EP3241945B1 - Cylindre yankee - Google Patents

Cylindre yankee Download PDF

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Publication number
EP3241945B1
EP3241945B1 EP17167463.3A EP17167463A EP3241945B1 EP 3241945 B1 EP3241945 B1 EP 3241945B1 EP 17167463 A EP17167463 A EP 17167463A EP 3241945 B1 EP3241945 B1 EP 3241945B1
Authority
EP
European Patent Office
Prior art keywords
thickness
yankee cylinder
central part
central
peripheral part
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.)
Active
Application number
EP17167463.3A
Other languages
German (de)
English (en)
Other versions
EP3241945A1 (fr
Inventor
Francesco Simoncini
Giovan Battista Mennucci
Paolo Raffaelli
Simone Pieruccini
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.)
Toscotec SpA
Original Assignee
Toscotec SpA
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.)
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Publication date
Application filed by Toscotec SpA filed Critical Toscotec SpA
Priority to PL17167463T priority Critical patent/PL3241945T3/pl
Publication of EP3241945A1 publication Critical patent/EP3241945A1/fr
Application granted granted Critical
Publication of EP3241945B1 publication Critical patent/EP3241945B1/fr
Active 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
    • D21F5/021—Construction of the cylinders

Definitions

  • the side ends made by casting require the availability of well-equipped foundries, capable of providing large castings (in fact, a side end may have an outer diameter greater than 6m and weigh tens of tons).
  • On the market are also available steel Yankee cylinders obtained by welding or assembly of components obtained from metal plates.
  • the use of metal plates provides several advantages: it allows to be not bound to the working times and costs of a foundry, the plates have reduced delivery times and higher quality than that of castings (the plates can be supplied after full control against the presence of internal defects, castings may instead have blowholes or defects related to the production process). In other words, the use of metal plates makes it possible to provide a more flexible manufacturing process and to ensure a better quality of the final product.
  • the tie rod (12) is a tubular body having a predetermined diameter and bolted to the ends (11) and placed inside the Yankee (1) parallel to the axis (x-x) of the latter.
  • the welds (4, 5) are made on the smaller thickness (SPP).
  • the depth of the weld beads corresponds to the smaller thickness (SPP) of the metal plates used to make the cylinder end.
  • the metal plate that forms the central part (11C) is circular in shape, while the plates that form the peripheral part (11P) are three in number and are annulus segments whose outer diameter is equal to the diameter of the end (11) and whose inner diameter is equal to the outer diameter of the central part (11C).
  • the welding beads (4) are radially oriented with respect to the circumferential bead (5).
  • the thicknesses of the parts (11C) and (11P) are optimized, the use of material in excess is avoided (with the exception of the oversizing that can possibly be expected to compensate for the absence of the central reinforcement).
  • the use of a thickness (SPP) which is smaller compared to the known solutions in the part that is radially farthest from the axis of the Yankee cylinder, allows not only to reduce the overall weight of the Yankee cylinder, but also to reduce the rotational inertia. This allows, for the same acceleration and deceleration ramps provided for the regular operation of the Yankee cylinder, to use less powerful motors, with consequent economic savings.

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  • Paper (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Claims (7)

  1. Cylindre yankee comprenant un manteau (10) formé d'une surface cylindrique et de deux extrémités (1) unies de parts opposées au manteau (10), où sur chacune desdites extrémités (11) présente une partie centrale (11C) et une partie périphérique (11P) plus éloignée d'un axe central (x-x) du cylindre yankee (1) par rapport à la partie centrale (11C), et où ladite partie centrale (11C) a une ouverture (11A) en correspondance d'un pivot respectif (3) de support du cylindre yankee (1), caractérisé en ce que ladite partie centrale (11C) est formée par une surface métallique ayant une première épaisseur (SPC), la partie périphérique (11P) est formée par une pluralité de surfaces métalliques ayants une deuxième épaisseur (SPP), ladite première épaisseur est majeur de ladite deuxième épaisseur, ladite partie centrale (11C) présente une réduction d'épaisseur sur sa partie externe adjacente à la partie périphérique, les surfaces métalliques qui forment la partie périphérique (11P), en formant une zone localement d'une épaisseur égale à l'épaisseur de la partie périphérique, sont unies entre elles au moyen de premiers bourrelets de soudure (4) de profondeur égal à ladite deuxième épaisseur (SPP) et elle sont unies à la surface métallique qui forme la partie centrale (11C) au moyen d'un deuxième bourrelet de soudure (5) de profondeur égal à ladite deuxième épaisseur (SPP).
  2. Cylindre yankee selon la revendication 1 caractérisé en ce que la surface métallique qui forme la partie centrale (11C) d'une extrémité (11) est de forme circulaire et les surfaces métalliques qui forment la partie périphérique (11P) de l'extrémité ont la forme de segments de secteurs circulaires, les premiers bourrelets de soudure (4) ont direction radiale et le deuxième bourrelet de soudure (5) est circulaire.
  3. Cylindre yankee selon la revendication 1 caractérisé en ce que la surface métallique qui forme la partie centrale (11C) d'une extrémité (11) est de forme non circulaire et le deuxième bourrelet de soudure (5) est formé par une pluralité de segments de soudure rectilignes consécutifs.
  4. Cylindre yankee selon la revendication 1 caractérisé en ce que la surface métallique qui forme la partie centrale (11C) est pourvue d'un renforcement structural (6) en correspondance de ladite ouverture centrale (11A).
  5. Cylindre yankee selon la revendication 1 caractérisé en ce que la partie périphérique (11P) d'une extrémité (11) est pourvue de renforcements structuraux (7) en correspondance des ouvertures relatives (110).
  6. Cylindre yankee selon la revendication 1 caractérisé en ce que les extrémités (11) sont fixées au manteau (10) au moyen d'une soudure (W) ou par des moyens à vis (B).
  7. Cylindre yankee selon la revendication 1 caractérisé en ce que le cylindre yankee comprend un tirant central (12) formé par un corps tubulaire où la partie périphérique (11P) d'une extrémité (11) est externe à une surface délimitée par une base correspondante du tirant (12).
EP17167463.3A 2016-05-02 2017-04-21 Cylindre yankee Active EP3241945B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17167463T PL3241945T3 (pl) 2016-05-02 2017-04-21 Cylinder yankee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUA2016A003075A ITUA20163075A1 (it) 2016-05-02 2016-05-02 Cilindro monolucido.

Publications (2)

Publication Number Publication Date
EP3241945A1 EP3241945A1 (fr) 2017-11-08
EP3241945B1 true EP3241945B1 (fr) 2018-10-24

Family

ID=56740396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17167463.3A Active EP3241945B1 (fr) 2016-05-02 2017-04-21 Cylindre yankee

Country Status (5)

Country Link
EP (1) EP3241945B1 (fr)
CN (1) CN107338669B (fr)
HU (1) HUE040464T2 (fr)
IT (1) ITUA20163075A1 (fr)
PL (1) PL3241945T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111001960B (zh) * 2019-12-18 2021-06-11 安德里茨（中国）有限公司 扬克缸缸段预加工件以及用于制造扬克缸的方法
EP4278038A1 (fr) * 2021-01-12 2023-11-22 A.Celli Paper S.P.A. Cylindre pour des machines produisant des bandes de cellulose et procédé associé
IT202100000458A1 (it) * 2021-01-12 2022-07-12 A Celli Paper Spa Un cilindro pressurizzabile e metodo di produzione

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320582A (en) * 1979-03-09 1982-03-23 United States Steel Corporation Yankee Dryer and method of fabrication
BRPI0721415B1 (pt) * 2007-03-01 2020-11-10 Toscotec S.P.A. cilindro yankee feito de aço, que inclui uma carcaça cilíndrica unida a duas extremidades
IT1395588B1 (it) * 2009-09-09 2012-10-16 Toscotec S P A "cilindro monolucido coibentato"
AT511232B1 (de) * 2011-03-21 2014-09-15 Andritz Ag Maschf Verfahren zur herstellung eines yankeezylinders

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN107338669B (zh) 2019-10-29
ITUA20163075A1 (it) 2017-11-02
CN107338669A (zh) 2017-11-10
PL3241945T3 (pl) 2019-03-29
HUE040464T2 (hu) 2019-03-28
EP3241945A1 (fr) 2017-11-08

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