EP3017110A1 - Cylindre sécheur et son procédé de fabrication - Google Patents

Cylindre sécheur et son procédé de fabrication

Info

Publication number
EP3017110A1
EP3017110A1 EP14727515.0A EP14727515A EP3017110A1 EP 3017110 A1 EP3017110 A1 EP 3017110A1 EP 14727515 A EP14727515 A EP 14727515A EP 3017110 A1 EP3017110 A1 EP 3017110A1
Authority
EP
European Patent Office
Prior art keywords
cylinder jacket
weld
lids
lid
drying roller
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.)
Granted
Application number
EP14727515.0A
Other languages
German (de)
English (en)
Other versions
EP3017110B1 (fr
Inventor
Marco BRUJAS
Robson CONSOLATO
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
Priority to EP17153733.5A priority Critical patent/EP3196356B1/fr
Publication of EP3017110A1 publication Critical patent/EP3017110A1/fr
Application granted granted Critical
Publication of EP3017110B1 publication Critical patent/EP3017110B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • D21F5/022—Heating the cylinders
    • D21F5/028—Heating the cylinders using steam
    • 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 drying rollers, which consist at least of a cylindrical cylinder jacket, two attached on both sides of the cylinder jacket covers and two indirectly via a hollow shaft connected to the lids or directly attached to the lids pin, wherein the cylinder jacket and the lid by a annular weld welded together.
  • a drying roller or drying cylinder for the drying of webs of pulp or paper which comprises a jacket and arranged at the ends of the jacket lid.
  • the sheat seam on the side facing away from the jacket edge on a transition piece, seen in an axial section through the cylinder in the seam region has approximately the strength of the shell, wherein the transition piece and the sheath in Seam area have a steady course.
  • US 2010/0132903 A1 shows a steel-made drying roll of similar construction in which lids are welded to the ends of a cylinder jacket by means of a circumferential weld formed between opposed surfaces of each of the lids and the cylinder jacket ,
  • the weld consists of a recess of U-shaped cross-section open towards the outer surface of the cylinder jacket, which is formed by respective depressions between a respective end of the cylinder jacket and one of the lids and filled by welding material, whereby a counter-bead forms on the inner surface of the cylinder jacket at the level of the recess is provided.
  • the invention is based on the common inventive basic idea to ensure the quality of the weld seam between cylinder jacket and cover by a suitable design of the cylinder jacket and the cover in the vicinity of the weld.
  • a drying roller may consist of at least one cylindrical cylinder jacket, two lids attached to both sides of the cylinder jacket, and two indirectly via a hollow shaft connected to the lids or pins secured directly to the lids, the cylinder jacket and lids being formed by an annular weld welded together, and wherein the weld has a joint with at least two mutually opposite and spaced parallel flank regions.
  • Such a drying roller may be adapted for various uses during papermaking or for drying various types of paper.
  • the drying roller may in particular be a so-called Yankee roller, which is provided for drying so-called tissue papers or tissue papers or soft papers.
  • so-called MG-rollers ⁇ machine glazed) for the production of machine-smooth papers are executable with such drying rollers.
  • the drying roller can be used in the production of cardboard papers or graphic papers.
  • Yankee rolls and MG rolls have two spigots attached indirectly via a hollow shaft connected to the covers, while dry rolls for producing cardboard papers or graphic papers often have spigots secured directly to the covers.
  • the material to be dried such as paper or paperboard
  • the material to be dried usually has direct contact with the outer surface of the cylinder jacket, which may at least partially have a smooth surface on the inside or at least partially be provided with one or more grooves can, which can also be provided in bead-like thickening, to counteract loads that may act on the drying roller of external pressure rollers or cylinders.
  • the cover of the drying roller may be disc-shaped.
  • at least one of the lids may be a flat disk.
  • at least one of the lids can also have a curved shape, for example similar to a dished bottom or basket bottom, or be formed with a semi-elliptical cross section.
  • the hollow shaft may be provided for mounting the drying roller, wherein it reduces a force acting on the cylinder jacket or the cover voltage.
  • the hollow shaft is of cylindrical shape with flat or conical end portions. It may be integral or multi-piece with two or more interconnected, for example, welded, soldered, bolted, locked or formed by bolt segments formed.
  • the hollow shaft is formed integrally with the pins.
  • the pins are usually used in corresponding bearings or bearing housings, which support the entire arrangement of the drying roller and allow a rotational movement of the drying roller.
  • components of the drying roller of different materials and in particular of metals such as steel, stainless steel, carbon steel, cast steel or cast iron can be made.
  • the weld is welded without counter-bead, which improves the process reliability in the manufacture of the weld because the weld is particularly simple.
  • a drying roller may consist of at least one cylindrical cylinder jacket, two lids attached to both sides of the cylinder jacket, and two indirectly via a hollow shaft connected to the lids or pins fastened directly to the lids, the cylinder jacket and the lids being formed by an annular weld are welded together, wherein the radially inner workpiece surfaces of both the lid and the cylinder jacket are formed on both sides of the weld cylindrical and wherein in at least one lid a closable or closed inspection opening is provided.
  • the inspection opening may be identical to a hole for the hollow shaft or the pins.
  • a further opening for the hollow shaft or the pins may be provided in addition to the inspection opening.
  • the inspection opening can be designed as a manhole.
  • the drying roller at least from a cylindrical cylinder jacket, consist of two attached on both sides of the cylinder jacket covers and two indirectly via a hollow shaft connected to the covers or directly attached to the lids pin, wherein the cylinder jacket and the lid by an annular weld are welded together, wherein the radially inner workpiece surface of the cylinder jacket between a condenser and the weld is cylindrical.
  • the capacitor has one, preferably a plurality, circumferential grooves.
  • a machined transition radius and / or a transitional groove preferably with at least one machined transition radius between groove flank of the transition groove and groove bottom of the transition groove, is provided between the cylindrical inner workpiece surface of the cylinder jacket and the condenser.
  • the transition radius and / or the transition groove can be made in particular by means of milling or turning.
  • a distance between the respective lid to be welded and the cylinder jacket via at least one spacer can be defined before welding the lid with the cylinder jacket to this Way to provide a reliable weld.
  • this method makes it possible to produce a drying roller with a peripheral weld seam between the cylinder jacket and the cover, which has a joint with at least two mutually opposite and mutually spaced parallel flank regions.
  • the lid to be welded first and the cylinder jacket are tacked together by tack welding and then first welded together by means of welding beads.
  • the tack weld allows pre-fixing of the cover to the cylinder jacket, before it comes to the final connection by welding over weld beads. Inaccuracies in the positioning of the lid can be corrected in this way before the final welding.
  • the spacer may be a spacer ring which ensures a constant equal distance between the cover and the cylinder jacket along the circumference of the dryer roll.
  • ring segments or separate spacers with a defined width can alternatively be used.
  • a drying roller at least consisting of a cylindrical cylinder jacket, two on both sides of the cylinder jacket attached lids and two indirectly via a hollow shaft connected to the lids or directly attached to the lids pin, wherein the cylinder jacket and the Lid are welded together by an annular weld, after welding the lid with the cylinder jacket, the weld through an inspection opening are checked from the inside.
  • the overall reliability of the weld is increased because faulty welds can be repaired immediately.
  • a variety of test methods can be used.
  • the radially inner workpiece surfaces of both the lid and the cylinder jacket are cylindrical on both sides of the weld seam.
  • Suitable inspection devices may be, for example, X-ray devices or ultrasound devices.
  • inspections may be performed, for example, by means of dye penetrant tests or magnetic particle inspections or other methods.
  • Figure 1 is a schematic illustration of a drying roller
  • FIG. 2 shows a partial region of the illustration of FIG. 1
  • FIG. 3 shows an illustrated portion of a drying roller with a
  • FIG. 4 shows an illustrated portion of a drying roller with a stepped transition groove in a similar representation as Figures 2 and 3.
  • the drying roller 1 further comprises a extending between the covers 3 and provided with through holes hollow shaft 5.
  • a pin 6 is provided on an outer surface of each of the lid 3, so that the overall result is an axisymmetric structure of the drying roller 1.
  • the drying roller 1 can be rotatably supported about the longitudinal axis 7 in suitable bearings, which are not shown in FIG.
  • the outer surface of the cylinder jacket 2 is at least partially wrapped by paper to be dried or paper to be dried is on the Outer surface of the cylinder jacket 2 launched.
  • pressure rollers press the paper placed against the cylinder shell 2.
  • hot steam at a pressure of usually 3 to 8 bar, which may be up to 12 bar or more, passed into the interior 4.
  • FIG. 2 a partial region of the drying roller 1 designated by A in FIG. 1 is enlarged and shown in cross-section, part of one of the covers 3 and a part of the cylinder jacket 2 and between these two the weld seam 8 already mentioned above see are.
  • FIG. 2 it can be seen, in particular, that mutually facing surfaces of both the cover 3 and the cylinder jacket 2 have flank regions 9 which are inclined relative to one another and second flank regions 10 which are mutually parallel and spaced from one another.
  • An end portion 11 of the cylinder jacket facing the weld seam 8 is cylindrical in shape on a surface facing the interior space 4, ie. free of elevations or depressions, trained.
  • a conical formed as a capacitor 12 the interior 4 towards thickened section with a plurality of circumferentially extending and along the longitudinal axis 7 successively arranged grooves 13 connects.
  • a transition between the end portion 11 to the capacitor 12 has a transition radius 14.
  • the cover 3 is also cylindrical in the area of the weld seam 8 toward the interior 4, so that the radially inner workpiece surfaces of both the cover 3 and the cylinder jacket 2 are cylindrical on both sides of the weld seam 8.
  • the weld 8 As a result of opening into the interior 4 towards groove-shaped portion, it is possible to provide the weld 8 with a substantially V-shaped cross-section with a counter-bead.
  • the cylindrical end portion 11 and the both sides of the weld 8 cylindrical radially inner workpiece surfaces of both the lid 3 and the cylinder jacket 2, the weld 8 allows easy visually or by a suitable test method, for example, X-rays or ultrasound, or by means of dye penetrant or magnetic powder tests.
  • the weld 8 can also be formed with a U-shaped, K-shaped, X-shaped, double U-shaped or differently shaped cross-section.
  • a circumferential transition groove 15 is formed instead of a radius for the transition from the cylindrical end section 11 to the condenser 12.
  • Their depth is in the present case equal to the depth of the grooves 13 of the capacitor 12, but it may also have a different depth than the grooves 13.
  • a wide step-like Transition groove 16 is formed. Their width is limited only by the width of the end portion 11. Between each of the longitudinal axis 7 perpendicular groove flanks of the transition groove 16 and a parallel to the longitudinal axis 7 groove bottom of the transition groove 16 a transition radius 17 is provided in each case.
  • Drying roller 10 Second flank area Cylinder shell 11 End section Lid 12 Capacitor

Landscapes

  • Drying Of Solid Materials (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un cylindre sécheur qui est au moins constitué d'une enveloppe cylindrique, de deux éléments de fermeture placés de part et d'autre de l'enveloppe cylindrique et de deux tenons fixés directement sur les éléments de fermeture ou indirectement par l'intermédiaire d'un arbre creux relié aux éléments de fermeture, l'enveloppe cylindrique et les éléments de fermeture étant soudés ensemble par un cordon de soudure circulaire, le cordon de soudure présentant un joint avec au moins deux zones de flanc parallèles espacées l'une et l'autre et opposées l'une à l'autre. L'invention concerne également un procédé de fabrication d'un cylindre sécheur.
EP14727515.0A 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication Active EP3017110B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17153733.5A EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013213194 2013-07-05
PCT/EP2014/061330 WO2015000647A1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP17153733.5A Division EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage
EP17153733.5A Division-Into EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage

Publications (2)

Publication Number Publication Date
EP3017110A1 true EP3017110A1 (fr) 2016-05-11
EP3017110B1 EP3017110B1 (fr) 2017-04-12

Family

ID=50877293

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17153733.5A Active EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage
EP14727515.0A Active EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17153733.5A Active EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage

Country Status (4)

Country Link
US (2) US10066340B2 (fr)
EP (2) EP3196356B1 (fr)
CN (1) CN105358762B (fr)
WO (1) WO2015000647A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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BR112017019704B1 (pt) * 2015-03-18 2022-02-15 A. Celli Paper S.P.A. Cilindro secador yankee com geometria interna aprimorada
ITUB20151129A1 (it) * 2015-05-27 2016-11-27 Celli Mauro Metodo per produrre un cilindro monolucido perfezionato
US10590602B2 (en) * 2015-06-23 2020-03-17 A. Celli Paper S.P.A. Method for assembling an improved Yankee cylinder
SE541319C2 (en) * 2017-11-22 2019-07-02 Valmet Oy An intermediate product in the manufacturing process of a yankee drying cylinder
PL3556936T3 (pl) * 2018-04-17 2020-08-10 Valmet Aktiebolag Sposób wytwarzania stalowego cylindra suszącego typu yankee
DE102018119489A1 (de) 2018-08-10 2019-06-27 Voith Patent Gmbh Trockenwalze
WO2023007354A1 (fr) * 2021-07-27 2023-02-02 A.Celli Paper S.P.A. Cylindre pour machine de fabrication de plis de cellulose

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Also Published As

Publication number Publication date
WO2015000647A1 (fr) 2015-01-08
CN105358762A (zh) 2016-02-24
US10676866B2 (en) 2020-06-09
CN105358762B (zh) 2020-03-31
US20180320313A1 (en) 2018-11-08
EP3196356B1 (fr) 2018-03-21
EP3196356A1 (fr) 2017-07-26
EP3017110B1 (fr) 2017-04-12
US20160145804A1 (en) 2016-05-26
US10066340B2 (en) 2018-09-04

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