CN104567526A - Natural ventilation dry cooling tower with bypass air doors - Google Patents
Natural ventilation dry cooling tower with bypass air doors Download PDFInfo
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- CN104567526A CN104567526A CN201510000951.3A CN201510000951A CN104567526A CN 104567526 A CN104567526 A CN 104567526A CN 201510000951 A CN201510000951 A CN 201510000951A CN 104567526 A CN104567526 A CN 104567526A
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Abstract
The invention relates to a natural ventilation dry cooling tower with bypass air doors. The natural ventilation dry cooling tower comprises air cooling radiators (1), a tower body (3) and a seal (4) between the air cooling radiator top and a tower body. The air cooling radiators (1) is arranged on the outside of the lower portion of the tower body (3) vertically, a plurality of bypass air doors (2) are added on the cooling tower and are arranged on the seal (4) between the air cooling radiator top and the tower body or arranged on the tower body (3), and the bypass air doors (2) has functions of opening and closing. By means of the dry cooling tower, when the surrounding temperature is low, the bypass air doors are opened to introduce cold air directly to reduce drawing force of the dry cooling tower, and accordingly, the air volume passing through the air cooling radiators is reduced, freeze proofing is achieved, the water temperature unevenness is small, the safe operation water temperature is low, the freeze proof performance of the air cooling radiators in the low-temperature environment in cold regions can be improved, and the power generation unit operation coal consumption is reduced.
Description
Technical field
The present invention relates to a kind of gravity-flow ventilation dry cooling tower, be mainly used in thermal power plant indirect air cooling system.
Background technology
Thermal power plant indirect air cooling system is used widely.Gravity-flow ventilation dry cooling tower is the pith of indirect air cooling system, its primarily of air cooling heat radiator, tower body and between air cooling heat radiator top and tower body close form.Gravity-flow ventilation dry cooling tower operation principle is: first air enters and be arranged vertically on outside tower or the horizontally disposed air cooling heat radiator at tower bottom, carries out heat exchange with the hot water in air cooling heat radiator heat-transfer pipe; Enter in tower body after the temperature rising of air, the draft then utilizing tower body height and atmospheric density difference to produce is discharged the top exit of the air after heating by tower body outside tower again.Gravity-flow ventilation dry cooling tower has that operating cost is low, noiselessness and by advantages such as large wind effect are little, but under the winter low temperature environment of north cold area, its air cooling heat radiator resistance to frost is poor.
The gravity-flow ventilation dry cooling tower used in engineering is at present after environment temperature is lower than 0 DEG C, and the ventilation reducing cooling tower by turning down air cooling heat radiator inlet louver increase windage is carried out antifreeze to air cooling heat radiator.But air cooling heat radiator air feed shutter window size is large, quantity is many, inevitable existence because manufacturing, alignment error produces closes the defects such as inconsistent, local blade distortion as blade, under the effect of the gravity-flow ventilation dry cooling tower draft do not weakened, increased by the air intake unevenness of shutter, each air cooling heat radiator water temperature unevenness is caused also to increase, as water temperature controls too low, water temperature unevenness can not be overcome, then easily cause air cooling heat radiator local overcooling to freeze.For overcoming water temperature unevenness in Practical Project, often need the operation water temperature improving air cooling heat radiator, but so improve generating set operation back pressure, add coal consumption, sacrifice economy.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide one can make generating set in the winter time with lower, more economical back pressure operation, and the gravity-flow ventilation dry cooling tower that resistance to frost is good.
The object of the present invention is achieved like this: a kind of gravity-flow ventilation dry cooling tower arranging bypass air door, comprise air cooling heat radiator, tower body and close between air cooling heat radiator top and tower body, air cooling heat radiator is arranged vertically on tower body lower outside, it is characterized in that: some bypass air doors set up by described cooling tower, described bypass air door is arranged between air cooling heat radiator top and tower body and closes, or described bypass air door is arranged on tower body, described bypass air door possesses opening and closing function.
The present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, and described bypass air door is shutter form.
The present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, and described bypass air door is sliding door form.
The present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, and several bypass air doors described are closed in uniform arranged in form between air cooling heat radiator top and tower body.
The present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, and several bypass air doors described are uniform arranged in form on tower body.
The present invention is application like this: when environment temperature is high or thermic load is large, close all bypass air doors, and the outer cold wind of tower is all by entering in tower after air cooling heat radiator heat exchange; When environment temperature lower than 0 DEG C and air cooling heat radiator leaving water temperature lower than the water temperature that generating set economical operation back pressure is corresponding time; part or all of unlatching bypass air door; the outer cold wind of a part of tower is made directly to enter in tower by bypass air door; reduce the draft of tower; the air quantity being reduced by air cooling heat radiator, to control air cooling heat radiator leaving water temperature, realizes the anti-frost protection of air cooling heat radiator.
Advantage of the present invention is:
1) essence opening bypass air door minimizing tower ventilation is adopted to be reduce the draft of tower, the mode that air cooling heat radiator air feed shutter window increase tower resistance reduces air quantity is closed relative to adopting, the air intake of air cooling heat radiator evenly, air cooling heat radiator resistance to frost at low ambient temperatures can be improved (when bypass air door is shutter form, also the situation of leaking out can be there is in off position, the cooling performance of dry cooling tower summer high temperature period can be reduced in theory, but this inleakage is very limited relative to total ventilation of cooling tower, and bypass air door size and quantity are all much smaller than air cooling heat radiator air feed shutter window, sealing property more easily controls, so inleakage can be less, negligible on the cooling capacity impact of dry cooling tower, and when environment temperature is lower, when air cooling heat radiator needs anti-frost protection, for opening and using, there is not impact of leaking out in bypass air door).
2) when environment temperature is extremely low, in air cooling heat radiator air feed shutter window complete shut-down situation, open bypass air door, reduce tower draft, largely can reduce the inleakage of air cooling heat radiator air feed shutter window, the resistance to frost of air cooling heat radiator under the low temperature environment of pole can be improved.
3) the gravity-flow ventilation dry cooling tower arranging bypass air door can safe operation under the water temperature that generating set economical operation back pressure is corresponding, decreases generating set and runs coal consumption, have economy.
Accompanying drawing explanation
Fig. 1 be embodiment 1(bypass air door that the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door be arranged between air cooling heat radiator top and tower body close).
Fig. 2 is that the layout that in embodiment 1, bypass air door is closed between air cooling heat radiator top and tower body is illustrated.
Fig. 3 is that example 2(bypass air door that the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door to be arranged on above air cooling heat radiator on tower body).
Fig. 4 is the layout signal of bypass air door on tower body in embodiment 2.
Fig. 5 is the signal of shutter form bypass air door structure.
Fig. 6 is the signal of sliding door form bypass air door structure.
In figure:
Air cooling heat radiator 1
Bypass air door 2
Tower body 3
4 are closed between air cooling heat radiator top and tower body
Framework 5
Control lever 6
Blade 7
Doorframe 8
Push rod 9
Door 10.
Detailed description of the invention
Embodiment 1:
Fig. 1 be embodiment 1(bypass air door that the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door be arranged between air cooling heat radiator top and tower body close).Fig. 2 is that the layout that in embodiment 1, bypass air door is closed between air cooling heat radiator top and tower body is illustrated.As depicted in figs. 1 and 2, the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, comprise air cooling heat radiator 1, bypass air door 2, tower body 3 and close 4 between air cooling heat radiator top and tower body, air cooling heat radiator is arranged vertically on tower body lower outside, and bypass air door 2 is arranged between air cooling heat radiator top and tower body and closes on 4.Described bypass air door possesses opening and closing function.As shown in Figure 2, several bypass air doors are closed on 4 in uniform arranged in form between air cooling heat radiator top and tower body.
Embodiment 2:
Fig. 3 is that example 2(bypass air door that the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door to be arranged on above air cooling heat radiator on tower body).Fig. 4 is the layout signal of bypass air door on tower body in embodiment 2.As shown in Figure 3 and Figure 4, the present invention arranges the gravity-flow ventilation dry cooling tower of bypass air door, comprise air cooling heat radiator 1, bypass air door 2, tower body 3 and close 4 between air cooling heat radiator top and tower body, air cooling heat radiator is arranged vertically on tower body lower outside, bypass air door 2 is arranged on the tower body 3 above air cooling heat radiator 1, and described bypass air door possesses opening and closing function.As shown in Figure 4.Several bypass air doors are uniform arranged in form on tower body 3.
Bypass air door can be shutter form as shown in Figure 5, also can be sliding door form as shown in Figure 6.
Claims (5)
1. one kind arranges the gravity-flow ventilation dry cooling tower of bypass air door, comprise air cooling heat radiator (1), tower body (3) and close (4) between air cooling heat radiator top and tower body, air cooling heat radiator is arranged vertically on tower body (3) lower outside, it is characterized in that: some bypass air doors (2) set up by described cooling tower, described bypass air door (2) is arranged between air cooling heat radiator top and tower body to be closed on (4), or described bypass air door (2) is arranged on tower body (3), described bypass air door (2) possesses opening and closing function.
2. a kind of gravity-flow ventilation dry cooling tower arranging bypass air door according to claim 1, is characterized in that: described bypass air door (2) is shutter form.
3. a kind of gravity-flow ventilation dry cooling tower arranging bypass air door according to claim 1, is characterized in that: described bypass air door (2) is sliding door form.
4. a kind of gravity-flow ventilation dry cooling tower arranging bypass air door according to Claims 2 or 3, is characterized in that: it is upper in uniform arranged in form that several bypass air doors (2) described close (4) between air cooling heat radiator top and tower body.
5. a kind of gravity-flow ventilation dry cooling tower arranging bypass air door according to Claims 2 or 3, is characterized in that: several bypass air doors (2) described are upper in uniform arranged in form at tower body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000951.3A CN104567526A (en) | 2015-01-05 | 2015-01-05 | Natural ventilation dry cooling tower with bypass air doors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000951.3A CN104567526A (en) | 2015-01-05 | 2015-01-05 | Natural ventilation dry cooling tower with bypass air doors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104567526A true CN104567526A (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510000951.3A Pending CN104567526A (en) | 2015-01-05 | 2015-01-05 | Natural ventilation dry cooling tower with bypass air doors |
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| Country | Link |
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| CN (1) | CN104567526A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716441A (en) * | 2015-12-10 | 2016-06-29 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation air-cooling tower with vertically-arranged radiator and adjustable effective draft force |
| CN107328292A (en) * | 2017-08-15 | 2017-11-07 | 中国电力工程顾问集团西北电力设计院有限公司 | Gravity-flow ventilation dry cooling tower self-supporting broadening platform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6099988A (en) * | 1983-11-04 | 1985-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | Dry and wet type cooling tower |
| US20100018237A1 (en) * | 2008-07-28 | 2010-01-28 | Hunton Energy Holdings, LLC | Low Water Consumption Cooling Tower for Gasification Plants |
| CN102353278A (en) * | 2011-08-13 | 2012-02-15 | 双良节能系统股份有限公司 | Dry cooling tower integrated by natural ventilation and mechanical ventilation |
| CN202599208U (en) * | 2012-04-05 | 2012-12-12 | 黑龙江龙煤矿业集团股份有限公司双鸭山分公司虹焱热电有限公司 | Adjustable roller blind wind shield board of cooling tower |
| CN203744759U (en) * | 2014-03-03 | 2014-07-30 | 中国电力工程顾问集团东北电力设计院 | Natural-ventilation indirect air cooling tower bypass ventilating device |
| CN203810952U (en) * | 2014-04-16 | 2014-09-03 | 山西科工龙盛科技有限公司 | Indirect air cooling light steel-frame structure tower capable of achieving water conservation and freezing resistance |
| CN204421734U (en) * | 2015-01-05 | 2015-06-24 | 双良节能系统股份有限公司 | The gravity-flow ventilation dry cooling tower of bypass air door is set |
-
2015
- 2015-01-05 CN CN201510000951.3A patent/CN104567526A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6099988A (en) * | 1983-11-04 | 1985-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | Dry and wet type cooling tower |
| US20100018237A1 (en) * | 2008-07-28 | 2010-01-28 | Hunton Energy Holdings, LLC | Low Water Consumption Cooling Tower for Gasification Plants |
| CN102353278A (en) * | 2011-08-13 | 2012-02-15 | 双良节能系统股份有限公司 | Dry cooling tower integrated by natural ventilation and mechanical ventilation |
| CN202599208U (en) * | 2012-04-05 | 2012-12-12 | 黑龙江龙煤矿业集团股份有限公司双鸭山分公司虹焱热电有限公司 | Adjustable roller blind wind shield board of cooling tower |
| CN203744759U (en) * | 2014-03-03 | 2014-07-30 | 中国电力工程顾问集团东北电力设计院 | Natural-ventilation indirect air cooling tower bypass ventilating device |
| CN203810952U (en) * | 2014-04-16 | 2014-09-03 | 山西科工龙盛科技有限公司 | Indirect air cooling light steel-frame structure tower capable of achieving water conservation and freezing resistance |
| CN204421734U (en) * | 2015-01-05 | 2015-06-24 | 双良节能系统股份有限公司 | The gravity-flow ventilation dry cooling tower of bypass air door is set |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716441A (en) * | 2015-12-10 | 2016-06-29 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation air-cooling tower with vertically-arranged radiator and adjustable effective draft force |
| CN107328292A (en) * | 2017-08-15 | 2017-11-07 | 中国电力工程顾问集团西北电力设计院有限公司 | Gravity-flow ventilation dry cooling tower self-supporting broadening platform |
| CN107328292B (en) * | 2017-08-15 | 2023-07-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Self-supporting widening platform of natural ventilation dry cooling tower |
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Application publication date: 20150429 |