CN205156661U - Air cooling fan beam wind guiding device - Google Patents
Air cooling fan beam wind guiding device Download PDFInfo
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- CN205156661U CN205156661U CN201520876948.3U CN201520876948U CN205156661U CN 205156661 U CN205156661 U CN 205156661U CN 201520876948 U CN201520876948 U CN 201520876948U CN 205156661 U CN205156661 U CN 205156661U
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- guide sleeve
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- air guide
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- 238000001816 cooling Methods 0.000 title claims abstract description 80
- 239000004744 fabric Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 230000002411 adverse Effects 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 153
- 238000001179 sorption measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses an air cooling fan beam wind guiding device includes: kuppe, kuppe support and tubulose ring. The utility model discloses a round platform shape kuppe that a handle is big is set up in fan bottom, when no beam wind or beam wind are more weak, the intake that improves air cooling island fan can be shown, when having the beam wind, not only can be the leading -in fan of beam wind, increase the fan delivery, can also increase the pressure of fan negative pressure region, reduce the beam wind and to the adverse effect of air cooling condenser fan, convert the beam wind that is harmful to be favorable to the fan power wind to improve the heat transfer efficiency of air cooling condenser.
Description
Technical Field
The utility model relates to a thermal power energy power technical field, in particular to air cooling fan crosswind guiding device.
Background
The following description is made of the related art of the present invention, but these descriptions do not necessarily constitute the prior art of the present invention.
The contradiction of rich coal and water shortage in north and west of China is gradually highlighted, and the adoption of a direct air cooling technology in a power plant has become a necessary trend. The direct air cooling technology has the advantages of water saving, small occupied area, less investment, more environmental protection, attention paid to and wide application, and the installed capacity of China reaches more than one hundred million kilowatts at present. The direct air cooling unit takes ambient air as a cooling medium of steam exhaust of a steam turbine, the air cooling condensers replace traditional water cooling condensers to perform heat exchange between air and steam, each air cooling condenser is provided with a large-scale fan, and a plurality of air cooling condensers and the fans form an air cooling platform, namely an air cooling island, wherein the air cooling island is four ten meters away from the ground, is completely exposed in the atmospheric environment and is very easily influenced by environmental factors.
As shown in fig. 1, steam exhausted from a steam turbine of the generator set enters a steam distribution pipeline 10, the steam distribution pipeline 10 sends the steam into a finned tube bundle 20, a fan air duct 30 is installed at the bottom of the air-cooled condenser, an air-cooled fan 60 sucks cold air at the bottom of an air-cooled island, the cold air is sent into the air-cooled condenser unit through an impeller, heat exchange is carried out between the cold air and the finned tube bundle 20 to generate hot air, the hot air is discharged into the air, and meanwhile, the steam flowing through the finned tube bundle 20 is cooled to become condensed water. When the cross wind 80 flows through the air cooling island, the cross wind affects the airflow of the air cooling island fan, a negative pressure area 70 is formed at the inlet of the air cooling fan 60, the airflow conveyed to the air cooling condenser by the air cooling fan 60 is reduced, the heat transfer efficiency of the air cooling condenser is affected, the operation performance is deteriorated, and the damage is brought to the safe operation of the air cooling unit. Meanwhile, when the hot air exhausted from the edge of the air cooling island moves downwards to the inlet of the air cooling fan 60 along the wind shield wall, the hot air is sucked back into the condenser again by the air cooling fan 60 to form hot air backflow, the hot air backflow can reduce the heat transfer efficiency of the air cooling condenser, the backpressure of the steam turbine is increased, and the normal operation of the unit is influenced. The transverse wind with larger kinetic energy can also block the hot wind diffusion of the front row air cooling unit and even generate the backward flow phenomenon.
Therefore, there is a need in the art for a solution that can solve the problem of poor heat transfer efficiency of air-cooled fans due to the adverse effects of the cross wind on the air-cooled fans.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air cooling fan crosswind guiding device can reduce the adverse effect of natural crosswind to air cooling condenser fan, improves air cooling condenser's heat transfer efficiency.
According to the utility model discloses an air cooling fan crosswind guiding device, include: a pod, a pod support, and a tubular ring, wherein,
the tubular ring is fixedly arranged at the bottom of a wind barrel protective screen fixing beam of the air cooling fan;
the air guide sleeve is of a circular truncated cone-shaped structure with a small top and a large bottom, and the edge of the top of the air guide sleeve is fixedly arranged at the bottom of the tubular ring;
the air guide sleeve support is fixedly sleeved on the inner side or the outer side of the air guide sleeve, and the top of the air guide sleeve support is fixed with the tubular ring.
Preferably, the outer side surface of the air guide sleeve is a guide surface, and an included angle between the guide surface and the cross section of the air guide sleeve is 25-80 degrees.
Preferably, the cross section of the air guide sleeve is as follows: circular, or polygonal; the polygon includes at least three sides.
Preferably, the height of the air guide sleeve is 1.5-5 m;
the cross section of the air guide sleeve is circular; the diameter of the top of the air guide sleeve is 3-9 m, and the diameter of the bottom of the air guide sleeve is 4-11 m; or,
the cross section of the air guide sleeve is polygonal; the diameter of the circumscribed circle at the top of the air guide sleeve is 3-9 m, and the diameter of the circumscribed circle at the bottom of the air guide sleeve is 4-11 m.
Preferably, the number of the transverse wind guiding devices is the same as that of the air cooling fans.
Preferably, the air guide sleeve is made of metal plates, non-metal plates, building membranes or industrial base cloth.
Preferably, the air guide sleeve is of an integrated structure, or the air guide sleeve is formed by combining at least two air guide plates.
Preferably, the air guide sleeve is formed by combining at least eight trapezoidal air guide plates.
Preferably, the tubular ring is: a tubular ring, or a tubular polygon; the tubular polygon includes at least three sides.
Preferably, the pod bracket includes at least three struts, one end of the struts being secured with the tubular ring.
According to the utility model discloses an air cooling fan crosswind guiding device includes: a pod, a pod support, and a tubular ring. The circular truncated cone-shaped air guide sleeve with a small top and a large bottom is arranged at the bottom of the fan, so that the air inlet volume of the air cooling island fan can be obviously increased when no transverse wind exists or the transverse wind is weaker; when transverse wind exists, the transverse wind can be guided into the fan, the wind quantity of the fan is increased, the pressure of a negative pressure area of the fan can be increased, the adverse effect of the transverse wind on the fan of the air-cooled condenser is reduced, harmful transverse wind is converted into power wind which is beneficial to the fan, and therefore the heat transfer efficiency of the air-cooled condenser is improved.
Drawings
The features and advantages of the present invention will become more readily appreciated from the detailed description section provided below with reference to the drawings, in which:
FIG. 1 is a schematic diagram showing the air flow movement of an air cooling fan in the presence of cross wind in the prior art;
fig. 2 is a schematic view illustrating the installation of the cross wind guiding device of the air cooling fan according to the present invention;
fig. 3 is a schematic view showing a cross wind deflector of an air cooling fan according to the present invention;
fig. 4 is a schematic diagram showing the movement locus of the airflow of the cross wind guiding device of the air cooling fan according to the present invention when the cross wind exists;
fig. 5 is a schematic diagram illustrating an airflow movement locus of the cross wind guiding device of the air cooling fan according to the present invention when there is no cross wind or the cross wind is weak.
Detailed Description
Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for purposes of illustration only and is not intended to limit the invention, its application, or uses.
The utility model discloses an install horizontal wind guiding device 50 additional in air cooling fan 60 bottom, can increase the pressure of the regional 70 of negative pressure, weaken horizontal wind 80 to air cooling fan 60's adverse effect, improve the air mass flow, improve the heat transfer efficiency of air cooling unit.
The technical solution of the present invention will be described in detail with reference to the accompanying drawings 2 to 5. As shown in fig. 2 and 3, the lateral wind guiding device 50 of the air cooling fan according to the present invention includes: a pod 52, a pod holder 53, and a tubular ring 51. The tubular ring 51 is fixedly arranged at the bottom of the protective net fixing beam 31 of the wind tunnel 30 of the air cooling fan 60; the air guide sleeve 52 is of a round table-shaped structure with a small top and a large bottom, the edge of the top of the air guide sleeve 52 is fixedly arranged at the bottom of the tubular ring 51, and the outer side surface of the air guide sleeve 52 is a guide surface; the air guide sleeve support 53 is fixedly sleeved on the inner side or the outer side of the air guide sleeve 52, and the top of the air guide sleeve support 53 is fixed with the tubular ring 51.
When there is a cross wind, as shown in fig. 4, the air cooling fan 60 is additionally provided with an air cooling fan cross wind guiding device 50 at the bottom, and the negative pressure region 70 at the bottom of the air cooling fan 60 moves downwards. The transverse wind 80 is guided into the wind barrel of the air cooling fan 60 through the guide surface of the transverse wind guide device 50. The airflow introduced by the transverse wind guiding device 50 is divided into two types: one is an air flow introduced through the guide surface and into the air cooling unit, which increases the air volume of the air cooling fan 60, thereby turning the harmful cross wind 80 into useful wind; the other is the airflow which is guided in through the flow guide surface and flows into the negative pressure area 70, and the airflow can continuously supplement the airflow in the negative pressure area which is sucked away by the transverse wind 80, so that the pressure in the negative pressure area is increased, and the loss of the air sucked by the air cooling fan 60 to the negative pressure area is reduced. The utility model discloses in, the blade of the flow guide face flow direction air cooling fan 60 of the cross wind tape angle produces the boosting effect to the impeller of air cooling fan 60, also can reduce air cooling fan 60's energy consumption.
When no transverse wind exists in the environment or the transverse wind is weak, the transverse wind guiding device 50 of the air cooling fan is additionally arranged to play a role in increasing the wind quantity, as shown in fig. 5. The lateral wind guiding device 50 is a circular truncated cone structure with a large diameter at the bottom and a small diameter at the top. The venturi principle is to narrow the gas flow channel from wide to narrow, so as to accelerate the gas flow speed, and further to form a vacuum-like negative pressure area near the outlet of the venturi. The utility model discloses in, air cooling fan 60 during operation, the air current of air cooling fan 60 suction accords with the venturi structure through the C region flow to the B region at 50 tops of crosswind guiding device 50 bottom of crosswind guiding device, produces the venturi effect, and then forms a similar vacuum negative pressure region between the B region at 50 tops of crosswind guiding device and the inboard of dryer, like the A region in fig. 5. The area A can generate an adsorption effect on nearby airflow, and the airflow in the environment is sucked into the air duct, so that the air quantity sucked into the air cooling fan 60 is increased.
The tubular ring 51 is used for fixing the transverse wind deflector 50, and can be a tubular circular ring or a tubular polygon; wherein the tubular polygon comprises at least three sides.
The air guide sleeve 52 is used for guiding the wind in the air into the air cooling fan 60, and the cross section of the air guide sleeve 52 can be as follows: circular, or polygonal; wherein the polygon comprises at least three sides. The larger the cross section of the shroud 52, the larger the wind introduced into the air-cooling fan 60 through the shroud 52, and the higher the heat transfer efficiency of the air-cooling fan 60. Since the fan drum 30 of the air cooling fan 60 has a circular structure, the cross section of the air guide sleeve 52 is circular according to the preferred embodiment of the present invention. The pod 52 may be a unitary structure, such as the pod 52 being a unitary, truncated cone-shaped structure; of course, the nacelle 52 may also be formed by combining at least two deflectors, for example, the nacelle 52 may be formed by combining four quarter-cone deflectors into a complete cone structure, or the nacelle 52 may be formed by combining a plurality of trapezoidal deflectors. According to a preferred embodiment of the present invention, the air guide sleeve 52 is formed by combining at least eight trapezoidal guide plates.
The height of the air guide sleeve 52 is higher, the distance between the lower end of the air guide sleeve 52 and the ground is smaller, the air quantity of the breathable air cooling fan 60 is smaller, and therefore the height of the air guide sleeve 52 is not too high. Meanwhile, the height of the air guide sleeve 52 cannot be too small, otherwise, the air quantity guided into the air duct 30 through the air guide surface is small, and the pressurization effect on the negative pressure area 70 is not obvious, so that the loss of the air sucked by the air cooling fan 60 to the negative pressure area cannot be reduced; if the height of the air guide 52 is too small, the adsorption of the area a to the airflow in the vicinity is small when there is no cross wind in the environment or the cross wind is weak, and the amount of air introduced into the wind tunnel 30 by the adsorption of the area a is also small. According to a preferred embodiment of the present invention, the height of the pod 52 is 1.5m to 5 m. Further preferably, if the cross section of the air guide sleeve 52 is circular, the diameter of the top of the air guide sleeve 52 is 3 m-9 m, and the diameter of the bottom of the air guide sleeve 52 is 4 m-11 m; if the cross section of the air guide sleeve 52 is polygonal, the diameter of the circumscribed circle at the top of the air guide sleeve 52 is 3-9 m, and the diameter of the circumscribed circle at the bottom of the air guide sleeve 52 is 4-11 m.
The included angle between the flow guide surface of the air guide sleeve 52 and the cross section of the air guide sleeve 52 is not too large, otherwise, the adsorption effect of the area A on the nearby airflow is small, and the air quantity guided into the air duct 30 due to the adsorption effect of the area A is also reduced. The smaller the angle between the flow guide surface of the air guide sleeve 52 and the cross section of the air guide sleeve 52 is, the larger the amount of air sucked into the air cooling fan 60 through the air guide sleeve 52 is. With a fixed size at the top of the pod 52, the smaller the angle, the larger the area at the bottom of the pod 52. However, the air cooling island is an air cooling platform formed by arranging a plurality of air cooling condensers and air cooling fans 60 in a certain order, and the area of the bottom corresponding to each air cooling fan 60 is limited, so that the included angle between the flow guide surface of the air guide sleeve 52 and the cross section of the air guide sleeve 52 cannot be infinitely small. According to the preferred embodiment of the present invention, the angle between the flow guiding surface of the air guide sleeve 52 and the cross section of the air guide sleeve 52 is 25 ° to 80 °.
The pod holder 53 may be configured to hold the pod 52, for example, the pod holder 53 may include at least three struts, each having one end secured to the tubular ring 51. Preferably, the pod bracket 53 includes eight struts, as shown in FIG. 3.
According to the preferred embodiment of the present invention, the air guide sleeve 52 is made of metal plate, non-metal plate, building film or industrial fabric. Preferably, the number of the lateral wind deflectors 50 is the same as that of the air cooling fans 60.
Compared with the prior art, the utility model has the advantages that the circular truncated cone-shaped air guide sleeve with small top and large bottom is arranged at the bottom of the fan, so that the air intake of the air cooling island fan can be obviously improved when no transverse wind exists or the transverse wind is weaker; when transverse wind exists, the transverse wind can be guided into the fan, the wind quantity of the fan is increased, the pressure of a negative pressure area of the fan can be increased, the adverse effect of the transverse wind on the fan of the air-cooled condenser is reduced, harmful transverse wind is converted into power wind which is beneficial to the fan, and therefore the heat transfer efficiency of the air-cooled condenser is improved.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the precise embodiments described and illustrated herein, and that various changes may be made therein by those skilled in the art without departing from the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an air cooling fan crosswind guiding device which characterized in that includes: a pod, a pod support, and a tubular ring, wherein,
the tubular ring is fixedly arranged at the bottom of a wind barrel protective screen fixing beam of the air cooling fan;
the air guide sleeve is of a circular truncated cone-shaped structure with a small top and a large bottom, and the edge of the top of the air guide sleeve is fixedly arranged at the bottom of the tubular ring;
the air guide sleeve support is fixedly sleeved on the inner side or the outer side of the air guide sleeve, and the top of the air guide sleeve support is fixed with the tubular ring.
2. The cross wind guiding device of the air-cooling fan as claimed in claim 1, wherein the outer side surface of the air guide sleeve is a guiding surface, and an included angle between the guiding surface and the cross section of the air guide sleeve is 25 ° to 80 °.
3. The air-cooled fan cross-wind deflector of claim 2, wherein the cross-section of the deflector is: circular, or polygonal; the polygon includes at least three sides.
4. The cross wind deflector of an air-cooled fan of claim 3, wherein the height of the air deflector is 1.5m to 5 m;
the cross section of the air guide sleeve is circular; the diameter of the top of the air guide sleeve is 3-9 m, and the diameter of the bottom of the air guide sleeve is 4-11 m; or,
the cross section of the air guide sleeve is polygonal; the diameter of the circumscribed circle at the top of the air guide sleeve is 3-9 m, and the diameter of the circumscribed circle at the bottom of the air guide sleeve is 4-11 m.
5. The air-cooling fan cross wind deflector of claim 1, wherein the number of cross wind deflectors is the same as the number of air-cooling fans.
6. The cross wind deflector of an air-cooled fan of claim 1, wherein the deflector is a metal plate, a non-metal plate, a building membrane or an industrial fabric.
7. The air-cooled fan cross wind deflector of claim 1, wherein the air deflector is of a unitary construction or the air deflector is formed by combining at least two air deflectors.
8. The air-cooled fan cross-wind deflector of claim 7, wherein the deflector comprises a combination of at least eight trapezoidal deflectors.
9. The air-cooled fan cross-wind deflector of claim 1, wherein the tubular ring is: a tubular ring, or a tubular polygon; the tubular polygon includes at least three sides.
10. The air-cooled fan cross-wind deflector of claim 1, wherein the cowl brace comprises at least three struts, one end of each strut being secured to the tubular ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876948.3U CN205156661U (en) | 2015-11-05 | 2015-11-05 | Air cooling fan beam wind guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520876948.3U CN205156661U (en) | 2015-11-05 | 2015-11-05 | Air cooling fan beam wind guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205156661U true CN205156661U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520876948.3U Expired - Fee Related CN205156661U (en) | 2015-11-05 | 2015-11-05 | Air cooling fan beam wind guiding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205156661U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928378A (en) * | 2016-06-22 | 2016-09-07 | 国网山西省电力公司电力科学研究院 | Air cooling element, provided with horizontal wind preventing flow-guiding device, of direct air cooling unit |
| CN106595331A (en) * | 2017-01-05 | 2017-04-26 | 华北电力大学（保定） | Strong cooling direct air-cooling condenser radiating unit |
| CN108088304A (en) * | 2018-01-18 | 2018-05-29 | 西安热工研究院有限公司 | The air guide device of horizontally disposed small-sized air cooling tower in a kind of radiator tower |
| WO2019180581A1 (en) * | 2018-03-19 | 2019-09-26 | Ormat Technolgies Inc. | Wind guiding vane apparatus |
-
2015
- 2015-11-05 CN CN201520876948.3U patent/CN205156661U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928378A (en) * | 2016-06-22 | 2016-09-07 | 国网山西省电力公司电力科学研究院 | Air cooling element, provided with horizontal wind preventing flow-guiding device, of direct air cooling unit |
| CN106595331A (en) * | 2017-01-05 | 2017-04-26 | 华北电力大学（保定） | Strong cooling direct air-cooling condenser radiating unit |
| WO2018126694A1 (en) * | 2017-01-05 | 2018-07-12 | 华北电力大学 | Strong cooling direct air-cooled condenser radiating unit and air-cooled island |
| US11175096B2 (en) | 2017-01-05 | 2021-11-16 | North China Electric Power University | Strong cooling direct air-cooled condenser radiating unit and air-cooled island |
| CN108088304A (en) * | 2018-01-18 | 2018-05-29 | 西安热工研究院有限公司 | The air guide device of horizontally disposed small-sized air cooling tower in a kind of radiator tower |
| CN108088304B (en) * | 2018-01-18 | 2024-03-08 | 西安热工研究院有限公司 | Air guiding device of small air cooling tower horizontally arranged in radiator tower |
| WO2019180581A1 (en) * | 2018-03-19 | 2019-09-26 | Ormat Technolgies Inc. | Wind guiding vane apparatus |
| US10871329B2 (en) | 2018-03-19 | 2020-12-22 | Ormat Technologies, Inc. | Wind guiding vane apparatus |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20181105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |