; a second air flow passage 21; a second water flow passage 22; a second hollow plate 23; a flow deflector 24; cooling tower fill 25.

Detailed Description

The inventive concepts of the present disclosure will be described hereinafter using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. These utility concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. Meanwhile, in the drawings of the present application, hollow arrows indicate the flow direction of a gaseous medium including air, water vapor, and other gaseous substances; black solid arrows indicate the flow direction of the cooling water.

In addition, it should be noted that in this application, the cold air formed after heat exchange by the active water collector 7 is still air with a relatively high temperature, and for convenience of description, it is referred to as "cold air" compared with the hot dry air formed after heat exchange by the pressure-bearing air-liquid plate air cooler 3.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

In the prior art, because the proportion of dry cooling load in the traditional dry-wet cooling tower is limited, the cooling is mainly wet cooling, and the water-saving efficiency is relatively limited; meanwhile, the water collector of the cooling tower mostly adopts the forms of baffle plates or corrugated plates and the like, and gas-liquid separation is achieved by means of collision action, inertia force and the like, so that the water collecting effect is poor, and the fog dissipation performance of the cooling tower is poor.

In order to solve the problem that the water saving performance and the fog dispersal performance of the traditional dry and wet cooling tower in the prior art are poor, the embodiment provides a water saving and fog dispersal dry and wet cooling tower, as shown in the attached fig. 1-7, wherein the top of the cooling tower is provided with an air duct 1 and a fan 2, and the bottom of the cooling tower is provided with a water collecting tank 11 and a second adjustable shutter 5;

the cooling tower is provided with a two-stage dry type cooling system which comprises a pressure-bearing gas-liquid plate type air cooler 3 and an active water collector 7, a second air flow passage 21 and a second water flow passage 22 are arranged in the pressure-bearing gas-liquid plate type air cooler 3, used for carrying out first-stage dry heat exchange on high-temperature cooling water entering a cooling tower, a first adjustable shutter 4 is arranged at the air inlet end of the pressure-bearing gas-liquid plate type air cooler 3, used for introducing external air into the second air flow channel 21, the air outlet end of the pressure-bearing air-liquid plate type air cooler 3 is communicated with a mixing chamber of a cooling tower, the water inlet end of the pressure-bearing gas-liquid plate type air cooler 3 is used for receiving high-temperature cooling water, the water outlet end of the pressure-bearing gas-liquid plate type air cooler 3 extends into the cooling tower, and is connected with a primary spray water pipe 6, so that the water after heat exchange is sprayed above the cooling tower filler 25.

High-temperature cooling water exchanges heat through a pressure-bearing gas-liquid plate type air cooler 3, and is sprayed into the cooling tower through a primary spray header 6, part of liquid water is evaporated to form steam to rise, and meanwhile, small droplets rise together with the steam;

the active water collector 7 is arranged inside the cooling tower, the active water collector 7 comprises a plurality of first hollow plates 12, first cooling water channels 14 are arranged inside the first hollow plates 12, a first air channel 13 is formed between any two adjacent first hollow plates 12, namely the first cooling water channels 14 and the first air channel 13 perform recuperative heat exchange through the plate walls of the first hollow plates 12, and perform secondary dry heat exchange on water vapor formed inside the cooling tower; the inlet of the first cooling water flow channel 14 is communicated with the water collecting tank 11 through the water pump 9 and is used for conveying water in the water collecting tank 11 to the first cooling water flow channel 14, and the outlet of the first cooling water flow channel 14 is communicated with the secondary spray water pipe 10 and is used for spraying the heat-exchanged water above the cooling tower filler 25.

Therefore, in the embodiment, water to be cooled firstly passes through the pressure-bearing gas-liquid plate type air cooler 3 for dry heat exchange, then is sprayed through the primary spray header 6, and the sprayed water is directly contacted with air entering from the bottom of the cooling tower for wet heat exchange; most of spray water flows into a water collecting tank 11, the air after heat exchange carries water vapor, small droplets flow upwards and pass through an active water collector 7, dry heat exchange is carried out while water is collected, on one hand, the small droplets carried by the air achieve gas-liquid separation through collision action, inertia force and the like, on the other hand, the air is cooled through the heat exchange action of the active water collector 7, the water vapor in the air is condensed and separated out, the water vapor carried in the air is also separated out, then cold air formed after heat exchange of the active water collector 7 and hot dry air formed after heat exchange of a pressure-bearing gas-liquid plate type air cooler 3 enter a cooling tower mixing chamber together to be mixed, and the cold air and the hot dry air are discharged through an air duct 1 at the top of the cooling tower.

Thereby this embodiment is through setting up pressure-bearing formula gas-liquid plate air cooler 3, active water collector 7 on the cooling tower, because the two all has dividing wall type heat transfer function for carry out two-stage dry-type heat transfer process in whole cooling process, can very big promotion dry-type cooling tower dry-type cooling load account for, make cooling tower export air humidity greatly reduced, this compares with traditional dry-type wet cooling tower, and its water conservation performance and defogging performance have obtained promoting by a wide margin.

In addition, this embodiment sets up water conservancy diversion piece 24 in the cooling tower mixing chamber for cold air, the hot dry air to getting into in the mixing chamber carries out the water conservancy diversion, has increased the vortex effect in the mixing chamber on the one hand, is favorable to cold air, the hot dry air intensive mixing in the mixing chamber, and on the other hand is favorable to leading the gas flow direction, makes the gas after mixing can smoothly discharge the cooling tower.

Example 2

As shown in fig. 1 to 7, in this embodiment, based on embodiment 1, specific configurations of a pressure-bearing gas-liquid plate type air cooler 3 and an active water collector 7 are described;

for the active water collector 7, the active water collector comprises a first water dividing pipe 16, a collecting pipe 18 and a plurality of first hollow plates 12, a first cooling water channel 14 is arranged inside each first hollow plate 12, and a first air channel 13 is formed between any two adjacent first hollow plates 12; for the communication structure of the first cooling water flow channels 14 of any one of the first hollow plates 12, the inlet end of the first hollow plate 12 is connected with a first water dividing pipe 16, the outlet end of the first hollow plate 12 is connected with a collecting pipe 18, the water inlet 15 of the first water dividing pipe 16 is connected with a water pump 9 through a water feeding pipe 8, and the water outlet 17 of the collecting pipe 18 is connected with a secondary spray water pipe 10.

As for the pressure-bearing gas-liquid plate type air cooler 3, the pressure-bearing gas-liquid plate type air cooler belongs to a plate type heat exchanger, but different from a conventional plate type heat exchanger, the pressure-bearing gas-liquid plate type air cooler 3 comprises a second water distribution pipe 19, a water collection pipe 20 and a plurality of second hollow plates 23, a second water flow passage 22 is arranged inside each second hollow plate 23, and a second air flow passage 21 is formed between any two adjacent second hollow plates 23; for the communicating relation of the second water flow channel 22 of any one of the second hollow plates 23, the water inlet end of the second hollow plate 23 is connected with the second water dividing pipe 19, the water outlet end of the second hollow plate 23 is connected with the water collecting pipe 20, the second water dividing pipe 19 is used for dividing the entering high-temperature cooling water, and the outlet of the water collecting pipe 20 is connected with the primary spray water pipe 6.

In addition, in this embodiment, the active water collector 7 further includes auxiliary components such as a supporting member, and the pressure-bearing gas-liquid plate air cooler 3 further includes auxiliary components such as a housing and a supporting member, which are not described herein again in view of their conventional component structures.

Example 3

As shown in fig. 3 to 9, the present embodiment describes the first hollow plate 12 and the second hollow plate 23 based on embodiment 2;

for the first hollow plate 12, as shown in fig. 4 or fig. 8, in the vertical direction, the first hollow plate 12 is a bent or curved hollow plate structure, that is, in the vertical direction, both the first air flow channel 13 and the first cooling water flow channel 14 are bent or curved, so that on one hand, the heat exchange area of the gas and the liquid is increased, the heat exchange efficiency is improved, on the other hand, the collision effect between the first hollow plate 12 and small liquid droplets in the air is increased, and the efficiency of gas and liquid separation is improved.

In addition, the plate body of the first hollow plate 12 further includes a spoiler fin 121, and the spoiler fin 121 extends toward the first air flow channel 13, so that the collision effect between the first hollow plate 12 and small liquid droplets in the air is further increased, and the efficiency of gas-liquid separation is improved.

As for the second hollow plate 23, as shown in fig. 7 or fig. 9, a plurality of second water flow passages 22 are provided in the second hollow plate 23, and any two adjacent second water flow passages 22 are separated by a partition; the cross-sectional opening of the second water flow passage 22 is at least one of a polygonal opening, a square opening, a circular opening or a special-shaped opening.

In addition, the first hollow plate 12, the second hollow plate 23 are made by macromolecular material, and on the one hand, the density of macromolecular material will be less than the density of traditional metal material, is favorable to reducing the weight of corresponding part, the processing assembly of being convenient for, and on the other hand, the corrosion resistance of macromolecular material is good, and heat transfer performance is good, is difficult for bonding filth to can not produce the condition of corruption and jam, long service life, cost and operation maintenance cost are low, have wide industrial application prospect.

Example 4

The practical application of the cooling tower is described in the embodiment on the basis of any one of the embodiments 1 to 3;

during actual production and assembly, the first adjustable shutter 4 of the pressure-bearing gas-liquid plate type air cooler 3 can be set to be large enough to ensure that the pressure-bearing gas-liquid plate type air cooler has a sufficient heat exchange area, when the environmental temperature in winter is lower, only the first adjustable shutter 4 is opened, and the second adjustable shutter 5 is closed, so that the cooling tower only runs in a dry mode, almost completely has no fog, and the water saving rate is close to 100%;

when summer or the ambient temperature is higher, the first adjustable shutter 4 and the second adjustable shutter 5 are opened simultaneously, so that the outside air entering the cooling tower from the lower part passes through the filler 25 of the cooling tower and is directly contacted with spray water for heat exchange to become damp and hot air; the damp and hot air is cooled, condensed, dehumidified and demisted upwards through the active water collector 7 and then enters the mixing chamber; meanwhile, the outside air entering the cooling tower from the upper part and the hot dry air after heat exchange and temperature rise through the pressure-bearing type gas-liquid plate type air cooler 3 also enter the mixing chamber; after the two air flows are fully and uniformly mixed under the action of the flow deflector 24, the relative unsaturation degree of the mixed air is greatly improved, and then the mixed air is discharged out of the cooling tower through the air duct 1 under the action of the fan 2, so that the phenomena of fogging, condensation and the like can not occur when the cooling tower works in summer with higher temperature.

Meanwhile, in the process, the opening degrees of the first adjustable shutter 4 and the second adjustable shutter 5 are reasonably adjusted, the respective air inlet volumes of the dry-wet cooling mode are distributed, the wet-type cooling load ratio is reduced as much as possible, the evaporation capacity of circulating water is reduced, the purpose of saving water is achieved, and meanwhile, favorable conditions are created for fog dissipation.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The water-saving fog-eliminating dry-wet cooling tower is characterized by comprising a two-stage dry cooling system, a water-saving dry-wet cooling tower and a water-saving dry-wet cooling tower, wherein the water-saving fog-eliminating dry-wet cooling tower comprises a pressure-bearing gas-liquid plate type air cooler (3) and an active water collector (7), and a second air flow channel (21) and a second water flow channel (22) are arranged in the pressure-bearing gas-liquid plate type air cooler (3) and are used for performing first-stage dry heat exchange; the active water collector (7) is arranged inside the cooling tower, the active water collector (7) comprises a plurality of first hollow plates (12), a first cooling water flow channel (14) is arranged inside each first hollow plate (12), and a first air flow channel (13) is formed between any two adjacent first hollow plates (12) and used for secondary dry heat exchange.

2. The water-saving fog-dispersing type dry-wet cooling tower as claimed in claim 1, wherein the inlet of the first cooling water flow passage (14) is communicated with the water collecting tank (11) through a water pump (9), and the outlet of the first cooling water flow passage (14) is communicated with the secondary spray water pipe (10).

3. The water-saving fog-eliminating type dry and wet cooling tower as claimed in claim 2, wherein the active water collector (7) comprises a first water dividing pipe (16), a collecting pipe (18) and a plurality of first hollow plates (12), the inlet ends of the first hollow plates (12) are connected with the first water dividing pipe (16), the outlet ends of the first hollow plates (12) are connected with the collecting pipe (18), the water inlets (15) of the first water dividing pipes (16) are connected with the water pump (9) through the water feeding pipe (8), and the water outlets (17) of the collecting pipe (18) are connected with the secondary spray water pipes (10).

4. The water-saving fog-eliminating type dry and wet cooling tower as claimed in claim 1, wherein the first hollow plate (12) is a bent or curved hollow plate structure in a vertical direction.

5. The water-saving fog-dispersal type dry-wet cooling tower as claimed in claim 4, wherein the first hollow plate (12) comprises a turbulator fin (121), the turbulator fin (121) extending into the first air flow passage (13).

6. The water-saving fog dispersal type dry and wet cooling tower of claim 1, wherein the pressure-bearing type air-liquid plate air cooler (3) comprises a second water distribution pipe (19), a water collection pipe (20) and a plurality of second hollow plates (23), a second water flow passage (22) is arranged inside the second hollow plates (23), and a second air flow passage (21) is formed between any two adjacent second hollow plates (23).

7. The water-saving fog-dispersing type dry-wet cooling tower as claimed in claim 6, wherein the water inlet end of the second hollow plate (23) is connected with a second water dividing pipe (19), the water outlet end of the second hollow plate (23) is connected with a water collecting pipe (20), and the outlet of the water collecting pipe (20) is connected with the primary spray water pipe (6).

8. The water-saving fog-dispersing type dry-wet cooling tower as claimed in claim 6, wherein a plurality of second water flow passages (22) are arranged in the second hollow plate (23), and any two adjacent second water flow passages (22) are separated by a partition plate.

9. The water-saving fog dispersal type dry and wet cooling tower of claim 1, wherein a flow deflector (24) is disposed in the mixing chamber of the cooling tower.

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