CN201787827U - Natural ventilation air cooling condenser - Google Patents
Natural ventilation air cooling condenser Download PDFInfo
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- CN201787827U CN201787827U CN2009202429410U CN200920242941U CN201787827U CN 201787827 U CN201787827 U CN 201787827U CN 2009202429410 U CN2009202429410 U CN 2009202429410U CN 200920242941 U CN200920242941 U CN 200920242941U CN 201787827 U CN201787827 U CN 201787827U
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- air cooling
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- tubes condenser
- cooling tubes
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Abstract
The utility model discloses a natural ventilation air cooling condenser, which belongs to the field of heat exchange, and particularly relates to a power plant air cooling condenser using air as a cooling medium. An existing air cooling condenser is high in power consumption, high in investment cost and poor in wind capability. The natural ventilation air cooling condenser is designed into heat exchange unit parts with vertical windward surface structures and then combined with a natural ventilation tower, thereby forming the natural ventilation air cooling condenser consisting of heat exchange components distributed around the lower portion of the ventilation tower. Dead steam enters the heat exchange parts to exchange heat with air outside a pipe to be condensed into water. The density of the air which absorbs heat is reduced to produce lift force, and the air rises to a tower top and enters high altitude in the natural ventilation tower, thereby achieving natural circulation of front and back cold-hot air of the air cooling condenser. By utilizing the air cooling condenser with the structure, the investment and the power consumption of existing direct air-cooling high platforms and fans are omitted, and the problems of direct air-cooling hot air circulation and strong wind endanger and safe and economic operation of power plants are solved, thereby reducing the energy consumption cost of the power plants.
Description
Technical field
The utility model belongs to the heat exchange field, particularly is that cooling medium directly carries out the cooling device that air cooling condenses to the power plant steam turbine exhaust steam with the air.
Background technology
Existing air-cooled type power station, it utilizes the key equipment of air setting exhaust steam in steam turbine to claim the power station air cooling device again, mainly be divided into two kinds of Direct Air-Cooled and indirect air coolings: exhaust steam in steam turbine directly enters the abbreviation Direct Air-Cooled that air cooler carries out condensation, the condensation heat of exhaust steam in steam turbine is taken to the indirect air cooling that abbreviates as that cools off in the air cooler by recirculated cooling water.
The straight air cooling in existing power station is normally with air cooling tubes condenser, air cooling tubes condenser as the 600Mw Air-cooled Unit is arranged in high more than 45 meters apart from ground, on the huge High Altitude Platform surplus the area nearly 8000 square metre, by being located at the large axial flow fan air blast vertically upward of air cooler tube bundle below, make it pass cooling tube bundle, take away the latent heat that the exhaust steam condensation in the tube bank is emitted, realize purpose with the direct condensation exhaust steam in steam turbine of air.The advantage of this arrangement is that investment is low, occupation of land is little; Shortcoming is that wind loading rating is poor, is prone to hot air circulation, causes the steam turbine decline of exerting oneself; Operation power consumption height, noise is big, and economic benefit is a little less than indirect air cooling.
Another kind of Direct Air-Cooled is with the structure of air cooling tubes condenser with the plane or the conical surface, be arranged in the gravity-flow ventilation tower (seeing Figure of description 1), utilize the hot-air density after the heat exchange to reduce, the lift that in the gravity-flow ventilation tower, produces, cold air below the extraction air cooling tubes condenser passes air cooling tubes condenser, realizes the cooling of power station steam turbine exhaust steam is condensed.The most tempting advantage of this arrangement is a power consumption of having saved the cooling blower operation, does not have noise.But there is following shortcoming:
Shortcoming is 1, and air cooling tubes condenser is arranged on the tower inner platform, and main steam range and arm are apart from the distance of steam-distributing pipe, and elbow is many, not only increases the pipeline investment, and increases the exhaust steam pipe resistance, and then reduces steam turbine and exert oneself;
Shortcoming 2 is, structure with plane, the conical surface or ladder is arranged in air cooling tubes condenser in the gravity-flow ventilation tower, owing to must reserve the space that enters of cold air below the air cooling tubes condenser, at least will be placed in the tower on the platform more than 20 meters as the height of the heavy air cooling tubes condenser of thousands of tons of of 600Mw unit, this increases the air cooling tubes condenser device naturally and supports facility, investment is installed;
Shortcoming 3 is, because the gravity-flow ventilation tower is to utilize, the density contrast of heat exchange front and back gas and the product value of the effective depth of air with density contrast, obtain to overcome the flow through driving force of air cooling tubes condenser tube bank and blind window resistance of cold air, under the just cold and hot air temperature difference certain condition, the elevational dimension of occupying of hot-air is big more, and the total life of hot-air is just big more.Because the air cooling tubes condenser setting height(from bottom) has been raised 20 meters, for guaranteeing minimum driving force, the effective depth of aeration tower also must increase by 20 meters, and this has increased the investment of aeration tower undoubtedly again;
Shortcoming 4 is that owing to want Area of bearing to reach 8000 square metres, necessary uniform a large amount of supporting member will be arranged flue gas desulfur device and fume emission device again in the air cooling tubes condenser of thousands of tons of, aeration tower, and is just very difficult.
In view of above shortcoming, so the gravity-flow ventilation air cooling tubes condenser of this class formation is never accepted by market.It is perfect that the present invention adopts following content to give.
Summary of the invention
This gravity-flow ventilation air cooling tubes condenser, connect to form air cooling condensing tube bank unit by steam inlet house steward and arm, steam-distributing pipe, condensed water collecting pipe and some finned tubes, after the heat exchanger components of air cooling tubes condenser is formed in some air cooling condensing tube banks unit, again with air duct, shutter set, form complete gravity-flow ventilation air cooling tubes condenser, it is characterized in that: form vertical air cooling condensing tube bank unit (10) by finned tube (4), the steam-distributing pipe of vertically arranging (2), the vertical condensed water collecting pipe of arranging (3) with vertical windward side; Vertically the finned tube (4) in the windward side is connected between vertical steam-distributing pipe (2) and the condensed water collecting pipe (3) with the non-horizontal mode of axis; The heat exchanger components of closing structure is formed in plurality of vertical air cooling condensing tube bank unit (10), places around aeration tower tube (8) lower end; The shutter (5) of control air quantity vertically is arranged in the inlet side of vertical air cooling condensing tube bank unit (10); Steam inlet house steward (1) and arm (9) are connected in steam-distributing pipe (2) one ends with ring-type.
When the finned tube of this gravity-flow ventilation air cooling tubes condenser was arranged in the following current condensation segment, the exhaust steam import was higher than the condensate water outlet, is beneficial to flowing out rapidly with remaining exhaust steam of condensate water; When finned tube was arranged in the reversed flow condensation section, import was lower than outlet, so that the condensate water that refluxes is by the up exhaust steam heating of import, in case air cooling tubes condenser is when temperature below 0 ℃ moves, condensate water is frozen on the tube wall.
The finned tube cross sectional shape of this gravity-flow ventilation air cooling tubes condenser can be circle, ellipse or flat pattern, when adopting cross sectional shape to be ellipse or flat pattern, major cross-sectional axis should become to be in tilted layout with horizontal plane, so that the condensate water in the pipe in time is pooled to the pipe end, to reduce the delay thickness of the low condensate water of thermal conductivity factor at the finned tube inner surface; Also make simultaneously the outer ventilation section of finned tube vertically occupy due ratio on the windward side, to reduce the air side gas-flow resistance.
The benefit that vertical tube bank unit, this gravity-flow ventilation air cooling tubes condenser windward side is arranged in around the aeration tower bottom is as follows:
1. make the cooling air flow to air cooling tubes condenser, to reduce the air cooling flow resistance with minimum energy consumption level;
2. arrange like this, air cooling tubes condenser tube bank unit just can be placed on ground, thereby make the hot-air starting altitude after the heat exchange reduce about 20 meters, thereby will make gravity-flow ventilation tower height degree reduce by 20 meters, and then reduce the aeration tower cost of investment than existing tower inner platform formula heat exchange mode;
3. air cooling tubes condenser is placed on ground, has also saved the heavy air cooling tubes condenser of thousands of tons of and be placed on 20 meters support facilities, the investment and the installation cost of member on the high platform;
4. aeration tower is interior owing to do not have existing tower inner platform formula air cooling tubes condenser and supporting member to take up room, and this space just in time can be used for arranging means of flue gas desulfurization of power plant device and fume emission device, thereby reduce power plant's plant area.
According to power plant's nature, geography, meteorological condition and air-cooled type power plant generating scale, column closure shape heat exchanger components structure is formed in vertical air cooling condensing tube bank unit can be rectangle, circle, ellipse, many prismatics etc.
This gravity-flow ventilation air cooling tubes condenser, steam inlet house steward and arm are connected in the lower end of steam-distributing pipe with ring-type.Layout will make the exhaust steam in steam turbine house steward come out from the steam turbine factory building like this, directly enter the very capable arm of circlet of flow resistance without any elbow, not only reduce the exhaust steam flow resistance, and construction and installation be also very convenient, reduce mounting cost.
Description of drawings
Accompanying drawing 1 is existing gravity-flow ventilation condenser structure chart.Among the figure:
1 main steam range;
2 steam-distributing pipes;
3 condensate water collecting pipes;
4 air cooling condensing finned tubes;
The blind window of 5 control air quantity;
6 flow into the cold air that cools off between air cooling condensing finned tube;
7 flow out between air cooling condensing finned tube, and rising in aeration tower produces the hot-air of lift;
8 aeration tower tubes, maintaining heat air space height realizes that cold air flows into the critical component of air cooling tubes condenser.
Accompanying drawing 2 and accompanying drawing 3, for the utility model designs, gravity-flow ventilation air cooling tubes condenser structural front view and A-A view.Among the figure:
1 main steam range;
2 steam-distributing pipes of vertically arranging;
The 3 condensed water collecting pipes of vertically arranging;
4 air cooling condensing finned tubes;
The shutter of 5 control air quantity;
7 flow out between air cooling condensing finned tube, and rising in aeration tower produces the hot-air of lift;
8 aeration tower tubes, maintaining heat air space height realizes that cold air flows into the critical component of air cooling tubes condenser;
9 send steam into the annular steam arm of steam-distributing pipe (2);
The 10 air cooling condensing tube bank unit of vertically arranging.
The specific embodiment
Be example with 600Mw gravity-flow ventilation air cooling tubes condenser below, the specific embodiment of the present invention is described.
1, when exporting according to ultra supercritical 600Mw unit rated power in summer, the exhaust steam total amount is per hour 1200 tons, and the air cooling tubes condenser condensation load is 2.853 * 10
9KJ/h, the air air cooling tubes condenser temperature of flowing through rises to 60 ℃ by 33 ℃, 27 ℃ of temperature rises, and needing air mass flow is 1.0567 * 10
8Kg/h, establishing hot-air, to go out the aeration tower flow velocity be maximum 6m/s, air density in the time of 60 ℃ is 1.0kg/m
3, then the aeration tower outlet diameter is: 79m.The remaining design basic data sees the following form:
Adopt the 600Mw large-scale power station gravity-flow ventilation air cooling tubes condenser of the utility model design, owing to take up an area of little, it can be built in the generator factory building A row outside fully, thereby kept the short relatively advantage of vapour house steward that existing forced ventilation direct air cooled condenser is steamed, eliminated shortcomings such as power consumption height, big, the anti-natural wind capability of influence of noise be weak.
2 according to the design basis parameter of above-mentioned gravity-flow ventilation air cooling tubes condenser and local meteorology, may report money, the specific embodiment is:
(1) design:
By overall process specialty each specialty equipment design specialist, technology Calculation specialty, craft piping design specialist, structural design specialty, civil Engineering Design specialties such as (, specialties such as electrical design specialty, instrument control and DCS system design specialist, fire-fighting, safety, environmental protection) air cooling tubes condenser tube banks design basis condition is proposed; Each specialty is carried out Preliminary design according to the Specialty Design basic condition, after the Preliminary design joint hearing is passed through; Carry out the construction drawing design and please purchase the technical conditions affirmation by joint hearing and modular system.
(2) device fabrication and installation:
The basic civil engineering of aeration tower and armamentarium, road, terrace;
Air cooling tubes condenser tube bank unit, shutter are produced by professional equipment factory, and on-the-spot assembling is in place;
The fabrication and installation of gravity-flow ventilation tower site operation;
The major diameter exhaust steam conveyance conduit and the arm that goes in ring are made and are installed by professional equipment unit's site operation;
After installing, large-scale component such as capital equipment and air cooling tubes condenser carries out vacuum system, condensate system, fire-fighting, security system, purging system, mist cooling system process pipe arrangement, blind window installation;
Electric meter, cable testing bridge are installed;
The corrosion-resistant thermal insulation construction;
Trench, terrace, road, greening, safe extinguisher, warning mark and the construction of place health;
(3) test run is debugged, is put into operation:
At first be that electric meter debugging is qualified and put into operation;
It is qualified that running device monomers such as vavuum pump, cleaning device, sprayer unit clean test run
To all and water vapour and condensate water, equipment, the pipeline that processing mediums such as fire water are relevant blow down and the leak test pressure testing qualified;
Start vavuum pump the air cooling condensing system is vacuumized, and guarantee that the vacuum leak test is qualified;
Inject low-pressure steam by professional bypass valve to part air cooling tubes condenser unit, and start condensate return system;
Start steam turbine and progressively inject exhaust steam in steam turbine, and turn off the low-pressure steam bypass valve to air cooling tubes condenser;
Progressively open big steam turbine steam flow to rated value, and finish and put into operation according to the relevant temperature of air cooling tubes condenser, pressure, flow.
This device that puts into operation winter will at first be closed shutter, according to exhaust steam flow, pressure, the air cooling tubes condenser unit aperture that quantity and finned tube and condensing water temperature are progressively regulated shutter that puts into operation, controls cooling air delivery by the DCS automatic control system well.
Claims (5)
1. gravity-flow ventilation air cooling tubes condenser, connect to form air cooling condensing tube bank unit by steam inlet house steward and arm, steam-distributing pipe, condensed water collecting pipe and some finned tubes, after the heat exchanger components of air cooling tubes condenser is formed in some air cooling condensing tube banks unit, again with air duct, shutter set, form complete air cooling tubes condenser, it is characterized in that: form vertical air cooling condensing tube bank unit (10) by finned tube (4), the steam-distributing pipe of vertically arranging (2), the vertical condensed water collecting pipe of arranging (3) with vertical windward side; Vertically the finned tube (4) in the windward side is connected between vertical steam-distributing pipe (2) and the condensed water collecting pipe (3) with the non-horizontal mode of axis; The heat exchanger components of closing structure is formed in plurality of vertical air cooling condensing tube bank unit (10), places around aeration tower tube (8) lower end; The shutter (5) of control air quantity vertically is arranged in the inlet side of vertical air cooling condensing tube bank unit (10); Steam inlet house steward (1) and arm (9) are connected in steam-distributing pipe (2) one ends with ring-type.
2. gravity-flow ventilation air cooling tubes condenser according to claim 1 is characterized in that: finned tube (4) cross section is for circular.
3. gravity-flow ventilation air cooling tubes condenser according to claim 1 is characterized in that: finned tube (4) cross section is oval or flat finned tube, and major cross-sectional axis becomes to be in tilted layout with horizontal plane.
4. gravity-flow ventilation air cooling tubes condenser according to claim 1 is characterized in that: vertically the closed shape heat exchanger components of air cooling condensing tube bank unit composition column structure is rectangle or circular or oval or many prismatics.
5. gravity-flow ventilation air cooling tubes condenser according to claim 1 is characterized in that: steam inlet house steward and arm (9) are connected in the lower end of steam-distributing pipe (2) with ring-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202429410U CN201787827U (en) | 2009-11-03 | 2009-11-03 | Natural ventilation air cooling condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202429410U CN201787827U (en) | 2009-11-03 | 2009-11-03 | Natural ventilation air cooling condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787827U true CN201787827U (en) | 2011-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202429410U Expired - Fee Related CN201787827U (en) | 2009-11-03 | 2009-11-03 | Natural ventilation air cooling condenser |
Country Status (1)
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| CN (1) | CN201787827U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052857A (en) * | 2009-11-03 | 2011-05-11 | 李宁 | Natural ventilation air-cooling condenser |
| CN102980417A (en) * | 2012-12-03 | 2013-03-20 | 中国电力工程顾问集团西北电力设计院 | Tower type direct air cooled condenser and tower type direct dry cooling system thereof |
| CN103900397A (en) * | 2014-04-16 | 2014-07-02 | 山西科工龙盛科技有限公司 | Indirect air cooling method of light water-saving and anti-freezing steel frame structure tower |
| CN104533545A (en) * | 2014-12-27 | 2015-04-22 | 西安热工研究院有限公司 | Novel air cooling system |
| CN105066730A (en) * | 2015-07-24 | 2015-11-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Lotus flower type condenser and hertz dry cooling system |
| CN105464725A (en) * | 2015-12-31 | 2016-04-06 | 武汉凯迪电力工程有限公司 | Direct-air-cooling power generation system with natural ventilation cooling tower |
| CN107421348A (en) * | 2017-09-06 | 2017-12-01 | 中国大唐集团科技工程有限公司 | The gravity-flow ventilation direct air cooling system that a kind of fin is in tilted layout |
-
2009
- 2009-11-03 CN CN2009202429410U patent/CN201787827U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052857A (en) * | 2009-11-03 | 2011-05-11 | 李宁 | Natural ventilation air-cooling condenser |
| CN102052857B (en) * | 2009-11-03 | 2014-06-18 | 李宁 | Natural ventilation air-cooling condenser |
| CN102980417A (en) * | 2012-12-03 | 2013-03-20 | 中国电力工程顾问集团西北电力设计院 | Tower type direct air cooled condenser and tower type direct dry cooling system thereof |
| CN102980417B (en) * | 2012-12-03 | 2014-10-15 | 中国电力工程顾问集团西北电力设计院 | Tower type direct air cooled condenser and tower type direct dry cooling system thereof |
| CN103900397A (en) * | 2014-04-16 | 2014-07-02 | 山西科工龙盛科技有限公司 | Indirect air cooling method of light water-saving and anti-freezing steel frame structure tower |
| CN103900397B (en) * | 2014-04-16 | 2015-12-02 | 山西科工龙盛科技有限公司 | A kind of light-weight steel cage structure tower indirect air cooling method of energy anti-freezing economical |
| CN104533545A (en) * | 2014-12-27 | 2015-04-22 | 西安热工研究院有限公司 | Novel air cooling system |
| CN105066730A (en) * | 2015-07-24 | 2015-11-18 | 中国电力工程顾问集团西北电力设计院有限公司 | Lotus flower type condenser and hertz dry cooling system |
| CN105066730B (en) * | 2015-07-24 | 2017-03-01 | 中国电力工程顾问集团西北电力设计院有限公司 | Flos Nelumbinis condenser and hertz dry cooling systems |
| CN105464725A (en) * | 2015-12-31 | 2016-04-06 | 武汉凯迪电力工程有限公司 | Direct-air-cooling power generation system with natural ventilation cooling tower |
| CN107421348A (en) * | 2017-09-06 | 2017-12-01 | 中国大唐集团科技工程有限公司 | The gravity-flow ventilation direct air cooling system that a kind of fin is in tilted layout |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20151103 |
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| EXPY | Termination of patent right or utility model |