CN203534247U - Wet cooling tower with air distribution pore plate - Google Patents
Wet cooling tower with air distribution pore plate Download PDFInfo
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- CN203534247U CN203534247U CN201320723832.7U CN201320723832U CN203534247U CN 203534247 U CN203534247 U CN 203534247U CN 201320723832 U CN201320723832 U CN 201320723832U CN 203534247 U CN203534247 U CN 203534247U
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- air distribution
- orifice plate
- distribution orifice
- cooling tower
- perforate
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Abstract
The utility model discloses a wet cooling tower with an air distribution pore plate, which includes a tower cylinder, wherein the air distribution pore plate is arranged on the tower cylinder, and divides the lower part zone of fillers into a rain zone and a fresh air zone positioned above and under the air distribution pore plate respectively; the height H of an air inlet of the wet cooling tower is 1-1.5 times of the designed height of the air inlet described in DL/T5339-2006 Hydraulic Engineering Design Specifications on Thermal Power Plant; the edge height h of the air distribution pore plate is 0.1-0.5 time of H, and volume of the rain zone is equal to that of the rail zone calculated as per the DL/T5339-2006 Hydraulic Engineering Design Specifications on Thermal Power Plant. The wet cooling tower with the air distribution pore plate enables plenty of fresh air to enter a center filler zone, optimizes flow of fresh air entering fillers at different zones, optimizes heat and mass transferring performance, improves the heat and mass transferring characteristic and cooling efficiency of the cooling tower.
Description
Technical field
The utility model relates to energy and power engineering engineering field, refers more particularly to a kind of wet cooling tower with air distribution orifice plate for large thermal power plant and nuclear power plant.
Background technology
The cooling tower that uses thermal power plant and nuclear power plant to use at present, bottom natural ventilates.Recirculated water enters cooling tower filler layer position and flows downward, and air upwards flows from bottom air inlet mouth, and the heat of absorption cycle water completes the process of heat and mass transfer, and circulating water temperature is reduced.
Along with the construction of China's economic development, newly-built power supply project and the construction of the little new unit of upper large pressure, China main force generating set is from the 300MW unit of the nineties in last century, develops into take the present situation that 600MW and 1000MW grade unit be the main force now.According to < < Chinese Nuclear Power Long-and Medium-term Development planning > >, China surpasses 5,000 hundred million yuan of nuclear power stations in 58 gigawatt grades of coastal construction by investment in 15 years.The capacity of unit is larger, and the volume of cooling tower is also larger, and the diameter of air inlet is over hundred meters.
Along with the increase of air inlet diameter, the possibility that fresh air (dry air that water capacity is smaller) enters into tower centre is just more and more less, causes the filler heat and mass of tower center position to worsen, and has a strong impact on the overall performance of tower.
Chinese patent 200910014931.6, fresh air supply system for cooling tower, has announced a kind of new style blowing guide structure, can make tower centre pass into a small amount of fresh air.But because guide duct is arranged limited and is very easily subject to wind direction impact, effect is limited.
Chinese patent 201320192675.1, high-order water collector and the cooling tower that comprises this device, announced a kind of high-order water collector, fully phased out the rain belt of traditional cooling tower, the cold wind that enters filler is all fresh dry air, only relies on packing area heat and mass.But owing to having cancelled rain belt, the large heavy discount of heat-transfer effect.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of wet cooling tower with air distribution orifice plate is provided, according to filler region difference, provide suitable fresh air (dry air that water capacity is smaller), can improve the cooling effectiveness of cooling tower.
For achieving the above object, the utility model adopts following technical proposals:
A kind of wet cooling tower with air distribution orifice plate, comprise tower cylinder, on tower cylinder, be provided with air distribution orifice plate, air distribution orifice plate is separated into rain belt and fresh air district by filler lower area, rain belt and fresh air district lay respectively at the upper and lower of air distribution orifice plate, and the air inlet height H of described wet cooling tower is according to 1 ~ 1.5 times of < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > > design air inlet height; Brim height h=0.1 ~ the 0.5H of air distribution orifice plate.
The volume of described rain belt equates with the volume that calculates rain belt according to < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > >.
The longitudinal cross-section of described air distribution orifice plate is middle low, the spill air distribution orifice plate that edge is high, and the surface of its inclination and the angle between horizontal plane are θ
1=5 ~ 30 °.
The longitudinal cross-section of described air distribution orifice plate is middle high, the convex air distribution orifice plate that edge is low, and the surface of its inclination and the angle between horizontal plane are θ
2=5 ~ 30 °.
On described spill air distribution orifice plate or convex air distribution plate, some perforates are all set or crack, described perforate or crack for arbitrary shape, and whole percent opening (being the ratio that perforated area accounts for the described air distribution orifice plate gross area) is between 0.05 ~ 0.8.
Described perforate or crack all adopt annular concentric setting on spill air distribution orifice plate or convex air distribution plate, and on same ring, be arranged with the perforate of some same intervals settings or crack.
On the spill air distribution orifice plate of described annular concentric setting or convex air distribution plate, all the perforate on different rings or the quantity of cracking are served as reasons and are gradually reduced more from the inside to the outside.
Described perforate or the top of cracking are provided with rain-proof shed and dash limit, and dash limit is vertically arranged at perforate or the top, edge of cracking, rain-proof shed be arranged at perforate or crack directly over, and by dash limit as lower support.
The upper hose periphery of the center of described spill air distribution orifice plate is provided with center downcomer.
The external margin place of described convex air distribution orifice plate evenly arranges 6 ~ 20 downcomers and a circle retaining ring, and downcomer is positioned at retaining ring inner side, and retaining ring circularizes the external margin place that is vertically arranged at convex air distribution orifice plate.
In the utility model, the specific requirement of air distribution orifice plate is as follows:
Spill air distribution orifice plate, middle low, edge is high, angle θ
1=5 ~ 30 °; Convex air distribution orifice plate, middle high, edge is low, angle θ
2=5 ~ 30 °.The main cause that is designed to spill or convex is to be beneficial to draining.
Perforate on orifice plate or the arbitrary shapes such as can be circle, rectangle, polygon, annular that cracks, whole percent opening (perforated area accounts for the ratio of the air distribution orifice plate gross area) is between 0.05 ~ 0.8.
The perforate mode of air distribution orifice plate is close in outer dredging, that is: near air distribution panel edges place, partially perforation rate is low, and scope is 0.05 ~ 0.1; Near air distribution plate center, go out local percent opening high, scope is 0.7 ~ 0.8.
There are two kinds of forms in the perforate of air distribution orifice plate: 1) directly perforate on air distribution orifice plate, recirculated water can drip from orifice plate.2) for preventing that recirculated water from dripping from tapping, be provided with rain-proof shelter and dash limit.
With the wet cooling tower structure of air distribution orifice plate, can send to a large amount of fresh air (dry air that water capacity is smaller) to centre of cooling column region filler above, augmentation of heat transfer and mass transport process, significantly improve the cooling tower effect of cooling tower.
For ease of the draining of air distribution orifice plate, take in design following measure:
Upper hose periphery at spill air distribution orifice plate cooling tower arranges center downcomer.
At convex air distribution orifice plate cooling tower, the external margin place of air distribution orifice plate arranges 6 ~ 20 downcomers and a circle retaining ring.
Compared with the prior art, the utlity model has following advantage:
This wet cooling tower with air distribution orifice plate, installs spill or convex air distribution orifice plate in cooling tower rain belt, filler lower area is divided into rain belt and fresh air district two parts.The angle of the recessed or epirelief of spill or convex air distribution orifice plate is 5 ~ 30 °, and perforate or slot opening form are close in outer dredging.Can make so a large amount of fresh airs enter packing area, center, optimize the flow of the fresh air that enters zones of different filler, optimize heat and mass transfer performance, improve Heat and Mass Transfer Characteristics and the cooling effectiveness of cooling tower.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structural representation;
Fig. 2 is embodiment 2 structural representations;
Fig. 3 is with rain-proof shed and dash limit air distribution orifice plate embodiment;
Fig. 4 is the spill wind distributing hole plate structure schematic diagram of embodiment 1;
Fig. 5 is the convex air distribution plate structure schematic diagram of embodiment 2;
11-tower cylinder wherein; 12-filler; 13-rain belt; 14-air distribution orifice plate; 15-upper hose; 16-center downcomer; 17-fresh air district; 18-wind distributing hole; 19-rain-proof shed; 20-dash limit; 21-downcomer; 22-retaining ring.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As Fig. 1, Fig. 3, shown in Fig. 4, a kind of wet cooling tower with air distribution orifice plate, comprise tower cylinder 11, on tower cylinder 11, be provided with filler 12 and air distribution orifice plate 14, air distribution orifice plate 14 is separated into 13He fresh air district, rain belt 17 by filler 12 lower areas, 13He fresh air district, rain belt 17 lays respectively at the upper of air distribution orifice plate 14, below, the air inlet height H of described wet cooling tower is according to 1 ~ 1.5 times of < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > > design air inlet height, brim height h=0.1 ~ the 0.5H of air distribution orifice plate 14.
The volume of rain belt 13 equates with the volume that calculates rain belt according to < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > >.
The longitudinal cross-section of air distribution orifice plate 14 is middle low, the spill air distribution orifice plate that edge is high, and the surface of its inclination and the angle between horizontal plane are θ
1=5 ~ 30 °.
Some perforates are all set on spill air distribution orifice plate 14 or crack (being wind distributing hole 18), described perforate or the arbitrary shapes such as can be circle, rectangle, polygon, annular that cracks, and whole percent opening be wind distributing hole 18 gross areas account for described air distribution orifice plate 14 gross areas ratio between 0.05 ~ 0.8.
Perforate or crack all adopt annular concentric setting on spill air distribution orifice plate, and on same ring, be arranged with the perforate of some same intervals settings or crack.
On the spill air distribution orifice plate of annular concentric setting, all the perforate on different rings or the quantity of cracking are served as reasons and are gradually reduced more from the inside to the outside.That is: near air distribution panel edges place, partially perforation rate (, in air distribution orifice plate local area, wind distributing hole 18 areas account for the ratio of air distribution orifice plate local area) is low, and scope is 0.05 ~ 0.1; Near air distribution plate center, go out local percent opening high, scope is 0.7 ~ 0.8.
There are two kinds of forms in the perforate of air distribution orifice plate 14: 1) directly perforate on air distribution orifice plate 14, recirculated water can drip from orifice plate.2) for preventing that recirculated water from dripping from tapping, perforate or the top of cracking are provided with rain-proof shed 19 and dash limit 20, dash limit 20 is vertically arranged at perforate or the edge top of cracking, rain-proof shed 19 be arranged at perforate or crack directly over, and by dash limit 20 as lower support.Fresh air upwards enters tower cylinder 11 from wind distributing hole 18.
Embodiment 2:
As Fig. 2, Fig. 3, shown in Fig. 4, a kind of wet cooling tower with air distribution orifice plate, comprise tower cylinder 11, on tower cylinder 11, be provided with filler 12 and air distribution orifice plate 14, air distribution orifice plate 14 is separated into 13He fresh air district, rain belt 17 by filler 12 lower areas, 13He fresh air district, rain belt 17 lays respectively at the upper of air distribution orifice plate 14, below, the air inlet height H of described wet cooling tower is according to 1 ~ 1.5 times of < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > > design air inlet height, brim height h=0.1 ~ the 0.5H of air distribution orifice plate 14.
The volume of rain belt 13 equates with the volume that calculates rain belt according to < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > >.
The longitudinal cross-section of air distribution orifice plate 14 is middle high, the convex air distribution orifice plate that edge is low, and the surface of its inclination and the angle between horizontal plane are θ
2=5 ~ 30 °.
Some perforates are all set on convex air distribution plate or crack (being wind distributing hole 18), described perforate or the arbitrary shapes such as can be circle, rectangle, polygon, annular that cracks, and whole percent opening be wind distributing hole area account for the described air distribution orifice plate gross area ratio between 0.05 ~ 0.8.
Perforate or crack all adopt annular concentric setting on convex air distribution plate, and on same ring, be arranged with the perforate of some same intervals settings or crack.
On the convex air distribution plate of annular concentric setting, all the perforate on different rings or the quantity of cracking are served as reasons and are gradually reduced more from the inside to the outside.That is: near air distribution orifice plate 14 edges, partially perforation rate (, in air distribution orifice plate local area, wind distributing hole 18 areas account for the ratio of air distribution orifice plate local area) is low, and scope is 0.05 ~ 0.1; High near air distribution orifice plate 14 center partially perforation rates, scope is 0.7 ~ 0.8.
There are two kinds of forms in the perforate of air distribution orifice plate 14: 1) directly perforate on air distribution orifice plate 114, recirculated water can drip from orifice plate.2) for preventing that recirculated water from dripping from tapping, perforate or the top of cracking are provided with rain-proof shed 19 and dash limit 20, dash limit 20 is vertically arranged at perforate or the edge top of cracking, rain-proof shed 19 be arranged at perforate or crack directly over, and by dash limit 20 as lower support.Fresh air upwards enters tower cylinder 11 from wind distributing hole 18.
The external margin place of convex air distribution orifice plate evenly arranges 6 ~ 20 downcomers 21 and a circle retaining ring 22, and downcomer 21 is positioned at retaining ring 22 inner sides, and retaining ring 22 circularizes the external margin place that is vertically arranged at convex air distribution orifice plate.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (10)
1. the wet cooling tower with air distribution orifice plate, comprise tower cylinder, it is characterized in that, on tower cylinder, be provided with air distribution orifice plate, air distribution orifice plate is separated into rain belt and fresh air district by filler lower area, rain belt and fresh air district lay respectively at the upper and lower of air distribution orifice plate, and the air inlet height H of described wet cooling tower is according to 1 ~ 1.5 times of < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > > design air inlet height; Brim height h=0.1 ~ the 0.5H of air distribution orifice plate; The volume of described rain belt equates with the volume that calculates rain belt according to < < DL/T 5339-2006 thermal power plant Code for Hydraulic Designing > >.
2. the wet cooling tower with air distribution orifice plate as claimed in claim 1, is characterized in that, the longitudinal cross-section of described air distribution orifice plate is middle low, the spill air distribution orifice plate that edge is high, and the surface of its inclination and the angle between horizontal plane are θ
1=5 ~ 30 °.
3. the wet cooling tower with air distribution orifice plate as claimed in claim 2, it is characterized in that, on described spill air distribution orifice plate, some perforates are set or crack, described perforate or crack for arbitrary shape, and whole percent opening be perforate or the area that cracks account for the described air distribution orifice plate gross area ratio between 0.05 ~ 0.8.
4. the wet cooling tower with air distribution orifice plate as claimed in claim 3, is characterized in that, described perforate or crack adopt annular concentric setting on spill air distribution orifice plate, and on same ring, be arranged with the perforate of some same intervals settings or crack;
On the spill air distribution orifice plate of described annular concentric setting, all the perforate on different rings or the quantity of cracking are served as reasons and are gradually reduced more from the inside to the outside.
5. the wet cooling tower with air distribution orifice plate as claimed in claim 2, is characterized in that, the upper hose periphery of the center of described spill air distribution orifice plate is provided with center downcomer.
6. the wet cooling tower with air distribution orifice plate as claimed in claim 1, is characterized in that, the longitudinal cross-section of described air distribution orifice plate is middle high, the convex air distribution orifice plate that edge is low, and the surface of its inclination and the angle between horizontal plane are θ
2=5 ~ 30 °.
7. the wet cooling tower with air distribution orifice plate as claimed in claim 6, it is characterized in that, on described convex air distribution plate, some perforates are set or crack, described perforate or crack for arbitrary shape, and whole percent opening be perforated area account for the described air distribution orifice plate gross area ratio between 0.05 ~ 0.8.
8. the wet cooling tower with air distribution orifice plate as claimed in claim 7, it is characterized in that, described perforate or crack all adopt annular concentric setting on spill air distribution orifice plate or convex air distribution plate, and on same ring, be arranged with the perforate of some same intervals settings or crack;
On the spill air distribution orifice plate of described annular concentric setting or convex air distribution plate, all the perforate on different rings or the quantity of cracking are served as reasons and are gradually reduced more from the inside to the outside.
9. the wet cooling tower with air distribution orifice plate as claimed in claim 6, it is characterized in that, the external margin place of described convex air distribution orifice plate evenly arranges 6 ~ 20 downcomers and a circle retaining ring, and downcomer is positioned at retaining ring inner side, and retaining ring circularizes the external margin place that is vertically arranged at convex air distribution orifice plate.
10. the wet cooling tower with air distribution orifice plate as described in claim 3 or 7, it is characterized in that, described perforate or the top of cracking are provided with rain-proof shed and dash limit, dash limit is vertically arranged at perforate or cracks top, edge, rain-proof shed be arranged at perforate or crack directly over, and by dash limit as lower support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723832.7U CN203534247U (en) | 2013-11-15 | 2013-11-15 | Wet cooling tower with air distribution pore plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723832.7U CN203534247U (en) | 2013-11-15 | 2013-11-15 | Wet cooling tower with air distribution pore plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534247U true CN203534247U (en) | 2014-04-09 |
Family
ID=50420445
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723832.7U Expired - Fee Related CN203534247U (en) | 2013-11-15 | 2013-11-15 | Wet cooling tower with air distribution pore plate |
Country Status (1)
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| CN (1) | CN203534247U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557718A (en) * | 2013-11-15 | 2014-02-05 | 山东大学 | Wet cooling tower with air distribution hole plate |
| CN112484522A (en) * | 2020-11-18 | 2021-03-12 | 暨南大学 | Central air-supplementing wet cooling tower and cooling method |
| CN112944943A (en) * | 2021-02-01 | 2021-06-11 | 山东大学 | Active extra-large-scale dry and wet rain area cooling tower of adjusting dry area coverage area |
-
2013
- 2013-11-15 CN CN201320723832.7U patent/CN203534247U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557718A (en) * | 2013-11-15 | 2014-02-05 | 山东大学 | Wet cooling tower with air distribution hole plate |
| CN112484522A (en) * | 2020-11-18 | 2021-03-12 | 暨南大学 | Central air-supplementing wet cooling tower and cooling method |
| CN112944943A (en) * | 2021-02-01 | 2021-06-11 | 山东大学 | Active extra-large-scale dry and wet rain area cooling tower of adjusting dry area coverage area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20161115 |