DE814905C - Surface heat exchanger heated by boiler steam - Google Patents

Surface heat exchanger heated by boiler steam

Info

Publication number
DE814905C
DE814905C DEP51439A DEP0051439A DE814905C DE 814905 C DE814905 C DE 814905C DE P51439 A DEP51439 A DE P51439A DE P0051439 A DEP0051439 A DE P0051439A DE 814905 C DE814905 C DE 814905C
Authority
DE
Germany
Prior art keywords
heat exchanger
surface heat
pipe
preheater
exchanger according
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.)
Expired
Application number
DEP51439A
Other languages
German (de)
Inventor
Johann Koelling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Original Assignee
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsche Babcock and Wilcox Dampfkesselwerke AG filed Critical Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority to DEP51439A priority Critical patent/DE814905C/en
Application granted granted Critical
Publication of DE814905C publication Critical patent/DE814905C/en
Expired 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
    • F22D1/006Feed-water heaters, i.e. economisers or like preheaters with heating tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Die Erfindung betrifft einen vom Kesseldampf beheizten Oberflächen-Wärmeaustauscher zum Anwärmen des aus dem Speisewasservorwärmer in die Kesseltrommel strömenden Wassers.The invention relates to a surface heat exchanger heated by the boiler steam for heating the water flowing from the feedwater preheater into the boiler drum.

Wenn das Speisewasser in dem Vorwärmer nicht nahe an die Sattdampftemperatur des Kessels erhitzt wird, so besteht ein Temperatursprung, der beim Einspeisen in den Kessel plötzlich ausgeglichen wird und dadurch zu Schlägen und Werkstoffspannungen führt. Um dies zu vermeiden, kann ein mit Dampf beheizter Oberflächen-Wärmeaustauscher zwischen Vorwärmer und Kesseltrommel geschaltet werden. Es ist bekannt, die Austrittsenden der Vorwärmerrohre konzentrisch in den Steigrohren des Dampferzeugers zu führen, allerdings in der Absicht, Rohrschäden durch Feuerbeheizung zu vermeiden, wenn infolge Versagens der Speisung keine Strömung im Rohr ist.When the feed water in the preheater is not close to the saturated steam temperature of the boiler is heated, there is a temperature jump that occurs when feeding into the boiler is suddenly equalized and this leads to impacts and material stresses leads. To avoid this, a steam-heated surface heat exchanger can be switched between the preheater and boiler drum. It is known the exiting ends to run the preheater pipes concentrically in the riser pipes of the steam generator, however, with the intention of avoiding pipe damage from fire heating, if as a result If the supply fails, there is no flow in the pipe.

Gemäß der Erfindung wird der Oberflächen-Wärmeaustauscher in der Weise ausgebildet, daß an den Dampfraum der Kesseltrommel einseitig geschlossene Rohrstutzen angeschlossen werden, durch die je ein Austrittsrohr des Speisewasservorwärmers geführt ist. In diese Rohrstutzen tritt der Dampf aus der Kesseltrommel ein und kondensiert an den Vorwärmerrohren, wobei er das in ihnen strömende Wasser erwärmt. Die Heizflächen können so bemessen werden, daß bei Spitzenlast das @\'asser bis nahe an die Sattdampftemperatur erwärmt wird. Für Teillasten ist dann ein fast vollständiger Temperaturausgleich gesichert.According to the invention, the surface heat exchanger is made in the manner formed that on the steam space of the boiler drum on one side closed pipe socket connected through each of the feedwater preheater outlet pipes is led. The steam from the boiler drum enters into this pipe socket and condenses on the preheater pipes, heating the water flowing through them. The heating surfaces can be dimensioned so that at peak load the @ \ 'water up to is heated close to the saturated steam temperature. For partial loads it is then almost complete Temperature equalization secured.

Um das Kondenswasser aus den Rohrstutzen zu entfernen, können diese lotrecht, schräg nach oben oder waagerecht angeordnet werden, so daß das Kondensat durch natürliches Gefälle in die Kesseltrommel zurückfließt. Wenn die einfache Rohrdurchführung zur Unterbringung der Heizfläche nicht genügt, kann der Rohrstutzen größeren Durchmesser haben und das Vorwärmerrohr in Form einer doppelten Rohrschleife in ihn geführt werden. Die Entwässerung des Rohrstutzens kann auch durch einen Rohranschluß an einen Fallrohrsammler des Kessels erfolgen.In order to remove the condensation water from the pipe socket, these be arranged vertically, obliquely upwards or horizontally, so that the condensate flows back into the boiler drum through a natural gradient. If the simple pipe penetration is not sufficient to accommodate the heating surface, the pipe socket can have a larger diameter and led the preheater pipe into it in the form of a double pipe loop will. The drainage of the pipe socket can also be connected to a pipe connection a downpipe collector of the boiler.

In den Abb. i und 2 i'st ein gemäß der Erfindung ausgebildeter Wärmeaustauscher im Längs- und Querschnitt dargestellt.FIGS. 1 and 2 show a heat exchanger designed according to the invention shown in longitudinal and cross-section.

An die Kesseltrommel i sind waagerechte Rohrstutzen 2 angeschlossen, welche an ihren äußeren Enden verschlossen sind. Durch jeden dieser Rohrstutzen führt in Form einer Doppelschleife ein Austrittsrohr 3 des Speisewasservorwärmers. Die Rohrstutzen sind gegen die Trommel hin eingezogen und durch Einwalzen in der Trommelwand befestigt. Nach dem Einwalzen wird das rechtwinklig ab-, gebogene Auslaufrohr 4 in die mit der Rohrschleife 3 verbundene Muffe 5 eingeschraubt, so daß die Rohre in der Speiserinne 6 ausmünden. An den Stutzen 7 wird die Entwässerungsleitung angeschlossen, welche mit einem Sammler der Kesselfallrohre verbunden ist.Horizontal pipe sockets 2 are connected to the boiler drum i, which are closed at their outer ends. Through each of these pipe sockets leads in the form of a double loop an outlet pipe 3 of the feedwater preheater. The pipe sockets are drawn in towards the drum and rolled into the Drum wall attached. After rolling in, the outlet pipe is bent at right angles 4 screwed into the sleeve 5 connected to the pipe loop 3, so that the pipes open out in the feeder channel 6. The drainage pipe is connected to the nozzle 7, which is connected to a collector of the boiler downpipes.

Claims (6)

PATENTANSPRÜCHE: t. Vom Kesseldampf beheizter Oberflächen-Wärmeaustauscher zum Anwärmen des aus dem Speisewasservorwärmer in- die Kesseltrommel strömenden Wassers, dadurch gekennzeichnet, daß an den Dampfraum der Kesseltrommel einseitig geschlossene Rohrstutzen angeschlossen sind, durch die je ein Austrittsrohr des Speisewasservorwärmers geführt ist. PATENT CLAIMS: t. Surface heat exchanger heated by the boiler steam for heating the water flowing from the feedwater preheater into the boiler drum, characterized in that pipe sockets closed on one side are connected to the steam space of the boiler drum, through each of which an outlet pipe of the feedwater preheater is passed. 2. Oberflächen-Wärmeautauscher nach Anspruch i, dadurch gekennzeichnet, daß die Rohrstutzen annähernd «-aagerecht angeordnet sind und sich durch natürliches Gefälle nach der Kesseltrommel hin entwässern oder an einen Fallrohrsammler angeschlossen sind. 2. Surface heat exchanger according to claim i, characterized in that the pipe socket is arranged approximately «-aagerecht and drain through a natural gradient towards the boiler drum or are connected to a downpipe collector. 3. Oberflächen-Wärmeaustauscher nach den Ansprüchen i und 2, dadurch gekennzeichnet, daß die Vorwärmerrohre in Doppelschleifen durch die Rohrstutzen geführt sind. 3. Surface heat exchanger according to claims i and 2, characterized in that the preheater pipes in double loops are passed through the pipe socket. 4. Oberflächen-Wärmeaustauscher nach den Ansprüchen i und 2, dadurch gekennzeichnet, daß die Austrittsrohrenden des Speise«-asservorwärmers nach unten gebogen sind und in eine Speiserinne ausmünden. 4. Surface heat exchanger according to the claims i and 2, characterized in that the outlet pipe ends of the feed «water preheater are bent downwards and open into a feed channel. 5. Oberflächen-Wärmeaustauscher nach den Ansprüchen i, 2 und ,4, dadurch gekennzeichnet, daß das abgebogene Rohrende des Speisewasservorwärmers in eine am Kühlrohr befindliche bluffe lose eingesetzt ist. 5. Surface heat exchanger according to claims 1, 2 and 4, characterized in that the bent pipe end of the feed water preheater loosely inserted into a bluff located on the cooling pipe is. 6. Oberflächen-Wärmeaustauscher nach Anspruch i, dadurch gekennzeichnet, daß die Rohrstutzen nach der Kesseltrommel hin kleineren Durchmesser haben. Angezogene Druckschriften: USA.-Patentschrift Nr.2o6344i.6. surface heat exchanger according to claim i, characterized in that the pipe sockets have a smaller diameter towards the boiler drum. Dressed References: U.S. Patent No. 2006344i.
DEP51439A 1949-08-09 1949-08-09 Surface heat exchanger heated by boiler steam Expired DE814905C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP51439A DE814905C (en) 1949-08-09 1949-08-09 Surface heat exchanger heated by boiler steam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP51439A DE814905C (en) 1949-08-09 1949-08-09 Surface heat exchanger heated by boiler steam

Publications (1)

Publication Number Publication Date
DE814905C true DE814905C (en) 1951-09-27

Family

ID=7385089

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP51439A Expired DE814905C (en) 1949-08-09 1949-08-09 Surface heat exchanger heated by boiler steam

Country Status (1)

Country Link
DE (1) DE814905C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909343C (en) * 1951-03-20 1954-04-15 Kohlenscheidungsgesellschaft M Pipe cooler for superheated steam
DE1006860B (en) * 1954-10-27 1957-04-25 Maschf Augsburg Nuernberg Ag Surface cooler for regulating the hot steam temperature in steam boilers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063441A (en) * 1930-07-22 1936-12-08 Babcock & Wilcox Co Superheated steam cooling device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063441A (en) * 1930-07-22 1936-12-08 Babcock & Wilcox Co Superheated steam cooling device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909343C (en) * 1951-03-20 1954-04-15 Kohlenscheidungsgesellschaft M Pipe cooler for superheated steam
DE1006860B (en) * 1954-10-27 1957-04-25 Maschf Augsburg Nuernberg Ag Surface cooler for regulating the hot steam temperature in steam boilers

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