CN215413265U - Water-saving fog-dispersing mechanical ventilation cooling tower - Google Patents
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- CN215413265U CN215413265U CN202121154441.9U CN202121154441U CN215413265U CN 215413265 U CN215413265 U CN 215413265U CN 202121154441 U CN202121154441 U CN 202121154441U CN 215413265 U CN215413265 U CN 215413265U
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Abstract
The utility model discloses a water-saving fog-eliminating mechanical ventilation cooling tower, which comprises a tower body, wherein a fan is arranged at the top of the tower body, a water collecting tank is arranged at the bottom of the tower body, a dividing wall type heat exchanger is arranged in the tower body, a spraying area, a filling area and a rain area are formed in a space below the dividing wall type heat exchanger in the tower body, the spraying area, the filling area and the rain area are separated into a dry cooling area and a wet heating area which are mutually independent by a partition plate, a water distribution pipe with a spray head is arranged in the spraying area, a dry cooling channel and a wet heating channel are arranged in the dividing wall type heat exchanger, two ends of the dry cooling channel are respectively communicated with the dry cooling area and an air outlet, two ends of the wet heating channel are respectively communicated with the wet heating area and the air outlet, a plurality of air inlets are arranged at positions corresponding to the rain area on the side wall of the tower body, one dry cooling area is correspondingly communicated with one of the air inlets, and one of the wet heating area is correspondingly communicated with one of the air inlets to ensure that the dry cooling water, Wind in the damp and hot area does not interfere with each other, so that the heat exchange efficiency of the heat exchanger is improved, and the water-saving and fog-dispersing effects are improved.
Description
Technical Field
The utility model relates to the technical field of cooling towers, in particular to a water-saving fog-dispersing mechanical ventilation cooling tower.
Background
Cooling towers can be divided into mechanical draft cooling towers and natural draft cooling towers according to the draft mode in the towers. Most of thermal power plants usually adopt a mechanical ventilation cooling tower, and when the mechanical ventilation cooling tower works, circulating water is sprayed onto filler through a spray head of a water distribution pipe, and the circulating water and rising air are subjected to heat exchange cooling and then fall into a water collecting tank. Air in the tower enters from the air inlet, is changed into saturated hot and humid air after being evaporated, contacted and transferred with hot water in the tower, and is discharged to the ambient atmosphere through the water collector, the fan and the tower drum outlet, and the hot and humid air is in a supersaturated state after being discharged out of the tower and can be condensed into water, so that white fog is generated to influence the surrounding environment, and a large amount of water resources are wasted.
In order to solve the problems, cooling towers capable of saving water and dispersing fog gradually appear in the market. The patent with publication number CN205102634U discloses a water-saving and fog-dispersing cooling tower, which forms two separate air streams of damp heat and dry cold in the tower to reduce the water vapor content of the discharged air stream and reduce the evaporation loss of water, thereby achieving the effects of water saving and fog dispersing. However, since the partition plates are equidistant, the density of the sprayed water is too high during fog dissipation, thereby limiting the application range of the fog dissipation device. And when air outside the tower enters the air inlet gap area through the air inlet, part of dry and cold air can directly exchange heat with falling circulating water, so that the temperature of the dry and cold air entering the dry and cold area is increased, the heat exchange efficiency in the heat exchanger is further influenced, and the water-saving and fog-removing efficiency is finally influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, a water-saving fog-eliminating mechanical ventilating cooling tower capable of improving the heat exchange efficiency of the dividing wall type heat exchanger is needed.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a water-saving fog-eliminating mechanical ventilation cooling tower comprises a tower body, wherein a fan is arranged at an air outlet at the top of the tower body, a water collecting tank is arranged at the bottom of the tower body, a dividing wall type heat exchanger is arranged in the tower body, a spraying area, a filling area and a rain area are sequentially formed in the space below the dividing wall type heat exchanger from top to bottom, the spraying area, the filling area and the rain area are separated into a dry cooling area and a wet heating area which are mutually independent by a partition plate, a water distribution pipe with a spray head is arranged in the spraying area, a filling material is arranged in the filling area, a dry cooling channel and a wet heating channel which are mutually independent are arranged in the dividing wall type heat exchanger, two ends of the dry cooling channel are respectively communicated with the dry cooling area and the air outlet, two ends of the wet heating channel are respectively communicated with the wet heating area and the air outlet, a plurality of air inlets are arranged on the side wall of the tower body corresponding to the rain area, and one dry and cold area is correspondingly communicated with one of the air inlets, and one wet and hot area is correspondingly communicated with one of the air inlets.
Further, do cold district with wet hot district is located the part in the rain district all is rectangular cavity structure, and the length direction of this rectangular cavity structure is followed the air inlet direction of air intake extends.
Further, the top two thirds of the area in the rain zone is separated by the partition plate.
Furthermore, the width ratio of the dry cooling area to the wet heating area is i, and i is more than or equal to 0.5 and less than or equal to 1.5.
Furthermore, water distribution cavities are formed in two opposite side walls of the tower body, a water inlet pipe is connected to each water distribution cavity, a control valve is installed on each water inlet pipe, each water distribution cavity is communicated with a plurality of water distribution pipes, one of the water distribution pipes in each water distribution cavity is staggered with the other water distribution pipe in each water distribution cavity, one water distribution pipe in each water distribution cavity is correspondingly arranged above the dry cooling area, and the other water distribution pipe in each water distribution cavity is correspondingly arranged above the wet heating area.
Furthermore, two water distribution pipes are correspondingly arranged in one dry cooling area, and two water distribution pipes are correspondingly arranged in one wet heating area.
Furthermore, the water distribution cavity is formed by an inner cavity of a water distribution main pipe arranged on the side wall of the tower body, or is formed by an inner cavity of a water distribution box arranged on the side wall of the tower body.
Furthermore, the dividing wall type heat exchanger is horizontally and fixedly installed on the inner wall of the tower body, the dividing wall type heat exchanger comprises a plurality of heat exchange units which are connected in sequence, the dry and cold channel and the wet and hot channel are arranged on each heat exchange unit, and the isolation plate is connected to the bottom of each heat exchange unit.
Furthermore, the air inlet of the dry cooling channel is positioned below the air outlet of the dry cooling channel, the air inlet of the damp heating channel is positioned below the air outlet of the damp heating channel, and the air inlet of the dry cooling channel and the air inlet of the damp heating channel are respectively positioned on two opposite sides of the isolation plate.
The utility model has the beneficial effects that: according to the water-saving fog dispersal mechanical ventilation cooling tower provided by the utility model, the partition plate extends to the rain regions, and each rain region is correspondingly communicated with one air inlet, so that the condition that external cold air is contacted with falling water drops before entering the dry cooling region to generate heat exchange is avoided, the heat exchange efficiency of the dividing wall type heat exchanger is improved, and the water-saving fog dispersal effect is ensured.
Drawings
The utility model is further illustrated by the following figures and examples.
FIG. 1 is a schematic structural view of a water-saving fog-dispersing mechanical ventilating cooling tower of the utility model (the dry cooling area and the wet cooling area are equal in width);
FIG. 2 is another schematic structural view of the tower body in the water-saving fog-dispersing mechanical ventilating and cooling tower shown in FIG. 1 (the dry cooling area and the wet cooling area are not equal in width);
FIG. 3 is a schematic view of the connection structure among the water distribution pipe, the water distribution cavity and the water inlet pipe in the water-saving fog-dispersing mechanical ventilating and cooling tower shown in FIG. 1;
fig. 4 is another schematic structural diagram of the water-saving fog-dispersing mechanical ventilating cooling tower of the utility model.
In the figure: 1. the system comprises a tower body, 11, a spraying area, 12, a packing area, 13, a rain area, 111, a dry cooling area, 112, a wet heating area, 121, packing, 14, an air inlet, 15, an air outlet, 2, a dividing wall type heat exchanger, 21, a dry cooling channel, 22, a wet heating channel, 23, a heat exchange unit, 3, a fan, 4, a water collecting tank, 5, a partition plate, 6, a water distribution pipe, 61, a spray head, 7, a water distribution cavity, 8, a water inlet pipe, 81, a control valve, 9 and a water collector.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.
Referring to fig. 1, the utility model discloses a water-saving fog-eliminating mechanical ventilation cooling tower, comprising a tower body 1, a fan 3 is arranged at an air outlet 15 at the top of the tower body 1, a water collecting tank 4 is arranged at the bottom of the tower body 1, a dividing wall type heat exchanger 2 is arranged in the tower body 1, a spraying area 11, a filling area 12 and a rain area 13 are sequentially formed in the tower body 1 from top to bottom in the space below the dividing wall type heat exchanger 2, the spraying area 11, the filling area 12 and the rain area 13 are divided into a dry cooling area 111 and a wet heating area 112 which are mutually independent by a partition plate 5, a water distribution pipe 6 with a spray head 61 is arranged in the spraying area 11, a filling material 121 is arranged in the filling area 12, a dry cooling channel 21 and a wet heating channel 22 which are mutually independent are arranged in the dividing wall type heat exchanger 2, two ends of the dry cooling channel 21 are respectively communicated with the dry cooling area 111 and the air outlet 15, two ends of the wet heating channel 22 are respectively communicated with the wet heating area 112 and the air outlet 15, a plurality of air inlets 14 are formed in the side wall of the tower body 1 at positions corresponding to the rain areas 13, one dry cooling area 111 is correspondingly communicated with one of the air inlets 14, and one wet heating area 112 is correspondingly communicated with one of the air inlets 14.
For clarity of the arrangement positions of the dry cooling channel 21 and the wet heating channel 22, the dotted line in the dividing wall type heat exchanger 2 represents the dry cooling channel 21, and the solid line represents the wet heating channel 22.
When the spray head is used, a user can control the flow of the water distribution pipe 6 according to the needs, for example, the spray head 61 of the water distribution pipe 6 above the wet and hot area 112 can be independently controlled to be opened, and then the wet and hot area 112 is independently sprayed; the spray heads 61 of the water distribution pipes 6 above the wet and hot area 112 and the dry and cold area 111 can be controlled to be opened simultaneously, so that the wet and hot area 112 and the dry and cold area 111 are sprayed simultaneously, the operation without fog dissipation in summer is realized, the operation water temperature is reduced, and the cooling effect is improved.
When the cooling tower operates in cold weather, white fog is easy to appear at the air outlet 15 at the top of the tower body 1, and at the moment, fog dissipation treatment is needed. Specifically, the spray nozzles 61 above the wet and hot area 112 are independently controlled to be opened to distribute water to the wet and hot area 112, the circulating water forms water drops under the action of the spray nozzles 61 and falls onto the packing 121 in the wet and hot area 112, and the external dry and cold air flowing into the interior of the tower body 1 through the air inlets 14 simultaneously enters the wet and hot area 112 and the dry and cold area 111. The dry and cold air entering the damp-heat area 112 is heated and humidified after exchanging heat with the filler 121 to become saturated damp-heat air, and the saturated damp-heat air enters the damp-heat channel 22; meanwhile, the dry and cold air entering the dry and cold area 111 enters the dry and cold channel 21 after passing through the filler 121 which is not sprayed, the dry and cold air in the dry and cold channel 21 exchanges heat with the saturated humid and hot air in the adjacent humid and hot channel 22, so that the temperature of the saturated humid and hot air is reduced, condensed water is generated in the humid and hot channel 22, the condensed water falls back along the humid and hot channel 22 and passes through the filler 121 downwards, the purpose of saving water is achieved, and the air passing through the humid and hot channel 22 is changed into warm and humid air. The temperature of the dry and cold air in the dry and cold channel 21 rises due to heat exchange, warm air is formed after passing through the dry and cold channel 21, and the warm air and the formed warm and humid air are mixed at the air outlet 15 to form unsaturated air, so that the aim of fog dissipation is fulfilled.
When the cooling tower operates in warm weather, white fog is not easy to appear at the air outlet 15, and at the moment, fog dissipation treatment is not needed, water can be simultaneously distributed to the wet heat area 112 and the dry cold area 111, so that the maximization of the spraying area is realized, and the cooling of circulating water is accelerated. Therefore, the user can flexibly adjust the running state of the cooling tower according to seasons.
According to the water-saving fog-dispersing mechanical ventilation cooling tower disclosed by the utility model, when the cooling tower is adjusted to a fog-dispersing running state, under the action of the fan 3, external air in the dry cooling area 111 enters through the air inlet 14 correspondingly communicated with the dry cooling area 111, and external air in the wet heating area 112 enters through the air inlet 14 correspondingly communicated with the wet heating area 112, so that the external air entering the dry cooling area 111 in the rain-showering area 13 and the external air entering the wet heating area 112 are separated by the partition plate 5, two air flows do not contact with each other when entering the tower, the air entering the dry cooling area 111 is prevented from contacting with water drops falling through the wet heating area 112, and the heat exchange efficiency of the dividing wall type heat exchanger 2 is further ensured.
In this embodiment, the dry-cold area 111 and the wet-hot area 112 are located in the rain area 13 and each have a long-strip cavity structure, and the length direction of the long-strip cavity structure extends along the air inlet direction of the air inlet 14.
Further, in order to ensure that the outside air entering into the dry and cold zone 111 and the wet and hot zone 112 is effectively isolated, the top two thirds of the area in the rain zone 13 is isolated by the isolation plate 5.
In addition, in consideration of the flow rate of the circulating water in the water distribution area, the widths of the dry cooling area 111 and the wet heating area 112 may be set to be the same (see fig. 1) or different (see fig. 2). Generally, the width ratio of the dry cooling area 111 to the wet heating area 112 is i, i is more than or equal to 0.5 and less than or equal to 1.5.
Referring to fig. 1, 3 and 4, in the present embodiment, two opposite side walls of the tower body 1 are respectively provided with a water distribution cavity 7, each water distribution cavity 7 is connected with a water inlet pipe 8, each water inlet pipe 8 is provided with a control valve 81, each water distribution cavity 7 is communicated with a plurality of water distribution pipes 6, the water distribution pipe 6 on one water distribution cavity 7 is staggered with the water distribution pipe 6 on the other water distribution cavity 7, the water distribution pipe 6 on one water distribution cavity 7 is correspondingly arranged above the dry cooling area 111, and the water distribution pipe 6 on the other water distribution cavity 7 is correspondingly arranged above the wet heating area 112. So, through setting up the water distribution condition of a plurality of distribution pipes 6 of a control valve 81 alright simultaneous control dry cooling district 111 top, equally, also can control the water distribution condition of a plurality of distribution pipes 6 of damp heat district 112 top simultaneously through setting up a control valve 81, simple structure, and conveniently control the water distribution.
The water distribution pipe 6 is disposed in a longitudinal direction along the dry cooling zone 111 and the wet heating zone 112. In a specific embodiment, two water distribution pipes 6 are correspondingly arranged in one dry cooling area 111, and two water distribution pipes 6 are correspondingly arranged in one wet heating area 112. It should be noted that, when the widths of the dry cooling area 111 and the wet heating area 112 are the same, the number of the water distribution pipes 6 in the dry cooling area 111 and the wet heating area 112 is the same, and when the widths of the dry cooling area 111 and the wet heating area 112 are different, the number of the water distribution pipes 6 correspondingly arranged in the dry cooling area 111 and the wet heating area 112 can be correspondingly adjusted as required, so that the design widths of the dry cooling area and the wet cooling area are adapted to the number of the water distribution pipes 6.
In addition, the water distribution chamber 7 may be formed by an inner chamber of a water distribution main pipe installed on a side wall of the tower body 1 (see fig. 1 and 3), or by an inner chamber of a water distribution tank installed on a side wall of the tower body 1 (see fig. 4), which is not limited herein.
It can be understood that, in other embodiments, one water distribution pipe 6 connected to the water distribution cavity 7 may also span the dry cooling area 111 and the wet heating area 112 simultaneously, that is, part of the upper portion of the same water distribution pipe 6 is located above the dry cooling area 111, and part of the upper portion of the same water distribution pipe 6 is located above the wet heating area 112, at this time, part of the spray heads 61 on the same water distribution pipe 6 correspond to the dry cooling area 111, and part of the spray heads 61 correspond to the wet heating area 112, and a control valve may be installed on each spray head 61, and the water distribution function in different areas is realized by independently controlling the opening and closing of the control valve.
Referring to fig. 1 again, in the present embodiment, the dividing wall type heat exchanger 2 is horizontally and fixedly installed on the inner wall of the tower body 1, the dividing wall type heat exchanger 2 includes a plurality of heat exchanging units 23 connected in sequence, the dry cooling channel 21 and the wet heating channel 22 are disposed on each heat exchanging unit 23, and the dry cooling channel 21 and the wet heating channel 22 on each heat exchanging unit 23 are disposed in a staggered manner and are close to each other.
Furthermore, each heat exchange unit 23 extends along a direction perpendicular to the paper surface to form a column-shaped structure, the cross section of each heat exchange unit 23 is in a diamond-shaped structure, the dry-cold channel 21 obliquely penetrates through two opposite side walls of the heat exchange unit 23, and the wet-heat channel 22 obliquely penetrates through the other two opposite side walls of the heat exchange unit 23.
Because the dry and cold passageway 21 and the wet and hot passageway 22 are independent each other and do not communicate for the dry and cold air in the dry and cold passageway 21 can not contact with the water droplet in the wet and hot air in the wet and hot passageway 22, has ensured that dry and cold air humidity can not increase, and simultaneously, dry and cold passageway 21 and wet and hot passageway 22 are close to each other, have improved the heat exchange efficiency of air in the two tunnel passageways, and then have promoted the condensation effect.
In addition, the extension direction of dry and cold passageway 21 and damp and hot passageway 22 along heat exchange unit 23 on the heat exchange unit 23 all is provided with a plurality ofly, and a plurality of dry and cold passageways 21 equidistant settings, a plurality of damp and hot passageways 22 equidistant settings, and dry and cold passageway 21 and damp and hot passageway 22 crisscross setting, through setting up a plurality of dry and cold passageways 21 and a plurality of damp and hot passageway 22, increased heat transfer area to the heat transfer effect has been improved.
In addition, the dividing wall type heat exchanger 2 is made of PVC materials, so that the light weight of the dividing wall type heat exchanger 2 is realized, and the production and the installation are convenient.
The air inlet of the dry-cold channel 21 is positioned below the air outlet of the dry-cold channel 21, the air inlet of the wet-heat channel 22 is positioned below the air outlet of the wet-heat channel 22, the isolation plate 5 is connected to the bottom of each heat exchange unit 23, and the air inlet of the dry-cold channel 21 and the air inlet of the wet-heat channel 22 are respectively positioned on two opposite sides of the isolation plate 5.
In one embodiment, a water collector 9 is installed between the water distribution pipe 6 and the dividing wall type heat exchanger 2 to catch fine water droplets carried along with the air flow.
According to the water-saving fog-dispersing mechanical ventilation cooling tower provided by the utility model, the partition plate 5 extends to the rain areas 13, and each rain area 13 is correspondingly communicated with one air inlet 14, so that the condition that external cold air is contacted with falling water drops before entering the dry cooling area 111 to generate heat exchange is avoided, the heat exchange efficiency of the dividing wall type heat exchanger 2 is improved, and the water-saving fog-dispersing effect is ensured.
In light of the foregoing description of preferred embodiments in accordance with the utility model, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a water conservation fog dispersal machinery ventilation cooling tower which characterized in that: the device comprises a tower body, wherein a fan is arranged at an air outlet at the top of the tower body, a water collecting tank is arranged at the bottom of the tower body, a dividing wall type heat exchanger is arranged in the tower body, a spraying area, a filling area and a rain area are sequentially formed in the space below the dividing wall type heat exchanger from top to bottom in the tower body, the spraying area, the filling area and the rain area are separated into a dry cooling area and a wet heating area which are mutually independent by a partition plate, a water distribution pipe with a spray head is arranged in the spraying area, filling material is arranged in the filling area, a dry cooling channel and a wet heating channel which are mutually independent are arranged in the dividing wall type heat exchanger, two ends of the dry cooling channel are respectively communicated with the dry cooling area and the air outlet, two ends of the wet heating channel are respectively communicated with the wet heating area and the air outlet, and a plurality of air inlets are arranged on the side wall of the tower body corresponding to the rain area, and one dry and cold area is correspondingly communicated with one of the air inlets, and one wet and hot area is correspondingly communicated with one of the air inlets.
2. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 1, characterized in that: do cold district with wet hot district is located part in the rain district all is rectangular cavity structure, and the length direction of this rectangular cavity structure is followed the air inlet direction of air intake extends.
3. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 2, characterized in that: the top two thirds of the area in the rain zone is separated by the partition plate.
4. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 2, characterized in that: the width ratio of the dry cooling area to the wet heating area is i, and i is more than or equal to 0.5 and less than or equal to 1.5.
5. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 1, characterized in that: the tower body is characterized in that two opposite side walls of the tower body are respectively provided with a water distribution cavity, each water distribution cavity is connected with a water inlet pipe, each water inlet pipe is provided with a control valve, each water distribution cavity is communicated with a plurality of water distribution pipes, one of the water distribution pipes in the water distribution cavity is staggered with the other water distribution pipe in the water distribution cavity, one water distribution pipe in the water distribution cavity is correspondingly arranged above the dry cooling area, and the other water distribution pipe in the water distribution cavity is correspondingly arranged above the wet heating area.
6. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 5, wherein: two water distribution pipes are correspondingly arranged in one dry cooling area, and two water distribution pipes are correspondingly arranged in one wet heating area.
7. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 5, wherein: the water distribution cavity is formed by an inner cavity of a water distribution main pipe arranged on the side wall of the tower body, or is formed by an inner cavity of a water distribution box arranged on the side wall of the tower body.
8. The water-saving fog-dispersing mechanical ventilating cooling tower of claim 1, characterized in that: the dividing wall type heat exchanger is horizontally and fixedly installed on the inner wall of the tower body and comprises a plurality of heat exchange units which are connected in sequence, the dry-cold channel and the wet-heat channel are arranged on each heat exchange unit, and the partition plate is connected to the bottom of each heat exchange unit.
9. The water-saving fog-dispersing mechanical ventilation cooling tower of claim 8, wherein: the air inlet of the dry cooling channel is positioned below the air outlet of the dry cooling channel, the air inlet of the wet heating channel is positioned below the air outlet of the wet heating channel, and the air inlet of the dry cooling channel and the air inlet of the wet heating channel are respectively positioned on two opposite sides of the isolation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154441.9U CN215413265U (en) | 2021-05-26 | 2021-05-26 | Water-saving fog-dispersing mechanical ventilation cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121154441.9U CN215413265U (en) | 2021-05-26 | 2021-05-26 | Water-saving fog-dispersing mechanical ventilation cooling tower |
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| Publication Number | Publication Date |
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| CN215413265U true CN215413265U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121154441.9U Active CN215413265U (en) | 2021-05-26 | 2021-05-26 | Water-saving fog-dispersing mechanical ventilation cooling tower |
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| CN (1) | CN215413265U (en) |
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2021
- 2021-05-26 CN CN202121154441.9U patent/CN215413265U/en active Active
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