166:. The steam and water mixture enters the steam drum through riser tubes, drum internals consisting of demister separate the water droplets from the steam producing dry steam. The saturated water at the bottom of the steam drum flows down through the downcomer pipe, normally unheated, to headers and water drum. Its accessories include a safety valve, water-level indicator and level controller. Feed-water of boiler is also fed to the steam drum through a feed pipe extending inside the drum, along the length of the steam drum.
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Bi drum boiler – are used for power generation and steam generation both. For power generation they are used now seldom and are replaced by single drum boilers as the bi drum boilers are non-reheat units. So, due to the high heat rate of the plant a single drum boiler or a once through boiler is more
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Single drum boiler – are used mainly for the power plants for power generation. The pressure limit for single drum boilers is higher than that of the bi drum boilers as the stress concentration is reduced to a greater extent. There exists only one drum and the downcomers are welded to it. Single
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A steam drum is used without or in the company of a mud-drum/feed water drum which is located at a lower level. A boiler with both steam drum and mud/water drum is called a bi-drum boiler and a boiler with only a steam drum is called a mono-drum boiler. The bi-drum boiler construction is normally
150:. The single drum at the bottom and three drums on the top were connected through a network of tubes which were welded to the drums above and the single drum below. The rational demand of steam in terms of capacity, pressure and temperature resulted in bi drums and single drum boilers.
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where the frame is not required as the downcomers itself serves the purpose of it and also they are designed as top supported where the whole boiler assembly needs an external frame and supported by top
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The separated steam is drawn out from the top section of the drum and distributed for process. Further heating of the saturated steam will make superheated steam normally used to drive a
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feasible. In process steam generation the bi drum boilers are used commonly as they can adapt to the high load fluctuation and respond to load changes.
130:. The difference in densities between hot and cold water helps in the accumulation of the "hotter"-water/and saturated-steam into the steam-drum.
126:. It is a reservoir of water/steam at the top end of the water tubes. The drum stores the steam generated in the water tubes and acts as a phase-
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197:/four drum boilers – are the veterans of the normal day boilers, although they are still used in some industries.
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drum boilers are suitable and can adapt to both reheat and non-reheat type of boilers. They can be designed as
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intended for low pressure-rating boiler while the mono-drum is mostly designed for higher pressure-rating.
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Schematic diagram of a marine-type water tube boiler-see the steam drum at the top and feed drum
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Initially the boilers were designed with 4 drums and 3 drums like the
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On steam locomotives the steam drum is also called a
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243:"Bi Drum and Single Drum Boiler Compared"
241:Sathyanathan, Dr V T (19 February 2010).
106:Learn how and when to remove this message
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128:separator for the steam/water mixture
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44:adding citations to reliable sources
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31:needs additional citations for
527:Internally rifled boiler tubes
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247:www.brighthubengineering.com
223:, does not have a steam drum
221:Once-through steam generator
122:is a standard feature of a
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496:Electric water boiler
491:Electric steam boiler
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415:Babcock & Wilcox
181:Types of Steam Drums
40:improve this article
571:Boiler peripherals
407:Water-tube boilers
207:Corner tube boiler
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510:Boiler components
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51:Find sources:
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29:This article
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583:Boiler water
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532:Safety valve
522:Fusible plug
460:Thimble tube
250:. Retrieved
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55:"Steam drum"
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38:Please help
33:verification
30:
608:Superheater
562:Water gauge
420:Corner tube
164:superheater
623:Categories
552:Steam drum
547:Steam dome
465:Three-drum
425:Field-tube
392:Transverse
377:Locomotive
334:Lancashire
228:References
195:Three drum
175:steam dome
120:steam drum
96:April 2013
66:newspapers
319:Egg-ended
598:Injector
537:Smokebox
470:Vertical
455:Stirling
445:Sentinel
440:Monotube
397:Vertical
329:Haystack
215:See also
634:Boilers
517:Firebox
367:Haycock
357:Cochran
314:Cornish
295:Boilers
252:9 April
154:Working
142:History
80:scholar
475:Yarrow
450:Spiral
435:LaMont
387:Scotch
382:Pistol
372:Launch
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430:Flash
339:Wagon
324:Flued
210:drum.
87:JSTOR
73:books
542:Stay
254:2013
59:news
309:Box
42:by
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