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SE1850509A1 - A yankee drying cylinder for drying a wet fibrous web - Google Patents

A yankee drying cylinder for drying a wet fibrous web

Info

Publication number
SE1850509A1
SE1850509A1 SE1850509A SE1850509A SE1850509A1 SE 1850509 A1 SE1850509 A1 SE 1850509A1 SE 1850509 A SE1850509 A SE 1850509A SE 1850509 A SE1850509 A SE 1850509A SE 1850509 A1 SE1850509 A1 SE 1850509A1
Authority
SE
Sweden
Prior art keywords
shell
end cover
circumference
axial direction
walls
Prior art date
Application number
SE1850509A
Other versions
SE542227C2 (en
Inventor
Ola Jonsson
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Priority to SE1850509A priority Critical patent/SE542227C2/en
Priority to CN201980021071.0A priority patent/CN111886380B/en
Priority to PCT/SE2019/050367 priority patent/WO2019209164A1/en
Priority to EP19792487.1A priority patent/EP3749803A4/en
Publication of SE1850509A1 publication Critical patent/SE1850509A1/en
Publication of SE542227C2 publication Critical patent/SE542227C2/en

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
    • D21F5/18—Drying webs by hot air
    • D21F5/181—Drying webs by hot air on Yankee cylinder
    • 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
    • D21F5/06—Regulating temperature

Landscapes

  • Paper (AREA)

Abstract

The invention relates to a Yankee drying cylinder (1) for drying a wet fibrous web (W) which has a shell (6) that is made of steel and has a circular cylindrical form with a central axis (A) around which the shell (6) is symmetrical. The shell (6) extends in an axial direction and has two axial ends (7, 8) and a middle section (9) located between the axial ends (7, 8). For each axial end (7, 8) of the shell (6), an end cover (10, 11) is fixed to the shell (6) such that the shell (6) and the end covers (10, 11) form a hollow inside volume (V). Each end cover (10, 11) has an outer circumference (12) at which the end cover (10, 11) is fastened to the shell (6) and each end cover (10, 11) has a central annular opening (23) defining an inner circumference (13) at which the end cover (10, 11) is fastened to an attachment ring (14). Each end cover (10, 11) comprises an inner wall (15) and an outer wall (16), each of the outer and inner walls (15, 16) having an outer circumference (17, 19) adjacent the shell (6) and a central opening (21, 22) defining for each of the outer wall (16) and the inner wall (15) an inner circumference (18, 20) adjacent the attachment ring (14). The inner and outer walls (15, 16) are spaced apart from each other in the axial direction of the shell (6) in at least one region between the outer circumference (12) of the end cover (10, 11) and the inner circumference (13) of the end cover (10, 11). The end cover (10, 11) is welded to the shell (6) and to the attachment ring (14) and the inner and outer walls (15, 16) are curved or slanting inwards in the axial direction of the shell (6) such that, in a radial direction away from the outer circumference (12) of the end cover (10, 11) and toward the central axis (A) of the shell (6), the distance in the axial direction of the shell (6) from both the outer and the inner walls (15, 16) to the middle section (9) of the shell (6) decreases in such a way that, at the inner circumference (18, 20) of the inner and outer walls (15, 16), the distance in the axial direction from each of the inner and the outer walls (15, 16) to the middle section (9) of the shell (6) is smaller than at the outer circumference (17, 19) of the inner and outer walls (15, 16).
SE1850509A 2018-04-27 2018-04-27 A yankee drying cylinder for drying a wet fibrous web SE542227C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE1850509A SE542227C2 (en) 2018-04-27 2018-04-27 A yankee drying cylinder for drying a wet fibrous web
CN201980021071.0A CN111886380B (en) 2018-04-27 2019-04-18 Yankee dryer for drying a wet fibrous web
PCT/SE2019/050367 WO2019209164A1 (en) 2018-04-27 2019-04-18 A yankee drying cylinder for drying a wet fibrous web
EP19792487.1A EP3749803A4 (en) 2018-04-27 2019-04-18 A yankee drying cylinder for drying a wet fibrous web

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1850509A SE542227C2 (en) 2018-04-27 2018-04-27 A yankee drying cylinder for drying a wet fibrous web

Publications (2)

Publication Number Publication Date
SE1850509A1 true SE1850509A1 (en) 2019-10-28
SE542227C2 SE542227C2 (en) 2020-03-17

Family

ID=68293684

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1850509A SE542227C2 (en) 2018-04-27 2018-04-27 A yankee drying cylinder for drying a wet fibrous web

Country Status (4)

Country Link
EP (1) EP3749803A4 (en)
CN (1) CN111886380B (en)
SE (1) SE542227C2 (en)
WO (1) WO2019209164A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022152722A1 (en) 2021-01-12 2022-07-21 A.Celli Paper S.P.A. Cylinder for machines producing cellulose webs, and related method
IT202100020027A1 (en) 2021-07-27 2023-01-27 A Celli Paper Spa METHOD FOR ASSEMBLING A ROLL FOR MACHINES FOR THE PRODUCTION OF CELLULOSIC PLY, AND ROLL

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039046C (en) * 1994-06-09 1998-07-08 枣庄市台儿庄造纸机械厂 Steel made welding baking tank for paper making machinery and producing method
CN101641475B (en) * 2007-03-01 2012-07-25 托斯克科技股份公司 Yankee cylinder for paper producing machine
IT1395588B1 (en) * 2009-09-09 2012-10-16 Toscotec S P A "INSULATED MONOLUCID CYLINDER"
WO2013087597A1 (en) * 2011-12-14 2013-06-20 Voith Patent Gmbh Device for producing a material web
CN104631188A (en) * 2013-11-12 2015-05-20 张公文 High-alloy cast iron drying cylinder
SE540216C2 (en) * 2016-03-31 2018-05-02 Valmet Oy A yankee drying cylinder for drying a fibrous web and a method of making a yankee drying cylinder
CN107675544A (en) * 2017-11-06 2018-02-09 江苏维美轻工机械有限公司 A kind of A Si meter drying cylinders

Also Published As

Publication number Publication date
WO2019209164A1 (en) 2019-10-31
CN111886380B (en) 2021-06-11
EP3749803A1 (en) 2020-12-16
SE542227C2 (en) 2020-03-17
EP3749803A4 (en) 2021-11-17
CN111886380A (en) 2020-11-03

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Legal Events

Date Code Title Description
NUG Patent has lapsed