CN209945063U - Low-energy-consumption countercurrent closed cooling tower - Google Patents
Low-energy-consumption countercurrent closed cooling tower Download PDFInfo
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- CN209945063U CN209945063U CN201920379924.5U CN201920379924U CN209945063U CN 209945063 U CN209945063 U CN 209945063U CN 201920379924 U CN201920379924 U CN 201920379924U CN 209945063 U CN209945063 U CN 209945063U
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Abstract
The utility model relates to a low energy consumption countercurrent closed cooling tower, which comprises a cooling tower shell and a fan arranged at the top of the cooling tower shell; the cooling tower is characterized in that a water-cooling heat exchange tube bundle is arranged in the cooling tower shell, water-spraying filler is arranged above the water-cooling heat exchange tube bundle, a spray head for spraying cooling water is arranged above the water-spraying filler, and a first air inlet window is arranged between the water-cooling heat exchange tube bundle and the water-spraying filler in the cooling tower shell. The utility model has the advantages that: adopt the trickle filler to carry out the forced air cooling to the cooling water, can show and reduce the power consumption, the water-cooling heat exchanger tube bank sets up in the lower part of cooling tower, has reduced the height of water-cooling heat exchanger tube bank, the maintenance operation of being convenient for, and the air cooling heat exchanger tube bank of the top of shower head is favorable to eliminating the white fog.
Description
Technical Field
The utility model belongs to cooling device especially relates to a low power consumption closed cooling tower against current.
Background
At present, a closed cooling tower can be divided into a counter-flow type (wind-water counter-flow), a forward-flow type (wind-water same-direction) and a cross-flow type (wind-water vertical crossing) according to the flowing direction of wind and water outside a pipe. Among them, the counter-flow type has many advantages, such as high cooling efficiency, small occupied area, convenient arrangement, and wide application. However, the wind resistance of the counter-flow cooling tower is large, and the energy consumption is large. In addition, the cooling tower can generate white fog under certain meteorological conditions, and the environment is adversely affected.
Disclosure of Invention
The utility model aims at providing a low energy consumption is technical scheme of closed cooling tower against current, improves the efficiency of counterflow cooling tower, reduces the energy consumption to avoid the production of white fog.
In order to realize the purpose, the technical scheme of the utility model is that: a low-energy-consumption reverse-flow closed cooling tower comprises a cooling tower shell and a fan arranged at the top of the cooling tower shell; the cooling tower is characterized in that a water-cooling heat exchange tube bundle is arranged in the cooling tower shell, water-spraying filler is arranged above the water-cooling heat exchange tube bundle, a spray head for spraying cooling water is arranged above the water-spraying filler, and a first air inlet window is arranged between the water-cooling heat exchange tube bundle and the water-spraying filler in the cooling tower shell.
Furthermore, in order to uniformly spray cooling water onto the water-cooling heat exchange tube bundle, a water distribution disc is arranged above the water-cooling heat exchange tube bundle, the water spraying filler is arranged above the water distribution disc, and the first air inlet window is arranged on the cooling tower shell between the water distribution disc and the water spraying filler.
Furthermore, in order to realize an integrated structure, a circulating water tank for collecting the cooling water is arranged at the bottom of the cooling tower shell, and the circulating water tank is connected with the spray header through a pipeline provided with a circulating water pump.
Further, in order to secure a normal water storage amount in the circulation water tank, the circulation water tank is provided with a ball float valve for replenishing water.
Furthermore, in order to obtain better heat exchange effect, the structure of the water-cooling heat exchange tube bundle comprises a coil type, a straight tube box type and a plate tube type.
Furthermore, in order to obtain a better cooling water cooling effect, the water spraying filler is a countercurrent open type water spraying filler, the structure of the water spraying filler comprises an S-wave water spraying filler, a double-oblique-wave water spraying filler and a trapezoidal-wave water spraying filler, and the water spraying filler is made of PVC (polyvinyl chloride).
Furthermore, the preferable structure of the water spraying filler is that the thickness of the water spraying filler is 1.0 m-1.5 m.
In order to further improve the heat exchange cooling effect of the cooling tower, an air cooling heat exchange tube bundle is arranged above the spray head, an output interface of the air cooling heat exchange tube bundle is connected with an input interface of the water cooling heat exchange tube bundle, and a second air inlet window is arranged on a cooling tower shell between the spray head and the air cooling heat exchange tube bundle.
Furthermore, the preferred air-cooled heat exchange tube bundle comprises a rolled finned tube heat exchange tube, a wound finned heat exchange tube, an aluminum alloy flat tube brazed finned heat exchange tube and an aluminum tube aluminum-penetrating finned heat exchange tube.
The utility model has the advantages that: adopt the trickle filler to carry out the forced air cooling to the cooling water, can show and reduce the power consumption, the water-cooling heat exchanger tube bank sets up in the lower part of cooling tower, has reduced the height of water-cooling heat exchanger tube bank, the maintenance operation of being convenient for, and the air cooling heat exchanger tube bank of the top of shower head is favorable to eliminating the white fog.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the present invention with an air-cooled heat exchange tube bundle.
Detailed Description
Referring to fig. 1, a low energy consumption countercurrent closed cooling tower comprises a cooling tower shell 10 and a fan 20 mounted on the top of the cooling tower shell; be equipped with water-cooling heat exchanger tube bundle 30 in the cooling tower casing, the top of water-cooling heat exchanger tube bundle is equipped with trickle filler 40, the top of trickle filler is equipped with the shower head 50 of blowout cooling water, water-cooling heat exchanger tube bundle with cooling tower casing between the trickle filler is equipped with first air inlet window 11.
And a water distribution disc 60 is arranged above the water-cooling heat exchange tube bundle, the water spraying filler is arranged above the water distribution disc, and the first air inlet window is arranged on a cooling tower shell between the water distribution disc and the water spraying filler.
And a circulating water tank 70 for collecting the cooling water is arranged at the bottom of the cooling tower shell and is connected with the spray header through a pipeline 72 provided with a circulating water pump 71.
The circulation water tank is provided with a ball float 73 for replenishing water.
The structure of the water-cooling heat exchange tube bundle comprises a coil pipe type, a straight tube box type and a plate tube type.
The water spraying filler is a countercurrent open type water spraying filler, the structure of the water spraying filler comprises an S-wave water spraying filler, a double-oblique-wave water spraying filler and a trapezoidal-wave water spraying filler, and the water spraying filler is made of PVC (polyvinyl chloride).
The thickness S of the water spraying filler is 1.0-1.5 m.
As shown in fig. 2, an air-cooling heat exchange tube bundle 80 is arranged above the spray header, an output interface 81 of the air-cooling heat exchange tube bundle is connected with an input interface 31 of the water-cooling heat exchange tube bundle, and a second air inlet window 12 is arranged on a cooling tower shell between the spray header and the air-cooling heat exchange tube bundle.
The air cooling heat exchange tube bundle comprises a rolled finned tube heat exchange tube, a wound finned heat exchange tube, an aluminum alloy flat tube brazed finned heat exchange tube and an aluminum tube-through aluminum finned heat exchange tube.
The first embodiment is as follows:
referring to fig. 1, a low energy consumption counterflow closed cooling tower includes a cooling tower housing 10 and a fan 20 mounted on top of the cooling tower housing.
The bottom of the cooling tower housing is provided with a circulation water tank 70 for collecting and storing cooling water, which is provided with a ball float valve 73 for replenishing water.
And a water-cooling heat exchange tube bundle 30 is arranged in the cooling tower shell and above the circulating water tank. The cooled medium 13 flows in the water-cooled heat exchange tube bundle. The water-cooled heat exchange tube bundle is provided with an input interface 31 and an output interface 32. The structure of the water-cooling heat exchange tube bundle can adopt a coil pipe type, a straight tube box type and a plate tube type. This embodiment uses a coiled tube version.
A water distribution plate 60 is arranged above the water-cooling heat exchange tube bundle. The water distribution plate is used for uniformly spraying the cooling water 14 falling from the upper part onto the water-cooling heat exchange tube bundle.
The upper part of the water distribution plate is provided with a water spraying filler 40, and the water spraying filler is a countercurrent open type S-wave water spraying filler made of PVC material. The trickle packs and needs to adopt appropriate thickness, and the thickness undersize of trickle packing can influence the heat exchange effect, and the thickness of trickle packing is too big can increase the resistance to the air, increases the energy consumption of fan. According to the experiment, the thickness S of the water spraying filler is controlled to be 1.0 m-1.5 m. The thickness S =1.2m of the water-sprinkling filler of the present embodiment.
A spray header 50 for spraying cooling water is arranged above the water spraying filler, a circulating water tank is provided with a circulating water pump 71, and the circulating water pump is connected with the spray header through a pipeline 72.
A first air inlet window 11 is arranged on the cooling tower shell between the water distribution disc and the water spraying filler. The first air inlet window adopts a shutter.
The working mode of the embodiment is as follows: the cooling water in the circulating water tank 70 is pressurized and fed to the shower head 50 by the circulating water pump 71, and the shower head sprays the cooling water on the water spray packing 40. Under the action of the fan 20, atmospheric air 15 enters the cooling tower shell 10 from the first air inlet window 11 and flows through the water spraying filler, cooling water exchanges heat with air in the water spraying filler, and the cooling water is cooled. The cooled cooling water falls onto the water distribution tray 60, which sprays the cooling water uniformly onto the water-cooled heat exchange tube bundle 30. The cooled medium flows through the water-cooling heat exchange tube bundle and exchanges heat with cooling water to realize cooling.
Compared with the conventional counter-flow closed cooling tower, in the embodiment, the cooling water and the cooled medium in the water-cooling heat exchange tube bundle are used for heat exchange, and the cooling water is evaporated into the air flowing through the filler in the water-spraying filler after being heated. Compared with the conventional countercurrent closed cooling tower which directly sprays spray water on the heat exchange tube to be evaporated into air flowing through the heat exchange tube, the countercurrent closed cooling tower has low wind resistance and high cooling efficiency.
When the conventional countercurrent closed cooling tower normally operates, spray water is in a constant temperature state, the temperature of the spray water is lower than that of a cooling outlet of the countercurrent closed cooling tower, and the air temperature of an outlet of a fan is close to that of the spray water.
In the embodiment, when the countercurrent closed cooling tower operates normally, the spray water is in a temperature changing state, and the air temperature at the outlet of the fan is close to the inlet temperature of the countercurrent closed cooling tower, so that the saturation of the outlet air is high, and the required air amount is small.
The air of the conventional counter-flow cooling tower flows through a plurality of rows of staggered heat exchange tubes (the number of the tube rows is usually more than 16), so that great resistance is generated.
Because the required air volume is small and the wind resistance is low, compared with the conventional counter-flow cooling tower, the low-energy-consumption counter-flow cooling tower can remarkably reduce energy consumption.
Example two:
referring to fig. 2, this embodiment is a modification of the first embodiment, which is a low energy consumption countercurrent closed cooling tower.
In this embodiment, an air-cooled heat exchange tube bundle 80 is disposed above the shower head 50. And a second air inlet window 12 is arranged on the cooling tower shell between the spray header and the air-cooled heat exchange tube bundle. The air cooling heat exchange tube bundle can adopt a rolled finned tube heat exchange tube, a wound finned heat exchange tube, an aluminum alloy flat tube brazed finned heat exchange tube and an aluminum tube-penetrating aluminum finned heat exchange tube, and the aluminum alloy flat tube brazed finned heat exchange tube is adopted in the embodiment.
The air-cooled heat exchanger bundle is provided with an output interface 81 and an input interface 82, and the output interface 81 of the air-cooled heat exchanger bundle is connected with the input interface 31 of the water-cooled heat exchanger bundle. The cooled medium flows in through the inlet 82 of the air-cooled heat exchanger bundle, flows through the air-cooled heat exchanger bundle and the water-cooled heat exchanger bundle, and flows out through the outlet 32 of the water-cooled heat exchanger bundle.
The air 16 entering from the second air inlet window produces pre-cooling effect on the cooled medium through the air cooling heat exchange tube bundle. The heat exchange and cooling effect of the low-energy-consumption counter-flow cooling tower can be improved, and the counter-flow cooling tower is particularly suitable for improving the efficiency of the cooling tower under the low-temperature environment condition and further reducing the energy consumption.
In addition, the air 15 entering from the first air inlet window passes through the water spraying filler 40 and is subjected to heat exchange with cooling water, the temperature is increased, and the air reaches or approaches a saturated state. White mist may be generated after being discharged from the cooling tower. And secondly, air 16 entering from the second air inlet window is heated by the air cooling heat exchange tube bundle and then is mixed with air 15 flowing through the water spraying filler, and the mixed air 17 is in an unsaturated state and is discharged by the fan, so that the occurrence of white fog can be avoided.
For example, a converter steelmaking system of a steel mill originally uses a conventional closed cooling tower, the circulating water amount is 450 cubic meters per hour, the water inlet temperature is 45 ℃, the water outlet temperature is 35 ℃, the size of the closed cooling tower is 9m multiplied by 3m multiplied by 4.5m (length multiplied by width multiplied by height), 3 fans are matched, the air volume of a single fan is 160000m 3/hour, the air pressure is 260pa, and the power is 18.5 kW. 1 spray water pump is matched, the flow rate is 230m3/h, the lift is 10m, the power is 11kW, the annual water consumption is 43362 cubic meters, and the annual power consumption is 388944 kW.h.
Adopt the utility model discloses reform transform the back: the circulating water amount is 450 cubic meters per hour, the water inlet temperature is 45 ℃, the water outlet temperature is 35 ℃, the size of the cooling tower is 9m multiplied by 3m multiplied by 6.5m (length multiplied by width multiplied by height), 3 fans are matched, the air volume of a single fan is 90000m3/h, the air pressure is 140pa, and the power is 7.5 kW. 2 spray water pumps are matched, the flow rate of each water pump is 180m3/h, the lift is 8m, the power is 5.5kW, the annual water consumption is 34251.6 cubic meters, and the annual power consumption is 137970 kW.h. After modification, compared with before modification, the electricity is saved: 250974 kW.h, water saving: 9110.4 cubic meters.
The operation cost is saved after the transformation compared with that before the transformation: 187026 yuan (electricity charge 0.6 yuan/degree, water charge 4 yuan/cubic meter). The improved equipment generates no white fog all the year round.
Claims (9)
1. A low-energy-consumption reverse-flow closed cooling tower comprises a cooling tower shell and a fan arranged at the top of the cooling tower shell; the cooling tower is characterized in that a water-cooling heat exchange tube bundle is arranged in the cooling tower shell, water-spraying filler is arranged above the water-cooling heat exchange tube bundle, a spray head for spraying cooling water is arranged above the water-spraying filler, and a first air inlet window is arranged on the cooling tower shell between the water-cooling heat exchange tube bundle and the water-spraying filler.
2. The low-energy-consumption countercurrent closed cooling tower according to claim 1, wherein a water distribution disc is arranged above the water-cooling heat exchange tube bundle, the water spraying filler is arranged above the water distribution disc, and the first air inlet window is arranged on a cooling tower shell between the water distribution disc and the water spraying filler.
3. The low energy consumption countercurrent closed cooling tower of claim 1, wherein the bottom of the cooling tower shell is provided with a circulating water tank for collecting the cooling water, and the circulating water tank is connected with the spray header through a pipeline provided with a circulating water pump.
4. The low energy consumption counter-current closed cooling tower of claim 3 wherein the circulating water tank is provided with a ball float valve for replenishing water.
5. The low energy consumption countercurrent closed cooling tower of claim 1, wherein the configuration of said water-cooled heat exchange tube bundle includes coil type, straight tube box type, plate-tube type.
6. The low energy consumption countercurrent closed cooling tower according to claim 1, wherein the water-spraying packing is countercurrent open water-spraying packing, the structure of the water-spraying packing comprises S-wave water-spraying packing, double-oblique-wave water-spraying packing and trapezoidal-wave water-spraying packing, and the water-spraying packing is PVC water-spraying packing.
7. The low energy consumption counter-current closed cooling tower according to claim 1, wherein the thickness of the water-spraying packing is 1.0 m-1.5 m.
8. The closed cooling tower of claim 1, wherein an air-cooled heat exchanger tube bundle is disposed above the shower head, an output port of the air-cooled heat exchanger tube bundle is connected to an input port of the water-cooled heat exchanger tube bundle, and a second air inlet window is disposed in a cooling tower housing between the shower head and the air-cooled heat exchanger tube bundle.
9. The low energy consumption countercurrent closed cooling tower of claim 8, wherein the air-cooled heat exchange tube bundle comprises rolled finned tube heat exchange tubes, wound finned heat exchange tubes, aluminum alloy flat tube brazed finned heat exchange tubes, and aluminum tube aluminum-through aluminum finned heat exchange tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920379924.5U CN209945063U (en) | 2019-03-25 | 2019-03-25 | Low-energy-consumption countercurrent closed cooling tower |
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| CN201920379924.5U CN209945063U (en) | 2019-03-25 | 2019-03-25 | Low-energy-consumption countercurrent closed cooling tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870042A (en) * | 2019-03-25 | 2019-06-11 | 北京凯德菲节能工程技术有限公司 | A kind of low power consuming adverse current closed type cooling column |
| CN113483506A (en) * | 2021-06-18 | 2021-10-08 | 浙江英特科技股份有限公司 | Evaporation type condenser |
-
2019
- 2019-03-25 CN CN201920379924.5U patent/CN209945063U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870042A (en) * | 2019-03-25 | 2019-06-11 | 北京凯德菲节能工程技术有限公司 | A kind of low power consuming adverse current closed type cooling column |
| CN113483506A (en) * | 2021-06-18 | 2021-10-08 | 浙江英特科技股份有限公司 | Evaporation type condenser |
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