EP1899529A1 - Cylindre chauffe - Google Patents

Cylindre chauffe

Info

Publication number
EP1899529A1
EP1899529A1 EP06725323A EP06725323A EP1899529A1 EP 1899529 A1 EP1899529 A1 EP 1899529A1 EP 06725323 A EP06725323 A EP 06725323A EP 06725323 A EP06725323 A EP 06725323A EP 1899529 A1 EP1899529 A1 EP 1899529A1
Authority
EP
European Patent Office
Prior art keywords
cylinder according
heated
elevations
cylinder
cylinder jacket
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.)
Withdrawn
Application number
EP06725323A
Other languages
German (de)
English (en)
Inventor
Herbert Boden
Thomas Gruber-Nadlinger
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.)
Voith Patent GmbH
Original Assignee
Voith Patent 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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1899529A1 publication Critical patent/EP1899529A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Definitions

  • the invention relates to a heated cylinder for heating a paper, cardboard, tissue or another fibrous web in a machine for producing and / or finishing the same with a cylinder jacket, which is at least partially acted upon from the inside with a hot fluid.
  • drying cylinders have been known for a long time, with predominantly steam being used as the heating medium.
  • the thermal resistance of the cylinder jacket limits the transferable heat flow from the steam to the fibrous web that wraps around the cylinder.
  • the object of the invention is therefore to reduce the thermal resistance of the cylinder jacket.
  • the object has been achieved in that the inner surface of the cylinder jacket has the stability-enhancing elevations.
  • the wall thickness of the cylinder jacket outside the elevations can be significantly reduced without compromising the stability and strength of the cylinder.
  • Particularly stability-promoting are surveys that form a honeycomb or lattice structure.
  • the stability can be substantially improved if at least part of the elevations in the form of ribs or the like extends relatively far into the interior of the cylinder jacket. In this case, at least some, preferably all ribs should extend axially and / or radially.
  • the cylinder jacket should at least partially made of steel and / or in particular steel or gray cast iron in the interest of appropriate fatigue strength.
  • the wall thickness of the cylinder jacket is between 1 and 35 mm and in the case of steel between 5 and 40 mm during casting.
  • the elevations are made of the same material as the cylinder jacket, so the cylinder jacket and the surveys can advantageously be carried out in one piece.
  • the elevations and the cylinder jacket made of different materials.
  • the elevations should be attached to the cylinder jacket, preferably glued or soldered.
  • the elevations should at least partially, preferably predominantly protrude from the condensate film of the cylinder jacket. Because of the good thermal conductivity of the cylinder jacket and elevations, the condensate ring does not have a negative effect on the heat transfer.
  • the radial elevations do not run continuously over the entire circumference of the roll and in particular have openings or openings.
  • the production of the cylinder jacket is very simple if it is formed by a one-piece cylinder tube.
  • the cylinder jacket is formed by a plurality of segments arranged axially and / or radially next to one another and connected to one another.
  • the cylinder jacket At the ends of the cylinder jacket is mounted on one end disc on the axis of the cylinder. Since the cylinder jacket is relatively thin, it is advantageous if the cylinder jacket at the ends each has a front disk or an annular boundary for connection to an end disk and is preferably welded thereto. - A -
  • Figure 2 a schematic longitudinal section through another cylinder
  • Figure 3 a partial section through a roll end.
  • the heated cylinder is used to dry a fibrous web.
  • the fibrous web wraps around the cylinder, whereby it comes into contact with the hot cylinder jacket 1.
  • the heating of the cylinder jacket 1 is done from the inside with hot water vapor.
  • the heat transfer is also determined by the wall thickness of the cylinder jacket 1.
  • the wall thickness must be made relatively thick so far.
  • the cylinder jacket 1 according to FIGS. 1 and 2 has elevations in the form of ribs 2 of good heat-conducting material, which protrude from the condensate ring and thus substantially improve the heat transport from the vapor to the fibrous web.
  • These quadrangular segments 6 have radially inwardly extending side walls, which simultaneously form the ribs 2 of the cylinder jacket 1.
  • the cylinder jacket 1 itself is formed by connecting the axially and circumferentially juxtaposed segments 6. This connection is preferably made by connecting the side walls of the segments 6.
  • the resulting lattice-shaped rib structure with axially and radially extending ribs 2 improves the stability significantly, so that the cylinder jacket 1 can be made substantially thinner.
  • a wall thickness between 5 and 20 mm is sufficient.
  • the ribs 2 extending in the circumferential direction have apertures 5 in the region of the cylinder jacket 1.
  • the condensate can run through this to the roll ends in a radially extending collecting channel and be discharged from there, for example, via a stationary siphon.
  • the cylinder jacket 1 is formed by a tube which has a plurality of radially extending ribs 2 uniformly distributed on the inside over the width of the cylinder.
  • ribs 2 are already sufficient to increase the stability of the cylinder jacket 1 to the extent required and thus be able to reduce the wall thickness accordingly.
  • the ribs 2 are attached to the cylinder jacket 1, wherein ribs 2 and cylinder jacket 1 are made of steel.
  • the condensate could in this case be sucked through standing siphons between the ribs 2.
  • the cylinder jacket 1 is mounted on the axle via end disks 3 fastened at its ends.
  • the cylinder jacket 1 is relatively thin, this has, as shown in Figure 3, at its ends an annular boundary 4 in the form of a thickening.
  • the end plate 3 can be attached to the cylinder jacket 1.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne un cylindre chauffé permettant de chauffer une bande de papier, de carton, de tissu ou de tout autre matière fibreuse dans une machine destinée à la fabrication et/ou au façonnage de ladite bande, ledit cylindre présentant une enveloppe (1) soumise au moins partiellement de l'intérieur à l'action d'un fluide chaud. L'objectif de cette invention est de réduire la résistance thermique de l'enveloppe (1) du cylindre. A cet effet, la surface intérieure de cette enveloppe (1) présente des saillies augmentant la stabilité.
EP06725323A 2005-05-13 2006-03-27 Cylindre chauffe Withdrawn EP1899529A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510022237 DE102005022237A1 (de) 2005-05-13 2005-05-13 Beheizter Zylinder
PCT/EP2006/061054 WO2006120060A1 (fr) 2005-05-13 2006-03-27 Cylindre chauffe

Publications (1)

Publication Number Publication Date
EP1899529A1 true EP1899529A1 (fr) 2008-03-19

Family

ID=36588878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06725323A Withdrawn EP1899529A1 (fr) 2005-05-13 2006-03-27 Cylindre chauffe

Country Status (3)

Country Link
EP (1) EP1899529A1 (fr)
DE (1) DE102005022237A1 (fr)
WO (1) WO2006120060A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015014515A1 (fr) * 2013-08-01 2015-02-05 Voith Patent Gmbh Rouleau de séchage à grand cylindre et procédé permettant de produire un rouleau de séchage à grand cylindre
CN104611977B (zh) * 2015-02-10 2017-04-05 轻工业杭州机电设计研究院 钎焊带肋筋结构的造纸机烘缸及其制作方法
DE102017123541A1 (de) 2017-10-10 2019-04-11 Voith Patent Gmbh Trockenzylinder für eine Papiermaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE497034C (de) * 1930-05-01 Bernhard Wicky Drehbarer Trockenzylinder fuer Papier-, Textil- und aehnliche Maschinen
US1453113A (en) * 1922-02-18 1923-04-24 Int Paper Co Drying cylinder
US3217795A (en) * 1961-03-24 1965-11-16 Rice Barton Corp Rotary drum dryer
ZA841573B (en) * 1983-03-08 1984-10-31 Beloit Corp Rotary drying drum
US4674196A (en) * 1985-11-29 1987-06-23 Kmw Corporation Condensed steam agitator for a dryer cylinder and method
DE10112736B4 (de) * 2001-03-16 2004-07-08 Adolf Illig Maschinenbau Gmbh & Co.Kg Heizwalze für eine Heizeinrichtung zum Erwärmen einer Folienbahn aus thermoplastischem Kunststoff
JP3764720B2 (ja) * 2002-11-15 2006-04-12 三菱重工業株式会社 段ボールシート製造装置の加熱ロール

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006120060A1 *

Also Published As

Publication number Publication date
WO2006120060A1 (fr) 2006-11-16
DE102005022237A1 (de) 2006-11-16

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Legal Events

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