DE1551820A1 - Metal pipe recuperator - Google Patents

Metal pipe recuperator

Info

Publication number
DE1551820A1
DE1551820A1 DE19671551820 DE1551820A DE1551820A1 DE 1551820 A1 DE1551820 A1 DE 1551820A1 DE 19671551820 DE19671551820 DE 19671551820 DE 1551820 A DE1551820 A DE 1551820A DE 1551820 A1 DE1551820 A1 DE 1551820A1
Authority
DE
Germany
Prior art keywords
section
tubes
oval cross
recuperator
support plate
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
DE19671551820
Other languages
German (de)
Inventor
Jaroslav Walter
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.)
Skoda np
Original Assignee
Skoda np
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 Skoda np filed Critical Skoda np
Publication of DE1551820A1 publication Critical patent/DE1551820A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/02Tubular elements of cross-section which is non-circular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007Auxiliary supports for elements
    • F28F9/013Auxiliary supports for elements for tubes or tube-assemblies

Landscapes

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

Description

Lietallrohr-Itelcuperator Die Erfindung betrifft einen aus abgeflachten nahtlosen Rohren bestehenden Rekuperator. ' Bisher werden Konvektions-Rekuperatoren, die in Rauch-I;anälen az:,e,)rdnet werden, entweder aus Rippenliedern (Rohren) die zu bektionen zusammengesetzt werden, und zwar fair verschiedene :-Leizflächen, oder aus nahtlosen Rohren mit kreisförmigem Querschnitt bzw. aus geschweißten Hohren, bestehend aus zwei hälften ovalen Querschnittes, bei denen die Böen aus Segmenten geschweißt sind, hervestellt.Lietallrohr-Itelcuperator The invention relates to a flattened seamless pipes existing recuperator. '' So far, convection recuperators, which are rdnet in Rauch-I; analis az:, e,), either from ribs (pipes) die to be put together to work, and fair different: -Stick areas, or from seamless tubes with a circular cross-section or from welded tubes, consisting of two halves of an oval cross-section, in which the gusts consist of segments are welded.

Nachteilig bei der ersten gerippten Rekuperatortype ist nai:.eLtlich sie h:dichtheit, die w@:i:rei-:d des -etriebes " dauernd rr@@@er wird, eir. --roßes Gewicht und eii:e be- deutende Veri#l:i-einigui.-g, da sich die F1u-asche des verbrani,ten i.:ediu-,is an deij Rippent,liedern ansetzt, deren GberflC,.'c: e verbK_ltnismäßiL rauh ist. Aus d eser ,:runde kon-L-.te :.ran auch-. die Reka@eratoren schlecht reinigen, so da- derarti` e Verurreirrigungen der_ .«'r-,.@eäberr;ang 9t:r.ndig verschlechterten. Auch der Ur die Herstellung notwendige Arbeitsaufwand war ziemlich hoch, da man die Köpfe einzelner Glieder an beiden Enden bearbeiten und bohren mußte. Darüber hinaus war die y_:@i@ta- e ziem- lich umständlich, insbesondere wenn inan auf eine gute Abdiciitürii, einzelner Glieder gegeneinander achten mußte. Ein weiterer Nachteil war der große Raumbedarf im Rauchkar_al. Nachteil der zweiten aus nahtlosen Rotren finit = reiefärmigem Querschnitt bestehenderc hekuperatortype war ein geringes Verhältnis .zwischen der Heizfläche und dem Querschnitt für das erhitzte edium. Die Verwendung von Überführungsgehäusen zwischen dem Eintritts- ur:d dem Austrittsgehäuse führte bei Verwendung der -:ehrzugtype zur Vergrößerung der Baufläche im Rauchkanal. Jachteilig bei der dritten Rekuperatortype, die aus äesc_weißten @ohrerzusammengesetzt ist, ist der große Arbeitsaufwüizd beim Schweißen der Rohre und Z-)'e,.:lentbögen. Auf der Seite des erhitzten iediums traten dann größere Widers t".nde auf. Alle diese Dachteile werden durch die Eifindung besei- tiE,t. Die vorlie@;enäe Erfindung schafft einen groß- t> airtecliaftlicli arbeitreiiden Rekuperator. Das ;ler-ei_ der Erfindung besteht darin, daß nahtlose Rohre ovalen Qaei",:chiiittes, die zu kontinuierlichen, ii-föriii- z;eii äcl.leifet. 7,usa:-..ii:eakesetzt sind, im mittleren oberen 'eil der Schleife an einer horizontalen 1-ragplatte auf- gehängt werden, ax4 die eine BlechaufhänLung an der Stelle der @.rößten i@rizmlc_ung der Rohre ovalen Querschnittee an- Gescl.losen .ist, wobei an die der Horizontalplatte am nächsten angeordneten Rohre mittels Blechen weitere Rohrreihen ovalen Querschnittes an#,eschweißt sind. Der Vorteil des erfindunGsgenäßen Rekuperators ist die absolute Dichtheit, eine Verbesserung des Wärmeüberganes, eine Steigerung der Strömungsgeschwindigkeit des b'ediwns, ein geringes Gewicht des Rekuperators, ein kleinerer Rauribedarf im Rauchkanal, kleinere Druckverluste auf der Seite der Verbrennun@sprodu'_te, ein kleinerer Arbeitsaufwand, leichte ReiriGung und die :Jöglichkeit einer freien Ausdehnung der Rohre entsprechenider herrschenden Temperatur. Das Wesen--der Erfindung ist an einem in der Zeichnung dargestellten praktischen Ausführungsbeispiel des Erfindungsgegenstandes näher erläutert. Es zeigen: Fig. 1 einen Schnitt durch den Metallrollr-Rekuperatorg Fig. 2 ein Detail der Ausführung des Flachrohres, Fig. 3 ein Detail der Schleifenaufhängung sowie die Anordnung einzelner Rohrreihen.The disadvantage of the first ribbed recuperator type is nai: .you h: tightness, the w @: i: rei-: d of the operation "constantly rr @@@ he becomes, eir. - great weight and eii: e interpretative veri # l: i-einigui.-g, since the F1u-ashes of the verbrani, ten i.:ediu-,is an deij Rippent, lieder appends, their GberflC,. 'C: e verbK_ltnisgenössiL is rough. From this,: round kon-L-.te: .ran also-. the reca @ erators badly clean, so that such an error of the_. «'r - ,. @ eäberr; ang 9t: badly deteriorated. Also the original production The amount of work required was quite high as one work the heads of individual links at both ends and had to drill. In addition, the y _: @ i @ ta- e was fairly- Lich awkward, especially when inan on a good one Abdiciitürii, individual members had to pay attention to one another. Another disadvantage was the large amount of space required in the Rauchkar_al. The disadvantage of the second type of hekuperator, which consisted of seamless Rotren finite = rectangular cross-section, was a low ratio between the heating surface and the cross-section for the heated medium. The use of transfer housings between the entry ur: d and the exit housing led to an increase in the construction area in the smoke channel when using the -: Ehrzugtype. This is a disadvantage for the third type of recuperator, which consists of äesc_weißten @ohrerzombination is the big one Arbeitsaufwüizd when welding the pipes and Z -) 'e,.: Lentbögen. Larger ones then stepped on the side of the heated iedium Opposition ends. All these roof parts are removed by the discovery tiE, t. The present invention creates a large t> airtecliaftlicli work-free recuperator. The; ler-egg_ of the invention is that seamless tubes oval Qaei ",: chiiittes leading to continuous, ii-föriii- z; eii äcl. leads. 7, usa: - .. ii: are set, in the middle upper '' part of the loop on a horizontal 1-support plate be hung, ax4 the one sheet metal suspension at the point the largest diameter of the pipes with an oval cross-section Gescl.losen .ist, with those of the horizontal plate on next arranged pipes by means of metal sheets Rows of tubes of oval cross-section at #, are welded. The advantage of the recuperator according to the invention is the absolute tightness, an improvement of the heat transfer, an increase in the flow velocity of the bed, a low weight of the recuperator, a smaller space requirement in the smoke channel, smaller pressure losses on the side of the combustion units, a smaller one Workload, easy cleaning and the possibility of free expansion of the pipes according to the prevailing temperature. The essence of the invention is explained in more detail using a practical embodiment of the subject matter of the invention shown in the drawing. 1 shows a section through the metal roll recuperator, FIG. 2 shows a detail of the design of the flat tube, FIG. 3 shows a detail of the loop suspension and the arrangement of individual rows of tubes.

Wie bereits erwähnt, ist der Metallrohr-Rekuperator 1 aus nahtlosen Rohren 2 kreisförmigen Querschnittes, die zu Rohren 3 ovalen Querschnittes abgeflacht sind, herfestellt. Die Rohre 3 ovalen Querschnittes sind in Form kontinuierlicher, 1(-förniger Schleifen angeordnet. Im mittleren Oberteil des Schleifenbogens ist der Rekuperator 1 an der horizontalen Tragplatte 4 aufgehängt. Iuittels der Schrauben 5 ist an' der horizontalen Tragplatte 4 das Blech 6 aufgehängt, an welchem die erste Rohrreihe 3 ovalen Querschnittes angeschlossen ist. Weitere Rohrreihen 3 ovalen Querschnittes sind aneinander mittels der Bleche ? derart angeschweißt, daß eine zusammenhängende Aufhängung ausgebildet wird, die eine Deformation der Schleife bei hoher Temperatur verhindert.-Die Schleifen münden in hohle Sammelbehälter ein, und zwar in das Eintrittsgehäuse 8 und in das Austrittsgehäuse 9, die oberhalb der horizontalen Tragplatte 4 angeordnet sind. Das Eintrittsgehäuse 8 ist in derselben horizontalebene wie das Austrittsgehäuse 9 ange- ordnet. Die Rohre 3 ovalen Querschnitte haben die Mglichkeit einer freien Ausdehnung in den unteren und oberen Bögen der Sehjeife. Zwischen der bogenförmigen %rümmung in dem unteren und dem oberen Teil der Schleifen sind die Distanzbleche 10,10' angeordnet, die eine konstante Teilung zwischen einzelnen Rohren 3 ova- len Querschnittes einhalten. Der Rekuperator 1 wird in den Abzugskanal 11, der mit einer Ausmauerung 12 versehen ist, eingelegt und durch-diesen strömen die ,heißen Verbrennungsprodukte aus dem Ofen (in den Zeichnungen nicht dargestellt) öder einer anderen Quelle der Abfallwärme. Die e=rfndungegemäße Ausführung des Rekuperators 1 ermöglicht eine wirksame Erhitzung des anfallenden liediume, das in der Regel Luft oder Gas ist. Der Wärmeübergang, , gegeben durch die Abflachung des Rohres, ist gegenüber dem kreieförmigen Rohrquerschnitt vorteilhafter. Die Verbrennungsprodu-cte strömen um die Schleifen herum rings um die Rohre 3 ovalen Querschnittes mit einem kleineren Widerstand, da der ovale Rohrquerechnitt in der Längsachse der Strömungsrichtung der Verbrennungeprodukte angeordnet ist. Die Rohre 3 ovalen Querschnittes sind versetzt angeordnet, wodurch auch ein intensiverer Wärmeiberg.ang erzielt -wird. Die erwähnten Aufhängung ermögiicht.-es, such eine größere Anzahl W-färmiger Schleifen zu-wiederholen, wobei man nur zwei Sammelgehäuse zu vernxenden -braucht. Die Schleife kann -aus einer bzw. mehreren Rohrreihen bestehen.As already mentioned, the metal pipe recuperator 1 is made from seamless pipes 2 of circular cross-section, which are flattened to form pipes 3 of oval cross-section. The tubes 3 of oval cross-section are arranged in the form of continuous, 1 (-förniger loops. In the middle upper part of the loop arch, the recuperator 1 is suspended from the horizontal support plate 4. By means of the screws 5, the sheet metal 6 is suspended from the horizontal support plate 4 to which the first row of tubes 3 of oval cross-section is connected. Further rows of tubes 3 of oval cross-section are welded to one another by means of the metal sheets - in such a way that a coherent suspension is formed which prevents deformation of the loop at high temperatures. namely in the inlet housing 8 and in the outlet housing 9, which are arranged above the horizontal support plate 4. The inlet housing 8 is arranged in the same horizontal plane as the outlet housing 9. The tubes 3 with oval cross-sections have the possibility of free expansion in the lower ones and upper arches of the Sehjeife, between the bo gene-shaped curvature in the lower and the upper part of the loops, the spacer plates 10, 10 'are arranged, which maintain a constant division between individual tubes 3 of oval cross-section. The recuperator 1 is placed in the exhaust duct 11, which is provided with a brick lining 12, and the hot combustion products from the furnace (not shown in the drawings) or another source of waste heat flow through this. The improper design of the recuperator 1 enables effective heating of the liedium produced, which is usually air or gas. The heat transfer, given by the flattening of the tube, is more advantageous than the circular tube cross-section. The combustion products flow around the loops around the tubes 3 of oval cross section with a smaller resistance, since the oval tube cross section is arranged in the longitudinal axis of the flow direction of the combustion products. The tubes 3 of oval cross-section are staggered, whereby a more intensive heat transfer is achieved. The above-mentioned suspension makes it possible - to search for a larger number of W-shaped loops - to repeat, whereby only two collecting housings are needed to be connected. The loop can consist of one or more rows of tubes.

Claims (1)

P a t e n t a n s p r u c h s letallrolir-Rekup.erator, bestehend aus Rohren ovaler Form, dadurch gekennzeichnet, daß nahtlose Rohre (3) ovalen Querschnittee, die zu kontinuierlichen d--förmigen Schleifen -zusarmengesetzt sind, im mittleren Oberteil der .Schleife aii der horizontalen Tragplatte (4) aufgehängt sind,.nn welcher ein Aufhängeblech (ö) an der Stelle. der größten Rohrkrümmung (3) ovalen Querschnittes angeschlossen 1-t, wobei an den der horizontalen Tragplatte (4) nächst angeordn-eten Bohren mittels der Bleche (7) weitere Rohrreihen (3) ovalen Querschnittee angeschweißt werden. Patent claim letallrolir-Rekup.erator, consisting of tubes of oval shape, characterized in that seamless tubes (3) oval cross-sections, which are put together to form continuous D-shaped loops, in the middle upper part of the loop aii of the horizontal support plate (4 ) are hung, .nn which a hanging plate (ö) at the point. 1-t connected to the largest pipe curvature (3) of oval cross-section, further rows (3) of oval cross-sections being welded to the holes next to the horizontal support plate (4) by means of the metal sheets (7).
DE19671551820 1966-01-15 1967-01-10 Metal pipe recuperator Pending DE1551820A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS25666 1966-01-15

Publications (1)

Publication Number Publication Date
DE1551820A1 true DE1551820A1 (en) 1970-03-19

Family

ID=5334343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671551820 Pending DE1551820A1 (en) 1966-01-15 1967-01-10 Metal pipe recuperator

Country Status (3)

Country Link
DE (1) DE1551820A1 (en)
FR (1) FR1507967A (en)
GB (1) GB1177532A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5425414A (en) * 1993-09-17 1995-06-20 Evapco International, Inc. Heat exchanger coil assembly
DE3645307C2 (en) * 1985-08-02 1997-07-03 Waermetechnik Gmbh Parallel serpentine heat exchange tubes in common plane
DE102012106782A1 (en) * 2012-07-26 2014-01-30 Halla Visteon Climate Control Corporation Heat exchanger for exhaust gas cooling in motor vehicles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907810C2 (en) * 1979-02-28 1985-07-04 MTU Motoren- und Turbinen-Union München GmbH, 8000 München Heat exchangers for conducting gases with widely differing temperatures
NL192367C (en) * 1984-03-26 1997-07-04 Braak Bv Geb Sugar cooker.
SE456935B (en) * 1984-05-24 1988-11-14 Armaturjonsson Ab HEAT EXCHANGER THERE FLOWING PLATES WITH STRILHAIR ARE PLACED IN EACH SLING OF A SERPENT INFORMATION PIPE AND SUITABLE FOR PREPARATION
NL1035755C2 (en) * 2008-07-25 2010-01-26 Gerke Houwer Heat-exchanger for exchanging heat between two media e.g. gas and liquid, has thin-walled tubes suspended in rack of suspension frame that is provided with hanging part, and harmonica-shaped folds formed along circumference of pipes
US9777963B2 (en) 2014-06-30 2017-10-03 General Electric Company Method and system for radial tubular heat exchangers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3645307C2 (en) * 1985-08-02 1997-07-03 Waermetechnik Gmbh Parallel serpentine heat exchange tubes in common plane
US5425414A (en) * 1993-09-17 1995-06-20 Evapco International, Inc. Heat exchanger coil assembly
US5799725A (en) * 1993-09-17 1998-09-01 Evapco International, Inc. Heat exchanger coil assembly
DE102012106782A1 (en) * 2012-07-26 2014-01-30 Halla Visteon Climate Control Corporation Heat exchanger for exhaust gas cooling in motor vehicles
US10254052B2 (en) 2012-07-26 2019-04-09 Hanon Systems S-bent tube cooler

Also Published As

Publication number Publication date
GB1177532A (en) 1970-01-14
FR1507967A (en) 1967-12-29

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