CN105698209B - A kind of cooling tower warm wind heat utilization system indirectly - Google Patents
A kind of cooling tower warm wind heat utilization system indirectly Download PDFInfo
- Publication number
- CN105698209B CN105698209B CN201610221590.XA CN201610221590A CN105698209B CN 105698209 B CN105698209 B CN 105698209B CN 201610221590 A CN201610221590 A CN 201610221590A CN 105698209 B CN105698209 B CN 105698209B
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- Prior art keywords
- cooling tower
- air
- bellows
- indirect cooling
- warm wind
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of cooling tower warm wind heat utilization system, including indirect cooling tower and air intake header indirectly；Some air outlets are symmetrically opened up above the heat transfer zone of indirect cooling tower, the outside of air outlet sets annular to take bellows, and annular takes bellows and the outer side seal of indirect cooling tower to be connected；Annular takes the outlet of bellows to tap into wind header, and the warm wind of indirect cooling tower is sent into steam air heater by blower fan and heated again after air intake header.The present invention, by the use of warm wind in indirect cooling tower as the wind regime into steam air heater, can reduce the amount of drawing gas of steam air heater, lift steam turbine operation efficiency during Unit Low operation, can also lift exhaust gas temperature reduction air preheater and block and corrode；And it is circular layout and takes bellows that air intake can be made more stable.When being run during low temperature, gross coal consumption rate 0.5g/ (kwh) can be reduced.
Description
【Technical field】
The invention belongs to heat energy reutilization technology field, is related to a kind of cooling tower warm wind heat utilization system indirectly.
【Background technology】
In whole heat power generating system, major part that steam turbine cold source energy is accounted in all losses, Turbine Cold Junction system
Although the energy that working medium is carried in system accounts for greatly more than 55% of heat in whole thermodynamic cycle very much, it is difficult to because energy level is relatively low
Being utilized can only be in the form of used heat outside discharge system.For indirect cooler group, the recirculated water of steam turbine is by flowing into
Air cooled during indirect cooling tower is cold, heated air is directly discharged in environment, if it is possible to is added using part
Used heat can in the air of heat lifts the cycle efficieny of whole unit.
The relatively low Generator Set of winter environment can typically be furnished with steam air heater equipment, be enabled when environment temperature is relatively low warm
Wind device is to cold air heating to more than 20 DEG C, and its thermal source is generally from auxiliary vapour or five sections are drawn gas.Drawn gas using auxiliary vapour or five sections
Heating cold wind thermal loss of steam turbine will certainly be made to increase, if can using in indirect cooling tower by the hot-air of circulating water heating as wind
Source can then utilize used heat part, reduce in steam turbine with respect to the steam consumption of high-quality, reduce gross coal consumption rate.
【The content of the invention】
It is an object of the invention to solve the above problems, there is provided one kind is using hot-air in indirect cooling tower as inlet air of boiler
Source, lift the indirect cooling tower warm wind heat utilization system of winter low temperature phase steam air heater EAT.
To achieve these goals, the present invention is achieved using following technical scheme：
A kind of cooling tower warm wind heat utilization system, including indirect cooling tower and air intake header indirectly；Indirect cooling tower changes
Some air outlets are symmetrically opened up above hot-zone, the outside of air outlet sets annular to take bellows, and annular takes bellows and indirect cooling tower
Outer side seal connection；Annular takes the outlet of bellows to tap into wind header, and the warm wind of indirect cooling tower is after air intake header, by wind
Machine is sent into steam air heater and heated again.
Further improve of the invention is：
The air outlet is uniformly distributed circumferentially.
The air outlet opens up 8 vertically.
A diameter of 6~7m of the air outlet.
The air outlet is located above heat transfer zone at 8~15m.
Angle between the air outlet and level side's line is 70 °~90 °.
It is 5~7m that the annular, which takes the width between the external diameter of bellows and internal diameter, is highly 7~8m.
Compared with prior art, the invention has the advantages that：
The present invention during Unit Low is run using warm wind in indirect cooling tower as the wind regime for entering steam air heater, can be with
The amount of drawing gas of steam air heater is reduced, lifts steam turbine operation efficiency, exhaust gas temperature can be also lifted and reduce air preheater blocking and corruption
Erosion；And it is circular layout and takes bellows that air intake can be made more stable, flow field in tower is influenceed smaller.In unit in higher load Duan Yun
During row, 14 DEG C high than external air temperature or so of the air themperature in indirect cooling tower, therefore enter the Air Temperature of steam air heater
Degree can at least improve more than 10 DEG C, when being run during low temperature, can reduce gross coal consumption rate 0.5g/ (kwh), lifting operation peace
Quan Xing.
【Brief description of the drawings】
Fig. 1 is the overall structure diagram of the present invention.
Wherein, 1- air intakes header；The indirect cooling towers of 2-；3- annulars take bellows.
【Embodiment】
The present invention is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, the present invention includes indirect cooling tower 2 and air intake header 1；8 above the heat transfer zone of indirect cooling tower 2~
8 air outlets symmetrically are opened up at 15m, and air outlet is uniformly distributed circumferentially, a diameter of 6~7m of air outlet, with level side's line
Between angle be 70 °~90 °；The outside of air outlet sets annular to take bellows 3, and annular takes the outer of bellows 3 and indirect cooling tower 2
Side seal connects, and it is 5~7m that annular, which takes the width between the external diameter and internal diameter of bellows 3, is highly 7~8m；Annular takes bellows 3
Outlet taps into wind header 1, and the warm wind of indirect cooling tower 2 is sent into steam air heater by blower fan and heated again after air intake header 1.
Air becomes warm wind after the heat-transfer surface heat exchange below indirect cooling tower and entered in tower, symmetrical above indirect cooling tower heat transfer zone
Eight air outlets are taken, set an annular to take bellows outside air outlet, inlet air of boiler pipeline access annular is taken in bellows again by wind
Warm wind in air intake header is delivered in steam air heater and heated by machine, finally delivers to boiler.
The principle and the course of work of the present invention：
The present invention is delivered in steam air heater by blower fan using the warm air in indirect cooling tower as wind regime is taken and is used as inlet air of boiler
Warm wind reutilization system, when winter temperature is relatively low, the air in indirect cooling tower has received the heating of recirculated water, because
Air themperature in this indirect cooling tower is higher than environment temperature, that is to say, that is ensureing the premise of identical boiler inlet temperature
Under, steam air heater can consume less steam to heat air intake；Or on the premise of identical steam consumption, it can obtain more
Good cold air heating effect, therefore this take that wind mode can reduce thermal loss of steam turbine, lifting exhaust gas temperature prevents high sulphur content from firing
The blocking and corrosion of coal unit air preheater.
Indirect cooling tower warm wind heat utilization system is cold end waste heat utilization system, and particularly one kind is used in combination with steam air heater
Indirect cooling tower Waste Heat Reuse warm air system.Present invention can apply to the large-scale indirect cooling generator group with steam air heater,
The wind-warm syndrome of steam air heater is lifted into by using the hot-air in indirect cooling tower, reduces the amount of drawing gas when steam air heater puts into operation, drop
Low thermal loss of steam turbine rate, reduce gross coal consumption rate.Cooling tower and steam air heater cooperation and air used heat indirectly of the invention are sharp again
With, using the warm wind in indirect cooling tower be boiler to wind regime, reduce steam air heater consumption vapour.
The technological thought of above content only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every to press
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, claims of the present invention is each fallen within
Protection domain within.
Claims (4)
1. a kind of cooling tower warm wind heat utilization system indirectly, it is characterised in that including indirect cooling tower (2) and air intake header (1)；
Some air outlets are symmetrically opened up above the heat transfer zone of indirect cooling tower (2), the outside of air outlet sets annular to take bellows (3), ring
Shape takes bellows (3) and the outer side seal of indirect cooling tower (2) to be connected；Annular takes the outlet of bellows (3) to tap into wind header (1),
The warm wind of cooling tower (2) is connect after air intake header (1), is sent into steam air heater by blower fan and heated again；Air outlet edge week
To being uniformly distributed；The air outlet opens up 8 vertically；It is 5 that the annular, which takes the width between the external diameter and internal diameter of bellows (3),
~7m, it is highly 7~8m.
2. cooling tower warm wind heat utilization system indirectly according to claim 1, it is characterised in that the diameter of the air outlet
For 6~7m.
3. cooling tower warm wind heat utilization system indirectly according to claim 1, it is characterised in that the air outlet, which is located at, to be changed
Above hot-zone at 8~15m.
4. cooling tower warm wind heat utilization system indirectly according to claim 1, it is characterised in that the air outlet and level
Angle between square line is 70 °~90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221590.XA CN105698209B (en) | 2016-04-11 | 2016-04-11 | A kind of cooling tower warm wind heat utilization system indirectly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610221590.XA CN105698209B (en) | 2016-04-11 | 2016-04-11 | A kind of cooling tower warm wind heat utilization system indirectly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105698209A CN105698209A (en) | 2016-06-22 |
| CN105698209B true CN105698209B (en) | 2017-12-01 |
Family
ID=56218668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610221590.XA Expired - Fee Related CN105698209B (en) | 2016-04-11 | 2016-04-11 | A kind of cooling tower warm wind heat utilization system indirectly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105698209B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043875A (en) * | 2019-08-26 | 2020-04-21 | 华北电力大学 | System for recycling hot air in cooling tower between power station |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053898B1 (en) * | 1980-12-10 | 1985-05-29 | Imperial Chemical Industries Plc | Cooling towers |
| JP2003004388A (en) * | 2001-06-19 | 2003-01-08 | Shuzo Nomura | Heat pump type air conditioner and method for generating cold and hot air |
| CN101050924A (en) * | 2007-05-15 | 2007-10-10 | 株洲市兴民科技有限公司 | Method for improving noise of off tower air flow and its air cooling tower |
| CN201935592U (en) * | 2010-08-23 | 2011-08-17 | 李宁 | Wind-control air-cooling tower |
| CN202630721U (en) * | 2011-11-23 | 2012-12-26 | 王卫良 | Air cooling tower environmental wind management utilization system |
| CN202630102U (en) * | 2012-06-11 | 2012-12-26 | 中国电力工程顾问集团西北电力设计院 | Intercooling tower hot-air recycling system in thermal power plant |
| CN205481103U (en) * | 2016-04-11 | 2016-08-17 | 西安西热节能技术有限公司 | Indirect cooling tower warm braw thermal utilization system |
-
2016
- 2016-04-11 CN CN201610221590.XA patent/CN105698209B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053898B1 (en) * | 1980-12-10 | 1985-05-29 | Imperial Chemical Industries Plc | Cooling towers |
| JP2003004388A (en) * | 2001-06-19 | 2003-01-08 | Shuzo Nomura | Heat pump type air conditioner and method for generating cold and hot air |
| CN101050924A (en) * | 2007-05-15 | 2007-10-10 | 株洲市兴民科技有限公司 | Method for improving noise of off tower air flow and its air cooling tower |
| CN201935592U (en) * | 2010-08-23 | 2011-08-17 | 李宁 | Wind-control air-cooling tower |
| CN202630721U (en) * | 2011-11-23 | 2012-12-26 | 王卫良 | Air cooling tower environmental wind management utilization system |
| CN202630102U (en) * | 2012-06-11 | 2012-12-26 | 中国电力工程顾问集团西北电力设计院 | Intercooling tower hot-air recycling system in thermal power plant |
| CN205481103U (en) * | 2016-04-11 | 2016-08-17 | 西安西热节能技术有限公司 | Indirect cooling tower warm braw thermal utilization system |
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| Publication number | Publication date |
|---|---|
| CN105698209A (en) | 2016-06-22 |
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