CN111457779A - Indirect air cooling air guide system capable of changing radial direction into different angles - Google Patents
Indirect air cooling air guide system capable of changing radial direction into different angles Download PDFInfo
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- CN111457779A CN111457779A CN202010366359.6A CN202010366359A CN111457779A CN 111457779 A CN111457779 A CN 111457779A CN 202010366359 A CN202010366359 A CN 202010366359A CN 111457779 A CN111457779 A CN 111457779A
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- air guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/10—Component parts of trickle coolers for feeding gas or vapour
- F28F25/12—Ducts; Guide vanes, e.g. for carrying currents to distinct zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses an indirect air cooling air guide system capable of changing different angles in the radial direction, which comprises an air guide module group and an execution mechanism thereof, wherein the air guide module group can change different angles in the radial direction of an indirect air cooling tower; the air guide module group consists of air guide modules; the air guide module consists of an air guide unit; the air guide units are sequentially and vertically arranged outwards along the radial direction of the indirect cooling tower; all the air guide units in the same air guide module group are controlled by an actuating mechanism to rotate at different angles. The invention discloses a method for guiding and guiding ambient wind, which is characterized in that a wind guide system which can be changed in radial direction and different angles is arranged outside a cooling triangular area of an indirect air cooling tower so as to adapt to the change of ambient wind direction and wind speed, wind guide units at different positions in the same module group in the radial direction are rotated in different angles in the radial direction, so that the flow guiding and the flow guiding of the ambient wind are realized, the air inlet of an indirect air cooling triangular radiator is maximized, and the heat exchange performance of the indirect air cooling tower is improved.
Description
Technical Field
The invention belongs to the field of indirect air cooling of a fire/nuclear power station, and particularly relates to an indirect air cooling air guide system capable of changing different angles in the radial direction.
Background
In the coal-fired power plant, the wet cooling tower with the same parameters consumes more water than the indirect air cooling tower, so that the indirect air cooling tower is widely applied to northern water-deficient areas and achieves better performance. However, in summer and when the wind speed is high, the heat exchange performance of the indirect cooling tower is obviously reduced, and the safe operation of the unit is seriously influenced. Under the effect of ambient wind, partial air can flow in from one side radiator of indirect air cooling tower bottom, flows out from the opposite side radiator, and does not flow out from the export of indirect air cooling tower, forms "the thorax wind", so windward district heat transfer performance is better, and crosswind district and leeward district heat transfer performance are relatively poor, leads to the whole heat exchange efficiency of indirect air cooling tower to reduce.
Chinese application patent, application number: 201320221472.0 discloses a power station steam turbine exhaust indirect cooling tower air inlet face air guide device, including ventilation tower, guide plate and cooling tube bank, the ventilation tower lower extreme sets up the guide plate, the guide plate inboard sets up cooling tube bank, guide plate and cooling tube bank and perpendicular to the ground setting. Although the air guide plates are arranged and the air guide plate transmission device is arranged at the bottoms of the air guide plates, the rotation angles of the air guide plates are the same, the invention realizes that the rotation angles of the air guide plates are different from inside to outside for the same air guide module, the rotation angle of the outer sides of the air guide plates is large, the air guide function is realized, the rotation angle of the inner sides of the air guide plates is small, the vortex caused by environmental wind can be eliminated, the structural flow field of the indirect air cooling tower is optimized, and the cooling efficiency of the indirect air cooling tower is improved.
Disclosure of Invention
The invention aims to overcome the problem that the indirect air-cooling air guide facility in the prior art can not adapt to the change of the wind direction and the wind speed of the environment, and provides an indirect air-cooling air guide system with different radial angles, which is characterized in that the air guide system with different radial angles is arranged outside a cooling triangular radiator area of an indirect air-cooling tower,
according to the wind speed and the wind direction of the environmental wind in the area where the wind guide module group is located, the wind guide units of the same wind guide module in the wind guide module group are rotated by different angles through the executing mechanism, so that the change of the wind speed and the wind direction of the environmental wind is adapted, the internal and external air flow field structures of the indirect air cooling tower are changed, and the heat exchange performance of the indirect air cooling tower is improved.
In order to achieve the above object, the present invention has the following technical means.
The utility model provides a but indirect air cooling air ducting of radial variation different angles, includes along the wind-guiding module group of the radial variation different angles of indirect air cooling tower and actuating mechanism, its characterized in that: the air guide module groups which can be changed into different angles in the radial direction are vertically arranged along the radial direction of the indirect air cooling tower and are uniformly arranged along the circumferential direction of the indirect air cooling tower; the air guide module group consists of air guide modules; the air guide module consists of an air guide unit; all the air guide units in the same air guide module group are controlled by an actuating mechanism to rotate at different angles.
The air guide module is composed of 1-8 air guide units, and the air guide units are sequentially and vertically arranged outwards along the radial direction of the indirect air cooling tower.
The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the number of the wind guide module groups with different angles which can be changed in the radial direction is preferably an integer of n, n/2, n/3, n/4, n/5, n/6, n/7, n/8, n/9, n/10, n/11 and n/12 according to the number n of the cooling triangular units of the indirect air cooling tower.
The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the wind guide module group capable of changing radial direction into different angles is composed of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 and 18 wind guide modules.
The air guide module group is arranged outside the cooling triangular unit area, and the inner side of each air guide module is positioned on a radial extension line of an outer intersection point of two adjacent cooling columns.
Each air guide unit of the air guide module group can rotate around a fixed shaft, and the rotating shaft is fixed on the air guide unit.
The air guide module is fixed by a steel structure frame, the upper end and the lower end of the frame are respectively flush with the upper end surface and the lower end surface of the cooling triangle, the inner end part of the frame is fixed with the end wall of the outer intersection point of the two adjacent cooling columns, the inner air guide unit and the outer air guide unit of the same air guide module group have different rotating angles along the radial direction, the outer air guide unit has a large rotating angle, and the inner air guide unit has a.
The rotation angle of the air guide units is determined by the relative position of the indirect air cooling tower where the air guide module group is located, the wind speed and the wind direction at the position, the rotation angle of each air guide unit of the air guide module group is 0 degree at the center of the windward side, the rotation angle of the outermost air guide unit in the air guide module is sequentially increased from the windward side to the tower side and is sequentially decreased from the tower side to the leeward side, and the rotation angle of each air guide unit in the same air guide module group from outside to inside is gradually decreased.
The rotation angles of the outermost wind guide unit of the wind guide module are preferably 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees and 45 degrees from the windward side to the tower side in sequence, and preferably 45 degrees, 40 degrees, 35 degrees, 30 degrees, 25 degrees, 20 degrees, 15 degrees, 10 degrees, 5 degrees and 0 degrees from the tower side to the leeward side in sequence.
Compared with the prior art, the invention has the beneficial effects that: the air guide systems which can be radially changed into different angles are arranged outside the cooling triangular area of the indirect air cooling tower, and the air guide units at different positions in the same air guide module in the air guide module group are rotated into different angles according to the ambient wind speed and the wind direction outside each air guide module group so as to adapt to the changes of the ambient wind direction and the wind speed, maximize the air inlet of the cooling triangular radiator of the indirect air cooling tower, and improve the heat exchange performance of the indirect air cooling tower.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading the following detailed description of non-limiting implementations with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of an indirect air-cooling air guiding system with different radial angles.
Fig. 2 is a schematic layout view of an air guide module group of the indirect air-cooling air guide system with different radial angles.
Fig. 3 is a schematic view of states of the air guide units under ambient wind conditions.
In the figure: 1-an indirect cooling tower; 2-an air guide unit; 3-cooling the triangle; 4-a shutter; 5-an actuator; 6-a rotating shaft; 7-ambient wind, 8-wind guide module group.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
As shown in fig. 1 and 2, an indirect air-cooling wind guiding system capable of changing different angles in the radial direction comprises an indirect air-cooling tower 1, a wind guiding plate 2 and a cooling triangle 3, wherein a wind guiding module 2 is composed of four wind guiding units 21, 22, 23 and 24, and each wind guiding unit can rotate around a fixed shaft. The air guide unit 2 is vertically arranged outside the indirect cooling tower 1 and the cooling triangular area along the radial direction, and the innermost air guide unit 21 is positioned on a radial extension line of an outer intersection point of two adjacent cooling columns. The distance between the connection point of the actuating mechanism 5 and each wind guide unit 21, 22, 23, 24 in the same wind guide module and the respective rotating shaft 6 is gradually reduced, and the wind guide units at different radial positions of each group of wind guide modules can be controlled to rotate by different angles.
As shown in fig. 2, under the ambient wind condition, the wind guiding units 21, 22, 23, and 24 outside the cooling triangle 3 on the windward side of the air cooling tower 1 are in the state shown by the solid line in the figure, the wind speed is parallel to the wind guiding units 21, 22, 23, and 24, the ambient wind can enter the cooling triangle 3 through the louver 4 at an almost vertical angle, and the airflow distribution at the two sides inside the cooling triangle 3 is relatively uniform; in other areas of the indirect cooling tower 1 except the windward side, the air guide units 21, 22, 23 and 24 can rotate for a certain angle around the rotating shaft 6 according to the wind direction of the area where the air guide units are located, and the distance between the connecting point of the actuating mechanism 5 and the air guide units 21, 22, 23 and 24 and the rotating shaft 8 of each air guide unit is gradually reduced, so that the air guide units 21, 22, 23 and 24 can rotate for different angles around the rotating shafts 6 under the control of the actuating mechanism 5, the rotating angles of the outer air guide units 23 and 24 are large to play a role of guiding wind, and the rotating angles of the inner air guide units 21 and 22 are small to play a role of guiding wind. When the area of the wind guide module group 8 is wind from the right side as shown in the figure, the actuating mechanism 5 drives the wind guide units 21, 22, 23 and 24 to rotate to reach the state shown by dotted lines in the figure, the wind guide effect on the environmental wind is realized under the combined action of the wind guide units on the inner side and the outer side, and finally the environmental wind 7 enters the cooling triangle 3 along the track shown in the figure, so that the air flow field in the cooling triangle 3 is effectively adjusted, the problems of airflow vortex and hot wind backflow in the cooling triangle unit caused by the side wind condition are solved, the wind on the two sides is more uniform, and the cooling effect is improved.
Fig. 3 is a schematic view showing the states of the air guide units in different air guide module groups around the indirect cooling tower under ambient wind conditions. When the ambient wind 7 is coming from the left side shown in the figure, the rotation angle of each air guide unit of the air guide module group 8 at the middle position on the windward side of the indirect cooling tower 1 is 0 °, the rotation angle of each air guide module group gradually increases along the direction of the air guide module group towards the two sides of the indirect cooling tower, the rotation angle of the outermost air guide unit 24 from the windward side to the two sides of the indirect cooling tower is respectively 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 40 °, 30 °, 25 °, 20 °, 15 °, 10 °, 5 °, and 0 °. Meanwhile, the rotation angles of the air guide units 23, 22 and 21 of the same air guide plate group are reduced in sequence.
The variable-angle indirect air cooling tower air inlet guide system comprises an air guide module group, wherein the air guide module group is provided with a plurality of air guide units, and the air guide units are arranged outside the cooling triangular area of the indirect air cooling tower.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a but indirect air cooling air ducting of radial variation different angles, includes along the wind-guiding module group of the radial variation different angles of indirect air cooling tower and actuating mechanism, its characterized in that:
the air guide module groups which can be changed into different angles in the radial direction are vertically arranged along the radial direction of the indirect air cooling tower and are uniformly arranged along the circumferential direction of the indirect air cooling tower; the air guide module group consists of air guide modules; the air guide module consists of an air guide unit; all the air guide units in the same air guide module group are controlled by an actuating mechanism to rotate at different angles.
2. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the number of the wind guide module groups with different angles which can be changed in the radial direction is preferably an integer of n, n/2, n/3, n/4, n/5, n/6, n/7, n/8, n/9, n/10, n/11 and n/12 according to the number n of the cooling triangular units of the indirect air cooling tower.
3. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the wind guide module group capable of changing radial direction into different angles is composed of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 and 18 wind guide modules.
4. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the air guide module is composed of 1, 2, 3, 4, 5, 6, 7 and 8 air guide units, and the air guide units are sequentially and vertically arranged outwards along the diameter of the indirect air cooling tower.
5. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the air guide module group is arranged outside the cooling triangular unit area, and the inner side of each air guide module is positioned on a radial extension line of an outer intersection point of two adjacent cooling columns.
6. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: each air guide unit of the air guide module group can rotate around a fixed shaft, and the rotating shaft is fixed on the air guide unit.
7. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the air guide module is fixed by a steel structure frame, the upper end and the lower end of the frame are respectively flush with the upper end face and the lower end face of the cooling triangle, and the inner end part of the frame is fixed with the end wall of the outer intersection point of the two adjacent cooling columns.
8. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: in the same air guide module group, the inner and outer air guide units rotate at different angles along the radial direction, the outer air guide unit rotates at a large angle, and the inner air guide unit rotates at a small angle.
9. The indirect air-cooling air guide system capable of changing different angles in the radial direction as claimed in claim 1, wherein: the rotation angle of the air guide units is determined by the relative position of the indirect air cooling tower where the air guide module group is located, the wind speed and the wind direction at the position, the rotation angle of each air guide unit of the air guide module group is 0 degree at the center of the windward side, the rotation angle of the outermost air guide unit in the air guide module is sequentially increased from the windward side to the tower side and is sequentially decreased from the tower side to the leeward side, and the rotation angle of each air guide unit in the same air guide module group from outside to inside is gradually decreased.
10. The indirect air-cooled air guiding system capable of changing radially and at different angles as claimed in claim 9, wherein: the rotation angles of the outermost wind guide unit of the wind guide module are preferably 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees and 45 degrees from the windward side to the tower side in sequence, and preferably 45 degrees, 40 degrees, 35 degrees, 30 degrees, 25 degrees, 20 degrees, 15 degrees, 10 degrees, 5 degrees and 0 degrees from the tower side to the leeward side in sequence.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112902694A (en) * | 2021-03-03 | 2021-06-04 | 山东大学 | Indirect air cooling tower for improving cooling effect |
CN113432483A (en) * | 2021-05-24 | 2021-09-24 | 东南大学 | Self-adaptive adjusting method for inclination angle of internal fan of indirect air cooling tower |
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CN113432483A (en) * | 2021-05-24 | 2021-09-24 | 东南大学 | Self-adaptive adjusting method for inclination angle of internal fan of indirect air cooling tower |
CN113432483B (en) * | 2021-05-24 | 2022-04-29 | 东南大学 | Self-adaptive adjusting method for inclination angle of internal fan of indirect air cooling tower |
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