EP1431456A1 - Procédé et appareil pour faire fonctionner une machine de production ou de finition d'un matériau en bande - Google Patents

Procédé et appareil pour faire fonctionner une machine de production ou de finition d'un matériau en bande Download PDF

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Publication number
EP1431456A1
EP1431456A1 EP03104780A EP03104780A EP1431456A1 EP 1431456 A1 EP1431456 A1 EP 1431456A1 EP 03104780 A EP03104780 A EP 03104780A EP 03104780 A EP03104780 A EP 03104780A EP 1431456 A1 EP1431456 A1 EP 1431456A1
Authority
EP
European Patent Office
Prior art keywords
infrared camera
machine
material web
area
infrared
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.)
Withdrawn
Application number
EP03104780A
Other languages
German (de)
English (en)
Inventor
Thomas Gindele
Bernd Stibi
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 Paper 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1431456A1 publication Critical patent/EP1431456A1/fr
Withdrawn legal-status Critical Current

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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
    • D21G9/0009—Paper-making control systems

Definitions

  • the invention relates to a method for operating a machine for Production and / or finishing of a material web, in particular a paper web, in the area of at least a section of the material web and / or the temperature of the machine, especially on a cylinder or roller is captured by an infrared camera.
  • this object is achieved in one of the methods mentioned at the beginning Art solved in that the triggering of the infrared camera by a trigger device connected to the infrared camera, by which the images recorded by the infrared camera to a fixed point or a fixed area can be determined.
  • a trigger device connected to the infrared camera, by which the images recorded by the infrared camera to a fixed point or a fixed area can be determined.
  • a high-resolution high-speed infrared camera takes Images at a speed sufficient to accommodate changing processes in the machine direction with the desired accuracy.
  • the invention also relates to a method for operating a machine for Production and / or finishing of a material web, in particular a paper web, in the area of at least one section of the machine, in particular on a cylinder or a roller, the temperature using an infrared camera is recorded.
  • this object is achieved in that the triggering of the Infrared camera through one connected to the infrared camera Trigger device takes place through which the recorded by the infrared camera Images can be fixed to a fixed point or surface.
  • All can be hereby in one machine for manufacturing and / or Refinement of a material web of fast moving parts with high spatial resolution record in order to obtain their temperatures and temperature profiles.
  • the individual Pictures of a fixed point of a moving machine component for example, a roller or a cylinder.
  • a suitable computer Software for example mapping software, and the sorting of the images the computer allows exact assignments of the spatial location and the changes over time of the measured temperature profiles on the machine to.
  • Stripes can be formed using an infrared camera installed in the machine on rotating roller covers or cylinder coatings determine. Also temperature distributions on the material web, especially the Paper web, for mechanical dewatering in the wire and press section can be determined. Temperature distributions during thermal drying of the Material web in the dryer section can also be determined. This also serves Processes for this, temperature distributions on the different fabrics, d. H. on sieves, felts or fleeces in the machine.
  • Trigger device or a common trigger device can be triggered.
  • At least one infrared camera during the measurement and / or between Measurement phases is traversed to the direction of travel of the material web.
  • the temperature curve can be viewed across the entire width of the material web a specific, fixed position in the machine or the machine, for example, using a roller.
  • a longitudinal displacement of the Infrared camera can be provided.
  • Those of the infrared camera or of the infrared cameras are advantageous captured images a computer for processing and evaluation the image data and for generating process data
  • the process data can also be used to perform a change record and evaluate between different process types, in particular when changing grades in a paper machine.
  • the process data can be used to localize faults, in particular of strip-shaped temperature profiles in the direction of the longitudinal axis a roller or a cylinder of the machine.
  • the invention also relates to a device in which the infrared camera with a trigger device and additionally with a computer for evaluation of image data obtained from the infrared camera is connected.
  • the trigger device is advantageously designed as a tachometer, or a device for measuring the speed is provided.
  • the trigger device can also be done by software in a for processing this software realize trained computing device.
  • the fact that the infrared camera by means of a movable support arrangement transverse to the running direction of the material web and / or along the running direction of the material web can be used at many points on the machine become.
  • the infrared camera preferably has with respect to the carrier arrangement at least one translational and / or one rotational degree of freedom.
  • the infrared camera is equipped with a lens to cover an angle of, for example, at least 20 ° with respect to the object to be mapped.
  • the lens can also be used Use a wide-angle lens that, for example, enables an angle of up to 60 °.
  • the infrared camera can also be used in the area of units for manufacturing a pulp suspension, from pipelines for feeding the pulp suspension to the machine, in the area of a wire section, before, in or after a Press section, in the area of drying cylinders, felts, nonwovens or Sieving a dryer section, in the area of a calender, in the area of coating units or arrange a size press.
  • the trigger device 5 receives in turn a signal for generating the trigger signal, for example due to the speed of the cylinders and rollers of the machine or by an adapted Analysis software of a computer, for example the same Computer 6, to which the infrared camera 2 is connected, for example, up to 20 m long cable 7 emits its output signals.
  • the computer 6 runs a statistical Processing of the images recorded by the camera 2.
  • the trigger device 5 captures those recorded by the camera 2 Images set to a fixed point or area so that it it is possible to change a temperature on this surface or on this Observe point during the production of paper web 1. That from the Camera 2 captured image has 320 x 240 pixels. Alternative image sizes depending on the recording speed are 320 x 16 pixels, 320 x 48 pixels or 320 x 80 pixels. With round surfaces, depending on the distance, a smaller window will appear added. In order to accommodate wide rollers, standard lenses are used instead of 20 ° Lenses with an opening angle of 60 ° are used. The Subsequent processing and sorting of the images allows exact assignments the spatial position and the temporal changes in the measured temperature profiles in the machine and cross directions.
  • a paper machine 8 (FIGS. 2a, b) has units 9 for producing a fiber suspension and pipes 10 for feeding the pulp suspension a headbox 11, which this in a gap former with a twin wire section 12 brings.
  • the pipes 10 and in the twin-wire section 12 infrared cameras 2 can be arranged.
  • Infrared cameras 2 can be used both before and after the press section, in particular in the area of nip rollers 17, 18 or that of the nip roller 18 opposite pickup roller 19.
  • drying cylinders 21 and deflection rollers are used 22 wrapped around by dry felt 23. Also leave the drying cylinder 21 observe themselves with and without paper web occupancy from an infrared camera 2, for example at positions B, C and D. Also in the area of others Dry felts can be recorded at points E, F and G with a camera 2 perform.
  • the dryer section 20 has a calender 24 with a plurality of nip rolls 25, on them as well as on the top of the web in area H in front of the calender 24, on the underside of the web in area I, also in front of the calender 24, or in area J after the calender 24 observations using the camera 2 possible are.
  • This also applies to a device (not shown here) for Apply a coating to the paper web, a size press or a Winding machine for winding the paper web, the camera 2 the aggregates in particular both upstream and downstream is attached to the To be able to determine temperature changes in the respective unit.
  • FIG. 3 shows a temperature profile of a temperature T as a function of the image field height BF on a calender roll, which is shown from top to bottom, wherein the temperature occupies a range of 1 to 2 ° C and a stripe-shaped Structure (barring) becomes recognizable.
  • FIG. 4 is a structure of strip-shaped and sectional temperature profiles to recognize that with a high-speed infrared camera according to the invention 2 using a trigger device 5 on a rotating roller Paper machine were included.
  • An arrow DR shows the direction of rotation the roller. Both in the direction of rotation (vertical course) and perpendicular to Direction of rotation (horizontal course), in the direction of the longitudinal axis of the roller Temperature profiles recognizable.

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  • Paper (AREA)
EP03104780A 2002-12-21 2003-12-18 Procédé et appareil pour faire fonctionner une machine de production ou de finition d'un matériau en bande Withdrawn EP1431456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002160464 DE10260464A1 (de) 2002-12-21 2002-12-21 Verfahren und Vorrichtung zum Betreiben einer Maschine zum Herstellen und/oder Veredeln einer Materialbahn
DE10260464 2002-12-21

Publications (1)

Publication Number Publication Date
EP1431456A1 true EP1431456A1 (fr) 2004-06-23

Family

ID=32336565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104780A Withdrawn EP1431456A1 (fr) 2002-12-21 2003-12-18 Procédé et appareil pour faire fonctionner une machine de production ou de finition d'un matériau en bande

Country Status (2)

Country Link
EP (1) EP1431456A1 (fr)
DE (1) DE10260464A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076454A1 (fr) * 2009-12-23 2011-06-30 Metso Paper, Inc. Procédé et dispositif pour détecter des défauts de surface sur des cylindres
WO2015001196A1 (fr) * 2013-07-05 2015-01-08 Procemex Oy Synchronisation d'imagerie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018146A1 (fr) * 1990-05-24 1991-11-28 Vickerys Limited Ameliorations relatives a la fabrication de materiaux en feuille
US6053040A (en) * 1998-08-03 2000-04-25 Callender; Anne System for the detection and control of paper machine profiles
WO2000045156A1 (fr) * 1999-01-28 2000-08-03 Metso Paper Automation Oy Procede de controle de la qualite d'une bande de papier
EP1258722A1 (fr) * 2001-05-11 2002-11-20 Metso Paper Automation OY Procédé de contrôle de qualité et d'état d'un objet à l'aide d'imagerie thermique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911394A1 (de) * 1999-03-15 2000-09-21 Voith Sulzer Papiertech Patent Verfahren zum Betreiben einer Maschine zur Herstellung und/oder Veredelung von Materialbahnen
AU2001285973A1 (en) * 2000-09-06 2002-03-22 Metso Paper Inc. Method and equipment for cleaning and maintaining rolls
DE10131281A1 (de) * 2001-06-28 2003-01-09 Voith Paper Patent Gmbh Bahnüberwachung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018146A1 (fr) * 1990-05-24 1991-11-28 Vickerys Limited Ameliorations relatives a la fabrication de materiaux en feuille
US6053040A (en) * 1998-08-03 2000-04-25 Callender; Anne System for the detection and control of paper machine profiles
WO2000045156A1 (fr) * 1999-01-28 2000-08-03 Metso Paper Automation Oy Procede de controle de la qualite d'une bande de papier
EP1258722A1 (fr) * 2001-05-11 2002-11-20 Metso Paper Automation OY Procédé de contrôle de qualité et d'état d'un objet à l'aide d'imagerie thermique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076454A1 (fr) * 2009-12-23 2011-06-30 Metso Paper, Inc. Procédé et dispositif pour détecter des défauts de surface sur des cylindres
WO2015001196A1 (fr) * 2013-07-05 2015-01-08 Procemex Oy Synchronisation d'imagerie
US9532015B2 (en) 2013-07-05 2016-12-27 Procemex Oy Synchronization of imaging

Also Published As

Publication number Publication date
DE10260464A1 (de) 2004-07-01

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