EP1908877B1 - Installation de séchage et procédé d'enfiler une bande - Google Patents

Installation de séchage et procédé d'enfiler une bande Download PDF

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Publication number
EP1908877B1
EP1908877B1 EP07111928A EP07111928A EP1908877B1 EP 1908877 B1 EP1908877 B1 EP 1908877B1 EP 07111928 A EP07111928 A EP 07111928A EP 07111928 A EP07111928 A EP 07111928A EP 1908877 B1 EP1908877 B1 EP 1908877B1
Authority
EP
European Patent Office
Prior art keywords
transfer
strip
drying
sensor
drying assembly
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
EP07111928A
Other languages
German (de)
English (en)
Other versions
EP1908877A1 (fr
Inventor
Peter Kahl
Werner Goebel
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
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Voith Patent GmbH
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Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1908877A1 publication Critical patent/EP1908877A1/fr
Application granted granted Critical
Publication of EP1908877B1 publication Critical patent/EP1908877B1/fr
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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/04—Paper-break control devices

Definitions

  • the invention relates to a drying arrangement of a machine for producing and / or finishing a paper, board, tissue or another fibrous web, in which the fibrous web is guided for drying over heated drying cylinders and guide rolls, wherein the drying arrangement comprises a plurality of strip sensors for detecting a transfer strip the fibrous web, a plurality of transfer aids for guiding the transfer strip and a plurality of separating devices for separating the transfer strip has.
  • the invention also relates to methods for transferring a transfer strip of a paper, board, tissue or another fibrous web through the drying arrangement of a machine for producing and / or finishing the fibrous web, in which the fibrous web is guided for drying over heated drying cylinders and guide rolls, wherein the drying arrangement may have a plurality of strip sensors for detecting the transfer strip and has a plurality of transfer means for guiding the transfer strip and a plurality of separating means for separating the transfer strip
  • the document EP 1 057 932 A2 discloses a drying section of a paper machine comprising a drying cylinder.
  • the drying cylinders are arranged in two superimposed rows.
  • the paper web to be dried meanders through the dryer section and alternately comes into contact with the upper and lower drying cylinders and is pressed against them with drying screens.
  • blowing slabs are arranged on each drying cylinder in the region of the transfer strip position Scrape off the drying cylinder surface and convey it to the next drying cylinder using blown air.
  • Each scraper is equipped with a sensor for the transfer strip.
  • the sensor and the air supply system are coupled to a control unit. As soon as a sensor detects the transfer strip during the transfer process, the air supply of some of the following blow doctor blades is activated and that of the preceding blow doctor disabled.
  • the document WO2007 / 023209 A1 describes an arrangement for transferring a transfer strip in a single-row drying section of a paper machine with successive drying groups.
  • Blow dryers are provided on the drying cylinders.
  • the blowing blades of a drying group are supplied with blowing air independently of the other drying groups and activated at different times. As soon as the transfer strip is detected in a preceding drying group, the blowing air for the blowing doctor is activated in the following drying group.
  • the device comprises a separating device for separating the transfer strip and a performing device for carrying out the generated strip beginning on the subsequent structural unit.
  • a pivotable guide plate is provided in the region of the preceding unit. Between the guide plate and Auffuel issued arranged at a distance from the preceding assembly blast table is provided, which is associated with a device for generating at least one direction of the Aufkind recognized directed air jet.
  • the insertion of the fibrous web into the machine is usually carried out by means of at least one transfer strip, which is separated from the fibrous web and then passed through subsequent guide and / or treatment sections.
  • the object of the invention is therefore to make the transfer of the fibrous web safer and faster with the least possible effort and a manual
  • the drying arrangement comprises a plurality of successive transfer sections, which at least each associated with a strip sensor, a transfer auxiliary device and a separator, wherein the separator immediately follows the strip sensor, the strip sensors, the transfer auxiliary devices and the separating devices connected to a control device and the strip sensor of a transfer unit on detection of a disturbance of the transfer operation via the control means activates the separator of the upstream transfer unit.
  • the additional effort is limited due to the at least similar, preferably the same construction of the transfer units.
  • the transfer assist devices are preferably formed by transfer belts and / or blowing nozzles.
  • the transfer belts which follow in sections, guide the transfer strip directly over a certain distance and are usually activated only when required.
  • Blow nozzles are predominantly oriented in and / or counter to the direction of web travel and thus stabilize the run of the transfer strip. Since this much compressed air is needed, it is advantageous to reduce energy only the absolutely necessary Koch Kunststoffanges promoteden to activate.
  • the stripe sensor should activate the Koch Kunststoffs owned the current transfer unit after the detection of the transfer strip via the control device.
  • the others that follow are preferably inactive.
  • the strip sensor can in a known manner by an optical sensor, a thermal sensor, a pressure sensor, or the like. be formed.
  • Pressure sensors are advantageously used in suction devices which are intended to suck in the transfer strip. Missing the transfer strip so the vacuum in the suction device because of the uncovered area is considerably less than existing Koch Kunststoffstsammlung.
  • Separating devices can be advantageously formed by a blowpipe, which extends transversely to the web running direction and directed via a plurality of nozzles on activation of blowing air to the transfer strip.
  • the drying arrangement should have several drying groups.
  • drying cylinders are arranged below the fibrous web, as so impurities, web remnants or the web itself can be easily removed into the machine cellar.
  • the invention is also applicable to drying arrangements with one or several dryer groups of different construction, for example with two rows of drying cylinders.
  • the transfer units are each formed by a drying group or a drying group comprises several transfer units.
  • the drying arrangement comprises a plurality of successive transfer sections to which at least one strip sensor, a transfer auxiliary device and a separating device are assigned, wherein the separating device directly follows the strip sensor, the strip sensors, the transfer assist devices and the separating devices are connected to a control device and the strip sensor of a transfer unit upon detection of a disturbance of the transfer strip via the control means activates the separator of the upstream transfer unit and starts the repetition of the transfer operation in the upstream transfer unit.
  • a transfer strip can be done in particular in narrow fibrous webs also a web-wide transfer.
  • the transfer process is identical, only the widening omitted.
  • the drying arrangement comprises a plurality of successive Students confusee, which at least one each Engineer.s featured and a separation device is assigned, wherein the KochAvems featureden and the separation means are connected to a control device and activated upon detection of a disturbance of the transfer strip in a transfer unit via the control device, the separator of the upstream transfer unit and the repetition of the transfer operation is started in the upstream transfer unit.
  • the strip monitoring is carried out by the operating personnel. Upon detection of a fault in a transfer unit, the operator can activate the separator of the upstream transfer unit via the control device via a switch and thus restart the transfer process from there.
  • the drying arrangement has several drying groups, in which the fibrous web 1 is supported by the dryer fabric 2 of the respective drying group, meandering alternately over heated drying cylinders 3 and 4 suctioned guide rolls.
  • the drying cylinder 2 presses the fibrous web 1 against the hot surface of the drying cylinder 3 and thus favors the heat transfer to Fibrous web 1.
  • the drying group comprises a plurality of transfer units 11, 12 which are arranged one behind the other and which each begin with a strip sensor 7 and an immediately following separating device 8.
  • the strip sensor 7 is exemplified as an optical sensor which checks the presence of the transfer strip during the wrapping of the first guide roller 4 of the transfer unit.
  • Recognizability is significantly increased if the running during the wrapping of the guide roller 4 between this and the transfer strip drying wire 2 is made very dark.
  • the separating device 8 is formed by a blow pipe extending transversely to the web running direction in the region between the first guide roll 4 and the following drying cylinder 3 of the transfer unit 11, 12.
  • the nozzles of the blower tube direct compressed air to the transfer strip.
  • the drying cylinders 3 scraper 5 are assigned, which also carry a transfer aid 6 at the same time.
  • transfer assist devices 6 are each formed by a blowing nozzle aligned in and opposite to the running direction, the compressed air of which considerably improves the running of the fibrous web 1 or of the transfer strip.
  • the activation takes place, ie the compressed air control of the blowing nozzles via valves 9.
  • the strip sensors 7, the separating devices 8 and the transfer assist devices 6 or the associated control elements 9 are connected to a central control device 10.
  • the transfer assist devices 6 of this section are activated, so that the transfer strip easily passes through the transfer unit 11,12.
  • the transfer assist devices 6 of a possibly existing transfer unit 11, 12 are deactivated. This compressed air shutdown significantly reduces the energy requirement without affecting the run of the already transferred strip.
  • the control device 10 concludes that the transfer operation between these two strip sensors 7 has been disrupted.
  • control device 10 activates the separating device 8, which follows the first of these two strip sensors 7 in the web running direction, which leads to the separation of the transfer strip immediately after the strip sensor 7, which has last correctly detected the transfer strip.
  • This repetition of the transfer process in a transfer unit 11, 12 can be repeated several times. After reaching a predetermined maximum number of
  • control device 10 automatically detects a fault in the transfer process, interrupts it at a predetermined location and automatically restarts the transfer from there. This considerably speeds up the transfer process.

Landscapes

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

Claims (18)

  1. Agencement de séchage d'une machine de fabrication et/ou d'amélioration d'une nappe de papier, carton, papier-tissu ou d'une autre nappe fibreuse (1), dans lequel la nappe fibreuse (1) est guidée en vue de son séchage sur des cylindres de séchage chauffés (3) et des rouleaux directeurs (4), l'agencement de séchage possédant plusieurs capteurs de ruban (7) pour détecter un ruban de transfert de la nappe fibreuse (1), plusieurs dispositifs auxiliaires de transfert (6) pour guider le ruban de transfert et plusieurs dispositifs de sectionnement (8) pour sectionner le ruban de transfert, caractérisé en ce que l'agencement de séchage comprend plusieurs unités de transfert successives (11, 12), auxquelles sont associés au moins à chaque fois un capteur de ruban (7), un dispositif auxiliaire de transfert (6) et un dispositif de sectionnement (8), le dispositif de sectionnement (8) suivant immédiatement le capteur de ruban (7), les capteurs de ruban (7), les dispositifs auxiliaires de transfert (6) et les dispositifs de sectionnement (8) étant connectés à un dispositif de commande (10) et le capteur de ruban (7) d'une unité de transfert (11, 12), à la détection d'une perturbation de l'opération de transfert, activant, par le biais du dispositif de commande (10), le dispositif de sectionnement (8) de l'unité de transfert (11, 12) montée en amont.
  2. Agencement de séchage selon la revendication 1, caractérisé en ce que le capteur de ruban (7), à la détection du ruban de transfert, désactive par le biais du dispositif de commande (10) le dispositif auxiliaire de transfert (6) de l'unité de transfert (11, 12) montée en amont.
  3. Agencement de séchage selon la revendication 1 ou 2, caractérisé en ce que le capteur de ruban (7), après la détection du ruban de transfert, active par le biais du dispositif de commande (10) le dispositif auxiliaire de transfert (6) de l'unité de transfert actuelle (11, 12).
  4. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur de ruban (7) est formé par un capteur optique.
  5. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur de ruban (7) est formé par un capteur de pression.
  6. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que le capteur de ruban (7) est formé par un capteur thermique.
  7. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que les dispositifs auxiliaires de transfert (6) sont formés par des buses de soufflage.
  8. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que les dispositifs auxiliaires de transfert (6) sont formés par des bandes de transfert.
  9. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de sectionnement (8) est formé par un tube de soufflage.
  10. Agencement de séchage selon l'une quelconque des revendications précédentes, caractérisé en ce que celui-ci possède plusieurs groupes de séchage.
  11. Agencement de séchage selon la revendication 10, caractérisé en ce que la nappe fibreuse (1) est supportée dans les groupes de séchage par une toile de séchage (2), et est guidée en forme de méandres sur des cylindres de séchage chauds (3) et des rouleaux directeurs (4).
  12. Agencement de séchage selon la revendication 10 ou 11, caractérisé en ce que
    les unités de transfert (11, 12) sont formées par un groupe de séchage respectif.
  13. Agencement de séchage selon la revendication 10 ou 11, caractérisé en ce
    qu'un groupe de séchage comprend plusieurs unités de transfert (11, 12).
  14. Procédé de transfert d'un ruban de transfert d'une nappe de papier, carton, papier-tissu ou d'une autre nappe fibreuse (1) par l'agencement de séchage d'une machine de fabrication et/ou d'amélioration de la nappe fibreuse (1), dans lequel la nappe fibreuse (1) est guidée en vue de son séchage sur des cylindres de séchage chauffés (3) et des rouleaux directeurs (4), l'agencement de séchage possédant plusieurs capteurs de ruban (7) pour détecter le ruban de transfert, plusieurs dispositifs auxiliaires de transfert (6) pour guider le ruban de transfert et plusieurs dispositifs de sectionnement (8) pour sectionner le ruban de transfert, en particulier selon l'une quelconque des revendications précédentes, caractérisé en ce que
    l'agencement de séchage comprend plusieurs unités de transfert successives (11, 12) auxquelles sont associés au moins à chaque fois un capteur de ruban (7), un dispositif auxiliaire de transfert (6) et un dispositif de sectionnement (8), le dispositif de sectionnement (8) suivant immédiatement le capteur de ruban (7), les capteurs de ruban (7), les dispositifs auxiliaires de transfert (6) et les dispositifs de sectionnement (8) étant connectés à un dispositif de commande (10) et le capteur de ruban (7) d'une unité de transfert (11, 12), à la détection d'une perturbation du ruban de transfert, activant, par le biais du dispositif de commande (10), le dispositif de sectionnement (8) de l'unité de transfert (11, 12) montée en amont et la répétition de l'opération de transfert commençant dans l'unité de transfert montée en amont (11, 12).
  15. Procédé selon la revendication 14, caractérisé en ce que l'intervalle de temps nécessaire pour que le ruban de transfert parvienne d'un capteur de ruban (7) au capteur de ruban (7) de l'unité de transfert suivante (11, 12) est surveillé et en cas de dépassement d'un intervalle de temps prédéfini, on en conclut une perturbation de l'opération de transfert entre ces capteurs de ruban (7).
  16. Procédé selon les revendications 14 ou 15, caractérisé en ce que le capteur de ruban (7), à la détection du ruban de transfert, désactive par le biais du dispositif de commande (10) le dispositif auxiliaire de transfert (6) de l'unité de transfert (11, 12) montée en amont.
  17. Procédé selon l'une quelconque des revendications 14 à 16, caractérisé en ce que
    le capteur de ruban (7), après la détection du ruban de transfert, active par le biais du dispositif de commande (10) le dispositif auxiliaire de transfert (6) de l'unité de transfert actuelle (11, 12).
  18. Procédé de transfert d'un ruban de transfert d'une nappe de papier, carton, papier-tissu ou d'une autre nappe fibreuse (1) par l'agencement de séchage d'une machine de fabrication et/ou d'amélioration de la nappe fibreuse (1), dans lequel la nappe fibreuse (1) est guidée en vue de son séchage sur des cylindres de séchage chauffés (3) et des rouleaux directeurs (4), l'agencement de séchage possédant plusieurs dispositifs auxiliaires de transfert (6) pour guider le ruban de transfert et plusieurs dispositifs de sectionnement (8) pour sectionner le ruban de transfert, caractérisé en ce que
    l'agencement de séchage comprend plusieurs unités de transfert successives (11, 12), auxquelles sont associés au moins à chaque fois un dispositif auxiliaire de transfert (6) et un dispositif de sectionnement (8), les dispositifs auxiliaires de transfert (6) et les dispositifs de sectionnement (8) étant connectés à un dispositif de commande (10) et à la détection d'une perturbation du ruban de transfert dans une unité de transfert (11, 12) par le personnel, activant, par le biais du dispositif de commande (10), le dispositif de sectionnement (8) de l'unité de transfert (11, 12) montée en amont et la répétition de l'opération de transfert commençant dans l'unité de transfert montée en amont (11, 12).
EP07111928A 2006-10-05 2007-07-06 Installation de séchage et procédé d'enfiler une bande Not-in-force EP1908877B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006047487A DE102006047487A1 (de) 2006-10-05 2006-10-05 Trocknungsanordnung

Publications (2)

Publication Number Publication Date
EP1908877A1 EP1908877A1 (fr) 2008-04-09
EP1908877B1 true EP1908877B1 (fr) 2011-06-01

Family

ID=38895564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07111928A Not-in-force EP1908877B1 (fr) 2006-10-05 2007-07-06 Installation de séchage et procédé d'enfiler une bande

Country Status (4)

Country Link
EP (1) EP1908877B1 (fr)
CN (1) CN101187525B (fr)
AT (1) ATE511573T1 (fr)
DE (1) DE102006047487A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011087094A1 (de) * 2011-11-25 2013-05-29 Voith Patent Gmbh Verfahren zur Überführung einer Materialbahn von einer Trockenanordnung zu einer nachgeordneten Funktionseinheit und Trockenvorrichtung
CN102817270A (zh) * 2012-08-24 2012-12-12 玖龙纸业（太仓）有限公司 造纸机烘干部自动断纸防塞缸装置
FI11897U1 (fi) * 2017-11-16 2017-12-18 Valmet Technologies Oy Päänvientilaite sellukonetta varten
CN113878669A (zh) * 2021-09-24 2022-01-04 浙江哲丰新材料有限公司 一种造纸用断纸吹断装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553391A (en) * 1995-06-05 1996-09-10 Bakalar; Sharon F. Method and apparatus for heat treating webs
US5535527A (en) * 1995-06-07 1996-07-16 Valmet Corporation Method and arrangement in a multi-cylinder dryer of a paper machine
DE19632988C1 (de) * 1996-08-15 1998-01-22 Stora Publication Paper Ag Verfahren zur Beseitigung von Papierfehlern bei der kontinuierlichen Papierherstellung
US6193845B1 (en) * 1999-05-26 2001-02-27 Voith Sulzer Paper Technology North America Inc. Blow pipe tail threading system for paper-making machines
DE10045141A1 (de) * 2000-09-13 2002-03-21 Voith Paper Patent Gmbh Vorrichtung zum Überführen eines Streifens einer flexiblen Materialbahn
FI122337B (fi) * 2005-08-25 2011-12-15 Metso Paper Inc Menetelmä ja sovitelma päänviennissä rainanmuodostuskoneen kuivatusosalla

Also Published As

Publication number Publication date
CN101187525B (zh) 2011-07-06
DE102006047487A1 (de) 2008-04-10
ATE511573T1 (de) 2011-06-15
EP1908877A1 (fr) 2008-04-09
CN101187525A (zh) 2008-05-28

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