WO2006120059A1 - Trockenzylinder - Google Patents
Trockenzylinder Download PDFInfo
- Publication number
- WO2006120059A1 WO2006120059A1 PCT/EP2006/061052 EP2006061052W WO2006120059A1 WO 2006120059 A1 WO2006120059 A1 WO 2006120059A1 EP 2006061052 W EP2006061052 W EP 2006061052W WO 2006120059 A1 WO2006120059 A1 WO 2006120059A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- elevations
- drying cylinder
- cylinder according
- height
- roll shell
- Prior art date
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
- D21F5/10—Removing condensate from the interior 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
-
- 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 a drying cylinder for drying a paper, cardboard, tissue or another fibrous web in a machine for producing and / or finishing the same, which is heated from the inside with a gaseous, condensable heat transfer medium, wherein the inside of the roll shell has elevations , which protrude from the collecting on the inside condensate of the heat transfer medium.
- drying cylinders have been known for a long time, with predominantly steam being used as the heating medium.
- This condensate ring is thermally highly insulating and thus deteriorates the heat transfer from the steam to the fibrous web.
- drying cylinders have been developed with radially extending grooves whose ribs protrude slightly from the condensate.
- the object of the invention is therefore to improve the heat transfer by simple means.
- the object has been achieved in that the elevations have at least 1, 2 times the height of the average condensate height and / or the cross-section of the elevations decreases inwardly.
- the elevations protrude considerably from the condensate film and improve the heat transfer due to their direct contact with the gaseous heat transfer medium.
- the elevations In order to provide a sufficient contact surface between the elevations and the gaseous heat transfer medium, the elevations should have at least 1, 2 times, preferably 1, 5 times and in particular 1, 8 times the height of the average condensate height.
- the elevations have a maximum of 10 times, preferably at most 5 times the height of the average condensate height.
- the elevations have a maximum of 2 times, preferably at most 1, 8 times the height of the average condensate height.
- the cross-sectional reduction of the elevations takes place in such a way that an approximately constant heat flow density prevails in the elevations.
- the cross-sectional area of all elevations on the inside should correspond to about half of the inner circumferential surface of the roll shell.
- Size and spacing of the elevations should be chosen so that prevail on the outside of the roll shell, which is touched by the fibrous web, only the smallest possible temperature differences between the areas opposite the elevations and the areas opposite the condensate surface.
- the elevations could be worked out by milling from the roll shell.
- the elevations consist of a different material with good, preferably better thermal conductivity than the roll shell.
- the attachment of the elevations on the roll shell should preferably be done by means of soldering, welding or gluing.
- a relatively fine-meshed distribution of the elevations is possible if they are at least partially in the form of pins or nubs.
- elevations at least partially have the shape of ribs.
- These ribs may be axial, radial or spiral.
- the ribs extend axially.
- the ribs should lead to at least one shell end to a radially extending on the inner circumferential surface collecting channel. From this collection trough the condensate can then be easily derived, for example, with a standing siphon from the drying cylinder.
- Figure 1 a schematic axial cross-section through one end of a
- Drying cylinder and Figure 2 a schematic radial cross section through the drying cylinder.
- the drying cylinders are usually heated with hot steam. For this purpose, this is passed into the interior of the drying cylinder.
- the roll shell 1 has on its inside a plurality of evenly distributed over the circumference arranged and axially extending ribs. 3 These ribs 3 are soldered in the interest of a good thermal connection to the inside or otherwise good heat conducting connected. Like the roll shell 1, they also consist of a good heat-conducting material and project out of the condensate layer.
- the ribs 3, as seen in Figure 2, have a trapezoidal cross section, i. the cross-section tapers from the inside of the roll shell 1. This improves the thermal conductivity to the roll shell 1 and ensures that an increase in the amount of condensate accumulating due to the increasing height increasing groove area between the ribs 3 only to a lesser extent to an increase in the Condensate thickness leads. This makes the effect more independent.
- the average condensation height is generally between 2 and 10 mm, in particular between 3 and 5 mm, wherein the ribs 3 have the 1, 3 to 1, 6 times the height thereof.
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0612971-4A BRPI0612971A2 (pt) | 2005-05-13 | 2006-03-27 | cilindro de secagem |
EP06725321A EP1896655A1 (de) | 2005-05-13 | 2006-03-27 | Trockenzylinder |
JP2008510525A JP2008540993A (ja) | 2005-05-13 | 2006-03-27 | 乾燥シリンダ |
US11/930,965 US20080098613A1 (en) | 2005-05-13 | 2007-10-31 | Drying cylinder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005022233A DE102005022233A1 (de) | 2005-05-13 | 2005-05-13 | Trockenzylinder |
DE102005022233.1 | 2005-05-13 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/930,965 Continuation US20080098613A1 (en) | 2005-05-13 | 2007-10-31 | Drying cylinder |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006120059A1 true WO2006120059A1 (de) | 2006-11-16 |
Family
ID=36570678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/061052 WO2006120059A1 (de) | 2005-05-13 | 2006-03-27 | Trockenzylinder |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080098613A1 (de) |
EP (1) | EP1896655A1 (de) |
JP (1) | JP2008540993A (de) |
CN (1) | CN101189392A (de) |
BR (1) | BRPI0612971A2 (de) |
DE (1) | DE102005022233A1 (de) |
WO (1) | WO2006120059A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006015796A1 (de) * | 2005-05-13 | 2006-11-16 | Voith Patent Gmbh | Trockenzylinder |
IT1395588B1 (it) * | 2009-09-09 | 2012-10-16 | Toscotec S P A | "cilindro monolucido coibentato" |
CN104213453B (zh) * | 2014-09-05 | 2017-07-25 | 哈尔滨玉山能源开发有限责任公司 | 双层超导节能烘缸的筒体装置 |
CN114481669B (zh) * | 2022-02-28 | 2024-05-03 | 李佳键 | 一种造纸钢制扬克烘缸增加内表面积方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE497034C (de) * | 1930-05-01 | Bernhard Wicky | Drehbarer Trockenzylinder fuer Papier-, Textil- und aehnliche Maschinen | |
GB939926A (en) * | 1960-02-08 | 1963-10-16 | Beloit Iron Works | Improvements in or relating to dryer drums |
US3481050A (en) * | 1968-02-02 | 1969-12-02 | Newport News S & D Co | Rotary pressure vessel |
US3724094A (en) * | 1971-02-16 | 1973-04-03 | Kimberly Clark Co | Rotary drying drum |
DE2523829A1 (de) * | 1975-05-30 | 1976-12-02 | Escher Wyss Gmbh | Trocknungszylinder fuer eine papiermaschine |
EP0740018A2 (de) * | 1995-04-24 | 1996-10-30 | The Johnson Corporation | Stationärer Siphon für Wärmeaustauscherrollen |
WO1997021969A1 (en) * | 1995-12-11 | 1997-06-19 | Salminen Reijo K | Processing roll apparatus and method |
EP1419879A1 (de) * | 2002-11-15 | 2004-05-19 | Mitsubishi Heavy Industries, Ltd. | Beheizte Walze für eine Wellenpappemaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5388873A (en) * | 1977-01-14 | 1978-08-04 | Matsushita Electric Works Ltd | Production of decorative plate |
US5564494A (en) * | 1994-08-16 | 1996-10-15 | Salminen; Reijo K. | Processing roll apparatus and method |
-
2005
- 2005-05-13 DE DE102005022233A patent/DE102005022233A1/de not_active Withdrawn
-
2006
- 2006-03-27 EP EP06725321A patent/EP1896655A1/de not_active Withdrawn
- 2006-03-27 WO PCT/EP2006/061052 patent/WO2006120059A1/de not_active Application Discontinuation
- 2006-03-27 JP JP2008510525A patent/JP2008540993A/ja active Pending
- 2006-03-27 CN CNA2006800164700A patent/CN101189392A/zh active Pending
- 2006-03-27 BR BRPI0612971-4A patent/BRPI0612971A2/pt not_active IP Right Cessation
-
2007
- 2007-10-31 US US11/930,965 patent/US20080098613A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE497034C (de) * | 1930-05-01 | Bernhard Wicky | Drehbarer Trockenzylinder fuer Papier-, Textil- und aehnliche Maschinen | |
GB939926A (en) * | 1960-02-08 | 1963-10-16 | Beloit Iron Works | Improvements in or relating to dryer drums |
US3481050A (en) * | 1968-02-02 | 1969-12-02 | Newport News S & D Co | Rotary pressure vessel |
US3724094A (en) * | 1971-02-16 | 1973-04-03 | Kimberly Clark Co | Rotary drying drum |
DE2523829A1 (de) * | 1975-05-30 | 1976-12-02 | Escher Wyss Gmbh | Trocknungszylinder fuer eine papiermaschine |
EP0740018A2 (de) * | 1995-04-24 | 1996-10-30 | The Johnson Corporation | Stationärer Siphon für Wärmeaustauscherrollen |
WO1997021969A1 (en) * | 1995-12-11 | 1997-06-19 | Salminen Reijo K | Processing roll apparatus and method |
EP1419879A1 (de) * | 2002-11-15 | 2004-05-19 | Mitsubishi Heavy Industries, Ltd. | Beheizte Walze für eine Wellenpappemaschine |
Also Published As
Publication number | Publication date |
---|---|
US20080098613A1 (en) | 2008-05-01 |
BRPI0612971A2 (pt) | 2010-12-14 |
JP2008540993A (ja) | 2008-11-20 |
CN101189392A (zh) | 2008-05-28 |
EP1896655A1 (de) | 2008-03-12 |
DE102005022233A1 (de) | 2006-11-16 |
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