DE1501653A1 - Air preheater - Google Patents

Air preheater

Info

Publication number
DE1501653A1
DE1501653A1 DE19661501653 DE1501653A DE1501653A1 DE 1501653 A1 DE1501653 A1 DE 1501653A1 DE 19661501653 DE19661501653 DE 19661501653 DE 1501653 A DE1501653 A DE 1501653A DE 1501653 A1 DE1501653 A1 DE 1501653A1
Authority
DE
Germany
Prior art keywords
air preheater
air
preheater
sheet metal
beads
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.)
Pending
Application number
DE19661501653
Other languages
German (de)
Inventor
Karl Bergmann
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.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
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 L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Publication of DE1501653A1 publication Critical patent/DE1501653A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00Spacing means

Description

"Luftvorwärmer" Die Erfindung betrifft einen Luftvorwärmer aus Stahlblechen. Es ist insbesondere Im Dampfkesselbau hekannt, zur Vorwärmunff von Luft. innerhalb der Kesselzitre aus Blechplatten gebildete Luftvorwärmer einzusetzen, die jedoch wegen der bis- her erforderlichen einzuschweißenden Distanzbleche zur Einhaltung der Blechabstände sehr umstiindlich und teuer zu fertigen sind. Es Ist auch bekannt, Röhren-Luftvorwärmer In die Kesselzlige einzusetzen, jedoch ist bei dieser Art von Vorwärmern der Druckverlust, erheblich höher."Air Preheater" The invention relates to an air preheater made from sheet steel. It is especially known in steam boiler construction to preheat air. use within the Kesselzitre of sheet metal plates air preheater formed, but they must be finished very umstiindlich and expensive because of the bis ago required einzuschweißenden shims to adhere to the plate spacing. It is also known to use tubular air preheaters in the boiler rooms, but with this type of preheater the pressure loss is considerably higher.

Bekannt ist, auch die Anordnung von Regenerativ-Luftvorwärmern hinter dem Kesselaggregat, insbesondere der sogenannte Ljungström-Luftvorwärmer. Diese etöhen gesondert zum Kessel und benötigen einen eigenen Antrieb.The arrangement of regenerative air preheaters behind is also known the boiler unit, especially the so-called Ljungström air preheater. These They are separate from the boiler and require their own drive.

Aufgabe der Erfindung ist es, einen innerhalb der KenselzUge unterzubringenden Luftvorwärmer zu schaffen, der wIrtschaftlicher hergestellt werden kann als die erwähnten Luftvorwäriner. Diese Aufgabe wird dadurch gelöst, daß der Luftvorwärmer aus Blechen gebildet wird, in die Sicken eingewalzt sind,_die einmal zur Distanzierung der Bleche untereinander dienen, zum anderen durch die durch sie verursachte Verwirbelung der wXrmetauschenden Medien den Wärmellbergang verbessern. Durch diese Konstruktion'wird gepenüber der bisherigen r#kuperativen Bauart die erforderliche Heizfläche um etwa 10 bis 30 % verringert, das Gewicht um ca 50 bis 70 %, der erforderliebe Einbauraum-um mindestens 50 %. Ferner können die UnterstlItzung und das Gerüst verringert werden, die Montage ist weniger aufwendig und die Vorwärmertelle können als genormte Elemente.in Blöcken hergestellt und zu dem Gesamt-Vorwärmer am Nfontageort zusammengebaut werden.The object of the invention is to provide an air preheater to be housed within the KenselzUge, the economic may be prepared as mentioned Luftvorwäriner. This object is achieved in that the air preheater is formed from metal sheets into which beads are rolled, which on the one hand serve to distance the metal sheets from one another and, on the other hand, improve the heat transfer through the swirling of the heat exchanging media caused by them. This construction reduces the required heating surface by about 10 to 30% , the weight by about 50 to 70%, and the required installation space by at least 50% compared to the previous r # kuperative design. Furthermore, the support and the scaffolding can be reduced, the assembly is less complex and the preheater points can be produced as standardized elements in blocks and assembled to form the overall preheater at the site.

In den Figuren 1 und 2 ist ein Ausführungsbeispiel der Erfindunt schematisch dargestellt.In Figures 1 and 2, an embodiment of the invention is shown schematically.

Fig. 1 zeigt eine Seitenansicht einer Blechplatte den Luftvorwärmers, Fig. 2 einen Schnitt durch ein Bündel solcher Blechplatten. In Fig. 1 sind beispielsweise In die ea 1,0 zu dicken Bleche 1 mittels einer Walze zueinander versetzt angeordnete, ea 6 mm tiefe und 60 bis 70 mm lanre Sicken 2 eingewalzt.Fig. 1 shows a side view of a sheet metal plate of the air preheater, Fig. 2 shows a section through a bundle of such sheet metal plates. In Fig. 1 , for example, in the ea 1.0 thick sheets 1 arranged offset from one another by means of a roller, ea 6 mm deep and 60 to 70 mm long beads 2 are rolled.

Die Sickentiefe von hier z.B. 6 mm stellt gleichzeitig den Abstand der Bleche untereinander und damit die Spaltbreite für die wärmetauschenden Medien dar. Hierdurch entsteht in Wechsel jeweils eine Gaskammer 3 und eine Luftkammer 4. Die Sicken sind In Strömungsrichtung der w11irmetauschenden Medien angebracht, stehen also von Blech zu Blech quer zueinander. Durch die Sicken 2 werden die Nfengenströme ständig verwirbelt.The bead depth of here, for example 6 mm, simultaneously represents the distance between the sheets and thus the gap width for the heat-exchanging media. This creates a gas chamber 3 and an air chamber 4 in alternation Sheet to sheet at right angles to each other. The corrugations 2 cause the Nfengenströmme to be constantly swirled.

Die Aufgabe der versetzt angebrachten Sicken .2 als DistanzstUcke ist aus Fig. 2 zu entnehmen, aus der auch die Anbringung derartiger Sicken an der Rilckwand der luftfUhrenden Kammern 4 zu erkennen ist.The object of the offset attached beads .2 as distance pieces is shown in Fig. 2 below, can be seen from the attachment of such beads on the Rilckwand the air leading chambers 4.

Claims (1)

Pal en 1 anspruch
.l,tiftvor#%-*,-irmer aus Sfahlblechen, (1 a d u r v h e e n n z e 1 p li n e 1 , daß zur Pislanzierung der Meehe (1) untereinander und zur #ler-ii-irlieltin#, der wl-irme- lauschenden Medien schr.i,- zueinander versetzle oder re("lil%vinl(II!, zueinander verlaufende Sleken (2) einge- walzl sind.
Pal en 1 claim
.l, tiftvor #% - *, - irmer made of sheet metal, (1 a du r v he ennze 1 p li ne 1, that to plant the Meehe (1) among each other and to # ler-ii-irlieltin #, the wl-irme- listening media schr.i, - offset to each other or re ("lil% vinl (II !, sleeves (2) running towards each other) are walzl.
DE19661501653 1966-11-29 1966-11-29 Air preheater Pending DE1501653A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST026171 1966-11-29

Publications (1)

Publication Number Publication Date
DE1501653A1 true DE1501653A1 (en) 1969-11-06

Family

ID=7460881

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661501653 Pending DE1501653A1 (en) 1966-11-29 1966-11-29 Air preheater

Country Status (1)

Country Link
DE (1) DE1501653A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0625688A1 (en) * 1993-05-18 1994-11-23 SGL Technic Plate heat exchanger
DE4343399A1 (en) * 1993-12-18 1995-06-22 Balcke Duerr Ag Plate heat exchanger
EP1172624A3 (en) * 2000-07-14 2002-01-23 Balcke-Dürr Energietechnik GmbH Plate-like heat exchanger
EP1085285A3 (en) * 1999-09-16 2002-05-08 Balcke-Dürr Energietechnik GmbH Plate-like heat exchanger and evaporator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0625688A1 (en) * 1993-05-18 1994-11-23 SGL Technic Plate heat exchanger
FR2705445A1 (en) * 1993-05-18 1994-11-25 Vicarb Sa Plate heat exchanger.
US5544703A (en) * 1993-05-18 1996-08-13 Vicarb Plate heat exchanger
DE4343399A1 (en) * 1993-12-18 1995-06-22 Balcke Duerr Ag Plate heat exchanger
EP1085285A3 (en) * 1999-09-16 2002-05-08 Balcke-Dürr Energietechnik GmbH Plate-like heat exchanger and evaporator
EP1172624A3 (en) * 2000-07-14 2002-01-23 Balcke-Dürr Energietechnik GmbH Plate-like heat exchanger

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