EP1348807A1 - Procédé d'exploitation d'une machine à papier et machine à papier - Google Patents

Procédé d'exploitation d'une machine à papier et machine à papier Download PDF

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Publication number
EP1348807A1
EP1348807A1 EP03100340A EP03100340A EP1348807A1 EP 1348807 A1 EP1348807 A1 EP 1348807A1 EP 03100340 A EP03100340 A EP 03100340A EP 03100340 A EP03100340 A EP 03100340A EP 1348807 A1 EP1348807 A1 EP 1348807A1
Authority
EP
European Patent Office
Prior art keywords
sound
roller
paper machine
sound measurement
machine according
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.)
Granted
Application number
EP03100340A
Other languages
German (de)
English (en)
Other versions
EP1348807B1 (fr
Inventor
Eva Scheideler
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 EP1348807A1 publication Critical patent/EP1348807A1/fr
Application granted granted Critical
Publication of EP1348807B1 publication Critical patent/EP1348807B1/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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0045—Paper-making control systems controlling the calendering or finishing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/0073—Accessories for calenders
    • D21G1/008—Vibration-preventing or -eliminating devices

Definitions

  • the invention relates to a method for operating a paper machine, in which Vibrations on at least one roller and / or on at least one formed between a roller and a counter surface, in particular counter roller Nip occur, be monitored. It also concerns a corresponding one Paper machine.
  • calenders For example in calenders, calenders, coating units, in particular Size presses, and / or the like it may be particularly related to the use of roller coverings lead to horizontal stripes on the paper web. As soon as these stripes become visible, the paper web is unusable and forms committee. This is known as the barring effect about the effects of vibrations.
  • the aim of the invention is to provide an improved method and an improved To create paper machine of the type mentioned, with which early detection the barring effect, ripples in the roll cover and / or the like Apparitions is possible, if necessary, in due time To be able to initiate countermeasures.
  • This object is achieved according to the invention by a method for operating a paper machine, in which vibrations occurring on at least one roller and / or on at least one between a roller and a counter surface, in particular counter roll, formed nip occur by a in the area of Roll or sound measurement carried out in the area of the nips are monitored.
  • Airborne sound measurement is carried out.
  • the sound measurement is advantageously carried out in the immediate vicinity of the roller or the nips.
  • the sound measurement can be carried out and / or analyzed repeatedly, a periodic sound measurement or analysis is preferably provided is. In principle, however, continuous sound measurement and / or - analysis possible.
  • it can be a respective sound level measurement or sound intensity measurement respectively.
  • the sound measurement is advantageously carried out by means of at least one sound sensor, in particular sound pressure sensor, in particular microphones.
  • a preferred practical embodiment of the method according to the invention is characterized in that a sound measurement value obtained or from it derived value is compared with a predeterminable upper limit value and If this limit value is exceeded, the limit value violation is signaled and / or control and / or regulation steps that are activated Counteract vibrations or reduce vibrations to a minimum.
  • the sound measurement in the area of at least one advantageously becomes one Barring effect tending roller or in the area of at least one to one such barring effect nips performed.
  • the sound measurement in particular in the area of at least one provided with a reference Roll and / or performed in the region of at least one elastic roller become.
  • the sound measurement can, for example, in the area of a calender, a smoothing unit, a size press, a guide roller and / or the like.
  • a respective sound measurement can, for example, in the area of the jacket respective roller, in the area of a roller bearing and / or in the area of a Roll face are carried out.
  • the vibrations detected in the manner described can be different Actuators or measures are counteracted.
  • Process is the vibrations in a corresponding roll offset Counteracted axial direction and / or in the machine direction.
  • Such Measure is particularly advantageous with a calender.
  • A preferably takes place Roll misalignment in machine direction.
  • the vibrations are controlled a corresponding control and / or regulation of the rigidity and / or the Damping an active roller bearing counteracted.
  • an active roller bearing can be used, as in DE 100 19 506 A1 is described.
  • a vibration Control and / or regulation of the roller and / or roller covering temperature counteract.
  • a corresponding one Control and / or regulation of the cooling water temperature or the cooling water effect be provided.
  • the vibrations can, for example via a corresponding control and / or regulation of the damping of the hydraulic system counteracted the inner support sources of the deflection adjustment roller become.
  • the vibrations can be controlled, for example, by a corresponding one Control and / or regulation of the color or glue temperature and / or the viscosity of the relevant dye or glue are counteracted.
  • the sound measurement values obtained are preferably a frequency analysis subjected.
  • a so-called Fast Fourrier transformation is used in question.
  • the sound measurement and / or the entire spectrum is measured or taken into account in the sound analysis.
  • the method is only used for sound measurement and / or sound analysis measured or considered at least one predeterminable frequency band.
  • the method is the sound measurement for at least one predeterminable frequency carried out and / or at least one obtained for a predeterminable frequency Sound measurement value compared with a predefinable upper limit.
  • the object specified at the outset is also achieved by a paper machine with a device for monitoring vibrations that at least a roller and / or at least one between a roller and one Counter surface, in particular counter roll, formed nip occur, the Monitoring device comprises a sound measuring device over which in the area a sound measurement can be carried out on the roller or in the area of the nip.
  • Figure 1 shows a schematic representation of a device 10 for monitoring of vibrations occurring on at least one roller and / or on at least one formed between a roller and a counter surface, in particular counter roller Nip can occur.
  • 1 shows, for example, a two rollers 12, 14 comprehensive, a nip 16 forming roller assembly shown, in particular can be provided in a paper machine.
  • the monitoring device 10 comprises at least one sound sensor 20, at which is particularly a sound pressure sensor, e.g. Microphone, act can.
  • a sound pressure sensor e.g. Microphone
  • the roller 12 is, for example, a barrier effect tilting roller.
  • the sound sensor 18 is in the immediate vicinity Arranged near the jacket 12 'of this roller 12.
  • the sound sensor 18 is part of, for example, in the monitoring device 10 integrated sound measuring device 20. In the present case, the sound measuring device 20 or the sound sensor 18 for airborne sound measurement.
  • the monitoring or sound measuring device 10, 20 can in particular do so be carried out so that the sound measurement and / or analysis can be carried out repeatedly is.
  • a periodic sound measurement or sound analysis is preferred intended. Sound measurement or sound analysis can, however, in principle also take place continuously.
  • the sound sensor 18 for example, the sound level and / or the Sound intensity can be measured.
  • the monitoring device 10 can in particular be a control and / or regulating device 22 include.
  • at least one control circuit or control circuit for active and / or passive Measures should be provided.
  • the monitoring system 10 including the control and / or regulating device 22 can in particular be designed such that a respective one received Sound measurement value or a value derived from it with a specifiable upper Limit value compared and if this limit value is exceeded the limit value is exceeded signals and / or control and / or regulation steps are activated, which counteract the vibrations or the vibrations reduce to a minimum.
  • the roller 12 can, for example, be provided with a covering and / or be formed by an elastic roller.
  • the sound measurement can take place, for example, in the area of a calender, a smoothing unit, a size press and / or the like. It can also be carried out on a guide roller, for example.
  • Figure 2 shows a schematic representation of a roller assembly with two Rollers 12, 14, between which a nip 16 is formed.
  • the sound sensor 18 is arranged in the region of a roller bearing 24.
  • the sound sensor 18 can e.g. in the immediate vicinity of a roller bearing 24 of the upper roller 12 may be provided.
  • the sound sensor 18 can in particular again be a sound pressure sensor, e.g. Microphone, act.
  • the monitoring device can, in particular, be configured again be as described in connection with FIG. 1.
  • FIG. 3 shows a schematic representation of, for example, four rollers 26-32 comprehensive roller arrangement.
  • a sound sensor is 18 in immediate vicinity of an end face 34 e.g. the second roller 28 arranged from above.
  • the sound sensor 18 can be, for example again a sound pressure sensor, e.g. Microphone, act.
  • a sound pressure sensor e.g. Microphone
  • the remaining exemplary embodiments are basically, for example, a sound level measurement or a sound intensity measurement is conceivable.
  • the monitoring device 10 can in particular be carried out again be as described in connection with FIG. 1.
  • Figure 4 shows a schematic representation of the conversion of a sound measurement signal 36 from the time domain (left part of FIG. 4) into the frequency domain (right part of FIG. 4) by means of a Fast Fourrier transformation (FFT).
  • FFT Fast Fourrier transformation
  • this sound measurement signal 36 in transmit the frequency range (cf. the right part of FIG. 4).
  • FFT Fast Fourrier Transform
  • the amplitudes obtained in the frequency range for the different frequencies v i are each compared with a predeterminable upper limit value 38 in order to be able to initiate active and / or passive measures if this limit value 38 is exceeded.
  • the limit value 38 is exceeded by the amplitudes at the frequencies v 1 and v 2 .
  • Exceeding the limit value 38 can, for example, be an indication that the rollers are becoming out of round. The relevant vibrations can then be counteracted, for example, by a corresponding roll offset.
EP03100340A 2002-03-27 2003-02-14 Procédé d'exploitation d'une machine à papier et machine à papier Expired - Lifetime EP1348807B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10213851A DE10213851A1 (de) 2002-03-27 2002-03-27 Verfahren zum Betreiben einer Papiermaschine sowie Papiermaschine
DE10213851 2002-03-27

Publications (2)

Publication Number Publication Date
EP1348807A1 true EP1348807A1 (fr) 2003-10-01
EP1348807B1 EP1348807B1 (fr) 2006-04-05

Family

ID=27798217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03100340A Expired - Lifetime EP1348807B1 (fr) 2002-03-27 2003-02-14 Procédé d'exploitation d'une machine à papier et machine à papier

Country Status (4)

Country Link
US (1) US6878237B2 (fr)
EP (1) EP1348807B1 (fr)
AT (1) ATE322574T1 (fr)
DE (2) DE10213851A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024129A1 (fr) * 2003-09-10 2005-03-17 Metso Paper Inc. Procede de commande, procede de reglage, agencement de commande et agencement de reglage de machines de bande de fibres

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10320031A1 (de) * 2003-05-06 2004-12-16 Samson Ag Verfahren und Vorrichtung zum Prüfen der Betriebssicherheit eines Prozessstellgeräts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0779394A1 (fr) * 1995-12-11 1997-06-18 Valmet Corporation Procédé et dispositif pour éviter les vibrations dans un ensemble de rouleaux
WO1999020836A1 (fr) * 1997-10-20 1999-04-29 Valmet Corporation Procede de detection de la contamination et/ou de l'endommagement d'une surface passant par la ligne de contact d'une machine a papier ou d'une machine de finissage du papier
WO2000009805A1 (fr) * 1998-08-14 2000-02-24 Metso Paper, Inc. Procede et dispositif permettant de modifier la periode propre de vibration d'un ensemble rouleaux pinceurs dans une machine a papier ou a carton
WO2001050030A1 (fr) * 2000-01-07 2001-07-12 Metso Paper, Inc. Amortissement

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Publication number Priority date Publication date Assignee Title
US60021A (en) * 1866-11-27 lenher
DE3205941C2 (de) * 1982-02-19 1986-10-30 Forschungsgesellschaft Druckmaschinen E.V., 6000 Frankfurt Vorrichtung zur berührungslosen meßtechnischen Erfassung des Flüssigkeitstransports durch Walzenspalte in Farb- oder Feuchtwerken von Druckmaschinen
JP2833156B2 (ja) * 1990-06-01 1998-12-09 石川島播磨重工業株式会社 音圧によるドライヤ故障診断装置
US5083976A (en) * 1990-10-26 1992-01-28 Ford New Holland, Inc. Adjustment of a shear bar using an air-borne sound detector
FI108635B (fi) * 1997-06-30 2002-02-28 Metso Paper Inc Menetelmä rullanmuodostuksen laadun määrittämiseksi ja rullanmuodostuksen ohjaamiseksi
CA2279609C (fr) * 1998-08-06 2007-05-01 Voith Sulzer Papiertechnik Patent Gmbh Dispositif pour affaiblir activement d'indesirables vibrations dans des rouleaux rotatifs; dispositif pour traiter une bande de materiau; particulierement une bande de papier ou de carton
FI105232B (fi) * 1999-04-23 2000-06-30 Valmet Corp Paperi-/kartonki- tai jälkikäsittelykoneen hydrostaattisesti laakeroitu tela
KR100543820B1 (ko) * 1999-05-27 2006-01-23 제이에프이 스틸 가부시키가이샤 냉간 압연기의 채터링 검지방법 및 장치
DE10008800B4 (de) 2000-02-25 2005-10-27 Voith Paper Patent Gmbh Verfahren zum Betrieb einer Kalanderwalze und Kalanderwalze
US6910376B2 (en) * 2001-02-22 2005-06-28 Metso Paper, Inc. Measurement method and system in the manufacture of paper or paperboard
US6750621B2 (en) * 2001-09-10 2004-06-15 Sauer-Danfoss Inc. Method and system for non-contact sensing of motion of a roller drum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0779394A1 (fr) * 1995-12-11 1997-06-18 Valmet Corporation Procédé et dispositif pour éviter les vibrations dans un ensemble de rouleaux
WO1999020836A1 (fr) * 1997-10-20 1999-04-29 Valmet Corporation Procede de detection de la contamination et/ou de l'endommagement d'une surface passant par la ligne de contact d'une machine a papier ou d'une machine de finissage du papier
WO2000009805A1 (fr) * 1998-08-14 2000-02-24 Metso Paper, Inc. Procede et dispositif permettant de modifier la periode propre de vibration d'un ensemble rouleaux pinceurs dans une machine a papier ou a carton
WO2001050030A1 (fr) * 2000-01-07 2001-07-12 Metso Paper, Inc. Amortissement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEN Y N ET AL: "Calender barring on paper machines-practical conclusions and recommendations", TAPPI, TECHNICAL ASSOCIATION OF THE PULP & PAPER INDUSTRY. ATLANTA, US, vol. 58, no. 8, August 1975 (1975-08-01), pages 147 - 151, XP002216957 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024129A1 (fr) * 2003-09-10 2005-03-17 Metso Paper Inc. Procede de commande, procede de reglage, agencement de commande et agencement de reglage de machines de bande de fibres
CN1701151B (zh) * 2003-09-10 2012-04-25 美卓造纸机械公司 丝网机的控制方法和调整方法以及控制装置和调整装置

Also Published As

Publication number Publication date
EP1348807B1 (fr) 2006-04-05
US20030188583A1 (en) 2003-10-09
DE10213851A1 (de) 2003-10-09
US6878237B2 (en) 2005-04-12
DE50302856D1 (de) 2006-05-18
ATE322574T1 (de) 2006-04-15

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