WO2011044596A1 - Device for heat-treating sheet metal strips - Google Patents

Device for heat-treating sheet metal strips Download PDF

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Publication number
WO2011044596A1
WO2011044596A1 PCT/AT2010/000313 AT2010000313W WO2011044596A1 WO 2011044596 A1 WO2011044596 A1 WO 2011044596A1 AT 2010000313 W AT2010000313 W AT 2010000313W WO 2011044596 A1 WO2011044596 A1 WO 2011044596A1
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WO
WIPO (PCT)
Prior art keywords
pipe
central tube
bends
tube
bridge
Prior art date
Application number
PCT/AT2010/000313
Other languages
German (de)
French (fr)
Inventor
Robert Ebner
Eduard Morbitzer
Original Assignee
Ebner Industrieofenbau Gesellschaft M.B.H.
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 Ebner Industrieofenbau Gesellschaft M.B.H. filed Critical Ebner Industrieofenbau Gesellschaft M.B.H.
Priority to US13/501,556 priority Critical patent/US20120223466A1/en
Priority to CA2776760A priority patent/CA2776760A1/en
Priority to RU2012119519/06A priority patent/RU2506496C2/en
Priority to EP10760210A priority patent/EP2488790A1/en
Priority to MX2012003805A priority patent/MX2012003805A/en
Priority to JP2012533429A priority patent/JP5542945B2/en
Priority to CN201080046114XA priority patent/CN102597621A/en
Publication of WO2011044596A1 publication Critical patent/WO2011044596A1/en
Priority to ZA2012/02059A priority patent/ZA201202059B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F23D14/126—Radiant burners cooperating with refractory wall surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D91/00—Burners specially adapted for specific applications, not otherwise provided for
    • F23D91/02—Burners specially adapted for specific applications, not otherwise provided for for use in particular heating operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/003—Baffles or deflectors for air or combustion products; Flame shields in flue gas ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/08—Helical or twisted baffles or deflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F27D99/0035—Heating indirectly through a radiant surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03009—Elongated tube-shaped combustion chambers

Definitions

  • the invention relates to a device for heat treatment of metal strip with at least one jet pipe unit, the three in a common, parallel to the sheet metal axial plane lying tubes, namely connectable to a burner center tube and two connected at both ends to the central tube via pipe bends outer tubes , And with a with the two pipe bends between the central tube on the one hand and the two outer tubes on the other hand connected to the bearing journal on the opposite side of the burner tube unit.
  • the bearing of the radiant tube unit is to be designed in such a way that the thermal expansions of the tubes in the axial direction are taken into account.
  • the central tube between the burner and the outer tubes is held axially in a pivot bearing, while at the opposite end of the jet tube unit, a usually hollow bearing pin, which is welded to the two connecting the ends of the central tube to the ends of the outer tubes pipe bends, axially displaceable in supported by a support.
  • the invention is therefore based on the object, a device of the type described for the heat treatment of metal bands in such a way that the thermal expansion in the region of the central tube connecting the outer tubes pipe bends can be considered when connecting the journal to these elbows.
  • the invention solves this problem by the fact that the bearing pin is arranged on a gusset bridging bridge between the two pipe bends with two sides on both sides of the axis of the central tube extending, inclined at an acute angle to the axis of the central tube sections.
  • the bridge By the bridge bridging the gusset area between the two pipe bends an advantageous condition for the absorption of thermal expansion in the area of the pipe bends is created, so that the connection between see the journals and the bridge can be kept largely tension-free.
  • the bridge prevents direct heat transfer from the pipe bends to the bearing journals, which reduces the heat load on the bearing journal.
  • the bridge has two sides of the axis of the central tube extending, under a pointed winding to the axis of the central tube inclined sections, so that by an angle change of each other at a staggered angle sections the bridge due to bending stresses occurring in the elastic region a sufficient length compensation at a thermal expansion of the pipe bends is possible.
  • FIG. 1 shows a device according to the invention for the heat treatment of metal strips in sections in the area of the jet tube unit in a simplified side view
  • the apparatus for heat treatment of metal strips at least one nozzle unit 1, which a Middle tube 2 and two with the central tube 2 lying in a common axial plane, parallel outer tubes 3 comprises.
  • the outer tubes 3 are fluidly connected to the central tube 2 in each case via end pipe bends 4.
  • the hot exhaust gases flowing into the central pipe 2 from a burner connected to an extension 5 of the center pipe 2 are thus partially recirculated via the two outer pipes 3.
  • a dash-dotted lines indicated sheet metal strip 6 is heated, which is guided parallel to the common axial plane of the tubes 2, 3, in a feed direction 7, which extends transversely to the tube axes.
  • the jet pipe unit 1 is mounted on both sides of the tubes 2 and 3, so that there is a largely uniform distribution of the weight load on the two supports. While the extension 5 of the central tube 2 receiving, not shown for reasons of clarity bearing 8 axially sets the jet pipe unit 1, supports the opposite support 8, the jet pipe unit 1 axially slidably from.
  • the jet pipe unit 1 carries at the opposite end of the extension 5 of the central tube 2 a usually tubular bearing pin 9 which is axially displaceably supported in a corresponding receptacle of the support 8. Due to the high exhaust gas temperatures within the tubes 2, 3, these tubes are subjected to a corresponding thermal expansion, whereby the thereby necessary axial length compensation is ensured via the bearing pin 8 displaceable in the bearing 8.
  • the bearing pin 9 is not attached directly to the pipe bends 4, but arranged on a bridge 10, which bridges the gusset region 11 between the two pipe bends 4. Thermal expansion of the pipe bends 4 can thus be compensated via this bridge.
  • the bridge 10 is formed for this purpose by two portions 12 which extend at an acute angle to the axis of the central tube 2 and together form an obtuse angle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Air Supply (AREA)
  • Tunnel Furnaces (AREA)

Abstract

The invention relates to a device for heat-treating sheet metal strips (6), comprising at least one steel pipe unit (1), which has three pipes lying in a common axial plane parallel to the sheet metal strip (6), namely a middle pipe (2) that can be connected to a burner and two outer pipes (3) that are connected at both ends to the middle pipe (2) by means of pipe bends (4), and a bearing journal (9) on the side of the steel pipe unit opposite the burner, the bearing journal being connected to the two pipe bends (4) between the middle pipe (2) on the one side and the two outer pipes (3) on the other side. In order to consider the thermal expansion that occurs in the area of the pipe bends (4), the bearing journal (9) is arranged on a bridge (10) that bridges a spandrel (11) between the two pipe bends (4), the bridge having two sections (12) that extend on either side of the axis of the middle pipe (2) and that are angled at an acute angle from the axis of the middle pipe (2).

Description

Vorrichtung zur Wärmebehandlung von Blechbändern  Apparatus for heat treatment of metal strips
Technisches Gebiet Technical area
Die Erfindung bezieht sich auf eine Vorrichtung zur Wärmebehandlung von Blechbändern mit wenigstens einer Strahlrohreinheit, die drei in einer gemeinsamen, zum Blechband parallelen Axialebene liegende Rohre, nämlich ein an einen Brenner anschließbares Mittelrohr und zwei an beiden Enden mit dem Mittelrohr über Rohrbögen verbundene Außenrohre, aufweist, und mit einem mit den beiden Rohrbögen zwischen dem Mittelrohr einerseits und den beiden Außenrohren anderseits verbundenen Lagerzapfen auf der dem Brenner gegenüberliegenden Seite der Strahlrohreinheit. The invention relates to a device for heat treatment of metal strip with at least one jet pipe unit, the three in a common, parallel to the sheet metal axial plane lying tubes, namely connectable to a burner center tube and two connected at both ends to the central tube via pipe bends outer tubes , And with a with the two pipe bends between the central tube on the one hand and the two outer tubes on the other hand connected to the bearing journal on the opposite side of the burner tube unit.
Stand der Technik State of the art
Zur Wärmebehandlung von Blechbändern ist es bekannt (DE 20 2008 009 065 U1), mit Hilfe von Brennern beheizbare Strahlrohreinheiten vorzusehen, die zwei von einem an den Brenner angeschlossenen Mittelrohr ausgehende, parallel zum Mittelrohr in einer gemeinsamen Axialebene liegende Außenrohre aufweisen, sodass mit Hilfe der endseitig über Rohrbögen mit dem Mittelrohr verbundenen Außenrohre jeweils ein Teilstrom der in das Mittelrohr strömenden heißen Abgase des Brenners im Kreislauf geführt werden kann. Das zu behandelnde Blechband, das parallel zur gemeinsamen Axialebene der Rohre der Strahlrohreinheit mit einer quer zu den Rohrachsen verlaufenden Vor- schubrichtung gefördert wird, wird über die von den Rohren der Strahlrohreinheit abgestrahlte Wärmestrahlung erwärmt. Wegen der hohen Temperaturen der Strahlrohre ist die Lagerung der Strahlrohreinheit so auszugestalten, dass die Wärmedehnungen der Rohre in axialer Richtung berücksichtigt werden. Zu diesem Zweck wird das Mittelrohr zwischen dem Brenner und den Außenrohren in einem Schwenklager axial festgehalten, während am gegenüberliegenden Ende der Strahlrohreinheit ein üblicherweise hohler Lagerzapfen, der an den beiden die Enden des Mittelrohrs mit den Enden der Außenrohre verbindenden Rohrbögen angeschweißt ist, axial verschiebbar in einem Auflager abgestützt wird. Da jedoch Wärmedehnungen nicht nur in Richtung der Rohrachsen, sondern auch im Bereich der Rohrbögen quer dazu auftreten, ergibt sich eine erhebliche Belastung der Schweißnähte zwischen den Lagerzapfen und den Rohrbögen, was die Gefahr einer Rissbildung mit sich bringt, zumal die Festigkeit der eingesetzten Stähle aufgrund der hohen Temperaturbelastung herabgesetzt ist. For heat treatment of metal strips, it is known (DE 20 2008 009 065 U1) to provide by means of burners heatable jet pipe units which have two outgoing from a central tube connected to the burner, parallel to the central tube in a common axial plane outer tubes, so with the aid of A partial flow of the hot exhaust gases of the burner flowing into the central tube can be circulated in each case at the ends via tube bends connected to the central tube. The sheet metal strip to be treated, which is parallel to the common axial plane of the tubes of the jet tube unit with a transverse to the tube axes Vorvor thrust is promoted, is heated by the radiated from the pipes of the jet pipe unit heat radiation. Because of the high temperatures of the radiant tubes, the bearing of the radiant tube unit is to be designed in such a way that the thermal expansions of the tubes in the axial direction are taken into account. For this purpose, the central tube between the burner and the outer tubes is held axially in a pivot bearing, while at the opposite end of the jet tube unit, a usually hollow bearing pin, which is welded to the two connecting the ends of the central tube to the ends of the outer tubes pipe bends, axially displaceable in supported by a support. However, since thermal expansions occur not only in the direction of the tube axes, but also in the area of the pipe bends transversely, there is a considerable load on the welds between the journals and the pipe bends, which brings the risk of cracking, especially as the strength of the steels used due the high temperature load is reduced.
Darstellung der Erfindung Presentation of the invention
Der Erfindung liegt somit die Aufgabe zugrunde, eine Vorrichtung der eingangs geschilderten Art zur Wärmebehandlung von Blechbändern so auszugestalten, dass die Wärmedehnungen im Bereich der das Mittelrohr mit den Außenrohren verbindenden Rohrbögen beim Anschluss des Lagerzapfens an diese Rohrbögen berücksichtigt werden können. The invention is therefore based on the object, a device of the type described for the heat treatment of metal bands in such a way that the thermal expansion in the region of the central tube connecting the outer tubes pipe bends can be considered when connecting the journal to these elbows.
Die Erfindung löst die gestellte Aufgabe dadurch, dass der Lagerzapfen auf einer einen Zwickel zwischen den beiden Rohrbögen überbrückenden Brücke mit zwei beidseits der Achse des Mittelrohrs verlaufenden, unter einem spitzen Winkel zur Achse des Mittelrohrs geneigten Abschnitten angeordnet ist. The invention solves this problem by the fact that the bearing pin is arranged on a gusset bridging bridge between the two pipe bends with two sides on both sides of the axis of the central tube extending, inclined at an acute angle to the axis of the central tube sections.
Durch die den Zwickelbereich zwischen den beiden Rohrbögen überbrückende Brücke wird eine vorteilhaft Voraussetzung für die Aufnahme von Wärmedehnungen im Bereich der Rohrbögen geschaffen, sodass die Verbindung zwi- sehen den Lagerzapfen und der Brücke weitgehend spannungsfrei gehalten werden kann. Dazu kommt, dass durch die Brücke ein unmittelbarer Wärmeübergang von den Rohrbögen auf den Lagerzapfen unterbunden wird, wodurch die Wärmebelastung des Lagerzapfens vermindert wird. Damit über die Brücke Wärmedehnungen im Bereich der beiden Rohrbögen vorteilhaft aufgenommen werden können, weist die Brücke zwei beidseits der Achse des Mittelrohrs verlaufende, unter einem spitzen Wickel zur Achse des Mittelrohrs geneigte Abschnitte auf, sodass durch eine Winkeländerung der zueinander unter einem stupfen Winkel geneigten Abschnitte der Brücke aufgrund im elastischen Bereich auftretender Biegebeanspruchungen ein ausreichender Längenausgleich bei einer Wärmedehnung der Rohrbögen möglich wird. By the bridge bridging the gusset area between the two pipe bends an advantageous condition for the absorption of thermal expansion in the area of the pipe bends is created, so that the connection between see the journals and the bridge can be kept largely tension-free. In addition, the bridge prevents direct heat transfer from the pipe bends to the bearing journals, which reduces the heat load on the bearing journal. So that over the bridge thermal expansions in the region of the two pipe bends can be advantageously taken, the bridge has two sides of the axis of the central tube extending, under a pointed winding to the axis of the central tube inclined sections, so that by an angle change of each other at a staggered angle sections the bridge due to bending stresses occurring in the elastic region a sufficient length compensation at a thermal expansion of the pipe bends is possible.
Besonders einfache Konstruktionsbedingungen ergeben sich in diesem Zusammenhang, wenn die Brücke symmetrisch zur Achse des Mittelrohrs ausgebildet ist, weil in diesem Fall die zum Mittelrohr koaxiale Lagerung der Strahleinheit in einfacher Weise sichergestellt werden kann. Particularly simple construction conditions arise in this context when the bridge is formed symmetrically to the axis of the central tube, because in this case the coaxial to the central tube storage of the jet unit can be ensured in a simple manner.
Kurze Beschreibung der Zeichnung Short description of the drawing
In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen In the drawing, the subject invention is shown, for example. Show it
Fig.1 eine erfindungsgemäße Vorrichtung zur Wärmebehandlung von Blechbändern ausschnittsweise im Bereich der Strahlrohreinheit in einer vereinfachten Seitenansicht und  1 shows a device according to the invention for the heat treatment of metal strips in sections in the area of the jet tube unit in a simplified side view and
Fig. 2 die Strahlrohreinheit ausschnittsweise im Bereich des Lagerzapfens in einer zum Teil aufgerissenen Seitenansicht in einem größeren Maßstab.  Fig. 2, the jet pipe unit fragmentary in the region of the journal in a partially torn side view on a larger scale.
Weg zur Ausführung der Erfindung Way to carry out the invention
Wie der Fig. 1 entnommen werden kann, weist die Vorrichtung zur Wärmebehandlung von Blechbändern wenigstens eine Strahlrohreinheit 1 auf, die ein Mittelrohr 2 und zwei mit dem Mittelrohr 2 in einer gemeinsamen Axialebene liegende, parallele Außenrohre 3 umfasst. Die Außenrohre 3 sind mit dem Mittelrohr 2 jeweils über endseitige Rohrbögen 4 strömungsverbunden. Die von einem an eine Verlängerung 5 des Mittelrohrs 2 angeschlossenen Brenner in das Mittelrohr 2 strömenden heißen Abgase werden somit über die beiden Außenrohre 3 teilweise im Kreislauf geführt. Mit Hilfe der von den Rohren 2, 3 abgestrahlten Strahlungswärme wird ein strichpunktiert angedeutetes Blechband 6 erwärmt, das parallel zur gemeinsamen Axialebene der Rohre 2, 3 geführt wird, und zwar in einer Vorschubrichtung 7, die quer zu den Rohrachsen verläuft. As can be seen from Fig. 1, the apparatus for heat treatment of metal strips at least one nozzle unit 1, which a Middle tube 2 and two with the central tube 2 lying in a common axial plane, parallel outer tubes 3 comprises. The outer tubes 3 are fluidly connected to the central tube 2 in each case via end pipe bends 4. The hot exhaust gases flowing into the central pipe 2 from a burner connected to an extension 5 of the center pipe 2 are thus partially recirculated via the two outer pipes 3. With the help of radiated from the tubes 2, 3 radiant heat a dash-dotted lines indicated sheet metal strip 6 is heated, which is guided parallel to the common axial plane of the tubes 2, 3, in a feed direction 7, which extends transversely to the tube axes.
Die Strahlrohreinheit 1 wird beidseits der Rohre 2 und 3 gelagert, sodass sich eine weitgehend gleichmäßige Aufteilung der Gewichtsbelastung auf die beiden Auflager ergibt. Während das die Verlängerung 5 des Mittelrohrs 2 aufnehmende, aus Übersichtlichkeitsgründen nicht dargestellte Auflager 8 die Strahlrohreinheit 1 axial festlegt, stütz das gegenüberliegende Auflager 8 die Strahlrohreinheit 1 axial verschiebbar ab. Zu diesem Zweck trägt die Strahlrohreinheit 1 an dem der Verlängerung 5 gegenüberliegenden Ende des Mittelrohrs 2 einen üblicherweise rohrförmigen Lagerzapfen 9, der axial verschiebbar in einer entsprechenden Aufnahme des Auflagers 8 abgestützt ist. Aufgrund der hohen Abgastemperaturen innerhalb der Rohre 2, 3 werden diese Rohre einer entsprechenden Wärmedehnung unterworfen, wobei der dadurch notwendige axiale Längenausgleich über den im Auflager 8 verschiebbaren Lagerzapfen 9 sichergestellt wird. Es unterliegen aber nicht nur die Rohre 2, 3, sondern auch die Rohrbögen 4 einer Wärmebelastung, was eine Wärmedehnung der Rohrbögen in Bogenlängsrichtung bedingt. Damit auch diese Wärmedehnungen im Bereich der Rohrbögen 4 berücksichtigt werden können, ist der Lagerzapfen 9 nicht unmittelbar an den Rohrbögen 4 befestigt, sondern an einer Brücke 10 angeordnet, die den Zwickelbereich 11 zwischen den beiden Rohrbögen 4 überbrückt. Über diese Brücke können somit Wärmedehnungen der Rohrbögen 4 ausgeglichen werden. Gemäß der Fig. 2 wird die Brücke 10 zu diesem Zweck durch zwei Abschnitte 12 gebildet, die unter einem spitzen Winkel zur Achse des Mittelrohrs 2 verlaufen und miteinander einen stumpfen Winkel einschließen. Ändert sich aufgrund von Wärmedehnungen der Rohrbögen 4 der Abstand der Schweißnähte zwischen den Abschnitten 12 und den Rohrbögen 4, so können diese Längenänderungen durch eine elastische Biegung und einer damit verbundenen Änderung der Winkellage der Abschnitte 12 ohne weiteres ausgeglichen werden. Dies bedeutet, dass die Schweißnähte zwischen den Abschnitten 12 der Brücke 10 und dem Lagerzapfen 9 von Verspannungen zufolge der Wärmedehnung der Rohrbögen 4 weitgehend frei bleiben, was die sonst gegebene Gefährdung der Verbindung des Lagerzapfens 9 mit den Rohrbögen 4 vermeidet. Dazu kommt, dass über die Abschnitte 12 der Brücke 10 der unmittelbare Wärmeübergang von den Rohrbögen 4 auf die Lagerzapfen 9 unterbrochen wird und daher mit einer geringeren Wärmebelastung des Lagerzapfens 9 gerechnet werden kann. The jet pipe unit 1 is mounted on both sides of the tubes 2 and 3, so that there is a largely uniform distribution of the weight load on the two supports. While the extension 5 of the central tube 2 receiving, not shown for reasons of clarity bearing 8 axially sets the jet pipe unit 1, supports the opposite support 8, the jet pipe unit 1 axially slidably from. For this purpose, the jet pipe unit 1 carries at the opposite end of the extension 5 of the central tube 2 a usually tubular bearing pin 9 which is axially displaceably supported in a corresponding receptacle of the support 8. Due to the high exhaust gas temperatures within the tubes 2, 3, these tubes are subjected to a corresponding thermal expansion, whereby the thereby necessary axial length compensation is ensured via the bearing pin 8 displaceable in the bearing 8. But not only the tubes 2, 3, but also the pipe bends 4 are subject to a heat load, which causes a thermal expansion of the pipe bends in the sheet longitudinal direction. So that these thermal expansions in the region of the pipe bends 4 can be taken into account, the bearing pin 9 is not attached directly to the pipe bends 4, but arranged on a bridge 10, which bridges the gusset region 11 between the two pipe bends 4. Thermal expansion of the pipe bends 4 can thus be compensated via this bridge. 2, the bridge 10 is formed for this purpose by two portions 12 which extend at an acute angle to the axis of the central tube 2 and together form an obtuse angle. Changes due to thermal expansion of the pipe bends 4, the distance between the welds between the sections 12 and the pipe bends 4, these changes in length can be compensated by an elastic bend and an associated change in the angular position of the sections 12 readily. This means that the welds between the sections 12 of the bridge 10 and the bearing pin 9 of tension due to the thermal expansion of the pipe bends 4 remain largely free, which avoids the otherwise given threat to the connection of the bearing pin 9 with the pipe bends 4. In addition, via the sections 12 of the bridge 10, the direct heat transfer from the pipe bends 4 to the bearing journals 9 is interrupted and can therefore be reckoned with a lower heat load on the bearing pin 9.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Vorrichtung zur Wärmebehandlung von Blechbändern (6) mit wenigstens einer Strahlrohreinheit (1), die drei in einer gemeinsamen, zum Blechband (6) parallelen Axialebene liegende Rohre, nämlich ein an einen Brenner anschließbares Mittelrohr (2) und zwei an beiden Enden mit dem Mittelrohr (2) über Rohrbögen (4) verbundene Außenrohre (3), aufweist, und mit einem mit den beiden Rohrbögen (4) zwischen dem Mittelrohr (2) einerseits und den beiden Außenrohren (3) anderseits verbundenen Lagerzapfen (9) auf der dem Brenner gegenüberliegenden Seite der Strahlrohreinheit, dadurch gekennzeichnet, dass der Lagerzapfen (9) auf einer einen Zwickel (11) zwischen den beiden Rohrbögen (4) überbrückenden Brücke (10) mit zwei beidseits der Achse des Mittelrohrs (2) verlaufenden, unter einem spitzen Winkel zur Achse des Mittelrohrs (2) geneigten Abschnitten (12) angeordnet ist. 1. A device for heat treatment of metal strips (6) with at least one jet pipe unit (1), the three lying in a common, the sheet metal strip (6) parallel axial plane, namely a connectable to a burner center tube (2) and two at both ends with the outer tube (3), connected to the central tube (2) via pipe bends (4), and with a bearing pin (9) on the other hand connected to the two tube bends (4) between the central tube (2) on the one hand and the two outer tubes (3) The burner pin opposite side of the jet pipe unit, characterized in that the bearing pin (9) on a gusset (11) between the two pipe bends (4) bridging bridge (10) with two on both sides of the axis of the central tube (2) extending, under a point Angle to the axis of the central tube (2) inclined portions (12) is arranged.
2. Vorrichtung nach einem der Anspruch 1 , dadurch gekennzeichnet, dass die Brücke (10) symmetrisch zur Achse des Mittelrohrs (2) ausgebildet ist. 2. Device according to one of claim 1, characterized in that the bridge (10) is formed symmetrically to the axis of the central tube (2).
PCT/AT2010/000313 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips WO2011044596A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US13/501,556 US20120223466A1 (en) 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips
CA2776760A CA2776760A1 (en) 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips
RU2012119519/06A RU2506496C2 (en) 2009-10-13 2010-08-30 Heat treatment device for coiled strips
EP10760210A EP2488790A1 (en) 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips
MX2012003805A MX2012003805A (en) 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips.
JP2012533429A JP5542945B2 (en) 2009-10-13 2010-08-30 Equipment for heat treatment of sheet metal strip
CN201080046114XA CN102597621A (en) 2009-10-13 2010-08-30 Device for heat-treating sheet metal strips
ZA2012/02059A ZA201202059B (en) 2009-10-13 2012-03-20 Device for heat-treating sheet metal strips

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0161009A AT508264B1 (en) 2009-10-13 2009-10-13 DEVICE FOR HEAT TREATMENT OF TAPE BANDS
ATA1610/2009 2009-10-13

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WO2011044596A1 true WO2011044596A1 (en) 2011-04-21

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US (1) US20120223466A1 (en)
EP (1) EP2488790A1 (en)
JP (1) JP5542945B2 (en)
KR (1) KR20120099399A (en)
CN (1) CN102597621A (en)
AT (1) AT508264B1 (en)
CA (1) CA2776760A1 (en)
MX (1) MX2012003805A (en)
RU (1) RU2506496C2 (en)
TW (1) TW201113480A (en)
WO (1) WO2011044596A1 (en)
ZA (1) ZA201202059B (en)

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AT508368B1 (en) 2009-10-13 2011-01-15 Ebner Ind Ofenbau DEVICE FOR HEAT TREATMENT OF TAPE BANDS
AT508264B1 (en) * 2009-10-13 2010-12-15 Ebner Ind Ofenbau DEVICE FOR HEAT TREATMENT OF TAPE BANDS
US9381787B2 (en) * 2012-10-26 2016-07-05 Hamilton Sundstrand Corporation Generally wye shaped elbow for cabin air flow system
ES2608158T5 (en) * 2013-01-02 2023-07-19 Massimiliano Bisson Support device for radiant tubes
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US4520789A (en) * 1982-03-26 1985-06-04 Rombouts Andre H Supports for heating bodies intended for annealing furnaces
EP0383687A1 (en) * 1989-02-17 1990-08-22 Stein Heurtey Radiant tube system for heating furnaces
DE202008009065U1 (en) 2008-07-04 2008-10-09 WS Wärmeprozesstechnik GmbH Radiant heating arrangement with delay compensation

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Also Published As

Publication number Publication date
EP2488790A1 (en) 2012-08-22
MX2012003805A (en) 2012-05-08
AT508264B1 (en) 2010-12-15
US20120223466A1 (en) 2012-09-06
RU2506496C2 (en) 2014-02-10
JP5542945B2 (en) 2014-07-09
AT508264A4 (en) 2010-12-15
RU2012119519A (en) 2013-11-20
CA2776760A1 (en) 2011-04-21
JP2013507598A (en) 2013-03-04
TW201113480A (en) 2011-04-16
KR20120099399A (en) 2012-09-10
CN102597621A (en) 2012-07-18
ZA201202059B (en) 2013-05-29

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