CN216049277U - Fog dispersal device and cooling tower - Google Patents

Abstract

The utility model relates to the technical field of cooling towers, in particular to a fog dissipation device. This fog dispersal device includes: the first flow path and the second flow path are stacked and are used for carrying out heat exchange on the first airflow and the second airflow flowing from bottom to top; the width of the fog dispersal device is composed of two sections, and a first inflow part communicated with the first flow path is formed on one section of the width of the bottom of the fog dispersal device; a second inflow part communicated with the second flow path is formed at the other section of the bottom width of the fog dispersal device; the first inflow part and the second inflow part respectively occupy half of the full width of the fog dispersal module; an air guide structure for guiding the first air flow and/or the second air flow to the range of the approximate full width of the fog dispersal device is formed in the first flow path and/or the second flow path. The fog dispersal device can play the roles of water saving and fog dispersal. The cooling tower comprises the fog dispersal device.

Description

Fog dispersal device and cooling tower

Technical Field

The utility model relates to a cooling tower, in particular to a cooling tower with water-saving and fog-dispersing requirements.

Background

In a cooling tower of the prior art, an air mixing portion, a water collecting mist capturing portion, a spraying portion, a heat exchanging portion, an air introducing portion, and a water collecting portion are provided in the cooling tower body in this order from top to bottom. The upper part of the body is provided with an exhaust part which comprises an air duct and an induced draft fan arranged in the air duct. And spraying water from the spraying part to the heat exchange part, wherein the heat exchange part is formed by laminating a plurality of filler sheets, the sprayed water flows from top to bottom, and on the other hand, air is sucked into the cooling tower from an air inlet part at the lower part of the cooling tower, flows from bottom to top, and transfers heat and mass with the sprayed hot water, so that the temperature of the hot water is reduced.

And the air after the heat exchange with the water is discharged from the wind barrel of the cooling tower. The discharged air is saturated humid air, and after the air is mixed with cold air outside the tower, the temperature is reduced, the saturated moisture content is reduced, and then supersaturated water vapor can be condensed into mist. Particularly in winter in high latitude areas, the exhaust of the cooling tower can form dense fog, further rain and snow fall, the environment is adversely affected, and more seriously, the equipment and the ground are frozen to form freeze injury.

The attached figure 1 shows the basic structure of a cooling tower in the prior art, wet and hot air in the cooling tower flows into n small-volume channels A in a diamond-shaped module from a large-volume channel A below the module at an elevation angle of 45 degrees left, and after heat release, temperature reduction and water condensation, the discharged wet and hot air continues to flow into a channel A at an elevation angle of 45 degrees left and then is converged into a wet and hot air group A'. And dry and cold air enters the channel B of the module from the lower roadway B, and after absorbing heat, the dry and cold air becomes dry and warm air and flows out of the module, and enters the upper roadway B to become a dry and warm air group B'. The wet heating air group A 'and the dry warm air group B' are gradually mixed, and after uniform mixing, the moisture content is unsaturated, so that the fog dissipation effect is achieved. However, the prior art has the following problems:

the water heater is roughly divided into m/2 wet heating groups A 'and m/2 dry warm air groups B' which are adjacent to each other by arranging m diamond-shaped modules, wherein the width of each group is 1-2 meters, the length of each group is generally more than 10 meters, the amount of each group is large, and if the water heater is mixed uniformly, the water heater needs to flow upwards for a long distance, namely a high mixing space is provided above the vertex angle of the module. Therefore, the cooling tower is significantly increased in height and cost. However, the height of the old tower cannot be increased.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above problems, and provides a mist eliminator which performs a function of saving water and eliminating mist by exchanging heat between air subjected to heat exchange with water and outside cold air which flows into a cooling tower and does not exchange heat with the air in the mist eliminator, and a cooling tower.

In order to achieve the above technical object, an embodiment of the present invention provides a fog dispersal device, including: the first flow path and the second flow path are stacked and are used for carrying out heat exchange on the first airflow and the second airflow flowing from bottom to top; the width of the fog dispersal device consists of two sections, and a first inflow part communicated with the first flow path is formed at one section of the width of the bottom of the fog dispersal device; a second inflow part communicated with the second flow channel is formed at the other section of the bottom width of the fog dispersal device; the first inflow portion and the second inflow portion each occupy half of the substantially full width of the defogging module; an air guide structure for guiding the first air flow and/or the second air flow to substantially the full width of the mist eliminator is formed in the first flow path and/or the second flow path.

Further, the fog dispersal device comprises a first fog dispersal sheet and a second fog dispersal sheet which limit the first flow path and the second flow path, wherein the first fog dispersal sheet and the second fog dispersal sheet are alternately stacked.

Furthermore, wind-guiding structure includes first wind-guiding protruding arris portion and the protruding arris portion of second wind-guiding, intermittent setting between first wind-guiding protruding arris portion and the protruding arris portion of second wind-guiding forms airflow channel.

Furthermore, a first protruding strip-shaped convex rib is formed on the surface of the first fog dispersal sheet; a second protruding rib corresponding to the first protruding rib is formed on the surface of the second fog dispersal sheet; the first air guide rib is formed, and the ridge top of the first strip-shaped rib is connected with the ridge top of the second strip-shaped rib in a sealing mode.

Furthermore, a third protruding rib is formed on the surface of the first fog dispersal sheet; a fourth protruding rib which protrudes and corresponds to the third protruding rib is formed on the surface of the second fog dispersal sheet; and the ridge top of the third strip-shaped convex rib is hermetically connected with the ridge top of the fourth strip-shaped convex rib.

Further, the first strip-shaped convex rib extends upwards from the bottom end of the first fog dispersal sheet in an inclined mode; the second strip-shaped convex edge extends upwards from the bottom end of the second fog dissipation sheet in an inclined mode.

Further, the third strip-shaped convex rib extends obliquely upwards from the air flow channel; the fourth rib extends obliquely upward from the air flow passage.

Furthermore, an included angle α between the first air guide convex edge portion and the horizontal plane is greater than or equal to an included angle β between the second air guide convex edge portion and the horizontal plane.

Another aspect of the present invention provides a cooling tower comprising the fog dispersal device as defined in any of the above claims.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

the air guide structures are respectively arranged in the first flow path and the second flow path, so that the first air flow and the second air flow which flow in through the first inflow part and the second inflow part can be guided to the range of the approximate full width of the fog dispersal device, the heat exchange efficiency is increased, and the fog dispersal effect is improved.

Drawings

FIG. 1 is a sectional elevation view of a prior art cooling tower;

FIG. 2 is a sectional elevation view of a cooling tower according to a first embodiment of the present invention;

FIG. 3 is a disassembled view of the defogging module according to the first embodiment of the present invention;

fig. 4 is a schematic layout of an air guiding structure according to a second embodiment of the present invention;

fig. 5 is a structural schematic of the first antifogging sheet in the present embodiment;

fig. 6 is a schematic structure of the second defogging sheet in the present embodiment.

Description of the reference numerals

1000-cooling tower; 1010 a body; 1020 an exhaust part; 1021 an air duct; 1022 of the induced draft fan; 1100 an air mixing part; 1200 a spray part; 1300 a heat exchanging section; 1400 air introduction part; 1500 water collecting part; 1600 fog dispersal parts; 1211 a spray head; a, heating a wet gas tunnel; b, dry cold air laneway; a 1231 separator; a' wet heating group; b' dry warm wind group;

1601-1605 fog dispersal devices; C. c' a first fog dispersal sheet; D. d' a second fog dispersal sheet;

1601C a first flow path; 1601D a second flow path;

1610 a first inflow part; 1620 a second inflow portion; 1630 a first linear rib; 1640 second rib; 1650 third strip-shaped bead; 1660 a fourth rib; 1670 a first outflow section; 1680 second outflow part.

Detailed Description

Other objects and advantages of the present invention will become apparent by the following explanation of preferred embodiments of the present invention.

[ first embodiment ] to provide a liquid crystal display device

Fig. 2 shows a schematic structure of each part in the cooling tower of the present embodiment.

Fig. 2 is a schematic configuration of a cooling tower according to a first embodiment of the present invention. As shown in fig. 2, an air mixing unit 1100, a mist eliminating unit 1600, a shower unit 1200, a heat exchanging unit 1300, an air introducing unit 1400, and a water collecting unit 1500 are provided in a main body 1010 of a cooling tower 1000 from top to bottom. An exhaust part 1020 is provided at an upper portion of the body 1010, and the exhaust part 1020 includes an air duct 1021 and an induced draft fan 1022 provided in the air duct 1021.

According to the cooling tower, the plurality of sets of nozzles 1211 disposed above the shower part 1200 shower hot water downward, and the hot water drops in the internal space of the shower part 1200 and enters the heat exchange part 1300. In the heat exchange unit, hot water exchanges heat with cold air flowing in from the bottom of the heat exchange unit 1300, flows out from the bottom of the heat exchange unit 1300, passes through the air introduction unit 1400, falls to the water collection unit 1500, and is collected from the bottom of the main body 1010 of the cooling tower 1000. The heat exchange portion 1300 may employ conventional packing sheets.

In this embodiment, a plurality of partition plates 1231 arranged in parallel are provided below the fog dispersal portion 1600, and a plurality of hot and humid air tunnels a and a plurality of dry air tunnels B are partitioned below the fog dispersal portion 1601 by the plurality of partition plates.

Therefore, dry cold wind energy outside the tower flows into the fog dispersal part 1600 through the dry cold wind tunnel B, flows through the first flow paths of the fog dispersal devices 1601-1605 in the fog dispersal part 1600 and flows to the air mixing part 1100; in the hot and humid air tunnel a, the dry and cool air flowing from the air inlet 1400 flows through the heat exchange part 1300 for spraying hot water to contact with the hot water and exchange heat to form hot and humid air, the hot and humid air also flows upwards to the second flow paths of the fog dispersal devices 1601 to 1605 to the air mixing part 1100 to be mixed with the dry and cool air, after mixing, the hot and humid air is changed from a saturated state to an unsaturated state, and the dry and humid air is discharged out of the cooling tower without fog, so that fog dispersal is realized.

The following describes the mist eliminator of the present embodiment, taking the mist eliminator 1601 (any one of the mist eliminators 1601 to 1605) as an example.

The fog dispersal device 1601 comprises a first flow path 1610C and a second flow path 1610D which are stacked, and exchanges heat between a first airflow and a second airflow flowing from bottom to top; a first outflow portion 1670 that discharges the first airflow flowing out of the first flow path 1610C to above the defogging device 1601; a second outflow portion 1680 for discharging the second airflow flowing out of the second flow path 1610D to above the defogging device 1601; and the width dimension of the defogging device 1601 is composed of two sections, and a first inflow portion 1610 which is communicated with the first flow channel 1610C is formed at one section of the bottom width of the defogging device 1601; a second inflow portion 1620 communicating with the second flow path 1610D is formed at another section of the bottom width of the defogging device 1601. The first inflow 1610 and the second inflow 1620 each occupy approximately half of the full width of the defogging module 1601. The first and second flow paths 1601C, 1601D are provided in a stacked manner, and occupy substantially the entire width of the mist eliminator 1601. The first and second outflow portions 1670 and 1680 are stacked and occupy substantially the entire width of the mist eliminator 1601, respectively. The dry and cold air enters the fog dispersal device 1601 to absorb heat and raise temperature to become dry and warm air. The damp and hot air enters the fog dispersal device 1601 to release heat and cool to become damp and warm air. The flow direction of the wet heating air and the flow direction of the dry warm air outlet are consistent, and the size and the shape of the outlet section are consistent; the cross section of the outlet of each channel is wide and thin, so that the outlet of the dry warm air is in a wide and thin air curtain, and the outlet of the wet warm air is in a wide and thin air curtain. According to the jet flow theory, the air curtain and the air curtain with the same flow direction and the same width are easy to mix, the required mixing distance is short, the required mixing space is short, the tower height can be reduced, and the cost is saved. The tower crane can adapt to the reconstruction of the old tower without increasing the height, thereby reducing the difficulty of the reconstruction of the old tower.

Wherein the first inflow 1610 is communicated with the dry-cold air tunnel B; the second inflow portion 1620 is communicated with the hot and humid air tunnel a. Both first outflow portion 1670 and second outflow portion 1680 communicate with air mixing portion 1100. Dry cool air in the dry cool air tunnel B enters the first flow path 1601C from the first inflow portion 1610, and is discharged to the air mixing portion 1100 through the first outflow portion 1670; the hot and humid air in the hot and humid air path a flows into the second flow path 1601D from the second inflow unit 1620, is discharged to the air mixing unit 1100 through the second outflow unit 1680, and is mixed with the dry and warm air discharged from the first outflow unit 1670.

As shown in fig. 3, the defogging device 1601 includes a first defogging sheet C, C 'and a second defogging sheet D, D' alternately stacked to form a first flow path 1601C and a second flow path 1601D, respectively. The left side of the bottom width of the first antifogging sheet C, C 'is deflected in the stacking direction to form a deflected portion, and the right side of the bottom width of the first antifogging sheet C, C' is deflected away from the stacking direction to form a deflected portion. The deflection direction of the deflection portion of the lower portion of the second defogging sheet D, D 'is opposite to the deflection direction of the deflection portion of the first defogging sheet C, C'. The first and second defogging sheets C and D form a second flow path 1610D therebetween. Similarly, a first flow path 1601C is formed between the second defogging sheet D and the first defogging sheet C'. Two side edges of the first fog dispersal sheet C, C' are bent towards the laminating direction to form folded edges to seal side edge gaps; two side edges of the second antifogging sheet D, D' are bent towards the laminating direction to form folded edges to block side edge gaps. A second flow path 1601D is formed between the first defogging sheet C and the second defogging sheet D, and a first flow path 1601C is formed between the second defogging sheet D and the first defogging sheet C'.

[ second embodiment ]

In order to uniformly distribute the airflow in the first and second flow paths 1601C, 1601D, an air guide structure is formed in the first and/or second flow paths 1601C, 1601D to guide the first and/or second airflow over substantially the full width of the defogging device.

Fig. 4 shows a layout of the wind guide structure. As shown in fig. 4, the air guide structure includes a first air guide convex edge portion and a second air guide convex edge portion, and the first air guide convex edge portion and the second air guide convex edge portion are intermittently arranged to form an air flow passage. The first air guide convex edge part in the first flow path 1601C has a certain blocking effect on the upward air flow, and channels the air flow to the right area of fig. 4; the included angle alpha of the first air guide convex edge part and the horizontal plane is larger than or equal to the included angle beta of the second air guide convex edge part and the horizontal plane, and the second air guide convex edge part continues to dredge the subsequent air flow until the air flow is evenly distributed in the first flow path 1601C. The air guide structure in the second flow path 1601D is opposite to the above structure in direction, the second air flow flows in from the bottom side on the right side in fig. 4, the first air guide convex edge portion in the second flow path 1601D has a certain blocking effect on the upward air flow, the second air flow is guided to the area on the left side in fig. 4, and the second air guide convex edge portion continues to guide the subsequent air flow until the second air flow is uniformly distributed in the second flow path 1601D.

Next, a wind guide structure in the first flow path 1601C formed by stacking the first defogging sheets C' and the second defogging sheets D will be described as an example.

As shown in fig. 5 and 6, a first linear rib 1630 protruding away from the stacking direction is formed on the surface of the first antifogging sheet C; a second strip-shaped rib 1640 protruding to one side in the stacking direction and corresponding to the first strip-shaped rib 1630 is formed on the surface of the second antifogging sheet D; the first air guiding rib is formed such that the top of the first rib 1630 is sealingly connected to the top of the second rib 1640. The first linear protruding rib 1630 protrudes outward from the paper when viewed from the front of the first antifogging sheet C ', and extends obliquely from the bottom edge of the first antifogging sheet C' to the upper right to form a strip; the second rib 1640 projects inward of the paper when viewed from the front of the second antifogging sheet D, and extends obliquely upward to the right from the bottom edge of the second antifogging sheet D in a strip shape. The first air guiding rib part conducts the first air flow flowing from the first inflow part 1610, namely the dry and cold air, to the right side of the fog dispersal device 1601, so that the direct upward influence of the air flow on the heat exchange efficiency is avoided, and the fog dispersal efficiency is further influenced. The lower end of the first air guide convex edge part approximately divides the full width of the fog dispersal device 1601 into 1: 3.

A third strip-shaped convex rib 1650 protruding towards one side opposite to the stacking direction is formed on the surface of the first fog dispersal sheet C'; a fourth rib 1660 corresponding to the third rib 1650 and protruding towards one side of the stacking direction is formed on the surface of the second antifogging sheet D; wherein, the top of the third rib 1650 is connected with the top of the fourth rib 1660 in a sealing manner. Viewed from the front of the first antifogging sheet C', the third strip-shaped protruding rib 1650 protrudes to the outside of the paper, and the right side of the first strip-shaped protruding rib 1630 extends obliquely and upwards to form a strip shape; the fourth strip-shaped protruding rib 1640 protrudes inward in the paper when viewed from the front of the second defogging sheet D, and is formed in a strip shape extending obliquely rightward and upward from the right side of the second strip-shaped protruding rib 1640. The second air guide rib part further dredges the right side of the fog dispersal device 1601 from the second air flow separated by the first air guide rib part, and the direct upward influence on the heat exchange efficiency of the air flow is avoided, so that the fog dispersal efficiency is influenced.

It should be noted that the first, second, third and fourth ribs 1630, 1640, 1650, 1660 may also extend in an arc.

The mist eliminator of this invention has been described in detail with reference to preferred embodiments thereof, however, it will be apparent to those skilled in the art that many changes, modifications and variations can be made therein without departing from the spirit of the utility model. The utility model includes the specific embodiments described above and any equivalents thereof.

Claims (9)

1. A fog dispersal device, comprising:

the first flow path and the second flow path are stacked and are used for carrying out heat exchange on the first airflow and the second airflow flowing from bottom to top;

the width of the fog dispersal device consists of two sections, and a first inflow part communicated with the first flow path is formed at one section of the width of the bottom of the fog dispersal device; a second inflow part communicated with the second flow channel is formed at the other section of the bottom width of the fog dispersal device; the first inflow portion and the second inflow portion each occupy half of the full width of the defogging device;

an air guide structure for guiding the first air flow and/or the second air flow to substantially the full width of the mist eliminator is formed in the first flow path and/or the second flow path.

2. Mist dissipating apparatus according to claim 1,

the fog dispersal device comprises a first fog dispersal sheet and a second fog dispersal sheet which limit the first flow path and the second flow path, wherein the first fog dispersal sheet and the second fog dispersal sheet are alternately stacked.

3. Mist dissipating apparatus according to claim 2,

the air guide structure comprises a first air guide convex edge part and a second air guide convex edge part, and the first air guide convex edge part and the second air guide convex edge part are discontinuously arranged to form an air flow channel.

4. Mist dissipating apparatus according to claim 3,

a first protruding strip-shaped convex rib is formed on the surface of the first fog dispersal sheet; a second protruding rib corresponding to the first protruding rib is formed on the surface of the second fog dispersal sheet; the first air guide rib is formed, and the ridge top of the first strip-shaped rib is connected with the ridge top of the second strip-shaped rib in a sealing mode.

5. Mist dissipating apparatus according to claim 3,

a third protruding strip-shaped convex rib is formed on the surface of the first fog dissipation sheet; a fourth protruding rib which protrudes and corresponds to the third protruding rib is formed on the surface of the second fog dispersal sheet; and the ridge top of the third strip-shaped convex rib is hermetically connected with the ridge top of the fourth strip-shaped convex rib.

6. Mist dissipating apparatus according to claim 4,

the first strip-shaped convex edge extends upwards from the bottom end of the first fog dispersal sheet in an inclined mode;

the second strip-shaped convex edge extends upwards from the bottom end of the second fog dissipation sheet in an inclined mode.

7. Mist dissipating apparatus according to claim 5,

the third strip-shaped convex rib extends upwards from the airflow channel in an inclined way;

the fourth rib extends obliquely upward from the air flow passage.

8. Mist dissipating apparatus according to claim 3,

and the included angle alpha between the first air guide convex edge part and the horizontal plane is greater than or equal to the included angle beta between the second air guide convex edge part and the horizontal plane.

9. A cooling tower comprising the mist elimination device of any one of claims 1-8.

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