CN112556451A - Natural ventilation cooling tower and ventilation method thereof - Google Patents
Natural ventilation cooling tower and ventilation method thereof Download PDFInfo
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- CN112556451A CN112556451A CN202011398174.XA CN202011398174A CN112556451A CN 112556451 A CN112556451 A CN 112556451A CN 202011398174 A CN202011398174 A CN 202011398174A CN 112556451 A CN112556451 A CN 112556451A
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- water distribution
- cooling tower
- water
- tower
- fans
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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
- 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
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a natural ventilation cooling tower which comprises a tower body, wherein a water distribution layer and a packing layer are sequentially arranged in the tower body from top to bottom, an air outlet is formed in the top of the tower body, a water collecting tank is arranged at the lower part of the packing layer, an air inlet is formed in the tower body below the packing layer, and a plurality of fans are arranged at the upper part of a dehydrator. The natural draft cooling tower of the invention 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 and a ventilation method thereof.
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 low efficiency of the cooling tower can increase the temperature of the circulating water, the increase of the circulating water temperature can reduce the vacuum of the condenser, the working efficiency of the turboset is reduced, the output of equipment is reduced, the coal consumption of power generation is increased, and the heat efficiency of the turboset is influenced.
However, the existing natural ventilation cooling tower has the defects that external side wind completely depends on the pressure difference between the inside and the outside of the cooling tower as power and circulating water for heat exchange, and the flowing resistance of the inflowing air is increased after passing through a rain area and a filling area, so that 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, to solve the technical problems: the natural draft cooling tower in the prior art has weak ventilation capacity and weak aerodynamic performance, and the cooling performance of the cooling tower is obviously reduced;
it is another object of the present invention to provide a method of ventilating a natural draft cooling tower.
The technical scheme of the natural draft cooling tower of the invention is as follows:
the utility model provides a natural draft cooling tower, includes the tower body, water distribution layer and packing layer have set gradually from top to bottom in the tower body, the top of tower body is equipped with the air outlet, the lower part of packing layer is provided with the catch basin, be equipped with the air intake on the tower body of packing layer below, the upper portion of dehydrator is equipped with a plurality of fans.
Preferably, the water distribution layer is provided with a dehydrator at the upper part, and the fan is arranged on the dehydrator.
As a preferred scheme, the fan is arranged above the dehydrator according to engineering requirements and flow field distribution characteristics in the tower.
Preferably, a plurality of fans are arranged on different sections in the tower body;
preferably, the filler layer is provided with a filler, and the filler and the fan are arranged in an up-and-down opposite manner.
As a preferred scheme, a water distribution pipe is arranged on the water distribution layer, and the water distribution pipe and the fan are arranged in an up-and-down opposite mode.
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.
As a preferred scheme, the draught fan is a frequency conversion controlled draught fan.
A method of ventilating a natural draft cooling tower, comprising: a plurality of fans are arranged at the upper part of the water distribution layer of the natural draft cooling tower, and can be arranged on the same section or different sections in the tower body;
the fans are arranged opposite to the water distributors on the water distribution layer from top to bottom;
the fans and the filler of the filler layer are arranged oppositely up and down.
Has the advantages that: the natural ventilation cooling tower is provided with the fan on the water distribution layer, and the 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 descends from the water distributor downwards in sequence, meanwhile, outside air enters the tower body from the air inlet, the air moves upwards and sequentially passes through the packing layer and the water distributor under the combined action of air density difference inside and outside the tower body, pumping of the fan and pressure difference inside and outside the tower body, the cooling water arranged by the water distributor exchanges heat with the air in the whole moving process of the air and is cooled, the cooling water is blown out from the air outlet at the top of the tower body, and the cooling water falling from the packing layer falls into the water collecting pool. Set up the fan and can improve the flow velocity of outside air in the tower body, improve the ventilation capacity of cooling tower, increase aerodynamic, improved the cooling performance of cooling tower, increase the cooling load of cooling tower. The cooling load of the cooling tower can be even doubled. The natural draft cooling tower of this application not only can be used for the natural draft cooling tower of new project construction usefulness, and can be used for the transformation project of the natural draft cooling tower of having built now, and application scope is wide.
Drawings
FIG. 1 is a schematic structural view of a natural draft cooling tower of the present invention;
fig. 2 is a schematic diagram of the arrangement of fans in an embodiment of a natural draft cooling tower.
In the figure: 1. a fan, 2 and a tower body; 3. preparing a water layer; 4. a filler layer.
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.
A natural draft cooling tower according to an embodiment 1 of the present invention, as shown in fig. 1, includes a tower body 2, wherein a cross section of the tower body 2 is circular; the tower body 2 is internally provided with a dewatering layer, a water distribution layer 3 and a packing layer 4 from top to bottom in sequence, the dewatering layer is provided with a dehydrator, the top of the tower body 2 is provided with an air outlet, the tower body 2 below the packing layer 4 is provided with an air inlet, the upper part of the water distribution layer 3 is provided with a plurality of fans 1, and concretely, in the embodiment, the fans 1 are arranged on the upper part of the dehydrator. The water distribution layer 3 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 2 from an air inlet, under the combined action of air density difference inside and outside the tower body 2 and pressure difference driving inside and outside the tower body by pumping of a fan 1, the air moves upwards and sequentially passes through a packing layer and the water distributor, the cooling water provided by the water distributor exchanges heat with the air in the whole moving process of the air for cooling, and then the fan removes carrying floating drops of the wet hot air after absorbing heat through a water remover and then the wet hot air is scattered out from an air outlet at the top of the tower body 2. The natural draft cooling tower of this application utilizes the fan can improve the flow velocity of outside air in the tower body, improves the ventilation capacity of cooling tower, increases aerodynamic, has improved the cooling performance of cooling tower.
Wherein, the fan is arranged above the dehydrator according to engineering requirements and flow field distribution characteristics in the tower. So as to increase the air flow speed of the whole flow field in the tower body and increase the aerodynamic performance in the whole tower body.
Alternatively, in other embodiments of the present application, the plurality of fans are arranged on different cross sections within the tower body; the fans are uniformly arranged on the upper part of the dehydrator. The fans can be uniformly dispersed on the upper part of the dehydrator, so that the dynamic property of the air in the tower body is improved.
Referring to FIG. 2, an embodiment of a cross arrangement of fans is shown; the arrangement mode of fan in this application includes but not limited to the cross arrangement, and the fan can realize multiple arrangement mode according to the engineering needs.
The fans can be arranged differently according to different arrangement modes of the fillers of the filler layers, namely, the fans are also arranged non-uniformly when the fillers are not uniformly arranged. And increasing the arrangement number of fans or using fans with larger diameters at the place with large water spraying area of the filler. In the specific embodiment of this application, the filler with the fan is relative arrangement from top to bottom.
Wherein, the fan can carry out different arrangements according to the difference of trickle density, and when inhomogeneous water distribution promptly, the fan is also inhomogeneous to arrange. When the water spraying density is high, the arrangement number of the fans is increased or the fans with larger diameters are used. In the embodiment of this application, be equipped with spray header on the water distribution layer, spray header and fan relative arrangement from top to bottom.
The application, the draught fan adopts frequency conversion control's draught fan.
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.
A ventilation method of a natural ventilation cooling tower is characterized in that a plurality of fans are arranged at the upper part of a water distribution layer of the natural ventilation cooling tower, and the fans can be arranged on the same section or different sections in a tower body; the fans are arranged opposite to the water distributor on the water distribution layer up and down; the fans and the filler of the filler layer are arranged oppositely up and down.
The fans can be arranged differently according to different arrangement modes of the fillers of the filler layer, namely when the fillers are non-uniformly arranged, the fans are also non-uniformly arranged; and increasing the arrangement number of fans or using fans with larger diameters at the place with large water spraying area of the filler. The fans can be arranged differently according to different water spraying densities, namely, the fans are also arranged non-uniformly during non-uniform water distribution; when the water spraying density is high, the arrangement number of the fans is increased or the fans with larger diameters are used.
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 (9)
1. The utility model provides a natural draft cooling tower, characterized by, includes the tower body, water distribution layer and packing layer have set gradually from top to bottom in the tower body, the top of tower body is equipped with the air outlet, the lower part of packing layer is provided with the catch basin, be equipped with the air intake on the tower body of packing layer below, the upper portion of dehydrator is equipped with a plurality of fans.
2. The natural draft cooling tower of claim 1, wherein a dehydrator is provided on an upper portion of said water distribution layer, and said blower is provided on said dehydrator.
3. A natural draft cooling tower according to claim 1, wherein the fan is located above the water trap according to engineering requirements and flow field distribution characteristics within the tower.
4. A natural draft cooling tower according to claim 1, wherein a plurality of said fans are disposed on different cross sections within said tower body;
the fans are uniformly arranged on the upper part of the dehydrator.
5. The natural draft cooling tower of claim 1, wherein said filler layer is provided with a filler, said filler being disposed opposite said fan from above and below.
6. The natural draft cooling tower of claim 1, wherein a water distribution pipe is provided on said water distribution layer, said water distribution pipe and said fan being disposed opposite to each other in the vertical direction.
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 outer part of the circulating water system tower.
8. The natural draft cooling tower of claim 1, wherein said fan is a variable frequency controlled induced draft fan.
9. A method of ventilating a natural draft cooling tower according to any one of claims 1 to 8, comprising:
a plurality of fans are arranged at the upper part of the water distribution layer of the natural draft cooling tower, and can be arranged on the same section or different sections in the tower body;
the fans are arranged opposite to the water distributors on the water distribution layer from top to bottom;
the fans and the filler of the filler layer are arranged oppositely up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398174.XA CN112556451A (en) | 2020-12-03 | 2020-12-03 | Natural ventilation cooling tower and ventilation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011398174.XA CN112556451A (en) | 2020-12-03 | 2020-12-03 | Natural ventilation cooling tower and ventilation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112556451A true CN112556451A (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011398174.XA Pending CN112556451A (en) | 2020-12-03 | 2020-12-03 | Natural ventilation cooling tower and ventilation method thereof |
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| CN (1) | CN112556451A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503751A (en) * | 2021-05-28 | 2021-10-15 | 淄博英诺威圣节能科技有限公司 | Capacity increasing structure of natural draft cooling tower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204757733U (en) * | 2015-06-12 | 2015-11-11 | 黎建良 | Ultra -low noise matrix fan cooling tower |
| CN206803798U (en) * | 2017-02-15 | 2017-12-26 | 浙江春旭铝业有限公司 | A kind of Homogeneouslly-radiating formula cooling tower for the processing of aluminium ladder section |
| CN210874668U (en) * | 2019-08-26 | 2020-06-30 | 安徽华塑股份有限公司 | Atomizing equipment for calcium carbide furnace flue gas treatment |
| CN111895810A (en) * | 2020-09-07 | 2020-11-06 | 广州览讯科技开发有限公司 | Fan induced draft counter-flow open type cooling tower |
| CN112484526A (en) * | 2020-11-27 | 2021-03-12 | 山东大学 | Natural ventilation cooling tower with synergistic effect of internal booster fan and comprehensive synergistic technology |
-
2020
- 2020-12-03 CN CN202011398174.XA patent/CN112556451A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204757733U (en) * | 2015-06-12 | 2015-11-11 | 黎建良 | Ultra -low noise matrix fan cooling tower |
| CN206803798U (en) * | 2017-02-15 | 2017-12-26 | 浙江春旭铝业有限公司 | A kind of Homogeneouslly-radiating formula cooling tower for the processing of aluminium ladder section |
| CN210874668U (en) * | 2019-08-26 | 2020-06-30 | 安徽华塑股份有限公司 | Atomizing equipment for calcium carbide furnace flue gas treatment |
| CN111895810A (en) * | 2020-09-07 | 2020-11-06 | 广州览讯科技开发有限公司 | Fan induced draft counter-flow open type cooling tower |
| CN112484526A (en) * | 2020-11-27 | 2021-03-12 | 山东大学 | Natural ventilation cooling tower with synergistic effect of internal booster fan and comprehensive synergistic technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503751A (en) * | 2021-05-28 | 2021-10-15 | 淄博英诺威圣节能科技有限公司 | Capacity increasing structure of natural draft cooling tower |
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Application publication date: 20210326 |