EP3148881A1 - Procédé de remplissage régulé par des robinets - Google Patents

Procédé de remplissage régulé par des robinets

Info

Publication number
EP3148881A1
EP3148881A1 EP15723954.2A EP15723954A EP3148881A1 EP 3148881 A1 EP3148881 A1 EP 3148881A1 EP 15723954 A EP15723954 A EP 15723954A EP 3148881 A1 EP3148881 A1 EP 3148881A1
Authority
EP
European Patent Office
Prior art keywords
filling
flow rate
valve
during
determined
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.)
Ceased
Application number
EP15723954.2A
Other languages
German (de)
English (en)
Inventor
Andreas Illi
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.)
Endress and Hauser Process Solutions AG
Original Assignee
Endress and Hauser Process Solutions AG
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 Endress and Hauser Process Solutions AG filed Critical Endress and Hauser Process Solutions AG
Publication of EP3148881A1 publication Critical patent/EP3148881A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/26—Methods or devices for controlling the quantity of the material fed or filled
    • B65B3/34—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations
    • B65B3/36—Methods or devices for controlling the quantity of the material fed or filled by timing of filling operations and arresting flow by cut-off means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/20—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus with provision for metering the liquids to be introduced, e.g. when adding syrups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/287—Flow-control devices, e.g. using valves related to flow control using predetermined or real-time calculated parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/001—Means for regulating or setting the meter for a predetermined quantity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/005—Valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/02—Compensating or correcting for variations in pressure, density or temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F5/00—Measuring a proportion of the volume flow

Definitions

  • the invention relates to a method for valve-controlled filling of a defined filling quantity of a medium in a container. Furthermore, the invention relates to a filling device and a computer program or a
  • a valve is opened in a feed line in the known filling operations at a given time.
  • the volume and the mass flow of the medium is with a volume flow meter or with a
  • the volumetric flow meter may be, for example, a PROMAG 53 or a DOSIMAG II.
  • Mass flow meter for example, a PROMASS 83 or a DOSIMASS II can be used.
  • the aforementioned device types are offered and distributed by the applicant. Based on the flow value supplied by the meter, the filling quantity is determined. Once the predetermined amount of the medium is filled in the container, the valve is closed. The flow quantity or the
  • closed valve is filled into the container is determined based on empirical values or on the basis of experimentally determined values and taken into account in the filling process.
  • a high reproducibility of the filling amount that is filled into a container is important in two respects: If the filling quantity does not correspond to the minimum quantity indicated on the container, legal penalties are imposed on the operator of the process unit; if, on the other hand, the filling quantity exceeds the quantity to be filled, the bottler may have significant financial losses.
  • a corresponding method for filling a defined amount of a medium in a container has become known from the published patent application DE 10149473. There will determines the flow rate and / or the follow-up amount of the medium and the opening and / or closing of the valve is controlled so that the defined amount of filling of the medium is poured into the container. Also in the published patent application DE 102005008041 a method for the metered filling of a flowable medium has become known. In this case, the device- and medium-specific overrun quantity is determined and this taken into account in the subsequent fillings as a correction, so that the Abglallistmenge corresponds to the filling target quantity.
  • the invention has for its object to propose an improved method for filling a defined filling quantity.
  • the invention is solved by a method, a filling device and a computer program or a computer program product.
  • the object is achieved by a method for valve-controlled filling of a defined filling quantity of a medium in a container, wherein determined during a filling operation on the basis of a flow rate (total flow) representing the measuring signal, preferably a pulse signal, a flow rate of the medium and, based on a change in the flow rate during the filling operation, a time for closing a valve which serves for filling is corrected during the filling operation, preferably as a function of the change in the flow rate.
  • a flow rate total flow representing the measuring signal, preferably a pulse signal
  • flow rate is meant, for example, the mass detected by means of a flow meter, for example in kg, or the detected volume, for example in m 3 .
  • Measuring signal can serve the above-mentioned pulse signal.
  • an impulse may correspond to a predetermined amount of, for example, 2 ml.
  • the total flow rate can then be determined in turn by detecting the number of pulses.
  • flow rate refers to a volume or mass that flows through a certain surface per unit of time, ie dM / dt or dV / dt and is usually expressed in kg / s or m 3 / s.
  • the flow rate can be determined.
  • the follow-up quantity i. the
  • Threshold is that corrects, in particular predetermined time to close the valve during the filling process.
  • a correction can thus be carried out, for example, only if a change in the flow rate exceeds a threshold value.
  • a tolerance band in the form of a first and a second threshold for example above or below a predetermined flow rate, may be provided to correct the time for closing the valve in the event of an increasing or decreasing flow rate during the filling process.
  • the time for closing the valve is corrected so that the defined amount of filling is filled into the container.
  • the time to close the valve is chosen such, for example.
  • a corresponding signal (closing command) for closing the valve is generated that the expected due to the changed flow rate
  • detected flow rate corresponding to the desired filling amount By the control unit, detected flow rate corresponding to the desired filling amount.
  • the time for closing the valve is determined based on the change or on the basis of a rate of change of the flow rate. Instead of calculating the expected run-on quantity and using this calculation to correct the time for closing the valve, the time for closing the valve can also be corrected directly based on the changed flow rate. This can, for example, by means of stored correction values, which are based, for example, on a calibration.
  • the time for closing the valve is determined by a desired value, which set value corresponds to the defined filling quantity minus a follow-up correction.
  • the desired value corresponds to a value of a measuring signal or a number of measuring signals, particularly preferably a number of pulses.
  • the detection of the measurement signals can be done, for example, in the control unit of the bottling plant. In this control unit and the setpoint can be stored, or the setpoint can be adjusted by means of the control unit to the changed flow rate.
  • the desired value is corrected during the filling process in the event of a change in the flow rate, in particular increased, if the flow rate increases and / or is reduced, if the
  • Flow rate decreases.
  • a first threshold above and / or a second threshold below a predetermined flow rate may be provided.
  • a variable flow rate which is formed, for example, from previous values, preferably during the same filling process, of the flow rate.
  • the first and / or second threshold value can then be adapted to this variable flow rate by this flow rate, in particular such that there is always a substantially constant distance between the variable flow rate and the first or second threshold value.
  • a follow-up quantity is thus determined on the basis of the change in the flow rate during the filling process, or determined from stored values, and a pertinent correction of the desired value takes place.
  • a signal for closing the valve is generated. This comparison between a setpoint and an actually received number
  • Measuring signals can be carried out by means of the aforementioned control unit.
  • the control unit can be connected to the flow meter and / or the valve, for example via a communication connection, preferably in the form of a field bus.
  • the desired value during a filling process is adapted several times, in particular continuously, to the determined flow rate.
  • a mean flow rate is determined based on which average flow rate of the setpoint is determined.
  • Flow rate determined to determine a change in flow rate During these intervals one or more measured values of the flow rate can be determined. These may be overlapping or immediately adjacent intervals. In this way, one or more mean values of the flow rate can be formed in order to determine or predict a follow-up quantity and / or based on the at least one measured value of the flow rate, the time to
  • the change in the flow rate detected during the filling process serves to determine a follow-up quantity of the flow rate
  • a filling device for carrying out the method according to one of the preceding embodiments.
  • a filling device may comprise one and / or a plurality of filling points, which serve for filling in each case one or in each case a plurality of containers.
  • a filling station may include a flow meter and a valve.
  • a computer-based control unit may be part of the bottling plant and may be provided with the one and / or the plurality of bottling sites, i. the flow meter and the associated valve, be connected via a common or separate communication lines.
  • the proposed method for all of these filling stations or only a part of the filling points can be performed.
  • the filling process at the filling points can be carried out simultaneously with one another.
  • Filling station at a time offset to perform the filling at another filling point. It is also possible to use correction values of a filling point for controlling or correcting the filling process at another, in particular subsequent, preferably directly following, filling point, preferably the same
  • Program code means which, when executed, serve to provide the
  • the computer program product may be a volatile and / or non-volatile medium.
  • the program code means can be present in a programming language, in particular a logic.
  • the computer program product may have a processor which is used to execute the program code means.
  • the computer program or the computer program product can in particular be deposited on a control unit of a bottling plant or be able to run there.
  • a filling device 1 as used in various industries, is shown.
  • the fluid medium P is provided in a reservoir 40.
  • the reservoir 40 is connected via a central supply line 50 with the individual filling points, which are designated as line 1 to line 6.
  • line 1 to line 6 For the sake of clarity, only one filling point L1 is provided with reference numbers.
  • Each of the filling stations has a flow meter 52 and a filling valve 54. Via the valve 54, the medium P is filled into the filling container 60.
  • the filling containers are guided here via a conveyor belt 70 to the individual filling points.
  • Flowmeters 52 and the filling valves 54 are connected via signal lines 16 and control signal lines SL to a control unit 10.
  • the control unit 10 is constructed in a modular manner. It consists, for example, of a power supply unit, a central processing unit, field bus communication unit, a digital pulse generator. Input unit, eg with several inputs, one digital pulse output unit, also several times, and one 4-20 mA unit, also several times.
  • the dosing control unit 10 is connected to a central controller 20.
  • the communication between the metering control unit 10 and the central controller 20 takes place, for example, according to the Profibus DP standard, wherein the metering control unit 10 acts as a slave and the controller 20 as a master.
  • the controller 20 controls the entire supply and discharge of the filling container 60 to the individual filling points. The entire filling cycle for each of the filling containers takes, for example, 5 seconds.
  • the dosing control unit 10 is further connected to a local display unit 30, which is designed, for example, as a touchscreen, via which the configuration of the filling installation takes place.
  • a local display unit 30 which is designed, for example, as a touchscreen, via which the configuration of the filling installation takes place.
  • the control unit 10 and / or 20 may also be made compact and arranged within a housing.
  • the pressure D in the storage tank 40 is kept constant.
  • a pressure gauge 46 is provided on the reservoir 40, which measures the pressure D in the container 40.
  • the pressure D can be adjusted.
  • the corresponding control of the head pressure also takes place via the metering control unit 10.
  • the current pressure D as 4-20 mA signal via the measurement signal line MSL to the
  • Dosing control unit 10 transmitted. Via the control signal line SSL, the valve 44 is driven in accordance with the dosing control unit 10, thereby keeping the pressure D in the container 40 constant.
  • pressure fluctuations can occur during filling, if, for example, not all valves of the bottling plant open, thereby increasing the flow through the opened valves.
  • Flow rate is shown in Figure 2.
  • the flow rate [ml / s] is plotted against time [s].
  • the filling process is at a time t1 by a corresponding signal on
  • valve triggered. Then the valve is opened. In this case, the valve opens after receiving this signal, but the flow rate does not increase abruptly but continuously, so that only at a time t2 an approximately constant
  • Flow rate is achieved - ie the flow is at fully open valve has leveled. This behavior after opening the valve is also known as flow.
  • the flow rate L0 of the flow rate remains ideally in a subsequent to the period after the opening of the valve time t2 is substantially constant until the defined filling amount is filled into the container or until a signal to close the valve, for example, at a time t3 to the Valve is sent. Upon receipt of this signal, the valve closes. Since this operation, as well as the opening of the valve, requires a certain amount of time, during this time period between times t3 and t4, when the valve is closed, a certain amount of medium, referred to as caster, flows through the valve and enters the container bottled.
  • the time for closing the valve with respect to a reference time may be earlier, and in the case of a decreasing flow rate, the time for shooting the valve corresponding to a reference time later, since the follow-up amount is lower.
  • the curve L1 shows a course of the flow rate very similar to that of the curve L in Fig. 2, in which the flow rate changes during the filling process.
  • the course of the average flow rate L2 shows that the flow rate decreases at a time s1 and then gradually increases again to the original value.
  • the counter value L3 is used to determine the closing time, increased, so that the valve remains open to a reference value or reference time longer. As the (medium) flow rate increases again, the counter value is lowered again until it is approximately at the initial value.
  • the course L4 of the sum of the counter over the time which corresponds to the course of the filled flow rate, is ramped.
  • the counter corresponds to the number of pulses that is output by the flowmeter. The number of pulses increases linearly during the filling process. Depending on the flow rate, different sections of the ramp with different gradients may be present.
  • a comparison between L5 of the valve opening and counter or flow rate signal shows that, after the signal has been sent, it takes a certain amount of time for the valve to fully open and the flow stabilizes to a level. This can be seen from the delayed response of the counter L4 and the flow rate L1 compared to the signal to open the valve L5.
  • the course of the measuring signal detection L6 during the filling process begins with the transmission of the signal for opening the valve and continues for a period of time after the signal for closing the valve, so that the follow-up quantity in the form of Measuring signal is detected and transmitted as a pulse to the control unit, and thus the actual filled amount of the medium is detected.
  • the detection of the flow rate for the purpose of correction only starts, as shown in the course L7, at a time point s2 after the full opening of the valve.
  • Flow rate acquisition begins when the flow has settled after opening the valve. After an average value of the flow rate has been determined, the correction of the counter value for closing the valve can also take place. The period in which a correction of the setpoint to determine the
  • Closing time of the valve is performed is represented by the curve L8.
  • the counted pulses per unit of time generate a value for volume or mass flow (units, e.g., ml / s or g / s).
  • the number of pulses determines the volume or mass (units, for example, ml or g), that is, the dosage or flow rate.
  • a counter card which may be part of the control unit, for example, counts the pulses defined in the flowmeter (e.g., 0.02ml / pulse). At the end of the dosing cycle, e.g. Counted 5000 pulses, which corresponds to 0.02 ml / pulse 100ml.
  • Setpoint value is defined in a program that runs, for example, in the control unit, the desired dosage amount (for example, 100 ml, which corresponds to 5000 pulses in the example mentioned).
  • the desired dosage amount for example, 100 ml, which corresponds to 5000 pulses in the example mentioned.
  • the valve closes. However, since from the time of the closing command to the time when the valve is fully closed, still more medium is filled into the container, so at the end of the dosing cycle, for example. 5200 pulses instead of the desired 5000 counted.
  • the calculated new setpoint is only used within the program mentioned above. An ad presented to a user will still show 100ml. The actual value (counter reading) is set to zero before each start of a new filling process. Since the closing behavior of the valve generally does not change significantly from dosing cycle to dosing cycle, exactly 100ml should be dosed at the next dosing cycle, even though the valve got the closing command at 96ml. The closing behavior of the valve is only the same from filling process to filling process if the volume or mass flow does not change (eg due to higher pressure in the pump)
  • volume or mass flow must dynamically monitor during a filling operation to dynamically change the setpoint during the filling process.
  • the actual value is subtracted from the setpoint value after the filling process and thus defines the new setpoint value for the next filling process.
  • the volume or mass flow is now dynamically detected during the filling process and the setpoint is dynamically corrected by a factor calculated by the change in the volume or mass flow.
  • the volume or mass flow value used for this factor can be determined as follows: By the o.g. Program that runs on the control unit, for example, is determined when the valve is fully open and the volume or mass flow has settled to a preliminary final value (for example, 100 ms after the start command). Then another 100ms is waited to not detect any start-up fluctuations. And then, for example, every 10ms volume or mass flow values are recorded and the average of these measured values is formed until the closing command of the valve comes. This volume or mass flow average will be the next
  • Bottling process used as an initial reference. So the setpoint for the next bottling process will be at that old average relative to the new one
  • volume or mass flow average value and thus dynamically changed during the current filling process, the setpoint.
  • Average value can be included by means of one or more
  • Thresholds define a hysteresis. By means of the hysteresis, it can be determined which deviation in the volume or mass flow just recorded is still tolerated for the average value as compared to the previously detected volume flow or mass flow.
  • the individual volume or mass flow values are recorded, for example, every 10 ms. So if within this interval the volume or mass flow values are above or below Under the limits of the hysteresis changed, this volume or mass flow value is not used for the average, It can also be defined an interval to increase the period of 10ms. Then the average of the volume or mass flow values is formed within an interval and these interval averages are then used to check the limits of hysteresis. Then, the volume or mass flow interval averages are also used to generate the volume or mass flow overall average.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Basic Packing Technique (AREA)

Abstract

L'invention concerne un procédé de remplissage régulé par des robinets, permettant de remplir un contenant (60) avec une quantité définie d'un produit (P). Pendant un processus de remplissage, un débit (L1) du produit (P) est déterminé au moyen d'un signal de mesure (L4), de préférence un signal d'impulsion, représentant une quantité d'écoulement et, sur la base d'une variation (L2) du débit (L1) pendant le processus de remplissage, un instant (t3) pour fermer un robinet (54) servant au remplissage est corrigé pendant le processus de remplissage.
EP15723954.2A 2014-05-26 2015-05-20 Procédé de remplissage régulé par des robinets Ceased EP3148881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014107364.9A DE102014107364A1 (de) 2014-05-26 2014-05-26 Verfahren zum ventilgesteuerten Abfüllen
PCT/EP2015/061140 WO2015181024A1 (fr) 2014-05-26 2015-05-20 Procédé de remplissage régulé par des robinets

Publications (1)

Publication Number Publication Date
EP3148881A1 true EP3148881A1 (fr) 2017-04-05

Family

ID=53199998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15723954.2A Ceased EP3148881A1 (fr) 2014-05-26 2015-05-20 Procédé de remplissage régulé par des robinets

Country Status (4)

Country Link
US (1) US20170144784A1 (fr)
EP (1) EP3148881A1 (fr)
DE (1) DE102014107364A1 (fr)
WO (1) WO2015181024A1 (fr)

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EP3003877B1 (fr) * 2013-06-04 2017-04-12 Tetra Laval Holdings & Finance SA Dispositif et procédé pour une machine de remplissage
WO2017174367A1 (fr) 2016-04-06 2017-10-12 Robert Bosch Gmbh Dispositif pour transvaser un produit
US10662050B2 (en) 2018-04-10 2020-05-26 General Mills, Inc. Apparatus and method for filling a container
DE102020129217A1 (de) * 2020-11-05 2022-05-05 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Befüllen von Behältern mit einem Füllprodukt
DE102020130738A1 (de) * 2020-11-20 2022-05-25 Krones Aktiengesellschaft Verfahren zum Kalibrieren eines Füllorgans in einer Abfüllanlage
EP4009009B1 (fr) 2020-12-07 2022-09-14 Sick Ag Commande d'un procédé d'embouteillage
DE102021124777A1 (de) * 2021-09-24 2023-03-30 Krohne Messtechnik Gmbh Verfahren zum Betreiben einer Abfüllanlage und Abfüllanlage
DE102021134033B3 (de) * 2021-12-21 2023-05-17 Krohne Messtechnik Gmbh Verfahren zum Betreiben einer Abfüllanlage und Abfüllanlage

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Also Published As

Publication number Publication date
WO2015181024A1 (fr) 2015-12-03
DE102014107364A1 (de) 2015-11-26
US20170144784A1 (en) 2017-05-25

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