CN215572279U - 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; a forward flow structure is formed within the first flow path and/or the second flow path to channel the first airflow and/or the second airflow to substantially the full width of the mist eliminator. 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; a forward flow structure is formed within the first flow path and/or the second flow path to channel the first airflow and/or the second airflow to substantially the full width of the mist eliminator.

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, the following current structure includes a plurality of first following current protruding arriss portions, and a plurality of first following current protruding arriss portions between be formed with first circulation passageway.

Further, an inlet for airflow to pass through is formed at the bottom end of the first flow channel, and the width of the inlets is gradually increased from one side edge of the fog dispersal device to the other side edge of the fog dispersal device.

Furthermore, a plurality of first convex ribs protruding towards one side or the other side of the stacking direction are formed on the surface of the first fog dispersal sheet; a plurality of second convex ribs which correspond to the first convex ribs one by one are formed on the surface of the second fog dissipation sheet; the first forward flow convex rib is formed in a manner that the ridge top of the first convex rib is hermetically connected with the corresponding ridge top of the second convex rib.

Furthermore, the following current structure includes a plurality of second following current protruding arriss portion, and a plurality of second following current protruding arriss portion is formed with the second circulation passageway between.

Furthermore, a plurality of third convex ribs protruding towards one side or the other side of the stacking direction are formed on the surface of the first fog dispersal sheet; fourth convex ridges corresponding to the third convex ridges one to one are formed on the surface of the second fog dispersal sheet; the second forward flow convex rib is formed in a manner that the ridge top of the third convex rib is hermetically connected with the corresponding ridge top of the fourth convex rib.

Further, the second flow channels are located above the first flow channels, and the inflow sides of the second flow channels and the outflow sides of the first flow channels are arranged in a staggered mode.

Further, an included angle α between the first forward flow convex rib portion and the horizontal plane is smaller than or equal to an included angle β between the second forward flow convex rib 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 forward flow structures are respectively arranged in the first flow path and the second flow path, so that the first airflow and the second airflow 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 a downstream structure according to a second embodiment of the present invention;

fig. 5 is a front view of the first defogging sheet in the present embodiment;

fig. 6 is a front view of a second defogging sheet in the present embodiment;

FIG. 7 is a schematic layout of a downstream structure according to a third embodiment of the present invention;

fig. 8 is a front view of the first defogging sheet in the present embodiment;

fig. 9 is a front view of the second defogging sheet according to 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 rib; 1640 second ribs; 1650 third bead; 1660 a fourth rib; 1670 a first outflow section; 1680 a second outflow section; 1690 at the entrance; an LC first flow-through channel; and a second flow channel for LD.

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; the width 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 flow path 1601C and the second flow path 1601D, a forward flow structure for channeling the first airflow and/or the second airflow to substantially the full width of the defogging device 1601 is formed in the first flow path 1601C and/or the second flow path 1601D.

Figure 4 shows a layout of a downstream structure. As shown in fig. 4, the downstream structure includes a plurality of first downstream convex edge portions, and a first flow channel LC is formed between the first downstream convex edge portions. The plurality of first downstream convex edge parts are positioned at the position of the fog dispersal device 1601 close to the middle height; the first forward flow convex edge portion in the first flow path 1601C plays a certain role in blocking the upward airflow, and channels the first airflow to the area on the right side in fig. 4 until the first airflow is uniformly distributed in the first flow path 1601C. The forward flow structure in the second flow path 1601D is opposite to the above structure in direction, the second airflow flows in from the bottom side on the right side in fig. 4, the first forward flow convex edge portion in the second flow path 1601D has a certain blocking effect on the upward airflow, and the second airflow is channeled to the area on the left side in fig. 4 until the second airflow is channeled to be uniformly distributed in the second flow path 1601D.

Next, a first forward flow convex edge portion in the first flow path 1601C formed by stacking the first antifogging sheet C' and the second antifogging sheet D will be described as an example.

As shown in fig. 5 and 6, a first rib 1630 protruding away from the stacking direction is formed on the surface of the first antifogging sheet C; a plurality of second ribs 1640 protruding to one side in the stacking direction and corresponding to the first ribs 1630 are formed on the surface of the second antifogging sheet D; the first forward flow rib is formed such that the apex of the first rib 1630 is sealingly engaged with the apex of the corresponding second rib 1640. The first rib 1630 protrudes outward from the paper when viewed from the front of the first antifogging sheet C', and extends obliquely upward to form a strip; the second rib 1640 projects inward of the paper when viewed from the front of the second defogging sheet D, and is formed in a stripe shape extending obliquely upward to the right. The first downstream rib portion dredges the first air flow flowing in from the first inflow portion 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.

When the air flow enters the first flow channels LC, because the air flow has the characteristic of "shortcut", the flow rate closer to the right side of the fog dispersal device 1601 is smaller, so that the air flow entering the first flow channels LC is uneven, and the heat exchange efficiency of the air flow is relatively affected.

In order to solve the above problem, as shown in fig. 4, in the defogging device 1601 of the present embodiment, an inlet 1690 for passing an air flow is formed at a bottom end of the first flow channel LC, and widths of the plurality of inlets 1690 gradually increase from one side of the defogging device 1601 to the other side of the defogging device 1601. The inlet 1690 near the left side of the fog dispersal device 1601 has a smaller width and a larger flow resistance; the inlet 1690 near the right side of the defogging device 1601 has a larger width and a smaller flow resistance, thereby making the airflow flowing in through the plurality of inlets 1690 into the plurality of first flow channels LC more uniform and further improving the heat exchange efficiency of the defogging device 1601.

[ third embodiment ]

This embodiment is an improvement of the second embodiment, and further increases the uniform distribution of the airflow in the flow path.

As shown in fig. 7, the downstream structure includes a plurality of second downstream convex edge portions, and a second flow channel LD is formed between the second downstream convex edge portions. The second flow channels LD are located above the first flow channels LC, and inflow sides of the second flow channels LD are disposed to be staggered from outflow sides of the first flow channels LC. The included angle alpha between the first forward flow convex rib part and the horizontal plane is smaller than or equal to the included angle beta between the second forward flow convex rib part and the horizontal plane. First air current in first flow path 1601C dredges the back through first following current bead portion, gets into second circulation passageway LD, and second circulation passageway LD continues to dredges first air current to upwards leading to flowing out from first outflow portion 1670, further shunts the air current that first circulation passageway LC flows out and dredges, has increased heat exchange efficiency. Similarly, the second air flow is guided upward by the second forward flow rib portion to flow out of the second flow outlet portion 1680 after flowing out of the first forward flow rib portion in the second flow path 1601D.

Next, a second forward flow convex edge portion in the first flow path 1601C formed by stacking the first defogging sheet C' and the second defogging sheet D will be described as an example.

As shown in fig. 8 and 9, a third rib 1650 protruding to the opposite side to the stacking direction is formed on the surface of the first antifogging sheet C'; a plurality of fourth convex ribs 1660 which protrude towards one side of the stacking direction and correspond to the third convex ribs 1650 one to one are formed on the surface of the second antifogging sheet D; wherein the second downstream rib is formed such that the apex of the third rib 1650 sealingly engages the apex of the corresponding fourth rib 1660. Viewed from the front of the first antifogging sheet C', the third protruding bead 1650 protrudes to the outside of the paper surface and extends upwards to form a strip shape; the fourth rib 1640 projects inward of the paper when viewed from the front of the second antifogging sheet D, and extends upward in a strip shape. The second air current that second following current fin portion will be dredged from first following current fin portion further dredges to outflow portion outflow to the top of fog dispersal device 1601, has further increased heat exchange efficiency, has improved fog dispersal efficiency.

It should be noted that the first tab 1630, the second tab 1640, the third tab 1650 and the fourth tab 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 (10)

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;

a forward flow structure is formed within the first flow path and/or the second flow path to channel the first airflow and/or the second airflow to substantially the full width of the mist eliminator.

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 downstream structure comprises a plurality of first downstream convex edge parts, and a first circulation channel is formed between the first downstream convex edge parts.

4. Mist dissipating apparatus according to claim 3,

the bottom end of the first flow channel is provided with an inlet for airflow to pass through, and the width of the inlets is gradually increased from one side edge of the fog dispersal device to the other side edge of the fog dispersal device.

5. Mist dissipating apparatus according to claim 3,

a plurality of first ribs protruding towards one side or the other side of the stacking direction are formed on the surface of the first fog dispersal sheet; a plurality of second convex ribs which correspond to the first convex ribs one by one are formed on the surface of the second fog dissipation sheet; the first forward flow convex rib is formed in a manner that the ridge top of the first convex rib is hermetically connected with the corresponding ridge top of the second convex rib.

6. Mist dissipating apparatus according to claim 3,

the downstream structure comprises a plurality of second downstream convex edge parts, and a second circulation channel is formed between the second downstream convex edge parts.

7. Mist dissipating apparatus according to claim 6,

a plurality of third ribs protruding towards one side or the other side of the stacking direction are formed on the surface of the first fog dispersal sheet; fourth convex ridges corresponding to the third convex ridges one to one are formed on the surface of the second fog dispersal sheet; the second forward flow convex rib is formed in a manner that the ridge top of the third convex rib is hermetically connected with the corresponding ridge top of the fourth convex rib.

8. Mist dissipating apparatus according to claim 6,

the second circulation channel is positioned above the first circulation channel, and the inflow side of the second circulation channel and the outflow side of the first circulation channel are arranged in a staggered mode.

9. Mist dissipating apparatus according to claim 6,

the included angle alpha between the first forward flow convex rib part and the horizontal plane is smaller than or equal to the included angle beta between the second forward flow convex rib part and the horizontal plane.

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

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