EP0658225B1 - Dispositif permettant d'evacuer un condensat d'un cylindre de sechage rainure, a l'aide de tuyaux de decharge de condensat - Google Patents

Dispositif permettant d'evacuer un condensat d'un cylindre de sechage rainure, a l'aide de tuyaux de decharge de condensat Download PDF

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Publication number
EP0658225B1
EP0658225B1 EP94920867A EP94920867A EP0658225B1 EP 0658225 B1 EP0658225 B1 EP 0658225B1 EP 94920867 A EP94920867 A EP 94920867A EP 94920867 A EP94920867 A EP 94920867A EP 0658225 B1 EP0658225 B1 EP 0658225B1
Authority
EP
European Patent Office
Prior art keywords
condensate
collector
drying cylinder
cylinder
grooves
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.)
Expired - Lifetime
Application number
EP94920867A
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German (de)
English (en)
Other versions
EP0658225A1 (fr
Inventor
Winfried Haessner
Iwan Lasschuit
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 Sulzer Papiermaschinen GmbH
Original Assignee
Voith Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0658225A1 publication Critical patent/EP0658225A1/fr
Application granted granted Critical
Publication of EP0658225B1 publication Critical patent/EP0658225B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F5/10—Removing condensate from the interior of the cylinders

Definitions

  • the superheated steam is fed in via a steam pipe coaxial with the bearing of the drying cylinder; the condensate in turn is passed via the condensate drain pipes to a collector and a hollow shaft mounted coaxially in the drying cylinder, from where the condensate is drawn off via a condensate drain pipe which is led through the steam pipe or through the diametrical end face of the drying cylinder.
  • GB-A-2 011 025 is seen as the closest prior art, the connecting element between the collector and the condensate drain pipe running approximately in the circumferential direction of the drying cylinder and being of flexible design.
  • a flexible connecting element is provided for the functional connection of the condensate drain pipes to the collector, the connecting elements extending radially to the circumferential direction of the cylinder jacket from the collector and each connecting element being a compensator bridging the clearance between the condensate drain pipe and the collector .
  • FIGS. 2 and 3 show a drying cylinder, designated as a whole by 1, which in a known manner has an internally grooved (see FIGS. 2 and 3) cylinder jacket 12 and at each end a cylinder cover with an associated hollow journal 13 and 15, respectively.
  • the drying cylinder 1 is intended to be heated with superheated steam D, which passes through the one (right in the drawing) bearing pin 15 into the interior of the Drying cylinder 1 arrives.
  • the condensate formed in the drying cylinder 1 as a result of cooling is fed to a hollow shaft 17 with the aid of a plurality of condensate riser pipes 14 distributed over the circumference in a star shape.
  • This hollow shaft is guided coaxially to the axis of rotation 10 of the drying cylinder 1 through the second (in the drawing left) bearing journal 13 and feeds the condensate to a condensate discharge line (see arrow X), from where the condensate is fed, for example, to a steam separator.
  • the hollow shaft 17 is fastened to the bearing journal 13 by means of a holder 16 and extends through it to the outside, where it connects to the condensate discharge line X.
  • the radially outer ends of the condensate riser pipes 14 are connected to a collector 18 which is arranged at a distance from the inner wall of the drying cylinder 1 and which extends in one piece or in several parts essentially over the entire length of the drying cylinder 1.
  • the collector 18 is in turn connected to a plurality of condensate drain pipes (20 corresponding to FIGS. 2 and 3), each of which is individually assigned to a groove in the grooved inner wall of the drying cylinder 1 and is immersed in these grooves.
  • the drying cylinder described with reference to FIG. 1 and the dewatering device implemented are state of the art.
  • the details regarding the connection and assignment of the condensate drain pipes 20 in the drying cylinder are to be explained below with reference to FIGS. 2 and 3.
  • the collector 18 is connected to the hollow shaft via the condensate riser pipe 14, wherein it does not abut the inner wall of the cylinder, that is to say the ribs 22 of the grooved cylinder jacket 12;
  • the collector 18 can basically have any geometric hollow shape.
  • the condensate drain pipes 20 are now fixed, in particular screwed, to the ribs 22 of the cylinder jacket 12 by means of a fastening tab 24 or - grouped in groups - a fastening strip 26.
  • the fastening tab 24 or the fastening strip 26 are dimensioned and matched to one another in terms of width so that the condensate drain pipes 20 can always freely immerse in the grooves 23 and are not in any way stressed by thermal expansion of the individual structural components.
  • the condensate drain pipes 20 can also be connected and connected to the fastening tab 24 or the fastening strip 26 in such a way that their immersion depth in the respective groove 23 can be freely selected (compare ⁇ ). Different thermal drying conditions can thus be set in a very targeted manner across the width of the drying cylinder 1.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Paper (AREA)

Claims (2)

  1. Cylindre sécheur (1) rotatif, chauffé à la vapeur, pourvu d'un dispositif pour l'évacuation de condensat du cylindre, concernant en particulier un cylindre sécheur (1) d'une machine à papier, dans lequel est prévu, sur la paroi intérieure, un grand nombre de rainures (23) s'étendant dans la direction périphérique de l'enveloppe de cylindre (12), dans lequel à chaque rainure (23) est associé un tube d'évacuation de condensat (20) avec direction d'arrivée sensiblement radiale par rapport à l'axe de rotation (10) du cylindre, par lequel le condensat formé est envoyé à un collecteur (18) et de là à une conduite d'écoulement de condensat (14), dans lequel les tubes d'évacuation de condensat (20) sont fixés dans la zone de la rainure (23) respective, à distance prédéterminée du fond de la rainure et dans lequel, pour la liaison fonctionnelle des tubes d'évacuation de condensat (20) avec le collecteur (18), il est prévu un élément de liaison (40) flexible, caractérisé en ce que les éléments de liaison partent du collecteur (18), radialement par rapport à la direction périphérique de l'enveloppe de cylindre (12), chaque élément de liaison étant un compensateur (40) franchissant la distance libre entre le tube d'évacuation de condensat (20) et le collecteur (18).
  2. Dispositif selon la revendication 1, caractérisé en ce que chaque tube d'évacuation de condensat (20) est pourvu d'un disque (44), d'un épaulement ou similaire, qui peut être appliqué fixement sur la paroi intérieure du cylindre, c'est-à-dire sur deux nervures (22) délimitant la rainure (23).
EP94920867A 1993-07-01 1994-06-30 Dispositif permettant d'evacuer un condensat d'un cylindre de sechage rainure, a l'aide de tuyaux de decharge de condensat Expired - Lifetime EP0658225B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4321902 1993-07-01
DE4321902 1993-07-01
PCT/DE1994/000750 WO1995001477A1 (fr) 1993-07-01 1994-06-30 Dispositif permettant d'evacuer un condensat d'un cylindre de sechage rainure, a l'aide de tuyaux de decharge de condensat

Publications (2)

Publication Number Publication Date
EP0658225A1 EP0658225A1 (fr) 1995-06-21
EP0658225B1 true EP0658225B1 (fr) 1997-02-05

Family

ID=6491699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94920867A Expired - Lifetime EP0658225B1 (fr) 1993-07-01 1994-06-30 Dispositif permettant d'evacuer un condensat d'un cylindre de sechage rainure, a l'aide de tuyaux de decharge de condensat

Country Status (7)

Country Link
US (1) US5537756A (fr)
EP (1) EP0658225B1 (fr)
JP (1) JPH08500864A (fr)
AT (1) ATE148751T1 (fr)
BR (1) BR9405539A (fr)
DE (1) DE59401763D1 (fr)
WO (1) WO1995001477A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19707876C2 (de) * 1997-02-27 2002-09-26 Voith Paper Patent Gmbh Walzenanordnung
DE19809080C2 (de) * 1997-12-17 2003-08-14 Voith Paper Patent Gmbh Dampfbeheizte Walze
SE535153C2 (sv) * 2010-09-08 2012-05-02 Metso Paper Karlstad Ab Positioneringsanordning för evakueringsrör i en torkcylinder
SE535152C2 (sv) * 2010-09-08 2012-05-02 Metso Paper Karlstad Ab Positioneringsanordning för evakueringsrör i en torkcylinder
SE541319C2 (en) 2017-11-22 2019-07-02 Valmet Oy An intermediate product in the manufacturing process of a yankee drying cylinder
US10676909B2 (en) 2017-11-22 2020-06-09 Rebecca Jarrar Contamination barrier for plumbing systems and method of using same
PL3556936T3 (pl) 2018-04-17 2020-08-10 Valmet Aktiebolag Sposób wytwarzania stalowego cylindra suszącego typu yankee
US11035570B2 (en) * 2018-08-14 2021-06-15 Airgas, Inc. Method for removing large amounts of condensate from an underground vault steam system during startup

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE360834C (de) * 1921-07-12 1922-10-07 Tellschow Geb Briefumschlagfalz- und -druckmaschine
US1537792A (en) * 1924-03-21 1925-05-12 Inland Empire Paper Co Drier for paper machines
US3473238A (en) * 1966-04-05 1969-10-21 Scott Paper Co Rotary cylinder dryer
US3513565A (en) * 1968-11-08 1970-05-26 Georgia Pacific Corp Rotary drum dryer
US3808700A (en) * 1972-12-26 1974-05-07 Kimberly Clark Co Rotary drying drum
AT360834B (de) * 1977-12-02 1981-02-10 Escher Wyss Gmbh Trockenzylinder fuer papiermaschinen
GB2011025B (en) * 1977-12-03 1982-04-21 Beloit Walmsley Ltd Yankee dryers
DE2948203C2 (de) * 1979-11-30 1983-03-31 J.M. Voith Gmbh, 7920 Heidenheim Trockenzylinder für Papiermaschinen
IT1144735B (it) * 1981-06-09 1986-10-29 Beloit Italia Spa Cilindro essiccatore del foglio di carta per un impianto di fabbricazione continua della carta
DE3148948C2 (de) * 1981-12-10 1983-12-15 J.M. Voith Gmbh, 7920 Heidenheim Einrichtung zum Abführen von Kondensat aus einem dampfbeheizten, drehbaren Trocknungszylinder
FI83247C (fi) * 1990-06-19 1991-06-10 Martti Ensio Olavi Partio Anordning foer avlaegsnande av vaetska fraon en roterande cylinder eller vals.

Also Published As

Publication number Publication date
JPH08500864A (ja) 1996-01-30
WO1995001477A1 (fr) 1995-01-12
BR9405539A (pt) 1999-09-08
EP0658225A1 (fr) 1995-06-21
US5537756A (en) 1996-07-23
DE59401763D1 (de) 1997-03-20
ATE148751T1 (de) 1997-02-15

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