WO2008096036A1 - Rouleau de mesure de machine a nappe fibreuse et procede de recouvrement dudit rouleau - Google Patents

Rouleau de mesure de machine a nappe fibreuse et procede de recouvrement dudit rouleau Download PDF

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Publication number
WO2008096036A1
WO2008096036A1 PCT/FI2008/050003 FI2008050003W WO2008096036A1 WO 2008096036 A1 WO2008096036 A1 WO 2008096036A1 FI 2008050003 W FI2008050003 W FI 2008050003W WO 2008096036 A1 WO2008096036 A1 WO 2008096036A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring roll
strip
sensor
roll
fibrous
Prior art date
Application number
PCT/FI2008/050003
Other languages
English (en)
Inventor
Petteri Lannes
Tatu PITKÄNEN
Marko Tiilikainen
Teppo Kojo
Petri Enwald
Pekka Kivioja
Jan Paasonen
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Priority to DE112008000330T priority Critical patent/DE112008000330T5/de
Publication of WO2008096036A1 publication Critical patent/WO2008096036A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G01L5/045—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands for measuring the tension across the width of a band-shaped flexible member
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/06—Means for regulating the pressure
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/08—Pressure rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/004—Regulating the pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0061—Force sensors associated with industrial machines or actuators
    • G01L5/0076—Force sensors associated with manufacturing machines
    • G01L5/0085—Force sensors adapted for insertion between cooperating machine elements, e.g. for measuring the nip force between rollers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands

Definitions

  • the invention relates to a measuring roll of a fibrous-web machine according to the preamble of claim 1.
  • the invention also relates to a method for covering a measuring roll of a fibrous- web machine according to the preamble of claim 10.
  • FI specification 20055020 describes a method for measuring nip pressure and/or pressure profile.
  • a nip- forming roll is fitted with a pressure sensor under a cover layer which is protective and functions on top of the sensor, and the nip pressure delivers to the lower surface of the cover a deformation proportional to the nip pressure and the deformation compresses the sensor which responds to the deformation by generating an electric signal.
  • the specification also describes a roll for measuring nip pressure and/or pressure profile, which roll is provided with a pressure sensor which is located under a cover layer which is protective and which layer functions as a spring and in which at least one cover layer is composed of a cold-curing polymer or composite.
  • the senor is protected by a cold-curing polymer cover and, on top of the sensor, there is one or more cover layers, when using two cover layers, the lowest one is provided with a groove for the sensor, whereby the first layer can be hot-curing as well.
  • the specification describes an arrangement in which the lower cover, which is provided with the groove for the sensor, is of a relatively hard material or of a material having the same flexibility as the sensor itself.
  • FI specification 20055019 which describes a method for measuring a cross-directional tension profile of the web using at least one pressure-sensitive strip sensor placed spirally inclined into connection with the roll surface for measuring a force caused by the web, in which the active area or areas of the film functioning as the measuring sensor visit over the course of each revolution of the roll substantially completely under an overlap zone and in a substantially completely open space.
  • a roll for measuring a tension profile in which a spiral-like inclined pressure sensor strip is installed on the roll surface which makes contact with the web obliquely and which has co-directionally with the web a measuring range which is substantially equal to or shorter than the overlap angle of the web when the roll is used for measuring the cross-directional tension profile of the web.
  • the specification depicts arrangements in which the sensor is under a protective layer, in which the sensor is installed in a protective groove or on the roll surface without a protective groove.
  • a ceramic resin composite cover is mentioned.
  • doctoring prevents the wrapping of the web around the roll in a web break situation and the dirtying of the roll surface.
  • the doctoring can be implemented mechanically by a doctor blade trailing the roll surface or by a contact-free air-blow doctor.
  • the soft cover typically used in prior-art measuring rolls cannot be mechanically doctored and, on the other hand, when using the measuring roll in certain fibrous-web machine positions and/or when manufacturing certain fibrous- web types, such as tissue papers and boards, the surface of the measuring roll has to be mechanically doctorable in order to keep the roll surface clean and due to the fact that air doctoring is not always effective enough and/or it causes a noise nuisance.
  • the object of the invention is to eliminate or at least minimise the disadvantages and problems of the above-described arrangements according to prior art.
  • An object of the invention is thus to provide a measuring roll of a fibrous-web machine the surface of which is mechanically doctorable.
  • the measuring roll according to the invention is mainly characterised by what is presented in the characterising part of claim 1.
  • the method for covering the measuring roll of the fibrous- web machine according to the invention is principally characterised by what is presented in the characterising part of claim 10.
  • a measuring roll of a fibrous-web machine advantageously a measuring roll of a winder, which when required endures mechanical doctoring because it is covered with a hard metal strip i.e. G strip.
  • a hard metal strip i.e. G strip.
  • to prevent the damaging of the sensor during the G strip covering it has been realised to protect the sensor located in a groove on the roll surface during covering by a filler/transmitting material which in the completed roll enables the functionality of measuring, the filler/transmitting material transmitting the pressure/force exerted in the measurement to the sensor.
  • the filler/transmitting material is advantageously during the G strip covering a liquid, non-curing material, such as two-component resin or other equivalent two-component substance, polyurethane mass, suitable silicone-based material or rubber, e.g. an on-glueable precise rubber strip.
  • the filler/transmitting material can then be formed of a first component located on top of the sensor and a second component entered in connection with the covering which activates curing.
  • the ends of the sensor groove are provided with an end strip or the like which prevents the filler/transmitting material from extruding out during the G strip covering.
  • the temperature endurance of the filler/transmitting material is at least of the range of 80/100°C.
  • the G strip covering is performed e.g. in a way described in US patent specification 4748736.
  • the G strip is formed a desired surface, smooth or grooved, in the measuring roll which surface is the outer surface or the intermediate surface of the measuring roll, the measuring roll comprising still one or more cover layers installed on top of and/or under the G strip cover.
  • the measuring roll of the fibrous-web machine comprises a pressure/force-sensitive sensor installed in a machined groove on the surface of the roll shell, whereby the sensor will not be damaged when installing the tight G cover strip.
  • the measuring roll also comprises a hard metal strip surface, advantageously a G strip surface, in connection with the installation of which advantageously on top of the sensor in the groove there is a liquid or gelatinous, at this stage still non-curing filler/transmitting material.
  • the strip sinks due to tension slightly into the groove displacing the liquid filler/transmitting material from the groove.
  • the measuring roll of the fibrous-web machine comprises at least one cover coming on top of and/or under the G strip cover.
  • the sensor of the measuring roll according to the invention is advantageously a pressure/force-sensitive measuring sensor, most suitably a pressure/force-sensitive film or strip sensor, e.g. a so-called EMFi (Electro-Mechanical Film) film sensor, whereby by means of the measuring film can be measured e.g. nip load and the cross-profile of nip force easily and accurately.
  • EMFi Electro-Mechanical Film
  • the measuring roll according to the invention is advantageously applied in connection with the winders of fibrous webs, especially paper webs, but it can also be applied e.g. as a measuring roll used in presses and surface-sizing units.
  • windups used in connection with fibrous-web machines such as paper and board machines
  • a fibrous web being manufactured by which fibrous-web machines, such as a paper machine/board machine, is wound as a full-width web into machine reels for further processing.
  • the web is wound around a winding shaft e.g. a spool iron/roll either by means of surface draw in a winding nip between a winding drum and a web reel being formed or by utilising a centre drive, whereby also the winding shaft is provided with a drive.
  • a winding shaft e.g. a spool iron/roll either by means of surface draw in a winding nip between a winding drum and a web reel being formed or by utilising a centre drive, whereby also the winding shaft is provided with a drive.
  • unwinders In connection with fibrous-web machines, such as paper and board machines, are also used unwinders by means of which the web reel wound by the windup is unwound
  • the measuring roll it is possible e.g. to measure a nip force profile when the measuring roll forms a nip with another roll/web reel, whereby measurement is performed by the measuring film sensor installed on the surface of the roll shell of the measuring roll.
  • Figs. 1 A-IB schematically show an embodiment of the invention.
  • Figs. 2A— 2B schematically show the covering of the roll with a G strip.
  • a sensor 11 in a groove 14 made on the surface of the roll shell of a measuring roll 10 of a fibrous-web machine is set a sensor 11, most suitably a pressure/force-sensitive film sensor.
  • a filler/transmitting material 12 On top of the sensor 11 in the groove 14 is installed a filler/transmitting material 12.
  • the measuring roll 10 is covered with a G strip 13.
  • the measuring roll of the fibrous-web machine comprises thus the pressure/force- sensitive sensor 11 installed in the machined groove 14 on the surface of the roll shell, whereby the sensor 11 will not be damaged when installing the hard G cover strip 13.
  • Figs. 2A-2B show an exemplifying embodiment of the installation of the G strip cover 13 for the cover of the roll 10.
  • the G strip 13 is reeled around the roll as a tight band which is welded fast from its ends. During the reeling, the G strip 13 is tensioned tight (tension) over the flow limit, whereby the strip 13 forms a cover layer compressing (pressure) the surface of the roll 10.
  • the G strip covering utilises the G strip technique known as such which has been described e.g. in FI patent specification 81183 and US patent specification 4748736.
  • the sensor 11 of the measuring roll 10 is set in the groove 14 made on the surface of the roll, whereby it will not be damaged during the reeling of the strip 13. Furthermore, on top of the sensor 11 in the groove 14 is set the filler/transmitting material 12 which further protects the sensor 11 and also ensures in the measurement the transmission of the force/pressure to the sensor 11.
  • Fig. 2B shows a partial enlargement of Fig. 2A and there an example of the G strip becomes clear.
  • the G strip is used a material of spring steel type which is thin.
  • the measuring roll 10 possibly still comprising one or more cover layers installed on top of and/or under the G strip cover 13.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Coating Apparatus (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un rouleau de mesure de machine à nappe fibreuse (10) sur la surface duquel est formée une rainure (14) dans laquelle est disposé un capteur (11). Ce rouleau de mesure (10) comprend un revêtement à bande G (13). L'invention concerne également un procédé de recouvrement de rouleau de mesure de machine à nappe fibreuse (10) mettant en œuvre un capteur (11) placé dans une rainure formée sur la surface de la coque du rouleau de mesure (10). Dans ce procédé, le rouleau de mesure (10) est recouvert au moyen de la technique à bande G.
PCT/FI2008/050003 2007-02-05 2008-01-08 Rouleau de mesure de machine a nappe fibreuse et procede de recouvrement dudit rouleau WO2008096036A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008000330T DE112008000330T5 (de) 2007-02-05 2008-01-08 Messwalze für eine Faserbahnmaschine und Verfahren zum Abdecken der Messwalze der Faserbahnmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20075074 2007-02-05
FI20075074A FI118928B (fi) 2007-02-05 2007-02-05 Kuiturainakoneen mittaustela ja menetelmä kuiturainakoneen mittaustelan pinnoittamiseksi

Publications (1)

Publication Number Publication Date
WO2008096036A1 true WO2008096036A1 (fr) 2008-08-14

Family

ID=37832228

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/050003 WO2008096036A1 (fr) 2007-02-05 2008-01-08 Rouleau de mesure de machine a nappe fibreuse et procede de recouvrement dudit rouleau

Country Status (3)

Country Link
DE (1) DE112008000330T5 (fr)
FI (1) FI118928B (fr)
WO (1) WO2008096036A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019001354A1 (de) * 2019-02-26 2020-08-27 VDEh- Betriebsforschungsinsititut GmbH Messrolle zum Feststellen einer Eigenschaft eines über die Messrolle geführten bandförmigen Guts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6471626B1 (en) * 1999-06-02 2002-10-29 Voith Sulzer Papiertechnik Patent Gmbh Resilient roll for smoothing webs
WO2005113891A1 (fr) * 2004-05-14 2005-12-01 Stowe Woodward, Llc. Rouleau industriel a capteurs piezo-electriques de pression
EP1653207A2 (fr) * 2004-10-29 2006-05-03 Stowe Woodward Aktiengesellschaft Couvertures de rouleaux avec des capteurs sans fil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI853544L (fi) 1985-09-16 1987-03-17 Valmet Oy Pressvals och foerfarande foer framstaellning av denna.
FI81183C (fi) 1988-02-09 1990-09-10 Valmet Paper Machinery Inc Vals och foerfarande foer framstaellning av denna.
FI20055019A (fi) 2005-01-17 2006-07-18 Metso Paper Inc Rainan kireysprofiilin mittausmenetelmä ja sitä soveltava tela
FI20055020A (fi) 2005-01-17 2006-07-18 Metso Paper Inc Paineprofiilin ON-linemittaus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6471626B1 (en) * 1999-06-02 2002-10-29 Voith Sulzer Papiertechnik Patent Gmbh Resilient roll for smoothing webs
WO2005113891A1 (fr) * 2004-05-14 2005-12-01 Stowe Woodward, Llc. Rouleau industriel a capteurs piezo-electriques de pression
EP1653207A2 (fr) * 2004-10-29 2006-05-03 Stowe Woodward Aktiengesellschaft Couvertures de rouleaux avec des capteurs sans fil

Also Published As

Publication number Publication date
DE112008000330T5 (de) 2009-12-17
FI20075074A0 (fi) 2007-02-05
FI118928B (fi) 2008-05-15

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