EP1079022A2 - Heated cylinder - Google Patents

Heated cylinder Download PDF

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Publication number
EP1079022A2
EP1079022A2 EP00106970A EP00106970A EP1079022A2 EP 1079022 A2 EP1079022 A2 EP 1079022A2 EP 00106970 A EP00106970 A EP 00106970A EP 00106970 A EP00106970 A EP 00106970A EP 1079022 A2 EP1079022 A2 EP 1079022A2
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EP
European Patent Office
Prior art keywords
cylinder
heated
heated cylinder
layer
heating
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Granted
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EP00106970A
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German (de)
French (fr)
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EP1079022B1 (en
EP1079022A3 (en
Inventor
Robert Wolf
Markus Oechsle
Frank Wegehaupt
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP1079022A3 publication Critical patent/EP1079022A3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
    • F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
    • F26B13/183—Arrangements for heating, cooling, condensate removal
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/021—Construction of the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/022—Heating the cylinders

Definitions

  • the invention relates to a heated cylinder for drying a fibrous web, in particular a paper, cardboard or tissue web in manufacturing machines and / or finishing the same, consisting of a cylinder jacket the outer Sheath layer has good thermal conductivity.
  • drying cylinders are generally known and are predominantly from the inside heated with steam. On the basis of induction heating technology, you can additionally external heating elements may be provided. This results in temperature compensation between the inside and the outside of the cylinder jacket, which is the maximum Surface temperature of the drying cylinder limited.
  • the object of the invention is therefore the maximum in a heated cylinder To increase surface temperature of the cylinder jacket and heat flow starting from the heating via the cylinder jacket to the fibrous web improve.
  • the object was achieved in that the outer cladding layer for heating at least one heating system arranged outside the cylinder is assigned and within the cylinder jacket to the outer jacket layer Thermal insulation layer connects.
  • This insulation prevents the flow of heat into it Inside of the cylinder, so that on the one hand higher surface temperatures are possible and on the other hand a large amount of heat from the heating system to the Fiber web can be delivered.
  • the insulation is also unnecessary the use of an internal heating of the cylinder jacket.
  • metal existing outer sheath layer should be as thin as possible. This also increases the maximum temperature difference between the different heating zones.
  • the aim is that the thickness the outer cladding layer is less than 30 mm, preferably less than 5 mm.
  • the outer Cladding layer has a thickness of less than 5 mm, preferably less than 1 mm and in particular less than 0.2 mm.
  • the support structure can consist of metal, but the thermal effect an induction heater is to be observed.
  • the insulating layer and / or the support structure at least a substantial part, preferably the entire interior of the cylinder to complete.
  • the diameter of the cylinder determines the one to be heated Shell surface, which limits the maximum diameter, and has on the other hand however, also affects the contact time with the fibrous web, resulting in a Minimum results. Particularly good results were obtained with cylinders whose diameters is in the range from 500 to 3000 mm, preferably between 1200 and 1800 mm, reached.
  • the optimal zone width is determined by the effort for Heating system and determined by the heat flow between the heating zones. Good results are at zone widths in the range of 30 to 100 mm, preferably in the range realizable between 40 and 75 mm.
  • the heat flow between the heating zones can still be thereby reduce that the outer cladding layer in the area between the heating zones has a reduced thickness. This can easily be done using a narrow, preferably outside and not the quality of the fibrous web impairing circumferential groove.
  • the maximum surface temperature of the cylinder should be between 120 and 250 ° C, preferably between 150 and 200 ° C.
  • the total available heating capacity up to a cylinder diameter of 1200 mm at least 60 kW / m, with a cylinder diameter between 1200 and 1800 mm at least 80 kW / m and with a cylinder diameter of more than 1800 mm is at least 120 KW / m.
  • the contact time of the cylinder with the fibrous web at least 50 ms, preferably at least 80 ms and in particular at least 120 ms.
  • All heated cylinders 1 here consist of a cylinder jacket whose outer, metallic cladding layer 3 has good thermal conductivity. Besides, this is Jacket layer 3 an inductive heating system 4 arranged outside of cylinder 1 assigned. To limit the heat flow closes within the Cylinder jacket to the outer jacket layer 3, a heat insulation layer 5.
  • the dimensional stability and strength of the cylinder 1 from the outer Cladding layer 3, which has an example of a thickness of 4 mm and also load-bearing insulating layer 5 guaranteed.
  • the Insulating layer 5 consists of fiber-reinforced plastic.
  • the manufacture of the cylinder 1 takes place by thermal shrinking of the metallic cladding layer 3 onto the Insulating layer 5.
  • the outer cladding layer 3 in FIG. 2 hardly has any more supporting function and can therefore be limited to a thickness of less than 1 mm become. This reduces the heat flow along the cylinder 1 so that larger ones Temperature differences on the surface of the jacket can be set.
  • the insulating layer 3 consists of a plastic with the lowest thermal conductivity adjoining within the cylinder jacket support structure 6 from a fiber-reinforced plastic, the support structure 6 a large part of the interior of the Fills cylinder 1. This enables a light and very stable support structure 6.
  • the cylinders 1 also have an example of a diameter of 1500 mm, wherein a contact time of 120 ms results from the guidance of the fibrous web 2.
  • the heating system 4 is along the cylinder 1 in several separately controllable heating zones 7 divided, the zone width is 50 mm. With an available heating capacity of 100 kW / m are surface temperatures of cylinder 1 of approximately 200 ° C reachable.
  • the thickness is outer cladding layer 3 between the heating zones 7 reduced. This is done via a very narrow circumferential groove 8 burned in from the outside with a laser. This improves the independence of the heating zones 7.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Die Erfindung betrifft einen beheizten Zylinder (1) zur Trocknung einer Faserstoffbahn (2), insbesondere einer Papier-, Karton-oder Tissuebahn in Maschinen zur Herstellung und/oder Veredelung derselben, bestehend aus einem Zylindermantel dessen äußere Mantelschicht (3) eine gute Wärmeleitfähigkeit aufweist. Davon ausgehend sollen die maximale Oberflächentemperatur erhöht und der Wärmefluß verbessert werden. Erreicht wird dies dadurch, daß der äußeren Mantelschicht (3) zur Beheizung wenigstens ein außerhalb des Zylinders (1) angeordnetes Heizsystem (4) zugeordnet ist und sich innerhalb des Zylindermantels an die äußere Mantelschicht (3) eine Wärme-Isolierschicht (5) anschließt. <IMAGE>The invention relates to a heated cylinder (1) for drying a fibrous web (2), in particular a paper, cardboard or tissue web in machines for producing and / or finishing the same, comprising a cylinder jacket, the outer jacket layer (3) of which has good thermal conductivity . Based on this, the maximum surface temperature should be increased and the heat flow should be improved. This is achieved in that at least one heating system (4) arranged outside the cylinder (1) is assigned to the outer jacket layer (3) for heating, and a heat-insulating layer (5) connects to the outer jacket layer (3) within the cylinder jacket. <IMAGE>

Description

Die Erfindung betrifft einen beheizten Zylinder zur Trocknung einer Faserstoffbahn, insbesondere einer Papier-, Karton-oder Tissuebahn in Maschinen zur Herstellung und/oder Veredelung derselben, bestehend aus einem Zylindermantel dessen äußere Mantelschicht eine gute Wärmeleitfähigkeit aufweist.The invention relates to a heated cylinder for drying a fibrous web, in particular a paper, cardboard or tissue web in manufacturing machines and / or finishing the same, consisting of a cylinder jacket the outer Sheath layer has good thermal conductivity.

Derartige Trockenzylinder sind allgemein bekannt und werden überwiegend von innen mit Dampf beheizt. Auf der Basis von Induktions-Heiztechnik können dabei zusätzlich äußere Heizelemente vorgesehen sein. Hierbei kommt es zum Temperaturausgleich zwischen der Innen-und der Außenseite des Zylindermantels, was die maximale Oberflächentemperatur des Trockenzylinders beschränkt.Such drying cylinders are generally known and are predominantly from the inside heated with steam. On the basis of induction heating technology, you can additionally external heating elements may be provided. This results in temperature compensation between the inside and the outside of the cylinder jacket, which is the maximum Surface temperature of the drying cylinder limited.

Außerdem haben diese metallischen Trockenzylinder aus Fertigungs- und Festigkeitsgründen eine große Manteldicke. Der damit verbundene geringe Wärmewiderstand begrenzt auch die maximale Temperaturdifferenz zwischen einzelnen Heizzonen entlang des Trockenzylinders. Hinzu kommt eine relativ lange Aufwärm- und Abkühlzeit des Zylindermantels.In addition, these metallic drying cylinders made from manufacturing and A large jacket thickness for reasons of strength. The associated low Thermal resistance also limits the maximum temperature difference between individual heating zones along the drying cylinder. Add to that a relatively long time Warming up and cooling down time of the cylinder jacket.

Die Aufgabe der Erfindung ist es daher, bei einem beheizten Zylinder die maximale Oberflächentemperatur des Zylindermantels zu erhöhen und den Wärmefluß ausgehend von der Heizung über den Zylindermantel zur Faserstoffbahn zu verbessern.The object of the invention is therefore the maximum in a heated cylinder To increase surface temperature of the cylinder jacket and heat flow starting from the heating via the cylinder jacket to the fibrous web improve.

Erfindungsgemäß wurde die Aufgabe dadurch gelöst, daß der äußeren Mantelschicht zur Heizung wenigstens ein außerhalb des Zylinders angeordnetes Heizsystem zugeordnet ist und sich innerhalb des Zylindermantels an die äußere Mantelschicht eine Wärme- Isolierschicht anschließt. Diese Isolierung verhindert den Wärmefluß in das Innere des Zylinders, so daß einerseits höhere Oberflächentemperaturen möglich sind und andererseits eine große Wärmemenge von dem Heizsystem ausgehend an die Faserstoffbahn abgegeben werden kann. Durch die Isolierung erübrigt sich ebenfalls der Einsatz einer Innenheizung des Zylindermantels. According to the invention the object was achieved in that the outer cladding layer for heating at least one heating system arranged outside the cylinder is assigned and within the cylinder jacket to the outer jacket layer Thermal insulation layer connects. This insulation prevents the flow of heat into it Inside of the cylinder, so that on the one hand higher surface temperatures are possible and on the other hand a large amount of heat from the heating system to the Fiber web can be delivered. The insulation is also unnecessary the use of an internal heating of the cylinder jacket.

Zur Verringerung der Aufwärm-und Abkühlzeiten sollte die vorzugsweise aus Metall bestehende äußere Mantelschicht möglichst dünn sein. Dies erhöht außerdem die maximale Temperaturdifferenz zwischen den verschiedenen Heizzonen.To reduce warm-up and cool-down times, it should preferably be made of metal existing outer sheath layer should be as thin as possible. This also increases the maximum temperature difference between the different heating zones.

Selbst für den Fall, daß die Formstabilität und Festigkeit des Zylinders noch wesentlich von der äußeren Mantelschicht mitbestimmt werden soll, ist anzustreben, daß die Dicke der äußeren Mantelschicht unter 30 mm, vorzugsweise unter 5 mm liegt.Even in the event that the dimensional stability and strength of the cylinder are still essential should be determined by the outer cladding layer, the aim is that the thickness the outer cladding layer is less than 30 mm, preferably less than 5 mm.

Falls jedoch die Formstabilität und Festigkeit des Zylinders im wesentlichen von der Isolierschicht und/oder einer sich innerhalb des Zylindermantels an die Isolierschicht anschließender Tragstruktur bestimmt wird, so ist es von Vorteil, wenn die äußere Mantelschicht eine Dicke von weniger als 5 mm, vorzugsweise weniger als 1 mm und insbesondere von weniger als 0,2 mm aufweist.However, if the dimensional stability and strength of the cylinder substantially from the Insulating layer and / or one within the cylinder jacket to the insulating layer subsequent support structure is determined, it is advantageous if the outer Cladding layer has a thickness of less than 5 mm, preferably less than 1 mm and in particular less than 0.2 mm.

Die Tragstruktur kann dabei aus Metall bestehen, wobei jedoch die thermische Wirkung einer Induktionsheizung zu beachten ist.The support structure can consist of metal, but the thermal effect an induction heater is to be observed.

Leichtere Zylinder ergeben sich jedoch im allgemeinen, wenn die tragende Isolierschicht und/oder die Tragstruktur aus einem faserverstärkten, thermisch isolierenden Kunststoff bestehen. Dies bedeutet, daß diese Isolierschicht und die Tragstruktur auch ein einziges, gegebenenfalls strukturiertes oder mehrschichtiges Element des Zylindermantels bilden können.Lighter cylinders, however, generally result when the load bearing Insulating layer and / or the support structure made of a fiber-reinforced, thermal insulating plastic. This means that this insulating layer and the Support structure also a single, optionally structured or multilayer Can form element of the cylinder jacket.

Unter Umständen können sich auch Vorteile hinsichtlich der Stabilität und Festigkeit oder der Fertigung ergeben, wenn die Isolierschicht und/oder die Tragstruktur zumindest einen wesentlichen Teil, vorzugsweise den ganzen Innenraum des Zylinders ausfüllen. There may also be advantages in terms of stability and strength or manufacture if the insulating layer and / or the support structure at least a substantial part, preferably the entire interior of the cylinder to complete.

Der Durchmesser des Zylinders bestimmt einerseits die zu erwärmende Manteloberfläche, was den maximalen Durchmesser begrenzt, und hat andererseits jedoch auch Einfluß auf die Kontaktzeit mit der Faserstoffbahn, wodurch sich ein Minimum ergibt. Besonders gute Ergebnisse wurden mit Zylindern, deren Durchmesser im Bereich von 500 bis 3000 mm, vorzugsweise zwischen 1200 und 1800 mm liegt, erreicht.The diameter of the cylinder determines the one to be heated Shell surface, which limits the maximum diameter, and has on the other hand however, also affects the contact time with the fibrous web, resulting in a Minimum results. Particularly good results were obtained with cylinders whose diameters is in the range from 500 to 3000 mm, preferably between 1200 and 1800 mm, reached.

Zur Profilierung der Feuchteverteilung quer zur Faserstoffbahn sollte das vorzugsweise als Infrarot-und/oder Induktionsheizung aufgebaute Heizsystem entlang des Zylinders mehrere, separat steuerbare Heizzonen besitzen, deren Zonenbreite vorzugsweise geringer als 200 mm sein sollte. Die optimale Zonenbreite wird vom Aufwand für das Heizsystem und vom Wärmefluß zwischen den Heizzonen bestimmt. Gute Ergebnisse sind bei Zonenbreiten im Bereich von 30 bis 100 mm, vorzugsweise im Bereich zwischen 40 und 75 mm realisierbar.This should preferably be used to profile the moisture distribution across the fibrous web heating system constructed as an infrared and / or induction heater along the cylinder have several, separately controllable heating zones, the zone width of which is preferred should be less than 200 mm. The optimal zone width is determined by the effort for Heating system and determined by the heat flow between the heating zones. Good results are at zone widths in the range of 30 to 100 mm, preferably in the range realizable between 40 and 75 mm.

In diesem Zusammenhang läßt sich der Wärmestrom zwischen den Heizzonen noch dadurch verringern, daß die äußere Mantelschicht im Bereich zwischen den Heizzonen eine verringerte Dicke besitzt. Dies kann auf einfache Weise über eine schmale, vorzugsweise außen verlaufende und die Qualität der Faserstoffbahn nicht beeinträchtigende Umfangsrille erfolgen.In this context, the heat flow between the heating zones can still be thereby reduce that the outer cladding layer in the area between the heating zones has a reduced thickness. This can easily be done using a narrow, preferably outside and not the quality of the fibrous web impairing circumferential groove.

Zur effizienten Beeinflussung der Feuchteverteilung oder Trocknung der Faserstoffbahn insgesamt und unter Vermeidung von Hitzeschäden an der Faserstoffbahnoberfläche sollte die maximale Oberflächentemperatur des Zylinders zwischen 120 und 250 °C, vorzugsweise zwischen 150 und 200 °C liegen. Hierzu ist es meist erforderlich, daß die gesamte, verfügbare Heizteistung bis zu einem Zylinderdurchmesser von 1200 mm mindestens 60 kW/m, bei einem Zylinderdurchmesser zwischen 1200 und 1800 mm mindestens 80 kW/m und bei einem Zylinderdurchmesser von mehr als 1800 mm mindestens 120 KW/m beträgt. For efficiently influencing the moisture distribution or drying of the fibrous web overall and avoiding heat damage to the fibrous web surface the maximum surface temperature of the cylinder should be between 120 and 250 ° C, preferably between 150 and 200 ° C. For this it is usually necessary that the total available heating capacity up to a cylinder diameter of 1200 mm at least 60 kW / m, with a cylinder diameter between 1200 and 1800 mm at least 80 kW / m and with a cylinder diameter of more than 1800 mm is at least 120 KW / m.

Außerdem sollte zur Gewährleistung eines ausreichenden Wärmeflusses zur Faserstoffbahn die Kontaktzeit des Zylinders mit der Faserstoffbahn mindestens 50 ms, vorzugsweise mindestens 80 ms und insbesondere mindestens 120 ms betragen.In addition, to ensure sufficient heat flow for Fibrous web the contact time of the cylinder with the fibrous web at least 50 ms, preferably at least 80 ms and in particular at least 120 ms.

Nachfolgend soll Erfindung an mehreren Ausführungsbeispielen näher erläutert werden. In der beigefügten Zeichnung zeigt:

  • Figur 1: einen schematischen Querschnitt eines Zylinders 1 mit tragender Isolierschicht 5;
  • Figur 2: einen schematischen Querschnitt eines Zylinders 1 mit Isolierschicht 5 und Tragstruktur 6 und
  • Figur 3: eine schematische Draufsicht eines Zylinders 1.
    • In the following, the invention will be explained in more detail using several exemplary embodiments. The attached drawing shows:
  • 1 shows a schematic cross section of a cylinder 1 with a load-bearing insulating layer 5;
  • Figure 2 shows a schematic cross section of a cylinder 1 with insulating layer 5 and support structure 6 and
  • FIG. 3: a schematic top view of a cylinder 1.

    • Alle beheizten Zylinder 1 bestehen hier aus einem Zylindermantel dessen äußere, metallische Mantelschicht 3 eine gute Wärmeleitfähigkeit aufweist. Außerdem ist dieser Mantelschicht 3 ein außerhalb des Zylinders 1 angeordnetes, induktives Heizsystem 4 zugeordnet. Zur Begrenzung des Wärmeflusses schließt sich innerhalb des Zylindermantels an die äußere Mantelschicht 3 eine Wärme-Isolierschicht 5 an.All heated cylinders 1 here consist of a cylinder jacket whose outer, metallic cladding layer 3 has good thermal conductivity. Besides, this is Jacket layer 3 an inductive heating system 4 arranged outside of cylinder 1 assigned. To limit the heat flow closes within the Cylinder jacket to the outer jacket layer 3, a heat insulation layer 5.

    In Figur 1 wird die Formstabilität und Festigkeit des Zylinders 1 von der äußeren Mantelschicht 3, die beispielhaft eine Dicke von 4 mm aufweist und der ebenfalls tragenden Isolierschicht 5 gewährleistet. Dies vereinfacht den Aufbau, wobei die Isolierschicht 5 aus faserverstärktem Kunststoff besteht. Die Herstellung des Zylinders 1 erfolgt durch thermisches Aufschrumpfen der metallischen Mantelschicht 3 auf die Isolierschicht 5.In Figure 1, the dimensional stability and strength of the cylinder 1 from the outer Cladding layer 3, which has an example of a thickness of 4 mm and also load-bearing insulating layer 5 guaranteed. This simplifies the structure, the Insulating layer 5 consists of fiber-reinforced plastic. The manufacture of the cylinder 1 takes place by thermal shrinking of the metallic cladding layer 3 onto the Insulating layer 5.

    Im Gegensatz hierzu hat die äußere Mantelschicht 3 in Figur 2 kaum noch eine tragende Funktion und kann daher auf eine Dicke von weniger als 1 mm beschränkt werden. Dies verringert den Wärmefluß entlang des Zylinders 1, so daß größere Temperaturunterschiede an der Manteloberfläche eingestellt werden können.In contrast to this, the outer cladding layer 3 in FIG. 2 hardly has any more supporting function and can therefore be limited to a thickness of less than 1 mm become. This reduces the heat flow along the cylinder 1 so that larger ones Temperature differences on the surface of the jacket can be set.

    Die Isolierschicht 3 besteht aus einem Kunststoff geringster Wärmeleitfähigkeit und eine sich innerhalb des Zylindermantels daran anschließende Tragstruktur 6 aus einem faserverstärkten Kunststoff, wobei die Tragstruktur 6 einen großen Teil des Inneren des Zylinders 1 ausfüllt. Dies ermöglicht eine leichte und sehr stabile Tragstruktur 6.The insulating layer 3 consists of a plastic with the lowest thermal conductivity adjoining within the cylinder jacket support structure 6 from a fiber-reinforced plastic, the support structure 6 a large part of the interior of the Fills cylinder 1. This enables a light and very stable support structure 6.

    Die Zylinder 1 haben ebenfalls beispielhaft einen Durchmesser von 1500 mm, wobei sich durch die Führung der Faserstoffbahn 2 eine Kontaktzeit von 120 ms ergibt.The cylinders 1 also have an example of a diameter of 1500 mm, wherein a contact time of 120 ms results from the guidance of the fibrous web 2.

    Das Heizsystem 4 ist entlang des Zylinders 1 in mehrere separat steuerbare Heizzonen 7 unterteilt, wobei die Zonenbreite 50 mm beträgt. Bei einer verfügbaren Heizleistung von 100 kW/m sind Oberflächentemperaturen des Zylinders 1 von ca. 200 °C erreichbar.The heating system 4 is along the cylinder 1 in several separately controllable heating zones 7 divided, the zone width is 50 mm. With an available heating capacity of 100 kW / m are surface temperatures of cylinder 1 of approximately 200 ° C reachable.

    Um den Wärmefluß zwischen den Heizzonen 7 zu beschränken, ist die Dicke der äußeren Mantelschicht 3 zwischen den Heizzonen 7 verringert. Dies erfolgt über eine sehr schmale, von außen mit einem Laser eingebrannte Umfangsrille 8. Dies verbessert die Unabhängigkeit der Heizzonen 7.In order to limit the heat flow between the heating zones 7, the thickness is outer cladding layer 3 between the heating zones 7 reduced. This is done via a very narrow circumferential groove 8 burned in from the outside with a laser. This improves the independence of the heating zones 7.

    Claims (17)

    Beheizten Zylinder (1) zur Trocknung einer Faserstoffbahn (2), insbesondere einer Papier-, Karton-oder Tissuebahn in Maschinen zur Herstellung und/oder Veredelung derselben, bestehend aus einem Zylindermantel dessen äußere Mantelschicht (3) eine gute Wärmeleitfähigkeit aufweist, dadurch gekennzeichnet, daß
    der äußeren Mantelschicht (3) zur Beheizung wenigstens ein außerhalb des Zylinders (1) angeordnetes Heizsystem (4) zugeordnet ist und sich innerhalb des Zylindermantels an die äußere Mantelschicht (3) eine Wärme-Isolierschicht (5) anschließt.    Heated cylinder (1) for drying a fibrous web (2), in particular a paper, cardboard or tissue web in machines for producing and / or finishing the same, consisting of a cylinder jacket, the outer jacket layer (3) of which has good thermal conductivity, characterized in that that
    the outer jacket layer (3) for heating is assigned at least one heating system (4) arranged outside the cylinder (1) and a heat insulation layer (5) is connected to the outer jacket layer (3) within the cylinder jacket.         Beheizter Zylinder (1) nach Anspruch 1, dadurch gekennzeichnet, daß
    die Formstabilität und Festigkeit des Zylinders (1) wesentlich von der vorzugsweise aus Metall bestehenden, äußeren Mantelschicht (3) bestimmt wird.    Heated cylinder (1) according to claim 1, characterized in that
    the dimensional stability and strength of the cylinder (1) is essentially determined by the outer jacket layer (3), which is preferably made of metal.         Beheizter Zylinder (1) nach Anspruch 2, dadurch gekennzeichnet, daß
    die äußere Mantelschicht (3) eine Dicke von weniger als 30 mm, vorzugsweise von weniger als 5 mm besitzt.    Heated cylinder (1) according to claim 2, characterized in that
    the outer cladding layer (3) has a thickness of less than 30 mm, preferably less than 5 mm.         Beheizter Zylinder (1) nach Anspruch 1, dadurch gekennzeichnet, daß
    die Formstabilität und Festigkeit des Zylinders (1) im wesentlichen von der Isolierschicht (5) und/oder einer sich innerhalb des Zylindermantels an die Isolierschicht (5) anschließenden Tragstruktur (6) bestimmt wird.    Heated cylinder (1) according to claim 1, characterized in that
    the dimensional stability and strength of the cylinder (1) is essentially determined by the insulating layer (5) and / or a supporting structure (6) adjoining the insulating layer (5) within the cylinder jacket.         Beheizter Zylinder (1) nach Anspruch 4, dadurch gekennzeichnet, daß
    die Tragstruktur (6) aus Metall besteht.    Heated cylinder (1) according to claim 4, characterized in that
    the support structure (6) consists of metal.         Beheizter Zylinder (1) nach Anspruch 4, dadurch gekennzeichnet, daß
    die tragende Isolierschicht (5) und/oder die Tragstruktur (6) aus einem faserverstärkten Kunststoff bestehen.     Heated cylinder (1) according to claim 4, characterized in that
    the load-bearing insulating layer (5) and / or the load-bearing structure (6) consist of a fiber-reinforced plastic.         Beheizter Zylinder (1) nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß
    die äußere Mantelschicht (3) eine Dicke von weniger als 5 mm, vorzugsweise weniger als 1 mm und insbesondere von weniger als 0,2 mm aufweist.    Heated cylinder (1) according to one of claims 4 to 6, characterized in that
    the outer cladding layer (3) has a thickness of less than 5 mm, preferably less than 1 mm and in particular less than 0.2 mm.         Beheizter Zylinder (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    die Isolierschicht (5) und/oder die Tragstruktur (6) zumindest einen wesentlichen Teil, vorzugsweise den ganzen Innenraum des Zylinders (1) ausfüllen.    Heated cylinder (1) according to one of the preceding claims, characterized in that
    the insulating layer (5) and / or the supporting structure (6) fill at least a substantial part, preferably the entire interior of the cylinder (1).         Beheizter Zylinder (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Durchmesser des Zylinders (1) im Bereich von 500 bis 3000 mm, vorzugsweise Bereich von 1200 bis 1800 mm liegt.Heated cylinder (1) according to one of the preceding claims, characterized in that the diameter of the cylinder (1) is in the range from 500 to 3000 mm, preferably in the range from 1200 to 1800 mm. Beheizter Zylinder (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Heizsystem (4) als Infrarot-und/oder Induktionsheizung aufgebaut ist.Heated cylinder (1) according to one of the preceding claims, characterized in that the heating system (4) is constructed as an infrared and / or induction heater. Beheizter Zylinder (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Heizsystem (4) entlang des Zylinders (1) mehrere, separat steuerbare Heizzonen (7) besitzt, wobei die Zonenbreite kleiner als 200 mm sein sollte.Heated cylinder (1) according to one of the preceding claims, characterized in that the heating system (4) along the cylinder (1) has a plurality of separately controllable heating zones (7), the zone width should be less than 200 mm. Beheizter Zylinder (1) nach Anspruch 11, dadurch gekennzeichnet, daß
    die Zonenbreite im Bereich von 30 bis 100 mm, vorzugsweise Bereich von 40 bis 75 mm liegt.    Heated cylinder (1) according to claim 11, characterized in that
    the zone width is in the range from 30 to 100 mm, preferably in the range from 40 to 75 mm.         Beheizter Zylinder (1) nach Anspruch 11 oder Anspruch 12, dadurch gekennzeichnet, daß die äußere Mantelschicht (3) im Bereich zwischen den Heizzonen (7) eine verringerte Dicke besitzt.Heated cylinder (1) according to claim 11 or claim 12, characterized in that the outer jacket layer (3) has a reduced thickness in the area between the heating zones (7). Beheizter Zylinder (1) nach Anspruch 13, dadurch gekennzeichnet, daß
    die Dickenverringerung der äußeren Mantelschicht (3) die Form einer schmalen, vorzugsweise außen verlaufenden Umfangsrille (8) hat.    Heated cylinder (1) according to claim 13, characterized in that
    the reduction in thickness of the outer cladding layer (3) has the shape of a narrow, preferably outer circumferential groove (8).         Anwendung des beheizten Zylinders (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    die maximale Oberflächentemperatur des Zylinders (1) zwischen 120 und 250 °C, vorzugsweise zwischen 150 und 200 °C liegt.    Use of the heated cylinder (1) according to one of the preceding claims, characterized in that
    the maximum surface temperature of the cylinder (1) is between 120 and 250 ° C, preferably between 150 and 200 ° C.         Anwendung des beheizten Zylinders (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    die gesamte, verfügbare Heizleistung bis zu einem Zylinderdurchmesser von 1200 mm mindestens 60 kW/m, bei einem Zylinderdurchmesser zwischen 1200 und 1800 mm mindestens 80 kW/m und bei einem Zylinderdurchmesser von mehr als 1800 mm mindestens 120 kW/m beträgt.    Use of the heated cylinder (1) according to one of the preceding claims, characterized in that
    the total available heating capacity up to a cylinder diameter of 1200 mm is at least 60 kW / m, for a cylinder diameter between 1200 and 1800 mm at least 80 kW / m and for a cylinder diameter of more than 1800 mm at least 120 kW / m.         Anwendung des beheizten Zylinders (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß
    die Kontaktzeit des Zylinders (1) mit der Faserstoffbahn (2) mindestens 50 ms, vorzugsweise mindestens 80 ms und insbesondere mindestens 120 ms beträgt.    Use of the heated cylinder (1) according to one of the preceding claims, characterized in that
    the contact time of the cylinder (1) with the fibrous web (2) is at least 50 ms, preferably at least 80 ms and in particular at least 120 ms.
    EP00106970A 1999-06-28 2000-04-01 Heated cylinder Expired - Lifetime EP1079022B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19929520A DE19929520A1 (en) 1999-06-28 1999-06-28 Heated cylinder to dry a fiber web has a mantle cladding with good thermal conductivity to transfer heat from an external heater to the web surface and give the cylinder shape stability and strength
    DE19929520 1999-08-26

    Publications (3)

    Publication Number Publication Date
    EP1079022A2 true EP1079022A2 (en) 2001-02-28
    EP1079022A3 EP1079022A3 (en) 2001-07-11
    EP1079022B1 EP1079022B1 (en) 2006-07-26

    Family

    ID=7912785

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00106970A Expired - Lifetime EP1079022B1 (en) 1999-06-28 2000-04-01 Heated cylinder

    Country Status (3)

    Country Link
    US (1) US6487789B1 (en)
    EP (1) EP1079022B1 (en)
    DE (2) DE19929520A1 (en)

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    DE10123809A1 (en) * 2001-05-16 2002-11-21 Voith Paper Patent Gmbh Through-flow cylinder for tissue drying plant, comprises fiber-reinforced plastic
    FI117013B (en) * 2004-07-28 2006-05-15 Metso Paper Inc Roll for use with a drying section in a forming machine
    DE102005058577B4 (en) * 2005-12-08 2014-05-22 Sartorius Stedim Biotech Gmbh Apparatus for removing volatile media from web materials
    DE102005063563B3 (en) * 2005-12-08 2014-08-28 Sartorius Stedim Biotech Gmbh Device for removing volatile media from sheet materials has wall of cylinder provided at least in outer region with porous material which is heatable
    AU2012204057B2 (en) * 2005-12-23 2014-12-18 Asf-Keystone, Inc Railroad train monitoring system
    US8826560B2 (en) * 2006-09-01 2014-09-09 Kadant Inc. Support apparatus for supporting a syphon
    FR3012822B1 (en) * 2013-11-07 2016-09-09 Danube Int DEVICE FOR DRYING AND IRONING TEXTILE PIECES
    CN104990376B (en) * 2015-06-25 2017-06-20 苏州迪盛织造整理有限公司 One kind slurry silk electromechanics magnetic Drying
    AT525162B1 (en) * 2022-05-03 2023-01-15 Andritz Ag Maschf CYLINDER FOR DRYING A FIBROUS WEB

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    Also Published As

    Publication number Publication date
    DE50013218D1 (en) 2006-09-07
    EP1079022B1 (en) 2006-07-26
    EP1079022A3 (en) 2001-07-11
    US6487789B1 (en) 2002-12-03
    DE19929520A1 (en) 2001-01-04

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