EP2408964B1 - Dampfbeheizter trockenzylinder mit innen liegenden leisten zur erhöhung der wärmeleistung - Google Patents

Dampfbeheizter trockenzylinder mit innen liegenden leisten zur erhöhung der wärmeleistung Download PDF

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Publication number
EP2408964B1
EP2408964B1 EP10705871A EP10705871A EP2408964B1 EP 2408964 B1 EP2408964 B1 EP 2408964B1 EP 10705871 A EP10705871 A EP 10705871A EP 10705871 A EP10705871 A EP 10705871A EP 2408964 B1 EP2408964 B1 EP 2408964B1
Authority
EP
European Patent Office
Prior art keywords
drying cylinder
retaining ring
cylinder according
spoiler bars
circumferential surface
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
EP10705871A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2408964A1 (de
Inventor
Daniel Junginger
Ansgar MÜLLER
Michael Lohrmann
Erich Willer
Holger Brunner
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 EP2408964A1 publication Critical patent/EP2408964A1/de
Application granted granted Critical
Publication of EP2408964B1 publication Critical patent/EP2408964B1/de
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
    • D21F5/021—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
    • D21F5/022—Heating the cylinders
    • D21F5/028—Heating the cylinders using steam

Definitions

  • the invention relates to a steam-heated drying cylinder for drying a material web, in particular a paper, board or tissue web.
  • the drying cylinder comprises an inner space with a lateral surface and a device for increasing the heat transfer from the inner space to the outer surface, wherein the device consists of a plurality of circumferentially arranged, axially aligned and the lateral surface touching Störangn and at least one circumferentially extending retaining ring with at least one clamping element, wherein the at least one retaining ring with the at least one clamping element cooperates such that a radial, acting on the spoiler bars clamping force of the at least one retaining ring is formed and wherein the spoiler bars are formed as a U-profile, the open side facing the lateral surface.
  • the spoiler bars are formed by tubes of rectangular cross-section and pressed by retaining rings to the cylinder inner wall. For attachment of the spoiler bars with the retaining rings are in the spoiler bars for receiving pins, which in turn are bolted to the retaining rings or connected by fits.
  • the spoiler bars are connected directly to the cylinder jacket.
  • the object of the invention is to provide a cost-effective, variable solution for connecting spoiler bars and retaining rings, which also allows easy assembly and disassembly without special tools and a modular design of the device and on the other ensures a secure fit of the inguinal cage in the drying cylinder.
  • the object is achieved for a generic drying cylinder, characterized in that the at least one retaining ring is positively connected at least with a portion of the spoiler.
  • the solution according to the invention enables a quick and tool-free installation of the retaining rings with the spoiler bars.
  • This simple construction of the device consists of a few different components, so that standardization is possible and simplified from an economic point of view. This also results in a cost reduction of this device over the known devices.
  • the spoiler bars have fixing openings and the at least one retaining ring has fixing lugs. These together form the positive connection.
  • the cross section of the fixing openings may be round or preferably rectangular or square.
  • the fixing tabs are preferably made with the corresponding complementary shape.
  • the fixing lugs may be separate components, which are mounted on the respective retaining ring or produced during the production of the respective retaining ring from a piece of material.
  • the positive connection is designed so that there is a degree of freedom in the radial direction.
  • the fault strip can move relative to the retaining ring in the radial direction to compensate, for example, small differences in geometry of the components. In the axial direction and in the circumferential direction, however, essentially no relative movements are possible.
  • the fixing holes of the spoiler bars and the fixing tabs of the retaining rings are arranged in pairs.
  • the fixing holes in the retaining rings and the fixing tabs are in the spoiler bars.
  • the number of fixing holes or the fixing tabs in the spoiler bars is at least equal to the number of retaining rings, but preferably it is larger.
  • the distance of the retaining rings in the axial direction can be flexibly and variably adjusted without having to make changes to the spoiler bars.
  • the distance in the edge regions of the drying cylinder may be smaller than in the middle region.
  • the spoiler strips consist of U-shaped strips and the open side of a U-shaped strip is directed to the lateral surface of the drying cylinder.
  • the contact surfaces of the legs of the Störjon extend over the entire length of the respective Störelf.
  • the leg width of the spoiler bars in the range of 0.8 mm and 6 mm, in particular in the range of 1.5 mm and 3 mm. If the U-profile is made from a metal sheet, then the leg width corresponds to the sheet thickness. In a practical embodiment, the sheet thickness is for example 2mm.
  • the height of a faulty strip is in the range of 3 mm to 30 mm, preferably between 5 mm and 12 mm. In a practical example, it is 8 mm.
  • the width of a noise strip is in the range of 8 mm to 50 mm, preferably between 12 mm and 30 mm. In a practical example, it is 20 mm.
  • the contact surfaces of the legs of the fault strips are only partially on the lateral surface. In this case, the contact surfaces have recesses.
  • edges of the contact surface of the legs contacting the lateral surface are designed sharp-edged.
  • sharp-edged is an edge deburred after mechanical machining understand. The radius is less than 0.5 mm.
  • the strip cage is frictionally held on the lateral surface of the drying cylinder.
  • the retaining rings consist of U-shaped strips.
  • the retaining rings consist of one or more retaining ring segments.
  • the number of retaining ring segments corresponds to a prime number.
  • no or only small imbalances are particularly advantageous.
  • retaining rings which consist of three retaining ring segments. Such systems have the property of self-centering.
  • the retaining rings are advantageously designed rotationally symmetrical.
  • the clamping element can be designed as a cylindrical spring or coil spring and generates in the installed state, the radial clamping force on the Störance and thus the contact pressure of the Störance on the outer surface of the drying cylinder.
  • connecting elements for connecting the clamping elements to the retaining ring segments are arranged on both sides of the clamping elements.
  • the connecting elements are designed so that the distance between the connecting elements and thus the length of the clamping element is variable. If, for example, a cylindrical spring is used as the clamping element, the connecting elements can each be designed with two lugs for receiving clamping screws. By means of the connecting elements connecting the clamping screws now the distance of the connecting elements can be shortened and thus the cylinder spring can be compressed. In this tensioned state, the diameter of the retaining rings smaller, so that the retaining rings or the spoiler bars and retaining rings with clamping elements comprehensive cage cage can be easily installed in the drying cylinder. When installed, the clamping screws are relieved and thus brought the inguinal cage in operating position.
  • the arrangement of the clamping elements and connecting elements is chosen so that the line of action of the force acting on the retaining ring segments expansion force substantially coincides with the axis of the clamping element. As a result, bending moments are avoided on the retaining ring segments due to the expansion force.
  • a drying cylinder can be equipped in a preferred embodiment with multiple inguinal cage modules.
  • a strip cage module is characterized in that the length of the spoiler strips is shorter than the lateral surface of the interior of a length L in the axial direction having drying cylinder.
  • several similar inguinal cage modules can be installed one behind the other in the axial direction. Modular design simplifies manufacturing and reduces manufacturing costs.
  • the embodiment variant comes into play, in which the number of fixing holes or fixing straps in the spoiler bars is greater than the number of retaining rings.
  • the distance of the retaining rings in the edge regions can be made narrower than in the middle.
  • the lengths of the individual spoiler bars and thus of a last cage module are 2 meters.
  • the distance of the retaining rings is 500 mm, in the border areas 250 mm.
  • Cleats and retaining rings can be made of the same or different materials. Appropriate materials are metallic materials, such as steel, stainless steel, brass or non-metallic materials such as plastics, fiber-reinforced materials, etc ..
  • FIG. 1 1 shows a steam-heated drying cylinder 1 according to the invention of a paper machine with a strip cage 10 installed in its interior.
  • the spoiling strips 2 are arranged axially, that is to say parallel to the longitudinal axis of the drying cylinder 1, and pressed against the jacket surface 1.1 with four retaining rings 3.
  • the retaining rings 3 are composed of retaining ring segments 3.1. To generate the radial clamping force on the spoiler bars 2, the retaining ring segments are pressed apart by coil springs or cylinder springs 4. In this example, there is a positive connection at each intersection between the retaining ring segment 3.1 and 2 Störmann.
  • the retaining rings 3 are arranged equidistantly.
  • the illustrated inguinal cage 10 may also form a last cage module for wider paper machines.
  • the inguinal cage of wide drying cylinders is then formed by several side-by-side inguinal cage modules 10. These strip cage modules 10 are then preferably the same width. Thus, the same modules can be combined into a last cage. In the event that the length of the interior of the cylinder does not correspond to the integral multiple of the width of a last cage module, the missing length is fitted with a cage with a suitable width.
  • a strip cage 10 is shown schematically in cross section perpendicular to the longitudinal axis of the drying cylinder 1.
  • the retaining ring 3 consists of 3 retaining ring segments 3.1, 3.2, 3.3 are connected via trained as a spiral springs 4 clamping elements in operative connection.
  • the connecting elements 8, 9 between retaining ring segment 3.1, 3.2, 3.3 and clamping element 4 are not shown for clarity.
  • the spoiler bars 2 are arranged on the outer circumference of the retaining ring 3 and formed as U-profiles.
  • FIG. 3 shows a part of a Störlich 2, which is designed as a U-shaped profile.
  • the leg width 5 is 2 mm
  • the Störancen Love 5.2 is 8 mm
  • the Störancenbreite 5.1 is 20 mm.
  • the Störarchnschreiben 5.4 has paired fixing holes 7. In this example, two pairs of such fixing holes 7 are shown.
  • FIG. 4 is a section of a retaining ring segment 3.1 shown with three fixing tabs 6.
  • the fixing lugs 6 are made together with the fault strip of a material. For example, they were made of a stainless steel sheet having a thickness of 2 mm. The distances of the fixing tabs 6 have different values. However, they are preferably the same.
  • FIG. 5 shows the retaining ring segment 3.1 in the side view along the section line XX in the FIG. 4 , It can be seen that the retaining ring segments consist of a U-profile.
  • Each leg has paired fixing lugs 6, which together with the pairs of fixing holes 7 of the spoiler bars 2 form the respective form-fitting.
  • FIG. 6 shows the clamping element 4 in the form of a cylindrical spring 4, which is arranged between the connecting elements 8 and 9.
  • the connecting elements 8, 9 each have a clamping element receptacle 8.4 for receiving the cylindrical spring 4 and two support lugs 8.1, 9.1 and a centering tab 8.2, 9.2 as a plug connection with the respective retaining ring segments 3.1 and 3.2.
  • the connecting elements 8, 9 have transverse clamping straps 8.4, 9.4 for receiving clamping screws 11.
  • the cylinder spring 4 is tensioned and the diameter of the retaining rings 3 are reduced.
  • the clamping screws 11 are positioned in slots of the clamping tabs 8.4, 9.4. As a safeguard against lateral slipping out of the clamping screws 11 ramps 8.5, 9.5 are provided.
  • FIG. 7 is a side view of the FIG. 6 shown in section.
  • the clamping element 8.3 is designed as a round hollow body
  • the centering 8.2 engage in the U-profile of the retaining rings 3.1, 3.2 and center them with the clamping element 4 in the axial direction of the drying cylinder 1.
  • the back of the U-profile of the retaining ring segments 3.1, 3.2 is in clamped by the centering tab 8.2, 9.2 and the support lugs 8.1, 9.1 formed gap.
  • the support lugs 8.1, 9.1 are shaped so that the gap tapers in the direction of insertion of the retaining ring segment 3.1, 3.2.

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  • Drying Of Solid Materials (AREA)
EP10705871A 2009-03-17 2010-02-25 Dampfbeheizter trockenzylinder mit innen liegenden leisten zur erhöhung der wärmeleistung Not-in-force EP2408964B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910001593 DE102009001593A1 (de) 2009-03-17 2009-03-17 Dampfbeheizter Trockenzylinder mit innen liegenden Leisten zur Erhöhung der Wärmeleistung
PCT/EP2010/052386 WO2010105895A1 (de) 2009-03-17 2010-02-25 Dampfbeheizter trockenzylinder mit innen liegenden leisten zur erhöhung der wärmeleistung

Publications (2)

Publication Number Publication Date
EP2408964A1 EP2408964A1 (de) 2012-01-25
EP2408964B1 true EP2408964B1 (de) 2013-01-02

Family

ID=42338310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10705871A Not-in-force EP2408964B1 (de) 2009-03-17 2010-02-25 Dampfbeheizter trockenzylinder mit innen liegenden leisten zur erhöhung der wärmeleistung

Country Status (5)

Country Link
EP (1) EP2408964B1 (pt)
CN (1) CN102348850A (pt)
BR (1) BRPI1006201B1 (pt)
DE (1) DE102009001593A1 (pt)
WO (1) WO2010105895A1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU232920U1 (ru) * 2025-02-21 2025-03-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" Термопланка сушильного цилиндра бумагоделательной машины

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9562324B2 (en) * 2011-05-03 2017-02-07 Gregory L. Wedel Turbulence bar assembly
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
US4195417A (en) * 1979-01-19 1980-04-01 Beloit Corporation Dryer drum with magnetic spoiler bars
FI66220C (fi) * 1983-03-01 1984-09-10 Valmet Oy Anordning i torkcylindrarna i en pappermaskin foer att foerbaettra vaermeoeverfoeringen
DE4311936A1 (de) * 1993-04-10 1993-10-07 J M Voith Ag St Poelten Verfahren und Vorrichtung zum verschiebesicheren Positionieren eines Bauteils
US5528838A (en) * 1994-03-25 1996-06-25 The Johnson Corporation Insulated dryer drum
US7028756B2 (en) 2002-05-17 2006-04-18 The Johnson Corporation Apparatus for increasing a transfer of thermal energy through an inner surface of a hollow cylindrical dryer of a papermaking machine
DE102005000795A1 (de) * 2005-01-05 2006-07-13 Voith Paper Patent Gmbh Vorrichtung und Verfahren zur Herstellung und/oder Veredelung einer Faserstoffbahn
CN101194069A (zh) * 2005-05-13 2008-06-04 沃依特专利有限责任公司 干燥筒

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU232920U1 (ru) * 2025-02-21 2025-03-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный лесотехнический университет" Термопланка сушильного цилиндра бумагоделательной машины

Also Published As

Publication number Publication date
EP2408964A1 (de) 2012-01-25
BRPI1006201A2 (pt) 2018-03-27
WO2010105895A1 (de) 2010-09-23
CN102348850A (zh) 2012-02-08
DE102009001593A1 (de) 2010-09-23
BRPI1006201B1 (pt) 2019-06-25

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