EP0963481B1 - Verfahren zur auslegung und/oder visualisierung von mindestens einer walzen/filz-paarung in der nasspresse einer papier- oder kartonmaschine - Google Patents
Verfahren zur auslegung und/oder visualisierung von mindestens einer walzen/filz-paarung in der nasspresse einer papier- oder kartonmaschine Download PDFInfo
- Publication number
- EP0963481B1 EP0963481B1 EP97907059A EP97907059A EP0963481B1 EP 0963481 B1 EP0963481 B1 EP 0963481B1 EP 97907059 A EP97907059 A EP 97907059A EP 97907059 A EP97907059 A EP 97907059A EP 0963481 B1 EP0963481 B1 EP 0963481B1
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- EP
- European Patent Office
- Prior art keywords
- felt
- press
- parameters
- roll
- machine
- 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.)
- Expired - Lifetime
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000011111 cardboard Substances 0.000 claims abstract description 9
- 239000011087 paperboard Substances 0.000 claims abstract description 9
- 239000000123 paper Substances 0.000 claims description 34
- 238000004458 analytical method Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000004364 calculation method Methods 0.000 claims description 22
- 230000008859 change Effects 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 description 11
- 230000003993 interaction Effects 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000034 Plastomer Polymers 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
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- 238000010230 functional analysis Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Images
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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S715/00—Data processing: presentation processing of document, operator interface processing, and screen saver display processing
- Y10S715/961—Operator interface with visual structure or function dictated by intended use
Definitions
- the invention relates to a method for design and / or Visualization of at least one roller / felt pairing in the Wet press of a paper or board machine.
- DE 38 35 641 A1 discloses a method for controlling and / or monitoring the drying process of a paper or cardboard web.
- the air distribution system of a so-called Yankee cylinder is divided into three, with a computer being used to control the drying process.
- the control and monitoring of the Yankee cylinder drying process is based on an online simulation program, which aims to achieve better paper quality and more effective drying in terms of both energy consumption and the actual drying process.
- a process model is used for this, which was set up on the basis of test runs, online measurements and / or drying theory.
- Setpoint parameters corresponding to the types of railway to be traveled are entered into the process model from a so-called sort or recipe file, the simulation program being provided with new output values in certain time segments, which are provided by sensors of the drying process.
- the known simulation program thus calculates the dry content as well as the temperature of the paper and the energy consumption of the individual drying segments from the initial data, eg evaporation performance for the web to be dried from each segment.
- the speed, the humidity and the temperature of the blowing air can be determined.
- paper machines with dewatering elements which comprise wet press felts, dryer fabrics and rollers.
- the paper or cardboard web is deliberately dewatered by means of so-called wet pressing, the respective machine clothing being decisive with regard to the quality of the products obtained, the smooth running of the press and the service life of the felts.
- the behavior of the clothing in the press depends on the defined roller configuration, which in turn interacts with the felt material.
- the interactions and influencing parameters of roller / felt pairings in wet presses are extraordinarily complex, with contamination of the felt during operation resulting in undesirable and unpredictable quality changes or undesirable restrictions in productivity when operating the paper machines.
- Previously known design methods for the creation of an optimal pair of rollers and felt rely on sometimes complex test runs and on-site variant tests necessary for the customer, which are, however, very time-consuming and cost-intensive.
- the method according to the invention it should be possible to: make application technology decisions in less time, where directly on site, e.g. in customer advice or on existing systems, applications can be predicted, visualized and tested.
- an analysis should additionally occur Problems quickly and inexpensively be feasible.
- a lot is offered from a lot Press configurations the current or to be interpreted Configuration to be visualized selected, using as a selection criterion additionally the respective application and the desired paper or cardboard quality can be used.
- a press ie a roll / felt pairing, is then selected within the selected press configuration, relevant output machine and roll parameters of the selected press being read and displayed in the internal database.
- relevant output machine and roll parameters of the selected press being read and displayed in the internal database.
- Dewatering behavior of the selected press can be a targeted change of machine and / or Roll parameters of the selected press can be made.
- relevant felt parameters that can be assigned are already read out from or into the standard database by reading out or re-entering machine and roller parameters. This reading of felt parameters or the calculation of sizes that characterize the drainage behavior takes place in the background. By means of this background calculation, it is possible to minimize the amount of image data required for visualization on the one hand and on the other hand to have the link between the properties of roller and felt, ie the specific roller and felt pairing, necessary in time for the results display. Due to the quasi-parallel felt and roller analysis, but separate presentation of the respective analysis results, taking into account the sizes necessary for the interaction of the pairing, the otherwise hardly manageable behavior of the wet press can be represented more easily. In particular, countermeasures can be more easily recognized for the control and monitoring tasks due to the clear presentation after triggering an alarm when limit conditions of the drainage process are reached, in order to initiate the correct measures as quickly as possible for eliminating a hydraulic overload of the system.
- a continuous change and specification of machine, roller and / or roller / felt parameters takes place automatically with the aim that a roller / felt pairing and / or a felt fleece structure can be specified for a specific press configuration , which is identified by a predetermined, maximum drainage capacity.
- a calculation cycle is initiated on the input side, with the computer system automatically performing the design procedure up to reaching limit values or limit loads and displaying the results obtained.
- the method described is used for further presses repeated press configuration, whereby from the Standard database system proposal data for the others Presses are read.
- Essential machine parameters as well material parameters determining the paper or board quality remain as superordinate influencing parameters and are adopted until a new press configuration is selected.
- Standard database contains for all press configurations linked preset data, which is, however, or design process related to the roll / felt pairing are changeable. It is within the meaning of the invention that starting from new machine, fabric, roller and / or Felt parameters obtained by calculation values for the each pairing are characteristic as new standard data can be saved and added to the standard database can be. The creation of new standard data can be done by an updating in the sense of performing self-learning steps will be realized.
- roller and felt analysis can be arbitrary on the display side be changed, with the original input values of respective press remain.
- a targeted change the material or machine parameters can be derived from the roller as well as from the felt analysis, i.e. after calling the respective submenus.
- the system begins with: a system proposal for the new rollers / felt pairing, with essential machine and Substance parameters are adopted. These parameters, in particular the machine speed, paper quality, fabric temperature as well as other substance parameters remain for everyone Pressing the configuration received until a modification this superordinate influencing parameter is carried out.
- the process is particularly easy determine what effects the final dry matter content of the paper or cardboard, an increase in fabric temperature, one Line load change, a machine speed, material input or change in grind. Likewise, an instant one Visualization of the effects of an increase in speed, e.g. based on the loss of dry matter possible.
- Another advantage of the method lies in the process-related Simulate the behavior of the roller / felt pairing, in particular considering the long-term behavior of the felt the contamination of the surface of the felt, so that the Period of maximum felt performance and the time of Maintenance work can then be determined before a Deterioration in quality, e.g. crumpled paper, the result is.
- a subset of boundary conditions to be displayed at Drainage process can be selected.
- boundary conditions are in particular a maximum press pressure, which is characterized by the properties of, for example, elastomeric roll covers results in a negative water balance or a too high flow resistance in the felt, which leads to hydraulic overload due to vibrations, short felt run times and felt tears can lead.
- the paper quality in the respective press image the default setting is specified.
- the respective press image field is the type of press specified, for example Trinip, Tvinver, Trivent, compact, tissue, shoe and lay presses listed become.
- the respective description field enables opening by clicking on the menu in question, e.g. With a computer mouse. You can also from the main menu both language and the measurement system to be used become.
- the specific menu is then selected via the main menu Press configuration, e.g. Trinip, with an additional one next step select the respective press and the Direction of travel can be selected.
- main menu Press configuration e.g. Trinip
- the first press will Program called for a newsprint paper machine, and the first press of a Trinip press configuration with all relevant parameters using a standard database displayed. Relevant parameters concern the rolls that used felts, the material input and so on.
- a worksheet for roll analysis results which, in addition to relevant customer information, includes an internal designation, in the specific case "paper machine 1, first press".
- the upper right menu picture shows the material parameters, ie the properties of the pulp, with the abbreviations AP for waste paper and TMP for thermo-mechanical pulp.
- the specification of the fillers relates to the use of kaolin, CaO, CaCO 3 or similar.
- the quantities specified in the machine parameters field include a paper machine speed in m / min as an analog pointer display with digital numerical display, the line load (LL) being shown in kN / m using a bar chart with a movable pointer.
- the paper hand speed uses the analog pointer display, which is supplemented by the digital numerical display mentioned.
- the situation is similar with the machine parameter line load, which is represented both digitally and by a bar with pointer.
- the paper quality in the example shown "Newsprint”, the paper weight in g / m 2 , the input dry matter content in% and the fabric temperature, ie the temperature of the fiber-water mixture at the press inlet, are also shown.
- the roll parameters include the reference length in meters, the Number of nips and column-like information on the Top and bottom roller. With double suction press rolls of 2 nips went out.
- the reference length corresponds essentially to the roll length, DM being the diameter of the roll, including the reference thickness. Grooves and webs, as well as depth and blind bore diameter, as well as the open blind bore area, are decisive for the water transport capacity and are therefore specified. In addition, a percentage of the open area of the suction holes is given, whereby the program calculates the sum of the open area per roller and the H 2 O (water) storage volume per roller.
- the storage volume is specified in milliliters per square meter.
- the size "Trg.A (%)" denotes the calculated outlet dry content.
- H 2 O made of paper denotes the amount of water squeezed out of the paper or the paper web.
- Ges.H 2 O in milliliters per square meter indicates the total amount of water and
- Ges.Spv in milliliters per square meter indicates the total storage volume of rollers and felts in the pressed state.
- the “H 2 O difference” indicates the difference between the storage volume and the total amount of water, the display changing to flashing in the event of a negative total water balance, so that the exceeding of a limit condition can be easily identified.
- the results from gap width to Press pulse characterize standard calculation results for press rolls and provide comparison parameters for the possible Use of modified rollers.
- the displayed temperature development the roller represents a measure of the thermal energy which for example due to internal friction during deformation and flexing the roller is released.
- the indication of the amount of coolant l / min is based on the thermal energy to be dissipated and takes into account the desired homogeneous temperature curve over the roll length.
- connecting lines shown in FIGS. 2 to 8 the influences or interactions between the machine and material parameters on the one hand and the results with of the respective roller can be obtained, shown on the other hand become. These connecting lines are for illustration only, i.e. they are on the monitor of the computer system not shown.
- the arrow representations also indicate the direction of change of the respective parameter or the respective result.
- the outlet dry content is reduced, ie the amount of water squeezed out of the paper and thus both the total storage volume and the total amount of water as well as the H 2 O difference become smaller.
- An increase in the machine speed ie an increase in speed, also leads to increasing flexing work in the roller, which in turn leads to an increase in temperature.
- FIG. 3 shows the influence of increased line load on the results roller analysis
- Fig. 4 shows the effects of a changed Paper weight, changed input dry matter content as well as changed fabric temperature.
- the effects of Pulp parameters on the drainage capacity is in the Fig. 5 shown.
- Fig. 6 is used for the symbolic explanation changed hardness of the roll cover or the influence of a changing reference thickness of the roller. The same applies to the 7 and 8, the latter clarifying to what extent the Drainage capacity through constructive measures at the Formation of water-absorbing grooves, webs and blind holes can vary.
- A can now be entered in the program or menu item for the roller analysis Changing machine and / or roller parameters of the selected Press, which is due to the Parameter changes changed drainage behavior of the Roll / felt pairing of the press continuously recalculated and how explained at least partially as a trend display becomes.
- the result may represent through simultaneous availability of the calculation results can be switched between roller and felt analysis, with fields for renewed presentation in each result Change and specification of machine and roller parameters or machine and felt parameters are provided.
- All machine and roller parameters can be changed, again using a mouse directly on the respective parameter fields can be accessed and for example the pointer or the bar for machine speed or line load towards higher or lower Values.
- the information is of course also new parameters by entering a specific sequence of digits possible.
- a particular advantage of the method described is in that both felt and roller changes are complete can be simulated in a process-oriented manner, with the adoption of Machine and fabric parameters for a specific press configuration the indication of expected, i.e. simulated Results can be done extremely quickly, so that Procedures also for direct control and monitoring a paper machine can be used.
- roller and felt analysis run in the background together, i.e. at the same time, with results obtained in can be saved in the database under corresponding global variables are.
- results obtained in can be saved in the database under corresponding global variables are.
- a corresponding worksheet for felt or roller analysis shown although also a common Presentation of particularly typical values is conceivable.
- the calculated results are preferred on a monitor of the computer system in different graphic and / or shown in color, the product-related Results in a first matching form, e.g. With red bar, the water-related results in a second matching shape, e.g. with blue bars, and the changeable ones Input parameters in a third matching Shape, e.g. black text on white fields become.
- a first matching form e.g. With red bar
- the water-related results in a second matching shape e.g. with blue bars
- the changeable ones Input parameters in a third matching Shape e.g. black text on white fields become.
- FIGS. 9 to 16 their linking parameters and influencing effects (connecting lines and arrow representations) completed felt analysis to be discribed.
- the Scanpro values are measured values, for example with a so-called Scanpro press tuner can be obtained.
- the information felt g / m 2 refers to the calculated total weight of the felt and the information GG g / m 2 to the calculated basic fabric weight.
- the number of needles corresponds to the respective standard setting of the given system, denier denoting the fiber mixtures. For example, “% 1.Fa” is the percentage of the first fiber.
- “Lag” refers to the number of nonwoven layers per mixture and "G / Lag” the weight per layer of a mixture.
- RS vacuum relates to the measured pipe suction vacuum value at Start-up of the paper machine.
- Days is the expected calculated duration of the felt verified in days. This calculated runtime result lies in the respective result blocks before or is displayed there.
- the felt quotient results from the measured value Scanpro per total felt weight.
- H20 Vol.neu corresponds to the storage volume of the new base fabric under a given line load, with “H20-running days” indicating the storage volume of the base fabric over the course of the runtime.
- Period in l / m 2 * min relates to the water permeability of the press felt, which changes over the running time.
- the flow resistance of the press felt is also time-dependent and increases, for example, through contamination of the felt.
- the flow resistance one of the boundary conditions in the drainage process represents.
- the flow resistance in the felt depends from the fiber layering, the pre-compacting process, the fleece layer, the storage volume of the basic tissue weight, the storage volume the press roll in the course of the flow paths, the hydraulic pressure and the amount of water in the felt. results a situation where a short nip dwell time is no longer sufficient for the amount of water in the felt through the fleece to drain or is through the roller construction through long flow paths and insufficient storage volume of the hydraulic Pressure in the press nip is too high, then the roller / felt pairing or the entire wet press system is hydraulically overloaded.
- the drainage measures both by means of pipe suction as well the nip drainage are used in addition to the actual removal of Moisture also when cleaning the felt or the Removal of dirt particles, so that the service life elevated.
- FIG. 9 shows the felt analysis according to FIG drawn connection lines the connections with themselves changing machine speed in relation to the drainage capacity and certain calculation results of the Felt.
- Fig. 10 shows the interactions between increased Line load and felt analysis calculation results as well as the Drainage capacity.
- the method therefore makes it possible for felt types very different types of both basic tissue weight as well
- it's easy to get one Water balance calculation, here on the influence of nip dwell time and maximum pressure on the press felt can be received.
- a comparison possibility of flow resistance in the felt and Total storage volume given in the press can be received.
- the method according to Embodiment not only the optimal press configuration selection serves, but via a concrete roller / felt analysis an optimal one even within the press configuration Determination of the pairing in the sense of a corresponding material combination allows.
- simulation steps i.e. Observation of possibly made or to be made or occurring changes can be expected Results determined in advance and for control and / or Monitoring tasks can be used. Occurs in the simulation for example a negative total water balance, so by changing to the menu item "Change machine or Material parameters "a targeted variation can be made, all other parameters are retained so that one consideration of the interactions as close as possible to real circumstances of the individual components of the press system is.
- an automatic ongoing change and specification of machine / roller and / or machine / felt parameters the system automatically rolls / felt pairings and / or felt fleece structures with a predetermined maximum Specify drainage capacity.
Description
Bei diesem Verfahren wird das Luftverteilungssystem eines sogenannten Yankee-Zylinders dreifach geteilt, wobei zur Steuerung des Trocknungsprozesses ein Computer verwendet wird. Die Steuerung und Überwachung des Yankee-Zylinder-Trockenprozesses erfolgt auf der Basis eines Online-Simulationsprogramms, wodurch eine bessere Papierqualität und eine effektivere Trocknung sowohl bezüglich des Energieverbrauchs als auch des eigentlichen Trocknungsprozesses erreicht werden soll. Hierfür wird ein Prozeßmodell genutzt, das aufgrund von Versuchsläufen, Online-Messungen und/oder der Trocknungstheorie aufgestellt wurde. In das Prozeßmodell werden aus einer sogenannten Sorten- oder Rezeptkartei den zu fahrenden Bahnsorten entsprechende Sollwertparameter eingegeben, wobei in bestimmten Zeitabschnitten das Simulationsprogramm mit neuen Ausgangswerten versehen wird, die von Meßgebern des Trocknungsprozesses bereitgestellt werden. Das dortige Prozeßmodell soll dadurch adaptiv sein. Das bekannte Simulationsprogramm berechnet also aus den Ausgangsdaten, z.B. Verdampfungsleistung für die zu trocknende Bahn von jedem Segment, den Trockengehalt sowie die Temperatur des Papiers und den Energieverbrauch der einzelnen Trocknungssegmente. Zusätzlich kann die Geschwindigkeit, die Feuchtigkeit und die Temperatur der Blasluft bestimmt werden.
Das Verhalten der Bespannung in der Presse hängt dabei von der definierten Walzenkonfiguration ab, welche wiederum in Wechselwirkung zum Filzmaterial steht.
Die Wechselwirkungen und Einflußparameter von Walzen/Filz-Paarungen in Naßpressen sind außerordentlich komplex, wobei sich durch Verschmutzungen des Filzes im laufenden Betrieb unerwünschte und nicht abschätzbare Qualitätsveränderungen oder unerwünschte Produktivitätseinschränkungen beim Betreiben der Papiermaschinen ergeben. Bisher bekannte Designmethoden bei der Erstellung einer optimalen Walzen/Filz-Paarung greifen auf teilweise aufwendige Probeläufe und vor Ort beim Kunden notwendige Variantenuntersuchungen zurück, die jedoch sehr zeit- und kostenintensiv sind.
Hierfür wird eine Verlagerung von Rechenschritten zur Ergebnisdarstellung, insbesondere dann, wenn veränderte Eingabeparameter vorliegen, in den Hintergrund vorgenommen, wobei jedoch das Ausführen der notwendigen Rechenoperationen nahezu simultan erfolgt, so daß für die, auch prozeßnahe, Analyse die Rückkopplung veränderter Parameter auf die Entwässerungskapazität und das Betriebsverhalten der Naßpresse jederzeit abrufbar ist.
Durch das Auslesen von Standarddatenbank-Parametern steht für den Beginn des Auslegungsprozesses eine sinnvolle Datenmenge unter Berücksichtigung tatsächlicher technischer Gegebenheiten zur Verfügung.
Durch die quasi parallel durchgeführte Filz- und Walzenanalyse, jedoch getrennte Darstellung der jeweiligen Analyseergebnisse unter Berücksichtigung der für die Wechselwirkung der Paarung notwendigen Größen ist das ansonsten kaum überschaubare Verhalten der Naßpresse leichter darstellbar. Insbesondere können für die Steuerungs- und Überwachungsaufgaben aufgrund der übersichtlichen Darstellung nach Auslösen eines Alarms beim Erreichen von Grenzbedingungen des Entwässerungsvorgangs Gegenmaßnahmen leichter erkannt werden, um schnellstmöglich die richtigen Maßnahmen zum Beseitigen einer hydraulischen Überlastung des Systems einzuleiten.
Bei dieser Ausführungsform des Verfahrens wird eingabeseitig ein Anstoßen eines Berechnungszyklus vorgegeben, wobei vom Computersystem die Auslegungsprozedur bis hin zum Erreichen von Grenzwerten oder Grenzbelastungen selbsttätig durchgeführt wird und die erhaltenen Ergebnisse angezeigt werden.
- Fig. 1
- die Abbildung des Eröffnungs- oder Hauptmenus zur Durchführung des Verfahrens mittels eines Computersystems;
- Fig. 2
- bis 8 Bildschirmdarstellungen der Walzenanalyse mit symbolischer Verknüpfung zwischen Einflußparametern und Ergebnissen sowie
- Fig. 9
- bis 16 Bildschirmdarstellungen der Filzanalyse mit symbolischer Verknüpfung zwischen Einflußparametern und Ergebnissen.
Claims (12)
- Verfahren zur Auslegung und/oder Visualisierung von mindestens einer Walzen/Filz-Paarung in der Naßpresse einer Papier- oder Kartonmaschine,
gekennzeichnet durch folgende Schritte:Auswahl einer Pressenkonfiguration aus einer mittels eines Computersystems angebotenen Menge verschiedener Pressenkonfigurationen unter Berücksichtigung des Einsatzfalles und der gewünschten Papier- oder Kartonqualität;Selektion einer der Pressen der jeweiligen Pressenkonfiguration, wobei relevante Ausgangsmaschinen- und Walzenparameter der selektierten Presse aus einer Standarddatenbank gelesen und angezeigt werden;Berechnen und Ergebnisdarstellen des momentanen Entwässerungsverhaltens der selektierten Presse, wobei hierfür auf einen im Hintergrund ablaufenden Filzparameter-Leseschritt aus der Standarddatenbank zurückgegriffen wird;Verändern von Maschinen- und/oder Walzenparametern der selektierten Presse, wobei das aufgrund der Parameteränderungen geänderte Entwässerungsverhalten der Walzen/- Filz-Paarung der Presse laufend neu berechnet und mindestens teilweise als Trendanzeige dargestellt wird, dergestalt, daß zum Ergebnisdarstellen durch simultanes Vorliegen der Rechenergebnisse beliebig zwischen Walzen- und Filzanalyse gewechselt werden kann und in jeder Ergebnisdarstellung Felder zur erneuten Veränderung und Vorgabe von Maschinen- und Walzen- oder Maschinen- und Filzparametern vorgesehen sind. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die laufende Veränderung und Vorgabe von Maschinen/Walzen-und/oder Maschinen/Filzparametern selbsttätig mit dem Ziel erfolgt, eine Walzen/Filz-Paarung und/oder einen Vliesaufbau mit vorgegebener maximaler Entwässerungskapazität anzugeben. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß bei Selektion einer weiteren Presse der jeweiligen Pressenkonfiguration aus der Standarddatenbank Systemvorschlagdaten für die weitere Presse gelesen werden, wobei wesentliche Maschinenparameter sowie die Papier- oder Kartonqualität bestimmende Stoffparameter als übergeordnete Einflußgrößen solange erhalten bleiben und übernommen werden, bis eine neue Pressenkonfiguration gewählt wird. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Standarddatenbank für alle Pressenkonfigurationen verknüpfte Voreinstelldaten enthält, welche im Analyseprozeß änderbar sind, wobei ausgehend von neuen Maschinen-, Stoff-, Walzen- und/oder Filzparametern durch Berechnung erhaltene neue Standarddaten abspeicherbar sind. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet, daß die Erstellung neuer Standarddaten durch Selbstlernschritte realisierbar ist. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß zur aktuellen Steuerung einer Papier- oder Kartonmaschine auf ein prozeßnahes Simulieren des Verhaltens der Walzen/Filz-Paarungen der Naßpresse zurückgegriffen wird, wobei die Einstellung insbesondere von aktuellen Maschinen- und Walzenparametern auf der Basis einer vorab ermittelten Maschinenbespannung vorgenommen wird. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Maschinen-, Walzen- und Filzparameter sowie die berechneten Ergebnisse auf einem Monitor des Computersystem in unterschiedlicher graphischer und/oder farblicher Form darstellbar sind. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet, daß bei der-Darstellung des Entwässerungsverhaltens der jeweiligen Presse die produktbezogenen Ergebnisse in einer ersten übereinstimmenden Form, die wasserbezogenen Ergebnisse in einer zweiten übereinstimmenden Form und veränderbare Eingabeparameter in einer dritten übereinstimmenden Form angezeigt werden. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Maschinen- und Stoffparameter mindestens folgende Größen umfassen:Maschinengeschwindigkeit,Linienlast,Papierqualität,Papiergewicht,Eingangstrockengehalt,Stofftemperatur. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Walzenparameter mindestens folgende Größen umfassen:Bezugslänge,Bezugsart,Anzahl der Nips,Plastometerpunkte als Bezugshärteangabe,Bezugsstärke,Durchmesser mit Walzenbezug,Angaben über Rillen, Stege und Blindbohrungen sowie Sauglochdurchmesser. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Filzparameter mindestens folgende Größen umfassen: Typ und Art des Grundgewebes,
gemessener Wert des absoluten Feuchtigkeitsgehalts des Filzes, Angabe über das Gesamtgewicht sowie zum Grundgewebegewicht, Angabe über die Fasermischungen sowie Anzahl der Vlieslagen je Mischung sowie des Gewichts pro Lage einer Mischung und Meßwerte des Rohrsaugervakuums beim Anlauf der Papiermaschine. - Verfahren nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Berechnungs- und Darstellungsergebnisse mindestens folgende Größen umfassen:Auslauftrockengehalt,aus der Papierbahn ausgepreßte Wassermenge,gesamter Wasseranfall,gesamtes Speichervolumen,Differenz zwischen gesamten Speichervolumen und gesamten Wasseranfall,erforderliche Kühlmittelmenge für Walzenkühlung,verändertes Grundgewebegewicht bei geändertem Filzmaterial, gesamtes Filzgewicht,Speichervolumen des neuen Grundgewebes über vorgegebene Linienlast,Speichervolumen des Grundgewebes über die Laufzeit, Wasserdurchlässigkeit des Filzes und Fließwiderstand des Filzes über die Laufzeit sowieAngaben über die Größen zur Entwässerung und Reinigung des Filzes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1997/001016 WO1998038383A1 (de) | 1997-02-28 | 1997-02-28 | Verfahren zur auslegung und/oder visualisierung von mindestens einer walzen/filz-paarung in der nasspresse einer papier- oder kartonmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0963481A1 EP0963481A1 (de) | 1999-12-15 |
EP0963481B1 true EP0963481B1 (de) | 2002-07-17 |
Family
ID=8166542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97907059A Expired - Lifetime EP0963481B1 (de) | 1997-02-28 | 1997-02-28 | Verfahren zur auslegung und/oder visualisierung von mindestens einer walzen/filz-paarung in der nasspresse einer papier- oder kartonmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6778947B1 (de) |
EP (1) | EP0963481B1 (de) |
AT (1) | ATE220746T1 (de) |
AU (1) | AU1924797A (de) |
CA (1) | CA2283864A1 (de) |
DE (1) | DE59707751D1 (de) |
WO (1) | WO1998038383A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005015506A1 (de) * | 2005-04-05 | 2006-10-12 | Man Roland Druckmaschinen Ag | Druckmaschinensimulator |
DE102009028215B3 (de) | 2009-08-04 | 2010-09-09 | Voith Patent Gmbh | Kombination eines Pressfilzes mit einem Presswalzenbezug und/oder einem Saugwalzenbezug für eine Papiermaschine |
EP3392405A1 (de) * | 2017-04-18 | 2018-10-24 | Siemens Aktiengesellschaft | Verfahren zum betrieb einer papiermaschine, antriebssystem und papiermaschine |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4427734A (en) * | 1982-04-19 | 1984-01-24 | Albany International Corp. | Wet press felt for papermaking machines |
DE3220622A1 (de) * | 1982-06-01 | 1983-12-15 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Dateneingabeeinrichtung an druckmaschinen |
DE3336658A1 (de) * | 1983-10-08 | 1985-04-25 | Ingenioerfirma Peter Simonsen A/S, 6400 Soenderborg | Einseitige wellpappenmaschine |
SE463269B (sv) * | 1984-04-11 | 1990-10-29 | Sensodec Oy | Foerfarande och anordning foer att lokalisera fel i funktionen hos en pappersmaskins maskindelar |
CA1292891C (en) * | 1986-05-20 | 1991-12-10 | Ivan I. Pikulik | Method and apparatus for measurement of the permeability to water |
AU8326287A (en) * | 1986-10-31 | 1988-05-25 | Quad/Tech, Inc. | Improved cutoff control system |
US4984773A (en) * | 1987-10-06 | 1991-01-15 | Rockwell International Corporation | Method of and apparatus for composing a press imposition |
FI81628C (fi) * | 1987-11-09 | 1990-11-12 | Valmet Paper Machinery Inc | Foerfarande vid styrningen och/eller kontrollen av en torkningsprocess som sker med en yankee-cylinder. |
FI85731C (fi) * | 1989-06-01 | 1997-08-20 | Valmet Paper Machinery Inc | Reglersystem i en pappers- eller kartongmaskin |
US5713396A (en) * | 1990-06-06 | 1998-02-03 | Asten, Inc. | Papermakers fabric with stacked machine and cross machine direction yarns |
US5135802A (en) * | 1991-12-06 | 1992-08-04 | Huyck Corporation | Absorber felt |
US6024835A (en) * | 1992-08-28 | 2000-02-15 | Fiore; Leonard F. | Quality control apparatus and method for paper mill |
JP3094798B2 (ja) * | 1994-08-16 | 2000-10-03 | 王子製紙株式会社 | 抄紙機の抄替時の製品水分の制御方法およびその装置 |
DE29512758U1 (de) * | 1995-08-08 | 1995-10-19 | Heidelberger Druckmasch Ag | Reinigungsvorrichtung zum Reinigen von Zylindern einer Druckmaschine |
FI98843C (fi) * | 1995-10-03 | 1997-08-25 | Valmet Corp | Menetelmä ja laite veden poistamiseksi paperi- tai kartonkiradasta puristamalla |
US6077397A (en) * | 1996-10-23 | 2000-06-20 | Asten, Inc. | High support papermakers fabric |
US5891306A (en) * | 1996-12-13 | 1999-04-06 | Measurex Corporation | Electromagnetic field perturbation sensor and methods for measuring water content in sheetmaking systems |
US5853543A (en) * | 1997-01-27 | 1998-12-29 | Honeywell-Measurex Corporation | Method for monitoring and controlling water content in paper stock in a paper making machine |
-
1997
- 1997-02-28 AU AU19247/97A patent/AU1924797A/en not_active Abandoned
- 1997-02-28 EP EP97907059A patent/EP0963481B1/de not_active Expired - Lifetime
- 1997-02-28 CA CA002283864A patent/CA2283864A1/en not_active Abandoned
- 1997-02-28 AT AT97907059T patent/ATE220746T1/de not_active IP Right Cessation
- 1997-02-28 DE DE59707751T patent/DE59707751D1/de not_active Expired - Fee Related
- 1997-02-28 US US09/380,238 patent/US6778947B1/en not_active Expired - Fee Related
- 1997-02-28 WO PCT/EP1997/001016 patent/WO1998038383A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
US6778947B1 (en) | 2004-08-17 |
DE59707751D1 (de) | 2002-08-22 |
AU1924797A (en) | 1998-09-18 |
CA2283864A1 (en) | 1998-09-03 |
WO1998038383A1 (de) | 1998-09-03 |
EP0963481A1 (de) | 1999-12-15 |
ATE220746T1 (de) | 2002-08-15 |
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