CN111397429B - Indirect air cooling air guide module group capable of changing radial direction into different angles - Google Patents
Indirect air cooling air guide module group capable of changing radial direction into different angles Download PDFInfo
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- CN111397429B CN111397429B CN202010376716.7A CN202010376716A CN111397429B CN 111397429 B CN111397429 B CN 111397429B CN 202010376716 A CN202010376716 A CN 202010376716A CN 111397429 B CN111397429 B CN 111397429B
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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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Abstract
The invention discloses an indirect air-cooling wind guide module group capable of changing radial direction into different angles, which comprises wind guide modules capable of changing radial direction into different angles and an actuating mechanism thereof, wherein the wind guide modules capable of changing radial direction into different angles are vertically arranged along the radial direction of an indirect air cooling tower and are arranged in the wind guide module group at equal intervals along the circumferential direction of the indirect air cooling tower; the air guide module consists of an air guide unit and an air guide unit rotating shaft; the air guide unit is controlled to rotate by an actuating mechanism through a driving rod; and the driving rod and the air guide unit are provided with an air guide unit driving connection point. According to the invention, the air guide units on the outer side and the inner side in the air guide module group can be rotated by the actuating mechanism at different angles along the radial direction through the driving rod according to the environmental wind direction and the wind speed of the area where the air guide module group is located under the environmental wind condition, so that the flow guide and the flow guide of the environmental wind are realized, the air inlet of the 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 wind guide module group capable of changing different angles in the radial direction.
Background
The indirect air cooling system of natural draft of steam power plant utilizes the natural convection action suction environment wind of air cooling tower, realizes the cooling to the circulating water through cooling triangle unit radiator. The cooling triangular unit is a core heat transfer unit of the indirect air cooling system, and the cooling characteristic and the anti-freezing characteristic of the indirect air cooling system are directly influenced by the distribution characteristic of a flow field inside the cooling triangular unit. The environmental wind is an important factor influencing the cooling characteristic of the cooling triangular unit, particularly for the cooling triangular unit of a side fan section, the environmental wind enters the cooling triangular unit through the shutter at a certain angle, so that the windward speed and the ventilation quantity of cooling columns on two sides of the cooling triangular unit have great difference, and vortex is possibly formed inside the cooling triangular unit and hot air backflow is caused, so that the cooling capacity of the radiator can be greatly reduced, the cooling tube bundle is easily frozen in severe cold weather in winter, and the safe operation of an indirect air cooling system is influenced.
Chinese application patent, application number: 201620341807.6, discloses an air guiding device for air cooling tower of indirect air cooling unit, which comprises a plurality of guiding plates arranged around the air cooling tower and having the same height as the air cooling radiator; the guide plate group and the tangent line of the outer edge of the radiator at the bottom of the air cooling tower form a certain angle, and the angle can change along with the change of the environmental wind direction. The invention improves the uniformity of air inlet of radiators of different sectors to a certain extent, but each air deflector only has the same rotation angle according to the environmental wind direction and cannot be independently controlled according to the wind directions of different sector areas around the indirect air cooling tower.
Disclosure of Invention
The invention aims to solve the problem that an indirect air-cooling air guide facility in the prior art cannot adapt to the change of the environmental wind direction and the wind speed, and provides an indirect air-cooling air guide module group with different radial angles.
In order to achieve the above object, the present invention has the following technical means.
The utility model provides a but not the indirect air cooling wind-guiding module group of different angles of radial variation, includes but the wind-guiding module of radial variation different angles and actuating mechanism, its characterized in that: the air guide modules which can be changed into different angles in the radial direction are vertically arranged in the radial direction of the indirect air cooling tower, and are arranged in the air guide module group at equal intervals in the circumferential direction of the indirect air cooling tower; the air guide module consists of an air guide unit and an air guide unit rotating shaft; the air guide unit is controlled to rotate by an actuating mechanism through a driving rod; and the driving rod and the air guide unit are provided with an air guide unit driving connection point.
The air guide module group capable of changing radial direction into different angles is composed of 1-18 air guide modules.
The air guide modules with the same radial variable angle are arranged in the air guide module group at equal intervals, and the interval ld is an integral multiple of 1-18 of the circumferential distance ls of one cooling triangle.
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 diameter of the indirect air cooling tower.
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 on the outer side of the cooling triangle unit.
The wind guide unit rotating shaft is positioned on a radial extension line of the intersection point of two adjacent cooling columns, and two ends of the rotating shaft are fixed on the steel structure frame through bearings.
The positions of the wind guide unit rotating shafts on each wind guide unit are the same, and the wind guide unit rotating shafts are arranged at the inner end, the outer end or a certain distance ln from the inner end of the wind guide unit, wherein the ln range is 0< ln < L, and L is the distance between the inner end and the outer end of the wind guide unit.
The distances between the driving connection points of the air guide units and the rotating shafts of the air guide units are different, the driving connection point of the innermost air guide unit is arranged at the inner end and the outer end of the air guide unit, which are not provided with the rotating shafts, or at the position which is a certain distance l1 away from the rotating shafts of the air guide units, wherein the range of l1 is 0< l1 ≤ lmax, and lmax is the larger of the distance ln between the rotating shafts of the air guide units and the inner end and the distance lw between the rotating shafts of the air guide units and the outer end, and the distance l1 between the air guide units and the rotating shafts of the air guide units is gradually reduced from inside to outside along the air guide module.
The inner and outer air guide units of the air guide module group have different rotation angles along the radial direction, the outer air guide unit has a large rotation angle, and the inner air guide unit has a small rotation angle.
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.
Compared with the prior art, the invention has the beneficial effects that: the indirect air cooling air guide module group with different radial variable angles is arranged outside the cooling triangular area of the indirect air cooling tower, and each air guide unit of the same air guide module is rotated by different angles according to the wind speed and the wind direction of the area where the indirect air cooling tower is located, so that the problem of uneven air inlet of the cooling columns on the two sides inside the cooling triangular unit of the indirect air cooling tower under the side wind condition is solved, and the heat exchange performance of the indirect air cooling tower is improved.
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 module set with a rotating shaft of an air-guiding unit located at the inner end of the air-guiding unit and capable of changing radially to different angles.
Fig. 2 is a schematic structural view of an indirect air-cooling air guiding module set with a rotating shaft of the air guiding unit located at a certain position in the middle of the air guiding unit and capable of changing radially to different angles.
Fig. 3 is a schematic structural view of an indirect air-cooling air guiding module set with a rotating shaft of the air guiding unit located at the outer end of the air guiding unit and capable of changing radially to different angles.
Fig. 4 is a schematic structural diagram of the wind guide module group in which the rotation axis of the wind guide unit is located on the radial extension line of the inner intersection point of the cooling column and the pitch of the wind guide modules is 2 times the circumferential distance of the cooling triangle.
Fig. 5 is a schematic view of states of the air guide units under ambient wind conditions.
In the figure: 1-cooling the triangle; 2-an air guide module; 21. 22, 23, 24-wind guide unit; 210-inner end of wind guide unit; 211-outer end of wind guiding unit; 3-a shutter; 4-an actuator; 5-a wind guide unit rotating shaft; 6-a drive rod; 7-wind guide unit driving connection point, 8-ambient wind, 9-indirect air cooling tower and 10-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 to 4, the radial variable-angle air guide module group is composed of an air guide module 2 and an actuator 4 thereof, wherein the air guide module 2 is composed of four air guide units 21, 22, 23, and 24, and the distance between the inner end and the outer end of the air guide unit is L. The air guide modules 2 are vertically arranged on the outer side of the cooling triangle 1 along the radial direction, the innermost air guide unit 21 is positioned on a radial extension line of the intersection point of two adjacent cooling columns, and the distance between two adjacent groups of air guide modules is ld. Each air guide unit is provided with a fixed rotating shaft 5, the positions of the rotating shafts 5 on each air guide unit are the same, the rotating shafts are positioned at the inner end and the outer end of the air guide unit or at the position of ln away from the inner end of the air guide unit, and the distance between each rotating shaft 5 and the outer end of the air guide unit is lw. The air guide units 21, 22, 23 and 24 can be controlled by the actuating mechanism 4 to rotate through the driving rod 6, the distance between the connecting point 7 of the air guide units 21, 22, 23 and 24 and the driving rod and the rotating shaft 5 is l1, and the distances are sequentially reduced from the inside to the outside along the radial direction by l1, so that the air guide units of each set of air guide modules can rotate at different angles.
Fig. 5 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 8 is coming from the left side as shown in the figure, the rotation angle of the wind guide units of the wind guide module group 10 at the middle position of the windward side of the indirect cooling tower 9 is 0 °, the rotation angle of each wind guide module group is gradually increased along the direction of the wind guide module group to the two sides of the indirect cooling tower, the rotation angle of the wind guide units is sequentially reduced from the tower side to the central area of the leeward side, and simultaneously, the rotation angles of the wind guide units 24, 23, 22 and 21 of the same group of modules are sequentially reduced.
In example 1, the axis of rotation of the air guide unit is located on the radial extension line of the outer intersection point of the cooling column.
As shown in fig. 1, the wind guide unit rotation shaft 5 is located at the inner end of the wind guide units 21, 22, 23, 24, the distance between the wind guide unit rotation shaft 5 and the outer end of the wind guide unit is lw, and the distances l1 between the wind guide unit driving connection point 7 and the wind guide unit rotation shaft 5 are 0.9lw, 0.7lw, 0.5lw, and 0.3lw, respectively, from the inside to the outside. Under the condition of ambient wind, each wind guide unit in the central area of the windward side of the indirect air cooling tower is in a state shown by a solid line in fig. 1, the wind direction is parallel to the directions of the wind guide units 21, 22, 23 and 24, the ambient wind can enter the cooling triangle 1 through the shutter 3 at an approximate vertical angle, and a relatively uniform flow field can be formed in the cooling triangle unit; in the area outside the center of the windward side, a certain included angle is formed between the ambient wind and the radial direction of the indirect air cooling tower, each wind guide unit 21, 22, 23 and 24 can rotate at different angles around the rotating shaft 5 under the control of the actuating mechanism 4 through the driving rod 6, and the outer wind guide units 23 and 24 have larger rotating angles and can guide the ambient wind; the inner air guide units 21 and 22 have a small rotation angle and can play a role in drainage. When the area where the wind guide module group is located is left-side incoming wind as shown in fig. 1, the wind guide units 21, 22, 23 and 24 are in a state shown by dotted lines, and under the combined action of the inner and outer wind guide units, ambient wind 8 can enter the cooling triangle 1 along the track shown in the figure, so that the internal air flow field structure of the cooling triangle 3 is effectively improved, the problems of airflow vortex and hot wind backflow in the cooling triangle unit under the condition of cross wind are solved, the cooling columns on two sides are more uniformly exposed to wind, and the cooling effect of the cooling triangle unit is improved.
As shown in fig. 2, the distance between the inner end and the outer end of the air guide unit is L, and the distance ln between the rotation axis 5 of the air guide unit and the inner end of the air guide unit is = g
L, the distance between the driving connection point 7 of each air guide unit and the rotating shaft 5 of the air guide unit is lw = L, and the distances L1 between the driving connection point 7 of each air guide unit and the rotating shaft 5 of the air guide unit are lw, lw and L from inside to outside in sequence,
lw and lw, namely the distance between the two still follows the trend of gradually reducing from inside to outside, so the purposes that the outer air guide unit rotates at a larger angle and the inner air guide unit rotates at a relatively smaller angle can be achieved, and the guide and the drainage effects on the environmental wind are respectively realized.
As shown in fig. 3, the wind guide unit rotating shaft 5 is located at the outer end of the wind guide units 21, 22, 23, 24, the distance from the wind guide unit rotating shaft 5 to the inner end of the wind guide unit is ln, and the distance l1 between the wind guide unit driving connection point 7 and the wind guide unit rotating shaft 5 is 0.9ln, 0.7ln, 0.5lw, 0.3ln respectively from inside to outside.
Example 2 the axis of rotation of the air guide unit is located on the radial extension of the inner intersection of the cooling column.
As shown in fig. 4, in this embodiment, the rotation axis of the wind guide unit is located on a radial extension line of the inner intersection point of the cooling column, and the distance ld between two adjacent groups of wind guide modules is 2 times the circumferential distance ls of the cooling triangular unit, i.e., ld =2 ls. The wind guide unit rotating shaft 5 is positioned at the inner ends of the wind guide units 21, 22, 23 and 24, the distance between the wind guide unit rotating shaft 5 and the outer end of the wind guide unit is lw, and the distance l1 between the wind guide unit driving connection point 7 and the wind guide unit rotating shaft 5 is 0.9lw, 0.7lw, 0.5lw and 0.3lw from inside to outside in sequence. Compared with the embodiment 1, the structure has the advantages that the wind guide module group can not only realize the diversion and the drainage of environmental wind, but also play a certain flow equalizing role, can balance the ventilation quantity of the cooling columns on the two sides of the cooling triangular unit, and further improves the cooling effect.
According to the wind guide module group with different angles, the wind guide modules with different angles are arranged, the outer wind guide unit of the same wind guide module in the wind guide module group is adjusted to rotate by a larger angle and the inner wind guide unit rotates by a smaller angle according to the wind speed and the wind direction of the area where the wind guide module group is located, ambient wind is guided to cool the triangular unit at a proper angle under the condition of cross wind, the flow field structure of the cooling triangular unit is improved, and the heat exchange performance of the indirect air cooling tower is improved.
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 (5)
1. The utility model provides a but not the indirect air cooling wind-guiding module group of different angles of radial variation, includes but the wind-guiding module of radial variation different angles and actuating mechanism, its characterized in that:
the air guide modules which can be changed into different angles in the radial direction are vertically arranged along the radial direction of the outer side of the indirect air cooling tower body, and are arranged in the air guide module group at equal intervals along the circumferential direction of the indirect air cooling tower; the air guide module consists of 2-8 air guide units and an air guide unit rotating shaft; the air guide units are sequentially and vertically arranged outwards along the radial direction of the indirect air cooling tower and are controlled to rotate by the actuating mechanism through the driving rod; the driving rod and the air guide unit are provided with an air guide unit driving connection point; the air guide unit rotating shaft is positioned on a radial extension line of the intersection point of two adjacent cooling columns, the position of the air guide unit rotating shaft is the same as that of each air guide unit, and the air guide unit rotating shaft is positioned at the inner end, the outer end or a certain distance ln from the inner end of the air guide unit, wherein the ln range is 0< ln < L, and L is the distance between the inner end and the outer end of the air guide unit; the distances between the driving connection points of the air guide units and the rotating shafts of the air guide units are different, the driving connection point of the innermost air guide unit is arranged at the inner end and the outer end of the air guide unit, which are not provided with the rotating shafts, or at a position which is a certain distance l1 away from the rotating shafts of the air guide units, wherein the range of l1 is 0< l1 ≤ lmax, and lmax is the larger of the distance ln between the rotating shafts of the air guide units and the inner end and the distance lw between the rotating shafts of the air guide units and the outer end, and the distance l1 between the air guide units and the rotating shafts of the air guide units is gradually reduced from inside to outside along the air guide module; the inner and outer air guide units of the air guide module group have different rotation angles along the radial direction, the outer air guide unit has a large rotation angle, and the inner air guide unit has a small rotation angle.
2. The indirect air-cooling wind guide module group capable of changing radial direction into different angles according to claim 1, characterized in that: the air guide module group capable of changing radial direction into different angles is composed of 1-18 air guide modules.
3. The indirect air-cooling wind guide module group capable of changing radial direction into different angles according to claim 1, characterized in that: the air guide modules with different radial angles are arranged in the air guide module group at equal intervals, and the interval ld is an integral multiple of 1-18 of the circumferential distance ls of one cooling triangle.
4. The indirect air-cooling wind guide module group capable of changing radial direction into different angles according to claim 1, characterized in that: 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 on the outer side of the cooling triangle unit.
5. The indirect air-cooling wind guide module group capable of changing radial direction into different angles according to claim 1, characterized in that: 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.
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| CN201302422Y (en) * | 2008-11-27 | 2009-09-02 | 华北电力大学（保定） | Even air intake guiding device for natural ventilation cooling tower |
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