CN210952491U - Device for improving influence of environment crosswind on heat transfer and mass transfer performance of cooling tower - Google Patents
Device for improving influence of environment crosswind on heat transfer and mass transfer performance of cooling tower Download PDFInfo
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- CN210952491U CN210952491U CN201921171257.8U CN201921171257U CN210952491U CN 210952491 U CN210952491 U CN 210952491U CN 201921171257 U CN201921171257 U CN 201921171257U CN 210952491 U CN210952491 U CN 210952491U
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- cooling tower
- air
- air guide
- mass transfer
- transfer performance
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- 238000001816 cooling Methods 0.000 title claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 5
- 230000001808 coupling effect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model discloses an improve device of environment crosswind to cooling tower heat transfer mass transfer performance influence, a plurality of aviation baffles have evenly been arranged to cooling tower air intake department circumference, and a plurality of guide ducts have evenly been arranged in the cooling tower rain district, the guide duct is extended to cooling tower central zone by cooling tower air intake outer fringe, with the shaft intercommunication. The utility model discloses a setting up of guide duct has reduced the air resistance, has reduced central zone air current temperature and humidity level, and the air intake aerodynamic field has been improved in setting up of aviation baffle, can make cooling tower windward side advance tower air as far as possible in the tower along radial inflow in the horizontal direction, has reduced cooling tower air intake side rear air and has flowed out the region, has increased the vertical air volume of cooling tower, under the two coupling effect, has improved the heat transfer mass transfer performance of cooling tower.
Description
Technical Field
The utility model relates to an improve device of environment crosswind to cooling tower heat transfer mass transfer performance influence belongs to the cooling tower and energy-conservation and carries and imitate technical field.
Background
The cooling tower is one of the important cold end equipment of the thermal power plant, and the influence of the quality of the operation condition on the economy of the unit is great. At present, a cooling tower mainly adopted is a natural ventilation counter-flow wet cooling tower, an air inlet is formed in the bottom of the tower, surrounding air enters the tower from the air inlet below, passes through a rain area, a packing area moves upwards, and exchanges heat with high-temperature circulating water sprayed by a water distribution system in the upward movement process, the high-temperature circulating water is sprayed to the packing area through a water spraying system, then enters the rain area through the packing area and finally flows into a water collecting tank, and due to the existence of a rain curtain, the air is difficult to enter the central area of the cooling tower, so that the temperature of the central area of the cooling tower is very high, and the heat and mass transfer performance of the cooling tower is reduced.
Under the condition of ambient crosswind, the air flow near the air inlet of the cooling tower is not only driven by the draft force to flow into the tower, but also influenced by the horizontal inertia force of the crosswind, so that the air flow field of the air inlet is not circumferentially and uniformly distributed any more. The cross wind in the environment with high wind speed even causes cross wind at the lateral rear part of the air inlet, directly reduces the air flow into the tower, and reduces the air-water ratio of the cooling tower. The environment crosswind induces larger longitudinal vortex in the tower, increases the ventilation resistance, reduces the air flow velocity in a vortex region, and weakens the heat and mass transfer strength between the gas and the water in the sub-region in the tower. Under the condition of side wind, the transverse ventilation volume of the cooling tower is formed, so that part of air in the sub-tower is discharged from the air inlet at the rear side of the cooling tower after heat and mass transfer only through the rain area, and the longitudinal ventilation volume acting on each heat and mass transfer area in the tower is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides an improve device that environment crosswind passed heat mass transfer ability to influence to cooling tower can reduce the cooling tower central zone's temperature, reduces the vertical swirl that environment crosswind arouses, increases vertical air volume, improves the heat mass transfer ability of cooling tower.
The utility model discloses the technical scheme who mainly adopts among does:
the utility model provides an improve device that environment crosswind passed heat and mass transfer performance influence to cooling tower, a plurality of aviation baffles have evenly been arranged to cooling tower air intake circumference, and a plurality of guide ducts have evenly been arranged to cooling tower rain district, the guide duct extends to cooling tower central zone by cooling tower air intake outer fringe, with the shaft intercommunication.
Preferably, the air deflector is rectangular sheet-shaped.
Preferably, the air guide pipe is of an arch structure.
Preferably, the air deflectors are arranged along the circumferential direction of the air inlet of the cooling tower, the air deflectors are fixed on the ground and the outer wall of the cooling tower, and the number of the air deflectors is 36.
Preferably, the air inlet of the air guide pipe is flush with the air inlet of the cooling tower, the air outlet of the air guide pipe extends into the vertical shaft and is communicated with the vertical shaft, and the number of the air guide pipes is 4.
Preferably, 4 air guide pipes are arranged in the cooling tower in a circumferential array mode, and an included angle theta between one air guide pipe and the annual average wind directioncwIs 0 deg..
Preferably, the air guide pipe is divided into 3 sections, wherein the porosity of one section in the central area of the cooling tower is 0.714, and the porosity of the other two sections is 0.323.
Preferably, the vertical shaft is cylindrical, the vertical shaft is communicated with the air outlets of the air guide pipes, the bottom surface of the vertical shaft is higher than the water collecting pool by a distance and used for preventing water in the water collecting pool from entering the vertical shaft, and the vertical shaft is located in the center of the inside of the cooling tower and is located in the center of the four air guide pipes.
Has the advantages that: the utility model provides an improve device that environment crosswind passed heat and mass transfer ability influence to cooling tower, setting up of guide duct has reduced the air inlet resistance, central zone air current temperature and humidity level have been reduced, the air intake aerodynamic field has been improved in setting up of aviation baffle, can make cooling tower windward side advance tower air in the tower along radial inflow tower on the horizontal direction as far as possible, it is regional to have reduced cooling tower air intake side rear air and flowed out, the vertical ventilation volume of cooling tower has been increased, under the two coupling effect, the heat mass transfer performance of cooling tower has been improved.
Drawings
FIG. 1 is a schematic view of a wind control scheme of an air deflector;
FIG. 2 is a schematic view of an installation position of an air duct;
FIG. 3 is a schematic view of a wind guide pipe;
FIG. 4 is a schematic view showing the effect of the device of the present invention on cooling tower temperature drop under crosswind conditions;
in the figure: the air guide plate comprises an air guide plate 1, an air guide pipe 2, a vertical shaft 3 and a porous structure 4.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in figures 1-3, the device for improving the influence of ambient side wind on the heat transfer and mass transfer performance of the cooling tower comprises a plurality of air deflectors 1 uniformly arranged on the circumference of an air inlet of the cooling tower, a plurality of air guide pipes 2 uniformly arranged in a rain area of the cooling tower, and the air guide pipes 2 extending from the outer edge of the air inlet of the cooling tower to the central area of the cooling tower and communicated with a vertical shaft 3. (in the utility model, the cooling tower air inlet a week is netted, and a week can all enter the air.)
Preferably, the air deflector 1 has a rectangular sheet shape.
Preferably, the air guide duct 2 is of an arch structure (the vertical section of the air guide duct is of an arch structure).
Preferably, the air deflectors 1 are circumferentially arranged along an air inlet of the cooling tower, the air deflectors are fixed on the ground and the outer wall of the cooling tower, and the number of the air deflectors 1 is 36.
Preferably, the air inlet of the air guide pipe 2 is flush with the air inlet of the cooling tower, the air outlet of the air guide pipe extends into the vertical shaft 3 and is communicated with the vertical shaft 3, and the number of the air guide pipes 2 is 4.
Preferably, 4 air guide pipes 2 are arranged in the cooling tower in a circumferential array mode, and an included angle theta between one air guide pipe 2 and the average annual wind directioncwIs 0 deg..
Preferably, the air guide pipe 2 is divided into 3 sections, and is designed to be of a porous structure, wherein the porosity of one section located in the central area of the cooling tower is 0.714, and the porosity of the other two sections is 0.323. (in the present invention, the term "porosity" means the ratio of the area of the pores to the total area of the section)
Preferably, the vertical shaft 3 is cylindrical, the vertical shaft 3 is communicated with the air outlet of the air guide pipe 2, and the bottom surface of the vertical shaft 3 is higher than the water collecting pool by a certain distance, so that water in the water collecting pool can be prevented from entering the vertical shaft.
As shown in FIG. 4, the coupling of the air guide plate 1 and the air guide pipe 2 improves the temperature drop Deltat of the cooling towerwThe cooling capacity of the cooling tower is enhanced; the air guide plate 1 is arranged to reduce air inlet resistance, reduce the air flow temperature and humidity level of a central area and improve an air inlet aerodynamic field, so that air entering the tower from the windward side of the cooling tower flows into the tower along the radial direction as much as possible in the horizontal direction, the air outflow area at the rear side of the air inlet of the cooling tower is reduced, the longitudinal ventilation volume of the cooling tower is increased, more air and high-temperature circulating water are subjected to heat-mass exchange, the air inlet resistance is reduced by the arrangement of the air guide pipe 2, the air flow temperature and humidity level of the central area are reduced, the air can better enter the central area of the cooling tower to be subjected to heat exchange with the high-temperature circulating water, and the cooling effect and the cooling efficiency are.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A device for improving influence of ambient crosswind on heat transfer and mass transfer performance of a cooling tower is characterized in that: a plurality of air deflectors are uniformly arranged at the air inlet of the cooling tower in the circumferential direction, a plurality of air guide pipes are uniformly arranged in the rain area of the cooling tower, and the air guide pipes extend to the central area of the cooling tower from the outer edge of the air inlet of the cooling tower and are communicated with the vertical shaft.
2. The apparatus of claim 1, wherein the apparatus for improving the effect of ambient crosswind on the heat and mass transfer performance of the cooling tower comprises: the air deflector is rectangular sheet.
3. The apparatus of claim 1, wherein the apparatus for improving the effect of ambient crosswind on the heat and mass transfer performance of the cooling tower comprises: the air guide pipe is of an arch structure.
4. The device for improving the influence of ambient crosswind on the heat and mass transfer performance of a cooling tower as claimed in claim 1 or 2, wherein: the air guide plates are arranged along the circumferential direction of the air inlet of the cooling tower and fixed on the ground and the outer wall of the cooling tower, and the number of the air guide plates is 36.
5. The device for improving the influence of ambient crosswind on the heat and mass transfer performance of a cooling tower as claimed in claim 1 or 3, wherein: the air inlet of the air guide pipe is flush with the air inlet of the cooling tower, the air outlet of the air guide pipe extends into the vertical shaft and is communicated with the vertical shaft, and the number of the air guide pipes is 4.
6. The device of claim 5, wherein 4 of the wind-guiding tubes are arranged in a circumferential array in the cooling tower, and one of the wind-guiding tubes forms an angle θ with the average annual wind directioncwIs 0 deg..
7. The device for improving the influence of ambient crosswind on the heat and mass transfer performance of a cooling tower as claimed in claim 1 or 6, wherein the air guide pipe is divided into 3 sections, wherein the porosity of one section in the central area of the cooling tower is 0.714, and the porosity of the other two sections is 0.323.
8. The apparatus of claim 7, wherein the apparatus for improving the effect of ambient crosswind on the heat and mass transfer performance of the cooling tower comprises: the vertical shaft is cylindrical and is communicated with the air outlets of the air guide pipes, the bottom surface of the vertical shaft is higher than the water collecting pool by a distance and is used for preventing water in the water collecting pool from entering the vertical shaft, and the vertical shaft is located in the center of the interior of the cooling tower and is located in the center of the four air guide pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921171257.8U CN210952491U (en) | 2019-07-24 | 2019-07-24 | Device for improving influence of environment crosswind on heat transfer and mass transfer performance of cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921171257.8U CN210952491U (en) | 2019-07-24 | 2019-07-24 | Device for improving influence of environment crosswind on heat transfer and mass transfer performance of cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210952491U true CN210952491U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921171257.8U Expired - Fee Related CN210952491U (en) | 2019-07-24 | 2019-07-24 | Device for improving influence of environment crosswind on heat transfer and mass transfer performance of cooling tower |
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| Country | Link |
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| CN (1) | CN210952491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484526A (en) * | 2020-11-27 | 2021-03-12 | 山东大学 | Natural ventilation cooling tower with synergistic effect of internal booster fan and comprehensive synergistic technology |
-
2019
- 2019-07-24 CN CN201921171257.8U patent/CN210952491U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484526A (en) * | 2020-11-27 | 2021-03-12 | 山东大学 | Natural ventilation cooling tower with synergistic effect of internal booster fan and comprehensive synergistic technology |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200707 |