CN216048132U - Indirect-direct evaporative cooling device - Google Patents
Indirect-direct evaporative cooling device Download PDFInfo
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- CN216048132U CN216048132U CN202122660929.5U CN202122660929U CN216048132U CN 216048132 U CN216048132 U CN 216048132U CN 202122660929 U CN202122660929 U CN 202122660929U CN 216048132 U CN216048132 U CN 216048132U
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- heat exchange
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- indirect
- direct evaporative
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- 238000001816 cooling Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000005507 spraying Methods 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 12
- 241000270295 Serpentes Species 0.000 claims abstract description 4
- 239000000498 cooling water Substances 0.000 abstract description 13
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005399 mechanical ventilation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
An indirect-direct evaporative cooling device comprises a box body, wherein a water collecting tray, an air inlet space, a filler, a spraying system main path and a water receiving system are sequentially arranged in the box body from bottom to top; the top of the box body is provided with an induced draft fan; the air inlet space is embedded with an air pre-cooling module, the air pre-cooling module comprises heat exchange tubes which are distributed in a snake shape, the lower ends of the heat exchange tubes are branch water inlets, and the upper ends of the heat exchange tubes are branch water outlets; a water collecting tray is internally provided with a circulating water pump which is connected with the branch water inlet; and a spraying system branch is also arranged above the filler, and a branch water outlet is connected with the spraying system branch through a water feeding pipeline. The utility model adopts indirect-direct evaporative cooling heat exchange mode, and improves the heat exchange capability of air, reduces the temperature of outlet cooling water, improves the heat exchange efficiency and strengthens heat transfer through a special precooling structure.
Description
Technical Field
The utility model relates to the technical field of heat exchange, in particular to an indirect-direct evaporative cooling device.
Background
The open cooling tower has the advantages of simple structure, low cost, convenient maintenance and repair and the like, and is widely applied to the industrial fields of power station boilers, chemical industry, pharmacy, circulating water treatment, data centers and the like. However, the traditional open cooling tower has the problems of poor heat exchange effect, large equipment volume, large cold amplitude approximation degree and energy waste of a cooling circulating water pump, and the limit of the outlet water temperature can only reach the dry bulb temperature of the environment, so that a novel efficient cooling device is urgently needed to replace the traditional open cooling tower.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of poor heat exchange effect, large cooling approach degree and overhigh circulating water temperature at an outlet of a traditional open cooling tower, the utility model provides an indirect-direct evaporative cooling device.
The indirect-direct evaporative cooling device comprises a box body, wherein a water collecting tray, an air inlet space, a filler, a main spraying system path and a water collecting system are sequentially arranged in the box body from bottom to top; the top of the box body is provided with an induced draft fan;
the air inlet space is embedded with an air pre-cooling module, the air pre-cooling module comprises heat exchange tubes which are distributed in a snake shape, the lower ends of the heat exchange tubes are branch water inlets, and the upper ends of the heat exchange tubes are branch water outlets; a water collecting tray is internally provided with a circulating water pump which is connected with the branch water inlet; and a spraying system branch is also arranged above the filler, and a branch water outlet is connected with the spraying system branch through a water feeding pipeline.
Further, the heat exchange tube sleeve is provided with a plate-fin heat exchange structure.
Further, the indirect-direct evaporative cooling device is of a countercurrent square structure.
The utility model adopts indirect-direct evaporative cooling heat exchange mode, and improves the heat exchange capability of air, reduces the temperature of outlet cooling water, improves the heat exchange efficiency and strengthens heat transfer through a special precooling structure.
Compared with the prior art, the utility model has the beneficial effects that: the open type cooling tower solves the problems of poor heat exchange effect, large cooling approach degree and overhigh outlet temperature of the traditional open type cooling tower. The open type cooling tower can be refitted on the basis of the original open type cooling tower, the cost is saved, the structure is simple, and the operation and the maintenance are convenient.
Drawings
FIG. 1 is a schematic front view of the apparatus of the present invention;
FIG. 2 is a schematic left side view of the apparatus of the present invention;
in the drawings, the reference numerals designate, respectively: 1-a box body, 2-a water collecting tray, 3-an air inlet space, 4-an air pre-cooling module, 5-a heat exchange tube, 6-a filler, 7-a nozzle, 8-a main path of a spraying system, 9-a water collecting system, 10-an induced draft fan, 11-a main water inlet and 12-a main water drainage port; 13-a spraying system branch, 14-a water feeding pipeline, 15-a branch water outlet, 16-a branch water inlet, 17-a water inlet pipeline and 18-a circulating water pump.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to the attached drawings 1-2, the indirect-direct evaporative cooling device mainly comprises a box body 1, wherein a water collecting tray 2, an air inlet space 3, a filler 6, a spraying system main path 8 and a water receiving system 9 are sequentially arranged in the box body 1 from bottom to top; the top of the box body is provided with an induced draft fan 10. The main spraying system path 8 is connected with the main water inlet 11, and the downward nozzle 7 is arranged on the main spraying system path 8. The water collection tray 2 is connected to a main drain 12.
An air pre-cooling module 4 is embedded in the air inlet space 3, and the air pre-cooling module 4 comprises heat exchange tubes 5 which are arranged in a snake shape. The heat exchange tube 5 is sleeved with a plate-fin heat exchange structure to increase the heat exchange area. The lower end of the heat exchange tube 5 is provided with a branch water inlet 16, and the upper end is provided with a branch water outlet 15. A circulating water pump 18 is arranged in the water collecting tray 2, and the circulating water pump 18 is connected with a branch water inlet 16 through a water inlet pipeline 17. A spraying system branch 13 is also arranged above the filler 6, and a branch water outlet 15 is connected with the spraying system branch 13 through a water feeding pipeline 14.
The indirect-direct evaporative cooling device is preferably of a reverse flow square structure as a whole, is compact in structure, has opposite air flow and circulating water flow directions, and is high in heat exchange efficiency.
The following briefly describes a specific operation of an indirect-direct evaporative cooling apparatus of the present invention.
First, the circulating cooling water with a higher temperature is conveyed into the main sprinkler system branch 8 of the installation through the main water inlet 11. The water in the main spray system path 8 is sprayed out of the nozzles 7 under pressure. A part of the cooling water covers the lower filler 6 to form a water film, and the rest of the cooling water flows to the bottom water collecting tray 2 under the action of gravity and is discharged from the bottom main water discharge port 12.
Secondly, the internal circulating water pump 18 of the device is started, and part of the low-temperature outlet cooling water in the water collecting tray 2 is conveyed to the branch water inlet 16 in the air pre-cooling module 4 through the water inlet pipeline 17.
Then, the induced draft fan 10 is started to suck the air of the outdoor high-temperature environment into the equipment. The primary air with high outdoor temperature preferentially passes through the air pre-cooling module 4 arranged at the air inlet space 3 and is subjected to heat exchange (indirect heat exchange) with the cooling water with lower temperature in the heat exchange tube 5 in the pre-cooling module. The primary air outside the air pre-cooling module 4 is pre-cooled into low-temperature secondary air, and the cooling water with the increased temperature inside the heat exchange tube 5 is conveyed into the spraying system branch 13 from the branch water outlet 15 through the water feeding pipeline 14. A row of round holes are arranged below the spraying system branch 13, and cooling water is sprayed out from the open hole of the spraying system branch 13. Part of the cooling water covers the lower filler 6 to form a water film, and the other part of the cooling water returns to the water collecting plate 2.
Finally, the low-temperature secondary air and the water film on the filler 6 are directly connected to trigger heat and mass generation exchange (direct heat exchange). Part of the water films are evaporated to form high-temperature and high-humidity near saturated wet air, and the rest of the water films fall back to the bottom water collecting tray 2 under the action of gravity. The high-temperature and high-humidity air passes through the spraying system branch 13, the spraying system main path 8 and the upper water collecting system 9 under the action of strong negative pressure of the top induced draft fan 10 and is finally discharged out of the equipment.
On the basis of the mechanical ventilation open type cooling tower, the precooling module is additionally arranged at the air inlet to precool and cool primary air at the inlet to form secondary air, and the unsaturation of secondary air with strong negative pressure and low temperature in the tower is directly contacted with cooling water, so that higher cooling efficiency is obtained in a heat and mass transfer mode combining indirect-direct evaporative cooling, and the temperature of the cooling water at the outlet is reduced.
It should be noted that the above-described embodiments may enable those skilled in the art to more fully understand the present invention, but do not limit the present invention in any way. It will be apparent to those skilled in the art that modifications or improvements may be made to the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (3)
1. An indirect-direct evaporative cooling device is characterized by comprising a box body, wherein a water collecting tray, an air inlet space, a filler, a main spraying system path and a water collecting system are sequentially arranged in the box body from bottom to top; the top of the box body is provided with an induced draft fan;
the air inlet space is embedded with an air pre-cooling module, the air pre-cooling module comprises heat exchange tubes which are distributed in a snake shape, the lower ends of the heat exchange tubes are branch water inlets, and the upper ends of the heat exchange tubes are branch water outlets; a water collecting tray is internally provided with a circulating water pump which is connected with the branch water inlet; and a spraying system branch is also arranged above the filler, and a branch water outlet is connected with the spraying system branch through a water feeding pipeline.
2. The indirect-direct evaporative cooling device of claim 1, wherein: the heat exchange tube is sleeved with a plate-fin heat exchange structure.
3. The indirect-direct evaporative cooling device of claim 1, wherein: the indirect-direct evaporative cooling device is of a countercurrent square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122660929.5U CN216048132U (en) | 2021-11-02 | 2021-11-02 | Indirect-direct evaporative cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122660929.5U CN216048132U (en) | 2021-11-02 | 2021-11-02 | Indirect-direct evaporative cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216048132U true CN216048132U (en) | 2022-03-15 |
Family
ID=80551015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122660929.5U Active CN216048132U (en) | 2021-11-02 | 2021-11-02 | Indirect-direct evaporative cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216048132U (en) |
-
2021
- 2021-11-02 CN CN202122660929.5U patent/CN216048132U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.458, Gongye Road, Baoshan District, Shanghai 200444 Patentee after: Shanghai Baofeng Machinery Manufacturing Co.,Ltd. Country or region after: China Address before: No.458, Gongye Road, Baoshan District, Shanghai 200444 Patentee before: SHANGHAI BAOFENG MACHINERY MANUFACTURING Co.,Ltd. Country or region before: China |