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DE294483C - - Google Patents

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Publication number
DE294483C
DE294483C DENDAT294483D DE294483DA DE294483C DE 294483 C DE294483 C DE 294483C DE NDAT294483 D DENDAT294483 D DE NDAT294483D DE 294483D A DE294483D A DE 294483DA DE 294483 C DE294483 C DE 294483C
Authority
DE
Germany
Prior art keywords
water
preheater
tubes
tube
preheating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DENDAT294483D
Other languages
German (de)
Publication of DE294483C publication Critical patent/DE294483C/de
Active legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/16Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
    • F22D1/18Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT,PATENT OFFICE,

Die Erfindung betrifft einen Vorwärmer zur Vorwärmung von Wasser in Röhren, die im Heizgasabzug eines Dampfkessels angeordnet sind. Um bei solchen Vorwärmern das bekannte, beim Eintreten von Wasser mit tieferen Temperaturen als 400C stattfindende Schwitzen der äußeren Rohroberflächen zu vermeiden, hat man das Wasser an anderer Stelle auf ungefähr 40 ° C vorgewärmt oder die ersten Röhrenreihen mit Schutzröhren überzogen. Die erstere Einrichtung läßt den wertvollsten Teil des Temperaturgefälles zwischen Rauchgas- und Wassertemperatur ungenutzt, und die andere Einrichtung bedingt eine unverhältnismäßig große Vorgruppe, da bei den bemäntelten Röhren der Wärmedurchgang klein ausfällt. Beim Gegenstand der Erfindung ist das Schwitzen der Röhren des eigentlichen Vorwärmers dadurch beseitigt, daß diesem unmittelbar von den Abgasen beheizten Röhrenvorwärmer ein Schlangenrohr o. dgl. mit kreisender Flüssigkeit für eine mittelbare Vorbeheizung des dem Röhrenvorwärmer zugeführten Wassers vorgeschaltet ist.The invention relates to a preheater for preheating water in tubes which are arranged in the hot gas exhaust of a steam boiler. In order to avoid the well-known, takes place over 40 0 C at the entrance of water with lower temperatures sweating of the outer tube surfaces in such heaters, one has the water elsewhere to about 40 ° C preheated or coated, the first rows of tubes with protective tubes. The first device leaves the most valuable part of the temperature difference between flue gas and water temperature unused, and the other device requires a disproportionately large preliminary group, since the heat transfer is small in the jacketed tubes. In the subject matter of the invention, the sweating of the tubes of the actual preheater is eliminated in that this tube preheater, which is directly heated by the exhaust gases, is preceded by a coiled tube or the like with circulating liquid for indirect preheating of the water supplied to the tube preheater.

Die neue Vorwärmeranlage ist auf der Zeichnung in einfachen Linien in Seitenansicht mit Schnitt durch den Rauchkanal dargestellt.The new preheater system is shown in the drawing in simple lines in a side view Section through the smoke channel shown.

Bei der neuen Anlage ist in an sich bekannter Weise eine Rohrschlange R zum Teil im Rauchkanal, zum anderen Teil in einen Wasserbehälter W eingebaut und mit einem beliebigen flüssigen oder gasförmigen Wärmeträger gefüllt, der bei seiner Strömung durch die Schlange die Abwärme der Rauchgase in den einen Teil der Schlange aufnimmt und aus dem anderen, im Wasserbehälter W liegenden Teil an das kalte Wasser abgibt. Das zu erwärmende Wasser fließt bei I dem Wasserbehälter W zu und, nachdem es hier auf rund 400C erwärmt ist, bei II ab, um von da in den zweiten, eigentlichen Röhren vorwärmer R1 überzutreten, welcher im Rauchkanal K angeordnet ist und die weitere Erwärmung des Wassers bewirkt. Der kreisende Inhalt der Rohrschlange R und damit der den Rauchgasen ausgesetzte Teil der Rohrwandung wird eine mittlere Temperatur zwischen Rauchgas- und Wassertemperatur annehmen, die also weit über derjenigen Temperatur liegt, bei welcher ein Schwitzen der Rohrschlangenwandung zu befürchten ist.In the new system, a pipe coil R is installed in a manner known per se, partly in the smoke channel and partly in a water tank W and filled with any liquid or gaseous heat carrier, which, as it flows through the coil, transfers the waste heat from the flue gases to one Part of the snake picks up and releases it from the other part, lying in the water tank W , to the cold water. The water to be heated flows to the water tank W at I and, after it has been heated to around 40 0 C here, from II to pass from there into the second, actual tube preheater R 1 , which is arranged in the smoke channel K and the causes further heating of the water. The circulating content of the pipe coil R and thus the part of the pipe wall exposed to the flue gases will assume an average temperature between the flue gas and water temperature, which is well above the temperature at which sweating of the pipe coil wall is to be feared.

Claims (1)

Patent-Anspruch:Patent claim: Vorwärmer zur Vorwärmung von Wasser in Röhren, die im Heizgasabzug eines Dampf kesseil angeordnet sind, dadurch gekennzeichnet, daß dem unmittelbar von den Abgasen beheizten Röhrenvorwärmer (R1) ein für mittelbare Vorbeheizung bekanntes Schlangenrohr (R) o. dgl. mit kreisender Flüssigkeit vorgeschaltet ist.Preheater for preheating water in tubes which are arranged in the heating gas exhaust of a steam boiler, characterized in that the tube preheater (R 1 ) , which is directly heated by the exhaust gases, is preceded by a coil pipe (R) known for indirect preheating or the like with circulating liquid . Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT294483D Active DE294483C (en)

Publications (1)

Publication Number Publication Date
DE294483C true DE294483C (en)

Family

ID=549038

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
DE (1) DE294483C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2275650A1 (en) * 2008-10-17 2011-01-19 General Electric Company Combined cycle power plant
US8157512B2 (en) 2008-07-29 2012-04-17 General Electric Company Heat pipe intercooler for a turbomachine
US8186152B2 (en) 2008-07-23 2012-05-29 General Electric Company Apparatus and method for cooling turbomachine exhaust gas
US8359824B2 (en) 2008-07-29 2013-01-29 General Electric Company Heat recovery steam generator for a combined cycle power plant
US8425223B2 (en) 2008-07-29 2013-04-23 General Electric Company Apparatus, system and method for heating fuel gas using gas turbine exhaust
US8596073B2 (en) 2008-07-18 2013-12-03 General Electric Company Heat pipe for removing thermal energy from exhaust gas

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8596073B2 (en) 2008-07-18 2013-12-03 General Electric Company Heat pipe for removing thermal energy from exhaust gas
US8186152B2 (en) 2008-07-23 2012-05-29 General Electric Company Apparatus and method for cooling turbomachine exhaust gas
US8157512B2 (en) 2008-07-29 2012-04-17 General Electric Company Heat pipe intercooler for a turbomachine
US8359824B2 (en) 2008-07-29 2013-01-29 General Electric Company Heat recovery steam generator for a combined cycle power plant
US8425223B2 (en) 2008-07-29 2013-04-23 General Electric Company Apparatus, system and method for heating fuel gas using gas turbine exhaust
EP2275650A1 (en) * 2008-10-17 2011-01-19 General Electric Company Combined cycle power plant

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