EP2546411B1 - Procédé et dispositif de surveillance de l'état d'une habillage de machine à papier - Google Patents

Procédé et dispositif de surveillance de l'état d'une habillage de machine à papier Download PDF

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Publication number
EP2546411B1
EP2546411B1 EP20120173816 EP12173816A EP2546411B1 EP 2546411 B1 EP2546411 B1 EP 2546411B1 EP 20120173816 EP20120173816 EP 20120173816 EP 12173816 A EP12173816 A EP 12173816A EP 2546411 B1 EP2546411 B1 EP 2546411B1
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EP
European Patent Office
Prior art keywords
fabric
measuring
measuring device
moved
starting position
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.)
Active
Application number
EP20120173816
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German (de)
English (en)
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EP2546411A1 (fr
Inventor
Oliver Crasser
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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Publication date
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Publication of EP2546411A1 publication Critical patent/EP2546411A1/fr
Application granted granted Critical
Publication of EP2546411B1 publication Critical patent/EP2546411B1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts
    • D21F1/325—Washing wire-cloths or felts with reciprocating devices
    • 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
    • D21G9/0036—Paper-making control systems controlling the press or drying section

Definitions

  • the invention relates to a method and a device for determining at least one state parameter of a circumferential covering in a machine for producing and / or treating a material web, in particular paper, tissue or board web, by means of a measuring device.
  • Measuring methods and measuring devices in which a state parameter, such as the water permeability, is determined by means of a measuring device are sufficiently known from the prior art.
  • water permeability is currently used, as for example in the documents DE 199 17 553 A1 . DE 697 10 356 T2 . EP 0 024 205 B1 or EP 0 383 486 A2 described.
  • the measuring head In the known measuring devices and procedures, however, it always comes back to interference, especially when the fabric to be measured is too narrow or runs out of the middle. In these cases it happens that the measuring head is extended in the direction of the clothing without it striking the clothing. If the measuring head is now moved along the traverse in the measuring direction, it inevitably hits the edge of the clothing. This usually has devastating consequences. The measuring head shifts the clothing laterally, which leads to the formation of wrinkles or the destruction of the clothing, in addition, the measuring head can be destroyed.
  • the invention has for its object to further optimize the method and apparatus of the type mentioned and to increase the reliability.
  • a method of the aforementioned type in which by means of a measuring device, which moves with the aid of a guide device from a rest position into a working area, brought there for measuring in contact with the clothing and during the measuring process in which the measuring device on the clothing surface is moved, is held on the surface of the clothing, wherein the measuring device is moved from the rest position to a start position, which lies in the region of the clothing, and from there first a first width range in the direction of clothing edge measured and then from the start position, a second width range in the direction Stringline missing.
  • the method of the measuring process thus differs from the prior art in that, in order to produce a span-wide measurement, the measuring head passes through two loops.
  • the starting point of both loops lies in an area of the clothing, which allows a safe extension of the measuring head.
  • the measurement results of the first and second latitude range, ie the two loops, are then combined in an evaluation unit to form a status profile. So that as before a complete condition profile is created.
  • the starting point or starting position should preferably be in the middle of the machine or be the center of the machine. Especially if the starting point in the middle of the machine can be monitored with the measuring process, the width and the position of the fabric.
  • the measuring device can also be lifted off the clothing surface before reaching the clothing edges and be moved back from there directly to the starting position or to the rest position.
  • the measuring device moves in measuring position beyond the clothing edges and then lifted off the clothing surface plane and from there to the starting position or to the rest position is moved back.
  • the measuring device can be designed for various measurements.
  • it can be equipped with a measuring device for measuring the permeability and / or the humidity and / or the temperature.
  • a device for cleaning the fabric may be present.
  • the inventive device is constructed such that the measuring device, along a guide device is movable and can be pressed by means of a pressing mechanism against the fabric and can be lifted from this again.
  • the measuring head of the measuring device comprises a threading device.
  • This may be a bracket attached to the gauge head that allows a smooth glide beyond the edge of the clothing.
  • the device can generally be used in the area of the entire machine, but in particular can be arranged for monitoring and analyzing press felts, in particular before and / or after a press device.
  • FIG. 1 shows the method according to the prior art.
  • the circulating covering 5 can be, for example, a press felt in a machine for producing paper.
  • the measuring device 2, which comprises the measuring head, is fastened to the guide device 1 and can be moved transversely to the running direction of the clothing 1. For the actual measuring operation, the measuring device 2 is lowered or moved to the clothing, so that a secure contact between the clothing and Meßkopfmessober Assembly exists without the risk of lifting.
  • the scanning process in the prior art is as follows.
  • the measuring device is moved from the rest position 3, which is outside the clothing width, to a starting position 7, which lies in the region of the clothing edge.
  • the measuring head is pivoted or moved onto the clothing surface 6 and pressed.
  • the measuring head is now moved by means of the guide device 1 transversely to the circumferential clothing 5 and the determined measurement data are forwarded to an evaluation and processed into a state profile.
  • the measuring head Shortly before the measuring head reaches the clothing edge, at the end position 8, the measuring head is lifted off the clothing 5 again.
  • FIG. 2 the scanning process of the method according to the invention is shown.
  • the overall device does not differ substantially from that of the prior art.
  • the scanning process is as follows.
  • the measuring device is moved from the rest position 3, which is outside the clothing width, to a starting position 7, which lies in the region of the clothing center.
  • the measuring head is pivoted or moved onto the clothing surface 6 and pressed.
  • the measuring head is now moved by means of the guide device 1 transversely to the circumferential clothing 5 in the direction of a clothing edge.
  • the measuring head is again lifted off the clothing surface and moved back to the starting point 7.
  • the measuring head has been driven through a first loop and has measured a first width range 9.
  • the measurement data of the two loops, the first and second width range 9, 10 are then assembled in the evaluation unit to form an entire state profile.
  • the measuring device In the event that the measuring head is moved beyond one of the clothing edges, the measuring device is provided with a guiding or threading device. It is thus possible for the measuring head to slide gently from the edge of the clothing or for the measuring head to fall under the clothing in the pivoted-in state, in particular if it is not properly tensioned or supported.

Landscapes

  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Procédé pour déterminer au moins un paramètre d'état d'un entoilage périphérique (5) dans une machine de fabrication et/ou de traitement d'une nappe de matériau, en particulier d'une nappe de papier, papier-tissu ou carton, au moyen d'un dispositif de mesure (2) qui, à l'aide d'un dispositif de guidage (1), est déplacé d'une position de repos (3) dans une région de travail (4), est amené à cet endroit en contact avec l'entoilage (5) pour effectuer la mesure et, pendant l'opération de mesure dans laquelle le dispositif de mesure (2) est déplacé le long de la surface de l'entoilage (6), est maintenu sur la surface de l'entoilage (6),
    caractérisé en ce que
    le dispositif de mesure (2) est déplacé de la position de repos (3) à une position de départ (7) qui est située dans la région de l'entoilage (5), et mesure, à partir de là, tout d'abord une première région de largeur (9) dans la direction du bord de l'entoilage puis, à partir de la position de départ (7), mesure une deuxième région de largeur (10) dans la direction du bord de l'entoilage.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les résultats de mesure de la première et de la deuxième région de largeur (9, 10) sont rassemblés dans une unité d'analyse pour fournir un profil d'état.
  3. Procédé selon la revendication 1,
    caractérisé en ce que
    la position de départ (7) est située dans la région du milieu de la machine.
  4. Procédé selon la revendication 1,
    caractérisé en ce que
    la position de départ (7) est le milieu de la machine.
  5. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    le dispositif de mesure (2), avant d'atteindre les bords de l'entoilage, est soulevé de la surface de l'entoilage (6) et est déplacé jusqu'à la position de départ (7) ou jusqu'à la position de repos (3).
  6. Procédé selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    le dispositif de mesure (2), dans la position de mesure, est déplacé au-delà des bords de l'entoilage et est seulement alors soulevé du plan de la surface de l'entoilage (6) et est déplacé jusqu'à la position de départ (7) ou jusqu'à la position de repos (3).
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    la perméabilité et/ou l'humidité et/ou la température sont mesurées à l'aide du dispositif de mesure (2).
  8. Dispositif pour déterminer au moins un paramètre d'état d'un entoilage périphérique (5) dans une machine de fabrication et/ou de traitement d'une nappe de matériau, en particulier d'une nappe de papier, papier-tissu ou carton, au moyen d'un dispositif de mesure (2) qui, à l'aide d'un dispositif de guidage (1), peut être déplacé d'une position de repos (3) dans une région de travail, peut être amené à cet endroit en contact avec l'entoilage (5) pour effectuer la mesure et, pendant l'opération de mesure dans laquelle le dispositif de mesure (2) est déplacé le long de la surface de l'entoilage (6), peut être maintenu sur la surface de l'entoilage (6),
    caractérisé en ce que
    le dispositif de mesure (2) peut être déplacé de la position de repos (3) à une position de départ (7) qui est située dans la région de l'entoilage (6), et mesure, à partir de là, tout d'abord une première région de largeur (9) dans la direction du bord de l'entoilage puis, à partir de la position de départ (7), mesure une deuxième région de largeur (10) dans la direction du bord de l'entoilage.
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    la tête de mesure du dispositif de mesure (2) comprend un dispositif de mesure de la perméabilité et/ou un capteur d'humidité et/ou de température.
  10. Dispositif selon la revendication 8 ou 9,
    caractérisé en ce que
    la tête de mesure du dispositif de mesure (2) comprend un dispositif d'enfilage (11).
  11. Dispositif selon l'une quelconque des revendications 8 à 10,
    caractérisé en ce que
    le dispositif de mesure d'un feutre de presse peut être disposé avant et/ou après un dispositif de pressage.
EP20120173816 2011-07-13 2012-06-27 Procédé et dispositif de surveillance de l'état d'une habillage de machine à papier Active EP2546411B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110079060 DE102011079060A1 (de) 2011-07-13 2011-07-13 Verfahren und Vorrichtung zur Zustandsüberwachung einer Bespannung

Publications (2)

Publication Number Publication Date
EP2546411A1 EP2546411A1 (fr) 2013-01-16
EP2546411B1 true EP2546411B1 (fr) 2015-01-07

Family

ID=46458203

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120173816 Active EP2546411B1 (fr) 2011-07-13 2012-06-27 Procédé et dispositif de surveillance de l'état d'une habillage de machine à papier

Country Status (2)

Country Link
EP (1) EP2546411B1 (fr)
DE (1) DE102011079060A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ194626A (en) 1979-08-16 1984-11-09 Albany Int Corp Maintaining permeability of paper machine felts
GB8903357D0 (en) 1989-02-14 1989-04-05 Morley Michael J Improvements in and relating to shower installations for paper making machines
US5725737A (en) 1996-09-18 1998-03-10 Pulp And Paper Research Institute Of Canada Apparatus for the detection of holes and plugged spots
SE512011C3 (sv) 1998-04-23 2000-01-31 Lorentzen & Wettre Ab Foerfarande och apparat foer maetning av permeabiliteiten foer vatten hos genomtraenglia skikt
DE19822185A1 (de) * 1998-05-16 1999-11-18 Voith Sulzer Papiertech Patent Vorrichtung und Verfahren zum Reinigen eines Transportbandes

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EP2546411A1 (fr) 2013-01-16
DE102011079060A1 (de) 2013-01-17

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