EP3196356B1 - Rouleau de séchage - Google Patents

Rouleau de séchage Download PDF

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Publication number
EP3196356B1
EP3196356B1 EP17153733.5A EP17153733A EP3196356B1 EP 3196356 B1 EP3196356 B1 EP 3196356B1 EP 17153733 A EP17153733 A EP 17153733A EP 3196356 B1 EP3196356 B1 EP 3196356B1
Authority
EP
European Patent Office
Prior art keywords
cylinder jacket
weld
drying roller
cylindrical
groove
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.)
Not-in-force
Application number
EP17153733.5A
Other languages
German (de)
English (en)
Other versions
EP3196356A1 (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
Publication of EP3196356A1 publication Critical patent/EP3196356A1/fr
Application granted granted Critical
Publication of EP3196356B1 publication Critical patent/EP3196356B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 an annular weld with each other are welded.
  • a drying or drying cylinder for drying webs of pulp or paper which comprises a jacket and covers arranged at the ends of the jacket.
  • 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.
  • the shows WO 2008 / 105005A1 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 recesses between a respective end of the cylinder jacket and one of the lids and filled by welding material, on the inner surface of the cylinder jacket at the level of the recess a counter-bead is provided.
  • the invention is based on the common inventive basic idea to ensure the quality of the weld between the cylinder jacket and cover by a suitable design of the cylinder jacket and the lid in the vicinity of the weld.
  • a drying roller at least consist 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 are welded together by an annular weld , and wherein the weld seam has a joint with at least two mutually opposite and spaced parallel flank regions.
  • the weld has a joint with at least two parallel and oppositely disposed parallel flank regions, or in other words a joint with a land and a land pitch, beads forming a root pass of the weld can reliably also be from the outside be welded. In this way, the quality of the weld formed can be improved and their overall reliability can be increased. Thus, it is thereby possible to provide dry rollers with reliable welds and to provide methods for their production.
  • Such a drying roller can be set up 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-rolls machine glazed
  • 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 directly attached 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 inner side or at least in sections may be provided with one or more grooves may also be provided in bead-like thickening to counteract stresses that may act on the drying roller of outer 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 may 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, whereby the process reliability in the production of the weld improves because the weld is made particularly simple.
  • a drying roller may consist of at least one cylindrical cylinder jacket, two lids attached on both sides of the cylinder jacket, and two indirectly via a hollow shaft connected to the lids or pins secured directly to the lids, wherein the cylinder jacket and the lids are welded together by an annular weld , wherein the radially inner workpiece surfaces of both the lid and the cylinder jacket are cylindrical on both sides of the weld and wherein in at least one cover 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 can 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, wherein the cylinder jacket and the lids are welded together by an annular weld , wherein the radially inner workpiece surface of the cylinder jacket between a condenser and the weld seam is cylindrical.
  • the weld of such a trained drying roller can be tested by means of X-rays, ultrasound, penetration tests in the form of dye penetration and / or, but not limited thereto, by magnetic particles.
  • 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 base 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 circumferential weld seam between the cylinder jacket and the cover, which has a joint with at least two parallel flank regions lying opposite one another and being spaced apart from one another.
  • the lid to be welded in each case and the cylinder jacket are first tacked to one another via a tack weld and subsequently welded to one another only via weld 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 can be a spacer ring, which ensures a constant equal distance between the cover and the cylinder jacket along the circumference of the drying roller.
  • 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 by a annular weld welded together, after welding the cover with the cylinder jacket, the weld through an inspection opening are checked from the inside.
  • the radially inner workpiece surfaces of both the lid and the cylinder jacket are cylindrical on both sides of the weld.
  • 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.
  • FIG. 1 illustrated essentially cylindrical drying roller 1 comprises a cylinder jacket 2 and two attached on both sides of the cylinder jacket 2 and by means of a in the FIG. 1
  • the drying roller 1 further has a hollow shaft 5 extending between the lids 3 and provided with passage openings.
  • 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 in suitable and in the FIG. 1 Bearings not shown are rotatably mounted about the longitudinal axis 7.
  • 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 is one in the FIG. 1 Enlarged A portion of the drying roller 1 and enlarged in cross-section, wherein a part of the lid 3 and a part of the cylinder jacket 2 and between these two the above-mentioned weld 8 can be seen. From the FIG. 2 In particular, it is apparent that facing the butt of the weld facing each other facing surfaces of both the lid 3 and the cylinder jacket 2 mutually inclined first flank regions 9 and second flank regions 10 which are mutually parallel and spaced apart. This results in a substantially V-shaped cross section of the weld 8, which widened towards the outside of the cylinder jacket 2 and tapers towards the interior 4, wherein it opens into the interior 4 via a groove-shaped section delimited by the second flank regions 10.
  • 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 weld 8 As a result of opening into the interior 4 out 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 particle checks.
  • the weld 8 can also be formed with a U-shaped, K-shaped, X-shaped, double U-shaped or other shaped cross-section.
  • a circumferential transition groove 15 is formed. Their depth is present equal to the depth of the grooves 13 of the capacitor 12, but it may also have a different depth than the grooves 13th
  • a wide stepped transition groove 16 is formed. Their width is limited only by the width of the end portion 11.
  • a transition radius 17 is provided in each case.

Landscapes

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

Claims (4)

  1. Rouleau de séchage (1), constitué au moins d'une enveloppe de cylindre cylindrique (2), de deux couvercles (3) appliqués des deux côtés de l'enveloppe cylindrique (2) ainsi que de deux tourillons (6) fixés aux couvercles (3) directement ou indirectement par le biais d'un arbre creux (5) connecté aux couvercles (3), l'enveloppe de cylindre (2) et les couvercles (3) étant soudés les uns aux autres par un joint de soudure annulaire (8), caractérisé en ce que la surface de pièce située radialement à l'intérieur de l'enveloppe de cylindre (2) est réalisée sous forme cylindrique entre un condenseur (12) et le joint de soudure (8).
  2. Rouleau de séchage (1) selon la revendication 1, caractérisé en ce que le condenseur (12) présente au moins une, de préférences plusieurs, rainures périphériques (13).
  3. Rouleau de séchage (1) selon la revendication 1 ou 2, caractérisé en ce qu'un rayon de transition (14) usiné par enlèvement de copeaux est prévu entre la surface de pièce intérieure cylindrique de l'enveloppe de cylindre (2) et le condenseur (12) et/ou une rainure de transition (15, 16), de préférence avec au moins un rayon de transition (17) usiné par enlèvement de copeaux, est prévue entre les flancs de rainure de la rainure de transition (16) et le fond de rainure de la rainure de transition (16).
  4. Rouleau de séchage (1) selon la revendication 1, caractérisé en ce que les surfaces de pièce radialement intérieures du couvercle (3) ainsi que de l'enveloppe de cylindre (2) sont réalisées sous forme cylindrique des deux côtés du joint de soudure (8).
EP17153733.5A 2013-07-05 2014-06-02 Rouleau de séchage Not-in-force EP3196356B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013213194 2013-07-05
EP14727515.0A EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP14727515.0A Division EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication
EP14727515.0A Division-Into EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP3196356A1 EP3196356A1 (fr) 2017-07-26
EP3196356B1 true EP3196356B1 (fr) 2018-03-21

Family

ID=50877293

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14727515.0A Not-in-force EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication
EP17153733.5A Not-in-force EP3196356B1 (fr) 2013-07-05 2014-06-02 Rouleau de séchage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14727515.0A Not-in-force EP3017110B1 (fr) 2013-07-05 2014-06-02 Cylindre sécheur et son procédé de fabrication

Country Status (4)

Country Link
US (2) US10066340B2 (fr)
EP (2) EP3017110B1 (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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WO2016147112A1 (fr) * 2015-03-18 2016-09-22 A. Celli Paper S.P.A. Cylindre à géométrie interne améliorée pour sécheur frictionneur
ITUB20151129A1 (it) * 2015-05-27 2016-11-27 Celli Mauro Metodo per produrre un cilindro monolucido perfezionato
WO2016207752A1 (fr) * 2015-06-23 2016-12-29 A. Celli Paper S.P.A. Procédé d'assemblage d'un cylindre de sécherie monocylindrique
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
US20180320313A1 (en) 2018-11-08
US10066340B2 (en) 2018-09-04
WO2015000647A1 (fr) 2015-01-08
CN105358762A (zh) 2016-02-24
EP3196356A1 (fr) 2017-07-26
EP3017110A1 (fr) 2016-05-11
US20160145804A1 (en) 2016-05-26
CN105358762B (zh) 2020-03-31
US10676866B2 (en) 2020-06-09
EP3017110B1 (fr) 2017-04-12

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