PowerStation Diagram
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9/27/13 File:PowerStation2.svg - Wikipedia, the free encyclopedia en.wikipedia.org/wiki/File:PowerStation2.svg 1/5 File:PowerStation2.svg From Wikipedia, the free encyclopedia Size of this preview: 800 × 550 pixels. Full resolution (SVG file, nominally 3,000 × 2,063 pixels, file size: 456 KB) This image rendered as PNG in other sizes: 200px, 500px, 1000px, 2000px. This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. This is a featured picture, which means that members of the community have identified it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. If you have a different image of similar quality, be sure to upload it using the proper free license tag, add it to a relevant article, and nominate it. This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finest images. If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it. If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it, and nominate it. Description English: A coal-fired thermal power station. 1. Cooling tower. 2. Cooling water pump. 3. Transmission line (3-phase). 4. Unit transformer (3-phase). 5. Electric generator (3-phase). 6. Low pressure turbine. 7. Condensate extraction pump. 8. Condensor. 9. Intermediate pressure turbine. 10. Steam governor valve. 11. High pressure turbine. 12. Deaerator. 13. Feed
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Power station diagram
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9/27/13 File:PowerStation2.svg - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/File:PowerStation2.svg 1/5
File:PowerStation2.svgFrom Wikipedia, the free encyclopedia
Size of this preview: 800 × 550 pixels.Full resolution (SVG file, nominally 3,000 × 2,063 pixels, file size: 456 KB)
This image rendered as PNG in other sizes: 200px, 500px, 1000px, 2000px.
This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
This is a featured picture, which means that members of the community have identified it asone of the finest images on the English Wikipedia, adding significantly to its accompanyingarticle. If you have a different image of similar quality, be sure to upload it using the properfree license tag, add it to a relevant article, and nominate it.
This is a featured picture on the English language Wikipedia (Featured pictures) and is considered one of the finestimages.
If you think this file should be featured on Wikimedia Commons as well, feel free to nominate it.If you have an image of similar quality that can be published under a suitable copyright license, be sure to upload it, tag it,and nominate it.
Description English: A coal-fired thermal power station.
1. Cooling tower. 2. Cooling water pump. 3. Transmission line (3-phase). 4. Unit transformer (3-phase). 5.Electric generator (3-phase). 6. Low pressure turbine. 7. Condensate extraction pump. 8. Condensor. 9.Intermediate pressure turbine. 10. Steam governor valve. 11. High pressure turbine. 12. Deaerator. 13. Feed
9/27/13 File:PowerStation2.svg - Wikipedia, the free encyclopedia
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heater. 14. Coal conveyor. 15. Coal hopper. 16. Pulverised fuel mill. 17. Boiler drum. 18. Ash hopper. 19.Superheater. 20. Forced draught fan. 21. Reheater. 22. Air intake. 23. Economiser. 24. Air preheater. 25.Precipitator. 26. Induced draught fan. 27. Chimney Stack.
Coal is conveyed (14) from an external stack and ground to a very fine powder by large metal spheres in thepulverised fuel mill (16). There it is mixed with preheated air (24) driven by the forced draught fan (20). The hotair-fuel mixture is forced at high pressure into the boiler where it rapidly ignites. Water of a high purity flowsvertically up the tube-lined walls of the boiler, where it turns into steam, and is passed to the boiler drum, wheresteam is separated from any remaining water. The steam passes through a manifold in the roof of the drum into thependant superheater (19) where its temperature and pressure increase rapidly to around 200 bar and 570°C,sufficient to make the tube walls glow a dull red. The steam is piped to the high pressure turbine (11), the first of athree-stage turbine process. A steam governor valve (10) allows for both manual control of the turbine andautomatic set-point following. The steam is exhausted from the high pressure turbine, and reduced in bothpressure and temperature, is returned to the boiler reheater (21). The reheated steam is then passed to theintermediate pressure turbine (9), and from there passed directly to the low pressure turbine set (6). The exitingsteam, now a little above its boiling point, is brought into thermal contact with cold water (pumped in from thecooling tower) in the condensor (8), where it condenses rapidly back into water, creating near vacuum-likeconditions inside the condensor chest. The condensed water is then passed by a feed pump (7) through adeaerator (12), and pre-warmed, first in a feed heater (13) powered by steam drawn from the high pressure set,and then in the economiser (23), before being returned to the boiler drum. The cooling water from the condensoris sprayed inside a cooling tower (1), creating a highly visible plume of water vapor, before being pumped back tothe condensor (8) in cooling water cycle.
The three turbine sets are sometimes coupled on the same shaft as the three-phase electrical generator (5) whichgenerates an intermediate level voltage (typically 20-25 kV). This is stepped up by the unit transformer (4) to avoltage more suitable for transmission (typically 250-500 kV) and is sent out onto the three-phase transmissionsystem (3).
Exhaust gas from the boiler is drawn by the induced draft fan (26) through an electrostatic precipitator (25) and isthen vented through the chimney stack (27).Русский: Схема ГРЭС на угле: 1 — градирня; 2 — циркуляционный насос; 3 — линияэлектропередачи; 4 — повышающий трансформатор; 5 — турбогенератор; 6 — цилиндрнизкого давления паровой турбины; 7 — конденсатный насос; 8 — поверхностныйконденсатор; 9 — цилиндр среднего давления паровой турбины; 10 — стопорный клапан; 11— цилиндр высокого давления паровой турбины; 12 — деаэратор; 13 — регенеративныйподогреватель; 14 — транспортёр топливоподачи; 15 — бункер угля; 16 — мельница угля; 17— барабан котла; 18 — система шлакоудаления; 19 — пароперегреватель; 20 — дутьевойвентилятор; 21 — промежуточный пароперегреватель; 22 — воздухозаборник; 23 —экономайзер; 24 — регенеративный воздухоподогреватель; 25 — фильтр; 26 — дымосос; 27— дымовая труба.
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References
(1982) Modern Power Station Practice (vol 1:Planning & Layout; vol 2:Boilers, Fuel & Ash-handling plant; vol 3: Turbines& Auxiliary Equipment ed.), Oxford: Pergamon ISBN 0-08-016436-6
RWE npower (http://www.rwe.com) Didcot Power StationsDrax Power Ltd (http://www.draxpower.com) How Drax works
Historique
Date/Time User Dimensions File size Comment (current) 09:04, 29 August 2007 Magicflame (Talk | contribs) 3000×2063 456 KBReverted to version as of 10:24, 21 June 2006 (revert) 12:12, 21 June 2006 BillC (Talk | contribs) 3000×2063 456 KB Fix issue withtext sizing (revert) 10:24, 21 June 2006 BillC (Talk | contribs) 3000×2063 456 KB Coal-fired thermal power station.
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{{Information |Description= A coal-fired thermalpower station. |Source= importée de {{en}} :http://en.wikipedia.org/wiki/Image:PowerStation2.svg|Date= |Author= en:User:BillC |Permission=|other_versions= }} {{GFDL-self-with-disclaimers}} == His
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