CN101435663B - Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower - Google Patents
Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower Download PDFInfo
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- CN101435663B CN101435663B CN2008102075505A CN200810207550A CN101435663B CN 101435663 B CN101435663 B CN 101435663B CN 2008102075505 A CN2008102075505 A CN 2008102075505A CN 200810207550 A CN200810207550 A CN 200810207550A CN 101435663 B CN101435663 B CN 101435663B
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- atomizing
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- swirling flow
- eddy
- induced draft
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Abstract
The invention relates to a countercurrent heat transfer eddy-flow secondary atomizing induced draft cooling tower, wherein an intake pipe is arranged above the tower body and connected with a horizontal water distribution tube, an eddy-flow induced draft atomizing spray head is connected to the horizontal water distribution tube, a secondary atomizing rectifier is arranged under the eddy-flow induced draft atomizing spray head, an eddy-flow cavity of the eddy-flow induced draft atomizing spray head is communicated in turn with an eddy-flow shrinkage cavity, a converging jet tube and a nozzle outlet from above to below, nozzle outlet is connected to a divergent jet tube, a nozzle induced draft pore and a water shielding edge are arranged at the periphery of the nozzle outlet; an eddy-flow intake pipe is connected to the side wall of the eddy-flow cavity in a tangent direction; the second atomizing rectifier is arranged below the eddy-flow induced draft atomizing spray head, and a hollowed-out honeycomb panel with a positive quadrilateral shape or a positive hexagon shape is made of stainless steel sheet, aluminium sheet or engineering plastic. Due to adopting eddy-flow atomizing, the hot water falls down from the upper part of the cooling tower for cooling, so that the flowing heat transfer mode has greater heat transfer temperature difference than that of upward injection carried out by the spray head under identical operating condition. The countercurrent heat transfer eddy-flow secondary atomizing induced draft cooling tower has stable cooling effect, and can improve cooling efficiency by more than 30 percent.
Description
Technical field
The present invention relates to a kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower, be specifically related to a kind ofly do not have filler, the swirling flow atomizer sprays from top to bottom and strengthen the cooling tower of atomizing heat and mass, be applied to the water cooling equipment of central air-conditioning, chemical industry and power plant by the secondary-atomizing rectifier.
Background technology
Cooling tower is as a kind of device of getting rid of used heat, be widely used in the industrial production and central air conditioning equipment in, no matter freeze or heat supply will produce a large amount of useless used heat, the cooling tower that often adopts various types with this part waste heat discharge in atmosphere.What existing cooling tower without filling material adopted usually is that atomizer is arranged in the cooling tower bottom, by spraying upwards behind the water distributor of bottom, makes air gain of heat humidification take away the heat of hot water hot water, reaches hot water cooling purpose with this.But the cooling tower of this kind form has following shortcoming:
1. the hot water particle size that ejects from atomizer usually differs, thereby has influence on the specific area of whole atomized water;
2. owing to be upwards to spray from the cooling tower bottom, the diabatic process of water droplet be at first with advance the following current of tower air, after arriving the top, water droplet falls by the gravity effect, this moment and direction of air adverse current, the heat and mass pattern of adverse current has long droplet stroke after the first following current of this kind, but carry out the mixed flow heat and mass owing to advance the air while and the water droplet up and down of tower, enthalpy difference power weakens the whole heat transfer temperature difference of influence;
3. especially when high spray density, the water droplet and just directly fallen into collecting-tank of being cooled that falls from above from the water droplet of nozzle ejection is mixed, thus make the hot water of considerable part through the whole cooling range of heat exchange influence;
4. in the existing cooling tower without filling material, it is comparatively serious to exist wall stream usually, thereby causes the decline of the cooling effectiveness of cooling tower integral body.
Summary of the invention
The invention discloses a kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower, this cooling tower can pass through secondary-atomizing, with the diameter of even water droplet, improves the uniformity of trickle; Overcome the hot water particle size that the prior art atomized spray goes out and differ, the mixed flow heat and mass influences whole heat transfer temperature difference and cooling range, thereby causes degradation drawback under the whole cooling effectiveness of cooling tower.The present invention is because hot water swirling flow atomizing is cooled off the whereabouts from the cooling tower top, opposite with the flow direction of air, under identical operating mode, have than shower nozzle and upwards spray bigger heat transfer temperature difference, and the whole cooling effect of countercurrent heat-transfer is stable, low noise not only, and strengthened the effect of heat and mass, improved the cooling effectiveness of cooling tower.
A kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower, be provided with collecting-tank in the tower body lower end, be provided with the cold water drainpipe at the collecting-tank bottom centre position, water inlet pipe is arranged on the tower body top, be connected with the horizontal water distributor that is arranged on the tower body top simultaneously, be provided with the air draft tube in the tower body upper end, in the air draft tube, be provided with air-introduced machine, between air draft tube bottom and horizontal water distributor, be provided with water collection device and comprise tower body, the collecting-tank top is provided with uniform wind deflector, it is characterized in that: be connected with swirling flow air inducing atomizer on horizontal water distributor, be provided with the secondary-atomizing rectifier below swirling flow air inducing atomizer; Described its structure of swirling flow air inducing atomizer is: the swirling flow chamber is communicated with swirling flow contraction chamber, convergent jet pipe, jet expansion from top to bottom successively, and jet expansion is connected with divergent nozzle, is provided with nozzle air inducing hole around the jet expansion and hides the water edge; The sidewall in swirling flow water inlet pipe and swirling flow chamber is tangential direction and connects; Described secondary-atomizing rectifier is positioned at swirling flow air inducing atomizer below 100-500mm, and adopting thickness is stainless steel substrates, aluminium flake or the engineering plastics of 10-30mm, makes the cellular board of square or regular hexagon hollow out.Further the water droplets particle diameter is reduced by this secondary-atomizing rectifier, increase specific area, enhance heat.
Described swirling flow air inducing atomizer is that left swirling flow air inducing atomizer and right swirling flow air inducing atomizer are alternately arranged.
The present invention is owing to alternately be furnished with left swirling flow air inducing atomizer and right swirling flow air inducing atomizer on horizontal water distributor, eliminated local air " cavity ", prevent the short circuit phenomenon of air, designed swirling flow air inducing atomizer, has good atomizing effect, since adopted hot water swirling flow atomizing to fall from the cooling of cooling tower top, opposite with the flow direction of air, make this flowing heat transfer mode under identical operating mode, have and upwards spray bigger heat transfer temperature difference than shower nozzle.The whole cooling effect of countercurrent heat-transfer of the present invention is stable, has strengthened the effect of heat and mass, low noise, and the cooling effectiveness that has improved cooling tower reaches more than 30%, at spray density 10t/m
3The time, cooling effectiveness can reach more than 70%.
Description of drawings
Fig. 1 is a kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower structural representation;
Fig. 2 is left swirling flow air inducing atomizer structure schematic diagram;
Fig. 3 is a secondary-atomizing rectifier regular hexagon Openworks shape structural representation;
Fig. 4 is a secondary-atomizing rectifier square Openworks shape structural representation.
1. cold water drainpipe, 2. collecting-tank, 3. uniform wind deflector, 4. tower body, 5. secondary-atomizing rectifier, 6. swirling flow air inducing atomizer, 7. horizontal water distributor, 8. water inlet pipe, 9. water collection device, 10. air-introduced machine, 11. the air draft tube, 12. swirling flow chambeies, 13. swirling flow contraction chambers, 14. the convergent jet pipe, 15. jet expansions, 16. divergent nozzles, 17. nozzle air inducing hole, 18. hide water edge, 19. swirling flow water inlet pipes.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail, but present embodiment is not limited to the present invention, the similar structural change of every employing the present invention all should be listed protection scope of the present invention in.
A kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower, its structure is made up of cold water drainpipe 1, collecting-tank 2, uniform wind deflector 3, tower body 4, secondary-atomizing rectifier 5, swirling flow air inducing atomizer 6, horizontal water distributor 7, water inlet pipe 8, water collection device 9, air-introduced machine 10 and air draft tube 11 as shown in Figure 1.
Be provided with collecting-tank 2 in tower body 4 lower ends, the collecting-tank top is provided with uniform wind deflector 3, be provided with cold water drainpipe 1 at collecting-tank 2 bottom centre positions, water inlet pipe 8 is arranged on the tower body top, be connected with the horizontal water distributor 7 that is arranged on the tower body top simultaneously, on horizontal water distributor 7, be connected with swirling flow air inducing atomizer 6, below swirling flow air inducing atomizer, be provided with secondary-atomizing rectifier 5, be provided with air draft tube 11 in tower body 4 upper ends, in air draft tube 11, be provided with air-introduced machine 10, on air draft tube 11 bottoms and horizontal water distributor 7, be provided with water collection device 9.When reducing whole cooling tower air drag, reduce percentage of water loss; Water collection device 9 adopts the 3 D stereo water collection device.
The uniform wind deflector 3 of present embodiment is provided with four layers, every layer of uniform wind deflector is made up of shield in the tower and the outer swash plate of tower, the length of the outer swash plate of tower from bottom to top each layer increases 10-30mm, the air intake angle of the outer swash plate of tower is by 0 ° of beginning of horizontal sextant angle, from bottom to top each layer increases by 15 °, and shield length increases 10-20mm from top to down successively in the tower.
Secondary-atomizing rectifier 5 is positioned at swirling flow air inducing atomizer 6 below 100-500mm, and adopting thickness is stainless steel substrates, aluminium flake or the engineering plastics of 10-30mm, can be made into the cellular board of regular hexagon hollow out, as shown in Figure 3; Also can be made into the cellular board of square hollow out, as shown in Figure 4; Further the water droplets particle diameter is reduced by this secondary-atomizing rectifier 5, increase specific area, enhance heat.
Swirling flow air inducing atomizer 6 its structures are as shown in Figure 2: swirling flow chamber 12 is communicated with swirling flow contraction chamber 13, convergent jet pipe 14, jet expansion 15 from top to bottom successively, jet expansion 15 is connected with divergent nozzle 16, is provided with nozzle air inducing hole 17 around the jet expansion 15 and hides water along 18; Nozzle air inducing hole 17 diameters are 1-3mm, quantity is 12-60, the air inducing flow direction is vertical with nozzle current emission direction, in order to guarantee that the atomizing uniformity prevents that the hollow phenomenon of nozzle from taking place, hiding water highly is that 3-10mm is with the different diffusion angle of correspondence along 18, its diffusion angle is 0-20 ° and introduces air capacity with the different atomizing secondary of correspondence that jet expansion 15 is with nozzle air inducing hole 17 and hide water along 18 combination control diffusion angle and trickle uniformities, corresponding different water quality; Swirling flow air inducing atomizer 6 materials adopt engineering plastics or stainless steel.
The sidewall in swirling flow water inlet pipe 19 and swirling flow chamber 12 is tangential direction and connects.Swirling flow air inducing atomizer 6 is that left swirling flow air inducing atomizer and right swirling flow air inducing atomizer are alternately arranged.Described left swirling flow air inducing atomizer is meant that swirling flow water inlet pipe 19 is tangential direction from the left side wall in swirling flow chamber 12 with the swirling flow chamber and is connected, overlooking current is the clockwise direction rotation, described right swirling flow air inducing atomizer is meant that swirling flow water inlet pipe 19 is tangential direction from the right side wall in swirling flow chamber 12 with the swirling flow chamber and is connected, overlook current and be rotation counterclockwise, two kinds of shower nozzles are alternately installed, to eliminate local air " cavity ", prevent the short circuit phenomenon of air.
During work, hot water enters left-handed or dextrorotation swirling flow air inducing atomizer 6 by water inlet pipe 8, horizontal water distributor 7 through swirling flow water inlet pipe 19, after the hot water of swirling flow water inlet pipe tangentially enters swirling flow chamber 12, the hot water of import department has bigger radius of curvature, along with the center flow of hot water to swirling flow chamber 12, according to conservation of angular momentum principle, radius is more little, its tangential velocity is big more, have higher rotary speed when entering convergent jet pipe 14, divergent nozzle 16, higher tangent line rotary speed helps water droplet and overcomes surface tension and form less atomizing particle size.Go out the interruption-forming negative pressuren zone at jet pipe, nozzle air inducing hole 17 has been designed in the lower end, benefit wind by the bottom, strengthen the atomizing of water droplet, the wind of air-introduced machine 10 cools off the water droplet of atomizing fast, simultaneously because the air-flow direction in nozzle air inducing hole 17 is to center air inducing, intersect with the water outlet direction, augmentation of heat transfer exchange on the one hand makes the part water droplet drop on the central area on the other hand, has alleviated atomizer hollow phenomenon.Uniform wind deflector 3 has strengthened the air mass flow in cooling tower centre, makes that the air quantity of cooling tower central area and peripheral regions is balanced more, has strengthened the effect of heat and mass, has improved cooling effectiveness.For the gentle water ratio of the diffusion angle of more effectively controlling hot water, around jet expansion, arranged screening water along 18, atomization angle can be controlled by hiding water along 18, and the generation of wall flow phenomenon can be reduced.
Claims (2)
1. reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower, be provided with collecting-tank (2) in tower body (4) lower end, be provided with cold water drainpipe (1) at collecting-tank (2) bottom centre position, water inlet pipe (8) is arranged on the tower body top, be connected with the horizontal water distributor (7) that is arranged on the tower body top simultaneously, be provided with air draft tube (11) in tower body (4) upper end, in air draft tube (11), be provided with air-introduced machine (10), between air draft tube (11) bottom and horizontal water distributor (7), be provided with water collection device (9), the collecting-tank top is provided with uniform wind deflector (3), it is characterized in that: on horizontal water distributor (7), be connected with swirling flow air inducing atomizer (6), below swirling flow air inducing atomizer, be provided with secondary-atomizing rectifier (5); Its structure of described swirling flow air inducing atomizer (6) is: swirling flow chamber (12) are communicated with swirling flow contraction chamber (13), convergent jet pipe (14), jet expansion (15) from top to bottom successively, jet expansion (15) is connected with divergent nozzle (16), and jet expansion (15) is provided with nozzle air inducing hole (17) all around and hides water along (18); The sidewall in swirling flow water inlet pipe (19) and swirling flow chamber (12) is tangential direction and connects; Described secondary-atomizing rectifier (5) is positioned between the 100-500mm of swirling flow air inducing atomizer (6) below, and adopting thickness is stainless steel substrates, aluminium flake or the engineering plastics of 10-30mm, makes the cellular board of square or regular hexagon hollow out.
2. a kind of reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower according to claim 1 is characterized in that: described swirling flow air inducing atomizer (6) is that left swirling flow air inducing atomizer and right swirling flow air inducing atomizer are alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102075505A CN101435663B (en) | 2008-12-23 | 2008-12-23 | Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102075505A CN101435663B (en) | 2008-12-23 | 2008-12-23 | Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower |
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| Publication Number | Publication Date |
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| CN101435663A CN101435663A (en) | 2009-05-20 |
| CN101435663B true CN101435663B (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102075505A Expired - Fee Related CN101435663B (en) | 2008-12-23 | 2008-12-23 | Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846460B (en) * | 2010-06-21 | 2012-07-04 | 中广核工程有限公司 | Nuclear grade cooling tower |
| CN104567451A (en) * | 2014-06-25 | 2015-04-29 | 陆洪新 | Countercurrent rotating spraying cooling tower |
| CN107367176A (en) * | 2017-07-20 | 2017-11-21 | 国粤（深圳）科技投资有限公司 | Cooling tower with fair water cone |
| CN107401933B (en) * | 2017-07-20 | 2020-01-03 | 国粤（深圳）科技投资有限公司 | Circular counter-flow cooling tower |
| CN107796238B (en) * | 2017-11-30 | 2023-06-23 | 四川理工学院 | Air distribution structure of bottom blowing type cooling tower |
| CN112484525B (en) * | 2020-11-18 | 2021-08-24 | 暨南大学 | Natural ventilation and forced ventilation coupling wet cooling tower and cooling method |
| CN112964119B (en) * | 2021-04-28 | 2022-06-07 | 湖州中赢节能科技有限公司 | Multi-stage circulating jet spraying device for packless cooling tower |
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Owner name: ENTION (SHANGHAI) ENERGY-SAVING TECHNOLOGY CO., LT Free format text: FORMER OWNER: SHANGHAI ENTION COOLING TOWER CO., LTD. Effective date: 20120409 |
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Effective date of registration: 20120409 Address after: 201417 Shanghai Kegong coastal industrial zone of Fengxian District Zhelin Town Road, Chu Hua Road No. 58 Patentee after: EN Xun (Shanghai) energy saving Technology Co., Ltd. Address before: 201417 No. 1206, engineering road, Shanghai Patentee before: Shanghai Ention Cooling Tower Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20131223 |