CN112556450B - High-order natural draft cooling tower of receiving water - Google Patents
High-order natural draft cooling tower of receiving water Download PDFInfo
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- CN112556450B CN112556450B CN202011395217.9A CN202011395217A CN112556450B CN 112556450 B CN112556450 B CN 112556450B CN 202011395217 A CN202011395217 A CN 202011395217A CN 112556450 B CN112556450 B CN 112556450B
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- water
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- tower
- natural draft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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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
-
- 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
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/04—Distributing or accumulator troughs
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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
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/06—Spray nozzles or spray pipes
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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
Abstract
The invention provides a high-position water-collecting natural ventilation cooling tower which comprises a tower body, wherein a water remover, a water distribution layer, a packing layer and a water collecting device are sequentially arranged in the tower body from top to bottom; the water collecting devices are arranged in rows, and the water collecting devices are oppositely arranged below the packing layer by the center of the packing layer. The high-level water-collecting natural ventilation cooling tower can improve the ventilation capacity of the cooling tower, increase the aerodynamic performance, improve the cooling performance of the cooling tower and increase the cooling load of the cooling tower.
Description
Technical Field
The invention relates to the technical field of cooling towers, in particular to a natural ventilation cooling tower for high-level water collection.
Background
The natural draft cooling tower is important cold end equipment in the thermal power generation process, and the thermal efficiency of the whole thermodynamic cycle can be seriously influenced by the quality of the thermodynamic characteristics, so that the improvement of the heat exchange performance of the cooling tower has obvious economic benefit and energy-saving effect. The basic working principle of the natural ventilation cooling tower is that circulating water falls from a nozzle of a water distribution system, sequentially passes through a water distribution area, a filler area and a rain area, continuously transfers heat to air in the falling process, the temperature is continuously reduced, the temperature of the air in the tower rises after receiving the heat, the density of the air in the tower is reduced, the air and the air outside the tower form density difference, and an air source outside the tower continuously enters the cooling tower under the driving of the density difference to form a continuous heat exchange process.
However, the natural ventilation cooling tower in the prior art has the defects that external crosswind completely depends on the pressure difference between the inside and the outside of the cooling tower as power and circulating water for heat exchange, the flowing resistance of the inflowing air is increased after the inflowing air passes through a rain area and a filling area, the ventilation capacity of the cooling tower is weak, the aerodynamic performance is weakened, and the cooling performance of the cooling tower is obviously reduced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a natural draft cooling tower for high-level water collection, so as to solve the technical problems: the high-level natural draft cooling tower of receiving water among the prior art's ventilation ability is weak, and aerodynamic nature is weak, has obviously reduced the cooling performance of cooling tower.
The technical scheme of the high-level water-collecting natural ventilation cooling tower comprises the following steps:
a natural ventilation cooling tower for high-level water collection comprises a tower body, wherein a dehydrator, a water distribution layer, a packing layer and a water collection device are sequentially arranged in the tower body from top to bottom, an air outlet is formed in the top of the tower body, an air inlet is formed in the tower body below the water collection device, a plurality of first fans are arranged on the dehydrator, and a plurality of second fans are arranged at the lower part of the water collection device;
the water collecting devices are arranged in rows, and the water collecting devices are oppositely arranged below the packing layer by the center of the packing layer.
Preferably, the first fans are arranged in pairs, a plurality of pairs of the first fans are uniformly and radially arranged in the center of the dehydrator, and the first fans are arranged at the edge of the dehydrator.
Preferably, the water collecting devices have the same structure;
the water collecting device comprises a water collecting support fixedly arranged at the bottom of the filler layer and a water collecting tank horizontally arranged at the bottom of the water collecting support, and a water collecting inclined plate is arranged at the upper part of one side edge of the water collecting tank.
Preferably, the inclined angle range of the water collecting inclined plate is 30-60 degrees, and the water collecting inclined plate is provided with a splash-proof layer.
Preferably, the other side edge of the water receiving tank is obliquely provided with a water baffle, the water baffle is inclined towards one side of the water receiving inclined plate, and the inclination angle of the water baffle ranges from 15 degrees to 45 degrees.
Preferably, the dehydrator comprises a dehydrating support fixedly connected to the inner wall of the tower body and a plurality of dehydrating plates fixedly arranged on the dehydrating support, and the dehydrating plates are vertically and obliquely arranged.
Preferably, the inclination angle of the water removal plate ranges from 30 ° to 60 °.
Preferably, the water distribution layer is provided with a water distributor, the water distributor comprises a main water tank and a water distribution main pipe fixed on the beam system, the water distribution main pipe is connected with water distribution branch pipes, the bottoms of the water distribution branch pipes are connected with nozzles with downward openings, the water distribution branch pipes are all communicated with a water distribution main pipe, and the water distribution main pipe is connected with the outer part of the circulating water system tower.
Preferably, the second fans are uniformly arranged in the center of the tower body, and the first fans and the second fans are arranged in an up-down opposite mode.
Preferably, the first fan and the second fan are frequency-conversion-controlled induced draft fans.
Has the advantages that: according to the high-position water-collecting natural ventilation cooling tower, the water eliminator is provided with the first fan, the lower part of the water collecting device is provided with the second fan, the second fan can be arranged on the ground, and the first fan and the second fan can improve the flowing speed of air in the tower body and improve the ventilation capacity in the tower body; the water distribution layer is provided with a water distributor, the water distributor is provided with cooling water, the cooling water sequentially falls from the water distributor downwards, meanwhile, outside air enters the tower body from an air inlet, under the combined action of air density difference inside and outside the tower body, pumping of the first fan and driving of the second fan, the air moves upwards and sequentially passes through the water collecting device, the packing layer and the water distributor, the cooling water arranged by the water distributor exchanges heat with the air in the whole moving process of the air for cooling, then, wet hot air after heat absorption is removed with floating drops through the water remover and then is scattered out from an air outlet at the top of the tower body, and the falling cooling water is collected by the water collecting device. The setting of utilizing first fan and second fan can improve the velocity of flow of outside air in the tower body, improves the ventilation capacity of cooling tower, increases aerodynamic, has improved the cooling performance of cooling tower, increases the cooling load of cooling tower. The cooling load of the cooling tower can be even doubled; meanwhile, the lower part of the packing layer is provided with a water collecting device to realize high-level collection of cooling water, most of rain areas and a water collecting tank at the bottom of the tower are eliminated, and the noise value of the cooling tower is reduced. The high-level water-collecting natural draft cooling tower can be used for a natural draft cooling tower for new project construction, can be used for a modification project of an existing built natural draft cooling tower, and is wide in application range.
Drawings
FIG. 1 is a schematic structural view of a high-level water-receiving natural draft cooling tower of the present invention;
FIG. 2 is a schematic view of a first fan arrangement;
FIG. 3 is a schematic view of a second fan arrangement;
FIG. 4 is a first schematic view of the arrangement structure of the water collecting device;
FIG. 5 is a schematic view of the arrangement structure of the water collecting device;
fig. 6 is a schematic structural view of the water collecting device.
In the figure: 1. a first fan, 2, a water distribution layer; 3. a filler layer; 5. a water collection device; 51. a water collecting bracket; 52. a water collecting tank; 53. a water collecting sloping plate; 6. a tower body; 7. a dehydrator; 8. a central shaft; 9. and a second fan.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The embodiment 1 of the high-position water-collecting natural ventilation cooling tower comprises a tower body 6, the cross section of the tower body 6 is circular, a central vertical shaft 8 is vertically arranged at the center of the tower body 6, a dehydrator 7, a water distribution layer 2, a packing layer 3 and a water collecting device 5 are sequentially arranged in the tower body 6 from top to bottom, an air outlet is formed in the top of the tower body 6, an air inlet is formed in the tower body 6 below the water collecting device 5, a plurality of first fans 1 are arranged on the dehydrator 7, a plurality of second fans 9 are arranged at the lower part of the water collecting device 5, the second fans 9 can be arranged on the ground, and the first fans 1 and the second fans 9 are frequency-conversion controlled induced fans. The water distribution layer 2 is provided with a water distributor, the water distributor is provided with cooling water, the cooling water sequentially falls from the water distributor downwards, meanwhile, outside air enters the tower body 6 from an air inlet, the air moves upwards and sequentially passes through the water collecting device 5, the packing layer 3 and the water distributor under the combined action of the air density difference inside and outside the tower body 6, the pumping of the first fan 1 and the driving of the second fan 9, the cooling water arranged by the water distributor exchanges heat with the air in the whole moving process of the air for cooling, and then the wet hot air after absorbing heat is removed with carrying floating drops through the water remover 7 and then is scattered out from an air outlet at the top of the tower body 6.
According to the high-position water-collecting natural ventilation cooling tower, the first fan 1 and the second fan 9 are arranged, so that the flowing speed of outside air in the tower body can be increased, the ventilation capacity of the cooling tower is improved, the aerodynamic performance is increased, and the cooling performance of the cooling tower is improved; meanwhile, the lower part of the packing layer 3 is provided with the water collecting device 5 to realize high-level collection of cooling water, most of rain areas and a water collecting tank at the bottom of the tower are eliminated, and the noise value of the cooling tower is reduced.
Wherein, two pairs of first fans 1 are arranged in pairs, and a plurality of pairs of first fans 1 are arranged in a uniform radioactivity manner by using the center of the dehydrator 7. The first fan 1 is arranged above the dehydrator 7 according to engineering requirements and the distribution characteristics of the flow field in the tower, so that the air flow speed of the whole flow field of the tower body 6 is improved.
Wherein, a plurality of water collecting devices 5 are arranged in rows, and the plurality of water collecting devices 5 are oppositely arranged below the packing layer 3 by the center of the packing layer 3. In other embodiments of the present application, the water collecting devices 5 may be specifically arranged on two opposite sides, or the water collecting devices 5 may be arranged on four sides of the packing layer 3 opposite to each other in pairs, where the positions of the water collecting devices 5 are opposite to the position of the first fan 1.
Further, a plurality of water collecting devices 2 are all the same in structure, and specifically include fixed water collecting support 51 arranged at the bottom of the packing layer 3, water collecting tank 52 arranged at the bottom of the water collecting support 1 horizontally, a water collecting inclined plate 53 is arranged on the upper portion of one side edge of the water collecting tank 52, the water collecting inclined plate 53 is arranged upwards and obliquely, the inclination angle of the water collecting inclined plate 53 is 30-60 degrees, so that water drops falling from the upper portion can flow into the water collecting tank 52 through the water collecting inclined plate 53, and the water drops are prevented from falling to generate noise. Furthermore, an anti-splash layer is fixedly adhered to the water-collecting sloping plate 53 to reduce the water-splashing loss caused by the contact between the cooling water and the water-collecting sloping plate 53, and the anti-splash layer can be water-absorbing cotton felt or water-absorbing sponge and the like.
Furthermore, the water deflector 54 is provided to be inclined at the other side of the water collection tub 52, and the water deflector 54 is inclined toward the water collection sloping plate 53, so that the water deflector 54 can prevent water drops falling into the water collection tub 52 from splashing, and reduce a splashing loss when the cooling water flows into the water collection tub 52 from the water collection sloping plate 53. The specific inclination angle of the water baffle 54 is 15-45 degrees.
Wherein, the 7 bodies of dehydrator include the dewatering support of fixed connection on 1 inner walls of tower body and fix a plurality of boards that remove water of establishing on the dewatering support, and the vertical slope of board that removes water is arranged, and a plurality of board slope interval arrangements that remove water, gaseous rebound striking remove the water board, make carrying in the gas float the drop assemble and paste and remove the water board on, assemble the water droplet on removing the water board simultaneously and drop to reduce the moisture that carries in the gas. The inclination angle of the dewatering plate is specifically set to 30 to 60 degrees.
The water distribution layer 2 is provided with a water distributor, the water distributor comprises a main water tank and a water distribution main pipe fixed on a beam system, the water distribution main pipe is connected with water distribution branch pipes, the bottoms of the water distribution branch pipes are connected with spray heads with downward openings, each water distribution branch pipe is connected with a plurality of spray heads in parallel, the openings of the spray heads are downward, the spray heads of the water distribution branch pipes spray downwards, and water spray nozzles of the spray heads can form a downward water spray surface.
As shown in fig. 3, the second fans are disposed in a plurality of numbers, and the second fans are uniformly arranged at the center of the tower body and are opposite to the first fans in the up-down position.
The working principle is as follows: air exchanging heat with cooling water flows into the tower body 1 from an air inlet below the tower body 6, the air is driven to move upwards by the second fan 9, the air sequentially passes through the water collecting device 5, the packing layer 3 and the water distributor 2 from bottom to top, and after the air is sufficiently exchanged heat with the cooling water, carried floating drops are removed by the dehydrator 7, and the air is extracted from the cooling tower from an air outlet at the top of the tower body 6 by the first fan 1. After being sent into the tower body 6 by the water distribution header pipe, the cooling water is uniformly distributed to a heat exchange plane formed by the spray heads through the water distribution system, passes through the water distributor, the packing layer 3 and the water collection device 5 from top to bottom respectively, exchanges heat with air flowing in the reverse direction, falls to the surface of the water collection inclined plate 53 and flows into the water collection tank 52, and the high-level collection process of the cooling water is completed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. A natural ventilation cooling tower for high-level water collection is characterized by comprising a tower body, wherein a dehydrator, a water distribution layer, a packing layer and a water collection device are sequentially arranged in the tower body from top to bottom;
the first fans are arranged in pairs, the first fans are uniformly and radially arranged in the center of the dehydrator, and the first fans are arranged above the dehydrator;
the second fans are uniformly arranged in the center of the tower body, and the first fans and the second fans are oppositely arranged up and down.
2. A high-order natural draft cooling tower of receiving water as in claim 1, wherein a plurality of said water receiving means are of the same construction;
the water collecting device comprises a water collecting support fixedly arranged at the bottom of the filler layer and a water collecting tank horizontally arranged at the bottom of the water collecting support, and a water collecting inclined plate is arranged at the upper part of one side edge of the water collecting tank.
3. The high-order water collection natural draft cooling tower of claim 2, wherein the inclination angle of the water collection sloping plate ranges from 30 ° to 60 °, and a splash proof layer is arranged on the water collection sloping plate.
4. The natural draft cooling tower for high position water collection according to claim 2, wherein a water guard is provided at the other side of said water collection tank in an inclined manner, said water guard is inclined toward one side of said inclined water collection plate, and the inclination angle of said water guard ranges from 15 ° to 45 °.
5. The natural draft cooling tower of claim 1, wherein said dehydrator comprises a dehydrating support fixedly connected to the inner wall of the tower body and a plurality of dehydrating plates fixedly disposed on the dehydrating support, said dehydrating plates being vertically and obliquely arranged.
6. A high-level natural draft cooling tower according to claim 5, wherein the angle of inclination of said moisture removal panel is in the range of 30 ° to 60 °.
7. The natural draft cooling tower of claim 1, wherein the water distribution layer is provided with a water distributor, the water distributor comprises a main water tank and a water distribution main pipe fixed on the beam system, the water distribution main pipe is connected with water distribution branch pipes, the bottoms of the water distribution branch pipes are connected with nozzles with downward openings, the water distribution branch pipes are communicated with a water distribution main pipe, and the water distribution main pipe is connected with the outside of the circulating water system tower.
8. The high-order natural draft cooling tower of receiving water of claim 1, wherein said first fan and said second fan are frequency conversion controlled induced draft fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395217.9A CN112556450B (en) | 2020-12-03 | 2020-12-03 | High-order natural draft cooling tower of receiving water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395217.9A CN112556450B (en) | 2020-12-03 | 2020-12-03 | High-order natural draft cooling tower of receiving water |
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| Publication Number | Publication Date |
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| CN112556450A CN112556450A (en) | 2021-03-26 |
| CN112556450B true CN112556450B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011395217.9A Active CN112556450B (en) | 2020-12-03 | 2020-12-03 | High-order natural draft cooling tower of receiving water |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438725A (en) * | 2013-09-10 | 2013-12-11 | 天津道俊包装制品销售有限公司 | Water cooling tower |
| CN104296555A (en) * | 2014-09-24 | 2015-01-21 | 天津天宗化工设备有限公司 | Plate type water-saving air cooler |
| CN108225043A (en) * | 2018-02-02 | 2018-06-29 | 山东大学 | Can disappear the filler of longitudinal vortex and high position receipts water cooling tower |
| CN208547264U (en) * | 2018-04-20 | 2019-02-26 | 西安华江环保科技股份有限公司 | A kind of force ventilation counter-flow cooling tower evaporation loss reduction device |
| CN212030266U (en) * | 2020-03-19 | 2020-11-27 | 宁夏海盛实业有限公司 | Novel energy-efficient cooling tower |
| CN111609728A (en) * | 2020-05-25 | 2020-09-01 | 江苏省同远节能科技有限公司 | Efficient heat exchange type cooling circulating water system and working method thereof |
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