EP1637646A1 - Fabric for machine for producing a fibrous web - Google Patents

Fabric for machine for producing a fibrous web Download PDF

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Publication number
EP1637646A1
EP1637646A1 EP05106909A EP05106909A EP1637646A1 EP 1637646 A1 EP1637646 A1 EP 1637646A1 EP 05106909 A EP05106909 A EP 05106909A EP 05106909 A EP05106909 A EP 05106909A EP 1637646 A1 EP1637646 A1 EP 1637646A1
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EP
European Patent Office
Prior art keywords
machine
covering
section
fabric
microsensors
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.)
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Application number
EP05106909A
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German (de)
French (fr)
Inventor
Arved H. Westerkamp
Matthias Schmitt
Michael Straub
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Voith Patent GmbH
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Voith Patent GmbH
Voith Fabrics Patent GmbH
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Filing date
Publication date
Application filed by Voith Patent GmbH, Voith Fabrics Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1637646A1 publication Critical patent/EP1637646A1/en
Withdrawn legal-status Critical Current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
    • D21G9/0036—Paper-making control systems controlling the press or drying section
    • 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
    • D21F1/0027—Screen-cloths
    • 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
    • D21F7/08—Felts

Definitions

  • the invention relates to a fabric in a machine for producing a fibrous web, in particular a paper, board or tissue web, from a pulp suspension, wherein the machine comprises a wire section, a press section and a dryer section and wherein each stringing in the wire section, the press section and the drying section for guiding the fibrous web are present.
  • Known papermachine clothing are materials that are purely passive components of the paper machine; they can not provide information and interact with the machine in any way. This means that although the paper machine can be considered as an overall system, there is no feedback from the paper machine to the fabric and vice versa.
  • this object is achieved in a covering of the above mentioned type solved in that in the string at least one means for receiving and / or passing on data of the fabric or the environment of the fabric is present.
  • fabrics are used which actively communicate with and cause corresponding responses to the paper machine.
  • paper machine clothing created that are suitable for all types of use of clothing in the paper machine, so for example as wet sieves, press felts, conveyor belts or as fabrics in a single-row dryer section with drying cylinders and guide rollers.
  • microsensors and / or data loggers and / or microtransponders are embedded in the latter. H. These devices are introduced into the clothing in such a way that they are preferably protected on their upper and lower sides by a layer, for example a fabric layer, of the clothing.
  • the microsensors fulfill the active task of feedback of determined values from the possible measuring ranges mechanics, thermals, oscillations, electrics or acoustics or chemistry such as charge potentials, conductivity, pH value, ionic strength, ion content.
  • the embedded data loggers record data obtained, for example, from the microsensors, for example over long periods of time, thus allowing a recording of trends or profiles and controlling the control behavior of the paper machine.
  • the embedded transponder for example, perform a passive task with respect to pulses, which are passed through them to the paper machine. These are mainly counting as well as position pulses or condition reference quantities of the clothing.
  • microsensors and / or data loggers and / or microtransponders are thus integrated into a control loop of the machine and / or generate signal quantities for a controller in the control loop or for a plurality of control loops.
  • microsensors and / or the data logger and / or the microtransponder for example, arranged in the transverse direction or diagonally across the width of the fabric. Due to the diagonal arrangement of the sensors, a higher resolution of the obtained measured values can be achieved during fast processes.
  • the inventively used transponder for example, the number of revolutions of the fabric, the position of the fabric, in particular the delay and / or the length or width change, and / or the synchronization of drives within the machine or data for Pass on product identification.
  • the microsensors can be used to generate values for the pressure pulses, in particular from a press nip in the press section, in particular for setting the press nip, wear pulses, in particular as values of pressure or conductivity, temperature profiles, in particular in the dryer section, electric fields or charge potentials, force expansions, for example when adjusting the negative pressures or vacuums acting in the paper machine, or for contamination measurement, produce.
  • Transponders 2 are embedded in a covering 1 (FIG. 1) which are located in a row in the transverse direction, relative to the running direction of the fibrous web.
  • the transverse direction extends between the points A and B.
  • microsensors may also be embedded in the covering 1, for example in alternation with the transponders 2.
  • a transponder 3 (FIG. 2) is embedded in the clothing 1 in an edge area.
  • the transponders 2, 3 are embedded, in particular in the edge regions of the covering 1, in order to facilitate a quick product identification and the possibility of checking the storage during inventory on service on the paper machine.
  • the installation of two transponders in succession enables a fast measurement of the instantaneous speed at different positions in the paper machine and can be used as a trigger signal. This allows the local acceleration and deceleration of the paper machine clothing, For example, before driven rollers, vacuum boxes and presses and determine the strains occurring directly.
  • transponder 2, 3 at a certain position, for example at a seam, allows the use as a trigger signal, the observation and triggering or synchronization of certain processes, such as the generation of a jet of steam on the seam zone, microwave pulses, a special cleaning or chemical dosing.
  • Transponders 2, 3 can also be used for path control.
  • the transponders 2, 3 can also be integrated into the clothing in various other forms, in particular also in connection with data loggers and / or microsensors.
  • the microsensors relay the measurement signals they have received to the transponders, which then send them to receivers within the paper machine, which in turn can be integrated into control loops.

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Abstract

In the covering (1) a facility recovers and/or relays data concerning the covering itself, or its surroundings. One or more microsensors, data loggers and transponders (2, 3), especially microtransponders, are embedded. They are integrated into a control loop of the machine, and produce signals for a controller. They occupy the width, length or a diagonal of the covering. Transponders relay numbers of rotations, position, tension, width or length variations and/or drive synchronizations within the machine, or product identity data.

Description

Die Erfindung betrifft eine Bespannung in einer Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier-, Karton- oder Tissuebahn, aus einer Faserstoffsuspension, wobei die Maschine eine Siebpartie, eine Pressenpartie und eine Trockenpartie umfasst und wobei jeweils Bespannungen in der Siebpartie, der Pressenpartie und der Trockenpartie zur Führung der Faserstoffbahn vorhanden sind.The invention relates to a fabric in a machine for producing a fibrous web, in particular a paper, board or tissue web, from a pulp suspension, wherein the machine comprises a wire section, a press section and a dryer section and wherein each stringing in the wire section, the press section and the drying section for guiding the fibrous web are present.

Aus den US-Patenten 5 826 627 und 5 152 326 sind Bespannungen für Papiermaschinen mit Geweben bekannt, die aus mehreren Gewebelagen mit Schuss- und Kettfäden bestehen, wobei die Lagen durch einzelne Fäden miteinander verbunden sind. Dabei bestehen unterschiedliche Möglichkeiten zur Verbindung der Gewebelagen untereinander.US Pat. Nos. 5,826,627 and 5,152,326 disclose fabrics for paper machines comprising fabrics consisting of a plurality of fabric plies having weft and warp yarns, the plies being interconnected by individual yarns. There are different ways to connect the fabric layers with each other.

Bekannte Papiermaschinenbespannungen sind Materialien, die rein passive Bestandteile der Papiermaschine darstellen; sie können keine Informationen liefern und in keinerlei Wechselbeziehung zur Maschine treten. Dies bedeutet, dass, obwohl sich die Papiermaschine als Gesamtsystem betrachten lässt, keine Rückkopplung von der Papiermaschine an die Bespannung und umgekehrt gegeben ist.Known papermachine clothing are materials that are purely passive components of the paper machine; they can not provide information and interact with the machine in any way. This means that although the paper machine can be considered as an overall system, there is no feedback from the paper machine to the fabric and vice versa.

Es ist die Aufgabe, eine Bespannung zu schaffen, welche in der Lage ist, eine Rückkopplung zwischen der Papiermaschine, d. h. den übrigen Bestandteilen der Papiermaschine, und der Bespannung zu gewährleisten.It is the object to provide a fabric which is capable of providing feedback between the paper machine, d. H. the other components of the paper machine, and the covering to ensure.

Erfindungsgemäß wird diese Aufgabe bei einer Bespannung der eingangs genannten Art dadurch gelöst, dass in der Bespannung wenigstens ein Mittel zur Aufnahme und/oder zur Weitergabe von Daten der Bespannung oder der Umgebung der Bespannung vorhanden ist.According to the invention, this object is achieved in a covering of the above mentioned type solved in that in the string at least one means for receiving and / or passing on data of the fabric or the environment of the fabric is present.

Gemäß der Erfindung werden Bespannungen eingesetzt, die aktiv in Kommunikation mit der Papiermaschine treten und entsprechende Reaktionen auf dieser hervorrufen.According to the invention, fabrics are used which actively communicate with and cause corresponding responses to the paper machine.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen, der Beschreibung und den Zeichnungen enthalten.Advantageous developments of the invention are contained in the subclaims, the description and the drawings.

Es werden Papiermaschinenbespannungen geschaffen, die für alle Einsatzarten von Bespannungen in der Papiermaschine geeignet sind, also beispielsweise als Nasssiebe, Pressfilze, Transportbänder oder als Bespannungen in einer einreihigen Trockenpartie mit Trockenzylindern und Umlenkwalzen.There are paper machine clothing created that are suitable for all types of use of clothing in the paper machine, so for example as wet sieves, press felts, conveyor belts or as fabrics in a single-row dryer section with drying cylinders and guide rollers.

In Abhängigkeit vom geforderten "Intelligenzgrad" der Bespannung sind in dieser beispielsweise Mikrosensoren und/oder Datenlogger und/oder Mikrotransponder eingelassen, d. h. diese Geräte sind derart in die Bespannung eingebracht, dass sie vorzugsweise auf ihrer Ober- und ihrer Unterseite durch eine Schicht, beispielsweise eine Gewebelage, der Bespannung geschützt sind.Depending on the required "degree of intelligence" of the clothing, microsensors and / or data loggers and / or microtransponders, for example, are embedded in the latter. H. These devices are introduced into the clothing in such a way that they are preferably protected on their upper and lower sides by a layer, for example a fabric layer, of the clothing.

Die Mikrosensoren erfüllen die aktive Aufgabe der Rückmeldung von ermittelten Werten aus den möglichen Meßbereichen Mechanik, Thermik, Schwingungen, Elektrik oder Akustik oder Chemie wie bspw. Ladungspotentiale, Leitfähigkeit, pH-Wert, Ionenstärke, Ionengehalt.The microsensors fulfill the active task of feedback of determined values from the possible measuring ranges mechanics, thermals, oscillations, electrics or acoustics or chemistry such as charge potentials, conductivity, pH value, ionic strength, ion content.

Die eingelassenen Datenlogger nehmen Daten, die sie beispielsweise von den Mikrosensoren erhalten, auf, beispielsweise über längere Zeiträume, und erlauben so eine Aufzeichnung von Trends oder Profilen und kontrollieren das Regelverhalten der Papiermaschine.The embedded data loggers record data obtained, for example, from the microsensors, for example over long periods of time, thus allowing a recording of trends or profiles and controlling the control behavior of the paper machine.

Die eingelassenen Transponder erfüllen beispielsweise eine passive Aufgabe im Bezug auf Impulse, welche durch diese an die Papiermaschine weitergegeben werden. Dies sind vor allem Zähl- als auch Positionsimpulse oder Zustandsreferenzgrößen der Bespannung.The embedded transponder, for example, perform a passive task with respect to pulses, which are passed through them to the paper machine. These are mainly counting as well as position pulses or condition reference quantities of the clothing.

Durch die Einbindung der durch die Sensoren bzw. die Transponder gewonnenen Informationen in die Prozesse, insbesondere die Regelkreise, der Papiermaschine wird die Möglichkeit geschaffen, in der direkten Kommunikation mit derselben die Laufeigenschaften zu optimieren und den Wirkungsgrad zu erhöhen.By incorporating the information obtained by the sensors or transponders into the processes, in particular the control circuits, the paper machine, the possibility is created of optimizing the running properties in direct communication with the same and increasing the efficiency.

Über die Einbindung der Bespannung in die Regelung der Papiermaschine besteht die Möglichkeit, die Papiermaschine und die Bespannung als ein System zu betrachten und online die Laufeigenschaften zu optimieren.By integrating the clothing in the regulation of the paper machine, it is possible to view the paper machine and the clothing as a system and to optimize the running properties online.

Vorzugsweise sind somit Mikrosensoren und/oder Datenlogger und/oder Mikrotransponder in einen Regelkreis der Maschine integriert und/oder erzeugen Signalgrößen für einen Regler in dem Regelkreis oder für mehrere Regelkreise.Preferably, microsensors and / or data loggers and / or microtransponders are thus integrated into a control loop of the machine and / or generate signal quantities for a controller in the control loop or for a plurality of control loops.

Es bestehen verschiedene Möglichkeiten zur Anordnung der Mikrosensoren und/oder der Datenlogger und/oder der Mikrotransponder, beispielsweise in Querrichtung oder diagonal über die Breite der Bespannung angeordnet. Durch die diagonale Anordnung der Sensoren kann bei schnellen Prozessen eine höhere Auflösung der erhaltenen Messwerte erzielt werden.There are various possibilities for arranging the microsensors and / or the data logger and / or the microtransponder, for example, arranged in the transverse direction or diagonally across the width of the fabric. Due to the diagonal arrangement of the sensors, a higher resolution of the obtained measured values can be achieved during fast processes.

Es ergeben sich viele Einsatzmöglichkeiten für die erfindungsgemäß eingesetzten Transponder, die beispielsweise die Anzahl der Umläufe der Bespannung, die Position der Bespannung, insbesondere den Verzug und/oder die Längen- oder Breitenänderung, und/oder die Synchronisation von Antrieben innerhalb der Maschine oder Daten zur Produktidentifikation weitergeben.There are many possible uses for the inventively used transponder, for example, the number of revolutions of the fabric, the position of the fabric, in particular the delay and / or the length or width change, and / or the synchronization of drives within the machine or data for Pass on product identification.

Die Mikrosensoren lassen sich dafür verwenden, dass sie Werte für die Druckimpulse, insbesondere aus einem Pressnip in der Pressenpartie, insbesondere zur Einstellung des Pressnips, Verschleißimpulse, insbesondere als Werte des Drucks oder der Leitfähigkeit, Temperaturprofile, insbesondere in der Trockenpartie, elektrische Felder oder Ladungspotentiale, Kraft-Dehnungen, beispielsweise bei der Einstellung der in der Papiermaschine wirkenden Unterdrücke oder Vakua, oder zur Verschmutzungsmessung, erzeugen.The microsensors can be used to generate values for the pressure pulses, in particular from a press nip in the press section, in particular for setting the press nip, wear pulses, in particular as values of pressure or conductivity, temperature profiles, in particular in the dryer section, electric fields or charge potentials, force expansions, for example when adjusting the negative pressures or vacuums acting in the paper machine, or for contamination measurement, produce.

Nachstehend wird die Erfindung in einem Ausführungsbeispiel näher erläutert. Es zeigen:

Fig. 1
einen schematischen Längsschnitt eines Abschnitts einer Bespannung, in die Transponder eingebracht sind, und
Fig. 2
einen Querschnitt durch einen Randbereich der Bespannung mit einem darin eingebetteten Transponder.
The invention will be explained in more detail in an embodiment. Show it:
Fig. 1
a schematic longitudinal section of a portion of a fabric, are incorporated in the transponder, and
Fig. 2
a cross section through an edge region of the fabric with a transponder embedded therein.

In eine Bespannung 1 (Fig. 1) sind Transponder 2 eingebettet, die sich in einer Reihe in Querrichtung, bezogen auf die Laufrichtung der Faserstoffbahn, befinden. Die Querrichtung erstreckt sich zwischen den Punkten A und B. Zusätzlich können auch Mikrosensoren in der Bespannung 1 eingebettet sein, beispielsweise im Wechsel mit den Transpondern 2.Transponders 2 are embedded in a covering 1 (FIG. 1) which are located in a row in the transverse direction, relative to the running direction of the fibrous web. The transverse direction extends between the points A and B. In addition, microsensors may also be embedded in the covering 1, for example in alternation with the transponders 2.

Ein Transponder 3 (Fig. 2) ist in der Bespannung 1 in einem Randbereich eingebettet.A transponder 3 (FIG. 2) is embedded in the clothing 1 in an edge area.

Zur Produktidentifikation werden die Transponder 2, 3 insbesondere in den Randbereichen der Bespannung 1 eingebettet, um beim Service an der Papiermaschine eine schnelle Produktidentifikation und die Möglichkeit der Überprüfung der Lagerhaltung bei Inventur zu erleichtern.For product identification, the transponders 2, 3 are embedded, in particular in the edge regions of the covering 1, in order to facilitate a quick product identification and the possibility of checking the storage during inventory on service on the paper machine.

Der Einbau von zwei Transpondern hintereinander ermöglicht eine schnelle Messung der Momentangeschwindigkeit an verschiedenen Positionen in der Papiermaschine und kann als Triggersignal genutzt werden. So lassen sich die lokale Beschleunigung und Abbremsung der Papiermaschinenbespannung, beispielsweise vor angetriebenen Rollen, Vakuumkästen und Pressen und die dabei auftretenden Dehnungen direkt bestimmen und regeln.The installation of two transponders in succession enables a fast measurement of the instantaneous speed at different positions in the paper machine and can be used as a trigger signal. This allows the local acceleration and deceleration of the paper machine clothing, For example, before driven rollers, vacuum boxes and presses and determine the strains occurring directly.

Der Einbau eines Transponders 2, 3 an einer bestimmten Position, beispielsweise an einer Naht, erlaubt durch die Verwendung als Triggersignal die Beobachtung und Auslösung oder Synchronisation bestimmter Prozesse, beispielsweise das Erzeugen eines Dampfstoßes auf die Nahtzone, Mikrowellenimpulse, eine spezielle Reinigungen oder Chemikaliendosierung. Transponder 2, 3 können auch zur Bahnsteuerung verwendet werden.The installation of a transponder 2, 3 at a certain position, for example at a seam, allows the use as a trigger signal, the observation and triggering or synchronization of certain processes, such as the generation of a jet of steam on the seam zone, microwave pulses, a special cleaning or chemical dosing. Transponders 2, 3 can also be used for path control.

Es versteht sich, dass die Transponder 2, 3 auch in verschiedenen anderen Formen, insbesondere auch in Verbindung mit Datenloggern und/oder Mikrosensoren in die Bespannungen integriert werden können. Dabei leiten beispielsweise die Mikrosensoren die von ihnen aufgenommenen Messsignale an die Transponder weiter, die sie dann an Empfänger innerhalb der Papiermaschine versenden, die ihrerseits in Regelkreisen integriert sein können.It goes without saying that the transponders 2, 3 can also be integrated into the clothing in various other forms, in particular also in connection with data loggers and / or microsensors. In this case, for example, the microsensors relay the measurement signals they have received to the transponders, which then send them to receivers within the paper machine, which in turn can be integrated into control loops.

Durch die Messung bestimmter Daten, beispielsweise des Pressdrucks innerhalb eines Pressnips in der Pressenpartie, mittels eines in der Bespannung eingebetteten Sensors, lässt sich, beispielsweise unter Berücksichtigung eines von der Faserstoffbahn gewonnenen Wertes der Pressdruck verändern, um die Qualität der Faserstoffbahn zu beeinflussen.By measuring certain data, for example the pressing pressure within a press nip in the press section, by means of a sensor embedded in the covering, it is possible, for example taking into account a value obtained from the fibrous web, to change the pressing pressure in order to influence the quality of the fibrous web.

Claims (6)

Bespannung (1) in einer Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier-, Karton- oder Tissuebahn, aus einer Faserstoffsuspension, wobei die Maschine einen Siebpartie, eine Pressenpartie und eine Trockenpartie umfasst und wobei jeweils Bespannungen in der Siebpartie, der Pressenpartie und der Trockenpartie zur Führung der Faserstoffbahn vorhanden sind,
dadurch gekennzeichnet,
dass in der Bespannung (1) wenigstens ein Mittel zur Aufnahme und/oder zur Weitergabe von Daten der Bespannung oder der Umgebung der Bespannung vorhanden ist.Covering (1) in a machine for producing a fibrous web, in particular a paper, board or tissue web, from a pulp suspension, wherein the machine comprises a wire section, a press section and a dryer section and wherein in each case strings in the wire section, the press section and the Drying section for guiding the fibrous web are present,
characterized,
in that at least one means for receiving and / or passing on data of the clothing or the surroundings of the clothing is present in the clothing (1). Bespannung (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass in ihr Mikrosensoren und/oder Datenlogger und/oder Transponder (2, 3), insbesondere Mikrotransponder, eingelassen sind.Covering (1) according to claim 1,
characterized,
in that microsensors and / or data loggers and / or transponders (2, 3), in particular microtransponders, are embedded in it. Bespannung (1) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass das wenigstens eine Mittel in einen Regelkreis der Maschine integriert ist und Signalgrößen für einen Regler erzeugt.Fabric (1) according to claim 1 or 2,
characterized,
that the at least one means is integrated in a control loop of the machine and generates signal quantities for a controller. Bespannung (1) nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass die Mittel in Querrichtung oder diagonal über die Breite der Bespannung oder in Längsrichtung der Bespannung (1) angeordnet sind.Covering (1) according to one of claims 1 to 3,
characterized,
arranged that the center in the transverse direction, or diagonally across the width of the fabric or in the longitudinal direction of the string (1). Verwendung der Transponder (2, 3) nach Anspruch 2,
dadurch gekennzeichnet,
dass die Transponder (2, 3) die Anzahl der Umläufe der Bespannung, die Position der Bespannung (1), insbesondere den Verzug und/oder die Längen- oder Breitenänderung, und/oder die Synchronisation von Antrieben innerhalb der Maschine oder Daten zur Produktidentifikation weitergeben.Use of the transponder (2, 3) according to claim 2,
characterized,
that the transponder (2, 3) the number of revolutions of the covering, the position of the covering (1), in particular the delay and / or the length or width change, and / or the synchronization of drives within the machine or data sharing for product identification , Verwendung der Mikrosensoren nach Anspruch 2,
dadurch gekennzeichnet,
dass die Mikrosensoren Druckimpulse, insbesondere aus einem Pressnip in der Pressenpartie, insbesondere zur Einstellung des Pressnips, Verschleißimpulse, insbesondere als Werte des Drucks oder der Leitfähigkeit, Temperaturprofile, insbesondere in der Trockenpartie, elektrische Felder oder Ladungspotentiale, Kraft-Dehnungen, beispielsweise bei der Einstellung der in der Papiermaschine wirkenden Unterdrücke oder Vakua, oder zur Verschmutzungsmessung, erzeugen.Use of the microsensors according to claim 2,
characterized,
that the microsensors pressure pulses, in particular from a press nip in the press section, in particular for adjusting the press nips, wear pulses, in particular as values of pressure or conductivity, temperature profiles, especially in the dryer section, electric fields or charge potentials, force expansions, for example during adjustment produce the negative pressures or vacuums acting in the paper machine, or for contamination measurement.
EP05106909A 2004-09-17 2005-07-27 Fabric for machine for producing a fibrous web Withdrawn EP1637646A1 (en)

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DE102004045088A DE102004045088A1 (en) 2004-09-17 2004-09-17 Covering for a machine for producing a fibrous web

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